Mercurial > hg > freeDiameter
annotate include/freeDiameter/libfdproto.h @ 895:fbf77629cb7b
Added received and sent timestamps in the messages; added logs on emission and reception
author | Sebastien Decugis <sdecugis@freediameter.net> |
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date | Fri, 30 Nov 2012 00:44:10 +0100 |
parents | 43fb27a9037f |
children | d8d0772586ad |
rev | line source |
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0 | 1 /********************************************************************************************************* |
2 * Software License Agreement (BSD License) * | |
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3 * Author: Sebastien Decugis <sdecugis@freediameter.net> * |
0 | 4 * * |
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5 * Copyright (c) 2012, WIDE Project and NICT * |
0 | 6 * All rights reserved. * |
7 * * | |
8 * Redistribution and use of this software in source and binary forms, with or without modification, are * | |
9 * permitted provided that the following conditions are met: * | |
10 * * | |
11 * * Redistributions of source code must retain the above * | |
12 * copyright notice, this list of conditions and the * | |
13 * following disclaimer. * | |
14 * * | |
15 * * Redistributions in binary form must reproduce the above * | |
16 * copyright notice, this list of conditions and the * | |
17 * following disclaimer in the documentation and/or other * | |
18 * materials provided with the distribution. * | |
19 * * | |
20 * * Neither the name of the WIDE Project or NICT nor the * | |
21 * names of its contributors may be used to endorse or * | |
22 * promote products derived from this software without * | |
23 * specific prior written permission of WIDE Project and * | |
24 * NICT. * | |
25 * * | |
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * | |
27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * | |
28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * | |
29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * | |
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * | |
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * | |
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY S_OUT OF THE USE OF THIS SOFTWARE, EVEN IF * |
0 | 33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * |
34 *********************************************************************************************************/ | |
35 | |
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36 /* This file contains the definitions of functions and types used by the libfreeDiameter library. |
0 | 37 * |
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38 * This library is meant to be used by both the freeDiameter daemon and its extensions. |
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39 * It provides the tools to manipulate Diameter messages and related data. |
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40 * This file should always be included as #include <freeDiameter/libfreeDiameter.h> |
0 | 41 * |
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42 * If any change is made to this file, you must increment the FD_PROJECT_VERSION_API version. |
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43 * |
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44 * The file contains the following parts: |
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45 * DEBUG |
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46 * MACROS |
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47 * OCTET STRINGS |
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48 * THREADS |
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49 * LISTS |
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50 * DICTIONARY |
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51 * SESSIONS |
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52 * MESSAGES |
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53 * DISPATCH |
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54 * QUEUES |
0 | 55 */ |
56 | |
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57 #ifndef _LIBFDPROTO_H |
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58 #define _LIBFDPROTO_H |
0 | 59 |
60 #ifndef FD_IS_CONFIG | |
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61 #error "You must include 'freeDiameter-host.h' before this file." |
0 | 62 #endif /* FD_IS_CONFIG */ |
63 | |
64 #include <pthread.h> | |
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65 #include <sched.h> |
0 | 66 #include <string.h> |
67 #include <assert.h> | |
68 #include <errno.h> | |
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69 #include <netinet/in.h> |
0 | 70 #include <arpa/inet.h> |
71 #include <sys/socket.h> | |
72 #include <netdb.h> | |
73 #include <stdio.h> | |
74 #include <stdlib.h> | |
75 #include <unistd.h> | |
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76 #include <stdarg.h> |
0 | 77 |
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78 #ifdef DEBUG |
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79 #include <libgen.h> /* for basename if --dbg_file is specified */ |
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80 #endif /* DEBUG */ |
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81 |
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82 /*============================================================*/ |
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83 /* INIT */ |
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84 /*============================================================*/ |
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85 |
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86 /* This function must be called first, before any call to another library function */ |
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87 int fd_libproto_init(void); /* note if you are using libfdcore, it handles this already */ |
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88 |
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89 /* Call this one when the application terminates, to destroy internal threads */ |
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90 void fd_libproto_fini(void); |
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91 |
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92 |
0 | 93 /*============================================================*/ |
94 /* DEBUG */ | |
95 /*============================================================*/ | |
96 | |
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97 |
0 | 98 /* |
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99 * FUNCTION: fd_log_debug_fstr |
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100 * MACRO: fd_log_debug |
0 | 101 * |
102 * PARAMETERS: | |
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103 * fstr : Stream where the text will be sent (default: stdout) |
0 | 104 * format : Same format string as in the printf function |
105 * ... : Same list as printf | |
106 * | |
107 * DESCRIPTION: | |
108 * Log internal information for use of developpers only. | |
109 * The format and arguments may contain UTF-8 encoded data. The | |
110 * output medium (file or console) is expected to support this encoding. | |
111 * | |
112 * RETURN VALUE: | |
113 * None. | |
114 */ | |
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115 void fd_log_debug_fstr ( FILE * fstr, const char * format, ... ); |
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116 #define fd_log_debug(format,args...) fd_log_debug_fstr(NULL, format, ## args) |
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117 |
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118 /* these are internal objects of the debug facility, |
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119 might be useful to control the behavior from outside */ |
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121 extern char * fd_debug_one_function; |
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122 extern char * fd_debug_one_file; |
0 | 123 |
124 /* | |
125 * FUNCTION: fd_log_threadname | |
126 * | |
127 * PARAMETERS: | |
128 * name : \0-terminated string containing a name to identify the current thread. | |
129 * | |
130 * DESCRIPTION: | |
131 * Name the current thread, useful for debugging multi-threaded problems. | |
132 * | |
133 * This function assumes that a global thread-specific key called "fd_log_thname" exists | |
134 * in the address space of the current process. | |
135 * | |
136 * RETURN VALUE: | |
137 * None. | |
138 */ | |
139 void fd_log_threadname ( char * name ); | |
140 extern pthread_key_t fd_log_thname; | |
141 | |
142 /* | |
143 * FUNCTION: fd_log_time | |
144 * | |
145 * PARAMETERS: | |
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146 * ts : The timestamp to log, or NULL for "now" |
0 | 147 * buf : An array where the time must be stored |
148 * len : size of the buffer | |
149 * | |
150 * DESCRIPTION: | |
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151 * Writes the timestamp (in human readable format) in a buffer. |
0 | 152 * |
153 * RETURN VALUE: | |
154 * pointer to buf. | |
155 */ | |
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156 char * fd_log_time ( struct timespec * ts, char * buf, size_t len ); |
0 | 157 |
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158 /* |
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159 * FUNCTION: fd_log_handler_register |
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160 * MACRO: |
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161 * |
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162 * PARAMETERS: |
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163 * fstr : Stream where the text will be sent to (default: stdout) |
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164 * format : Same format string as in the printf function |
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165 * va_list : Argument list |
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166 * |
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167 * DESCRIPTION: |
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168 * Register an external method for logging purposes. |
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169 * |
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170 * RETURN VALUE: |
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171 * int : Success or failure |
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172 */ |
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173 int fd_log_handler_register ( void (*logger)(const char * format, va_list *args) ); |
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174 |
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175 /* |
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176 * FUNCTION: fd_log_handler_unregister |
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177 * MACRO: |
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178 * |
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179 * PARAMETERS: |
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180 * |
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181 * DESCRIPTION: |
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182 * Unregister the external logging function. |
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183 * |
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184 * RETURN VALUE: |
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185 * int : Success or failure |
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186 */ |
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187 int fd_log_handler_unregister ( void ); |
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188 |
0 | 189 |
226
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190 /*============================================================*/ |
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191 /* DEBUG MACROS */ |
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192 /*============================================================*/ |
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193 |
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194 #ifndef ASSERT |
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195 #define ASSERT(x) assert(x) |
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196 #endif /* ASSERT */ |
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197 |
0 | 198 /* levels definitions */ |
199 #define NONE 0 /* Display no debug message */ | |
200 #define INFO 1 /* Display errors only */ | |
201 #define FULL 2 /* Display additional information to follow code execution */ | |
202 #define ANNOYING 4 /* Very verbose, for example in loops */ | |
203 #define FCTS 6 /* Display entry parameters of most functions */ | |
204 #define CALL 9 /* Display calls to most functions (with CHECK macros) */ | |
205 | |
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206 /* Increment the debug level for a file at compilation time by defining -DTRACE_LEVEL=FULL for example. */ |
0 | 207 #ifndef TRACE_LEVEL |
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208 #define TRACE_LEVEL NONE |
0 | 209 #endif /* TRACE_LEVEL */ |
210 | |
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211 /* The level of the file being compiled. */ |
0 | 212 static int local_debug_level = TRACE_LEVEL; |
213 | |
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214 /* A global level, changed by configuration or cmd line for example. Default is INFO (in libfdproto/log.c). */ |
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215 extern int fd_g_debug_lvl; |
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216 |
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217 /* Some portability code to get nice function name in __PRETTY_FUNCTION__ */ |
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218 #if (!defined( __func__)) && (__STDC_VERSION__ < 199901L) |
0 | 219 # if __GNUC__ >= 2 |
220 # define __func__ __FUNCTION__ | |
221 # else /* __GNUC__ >= 2 */ | |
222 # define __func__ "<unknown>" | |
223 # endif /* __GNUC__ >= 2 */ | |
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224 #endif /*(!defined( __func__)) && (__STDC_VERSION__ < 199901L) */ |
0 | 225 #ifndef __PRETTY_FUNCTION__ |
226 #define __PRETTY_FUNCTION__ __func__ | |
227 #endif /* __PRETTY_FUNCTION__ */ | |
228 | |
205
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229 /* A version of __FILE__ without the full path */ |
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230 static char * file_bname = NULL; |
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231 #define __STRIPPED_FILE__ (file_bname ?: (file_bname = basename((char *)__FILE__))) |
205
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232 |
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233 |
0 | 234 /* Boolean for tracing at a certain level */ |
205
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235 #ifdef DEBUG |
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236 #define TRACE_BOOL(_level_) ( ((_level_) <= local_debug_level + fd_g_debug_lvl) \ |
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237 || (fd_debug_one_function && !strcmp(fd_debug_one_function, __PRETTY_FUNCTION__)) \ |
205
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238 || (fd_debug_one_file && !strcmp(fd_debug_one_file, __STRIPPED_FILE__) ) ) |
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239 #else /* DEBUG */ |
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240 #define TRACE_BOOL(_level_) ((_level_) <= local_debug_level + fd_g_debug_lvl) |
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241 #endif /* DEBUG */ |
0 | 242 |
226
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243 |
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244 /************* |
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245 The general debug macro, each call results in two lines of debug messages (change the macro for more compact output) |
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246 *************/ |
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247 #ifdef DEBUG |
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248 /* In DEBUG mode, we add (a lot of) meta-information along each trace. This makes multi-threading problems easier to debug. */ |
0 | 249 #define TRACE_DEBUG(level,format,args... ) { \ |
250 if ( TRACE_BOOL(level) ) { \ | |
251 char __buf[25]; \ | |
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252 const char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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253 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
0 | 254 "\t%s|%*s" format "\n", \ |
206 | 255 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
0 | 256 (level < FULL)?"@":" ",level, "", ## args); \ |
257 } \ | |
258 } | |
302
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259 #else /* DEBUG */ |
304
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260 /* Do not print thread, function, ... only the message itself in this case, unless the debug level is set > FULL. */ |
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261 #define TRACE_DEBUG(level,format,args... ) { \ |
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262 if ( TRACE_BOOL(level) ) { \ |
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263 if (fd_g_debug_lvl > FULL) { \ |
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264 char __buf[25]; \ |
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265 const char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
304
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266 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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267 "\t%s|%*s" format "\n", \ |
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268 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
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269 (level < FULL)?"@":" ",level, "", ## args); \ |
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270 } else { \ |
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271 fd_log_debug(format "\n", ## args); \ |
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272 } \ |
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273 } \ |
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274 } |
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275 #endif /* DEBUG */ |
0 | 276 |
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277 /************* |
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278 Derivatives from this macro |
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279 ************/ |
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280 /* Helper for function entry -- for very detailed trace of the execution */ |
0 | 281 #define TRACE_ENTRY(_format,_args... ) \ |
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282 TRACE_DEBUG(FCTS, "[enter] %s(" _format ") {" #_args "}", __PRETTY_FUNCTION__, ##_args ); |
0 | 283 |
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284 /* Helper for debugging by adding traces -- for debuging a specific location of the code */ |
0 | 285 #define TRACE_HERE() \ |
183
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286 TRACE_DEBUG(NONE, " -- debug checkpoint %d -- ", fd_breakhere()); |
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287 int fd_breakhere(void); |
0 | 288 |
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289 /* Helper for tracing the CHECK_* macros bellow -- very very verbose code execution! */ |
0 | 290 #define TRACE_DEBUG_ALL( str ) \ |
291 TRACE_DEBUG(CALL, str ); | |
292 | |
13
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293 /* For development only, to keep track of TODO locations in the code */ |
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294 #ifndef ERRORS_ON_TODO |
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295 #define TODO( _msg, _args... ) \ |
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296 TRACE_DEBUG(NONE, "TODO: " _msg , ##_args); |
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297 #else /* ERRORS_ON_TODO */ |
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298 #define TODO( _msg, _args... ) \ |
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299 "TODO" = _msg ## _args; /* just a stupid compilation error to spot the todo */ |
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300 #endif /* ERRORS_ON_TODO */ |
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301 |
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302 /* Trace a binary buffer content */ |
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303 #define TRACE_DEBUG_BUFFER(level, prefix, buf, bufsz, suffix ) { \ |
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304 if ( TRACE_BOOL(level) ) { \ |
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305 char __ts[25]; \ |
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306 int __i; \ |
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307 size_t __sz = (size_t)(bufsz); \ |
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308 uint8_t * __buf = (uint8_t *)(buf); \ |
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309 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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310 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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311 "\t%s|%*s" prefix , \ |
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312 __thn, fd_log_time(NULL, __ts, sizeof(__ts)), __PRETTY_FUNCTION__, __FILE__, __LINE__, \ |
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313 (level < FULL)?"@":" ",level, ""); \ |
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314 for (__i = 0; __i < __sz; __i++) { \ |
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315 fd_log_debug("%02.2hhx", __buf[__i]); \ |
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316 } \ |
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317 fd_log_debug(suffix "\n"); \ |
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318 } \ |
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319 } |
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320 |
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321 /* Some aliases to socket addresses structures */ |
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322 #define sSS struct sockaddr_storage |
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323 #define sSA struct sockaddr |
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324 #define sSA4 struct sockaddr_in |
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325 #define sSA6 struct sockaddr_in6 |
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326 |
246
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327 /* The sockaddr length of a sSS structure */ |
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328 #define sSAlen( _sa_ ) \ |
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329 ( (socklen_t) ( (((sSA *)_sa_)->sa_family == AF_INET) ? (sizeof(sSA4)) : \ |
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330 ((((sSA *)_sa_)->sa_family == AF_INET6) ? (sizeof(sSA6)) : \ |
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331 0 ) ) ) |
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332 |
226
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333 /* Dump one sockaddr Node information */ |
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334 #define sSA_DUMP_NODE( sa, flag ) { \ |
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335 sSA * __sa = (sSA *)(sa); \ |
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336 char __addrbuf[INET6_ADDRSTRLEN]; \ |
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337 if (__sa) { \ |
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338 int __rc = getnameinfo(__sa, \ |
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339 sSAlen(__sa), \ |
226
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340 __addrbuf, \ |
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341 sizeof(__addrbuf), \ |
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342 NULL, \ |
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343 0, \ |
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344 flag); \ |
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345 if (__rc) \ |
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346 fd_log_debug("%s", (char *)gai_strerror(__rc)); \ |
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347 else \ |
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348 fd_log_debug("%s", &__addrbuf[0]); \ |
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349 } else { \ |
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350 fd_log_debug("(NULL / ANY)"); \ |
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351 } \ |
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352 } |
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353 /* Same but with the port (service) also */ |
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354 #define sSA_DUMP_NODE_SERV( sa, flag ) { \ |
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355 sSA * __sa = (sSA *)(sa); \ |
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356 char __addrbuf[INET6_ADDRSTRLEN]; \ |
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357 char __servbuf[32]; \ |
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358 if (__sa) { \ |
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359 int __rc = getnameinfo(__sa, \ |
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360 sSAlen(__sa), \ |
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361 __addrbuf, \ |
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362 sizeof(__addrbuf), \ |
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363 __servbuf, \ |
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364 sizeof(__servbuf), \ |
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365 flag); \ |
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366 if (__rc) \ |
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367 fd_log_debug("%s", (char *)gai_strerror(__rc)); \ |
