Mercurial > hg > freeDiameter
annotate include/freeDiameter/libfdproto.h @ 850:12e7fcbc1b21
Fix previous commit
| author | Sebastien Decugis <sdecugis@freediameter.net> |
|---|---|
| date | Sun, 21 Oct 2012 17:15:22 +0200 |
| parents | d7f940afd933 |
| children | 254d81d21d0b |
| rev | line source |
|---|---|
| 0 | 1 /********************************************************************************************************* |
| 2 * Software License Agreement (BSD License) * | |
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3 * Author: Sebastien Decugis <sdecugis@freediameter.net> * |
| 0 | 4 * * |
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5 * Copyright (c) 2012, WIDE Project and NICT * |
| 0 | 6 * All rights reserved. * |
| 7 * * | |
| 8 * Redistribution and use of this software in source and binary forms, with or without modification, are * | |
| 9 * permitted provided that the following conditions are met: * | |
| 10 * * | |
| 11 * * Redistributions of source code must retain the above * | |
| 12 * copyright notice, this list of conditions and the * | |
| 13 * following disclaimer. * | |
| 14 * * | |
| 15 * * Redistributions in binary form must reproduce the above * | |
| 16 * copyright notice, this list of conditions and the * | |
| 17 * following disclaimer in the documentation and/or other * | |
| 18 * materials provided with the distribution. * | |
| 19 * * | |
| 20 * * Neither the name of the WIDE Project or NICT nor the * | |
| 21 * names of its contributors may be used to endorse or * | |
| 22 * promote products derived from this software without * | |
| 23 * specific prior written permission of WIDE Project and * | |
| 24 * NICT. * | |
| 25 * * | |
| 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * | |
| 27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * | |
| 28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * | |
| 29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * | |
| 30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * | |
| 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * | |
|
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY S_OUT OF THE USE OF THIS SOFTWARE, EVEN IF * |
| 0 | 33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * |
| 34 *********************************************************************************************************/ | |
| 35 | |
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36 /* This file contains the definitions of functions and types used by the libfreeDiameter library. |
| 0 | 37 * |
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38 * This library is meant to be used by both the freeDiameter daemon and its extensions. |
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39 * It provides the tools to manipulate Diameter messages and related data. |
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40 * This file should always be included as #include <freeDiameter/libfreeDiameter.h> |
| 0 | 41 * |
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42 * If any change is made to this file, you must increment the FD_PROJECT_VERSION_API version. |
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43 * |
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44 * The file contains the following parts: |
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45 * DEBUG |
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46 * MACROS |
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47 * OCTET STRINGS |
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48 * THREADS |
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49 * LISTS |
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50 * DICTIONARY |
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51 * SESSIONS |
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52 * MESSAGES |
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53 * DISPATCH |
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54 * QUEUES |
| 0 | 55 */ |
| 56 | |
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57 #ifndef _LIBFDPROTO_H |
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58 #define _LIBFDPROTO_H |
| 0 | 59 |
| 60 #ifndef FD_IS_CONFIG | |
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61 #error "You must include 'freeDiameter-host.h' before this file." |
| 0 | 62 #endif /* FD_IS_CONFIG */ |
| 63 | |
| 64 #include <pthread.h> | |
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65 #include <sched.h> |
| 0 | 66 #include <string.h> |
| 67 #include <assert.h> | |
| 68 #include <errno.h> | |
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69 #include <netinet/in.h> |
| 0 | 70 #include <arpa/inet.h> |
| 71 #include <sys/socket.h> | |
| 72 #include <netdb.h> | |
| 73 #include <stdio.h> | |
| 74 #include <stdlib.h> | |
| 75 #include <unistd.h> | |
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76 #include <stdarg.h> |
| 0 | 77 |
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78 #ifdef DEBUG |
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79 #include <libgen.h> /* for basename if --dbg_file is specified */ |
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80 #endif /* DEBUG */ |
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81 |
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82 /*============================================================*/ |
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83 /* INIT */ |
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84 /*============================================================*/ |
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85 |
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86 /* This function must be called first, before any call to another library function */ |
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87 int fd_libproto_init(void); /* note if you are using libfdcore, it handles this already */ |
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88 |
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89 /* Call this one when the application terminates, to destroy internal threads */ |
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90 void fd_libproto_fini(void); |
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91 |
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92 |
| 0 | 93 /*============================================================*/ |
| 94 /* DEBUG */ | |
| 95 /*============================================================*/ | |
| 96 | |
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97 |
| 0 | 98 /* |
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99 * FUNCTION: fd_log_debug_fstr |
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100 * MACRO: fd_log_debug |
| 0 | 101 * |
| 102 * PARAMETERS: | |
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103 * fstr : Stream where the text will be sent (default: stdout) |
| 0 | 104 * format : Same format string as in the printf function |
| 105 * ... : Same list as printf | |
| 106 * | |
| 107 * DESCRIPTION: | |
| 108 * Log internal information for use of developpers only. | |
| 109 * The format and arguments may contain UTF-8 encoded data. The | |
| 110 * output medium (file or console) is expected to support this encoding. | |
| 111 * | |
| 112 * RETURN VALUE: | |
| 113 * None. | |
| 114 */ | |
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115 void fd_log_debug_fstr ( FILE * fstr, const char * format, ... ); |
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116 #define fd_log_debug(format,args...) fd_log_debug_fstr(NULL, format, ## args) |
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117 |
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118 /* these are internal objects of the debug facility, |
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119 might be useful to control the behavior from outside */ |
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121 extern char * fd_debug_one_function; |
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122 extern char * fd_debug_one_file; |
| 0 | 123 |
| 124 /* | |
| 125 * FUNCTION: fd_log_threadname | |
| 126 * | |
| 127 * PARAMETERS: | |
| 128 * name : \0-terminated string containing a name to identify the current thread. | |
| 129 * | |
| 130 * DESCRIPTION: | |
| 131 * Name the current thread, useful for debugging multi-threaded problems. | |
| 132 * | |
| 133 * This function assumes that a global thread-specific key called "fd_log_thname" exists | |
| 134 * in the address space of the current process. | |
| 135 * | |
| 136 * RETURN VALUE: | |
| 137 * None. | |
| 138 */ | |
| 139 void fd_log_threadname ( char * name ); | |
| 140 extern pthread_key_t fd_log_thname; | |
| 141 | |
| 142 /* | |
| 143 * FUNCTION: fd_log_time | |
| 144 * | |
| 145 * PARAMETERS: | |
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146 * ts : The timestamp to log, or NULL for "now" |
| 0 | 147 * buf : An array where the time must be stored |
| 148 * len : size of the buffer | |
| 149 * | |
| 150 * DESCRIPTION: | |
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151 * Writes the timestamp (in human readable format) in a buffer. |
| 0 | 152 * |
| 153 * RETURN VALUE: | |
| 154 * pointer to buf. | |
| 155 */ | |
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156 char * fd_log_time ( struct timespec * ts, char * buf, size_t len ); |
| 0 | 157 |
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158 /* |
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159 * FUNCTION: fd_log_handler_register |
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160 * MACRO: |
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161 * |
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162 * PARAMETERS: |
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163 * fstr : Stream where the text will be sent to (default: stdout) |
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164 * format : Same format string as in the printf function |
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165 * va_list : Argument list |
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166 * |
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167 * DESCRIPTION: |
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168 * Register an external method for logging purposes. |
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169 * |
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170 * RETURN VALUE: |
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171 * int : Success or failure |
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172 */ |
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173 int fd_log_handler_register ( void (*logger)(const char * format, va_list *args) ); |
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174 |
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175 /* |
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176 * FUNCTION: fd_log_handler_unregister |
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177 * MACRO: |
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178 * |
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179 * PARAMETERS: |
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180 * |
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181 * DESCRIPTION: |
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182 * Unregister the external logging function. |
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183 * |
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184 * RETURN VALUE: |
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185 * int : Success or failure |
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186 */ |
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187 int fd_log_handler_unregister ( void ); |
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188 |
| 0 | 189 |
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190 /*============================================================*/ |
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191 /* DEBUG MACROS */ |
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192 /*============================================================*/ |
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193 |
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194 #ifndef ASSERT |
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195 #define ASSERT(x) assert(x) |
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196 #endif /* ASSERT */ |
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197 |
| 0 | 198 /* levels definitions */ |
| 199 #define NONE 0 /* Display no debug message */ | |
| 200 #define INFO 1 /* Display errors only */ | |
| 201 #define FULL 2 /* Display additional information to follow code execution */ | |
| 202 #define ANNOYING 4 /* Very verbose, for example in loops */ | |
| 203 #define FCTS 6 /* Display entry parameters of most functions */ | |
| 204 #define CALL 9 /* Display calls to most functions (with CHECK macros) */ | |
| 205 | |
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206 /* Increment the debug level for a file at compilation time by defining -DTRACE_LEVEL=FULL for example. */ |
| 0 | 207 #ifndef TRACE_LEVEL |
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208 #define TRACE_LEVEL NONE |
| 0 | 209 #endif /* TRACE_LEVEL */ |
| 210 | |
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211 /* The level of the file being compiled. */ |
| 0 | 212 static int local_debug_level = TRACE_LEVEL; |
| 213 | |
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214 /* A global level, changed by configuration or cmd line for example. Default is INFO (in libfdproto/log.c). */ |
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215 extern int fd_g_debug_lvl; |
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216 |
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217 /* Some portability code to get nice function name in __PRETTY_FUNCTION__ */ |
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218 #if (!defined( __func__)) && (__STDC_VERSION__ < 199901L) |
| 0 | 219 # if __GNUC__ >= 2 |
| 220 # define __func__ __FUNCTION__ | |
| 221 # else /* __GNUC__ >= 2 */ | |
| 222 # define __func__ "<unknown>" | |
| 223 # endif /* __GNUC__ >= 2 */ | |
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224 #endif /*(!defined( __func__)) && (__STDC_VERSION__ < 199901L) */ |
| 0 | 225 #ifndef __PRETTY_FUNCTION__ |
| 226 #define __PRETTY_FUNCTION__ __func__ | |
| 227 #endif /* __PRETTY_FUNCTION__ */ | |
| 228 | |
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229 /* A version of __FILE__ without the full path */ |
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230 static char * file_bname = NULL; |
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231 #define __STRIPPED_FILE__ (file_bname ?: (file_bname = basename((char *)__FILE__))) |
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232 |
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233 |
| 0 | 234 /* Boolean for tracing at a certain level */ |
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235 #ifdef DEBUG |
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236 #define TRACE_BOOL(_level_) ( ((_level_) <= local_debug_level + fd_g_debug_lvl) \ |
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237 || (fd_debug_one_function && !strcmp(fd_debug_one_function, __PRETTY_FUNCTION__)) \ |
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238 || (fd_debug_one_file && !strcmp(fd_debug_one_file, __STRIPPED_FILE__) ) ) |
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239 #else /* DEBUG */ |
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240 #define TRACE_BOOL(_level_) ((_level_) <= local_debug_level + fd_g_debug_lvl) |
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241 #endif /* DEBUG */ |
| 0 | 242 |
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243 |
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244 /************* |
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245 The general debug macro, each call results in two lines of debug messages (change the macro for more compact output) |
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246 *************/ |
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247 #ifdef DEBUG |
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248 /* In DEBUG mode, we add (a lot of) meta-information along each trace. This makes multi-threading problems easier to debug. */ |
| 0 | 249 #define TRACE_DEBUG(level,format,args... ) { \ |
| 250 if ( TRACE_BOOL(level) ) { \ | |
| 251 char __buf[25]; \ | |
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252 const char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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253 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
| 0 | 254 "\t%s|%*s" format "\n", \ |
| 206 | 255 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
| 0 | 256 (level < FULL)?"@":" ",level, "", ## args); \ |
| 257 } \ | |
| 258 } | |
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259 #else /* DEBUG */ |
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260 /* Do not print thread, function, ... only the message itself in this case, unless the debug level is set > FULL. */ |
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261 #define TRACE_DEBUG(level,format,args... ) { \ |
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262 if ( TRACE_BOOL(level) ) { \ |
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263 if (fd_g_debug_lvl > FULL) { \ |
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264 char __buf[25]; \ |
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265 const char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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266 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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267 "\t%s|%*s" format "\n", \ |
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268 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
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269 (level < FULL)?"@":" ",level, "", ## args); \ |
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270 } else { \ |
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271 fd_log_debug(format "\n", ## args); \ |
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272 } \ |
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273 } \ |
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274 } |
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275 #endif /* DEBUG */ |
| 0 | 276 |
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277 /************* |
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278 Derivatives from this macro |
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279 ************/ |
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280 /* Helper for function entry -- for very detailed trace of the execution */ |
| 0 | 281 #define TRACE_ENTRY(_format,_args... ) \ |
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282 TRACE_DEBUG(FCTS, "[enter] %s(" _format ") {" #_args "}", __PRETTY_FUNCTION__, ##_args ); |
| 0 | 283 |
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284 /* Helper for debugging by adding traces -- for debuging a specific location of the code */ |
| 0 | 285 #define TRACE_HERE() \ |
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183
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286 TRACE_DEBUG(NONE, " -- debug checkpoint %d -- ", fd_breakhere()); |
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287 int fd_breakhere(void); |
| 0 | 288 |
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289 /* Helper for tracing the CHECK_* macros bellow -- very very verbose code execution! */ |
| 0 | 290 #define TRACE_DEBUG_ALL( str ) \ |
| 291 TRACE_DEBUG(CALL, str ); | |
| 292 | |
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293 /* For development only, to keep track of TODO locations in the code */ |
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294 #ifndef ERRORS_ON_TODO |
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295 #define TODO( _msg, _args... ) \ |
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296 TRACE_DEBUG(NONE, "TODO: " _msg , ##_args); |
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297 #else /* ERRORS_ON_TODO */ |
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298 #define TODO( _msg, _args... ) \ |
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299 "TODO" = _msg ## _args; /* just a stupid compilation error to spot the todo */ |
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300 #endif /* ERRORS_ON_TODO */ |
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301 |
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302 /* Trace a binary buffer content */ |
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303 #define TRACE_DEBUG_BUFFER(level, prefix, buf, bufsz, suffix ) { \ |
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304 if ( TRACE_BOOL(level) ) { \ |
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305 char __ts[25]; \ |
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306 int __i; \ |
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307 size_t __sz = (size_t)(bufsz); \ |
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308 uint8_t * __buf = (uint8_t *)(buf); \ |
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309 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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310 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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311 "\t%s|%*s" prefix , \ |
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312 __thn, fd_log_time(NULL, __ts, sizeof(__ts)), __PRETTY_FUNCTION__, __FILE__, __LINE__, \ |
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313 (level < FULL)?"@":" ",level, ""); \ |
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314 for (__i = 0; __i < __sz; __i++) { \ |
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315 fd_log_debug("%02.2hhx", __buf[__i]); \ |
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316 } \ |
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317 fd_log_debug(suffix "\n"); \ |
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318 } \ |
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319 } |
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320 |
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321 /* Some aliases to socket addresses structures */ |
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322 #define sSS struct sockaddr_storage |
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323 #define sSA struct sockaddr |
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324 #define sSA4 struct sockaddr_in |
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325 #define sSA6 struct sockaddr_in6 |
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326 |
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327 /* The sockaddr length of a sSS structure */ |
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328 #define sSAlen( _sa_ ) \ |
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329 ( (socklen_t) ( (((sSA *)_sa_)->sa_family == AF_INET) ? (sizeof(sSA4)) : \ |
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330 ((((sSA *)_sa_)->sa_family == AF_INET6) ? (sizeof(sSA6)) : \ |
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331 0 ) ) ) |
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332 |
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333 /* Dump one sockaddr Node information */ |
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334 #define sSA_DUMP_NODE( sa, flag ) { \ |
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335 sSA * __sa = (sSA *)(sa); \ |
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336 char __addrbuf[INET6_ADDRSTRLEN]; \ |
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337 if (__sa) { \ |
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338 int __rc = getnameinfo(__sa, \ |
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339 sSAlen(__sa), \ |
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340 __addrbuf, \ |
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341 sizeof(__addrbuf), \ |
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342 NULL, \ |
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343 0, \ |
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344 flag); \ |
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345 if (__rc) \ |
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346 fd_log_debug("%s", (char *)gai_strerror(__rc)); \ |
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347 else \ |
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348 fd_log_debug("%s", &__addrbuf[0]); \ |
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349 } else { \ |
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350 fd_log_debug("(NULL / ANY)"); \ |
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351 } \ |
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352 } |
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353 /* Same but with the port (service) also */ |
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354 #define sSA_DUMP_NODE_SERV( sa, flag ) { \ |
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355 sSA * __sa = (sSA *)(sa); \ |
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356 char __addrbuf[INET6_ADDRSTRLEN]; \ |
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357 char __servbuf[32]; \ |
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358 if (__sa) { \ |
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359 int __rc = getnameinfo(__sa, \ |
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360 sSAlen(__sa), \ |
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361 __addrbuf, \ |
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362 sizeof(__addrbuf), \ |
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363 __servbuf, \ |
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364 sizeof(__servbuf), \ |
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365 flag); \ |
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366 if (__rc) \ |
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367 fd_log_debug("%s", (char *)gai_strerror(__rc)); \ |
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368 else \ |
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369 fd_log_debug("[%s]:%s", &__addrbuf[0],&__servbuf[0]); \ |
