Mercurial > hg > freeDiameter
annotate include/freeDiameter/libfdproto.h @ 736:9af507b1bd23
Move error messages to INFO level also
| author | Sebastien Decugis <sdecugis@nict.go.jp> |
|---|---|
| date | Wed, 02 Mar 2011 14:51:22 +0900 |
| parents | da8bfb070900 |
| children | d666051658bd |
| rev | line source |
|---|---|
| 0 | 1 /********************************************************************************************************* |
| 2 * Software License Agreement (BSD License) * | |
| 3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> * | |
| 4 * * | |
|
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5 * Copyright (c) 2011, 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> | |
| 76 | |
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77 #ifdef DEBUG |
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78 #include <libgen.h> /* for basename if --dbg_file is specified */ |
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79 #endif /* DEBUG */ |
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80 |
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81 /*============================================================*/ |
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82 /* INIT */ |
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83 /*============================================================*/ |
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84 |
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85 /* This function must be called first, before any call to another library function */ |
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86 int fd_libproto_init(void); /* note if you are using libfdcore, it handles this already */ |
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87 |
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88 /* Call this one when the application terminates, to destroy internal threads */ |
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89 void fd_libproto_fini(void); |
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90 |
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91 |
| 0 | 92 /*============================================================*/ |
| 93 /* DEBUG */ | |
| 94 /*============================================================*/ | |
| 95 | |
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96 |
| 0 | 97 /* |
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98 * FUNCTION: fd_log_debug_fstr |
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99 * MACRO: fd_log_debug |
| 0 | 100 * |
| 101 * PARAMETERS: | |
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102 * fstr : Stream where the text will be sent (default: stdout) |
| 0 | 103 * format : Same format string as in the printf function |
| 104 * ... : Same list as printf | |
| 105 * | |
| 106 * DESCRIPTION: | |
| 107 * Log internal information for use of developpers only. | |
| 108 * The format and arguments may contain UTF-8 encoded data. The | |
| 109 * output medium (file or console) is expected to support this encoding. | |
| 110 * | |
| 111 * This function assumes that a global mutex called "fd_log_lock" exists | |
| 112 * in the address space of the current process. | |
| 113 * | |
| 114 * RETURN VALUE: | |
| 115 * None. | |
| 116 */ | |
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117 void fd_log_debug_fstr ( FILE * fstr, const char * format, ... ); |
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118 #define fd_log_debug(format,args...) fd_log_debug_fstr(NULL, format, ## args) |
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119 |
| 0 | 120 extern pthread_mutex_t fd_log_lock; |
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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 |
| 158 | |
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159 /*============================================================*/ |
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160 /* DEBUG MACROS */ |
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161 /*============================================================*/ |
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162 |
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163 #ifndef ASSERT |
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164 #define ASSERT(x) assert(x) |
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165 #endif /* ASSERT */ |
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166 |
| 0 | 167 /* levels definitions */ |
| 168 #define NONE 0 /* Display no debug message */ | |
| 169 #define INFO 1 /* Display errors only */ | |
| 170 #define FULL 2 /* Display additional information to follow code execution */ | |
| 171 #define ANNOYING 4 /* Very verbose, for example in loops */ | |
| 172 #define FCTS 6 /* Display entry parameters of most functions */ | |
| 173 #define CALL 9 /* Display calls to most functions (with CHECK macros) */ | |
| 174 | |
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175 /* Increment the debug level for a file at compilation time by defining -DTRACE_LEVEL=FULL for example. */ |
| 0 | 176 #ifndef TRACE_LEVEL |
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177 #define TRACE_LEVEL NONE |
| 0 | 178 #endif /* TRACE_LEVEL */ |
| 179 | |
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180 /* The level of the file being compiled. */ |
| 0 | 181 static int local_debug_level = TRACE_LEVEL; |
| 182 | |
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183 /* A global level, changed by configuration or cmd line for example. Default is INFO (in libfdproto/log.c). */ |
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184 extern int fd_g_debug_lvl; |
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185 |
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186 /* Some portability code to get nice function name in __PRETTY_FUNCTION__ */ |
| 0 | 187 #if __STDC_VERSION__ < 199901L |
| 188 # if __GNUC__ >= 2 | |
| 189 # define __func__ __FUNCTION__ | |
| 190 # else /* __GNUC__ >= 2 */ | |
| 191 # define __func__ "<unknown>" | |
| 192 # endif /* __GNUC__ >= 2 */ | |
| 193 #endif /* __STDC_VERSION__ < 199901L */ | |
| 194 #ifndef __PRETTY_FUNCTION__ | |
| 195 #define __PRETTY_FUNCTION__ __func__ | |
| 196 #endif /* __PRETTY_FUNCTION__ */ | |
| 197 | |
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198 /* A version of __FILE__ without the full path */ |
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199 static char * file_bname = NULL; |
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200 #define __STRIPPED_FILE__ (file_bname ?: (file_bname = basename((char *)__FILE__))) |
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201 |
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202 |
| 0 | 203 /* Boolean for tracing at a certain level */ |
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204 #ifdef DEBUG |
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205 #define TRACE_BOOL(_level_) ( ((_level_) <= local_debug_level + fd_g_debug_lvl) \ |
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206 || (fd_debug_one_function && !strcmp(fd_debug_one_function, __PRETTY_FUNCTION__)) \ |
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207 || (fd_debug_one_file && !strcmp(fd_debug_one_file, __STRIPPED_FILE__) ) ) |
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208 #else /* DEBUG */ |
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209 #define TRACE_BOOL(_level_) ((_level_) <= local_debug_level + fd_g_debug_lvl) |
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210 #endif /* DEBUG */ |
| 0 | 211 |
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212 |
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213 /************* |
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214 The general debug macro, each call results in two lines of debug messages (change the macro for more compact output) |
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215 *************/ |
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216 #ifdef DEBUG |
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217 /* In DEBUG mode, we add (a lot of) meta-information along each trace. This makes multi-threading problems easier to debug. */ |
| 0 | 218 #define TRACE_DEBUG(level,format,args... ) { \ |
| 219 if ( TRACE_BOOL(level) ) { \ | |
| 220 char __buf[25]; \ | |
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221 const char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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222 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
| 0 | 223 "\t%s|%*s" format "\n", \ |
| 206 | 224 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
| 0 | 225 (level < FULL)?"@":" ",level, "", ## args); \ |
| 226 } \ | |
| 227 } | |
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228 #else /* DEBUG */ |
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229 /* Do not print thread, function, ... only the message itself in this case, unless the debug level is set > FULL. */ |
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230 #define TRACE_DEBUG(level,format,args... ) { \ |
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231 if ( TRACE_BOOL(level) ) { \ |
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232 if (fd_g_debug_lvl > FULL) { \ |
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233 char __buf[25]; \ |
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234 const char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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235 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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236 "\t%s|%*s" format "\n", \ |
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237 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
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238 (level < FULL)?"@":" ",level, "", ## args); \ |
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239 } else { \ |
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240 fd_log_debug(format "\n", ## args); \ |
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241 } \ |
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242 } \ |
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243 } |
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244 #endif /* DEBUG */ |
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246 /************* |
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247 Derivatives from this macro |
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248 ************/ |
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249 /* Helper for function entry -- for very detailed trace of the execution */ |
| 0 | 250 #define TRACE_ENTRY(_format,_args... ) \ |
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251 TRACE_DEBUG(FCTS, "[enter] %s(" _format ") {" #_args "}", __PRETTY_FUNCTION__, ##_args ); |
| 0 | 252 |
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253 /* Helper for debugging by adding traces -- for debuging a specific location of the code */ |
| 0 | 254 #define TRACE_HERE() \ |
|
183
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255 TRACE_DEBUG(NONE, " -- debug checkpoint %d -- ", fd_breakhere()); |
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256 int fd_breakhere(void); |
| 0 | 257 |
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258 /* Helper for tracing the CHECK_* macros bellow -- very very verbose code execution! */ |
| 0 | 259 #define TRACE_DEBUG_ALL( str ) \ |
| 260 TRACE_DEBUG(CALL, str ); | |
| 261 | |
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262 /* For development only, to keep track of TODO locations in the code */ |
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263 #ifndef ERRORS_ON_TODO |
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264 #define TODO( _msg, _args... ) \ |
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265 TRACE_DEBUG(NONE, "TODO: " _msg , ##_args); |
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266 #else /* ERRORS_ON_TODO */ |
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267 #define TODO( _msg, _args... ) \ |
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268 "TODO" = _msg ## _args; /* just a stupid compilation error to spot the todo */ |
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269 #endif /* ERRORS_ON_TODO */ |
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270 |
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271 /* Trace a binary buffer content */ |
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272 #define TRACE_DEBUG_BUFFER(level, prefix, buf, bufsz, suffix ) { \ |
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273 if ( TRACE_BOOL(level) ) { \ |
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274 char __ts[25]; \ |
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275 int __i; \ |
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276 size_t __sz = (size_t)(bufsz); \ |
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277 uint8_t * __buf = (uint8_t *)(buf); \ |
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278 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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279 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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280 "\t%s|%*s" prefix , \ |
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281 __thn, fd_log_time(NULL, __ts, sizeof(__ts)), __PRETTY_FUNCTION__, __FILE__, __LINE__, \ |
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282 (level < FULL)?"@":" ",level, ""); \ |
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283 for (__i = 0; __i < __sz; __i++) { \ |
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284 fd_log_debug("%02.2hhx", __buf[__i]); \ |
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285 } \ |
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286 fd_log_debug(suffix "\n"); \ |
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287 } \ |
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288 } |
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289 |
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290 /* Some aliases to socket addresses structures */ |
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291 #define sSS struct sockaddr_storage |
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292 #define sSA struct sockaddr |
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293 #define sSA4 struct sockaddr_in |
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294 #define sSA6 struct sockaddr_in6 |
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295 |
|
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296 /* The sockaddr length of a sSS structure */ |
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297 #define sSAlen( _sa_ ) \ |
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298 ( (socklen_t) ( (((sSA *)_sa_)->sa_family == AF_INET) ? (sizeof(sSA4)) : \ |
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299 ((((sSA *)_sa_)->sa_family == AF_INET6) ? (sizeof(sSA6)) : \ |
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300 0 ) ) ) |
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301 |
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302 /* Dump one sockaddr Node information */ |
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303 #define sSA_DUMP_NODE( sa, flag ) { \ |
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304 sSA * __sa = (sSA *)(sa); \ |
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305 char __addrbuf[INET6_ADDRSTRLEN]; \ |
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306 if (__sa) { \ |
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307 int __rc = getnameinfo(__sa, \ |
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308 sSAlen(__sa), \ |
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309 __addrbuf, \ |
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310 sizeof(__addrbuf), \ |
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311 NULL, \ |
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312 0, \ |
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313 flag); \ |
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314 if (__rc) \ |
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315 fd_log_debug("%s", (char *)gai_strerror(__rc)); \ |
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316 else \ |
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317 fd_log_debug("%s", &__addrbuf[0]); \ |
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318 } else { \ |
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319 fd_log_debug("(NULL / ANY)"); \ |
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320 } \ |
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321 } |
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322 /* Same but with the port (service) also */ |
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323 #define sSA_DUMP_NODE_SERV( sa, flag ) { \ |
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324 sSA * __sa = (sSA *)(sa); \ |
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325 char __addrbuf[INET6_ADDRSTRLEN]; \ |
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326 char __servbuf[32]; \ |
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327 if (__sa) { \ |
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328 int __rc = getnameinfo(__sa, \ |
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329 sSAlen(__sa), \ |
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330 __addrbuf, \ |
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331 sizeof(__addrbuf), \ |
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332 __servbuf, \ |
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333 sizeof(__servbuf), \ |
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334 flag); \ |
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335 if (__rc) \ |
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336 fd_log_debug("%s", (char *)gai_strerror(__rc)); \ |
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337 else \ |
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338 fd_log_debug("[%s]:%s", &__addrbuf[0],&__servbuf[0]); \ |
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339 } else { \ |
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340 fd_log_debug("(NULL / ANY)"); \ |
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341 } \ |
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342 } |
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343 |
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344 /* Inside a debug trace */ |
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345 #define TRACE_DEBUG_sSA(level, prefix, sa, flags, suffix ) { \ |
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346 if ( TRACE_BOOL(level) ) { \ |
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347 char __buf[25]; \ |
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348 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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349 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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350 "\t%s|%*s" prefix , \ |
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351 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
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352 (level < FULL)?"@":" ",level, ""); \ |
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353 sSA_DUMP_NODE_SERV( sa, flags ); \ |
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354 fd_log_debug(suffix "\n"); \ |
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355 } \ |
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356 } |
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357 |
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358 /* Report an error */ |
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359 #define TRACE_DEBUG_ERROR(format,args... ) \ |
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360 TRACE_DEBUG(INFO, format, ##args) |
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361 |
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362 /****************** |
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363 Optimized code: remove all debugging code |
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364 **/ |
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365 #ifdef STRIP_DEBUG_CODE |
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366 #undef TRACE_DEBUG |
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367 #undef TRACE_BOOL |
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368 #undef TRACE_DEBUG_sSA |
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369 #undef TRACE_DEBUG_BUFFER |
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370 #undef TRACE_DEBUG_ERROR |
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371 #define TRACE_DEBUG(level,format,args... ) |
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372 #define TRACE_BOOL(_level_) (0) |
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373 #define TRACE_DEBUG_BUFFER(level, prefix, buf, bufsz, suffix ) |
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374 #define TRACE_DEBUG_sSA(level, prefix, sa, flags, suffix ) |
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375 #define TRACE_DEBUG_ERROR(format,args... ) { \ |
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376 fd_log_debug(format "\n", ## args); \ |
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377 } |
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378 #endif /* STRIP_DEBUG_CODE */ |
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379 |
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380 |
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381 /*============================================================*/ |
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382 /* ERROR CHECKING MACRO */ |
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383 /*============================================================*/ |
| 0 | 384 |
| 385 /* Macros to check a return value and branch out in case of error. | |
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386 * These macro should be used only when errors are improbable, not for expected errors. |
| 0 | 387 */ |
| 388 | |
| 389 /* Check the return value of a system function and execute fallback in case of error */ | |
| 390 #define CHECK_SYS_DO( __call__, __fallback__ ) { \ | |
| 391 int __ret__; \ | |
| 392 TRACE_DEBUG_ALL( "Check SYS: " #__call__ ); \ | |
| 393 __ret__ = (__call__); \ | |
| 394 if (__ret__ < 0) { \ | |
| 395 int __err__ = errno; /* We may handle EINTR here */ \ | |
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396 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "' :\t%s", strerror(__err__));\ |
| 0 | 397 __fallback__; \ |
| 398 } \ | |
| 399 } | |
| 400 /* Check the return value of a system function, return error code on error */ | |
| 401 #define CHECK_SYS( __call__ ) { \ | |
| 402 int __ret__; \ | |
| 403 TRACE_DEBUG_ALL( "Check SYS: " #__call__ ); \ | |
| 404 __ret__ = (__call__); \ | |
| 405 if (__ret__ < 0) { \ | |
| 406 int __err__ = errno; /* We may handle EINTR here */ \ | |
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407 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "' :\t%s", strerror(__err__));\ |
| 0 | 408 return __err__; \ |
| 409 } \ | |
| 410 } | |
| 411 | |
| 412 /* Check the return value of a POSIX function and execute fallback in case of error or special value */ | |
| 413 #define CHECK_POSIX_DO2( __call__, __speval__, __fallback1__, __fallback2__ ) { \ | |
| 414 int __ret__; \ | |
| 415 TRACE_DEBUG_ALL( "Check POSIX: " #__call__ ); \ | |
| 416 __ret__ = (__call__); \ | |
| 417 if (__ret__ != 0) { \ | |
| 418 if (__ret__ == (__speval__)) { \ | |
| 419 __fallback1__; \ | |
| 420 } else { \ | |
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421 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__ret__)); \ |
| 0 | 422 __fallback2__; \ |
| 423 } \ | |
| 424 } \ | |
| 425 } | |
| 426 | |
| 427 /* Check the return value of a POSIX function and execute fallback in case of error */ | |
| 428 #define CHECK_POSIX_DO( __call__, __fallback__ ) \ | |
| 429 CHECK_POSIX_DO2( (__call__), 0, , __fallback__ ); | |
| 430 | |
| 431 /* Check the return value of a POSIX function and return it if error */ | |
| 432 #define CHECK_POSIX( __call__ ) { \ | |
| 433 int __v__; \ | |
| 434 CHECK_POSIX_DO( __v__ = (__call__), return __v__ ); \ | |
| 435 } | |
| 436 | |
| 437 /* Check that a memory allocator did not return NULL, otherwise log an error and execute fallback */ | |
| 438 #define CHECK_MALLOC_DO( __call__, __fallback__ ) { \ | |
| 439 void * __ret__; \ | |
| 440 TRACE_DEBUG_ALL( "Check MALLOC: " #__call__ ); \ | |
