Mercurial > hg > freeDiameter
annotate include/freeDiameter/libfreeDiameter.h @ 542:0b6cee362f5d
Enforce validation of local certificate upon daemon start.
| author | Sebastien Decugis <sdecugis@nict.go.jp> |
|---|---|
| date | Mon, 13 Sep 2010 18:39:22 +0900 |
| parents | 16224de837fd |
| children | 0758a357a151 |
| rev | line source |
|---|---|
| 0 | 1 /********************************************************************************************************* |
| 2 * Software License Agreement (BSD License) * | |
| 3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> * | |
| 4 * * | |
|
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5 * Copyright (c) 2010, 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 * | |
| 32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * | |
| 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 * THREADS |
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48 * LISTS |
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49 * DICTIONARY |
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50 * SESSIONS |
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51 * MESSAGES |
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52 * DISPATCH |
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53 * QUEUES |
| 0 | 54 */ |
| 55 | |
| 56 #ifndef _LIBFREEDIAMETER_H | |
| 57 #define _LIBFREEDIAMETER_H | |
| 58 | |
| 59 #ifndef FD_IS_CONFIG | |
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60 #error "You must include 'freeDiameter-host.h' before this file." |
| 0 | 61 #endif /* FD_IS_CONFIG */ |
| 62 | |
| 63 #include <pthread.h> | |
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64 #include <sched.h> |
| 0 | 65 #include <string.h> |
| 66 #include <assert.h> | |
| 67 #include <errno.h> | |
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68 #include <netinet/in.h> |
| 0 | 69 #include <arpa/inet.h> |
| 70 #include <sys/socket.h> | |
| 71 #include <netdb.h> | |
| 72 #include <stdio.h> | |
| 73 #include <stdlib.h> | |
| 74 #include <unistd.h> | |
| 75 | |
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76 #ifdef DEBUG |
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77 #include <libgen.h> /* for basename if --dbg_file is specified */ |
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78 #endif /* DEBUG */ |
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79 |
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80 |
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81 /*============================================================*/ |
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82 /* INIT */ |
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83 /*============================================================*/ |
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84 |
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85 /* This function must be called first, before any call to another library function */ |
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86 /* If the parameter is not 0, the support for signals (fd_sig_register) is enabled, otherwise it is disabled */ |
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87 /* The function must be called while the application is single-threaded to enable support for signals */ |
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88 int fd_lib_init(int support_signals); |
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89 |
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90 /* Call this one when the application terminates, to destroy internal threads */ |
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91 void fd_lib_fini(void); |
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92 |
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93 |
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94 |
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95 |
| 0 | 96 /*============================================================*/ |
| 97 /* DEBUG */ | |
| 98 /*============================================================*/ | |
| 99 | |
| 100 /* | |
| 101 * FUNCTION: fd_log_debug | |
| 102 * | |
| 103 * PARAMETERS: | |
| 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 * This function assumes that a global mutex called "fd_log_lock" exists | |
| 113 * in the address space of the current process. | |
| 114 * | |
| 115 * RETURN VALUE: | |
| 116 * None. | |
| 117 */ | |
| 118 void fd_log_debug ( char * format, ... ); | |
| 119 extern pthread_mutex_t fd_log_lock; | |
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120 extern char * fd_debug_one_function; |
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121 extern char * fd_debug_one_file; |
| 0 | 122 |
| 123 /* | |
| 124 * FUNCTION: fd_log_threadname | |
| 125 * | |
| 126 * PARAMETERS: | |
| 127 * name : \0-terminated string containing a name to identify the current thread. | |
| 128 * | |
| 129 * DESCRIPTION: | |
| 130 * Name the current thread, useful for debugging multi-threaded problems. | |
| 131 * | |
| 132 * This function assumes that a global thread-specific key called "fd_log_thname" exists | |
| 133 * in the address space of the current process. | |
| 134 * | |
| 135 * RETURN VALUE: | |
| 136 * None. | |
| 137 */ | |
| 138 void fd_log_threadname ( char * name ); | |
| 139 extern pthread_key_t fd_log_thname; | |
| 140 | |
| 141 /* | |
| 142 * FUNCTION: fd_log_time | |
| 143 * | |
| 144 * PARAMETERS: | |