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370 } else { \ |
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371 fd_log_debug("(NULL / ANY)"); \ |
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372 } \ |
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373 } |
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374 |
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375 /* Inside a debug trace */ |
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376 #define TRACE_DEBUG_sSA(level, prefix, sa, flags, suffix ) { \ |
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377 if ( TRACE_BOOL(level) ) { \ |
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378 char __buf[25]; \ |
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379 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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380 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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381 "\t%s|%*s" prefix , \ |
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382 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
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383 (level < FULL)?"@":" ",level, ""); \ |
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384 sSA_DUMP_NODE_SERV( sa, flags ); \ |
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385 fd_log_debug(suffix "\n"); \ |
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386 } \ |
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387 } |
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388 |
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389 /* Report an error */ |
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390 #define TRACE_DEBUG_ERROR(format,args... ) \ |
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391 TRACE_DEBUG(INFO, format, ##args) |
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392 |
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393 /****************** |
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394 Optimized code: remove all debugging code |
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395 **/ |
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396 #ifdef STRIP_DEBUG_CODE |
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397 #undef TRACE_DEBUG |
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398 #undef TRACE_BOOL |
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399 #undef TRACE_DEBUG_sSA |
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400 #undef TRACE_DEBUG_BUFFER |
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401 #undef TRACE_DEBUG_ERROR |
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402 #define TRACE_DEBUG(level,format,args... ) |
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403 #define TRACE_BOOL(_level_) (0) |
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404 #define TRACE_DEBUG_BUFFER(level, prefix, buf, bufsz, suffix ) |
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405 #define TRACE_DEBUG_sSA(level, prefix, sa, flags, suffix ) |
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406 #define TRACE_DEBUG_ERROR(format,args... ) { \ |
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407 fd_log_debug(format "\n", ## args); \ |
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408 } |
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409 #endif /* STRIP_DEBUG_CODE */ |
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410 |
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411 |
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412 /*============================================================*/ |
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413 /* ERROR CHECKING MACRO */ |
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414 /*============================================================*/ |
| 0 | 415 |
| 416 /* Macros to check a return value and branch out in case of error. | |
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417 * These macro should be used only when errors are improbable, not for expected errors. |
| 0 | 418 */ |
| 419 | |
| 420 /* Check the return value of a system function and execute fallback in case of error */ | |
| 421 #define CHECK_SYS_DO( __call__, __fallback__ ) { \ | |
| 422 int __ret__; \ | |
| 423 TRACE_DEBUG_ALL( "Check SYS: " #__call__ ); \ | |
| 424 __ret__ = (__call__); \ | |
| 425 if (__ret__ < 0) { \ | |
| 426 int __err__ = errno; /* We may handle EINTR here */ \ | |
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427 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "' :\t%s", strerror(__err__));\ |
| 0 | 428 __fallback__; \ |
| 429 } \ | |
| 430 } | |
| 431 /* Check the return value of a system function, return error code on error */ | |
| 432 #define CHECK_SYS( __call__ ) { \ | |
| 433 int __ret__; \ | |
| 434 TRACE_DEBUG_ALL( "Check SYS: " #__call__ ); \ | |
| 435 __ret__ = (__call__); \ | |
| 436 if (__ret__ < 0) { \ | |
| 437 int __err__ = errno; /* We may handle EINTR here */ \ | |
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438 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "' :\t%s", strerror(__err__));\ |
| 0 | 439 return __err__; \ |
| 440 } \ | |
| 441 } | |
| 442 | |
| 443 /* Check the return value of a POSIX function and execute fallback in case of error or special value */ | |
| 444 #define CHECK_POSIX_DO2( __call__, __speval__, __fallback1__, __fallback2__ ) { \ | |
| 445 int __ret__; \ | |
| 446 TRACE_DEBUG_ALL( "Check POSIX: " #__call__ ); \ | |
| 447 __ret__ = (__call__); \ | |
| 448 if (__ret__ != 0) { \ | |
| 449 if (__ret__ == (__speval__)) { \ | |
| 450 __fallback1__; \ | |
| 451 } else { \ | |
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452 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__ret__)); \ |
| 0 | 453 __fallback2__; \ |
| 454 } \ | |
| 455 } \ | |
| 456 } | |
| 457 | |
| 458 /* Check the return value of a POSIX function and execute fallback in case of error */ | |
| 459 #define CHECK_POSIX_DO( __call__, __fallback__ ) \ | |
| 460 CHECK_POSIX_DO2( (__call__), 0, , __fallback__ ); | |
| 461 | |
| 462 /* Check the return value of a POSIX function and return it if error */ | |
| 463 #define CHECK_POSIX( __call__ ) { \ | |
| 464 int __v__; \ | |
| 465 CHECK_POSIX_DO( __v__ = (__call__), return __v__ ); \ | |
| 466 } | |
| 467 | |
| 468 /* Check that a memory allocator did not return NULL, otherwise log an error and execute fallback */ | |
| 469 #define CHECK_MALLOC_DO( __call__, __fallback__ ) { \ | |
| 470 void * __ret__; \ | |
| 471 TRACE_DEBUG_ALL( "Check MALLOC: " #__call__ ); \ | |
| 472 __ret__ = (void *)( __call__ ); \ | |
| 473 if (__ret__ == NULL) { \ | |
| 474 int __err__ = errno; \ | |
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475 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__err__)); \ |
| 0 | 476 __fallback__; \ |
| 477 } \ | |
| 478 } | |
| 479 | |
| 480 /* Check that a memory allocator did not return NULL, otherwise return ENOMEM */ | |
| 481 #define CHECK_MALLOC( __call__ ) \ | |
| 482 CHECK_MALLOC_DO( __call__, return ENOMEM ); | |
| 483 | |
| 484 | |
| 485 /* Check parameters at function entry, execute fallback on error */ | |
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486 #define CHECK_PARAMS_DO( __bool__, __fallback__ ) \ |
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487 TRACE_DEBUG_ALL( "Check PARAMS: " #__bool__ ); \ |
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488 if ( ! (__bool__) ) { \ |
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489 TRACE_DEBUG_ERROR("Warning: Invalid parameter received in '" #__bool__ "'"); \ |
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490 __fallback__; \ |
| 0 | 491 } |
| 492 /* Check parameters at function entry, return EINVAL if the boolean is false (similar to assert) */ | |
| 493 #define CHECK_PARAMS( __bool__ ) \ | |
| 494 CHECK_PARAMS_DO( __bool__, return EINVAL ); | |
| 495 | |
| 496 /* Check the return value of an internal function, log and propagate */ | |
| 497 #define CHECK_FCT_DO( __call__, __fallback__ ) { \ | |
| 498 int __ret__; \ | |
| 499 TRACE_DEBUG_ALL( "Check FCT: " #__call__ ); \ | |
| 500 __ret__ = (__call__); \ | |
| 501 if (__ret__ != 0) { \ | |
|
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502 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__ret__)); \ |
| 0 | 503 __fallback__; \ |
| 504 } \ | |
| 505 } | |
| 506 /* Check the return value of a function call, return any error code */ | |
| 507 #define CHECK_FCT( __call__ ) { \ | |
| 508 int __v__; \ | |
| 509 CHECK_FCT_DO( __v__ = (__call__), return __v__ ); \ | |
| 510 } | |
| 511 | |
|
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512 |
|
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513 |
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514 /*============================================================*/ |
|
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515 /* OTHER MACROS */ |
|
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516 /*============================================================*/ |
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517 |
|
618
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518 |
|
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519 /* helper macros (pre-processor hacks to allow macro arguments) */ |
|
653
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520 #define __tostr( arg ) #arg |
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521 #define _stringize( arg ) __tostr( arg ) |
|
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522 #define __agr( arg1, arg2 ) arg1 ## arg2 |
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523 #define _aggregate( arg1, arg2 ) __agr( arg1, arg2 ) |
| 0 | 524 |
| 525 | |
|
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526 /* A l4 protocol name (TCP / SCTP) */ |
|
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527 #ifdef DISABLE_SCTP |
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528 #define IPPROTO_NAME( _proto ) \ |
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529 (((_proto) == IPPROTO_TCP) ? "TCP" : \ |
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530 "Unknown") |
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531 #else /* DISABLE_SCTP */ |
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532 #define IPPROTO_NAME( _proto ) \ |
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533 ( ((_proto) == IPPROTO_TCP) ? "TCP" : \ |
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534 (((_proto) == IPPROTO_SCTP) ? "SCTP" : \ |
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535 "Unknown")) |
|
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536 #endif /* DISABLE_SCTP */ |
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537 |
| 0 | 538 /* Define the value of IP loopback address */ |
| 539 #ifndef INADDR_LOOPBACK | |
| 540 #define INADDR_LOOPBACK inet_addr("127.0.0.1") | |
| 541 #endif /* INADDR_LOOPBACK */ | |
| 542 | |
|
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543 #ifndef INADDR_BROADCAST |
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544 #define INADDR_BROADCAST ((in_addr_t) 0xffffffff) |
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545 #endif /* INADDR_BROADCAST */ |
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546 |
|
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547 /* An IP equivalent to IN6_IS_ADDR_LOOPBACK */ |
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548 #ifndef IN_IS_ADDR_LOOPBACK |
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549 #define IN_IS_ADDR_LOOPBACK(a) \ |
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550 ((((long int) (a)->s_addr) & ntohl(0xff000000)) == ntohl(0x7f000000)) |
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551 #endif /* IN_IS_ADDR_LOOPBACK */ |
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552 |
|
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553 /* An IP equivalent to IN6_IS_ADDR_UNSPECIFIED */ |
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554 #ifndef IN_IS_ADDR_UNSPECIFIED |
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555 #define IN_IS_ADDR_UNSPECIFIED(a) \ |
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556 (((long int) (a)->s_addr) == 0x00000000) |
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557 #endif /* IN_IS_ADDR_UNSPECIFIED */ |
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558 |
| 0 | 559 /* create a V4MAPPED address */ |
| 560 #define IN6_ADDR_V4MAP( a6, a4 ) { \ | |
| 561 ((uint32_t *)(a6))[0] = 0; \ | |
| 562 ((uint32_t *)(a6))[1] = 0; \ | |
| 563 ((uint32_t *)(a6))[2] = htonl(0xffff); \ | |
| 564 ((uint32_t *)(a6))[3] = (uint32_t)(a4); \ | |
| 565 } | |
| 566 | |
| 567 /* Retrieve a v4 value from V4MAPPED address ( takes a s6_addr as param) */ | |
| 568 #define IN6_ADDR_V4UNMAP( a6 ) \ | |
| 569 (((in_addr_t *)(a6))[3]) | |
| 570 | |
| 571 | |
| 572 /* We provide macros to convert 64 bit values to and from network byte-order, on systems where it is not already provided. */ | |
|
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573 #ifndef HAVE_NTOHLL /* Defined by the cmake step, if the ntohll symbol is defined on the system */ |
| 0 | 574 # if HOST_BIG_ENDIAN |
| 575 /* In big-endian systems, we don't have to change the values, since the order is the same as network */ | |
| 576 # define ntohll(x) (x) | |
| 577 # define htonll(x) (x) | |
| 578 # else /* HOST_BIG_ENDIAN */ | |
| 579 /* For these systems, we must reverse the bytes. Use ntohl and htonl on sub-32 blocs, and inverse these blocs. */ | |
| 580 # define ntohll(x) (typeof (x))( (((uint64_t)ntohl( (uint32_t)(x))) << 32 ) | ((uint64_t) ntohl( ((uint64_t)(x)) >> 32 ))) | |
| 581 # define htonll(x) (typeof (x))( (((uint64_t)htonl( (uint32_t)(x))) << 32 ) | ((uint64_t) htonl( ((uint64_t)(x)) >> 32 ))) | |
| 582 # endif /* HOST_BIG_ENDIAN */ | |
| 583 #endif /* HAVE_NTOHLL */ | |
| 584 | |
|
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585 /* This macro will give the next multiple of 4 for an integer (used for padding sizes of AVP). */ |
| 0 | 586 #define PAD4(_x) ((_x) + ( (4 - (_x)) & 3 ) ) |
| 587 | |
|
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588 /* Useful to display any value as (safe) ASCII (will garbage UTF-8 output...) */ |
| 0 | 589 #define ASCII(_c) ( ((_c < 32) || (_c > 127)) ? ( _c ? '?' : ' ' ) : _c ) |
| 590 | |
| 591 /* Compare timespec structures */ | |
| 592 #define TS_IS_INFERIOR( ts1, ts2 ) \ | |
| 593 ( ((ts1)->tv_sec < (ts2)->tv_sec ) \ | |
|
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594 || (((ts1)->tv_sec == (ts2)->tv_sec ) && ((ts1)->tv_nsec < (ts2)->tv_nsec) )) |
| 0 | 595 |
|
542
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596 /* This gives a good size for buffered reads */ |
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597 #ifndef BUFSIZ |
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598 #define BUFSIZ 96 |
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599 #endif /* BUFSIZ */ |
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600 |
|
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601 /* This gives the length of a const string */ |
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602 #define CONSTSTRLEN( str ) (sizeof(str) - 1) |
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603 |
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604 |
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605 /*============================================================*/ |
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606 /* PORTABILITY */ |
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607 /*============================================================*/ |
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608 #ifndef HAVE_CLOCK_GETTIME |
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609 #define CLOCK_REALTIME 0 |
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610 #include <sys/time.h> |
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611 int clock_gettime(int clk_id, struct timespec* ts); |
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612 #endif /* HAVE_CLOCK_GETTIME */ |
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613 |
|
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614 #ifndef HAVE_STRNDUP |
|
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615 char * strndup (char *str, size_t len); |
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616 #endif /* HAVE_STRNDUP */ |
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617 |
|
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618 |
|
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619 /*============================================================*/ |
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620 /* BINARY STRINGS */ |
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621 /*============================================================*/ |
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622 |
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623 /* Compute a hash value of a binary string. |
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624 The hash must remain local to this machine, there is no guarantee that same input |
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625 will give same output on a different system (endianness) */ |
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626 uint32_t fd_os_hash ( uint8_t * string, size_t len ); |
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627 |
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628 /* This type used for binary strings that contain no \0 except as their last character. |
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629 It means some string operations can be used on it. */ |
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630 typedef uint8_t * os0_t; |
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631 |
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632 /* Same as strdup but for os0_t strings */ |
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633 os0_t os0dup_int(os0_t s, size_t l); |
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634 #define os0dup( _s, _l) (void *)os0dup_int((os0_t)(_s), _l) |
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635 |
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636 /* Check that an octet string value can be used as os0_t */ |
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637 static __inline__ int fd_os_is_valid_os0(uint8_t * os, size_t oslen) { |
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638 /* The only situation where it is not valid is when it contains a \0 inside the octet string */ |
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639 return (memchr(os, '\0', oslen) == NULL); |
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640 } |
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641 |
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642 /* The following type denotes a verified DiameterIdentity value (that contains only pure letters, digits, hyphen, dot) */ |
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643 typedef char * DiamId_t; |
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644 |
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645 /* Maximum length of a hostname we accept */ |
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646 #ifndef HOST_NAME_MAX |
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647 #define HOST_NAME_MAX 512 |
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648 #endif /* HOST_NAME_MAX */ |
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649 |
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650 /* Check if a binary string contains a valid Diameter Identity value. |
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651 rfc3588 states explicitely that such a Diameter Identity consists only of ASCII characters. */ |
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652 int fd_os_is_valid_DiameterIdentity(uint8_t * os, size_t ossz); |
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653 |
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654 /* The following function validates a string as a Diameter Identity or applies the IDNA transformation on it |
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655 if *inoutsz is != 0 on entry, *id may not be \0-terminated. |
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656 memory has the following meaning: 0: *id can be realloc'd. 1: *id must be malloc'd on output (was static) |
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657 */ |
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658 int fd_os_validate_DiameterIdentity(char ** id, size_t * inoutsz, int memory); |
|
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659 |
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660 /* Create an order relationship for binary strings (not needed to be \0 terminated). |
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661 It does NOT mimic strings relationships so that it is more efficient. It is case sensitive. |
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662 (the strings are actually first ordered by their lengh, then by their bytes contents) |
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663 returns: -1 if os1 < os2; +1 if os1 > os2; 0 if they are equal */ |
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664 int fd_os_cmp_int(os0_t os1, size_t os1sz, os0_t os2, size_t os2sz); |
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665 #define fd_os_cmp(_o1, _l1, _o2, _l2) fd_os_cmp_int((os0_t)(_o1), _l1, (os0_t)(_o2), _l2) |
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666 |
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667 /* A roughly case-insensitive variant, which actually only compares ASCII chars (0-127) in a case-insentitive maneer |
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668 -- it does not support locales where a lowercase letter uses more space than upper case, such as ? -> ss |
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669 It is slower than fd_os_cmp. |
|
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670 Note that the result is NOT the same as strcasecmp !!! |
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671 |
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672 This function gives the same order as fd_os_cmp, except when it finds 2 strings to be equal. |
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673 However this is not always sufficient: |
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674 for example fd_os_cmp gives: "Ac" < "aB" < "aa" |
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675 if you attempt to fd_os_almostcasesrch "Aa" you will actually have to go past "aB" which is > "Aa". |
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676 Therefore you can use the maybefurther parameter. |
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677 This parameter is 1 on return if os1 may have been stored further that os2 (assuming os2 values are ordered by fd_os_cmp) |
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678 and 0 if we are sure that it is not the case. |
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679 When looping through a list of fd_os_cmp classified values, this parameter must be used to stop looping, in addition to the comp result. |
|
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680 */ |
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681 int fd_os_almostcasesrch_int(uint8_t * os1, size_t os1sz, uint8_t * os2, size_t os2sz, int * maybefurther); |
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682 #define fd_os_almostcasesrch(_o1, _l1, _o2, _l2, _mb) fd_os_almostcasesrch_int((os0_t)(_o1), _l1, (os0_t)(_o2), _l2, _mb) |
| 0 | 683 |
|
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684 /* Analyze a DiameterURI and return its components. |
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685 Return EINVAL if the URI is not valid. |
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686 *diamid is malloc'd on function return and must be freed (it is processed by fd_os_validate_DiameterIdentity). |
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687 *secure is 0 (no security) or 1 (security enabled) on return. |
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688 *port is 0 (default) or a value in host byte order on return. |
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689 *transport is 0 (default) or IPPROTO_* on return. |
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690 *proto is 0 (default) or 'd' (diameter), 'r' (radius), or 't' (tacacs+) on return. |
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691 */ |
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692 int fd_os_parse_DiameterURI(uint8_t * uri, size_t urisz, DiamId_t * diamid, size_t * diamidlen, int * secure, uint16_t * port, int * transport, char *proto); |
|
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693 |
| 0 | 694 /*============================================================*/ |
| 695 /* THREADS */ | |
| 696 /*============================================================*/ | |
| 697 | |
| 698 /* Terminate a thread */ | |
| 699 static __inline__ int fd_thr_term(pthread_t * th) | |
| 700 { | |
| 701 void * th_ret = NULL; | |
| 702 | |
| 703 CHECK_PARAMS(th); | |
| 704 | |
| 705 /* Test if it was already terminated */ | |
| 706 if (*th == (pthread_t)NULL) | |
| 707 return 0; | |
| 708 | |
| 709 /* Cancel the thread if it is still running - ignore error if it was already terminated */ | |
| 710 (void) pthread_cancel(*th); | |
| 711 | |
| 712 /* Then join the thread */ | |
|
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713 CHECK_POSIX( pthread_join(*th, &th_ret) ); |
| 0 | 714 |
|
181
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715 if (th_ret == PTHREAD_CANCELED) { |
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716 TRACE_DEBUG(ANNOYING, "The thread %p was canceled", *th); |
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717 } else { |
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718 TRACE_DEBUG(CALL, "The thread %p returned %x", *th, th_ret); |
| 0 | 719 } |
| 720 | |
| 721 /* Clean the location */ | |
| 722 *th = (pthread_t)NULL; | |
| 723 | |
|
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724 return 0; |
| 0 | 725 } |
| 726 | |
|