| 441 __ret__ = (void *)( __call__ ); \ | |
| 442 if (__ret__ == NULL) { \ | |
| 443 int __err__ = errno; \ | |
|
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444 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__err__)); \ |
| 0 | 445 __fallback__; \ |
| 446 } \ | |
| 447 } | |
| 448 | |
| 449 /* Check that a memory allocator did not return NULL, otherwise return ENOMEM */ | |
| 450 #define CHECK_MALLOC( __call__ ) \ | |
| 451 CHECK_MALLOC_DO( __call__, return ENOMEM ); | |
| 452 | |
| 453 | |
| 454 /* Check parameters at function entry, execute fallback on error */ | |
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455 #define CHECK_PARAMS_DO( __bool__, __fallback__ ) \ |
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456 TRACE_DEBUG_ALL( "Check PARAMS: " #__bool__ ); \ |
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457 if ( ! (__bool__) ) { \ |
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458 TRACE_DEBUG_ERROR("Warning: Invalid parameter received in '" #__bool__ "'"); \ |
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459 __fallback__; \ |
| 0 | 460 } |
| 461 /* Check parameters at function entry, return EINVAL if the boolean is false (similar to assert) */ | |
| 462 #define CHECK_PARAMS( __bool__ ) \ | |
| 463 CHECK_PARAMS_DO( __bool__, return EINVAL ); | |
| 464 | |
| 465 /* Check the return value of an internal function, log and propagate */ | |
| 466 #define CHECK_FCT_DO( __call__, __fallback__ ) { \ | |
| 467 int __ret__; \ | |
| 468 TRACE_DEBUG_ALL( "Check FCT: " #__call__ ); \ | |
| 469 __ret__ = (__call__); \ | |
| 470 if (__ret__ != 0) { \ | |
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471 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__ret__)); \ |
| 0 | 472 __fallback__; \ |
| 473 } \ | |
| 474 } | |
| 475 /* Check the return value of a function call, return any error code */ | |
| 476 #define CHECK_FCT( __call__ ) { \ | |
| 477 int __v__; \ | |
| 478 CHECK_FCT_DO( __v__ = (__call__), return __v__ ); \ | |
| 479 } | |
| 480 | |
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481 |
|
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482 |
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483 /*============================================================*/ |
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484 /* OTHER MACROS */ |
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485 /*============================================================*/ |
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486 |
|
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487 |
|
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488 /* helper macros (pre-processor hacks to allow macro arguments) */ |
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489 #define __tostr( arg ) #arg |
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490 #define _stringize( arg ) __tostr( arg ) |
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491 #define __agr( arg1, arg2 ) arg1 ## arg2 |
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492 #define _aggregate( arg1, arg2 ) __agr( arg1, arg2 ) |
| 0 | 493 |
| 494 | |
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495 /* A l4 protocol name (TCP / SCTP) */ |
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496 #ifdef DISABLE_SCTP |
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497 #define IPPROTO_NAME( _proto ) \ |
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498 (((_proto) == IPPROTO_TCP) ? "TCP" : \ |
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499 "Unknown") |
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500 #else /* DISABLE_SCTP */ |
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501 #define IPPROTO_NAME( _proto ) \ |
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502 ( ((_proto) == IPPROTO_TCP) ? "TCP" : \ |
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503 (((_proto) == IPPROTO_SCTP) ? "SCTP" : \ |
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504 "Unknown")) |
|
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505 #endif /* DISABLE_SCTP */ |
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506 |
| 0 | 507 /* Define the value of IP loopback address */ |
| 508 #ifndef INADDR_LOOPBACK | |
| 509 #define INADDR_LOOPBACK inet_addr("127.0.0.1") | |
| 510 #endif /* INADDR_LOOPBACK */ | |
| 511 | |
|
512
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512 #ifndef INADDR_BROADCAST |
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513 #define INADDR_BROADCAST ((in_addr_t) 0xffffffff) |
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514 #endif /* INADDR_BROADCAST */ |
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515 |
|
134
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516 /* An IP equivalent to IN6_IS_ADDR_LOOPBACK */ |
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517 #ifndef IN_IS_ADDR_LOOPBACK |
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518 #define IN_IS_ADDR_LOOPBACK(a) \ |
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519 ((((long int) (a)->s_addr) & ntohl(0xff000000)) == ntohl(0x7f000000)) |
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520 #endif /* IN_IS_ADDR_LOOPBACK */ |
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521 |
|
135
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522 /* An IP equivalent to IN6_IS_ADDR_UNSPECIFIED */ |
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523 #ifndef IN_IS_ADDR_UNSPECIFIED |
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524 #define IN_IS_ADDR_UNSPECIFIED(a) \ |
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525 (((long int) (a)->s_addr) == 0x00000000) |
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526 #endif /* IN_IS_ADDR_UNSPECIFIED */ |
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527 |
| 0 | 528 /* create a V4MAPPED address */ |
| 529 #define IN6_ADDR_V4MAP( a6, a4 ) { \ | |
| 530 ((uint32_t *)(a6))[0] = 0; \ | |
| 531 ((uint32_t *)(a6))[1] = 0; \ | |
| 532 ((uint32_t *)(a6))[2] = htonl(0xffff); \ | |
| 533 ((uint32_t *)(a6))[3] = (uint32_t)(a4); \ | |
| 534 } | |
| 535 | |
| 536 /* Retrieve a v4 value from V4MAPPED address ( takes a s6_addr as param) */ | |
| 537 #define IN6_ADDR_V4UNMAP( a6 ) \ | |
| 538 (((in_addr_t *)(a6))[3]) | |
| 539 | |
| 540 | |
| 541 /* We provide macros to convert 64 bit values to and from network byte-order, on systems where it is not already provided. */ | |
|
226
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542 #ifndef HAVE_NTOHLL /* Defined by the cmake step, if the ntohll symbol is defined on the system */ |
| 0 | 543 # if HOST_BIG_ENDIAN |
| 544 /* In big-endian systems, we don't have to change the values, since the order is the same as network */ | |
| 545 # define ntohll(x) (x) | |
| 546 # define htonll(x) (x) | |
| 547 # else /* HOST_BIG_ENDIAN */ | |
| 548 /* For these systems, we must reverse the bytes. Use ntohl and htonl on sub-32 blocs, and inverse these blocs. */ | |
| 549 # define ntohll(x) (typeof (x))( (((uint64_t)ntohl( (uint32_t)(x))) << 32 ) | ((uint64_t) ntohl( ((uint64_t)(x)) >> 32 ))) | |
| 550 # define htonll(x) (typeof (x))( (((uint64_t)htonl( (uint32_t)(x))) << 32 ) | ((uint64_t) htonl( ((uint64_t)(x)) >> 32 ))) | |
| 551 # endif /* HOST_BIG_ENDIAN */ | |
| 552 #endif /* HAVE_NTOHLL */ | |
| 553 | |
|
3
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554 /* This macro will give the next multiple of 4 for an integer (used for padding sizes of AVP). */ |
| 0 | 555 #define PAD4(_x) ((_x) + ( (4 - (_x)) & 3 ) ) |
| 556 | |
|
226
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557 /* Useful to display any value as (safe) ASCII (will garbage UTF-8 output...) */ |
| 0 | 558 #define ASCII(_c) ( ((_c < 32) || (_c > 127)) ? ( _c ? '?' : ' ' ) : _c ) |
| 559 | |
| 560 /* Compare timespec structures */ | |
| 561 #define TS_IS_INFERIOR( ts1, ts2 ) \ | |
| 562 ( ((ts1)->tv_sec < (ts2)->tv_sec ) \ | |
|
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563 || (((ts1)->tv_sec == (ts2)->tv_sec ) && ((ts1)->tv_nsec < (ts2)->tv_nsec) )) |
| 0 | 564 |
|
542
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565 /* This gives a good size for buffered reads */ |
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566 #ifndef BUFSIZ |
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567 #define BUFSIZ 96 |
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568 #endif /* BUFSIZ */ |
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569 |
|
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570 /* This gives the length of a const string */ |
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571 #define CONSTSTRLEN( str ) (sizeof(str) - 1) |
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572 |
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573 |
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574 /*============================================================*/ |
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575 /* BINARY STRINGS */ |
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576 /*============================================================*/ |
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577 |
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578 /* Compute a hash value of a binary string. |
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579 The hash must remain local to this machine, there is no guarantee that same input |
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580 will give same output on a different system (endianness) */ |
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581 uint32_t fd_os_hash ( uint8_t * string, size_t len ); |
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582 |
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583 /* This type used for binary strings that contain no \0 except as their last character. |
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584 It means some string operations can be used on it. */ |
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585 typedef uint8_t * os0_t; |
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586 |
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587 /* Same as strdup but for os0_t strings */ |
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588 os0_t os0dup_int(os0_t s, size_t l); |
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589 #define os0dup( _s, _l) (void *)os0dup_int((os0_t)(_s), _l) |
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590 |
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591 /* Check that an octet string value can be used as os0_t */ |
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592 static __inline__ int fd_os_is_valid_os0(uint8_t * os, size_t oslen) { |
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593 /* The only situation where it is not valid is when it contains a \0 inside the octet string */ |
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594 return (memchr(os, '\0', oslen) == NULL); |
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595 } |
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596 |
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597 /* The following type denotes a verified DiameterIdentity value (that contains only pure letters, digits, hyphen, dot) */ |
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598 typedef char * DiamId_t; |
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599 |
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600 /* Maximum length of a hostname we accept */ |
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601 #ifndef HOST_NAME_MAX |
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602 #define HOST_NAME_MAX 512 |
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603 #endif /* HOST_NAME_MAX */ |
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604 |
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605 /* Check if a binary string contains a valid Diameter Identity value. |
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606 rfc3588 states explicitely that such a Diameter Identity consists only of ASCII characters. */ |
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607 int fd_os_is_valid_DiameterIdentity(uint8_t * os, size_t ossz); |
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608 |
|
717
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609 /* The following function validates a string as a Diameter Identity or applies the IDNA transformation on it |
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610 if *inoutsz is != 0 on entry, *id may not be \0-terminated. |
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611 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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612 */ |
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613 int fd_os_validate_DiameterIdentity(char ** id, size_t * inoutsz, int memory); |
|
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614 |
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615 /* Create an order relationship for binary strings (not needed to be \0 terminated). |
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616 It does NOT mimic strings relationships so that it is more efficient. It is case sensitive. |
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617 (the strings are actually first ordered by their lengh, then by their bytes contents) |
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618 returns: -1 if os1 < os2; +1 if os1 > os2; 0 if they are equal */ |
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619 int fd_os_cmp_int(os0_t os1, size_t os1sz, os0_t os2, size_t os2sz); |
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620 #define fd_os_cmp(_o1, _l1, _o2, _l2) fd_os_cmp_int((os0_t)(_o1), _l1, (os0_t)(_o2), _l2) |
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621 |
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622 /* A roughly case-insensitive variant, which actually only compares ASCII chars (0-127) in a case-insentitive maneer |
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623 -- this should be OK with (old) DNS names. Not sure how it works with IDN... |
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624 -- it also clearly does not support locales where a lowercase letter uses more space than upper case, such as ? -> ss |
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625 It is slower than fd_os_cmp... |
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626 This function should give the same order as fd_os_cmp, except when it finds 2 strings to be equal. |
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627 Note that the result is NOT the same as strcasecmp !!! |
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628 */ |
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629 int fd_os_almostcasecmp_int(uint8_t * os1, size_t os1sz, uint8_t * os2, size_t os2sz); |
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630 #define fd_os_almostcasecmp(_o1, _l1, _o2, _l2) fd_os_almostcasecmp_int((os0_t)(_o1), _l1, (os0_t)(_o2), _l2) |
| 0 | 631 |
|
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632 /* Analyze a DiameterURI and return its components. |
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633 Return EINVAL if the URI is not valid. |
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634 *diamid is malloc'd on function return and must be freed (it is processed by fd_os_validate_DiameterIdentity). |
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635 *secure is 0 (no security) or 1 (security enabled) on return. |
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636 *port is 0 (default) or a value in host byte order on return. |
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637 *transport is 0 (default) or IPPROTO_* on return. |
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638 *proto is 0 (default) or 'd' (diameter), 'r' (radius), or 't' (tacacs+) on return. |
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639 */ |
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640 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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641 |
| 0 | 642 /*============================================================*/ |
| 643 /* THREADS */ | |
| 644 /*============================================================*/ | |
| 645 | |
| 646 /* Terminate a thread */ | |
| 647 static __inline__ int fd_thr_term(pthread_t * th) | |
| 648 { | |
| 649 void * th_ret = NULL; | |
| 650 | |
| 651 CHECK_PARAMS(th); | |
| 652 | |
| 653 /* Test if it was already terminated */ | |
| 654 if (*th == (pthread_t)NULL) | |
| 655 return 0; | |
| 656 | |
| 657 /* Cancel the thread if it is still running - ignore error if it was already terminated */ | |
| 658 (void) pthread_cancel(*th); | |
| 659 | |
| 660 /* Then join the thread */ | |
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661 CHECK_POSIX( pthread_join(*th, &th_ret) ); |
| 0 | 662 |
|
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663 if (th_ret == PTHREAD_CANCELED) { |
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664 TRACE_DEBUG(ANNOYING, "The thread %p was canceled", *th); |
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665 } else { |
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666 TRACE_DEBUG(CALL, "The thread %p returned %x", *th, th_ret); |
| 0 | 667 } |
| 668 | |
| 669 /* Clean the location */ | |
| 670 *th = (pthread_t)NULL; | |
| 671 | |
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672 return 0; |
| 0 | 673 } |
| 674 | |
|
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675 |
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676 /************* |
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677 Cancelation cleanup handlers for common objects |
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678 *************/ |
| 0 | 679 static __inline__ void fd_cleanup_mutex( void * mutex ) |
| 680 { | |
| 681 CHECK_POSIX_DO( pthread_mutex_unlock((pthread_mutex_t *)mutex), /* */); | |
| 682 } | |
| 683 | |
| 684 static __inline__ void fd_cleanup_rwlock( void * rwlock ) | |
| 685 { | |
| 686 CHECK_POSIX_DO( pthread_rwlock_unlock((pthread_rwlock_t *)rwlock), /* */); | |
| 687 } | |
| 688 | |
| 689 static __inline__ void fd_cleanup_buffer( void * buffer ) | |
| 690 { | |
| 691 free(buffer); | |
| 692 } | |
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693 static __inline__ void fd_cleanup_socket(void * sockptr) |
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694 { |
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695 if (sockptr && (*(int *)sockptr > 0)) { |
| 179 | 696 CHECK_SYS_DO( close(*(int *)sockptr), /* ignore */ ); |
| 184 | 697 *(int *)sockptr = -1; |
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698 } |
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699 } |
| 0 | 700 |
|
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701 |
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702 /*============================================================*/ |
| 0 | 703 /* LISTS */ |
| 704 /*============================================================*/ | |
| 705 | |
| 706 /* The following structure represents a chained list element */ | |
| 707 struct fd_list { | |
| 708 struct fd_list *next; /* next element in the list */ | |
| 709 struct fd_list *prev; /* previous element in the list */ | |
| 710 struct fd_list *head; /* head of the list */ | |
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711 void *o; /* additional pointer, used for any purpose (ex: start of the parent object) */ |
| 0 | 712 }; |
| 713 | |
| 714 /* Initialize a list element */ | |
|
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715 #define FD_LIST_INITIALIZER( _list_name ) \ |
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716 { .next = & _list_name, .prev = & _list_name, .head = & _list_name, .o = NULL } |
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717 #define FD_LIST_INITIALIZER_O( _list_name, _obj ) \ |
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718 { .next = & _list_name, .prev = & _list_name, .head = & _list_name, .o = _obj } |
|
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719 void fd_list_init ( struct fd_list * list, void * obj ); |
| 0 | 720 |
| 721 /* Return boolean, true if the list is empty */ | |
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722 #define FD_IS_LIST_EMPTY( _list ) ((((struct fd_list *)(_list))->head == (_list)) && (((struct fd_list *)(_list))->next == (_list))) |
| 0 | 723 |
| 724 /* Insert an item in a list at known position */ | |
| 725 void fd_list_insert_after ( struct fd_list * ref, struct fd_list * item ); | |
| 726 void fd_list_insert_before ( struct fd_list * ref, struct fd_list * item ); | |
| 727 | |
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728 /* Move all elements from a list at the end of another */ |
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729 void fd_list_move_end(struct fd_list * ref, struct fd_list * senti); |
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730 |
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731 /* 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 | 732 int fd_list_insert_ordered( struct fd_list * head, struct fd_list * item, int (*cmp_fct)(void *, void *), void ** ref_duplicate); |
| 733 | |
| 734 /* Unlink an item from a list */ | |
| 735 void fd_list_unlink ( struct fd_list * item ); | |
| 736 | |
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737 |
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738 |
| 0 | 739 |
| 740 /*============================================================*/ | |
| 741 /* DICTIONARY */ | |
| 742 /*============================================================*/ | |
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743 |
| 0 | 744 /* Structure that contains the complete dictionary definitions */ |
| 745 struct dictionary; | |
| 746 | |
| 747 /* Structure that contains a dictionary object */ | |
| 748 struct dict_object; | |
| 749 | |
| 750 /* Types of object in the dictionary. */ | |
| 751 enum dict_object_type { | |
| 752 DICT_VENDOR = 1, /* Vendor */ | |
| 753 DICT_APPLICATION, /* Diameter Application */ | |
| 754 DICT_TYPE, /* AVP data type */ | |
| 755 DICT_ENUMVAL, /* Named constant (value of an enumerated AVP type) */ | |
| 756 DICT_AVP, /* AVP */ | |
| 757 DICT_COMMAND, /* Diameter Command */ | |
| 758 DICT_RULE /* a Rule for AVP in command or grouped AVP */ | |
| 759 #define DICT_TYPE_MAX DICT_RULE | |
| 760 }; | |
| 761 | |
| 762 /* Initialize a dictionary */ | |
| 763 int fd_dict_init(struct dictionary ** dict); | |
| 764 /* Destroy a dictionary */ | |
| 765 int fd_dict_fini(struct dictionary ** dict); | |
| 766 | |
| 767 /* | |
| 768 * FUNCTION: fd_dict_new | |
| 769 * | |
| 770 * PARAMETERS: | |
| 771 * dict : Pointer to the dictionnary where the object is created | |
| 772 * type : What kind of object must be created | |
| 773 * data : pointer to the data for the object. | |
| 774 * type parameter is used to determine the type of data (see bellow for detail). | |
| 775 * parent : a reference to a parent object, if needed. | |
| 776 * ref : upon successful creation, reference to new object is stored here if !null. | |
| 777 * | |
| 778 * DESCRIPTION: | |
| 779 * Create a new object in the dictionary. | |
| 780 * See following object sections in this header file for more information on data and parent parameters format. | |
| 781 * | |
| 782 * RETURN VALUE: | |
| 783 * 0 : The object is created in the dictionary. | |
| 784 * EINVAL : A parameter is invalid. | |
| 785 * EEXIST : This object is already defined in the dictionary (with conflicting data). | |
| 786 * If "ref" is not NULL, it points to the existing element on return. | |
| 787 * (other standard errors may be returned, too, with their standard meaning. Example: | |
| 788 * ENOMEM : Memory allocation for the new object element failed.) | |
| 789 */ | |
|
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790 int fd_dict_new ( struct dictionary * dict, enum dict_object_type type, void * data, struct dict_object * parent, struct dict_object ** ref ); |
| 0 | 791 |
| 792 /* | |
| 793 * FUNCTION: fd_dict_search | |
| 794 * | |
| 795 * PARAMETERS: | |
| 796 * dict : Pointer to the dictionnary where the object is searched | |
| 797 * type : type of object that is being searched | |
| 798 * criteria : how the object must be searched. See object-related sections bellow for more information. | |
| 799 * what : depending on criteria, the data that must be searched. | |
| 800 * result : On successful return, pointer to the object is stored here. | |
| 801 * retval : this value is returned if the object is not found and result is not NULL. | |
| 802 * | |
| 803 * DESCRIPTION: | |