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145 * ts : The timestamp to log, or NULL for "now" |
| 0 | 146 * buf : An array where the time must be stored |
| 147 * len : size of the buffer | |
| 148 * | |
| 149 * DESCRIPTION: | |
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150 * Writes the timestamp (in human readable format) in a buffer. |
| 0 | 151 * |
| 152 * RETURN VALUE: | |
| 153 * pointer to buf. | |
| 154 */ | |
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155 char * fd_log_time ( struct timespec * ts, char * buf, size_t len ); |
| 0 | 156 |
| 157 | |
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158 /*============================================================*/ |
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159 /* DEBUG MACROS */ |
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160 /*============================================================*/ |
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161 |
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162 #ifndef ASSERT |
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163 #define ASSERT(x) assert(x) |
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164 #endif /* ASSERT */ |
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165 |
| 0 | 166 /* levels definitions */ |
| 167 #define NONE 0 /* Display no debug message */ | |
| 168 #define INFO 1 /* Display errors only */ | |
| 169 #define FULL 2 /* Display additional information to follow code execution */ | |
| 170 #define ANNOYING 4 /* Very verbose, for example in loops */ | |
| 171 #define FCTS 6 /* Display entry parameters of most functions */ | |
| 172 #define CALL 9 /* Display calls to most functions (with CHECK macros) */ | |
| 173 | |
| 174 /* Default level is INFO */ | |
| 175 #ifndef TRACE_LEVEL | |
| 176 #define TRACE_LEVEL INFO | |
| 177 #endif /* TRACE_LEVEL */ | |
| 178 | |
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179 /* The level of the file being compiled. */ |
| 0 | 180 static int local_debug_level = TRACE_LEVEL; |
| 181 | |
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182 /* A global level, changed by configuration or cmd line for example. default is 0. */ |
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183 extern int fd_g_debug_lvl; |
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184 |
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185 /* Some portability code to get nice function name in __PRETTY_FUNCTION__ */ |
| 0 | 186 #if __STDC_VERSION__ < 199901L |
| 187 # if __GNUC__ >= 2 | |
| 188 # define __func__ __FUNCTION__ | |
| 189 # else /* __GNUC__ >= 2 */ | |
| 190 # define __func__ "<unknown>" | |
| 191 # endif /* __GNUC__ >= 2 */ | |
| 192 #endif /* __STDC_VERSION__ < 199901L */ | |
| 193 #ifndef __PRETTY_FUNCTION__ | |
| 194 #define __PRETTY_FUNCTION__ __func__ | |
| 195 #endif /* __PRETTY_FUNCTION__ */ | |
| 196 | |
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197 /* A version of __FILE__ without the full path */ |
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198 static char * file_bname = NULL; |
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199 #define __STRIPPED_FILE__ (file_bname ?: (file_bname = basename(__FILE__))) |
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200 |
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201 |
| 0 | 202 /* Boolean for tracing at a certain level */ |
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203 #ifdef DEBUG |
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204 #define TRACE_BOOL(_level_) ( ((_level_) <= local_debug_level + fd_g_debug_lvl) \ |
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205 || (fd_debug_one_function && !strcmp(fd_debug_one_function, __PRETTY_FUNCTION__)) \ |
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206 || (fd_debug_one_file && !strcmp(fd_debug_one_file, __STRIPPED_FILE__) ) ) |
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207 #else /* DEBUG */ |
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208 #define TRACE_BOOL(_level_) ((_level_) <= local_debug_level + fd_g_debug_lvl) |
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209 #endif /* DEBUG */ |
| 0 | 210 |
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211 |
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212 /************* |
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213 The general debug macro, each call results in two lines of debug messages (change the macro for more compact output) |
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214 *************/ |
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215 #ifdef DEBUG |
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216 /* In DEBUG mode, we add (a lot of) meta-information along each trace. This makes multi-threading problems easier to debug. */ |
| 0 | 217 #define TRACE_DEBUG(level,format,args... ) { \ |
| 218 if ( TRACE_BOOL(level) ) { \ | |
| 219 char __buf[25]; \ | |
| 220 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ | |
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221 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
| 0 | 222 "\t%s|%*s" format "\n", \ |
| 206 | 223 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
| 0 | 224 (level < FULL)?"@":" ",level, "", ## args); \ |
| 225 } \ | |
| 226 } | |
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227 #else /* DEBUG */ |