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368 else \ |
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369 fd_log_debug("[%s]:%s", &__addrbuf[0],&__servbuf[0]); \ |
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370 } else { \ |
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371 fd_log_debug("(NULL / ANY)"); \ |
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372 } \ |
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373 } |
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374 |
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375 /* Inside a debug trace */ |
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376 #define TRACE_DEBUG_sSA(level, prefix, sa, flags, suffix ) { \ |
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377 if ( TRACE_BOOL(level) ) { \ |
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378 char __buf[25]; \ |
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379 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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380 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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381 "\t%s|%*s" prefix , \ |
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382 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
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383 (level < FULL)?"@":" ",level, ""); \ |
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384 sSA_DUMP_NODE_SERV( sa, flags ); \ |
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385 fd_log_debug(suffix "\n"); \ |
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386 } \ |
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387 } |
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388 |
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389 /* Report an error */ |
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390 #define TRACE_DEBUG_ERROR(format,args... ) \ |
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391 TRACE_DEBUG(INFO, format, ##args) |
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392 |
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393 /****************** |
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394 Optimized code: remove all debugging code |
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395 **/ |
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396 #ifdef STRIP_DEBUG_CODE |
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397 #undef TRACE_DEBUG |
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398 #undef TRACE_BOOL |
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399 #undef TRACE_DEBUG_sSA |
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400 #undef TRACE_DEBUG_BUFFER |
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401 #undef TRACE_DEBUG_ERROR |
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402 #define TRACE_DEBUG(level,format,args... ) |
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403 #define TRACE_BOOL(_level_) (0) |
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404 #define TRACE_DEBUG_BUFFER(level, prefix, buf, bufsz, suffix ) |
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405 #define TRACE_DEBUG_sSA(level, prefix, sa, flags, suffix ) |
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406 #define TRACE_DEBUG_ERROR(format,args... ) { \ |
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407 fd_log_debug(format "\n", ## args); \ |
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408 } |
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409 #endif /* STRIP_DEBUG_CODE */ |
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410 |
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411 |
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412 /*============================================================*/ |
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413 /* ERROR CHECKING MACRO */ |
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414 /*============================================================*/ |
0 | 415 |
416 /* Macros to check a return value and branch out in case of error. | |
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417 * These macro should be used only when errors are improbable, not for expected errors. |
0 | 418 */ |
419 | |
420 /* Check the return value of a system function and execute fallback in case of error */ | |
421 #define CHECK_SYS_DO( __call__, __fallback__ ) { \ | |
422 int __ret__; \ | |
423 TRACE_DEBUG_ALL( "Check SYS: " #__call__ ); \ | |
424 __ret__ = (__call__); \ | |
425 if (__ret__ < 0) { \ | |
426 int __err__ = errno; /* We may handle EINTR here */ \ | |
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427 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "' :\t%s", strerror(__err__));\ |
0 | 428 __fallback__; \ |
429 } \ | |
430 } | |
431 /* Check the return value of a system function, return error code on error */ | |
432 #define CHECK_SYS( __call__ ) { \ | |
433 int __ret__; \ | |
434 TRACE_DEBUG_ALL( "Check SYS: " #__call__ ); \ | |
435 __ret__ = (__call__); \ | |
436 if (__ret__ < 0) { \ | |
437 int __err__ = errno; /* We may handle EINTR here */ \ | |
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438 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "' :\t%s", strerror(__err__));\ |
0 | 439 return __err__; \ |
440 } \ | |
441 } | |
442 | |
443 /* Check the return value of a POSIX function and execute fallback in case of error or special value */ | |
444 #define CHECK_POSIX_DO2( __call__, __speval__, __fallback1__, __fallback2__ ) { \ | |
445 int __ret__; \ | |
446 TRACE_DEBUG_ALL( "Check POSIX: " #__call__ ); \ | |
447 __ret__ = (__call__); \ | |
448 if (__ret__ != 0) { \ | |
449 if (__ret__ == (__speval__)) { \ | |
450 __fallback1__; \ | |
451 } else { \ | |
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452 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__ret__)); \ |
0 | 453 __fallback2__; \ |
454 } \ | |
455 } \ | |
456 } | |
457 | |
458 /* Check the return value of a POSIX function and execute fallback in case of error */ | |
459 #define CHECK_POSIX_DO( __call__, __fallback__ ) \ | |
460 CHECK_POSIX_DO2( (__call__), 0, , __fallback__ ); | |
461 | |
462 /* Check the return value of a POSIX function and return it if error */ | |
463 #define CHECK_POSIX( __call__ ) { \ | |
464 int __v__; \ | |
465 CHECK_POSIX_DO( __v__ = (__call__), return __v__ ); \ | |
466 } | |
467 | |
468 /* Check that a memory allocator did not return NULL, otherwise log an error and execute fallback */ | |
469 #define CHECK_MALLOC_DO( __call__, __fallback__ ) { \ | |
470 void * __ret__; \ | |
471 TRACE_DEBUG_ALL( "Check MALLOC: " #__call__ ); \ | |
472 __ret__ = (void *)( __call__ ); \ | |
473 if (__ret__ == NULL) { \ | |
474 int __err__ = errno; \ | |
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475 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__err__)); \ |
0 | 476 __fallback__; \ |
477 } \ | |
478 } | |
479 | |
480 /* Check that a memory allocator did not return NULL, otherwise return ENOMEM */ | |
481 #define CHECK_MALLOC( __call__ ) \ | |
482 CHECK_MALLOC_DO( __call__, return ENOMEM ); | |
483 | |
484 | |
485 /* Check parameters at function entry, execute fallback on error */ | |
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486 #define CHECK_PARAMS_DO( __bool__, __fallback__ ) \ |
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487 TRACE_DEBUG_ALL( "Check PARAMS: " #__bool__ ); \ |
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488 if ( ! (__bool__) ) { \ |
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489 TRACE_DEBUG_ERROR("Warning: Invalid parameter received in '" #__bool__ "'"); \ |
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490 __fallback__; \ |
0 | 491 } |
492 /* Check parameters at function entry, return EINVAL if the boolean is false (similar to assert) */ | |
493 #define CHECK_PARAMS( __bool__ ) \ | |
494 CHECK_PARAMS_DO( __bool__, return EINVAL ); | |
495 | |
496 /* Check the return value of an internal function, log and propagate */ | |
497 #define CHECK_FCT_DO( __call__, __fallback__ ) { \ | |
498 int __ret__; \ | |
499 TRACE_DEBUG_ALL( "Check FCT: " #__call__ ); \ | |
500 __ret__ = (__call__); \ | |
501 if (__ret__ != 0) { \ | |
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502 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__ret__)); \ |
0 | 503 __fallback__; \ |
504 } \ | |
505 } | |
506 /* Check the return value of a function call, return any error code */ | |
507 #define CHECK_FCT( __call__ ) { \ | |
508 int __v__; \ | |
509 CHECK_FCT_DO( __v__ = (__call__), return __v__ ); \ | |
510 } | |
511 | |
618
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512 |
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513 |
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514 /*============================================================*/ |
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515 /* OTHER MACROS */ |
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516 /*============================================================*/ |
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517 |
618
1dbc4c5397d6
Attempting to improve python wrapper usability (work in progress)
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|
518 |
3
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Progress; added session module; testsess to be completed
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519 /* helper macros (pre-processor hacks to allow macro arguments) */ |
653
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520 #define __tostr( arg ) #arg |
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521 #define _stringize( arg ) __tostr( arg ) |
3
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522 #define __agr( arg1, arg2 ) arg1 ## arg2 |
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523 #define _aggregate( arg1, arg2 ) __agr( arg1, arg2 ) |
0 | 524 |
525 | |
20
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526 /* A l4 protocol name (TCP / SCTP) */ |
33
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527 #ifdef DISABLE_SCTP |
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528 #define IPPROTO_NAME( _proto ) \ |
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529 (((_proto) == IPPROTO_TCP) ? "TCP" : \ |
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|
530 "Unknown") |
e6fcdf12b9a0
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531 #else /* DISABLE_SCTP */ |
20
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532 #define IPPROTO_NAME( _proto ) \ |
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533 ( ((_proto) == IPPROTO_TCP) ? "TCP" : \ |
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534 (((_proto) == IPPROTO_SCTP) ? "SCTP" : \ |
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535 "Unknown")) |
33
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536 #endif /* DISABLE_SCTP */ |
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537 |
0 | 538 /* Define the value of IP loopback address */ |
539 #ifndef INADDR_LOOPBACK | |
540 #define INADDR_LOOPBACK inet_addr("127.0.0.1") | |
541 #endif /* INADDR_LOOPBACK */ | |
542 | |
512
16224de837fd
Fix problem reported by ????? ????????? on dev@freediameter.net
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454
diff
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543 #ifndef INADDR_BROADCAST |
16224de837fd
Fix problem reported by ????? ????????? on dev@freediameter.net
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544 #define INADDR_BROADCAST ((in_addr_t) 0xffffffff) |
16224de837fd
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diff
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|
545 #endif /* INADDR_BROADCAST */ |
16224de837fd
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546 |
134
6b2989c066a6
Fixed loopback test for correct network order
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547 /* An IP equivalent to IN6_IS_ADDR_LOOPBACK */ |
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548 #ifndef IN_IS_ADDR_LOOPBACK |
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549 #define IN_IS_ADDR_LOOPBACK(a) \ |
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550 ((((long int) (a)->s_addr) & ntohl(0xff000000)) == ntohl(0x7f000000)) |
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551 #endif /* IN_IS_ADDR_LOOPBACK */ |
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|
552 |
135
bbb8ddba4c85
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diff
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553 /* An IP equivalent to IN6_IS_ADDR_UNSPECIFIED */ |
bbb8ddba4c85
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554 #ifndef IN_IS_ADDR_UNSPECIFIED |
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555 #define IN_IS_ADDR_UNSPECIFIED(a) \ |
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556 (((long int) (a)->s_addr) == 0x00000000) |
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557 #endif /* IN_IS_ADDR_UNSPECIFIED */ |
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558 |
0 | 559 /* create a V4MAPPED address */ |
560 #define IN6_ADDR_V4MAP( a6, a4 ) { \ | |
561 ((uint32_t *)(a6))[0] = 0; \ | |
562 ((uint32_t *)(a6))[1] = 0; \ | |
563 ((uint32_t *)(a6))[2] = htonl(0xffff); \ | |
564 ((uint32_t *)(a6))[3] = (uint32_t)(a4); \ | |
565 } | |
566 | |
567 /* Retrieve a v4 value from V4MAPPED address ( takes a s6_addr as param) */ | |
568 #define IN6_ADDR_V4UNMAP( a6 ) \ | |
569 (((in_addr_t *)(a6))[3]) | |
570 | |
571 | |
572 /* We provide macros to convert 64 bit values to and from network byte-order, on systems where it is not already provided. */ | |
226
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573 #ifndef HAVE_NTOHLL /* Defined by the cmake step, if the ntohll symbol is defined on the system */ |
0 | 574 # if HOST_BIG_ENDIAN |
575 /* In big-endian systems, we don't have to change the values, since the order is the same as network */ | |
576 # define ntohll(x) (x) | |
577 # define htonll(x) (x) | |
578 # else /* HOST_BIG_ENDIAN */ | |
579 /* For these systems, we must reverse the bytes. Use ntohl and htonl on sub-32 blocs, and inverse these blocs. */ | |
580 # define ntohll(x) (typeof (x))( (((uint64_t)ntohl( (uint32_t)(x))) << 32 ) | ((uint64_t) ntohl( ((uint64_t)(x)) >> 32 ))) | |
581 # define htonll(x) (typeof (x))( (((uint64_t)htonl( (uint32_t)(x))) << 32 ) | ((uint64_t) htonl( ((uint64_t)(x)) >> 32 ))) | |
582 # endif /* HOST_BIG_ENDIAN */ | |
583 #endif /* HAVE_NTOHLL */ | |
584 | |
3
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585 /* This macro will give the next multiple of 4 for an integer (used for padding sizes of AVP). */ |
0 | 586 #define PAD4(_x) ((_x) + ( (4 - (_x)) & 3 ) ) |
587 | |
226
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588 /* Useful to display any value as (safe) ASCII (will garbage UTF-8 output...) */ |
0 | 589 #define ASCII(_c) ( ((_c < 32) || (_c > 127)) ? ( _c ? '?' : ' ' ) : _c ) |
590 | |
591 /* Compare timespec structures */ | |
592 #define TS_IS_INFERIOR( ts1, ts2 ) \ | |
593 ( ((ts1)->tv_sec < (ts2)->tv_sec ) \ | |
5
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594 || (((ts1)->tv_sec == (ts2)->tv_sec ) && ((ts1)->tv_nsec < (ts2)->tv_nsec) )) |
0 | 595 |
895
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596 /* Compute diff between two timespecs (pointers) */ |
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597 #define TS_DIFFERENCE( tsdiff, tsstart, tsend ) { \ |
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598 if ((tsend)->tv_nsec < (tsstart)->tv_nsec ) { \ |
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599 (tsdiff)->tv_sec = (tsend)->tv_sec - (tsstart)->tv_sec - 1; \ |
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600 (tsdiff)->tv_nsec = (tsend)->tv_nsec + 1000000000 - (tsstart)->tv_nsec; \ |
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601 } else { \ |
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602 (tsdiff)->tv_sec = (tsend)->tv_sec - (tsstart)->tv_sec; \ |
fbf77629cb7b
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603 (tsdiff)->tv_nsec = (tsend)->tv_nsec - (tsstart)->tv_nsec; \ |
fbf77629cb7b
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604 }} |
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|
605 |
fbf77629cb7b
Added received and sent timestamps in the messages; added logs on emission and reception
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diff
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606 |
542
0b6cee362f5d
Enforce validation of local certificate upon daemon start.
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diff
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607 /* This gives a good size for buffered reads */ |
0b6cee362f5d
Enforce validation of local certificate upon daemon start.
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diff
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608 #ifndef BUFSIZ |
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Enforce validation of local certificate upon daemon start.
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diff
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|
609 #define BUFSIZ 96 |
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Enforce validation of local certificate upon daemon start.
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diff
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|
610 #endif /* BUFSIZ */ |
0b6cee362f5d
Enforce validation of local certificate upon daemon start.
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611 |
706
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612 /* This gives the length of a const string */ |
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613 #define CONSTSTRLEN( str ) (sizeof(str) - 1) |
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614 |
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615 |
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616 /*============================================================*/ |
836
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617 /* PORTABILITY */ |
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618 /*============================================================*/ |
da97a5aa7976
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diff
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619 #ifndef HAVE_CLOCK_GETTIME |
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620 #define CLOCK_REALTIME 0 |
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621 #include <sys/time.h> |
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622 int clock_gettime(int clk_id, struct timespec* ts); |
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623 #endif /* HAVE_CLOCK_GETTIME */ |
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diff
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624 |
849
d7f940afd933
New portability function: strndup
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diff
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|
625 #ifndef HAVE_STRNDUP |
850
12e7fcbc1b21
Fix previous commit
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diff
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|
626 char * strndup (char *str, size_t len); |
849
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627 #endif /* HAVE_STRNDUP */ |
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628 |
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629 |
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630 /*============================================================*/ |
706
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631 /* BINARY STRINGS */ |
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632 /*============================================================*/ |
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633 |
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634 /* Compute a hash value of a binary string. |
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635 The hash must remain local to this machine, there is no guarantee that same input |
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636 will give same output on a different system (endianness) */ |
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637 uint32_t fd_os_hash ( uint8_t * string, size_t len ); |
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638 |
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639 /* This type used for binary strings that contain no \0 except as their last character. |
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640 It means some string operations can be used on it. */ |
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641 typedef uint8_t * os0_t; |
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642 |
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643 /* Same as strdup but for os0_t strings */ |
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644 os0_t os0dup_int(os0_t s, size_t l); |
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645 #define os0dup( _s, _l) (void *)os0dup_int((os0_t)(_s), _l) |
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646 |
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647 /* Check that an octet string value can be used as os0_t */ |
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648 static __inline__ int fd_os_is_valid_os0(uint8_t * os, size_t oslen) { |
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649 /* The only situation where it is not valid is when it contains a \0 inside the octet string */ |
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650 return (memchr(os, '\0', oslen) == NULL); |
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651 } |
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652 |
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653 /* The following type denotes a verified DiameterIdentity value (that contains only pure letters, digits, hyphen, dot) */ |
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654 typedef char * DiamId_t; |
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655 |
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656 /* Maximum length of a hostname we accept */ |
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657 #ifndef HOST_NAME_MAX |
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658 #define HOST_NAME_MAX 512 |
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659 #endif /* HOST_NAME_MAX */ |
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660 |
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661 /* Check if a binary string contains a valid Diameter Identity value. |
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662 rfc3588 states explicitely that such a Diameter Identity consists only of ASCII characters. */ |
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663 int fd_os_is_valid_DiameterIdentity(uint8_t * os, size_t ossz); |
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664 |
717
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665 /* The following function validates a string as a Diameter Identity or applies the IDNA transformation on it |
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666 if *inoutsz is != 0 on entry, *id may not be \0-terminated. |
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667 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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668 */ |
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669 int fd_os_validate_DiameterIdentity(char ** id, size_t * inoutsz, int memory); |
706
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670 |
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671 /* Create an order relationship for binary strings (not needed to be \0 terminated). |
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672 It does NOT mimic strings relationships so that it is more efficient. It is case sensitive. |
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673 (the strings are actually first ordered by their lengh, then by their bytes contents) |
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674 returns: -1 if os1 < os2; +1 if os1 > os2; 0 if they are equal */ |
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675 int fd_os_cmp_int(os0_t os1, size_t os1sz, os0_t os2, size_t os2sz); |
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676 #define fd_os_cmp(_o1, _l1, _o2, _l2) fd_os_cmp_int((os0_t)(_o1), _l1, (os0_t)(_o2), _l2) |
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677 |
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678 /* A roughly case-insensitive variant, which actually only compares ASCII chars (0-127) in a case-insentitive maneer |
738
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679 -- it does not support locales where a lowercase letter uses more space than upper case, such as ? -> ss |
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680 It is slower than fd_os_cmp. |
706
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681 Note that the result is NOT the same as strcasecmp !!! |
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682 |
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683 This function gives the same order as fd_os_cmp, except when it finds 2 strings to be equal. |
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684 However this is not always sufficient: |
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685 for example fd_os_cmp gives: "Ac" < "aB" < "aa" |
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686 if you attempt to fd_os_almostcasesrch "Aa" you will actually have to go past "aB" which is > "Aa". |
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687 Therefore you can use the maybefurther parameter. |
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688 This parameter is 1 on return if os1 may have been stored further that os2 (assuming os2 values are ordered by fd_os_cmp) |
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689 and 0 if we are sure that it is not the case. |