| 804 * Perform a search in the dictionary. | |
| 805 * See the object-specific sections bellow to find how to look for each objects. | |
| 806 * If the "result" parameter is NULL, the function is used to check if an object is in the dictionary. | |
| 807 * Otherwise, a reference to the object is stored in result if found. | |
| 808 * If result is not NULL and the object is not found, retval is returned (should be 0 or ENOENT usually) | |
| 809 * | |
| 810 * RETURN VALUE: | |
| 811 * 0 : The object has been found in the dictionary, or *result is NULL. | |
| 812 * EINVAL : A parameter is invalid. | |
| 813 * ENOENT : No matching object has been found, and result was NULL. | |
| 814 */ | |
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815 int fd_dict_search ( struct dictionary * dict, enum dict_object_type type, int criteria, void * what, struct dict_object ** result, int retval ); |
| 0 | 816 |
| 817 /* Special case: get the generic error command object */ | |
|
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818 int fd_dict_get_error_cmd(struct dictionary * dict, struct dict_object ** obj); |
| 0 | 819 |
| 820 /* | |
| 821 * FUNCTION: fd_dict_getval | |
| 822 * | |
| 823 * PARAMETERS: | |
| 824 * object : Pointer to a dictionary object. | |
| 825 * data : pointer to a structure to hold the data for the object. | |
| 826 * The type is the same as "data" parameter in fd_dict_new function. | |
| 827 * | |
| 828 * DESCRIPTION: | |
| 829 * Retrieve content of a dictionary object. | |
| 830 * See following object sections in this header file for more information on data and parent parameters format. | |
| 831 * | |
| 832 * RETURN VALUE: | |
| 833 * 0 : The content of the object has been retrieved. | |
| 834 * EINVAL : A parameter is invalid. | |
| 835 */ | |
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836 int fd_dict_getval ( struct dict_object * object, void * val); |
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837 int fd_dict_gettype ( struct dict_object * object, enum dict_object_type * type); |
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838 int fd_dict_getdict ( struct dict_object * object, struct dictionary ** dict); |
| 0 | 839 |
| 840 /* Debug functions */ | |
| 841 void fd_dict_dump_object(struct dict_object * obj); | |
| 842 void fd_dict_dump(struct dictionary * dict); | |
| 843 | |
| 844 /* | |
| 845 *************************************************************************** | |
| 846 * | |
| 847 * Vendor object | |
| 848 * | |
| 849 * These types are used to manage vendors in the dictionary | |
| 850 * | |
| 851 *************************************************************************** | |
| 852 */ | |
| 853 | |
| 854 /* Type to hold a Vendor ID: "SMI Network Management Private Enterprise Codes" (RFC3232) */ | |
| 855 typedef uint32_t vendor_id_t; | |
| 856 | |
| 857 /* Type to hold data associated to a vendor */ | |
| 858 struct dict_vendor_data { | |
| 859 vendor_id_t vendor_id; /* ID of a vendor */ | |
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860 char * vendor_name; /* The name of this vendor */ |
| 0 | 861 }; |
| 862 | |
| 863 /* The criteria for searching a vendor object in the dictionary */ | |
| 864 enum { | |
| 865 VENDOR_BY_ID = 10, /* "what" points to a vendor_id_t */ | |
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866 VENDOR_BY_NAME, /* "what" points to a char * */ |
| 0 | 867 VENDOR_OF_APPLICATION /* "what" points to a struct dict_object containing an application (see bellow) */ |
| 868 }; | |
| 869 | |
| 870 /*** | |
| 871 * API usage : | |
| 872 | |
| 873 Note: the value of "vendor_name" is copied when the object is created, and the string may be disposed afterwards. | |
| 874 On the other side, when value is retrieved with dict_getval, the string is not copied and MUST NOT be freed. It will | |
| 875 be freed automatically along with the object itself with call to dict_fini later. | |
| 876 | |
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877 - fd_dict_new: |
| 0 | 878 The "parent" parameter is not used for vendors. |
| 879 Sample code to create a vendor: | |
| 880 { | |
| 881 int ret; | |
| 882 struct dict_object * myvendor; | |
| 883 struct dict_vendor_data myvendordata = { 23455, "my vendor name" }; -- just an example... | |
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884 ret = fd_dict_new ( dict, DICT_VENDOR, &myvendordata, NULL, &myvendor ); |
| 0 | 885 } |
| 886 | |
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887 - fd_dict_search: |
| 0 | 888 Sample codes to look for a vendor object, by its id or name: |
| 889 { | |
| 890 int ret; | |
| 891 struct dict_object * vendor_found; | |
| 892 vendor_id_t vendorid = 23455; | |
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893 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_ID, &vendorid, &vendor_found, ENOENT); |
| 0 | 894 - or - |
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895 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_NAME, "my vendor name", &vendor_found, ENOENT); |
| 0 | 896 } |
| 897 | |
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898 - fd_dict_getval: |
| 0 | 899 Sample code to retrieve the data from a vendor object: |
| 900 { | |
| 901 int ret; | |
| 902 struct dict_object * myvendor; | |
| 903 struct dict_vendor_data myvendordata; | |
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904 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_NAME, "my vendor name", &myvendor, ENOENT); |
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905 ret = fd_dict_getval ( myvendor, &myvendordata ); |
| 0 | 906 printf("my vendor id: %d\n", myvendordata.vendor_id ); |
| 907 } | |
| 908 | |
| 909 */ | |
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910 |
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911 /* Special function: */ |
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912 uint32_t * fd_dict_get_vendorid_list(struct dictionary * dict); |
| 0 | 913 |
| 914 /* | |
| 915 *************************************************************************** | |
| 916 * | |
| 917 * Application object | |
| 918 * | |
| 919 * These types are used to manage Diameter applications in the dictionary | |
| 920 * | |
| 921 *************************************************************************** | |
| 922 */ | |
| 923 | |
| 924 /* Type to hold a Diameter application ID: IANA assigned value for this application. */ | |
| 925 typedef uint32_t application_id_t; | |
| 926 | |
| 927 /* Type to hold data associated to an application */ | |
| 928 struct dict_application_data { | |
| 929 application_id_t application_id; /* ID of the application */ | |
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930 char * application_name; /* The name of this application */ |
| 0 | 931 }; |
| 932 | |
| 933 /* The criteria for searching an application object in the dictionary */ | |
| 934 enum { | |
| 935 APPLICATION_BY_ID = 20, /* "what" points to a application_id_t */ | |
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936 APPLICATION_BY_NAME, /* "what" points to a char * */ |
| 0 | 937 APPLICATION_OF_TYPE, /* "what" points to a struct dict_object containing a type object (see bellow) */ |
| 938 APPLICATION_OF_COMMAND /* "what" points to a struct dict_object containing a command (see bellow) */ | |
| 939 }; | |
| 940 | |
| 941 /*** | |
| 942 * API usage : | |
| 943 | |
| 944 The "parent" parameter of dict_new may point to a vendor object to inform of what vendor defines the application. | |
| 945 for standard-track applications, the "parent" parameter should be NULL. | |
| 946 The vendor associated to an application is retrieved with VENDOR_OF_APPLICATION search criteria on vendors. | |
| 947 | |
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948 - fd_dict_new: |
| 0 | 949 Sample code for application creation: |
| 950 { | |
| 951 int ret; | |
| 952 struct dict_object * vendor; | |
| 953 struct dict_object * appl; | |
| 954 struct dict_vendor_data vendor_data = { | |
| 955 23455, | |
| 956 "my vendor name" | |
| 957 }; | |
| 958 struct dict_application_data app_data = { | |
| 959 9789, | |
| 960 "my vendor's application" | |
| 961 }; | |
| 962 | |
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963 ret = fd_dict_new ( dict, DICT_VENDOR, &vendor_data, NULL, &vendor ); |
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964 ret = fd_dict_new ( dict, DICT_APPLICATION, &app_data, vendor, &appl ); |
| 0 | 965 } |
| 966 | |
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967 - fd_dict_search: |
| 0 | 968 Sample code to retrieve the vendor of an application |
| 969 { | |
| 970 int ret; | |
| 971 struct dict_object * vendor, * appli; | |
| 972 | |
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973 ret = fd_dict_search ( dict, DICT_APPLICATION, APPLICATION_BY_NAME, "my vendor's application", &appli, ENOENT); |
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974 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_OF_APPLICATION, appli, &vendor, ENOENT); |
| 0 | 975 } |
| 976 | |
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977 - fd_dict_getval: |
| 0 | 978 Sample code to retrieve the data from an application object: |
| 979 { | |
| 980 int ret; | |
| 981 struct dict_object * appli; | |
| 982 struct dict_application_data appl_data; | |
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983 ret = fd_dict_search ( dict, DICT_APPLICATION, APPLICATION_BY_NAME, "my vendor's application", &appli, ENOENT); |
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984 ret = fd_dict_getval ( appli, &appl_data ); |
| 0 | 985 printf("my application id: %s\n", appl_data.application_id ); |
| 986 } | |
| 987 | |
| 988 */ | |
| 989 | |
| 990 /* | |
| 991 *************************************************************************** | |
| 992 * | |
| 993 * Type object | |
| 994 * | |
| 995 * These types are used to manage AVP data types in the dictionary | |
| 996 * | |
| 997 *************************************************************************** | |
| 998 */ | |
| 999 | |
| 1000 /* Type to store any AVP value */ | |
| 1001 union avp_value { | |
| 1002 struct { | |
| 1003 uint8_t *data; /* bytes buffer */ | |
| 1004 size_t len; /* length of the data buffer */ | |
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1005 } os; /* Storage for an octet string */ |
| 0 | 1006 int32_t i32; /* integer 32 */ |
| 1007 int64_t i64; /* integer 64 */ | |
| 1008 uint32_t u32; /* unsigned 32 */ | |
| 1009 uint64_t u64; /* unsigned 64 */ | |
| 1010 float f32; /* float 32 */ | |
| 1011 double f64; /* float 64 */ | |
| 1012 }; | |
| 1013 | |
| 1014 /* These are the basic AVP types defined in RFC3588bis */ | |
| 1015 enum dict_avp_basetype { | |
| 1016 AVP_TYPE_GROUPED, | |
| 1017 AVP_TYPE_OCTETSTRING, | |
| 1018 AVP_TYPE_INTEGER32, | |
| 1019 AVP_TYPE_INTEGER64, | |
| 1020 AVP_TYPE_UNSIGNED32, | |
| 1021 AVP_TYPE_UNSIGNED64, | |
| 1022 AVP_TYPE_FLOAT32, | |
| 1023 AVP_TYPE_FLOAT64 | |
| 1024 #define AVP_TYPE_MAX AVP_TYPE_FLOAT64 | |
| 1025 }; | |
| 1026 | |
| 1027 /* Callbacks that can be associated with a derived type to easily interpret the AVP value. */ | |
| 1028 /* | |
| 1029 * CALLBACK: dict_avpdata_interpret | |
| 1030 * | |
| 1031 * PARAMETERS: | |
| 1032 * val : Pointer to the AVP value that must be interpreted. | |
| 1033 * interpreted : The result of interpretation is stored here. The format and meaning depends on each type. | |
| 1034 * | |
| 1035 * DESCRIPTION: | |
| 1036 * This callback can be provided with a derived type in order to facilitate the interpretation of formated data. | |
| 1037 * For example, when an AVP of type "Address" is received, it can be used to convert the octetstring into a struct sockaddr. | |
| 1038 * This callback is not called directly, but through the message's API msg_avp_value_interpret function. | |
| 1039 * | |
| 1040 * RETURN VALUE: | |
| 1041 * 0 : Operation complete. | |
| 1042 * !0 : An error occurred, the error code is returned. | |
| 1043 */ | |
| 1044 typedef int (*dict_avpdata_interpret) (union avp_value * value, void * interpreted); | |
| 1045 /* | |
| 1046 * CALLBACK: dict_avpdata_encode | |
| 1047 * | |
| 1048 * PARAMETERS: | |
| 1049 * data : The formated data that must be stored in the AVP value. | |
| 1050 * val : Pointer to the AVP value storage area where the data must be stored. | |
| 1051 * | |
| 1052 * DESCRIPTION: | |
| 1053 * This callback can be provided with a derived type in order to facilitate the encoding of formated data. | |
| 1054 * For example, it can be used to convert a struct sockaddr in an AVP value of type Address. | |
| 1055 * This callback is not called directly, but through the message's API msg_avp_value_encode function. | |
| 1056 * If the callback is defined for an OctetString based type, the created string must be malloc'd. free will be called | |
| 1057 * automatically later. | |
| 1058 * | |
| 1059 * RETURN VALUE: | |
| 1060 * 0 : Operation complete. | |
| 1061 * !0 : An error occurred, the error code is returned. | |
| 1062 */ | |
| 1063 typedef int (*dict_avpdata_encode) (void * data, union avp_value * val); | |
| 1064 | |
| 1065 | |
| 1066 /* Type to hold data associated to a derived AVP data type */ | |
| 1067 struct dict_type_data { | |
| 1068 enum dict_avp_basetype type_base; /* How the data of such AVP must be interpreted */ | |
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1069 char * type_name; /* The name of this type */ |
| 0 | 1070 dict_avpdata_interpret type_interpret;/* cb to convert the AVP value in more comprehensive format (or NULL) */ |
| 1071 dict_avpdata_encode type_encode; /* cb to convert formatted data into an AVP value (or NULL) */ | |
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1072 void (*type_dump)(union avp_value * val, FILE * fstr); /* cb called by fd_msg_dump_one for this type of data (if != NULL), to dump the AVP value in fstr */ |
| 0 | 1073 }; |
| 1074 | |
| 1075 /* The criteria for searching a type object in the dictionary */ | |
| 1076 enum { | |
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1077 TYPE_BY_NAME = 30, /* "what" points to a char * */ |
| 0 | 1078 TYPE_OF_ENUMVAL, /* "what" points to a struct dict_object containing an enumerated constant (DICT_ENUMVAL, see bellow). */ |
| 1079 TYPE_OF_AVP /* "what" points to a struct dict_object containing an AVP object. */ | |
| 1080 }; | |
| 1081 | |
| 1082 | |
| 1083 /*** | |
| 1084 * API usage : | |
| 1085 | |
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1086 - fd_dict_new: |
| 0 | 1087 The "parent" parameter may point to an application object, when a type is defined by a Diameter application. |
| 1088 | |
| 1089 Sample code: | |
| 1090 { | |
| 1091 int ret; | |
| 1092 struct dict_object * mytype; | |
| 1093 struct dict_type_data mytypedata = | |
| 1094 { | |
| 1095 AVP_TYPE_OCTETSTRING, | |
| 1096 "Address", | |
| 1097 NULL, | |
| 1098 NULL | |
| 1099 }; | |
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1100 ret = fd_dict_new ( dict, DICT_TYPE, &mytypedata, NULL, &mytype ); |
| 0 | 1101 } |
| 1102 | |
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1103 - fd_dict_search: |
| 0 | 1104 Sample code: |
| 1105 { | |
| 1106 int ret; | |
| 1107 struct dict_object * address_type; | |
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1108 ret = fd_dict_search ( dict, DICT_TYPE, TYPE_BY_NAME, "Address", &address_type, ENOENT); |
| 0 | 1109 } |
| 1110 | |
| 1111 */ | |
| 1112 | |
| 1113 /* | |
| 1114 *************************************************************************** | |
| 1115 * | |
| 1116 * Enumerated values object | |
| 1117 * | |
| 1118 * These types are used to manage named constants of some AVP, | |
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1119 * for enumerated types. freeDiameter allows constants for types others than Unsigned32 |
| 0 | 1120 * |
| 1121 *************************************************************************** | |
| 1122 */ | |
| 1123 | |
| 1124 /* Type to hold data of named constants for AVP */ | |
| 1125 struct dict_enumval_data { | |
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1126 char * enum_name; /* The name of this constant */ |
| 0 | 1127 union avp_value enum_value; /* Value of the constant. Union term depends on parent type's base type. */ |
| 1128 }; | |
| 1129 | |
| 1130 /* The criteria for searching a constant in the dictionary */ | |
| 1131 enum { | |
| 1132 ENUMVAL_BY_STRUCT = 40, /* "what" points to a struct dict_enumval_request as defined bellow */ | |
| 1133 }; | |
| 1134 | |
| 1135 struct dict_enumval_request { | |
| 1136 /* Identifier of the parent type, one of the following must not be NULL */ | |
| 1137 struct dict_object *type_obj; | |
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1138 char * type_name; |
| 0 | 1139 |
| 1140 /* Search criteria for the constant */ | |
| 1141 struct dict_enumval_data search; /* search.enum_value is used only if search.enum_name == NULL */ | |
| 1142 }; | |
| 1143 | |
| 1144 /*** | |
| 1145 * API usage : | |
| 1146 | |
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1147 - fd_dict_new: |
| 0 | 1148 The "parent" parameter must point to a derived type object. |
| 1149 Sample code to create a type "Boolean" with two constants "True" and "False": | |
| 1150 { | |
| 1151 int ret; | |
| 1152 struct dict_object * type_boolean; | |
| 1153 struct dict_type_data type_boolean_data = | |
| 1154 { | |
| 1155 AVP_TYPE_INTEGER32, | |
| 1156 "Boolean", | |
| 1157 NULL, | |
| 1158 NULL | |
| 1159 }; | |
| 1160 struct dict_enumval_data boolean_false = | |
| 1161 { | |
| 1162 .enum_name="False", | |
| 1163 .enum_value.i32 = 0 | |
| 1164 }; | |
| 1165 struct dict_enumval_data boolean_true = | |
| 1166 { | |
| 1167 .enum_name="True", | |
| 1168 .enum_value.i32 = -1 | |
| 1169 }; | |
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1170 ret = fd_dict_new ( dict, DICT_TYPE, &type_boolean_data, NULL, &type_boolean ); |
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1171 ret = fd_dict_new ( dict, DICT_ENUMVAL, &boolean_false, type_boolean, NULL ); |
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1172 ret = fd_dict_new ( dict, DICT_ENUMVAL, &boolean_true , type_boolean, NULL ); |
| 0 | 1173 |
| 1174 } | |
| 1175 | |
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1176 - fd_dict_search: |
| 0 | 1177 Sample code to look for a constant name, by its value: |
| 1178 { | |
| 1179 int ret; | |
| 1180 struct dict_object * value_found; | |
| 1181 struct dict_enumval_request boolean_by_value = | |
| 1182 { | |
| 1183 .type_name = "Boolean", | |
| 1184 .search.enum_name=NULL, | |
| 1185 .search.enum_value.i32 = -1 | |
| 1186 }; | |
| 1187 | |
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1188 ret = fd_dict_search ( dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &boolean_by_value, &value_found, ENOENT); |
| 0 | 1189 } |
| 1190 | |
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1191 - fd_dict_getval: |
| 0 | 1192 Sample code to retrieve the data from a constant object: |
| 1193 { | |
| 1194 int ret; | |
| 1195 struct dict_object * value_found; | |
| 1196 struct dict_enumval_data boolean_data = NULL; | |
| 1197 struct dict_enumval_request boolean_by_value = | |
| 1198 { | |
| 1199 .type_name = "Boolean", | |
| 1200 .search.enum_name=NULL, | |
| 1201 .search.enum_value.i32 = 0 | |
| 1202 }; | |
| 1203 | |
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1204 ret = fd_dict_search ( dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &boolean_by_value, &value_found, ENOENT); |
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1205 ret = fd_dict_getval ( value_found, &boolean_data ); |
| 0 | 1206 printf(" Boolean with value 0: %s", boolean_data.enum_name ); |
| 1207 } | |
| 1208 */ | |
| 1209 | |
| 1210 /* | |
| 1211 *************************************************************************** | |
| 1212 * | |
| 1213 * AVP object | |
| 1214 * | |
| 1215 * These objects are used to manage AVP definitions in the dictionary | |
| 1216 * | |
| 1217 *************************************************************************** | |
| 1218 */ | |
| 1219 | |
| 1220 /* Type to hold an AVP code. For vendor 0, these codes are assigned by IANA. Otherwise, it is managed by the vendor */ | |
| 1221 typedef uint32_t avp_code_t; | |
| 1222 | |
| 1223 /* Values of AVP flags */ | |
| 1224 #define AVP_FLAG_VENDOR 0x80 | |
| 1225 #define AVP_FLAG_MANDATORY 0x40 | |
| 1226 #define AVP_FLAG_RESERVED3 0x20 | |
| 1227 #define AVP_FLAG_RESERVED4 0x10 | |
| 1228 #define AVP_FLAG_RESERVED5 0x08 | |
| 1229 #define AVP_FLAG_RESERVED6 0x04 | |
| 1230 #define AVP_FLAG_RESERVED7 0x02 | |
| 1231 #define AVP_FLAG_RESERVED8 0x01 | |
| 1232 | |
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1233 /* For dumping flags and values */ |
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1234 #define DUMP_AVPFL_str "%c%c" |
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1235 #define DUMP_AVPFL_val(_val) (_val & AVP_FLAG_VENDOR)?'V':'-' , (_val & AVP_FLAG_MANDATORY)?'M':'-' |
| 0 | 1236 |
| 1237 /* Type to hold data associated to an avp */ | |
| 1238 struct dict_avp_data { | |
| 1239 avp_code_t avp_code; /* Code of the avp */ | |
| 1240 vendor_id_t avp_vendor; /* Vendor of the AVP, or 0 */ | |
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1241 char * avp_name; /* Name of this AVP */ |
| 0 | 1242 uint8_t avp_flag_mask; /* Mask of fixed AVP flags */ |
| 1243 uint8_t avp_flag_val; /* Values of the fixed flags */ | |
| 1244 enum dict_avp_basetype avp_basetype; /* Basic type of data found in the AVP */ | |
| 1245 }; | |
| 1246 | |
| 1247 /* The criteria for searching an avp object in the dictionary */ | |
| 1248 enum { | |
| 1249 AVP_BY_CODE = 50, /* "what" points to an avp_code_t, vendor is always 0 */ | |
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1250 AVP_BY_NAME, /* "what" points to a char *, vendor is always 0 */ |
| 0 | 1251 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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1252 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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1253 AVP_BY_NAME_ALL_VENDORS /* "what" points to a string. Might be quite slow... */ |
| 0 | 1254 }; |
| 1255 | |
| 1256 /* Struct used for some researchs */ | |
| 1257 struct dict_avp_request { | |
| 1258 vendor_id_t avp_vendor; | |
| 1259 avp_code_t avp_code; | |
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1260 char * avp_name; |
| 0 | 1261 }; |
| 1262 | |
| 1263 | |
| 1264 /*** | |
| 1265 * API usage : | |
| 1266 | |
| 1267 If "parent" parameter is not NULL during AVP creation, it must point to a DICT_TYPE object. | |
| 1268 The extended type is then attached to the AVP. In case where it is an enumerated type, the value of | |
| 1269 AVP is automatically interpreted in debug messages, and in message checks. | |
| 1270 The derived type of an AVP can be retrieved with: dict_search ( DICT_TYPE, TYPE_OF_AVP, avp, ... ) | |
| 1271 | |
| 1272 To create the rules (ABNF) for children of Grouped AVP, see the DICT_RULE related part. | |
| 1273 | |
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1274 - fd_dict_new: |
| 0 | 1275 Sample code for AVP creation: |
| 1276 { | |
| 1277 int ret; | |
| 1278 struct dict_object * user_name_avp; | |
| 1279 struct dict_object * boolean_type; | |
| 1280 struct dict_object * sample_boolean_avp; | |
| 1281 struct dict_avp_data user_name_data = { | |
| 1282 1, // code | |
| 1283 0, // vendor | |
| 1284 "User-Name", // name | |
| 1285 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 | |
| 1286 AVP_FLAG_MANDATORY, // the V flag must be cleared, the M flag must be set. | |
| 1287 AVP_TYPE_OCTETSTRING // User-Name AVP contains OctetString data (further precision such as UTF8String can be given with a parent derived type) | |
| 1288 }; | |
| 1289 struct dict_avp_data sample_boolean_data = { | |
| 1290 31337, | |
| 1291 23455, | |
| 1292 "Sample-Boolean", | |
| 1293 AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, | |
| 1294 AVP_FLAG_VENDOR, | |
| 1295 AVP_TYPE_INTEGER32 // This MUST be the same as parent type's | |
| 1296 }; | |
| 1297 | |
| 1298 -- Create an AVP with a base type -- | |
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1299 ret = fd_dict_new ( dict, DICT_AVP, &user_name_data, NULL, &user_name_avp ); |
| 0 | 1300 |
| 1301 -- Create an AVP with a derived type -- | |
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1302 ret = fd_dict_search ( dict, DICT_TYPE, TYPE_BY_NAME, "Boolean", &boolean_type, ENOENT); |
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1303 ret = fd_dict_new ( dict, DICT_AVP, &sample_boolean_data , boolean_type, &sample_boolean_avp ); |
| 0 | 1304 |
| 1305 } | |
| 1306 | |
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1307 - fd_dict_search: |
| 0 | 1308 Sample code to look for an AVP |
| 1309 { | |
| 1310 int ret; | |