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228 /* Do not print thread, function, ... only the message itself in this case, unless the debug level is set > FULL. */ |
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229 #define TRACE_DEBUG(level,format,args... ) { \ |
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230 if ( TRACE_BOOL(level) ) { \ |
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231 if (fd_g_debug_lvl > FULL) { \ |
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232 char __buf[25]; \ |
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233 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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234 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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235 "\t%s|%*s" format "\n", \ |
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236 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
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237 (level < FULL)?"@":" ",level, "", ## args); \ |
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238 } else { \ |
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239 fd_log_debug(format "\n", ## args); \ |
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240 } \ |
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241 } \ |
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242 } |
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243 #endif /* DEBUG */ |
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245 /************* |
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246 Derivatives from this macro |
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247 ************/ |
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248 /* Helper for function entry -- for very detailed trace of the execution */ |
| 0 | 249 #define TRACE_ENTRY(_format,_args... ) \ |
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250 TRACE_DEBUG(FCTS, "[enter] %s(" _format ") {" #_args "}", __PRETTY_FUNCTION__, ##_args ); |
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252 /* Helper for debugging by adding traces -- for debuging a specific location of the code */ |
| 0 | 253 #define TRACE_HERE() \ |
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183
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254 TRACE_DEBUG(NONE, " -- debug checkpoint %d -- ", fd_breakhere()); |
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255 int fd_breakhere(void); |
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257 /* Helper for tracing the CHECK_* macros bellow -- very very verbose code execution! */ |
| 0 | 258 #define TRACE_DEBUG_ALL( str ) \ |
| 259 TRACE_DEBUG(CALL, str ); | |
| 260 | |
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261 /* For development only, to keep track of TODO locations in the code */ |
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262 #ifndef ERRORS_ON_TODO |
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263 #define TODO( _msg, _args... ) \ |
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264 TRACE_DEBUG(NONE, "TODO: " _msg , ##_args); |
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265 #else /* ERRORS_ON_TODO */ |
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266 #define TODO( _msg, _args... ) \ |
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267 "TODO" = _msg ## _args; /* just a stupid compilation error to spot the todo */ |
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268 #endif /* ERRORS_ON_TODO */ |
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269 |
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270 /* Trace a binary buffer content */ |
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271 #define TRACE_DEBUG_BUFFER(level, prefix, buf, bufsz, suffix ) { \ |
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272 if ( TRACE_BOOL(level) ) { \ |
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273 char __ts[25]; \ |
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274 int __i; \ |
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275 size_t __sz = (size_t)(bufsz); \ |
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276 uint8_t * __buf = (uint8_t *)(buf); \ |
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277 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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278 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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279 "\t%s|%*s" prefix , \ |
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280 __thn, fd_log_time(NULL, __ts, sizeof(__ts)), __PRETTY_FUNCTION__, __FILE__, __LINE__, \ |
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281 (level < FULL)?"@":" ",level, ""); \ |
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282 for (__i = 0; __i < __sz; __i++) { \ |
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283 fd_log_debug("%02.2hhx", __buf[__i]); \ |
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284 } \ |
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285 fd_log_debug(suffix "\n"); \ |
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286 } \ |
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287 } |
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288 |
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289 /* Some aliases to socket addresses structures */ |
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290 #define sSS struct sockaddr_storage |