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727 |
|
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728 /************* |
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729 Cancelation cleanup handlers for common objects |
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730 *************/ |
| 0 | 731 static __inline__ void fd_cleanup_mutex( void * mutex ) |
| 732 { | |
| 733 CHECK_POSIX_DO( pthread_mutex_unlock((pthread_mutex_t *)mutex), /* */); | |
| 734 } | |
| 735 | |
| 736 static __inline__ void fd_cleanup_rwlock( void * rwlock ) | |
| 737 { | |
| 738 CHECK_POSIX_DO( pthread_rwlock_unlock((pthread_rwlock_t *)rwlock), /* */); | |
| 739 } | |
| 740 | |
| 741 static __inline__ void fd_cleanup_buffer( void * buffer ) | |
| 742 { | |
| 743 free(buffer); | |
| 744 } | |
|
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745 static __inline__ void fd_cleanup_socket(void * sockptr) |
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746 { |
|
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747 if (sockptr && (*(int *)sockptr > 0)) { |
| 179 | 748 CHECK_SYS_DO( close(*(int *)sockptr), /* ignore */ ); |
| 184 | 749 *(int *)sockptr = -1; |
|
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750 } |
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751 } |
| 0 | 752 |
|
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753 |
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754 /*============================================================*/ |
| 0 | 755 /* LISTS */ |
| 756 /*============================================================*/ | |
| 757 | |
| 758 /* The following structure represents a chained list element */ | |
| 759 struct fd_list { | |
| 760 struct fd_list *next; /* next element in the list */ | |
| 761 struct fd_list *prev; /* previous element in the list */ | |
| 762 struct fd_list *head; /* head of the list */ | |
|
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763 void *o; /* additional pointer, used for any purpose (ex: start of the parent object) */ |
| 0 | 764 }; |
| 765 | |
| 766 /* Initialize a list element */ | |
|
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767 #define FD_LIST_INITIALIZER( _list_name ) \ |
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768 { .next = & _list_name, .prev = & _list_name, .head = & _list_name, .o = NULL } |
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769 #define FD_LIST_INITIALIZER_O( _list_name, _obj ) \ |
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770 { .next = & _list_name, .prev = & _list_name, .head = & _list_name, .o = _obj } |
|
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771 void fd_list_init ( struct fd_list * list, void * obj ); |
| 0 | 772 |
| 773 /* Return boolean, true if the list is empty */ | |
|
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774 #define FD_IS_LIST_EMPTY( _list ) ((((struct fd_list *)(_list))->head == (_list)) && (((struct fd_list *)(_list))->next == (_list))) |
| 0 | 775 |
| 776 /* Insert an item in a list at known position */ | |
| 777 void fd_list_insert_after ( struct fd_list * ref, struct fd_list * item ); | |
| 778 void fd_list_insert_before ( struct fd_list * ref, struct fd_list * item ); | |
| 779 | |
|
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780 /* Move all elements from a list at the end of another */ |
|
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781 void fd_list_move_end(struct fd_list * ref, struct fd_list * senti); |
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782 |
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783 /* Insert an item in an ordered list -- ordering function must be provided. If duplicate object found, EEXIST and it is returned in ref_duplicate */ |
| 0 | 784 int fd_list_insert_ordered( struct fd_list * head, struct fd_list * item, int (*cmp_fct)(void *, void *), void ** ref_duplicate); |
| 785 | |
| 786 /* Unlink an item from a list */ | |
| 787 void fd_list_unlink ( struct fd_list * item ); | |
| 788 | |
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789 |
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790 |
| 0 | 791 |
| 792 /*============================================================*/ | |
| 793 /* DICTIONARY */ | |
| 794 /*============================================================*/ | |
|
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795 |
| 0 | 796 /* Structure that contains the complete dictionary definitions */ |
| 797 struct dictionary; | |
| 798 | |
| 799 /* Structure that contains a dictionary object */ | |
| 800 struct dict_object; | |
| 801 | |
| 802 /* Types of object in the dictionary. */ | |
| 803 enum dict_object_type { | |
| 804 DICT_VENDOR = 1, /* Vendor */ | |
| 805 DICT_APPLICATION, /* Diameter Application */ | |
| 806 DICT_TYPE, /* AVP data type */ | |
| 807 DICT_ENUMVAL, /* Named constant (value of an enumerated AVP type) */ | |
| 808 DICT_AVP, /* AVP */ | |
| 809 DICT_COMMAND, /* Diameter Command */ | |
| 810 DICT_RULE /* a Rule for AVP in command or grouped AVP */ | |
| 811 #define DICT_TYPE_MAX DICT_RULE | |
| 812 }; | |
| 813 | |
| 814 /* Initialize a dictionary */ | |
| 815 int fd_dict_init(struct dictionary ** dict); | |
| 816 /* Destroy a dictionary */ | |
| 817 int fd_dict_fini(struct dictionary ** dict); | |
| 818 | |
| 819 /* | |
| 820 * FUNCTION: fd_dict_new | |
| 821 * | |
| 822 * PARAMETERS: | |
| 823 * dict : Pointer to the dictionnary where the object is created | |
| 824 * type : What kind of object must be created | |
| 825 * data : pointer to the data for the object. | |
| 826 * type parameter is used to determine the type of data (see bellow for detail). | |
| 827 * parent : a reference to a parent object, if needed. | |
| 828 * ref : upon successful creation, reference to new object is stored here if !null. | |
| 829 * | |
| 830 * DESCRIPTION: | |
| 831 * Create a new object in the dictionary. | |
| 832 * See following object sections in this header file for more information on data and parent parameters format. | |
| 833 * | |
| 834 * RETURN VALUE: | |
| 835 * 0 : The object is created in the dictionary. | |
| 836 * EINVAL : A parameter is invalid. | |
| 837 * EEXIST : This object is already defined in the dictionary (with conflicting data). | |
| 838 * If "ref" is not NULL, it points to the existing element on return. | |
| 839 * (other standard errors may be returned, too, with their standard meaning. Example: | |
| 840 * ENOMEM : Memory allocation for the new object element failed.) | |
| 841 */ | |
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842 int fd_dict_new ( struct dictionary * dict, enum dict_object_type type, void * data, struct dict_object * parent, struct dict_object ** ref ); |
| 0 | 843 |
| 844 /* | |
| 845 * FUNCTION: fd_dict_search | |
| 846 * | |
| 847 * PARAMETERS: | |
| 848 * dict : Pointer to the dictionnary where the object is searched | |
| 849 * type : type of object that is being searched | |
| 850 * criteria : how the object must be searched. See object-related sections bellow for more information. | |
| 851 * what : depending on criteria, the data that must be searched. | |
| 852 * result : On successful return, pointer to the object is stored here. | |
| 853 * retval : this value is returned if the object is not found and result is not NULL. | |
| 854 * | |
| 855 * DESCRIPTION: | |
| 856 * Perform a search in the dictionary. | |
| 857 * See the object-specific sections bellow to find how to look for each objects. | |
| 858 * If the "result" parameter is NULL, the function is used to check if an object is in the dictionary. | |
| 859 * Otherwise, a reference to the object is stored in result if found. | |
| 860 * If result is not NULL and the object is not found, retval is returned (should be 0 or ENOENT usually) | |
| 861 * | |
| 862 * RETURN VALUE: | |
| 863 * 0 : The object has been found in the dictionary, or *result is NULL. | |
| 864 * EINVAL : A parameter is invalid. | |
| 865 * ENOENT : No matching object has been found, and result was NULL. | |
| 866 */ | |
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867 int fd_dict_search ( struct dictionary * dict, enum dict_object_type type, int criteria, void * what, struct dict_object ** result, int retval ); |
| 0 | 868 |
| 869 /* Special case: get the generic error command object */ | |
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870 int fd_dict_get_error_cmd(struct dictionary * dict, struct dict_object ** obj); |
| 0 | 871 |
| 872 /* | |
| 873 * FUNCTION: fd_dict_getval | |
| 874 * | |
| 875 * PARAMETERS: | |
| 876 * object : Pointer to a dictionary object. | |
| 877 * data : pointer to a structure to hold the data for the object. | |
| 878 * The type is the same as "data" parameter in fd_dict_new function. | |
| 879 * | |
| 880 * DESCRIPTION: | |
| 881 * Retrieve content of a dictionary object. | |
| 882 * See following object sections in this header file for more information on data and parent parameters format. | |
| 883 * | |
| 884 * RETURN VALUE: | |
| 885 * 0 : The content of the object has been retrieved. | |
| 886 * EINVAL : A parameter is invalid. | |
| 887 */ | |
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888 int fd_dict_getval ( struct dict_object * object, void * val); |
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889 int fd_dict_gettype ( struct dict_object * object, enum dict_object_type * type); |
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890 int fd_dict_getdict ( struct dict_object * object, struct dictionary ** dict); |
| 0 | 891 |
| 892 /* Debug functions */ | |
| 893 void fd_dict_dump_object(struct dict_object * obj); | |
| 894 void fd_dict_dump(struct dictionary * dict); | |
| 895 | |
|
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896 /* Function to access full contents of the dictionary, see doc in dictionary.c */ |
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897 int fd_dict_getlistof(int criteria, void * parent, struct fd_list ** sentinel); |
|
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898 |
|
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899 /* Function to remove an entry from the dictionary. |
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900 This cannot be used if the object has children (for example a vendor with vendor-specific AVPs). |
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901 In such case, the children must be removed first. */ |
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902 int fd_dict_delete(struct dict_object * obj); |
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903 |
| 0 | 904 /* |
| 905 *************************************************************************** | |
| 906 * | |
| 907 * Vendor object | |
| 908 * | |
| 909 * These types are used to manage vendors in the dictionary | |
| 910 * | |
| 911 *************************************************************************** | |
| 912 */ | |
| 913 | |
| 914 /* Type to hold a Vendor ID: "SMI Network Management Private Enterprise Codes" (RFC3232) */ | |
| 915 typedef uint32_t vendor_id_t; | |
| 916 | |
| 917 /* Type to hold data associated to a vendor */ | |
| 918 struct dict_vendor_data { | |
| 919 vendor_id_t vendor_id; /* ID of a vendor */ | |
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920 char * vendor_name; /* The name of this vendor */ |
| 0 | 921 }; |
| 922 | |
| 923 /* The criteria for searching a vendor object in the dictionary */ | |
| 924 enum { | |
| 925 VENDOR_BY_ID = 10, /* "what" points to a vendor_id_t */ | |
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926 VENDOR_BY_NAME, /* "what" points to a char * */ |
| 0 | 927 VENDOR_OF_APPLICATION /* "what" points to a struct dict_object containing an application (see bellow) */ |
| 928 }; | |
| 929 | |
| 930 /*** | |
| 931 * API usage : | |
| 932 | |
| 933 Note: the value of "vendor_name" is copied when the object is created, and the string may be disposed afterwards. | |
| 934 On the other side, when value is retrieved with dict_getval, the string is not copied and MUST NOT be freed. It will | |
| 935 be freed automatically along with the object itself with call to dict_fini later. | |
| 936 | |
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937 - fd_dict_new: |
| 0 | 938 The "parent" parameter is not used for vendors. |
| 939 Sample code to create a vendor: | |
| 940 { | |
| 941 int ret; | |
| 942 struct dict_object * myvendor; | |
| 943 struct dict_vendor_data myvendordata = { 23455, "my vendor name" }; -- just an example... | |
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944 ret = fd_dict_new ( dict, DICT_VENDOR, &myvendordata, NULL, &myvendor ); |
| 0 | 945 } |
| 946 | |
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947 - fd_dict_search: |
| 0 | 948 Sample codes to look for a vendor object, by its id or name: |
| 949 { | |
| 950 int ret; | |
| 951 struct dict_object * vendor_found; | |
| 952 vendor_id_t vendorid = 23455; | |
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953 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_ID, &vendorid, &vendor_found, ENOENT); |
| 0 | 954 - or - |
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955 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_NAME, "my vendor name", &vendor_found, ENOENT); |
| 0 | 956 } |
| 957 | |
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958 - fd_dict_getval: |
| 0 | 959 Sample code to retrieve the data from a vendor object: |
| 960 { | |
| 961 int ret; | |
| 962 struct dict_object * myvendor; | |
| 963 struct dict_vendor_data myvendordata; | |
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964 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_NAME, "my vendor name", &myvendor, ENOENT); |
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965 ret = fd_dict_getval ( myvendor, &myvendordata ); |
| 0 | 966 printf("my vendor id: %d\n", myvendordata.vendor_id ); |
| 967 } | |
| 968 | |
| 969 */ | |
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970 |
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971 /* Special function: */ |
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972 uint32_t * fd_dict_get_vendorid_list(struct dictionary * dict); |
| 0 | 973 |
| 974 /* | |
| 975 *************************************************************************** | |
| 976 * | |
| 977 * Application object | |
| 978 * | |
| 979 * These types are used to manage Diameter applications in the dictionary | |
| 980 * | |
| 981 *************************************************************************** | |
| 982 */ | |
| 983 | |
| 984 /* Type to hold a Diameter application ID: IANA assigned value for this application. */ | |
| 985 typedef uint32_t application_id_t; | |
| 986 | |
| 987 /* Type to hold data associated to an application */ | |
| 988 struct dict_application_data { | |
| 989 application_id_t application_id; /* ID of the application */ | |
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990 char * application_name; /* The name of this application */ |
| 0 | 991 }; |
| 992 | |
| 993 /* The criteria for searching an application object in the dictionary */ | |
| 994 enum { | |
| 995 APPLICATION_BY_ID = 20, /* "what" points to a application_id_t */ | |
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996 APPLICATION_BY_NAME, /* "what" points to a char * */ |
| 0 | 997 APPLICATION_OF_TYPE, /* "what" points to a struct dict_object containing a type object (see bellow) */ |
| 998 APPLICATION_OF_COMMAND /* "what" points to a struct dict_object containing a command (see bellow) */ | |
| 999 }; | |
| 1000 | |
| 1001 /*** | |
| 1002 * API usage : | |
| 1003 | |
| 1004 The "parent" parameter of dict_new may point to a vendor object to inform of what vendor defines the application. | |
| 1005 for standard-track applications, the "parent" parameter should be NULL. | |
| 1006 The vendor associated to an application is retrieved with VENDOR_OF_APPLICATION search criteria on vendors. | |
| 1007 | |
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1008 - fd_dict_new: |
| 0 | 1009 Sample code for application creation: |
| 1010 { | |
| 1011 int ret; | |
| 1012 struct dict_object * vendor; | |
| 1013 struct dict_object * appl; | |
| 1014 struct dict_vendor_data vendor_data = { | |
| 1015 23455, | |
| 1016 "my vendor name" | |
| 1017 }; | |
| 1018 struct dict_application_data app_data = { | |
| 1019 9789, | |
| 1020 "my vendor's application" | |
| 1021 }; | |
| 1022 | |
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1023 ret = fd_dict_new ( dict, DICT_VENDOR, &vendor_data, NULL, &vendor ); |
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1024 ret = fd_dict_new ( dict, DICT_APPLICATION, &app_data, vendor, &appl ); |
| 0 | 1025 } |
| 1026 | |
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1027 - fd_dict_search: |
| 0 | 1028 Sample code to retrieve the vendor of an application |
| 1029 { | |
| 1030 int ret; | |
| 1031 struct dict_object * vendor, * appli; | |
| 1032 | |
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1033 ret = fd_dict_search ( dict, DICT_APPLICATION, APPLICATION_BY_NAME, "my vendor's application", &appli, ENOENT); |
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1034 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_OF_APPLICATION, appli, &vendor, ENOENT); |
| 0 | 1035 } |
| 1036 | |
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1037 - fd_dict_getval: |
| 0 | 1038 Sample code to retrieve the data from an application object: |
| 1039 { | |
| 1040 int ret; | |
| 1041 struct dict_object * appli; | |
| 1042 struct dict_application_data appl_data; | |
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1043 ret = fd_dict_search ( dict, DICT_APPLICATION, APPLICATION_BY_NAME, "my vendor's application", &appli, ENOENT); |
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1044 ret = fd_dict_getval ( appli, &appl_data ); |
| 0 | 1045 printf("my application id: %s\n", appl_data.application_id ); |
| 1046 } | |
| 1047 | |
| 1048 */ | |
| 1049 | |
| 1050 /* | |
| 1051 *************************************************************************** | |
| 1052 * | |
| 1053 * Type object | |
| 1054 * | |
| 1055 * These types are used to manage AVP data types in the dictionary | |
| 1056 * | |
| 1057 *************************************************************************** | |
| 1058 */ | |
| 1059 | |
| 1060 /* Type to store any AVP value */ | |
| 1061 union avp_value { | |
| 1062 struct { | |
| 1063 uint8_t *data; /* bytes buffer */ | |
| 1064 size_t len; /* length of the data buffer */ | |
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1065 } os; /* Storage for an octet string */ |
| 0 | 1066 int32_t i32; /* integer 32 */ |
| 1067 int64_t i64; /* integer 64 */ | |
| 1068 uint32_t u32; /* unsigned 32 */ | |
| 1069 uint64_t u64; /* unsigned 64 */ | |
| 1070 float f32; /* float 32 */ | |
| 1071 double f64; /* float 64 */ | |
| 1072 }; | |
| 1073 | |
| 1074 /* These are the basic AVP types defined in RFC3588bis */ | |
| 1075 enum dict_avp_basetype { | |
| 1076 AVP_TYPE_GROUPED, | |
| 1077 AVP_TYPE_OCTETSTRING, | |
| 1078 AVP_TYPE_INTEGER32, | |
| 1079 AVP_TYPE_INTEGER64, | |
| 1080 AVP_TYPE_UNSIGNED32, | |
| 1081 AVP_TYPE_UNSIGNED64, | |
| 1082 AVP_TYPE_FLOAT32, | |
| 1083 AVP_TYPE_FLOAT64 | |
| 1084 #define AVP_TYPE_MAX AVP_TYPE_FLOAT64 | |
| 1085 }; | |
| 1086 | |
| 1087 /* Callbacks that can be associated with a derived type to easily interpret the AVP value. */ | |
| 1088 /* | |
| 1089 * CALLBACK: dict_avpdata_interpret | |
| 1090 * | |
| 1091 * PARAMETERS: | |
| 1092 * val : Pointer to the AVP value that must be interpreted. | |
| 1093 * interpreted : The result of interpretation is stored here. The format and meaning depends on each type. | |
| 1094 * | |
| 1095 * DESCRIPTION: | |
| 1096 * This callback can be provided with a derived type in order to facilitate the interpretation of formated data. | |
| 1097 * For example, when an AVP of type "Address" is received, it can be used to convert the octetstring into a struct sockaddr. | |
| 1098 * This callback is not called directly, but through the message's API msg_avp_value_interpret function. | |
| 1099 * | |
| 1100 * RETURN VALUE: | |
| 1101 * 0 : Operation complete. | |
| 1102 * !0 : An error occurred, the error code is returned. | |
| 1103 */ | |
| 1104 typedef int (*dict_avpdata_interpret) (union avp_value * value, void * interpreted); | |
| 1105 /* | |
| 1106 * CALLBACK: dict_avpdata_encode | |
| 1107 * | |
| 1108 * PARAMETERS: | |
| 1109 * data : The formated data that must be stored in the AVP value. | |
| 1110 * val : Pointer to the AVP value storage area where the data must be stored. | |
| 1111 * | |
| 1112 * DESCRIPTION: | |
| 1113 * This callback can be provided with a derived type in order to facilitate the encoding of formated data. | |
| 1114 * For example, it can be used to convert a struct sockaddr in an AVP value of type Address. | |
| 1115 * This callback is not called directly, but through the message's API msg_avp_value_encode function. | |
| 1116 * If the callback is defined for an OctetString based type, the created string must be malloc'd. free will be called | |
| 1117 * automatically later. | |
| 1118 * | |
| 1119 * RETURN VALUE: | |
| 1120 * 0 : Operation complete. | |
| 1121 * !0 : An error occurred, the error code is returned. | |
| 1122 */ | |
| 1123 typedef int (*dict_avpdata_encode) (void * data, union avp_value * val); | |
| 1124 | |
| 1125 | |
| 1126 /* Type to hold data associated to a derived AVP data type */ | |
| 1127 struct dict_type_data { | |
| 1128 enum dict_avp_basetype type_base; /* How the data of such AVP must be interpreted */ | |
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1129 char * type_name; /* The name of this type */ |
| 0 | 1130 dict_avpdata_interpret type_interpret;/* cb to convert the AVP value in more comprehensive format (or NULL) */ |
| 1131 dict_avpdata_encode type_encode; /* cb to convert formatted data into an AVP value (or NULL) */ | |
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1132 char * (*type_dump)(union avp_value * val); /* cb called by fd_msg_dump_one for this type of data (if != NULL). Returned string must be freed. */ |
| 0 | 1133 }; |
| 1134 | |
| 1135 /* The criteria for searching a type object in the dictionary */ | |
| 1136 enum { | |
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1137 TYPE_BY_NAME = 30, /* "what" points to a char * */ |
| 0 | 1138 TYPE_OF_ENUMVAL, /* "what" points to a struct dict_object containing an enumerated constant (DICT_ENUMVAL, see bellow). */ |
| 1139 TYPE_OF_AVP /* "what" points to a struct dict_object containing an AVP object. */ | |
| 1140 }; | |
| 1141 | |
| 1142 | |
| 1143 /*** | |
| 1144 * API usage : | |
| 1145 | |
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1146 - fd_dict_new: |
| 0 | 1147 The "parent" parameter may point to an application object, when a type is defined by a Diameter application. |
| 1148 | |
| 1149 Sample code: | |
| 1150 { | |
| 1151 int ret; | |
| 1152 struct dict_object * mytype; | |
| 1153 struct dict_type_data mytypedata = | |
| 1154 { | |
| 1155 AVP_TYPE_OCTETSTRING, | |
| 1156 "Address", | |
| 1157 NULL, | |
| 1158 NULL | |
| 1159 }; | |
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1160 ret = fd_dict_new ( dict, DICT_TYPE, &mytypedata, NULL, &mytype ); |
| 0 | 1161 } |
| 1162 | |
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1163 - fd_dict_search: |
| 0 | 1164 Sample code: |
| 1165 { | |
| 1166 int ret; | |
| 1167 struct dict_object * address_type; | |
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1168 ret = fd_dict_search ( dict, DICT_TYPE, TYPE_BY_NAME, "Address", &address_type, ENOENT); |
| 0 | 1169 } |
| 1170 | |
| 1171 */ | |
| 1172 | |
| 1173 /* | |
| 1174 *************************************************************************** | |
| 1175 * | |
| 1176 * Enumerated values object | |
| 1177 * | |
| 1178 * These types are used to manage named constants of some AVP, | |
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1179 * for enumerated types. freeDiameter allows constants for types others than Unsigned32 |
| 0 | 1180 * |
| 1181 *************************************************************************** | |
| 1182 */ | |
| 1183 | |
| 1184 /* Type to hold data of named constants for AVP */ | |
| 1185 struct dict_enumval_data { | |
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1186 char * enum_name; /* The name of this constant */ |
| 0 | 1187 union avp_value enum_value; /* Value of the constant. Union term depends on parent type's base type. */ |
| 1188 }; | |
| 1189 | |
| 1190 /* The criteria for searching a constant in the dictionary */ | |
| 1191 enum { | |
| 1192 ENUMVAL_BY_STRUCT = 40, /* "what" points to a struct dict_enumval_request as defined bellow */ | |
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1193 ENUMVAL_BY_NAME, /* This cannot be used for researches */ |
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1194 ENUMVAL_BY_VALUE /* This cannot be used for researches */ |
| 0 | 1195 }; |
| 1196 | |
| 1197 struct dict_enumval_request { | |
| 1198 /* Identifier of the parent type, one of the following must not be NULL */ | |
| 1199 struct dict_object *type_obj; | |
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1200 char * type_name; |
| 0 | 1201 |
| 1202 /* Search criteria for the constant */ | |
| 1203 struct dict_enumval_data search; /* search.enum_value is used only if search.enum_name == NULL */ | |
| 1204 }; | |
| 1205 | |
| 1206 /*** | |
| 1207 * API usage : | |
| 1208 | |
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1209 - fd_dict_new: |
| 0 | 1210 The "parent" parameter must point to a derived type object. |
| 1211 Sample code to create a type "Boolean" with two constants "True" and "False": | |
| 1212 { | |
| 1213 int ret; | |
| 1214 struct dict_object * type_boolean; | |
| 1215 struct dict_type_data type_boolean_data = | |
| 1216 { | |
| 1217 AVP_TYPE_INTEGER32, | |
| 1218 "Boolean", | |
| 1219 NULL, | |
| 1220 NULL | |
| 1221 }; | |
| 1222 struct dict_enumval_data boolean_false = | |
| 1223 { | |
| 1224 .enum_name="False", | |
| 1225 .enum_value.i32 = 0 | |
| 1226 }; | |
| 1227 struct dict_enumval_data boolean_true = | |
| 1228 { | |
| 1229 .enum_name="True", | |
| 1230 .enum_value.i32 = -1 | |
| 1231 }; | |
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1232 ret = fd_dict_new ( dict, DICT_TYPE, &type_boolean_data, NULL, &type_boolean ); |
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1233 ret = fd_dict_new ( dict, DICT_ENUMVAL, &boolean_false, type_boolean, NULL ); |