| 1311 struct dict_object * avp_username; | |
| 1312 struct dict_object * avp_sampleboolean; | |
| 1313 struct dict_avp_request avpvendorboolean = | |
| 1314 { | |
| 1315 .avp_vendor = 23455, | |
| 1316 .avp_name = "Sample-Boolean" | |
| 1317 }; | |
| 1318 | |
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1319 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME, "User-Name", &avp_username, ENOENT); |
| 0 | 1320 |
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1321 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME_AND_VENDOR, &avpvendorboolean, &avp_sampleboolean, ENOENT); |
| 0 | 1322 |
| 1323 } | |
| 1324 | |
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1325 - fd_dict_getval: |
| 0 | 1326 Sample code to retrieve the data from an AVP object: |
| 1327 { | |
| 1328 int ret; | |
| 1329 struct dict_object * avp_username; | |
| 1330 struct dict_avp_data user_name_data; | |
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1331 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME, "User-Name", &avp_username, ENOENT); |
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1332 ret = fd_dict_getval ( avp_username, &user_name_data ); |
| 0 | 1333 printf("User-Name code: %d\n", user_name_data.avp_code ); |
| 1334 } | |
| 1335 | |
| 1336 */ | |
| 1337 | |
| 1338 /* | |
| 1339 *************************************************************************** | |
| 1340 * | |
| 1341 * Command object | |
| 1342 * | |
| 1343 * These types are used to manage commands objects in the dictionary | |
| 1344 * | |
| 1345 *************************************************************************** | |
| 1346 */ | |
| 1347 | |
| 1348 /* Type to hold a Diameter command code: IANA assigned values. 0x0-0x7fffff=standard, 0x800000-0xfffffd=vendors, 0xfffffe-0xffffff=experimental */ | |
| 1349 typedef uint32_t command_code_t; | |
| 1350 | |
| 1351 /* Values of command flags */ | |
| 1352 #define CMD_FLAG_REQUEST 0x80 | |
| 1353 #define CMD_FLAG_PROXIABLE 0x40 | |
| 1354 #define CMD_FLAG_ERROR 0x20 | |
| 1355 #define CMD_FLAG_RETRANSMIT 0x10 | |
| 1356 #define CMD_FLAG_RESERVED5 0x08 | |
| 1357 #define CMD_FLAG_RESERVED6 0x04 | |
| 1358 #define CMD_FLAG_RESERVED7 0x02 | |
| 1359 #define CMD_FLAG_RESERVED8 0x01 | |
| 1360 | |
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1361 /* For dumping flags and values */ |
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1362 #define DUMP_CMDFL_str "%c%c%c%c" |
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1363 #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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1364 |
| 0 | 1365 /* Type to hold data associated to a command */ |
| 1366 struct dict_cmd_data { | |
| 1367 command_code_t cmd_code; /* code of the command */ | |
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1368 char * cmd_name; /* Name of the command */ |
| 0 | 1369 uint8_t cmd_flag_mask; /* Mask of fixed-value flags */ |
| 1370 uint8_t cmd_flag_val; /* values of the fixed flags */ | |
| 1371 }; | |
| 1372 | |
| 1373 /* The criteria for searching an avp object in the dictionary */ | |
| 1374 enum { | |
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1375 CMD_BY_NAME = 60, /* "what" points to a char * */ |
| 0 | 1376 CMD_BY_CODE_R, /* "what" points to a command_code_t. The "Request" command is returned. */ |
| 1377 CMD_BY_CODE_A, /* "what" points to a command_code_t. The "Answer" command is returned. */ | |
| 1378 CMD_ANSWER /* "what" points to a struct dict_object of a request command. The corresponding "Answer" command is returned. */ | |
| 1379 }; | |
| 1380 | |
| 1381 | |
| 1382 /*** | |
| 1383 * API usage : | |
| 1384 | |
| 1385 The "parent" parameter of dict_new may point to an application object to inform of what application defines the command. | |
| 1386 The application associated to a command is retrieved with APPLICATION_OF_COMMAND search criteria on applications. | |
| 1387 | |
| 1388 To create the rules for children of commands, see the DICT_RULE related part. | |
| 1389 | |
| 1390 Note that the "Request" and "Answer" commands are two independant objects. This allows to have different rules for each. | |
| 1391 | |
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1392 - fd_dict_new: |
| 0 | 1393 Sample code for command creation: |
| 1394 { | |
| 1395 int ret; | |
| 1396 struct dict_object * cer; | |
| 1397 struct dict_object * cea; | |
| 1398 struct dict_cmd_data ce_data = { | |
| 1399 257, // code | |
| 1400 "Capabilities-Exchange-Request", // name | |
| 1401 CMD_FLAG_REQUEST, // mask | |
| 1402 CMD_FLAG_REQUEST // value. Only the "R" flag is constrained here, set. | |
| 1403 }; | |
| 1404 | |
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1405 ret = fd_dict_new (dict, DICT_COMMAND, &ce_data, NULL, &cer ); |
| 0 | 1406 |
| 1407 ce_data.cmd_name = "Capabilities-Exchange-Answer"; | |
| 1408 ce_data.cmd_flag_val = 0; // Same constraint on "R" flag, but this time it must be cleared. | |
| 1409 | |
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1410 ret = fd_dict_new ( dict, DICT_COMMAND, &ce_data, NULL, &cea ); |
| 0 | 1411 } |
| 1412 | |
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1413 - fd_dict_search: |
| 0 | 1414 Sample code to look for a command |
| 1415 { | |
| 1416 int ret; | |
| 1417 struct dict_object * cer, * cea; | |
| 1418 command_code_t code = 257; | |
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1419 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &cer, ENOENT); |
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1420 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_CODE_R, &code, &cer, ENOENT); |
| 0 | 1421 } |
| 1422 | |
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1423 - fd_dict_getval: |
| 0 | 1424 Sample code to retrieve the data from a command object: |
| 1425 { | |
| 1426 int ret; | |
| 1427 struct dict_object * cer; | |
| 1428 struct dict_object * cea; | |
| 1429 struct dict_cmd_data cea_data; | |
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1430 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &cer, ENOENT); |
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1431 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_ANSWER, cer, &cea, ENOENT); |
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1432 ret = fd_dict_getval ( cea, &cea_data ); |
| 0 | 1433 printf("Answer to CER: %s\n", cea_data.cmd_name ); |
| 1434 } | |
| 1435 | |
| 1436 */ | |
| 1437 | |
| 1438 /* | |
| 1439 *************************************************************************** | |
| 1440 * | |
| 1441 * Rule object | |
| 1442 * | |
| 1443 * These objects are used to manage rules in the dictionary (ABNF implementation) | |
| 1444 * This is used for checking messages validity (more powerful than a DTD) | |
| 1445 * | |
| 1446 *************************************************************************** | |
| 1447 */ | |
| 1448 | |
| 1449 /* This defines the kind of rule that is defined */ | |
| 1450 enum rule_position { | |
| 1451 RULE_FIXED_HEAD = 1, /* The AVP must be at the head of the group. The rule_order field is used to specify the position. */ | |
| 1452 RULE_REQUIRED, /* The AVP must be present in the parent, but its position is not defined. */ | |
| 1453 RULE_OPTIONAL, /* The AVP may be present in the message. Used to specify a max number of occurences for example */ | |
| 1454 RULE_FIXED_TAIL /* The AVP must be at the end of the group. The rule_order field is used to specify the position. */ | |
| 1455 }; | |
| 1456 | |
| 1457 /* Content of a RULE object data */ | |
| 1458 struct dict_rule_data { | |
| 1459 struct dict_object *rule_avp; /* Pointer to the AVP object that is concerned by this rule */ | |
| 1460 enum rule_position rule_position; /* The position in which the rule_avp must appear in the parent */ | |
| 1461 unsigned rule_order; /* for RULE_FIXED_* rules, the place. 1,2,3.. for HEAD rules; ...,3,2,1 for TAIL rules. */ | |
| 1462 int rule_min; /* Minimum number of occurences. -1 means "default": 0 for optional rules, 1 for other rules */ | |
| 1463 int rule_max; /* Maximum number of occurences. -1 means no maximum. 0 means the AVP is forbidden. */ | |
| 1464 }; | |
| 1465 | |
| 1466 /* The criteria for searching a rule in the dictionary */ | |
| 1467 enum { | |
| 1468 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?" */ | |
| 1469 }; | |
| 1470 | |
| 1471 /* Structure for querying the dictionary about a rule */ | |
| 1472 struct dict_rule_request { | |
| 1473 struct dict_object *rule_parent; /* The grouped avp or command to which the rule apply */ | |
| 1474 struct dict_object *rule_avp; /* The AVP concerned by this rule */ | |
| 1475 }; | |
| 1476 | |
| 1477 | |
| 1478 /*** | |
| 1479 * API usage : | |
| 1480 | |
| 1481 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). | |
| 1482 | |
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1483 - fd_dict_new: |
| 0 | 1484 Sample code for rule creation. Let's create the Proxy-Info grouped AVP for example. |
| 1485 { | |
| 1486 int ret; | |
| 1487 struct dict_object * proxy_info_avp; | |
| 1488 struct dict_object * proxy_host_avp; | |
| 1489 struct dict_object * proxy_state_avp; | |
| 1490 struct dict_object * diameteridentity_type; | |
| 1491 struct dict_rule_data rule_data; | |
| 1492 struct dict_type_data di_type_data = { AVP_TYPE_OCTETSTRING, "DiameterIdentity", NULL, NULL }; | |
| 1493 struct dict_avp_data proxy_info_data = { 284, 0, "Proxy-Info", AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_GROUPED }; | |
| 1494 struct dict_avp_data proxy_host_data = { 280, 0, "Proxy-Host", AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_OCTETSTRING }; | |
| 1495 struct dict_avp_data proxy_state_data = { 33, 0, "Proxy-State",AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_OCTETSTRING }; | |
| 1496 | |
| 1497 -- Create the parent AVP | |
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1498 ret = fd_dict_new ( dict, DICT_AVP, &proxy_info_data, NULL, &proxy_info_avp ); |
| 0 | 1499 |
| 1500 -- Create the first child AVP. | |
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1501 ret = fd_dict_new ( dict, DICT_TYPE, &di_type_data, NULL, &diameteridentity_type ); |
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1502 ret = fd_dict_new ( dict, DICT_AVP, &proxy_host_data, diameteridentity_type, &proxy_host_avp ); |
| 0 | 1503 |
| 1504 -- Create the other child AVP | |
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1505 ret = fd_dict_new ( dict, DICT_AVP, &proxy_state_data, NULL, &proxy_state_avp ); |
| 0 | 1506 |
| 1507 -- Now we can create the rules. Both children AVP are mandatory. | |
| 1508 rule_data.rule_position = RULE_REQUIRED; | |
| 1509 rule_data.rule_min = -1; | |
| 1510 rule_data.rule_max = -1; | |
| 1511 | |
| 1512 rule_data.rule_avp = proxy_host_avp; | |
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1513 ret = fd_dict_new ( dict, DICT_RULE, &rule_data, proxy_info_avp, NULL ); |
| 0 | 1514 |
| 1515 rule_data.rule_avp = proxy_state_avp; | |
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1516 ret = fd_dict_new ( dict, DICT_RULE, &rule_data, proxy_info_avp, NULL ); |
| 0 | 1517 } |
| 1518 | |
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1519 - fd_dict_search and fd_dict_getval are similar to previous examples. |
| 0 | 1520 |
| 1521 */ | |
| 1522 | |
| 1523 /* Define some hard-coded values */ | |
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1524 /* Application */ |
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1525 #define AI_RELAY 0xffffffff |
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1526 |
| 0 | 1527 /* Commands Codes */ |
| 1528 #define CC_CAPABILITIES_EXCHANGE 257 | |
| 1529 #define CC_RE_AUTH 258 | |
| 1530 #define CC_ACCOUNTING 271 | |
| 1531 #define CC_ABORT_SESSION 274 | |
| 1532 #define CC_SESSION_TERMINATION 275 | |
| 1533 #define CC_DEVICE_WATCHDOG 280 | |
| 1534 #define CC_DISCONNECT_PEER 282 | |
| 1535 | |
| 1536 /* AVPs (Vendor 0) */ | |
| 87 | 1537 #define AC_USER_NAME 1 |
| 0 | 1538 #define AC_PROXY_STATE 33 |
| 1539 #define AC_HOST_IP_ADDRESS 257 | |
| 1540 #define AC_AUTH_APPLICATION_ID 258 | |
| 1541 #define AC_ACCT_APPLICATION_ID 259 | |
| 1542 #define AC_VENDOR_SPECIFIC_APPLICATION_ID 260 | |
| 1543 #define AC_REDIRECT_HOST_USAGE 261 | |
| 1544 #define AC_REDIRECT_MAX_CACHE_TIME 262 | |
| 1545 #define AC_SESSION_ID 263 | |
| 1546 #define AC_ORIGIN_HOST 264 | |
| 1547 #define AC_SUPPORTED_VENDOR_ID 265 | |
| 1548 #define AC_VENDOR_ID 266 | |
| 1549 #define AC_FIRMWARE_REVISION 267 | |
| 1550 #define AC_RESULT_CODE 268 | |
| 1551 #define AC_PRODUCT_NAME 269 | |
| 1552 #define AC_DISCONNECT_CAUSE 273 | |
| 1553 #define ACV_DC_REBOOTING 0 | |
| 1554 #define ACV_DC_BUSY 1 | |
| 1555 #define ACV_DC_NOT_FRIEND 2 | |
| 1556 #define AC_ORIGIN_STATE_ID 278 | |
| 1557 #define AC_FAILED_AVP 279 | |
| 1558 #define AC_PROXY_HOST 280 | |
| 1559 #define AC_ERROR_MESSAGE 281 | |
| 1560 #define AC_ROUTE_RECORD 282 | |
| 1561 #define AC_DESTINATION_REALM 283 | |
| 1562 #define AC_PROXY_INFO 284 | |
| 1563 #define AC_REDIRECT_HOST 292 | |
| 1564 #define AC_DESTINATION_HOST 293 | |
| 1565 #define AC_ERROR_REPORTING_HOST 294 | |
| 1566 #define AC_ORIGIN_REALM 296 | |
| 1567 #define AC_INBAND_SECURITY_ID 299 | |
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1568 #define ACV_ISI_NO_INBAND_SECURITY 0 |
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1569 #define ACV_ISI_TLS 1 |
| 0 | 1570 |
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1571 /* Error codes from Base protocol |
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1572 (reference: http://www.iana.org/assignments/aaa-parameters/aaa-parameters.xml#aaa-parameters-4) |
|
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Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1573 Note that currently, rfc3588bis-26 has some different values for some of these |
|
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Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1574 */ |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1575 #define ER_DIAMETER_MULTI_ROUND_AUTH 1001 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1576 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1577 #define ER_DIAMETER_SUCCESS 2001 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1578 #define ER_DIAMETER_LIMITED_SUCCESS 2002 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1579 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1580 #define ER_DIAMETER_COMMAND_UNSUPPORTED 3001 /* 5019 ? */ |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1581 #define ER_DIAMETER_UNABLE_TO_DELIVER 3002 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1582 #define ER_DIAMETER_REALM_NOT_SERVED 3003 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1583 #define ER_DIAMETER_TOO_BUSY 3004 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1584 #define ER_DIAMETER_LOOP_DETECTED 3005 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1585 #define ER_DIAMETER_REDIRECT_INDICATION 3006 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1586 #define ER_DIAMETER_APPLICATION_UNSUPPORTED 3007 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1587 #define ER_DIAMETER_INVALID_HDR_BITS 3008 /* 5020 ? */ |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1588 #define ER_DIAMETER_INVALID_AVP_BITS 3009 /* 5021 ? */ |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1589 #define ER_DIAMETER_UNKNOWN_PEER 3010 /* 5018 ? */ |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1590 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1591 #define ER_DIAMETER_AUTHENTICATION_REJECTED 4001 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1592 #define ER_DIAMETER_OUT_OF_SPACE 4002 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1593 #define ER_ELECTION_LOST 4003 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1594 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1595 #define ER_DIAMETER_AVP_UNSUPPORTED 5001 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1596 #define ER_DIAMETER_UNKNOWN_SESSION_ID 5002 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1597 #define ER_DIAMETER_AUTHORIZATION_REJECTED 5003 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1598 #define ER_DIAMETER_INVALID_AVP_VALUE 5004 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1599 #define ER_DIAMETER_MISSING_AVP 5005 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1600 #define ER_DIAMETER_RESOURCES_EXCEEDED 5006 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1601 #define ER_DIAMETER_CONTRADICTING_AVPS 5007 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1602 #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
|
1603 #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
|
1604 #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
|
1605 #define ER_DIAMETER_UNSUPPORTED_VERSION 5011 |
|
f0cb8f465763
Added standard Result-Code values in header.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
689
diff
changeset
|
1606 #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
|
1607 #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
|
1608 #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
|
1609 #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
|
1610 #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
|
1611 #define ER_DIAMETER_NO_COMMON_SECURITY 5017 |
| 0 | 1612 |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1613 |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1614 /*============================================================*/ |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1615 /* SESSIONS */ |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1616 /*============================================================*/ |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1617 |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1618 /* 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
|
1619 struct session_handler; |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1620 |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1621 /* 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
|
1622 struct session; |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1623 |
|
226
406f74f0789b
Few cosmetics changes
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
216
diff
changeset
|
1624 /* 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
|
1625 typedef void session_state; |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1626 |
|
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
|
1627 /* 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
|
1628 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
|
1629 |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1630 /* |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1631 * FUNCTION: fd_sess_handler_create |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1632 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1633 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1634 * 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
|
1635 * 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
|
1636 * 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
|
1637 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1638 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1639 * 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
|
1640 * 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
|
1641 * 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
|
1642 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1643 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1644 * 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
|
1645 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1646 * 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
|
1647 */ |
|
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1648 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
|
1649 /* 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
|
1650 #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
|
1651 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
|
1652 |
|
340
81821e9f6988
Fix issue on session cleanup callback parameters -- thanks Souheil for reporting.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
336
diff
changeset
|
1653 |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1654 /* |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1655 * FUNCTION: fd_sess_handler_destroy |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1656 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1657 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1658 * 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
|
1659 * 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
|
1660 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1661 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1662 * 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
|
1663 * 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
|
1664 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1665 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1666 * 0 : The handler was destroyed. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1667 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1668 * 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
|
1669 */ |
|
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
|
1670 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
|
1671 |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1672 |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1673 |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
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1
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|
1674 /* |
|
3
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|
1675 * FUNCTION: fd_sess_new |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
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|
1676 * |
|
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Progress; added session module; testsess to be completed
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parents:
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|
1677 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
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diff
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|
1678 * session : The location where the session object will be created upon success. |
|
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Large UNTESTED commit with the following changes:
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|
1679 * diamid : a Diameter Identity, or NULL. |
|
4ffbc9f1e922
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|
1680 * 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>
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|
1681 * opt : Additional string, or NULL. Usage is described bellow. |
|
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1682 * 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:
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|
1683 * |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1684 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1685 * 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
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|
1686 * 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
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|
1687 * diamId is a Diameter Identity. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1688 * 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
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parents:
2
diff
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|
1689 * 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
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|
1690 * 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
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|
1691 * |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1692 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1693 * 0 : The session is created. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1694 * 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
diff
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|
1695 * EALREADY : A session with the same name already exists (returned in *session) |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1696 * ENOMEM : Not enough memory to complete the operation |
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1697 */ |
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1698 int fd_sess_new ( struct session ** session, DiamId_t diamid, size_t diamidlen, uint8_t * opt, size_t optlen ); |
|
3
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parents:
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|
1699 |
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|
1700 /* |
|
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parents:
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1701 * FUNCTION: fd_sess_fromsid |
|
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parents:
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|
1702 * |
|
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Progress; added session module; testsess to be completed
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1703 * PARAMETERS: |
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706
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Sebastien Decugis <sdecugis@nict.go.jp>
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|
1704 * sid : pointer to a string containing a Session-Id (should be UTF-8). |
|
3
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parents:
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|
1705 * len : length of the sid string (which does not need to be '\0'-terminated) |
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1706 * session : On success, pointer to the session object created / retrieved. |
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653
34373acfbc6a
Added sample C++ file in _sample extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
649
diff
changeset
|
1707 * 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
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|
1708 * |
|
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1709 * DESCRIPTION: |
|
85
e5fcd672caff
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
83
diff
changeset
|
1710 * 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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|
1711 * id, a new object is silently created (equivalent to fd_sess_new with flag SESSION_NEW_FULL). |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1712 * |
|
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parents:
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|
1713 * RETURN VALUE: |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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1714 * 0 : The session parameter has been updated. |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1715 * 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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|
1716 * 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
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|
1717 */ |
|
706
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1718 int fd_sess_fromsid ( uint8_t * sid, size_t len, struct session ** session, int * isnew); |
|
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1719 |
|
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Progress; added session module; testsess to be completed
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parents:
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1720 /* |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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1721 * FUNCTION: fd_sess_getsid |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1722 * |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1723 * PARAMETERS: |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1724 * session : Pointer to a session object. |
|
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|
1725 * sid : On success, the location of the sid is stored here. |
|
2
d8ce06172629
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1
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|
1726 * |
|
3
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Sebastien Decugis <sdecugis@nict.go.jp>
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|
1727 * DESCRIPTION: |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1728 * Retrieve the session identifier (Session-Id) corresponding to a session object. |
|
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Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
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|
1729 * 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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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1730 * It may be used for example to set the value of an AVP. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1731 * Note that the sid string is not copied, just its reference... do not free it! |
|
2
d8ce06172629
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Sebastien Decugis <sdecugis@nict.go.jp>
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1
diff
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|
1732 * |
|
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1733 * RETURN VALUE: |
|
706
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1734 * 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
changeset
|
1735 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1736 */ |
|
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4ffbc9f1e922
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1737 int fd_sess_getsid ( struct session * session, os0_t * sid, size_t * sidlen ); |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1738 |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1739 /* |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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1740 * FUNCTION: fd_sess_settimeout |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1741 * |
|
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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|
1742 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1743 * session : The session for which to set the timeout. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1744 * 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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|
1745 * |
|
3
ef303f1078ab
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parents:
2
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|
1746 * DESCRIPTION: |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1747 * Set the lifetime for a given session object. This function may be |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1748 * called several times on the same object to update the timeout value. |
|
ef303f1078ab
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parents:
2
diff
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|
1749 * When the timeout date is reached, the cleanup handler of each |
|
ef303f1078ab
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parents:
2
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|
1750 * module that registered data with this session is called, then the |
|
ef303f1078ab
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parents:
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|
1751 * session is cleared. |
|
2
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1
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|
1752 * |
|
3
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|
1753 * There is a possible race condition between cleanup of the session |
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parents:
2
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|
1754 * and use of its data; applications should ensure that they are not |
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ef303f1078ab
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parents:
2
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|
1755 * using data from a session that is about to expire / expired. |
|
2
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1
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|
1756 * |
|
3
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1757 * RETURN VALUE: |
|
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1758 * 0 : The session timeout has been updated. |
|
ef303f1078ab
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|
1759 * EINVAL : A parameter is invalid. |
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ef303f1078ab
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2
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|
1760 */ |
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|
1761 int fd_sess_settimeout( struct session * session, const struct timespec * timeout ); |
|
ef303f1078ab
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1762 |
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ef303f1078ab
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1763 /* |
|
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1764 * FUNCTION: fd_sess_destroy |
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ef303f1078ab
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1765 * |
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1766 * PARAMETERS: |
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1767 * session : Pointer to a session object. |
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1768 * |
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1769 * DESCRIPTION: |
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1770 * Destroys all associated states of a session, if any. |
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3
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1771 * Equivalent to a session timeout expired, but the effect is immediate. |
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1772 * The session itself is marked as deleted, and will be freed when it is not referenced |
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1773 * by any message anymore. |
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3
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1774 * |
|
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1775 * RETURN VALUE: |
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ef303f1078ab
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1776 * 0 : The session no longer exists. |
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diff
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|
1777 * EINVAL : A parameter is invalid. |
|
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Progress; added session module; testsess to be completed
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parents:
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diff
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|
1778 */ |
|
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parents:
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diff
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|
1779 int fd_sess_destroy ( struct session ** session ); |
|
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Progress; added session module; testsess to be completed
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parents:
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|
1780 |
|
6
b0d377c79d80
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parents:
5
diff
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|
1781 /* |
|
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Progress on dispatch API spec; added fd_sess_reclaim function and test
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5
diff
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|
1782 * FUNCTION: fd_sess_reclaim |
|
b0d377c79d80
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5
diff
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|
1783 * |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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diff
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|
1784 * PARAMETERS: |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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diff
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|
1785 * session : Pointer to a session object. |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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diff
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|
1786 * |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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parents:
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diff
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|
1787 * DESCRIPTION: |
|
706
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1788 * Equivalent to fd_sess_destroy, only if no session_state is associated with the session. |
|
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Large UNTESTED commit with the following changes:
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1789 * Otherwise, this function has no effect (except that it sets *session to NULL). |
|
6
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diff
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|
1790 * |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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|
1791 * RETURN VALUE: |
|
706
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1792 * 0 : The session was reclaimed. |
|
6
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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parents:
5
diff
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|
1793 * EINVAL : A parameter is invalid. |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
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|
1794 */ |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
1795 int fd_sess_reclaim ( struct session ** session ); |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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parents:
5
diff
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|
1796 |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1797 |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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|
1798 |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1799 |
|
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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|
1800 /* |
|
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parents:
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1801 * FUNCTION: fd_sess_state_store |
|
2
d8ce06172629
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parents:
1
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1802 * |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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1803 * PARAMETERS: |
|
ef303f1078ab
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parents:
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1804 * handler : The handler with which the state is registered. |
|
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1805 * session : The session object with which the state is registered. |
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Progress; added session module; testsess to be completed
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parents:
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1806 * state : An application state (opaque data) to store with the session. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
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1807 * |
|
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parents:
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|
1808 * DESCRIPTION: |
|
ef303f1078ab
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parents:
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|
1809 * Stores an application state with a session. This state can later be retrieved |
|
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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1810 * with fd_sess_state_retrieve, or implicitly in the cleanup handler when the session |
|
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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1811 * is destroyed. |
|
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Progress; added session module; testsess to be completed
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1812 * |
|
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1813 * RETURN VALUE: |
|
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parents:
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1814 * 0 : The state has been stored. |
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1815 * EINVAL : A parameter is invalid. |
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Progress; added session module; testsess to be completed
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parents:
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1816 * EALREADY : Data was already associated with this session and client. |
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ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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|
1817 * 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
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|
1818 */ |
|
6
b0d377c79d80
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parents:
5
diff
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|
1819 int fd_sess_state_store_internal ( struct session_handler * handler, struct session * session, session_state ** state ); |
|
5
c2d2729e3603
Completed new session module tests; some bugs fixed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
3
diff
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|
1820 #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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|
1821 fd_sess_state_store_internal( (_handler), (_session), (void *)(_state) ) |
|
3
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Progress; added session module; testsess to be completed
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1822 |
|
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Progress; added session module; testsess to be completed
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1823 /* |
|
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1824 * FUNCTION: fd_sess_state_retrieve |
|
2
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1825 * |
|
3
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Progress; added session module; testsess to be completed
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parents:
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1826 * PARAMETERS: |
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Progress; added session module; testsess to be completed
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parents:
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1827 * handler : The handler with which the state was registered. |
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1828 * session : The session object with which the state was registered. |
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1829 * state : Location where the state must be saved if it is found. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1830 * |
|
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1831 * DESCRIPTION: |
|
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1832 * Retrieves a state saved by fd_sess_state_store. |
|
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|
1833 * After this function has been called, the state is no longer associated with |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1834 * the session. A new call to fd_sess_state_store must be performed in order to |
|
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1835 * store again the data with the session. |
|
2
d8ce06172629
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parents:
1
diff
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|
1836 * |
|
3
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1837 * RETURN VALUE: |
|
ef303f1078ab
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parents:
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|
1838 * 0 : *state is updated (NULL or points to the state if it was found). |
|
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Progress; added session module; testsess to be completed
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parents:
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|
1839 * 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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|
1840 */ |
|
620
bc7328e600f0
Removed the OUTPUT specification for SWIG, too complex
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
618
diff
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|
1841 int fd_sess_state_retrieve_internal ( struct session_handler * handler, struct session * session, session_state ** state ); |
|
5
c2d2729e3603
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
3
diff
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|
1842 #define fd_sess_state_retrieve( _handler, _session, _state ) \ |
|
6
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Progress on dispatch API spec; added fd_sess_reclaim function and test
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5
diff
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|
1843 fd_sess_state_retrieve_internal( (_handler), (_session), (void *)(_state) ) |
|
2
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|
1844 |
|
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1
diff
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|
1845 |
|
3
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Progress; added session module; testsess to be completed
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parents:
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diff
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|
1846 /* For debug */ |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1847 void fd_sess_dump(int level, struct session * session); |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1848 void fd_sess_dump_hdl(int level, struct session_handler * handler); |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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1849 |
|
2
d8ce06172629
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parents:
1
diff
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|
1850 /*============================================================*/ |
|
83
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diff
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|
1851 /* ROUTING */ |
|
c662d3eb6ff6
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|
1852 /*============================================================*/ |
|
c662d3eb6ff6
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|
1853 |
|
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diff
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|
1854 /* The following functions are helpers for the routing module. |
|
168
6db078b955e3
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diff
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|
1855 The routing data is stored in the message itself. */ |
|
83
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1856 |
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diff
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|
1857 /* Structure that contains the routing data for a message */ |
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diff
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|
1858 struct rt_data; |
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|
1859 |
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diff
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|
1860 /* Following functions are helpers to create the routing data of a message */ |
|
620
bc7328e600f0
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parents:
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|
1861 int fd_rtd_init(struct rt_data ** rtd); |
|
83
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1862 void fd_rtd_free(struct rt_data ** rtd); |
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1863 |
|
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1864 /* Add a peer to the candidates list. */ |
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1865 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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83
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1866 |
|
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1867 /* Remove a peer from the candidates (if it is found). The search is case-insensitive. */ |
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1868 void fd_rtd_candidate_del(struct rt_data * rtd, uint8_t * id, size_t idsz); |
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83
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1869 |
|
88
9e2db1647d6f
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parents:
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|
1870 /* Extract the list of valid candidates, and initialize their scores to 0 */ |
|
620
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1871 void fd_rtd_candidate_extract(struct rt_data * rtd, struct fd_list ** candidates, int ini_score); |