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291 #define sSA struct sockaddr |
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292 #define sSA4 struct sockaddr_in |
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293 #define sSA6 struct sockaddr_in6 |
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294 |
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295 /* The sockaddr length of a sSS structure */ |
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296 #define sSAlen( _sa_ ) \ |
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297 ( (socklen_t) ( (((sSA *)_sa_)->sa_family == AF_INET) ? (sizeof(sSA4)) : \ |
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298 ((((sSA *)_sa_)->sa_family == AF_INET6) ? (sizeof(sSA6)) : \ |
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299 0 ) ) ) |
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300 |
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301 /* Dump one sockaddr Node information */ |
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302 #define sSA_DUMP_NODE( sa, flag ) { \ |
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303 sSA * __sa = (sSA *)(sa); \ |
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304 char __addrbuf[INET6_ADDRSTRLEN]; \ |
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305 if (__sa) { \ |
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306 int __rc = getnameinfo(__sa, \ |
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307 sSAlen(__sa), \ |
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308 __addrbuf, \ |
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309 sizeof(__addrbuf), \ |
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310 NULL, \ |
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311 0, \ |
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312 flag); \ |
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313 if (__rc) \ |
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314 fd_log_debug("%s", (char *)gai_strerror(__rc)); \ |
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315 else \ |
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316 fd_log_debug("%s", &__addrbuf[0]); \ |
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317 } else { \ |
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318 fd_log_debug("(NULL / ANY)"); \ |
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319 } \ |
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320 } |
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321 /* Same but with the port (service) also */ |
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322 #define sSA_DUMP_NODE_SERV( sa, flag ) { \ |
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323 sSA * __sa = (sSA *)(sa); \ |
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324 char __addrbuf[INET6_ADDRSTRLEN]; \ |
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325 char __servbuf[32]; \ |
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326 if (__sa) { \ |
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327 int __rc = getnameinfo(__sa, \ |
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328 sSAlen(__sa), \ |
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329 __addrbuf, \ |
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330 sizeof(__addrbuf), \ |
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331 __servbuf, \ |
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332 sizeof(__servbuf), \ |
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333 flag); \ |
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334 if (__rc) \ |
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335 fd_log_debug("%s", (char *)gai_strerror(__rc)); \ |
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336 else \ |
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337 fd_log_debug("[%s]:%s", &__addrbuf[0],&__servbuf[0]); \ |
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338 } else { \ |
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339 fd_log_debug("(NULL / ANY)"); \ |
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340 } \ |
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341 } |
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342 |
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343 /* Inside a debug trace */ |
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344 #define TRACE_DEBUG_sSA(level, prefix, sa, flags, suffix ) { \ |
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345 if ( TRACE_BOOL(level) ) { \ |
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346 char __buf[25]; \ |
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347 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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348 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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349 "\t%s|%*s" prefix , \ |
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350 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
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351 (level < FULL)?"@":" ",level, ""); \ |
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352 sSA_DUMP_NODE_SERV( sa, flags ); \ |
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353 fd_log_debug(suffix "\n"); \ |
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354 } \ |
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355 } |