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1234 ret = fd_dict_new ( dict, DICT_ENUMVAL, &boolean_true , type_boolean, NULL ); |
| 0 | 1235 |
| 1236 } | |
| 1237 | |
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1238 - fd_dict_search: |
| 0 | 1239 Sample code to look for a constant name, by its value: |
| 1240 { | |
| 1241 int ret; | |
| 1242 struct dict_object * value_found; | |
| 1243 struct dict_enumval_request boolean_by_value = | |
| 1244 { | |
| 1245 .type_name = "Boolean", | |
| 1246 .search.enum_name=NULL, | |
| 1247 .search.enum_value.i32 = -1 | |
| 1248 }; | |
| 1249 | |
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1250 ret = fd_dict_search ( dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &boolean_by_value, &value_found, ENOENT); |
| 0 | 1251 } |
| 1252 | |
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1253 - fd_dict_getval: |
| 0 | 1254 Sample code to retrieve the data from a constant object: |
| 1255 { | |
| 1256 int ret; | |
| 1257 struct dict_object * value_found; | |
| 1258 struct dict_enumval_data boolean_data = NULL; | |
| 1259 struct dict_enumval_request boolean_by_value = | |
| 1260 { | |
| 1261 .type_name = "Boolean", | |
| 1262 .search.enum_name=NULL, | |
| 1263 .search.enum_value.i32 = 0 | |
| 1264 }; | |
| 1265 | |
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1266 ret = fd_dict_search ( dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &boolean_by_value, &value_found, ENOENT); |
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1267 ret = fd_dict_getval ( value_found, &boolean_data ); |
| 0 | 1268 printf(" Boolean with value 0: %s", boolean_data.enum_name ); |
| 1269 } | |
| 1270 */ | |
| 1271 | |
| 1272 /* | |
| 1273 *************************************************************************** | |
| 1274 * | |
| 1275 * AVP object | |
| 1276 * | |
| 1277 * These objects are used to manage AVP definitions in the dictionary | |
| 1278 * | |
| 1279 *************************************************************************** | |
| 1280 */ | |
| 1281 | |
| 1282 /* Type to hold an AVP code. For vendor 0, these codes are assigned by IANA. Otherwise, it is managed by the vendor */ | |
| 1283 typedef uint32_t avp_code_t; | |
| 1284 | |
| 1285 /* Values of AVP flags */ | |
| 1286 #define AVP_FLAG_VENDOR 0x80 | |
| 1287 #define AVP_FLAG_MANDATORY 0x40 | |
| 1288 #define AVP_FLAG_RESERVED3 0x20 | |
| 1289 #define AVP_FLAG_RESERVED4 0x10 | |
| 1290 #define AVP_FLAG_RESERVED5 0x08 | |
| 1291 #define AVP_FLAG_RESERVED6 0x04 | |
| 1292 #define AVP_FLAG_RESERVED7 0x02 | |
| 1293 #define AVP_FLAG_RESERVED8 0x01 | |
| 1294 | |
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1295 /* For dumping flags and values */ |
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1296 #define DUMP_AVPFL_str "%c%c" |
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1297 #define DUMP_AVPFL_val(_val) (_val & AVP_FLAG_VENDOR)?'V':'-' , (_val & AVP_FLAG_MANDATORY)?'M':'-' |
| 0 | 1298 |
| 1299 /* Type to hold data associated to an avp */ | |
| 1300 struct dict_avp_data { | |
| 1301 avp_code_t avp_code; /* Code of the avp */ | |
| 1302 vendor_id_t avp_vendor; /* Vendor of the AVP, or 0 */ | |
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1303 char * avp_name; /* Name of this AVP */ |
| 0 | 1304 uint8_t avp_flag_mask; /* Mask of fixed AVP flags */ |
| 1305 uint8_t avp_flag_val; /* Values of the fixed flags */ | |
| 1306 enum dict_avp_basetype avp_basetype; /* Basic type of data found in the AVP */ | |
| 1307 }; | |
| 1308 | |
| 1309 /* The criteria for searching an avp object in the dictionary */ | |
| 1310 enum { | |
| 1311 AVP_BY_CODE = 50, /* "what" points to an avp_code_t, vendor is always 0 */ | |
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1312 AVP_BY_NAME, /* "what" points to a char *, vendor is always 0 */ |
| 0 | 1313 AVP_BY_CODE_AND_VENDOR, /* "what" points to a struct dict_avp_request (see bellow), where avp_vendor and avp_code are set */ |
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1314 AVP_BY_NAME_AND_VENDOR, /* "what" points to a struct dict_avp_request (see bellow), where avp_vendor and avp_name are set */ |
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1315 AVP_BY_NAME_ALL_VENDORS /* "what" points to a string. Might be quite slow... */ |
| 0 | 1316 }; |
| 1317 | |
| 1318 /* Struct used for some researchs */ | |
| 1319 struct dict_avp_request { | |
| 1320 vendor_id_t avp_vendor; | |
| 1321 avp_code_t avp_code; | |
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1322 char * avp_name; |
| 0 | 1323 }; |
| 1324 | |
| 1325 | |
| 1326 /*** | |
| 1327 * API usage : | |
| 1328 | |
| 1329 If "parent" parameter is not NULL during AVP creation, it must point to a DICT_TYPE object. | |
| 1330 The extended type is then attached to the AVP. In case where it is an enumerated type, the value of | |
| 1331 AVP is automatically interpreted in debug messages, and in message checks. | |
| 1332 The derived type of an AVP can be retrieved with: dict_search ( DICT_TYPE, TYPE_OF_AVP, avp, ... ) | |
| 1333 | |
| 1334 To create the rules (ABNF) for children of Grouped AVP, see the DICT_RULE related part. | |
| 1335 | |
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1336 - fd_dict_new: |
| 0 | 1337 Sample code for AVP creation: |
| 1338 { | |
| 1339 int ret; | |
| 1340 struct dict_object * user_name_avp; | |
| 1341 struct dict_object * boolean_type; | |
| 1342 struct dict_object * sample_boolean_avp; | |
| 1343 struct dict_avp_data user_name_data = { | |
| 1344 1, // code | |
| 1345 0, // vendor | |
| 1346 "User-Name", // name | |
| 1347 AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, // fixed mask: V and M values must always be defined as follow. other flags can be set or cleared | |
| 1348 AVP_FLAG_MANDATORY, // the V flag must be cleared, the M flag must be set. | |
| 1349 AVP_TYPE_OCTETSTRING // User-Name AVP contains OctetString data (further precision such as UTF8String can be given with a parent derived type) | |
| 1350 }; | |
| 1351 struct dict_avp_data sample_boolean_data = { | |
| 1352 31337, | |
| 1353 23455, | |
| 1354 "Sample-Boolean", | |
| 1355 AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, | |
| 1356 AVP_FLAG_VENDOR, | |
| 1357 AVP_TYPE_INTEGER32 // This MUST be the same as parent type's | |
| 1358 }; | |
| 1359 | |
| 1360 -- Create an AVP with a base type -- | |
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1361 ret = fd_dict_new ( dict, DICT_AVP, &user_name_data, NULL, &user_name_avp ); |
| 0 | 1362 |
| 1363 -- Create an AVP with a derived type -- | |
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1364 ret = fd_dict_search ( dict, DICT_TYPE, TYPE_BY_NAME, "Boolean", &boolean_type, ENOENT); |
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1365 ret = fd_dict_new ( dict, DICT_AVP, &sample_boolean_data , boolean_type, &sample_boolean_avp ); |
| 0 | 1366 |
| 1367 } | |
| 1368 | |
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1369 - fd_dict_search: |
| 0 | 1370 Sample code to look for an AVP |
| 1371 { | |
| 1372 int ret; | |
| 1373 struct dict_object * avp_username; | |
| 1374 struct dict_object * avp_sampleboolean; | |
| 1375 struct dict_avp_request avpvendorboolean = | |
| 1376 { | |
| 1377 .avp_vendor = 23455, | |
| 1378 .avp_name = "Sample-Boolean" | |
| 1379 }; | |
| 1380 | |
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1381 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME, "User-Name", &avp_username, ENOENT); |
| 0 | 1382 |
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1383 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME_AND_VENDOR, &avpvendorboolean, &avp_sampleboolean, ENOENT); |
| 0 | 1384 |
| 1385 } | |
| 1386 | |
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1387 - fd_dict_getval: |
| 0 | 1388 Sample code to retrieve the data from an AVP object: |
| 1389 { | |
| 1390 int ret; | |
| 1391 struct dict_object * avp_username; | |
| 1392 struct dict_avp_data user_name_data; | |
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1393 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME, "User-Name", &avp_username, ENOENT); |
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1394 ret = fd_dict_getval ( avp_username, &user_name_data ); |
| 0 | 1395 printf("User-Name code: %d\n", user_name_data.avp_code ); |
| 1396 } | |
| 1397 | |
| 1398 */ | |
| 1399 | |
| 1400 /* | |
| 1401 *************************************************************************** | |
| 1402 * | |
| 1403 * Command object | |
| 1404 * | |
| 1405 * These types are used to manage commands objects in the dictionary | |
| 1406 * | |
| 1407 *************************************************************************** | |
| 1408 */ | |
| 1409 | |
| 1410 /* Type to hold a Diameter command code: IANA assigned values. 0x0-0x7fffff=standard, 0x800000-0xfffffd=vendors, 0xfffffe-0xffffff=experimental */ | |
| 1411 typedef uint32_t command_code_t; | |
| 1412 | |
| 1413 /* Values of command flags */ | |
| 1414 #define CMD_FLAG_REQUEST 0x80 | |
| 1415 #define CMD_FLAG_PROXIABLE 0x40 | |
| 1416 #define CMD_FLAG_ERROR 0x20 | |
| 1417 #define CMD_FLAG_RETRANSMIT 0x10 | |
| 1418 #define CMD_FLAG_RESERVED5 0x08 | |
| 1419 #define CMD_FLAG_RESERVED6 0x04 | |
| 1420 #define CMD_FLAG_RESERVED7 0x02 | |
| 1421 #define CMD_FLAG_RESERVED8 0x01 | |
| 1422 | |
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1423 /* For dumping flags and values */ |
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1424 #define DUMP_CMDFL_str "%c%c%c%c" |
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1425 #define DUMP_CMDFL_val(_val) (_val & CMD_FLAG_REQUEST)?'R':'-' , (_val & CMD_FLAG_PROXIABLE)?'P':'-' , (_val & CMD_FLAG_ERROR)?'E':'-' , (_val & CMD_FLAG_RETRANSMIT)?'T':'-' |
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1426 |
| 0 | 1427 /* Type to hold data associated to a command */ |
| 1428 struct dict_cmd_data { | |
| 1429 command_code_t cmd_code; /* code of the command */ | |
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1430 char * cmd_name; /* Name of the command */ |
| 0 | 1431 uint8_t cmd_flag_mask; /* Mask of fixed-value flags */ |
| 1432 uint8_t cmd_flag_val; /* values of the fixed flags */ | |
| 1433 }; | |
| 1434 | |
| 1435 /* The criteria for searching an avp object in the dictionary */ | |
| 1436 enum { | |
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1437 CMD_BY_NAME = 60, /* "what" points to a char * */ |
| 0 | 1438 CMD_BY_CODE_R, /* "what" points to a command_code_t. The "Request" command is returned. */ |
| 1439 CMD_BY_CODE_A, /* "what" points to a command_code_t. The "Answer" command is returned. */ | |
| 1440 CMD_ANSWER /* "what" points to a struct dict_object of a request command. The corresponding "Answer" command is returned. */ | |
| 1441 }; | |
| 1442 | |
| 1443 | |
| 1444 /*** | |
| 1445 * API usage : | |
| 1446 | |
| 1447 The "parent" parameter of dict_new may point to an application object to inform of what application defines the command. | |
| 1448 The application associated to a command is retrieved with APPLICATION_OF_COMMAND search criteria on applications. | |
| 1449 | |
| 1450 To create the rules for children of commands, see the DICT_RULE related part. | |
| 1451 | |
| 1452 Note that the "Request" and "Answer" commands are two independant objects. This allows to have different rules for each. | |
| 1453 | |
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1454 - fd_dict_new: |
| 0 | 1455 Sample code for command creation: |
| 1456 { | |
| 1457 int ret; | |
| 1458 struct dict_object * cer; | |
| 1459 struct dict_object * cea; | |
| 1460 struct dict_cmd_data ce_data = { | |
| 1461 257, // code | |
| 1462 "Capabilities-Exchange-Request", // name | |
| 1463 CMD_FLAG_REQUEST, // mask | |
| 1464 CMD_FLAG_REQUEST // value. Only the "R" flag is constrained here, set. | |
| 1465 }; | |
| 1466 | |
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1467 ret = fd_dict_new (dict, DICT_COMMAND, &ce_data, NULL, &cer ); |
| 0 | 1468 |
| 1469 ce_data.cmd_name = "Capabilities-Exchange-Answer"; | |
| 1470 ce_data.cmd_flag_val = 0; // Same constraint on "R" flag, but this time it must be cleared. | |
| 1471 | |
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1472 ret = fd_dict_new ( dict, DICT_COMMAND, &ce_data, NULL, &cea ); |
| 0 | 1473 } |
| 1474 | |
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1475 - fd_dict_search: |
| 0 | 1476 Sample code to look for a command |
| 1477 { | |
| 1478 int ret; | |
| 1479 struct dict_object * cer, * cea; | |
| 1480 command_code_t code = 257; | |
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1481 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &cer, ENOENT); |
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1482 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_CODE_R, &code, &cer, ENOENT); |
| 0 | 1483 } |
| 1484 | |
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1485 - fd_dict_getval: |
| 0 | 1486 Sample code to retrieve the data from a command object: |
| 1487 { | |
| 1488 int ret; | |
| 1489 struct dict_object * cer; | |
| 1490 struct dict_object * cea; | |
| 1491 struct dict_cmd_data cea_data; | |
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1492 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &cer, ENOENT); |
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1493 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_ANSWER, cer, &cea, ENOENT); |
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1494 ret = fd_dict_getval ( cea, &cea_data ); |
| 0 | 1495 printf("Answer to CER: %s\n", cea_data.cmd_name ); |
| 1496 } | |
| 1497 | |
| 1498 */ | |
| 1499 | |
| 1500 /* | |
| 1501 *************************************************************************** | |
| 1502 * | |
| 1503 * Rule object | |
| 1504 * | |
| 1505 * These objects are used to manage rules in the dictionary (ABNF implementation) | |
| 1506 * This is used for checking messages validity (more powerful than a DTD) | |
| 1507 * | |
| 1508 *************************************************************************** | |
| 1509 */ | |
| 1510 | |
| 1511 /* This defines the kind of rule that is defined */ | |
| 1512 enum rule_position { | |
| 1513 RULE_FIXED_HEAD = 1, /* The AVP must be at the head of the group. The rule_order field is used to specify the position. */ | |
| 1514 RULE_REQUIRED, /* The AVP must be present in the parent, but its position is not defined. */ | |
| 1515 RULE_OPTIONAL, /* The AVP may be present in the message. Used to specify a max number of occurences for example */ | |
| 1516 RULE_FIXED_TAIL /* The AVP must be at the end of the group. The rule_order field is used to specify the position. */ | |
| 1517 }; | |
| 1518 | |
| 1519 /* Content of a RULE object data */ | |
| 1520 struct dict_rule_data { | |
| 1521 struct dict_object *rule_avp; /* Pointer to the AVP object that is concerned by this rule */ | |
| 1522 enum rule_position rule_position; /* The position in which the rule_avp must appear in the parent */ | |
| 1523 unsigned rule_order; /* for RULE_FIXED_* rules, the place. 1,2,3.. for HEAD rules; ...,3,2,1 for TAIL rules. */ | |
| 1524 int rule_min; /* Minimum number of occurences. -1 means "default": 0 for optional rules, 1 for other rules */ | |
| 1525 int rule_max; /* Maximum number of occurences. -1 means no maximum. 0 means the AVP is forbidden. */ | |
| 1526 }; | |
| 1527 | |
| 1528 /* The criteria for searching a rule in the dictionary */ | |
| 1529 enum { | |
| 1530 RULE_BY_AVP_AND_PARENT = 70 /* "what" points to a struct dict_rule_request -- see bellow. This is used to query "what is the rule for this AVP in this group?" */ | |
| 1531 }; | |
| 1532 | |
| 1533 /* Structure for querying the dictionary about a rule */ | |
| 1534 struct dict_rule_request { | |
| 1535 struct dict_object *rule_parent; /* The grouped avp or command to which the rule apply */ | |
| 1536 struct dict_object *rule_avp; /* The AVP concerned by this rule */ | |
| 1537 }; | |
| 1538 | |
| 1539 | |
| 1540 /*** | |
| 1541 * API usage : | |
| 1542 | |
| 1543 The "parent" parameter can not be NULL. It points to the object (grouped avp or command) to which this rule apply (i.e. for which the ABNF is defined). | |
| 1544 | |
|
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1545 - fd_dict_new: |
| 0 | 1546 Sample code for rule creation. Let's create the Proxy-Info grouped AVP for example. |
| 1547 { | |
| 1548 int ret; | |
| 1549 struct dict_object * proxy_info_avp; | |
| 1550 struct dict_object * proxy_host_avp; | |
| 1551 struct dict_object * proxy_state_avp; | |
| 1552 struct dict_object * diameteridentity_type; | |
| 1553 struct dict_rule_data rule_data; | |
| 1554 struct dict_type_data di_type_data = { AVP_TYPE_OCTETSTRING, "DiameterIdentity", NULL, NULL }; | |
| 1555 struct dict_avp_data proxy_info_data = { 284, 0, "Proxy-Info", AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_GROUPED }; | |
| 1556 struct dict_avp_data proxy_host_data = { 280, 0, "Proxy-Host", AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_OCTETSTRING }; | |
| 1557 struct dict_avp_data proxy_state_data = { 33, 0, "Proxy-State",AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_OCTETSTRING }; | |
| 1558 | |
| 1559 -- Create the parent AVP | |
|
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1560 ret = fd_dict_new ( dict, DICT_AVP, &proxy_info_data, NULL, &proxy_info_avp ); |
| 0 | 1561 |
| 1562 -- Create the first child AVP. | |
|
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1563 ret = fd_dict_new ( dict, DICT_TYPE, &di_type_data, NULL, &diameteridentity_type ); |
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1564 ret = fd_dict_new ( dict, DICT_AVP, &proxy_host_data, diameteridentity_type, &proxy_host_avp ); |
| 0 | 1565 |
| 1566 -- Create the other child AVP | |
|
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1567 ret = fd_dict_new ( dict, DICT_AVP, &proxy_state_data, NULL, &proxy_state_avp ); |
| 0 | 1568 |
| 1569 -- Now we can create the rules. Both children AVP are mandatory. | |
| 1570 rule_data.rule_position = RULE_REQUIRED; | |
| 1571 rule_data.rule_min = -1; | |
| 1572 rule_data.rule_max = -1; | |
| 1573 | |
| 1574 rule_data.rule_avp = proxy_host_avp; | |
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1575 ret = fd_dict_new ( dict, DICT_RULE, &rule_data, proxy_info_avp, NULL ); |
| 0 | 1576 |
| 1577 rule_data.rule_avp = proxy_state_avp; | |
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1578 ret = fd_dict_new ( dict, DICT_RULE, &rule_data, proxy_info_avp, NULL ); |
| 0 | 1579 } |
| 1580 | |
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1581 - fd_dict_search and fd_dict_getval are similar to previous examples. |
| 0 | 1582 |
| 1583 */ | |
| 1584 | |
| 1585 /* Define some hard-coded values */ | |
|
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1586 /* Application */ |
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1587 #define AI_RELAY 0xffffffff |
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1588 |
| 0 | 1589 /* Commands Codes */ |
| 1590 #define CC_CAPABILITIES_EXCHANGE 257 | |
| 1591 #define CC_RE_AUTH 258 | |
| 1592 #define CC_ACCOUNTING 271 | |
| 1593 #define CC_ABORT_SESSION 274 | |
| 1594 #define CC_SESSION_TERMINATION 275 | |
| 1595 #define CC_DEVICE_WATCHDOG 280 | |
| 1596 #define CC_DISCONNECT_PEER 282 | |
| 1597 | |
| 1598 /* AVPs (Vendor 0) */ | |
| 87 | 1599 #define AC_USER_NAME 1 |
| 0 | 1600 #define AC_PROXY_STATE 33 |
| 1601 #define AC_HOST_IP_ADDRESS 257 | |
| 1602 #define AC_AUTH_APPLICATION_ID 258 | |
| 1603 #define AC_ACCT_APPLICATION_ID 259 | |
| 1604 #define AC_VENDOR_SPECIFIC_APPLICATION_ID 260 | |
| 1605 #define AC_REDIRECT_HOST_USAGE 261 | |
| 1606 #define AC_REDIRECT_MAX_CACHE_TIME 262 | |
| 1607 #define AC_SESSION_ID 263 | |
| 1608 #define AC_ORIGIN_HOST 264 | |
| 1609 #define AC_SUPPORTED_VENDOR_ID 265 | |
| 1610 #define AC_VENDOR_ID 266 | |
| 1611 #define AC_FIRMWARE_REVISION 267 | |
| 1612 #define AC_RESULT_CODE 268 | |
| 1613 #define AC_PRODUCT_NAME 269 | |
| 1614 #define AC_DISCONNECT_CAUSE 273 | |
| 1615 #define ACV_DC_REBOOTING 0 | |
| 1616 #define ACV_DC_BUSY 1 | |
| 1617 #define ACV_DC_NOT_FRIEND 2 | |
| 1618 #define AC_ORIGIN_STATE_ID 278 | |
| 1619 #define AC_FAILED_AVP 279 | |
| 1620 #define AC_PROXY_HOST 280 | |
| 1621 #define AC_ERROR_MESSAGE 281 | |
| 1622 #define AC_ROUTE_RECORD 282 | |
| 1623 #define AC_DESTINATION_REALM 283 | |
| 1624 #define AC_PROXY_INFO 284 | |
| 1625 #define AC_REDIRECT_HOST 292 | |
| 1626 #define AC_DESTINATION_HOST 293 | |
| 1627 #define AC_ERROR_REPORTING_HOST 294 | |
| 1628 #define AC_ORIGIN_REALM 296 | |
| 1629 #define AC_INBAND_SECURITY_ID 299 | |
|
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1630 #define ACV_ISI_NO_INBAND_SECURITY 0 |
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1631 #define ACV_ISI_TLS 1 |
| 0 | 1632 |
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1633 /* Error codes from Base protocol |
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1634 (reference: http://www.iana.org/assignments/aaa-parameters/aaa-parameters.xml#aaa-parameters-4) |
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1635 Note that currently, rfc3588bis-26 has some different values for some of these |
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1636 */ |
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1637 #define ER_DIAMETER_MULTI_ROUND_AUTH 1001 |
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1638 |
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1639 #define ER_DIAMETER_SUCCESS 2001 |
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1640 #define ER_DIAMETER_LIMITED_SUCCESS 2002 |
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1641 |
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1642 #define ER_DIAMETER_COMMAND_UNSUPPORTED 3001 /* 5019 ? */ |
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1643 #define ER_DIAMETER_UNABLE_TO_DELIVER 3002 |
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1644 #define ER_DIAMETER_REALM_NOT_SERVED 3003 |
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1645 #define ER_DIAMETER_TOO_BUSY 3004 |
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1646 #define ER_DIAMETER_LOOP_DETECTED 3005 |
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1647 #define ER_DIAMETER_REDIRECT_INDICATION 3006 |
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1648 #define ER_DIAMETER_APPLICATION_UNSUPPORTED 3007 |
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1649 #define ER_DIAMETER_INVALID_HDR_BITS 3008 /* 5020 ? */ |
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1650 #define ER_DIAMETER_INVALID_AVP_BITS 3009 /* 5021 ? */ |
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1651 #define ER_DIAMETER_UNKNOWN_PEER 3010 /* 5018 ? */ |
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1652 |
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1653 #define ER_DIAMETER_AUTHENTICATION_REJECTED 4001 |
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1654 #define ER_DIAMETER_OUT_OF_SPACE 4002 |
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1655 #define ER_ELECTION_LOST 4003 |
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1656 |
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1657 #define ER_DIAMETER_AVP_UNSUPPORTED 5001 |
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1658 #define ER_DIAMETER_UNKNOWN_SESSION_ID 5002 |
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1659 #define ER_DIAMETER_AUTHORIZATION_REJECTED 5003 |
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1660 #define ER_DIAMETER_INVALID_AVP_VALUE 5004 |
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1661 #define ER_DIAMETER_MISSING_AVP 5005 |
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1662 #define ER_DIAMETER_RESOURCES_EXCEEDED 5006 |
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1663 #define ER_DIAMETER_CONTRADICTING_AVPS 5007 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1664 #define ER_DIAMETER_AVP_NOT_ALLOWED 5008 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1665 #define ER_DIAMETER_AVP_OCCURS_TOO_MANY_TIMES 5009 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1666 #define ER_DIAMETER_NO_COMMON_APPLICATION 5010 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1667 #define ER_DIAMETER_UNSUPPORTED_VERSION 5011 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1668 #define ER_DIAMETER_UNABLE_TO_COMPLY 5012 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1669 #define ER_DIAMETER_INVALID_BIT_IN_HEADER 5013 /* 3011 ? */ |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1670 #define ER_DIAMETER_INVALID_AVP_LENGTH 5014 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1671 #define ER_DIAMETER_INVALID_MESSAGE_LENGTH 5015 /* 3012 ? */ |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1672 #define ER_DIAMETER_INVALID_AVP_BIT_COMBO 5016 /* deprecated? */ |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1673 #define ER_DIAMETER_NO_COMMON_SECURITY 5017 |
| 0 | 1674 |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1675 |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1676 /*============================================================*/ |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1677 /* SESSIONS */ |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1678 /*============================================================*/ |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1679 |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1680 /* Modules that want to associate a state with a Session-Id must first register a handler of this type */ |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1681 struct session_handler; |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1682 |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1683 /* This opaque structure represents a session associated with a Session-Id */ |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1684 struct session; |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1685 |
|
226
406f74f0789b
Few cosmetics changes
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
216
diff
changeset
|
1686 /* The state information that a module associate with a session -- each module defines its own data format */ |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1687 typedef void session_state; |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1688 |
|
453
9a8b3178a7a7
Postpone the creation of session expiry thread to allow some global variables to be set (debug level, etc)