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690 When looping through a list of fd_os_cmp classified values, this parameter must be used to stop looping, in addition to the comp result. |
706
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691 */ |
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692 int fd_os_almostcasesrch_int(uint8_t * os1, size_t os1sz, uint8_t * os2, size_t os2sz, int * maybefurther); |
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693 #define fd_os_almostcasesrch(_o1, _l1, _o2, _l2, _mb) fd_os_almostcasesrch_int((os0_t)(_o1), _l1, (os0_t)(_o2), _l2, _mb) |
0 | 694 |
717
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695 /* Analyze a DiameterURI and return its components. |
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696 Return EINVAL if the URI is not valid. |
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697 *diamid is malloc'd on function return and must be freed (it is processed by fd_os_validate_DiameterIdentity). |
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698 *secure is 0 (no security) or 1 (security enabled) on return. |
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699 *port is 0 (default) or a value in host byte order on return. |
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700 *transport is 0 (default) or IPPROTO_* on return. |
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701 *proto is 0 (default) or 'd' (diameter), 'r' (radius), or 't' (tacacs+) on return. |
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702 */ |
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703 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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704 |
0 | 705 /*============================================================*/ |
706 /* THREADS */ | |
707 /*============================================================*/ | |
708 | |
709 /* Terminate a thread */ | |
710 static __inline__ int fd_thr_term(pthread_t * th) | |
711 { | |
712 void * th_ret = NULL; | |
713 | |
714 CHECK_PARAMS(th); | |
715 | |
716 /* Test if it was already terminated */ | |
717 if (*th == (pthread_t)NULL) | |
718 return 0; | |
719 | |
720 /* Cancel the thread if it is still running - ignore error if it was already terminated */ | |
721 (void) pthread_cancel(*th); | |
722 | |
723 /* Then join the thread */ | |
183
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724 CHECK_POSIX( pthread_join(*th, &th_ret) ); |
0 | 725 |
181
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726 if (th_ret == PTHREAD_CANCELED) { |
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727 TRACE_DEBUG(ANNOYING, "The thread %p was canceled", *th); |
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728 } else { |
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729 TRACE_DEBUG(CALL, "The thread %p returned %x", *th, th_ret); |
0 | 730 } |
731 | |
732 /* Clean the location */ | |
733 *th = (pthread_t)NULL; | |
734 | |
183
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735 return 0; |
0 | 736 } |
737 | |
454
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738 |
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739 /************* |
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740 Cancelation cleanup handlers for common objects |
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741 *************/ |
0 | 742 static __inline__ void fd_cleanup_mutex( void * mutex ) |
743 { | |
744 CHECK_POSIX_DO( pthread_mutex_unlock((pthread_mutex_t *)mutex), /* */); | |
745 } | |
746 | |
747 static __inline__ void fd_cleanup_rwlock( void * rwlock ) | |
748 { | |
749 CHECK_POSIX_DO( pthread_rwlock_unlock((pthread_rwlock_t *)rwlock), /* */); | |
750 } | |
751 | |
752 static __inline__ void fd_cleanup_buffer( void * buffer ) | |
753 { | |
754 free(buffer); | |
755 } | |
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756 static __inline__ void fd_cleanup_socket(void * sockptr) |
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757 { |
191
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758 if (sockptr && (*(int *)sockptr > 0)) { |
179 | 759 CHECK_SYS_DO( close(*(int *)sockptr), /* ignore */ ); |
184 | 760 *(int *)sockptr = -1; |
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761 } |
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762 } |
0 | 763 |
235
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764 |
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765 /*============================================================*/ |
0 | 766 /* LISTS */ |
767 /*============================================================*/ | |
768 | |
769 /* The following structure represents a chained list element */ | |
770 struct fd_list { | |
771 struct fd_list *next; /* next element in the list */ | |
772 struct fd_list *prev; /* previous element in the list */ | |
773 struct fd_list *head; /* head of the list */ | |
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774 void *o; /* additional pointer, used for any purpose (ex: start of the parent object) */ |
0 | 775 }; |
776 | |
777 /* Initialize a list element */ | |
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778 #define FD_LIST_INITIALIZER( _list_name ) \ |
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779 { .next = & _list_name, .prev = & _list_name, .head = & _list_name, .o = NULL } |
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780 #define FD_LIST_INITIALIZER_O( _list_name, _obj ) \ |
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781 { .next = & _list_name, .prev = & _list_name, .head = & _list_name, .o = _obj } |
618
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782 void fd_list_init ( struct fd_list * list, void * obj ); |
0 | 783 |
784 /* Return boolean, true if the list is empty */ | |
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785 #define FD_IS_LIST_EMPTY( _list ) ((((struct fd_list *)(_list))->head == (_list)) && (((struct fd_list *)(_list))->next == (_list))) |
0 | 786 |
787 /* Insert an item in a list at known position */ | |
788 void fd_list_insert_after ( struct fd_list * ref, struct fd_list * item ); | |
789 void fd_list_insert_before ( struct fd_list * ref, struct fd_list * item ); | |
790 | |
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791 /* Move all elements from a list at the end of another */ |
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792 void fd_list_move_end(struct fd_list * ref, struct fd_list * senti); |
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793 |
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794 /* 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 | 795 int fd_list_insert_ordered( struct fd_list * head, struct fd_list * item, int (*cmp_fct)(void *, void *), void ** ref_duplicate); |
796 | |
797 /* Unlink an item from a list */ | |
798 void fd_list_unlink ( struct fd_list * item ); | |
799 | |
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800 |
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801 |
0 | 802 |
803 /*============================================================*/ | |
804 /* DICTIONARY */ | |
805 /*============================================================*/ | |
618
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806 |
0 | 807 /* Structure that contains the complete dictionary definitions */ |
808 struct dictionary; | |
809 | |
810 /* Structure that contains a dictionary object */ | |
811 struct dict_object; | |
812 | |
813 /* Types of object in the dictionary. */ | |
814 enum dict_object_type { | |
815 DICT_VENDOR = 1, /* Vendor */ | |
816 DICT_APPLICATION, /* Diameter Application */ | |
817 DICT_TYPE, /* AVP data type */ | |
818 DICT_ENUMVAL, /* Named constant (value of an enumerated AVP type) */ | |
819 DICT_AVP, /* AVP */ | |
820 DICT_COMMAND, /* Diameter Command */ | |
821 DICT_RULE /* a Rule for AVP in command or grouped AVP */ | |
822 #define DICT_TYPE_MAX DICT_RULE | |
823 }; | |
824 | |
825 /* Initialize a dictionary */ | |
826 int fd_dict_init(struct dictionary ** dict); | |
827 /* Destroy a dictionary */ | |
828 int fd_dict_fini(struct dictionary ** dict); | |
829 | |
830 /* | |
831 * FUNCTION: fd_dict_new | |
832 * | |
833 * PARAMETERS: | |
834 * dict : Pointer to the dictionnary where the object is created | |
835 * type : What kind of object must be created | |
836 * data : pointer to the data for the object. | |
837 * type parameter is used to determine the type of data (see bellow for detail). | |
838 * parent : a reference to a parent object, if needed. | |
839 * ref : upon successful creation, reference to new object is stored here if !null. | |
840 * | |
841 * DESCRIPTION: | |
842 * Create a new object in the dictionary. | |
843 * See following object sections in this header file for more information on data and parent parameters format. | |
844 * | |
845 * RETURN VALUE: | |
846 * 0 : The object is created in the dictionary. | |
847 * EINVAL : A parameter is invalid. | |
848 * EEXIST : This object is already defined in the dictionary (with conflicting data). | |
849 * If "ref" is not NULL, it points to the existing element on return. | |
850 * (other standard errors may be returned, too, with their standard meaning. Example: | |
851 * ENOMEM : Memory allocation for the new object element failed.) | |
852 */ | |
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853 int fd_dict_new ( struct dictionary * dict, enum dict_object_type type, void * data, struct dict_object * parent, struct dict_object ** ref ); |
0 | 854 |
855 /* | |
856 * FUNCTION: fd_dict_search | |
857 * | |
858 * PARAMETERS: | |
859 * dict : Pointer to the dictionnary where the object is searched | |
860 * type : type of object that is being searched | |
861 * criteria : how the object must be searched. See object-related sections bellow for more information. | |
862 * what : depending on criteria, the data that must be searched. | |
863 * result : On successful return, pointer to the object is stored here. | |
864 * retval : this value is returned if the object is not found and result is not NULL. | |
865 * | |
866 * DESCRIPTION: | |
867 * Perform a search in the dictionary. | |
868 * See the object-specific sections bellow to find how to look for each objects. | |
869 * If the "result" parameter is NULL, the function is used to check if an object is in the dictionary. | |
870 * Otherwise, a reference to the object is stored in result if found. | |
871 * If result is not NULL and the object is not found, retval is returned (should be 0 or ENOENT usually) | |
872 * | |
873 * RETURN VALUE: | |
874 * 0 : The object has been found in the dictionary, or *result is NULL. | |
875 * EINVAL : A parameter is invalid. | |
876 * ENOENT : No matching object has been found, and result was NULL. | |
877 */ | |
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878 int fd_dict_search ( struct dictionary * dict, enum dict_object_type type, int criteria, void * what, struct dict_object ** result, int retval ); |
0 | 879 |
880 /* Special case: get the generic error command object */ | |
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881 int fd_dict_get_error_cmd(struct dictionary * dict, struct dict_object ** obj); |
0 | 882 |
883 /* | |
884 * FUNCTION: fd_dict_getval | |
885 * | |
886 * PARAMETERS: | |
887 * object : Pointer to a dictionary object. | |
888 * data : pointer to a structure to hold the data for the object. | |
889 * The type is the same as "data" parameter in fd_dict_new function. | |
890 * | |
891 * DESCRIPTION: | |
892 * Retrieve content of a dictionary object. | |
893 * See following object sections in this header file for more information on data and parent parameters format. | |
894 * | |
895 * RETURN VALUE: | |
896 * 0 : The content of the object has been retrieved. | |
897 * EINVAL : A parameter is invalid. | |
898 */ | |
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899 int fd_dict_getval ( struct dict_object * object, void * val); |
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900 int fd_dict_gettype ( struct dict_object * object, enum dict_object_type * type); |
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901 int fd_dict_getdict ( struct dict_object * object, struct dictionary ** dict); |
0 | 902 |
903 /* Debug functions */ | |
904 void fd_dict_dump_object(struct dict_object * obj); | |
905 void fd_dict_dump(struct dictionary * dict); | |
906 | |
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907 /* Function to access full contents of the dictionary, see doc in dictionary.c */ |
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908 int fd_dict_getlistof(int criteria, void * parent, struct fd_list ** sentinel); |
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909 |
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910 /* Function to remove an entry from the dictionary. |
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911 This cannot be used if the object has children (for example a vendor with vendor-specific AVPs). |
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912 In such case, the children must be removed first. */ |
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913 int fd_dict_delete(struct dict_object * obj); |
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914 |
0 | 915 /* |
916 *************************************************************************** | |
917 * | |
918 * Vendor object | |
919 * | |
920 * These types are used to manage vendors in the dictionary | |
921 * | |
922 *************************************************************************** | |
923 */ | |
924 | |
925 /* Type to hold a Vendor ID: "SMI Network Management Private Enterprise Codes" (RFC3232) */ | |
926 typedef uint32_t vendor_id_t; | |
927 | |
928 /* Type to hold data associated to a vendor */ | |
929 struct dict_vendor_data { | |
930 vendor_id_t vendor_id; /* ID of a vendor */ | |
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931 char * vendor_name; /* The name of this vendor */ |
0 | 932 }; |
933 | |
934 /* The criteria for searching a vendor object in the dictionary */ | |
935 enum { | |
936 VENDOR_BY_ID = 10, /* "what" points to a vendor_id_t */ | |
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937 VENDOR_BY_NAME, /* "what" points to a char * */ |
0 | 938 VENDOR_OF_APPLICATION /* "what" points to a struct dict_object containing an application (see bellow) */ |
939 }; | |
940 | |
941 /*** | |
942 * API usage : | |
943 | |
944 Note: the value of "vendor_name" is copied when the object is created, and the string may be disposed afterwards. | |
945 On the other side, when value is retrieved with dict_getval, the string is not copied and MUST NOT be freed. It will | |
946 be freed automatically along with the object itself with call to dict_fini later. | |
947 | |
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948 - fd_dict_new: |
0 | 949 The "parent" parameter is not used for vendors. |
950 Sample code to create a vendor: | |
951 { | |
952 int ret; | |
953 struct dict_object * myvendor; | |
954 struct dict_vendor_data myvendordata = { 23455, "my vendor name" }; -- just an example... | |
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955 ret = fd_dict_new ( dict, DICT_VENDOR, &myvendordata, NULL, &myvendor ); |
0 | 956 } |
957 | |
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958 - fd_dict_search: |
0 | 959 Sample codes to look for a vendor object, by its id or name: |
960 { | |
961 int ret; | |
962 struct dict_object * vendor_found; | |
963 vendor_id_t vendorid = 23455; | |
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964 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_ID, &vendorid, &vendor_found, ENOENT); |
0 | 965 - or - |
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966 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_NAME, "my vendor name", &vendor_found, ENOENT); |
0 | 967 } |
968 | |
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969 - fd_dict_getval: |
0 | 970 Sample code to retrieve the data from a vendor object: |
971 { | |
972 int ret; | |
973 struct dict_object * myvendor; | |
974 struct dict_vendor_data myvendordata; | |
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975 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_NAME, "my vendor name", &myvendor, ENOENT); |
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976 ret = fd_dict_getval ( myvendor, &myvendordata ); |
0 | 977 printf("my vendor id: %d\n", myvendordata.vendor_id ); |
978 } | |
979 | |
980 */ | |
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981 |
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982 /* Special function: */ |
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983 uint32_t * fd_dict_get_vendorid_list(struct dictionary * dict); |
0 | 984 |
985 /* | |
986 *************************************************************************** | |
987 * | |
988 * Application object | |
989 * | |
990 * These types are used to manage Diameter applications in the dictionary | |
991 * | |
992 *************************************************************************** | |
993 */ | |
994 | |
995 /* Type to hold a Diameter application ID: IANA assigned value for this application. */ | |
996 typedef uint32_t application_id_t; | |
997 | |
998 /* Type to hold data associated to an application */ | |
999 struct dict_application_data { | |
1000 application_id_t application_id; /* ID of the application */ | |
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1001 char * application_name; /* The name of this application */ |
0 | 1002 }; |
1003 | |
1004 /* The criteria for searching an application object in the dictionary */ | |
1005 enum { | |
1006 APPLICATION_BY_ID = 20, /* "what" points to a application_id_t */ | |
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1007 APPLICATION_BY_NAME, /* "what" points to a char * */ |
0 | 1008 APPLICATION_OF_TYPE, /* "what" points to a struct dict_object containing a type object (see bellow) */ |
1009 APPLICATION_OF_COMMAND /* "what" points to a struct dict_object containing a command (see bellow) */ | |
1010 }; | |
1011 | |
1012 /*** | |
1013 * API usage : | |
1014 | |
1015 The "parent" parameter of dict_new may point to a vendor object to inform of what vendor defines the application. | |
1016 for standard-track applications, the "parent" parameter should be NULL. | |
1017 The vendor associated to an application is retrieved with VENDOR_OF_APPLICATION search criteria on vendors. | |
1018 | |
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1019 - fd_dict_new: |
0 | 1020 Sample code for application creation: |
1021 { | |
1022 int ret; | |
1023 struct dict_object * vendor; | |
1024 struct dict_object * appl; | |
1025 struct dict_vendor_data vendor_data = { | |
1026 23455, | |
1027 "my vendor name" | |
1028 }; | |
1029 struct dict_application_data app_data = { | |
1030 9789, | |
1031 "my vendor's application" | |
1032 }; | |
1033 | |
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1034 ret = fd_dict_new ( dict, DICT_VENDOR, &vendor_data, NULL, &vendor ); |
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1035 ret = fd_dict_new ( dict, DICT_APPLICATION, &app_data, vendor, &appl ); |
0 | 1036 } |
1037 | |
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1038 - fd_dict_search: |
0 | 1039 Sample code to retrieve the vendor of an application |
1040 { | |
1041 int ret; | |
1042 struct dict_object * vendor, * appli; | |
1043 | |
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1044 ret = fd_dict_search ( dict, DICT_APPLICATION, APPLICATION_BY_NAME, "my vendor's application", &appli, ENOENT); |
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1045 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_OF_APPLICATION, appli, &vendor, ENOENT); |
0 | 1046 } |
1047 | |
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1048 - fd_dict_getval: |
0 | 1049 Sample code to retrieve the data from an application object: |
1050 { | |
1051 int ret; | |
1052 struct dict_object * appli; | |
1053 struct dict_application_data appl_data; | |
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1054 ret = fd_dict_search ( dict, DICT_APPLICATION, APPLICATION_BY_NAME, "my vendor's application", &appli, ENOENT); |
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1055 ret = fd_dict_getval ( appli, &appl_data ); |
0 | 1056 printf("my application id: %s\n", appl_data.application_id ); |
1057 } | |
1058 | |
1059 */ | |
1060 | |
1061 /* | |
1062 *************************************************************************** | |
1063 * | |
1064 * Type object | |
1065 * | |
1066 * These types are used to manage AVP data types in the dictionary | |
1067 * | |
1068 *************************************************************************** | |
1069 */ | |
1070 | |
1071 /* Type to store any AVP value */ | |
1072 union avp_value { | |
1073 struct { | |
1074 uint8_t *data; /* bytes buffer */ | |
1075 size_t len; /* length of the data buffer */ | |
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1076 } os; /* Storage for an octet string */ |
0 | 1077 int32_t i32; /* integer 32 */ |
1078 int64_t i64; /* integer 64 */ | |
1079 uint32_t u32; /* unsigned 32 */ | |
1080 uint64_t u64; /* unsigned 64 */ | |
1081 float f32; /* float 32 */ | |
1082 double f64; /* float 64 */ | |
1083 }; | |
1084 | |
1085 /* These are the basic AVP types defined in RFC3588bis */ | |
1086 enum dict_avp_basetype { | |
1087 AVP_TYPE_GROUPED, | |
1088 AVP_TYPE_OCTETSTRING, | |
1089 AVP_TYPE_INTEGER32, | |
1090 AVP_TYPE_INTEGER64, | |
1091 AVP_TYPE_UNSIGNED32, | |
1092 AVP_TYPE_UNSIGNED64, | |
1093 AVP_TYPE_FLOAT32, | |
1094 AVP_TYPE_FLOAT64 | |
1095 #define AVP_TYPE_MAX AVP_TYPE_FLOAT64 | |
1096 }; | |
1097 | |
1098 /* Callbacks that can be associated with a derived type to easily interpret the AVP value. */ | |
1099 /* | |
1100 * CALLBACK: dict_avpdata_interpret | |
1101 * | |
1102 * PARAMETERS: | |
1103 * val : Pointer to the AVP value that must be interpreted. | |
1104 * interpreted : The result of interpretation is stored here. The format and meaning depends on each type. | |
1105 * | |
1106 * DESCRIPTION: | |
1107 * This callback can be provided with a derived type in order to facilitate the interpretation of formated data. | |
1108 * For example, when an AVP of type "Address" is received, it can be used to convert the octetstring into a struct sockaddr. | |
1109 * This callback is not called directly, but through the message's API msg_avp_value_interpret function. | |
1110 * | |
1111 * RETURN VALUE: | |
1112 * 0 : Operation complete. | |
1113 * !0 : An error occurred, the error code is returned. | |
1114 */ | |
1115 typedef int (*dict_avpdata_interpret) (union avp_value * value, void * interpreted); | |
1116 /* | |
1117 * CALLBACK: dict_avpdata_encode | |
1118 * | |
1119 * PARAMETERS: | |
1120 * data : The formated data that must be stored in the AVP value. | |
1121 * val : Pointer to the AVP value storage area where the data must be stored. | |
1122 * | |
1123 * DESCRIPTION: | |
1124 * This callback can be provided with a derived type in order to facilitate the encoding of formated data. | |
1125 * For example, it can be used to convert a struct sockaddr in an AVP value of type Address. | |
1126 * This callback is not called directly, but through the message's API msg_avp_value_encode function. | |
1127 * If the callback is defined for an OctetString based type, the created string must be malloc'd. free will be called | |
1128 * automatically later. | |
1129 * | |
1130 * RETURN VALUE: | |
1131 * 0 : Operation complete. | |
1132 * !0 : An error occurred, the error code is returned. | |
1133 */ | |
1134 typedef int (*dict_avpdata_encode) (void * data, union avp_value * val); | |
1135 | |
1136 | |
1137 /* Type to hold data associated to a derived AVP data type */ | |
1138 struct dict_type_data { | |
1139 enum dict_avp_basetype type_base; /* How the data of such AVP must be interpreted */ | |
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1140 char * type_name; /* The name of this type */ |
0 | 1141 dict_avpdata_interpret type_interpret;/* cb to convert the AVP value in more comprehensive format (or NULL) */ |
1142 dict_avpdata_encode type_encode; /* cb to convert formatted data into an AVP value (or NULL) */ | |
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1143 char * (*type_dump)(union avp_value * val); /* cb called by fd_msg_dump_one for this type of data (if != NULL). Returned string must be freed. */ |
0 | 1144 }; |
1145 | |
1146 /* The criteria for searching a type object in the dictionary */ | |
1147 enum { | |
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1148 TYPE_BY_NAME = 30, /* "what" points to a char * */ |
0 | 1149 TYPE_OF_ENUMVAL, /* "what" points to a struct dict_object containing an enumerated constant (DICT_ENUMVAL, see bellow). */ |
1150 TYPE_OF_AVP /* "what" points to a struct dict_object containing an AVP object. */ | |
1151 }; | |
1152 | |
1153 | |
1154 /*** | |
1155 * API usage : | |
1156 | |
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1157 - fd_dict_new: |
0 | 1158 The "parent" parameter may point to an application object, when a type is defined by a Diameter application. |
1159 | |
1160 Sample code: | |
1161 { | |
1162 int ret; | |
1163 struct dict_object * mytype; | |
1164 struct dict_type_data mytypedata = | |
1165 { | |
1166 AVP_TYPE_OCTETSTRING, | |
1167 "Address", | |
1168 NULL, | |
1169 NULL | |
1170 }; | |
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1171 ret = fd_dict_new ( dict, DICT_TYPE, &mytypedata, NULL, &mytype ); |
0 | 1172 } |
1173 | |
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1174 - fd_dict_search: |
0 | 1175 Sample code: |
1176 { | |
1177 int ret; | |
1178 struct dict_object * address_type; | |
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1179 ret = fd_dict_search ( dict, DICT_TYPE, TYPE_BY_NAME, "Address", &address_type, ENOENT); |
0 | 1180 } |
1181 | |
1182 */ | |
1183 | |
1184 /* | |
1185 *************************************************************************** | |
1186 * | |
1187 * Enumerated values object | |
1188 * | |