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356 |
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357 |
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358 /*============================================================*/ |
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359 /* ERROR CHECKING MACRO */ |
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360 /*============================================================*/ |
| 0 | 361 |
| 362 /* Macros to check a return value and branch out in case of error. | |
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363 * These macro should be used only when errors are improbable, not for expected errors. |
| 0 | 364 */ |
| 365 | |
| 366 /* Check the return value of a system function and execute fallback in case of error */ | |
| 367 #define CHECK_SYS_DO( __call__, __fallback__ ) { \ | |
| 368 int __ret__; \ | |
| 369 TRACE_DEBUG_ALL( "Check SYS: " #__call__ ); \ | |
| 370 __ret__ = (__call__); \ | |
| 371 if (__ret__ < 0) { \ | |
| 372 int __err__ = errno; /* We may handle EINTR here */ \ | |
| 373 TRACE_DEBUG(NONE, "ERROR: in '" #__call__ "' :\t%s", strerror(__err__));\ | |
| 374 __fallback__; \ | |
| 375 } \ | |
| 376 } | |
| 377 /* Check the return value of a system function, return error code on error */ | |
| 378 #define CHECK_SYS( __call__ ) { \ | |
| 379 int __ret__; \ | |
| 380 TRACE_DEBUG_ALL( "Check SYS: " #__call__ ); \ | |
| 381 __ret__ = (__call__); \ | |
| 382 if (__ret__ < 0) { \ | |
| 383 int __err__ = errno; /* We may handle EINTR here */ \ | |
| 384 TRACE_DEBUG(NONE, "ERROR: in '" #__call__ "' :\t%s", strerror(__err__));\ | |
| 385 return __err__; \ | |
| 386 } \ | |
| 387 } | |
| 388 | |
| 389 /* Check the return value of a POSIX function and execute fallback in case of error or special value */ | |
| 390 #define CHECK_POSIX_DO2( __call__, __speval__, __fallback1__, __fallback2__ ) { \ | |
| 391 int __ret__; \ | |
| 392 TRACE_DEBUG_ALL( "Check POSIX: " #__call__ ); \ | |
| 393 __ret__ = (__call__); \ | |
| 394 if (__ret__ != 0) { \ | |
| 395 if (__ret__ == (__speval__)) { \ | |
| 396 __fallback1__; \ | |
| 397 } else { \ | |
| 398 TRACE_DEBUG(NONE, "ERROR: in '" #__call__ "':\t%s", strerror(__ret__)); \ | |
| 399 __fallback2__; \ | |
| 400 } \ | |
| 401 } \ | |
| 402 } | |
| 403 | |
| 404 /* Check the return value of a POSIX function and execute fallback in case of error */ | |
| 405 #define CHECK_POSIX_DO( __call__, __fallback__ ) \ | |
| 406 CHECK_POSIX_DO2( (__call__), 0, , __fallback__ ); | |
| 407 | |
| 408 /* Check the return value of a POSIX function and return it if error */ | |
| 409 #define CHECK_POSIX( __call__ ) { \ | |
| 410 int __v__; \ | |
| 411 CHECK_POSIX_DO( __v__ = (__call__), return __v__ ); \ | |
| 412 } | |
| 413 | |
| 414 /* Check that a memory allocator did not return NULL, otherwise log an error and execute fallback */ | |
| 415 #define CHECK_MALLOC_DO( __call__, __fallback__ ) { \ | |
| 416 void * __ret__; \ | |
| 417 TRACE_DEBUG_ALL( "Check MALLOC: " #__call__ ); \ | |
| 418 __ret__ = (void *)( __call__ ); \ | |
| 419 if (__ret__ == NULL) { \ | |
| 420 int __err__ = errno; \ | |
| 421 TRACE_DEBUG(NONE, "ERROR: in '" #__call__ "':\t%s", strerror(__err__)); \ | |
| 422 __fallback__; \ | |
| 423 } \ | |
| 424 } | |
| 425 | |
| 426 /* Check that a memory allocator did not return NULL, otherwise return ENOMEM */ | |
| 427 #define CHECK_MALLOC( __call__ ) \ | |
| 428 CHECK_MALLOC_DO( __call__, return ENOMEM ); | |
| 429 | |
| 430 | |
| 431 /* Check parameters at function entry, execute fallback on error */ | |
| 432 #define CHECK_PARAMS_DO( __bool__, __fallback__ ) \ | |
| 433 TRACE_DEBUG_ALL( "Check PARAMS: " #__bool__ ); \ | |
| 434 if ( ! (__bool__) ) { \ | |
| 435 TRACE_DEBUG(INFO, "Invalid parameter received in '" #__bool__ "'"); \ | |
| 436 __fallback__; \ | |
| 437 } | |
| 438 /* Check parameters at function entry, return EINVAL if the boolean is false (similar to assert) */ | |
| 439 #define CHECK_PARAMS( __bool__ ) \ | |
| 440 CHECK_PARAMS_DO( __bool__, return EINVAL ); | |
| 441 | |
| 442 /* Check the return value of an internal function, log and propagate */ | |
| 443 #define CHECK_FCT_DO( __call__, __fallback__ ) { \ | |
| 444 int __ret__; \ | |
| 445 TRACE_DEBUG_ALL( "Check FCT: " #__call__ ); \ | |
| 446 __ret__ = (__call__); \ | |
| 447 if (__ret__ != 0) { \ | |
| 448 TRACE_DEBUG(INFO, "Error in '" #__call__ "':\t%s", strerror(__ret__)); \ | |
| 449 __fallback__; \ | |
| 450 } \ | |
| 451 } | |
| 452 /* Check the return value of a function call, return any error code */ | |
| 453 #define CHECK_FCT( __call__ ) { \ | |
| 454 int __v__; \ | |
| 455 CHECK_FCT_DO( __v__ = (__call__), return __v__ ); \ | |
| 456 } | |
| 457 | |
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458 |
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459 /*============================================================*/ |
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460 /* OTHER MACROS */ |
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461 /*============================================================*/ |
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462 |
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463 /* helper macros (pre-processor hacks to allow macro arguments) */ |
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464 #define __str( arg ) #arg |
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465 #define _stringize( arg ) __str( arg ) |