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
340
diff
changeset
|
1689 /* The following function must be called to activate the session expiry mechanism */ |
|
9a8b3178a7a7
Postpone the creation of session expiry thread to allow some global variables to be set (debug level, etc)
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
340
diff
changeset
|
1690 int fd_sess_start(void); |
|
9a8b3178a7a7
Postpone the creation of session expiry thread to allow some global variables to be set (debug level, etc)
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
340
diff
changeset
|
1691 |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1692 /* |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1693 * FUNCTION: fd_sess_handler_create |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1694 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1695 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1696 * handler : location where the new handler must be stored. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1697 * cleanup : a callback function that must be called when the session with associated data is destroyed. |
|
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
1698 * opaque : A pointer that is passed to the cleanup callback -- the content is never examined by the framework. |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1699 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1700 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1701 * Create a new session handler. This is needed by a module to associate a state with a session object. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1702 * The cleanup handler is called when the session timeout expires, or fd_sess_destroy is called. It must free |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1703 * the state associated with the session, and eventually trig other actions (send a STR, ...). |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1704 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1705 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1706 * 0 : The new handler has been created. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1707 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1708 * ENOMEM : Not enough memory to complete the operation |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1709 */ |
|
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1710 int fd_sess_handler_create_internal ( struct session_handler ** handler, void (*cleanup)(session_state * state, os0_t sid, void * opaque), void * opaque ); |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1711 /* Macro to avoid casting everywhere */ |
|
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
1712 #define fd_sess_handler_create( _handler, _cleanup, _opaque ) \ |
|
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1713 fd_sess_handler_create_internal( (_handler), (void (*)(session_state *, os0_t, void *))(_cleanup), (void *)(_opaque) ) |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1714 |
|
340
81821e9f6988
Fix issue on session cleanup callback parameters -- thanks Souheil for reporting.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
336
diff
changeset
|
1715 |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1716 /* |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1717 * FUNCTION: fd_sess_handler_destroy |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1718 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1719 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1720 * handler : location of an handler created by fd_sess_handler_create. |
|
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
1721 * opaque : the opaque pointer registered with the callback is restored here (if ! NULL). |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1722 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1723 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1724 * This destroys a session handler (typically called when an application is shutting down). |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1725 * If sessions states are registered with this handler, the cleanup callback is called on them. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1726 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1727 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1728 * 0 : The handler was destroyed. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1729 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1730 * ENOMEM : Not enough memory to complete the operation |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1731 */ |
|
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
1732 int fd_sess_handler_destroy ( struct session_handler ** handler, void **opaque ); |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1733 |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1734 |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1735 |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1736 /* |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1737 * FUNCTION: fd_sess_new |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1738 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1739 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1740 * session : The location where the session object will be created upon success. |
|
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1741 * diamid : a Diameter Identity, or NULL. |
|
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1742 * diamidlen : if diamid is \0-terminated, this can be 0. Otherwise, the length of diamid. |
|
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1743 * opt : Additional string, or NULL. Usage is described bellow. |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1744 * optlen : if opt is \0-terminated, this can be 0. Otherwise, the length of opt. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1745 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1746 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1747 * Create a new session object. The Session-Id string associated with this session is generated as follow: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1748 * If diamId parameter is provided, the string is created according to the RFC: <diamId>;<high32>;<low32>[;opt] where |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1749 * diamId is a Diameter Identity. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1750 * high32 and low32 are the parts of a monotonic 64 bits counter initialized to (time, 0) at startup. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1751 * opt is an optional string that can be concatenated to the identifier. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1752 * If diamId is NULL, the string is exactly the content of opt. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1753 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1754 * RETURN VALUE: |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1755 * 0 : The session is created. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1756 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1757 * EALREADY : A session with the same name already exists (returned in *session) |
|
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
2
diff
changeset
|
1758 * ENOMEM : Not enough memory to complete the operation |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1759 */ |
|
706
4ffbc9f1e922
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1760 int fd_sess_new ( struct session ** session, DiamId_t diamid, size_t diamidlen, uint8_t * opt, size_t optlen ); |
|
3
ef303f1078ab
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parents:
2
diff
changeset
|
1761 |
|
ef303f1078ab
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parents:
2
diff
changeset
|
1762 /* |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1763 * FUNCTION: fd_sess_fromsid |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1764 * |
|
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Progress; added session module; testsess to be completed
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|
1765 * PARAMETERS: |
|
706
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|
1766 * sid : pointer to a string containing a Session-Id (should be UTF-8). |
|
3
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parents:
2
diff
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|
1767 * len : length of the sid string (which does not need to be '\0'-terminated) |
|
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parents:
2
diff
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|
1768 * session : On success, pointer to the session object created / retrieved. |
|
653
34373acfbc6a
Added sample C++ file in _sample extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
649
diff
changeset
|
1769 * isnew : if not NULL, set to 1 on return if the session object has been created, 0 if it was simply retrieved. |
|
2
d8ce06172629
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
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|
1770 * |
|
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1771 * DESCRIPTION: |
|
85
e5fcd672caff
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
83
diff
changeset
|
1772 * Retrieve a session object from a Session-Id string. In case no session object was previously existing with this |
|
3
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1773 * id, a new object is silently created (equivalent to fd_sess_new with flag SESSION_NEW_FULL). |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1774 * |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1775 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1776 * 0 : The session parameter has been updated. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1777 * EINVAL : A parameter is invalid. |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1778 * ENOMEM : Not enough memory to complete the operation |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1779 */ |
|
706
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|
1780 int fd_sess_fromsid ( uint8_t * sid, size_t len, struct session ** session, int * isnew); |
|
3
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1781 |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1782 /* |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1783 * FUNCTION: fd_sess_getsid |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1784 * |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1785 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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|
1786 * session : Pointer to a session object. |
|
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1787 * sid : On success, the location of the sid is stored here. |
|
2
d8ce06172629
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parents:
1
diff
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|
1788 * |
|
3
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Sebastien Decugis <sdecugis@nict.go.jp>
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1789 * DESCRIPTION: |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1790 * Retrieve the session identifier (Session-Id) corresponding to a session object. |
|
706
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1791 * The returned sid is a \0-terminated binary string which might be UTF-8 (but there is no guarantee in the framework). |
|
3
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parents:
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changeset
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1792 * It may be used for example to set the value of an AVP. |
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ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
2
diff
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1793 * Note that the sid string is not copied, just its reference... do not free it! |
|
2
d8ce06172629
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parents:
1
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1794 * |
|
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1795 * RETURN VALUE: |
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706
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1796 * 0 : The sid & len parameters have been updated. |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1797 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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1798 */ |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
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|
1799 int fd_sess_getsid ( struct session * session, os0_t * sid, size_t * sidlen ); |
|
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1800 |
|
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parents:
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|
1801 /* |
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parents:
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1802 * FUNCTION: fd_sess_settimeout |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
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|
1803 * |
|
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|
1804 * PARAMETERS: |
|
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parents:
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|
1805 * session : The session for which to set the timeout. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1806 * timeout : The date when the session times out. |
|
2
d8ce06172629
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
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|
1807 * |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
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|
1808 * DESCRIPTION: |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1809 * Set the lifetime for a given session object. This function may be |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1810 * called several times on the same object to update the timeout value. |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1811 * When the timeout date is reached, the cleanup handler of each |
|
ef303f1078ab
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parents:
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|
1812 * module that registered data with this session is called, then the |
|
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|
1813 * session is cleared. |
|
2
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1
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|
1814 * |
|
3
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1815 * There is a possible race condition between cleanup of the session |
|
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diff
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|
1816 * and use of its data; applications should ensure that they are not |
|
ef303f1078ab
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parents:
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|
1817 * using data from a session that is about to expire / expired. |
|
2
d8ce06172629
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1
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|
1818 * |
|
3
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parents:
2
diff
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1819 * RETURN VALUE: |
|
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1820 * 0 : The session timeout has been updated. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1821 * EINVAL : A parameter is invalid. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1822 */ |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1823 int fd_sess_settimeout( struct session * session, const struct timespec * timeout ); |
|
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|
1824 |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1825 /* |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1826 * FUNCTION: fd_sess_destroy |
|
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parents:
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1827 * |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1828 * PARAMETERS: |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1829 * session : Pointer to a session object. |
|
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parents:
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|
1830 * |
|
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parents:
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diff
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|
1831 * DESCRIPTION: |
|
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parents:
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|
1832 * Destroys all associated states of a session, if any. |
|
3
ef303f1078ab
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parents:
2
diff
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|
1833 * Equivalent to a session timeout expired, but the effect is immediate. |
|
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|
1834 * The session itself is marked as deleted, and will be freed when it is not referenced |
|
4ffbc9f1e922
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|
1835 * by any message anymore. |
|
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1836 * |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1837 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1838 * 0 : The session no longer exists. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1839 * EINVAL : A parameter is invalid. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1840 */ |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1841 int fd_sess_destroy ( struct session ** session ); |
|
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1842 |
|
6
b0d377c79d80
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1843 /* |
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1844 * FUNCTION: fd_sess_reclaim |
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1845 * |
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1846 * PARAMETERS: |
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1847 * session : Pointer to a session object. |
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1848 * |
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1849 * DESCRIPTION: |
|
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1850 * Equivalent to fd_sess_destroy, only if no session_state is associated with the session. |
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1851 * Otherwise, this function has no effect (except that it sets *session to NULL). |
|
6
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1852 * |
|
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1853 * RETURN VALUE: |
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1854 * 0 : The session was reclaimed. |
|
6
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1855 * EINVAL : A parameter is invalid. |
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1856 */ |
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1857 int fd_sess_reclaim ( struct session ** session ); |
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1858 |
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1859 |
|
3
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1860 |
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1861 |
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1862 /* |
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1863 * FUNCTION: fd_sess_state_store |
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2
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1864 * |
|
3
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1865 * PARAMETERS: |
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ef303f1078ab
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|
1866 * handler : The handler with which the state is registered. |
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1867 * session : The session object with which the state is registered. |
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|
1868 * state : An application state (opaque data) to store with the session. |
|
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1869 * |
|
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|
1870 * DESCRIPTION: |
|
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diff
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|
1871 * Stores an application state with a session. This state can later be retrieved |
|
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parents:
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|
1872 * with fd_sess_state_retrieve, or implicitly in the cleanup handler when the session |
|
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|
1873 * is destroyed. |
|
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|
1874 * |
|
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|
1875 * RETURN VALUE: |
|
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|
1876 * 0 : The state has been stored. |
|
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1877 * EINVAL : A parameter is invalid. |
|
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|
1878 * EALREADY : Data was already associated with this session and client. |
|
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1879 * ENOMEM : Not enough memory to complete the operation |
|
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|
1880 */ |
|
6
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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diff
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|
1881 int fd_sess_state_store_internal ( struct session_handler * handler, struct session * session, session_state ** state ); |
|
5
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3
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|
1882 #define fd_sess_state_store( _handler, _session, _state ) \ |
|
6
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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diff
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|
1883 fd_sess_state_store_internal( (_handler), (_session), (void *)(_state) ) |
|
3
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|
1884 |
|
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|
1885 /* |
|
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|
1886 * FUNCTION: fd_sess_state_retrieve |
|
2
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|
1887 * |
|
3
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1888 * PARAMETERS: |
|
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1889 * handler : The handler with which the state was registered. |
|
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1890 * session : The session object with which the state was registered. |
|
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1891 * state : Location where the state must be saved if it is found. |
|
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|
1892 * |
|
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|
1893 * DESCRIPTION: |
|
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|
1894 * Retrieves a state saved by fd_sess_state_store. |
|
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|
1895 * After this function has been called, the state is no longer associated with |
|
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|
1896 * the session. A new call to fd_sess_state_store must be performed in order to |
|
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|
1897 * store again the data with the session. |
|
2
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|
1898 * |
|
3
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1899 * RETURN VALUE: |
|
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1900 * 0 : *state is updated (NULL or points to the state if it was found). |
|
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1901 * EINVAL : A parameter is invalid. |
|
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1902 */ |
|
620
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|
1903 int fd_sess_state_retrieve_internal ( struct session_handler * handler, struct session * session, session_state ** state ); |
|
5
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|
1904 #define fd_sess_state_retrieve( _handler, _session, _state ) \ |
|
6
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1905 fd_sess_state_retrieve_internal( (_handler), (_session), (void *)(_state) ) |
|
2
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1906 |
|
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|
1907 |
|
3
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1908 /* For debug */ |
|
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1909 void fd_sess_dump(int level, struct session * session); |
|
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1910 void fd_sess_dump_hdl(int level, struct session_handler * handler); |
|
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1911 |
|
778
003df4a9ade2
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1912 /* For statistics / monitoring: get the number of struct session in memory */ |
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1913 int fd_sess_getcount(uint32_t *cnt); |
|
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1914 |
|
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1915 /*============================================================*/ |
|
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1916 /* ROUTING */ |
|
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1917 /*============================================================*/ |
|
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1918 |
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1919 /* The following functions are helpers for the routing module. |
|
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1920 The routing data is stored in the message itself. */ |
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1921 |
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1922 /* Structure that contains the routing data for a message */ |
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1923 struct rt_data; |
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1924 |
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1925 /* Following functions are helpers to create the routing data of a message */ |
|
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1926 int fd_rtd_init(struct rt_data ** rtd); |
|