1189 * These types are used to manage named constants of some AVP, | |
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1190 * for enumerated types. freeDiameter allows constants for types others than Unsigned32 |
0 | 1191 * |
1192 *************************************************************************** | |
1193 */ | |
1194 | |
1195 /* Type to hold data of named constants for AVP */ | |
1196 struct dict_enumval_data { | |
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1197 char * enum_name; /* The name of this constant */ |
0 | 1198 union avp_value enum_value; /* Value of the constant. Union term depends on parent type's base type. */ |
1199 }; | |
1200 | |
1201 /* The criteria for searching a constant in the dictionary */ | |
1202 enum { | |
1203 ENUMVAL_BY_STRUCT = 40, /* "what" points to a struct dict_enumval_request as defined bellow */ | |
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1204 ENUMVAL_BY_NAME, /* This cannot be used for researches */ |
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1205 ENUMVAL_BY_VALUE /* This cannot be used for researches */ |
0 | 1206 }; |
1207 | |
1208 struct dict_enumval_request { | |
1209 /* Identifier of the parent type, one of the following must not be NULL */ | |
1210 struct dict_object *type_obj; | |
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1211 char * type_name; |
0 | 1212 |
1213 /* Search criteria for the constant */ | |
1214 struct dict_enumval_data search; /* search.enum_value is used only if search.enum_name == NULL */ | |
1215 }; | |
1216 | |
1217 /*** | |
1218 * API usage : | |
1219 | |
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1220 - fd_dict_new: |
0 | 1221 The "parent" parameter must point to a derived type object. |
1222 Sample code to create a type "Boolean" with two constants "True" and "False": | |
1223 { | |
1224 int ret; | |
1225 struct dict_object * type_boolean; | |
1226 struct dict_type_data type_boolean_data = | |
1227 { | |
1228 AVP_TYPE_INTEGER32, | |
1229 "Boolean", | |
1230 NULL, | |
1231 NULL | |
1232 }; | |
1233 struct dict_enumval_data boolean_false = | |
1234 { | |
1235 .enum_name="False", | |
1236 .enum_value.i32 = 0 | |
1237 }; | |
1238 struct dict_enumval_data boolean_true = | |
1239 { | |
1240 .enum_name="True", | |
1241 .enum_value.i32 = -1 | |
1242 }; | |
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1243 ret = fd_dict_new ( dict, DICT_TYPE, &type_boolean_data, NULL, &type_boolean ); |
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1244 ret = fd_dict_new ( dict, DICT_ENUMVAL, &boolean_false, type_boolean, NULL ); |
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1245 ret = fd_dict_new ( dict, DICT_ENUMVAL, &boolean_true , type_boolean, NULL ); |
0 | 1246 |
1247 } | |
1248 | |
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1249 - fd_dict_search: |
0 | 1250 Sample code to look for a constant name, by its value: |
1251 { | |
1252 int ret; | |
1253 struct dict_object * value_found; | |
1254 struct dict_enumval_request boolean_by_value = | |
1255 { | |
1256 .type_name = "Boolean", | |
1257 .search.enum_name=NULL, | |
1258 .search.enum_value.i32 = -1 | |
1259 }; | |
1260 | |
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1261 ret = fd_dict_search ( dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &boolean_by_value, &value_found, ENOENT); |
0 | 1262 } |
1263 | |
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1264 - fd_dict_getval: |
0 | 1265 Sample code to retrieve the data from a constant object: |
1266 { | |
1267 int ret; | |
1268 struct dict_object * value_found; | |
1269 struct dict_enumval_data boolean_data = NULL; | |
1270 struct dict_enumval_request boolean_by_value = | |
1271 { | |
1272 .type_name = "Boolean", | |
1273 .search.enum_name=NULL, | |
1274 .search.enum_value.i32 = 0 | |
1275 }; | |
1276 | |
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1277 ret = fd_dict_search ( dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &boolean_by_value, &value_found, ENOENT); |
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1278 ret = fd_dict_getval ( value_found, &boolean_data ); |
0 | 1279 printf(" Boolean with value 0: %s", boolean_data.enum_name ); |
1280 } | |
1281 */ | |
1282 | |
1283 /* | |
1284 *************************************************************************** | |
1285 * | |
1286 * AVP object | |
1287 * | |
1288 * These objects are used to manage AVP definitions in the dictionary | |
1289 * | |
1290 *************************************************************************** | |
1291 */ | |
1292 | |
1293 /* Type to hold an AVP code. For vendor 0, these codes are assigned by IANA. Otherwise, it is managed by the vendor */ | |
1294 typedef uint32_t avp_code_t; | |
1295 | |
1296 /* Values of AVP flags */ | |
1297 #define AVP_FLAG_VENDOR 0x80 | |
1298 #define AVP_FLAG_MANDATORY 0x40 | |
1299 #define AVP_FLAG_RESERVED3 0x20 | |
1300 #define AVP_FLAG_RESERVED4 0x10 | |
1301 #define AVP_FLAG_RESERVED5 0x08 | |
1302 #define AVP_FLAG_RESERVED6 0x04 | |
1303 #define AVP_FLAG_RESERVED7 0x02 | |
1304 #define AVP_FLAG_RESERVED8 0x01 | |
1305 | |
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1306 /* For dumping flags and values */ |
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1307 #define DUMP_AVPFL_str "%c%c" |
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1308 #define DUMP_AVPFL_val(_val) (_val & AVP_FLAG_VENDOR)?'V':'-' , (_val & AVP_FLAG_MANDATORY)?'M':'-' |
0 | 1309 |
1310 /* Type to hold data associated to an avp */ | |
1311 struct dict_avp_data { | |
1312 avp_code_t avp_code; /* Code of the avp */ | |
1313 vendor_id_t avp_vendor; /* Vendor of the AVP, or 0 */ | |
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1314 char * avp_name; /* Name of this AVP */ |
0 | 1315 uint8_t avp_flag_mask; /* Mask of fixed AVP flags */ |
1316 uint8_t avp_flag_val; /* Values of the fixed flags */ | |
1317 enum dict_avp_basetype avp_basetype; /* Basic type of data found in the AVP */ | |
1318 }; | |
1319 | |
1320 /* The criteria for searching an avp object in the dictionary */ | |
1321 enum { | |
1322 AVP_BY_CODE = 50, /* "what" points to an avp_code_t, vendor is always 0 */ | |
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1323 AVP_BY_NAME, /* "what" points to a char *, vendor is always 0 */ |
0 | 1324 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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1325 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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1326 AVP_BY_NAME_ALL_VENDORS /* "what" points to a string. Might be quite slow... */ |
0 | 1327 }; |
1328 | |
1329 /* Struct used for some researchs */ | |
1330 struct dict_avp_request { | |
1331 vendor_id_t avp_vendor; | |
1332 avp_code_t avp_code; | |
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1333 char * avp_name; |
0 | 1334 }; |
1335 | |
1336 | |
1337 /*** | |
1338 * API usage : | |
1339 | |
1340 If "parent" parameter is not NULL during AVP creation, it must point to a DICT_TYPE object. | |
1341 The extended type is then attached to the AVP. In case where it is an enumerated type, the value of | |
1342 AVP is automatically interpreted in debug messages, and in message checks. | |
1343 The derived type of an AVP can be retrieved with: dict_search ( DICT_TYPE, TYPE_OF_AVP, avp, ... ) | |
1344 | |
1345 To create the rules (ABNF) for children of Grouped AVP, see the DICT_RULE related part. | |
1346 | |
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1347 - fd_dict_new: |
0 | 1348 Sample code for AVP creation: |
1349 { | |
1350 int ret; | |
1351 struct dict_object * user_name_avp; | |
1352 struct dict_object * boolean_type; | |
1353 struct dict_object * sample_boolean_avp; | |
1354 struct dict_avp_data user_name_data = { | |
1355 1, // code | |
1356 0, // vendor | |
1357 "User-Name", // name | |
1358 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 | |
1359 AVP_FLAG_MANDATORY, // the V flag must be cleared, the M flag must be set. | |
1360 AVP_TYPE_OCTETSTRING // User-Name AVP contains OctetString data (further precision such as UTF8String can be given with a parent derived type) | |
1361 }; | |
1362 struct dict_avp_data sample_boolean_data = { | |
1363 31337, | |
1364 23455, | |
1365 "Sample-Boolean", | |
1366 AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, | |
1367 AVP_FLAG_VENDOR, | |
1368 AVP_TYPE_INTEGER32 // This MUST be the same as parent type's | |
1369 }; | |
1370 | |
1371 -- Create an AVP with a base type -- | |
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1372 ret = fd_dict_new ( dict, DICT_AVP, &user_name_data, NULL, &user_name_avp ); |
0 | 1373 |
1374 -- Create an AVP with a derived type -- | |
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1375 ret = fd_dict_search ( dict, DICT_TYPE, TYPE_BY_NAME, "Boolean", &boolean_type, ENOENT); |
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1376 ret = fd_dict_new ( dict, DICT_AVP, &sample_boolean_data , boolean_type, &sample_boolean_avp ); |
0 | 1377 |
1378 } | |
1379 | |
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1380 - fd_dict_search: |
0 | 1381 Sample code to look for an AVP |
1382 { | |
1383 int ret; | |
1384 struct dict_object * avp_username; | |
1385 struct dict_object * avp_sampleboolean; | |
1386 struct dict_avp_request avpvendorboolean = | |
1387 { | |
1388 .avp_vendor = 23455, | |
1389 .avp_name = "Sample-Boolean" | |
1390 }; | |
1391 | |
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1392 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME, "User-Name", &avp_username, ENOENT); |
0 | 1393 |
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1394 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME_AND_VENDOR, &avpvendorboolean, &avp_sampleboolean, ENOENT); |
0 | 1395 |
1396 } | |
1397 | |
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1398 - fd_dict_getval: |
0 | 1399 Sample code to retrieve the data from an AVP object: |
1400 { | |
1401 int ret; | |
1402 struct dict_object * avp_username; | |
1403 struct dict_avp_data user_name_data; | |
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1404 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME, "User-Name", &avp_username, ENOENT); |
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1405 ret = fd_dict_getval ( avp_username, &user_name_data ); |
0 | 1406 printf("User-Name code: %d\n", user_name_data.avp_code ); |
1407 } | |
1408 | |
1409 */ | |
1410 | |
1411 /* | |
1412 *************************************************************************** | |
1413 * | |
1414 * Command object | |
1415 * | |
1416 * These types are used to manage commands objects in the dictionary | |
1417 * | |
1418 *************************************************************************** | |
1419 */ | |
1420 | |
1421 /* Type to hold a Diameter command code: IANA assigned values. 0x0-0x7fffff=standard, 0x800000-0xfffffd=vendors, 0xfffffe-0xffffff=experimental */ | |
1422 typedef uint32_t command_code_t; | |
1423 | |
1424 /* Values of command flags */ | |
1425 #define CMD_FLAG_REQUEST 0x80 | |
1426 #define CMD_FLAG_PROXIABLE 0x40 | |
1427 #define CMD_FLAG_ERROR 0x20 | |
1428 #define CMD_FLAG_RETRANSMIT 0x10 | |
1429 #define CMD_FLAG_RESERVED5 0x08 | |
1430 #define CMD_FLAG_RESERVED6 0x04 | |
1431 #define CMD_FLAG_RESERVED7 0x02 | |
1432 #define CMD_FLAG_RESERVED8 0x01 | |
1433 | |
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1434 /* For dumping flags and values */ |
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1435 #define DUMP_CMDFL_str "%c%c%c%c" |
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1436 #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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1437 |
0 | 1438 /* Type to hold data associated to a command */ |
1439 struct dict_cmd_data { | |
1440 command_code_t cmd_code; /* code of the command */ | |
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1441 char * cmd_name; /* Name of the command */ |
0 | 1442 uint8_t cmd_flag_mask; /* Mask of fixed-value flags */ |
1443 uint8_t cmd_flag_val; /* values of the fixed flags */ | |
1444 }; | |
1445 | |
1446 /* The criteria for searching an avp object in the dictionary */ | |
1447 enum { | |
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1448 CMD_BY_NAME = 60, /* "what" points to a char * */ |
0 | 1449 CMD_BY_CODE_R, /* "what" points to a command_code_t. The "Request" command is returned. */ |
1450 CMD_BY_CODE_A, /* "what" points to a command_code_t. The "Answer" command is returned. */ | |
1451 CMD_ANSWER /* "what" points to a struct dict_object of a request command. The corresponding "Answer" command is returned. */ | |
1452 }; | |
1453 | |
1454 | |
1455 /*** | |
1456 * API usage : | |
1457 | |
1458 The "parent" parameter of dict_new may point to an application object to inform of what application defines the command. | |
1459 The application associated to a command is retrieved with APPLICATION_OF_COMMAND search criteria on applications. | |
1460 | |
1461 To create the rules for children of commands, see the DICT_RULE related part. | |
1462 | |
1463 Note that the "Request" and "Answer" commands are two independant objects. This allows to have different rules for each. | |
1464 | |
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1465 - fd_dict_new: |
0 | 1466 Sample code for command creation: |
1467 { | |
1468 int ret; | |
1469 struct dict_object * cer; | |
1470 struct dict_object * cea; | |
1471 struct dict_cmd_data ce_data = { | |
1472 257, // code | |
1473 "Capabilities-Exchange-Request", // name | |
1474 CMD_FLAG_REQUEST, // mask | |
1475 CMD_FLAG_REQUEST // value. Only the "R" flag is constrained here, set. | |
1476 }; | |
1477 | |
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1478 ret = fd_dict_new (dict, DICT_COMMAND, &ce_data, NULL, &cer ); |
0 | 1479 |
1480 ce_data.cmd_name = "Capabilities-Exchange-Answer"; | |
1481 ce_data.cmd_flag_val = 0; // Same constraint on "R" flag, but this time it must be cleared. | |
1482 | |
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1483 ret = fd_dict_new ( dict, DICT_COMMAND, &ce_data, NULL, &cea ); |
0 | 1484 } |
1485 | |
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1486 - fd_dict_search: |
0 | 1487 Sample code to look for a command |
1488 { | |
1489 int ret; | |
1490 struct dict_object * cer, * cea; | |
1491 command_code_t code = 257; | |
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1492 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &cer, ENOENT); |
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1493 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_CODE_R, &code, &cer, ENOENT); |
0 | 1494 } |
1495 | |
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1496 - fd_dict_getval: |
0 | 1497 Sample code to retrieve the data from a command object: |
1498 { | |
1499 int ret; | |
1500 struct dict_object * cer; | |
1501 struct dict_object * cea; | |
1502 struct dict_cmd_data cea_data; | |
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1503 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &cer, ENOENT); |
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1504 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_ANSWER, cer, &cea, ENOENT); |
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1505 ret = fd_dict_getval ( cea, &cea_data ); |
0 | 1506 printf("Answer to CER: %s\n", cea_data.cmd_name ); |
1507 } | |
1508 | |
1509 */ | |
1510 | |
1511 /* | |
1512 *************************************************************************** | |
1513 * | |
1514 * Rule object | |
1515 * | |
1516 * These objects are used to manage rules in the dictionary (ABNF implementation) | |
1517 * This is used for checking messages validity (more powerful than a DTD) | |
1518 * | |
1519 *************************************************************************** | |
1520 */ | |
1521 | |
1522 /* This defines the kind of rule that is defined */ | |
1523 enum rule_position { | |
1524 RULE_FIXED_HEAD = 1, /* The AVP must be at the head of the group. The rule_order field is used to specify the position. */ | |
1525 RULE_REQUIRED, /* The AVP must be present in the parent, but its position is not defined. */ | |
1526 RULE_OPTIONAL, /* The AVP may be present in the message. Used to specify a max number of occurences for example */ | |
1527 RULE_FIXED_TAIL /* The AVP must be at the end of the group. The rule_order field is used to specify the position. */ | |
1528 }; | |
1529 | |
1530 /* Content of a RULE object data */ | |
1531 struct dict_rule_data { | |
1532 struct dict_object *rule_avp; /* Pointer to the AVP object that is concerned by this rule */ | |
1533 enum rule_position rule_position; /* The position in which the rule_avp must appear in the parent */ | |
1534 unsigned rule_order; /* for RULE_FIXED_* rules, the place. 1,2,3.. for HEAD rules; ...,3,2,1 for TAIL rules. */ | |
1535 int rule_min; /* Minimum number of occurences. -1 means "default": 0 for optional rules, 1 for other rules */ | |
1536 int rule_max; /* Maximum number of occurences. -1 means no maximum. 0 means the AVP is forbidden. */ | |
1537 }; | |
1538 | |
1539 /* The criteria for searching a rule in the dictionary */ | |
1540 enum { | |
1541 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?" */ | |
1542 }; | |
1543 | |
1544 /* Structure for querying the dictionary about a rule */ | |
1545 struct dict_rule_request { | |
1546 struct dict_object *rule_parent; /* The grouped avp or command to which the rule apply */ | |
1547 struct dict_object *rule_avp; /* The AVP concerned by this rule */ | |
1548 }; | |
1549 | |
1550 | |
1551 /*** | |
1552 * API usage : | |
1553 | |
1554 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). | |
1555 | |
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1556 - fd_dict_new: |
0 | 1557 Sample code for rule creation. Let's create the Proxy-Info grouped AVP for example. |
1558 { | |
1559 int ret; | |
1560 struct dict_object * proxy_info_avp; | |
1561 struct dict_object * proxy_host_avp; | |
1562 struct dict_object * proxy_state_avp; | |
1563 struct dict_object * diameteridentity_type; | |
1564 struct dict_rule_data rule_data; | |
1565 struct dict_type_data di_type_data = { AVP_TYPE_OCTETSTRING, "DiameterIdentity", NULL, NULL }; | |
1566 struct dict_avp_data proxy_info_data = { 284, 0, "Proxy-Info", AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_GROUPED }; | |
1567 struct dict_avp_data proxy_host_data = { 280, 0, "Proxy-Host", AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_OCTETSTRING }; | |
1568 struct dict_avp_data proxy_state_data = { 33, 0, "Proxy-State",AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_OCTETSTRING }; | |
1569 | |
1570 -- Create the parent AVP | |
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1571 ret = fd_dict_new ( dict, DICT_AVP, &proxy_info_data, NULL, &proxy_info_avp ); |
0 | 1572 |
1573 -- Create the first child AVP. | |
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1574 ret = fd_dict_new ( dict, DICT_TYPE, &di_type_data, NULL, &diameteridentity_type ); |
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1575 ret = fd_dict_new ( dict, DICT_AVP, &proxy_host_data, diameteridentity_type, &proxy_host_avp ); |
0 | 1576 |
1577 -- Create the other child AVP | |
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1578 ret = fd_dict_new ( dict, DICT_AVP, &proxy_state_data, NULL, &proxy_state_avp ); |
0 | 1579 |
1580 -- Now we can create the rules. Both children AVP are mandatory. | |
1581 rule_data.rule_position = RULE_REQUIRED; | |
1582 rule_data.rule_min = -1; | |
1583 rule_data.rule_max = -1; | |
1584 | |
1585 rule_data.rule_avp = proxy_host_avp; | |
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1586 ret = fd_dict_new ( dict, DICT_RULE, &rule_data, proxy_info_avp, NULL ); |
0 | 1587 |
1588 rule_data.rule_avp = proxy_state_avp; | |
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1589 ret = fd_dict_new ( dict, DICT_RULE, &rule_data, proxy_info_avp, NULL ); |
0 | 1590 } |
1591 | |
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1592 - fd_dict_search and fd_dict_getval are similar to previous examples. |
0 | 1593 |
1594 */ | |
1595 | |
1596 /* Define some hard-coded values */ | |
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1597 /* Application */ |
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1598 #define AI_RELAY 0xffffffff |
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1599 |
0 | 1600 /* Commands Codes */ |
1601 #define CC_CAPABILITIES_EXCHANGE 257 | |
1602 #define CC_RE_AUTH 258 | |
1603 #define CC_ACCOUNTING 271 | |
1604 #define CC_ABORT_SESSION 274 | |
1605 #define CC_SESSION_TERMINATION 275 | |
1606 #define CC_DEVICE_WATCHDOG 280 | |
1607 #define CC_DISCONNECT_PEER 282 | |
1608 | |
1609 /* AVPs (Vendor 0) */ | |
87 | 1610 #define AC_USER_NAME 1 |
0 | 1611 #define AC_PROXY_STATE 33 |
1612 #define AC_HOST_IP_ADDRESS 257 | |
1613 #define AC_AUTH_APPLICATION_ID 258 | |
1614 #define AC_ACCT_APPLICATION_ID 259 | |
1615 #define AC_VENDOR_SPECIFIC_APPLICATION_ID 260 | |
1616 #define AC_REDIRECT_HOST_USAGE 261 | |
1617 #define AC_REDIRECT_MAX_CACHE_TIME 262 | |
1618 #define AC_SESSION_ID 263 | |
1619 #define AC_ORIGIN_HOST 264 | |
1620 #define AC_SUPPORTED_VENDOR_ID 265 | |
1621 #define AC_VENDOR_ID 266 | |
1622 #define AC_FIRMWARE_REVISION 267 | |
1623 #define AC_RESULT_CODE 268 | |
1624 #define AC_PRODUCT_NAME 269 | |
1625 #define AC_DISCONNECT_CAUSE 273 | |
1626 #define ACV_DC_REBOOTING 0 | |
1627 #define ACV_DC_BUSY 1 | |
1628 #define ACV_DC_NOT_FRIEND 2 | |
1629 #define AC_ORIGIN_STATE_ID 278 | |
1630 #define AC_FAILED_AVP 279 | |
1631 #define AC_PROXY_HOST 280 | |
1632 #define AC_ERROR_MESSAGE 281 | |
1633 #define AC_ROUTE_RECORD 282 | |
1634 #define AC_DESTINATION_REALM 283 | |
1635 #define AC_PROXY_INFO 284 | |
1636 #define AC_REDIRECT_HOST 292 | |
1637 #define AC_DESTINATION_HOST 293 | |
1638 #define AC_ERROR_REPORTING_HOST 294 | |
1639 #define AC_ORIGIN_REALM 296 | |
1640 #define AC_INBAND_SECURITY_ID 299 | |
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1641 #define ACV_ISI_NO_INBAND_SECURITY 0 |
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1642 #define ACV_ISI_TLS 1 |
0 | 1643 |
705
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1644 /* Error codes from Base protocol |
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1645 (reference: http://www.iana.org/assignments/aaa-parameters/aaa-parameters.xml#aaa-parameters-4) |
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1646 Note that currently, rfc3588bis-26 has some different values for some of these |
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1647 */ |
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1648 #define ER_DIAMETER_MULTI_ROUND_AUTH 1001 |
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1649 |
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1650 #define ER_DIAMETER_SUCCESS 2001 |
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1651 #define ER_DIAMETER_LIMITED_SUCCESS 2002 |
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1652 |
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1653 #define ER_DIAMETER_COMMAND_UNSUPPORTED 3001 /* 5019 ? */ |
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1654 #define ER_DIAMETER_UNABLE_TO_DELIVER 3002 |
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1655 #define ER_DIAMETER_REALM_NOT_SERVED 3003 |
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1656 #define ER_DIAMETER_TOO_BUSY 3004 |
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1657 #define ER_DIAMETER_LOOP_DETECTED 3005 |
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1658 #define ER_DIAMETER_REDIRECT_INDICATION 3006 |
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1659 #define ER_DIAMETER_APPLICATION_UNSUPPORTED 3007 |
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1660 #define ER_DIAMETER_INVALID_HDR_BITS 3008 /* 5020 ? */ |
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1661 #define ER_DIAMETER_INVALID_AVP_BITS 3009 /* 5021 ? */ |
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1662 #define ER_DIAMETER_UNKNOWN_PEER 3010 /* 5018 ? */ |
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1663 |
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1664 #define ER_DIAMETER_AUTHENTICATION_REJECTED 4001 |
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1665 #define ER_DIAMETER_OUT_OF_SPACE 4002 |
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1666 #define ER_ELECTION_LOST 4003 |
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1667 |
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1668 #define ER_DIAMETER_AVP_UNSUPPORTED 5001 |
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1669 #define ER_DIAMETER_UNKNOWN_SESSION_ID 5002 |
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1670 #define ER_DIAMETER_AUTHORIZATION_REJECTED 5003 |
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1671 #define ER_DIAMETER_INVALID_AVP_VALUE 5004 |
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1672 #define ER_DIAMETER_MISSING_AVP 5005 |
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1673 #define ER_DIAMETER_RESOURCES_EXCEEDED 5006 |
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1674 #define ER_DIAMETER_CONTRADICTING_AVPS 5007 |
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1675 #define ER_DIAMETER_AVP_NOT_ALLOWED 5008 |
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1676 #define ER_DIAMETER_AVP_OCCURS_TOO_MANY_TIMES 5009 |
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1677 #define ER_DIAMETER_NO_COMMON_APPLICATION 5010 |
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1678 #define ER_DIAMETER_UNSUPPORTED_VERSION 5011 |
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1679 #define ER_DIAMETER_UNABLE_TO_COMPLY 5012 |
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1680 #define ER_DIAMETER_INVALID_BIT_IN_HEADER 5013 /* 3011 ? */ |
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1681 #define ER_DIAMETER_INVALID_AVP_LENGTH 5014 |
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1682 #define ER_DIAMETER_INVALID_MESSAGE_LENGTH 5015 /* 3012 ? */ |
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1683 #define ER_DIAMETER_INVALID_AVP_BIT_COMBO 5016 /* deprecated? */ |