|
88
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parents:
87
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1872 |
|
83
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1873 /* 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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706
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1874 int fd_rtd_error_add(struct rt_data * rtd, DiamId_t sentto, size_t senttolen, uint8_t * origin, size_t originsz, uint32_t rcode); |
|
83
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1875 |
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1876 /* The extracted list items have the following structure: */ |
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1877 struct rtd_candidate { |
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1878 struct fd_list chain; /* link in the list returned by the previous fct */ |
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1879 DiamId_t diamid; /* the diameter Id of the peer */ |
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1880 size_t diamidlen; /* cached size of the diamid string */ |
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1881 DiamId_t realm; /* the diameter realm of the peer */ |
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1882 size_t realmlen; /* cached size of realm */ |
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1883 int score; /* the current routing score for this peer, see fd_rt_out_register definition for details */ |
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1884 }; |
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1885 |
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1886 /* Reorder the list of peers by score */ |
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1887 int fd_rtd_candidate_reorder(struct fd_list * candidates); |
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1888 |
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1889 /* 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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1890 /* Beware that this could lead to routing loops */ |
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1891 |
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1892 /*============================================================*/ |
| 0 | 1893 /* MESSAGES */ |
| 1894 /*============================================================*/ | |
| 1895 | |
| 1896 /* The following types are opaque */ | |
| 1897 struct msg; /* A message: command with children AVPs (possibly grand children) */ | |
| 1898 struct avp; /* AVP object */ | |
| 1899 | |
| 1900 /* Some details about chaining: | |
| 1901 * | |
| 1902 * A message is made of a header ( msg ) and 0 or more AVPs ( avp ). | |
| 1903 * The structure is a kind of tree, where some AVPs (grouped AVPs) can contain other AVPs. | |
| 1904 * Exemple: | |
| 1905 * msg | |
| 1906 * |-avp | |
| 1907 * |-gavp | |
| 1908 * | |-avp | |
| 1909 * | |-avp | |
| 1910 * | \-avp | |
| 1911 * |-avp | |
| 1912 * \-avp | |
| 1913 * | |
| 1914 */ | |
| 1915 | |
| 1916 /* The following type is used to point to either a msg or an AVP */ | |
| 1917 typedef void msg_or_avp; | |
| 1918 | |
| 1919 /* The Diameter protocol version */ | |
| 1920 #define DIAMETER_VERSION 1 | |
| 1921 | |
| 1922 /* In the two following types, some fields are marked (READONLY). | |
| 1923 * This means that the content of these fields will be overwritten by the daemon so modifying it is useless. | |
| 1924 */ | |
| 1925 | |
| 1926 /* The following structure represents the header of a message. All data is in host byte order. */ | |
| 1927 struct msg_hdr { | |
| 1928 uint8_t msg_version; /* (READONLY) Version of Diameter: must be DIAMETER_VERSION. */ | |
| 1929 uint32_t msg_length; /* (READONLY)(3 bytes) indicates the length of the message */ | |
| 1930 uint8_t msg_flags; /* Message flags: CMD_FLAG_* */ | |
| 1931 command_code_t msg_code; /* (3 bytes) the command-code. See dictionary-api.h for more detail */ | |
| 1932 application_id_t msg_appl; /* The application issuing this message */ | |
| 1933 uint32_t msg_hbhid; /* The Hop-by-Hop identifier of the message */ | |
| 1934 uint32_t msg_eteid; /* The End-to-End identifier of the message */ | |
| 1935 }; | |
| 1936 | |
| 1937 /* The following structure represents the visible content of an AVP. All data is in host byte order. */ | |
| 1938 struct avp_hdr { | |
| 1939 avp_code_t avp_code; /* the AVP Code */ | |
| 1940 uint8_t avp_flags; /* AVP_FLAG_* flags */ | |
| 1941 uint32_t avp_len; /* (READONLY)(Only 3 bytes are used) the length of the AVP as described in the RFC */ | |
| 1942 vendor_id_t avp_vendor; /* Only used if AVP_FLAG_VENDOR is present */ | |
| 1943 union avp_value *avp_value; /* pointer to the value of the AVP. NULL means that the value is not set / not understood. | |
| 1944 One should not directly change this value. Use the msg_avp_setvalue function instead. | |
| 1945 The content of the pointed structure can be changed directly, with this restriction: | |
| 1946 if the AVP is an OctetString, and you change the value of the pointer avp_value->os.data, then | |
| 1947 you must call free() on the previous value, and the new one must be free()-able. | |
| 1948 */ | |
| 1949 }; | |
| 1950 | |
| 1951 /* The following enum is used to browse inside message hierarchy (msg, gavp, avp) */ | |
| 1952 enum msg_brw_dir { | |
| 1953 MSG_BRW_NEXT = 1, /* Get the next element at the same level, or NULL if this is the last element. */ | |
| 1954 MSG_BRW_PREV, /* Get the previous element at the same level, or NULL if this is the first element. */ | |
| 1955 MSG_BRW_FIRST_CHILD, /* Get the first child AVP of this element, if any. */ | |
| 1956 MSG_BRW_LAST_CHILD, /* Get the last child AVP of this element, if any. */ | |
| 1957 MSG_BRW_PARENT, /* Get the parent element of this element, if any. Only the msg_t object has no parent. */ | |
| 1958 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. */ | |
| 1959 }; | |
| 1960 | |
| 1961 /* Some flags used in the functions bellow */ | |
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1962 #define AVPFL_SET_BLANK_VALUE 0x01 /* When creating an AVP, initialize its value to a blank area */ |
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1963 #define AVPFL_MAX AVPFL_SET_BLANK_VALUE /* The biggest valid flag value */ |
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1964 |
| 0 | 1965 #define MSGFL_ALLOC_ETEID 0x01 /* When creating a message, a new end-to-end ID is allocated and set in the message */ |
| 1966 #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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1967 #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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1968 #define MSGFL_MAX MSGFL_ANSW_NOSID /* The biggest valid flag value */ |
| 0 | 1969 |
| 1970 /**************************************************/ | |
| 1971 /* Message creation, manipulation, disposal */ | |
| 1972 /**************************************************/ | |
| 1973 /* | |
| 1974 * FUNCTION: fd_msg_avp_new | |
| 1975 * | |
| 1976 * PARAMETERS: | |
| 1977 * model : Pointer to a DICT_AVP dictionary object describing the avp to create, or NULL. | |
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1978 * flags : Flags to use in creation (AVPFL_*). |
| 0 | 1979 * avp : Upon success, pointer to the new avp is stored here. |
| 1980 * | |
| 1981 * DESCRIPTION: | |
| 1982 * Create a new AVP instance. | |
| 1983 * | |
| 1984 * RETURN VALUE: | |
| 1985 * 0 : The AVP is created. | |
| 1986 * EINVAL : A parameter is invalid. | |
| 1987 * (other standard errors may be returned, too, with their standard meaning. Example: | |
| 1988 * ENOMEM : Memory allocation for the new avp failed.) | |
| 1989 */ | |
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1990 int fd_msg_avp_new ( struct dict_object * model, int flags, struct avp ** avp ); |
| 0 | 1991 |
| 1992 /* | |
| 1993 * FUNCTION: fd_msg_new | |
| 1994 * | |
| 1995 * PARAMETERS: | |
| 1996 * model : Pointer to a DICT_COMMAND dictionary object describing the message to create, or NULL. | |
| 1997 * flags : combination of MSGFL_* flags. | |
| 1998 * msg : Upon success, pointer to the new message is stored here. | |
| 1999 * | |
| 2000 * DESCRIPTION: | |
| 2001 * Create a new empty Diameter message. | |
| 2002 * | |
| 2003 * RETURN VALUE: | |
| 2004 * 0 : The message is created. | |
| 2005 * EINVAL : A parameter is invalid. | |
| 2006 * (other standard errors may be returned, too, with their standard meaning. Example: | |
| 2007 * ENOMEM : Memory allocation for the new message failed.) | |
| 2008 */ | |
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2009 int fd_msg_new ( struct dict_object * model, int flags, struct msg ** msg ); |
| 0 | 2010 |
| 2011 /* | |
| 2012 * FUNCTION: msg_new_answer_from_req | |
| 2013 * | |
| 2014 * PARAMETERS: | |
| 2015 * dict : Pointer to the dictionary containing the model of the query. | |
| 2016 * msg : The location of the query on function call. Updated by the location of answer message on return. | |
| 2017 * flag : Pass MSGFL_ANSW_ERROR to indicate if the answer is an error message (will set the 'E' bit) | |
| 2018 * | |
| 2019 * DESCRIPTION: | |
| 2020 * This function creates the empty answer message corresponding to a request. | |
| 2021 * The header is set properly (R flag, ccode, appid, hbhid, eteid) | |
| 2022 * The Session-Id AVP is copied if present. | |
| 2023 * The calling code should usually call fd_msg_rescode_set function on the answer. | |
| 2024 * Upon return, the original query may be retrieved by calling fd_msg_answ_getq on the message. | |
| 2025 * | |
| 2026 * RETURN VALUE: | |
| 2027 * 0 : Operation complete. | |
| 2028 * !0 : an error occurred. | |
| 2029 */ | |
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2030 int fd_msg_new_answer_from_req ( struct dictionary * dict, struct msg ** msg, int flag ); |
| 0 | 2031 |
| 2032 /* | |
| 2033 * FUNCTION: fd_msg_browse | |
| 2034 * | |
| 2035 * PARAMETERS: | |
| 2036 * reference : Pointer to a struct msg or struct avp. | |
| 2037 * dir : Direction for browsing | |
| 2038 * found : If not NULL, updated with the element that has been found, if any, or NULL if no element was found / an error occurred. | |
| 2039 * 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. | |
| 2040 * | |
| 2041 * DESCRIPTION: | |
| 2042 * Explore the content of a message object (hierarchy). If "found" is null, only error checking is performed. | |
| 2043 * If "depth" is provided, it is updated as follow on successful function return: | |
| 2044 * - not modified for MSG_BRW_NEXT and MSG_BRW_PREV. | |
| 2045 * - *depth = *depth + 1 for MSG_BRW_FIRST_CHILD and MSG_BRW_LAST_CHILD. | |
| 2046 * - *depth = *depth - 1 for MSG_BRW_PARENT. | |
| 2047 * - *depth = *depth + X for MSG_BRW_WALK, with X between 1 (returned the 1st child) and -N (returned the Nth parent's next). | |
| 2048 * | |
| 2049 * RETURN VALUE: | |
| 2050 * 0 : found has been updated (if non NULL). | |
| 2051 * EINVAL : A parameter is invalid. | |
| 2052 * ENOENT : No element has been found where requested, and "found" was NULL (otherwise, *found is set to NULL and 0 is returned). | |
| 2053 */ | |
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2054 int fd_msg_browse_internal ( msg_or_avp * reference, enum msg_brw_dir dir, msg_or_avp ** found, int * depth ); |
| 0 | 2055 /* Macro to avoid having to cast the third parameter everywhere */ |
| 2056 #define fd_msg_browse( ref, dir, found, depth ) \ | |
| 2057 fd_msg_browse_internal( (ref), (dir), (void *)(found), (depth) ) | |
| 2058 | |
| 2059 | |
| 2060 /* | |
| 2061 * FUNCTION: fd_msg_avp_add | |
| 2062 * | |
| 2063 * PARAMETERS: | |
| 2064 * reference : Pointer to a valid msg or avp. | |
| 2065 * dir : location where the new AVP should be inserted, relative to the reference. MSG_BRW_PARENT and MSG_BRW_WALK are not valid. | |
| 2066 * avp : pointer to the AVP object that must be inserted. | |
| 2067 * | |
| 2068 * DESCRIPTION: | |
| 2069 * Adds an AVP into an object that can contain it: grouped AVP or message. | |
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2070 * Note that the added AVP will be freed at the same time as the object it is added to, |
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2071 * so it should not be freed after the call to this function. |
| 0 | 2072 * |
| 2073 * RETURN VALUE: | |
| 2074 * 0 : The AVP has been added. | |
| 2075 * EINVAL : A parameter is invalid. | |
| 2076 */ | |
| 2077 int fd_msg_avp_add ( msg_or_avp * reference, enum msg_brw_dir dir, struct avp *avp); | |
| 2078 | |
| 2079 /* | |
| 2080 * FUNCTION: fd_msg_search_avp | |
| 2081 * | |
| 2082 * PARAMETERS: | |
| 2083 * msg : The message structure in which to search the AVP. | |
| 2084 * what : The dictionary model of the AVP to search. | |
| 2085 * avp : location where the AVP reference is stored if found. | |
| 2086 * | |
| 2087 * DESCRIPTION: | |
| 2088 * Search the first top-level AVP of a given model inside a message. | |
| 2089 * Note: only the first instance of the AVP is returned by this function. | |
| 2090 * Note: only top-level AVPs are searched, not inside grouped AVPs. | |
| 2091 * Use msg_browse if you need more advanced research features. | |
| 2092 * | |
| 2093 * RETURN VALUE: | |
| 2094 * 0 : The AVP has been found. | |
| 2095 * EINVAL : A parameter is invalid. | |
| 2096 * ENOENT : No AVP has been found, and "avp" was NULL (otherwise, *avp is set to NULL and 0 returned). | |
| 2097 */ | |
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2098 int fd_msg_search_avp ( struct msg * msg, struct dict_object * what, struct avp ** avp ); |
| 0 | 2099 |
| 2100 /* | |
| 2101 * FUNCTION: fd_msg_free | |
| 2102 * | |
| 2103 * PARAMETERS: | |
| 2104 * object : pointer to the message or AVP object that must be unlinked and freed. | |
| 2105 * | |
| 2106 * DESCRIPTION: | |
| 2107 * Unlink and free a message or AVP object and its children. | |
| 2108 * If the object is an AVP linked into a message, the AVP is removed before being freed. | |
| 2109 * | |
| 2110 * RETURN VALUE: | |
| 2111 * 0 : The message has been freed. | |
| 2112 * EINVAL : A parameter is invalid. | |
| 2113 */ | |
| 2114 int fd_msg_free ( msg_or_avp * object ); | |
| 2115 | |
| 2116 /***************************************/ | |
| 2117 /* Dump functions */ | |
| 2118 /***************************************/ | |
| 2119 /* | |
| 2120 * FUNCTION: fd_msg_dump_* | |
| 2121 * | |
| 2122 * PARAMETERS: | |
| 2123 * level : the log level (INFO, FULL, ...) at which the object is dumped | |
| 2124 * obj : A msg or avp object. | |
| 2125 * | |
| 2126 * DESCRIPTION: | |
| 2127 * These functions dump the content of a message to the debug log | |
| 2128 * either recursively or only the object itself. | |
| 2129 * | |
| 2130 * RETURN VALUE: | |
| 2131 * - | |
| 2132 */ | |
| 2133 void fd_msg_dump_walk ( int level, msg_or_avp *obj ); | |
| 2134 void fd_msg_dump_one ( int level, msg_or_avp *obj ); | |
| 2135 | |
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2136 /* |
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2137 * FUNCTION: fd_msg_log |
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2138 * |
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2139 * PARAMETERS: |
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2140 * cause : Context for calling this function. This allows the log facility to be configured precisely. |
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2141 * msg : The message to log. |
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2142 * prefix_format: Printf-style format message that is printed ahead of the message. Might be reason for drop or so. |
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2143 * |
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2144 * DESCRIPTION: |
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2145 * This function is called when a Diameter message reaches some particular points in the fD framework. |
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2146 * The actual effect is configurable: log in a separate file, dump in the debug log, etc. |
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2147 * |
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2148 * RETURN VALUE: |
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2149 * - |
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2150 */ |
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2151 enum fd_msg_log_cause { |
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2152 FD_MSG_LOG_DROPPED = 0, /* message has been dropped by the framework */ |
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2153 FD_MSG_LOG_RECEIVED, /* message received from the network */ |
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2154 FD_MSG_LOG_SENT, /* message sent to another peer */ |
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2155 FD_MSG_LOG_NODELIVER /* message could not be delivered to any peer */ |
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2156 }; |
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2157 #define FD_MSG_LOG_MAX FD_MSG_LOG_NODELIVER |
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2158 void fd_msg_log( enum fd_msg_log_cause cause, struct msg * msg, const char * prefix_format, ... ); |
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2159 |
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2160 /* configure the msg_log facility */ |
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2161 enum fd_msg_log_method { |
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2162 FD_MSG_LOGTO_DEBUGONLY = 0, /* Simply log the message with other debug information, at the INFO level. This is default */ |
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2163 FD_MSG_LOGTO_FILE, /* Messages are dumped in a single file, defined in arg */ |
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2164 FD_MSG_LOGTO_DIR /* Messages are dumped in different files within one directory defined in arg. */ |
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2165 }; |
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2166 int fd_msg_log_config(enum fd_msg_log_cause cause, enum fd_msg_log_method method, const char * arg); |
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2167 void fd_msg_log_init(struct dictionary *dict); |
| 0 | 2168 |
| 2169 /*********************************************/ | |
| 2170 /* Message metadata management functions */ | |
| 2171 /*********************************************/ | |
| 2172 /* | |
| 2173 * FUNCTION: fd_msg_model | |
| 2174 * | |
| 2175 * PARAMETERS: | |
| 2176 * reference : Pointer to a valid msg or avp. | |
| 2177 * model : on success, pointer to the dictionary model of this command or AVP. NULL if the model is unknown. | |
| 2178 * | |
| 2179 * DESCRIPTION: | |
| 2180 * Retrieve the dictionary object describing this message or avp. If the object is unknown or the fd_msg_parse_dict has not been called, | |
| 2181 * *model is set to NULL. | |
| 2182 * | |
| 2183 * RETURN VALUE: | |
| 2184 * 0 : The model has been set. | |
| 2185 * EINVAL : A parameter is invalid. | |
| 2186 */ | |
|
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2187 int fd_msg_model ( msg_or_avp * reference, struct dict_object ** model ); |
| 0 | 2188 |
| 2189 /* | |
| 2190 * FUNCTION: fd_msg_hdr | |
| 2191 * | |
| 2192 * PARAMETERS: | |
| 2193 * msg : Pointer to a valid message object. | |
| 2194 * pdata : Upon success, pointer to the msg_hdr structure of this message. The fields may be modified. | |
| 2195 * | |
| 2196 * DESCRIPTION: | |
| 2197 * Retrieve location of modifiable section of a message. | |
| 2198 * | |
| 2199 * RETURN VALUE: | |
| 2200 * 0 : The location has been written. | |
| 2201 * EINVAL : A parameter is invalid. | |
| 2202 */ | |
|
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2203 int fd_msg_hdr ( struct msg *msg, struct msg_hdr ** pdata ); |
| 0 | 2204 |
| 2205 /* | |
| 2206 * FUNCTION: fd_msg_avp_hdr | |
| 2207 * | |
| 2208 * PARAMETERS: | |
| 2209 * avp : Pointer to a valid avp object. | |
| 2210 * pdata : Upon success, pointer to the avp_hdr structure of this avp. The fields may be modified. | |
| 2211 * | |
| 2212 * DESCRIPTION: | |
| 2213 * Retrieve location of modifiable data of an avp. | |
| 2214 * | |
| 2215 * RETURN VALUE: | |
| 2216 * 0 : The location has been written. | |
| 2217 * EINVAL : A parameter is invalid. | |
| 2218 */ | |
|
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2219 int fd_msg_avp_hdr ( struct avp *avp, struct avp_hdr ** pdata ); |
| 0 | 2220 |
| 2221 /* | |
| 2222 * FUNCTION: fd_msg_answ_associate, fd_msg_answ_getq, fd_msg_answ_detach | |
| 2223 * | |
| 2224 * PARAMETERS: | |
| 2225 * answer : the received answer message | |
| 2226 * query : the corresponding query that had been sent | |
| 2227 * | |
| 2228 * DESCRIPTION: | |
| 2229 * fd_msg_answ_associate associates a query msg with the received answer. | |
| 2230 * Query is retrieved with fd_msg_answ_getq. | |
| 2231 * If answer message is freed, the query is also freed. | |
| 2232 * If the msg_answ_detach function is called, the association is removed. | |
| 2233 * This is meant to be called from the daemon only. | |
| 2234 * | |
| 2235 * RETURN VALUE: | |
| 2236 * 0 : ok | |
| 2237 * EINVAL: a parameter is invalid | |
| 2238 */ | |
| 2239 int fd_msg_answ_associate( struct msg * answer, struct msg * query ); | |
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2240 int fd_msg_answ_getq ( struct msg * answer, struct msg ** query ); |
| 0 | 2241 int fd_msg_answ_detach ( struct msg * answer ); |
| 2242 | |
| 2243 /* | |
| 2244 * FUNCTION: fd_msg_anscb_associate, fd_msg_anscb_get | |
| 2245 * | |
| 2246 * PARAMETERS: | |
| 2247 * msg : the answer message | |
| 2248 * anscb : the callback to associate with the message | |
| 2249 * data : the data to pass to the callback | |
|
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2250 * timeout : (optional, use NULL if no timeout) a timeout associated with calling the cb. |
| 0 | 2251 * |
| 2252 * DESCRIPTION: | |
| 2253 * Associate or retrieve a callback with an answer message. | |
| 2254 * This is meant to be called from the daemon only. | |
| 2255 * | |
| 2256 * RETURN VALUE: | |
| 2257 * 0 : ok | |
| 2258 * EINVAL: a parameter is invalid | |
| 2259 */ | |
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2260 int fd_msg_anscb_associate( struct msg * msg, void ( *anscb)(void *, struct msg **), void * data, const struct timespec *timeout ); |
| 0 | 2261 int fd_msg_anscb_get ( struct msg * msg, void (**anscb)(void *, struct msg **), void ** data ); |
|
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2262 struct timespec *fd_msg_anscb_gettimeout( struct msg * msg ); /* returns NULL or a valid non-0 timespec */ |
| 0 | 2263 |
| 2264 /* | |
| 2265 * FUNCTION: fd_msg_rt_associate, fd_msg_rt_get | |
| 2266 * | |
| 2267 * PARAMETERS: | |
| 2268 * msg : the query message to be sent | |
| 2269 * list : the ordered list of possible next-peers | |
| 2270 * | |
| 2271 * DESCRIPTION: | |
| 2272 * Associate a routing list with a query, and retrieve it. | |
| 2273 * If the message is freed, the list is also freed. | |
| 2274 * | |
| 2275 * RETURN VALUE: | |
| 2276 * 0 : ok | |
| 2277 * EINVAL: a parameter is invalid | |
| 2278 */ | |
|
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2279 int fd_msg_rt_associate( struct msg * msg, struct rt_data ** rtd ); |
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2280 int fd_msg_rt_get ( struct msg * msg, struct rt_data ** rtd ); |
| 0 | 2281 |
| 2282 /* | |
| 2283 * FUNCTION: fd_msg_is_routable | |
| 2284 * | |
| 2285 * PARAMETERS: | |
| 2286 * msg : A msg object. | |
| 2287 * | |
| 2288 * DESCRIPTION: | |
| 2289 * This function returns a boolean telling if a given message is routable in the Diameter network, | |
| 2290 * or if it is a local link message only (ex: CER/CEA, DWR/DWA, ...). | |
| 2291 * | |
| 2292 * RETURN VALUE: | |
| 2293 * 0 : The message is not routable / an error occurred. | |
| 2294 * 1 : The message is routable. | |
| 2295 */ | |
| 2296 int fd_msg_is_routable ( struct msg * msg ); | |
| 2297 | |
| 2298 /* | |
| 2299 * FUNCTION: fd_msg_source_(g/s)et | |
| 2300 * | |
| 2301 * PARAMETERS: | |
| 2302 * msg : A msg object. | |
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2303 * diamid,len : The diameter id of the peer from which this message was received. |
| 0 | 2304 * add_rr : if true, a Route-Record AVP is added to the message with content diamid. In that case, dict must be supplied. |
| 2305 * dict : a dictionary with definition of Route-Record AVP (if add_rr is true) | |
| 2306 * | |
| 2307 * DESCRIPTION: | |
| 2308 * Store or retrieve the diameted id of the peer from which this message was received. | |