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1927 void fd_rtd_free(struct rt_data ** rtd); |
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1928 |
|
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1929 /* Add a peer to the candidates list. */ |
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1930 int fd_rtd_candidate_add(struct rt_data * rtd, DiamId_t peerid, size_t peeridlen, DiamId_t realm, size_t realmlen); |
|
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1931 |
|
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1932 /* Remove a peer from the candidates (if it is found). The search is case-insensitive. */ |
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1933 void fd_rtd_candidate_del(struct rt_data * rtd, uint8_t * id, size_t idsz); |
|
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1934 |
|
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1935 /* Extract the list of valid candidates, and initialize their scores to 0 */ |
|
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1936 void fd_rtd_candidate_extract(struct rt_data * rtd, struct fd_list ** candidates, int ini_score); |
|
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1937 |
|
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1938 /* If a peer returned a protocol error for this message, save it so that we don't try to send it there again */ |
|
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1939 int fd_rtd_error_add(struct rt_data * rtd, DiamId_t sentto, size_t senttolen, uint8_t * origin, size_t originsz, uint32_t rcode); |
|
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1940 |
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1941 /* The extracted list items have the following structure: */ |
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1942 struct rtd_candidate { |
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1943 struct fd_list chain; /* link in the list returned by the previous fct */ |
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1944 DiamId_t diamid; /* the diameter Id of the peer */ |
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1945 size_t diamidlen; /* cached size of the diamid string */ |
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1946 DiamId_t realm; /* the diameter realm of the peer */ |
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1947 size_t realmlen; /* cached size of realm */ |
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1948 int score; /* the current routing score for this peer, see fd_rt_out_register definition for details */ |
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1949 }; |
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1950 |
|
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1951 /* Reorder the list of peers by score */ |
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1952 int fd_rtd_candidate_reorder(struct fd_list * candidates); |
|
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1953 |
|
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|
1954 /* Note : it is fine for a callback to add a new entry in the candidates list after the list has been extracted. The diamid must then be malloc'd. */ |
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|
1955 /* Beware that this could lead to routing loops */ |
|
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1956 |
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|
1957 /*============================================================*/ |
| 0 | 1958 /* MESSAGES */ |
| 1959 /*============================================================*/ | |
| 1960 | |
| 1961 /* The following types are opaque */ | |
| 1962 struct msg; /* A message: command with children AVPs (possibly grand children) */ | |
| 1963 struct avp; /* AVP object */ | |
| 1964 | |
| 1965 /* Some details about chaining: | |
| 1966 * | |
| 1967 * A message is made of a header ( msg ) and 0 or more AVPs ( avp ). | |
| 1968 * The structure is a kind of tree, where some AVPs (grouped AVPs) can contain other AVPs. | |
| 1969 * Exemple: | |
| 1970 * msg | |
| 1971 * |-avp | |
| 1972 * |-gavp | |
| 1973 * | |-avp | |
| 1974 * | |-avp | |
| 1975 * | \-avp | |
| 1976 * |-avp | |
| 1977 * \-avp | |
| 1978 * | |
| 1979 */ | |
| 1980 | |
| 1981 /* The following type is used to point to either a msg or an AVP */ | |
| 1982 typedef void msg_or_avp; | |
| 1983 | |
| 1984 /* The Diameter protocol version */ | |
| 1985 #define DIAMETER_VERSION 1 | |
| 1986 | |
| 1987 /* In the two following types, some fields are marked (READONLY). | |
| 1988 * This means that the content of these fields will be overwritten by the daemon so modifying it is useless. | |
| 1989 */ | |
| 1990 | |
| 1991 /* The following structure represents the header of a message. All data is in host byte order. */ | |
| 1992 struct msg_hdr { | |
| 1993 uint8_t msg_version; /* (READONLY) Version of Diameter: must be DIAMETER_VERSION. */ | |
| 1994 uint32_t msg_length; /* (READONLY)(3 bytes) indicates the length of the message */ | |
| 1995 uint8_t msg_flags; /* Message flags: CMD_FLAG_* */ | |
| 1996 command_code_t msg_code; /* (3 bytes) the command-code. See dictionary-api.h for more detail */ | |
| 1997 application_id_t msg_appl; /* The application issuing this message */ | |
| 1998 uint32_t msg_hbhid; /* The Hop-by-Hop identifier of the message */ | |
| 1999 uint32_t msg_eteid; /* The End-to-End identifier of the message */ | |
| 2000 }; | |
| 2001 | |
| 2002 /* The following structure represents the visible content of an AVP. All data is in host byte order. */ | |
| 2003 struct avp_hdr { | |
| 2004 avp_code_t avp_code; /* the AVP Code */ | |
| 2005 uint8_t avp_flags; /* AVP_FLAG_* flags */ | |
| 2006 uint32_t avp_len; /* (READONLY)(Only 3 bytes are used) the length of the AVP as described in the RFC */ | |
| 2007 vendor_id_t avp_vendor; /* Only used if AVP_FLAG_VENDOR is present */ | |
| 2008 union avp_value *avp_value; /* pointer to the value of the AVP. NULL means that the value is not set / not understood. | |
| 2009 One should not directly change this value. Use the msg_avp_setvalue function instead. | |
| 2010 The content of the pointed structure can be changed directly, with this restriction: | |
| 2011 if the AVP is an OctetString, and you change the value of the pointer avp_value->os.data, then | |
| 2012 you must call free() on the previous value, and the new one must be free()-able. | |
| 2013 */ | |
| 2014 }; | |
| 2015 | |
| 2016 /* The following enum is used to browse inside message hierarchy (msg, gavp, avp) */ | |
| 2017 enum msg_brw_dir { | |
| 2018 MSG_BRW_NEXT = 1, /* Get the next element at the same level, or NULL if this is the last element. */ | |
| 2019 MSG_BRW_PREV, /* Get the previous element at the same level, or NULL if this is the first element. */ | |
| 2020 MSG_BRW_FIRST_CHILD, /* Get the first child AVP of this element, if any. */ | |
| 2021 MSG_BRW_LAST_CHILD, /* Get the last child AVP of this element, if any. */ | |
| 2022 MSG_BRW_PARENT, /* Get the parent element of this element, if any. Only the msg_t object has no parent. */ | |
| 2023 MSG_BRW_WALK /* This is equivalent to FIRST_CHILD or NEXT or PARENT->next, first that is not NULL. Use this to walk inside all AVPs. */ | |
| 2024 }; | |
| 2025 | |
| 2026 /* Some flags used in the functions bellow */ | |
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2027 #define AVPFL_SET_BLANK_VALUE 0x01 /* When creating an AVP, initialize its value to a blank area */ |
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2028 #define AVPFL_MAX AVPFL_SET_BLANK_VALUE /* The biggest valid flag value */ |
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2029 |
| 0 | 2030 #define MSGFL_ALLOC_ETEID 0x01 /* When creating a message, a new end-to-end ID is allocated and set in the message */ |
| 2031 #define MSGFL_ANSW_ERROR 0x02 /* When creating an answer message, set the 'E' bit and use the generic error ABNF instead of command-specific ABNF */ | |
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2032 #define MSGFL_ANSW_NOSID 0x04 /* When creating an answer message, do not add the Session-Id even if present in request */ |
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2033 #define MSGFL_MAX MSGFL_ANSW_NOSID /* The biggest valid flag value */ |
| 0 | 2034 |
| 2035 /**************************************************/ | |
| 2036 /* Message creation, manipulation, disposal */ | |
| 2037 /**************************************************/ | |
| 2038 /* | |
| 2039 * FUNCTION: fd_msg_avp_new | |
| 2040 * | |
| 2041 * PARAMETERS: | |
| 2042 * model : Pointer to a DICT_AVP dictionary object describing the avp to create, or NULL. | |
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2043 * flags : Flags to use in creation (AVPFL_*). |
| 0 | 2044 * avp : Upon success, pointer to the new avp is stored here. |
| 2045 * | |
| 2046 * DESCRIPTION: | |
| 2047 * Create a new AVP instance. | |
| 2048 * | |
| 2049 * RETURN VALUE: | |
| 2050 * 0 : The AVP is created. | |
| 2051 * EINVAL : A parameter is invalid. | |
| 2052 * (other standard errors may be returned, too, with their standard meaning. Example: | |
| 2053 * ENOMEM : Memory allocation for the new avp failed.) | |
| 2054 */ | |
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2055 int fd_msg_avp_new ( struct dict_object * model, int flags, struct avp ** avp ); |
| 0 | 2056 |
| 2057 /* | |
| 2058 * FUNCTION: fd_msg_new | |
| 2059 * | |
| 2060 * PARAMETERS: | |
| 2061 * model : Pointer to a DICT_COMMAND dictionary object describing the message to create, or NULL. | |
| 2062 * flags : combination of MSGFL_* flags. | |
| 2063 * msg : Upon success, pointer to the new message is stored here. | |
| 2064 * | |
| 2065 * DESCRIPTION: | |
| 2066 * Create a new empty Diameter message. | |
| 2067 * | |
| 2068 * RETURN VALUE: | |
| 2069 * 0 : The message is created. | |
| 2070 * EINVAL : A parameter is invalid. | |
| 2071 * (other standard errors may be returned, too, with their standard meaning. Example: | |
| 2072 * ENOMEM : Memory allocation for the new message failed.) | |
| 2073 */ | |
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2074 int fd_msg_new ( struct dict_object * model, int flags, struct msg ** msg ); |
| 0 | 2075 |
| 2076 /* | |
| 2077 * FUNCTION: msg_new_answer_from_req | |
| 2078 * | |
| 2079 * PARAMETERS: | |
| 2080 * dict : Pointer to the dictionary containing the model of the query. | |
| 2081 * msg : The location of the query on function call. Updated by the location of answer message on return. | |
| 2082 * flag : Pass MSGFL_ANSW_ERROR to indicate if the answer is an error message (will set the 'E' bit) | |
| 2083 * | |
| 2084 * DESCRIPTION: | |
| 2085 * This function creates the empty answer message corresponding to a request. | |
| 2086 * The header is set properly (R flag, ccode, appid, hbhid, eteid) | |
| 2087 * The Session-Id AVP is copied if present. | |
| 2088 * The calling code should usually call fd_msg_rescode_set function on the answer. | |
| 2089 * Upon return, the original query may be retrieved by calling fd_msg_answ_getq on the message. | |
| 2090 * | |
| 2091 * RETURN VALUE: | |
| 2092 * 0 : Operation complete. | |
| 2093 * !0 : an error occurred. | |
| 2094 */ | |
|
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2095 int fd_msg_new_answer_from_req ( struct dictionary * dict, struct msg ** msg, int flag ); |
| 0 | 2096 |
| 2097 /* | |
| 2098 * FUNCTION: fd_msg_browse | |
| 2099 * | |
| 2100 * PARAMETERS: | |
| 2101 * reference : Pointer to a struct msg or struct avp. | |
| 2102 * dir : Direction for browsing | |
| 2103 * found : If not NULL, updated with the element that has been found, if any, or NULL if no element was found / an error occurred. | |
| 2104 * depth : If not NULL, points to an integer representing the "depth" of this object in the tree. This is a relative value, updated on return. | |
| 2105 * | |
| 2106 * DESCRIPTION: | |
| 2107 * Explore the content of a message object (hierarchy). If "found" is null, only error checking is performed. | |
| 2108 * If "depth" is provided, it is updated as follow on successful function return: | |
| 2109 * - not modified for MSG_BRW_NEXT and MSG_BRW_PREV. | |
| 2110 * - *depth = *depth + 1 for MSG_BRW_FIRST_CHILD and MSG_BRW_LAST_CHILD. | |
| 2111 * - *depth = *depth - 1 for MSG_BRW_PARENT. | |
| 2112 * - *depth = *depth + X for MSG_BRW_WALK, with X between 1 (returned the 1st child) and -N (returned the Nth parent's next). | |
| 2113 * | |
| 2114 * RETURN VALUE: | |
| 2115 * 0 : found has been updated (if non NULL). | |
| 2116 * EINVAL : A parameter is invalid. | |
| 2117 * ENOENT : No element has been found where requested, and "found" was NULL (otherwise, *found is set to NULL and 0 is returned). | |
| 2118 */ | |
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2119 int fd_msg_browse_internal ( msg_or_avp * reference, enum msg_brw_dir dir, msg_or_avp ** found, int * depth ); |
| 0 | 2120 /* Macro to avoid having to cast the third parameter everywhere */ |
| 2121 #define fd_msg_browse( ref, dir, found, depth ) \ | |
| 2122 fd_msg_browse_internal( (ref), (dir), (void *)(found), (depth) ) | |
| 2123 | |
| 2124 | |
| 2125 /* | |
| 2126 * FUNCTION: fd_msg_avp_add | |
| 2127 * | |
| 2128 * PARAMETERS: | |
| 2129 * reference : Pointer to a valid msg or avp. | |
| 2130 * dir : location where the new AVP should be inserted, relative to the reference. MSG_BRW_PARENT and MSG_BRW_WALK are not valid. | |
| 2131 * avp : pointer to the AVP object that must be inserted. | |
| 2132 * | |
| 2133 * DESCRIPTION: | |
| 2134 * Adds an AVP into an object that can contain it: grouped AVP or message. | |
|
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2135 * Note that the added AVP will be freed at the same time as the object it is added to, |
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2136 * so it should not be freed after the call to this function. |
| 0 | 2137 * |
| 2138 * RETURN VALUE: | |
| 2139 * 0 : The AVP has been added. | |
| 2140 * EINVAL : A parameter is invalid. | |
| 2141 */ | |
| 2142 int fd_msg_avp_add ( msg_or_avp * reference, enum msg_brw_dir dir, struct avp *avp); | |
| 2143 | |
| 2144 /* | |
| 2145 * FUNCTION: fd_msg_search_avp | |
| 2146 * | |
| 2147 * PARAMETERS: | |
| 2148 * msg : The message structure in which to search the AVP. | |
| 2149 * what : The dictionary model of the AVP to search. | |
| 2150 * avp : location where the AVP reference is stored if found. | |
| 2151 * | |
| 2152 * DESCRIPTION: | |
| 2153 * Search the first top-level AVP of a given model inside a message. | |
| 2154 * Note: only the first instance of the AVP is returned by this function. | |
| 2155 * Note: only top-level AVPs are searched, not inside grouped AVPs. | |
| 2156 * Use msg_browse if you need more advanced research features. | |
| 2157 * | |
| 2158 * RETURN VALUE: | |
| 2159 * 0 : The AVP has been found. | |
| 2160 * EINVAL : A parameter is invalid. | |
| 2161 * ENOENT : No AVP has been found, and "avp" was NULL (otherwise, *avp is set to NULL and 0 returned). | |
| 2162 */ | |
|
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2163 int fd_msg_search_avp ( struct msg * msg, struct dict_object * what, struct avp ** avp ); |
| 0 | 2164 |
| 2165 /* | |
| 2166 * FUNCTION: fd_msg_free | |
| 2167 * | |
| 2168 * PARAMETERS: | |
| 2169 * object : pointer to the message or AVP object that must be unlinked and freed. | |
| 2170 * | |
| 2171 * DESCRIPTION: | |
| 2172 * Unlink and free a message or AVP object and its children. | |
| 2173 * If the object is an AVP linked into a message, the AVP is removed before being freed. | |
| 2174 * | |
| 2175 * RETURN VALUE: | |
| 2176 * 0 : The message has been freed. | |
| 2177 * EINVAL : A parameter is invalid. | |
| 2178 */ | |
| 2179 int fd_msg_free ( msg_or_avp * object ); | |
| 2180 | |
| 2181 /***************************************/ | |
| 2182 /* Dump functions */ | |
| 2183 /***************************************/ | |
| 2184 /* | |
| 2185 * FUNCTION: fd_msg_dump_* | |
| 2186 * | |
| 2187 * PARAMETERS: | |
| 2188 * level : the log level (INFO, FULL, ...) at which the object is dumped | |
| 2189 * obj : A msg or avp object. | |
| 2190 * | |
| 2191 * DESCRIPTION: | |
| 2192 * These functions dump the content of a message to the debug log | |
| 2193 * either recursively or only the object itself. | |
| 2194 * | |
| 2195 * RETURN VALUE: | |
| 2196 * - | |
| 2197 */ | |
| 2198 void fd_msg_dump_walk ( int level, msg_or_avp *obj ); | |
| 2199 void fd_msg_dump_one ( int level, msg_or_avp *obj ); | |
| 2200 | |
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2201 /* |
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2202 * FUNCTION: fd_msg_log |
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2203 * |
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2204 * PARAMETERS: |
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2205 * cause : Context for calling this function. This allows the log facility to be configured precisely. |
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2206 * msg : The message to log. |
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2207 * prefix_format: Printf-style format message that is printed ahead of the message. Might be reason for drop or so. |
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2208 * |
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2209 * DESCRIPTION: |
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2210 * This function is called when a Diameter message reaches some particular points in the fD framework. |
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2211 * The actual effect is configurable: log in a separate file, dump in the debug log, etc. |
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2212 * |
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2213 * RETURN VALUE: |
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2214 * - |
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2215 */ |
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2216 enum fd_msg_log_cause { |
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2217 FD_MSG_LOG_DROPPED = 0, /* message has been dropped by the framework */ |
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2218 FD_MSG_LOG_RECEIVED, /* message received from the network */ |
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2219 FD_MSG_LOG_SENT, /* message sent to another peer */ |
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2220 FD_MSG_LOG_NODELIVER /* message could not be delivered to any peer */ |
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2221 }; |
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2222 #define FD_MSG_LOG_MAX FD_MSG_LOG_NODELIVER |
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2223 void fd_msg_log( enum fd_msg_log_cause cause, struct msg * msg, const char * prefix_format, ... ); |
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2224 |
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2225 /* configure the msg_log facility */ |
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2226 enum fd_msg_log_method { |
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2227 FD_MSG_LOGTO_DEBUGONLY = 0, /* Simply log the message with other debug information, at the INFO level. This is default */ |
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2228 FD_MSG_LOGTO_FILE, /* Messages are dumped in a single file, defined in arg */ |
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2229 FD_MSG_LOGTO_DIR /* Messages are dumped in different files within one directory defined in arg. */ |
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2230 }; |
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2231 int fd_msg_log_config(enum fd_msg_log_cause cause, enum fd_msg_log_method method, const char * arg); |
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2232 void fd_msg_log_init(struct dictionary *dict); |
| 0 | 2233 |
| 2234 /*********************************************/ | |
| 2235 /* Message metadata management functions */ | |
| 2236 /*********************************************/ | |
| 2237 /* | |
| 2238 * FUNCTION: fd_msg_model | |
| 2239 * | |
| 2240 * PARAMETERS: | |
| 2241 * reference : Pointer to a valid msg or avp. | |
| 2242 * model : on success, pointer to the dictionary model of this command or AVP. NULL if the model is unknown. | |
| 2243 * | |
| 2244 * DESCRIPTION: | |
| 2245 * Retrieve the dictionary object describing this message or avp. If the object is unknown or the fd_msg_parse_dict has not been called, | |
| 2246 * *model is set to NULL. | |
| 2247 * | |
| 2248 * RETURN VALUE: | |
| 2249 * 0 : The model has been set. | |
| 2250 * EINVAL : A parameter is invalid. | |
| 2251 */ | |
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2252 int fd_msg_model ( msg_or_avp * reference, struct dict_object ** model ); |
| 0 | 2253 |
| 2254 /* | |
| 2255 * FUNCTION: fd_msg_hdr | |
| 2256 * | |
| 2257 * PARAMETERS: | |
| 2258 * msg : Pointer to a valid message object. | |
| 2259 * pdata : Upon success, pointer to the msg_hdr structure of this message. The fields may be modified. | |
| 2260 * | |
| 2261 * DESCRIPTION: | |
| 2262 * Retrieve location of modifiable section of a message. | |
| 2263 * | |
| 2264 * RETURN VALUE: | |
| 2265 * 0 : The location has been written. | |
| 2266 * EINVAL : A parameter is invalid. | |
| 2267 */ | |
|
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2268 int fd_msg_hdr ( struct msg *msg, struct msg_hdr ** pdata ); |
| 0 | 2269 |
| 2270 /* | |
| 2271 * FUNCTION: fd_msg_avp_hdr | |
| 2272 * | |
| 2273 * PARAMETERS: | |
| 2274 * avp : Pointer to a valid avp object. | |
| 2275 * pdata : Upon success, pointer to the avp_hdr structure of this avp. The fields may be modified. | |
| 2276 * | |
| 2277 * DESCRIPTION: | |
| 2278 * Retrieve location of modifiable data of an avp. | |
| 2279 * | |
| 2280 * RETURN VALUE: | |
| 2281 * 0 : The location has been written. | |
| 2282 * EINVAL : A parameter is invalid. | |
| 2283 */ | |
|
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2284 int fd_msg_avp_hdr ( struct avp *avp, struct avp_hdr ** pdata ); |
| 0 | 2285 |
| 2286 /* | |
| 2287 * FUNCTION: fd_msg_answ_associate, fd_msg_answ_getq, fd_msg_answ_detach | |
| 2288 * | |
| 2289 * PARAMETERS: | |
| 2290 * answer : the received answer message | |
| 2291 * query : the corresponding query that had been sent | |
| 2292 * | |
| 2293 * DESCRIPTION: | |
| 2294 * fd_msg_answ_associate associates a query msg with the received answer. | |
| 2295 * Query is retrieved with fd_msg_answ_getq. | |
| 2296 * If answer message is freed, the query is also freed. | |
| 2297 * If the msg_answ_detach function is called, the association is removed. | |
| 2298 * This is meant to be called from the daemon only. | |
| 2299 * | |
| 2300 * RETURN VALUE: | |
| 2301 * 0 : ok | |
| 2302 * EINVAL: a parameter is invalid | |
| 2303 */ | |
| 2304 int fd_msg_answ_associate( struct msg * answer, struct msg * query ); | |
|
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2305 int fd_msg_answ_getq ( struct msg * answer, struct msg ** query ); |
| 0 | 2306 int fd_msg_answ_detach ( struct msg * answer ); |
| 2307 | |
| 2308 /* | |
| 2309 * FUNCTION: fd_msg_anscb_associate, fd_msg_anscb_get | |
| 2310 * | |
| 2311 * PARAMETERS: | |
| 2312 * msg : the answer message | |
| 2313 * anscb : the callback to associate with the message | |
| 2314 * data : the data to pass to the callback | |
|
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2315 * timeout : (optional, use NULL if no timeout) a timeout associated with calling the cb. |
| 0 | 2316 * |
| 2317 * DESCRIPTION: | |
| 2318 * Associate or retrieve a callback with an answer message. | |
| 2319 * This is meant to be called from the daemon only. | |
| 2320 * | |
| 2321 * RETURN VALUE: | |
| 2322 * 0 : ok | |
| 2323 * EINVAL: a parameter is invalid | |
| 2324 */ | |
|
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2325 int fd_msg_anscb_associate( struct msg * msg, void ( *anscb)(void *, struct msg **), void * data, const struct timespec *timeout ); |
| 0 | 2326 int fd_msg_anscb_get ( struct msg * msg, void (**anscb)(void *, struct msg **), void ** data ); |
|
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|
2327 struct timespec *fd_msg_anscb_gettimeout( struct msg * msg ); /* returns NULL or a valid non-0 timespec */ |
| 0 | 2328 |
| 2329 /* | |
| 2330 * FUNCTION: fd_msg_rt_associate, fd_msg_rt_get | |
| 2331 * | |
| 2332 * PARAMETERS: | |
| 2333 * msg : the query message to be sent | |
| 2334 * list : the ordered list of possible next-peers | |
| 2335 * | |
| 2336 * DESCRIPTION: | |
| 2337 * Associate a routing list with a query, and retrieve it. | |
| 2338 * If the message is freed, the list is also freed. | |
| 2339 * | |
| 2340 * RETURN VALUE: | |
| 2341 * 0 : ok | |
| 2342 * EINVAL: a parameter is invalid | |
| 2343 */ | |
|
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2344 int fd_msg_rt_associate( struct msg * msg, struct rt_data ** rtd ); |
|
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2345 int fd_msg_rt_get ( struct msg * msg, struct rt_data ** rtd ); |
| 0 | 2346 |
| 2347 /* | |
| 2348 * FUNCTION: fd_msg_is_routable | |
| 2349 * | |
| 2350 * PARAMETERS: | |
| 2351 * msg : A msg object. | |
| 2352 * | |
| 2353 * DESCRIPTION: | |
| 2354 * This function returns a boolean telling if a given message is routable in the Diameter network, | |
| 2355 * or if it is a local link message only (ex: CER/CEA, DWR/DWA, ...). | |
| 2356 * | |
| 2357 * RETURN VALUE: | |
| 2358 * 0 : The message is not routable / an error occurred. | |
| 2359 * 1 : The message is routable. | |
| 2360 */ | |
| 2361 int fd_msg_is_routable ( struct msg * msg ); | |
| 2362 | |
| 2363 /* | |
| 2364 * FUNCTION: fd_msg_source_(g/s)et | |
| 2365 * | |
| 2366 * PARAMETERS: | |
| 2367 * msg : A msg object. | |
|
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2368 * diamid,len : The diameter id of the peer from which this message was received. |
| 0 | 2369 * add_rr : if true, a Route-Record AVP is added to the message with content diamid. In that case, dict must be supplied. |
| 2370 * dict : a dictionary with definition of Route-Record AVP (if add_rr is true) | |
| 2371 * | |
| 2372 * DESCRIPTION: | |
| 2373 * Store or retrieve the diameted id of the peer from which this message was received. | |
| 2374 * Will be used for example by the routing module to add the Route-Record AVP in forwarded requests, | |
| 2375 * or to direct answers to the appropriate peer. | |