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1684 #define ER_DIAMETER_NO_COMMON_SECURITY 5017 |
0 | 1685 |
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1686 |
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1687 /*============================================================*/ |
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1688 /* SESSIONS */ |
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1689 /*============================================================*/ |
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1690 |
3
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1691 /* Modules that want to associate a state with a Session-Id must first register a handler of this type */ |
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1692 struct session_handler; |
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1693 |
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1694 /* This opaque structure represents a session associated with a Session-Id */ |
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1695 struct session; |
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1696 |
226
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1697 /* The state information that a module associate with a session -- each module defines its own data format */ |
3
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1698 typedef void session_state; |
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1699 |
453
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1700 /* The following function must be called to activate the session expiry mechanism */ |
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1701 int fd_sess_start(void); |
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
340
diff
changeset
|
1702 |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1703 /* |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1704 * FUNCTION: fd_sess_handler_create |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1705 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1706 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1707 * 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
|
1708 * 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
|
1709 * 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
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|
1710 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1711 * DESCRIPTION: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1712 * 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
|
1713 * 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
|
1714 * 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
|
1715 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1716 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1717 * 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
|
1718 * EINVAL : A parameter is invalid. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1719 * 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
|
1720 */ |
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1721 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
|
1722 /* 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
|
1723 #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
|
1724 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
|
1725 |
340
81821e9f6988
Fix issue on session cleanup callback parameters -- thanks Souheil for reporting.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
336
diff
changeset
|
1726 |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1727 /* |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1728 * FUNCTION: fd_sess_handler_destroy |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1729 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1730 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1731 * 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
|
1732 * 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
|
1733 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1734 * DESCRIPTION: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1735 * 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
|
1736 * 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
|
1737 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1738 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1739 * 0 : The handler was destroyed. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1740 * EINVAL : A parameter is invalid. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1741 * 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
|
1742 */ |
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
|
1743 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
|
1744 |
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1745 |
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1746 |
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1747 /* |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1748 * FUNCTION: fd_sess_new |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1749 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1750 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1751 * session : The location where the session object will be created upon success. |
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1752 * diamid : a Diameter Identity, or NULL. |
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1753 * diamidlen : if diamid is \0-terminated, this can be 0. Otherwise, the length of diamid. |
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1754 * opt : Additional string, or NULL. Usage is described bellow. |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1755 * optlen : if opt is \0-terminated, this can be 0. Otherwise, the length of opt. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1756 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1757 * DESCRIPTION: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1758 * Create a new session object. The Session-Id string associated with this session is generated as follow: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1759 * If diamId parameter is provided, the string is created according to the RFC: <diamId>;<high32>;<low32>[;opt] where |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1760 * diamId is a Diameter Identity. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1761 * high32 and low32 are the parts of a monotonic 64 bits counter initialized to (time, 0) at startup. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1762 * opt is an optional string that can be concatenated to the identifier. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1763 * If diamId is NULL, the string is exactly the content of opt. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1764 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1765 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1766 * 0 : The session is created. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1767 * EINVAL : A parameter is invalid. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1768 * EALREADY : A session with the same name already exists (returned in *session) |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1769 * 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
|
1770 */ |
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
1771 int fd_sess_new ( struct session ** session, DiamId_t diamid, size_t diamidlen, uint8_t * opt, size_t optlen ); |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1772 |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1773 /* |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1774 * FUNCTION: fd_sess_fromsid |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1775 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1776 * PARAMETERS: |
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
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|
1777 * sid : pointer to a string containing a Session-Id (should be UTF-8). |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1778 * len : length of the sid string (which does not need to be '\0'-terminated) |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1779 * session : On success, pointer to the session object created / retrieved. |
653
34373acfbc6a
Added sample C++ file in _sample extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
649
diff
changeset
|
1780 * isnew : if not NULL, set to 1 on return if the session object has been created, 0 if it was simply retrieved. |
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1781 * |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1782 * DESCRIPTION: |
85
e5fcd672caff
Added new function to retrieve messages sessions easily
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
83
diff
changeset
|
1783 * Retrieve a session object from a Session-Id string. In case no session object was previously existing with this |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1784 * 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
diff
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|
1785 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1786 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1787 * 0 : The session parameter has been updated. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1788 * 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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|
1789 * 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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|
1790 */ |
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
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parents:
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diff
changeset
|
1791 int fd_sess_fromsid ( uint8_t * sid, size_t len, struct session ** session, int * isnew); |
3
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
2
diff
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|
1792 |
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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diff
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|
1793 /* |
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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diff
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|
1794 * FUNCTION: fd_sess_getsid |
ef303f1078ab
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parents:
2
diff
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|
1795 * |
ef303f1078ab
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parents:
2
diff
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|
1796 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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|
1797 * session : Pointer to a session object. |
706
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
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|
1798 * sid : On success, the location of the sid is stored here. |
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1799 * |
3
ef303f1078ab
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parents:
2
diff
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|
1800 * DESCRIPTION: |
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parents:
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diff
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|
1801 * Retrieve the session identifier (Session-Id) corresponding to a session object. |
706
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parents:
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|
1802 * The returned sid is a \0-terminated binary string which might be UTF-8 (but there is no guarantee in the framework). |
3
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parents:
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diff
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|
1803 * It may be used for example to set the value of an AVP. |
ef303f1078ab
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parents:
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diff
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|
1804 * Note that the sid string is not copied, just its reference... do not free it! |
2
d8ce06172629
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parents:
1
diff
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1805 * |
3
ef303f1078ab
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1806 * RETURN VALUE: |
706
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1807 * 0 : The sid & len parameters have been updated. |
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1808 * EINVAL : A parameter is invalid. |
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1809 */ |
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
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1810 int fd_sess_getsid ( struct session * session, os0_t * sid, size_t * sidlen ); |
3
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Progress; added session module; testsess to be completed
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parents:
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1811 |
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1812 /* |
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parents:
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1813 * FUNCTION: fd_sess_settimeout |
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parents:
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1814 * |
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1815 * PARAMETERS: |
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Progress; added session module; testsess to be completed
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parents:
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|
1816 * session : The session for which to set the timeout. |
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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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1817 * timeout : The date when the session times out. |
2
d8ce06172629
Added a global debug level var
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parents:
1
diff
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|
1818 * |
3
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parents:
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1819 * DESCRIPTION: |
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parents:
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1820 * 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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1821 * called several times on the same object to update the timeout value. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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1822 * When the timeout date is reached, the cleanup handler of each |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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|
1823 * module that registered data with this session is called, then the |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1824 * session is cleared. |
2
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1
diff
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|
1825 * |
3
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1826 * There is a possible race condition between cleanup of the session |
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1827 * and use of its data; applications should ensure that they are not |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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1828 * using data from a session that is about to expire / expired. |
2
d8ce06172629
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Sebastien Decugis <sdecugis@nict.go.jp>
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1
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1829 * |
3
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1830 * RETURN VALUE: |
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Progress; added session module; testsess to be completed
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parents:
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1831 * 0 : The session timeout has been updated. |
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Sebastien Decugis <sdecugis@nict.go.jp>
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1832 * EINVAL : A parameter is invalid. |
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1833 */ |
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1834 int fd_sess_settimeout( struct session * session, const struct timespec * timeout ); |
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1835 |
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1836 /* |
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1837 * FUNCTION: fd_sess_destroy |
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1838 * |
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1839 * PARAMETERS: |
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1840 * session : Pointer to a session object. |
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1841 * |
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1842 * DESCRIPTION: |
706
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|
1843 * Destroys all associated states of a session, if any. |
3
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parents:
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1844 * Equivalent to a session timeout expired, but the effect is immediate. |
706
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parents:
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1845 * The session itself is marked as deleted, and will be freed when it is not referenced |
4ffbc9f1e922
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Sebastien Decugis <sdecugis@nict.go.jp>
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1846 * by any message anymore. |
3
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1847 * |
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1848 * RETURN VALUE: |
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1849 * 0 : The session no longer exists. |
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1850 * EINVAL : A parameter is invalid. |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1851 */ |
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1852 int fd_sess_destroy ( struct session ** session ); |
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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1853 |
6
b0d377c79d80
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|
1854 /* |
b0d377c79d80
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1855 * FUNCTION: fd_sess_reclaim |
b0d377c79d80
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1856 * |
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diff
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|
1857 * PARAMETERS: |
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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1858 * session : Pointer to a session object. |
b0d377c79d80
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Sebastien Decugis <sdecugis@nict.go.jp>
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diff
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1859 * |
b0d377c79d80
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Sebastien Decugis <sdecugis@nict.go.jp>
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diff
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1860 * DESCRIPTION: |
706
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Sebastien Decugis <sdecugis@nict.go.jp>
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1861 * Equivalent to fd_sess_destroy, only if no session_state is associated with the session. |
4ffbc9f1e922
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|
1862 * Otherwise, this function has no effect (except that it sets *session to NULL). |
6
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1863 * |
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
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1864 * RETURN VALUE: |
706
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1865 * 0 : The session was reclaimed. |
6
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Sebastien Decugis <sdecugis@nict.go.jp>
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5
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|
1866 * EINVAL : A parameter is invalid. |
b0d377c79d80
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Sebastien Decugis <sdecugis@nict.go.jp>
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|
1867 */ |
b0d377c79d80
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diff
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|
1868 int fd_sess_reclaim ( struct session ** session ); |
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Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
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1869 |
b0d377c79d80
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|
1870 |
3
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|
1871 |
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1872 |
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1873 /* |
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1874 * FUNCTION: fd_sess_state_store |
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
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1
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1875 * |
3
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|
1876 * PARAMETERS: |
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parents:
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|
1877 * handler : The handler with which the state is registered. |
ef303f1078ab
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parents:
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|
1878 * session : The session object with which the state is registered. |
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diff
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1879 * state : An application state (opaque data) to store with the session. |
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1880 * |
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parents:
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1881 * DESCRIPTION: |
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parents:
2
diff
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1882 * Stores an application state with a session. This state can later be retrieved |
ef303f1078ab
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parents:
2
diff
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|
1883 * with fd_sess_state_retrieve, or implicitly in the cleanup handler when the session |
ef303f1078ab
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1884 * is destroyed. |
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1885 * |
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1886 * RETURN VALUE: |
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1887 * 0 : The state has been stored. |
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2
diff
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1888 * EINVAL : A parameter is invalid. |
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parents:
2
diff
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1889 * EALREADY : Data was already associated with this session and client. |
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parents:
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1890 * ENOMEM : Not enough memory to complete the operation |
ef303f1078ab
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2
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|
1891 */ |
6
b0d377c79d80
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5
diff
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|
1892 int fd_sess_state_store_internal ( struct session_handler * handler, struct session * session, session_state ** state ); |
5
c2d2729e3603
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parents:
3
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|
1893 #define fd_sess_state_store( _handler, _session, _state ) \ |
6
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1894 fd_sess_state_store_internal( (_handler), (_session), (void *)(_state) ) |
3
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1895 |
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|
1896 /* |
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1897 * FUNCTION: fd_sess_state_retrieve |
2
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|
1898 * |
3
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1899 * PARAMETERS: |
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1900 * handler : The handler with which the state was registered. |
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1901 * session : The session object with which the state was registered. |
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1902 * state : Location where the state must be saved if it is found. |
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1903 * |
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1904 * DESCRIPTION: |
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1905 * Retrieves a state saved by fd_sess_state_store. |
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1906 * After this function has been called, the state is no longer associated with |
ef303f1078ab
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1907 * the session. A new call to fd_sess_state_store must be performed in order to |
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1908 * store again the data with the session. |
2
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1909 * |
3
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1910 * RETURN VALUE: |
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1911 * 0 : *state is updated (NULL or points to the state if it was found). |
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1912 * EINVAL : A parameter is invalid. |