| 2309 * Will be used for example by the routing module to add the Route-Record AVP in forwarded requests, | |
| 2310 * or to direct answers to the appropriate peer. | |
| 2311 * | |
| 2312 * RETURN VALUE: | |
| 2313 * 0 : Operation complete. | |
| 2314 * !0 : an error occurred. | |
| 2315 */ | |
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2316 int fd_msg_source_set( struct msg * msg, DiamId_t diamid, size_t diamidlen, int add_rr, struct dictionary * dict ); |
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2317 int fd_msg_source_get( struct msg * msg, DiamId_t *diamid, size_t * diamidlen ); |
| 0 | 2318 |
| 2319 /* | |
| 2320 * FUNCTION: fd_msg_eteid_get | |
| 2321 * | |
| 2322 * PARAMETERS: | |
| 2323 * - | |
| 2324 * | |
| 2325 * DESCRIPTION: | |
| 2326 * Get a new unique end-to-end id value for the local peer. | |
| 2327 * | |
| 2328 * RETURN VALUE: | |
| 2329 * The new assigned value. No error code is defined. | |
| 2330 */ | |
| 2331 uint32_t fd_msg_eteid_get ( void ); | |
| 2332 | |
| 2333 | |
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2334 /* |
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2335 * FUNCTION: fd_msg_sess_get |
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2336 * |
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2337 * PARAMETERS: |
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2338 * dict : the dictionary that contains the Session-Id AVP definition |
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2339 * msg : A valid message. |
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2340 * session : Location to store the session pointer when retrieved. |
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2341 * isnew : Indicates if the session has been created. |
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2342 * |
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2343 * DESCRIPTION: |
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2344 * This function retrieves or creates the session object corresponding to a message. |
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2345 * If the message does not contain a Session-Id AVP, *session == NULL on return. |
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2346 * Note that the Session-Id AVP must never be modified after created in a message. |
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2347 * |
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2348 * RETURN VALUE: |
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2349 * 0 : success |
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2350 * !0 : standard error code. |
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2351 */ |
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2352 int fd_msg_sess_get(struct dictionary * dict, struct msg * msg, struct session ** session, int * isnew); |
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2353 |
| 0 | 2354 /***************************************/ |
| 2355 /* Manage AVP values */ | |
| 2356 /***************************************/ | |
| 2357 | |
| 2358 /* | |
| 2359 * FUNCTION: fd_msg_avp_setvalue | |
| 2360 * | |
| 2361 * PARAMETERS: | |
| 2362 * avp : Pointer to a valid avp object with a NULL avp_value pointer. The model must be known. | |
| 2363 * value : pointer to an avp_value. The content will be COPIED into the internal storage area. | |
| 2364 * If data type is an octetstring, the data is also copied. | |
| 2365 * If value is a NULL pointer, the previous data is erased and value is unset in the AVP. | |
| 2366 * | |
| 2367 * DESCRIPTION: | |
| 2368 * Initialize the avp_value field of an AVP header. | |
| 2369 * | |
| 2370 * RETURN VALUE: | |
| 2371 * 0 : The avp_value pointer has been set. | |
| 2372 * EINVAL : A parameter is invalid. | |
| 2373 */ | |
| 2374 int fd_msg_avp_setvalue ( struct avp *avp, union avp_value *value ); | |
| 2375 | |
| 2376 /* | |
| 2377 * FUNCTION: fd_msg_avp_value_encode | |
| 2378 * | |
| 2379 * PARAMETERS: | |
| 2380 * avp : Pointer to a valid avp object with a NULL avp_value. The model must be known. | |
| 2381 * data : Pointer to the data that must be encoded as AVP value and stored in the AVP. | |
| 2382 * This is only valid for AVPs of derived type for which type_data_encode callback is set. (ex: Address type) | |
| 2383 * | |
| 2384 * DESCRIPTION: | |
| 2385 * Initialize the avp_value field of an AVP object from formatted data, using the AVP's type "type_data_encode" callback. | |
| 2386 * | |
| 2387 * RETURN VALUE: | |
| 2388 * 0 : The avp_value has been set. | |
| 2389 * EINVAL : A parameter is invalid. | |
| 2390 * ENOTSUP : There is no appropriate callback registered with this AVP's type. | |
| 2391 */ | |
| 2392 int fd_msg_avp_value_encode ( void *data, struct avp *avp ); | |
| 2393 /* | |
| 2394 * FUNCTION: fd_msg_avp_value_interpret | |
| 2395 * | |
| 2396 * PARAMETERS: | |
| 2397 * avp : Pointer to a valid avp object with a non-NULL avp_value value. | |
| 2398 * data : Upon success, formatted interpretation of the AVP value is stored here. | |
| 2399 * | |
| 2400 * DESCRIPTION: | |
| 2401 * Interpret the content of an AVP of Derived type and store the result in data pointer. The structure | |
| 2402 * of the data pointer is dependent on the AVP type. This function calls the "type_data_interpret" callback | |
| 2403 * of the type. | |
| 2404 * | |
| 2405 * RETURN VALUE: | |
| 2406 * 0 : The avp_value has been set. | |
| 2407 * EINVAL : A parameter is invalid. | |
| 2408 * ENOTSUP : There is no appropriate callback registered with this AVP's type. | |
| 2409 */ | |
| 2410 int fd_msg_avp_value_interpret ( struct avp *avp, void *data ); | |
| 2411 | |
| 2412 | |
| 2413 /***************************************/ | |
| 2414 /* Message parsing functions */ | |
| 2415 /***************************************/ | |
| 2416 | |
| 2417 /* | |
| 2418 * FUNCTION: fd_msg_bufferize | |
| 2419 * | |
| 2420 * PARAMETERS: | |
| 2421 * msg : A valid msg object. All AVPs must have a value set. | |
| 2422 * buffer : Upon success, this points to a buffer (malloc'd) containing the message ready for network transmission (or security transformations). | |
| 2423 * The buffer may be freed after use. | |
| 2424 * len : if not NULL, the size of the buffer is written here. In any case, this size is updated in the msg header. | |
| 2425 * | |
| 2426 * DESCRIPTION: | |
| 2427 * Renders a message in memory as a buffer that can be sent over the network to the next peer. | |
| 2428 * | |
| 2429 * RETURN VALUE: | |
| 2430 * 0 : The location has been written. | |
| 2431 * EINVAL : The buffer does not contain a valid Diameter message. | |
| 2432 * ENOMEM : Unable to allocate enough memory to create the buffer object. | |
| 2433 */ | |
|
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2434 int fd_msg_bufferize ( struct msg * msg, uint8_t ** buffer, size_t * len ); |
| 0 | 2435 |
| 2436 /* | |
| 2437 * FUNCTION: fd_msg_parse_buffer | |
| 2438 * | |
| 2439 * PARAMETERS: | |
| 2440 * buffer : Pointer to a buffer containing a message received from the network. | |
| 2441 * buflen : the size in bytes of the buffer. | |
| 2442 * msg : Upon success, this points to a valid msg object. No AVP value is resolved in this object, nor grouped AVP. | |
| 2443 * | |
| 2444 * DESCRIPTION: | |
| 2445 * This function parses a buffer an creates a msg object to represent the structure of the message. | |
| 2446 * Since no dictionary lookup is performed, the values of the AVPs are not interpreted. To interpret the values, | |
| 2447 * the returned message object must be passed to fd_msg_parse_dict function. | |
| 2448 * The buffer pointer is saved inside the message and will be freed when not needed anymore. | |
| 2449 * | |
| 2450 * RETURN VALUE: | |
| 2451 * 0 : The location has been written. | |
| 2452 * ENOMEM : Unable to allocate enough memory to create the msg object. | |
| 2453 * EBADMSG : The buffer does not contain a valid Diameter message (or is truncated). | |
| 2454 * EINVAL : A parameter is invalid. | |
| 2455 */ | |
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2456 int fd_msg_parse_buffer ( uint8_t ** buffer, size_t buflen, struct msg ** msg ); |
| 0 | 2457 |
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2458 /* Parsing Error Information structure */ |
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2459 struct fd_pei { |
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2460 char * pei_errcode; /* name of the error code to use */ |
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2461 struct avp * pei_avp; /* pointer to invalid or missing AVP (to be freed) */ |
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2462 char * pei_message; /* Overwrite default message if needed */ |
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2463 int pei_protoerr; /* do we set the 'E' bit in the error message ? */ |
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2464 }; |
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2465 |
| 0 | 2466 /* |
| 2467 * FUNCTION: fd_msg_parse_dict | |
| 2468 * | |
| 2469 * PARAMETERS: | |
| 2470 * object : A msg or AVP object as returned by fd_msg_parse_buffer. | |
| 2471 * dict : the dictionary containing the objects definitions to use for resolving all AVPs. | |
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2472 * error_info : If not NULL, will contain the detail about error upon return. May be used to generate an error reply. |
| 0 | 2473 * |
| 2474 * DESCRIPTION: | |
| 2475 * This function looks up for the command and each children AVP definitions in the dictionary. | |
| 2476 * If the dictionary definition is found, avp_model is set and the value of the AVP is interpreted accordingly and: | |
| 2477 * - for grouped AVPs, the children AVP are created and interpreted also. | |
| 2478 * - for numerical AVPs, the value is converted to host byte order and saved in the avp_value field. | |
| 2479 * - for octetstring AVPs, the string is copied into a new buffer and its address is saved in avp_value. | |
| 2480 * If the dictionary definition is not found, avp_model is set to NULL and | |
| 2481 * the content of the AVP is saved as an octetstring in an internal structure. avp_value is NULL. | |
|
637
22e8fac3b2d6
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621
diff
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|
2482 * 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 | 2483 * |
| 2484 * RETURN VALUE: | |
| 2485 * 0 : The message has been fully parsed as described. | |
| 2486 * EINVAL : The msg parameter is invalid for this operation. | |
| 2487 * ENOMEM : Unable to allocate enough memory to complete the operation. | |
| 2488 * ENOTSUP : No dictionary definition for the command or one of the mandatory AVP was found. | |
| 2489 */ | |
|
620
bc7328e600f0
Removed the OUTPUT specification for SWIG, too complex
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|
2490 int fd_msg_parse_dict ( msg_or_avp * object, struct dictionary * dict, struct fd_pei * error_info ); |
|
34
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|
2491 |
| 0 | 2492 /* |
| 2493 * FUNCTION: fd_msg_parse_rules | |
| 2494 * | |
| 2495 * PARAMETERS: | |
| 2496 * object : A msg or grouped avp object that must be verified. | |
| 2497 * dict : The dictionary containing the rules definitions. | |
|
34
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|
2498 * error_info : If not NULL, the first problem information will be saved here. |
| 0 | 2499 * |
| 2500 * DESCRIPTION: | |
| 2501 * Check that the children of the object do not conflict with the dictionary rules (ABNF compliance). | |
| 2502 * | |
| 2503 * RETURN VALUE: | |
| 2504 * 0 : The message has been fully parsed and complies to the defined rules. | |
| 2505 * EBADMSG : A conflict was detected, or a mandatory AVP is unknown in the dictionary. | |
| 2506 * EINVAL : The msg or avp object is invalid for this operation. | |
| 2507 * ENOMEM : Unable to allocate enough memory to complete the operation. | |
| 2508 */ | |
|
620
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|
2509 int fd_msg_parse_rules ( msg_or_avp * object, struct dictionary * dict, struct fd_pei * error_info); |
|
34
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|
2510 |
| 0 | 2511 |
| 2512 | |
| 2513 /* | |
| 2514 * FUNCTION: fd_msg_update_length | |
| 2515 * | |
| 2516 * PARAMETERS: | |
| 2517 * object : Pointer to a valid msg or avp. | |
| 2518 * | |
| 2519 * DESCRIPTION: | |
| 2520 * Update the length field of the object passed as parameter. | |
| 2521 * As a side effect, all children objects are also updated. Therefore, all avp_value fields of | |
| 2522 * the children AVPs must be set, or an error will occur. | |
| 2523 * | |
| 2524 * RETURN VALUE: | |
| 2525 * 0 : The size has been recomputed. | |
| 2526 * EINVAL : A parameter is invalid. | |
| 2527 */ | |
| 2528 int fd_msg_update_length ( msg_or_avp * object ); | |
| 2529 | |
| 2530 | |
|
7
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|
2531 /*============================================================*/ |
|
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|
2532 /* DISPATCH */ |
|
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|
2533 /*============================================================*/ |
|
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2534 |
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|
2535 /* Dispatch module (passing incoming messages to extensions registered callbacks) |
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2536 * is split between the library and the daemon. |
|
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2537 * |
|
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2538 * The library provides the support for associating dispatch callbacks with |
|
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2539 * dictionary objects. |
|
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2540 * |
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2541 * The daemon is responsible for calling the callbacks for a message when appropriate. |
|
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2542 * |
|
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2543 * |
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2544 * The dispatch module has two main roles: |
|
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2545 * - help determine if a message can be handled locally (during the routing step) |
|
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2546 * This decision involves only the application-id of the message. |
|
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2547 * - pass the message to the callback(s) that will handle it (during the dispatch step) |
|
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2548 * |
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2549 * The first role is handled by the daemon. |
|
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2550 * |
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2551 * About the second, these are the possibilities for registering a dispatch callback: |
|
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2552 * |
|
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2553 * -> For All messages. |
|
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2554 * This callback is called for all messages that are handled locally. This should be used only |
|
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|
2555 * for debug purpose. |
|
e5af94b04946
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|
2556 * |
|
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|
2557 * -> by AVP value (constants only). |
|
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2558 * This callback will be called when a message is received and contains an AVP with a specified enumerated value. |
|
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2559 * |
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2560 * -> by AVP. |
|
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2561 * This callback will be called when the received message contains a certain AVP. |
|
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|
2562 * |
|
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|
2563 * -> by command-code. |
|
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2564 * This callback will be called when the message is a specific command (and 'R' flag). |
|
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2565 * |
|
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2566 * -> by application. |
|
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2567 * This callback will be called when the message has a specific application-id. |
|
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|
2568 * |
|
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|
2569 * ( by vendor: would this be useful? it may be added later) |
|
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|
2570 */ |
|
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|
2571 enum disp_how { |
|
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|
2572 DISP_HOW_ANY = 1, /* Any message. This should be only used for debug. */ |
|
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|
2573 DISP_HOW_APPID, /* Any message with the specified application-id */ |
|
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|
2574 DISP_HOW_CC, /* Messages of the specified command-code (request or answer). App id may be specified. */ |
|
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|
2575 DISP_HOW_AVP, /* Messages containing a specific AVP. Command-code and App id may be specified. */ |
|
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|
2576 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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|
2577 }; |
|
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|
2578 /* |
|
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|
2579 * Several criteria may be selected at the same time, for example command-code AND application id. |
|
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|
2580 * |
|
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|
2581 * If several callbacks are registered for the same object, they are called in the order they were registered. |
|
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|
2582 * The order in which the callbacks are called is: |
|
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|
2583 * DISP_HOW_ANY |
|
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2584 * DISP_HOW_AVP_ENUMVAL & DISP_HOW_AVP |
|
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|
2585 * DISP_HOW_CC |
|
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|
2586 * DISP_HOW_APPID |
|
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2587 */ |
|
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|
2588 |
|
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2589 /* When a callback is registered, a "when" argument is passed in addition to the disp_how value, |
|
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2590 * to specify which values the criteria must match. */ |
|
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|
2591 struct disp_when { |
|
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2592 struct dict_object * app; |
|
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2593 struct dict_object * command; |
|
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2594 struct dict_object * avp; |
|
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2595 struct dict_object * value; |
|
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2596 }; |
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2597 |
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2598 /* Note that all the dictionary objects should really belong to the same dictionary! |
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2599 * |
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2600 * Here is the details on this "when" argument, depending on the disp_how value. |
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2601 * |
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2602 * DISP_HOW_ANY. |
|
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2603 * In this case, "when" must be NULL. |
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2604 * |
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2605 * DISP_HOW_APPID. |
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2606 * Only the "app_id" field must be set, other fields are ignored. It points to a dictionary object of type DICT_APPLICATION. |
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2607 * |
|
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2608 * DISP_HOW_CC. |
|
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2609 * The "command" field must be defined and point to a dictionary object of type DICT_COMMAND. |
|
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2610 * 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. |
|
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2611 * The other fields are ignored. |
|
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2612 * |
|
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2613 * DISP_HOW_AVP. |
|
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2614 * The "avp" field of the structure must be set and point to a dictionary object of type DICT_AVP. |
|
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2615 * The "app_id" field may be set to restrict the messages matching to a specific app id. |
|
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2616 * The "command" field may also be set to a valid DICT_COMMAND object. |
|
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2617 * The content of the "value" field is ignored. |
|
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|
2618 * |
|
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|
2619 * DISP_HOW_AVP_ENUMVAL. |
|
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|
2620 * 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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|
2621 * and points to a valid DICT_ENUMVAL object. |
|
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|
2622 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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diff
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|
2623 * Here is a sumary of the fields: ( M : must be set; m : may be set; 0 : ignored ) |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2624 * field: app_id command avp value |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2625 * APPID : M 0 0 0 |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2626 * CC : m M 0 0 |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2627 * AVP : m m M 0 |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2628 * ENUMVA: m m M M |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2629 */ |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2630 |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2631 enum disp_action { |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2632 DISP_ACT_CONT, /* The next handler should be called, unless *msg == NULL. */ |
|
90
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
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88
diff
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|
2633 DISP_ACT_SEND, /* The updated message must be sent. No further callback is called. */ |
|
2c9444152e4b
Added the dispatch thread code
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88
diff
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|
2634 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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diff
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|
2635 }; |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2636 /* The callbacks that are registered have the following prototype: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2637 * int dispatch_callback( struct msg ** msg, struct avp * avp, struct session * session, enum disp_action * action ); |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2638 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2639 * CALLBACK: dispatch_callback |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2640 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2641 * PARAMETERS: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2642 * msg : the received message on function entry. may be updated to answer on return (see description) |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2643 * avp : for callbacks registered with DISP_HOW_AVP or DISP_HOW_AVP_ENUMVAL, direct link to the triggering AVP. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2644 * 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.