| 2376 * | |
| 2377 * RETURN VALUE: | |
| 2378 * 0 : Operation complete. | |
| 2379 * !0 : an error occurred. | |
| 2380 */ | |
|
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2381 int fd_msg_source_set( struct msg * msg, DiamId_t diamid, size_t diamidlen, int add_rr, struct dictionary * dict ); |
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2382 int fd_msg_source_get( struct msg * msg, DiamId_t *diamid, size_t * diamidlen ); |
| 0 | 2383 |
| 2384 /* | |
| 2385 * FUNCTION: fd_msg_eteid_get | |
| 2386 * | |
| 2387 * PARAMETERS: | |
| 2388 * - | |
| 2389 * | |
| 2390 * DESCRIPTION: | |
| 2391 * Get a new unique end-to-end id value for the local peer. | |
| 2392 * | |
| 2393 * RETURN VALUE: | |
| 2394 * The new assigned value. No error code is defined. | |
| 2395 */ | |
| 2396 uint32_t fd_msg_eteid_get ( void ); | |
| 2397 | |
| 2398 | |
|
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2399 /* |
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2400 * FUNCTION: fd_msg_sess_get |
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2401 * |
|
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2402 * PARAMETERS: |
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2403 * dict : the dictionary that contains the Session-Id AVP definition |
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2404 * msg : A valid message. |
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2405 * session : Location to store the session pointer when retrieved. |
|
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2406 * isnew : Indicates if the session has been created. |
|
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2407 * |
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2408 * DESCRIPTION: |
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2409 * This function retrieves or creates the session object corresponding to a message. |
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2410 * If the message does not contain a Session-Id AVP, *session == NULL on return. |
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2411 * Note that the Session-Id AVP must never be modified after created in a message. |
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2412 * |
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2413 * RETURN VALUE: |
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2414 * 0 : success |
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2415 * !0 : standard error code. |
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2416 */ |
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2417 int fd_msg_sess_get(struct dictionary * dict, struct msg * msg, struct session ** session, int * isnew); |
|
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2418 |
| 0 | 2419 /***************************************/ |
| 2420 /* Manage AVP values */ | |
| 2421 /***************************************/ | |
| 2422 | |
| 2423 /* | |
| 2424 * FUNCTION: fd_msg_avp_setvalue | |
| 2425 * | |
| 2426 * PARAMETERS: | |
| 2427 * avp : Pointer to a valid avp object with a NULL avp_value pointer. The model must be known. | |
| 2428 * value : pointer to an avp_value. The content will be COPIED into the internal storage area. | |
| 2429 * If data type is an octetstring, the data is also copied. | |
| 2430 * If value is a NULL pointer, the previous data is erased and value is unset in the AVP. | |
| 2431 * | |
| 2432 * DESCRIPTION: | |
| 2433 * Initialize the avp_value field of an AVP header. | |
| 2434 * | |
| 2435 * RETURN VALUE: | |
| 2436 * 0 : The avp_value pointer has been set. | |
| 2437 * EINVAL : A parameter is invalid. | |
| 2438 */ | |
| 2439 int fd_msg_avp_setvalue ( struct avp *avp, union avp_value *value ); | |
| 2440 | |
| 2441 /* | |
| 2442 * FUNCTION: fd_msg_avp_value_encode | |
| 2443 * | |
| 2444 * PARAMETERS: | |
| 2445 * avp : Pointer to a valid avp object with a NULL avp_value. The model must be known. | |
| 2446 * data : Pointer to the data that must be encoded as AVP value and stored in the AVP. | |
| 2447 * This is only valid for AVPs of derived type for which type_data_encode callback is set. (ex: Address type) | |
| 2448 * | |
| 2449 * DESCRIPTION: | |
| 2450 * Initialize the avp_value field of an AVP object from formatted data, using the AVP's type "type_data_encode" callback. | |
| 2451 * | |
| 2452 * RETURN VALUE: | |
| 2453 * 0 : The avp_value has been set. | |
| 2454 * EINVAL : A parameter is invalid. | |
| 2455 * ENOTSUP : There is no appropriate callback registered with this AVP's type. | |
| 2456 */ | |
| 2457 int fd_msg_avp_value_encode ( void *data, struct avp *avp ); | |
| 2458 /* | |
| 2459 * FUNCTION: fd_msg_avp_value_interpret | |
| 2460 * | |
| 2461 * PARAMETERS: | |
| 2462 * avp : Pointer to a valid avp object with a non-NULL avp_value value. | |
| 2463 * data : Upon success, formatted interpretation of the AVP value is stored here. | |
| 2464 * | |
| 2465 * DESCRIPTION: | |
| 2466 * Interpret the content of an AVP of Derived type and store the result in data pointer. The structure | |
| 2467 * of the data pointer is dependent on the AVP type. This function calls the "type_data_interpret" callback | |
| 2468 * of the type. | |
| 2469 * | |
| 2470 * RETURN VALUE: | |
| 2471 * 0 : The avp_value has been set. | |
| 2472 * EINVAL : A parameter is invalid. | |
| 2473 * ENOTSUP : There is no appropriate callback registered with this AVP's type. | |
| 2474 */ | |
| 2475 int fd_msg_avp_value_interpret ( struct avp *avp, void *data ); | |
| 2476 | |
| 2477 | |
| 2478 /***************************************/ | |
| 2479 /* Message parsing functions */ | |
| 2480 /***************************************/ | |
| 2481 | |
| 2482 /* | |
| 2483 * FUNCTION: fd_msg_bufferize | |
| 2484 * | |
| 2485 * PARAMETERS: | |
| 2486 * msg : A valid msg object. All AVPs must have a value set. | |
| 2487 * buffer : Upon success, this points to a buffer (malloc'd) containing the message ready for network transmission (or security transformations). | |
| 2488 * The buffer may be freed after use. | |
| 2489 * len : if not NULL, the size of the buffer is written here. In any case, this size is updated in the msg header. | |
| 2490 * | |
| 2491 * DESCRIPTION: | |
| 2492 * Renders a message in memory as a buffer that can be sent over the network to the next peer. | |
| 2493 * | |
| 2494 * RETURN VALUE: | |
| 2495 * 0 : The location has been written. | |
| 2496 * EINVAL : The buffer does not contain a valid Diameter message. | |
| 2497 * ENOMEM : Unable to allocate enough memory to create the buffer object. | |
| 2498 */ | |
|
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2499 int fd_msg_bufferize ( struct msg * msg, uint8_t ** buffer, size_t * len ); |
| 0 | 2500 |
| 2501 /* | |
| 2502 * FUNCTION: fd_msg_parse_buffer | |
| 2503 * | |
| 2504 * PARAMETERS: | |
| 2505 * buffer : Pointer to a buffer containing a message received from the network. | |
| 2506 * buflen : the size in bytes of the buffer. | |
| 2507 * msg : Upon success, this points to a valid msg object. No AVP value is resolved in this object, nor grouped AVP. | |
| 2508 * | |
| 2509 * DESCRIPTION: | |
| 2510 * This function parses a buffer an creates a msg object to represent the structure of the message. | |
| 2511 * Since no dictionary lookup is performed, the values of the AVPs are not interpreted. To interpret the values, | |
| 2512 * the returned message object must be passed to fd_msg_parse_dict function. | |
| 2513 * The buffer pointer is saved inside the message and will be freed when not needed anymore. | |
| 2514 * | |
| 2515 * RETURN VALUE: | |
| 2516 * 0 : The location has been written. | |
| 2517 * ENOMEM : Unable to allocate enough memory to create the msg object. | |
| 2518 * EBADMSG : The buffer does not contain a valid Diameter message (or is truncated). | |
| 2519 * EINVAL : A parameter is invalid. | |
| 2520 */ | |
|
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2521 int fd_msg_parse_buffer ( uint8_t ** buffer, size_t buflen, struct msg ** msg ); |
| 0 | 2522 |
|
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2523 /* Parsing Error Information structure */ |
|
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2524 struct fd_pei { |
|
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2525 char * pei_errcode; /* name of the error code to use */ |
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2526 struct avp * pei_avp; /* pointer to invalid or missing AVP (to be freed) */ |
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2527 char * pei_message; /* Overwrite default message if needed */ |
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2528 int pei_protoerr; /* do we set the 'E' bit in the error message ? */ |
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2529 }; |
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2530 |
| 0 | 2531 /* |
| 2532 * FUNCTION: fd_msg_parse_dict | |
| 2533 * | |
| 2534 * PARAMETERS: | |
| 2535 * object : A msg or AVP object as returned by fd_msg_parse_buffer. | |
| 2536 * dict : the dictionary containing the objects definitions to use for resolving all AVPs. | |
|
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2537 * error_info : If not NULL, will contain the detail about error upon return. May be used to generate an error reply. |
| 0 | 2538 * |
| 2539 * DESCRIPTION: | |
| 2540 * This function looks up for the command and each children AVP definitions in the dictionary. | |
| 2541 * If the dictionary definition is found, avp_model is set and the value of the AVP is interpreted accordingly and: | |
| 2542 * - for grouped AVPs, the children AVP are created and interpreted also. | |
| 2543 * - for numerical AVPs, the value is converted to host byte order and saved in the avp_value field. | |
| 2544 * - for octetstring AVPs, the string is copied into a new buffer and its address is saved in avp_value. | |
| 2545 * If the dictionary definition is not found, avp_model is set to NULL and | |
| 2546 * the content of the AVP is saved as an octetstring in an internal structure. avp_value is NULL. | |
|
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2547 * As a result, after this function has been called, there is no more dependency of the msg object to the message buffer, that is freed. |
| 0 | 2548 * |
| 2549 * RETURN VALUE: | |
| 2550 * 0 : The message has been fully parsed as described. | |
| 2551 * EINVAL : The msg parameter is invalid for this operation. | |
| 2552 * ENOMEM : Unable to allocate enough memory to complete the operation. | |
| 2553 * ENOTSUP : No dictionary definition for the command or one of the mandatory AVP was found. | |
| 2554 */ | |
|
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2555 int fd_msg_parse_dict ( msg_or_avp * object, struct dictionary * dict, struct fd_pei * error_info ); |
|
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2556 |
| 0 | 2557 /* |
| 2558 * FUNCTION: fd_msg_parse_rules | |
| 2559 * | |
| 2560 * PARAMETERS: | |
| 2561 * object : A msg or grouped avp object that must be verified. | |
| 2562 * dict : The dictionary containing the rules definitions. | |
|
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2563 * error_info : If not NULL, the first problem information will be saved here. |
| 0 | 2564 * |
| 2565 * DESCRIPTION: | |
| 2566 * Check that the children of the object do not conflict with the dictionary rules (ABNF compliance). | |
| 2567 * | |
| 2568 * RETURN VALUE: | |
| 2569 * 0 : The message has been fully parsed and complies to the defined rules. | |
| 2570 * EBADMSG : A conflict was detected, or a mandatory AVP is unknown in the dictionary. | |
| 2571 * EINVAL : The msg or avp object is invalid for this operation. | |
| 2572 * ENOMEM : Unable to allocate enough memory to complete the operation. | |
| 2573 */ | |
|
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2574 int fd_msg_parse_rules ( msg_or_avp * object, struct dictionary * dict, struct fd_pei * error_info); |
|
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2575 |
| 0 | 2576 |
| 2577 | |
| 2578 /* | |
| 2579 * FUNCTION: fd_msg_update_length | |
| 2580 * | |
| 2581 * PARAMETERS: | |
| 2582 * object : Pointer to a valid msg or avp. | |
| 2583 * | |
| 2584 * DESCRIPTION: | |
| 2585 * Update the length field of the object passed as parameter. | |
| 2586 * As a side effect, all children objects are also updated. Therefore, all avp_value fields of | |
| 2587 * the children AVPs must be set, or an error will occur. | |
| 2588 * | |
| 2589 * RETURN VALUE: | |
| 2590 * 0 : The size has been recomputed. | |
| 2591 * EINVAL : A parameter is invalid. | |
| 2592 */ | |
| 2593 int fd_msg_update_length ( msg_or_avp * object ); | |
| 2594 | |
| 2595 | |
|
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2596 /*============================================================*/ |
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2597 /* DISPATCH */ |
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2598 /*============================================================*/ |
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2599 |
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2600 /* Dispatch module (passing incoming messages to extensions registered callbacks) |
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|
2601 * is split between the library and the daemon. |
|
e5af94b04946
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6
diff
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|
2602 * |
|
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Added dispatch module and tests
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parents:
6
diff
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|
2603 * The library provides the support for associating dispatch callbacks with |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2604 * dictionary objects. |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2605 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2606 * The daemon is responsible for calling the callbacks for a message when appropriate. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2607 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2608 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2609 * The dispatch module has two main roles: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2610 * - help determine if a message can be handled locally (during the routing step) |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2611 * This decision involves only the application-id of the message. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2612 * - pass the message to the callback(s) that will handle it (during the dispatch step) |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2613 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2614 * The first role is handled by the daemon. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2615 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2616 * About the second, these are the possibilities for registering a dispatch callback: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2617 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2618 * -> For All messages. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2619 * This callback is called for all messages that are handled locally. This should be used only |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2620 * for debug purpose. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2621 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2622 * -> by AVP value (constants only). |
|
e5af94b04946
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parents:
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diff
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|
2623 * This callback will be called when a message is received and contains an AVP with a specified enumerated value. |
|
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|
2624 * |
|
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Added dispatch module and tests
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|
2625 * -> by AVP. |
|
e5af94b04946
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2626 * This callback will be called when the received message contains a certain AVP. |
|
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|
2627 * |
|
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|
2628 * -> by command-code. |
|
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Added dispatch module and tests
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2629 * This callback will be called when the message is a specific command (and 'R' flag). |
|
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6
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|
2630 * |
|
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Added dispatch module and tests
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|
2631 * -> by application. |
|
e5af94b04946
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2632 * This callback will be called when the message has a specific application-id. |
|
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6
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|
2633 * |
|
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6
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|
2634 * ( by vendor: would this be useful? it may be added later) |
|
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|
2635 */ |
|
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|
2636 enum disp_how { |
|
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|
2637 DISP_HOW_ANY = 1, /* Any message. This should be only used for debug. */ |
|
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6
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|
2638 DISP_HOW_APPID, /* Any message with the specified application-id */ |
|
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diff
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|
2639 DISP_HOW_CC, /* Messages of the specified command-code (request or answer). App id may be specified. */ |
|
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Added dispatch module and tests
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|
2640 DISP_HOW_AVP, /* Messages containing a specific AVP. Command-code and App id may be specified. */ |
|
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Added dispatch module and tests
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6
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2641 DISP_HOW_AVP_ENUMVAL /* Messages containing a specific AVP with a specific enumerated value. Command-code and App id may be specified. */ |
|
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|
2642 }; |
|
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|
2643 /* |
|
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6
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|
2644 * Several criteria may be selected at the same time, for example command-code AND application id. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2645 * |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
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|
2646 * If several callbacks are registered for the same object, they are called in the order they were registered. |
|
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Added dispatch module and tests
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|
2647 * The order in which the callbacks are called is: |
|
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6
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|
2648 * DISP_HOW_ANY |
|
e5af94b04946
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6
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2649 * DISP_HOW_AVP_ENUMVAL & DISP_HOW_AVP |
|
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Added dispatch module and tests
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|
2650 * DISP_HOW_CC |
|
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Added dispatch module and tests
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6
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|
2651 * DISP_HOW_APPID |
|
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Added dispatch module and tests
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6
diff
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|
2652 */ |
|
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Added dispatch module and tests
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6
diff
changeset
|
2653 |
|
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Added dispatch module and tests
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6
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|
2654 /* When a callback is registered, a "when" argument is passed in addition to the disp_how value, |
|
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Added dispatch module and tests
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6
diff
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|
2655 * to specify which values the criteria must match. */ |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2656 struct disp_when { |
|
e5af94b04946
Added dispatch module and tests
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6
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|
2657 struct dict_object * app; |
|
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Added dispatch module and tests
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6
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|
2658 struct dict_object * command; |
|
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Added dispatch module and tests
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6
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|
2659 struct dict_object * avp; |
|
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Added dispatch module and tests
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6
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|
2660 struct dict_object * value; |
|
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Added dispatch module and tests
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6
diff
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|
2661 }; |
|
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Added dispatch module and tests
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6
diff
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|
2662 |
|
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Added dispatch module and tests
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6
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|
2663 /* Note that all the dictionary objects should really belong to the same dictionary! |
|
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Added dispatch module and tests
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6
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|
2664 * |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2665 * Here is the details on this "when" argument, depending on the disp_how value. |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2666 * |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
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|
2667 * DISP_HOW_ANY. |
|
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Added dispatch module and tests
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6
diff
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|
2668 * In this case, "when" must be NULL. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2669 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2670 * DISP_HOW_APPID. |
|
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Added dispatch module and tests
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6
diff
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|
2671 * Only the "app_id" field must be set, other fields are ignored. It points to a dictionary object of type DICT_APPLICATION. |
|
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2672 * |
|
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Added dispatch module and tests
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parents:
6
diff
changeset
|
2673 * DISP_HOW_CC. |
|
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Added dispatch module and tests
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6
diff
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|
2674 * The "command" field must be defined and point to a dictionary object of type DICT_COMMAND. |
|
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6
diff
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|
2675 * The "app_id" may be also set. In the case it is set, it restricts the callback to be called only with this command-code and app id. |
|
e5af94b04946
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6
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|
2676 * The other fields are ignored. |
|
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Added dispatch module and tests
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6
diff
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|
2677 * |
|
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6
diff
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|
2678 * DISP_HOW_AVP. |
|
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6
diff
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|
2679 * The "avp" field of the structure must be set and point to a dictionary object of type DICT_AVP. |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2680 * The "app_id" field may be set to restrict the messages matching to a specific app id. |
|
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6
diff
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|
2681 * The "command" field may also be set to a valid DICT_COMMAND object. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2682 * The content of the "value" field is ignored. |
|
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6
diff
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|
2683 * |
|
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6
diff
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|
2684 * DISP_HOW_AVP_ENUMVAL. |
|
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6
diff
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|
2685 * All fields have the same constraints and meaning as in DISP_REG_AVP. In addition, the "value" field must be set |
|
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6