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1913 */ |
620
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diff
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|
1914 int fd_sess_state_retrieve_internal ( struct session_handler * handler, struct session * session, session_state ** state ); |
5
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1915 #define fd_sess_state_retrieve( _handler, _session, _state ) \ |
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1916 fd_sess_state_retrieve_internal( (_handler), (_session), (void *)(_state) ) |
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1917 |
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1918 |
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1919 /* For debug */ |
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1920 void fd_sess_dump(int level, struct session * session); |
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1921 void fd_sess_dump_hdl(int level, struct session_handler * handler); |
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1922 |
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Added two new interfaces on Zach requests http://lists.freediameter.net/pipermail/help/2012-January/000312.html and http://lists.freediameter.net/pipermail/help/2012-January/000311.html
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1923 /* For statistics / monitoring: get the number of struct session in memory */ |
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1924 int fd_sess_getcount(uint32_t *cnt); |
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1925 |
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1926 /*============================================================*/ |
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1927 /* ROUTING */ |
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1928 /*============================================================*/ |
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1929 |
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1930 /* The following functions are helpers for the routing module. |
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1931 The routing data is stored in the message itself. */ |
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1932 |
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1933 /* Structure that contains the routing data for a message */ |
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1934 struct rt_data; |
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1935 |
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1936 /* Following functions are helpers to create the routing data of a message */ |
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1937 int fd_rtd_init(struct rt_data ** rtd); |
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1938 void fd_rtd_free(struct rt_data ** rtd); |
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1939 |
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1940 /* Add a peer to the candidates list. */ |
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1941 int fd_rtd_candidate_add(struct rt_data * rtd, DiamId_t peerid, size_t peeridlen, DiamId_t realm, size_t realmlen); |
83
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1942 |
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1943 /* Remove a peer from the candidates (if it is found). The search is case-insensitive. */ |
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1944 void fd_rtd_candidate_del(struct rt_data * rtd, uint8_t * id, size_t idsz); |
83
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1945 |
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1946 /* Extract the list of valid candidates, and initialize their scores to 0 */ |
620
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1947 void fd_rtd_candidate_extract(struct rt_data * rtd, struct fd_list ** candidates, int ini_score); |
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1948 |
83
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1949 /* 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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1950 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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1951 |
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1952 /* The extracted list items have the following structure: */ |
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1953 struct rtd_candidate { |
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1954 struct fd_list chain; /* link in the list returned by the previous fct */ |
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1955 DiamId_t diamid; /* the diameter Id of the peer */ |
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1956 size_t diamidlen; /* cached size of the diamid string */ |
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1957 DiamId_t realm; /* the diameter realm of the peer */ |
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1958 size_t realmlen; /* cached size of realm */ |
83
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1959 int score; /* the current routing score for this peer, see fd_rt_out_register definition for details */ |
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1960 }; |
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1961 |
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1962 /* Reorder the list of peers by score */ |
83
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1963 int fd_rtd_candidate_reorder(struct fd_list * candidates); |
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1964 |
85
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1965 /* 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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1966 /* Beware that this could lead to routing loops */ |
83
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Started support for routing module
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1967 |
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1968 /*============================================================*/ |
0 | 1969 /* MESSAGES */ |
1970 /*============================================================*/ | |
1971 | |
1972 /* The following types are opaque */ | |
1973 struct msg; /* A message: command with children AVPs (possibly grand children) */ | |
1974 struct avp; /* AVP object */ | |
1975 | |
1976 /* Some details about chaining: | |
1977 * | |
1978 * A message is made of a header ( msg ) and 0 or more AVPs ( avp ). | |
1979 * The structure is a kind of tree, where some AVPs (grouped AVPs) can contain other AVPs. | |
871 | 1980 * Example: |
0 | 1981 * msg |
1982 * |-avp | |
1983 * |-gavp | |
1984 * | |-avp | |
1985 * | |-avp | |
1986 * | \-avp | |
1987 * |-avp | |
1988 * \-avp | |
1989 * | |
1990 */ | |
1991 | |
1992 /* The following type is used to point to either a msg or an AVP */ | |
1993 typedef void msg_or_avp; | |
1994 | |
1995 /* The Diameter protocol version */ | |
1996 #define DIAMETER_VERSION 1 | |
1997 | |
1998 /* In the two following types, some fields are marked (READONLY). | |
1999 * This means that the content of these fields will be overwritten by the daemon so modifying it is useless. | |
2000 */ | |
2001 | |
2002 /* The following structure represents the header of a message. All data is in host byte order. */ | |
2003 struct msg_hdr { | |
2004 uint8_t msg_version; /* (READONLY) Version of Diameter: must be DIAMETER_VERSION. */ | |
2005 uint32_t msg_length; /* (READONLY)(3 bytes) indicates the length of the message */ | |
2006 uint8_t msg_flags; /* Message flags: CMD_FLAG_* */ | |
2007 command_code_t msg_code; /* (3 bytes) the command-code. See dictionary-api.h for more detail */ | |
2008 application_id_t msg_appl; /* The application issuing this message */ | |
2009 uint32_t msg_hbhid; /* The Hop-by-Hop identifier of the message */ | |
2010 uint32_t msg_eteid; /* The End-to-End identifier of the message */ | |
2011 }; | |
2012 | |
2013 /* The following structure represents the visible content of an AVP. All data is in host byte order. */ | |
2014 struct avp_hdr { | |
2015 avp_code_t avp_code; /* the AVP Code */ | |
2016 uint8_t avp_flags; /* AVP_FLAG_* flags */ | |
2017 uint32_t avp_len; /* (READONLY)(Only 3 bytes are used) the length of the AVP as described in the RFC */ | |
2018 vendor_id_t avp_vendor; /* Only used if AVP_FLAG_VENDOR is present */ | |
2019 union avp_value *avp_value; /* pointer to the value of the AVP. NULL means that the value is not set / not understood. | |
2020 One should not directly change this value. Use the msg_avp_setvalue function instead. | |
2021 The content of the pointed structure can be changed directly, with this restriction: | |
2022 if the AVP is an OctetString, and you change the value of the pointer avp_value->os.data, then | |
2023 you must call free() on the previous value, and the new one must be free()-able. | |
2024 */ | |
2025 }; | |
2026 | |
2027 /* The following enum is used to browse inside message hierarchy (msg, gavp, avp) */ | |
2028 enum msg_brw_dir { | |
2029 MSG_BRW_NEXT = 1, /* Get the next element at the same level, or NULL if this is the last element. */ | |
2030 MSG_BRW_PREV, /* Get the previous element at the same level, or NULL if this is the first element. */ | |
2031 MSG_BRW_FIRST_CHILD, /* Get the first child AVP of this element, if any. */ | |
2032 MSG_BRW_LAST_CHILD, /* Get the last child AVP of this element, if any. */ | |
2033 MSG_BRW_PARENT, /* Get the parent element of this element, if any. Only the msg_t object has no parent. */ | |
2034 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. */ | |
2035 }; | |
2036 | |
2037 /* Some flags used in the functions bellow */ | |
892
b2e8f1a3ef76
Allow the content of the Failed-AVP to be parseable to bufferize the message. The content is only padded currently
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diff
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2038 #define AVPFL_SET_BLANK_VALUE 0x01 /* When creating an AVP, initialize its value to a blank area */ |
b2e8f1a3ef76
Allow the content of the Failed-AVP to be parseable to bufferize the message. The content is only padded currently
Sebastien Decugis <sdecugis@freediameter.net>
parents:
891
diff
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|
2039 #define AVPFL_SET_RAWDATA_FROM_AVP 0x02 /* When creating an AVP, initialize its rawdata area from an existing AVP -- it is only blank padding (for error reporting) */ |
b2e8f1a3ef76
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2040 #define AVPFL_MAX AVPFL_SET_RAWDATA_FROM_AVP /* The biggest valid flag value */ |
638
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2041 |
0 | 2042 #define MSGFL_ALLOC_ETEID 0x01 /* When creating a message, a new end-to-end ID is allocated and set in the message */ |
2043 #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 */ | |
112
6a294d977878
Default to add Session-Id in answers
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2044 #define MSGFL_ANSW_NOSID 0x04 /* When creating an answer message, do not add the Session-Id even if present in request */ |
6a294d977878
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2045 #define MSGFL_MAX MSGFL_ANSW_NOSID /* The biggest valid flag value */ |
0 | 2046 |
2047 /**************************************************/ | |
2048 /* Message creation, manipulation, disposal */ | |
2049 /**************************************************/ | |
2050 /* | |
2051 * FUNCTION: fd_msg_avp_new | |
2052 * | |
2053 * PARAMETERS: | |
2054 * model : Pointer to a DICT_AVP dictionary object describing the avp to create, or NULL. | |
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2055 * flags : Flags to use in creation (AVPFL_*). |
0 | 2056 * avp : Upon success, pointer to the new avp is stored here. |
2057 * | |
2058 * DESCRIPTION: | |
2059 * Create a new AVP instance. | |
2060 * | |
2061 * RETURN VALUE: | |
2062 * 0 : The AVP is created. | |
2063 * EINVAL : A parameter is invalid. | |
2064 * (other standard errors may be returned, too, with their standard meaning. Example: | |
2065 * ENOMEM : Memory allocation for the new avp failed.) | |
2066 */ | |
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2067 int fd_msg_avp_new ( struct dict_object * model, int flags, struct avp ** avp ); |
0 | 2068 |
2069 /* | |
2070 * FUNCTION: fd_msg_new | |
2071 * | |
2072 * PARAMETERS: | |
2073 * model : Pointer to a DICT_COMMAND dictionary object describing the message to create, or NULL. | |
2074 * flags : combination of MSGFL_* flags. | |
2075 * msg : Upon success, pointer to the new message is stored here. | |
2076 * | |
2077 * DESCRIPTION: | |
2078 * Create a new empty Diameter message. | |
2079 * | |
2080 * RETURN VALUE: | |
2081 * 0 : The message is created. | |
2082 * EINVAL : A parameter is invalid. | |
2083 * (other standard errors may be returned, too, with their standard meaning. Example: | |
2084 * ENOMEM : Memory allocation for the new message failed.) | |
2085 */ | |
620
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2086 int fd_msg_new ( struct dict_object * model, int flags, struct msg ** msg ); |
0 | 2087 |
2088 /* | |
2089 * FUNCTION: msg_new_answer_from_req | |
2090 * | |
2091 * PARAMETERS: | |
2092 * dict : Pointer to the dictionary containing the model of the query. | |
2093 * msg : The location of the query on function call. Updated by the location of answer message on return. | |
2094 * flag : Pass MSGFL_ANSW_ERROR to indicate if the answer is an error message (will set the 'E' bit) | |
2095 * | |
2096 * DESCRIPTION: | |
2097 * This function creates the empty answer message corresponding to a request. | |
2098 * The header is set properly (R flag, ccode, appid, hbhid, eteid) | |
2099 * The Session-Id AVP is copied if present. | |
2100 * The calling code should usually call fd_msg_rescode_set function on the answer. | |
2101 * Upon return, the original query may be retrieved by calling fd_msg_answ_getq on the message. | |
2102 * | |
2103 * RETURN VALUE: | |
2104 * 0 : Operation complete. | |
2105 * !0 : an error occurred. | |
2106 */ | |
620
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2107 int fd_msg_new_answer_from_req ( struct dictionary * dict, struct msg ** msg, int flag ); |
0 | 2108 |
2109 /* | |
2110 * FUNCTION: fd_msg_browse | |
2111 * | |
2112 * PARAMETERS: | |
2113 * reference : Pointer to a struct msg or struct avp. | |
2114 * dir : Direction for browsing | |
2115 * found : If not NULL, updated with the element that has been found, if any, or NULL if no element was found / an error occurred. | |
2116 * 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. | |
2117 * | |
2118 * DESCRIPTION: | |
2119 * Explore the content of a message object (hierarchy). If "found" is null, only error checking is performed. | |
2120 * If "depth" is provided, it is updated as follow on successful function return: | |
2121 * - not modified for MSG_BRW_NEXT and MSG_BRW_PREV. | |
2122 * - *depth = *depth + 1 for MSG_BRW_FIRST_CHILD and MSG_BRW_LAST_CHILD. | |
2123 * - *depth = *depth - 1 for MSG_BRW_PARENT. | |
2124 * - *depth = *depth + X for MSG_BRW_WALK, with X between 1 (returned the 1st child) and -N (returned the Nth parent's next). | |
2125 * | |
2126 * RETURN VALUE: | |
2127 * 0 : found has been updated (if non NULL). | |
2128 * EINVAL : A parameter is invalid. | |
2129 * ENOENT : No element has been found where requested, and "found" was NULL (otherwise, *found is set to NULL and 0 is returned). | |
2130 */ | |
620
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2131 int fd_msg_browse_internal ( msg_or_avp * reference, enum msg_brw_dir dir, msg_or_avp ** found, int * depth ); |
0 | 2132 /* Macro to avoid having to cast the third parameter everywhere */ |
2133 #define fd_msg_browse( ref, dir, found, depth ) \ | |
2134 fd_msg_browse_internal( (ref), (dir), (void *)(found), (depth) ) | |
2135 | |
2136 | |
2137 /* | |
2138 * FUNCTION: fd_msg_avp_add | |
2139 * | |
2140 * PARAMETERS: | |
2141 * reference : Pointer to a valid msg or avp. | |
2142 * dir : location where the new AVP should be inserted, relative to the reference. MSG_BRW_PARENT and MSG_BRW_WALK are not valid. | |
2143 * avp : pointer to the AVP object that must be inserted. | |
2144 * | |
2145 * DESCRIPTION: | |
2146 * Adds an AVP into an object that can contain it: grouped AVP or message. | |
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2147 * Note that the added AVP will be freed at the same time as the object it is added to, |
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2148 * so it should not be freed after the call to this function. |
0 | 2149 * |
2150 * RETURN VALUE: | |
2151 * 0 : The AVP has been added. | |
2152 * EINVAL : A parameter is invalid. | |
2153 */ | |
2154 int fd_msg_avp_add ( msg_or_avp * reference, enum msg_brw_dir dir, struct avp *avp); | |
2155 | |
2156 /* | |
2157 * FUNCTION: fd_msg_search_avp | |
2158 * | |
2159 * PARAMETERS: | |
2160 * msg : The message structure in which to search the AVP. | |
2161 * what : The dictionary model of the AVP to search. | |
2162 * avp : location where the AVP reference is stored if found. | |
2163 * | |
2164 * DESCRIPTION: | |
2165 * Search the first top-level AVP of a given model inside a message. | |
2166 * Note: only the first instance of the AVP is returned by this function. | |
2167 * Note: only top-level AVPs are searched, not inside grouped AVPs. | |
2168 * Use msg_browse if you need more advanced research features. | |
2169 * | |
2170 * RETURN VALUE: | |
2171 * 0 : The AVP has been found. | |
2172 * EINVAL : A parameter is invalid. | |
2173 * ENOENT : No AVP has been found, and "avp" was NULL (otherwise, *avp is set to NULL and 0 returned). | |
2174 */ | |
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2175 int fd_msg_search_avp ( struct msg * msg, struct dict_object * what, struct avp ** avp ); |
0 | 2176 |
2177 /* | |
2178 * FUNCTION: fd_msg_free | |
2179 * | |
2180 * PARAMETERS: | |
2181 * object : pointer to the message or AVP object that must be unlinked and freed. | |
2182 * | |
2183 * DESCRIPTION: | |
2184 * Unlink and free a message or AVP object and its children. | |
2185 * If the object is an AVP linked into a message, the AVP is removed before being freed. | |
2186 * | |
2187 * RETURN VALUE: | |
2188 * 0 : The message has been freed. | |
2189 * EINVAL : A parameter is invalid. | |
2190 */ | |
2191 int fd_msg_free ( msg_or_avp * object ); | |
2192 | |
2193 /***************************************/ | |
2194 /* Dump functions */ | |
2195 /***************************************/ | |
2196 /* | |
2197 * FUNCTION: fd_msg_dump_* | |
2198 * | |
2199 * PARAMETERS: | |
2200 * level : the log level (INFO, FULL, ...) at which the object is dumped | |
2201 * obj : A msg or avp object. | |
2202 * | |
2203 * DESCRIPTION: | |
2204 * These functions dump the content of a message to the debug log | |
2205 * either recursively or only the object itself. | |
2206 * | |
2207 * RETURN VALUE: | |
2208 * - | |
2209 */ | |
2210 void fd_msg_dump_walk ( int level, msg_or_avp *obj ); | |
2211 void fd_msg_dump_one ( int level, msg_or_avp *obj ); | |
2212 | |
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2213 /* |
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2214 * FUNCTION: fd_msg_log |
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2215 * |
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2216 * PARAMETERS: |
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2217 * cause : Context for calling this function. This allows the log facility to be configured precisely. |
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2218 * msg : The message to log. |
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2219 * prefix_format: Printf-style format message that is printed ahead of the message. Might be reason for drop or so. |
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2220 * |
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2221 * DESCRIPTION: |
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2222 * This function is called when a Diameter message reaches some particular points in the fD framework. |
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2223 * The actual effect is configurable: log in a separate file, dump in the debug log, etc. |
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2224 * |
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2225 * RETURN VALUE: |
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2226 * - |
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2227 */ |
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2228 enum fd_msg_log_cause { |
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2229 FD_MSG_LOG_DROPPED = 0, /* message has been dropped by the framework */ |
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2230 FD_MSG_LOG_RECEIVED, /* message received from the network */ |
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2231 FD_MSG_LOG_SENT, /* message sent to another peer */ |
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2232 FD_MSG_LOG_NODELIVER, /* message could not be delivered to any peer */ |
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2233 FD_MSG_LOG_TIMING /* profiling messages */ |
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2234 }; |
895
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2235 #define FD_MSG_LOG_MAX FD_MSG_LOG_TIMING |
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2236 void fd_msg_log( enum fd_msg_log_cause cause, struct msg * msg, const char * prefix_format, ... ); |
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2237 |
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2238 /* configure the msg_log facility */ |
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2239 enum fd_msg_log_method { |
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2240 FD_MSG_LOGTO_DEBUGONLY = 0, /* Simply log the message with other debug information, at the INFO level. This is default */ |
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2241 FD_MSG_LOGTO_FILE, /* Messages are dumped in a single file, defined in arg */ |
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2242 FD_MSG_LOGTO_DIR /* Messages are dumped in different files within one directory defined in arg. */ |
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2243 }; |
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2244 int fd_msg_log_config(enum fd_msg_log_cause cause, enum fd_msg_log_method method, const char * arg); |
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2245 void fd_msg_log_init(struct dictionary *dict); |
0 | 2246 |
2247 /*********************************************/ | |
2248 /* Message metadata management functions */ | |
2249 /*********************************************/ | |
2250 /* | |
2251 * FUNCTION: fd_msg_model | |
2252 * | |
2253 * PARAMETERS: | |
2254 * reference : Pointer to a valid msg or avp. | |
2255 * model : on success, pointer to the dictionary model of this command or AVP. NULL if the model is unknown. | |
2256 * | |
2257 * DESCRIPTION: | |
2258 * Retrieve the dictionary object describing this message or avp. If the object is unknown or the fd_msg_parse_dict has not been called, | |
2259 * *model is set to NULL. | |
2260 * | |
2261 * RETURN VALUE: | |
2262 * 0 : The model has been set. | |
2263 * EINVAL : A parameter is invalid. | |
2264 */ | |
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2265 int fd_msg_model ( msg_or_avp * reference, struct dict_object ** model ); |
0 | 2266 |
2267 /* | |
2268 * FUNCTION: fd_msg_hdr | |
2269 * | |
2270 * PARAMETERS: | |
2271 * msg : Pointer to a valid message object. | |
2272 * pdata : Upon success, pointer to the msg_hdr structure of this message. The fields may be modified. | |
2273 * | |
2274 * DESCRIPTION: | |
2275 * Retrieve location of modifiable section of a message. | |
2276 * | |
2277 * RETURN VALUE: | |
2278 * 0 : The location has been written. | |
2279 * EINVAL : A parameter is invalid. | |
2280 */ | |
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2281 int fd_msg_hdr ( struct msg *msg, struct msg_hdr ** pdata ); |
0 | 2282 |
2283 /* | |
2284 * FUNCTION: fd_msg_avp_hdr | |
2285 * | |
2286 * PARAMETERS: | |
2287 * avp : Pointer to a valid avp object. | |
2288 * pdata : Upon success, pointer to the avp_hdr structure of this avp. The fields may be modified. | |
2289 * | |
2290 * DESCRIPTION: | |
2291 * Retrieve location of modifiable data of an avp. | |
2292 * | |
2293 * RETURN VALUE: | |
2294 * 0 : The location has been written. | |
2295 * EINVAL : A parameter is invalid. | |
2296 */ | |
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2297 int fd_msg_avp_hdr ( struct avp *avp, struct avp_hdr ** pdata ); |
0 | 2298 |
2299 /* | |
2300 * FUNCTION: fd_msg_answ_associate, fd_msg_answ_getq, fd_msg_answ_detach | |
2301 * | |
2302 * PARAMETERS: | |
2303 * answer : the received answer message | |
2304 * query : the corresponding query that had been sent | |
2305 * | |
2306 * DESCRIPTION: | |
2307 * fd_msg_answ_associate associates a query msg with the received answer. | |
2308 * Query is retrieved with fd_msg_answ_getq. | |
2309 * If answer message is freed, the query is also freed. | |
2310 * If the msg_answ_detach function is called, the association is removed. | |
2311 * This is meant to be called from the daemon only. | |
2312 * | |
2313 * RETURN VALUE: | |
2314 * 0 : ok | |
2315 * EINVAL: a parameter is invalid | |
2316 */ | |
2317 int fd_msg_answ_associate( struct msg * answer, struct msg * query ); | |
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2318 int fd_msg_answ_getq ( struct msg * answer, struct msg ** query ); |
0 | 2319 int fd_msg_answ_detach ( struct msg * answer ); |
2320 | |
2321 /* | |
2322 * FUNCTION: fd_msg_anscb_associate, fd_msg_anscb_get | |
2323 * | |
2324 * PARAMETERS: | |
2325 * msg : the answer message | |
2326 * anscb : the callback to associate with the message | |
2327 * data : the data to pass to the callback | |
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2328 * timeout : (optional, use NULL if no timeout) a timeout associated with calling the cb. |