Sebastien Decugis <sdecugis@nict.go.jp>
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638
diff
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|
2645 * opaque : An opaque pointer that is registered along the session handler. |
|
7
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6
diff
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|
2646 * action : upon return, this tells the daemon what to do next. |
|
e5af94b04946
Added dispatch module and tests
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diff
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|
2647 * |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2648 * DESCRIPTION: |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2649 * Called when a received message matchs the condition for which the callback was registered. |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2650 * This callback may do any kind of processing on the message, including: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2651 * - create an answer for a request. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2652 * - proxy a request or message, add / remove the Proxy-Info AVP, then forward the message. |
|
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2653 * - update a routing table or start a connection with a new peer, then forward the message. |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2654 * - ... |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2655 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2656 * 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
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|
2657 * When *action == DISP_ACT_CONT, the next registered callback is called. |
|
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2658 * 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
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|
2659 * - if the message is an answer, it is discarded. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2660 * - if the message is a request, it is passed again to the routing stack, and marked as non-local handling. |
|
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Added dispatch module and tests
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parents:
6
diff
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|
2661 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2662 * RETURN VALUE: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2663 * 0 : The callback executed successfully and updated *action appropriately. |
|
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2664 * !0 : standard errors. In case of error, the message is discarded. |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2665 */ |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2666 |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2667 /* 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
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|
2668 struct disp_hdl; |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2669 |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2670 /* |
|
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Added dispatch module and tests
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parents:
6
diff
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|
2671 * FUNCTION: fd_disp_register |
|
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Added dispatch module and tests
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6
diff
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|
2672 * |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2673 * PARAMETERS: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2674 * cb : The callback function to register (see dispatch_callback description above). |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2675 * how : How the callback must be registered. |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2676 * 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
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|
2677 * opaque : A pointer that is passed back to the handler. The content is not interpreted by the framework. |
|
7
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parents:
6
diff
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|
2678 * handle : On success, a handler to the registered callback is stored here if not NULL. |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2679 * This handler can be used to unregister the cb. |
|
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Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2680 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2681 * DESCRIPTION: |
|
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2682 * Register a new callback to handle messages delivered locally. |
|
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2683 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2684 * RETURN VALUE: |
|
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2685 * 0 : The callback is registered. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2686 * EINVAL : A parameter is invalid. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2687 * ENOMEM : Not enough memory to complete the operation |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2688 */ |
|
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
|
2689 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
|
2690 enum disp_how how, struct disp_when * when, void * opaque, struct disp_hdl ** handle ); |
|
7
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parents:
6
diff
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|
2691 |
|
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Added dispatch module and tests
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parents:
6
diff
changeset
|
2692 /* |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2693 * FUNCTION: fd_disp_unregister |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2694 * |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2695 * PARAMETERS: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2696 * handle : Location of the handle of the callback that must be unregistered. |
|
639
95a784729cac
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Sebastien Decugis <sdecugis@nict.go.jp>
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638
diff
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|
2697 * opaque : If not NULL, the opaque data that was registered is restored here. |
|
7
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2698 * |
|
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2699 * DESCRIPTION: |
|
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2700 * Removes a callback previously registered by fd_disp_register. |
|
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6
diff
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|
2701 * |
|
e5af94b04946
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parents:
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diff
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|
2702 * RETURN VALUE: |
|
e5af94b04946
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6
diff
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|
2703 * 0 : The callback is unregistered. |
|
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6
diff
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|
2704 * EINVAL : A parameter is invalid. |
|
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6
diff
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|
2705 */ |
|
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>
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638
diff
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|
2706 int fd_disp_unregister ( struct disp_hdl ** handle, void ** opaque ); |
|
7
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|
2707 |
|
90
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diff
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|
2708 /* Destroy all handlers */ |
|
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|
2709 void fd_disp_unregister_all ( void ); |
|
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diff
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|
2710 |
|
7
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diff
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|
2711 /* |
|
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diff
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|
2712 * FUNCTION: fd_msg_dispatch |
|
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diff
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|
2713 * |
|
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diff
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|
2714 * PARAMETERS: |
|
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diff
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|
2715 * msg : A msg object that have already been fd_msg_parse_dict. |
|
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diff
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|
2716 * session : The session corresponding to this object, if any. |
|
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6
diff
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|
2717 * action : Upon return, the action that must be taken on the message |
|
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|
2718 * error_code : Upon return with action == DISP_ACT_ERROR, contains the error (such as "DIAMETER_UNABLE_TO_COMPLY") |
|
7
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|
2719 * |
|
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|
2720 * DESCRIPTION: |
|
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|
2721 * Call all handlers registered for a given message. |
|
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|
2722 * The session must have already been resolved on entry. |
|
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|
2723 * The msg pointed may be updated during this process. |
|
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diff
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|
2724 * Upon return, the action parameter points to what must be done next. |
|
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|
2725 * |
|
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|
2726 * RETURN VALUE: |
|
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|
2727 * 0 : Success. |
|
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|
2728 * EINVAL : A parameter is invalid. |
|
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|
2729 * (other errors) |
|
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diff
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|
2730 */ |
|
706
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Large UNTESTED commit with the following changes:
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2731 int fd_msg_dispatch ( struct msg ** msg, struct session * session, enum disp_action *action, char ** error_code ); |
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2732 |
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2733 |
| 0 | 2734 |
| 2735 /*============================================================*/ | |
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2736 /* QUEUES */ |
| 0 | 2737 /*============================================================*/ |
| 2738 | |
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2739 /* Management of FIFO queues of elements */ |
| 0 | 2740 |
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2741 /* A queue is an opaque object */ |
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2742 struct fifo; |
| 0 | 2743 |
| 2744 /* | |
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2745 * FUNCTION: fd_fifo_new |
| 0 | 2746 * |
| 2747 * PARAMETERS: | |
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2748 * queue : Upon success, a pointer to the new queue is saved here. |
| 0 | 2749 * |
| 2750 * DESCRIPTION: | |
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2751 * Create a new empty queue. |
| 0 | 2752 * |
| 2753 * RETURN VALUE : | |
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2754 * 0 : The queue has been initialized successfully. |
| 0 | 2755 * EINVAL : The parameter is invalid. |
| 2756 * ENOMEM : Not enough memory to complete the creation. | |
| 2757 */ | |
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2758 int fd_fifo_new ( struct fifo ** queue ); |
| 0 | 2759 |
| 2760 /* | |
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2761 * FUNCTION: fd_fifo_del |
| 0 | 2762 * |
| 2763 * PARAMETERS: | |
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2764 * queue : Pointer to an empty queue to delete. |
| 0 | 2765 * |
| 2766 * DESCRIPTION: | |
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2767 * Destroys a queue. This is only possible if no thread is waiting for an element, |
| 0 | 2768 * and the queue is empty. |
| 2769 * | |
| 2770 * RETURN VALUE: | |
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2771 * 0 : The queue has been destroyed successfully. |
| 0 | 2772 * EINVAL : The parameter is invalid. |
| 2773 */ | |
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2774 int fd_fifo_del ( struct fifo ** queue ); |
| 0 | 2775 |
| 2776 /* | |
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2777 * FUNCTION: fd_fifo_move |
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2778 * |
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2779 * PARAMETERS: |
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2780 * oldq : Location of a FIFO that is to be emptied. |
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2781 * newq : A FIFO that will receive the old data. |
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2782 * loc_update : if non NULL, a place to store the pointer to new FIFO atomically with the move. |
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2783 * |
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2784 * DESCRIPTION: |
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2785 * Empties a queue and move its content to another one atomically. |
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2786 * |
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2787 * RETURN VALUE: |
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2788 * 0 : The queue has been destroyed successfully. |
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2789 * EINVAL : A parameter is invalid. |
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2790 */ |
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2791 int fd_fifo_move ( struct fifo * oldq, struct fifo * newq, struct fifo ** loc_update ); |
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2792 |
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2793 /* |
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2794 * FUNCTION: fd_fifo_length |
| 0 | 2795 * |
| 2796 * PARAMETERS: | |
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2797 * queue : The queue from which to retrieve the number of elements. |
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2798 * length : Upon success, the current number of elements in the queue is stored here. |
| 0 | 2799 * |
| 2800 * DESCRIPTION: | |
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2801 * Retrieve the number of elements in a queue. |
| 0 | 2802 * |
| 2803 * RETURN VALUE: | |
| 2804 * 0 : The length of the queue has been written. | |
| 2805 * EINVAL : A parameter is invalid. | |
| 2806 */ | |
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2807 int fd_fifo_length ( struct fifo * queue, int * length ); |
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2808 int fd_fifo_length_noerr ( struct fifo * queue ); /* no error checking version */ |
| 0 | 2809 |
| 2810 /* | |
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2811 * FUNCTION: fd_fifo_setthrhd |
| 0 | 2812 * |
| 2813 * PARAMETERS: | |
| 2814 * queue : The queue for which the thresholds are being set. | |
| 2815 * data : An opaque pointer that is passed to h_cb and l_cb callbacks. | |
| 2816 * high : The high-level threshold. If the number of elements in the queue increase to this value, h_cb is called. | |
| 2817 * h_cb : if not NULL, a callback to call when the queue lengh is bigger than "high". | |
| 2818 * low : The low-level threshold. Must be < high. | |
| 2819 * l_cb : If the number of elements decrease to low, this callback is called. | |
| 2820 * | |
| 2821 * DESCRIPTION: | |
| 2822 * This function allows to adjust the number of producer / consumer threads of a queue. | |
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2823 * If the consumer are slower than the producers, the number of elements in the queue increase. |
| 0 | 2824 * By setting a "high" value, we allow a callback to be called when this number is too high. |
| 2825 * The typical use would be to create an additional consumer thread in this callback. | |
| 2826 * 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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2827 * (the callback itself should implement a limit on the number of consumers that can be created) |
| 0 | 2828 * 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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2829 * 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 | 2830 * and so on. |
| 2831 * | |
| 2832 * Since there is no destructor for the data pointer, if cleanup operations are required, they should be performed in | |
| 2833 * l_cb when the length of the queue is becoming < low. | |
| 2834 * | |
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2835 * Note that the callbacks are called synchronously, during fd_fifo_post or fd_fifo_get. Their operation should be quick. |
| 0 | 2836 * |
| 2837 * RETURN VALUE: | |
| 2838 * 0 : The thresholds have been set | |
| 2839 * EINVAL : A parameter is invalid. | |
| 2840 */ | |
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2841 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 | 2842 |
| 2843 /* | |
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2844 * FUNCTION: fd_fifo_post |
| 0 | 2845 * |
| 2846 * PARAMETERS: | |
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2847 * queue : The queue in which the element must be posted. |
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2848 * item : The element that is put in the queue. |
| 0 | 2849 * |
| 2850 * DESCRIPTION: | |
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2851 * An element is added in a queue. Elements are retrieved from the queue in FIFO order |
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2852 * with the fd_fifo_get, fd_fifo_tryget, or fd_fifo_timedget functions. |
| 0 | 2853 * |
| 2854 * RETURN VALUE: | |
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2855 * 0 : The element is queued. |
| 0 | 2856 * EINVAL : A parameter is invalid. |
| 2857 * ENOMEM : Not enough memory to complete the operation. | |
| 2858 */ | |
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2859 int fd_fifo_post_int ( struct fifo * queue, void ** item ); |
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2860 #define fd_fifo_post(queue, item) \ |
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2861 fd_fifo_post_int((queue), (void *)(item)) |
| 0 | 2862 |
| 2863 /* | |
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2864 * FUNCTION: fd_fifo_get |
| 0 | 2865 * |
| 2866 * PARAMETERS: | |
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2867 * queue : The queue from which the first element must be retrieved. |
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2868 * item : On return, the first element of the queue is stored here. |
| 0 | 2869 * |
| 2870 * DESCRIPTION: | |
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2871 * This function retrieves the first element from a queue. If the queue is empty, the function will block the |
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2872 * thread until a new element is posted to the queue, or until the thread is canceled (in which case the |
| 0 | 2873 * function does not return). |
| 2874 * | |
| 2875 * RETURN VALUE: | |
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2876 * 0 : A new element has been retrieved. |
| 0 | 2877 * EINVAL : A parameter is invalid. |
| 2878 */ | |
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2879 int fd_fifo_get_int ( struct fifo * queue, void ** item ); |
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2880 #define fd_fifo_get(queue, item) \ |
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2881 fd_fifo_get_int((queue), (void *)(item)) |
| 0 | 2882 |
| 2883 /* | |
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2884 * FUNCTION: fd_fifo_tryget |
| 0 | 2885 * |
| 2886 * PARAMETERS: | |
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2887 * queue : The queue from which the element must be retrieved. |
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2888 * item : On return, the first element of the queue is stored here. |
| 0 | 2889 * |
| 2890 * DESCRIPTION: | |
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2891 * This function is similar to fd_fifo_get, except that it will not block if |
| 0 | 2892 * the queue is empty, but return EWOULDBLOCK instead. |
| 2893 * | |
| 2894 * RETURN VALUE: | |
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2895 * 0 : A new element has been retrieved. |
| 0 | 2896 * EINVAL : A parameter is invalid. |
| 2897 * EWOULDBLOCK : The queue was empty. | |
| 2898 */ | |
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2899 int fd_fifo_tryget_int ( struct fifo * queue, void ** item ); |
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2900 #define fd_fifo_tryget(queue, item) \ |
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2901 fd_fifo_tryget_int((queue), (void *)(item)) |
| 0 | 2902 |
| 2903 /* | |
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2904 * FUNCTION: fd_fifo_timedget |
| 0 | 2905 * |
| 2906 * PARAMETERS: | |
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2907 * queue : The queue from which the element must be retrieved. |
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2908 * item : On return, the element is stored here. |
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2909 * abstime : the absolute time until which we allow waiting for an item. |
| 0 | 2910 * |
| 2911 * DESCRIPTION: | |
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2912 * This function is similar to fd_fifo_get, except that it will block if the queue is empty |
| 0 | 2913 * only until the absolute time abstime (see pthread_cond_timedwait for + info). |
| 2914 * If the queue is still empty when the time expires, the function returns ETIMEDOUT | |
| 2915 * | |
| 2916 * RETURN VALUE: | |
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2917 * 0 : A new item has been retrieved. |
| 0 | 2918 * EINVAL : A parameter is invalid. |
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2919 * ETIMEDOUT : The time out has passed and no item has been received. |
| 0 | 2920 */ |
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2921 int fd_fifo_timedget_int ( struct fifo * queue, void ** item, const struct timespec *abstime ); |
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2922 #define fd_fifo_timedget(queue, item, abstime) \ |
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2923 fd_fifo_timedget_int((queue), (void *)(item), (abstime)) |
| 0 | 2924 |
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Added some extensions and functions in the daemon
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
8
diff
changeset
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2925 /* Dump a fifo list and optionally its inner elements -- beware of deadlocks! */ |
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c5c99c73c2bf
Added some extensions and functions in the daemon
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
8
diff
changeset
|
2926 void fd_fifo_dump(int level, char * name, struct fifo * queue, void (*dump_item)(int level, void * item)); |
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c5c99c73c2bf
Added some extensions and functions in the daemon
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
8
diff
changeset
|
2927 |
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658
f198d16fa7f4
Initial commit for 1.1.0:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
653
diff
changeset
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2928 #endif /* _LIBFDPROTO_H */ |