diff
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|
2686 * and points to a valid DICT_ENUMVAL object. |
|
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6
diff
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|
2687 * |
|
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6
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|
2688 * Here is a sumary of the fields: ( M : must be set; m : may be set; 0 : ignored ) |
|
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6
diff
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|
2689 * field: app_id command avp value |
|
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6
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|
2690 * APPID : M 0 0 0 |
|
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|
2691 * CC : m M 0 0 |
|
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6
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|
2692 * AVP : m m M 0 |
|
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|
2693 * ENUMVA: m m M M |
|
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diff
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|
2694 */ |
|
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6
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|
2695 |
|
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6
diff
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|
2696 enum disp_action { |
|
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diff
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|
2697 DISP_ACT_CONT, /* The next handler should be called, unless *msg == NULL. */ |
|
90
2c9444152e4b
Added the dispatch thread code
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88
diff
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|
2698 DISP_ACT_SEND, /* The updated message must be sent. No further callback is called. */ |
|
2c9444152e4b
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diff
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|
2699 DISP_ACT_ERROR /* An error must be created and sent as a reply -- not valid for callbacks, only for fd_msg_dispatch. */ |
|
7
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|
2700 }; |
|
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|
2701 /* The callbacks that are registered have the following prototype: |
|
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|
2702 * int dispatch_callback( struct msg ** msg, struct avp * avp, struct session * session, enum disp_action * action ); |
|
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|
2703 * |
|
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|
2704 * CALLBACK: dispatch_callback |
|
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|
2705 * |
|
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|
2706 * PARAMETERS: |
|
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|
2707 * msg : the received message on function entry. may be updated to answer on return (see description) |
|
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|
2708 * avp : for callbacks registered with DISP_HOW_AVP or DISP_HOW_AVP_ENUMVAL, direct link to the triggering AVP. |
|
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|
2709 * session : if the message contains a Session-Id AVP, the corresponding session object, NULL otherwise. |
|
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
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638
diff
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|
2710 * opaque : An opaque pointer that is registered along the session handler. |
|
7
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2711 * action : upon return, this tells the daemon what to do next. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2712 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2713 * DESCRIPTION: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2714 * Called when a received message matchs the condition for which the callback was registered. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2715 * This callback may do any kind of processing on the message, including: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2716 * - create an answer for a request. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2717 * - proxy a request or message, add / remove the Proxy-Info AVP, then forward the message. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2718 * - update a routing table or start a connection with a new peer, then forward the message. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2719 * - ... |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2720 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2721 * When *action == DISP_ACT_SEND on callback return, the msg pointed by *msg is passed to the routing module for sending. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2722 * When *action == DISP_ACT_CONT, the next registered callback is called. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2723 * When the last callback gives also DISP_ACT_CONT action value, a default handler is called. It's behavior is as follow: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2724 * - if the message is an answer, it is discarded. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2725 * - if the message is a request, it is passed again to the routing stack, and marked as non-local handling. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2726 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2727 * RETURN VALUE: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2728 * 0 : The callback executed successfully and updated *action appropriately. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2729 * !0 : standard errors. In case of error, the message is discarded. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2730 */ |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2731 |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2732 /* This structure represents a handler for a registered callback, allowing its de-registration */ |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2733 struct disp_hdl; |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2734 |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2735 /* |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2736 * FUNCTION: fd_disp_register |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2737 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2738 * PARAMETERS: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2739 * cb : The callback function to register (see dispatch_callback description above). |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2740 * how : How the callback must be registered. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2741 * when : Values that must match, depending on the how argument. |
|
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
2742 * opaque : A pointer that is passed back to the handler. The content is not interpreted by the framework. |
|
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2743 * handle : On success, a handler to the registered callback is stored here if not NULL. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2744 * This handler can be used to unregister the cb. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2745 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2746 * DESCRIPTION: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2747 * Register a new callback to handle messages delivered locally. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2748 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2749 * RETURN VALUE: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2750 * 0 : The callback is registered. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2751 * EINVAL : A parameter is invalid. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2752 * ENOMEM : Not enough memory to complete the operation |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2753 */ |
|
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
2754 int fd_disp_register ( int (*cb)( struct msg **, struct avp *, struct session *, void *, enum disp_action *), |
|
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
2755 enum disp_how how, struct disp_when * when, void * opaque, struct disp_hdl ** handle ); |
|
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2756 |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2757 /* |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2758 * FUNCTION: fd_disp_unregister |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2759 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2760 * PARAMETERS: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2761 * handle : Location of the handle of the callback that must be unregistered. |
|
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
2762 * opaque : If not NULL, the opaque data that was registered is restored here. |
|
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2763 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2764 * DESCRIPTION: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2765 * Removes a callback previously registered by fd_disp_register. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2766 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2767 * RETURN VALUE: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2768 * 0 : The callback is unregistered. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2769 * EINVAL : A parameter is invalid. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2770 */ |
|
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
2771 int fd_disp_unregister ( struct disp_hdl ** handle, void ** opaque ); |
|
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2772 |
|
90
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
88
diff
changeset
|
2773 /* Destroy all handlers */ |
|
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
88
diff
changeset
|
2774 void fd_disp_unregister_all ( void ); |
|
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
88
diff
changeset
|
2775 |
|
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2776 /* |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2777 * FUNCTION: fd_msg_dispatch |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2778 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2779 * PARAMETERS: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2780 * msg : A msg object that have already been fd_msg_parse_dict. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2781 * session : The session corresponding to this object, if any. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2782 * action : Upon return, the action that must be taken on the message |
|
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
2783 * error_code : Upon return with action == DISP_ACT_ERROR, contains the error (such as "DIAMETER_UNABLE_TO_COMPLY") |
|
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2784 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2785 * DESCRIPTION: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2786 * Call all handlers registered for a given message. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2787 * The session must have already been resolved on entry. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2788 * The msg pointed may be updated during this process. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2789 * Upon return, the action parameter points to what must be done next. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2790 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2791 * RETURN VALUE: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2792 * 0 : Success. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2793 * EINVAL : A parameter is invalid. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2794 * (other errors) |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2795 */ |
|
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
2796 int fd_msg_dispatch ( struct msg ** msg, struct session * session, enum disp_action *action, char ** error_code ); |
|
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2797 |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2798 |
| 0 | 2799 |
| 2800 /*============================================================*/ | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2801 /* QUEUES */ |
| 0 | 2802 /*============================================================*/ |
| 2803 | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2804 /* Management of FIFO queues of elements */ |
| 0 | 2805 |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2806 /* A queue is an opaque object */ |
|
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2807 struct fifo; |
| 0 | 2808 |
| 2809 /* | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2810 * FUNCTION: fd_fifo_new |
| 0 | 2811 * |
| 2812 * PARAMETERS: | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2813 * queue : Upon success, a pointer to the new queue is saved here. |
|
767
c47c16436f71
Added a limit on fifo queues to avoid memory exaustion when messages are received faster than handled
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
764
diff
changeset
|
2814 * max : max number of items in the queue. Above this number, adding a new item becomes a |
|
c47c16436f71
Added a limit on fifo queues to avoid memory exaustion when messages are received faster than handled
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
764
diff
changeset
|
2815 * blocking operation. Use 0 to disable this maximum. |
| 0 | 2816 * |
| 2817 * DESCRIPTION: | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2818 * Create a new empty queue. |
| 0 | 2819 * |
| 2820 * RETURN VALUE : | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2821 * 0 : The queue has been initialized successfully. |
| 0 | 2822 * EINVAL : The parameter is invalid. |
| 2823 * ENOMEM : Not enough memory to complete the creation. | |
| 2824 */ | |
|
767
c47c16436f71
Added a limit on fifo queues to avoid memory exaustion when messages are received faster than handled
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
764
diff
changeset
|
2825 int fd_fifo_new ( struct fifo ** queue, int max ); |
| 0 | 2826 |
| 2827 /* | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2828 * FUNCTION: fd_fifo_del |
| 0 | 2829 * |
| 2830 * PARAMETERS: | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2831 * queue : Pointer to an empty queue to delete. |
| 0 | 2832 * |
| 2833 * DESCRIPTION: | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2834 * Destroys a queue. This is only possible if no thread is waiting for an element, |
| 0 | 2835 * and the queue is empty. |
| 2836 * | |
| 2837 * RETURN VALUE: | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2838 * 0 : The queue has been destroyed successfully. |
| 0 | 2839 * EINVAL : The parameter is invalid. |
| 2840 */ | |
|
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2841 int fd_fifo_del ( struct fifo ** queue ); |
| 0 | 2842 |
| 2843 /* | |
|
25
67ca08d5bc48
Completed connection context files
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|
2844 * FUNCTION: fd_fifo_move |
|
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2845 * |
|
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2846 * PARAMETERS: |
|
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2847 * oldq : Location of a FIFO that is to be emptied. |
|
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2848 * newq : A FIFO that will receive the old data. |
|
25
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2849 * loc_update : if non NULL, a place to store the pointer to new FIFO atomically with the move. |
|
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Completed connection context files
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2850 * |
|
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|
2851 * DESCRIPTION: |
|
43
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Added a large part of connection establishment logic, to test
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2852 * Empties a queue and move its content to another one atomically. |
|
25
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2853 * |
|
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2854 * RETURN VALUE: |
|
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2855 * 0 : The queue has been destroyed successfully. |
|
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2856 * EINVAL : A parameter is invalid. |
|
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|
2857 */ |
|
653
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2858 int fd_fifo_move ( struct fifo * oldq, struct fifo * newq, struct fifo ** loc_update ); |
|
25
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2859 |
|
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2860 /* |
|
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2861 * FUNCTION: fd_fifo_length |
| 0 | 2862 * |
| 2863 * PARAMETERS: | |
|
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2864 * queue : The queue from which to retrieve the number of elements. |
|
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2865 * length : Upon success, the current number of elements in the queue is stored here. |
| 0 | 2866 * |
| 2867 * DESCRIPTION: | |
|
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2868 * Retrieve the number of elements in a queue. |
| 0 | 2869 * |
| 2870 * RETURN VALUE: | |
| 2871 * 0 : The length of the queue has been written. | |
| 2872 * EINVAL : A parameter is invalid. | |
| 2873 */ | |
|
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2874 int fd_fifo_length ( struct fifo * queue, int * length ); |
|
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2875 int fd_fifo_length_noerr ( struct fifo * queue ); /* no error checking version */ |
| 0 | 2876 |
| 2877 /* | |
|
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2878 * FUNCTION: fd_fifo_setthrhd |
| 0 | 2879 * |
| 2880 * PARAMETERS: | |
| 2881 * queue : The queue for which the thresholds are being set. | |
| 2882 * data : An opaque pointer that is passed to h_cb and l_cb callbacks. | |
| 2883 * high : The high-level threshold. If the number of elements in the queue increase to this value, h_cb is called. | |
| 2884 * h_cb : if not NULL, a callback to call when the queue lengh is bigger than "high". | |
| 2885 * low : The low-level threshold. Must be < high. | |
| 2886 * l_cb : If the number of elements decrease to low, this callback is called. | |
| 2887 * | |
| 2888 * DESCRIPTION: | |
| 2889 * This function allows to adjust the number of producer / consumer threads of a queue. | |
|
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2890 * If the consumer are slower than the producers, the number of elements in the queue increase. |
| 0 | 2891 * By setting a "high" value, we allow a callback to be called when this number is too high. |
| 2892 * The typical use would be to create an additional consumer thread in this callback. | |
| 2893 * If the queue continues to grow, the callback will be called again when the length is 2 * high, then 3*high, ... N * high | |
|
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2894 * (the callback itself should implement a limit on the number of consumers that can be created) |
| 0 | 2895 * When the queue starts to decrease, and the number of elements go under ((N - 1) * high + low, the l_cb callback is called |
|
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2896 * and would typially stop one of the consumer threads. If the queue continues to reduce, l_cb is again called at (N-2)*high + low, |
| 0 | 2897 * and so on. |
| 2898 * | |
| 2899 * Since there is no destructor for the data pointer, if cleanup operations are required, they should be performed in | |
| 2900 * l_cb when the length of the queue is becoming < low. | |
| 2901 * | |
|
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2902 * Note that the callbacks are called synchronously, during fd_fifo_post or fd_fifo_get. Their operation should be quick. |
| 0 | 2903 * |
| 2904 * RETURN VALUE: | |
| 2905 * 0 : The thresholds have been set | |
| 2906 * EINVAL : A parameter is invalid. | |
| 2907 */ | |
|
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2908 int fd_fifo_setthrhd ( struct fifo * queue, void * data, uint16_t high, void (*h_cb)(struct fifo *, void **), uint16_t low, void (*l_cb)(struct fifo *, void **) ); |
| 0 | 2909 |
| 2910 /* | |
|
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2911 * FUNCTION: fd_fifo_post |
| 0 | 2912 * |
| 2913 * PARAMETERS: | |
|
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2914 * queue : The queue in which the element must be posted. |
|
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2915 * item : The element that is put in the queue. |
| 0 | 2916 * |
| 2917 * DESCRIPTION: | |
|
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2918 * An element is added in a queue. Elements are retrieved from the queue in FIFO order |
|
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2919 * with the fd_fifo_get, fd_fifo_tryget, or fd_fifo_timedget functions. |
| 0 | 2920 * |
| 2921 * RETURN VALUE: | |
|
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2922 * 0 : The element is queued. |
| 0 | 2923 * EINVAL : A parameter is invalid. |
| 2924 * ENOMEM : Not enough memory to complete the operation. | |
| 2925 */ | |
|
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2926 int fd_fifo_post_int ( struct fifo * queue, void ** item ); |
|
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2927 #define fd_fifo_post(queue, item) \ |
|
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2928 fd_fifo_post_int((queue), (void *)(item)) |
| 0 | 2929 |
| 2930 /* | |
|
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2931 * FUNCTION: fd_fifo_get |
| 0 | 2932 * |
| 2933 * PARAMETERS: | |
|
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2934 * queue : The queue from which the first element must be retrieved. |
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2935 * item : On return, the first element of the queue is stored here. |
| 0 | 2936 * |
| 2937 * DESCRIPTION: | |
|
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2938 * This function retrieves the first element from a queue. If the queue is empty, the function will block the |
|
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2939 * thread until a new element is posted to the queue, or until the thread is canceled (in which case the |
| 0 | 2940 * function does not return). |
| 2941 * | |
| 2942 * RETURN VALUE: | |
|
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2943 * 0 : A new element has been retrieved. |
| 0 | 2944 * EINVAL : A parameter is invalid. |
| 2945 */ | |
|
620
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|
2946 int fd_fifo_get_int ( struct fifo * queue, void ** item ); |
|
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|
2947 #define fd_fifo_get(queue, item) \ |
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2948 fd_fifo_get_int((queue), (void *)(item)) |
| 0 | 2949 |
| 2950 /* | |
|
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2951 * FUNCTION: fd_fifo_tryget |
| 0 | 2952 * |
| 2953 * PARAMETERS: | |
|
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2954 * queue : The queue from which the element must be retrieved. |
|
124
cc42d8607114
Completed cleanups of queues when the daemon is stopping
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|
2955 * item : On return, the first element of the queue is stored here. |
| 0 | 2956 * |
| 2957 * DESCRIPTION: | |
|
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|
2958 * This function is similar to fd_fifo_get, except that it will not block if |
| 0 | 2959 * the queue is empty, but return EWOULDBLOCK instead. |
| 2960 * | |
| 2961 * RETURN VALUE: | |
|
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2962 * 0 : A new element has been retrieved. |
| 0 | 2963 * EINVAL : A parameter is invalid. |
| 2964 * EWOULDBLOCK : The queue was empty. | |
| 2965 */ | |
|
620
bc7328e600f0
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|
2966 int fd_fifo_tryget_int ( struct fifo * queue, void ** item ); |
|
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2967 #define fd_fifo_tryget(queue, item) \ |
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2968 fd_fifo_tryget_int((queue), (void *)(item)) |
| 0 | 2969 |
| 2970 /* | |
|
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2971 * FUNCTION: fd_fifo_timedget |
| 0 | 2972 * |
| 2973 * PARAMETERS: | |
|
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2974 * queue : The queue from which the element must be retrieved. |
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2975 * item : On return, the element is stored here. |
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2976 * abstime : the absolute time until which we allow waiting for an item. |
| 0 | 2977 * |
| 2978 * DESCRIPTION: | |
|
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2979 * This function is similar to fd_fifo_get, except that it will block if the queue is empty |
| 0 | 2980 * only until the absolute time abstime (see pthread_cond_timedwait for + info). |
| 2981 * If the queue is still empty when the time expires, the function returns ETIMEDOUT | |
| 2982 * | |
| 2983 * RETURN VALUE: | |
|
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2984 * 0 : A new item has been retrieved. |
| 0 | 2985 * EINVAL : A parameter is invalid. |
|
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2986 * ETIMEDOUT : The time out has passed and no item has been received. |
| 0 | 2987 */ |
|
620
bc7328e600f0
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|
2988 int fd_fifo_timedget_int ( struct fifo * queue, void ** item, const struct timespec *abstime ); |
|
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|
2989 #define fd_fifo_timedget(queue, item, abstime) \ |
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2990 fd_fifo_timedget_int((queue), (void *)(item), (abstime)) |
| 0 | 2991 |
|
10
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2992 /* Dump a fifo list and optionally its inner elements -- beware of deadlocks! */ |
|
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|
2993 void fd_fifo_dump(int level, char * name, struct fifo * queue, void (*dump_item)(int level, void * item)); |
|
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2994 |
|
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2995 #endif /* _LIBFDPROTO_H */ |