0 | 2329 * |
2330 * DESCRIPTION: | |
2331 * Associate or retrieve a callback with an answer message. | |
2332 * This is meant to be called from the daemon only. | |
2333 * | |
2334 * RETURN VALUE: | |
2335 * 0 : ok | |
2336 * EINVAL: a parameter is invalid | |
2337 */ | |
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2338 int fd_msg_anscb_associate( struct msg * msg, void ( *anscb)(void *, struct msg **), void * data, const struct timespec *timeout ); |
0 | 2339 int fd_msg_anscb_get ( struct msg * msg, void (**anscb)(void *, struct msg **), void ** data ); |
649
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2340 struct timespec *fd_msg_anscb_gettimeout( struct msg * msg ); /* returns NULL or a valid non-0 timespec */ |
0 | 2341 |
2342 /* | |
2343 * FUNCTION: fd_msg_rt_associate, fd_msg_rt_get | |
2344 * | |
2345 * PARAMETERS: | |
2346 * msg : the query message to be sent | |
2347 * list : the ordered list of possible next-peers | |
2348 * | |
2349 * DESCRIPTION: | |
2350 * Associate a routing list with a query, and retrieve it. | |
2351 * If the message is freed, the list is also freed. | |
2352 * | |
2353 * RETURN VALUE: | |
2354 * 0 : ok | |
2355 * EINVAL: a parameter is invalid | |
2356 */ | |
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2357 int fd_msg_rt_associate( struct msg * msg, struct rt_data ** rtd ); |
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2358 int fd_msg_rt_get ( struct msg * msg, struct rt_data ** rtd ); |
0 | 2359 |
2360 /* | |
2361 * FUNCTION: fd_msg_is_routable | |
2362 * | |
2363 * PARAMETERS: | |
2364 * msg : A msg object. | |
2365 * | |
2366 * DESCRIPTION: | |
2367 * This function returns a boolean telling if a given message is routable in the Diameter network, | |
2368 * or if it is a local link message only (ex: CER/CEA, DWR/DWA, ...). | |
2369 * | |
2370 * RETURN VALUE: | |
2371 * 0 : The message is not routable / an error occurred. | |
2372 * 1 : The message is routable. | |
2373 */ | |
2374 int fd_msg_is_routable ( struct msg * msg ); | |
2375 | |
2376 /* | |
2377 * FUNCTION: fd_msg_source_(g/s)et | |
2378 * | |
2379 * PARAMETERS: | |
2380 * msg : A msg object. | |
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2381 * diamid,len : The diameter id of the peer from which this message was received. |
0 | 2382 * add_rr : if true, a Route-Record AVP is added to the message with content diamid. In that case, dict must be supplied. |
2383 * dict : a dictionary with definition of Route-Record AVP (if add_rr is true) | |
2384 * | |
2385 * DESCRIPTION: | |
2386 * Store or retrieve the diameted id of the peer from which this message was received. | |
2387 * Will be used for example by the routing module to add the Route-Record AVP in forwarded requests, | |
2388 * or to direct answers to the appropriate peer. | |
2389 * | |
2390 * RETURN VALUE: | |
2391 * 0 : Operation complete. | |
2392 * !0 : an error occurred. | |
2393 */ | |
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2394 int fd_msg_source_set( struct msg * msg, DiamId_t diamid, size_t diamidlen, int add_rr, struct dictionary * dict ); |
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2395 int fd_msg_source_get( struct msg * msg, DiamId_t *diamid, size_t * diamidlen ); |
0 | 2396 |
2397 /* | |
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2398 * FUNCTION: fd_msg_ts_* |
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2399 * |
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2400 * PARAMETERS: |
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2401 * msg : A msg object. |
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2402 * ts : A struct timespec pointer, indexed on CLOCK_REALTIME |
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2403 * |
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2404 * DESCRIPTION: |
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2405 * Associate or retrieve timestamps meaningful for the message. |
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2406 * A timestamp with a value of { 0, 0 } means: not set. |
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2407 * |
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2408 * RETURN VALUE: |
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2409 * 0 : Operation complete. |
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2410 * !0 : an error occurred. |
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2411 */ |
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2412 /* when msg was received from network */ |
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2413 int fd_msg_ts_set_recv( struct msg * msg, struct timespec * ts ); |
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2414 int fd_msg_ts_get_recv( struct msg * msg, struct timespec * ts ); |
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2415 int fd_msg_ts_set_sent( struct msg * msg, struct timespec * ts ); |
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2416 int fd_msg_ts_get_sent( struct msg * msg, struct timespec * ts ); |
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2417 |
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2418 |
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2419 /* |
0 | 2420 * FUNCTION: fd_msg_eteid_get |
2421 * | |
2422 * PARAMETERS: | |
2423 * - | |
2424 * | |
2425 * DESCRIPTION: | |
2426 * Get a new unique end-to-end id value for the local peer. | |
2427 * | |
2428 * RETURN VALUE: | |
2429 * The new assigned value. No error code is defined. | |
2430 */ | |
2431 uint32_t fd_msg_eteid_get ( void ); | |
2432 | |
2433 | |
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2434 /* |
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2435 * FUNCTION: fd_msg_sess_get |
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2436 * |
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2437 * PARAMETERS: |
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2438 * dict : the dictionary that contains the Session-Id AVP definition |
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2439 * msg : A valid message. |
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2440 * session : Location to store the session pointer when retrieved. |
653
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Added sample C++ file in _sample extension
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2441 * isnew : Indicates if the session has been created. |
85
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2442 * |
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2443 * DESCRIPTION: |
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2444 * This function retrieves or creates the session object corresponding to a message. |
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2445 * If the message does not contain a Session-Id AVP, *session == NULL on return. |
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2446 * Note that the Session-Id AVP must never be modified after created in a message. |
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2447 * |
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2448 * RETURN VALUE: |
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2449 * 0 : success |
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2450 * !0 : standard error code. |
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2451 */ |
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2452 int fd_msg_sess_get(struct dictionary * dict, struct msg * msg, struct session ** session, int * isnew); |
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2453 |
0 | 2454 /***************************************/ |
2455 /* Manage AVP values */ | |
2456 /***************************************/ | |
2457 | |
2458 /* | |
2459 * FUNCTION: fd_msg_avp_setvalue | |
2460 * | |
2461 * PARAMETERS: | |
2462 * avp : Pointer to a valid avp object with a NULL avp_value pointer. The model must be known. | |
2463 * value : pointer to an avp_value. The content will be COPIED into the internal storage area. | |
2464 * If data type is an octetstring, the data is also copied. | |
2465 * If value is a NULL pointer, the previous data is erased and value is unset in the AVP. | |
2466 * | |
2467 * DESCRIPTION: | |
2468 * Initialize the avp_value field of an AVP header. | |
2469 * | |
2470 * RETURN VALUE: | |
2471 * 0 : The avp_value pointer has been set. | |
2472 * EINVAL : A parameter is invalid. | |
2473 */ | |
2474 int fd_msg_avp_setvalue ( struct avp *avp, union avp_value *value ); | |
2475 | |
2476 /* | |
2477 * FUNCTION: fd_msg_avp_value_encode | |
2478 * | |
2479 * PARAMETERS: | |
2480 * avp : Pointer to a valid avp object with a NULL avp_value. The model must be known. | |
2481 * data : Pointer to the data that must be encoded as AVP value and stored in the AVP. | |
2482 * This is only valid for AVPs of derived type for which type_data_encode callback is set. (ex: Address type) | |
2483 * | |
2484 * DESCRIPTION: | |
2485 * Initialize the avp_value field of an AVP object from formatted data, using the AVP's type "type_data_encode" callback. | |
2486 * | |
2487 * RETURN VALUE: | |
2488 * 0 : The avp_value has been set. | |
2489 * EINVAL : A parameter is invalid. | |
2490 * ENOTSUP : There is no appropriate callback registered with this AVP's type. | |
2491 */ | |
2492 int fd_msg_avp_value_encode ( void *data, struct avp *avp ); | |
2493 /* | |
2494 * FUNCTION: fd_msg_avp_value_interpret | |
2495 * | |
2496 * PARAMETERS: | |
2497 * avp : Pointer to a valid avp object with a non-NULL avp_value value. | |
2498 * data : Upon success, formatted interpretation of the AVP value is stored here. | |
2499 * | |
2500 * DESCRIPTION: | |
2501 * Interpret the content of an AVP of Derived type and store the result in data pointer. The structure | |
2502 * of the data pointer is dependent on the AVP type. This function calls the "type_data_interpret" callback | |
2503 * of the type. | |
2504 * | |
2505 * RETURN VALUE: | |
2506 * 0 : The avp_value has been set. | |
2507 * EINVAL : A parameter is invalid. | |
2508 * ENOTSUP : There is no appropriate callback registered with this AVP's type. | |
2509 */ | |
2510 int fd_msg_avp_value_interpret ( struct avp *avp, void *data ); | |
2511 | |
2512 | |
2513 /***************************************/ | |
2514 /* Message parsing functions */ | |
2515 /***************************************/ | |
2516 | |
2517 /* | |
2518 * FUNCTION: fd_msg_bufferize | |
2519 * | |
2520 * PARAMETERS: | |
2521 * msg : A valid msg object. All AVPs must have a value set. | |
2522 * buffer : Upon success, this points to a buffer (malloc'd) containing the message ready for network transmission (or security transformations). | |
2523 * The buffer may be freed after use. | |
2524 * len : if not NULL, the size of the buffer is written here. In any case, this size is updated in the msg header. | |
2525 * | |
2526 * DESCRIPTION: | |
2527 * Renders a message in memory as a buffer that can be sent over the network to the next peer. | |
2528 * | |
2529 * RETURN VALUE: | |
2530 * 0 : The location has been written. | |
2531 * EINVAL : The buffer does not contain a valid Diameter message. | |
2532 * ENOMEM : Unable to allocate enough memory to create the buffer object. | |
2533 */ | |
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2534 int fd_msg_bufferize ( struct msg * msg, uint8_t ** buffer, size_t * len ); |
0 | 2535 |
2536 /* | |
2537 * FUNCTION: fd_msg_parse_buffer | |
2538 * | |
2539 * PARAMETERS: | |
2540 * buffer : Pointer to a buffer containing a message received from the network. | |
2541 * buflen : the size in bytes of the buffer. | |
2542 * msg : Upon success, this points to a valid msg object. No AVP value is resolved in this object, nor grouped AVP. | |
2543 * | |
2544 * DESCRIPTION: | |
2545 * This function parses a buffer an creates a msg object to represent the structure of the message. | |
2546 * Since no dictionary lookup is performed, the values of the AVPs are not interpreted. To interpret the values, | |
2547 * the returned message object must be passed to fd_msg_parse_dict function. | |
2548 * The buffer pointer is saved inside the message and will be freed when not needed anymore. | |
2549 * | |
2550 * RETURN VALUE: | |
2551 * 0 : The location has been written. | |
2552 * ENOMEM : Unable to allocate enough memory to create the msg object. | |
2553 * EBADMSG : The buffer does not contain a valid Diameter message (or is truncated). | |
2554 * EINVAL : A parameter is invalid. | |
2555 */ | |
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2556 int fd_msg_parse_buffer ( uint8_t ** buffer, size_t buflen, struct msg ** msg ); |
0 | 2557 |
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2558 /* Parsing Error Information structure */ |
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2559 struct fd_pei { |
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2560 char * pei_errcode; /* name of the error code to use */ |
891
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Tentative fix for the parse_or_error function
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2561 struct avp * pei_avp; /* pointer to invalid (in original message) or missing AVP (to be freed) */ |
114
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2562 char * pei_message; /* Overwrite default message if needed */ |
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2563 int pei_protoerr; /* do we set the 'E' bit in the error message ? */ |
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2564 }; |
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2565 |
0 | 2566 /* |
2567 * FUNCTION: fd_msg_parse_dict | |
2568 * | |
2569 * PARAMETERS: | |
2570 * object : A msg or AVP object as returned by fd_msg_parse_buffer. | |
2571 * dict : the dictionary containing the objects definitions to use for resolving all AVPs. | |
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2572 * error_info : If not NULL, will contain the detail about error upon return. May be used to generate an error reply. |
0 | 2573 * |
2574 * DESCRIPTION: | |
2575 * This function looks up for the command and each children AVP definitions in the dictionary. | |
2576 * If the dictionary definition is found, avp_model is set and the value of the AVP is interpreted accordingly and: | |
2577 * - for grouped AVPs, the children AVP are created and interpreted also. | |
2578 * - for numerical AVPs, the value is converted to host byte order and saved in the avp_value field. | |
2579 * - for octetstring AVPs, the string is copied into a new buffer and its address is saved in avp_value. | |
2580 * If the dictionary definition is not found, avp_model is set to NULL and | |
2581 * the content of the AVP is saved as an octetstring in an internal structure. avp_value is NULL. | |
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2582 * 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 | 2583 * |
2584 * RETURN VALUE: | |
2585 * 0 : The message has been fully parsed as described. | |
2586 * EINVAL : The msg parameter is invalid for this operation. | |
2587 * ENOMEM : Unable to allocate enough memory to complete the operation. | |
2588 * ENOTSUP : No dictionary definition for the command or one of the mandatory AVP was found. | |
2589 */ | |
620
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2590 int fd_msg_parse_dict ( msg_or_avp * object, struct dictionary * dict, struct fd_pei * error_info ); |
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2591 |
0 | 2592 /* |
2593 * FUNCTION: fd_msg_parse_rules | |
2594 * | |
2595 * PARAMETERS: | |
2596 * object : A msg or grouped avp object that must be verified. | |
2597 * dict : The dictionary containing the rules definitions. | |
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2598 * error_info : If not NULL, the first problem information will be saved here. |
0 | 2599 * |
2600 * DESCRIPTION: | |
2601 * Check that the children of the object do not conflict with the dictionary rules (ABNF compliance). | |
2602 * | |
2603 * RETURN VALUE: | |
2604 * 0 : The message has been fully parsed and complies to the defined rules. | |
2605 * EBADMSG : A conflict was detected, or a mandatory AVP is unknown in the dictionary. | |
2606 * EINVAL : The msg or avp object is invalid for this operation. | |
2607 * ENOMEM : Unable to allocate enough memory to complete the operation. | |
2608 */ | |
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2609 int fd_msg_parse_rules ( msg_or_avp * object, struct dictionary * dict, struct fd_pei * error_info); |
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2610 |
0 | 2611 |
2612 | |
2613 /* | |
2614 * FUNCTION: fd_msg_update_length | |
2615 * | |
2616 * PARAMETERS: | |
2617 * object : Pointer to a valid msg or avp. | |
2618 * | |
2619 * DESCRIPTION: | |
2620 * Update the length field of the object passed as parameter. | |
2621 * As a side effect, all children objects are also updated. Therefore, all avp_value fields of | |
2622 * the children AVPs must be set, or an error will occur. | |
2623 * | |
2624 * RETURN VALUE: | |
2625 * 0 : The size has been recomputed. | |
2626 * EINVAL : A parameter is invalid. | |
2627 */ | |
2628 int fd_msg_update_length ( msg_or_avp * object ); | |
2629 | |
2630 | |
7
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2631 /*============================================================*/ |
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2632 /* DISPATCH */ |
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2633 /*============================================================*/ |
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2634 |
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2635 /* Dispatch module (passing incoming messages to extensions registered callbacks) |
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2636 * is split between the library and the daemon. |
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2637 * |
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2638 * The library provides the support for associating dispatch callbacks with |
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2639 * dictionary objects. |
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2640 * |
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2641 * The daemon is responsible for calling the callbacks for a message when appropriate. |
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2642 * |
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2643 * |
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2644 * The dispatch module has two main roles: |
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2645 * - help determine if a message can be handled locally (during the routing step) |
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2646 * This decision involves only the application-id of the message. |
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2647 * - pass the message to the callback(s) that will handle it (during the dispatch step) |
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2648 * |
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2649 * The first role is handled by the daemon. |
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2650 * |
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2651 * About the second, these are the possibilities for registering a dispatch callback: |
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2652 * |
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2653 * -> For All messages. |
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2654 * This callback is called for all messages that are handled locally. This should be used only |
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2655 * for debug purpose. |
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2656 * |
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2657 * -> by AVP value (constants only). |
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2658 * This callback will be called when a message is received and contains an AVP with a specified enumerated value. |
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2659 * |
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2660 * -> by AVP. |
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2661 * This callback will be called when the received message contains a certain AVP. |
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|
2662 * |
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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2663 * -> by command-code. |
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2664 * This callback will be called when the message is a specific command (and 'R' flag). |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2665 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2666 * -> by application. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2667 * This callback will be called when the message has a specific application-id. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2668 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2669 * ( by vendor: would this be useful? it may be added later) |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2670 */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2671 enum disp_how { |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2672 DISP_HOW_ANY = 1, /* Any message. This should be only used for debug. */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2673 DISP_HOW_APPID, /* Any message with the specified application-id */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2674 DISP_HOW_CC, /* Messages of the specified command-code (request or answer). App id may be specified. */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2675 DISP_HOW_AVP, /* Messages containing a specific AVP. Command-code and App id may be specified. */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2676 DISP_HOW_AVP_ENUMVAL /* Messages containing a specific AVP with a specific enumerated value. Command-code and App id may be specified. */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2677 }; |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2678 /* |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2679 * Several criteria may be selected at the same time, for example command-code AND application id. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2680 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2681 * If several callbacks are registered for the same object, they are called in the order they were registered. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2682 * The order in which the callbacks are called is: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2683 * DISP_HOW_ANY |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2684 * DISP_HOW_AVP_ENUMVAL & DISP_HOW_AVP |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2685 * DISP_HOW_CC |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2686 * DISP_HOW_APPID |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2687 */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2688 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2689 /* When a callback is registered, a "when" argument is passed in addition to the disp_how value, |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2690 * to specify which values the criteria must match. */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2691 struct disp_when { |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2692 struct dict_object * app; |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2693 struct dict_object * command; |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2694 struct dict_object * avp; |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2695 struct dict_object * value; |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2696 }; |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2697 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2698 /* Note that all the dictionary objects should really belong to the same dictionary! |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2699 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2700 * Here is the details on this "when" argument, depending on the disp_how value. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2701 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2702 * DISP_HOW_ANY. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2703 * In this case, "when" must be NULL. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2704 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2705 * DISP_HOW_APPID. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2706 * Only the "app_id" field must be set, other fields are ignored. It points to a dictionary object of type DICT_APPLICATION. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2707 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2708 * DISP_HOW_CC. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2709 * The "command" field must be defined and point to a dictionary object of type DICT_COMMAND. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2710 * The "app_id" may be also set. In the case it is set, it restricts the callback to be called only with this command-code and app id. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2711 * The other fields are ignored. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2712 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2713 * DISP_HOW_AVP. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2714 * The "avp" field of the structure must be set and point to a dictionary object of type DICT_AVP. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2715 * The "app_id" field may be set to restrict the messages matching to a specific app id. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2716 * The "command" field may also be set to a valid DICT_COMMAND object. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2717 * The content of the "value" field is ignored. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2718 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2719 * DISP_HOW_AVP_ENUMVAL. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2720 * All fields have the same constraints and meaning as in DISP_REG_AVP. In addition, the "value" field must be set |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2721 * and points to a valid DICT_ENUMVAL object. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2722 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2723 * Here is a sumary of the fields: ( M : must be set; m : may be set; 0 : ignored ) |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2724 * field: app_id command avp value |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2725 * APPID : M 0 0 0 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2726 * CC : m M 0 0 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2727 * AVP : m m M 0 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2728 * ENUMVA: m m M M |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2729 */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2730 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2731 enum disp_action { |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2732 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>
parents:
88
diff
changeset
|
2733 DISP_ACT_SEND, /* The updated message must be sent. No further callback is called. */ |
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
88
diff
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|
2734 DISP_ACT_ERROR /* An error must be created and sent as a reply -- not valid for callbacks, only for fd_msg_dispatch. */ |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2735 }; |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2736 /* The callbacks that are registered have the following prototype: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2737 * int dispatch_callback( struct msg ** msg, struct avp * avp, struct session * session, enum disp_action * action ); |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2738 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2739 * CALLBACK: dispatch_callback |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2740 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2741 * PARAMETERS: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2742 * 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
changeset
|
2743 * 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>
parents:
6
diff
changeset
|
2744 * 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>
parents:
638
diff
changeset
|
2745 * opaque : An opaque pointer that is registered along the session handler. |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2746 * action : upon return, this tells the daemon what to do next. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2747 * |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2748 * DESCRIPTION: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2749 * Called when a received message matchs the condition for which the callback was registered. |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2750 * This callback may do any kind of processing on the message, including: |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2751 * - create an answer for a request. |
e5af94b04946
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parents:
6
diff
changeset
|
2752 * - proxy a request or message, add / remove the Proxy-Info AVP, then forward the message. |
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2753 * - update a routing table or start a connection with a new peer, then forward the message. |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2754 * - ... |
e5af94b04946
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parents:
6
diff
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|
2755 * |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2756 * When *action == DISP_ACT_SEND on callback return, the msg pointed by *msg is passed to the routing module for sending. |
e5af94b04946
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parents:
6
diff
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|
2757 * When *action == DISP_ACT_CONT, the next registered callback is called. |
e5af94b04946
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parents:
6
diff
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|
2758 * When the last callback gives also DISP_ACT_CONT action value, a default handler is called. It's behavior is as follow: |
e5af94b04946
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6
diff
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|
2759 * - if the message is an answer, it is discarded. |
e5af94b04946
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parents:
6
diff
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|
2760 * - if the message is a request, it is passed again to the routing stack, and marked as non-local handling. |
e5af94b04946
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6
diff
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|
2761 * |
e5af94b04946
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6
diff
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|
2762 * RETURN VALUE: |
e5af94b04946
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parents:
6
diff
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|
2763 * 0 : The callback executed successfully and updated *action appropriately. |
e5af94b04946
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parents:
6
diff
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|
2764 * !0 : standard errors. In case of error, the message is discarded. |
e5af94b04946
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6
diff
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|
2765 */ |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2766 |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2767 /* This structure represents a handler for a registered callback, allowing its de-registration */ |
e5af94b04946
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6
diff
changeset
|
2768 struct disp_hdl; |
e5af94b04946
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6
diff
changeset
|
2769 |
e5af94b04946
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6
diff
changeset
|
2770 /* |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2771 * FUNCTION: fd_disp_register |
e5af94b04946
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6
diff
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|
2772 * |
e5af94b04946
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6
diff
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|
2773 * PARAMETERS: |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2774 * cb : The callback function to register (see dispatch_callback description above). |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2775 * how : How the callback must be registered. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2776 * when : Values that must match, depending on the how argument. |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
2777 * opaque : A pointer that is passed back to the handler. The content is not interpreted by the framework. |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2778 * handle : On success, a handler to the registered callback is stored here if not NULL. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2779 * This handler can be used to unregister the cb. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2780 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2781 * DESCRIPTION: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2782 * Register a new callback to handle messages delivered locally. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2783 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2784 * RETURN VALUE: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2785 * 0 : The callback is registered. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2786 * EINVAL : A parameter is invalid. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2787 * ENOMEM : Not enough memory to complete the operation |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2788 */ |
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
|
2789 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
|
2790 enum disp_how how, struct disp_when * when, void * opaque, struct disp_hdl ** handle ); |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2791 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2792 /* |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2793 * FUNCTION: fd_disp_unregister |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2794 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2795 * PARAMETERS: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2796 * handle : Location of the handle of the callback that must be unregistered. |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
2797 * opaque : If not NULL, the opaque data that was registered is restored here. |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2798 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2799 * DESCRIPTION: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2800 * Removes a callback previously registered by fd_disp_register. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2801 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2802 * RETURN VALUE: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2803 * 0 : The callback is unregistered. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2804 * EINVAL : A parameter is invalid. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2805 */ |
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
|
2806 int fd_disp_unregister ( struct disp_hdl ** handle, void ** opaque ); |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2807 |
90
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
88
diff
changeset
|
2808 /* Destroy all handlers */ |
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
88
diff
changeset
|
2809 void fd_disp_unregister_all ( void ); |
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
88
diff
changeset
|
2810 |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2811 /* |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2812 * FUNCTION: fd_msg_dispatch |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2813 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2814 * PARAMETERS: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2815 * msg : A msg object that have already been fd_msg_parse_dict. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2816 * session : The session corresponding to this object, if any. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2817 * action : Upon return, the action that must be taken on the message |
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
2818 * error_code : Upon return with action == DISP_ACT_ERROR, contains the error (such as "DIAMETER_UNABLE_TO_COMPLY") |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2819 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2820 * DESCRIPTION: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2821 * Call all handlers registered for a given message. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2822 * The session must have already been resolved on entry. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2823 * The msg pointed may be updated during this process. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2824 * Upon return, the action parameter points to what must be done next. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2825 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2826 * RETURN VALUE: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2827 * 0 : Success. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2828 * EINVAL : A parameter is invalid. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2829 * (other errors) |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2830 */ |
706
4ffbc9f1e922
Large UNTESTED commit with the following changes:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
705
diff
changeset
|
2831 int fd_msg_dispatch ( struct msg ** msg, struct session * session, enum disp_action *action, char ** error_code ); |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2832 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2833 |
0 | 2834 |
2835 /*============================================================*/ | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2836 /* QUEUES */ |
0 | 2837 /*============================================================*/ |
2838 | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2839 /* Management of FIFO queues of elements */ |
0 | 2840 |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2841 /* A queue is an opaque object */ |
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2842 struct fifo; |
0 | 2843 |
2844 /* | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2845 * FUNCTION: fd_fifo_new |
0 | 2846 * |
2847 * PARAMETERS: | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2848 * queue : Upon success, a pointer to the new queue is saved here. |
767
c47c16436f71
Added a limit on fifo queues to avoid memory exaustion when messages are received faster than handled
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
764
diff
changeset
|
2849 * max : max number of items in the queue. Above this number, adding a new item becomes a |
c47c16436f71
Added a limit on fifo queues to avoid memory exaustion when messages are received faster than handled
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
764
diff
changeset
|
2850 * blocking operation. Use 0 to disable this maximum. |
0 | 2851 * |
2852 * DESCRIPTION: | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2853 * Create a new empty queue. |
0 | 2854 * |
2855 * RETURN VALUE : | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2856 * 0 : The queue has been initialized successfully. |
0 | 2857 * EINVAL : The parameter is invalid. |
2858 * ENOMEM : Not enough memory to complete the creation. | |
2859 */ | |
767
c47c16436f71
Added a limit on fifo queues to avoid memory exaustion when messages are received faster than handled
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
764
diff
changeset
|
2860 int fd_fifo_new ( struct fifo ** queue, int max ); |
0 | 2861 |
2862 /* | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2863 * FUNCTION: fd_fifo_del |
0 | 2864 * |
2865 * PARAMETERS: | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2866 * queue : Pointer to an empty queue to delete. |
0 | 2867 * |
2868 * DESCRIPTION: | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2869 * Destroys a queue. This is only possible if no thread is waiting for an element, |
0 | 2870 * and the queue is empty. |
2871 * | |
2872 * RETURN VALUE: | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2873 * 0 : The queue has been destroyed successfully. |
0 | 2874 * EINVAL : The parameter is invalid. |
2875 */ | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2876 int fd_fifo_del ( struct fifo ** queue ); |
0 | 2877 |
2878 /* | |
25
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2879 * FUNCTION: fd_fifo_move |
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2880 * |
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2881 * PARAMETERS: |
653
34373acfbc6a
Added sample C++ file in _sample extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
649
diff
changeset
|
2882 * oldq : Location of a FIFO that is to be emptied. |
34373acfbc6a
Added sample C++ file in _sample extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
649
diff
changeset
|
2883 * newq : A FIFO that will receive the old data. |
25
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2884 * loc_update : if non NULL, a place to store the pointer to new FIFO atomically with the move. |
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2885 * |
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2886 * DESCRIPTION: |
43
2db15632a63d
Added a large part of connection establishment logic, to test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
34
diff
changeset
|
2887 * Empties a queue and move its content to another one atomically. |
25
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2888 * |
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2889 * RETURN VALUE: |
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2890 * 0 : The queue has been destroyed successfully. |
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2891 * EINVAL : A parameter is invalid. |
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2892 */ |
653
34373acfbc6a
Added sample C++ file in _sample extension
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
649
diff
changeset
|
2893 int fd_fifo_move ( struct fifo * oldq, struct fifo * newq, struct fifo ** loc_update ); |
25
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2894 |
67ca08d5bc48
Completed connection context files
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
24
diff
changeset
|
2895 /* |
8
3e143f047f78
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2896 * FUNCTION: fd_fifo_length |
0 | 2897 * |
2898 * PARAMETERS: | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2899 * queue : The queue from which to retrieve the number of elements. |
3e143f047f78
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2900 * length : Upon success, the current number of elements in the queue is stored here. |
0 | 2901 * |
2902 * DESCRIPTION: | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2903 * Retrieve the number of elements in a queue. |
0 | 2904 * |
2905 * RETURN VALUE: | |
2906 * 0 : The length of the queue has been written. | |
2907 * EINVAL : A parameter is invalid. | |
2908 */ | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2909 int fd_fifo_length ( struct fifo * queue, int * length ); |
3e143f047f78
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2910 int fd_fifo_length_noerr ( struct fifo * queue ); /* no error checking version */ |
0 | 2911 |
2912 /* | |
8
3e143f047f78
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2913 * FUNCTION: fd_fifo_setthrhd |
0 | 2914 * |
2915 * PARAMETERS: | |
2916 * queue : The queue for which the thresholds are being set. | |
2917 * data : An opaque pointer that is passed to h_cb and l_cb callbacks. | |
2918 * high : The high-level threshold. If the number of elements in the queue increase to this value, h_cb is called. | |
2919 * h_cb : if not NULL, a callback to call when the queue lengh is bigger than "high". | |
2920 * low : The low-level threshold. Must be < high. | |
2921 * l_cb : If the number of elements decrease to low, this callback is called. | |
2922 * | |
2923 * DESCRIPTION: | |
2924 * This function allows to adjust the number of producer / consumer threads of a queue. | |
8
3e143f047f78
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2925 * If the consumer are slower than the producers, the number of elements in the queue increase. |
0 | 2926 * By setting a "high" value, we allow a callback to be called when this number is too high. |
2927 * The typical use would be to create an additional consumer thread in this callback. | |
2928 * If the queue continues to grow, the callback will be called again when the length is 2 * high, then 3*high, ... N * high | |
8
3e143f047f78
Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2929 * (the callback itself should implement a limit on the number of consumers that can be created) |
0 | 2930 * When the queue starts to decrease, and the number of elements go under ((N - 1) * high + low, the l_cb callback is called |
8
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Backup for the week-end
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
7
diff
changeset
|
2931 * 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 | 2932 * and so on. |
2933 * | |
2934 * Since there is no destructor for the data pointer, if cleanup operations are required, they should be performed in | |
2935 * l_cb when the length of the queue is becoming < low. | |
2936 * | |
8
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2937 * Note that the callbacks are called synchronously, during fd_fifo_post or fd_fifo_get. Their operation should be quick. |
0 | 2938 * |
2939 * RETURN VALUE: | |
2940 * 0 : The thresholds have been set | |
2941 * EINVAL : A parameter is invalid. | |
2942 */ | |
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2943 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 | 2944 |
2945 /* | |
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2946 * FUNCTION: fd_fifo_post |
0 | 2947 * |
2948 * PARAMETERS: | |
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2949 * queue : The queue in which the element must be posted. |
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2950 * item : The element that is put in the queue. |
0 | 2951 * |
2952 * DESCRIPTION: | |
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2953 * An element is added in a queue. Elements are retrieved from the queue in FIFO order |
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2954 * with the fd_fifo_get, fd_fifo_tryget, or fd_fifo_timedget functions. |
0 | 2955 * |
2956 * RETURN VALUE: | |
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2957 * 0 : The element is queued. |
0 | 2958 * EINVAL : A parameter is invalid. |
2959 * ENOMEM : Not enough memory to complete the operation. | |
2960 */ | |
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2961 int fd_fifo_post_int ( struct fifo * queue, void ** item ); |
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2962 #define fd_fifo_post(queue, item) \ |
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2963 fd_fifo_post_int((queue), (void *)(item)) |
0 | 2964 |
2965 /* | |
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2966 * FUNCTION: fd_fifo_get |
0 | 2967 * |
2968 * PARAMETERS: | |
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2969 * queue : The queue from which the first element must be retrieved. |
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2970 * item : On return, the first element of the queue is stored here. |
0 | 2971 * |
2972 * DESCRIPTION: | |
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2973 * This function retrieves the first element from a queue. If the queue is empty, the function will block the |
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2974 * thread until a new element is posted to the queue, or until the thread is canceled (in which case the |
0 | 2975 * function does not return). |
2976 * | |
2977 * RETURN VALUE: | |
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2978 * 0 : A new element has been retrieved. |
0 | 2979 * EINVAL : A parameter is invalid. |
2980 */ | |
620
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2981 int fd_fifo_get_int ( struct fifo * queue, void ** item ); |
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2982 #define fd_fifo_get(queue, item) \ |
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2983 fd_fifo_get_int((queue), (void *)(item)) |
0 | 2984 |
2985 /* | |
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2986 * FUNCTION: fd_fifo_tryget |
0 | 2987 * |
2988 * PARAMETERS: | |
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2989 * queue : The queue from which the element must be retrieved. |
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2990 * item : On return, the first element of the queue is stored here. |
0 | 2991 * |
2992 * DESCRIPTION: | |
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2993 * This function is similar to fd_fifo_get, except that it will not block if |
0 | 2994 * the queue is empty, but return EWOULDBLOCK instead. |
2995 * | |
2996 * RETURN VALUE: | |
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2997 * 0 : A new element has been retrieved. |
0 | 2998 * EINVAL : A parameter is invalid. |
2999 * EWOULDBLOCK : The queue was empty. | |
3000 */ | |
620
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3001 int fd_fifo_tryget_int ( struct fifo * queue, void ** item ); |
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3002 #define fd_fifo_tryget(queue, item) \ |
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3003 fd_fifo_tryget_int((queue), (void *)(item)) |
0 | 3004 |
3005 /* | |
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3006 * FUNCTION: fd_fifo_timedget |
0 | 3007 * |
3008 * PARAMETERS: | |
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3009 * queue : The queue from which the element must be retrieved. |
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3010 * item : On return, the element is stored here. |
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3011 * abstime : the absolute time until which we allow waiting for an item. |
0 | 3012 * |
3013 * DESCRIPTION: | |
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3014 * This function is similar to fd_fifo_get, except that it will block if the queue is empty |
0 | 3015 * only until the absolute time abstime (see pthread_cond_timedwait for + info). |
3016 * If the queue is still empty when the time expires, the function returns ETIMEDOUT | |
3017 * | |
3018 * RETURN VALUE: | |
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3019 * 0 : A new item has been retrieved. |
0 | 3020 * EINVAL : A parameter is invalid. |
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3021 * ETIMEDOUT : The time out has passed and no item has been received. |
0 | 3022 */ |
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3023 int fd_fifo_timedget_int ( struct fifo * queue, void ** item, const struct timespec *abstime ); |
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3024 #define fd_fifo_timedget(queue, item, abstime) \ |
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3025 fd_fifo_timedget_int((queue), (void *)(item), (abstime)) |
0 | 3026 |
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3027 /* Dump a fifo list and optionally its inner elements -- beware of deadlocks! */ |
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3028 void fd_fifo_dump(int level, char * name, struct fifo * queue, void (*dump_item)(int level, void * item)); |
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3029 |
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3030 #endif /* _LIBFDPROTO_H */ |