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466 #define __agr( arg1, arg2 ) arg1 ## arg2 |
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467 #define _aggregate( arg1, arg2 ) __agr( arg1, arg2 ) |
| 0 | 468 |
| 469 | |
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470 /* A l4 protocol name (TCP / SCTP) */ |
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471 #ifdef DISABLE_SCTP |
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472 #define IPPROTO_NAME( _proto ) \ |
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473 (((_proto) == IPPROTO_TCP) ? "TCP" : \ |
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474 "Unknown") |
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475 #else /* DISABLE_SCTP */ |
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476 #define IPPROTO_NAME( _proto ) \ |
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477 ( ((_proto) == IPPROTO_TCP) ? "TCP" : \ |
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478 (((_proto) == IPPROTO_SCTP) ? "SCTP" : \ |
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479 "Unknown")) |
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480 #endif /* DISABLE_SCTP */ |
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481 |
| 0 | 482 /* Define the value of IP loopback address */ |
| 483 #ifndef INADDR_LOOPBACK | |
| 484 #define INADDR_LOOPBACK inet_addr("127.0.0.1") | |
| 485 #endif /* INADDR_LOOPBACK */ | |
| 486 | |
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487 #ifndef INADDR_BROADCAST |
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488 #define INADDR_BROADCAST ((in_addr_t) 0xffffffff) |
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489 #endif /* INADDR_BROADCAST */ |
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490 |
|
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491 /* An IP equivalent to IN6_IS_ADDR_LOOPBACK */ |
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492 #ifndef IN_IS_ADDR_LOOPBACK |
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493 #define IN_IS_ADDR_LOOPBACK(a) \ |
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494 ((((long int) (a)->s_addr) & ntohl(0xff000000)) == ntohl(0x7f000000)) |
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495 #endif /* IN_IS_ADDR_LOOPBACK */ |
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496 |
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497 /* An IP equivalent to IN6_IS_ADDR_UNSPECIFIED */ |
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498 #ifndef IN_IS_ADDR_UNSPECIFIED |
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499 #define IN_IS_ADDR_UNSPECIFIED(a) \ |
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500 (((long int) (a)->s_addr) == 0x00000000) |
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501 #endif /* IN_IS_ADDR_UNSPECIFIED */ |
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502 |
| 0 | 503 /* create a V4MAPPED address */ |
| 504 #define IN6_ADDR_V4MAP( a6, a4 ) { \ | |
| 505 ((uint32_t *)(a6))[0] = 0; \ | |
| 506 ((uint32_t *)(a6))[1] = 0; \ | |
| 507 ((uint32_t *)(a6))[2] = htonl(0xffff); \ | |
| 508 ((uint32_t *)(a6))[3] = (uint32_t)(a4); \ | |
| 509 } | |
| 510 | |
| 511 /* Retrieve a v4 value from V4MAPPED address ( takes a s6_addr as param) */ | |
| 512 #define IN6_ADDR_V4UNMAP( a6 ) \ | |
| 513 (((in_addr_t *)(a6))[3]) | |
| 514 | |
| 515 | |
| 516 /* We provide macros to convert 64 bit values to and from network byte-order, on systems where it is not already provided. */ | |
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517 #ifndef HAVE_NTOHLL /* Defined by the cmake step, if the ntohll symbol is defined on the system */ |
| 0 | 518 # if HOST_BIG_ENDIAN |
| 519 /* In big-endian systems, we don't have to change the values, since the order is the same as network */ | |
| 520 # define ntohll(x) (x) | |
| 521 # define htonll(x) (x) | |
| 522 # else /* HOST_BIG_ENDIAN */ | |
| 523 /* For these systems, we must reverse the bytes. Use ntohl and htonl on sub-32 blocs, and inverse these blocs. */ | |
| 524 # define ntohll(x) (typeof (x))( (((uint64_t)ntohl( (uint32_t)(x))) << 32 ) | ((uint64_t) ntohl( ((uint64_t)(x)) >> 32 ))) | |
| 525 # define htonll(x) (typeof (x))( (((uint64_t)htonl( (uint32_t)(x))) << 32 ) | ((uint64_t) htonl( ((uint64_t)(x)) >> 32 ))) | |
| 526 # endif /* HOST_BIG_ENDIAN */ | |
| 527 #endif /* HAVE_NTOHLL */ | |
| 528 | |
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529 /* This macro will give the next multiple of 4 for an integer (used for padding sizes of AVP). */ |
| 0 | 530 #define PAD4(_x) ((_x) + ( (4 - (_x)) & 3 ) ) |
| 531 | |
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532 /* Useful to display any value as (safe) ASCII (will garbage UTF-8 output...) */ |
| 0 | 533 #define ASCII(_c) ( ((_c < 32) || (_c > 127)) ? ( _c ? '?' : ' ' ) : _c ) |
| 534 | |
| 535 /* Compare timespec structures */ | |
| 536 #define TS_IS_INFERIOR( ts1, ts2 ) \ | |
| 537 ( ((ts1)->tv_sec < (ts2)->tv_sec ) \ | |
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538 || (((ts1)->tv_sec == (ts2)->tv_sec ) && ((ts1)->tv_nsec < (ts2)->tv_nsec) )) |
| 0 | 539 |
|
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540 /* This gives a good size for buffered reads */ |
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541 #ifndef BUFSIZ |
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542 #define BUFSIZ 96 |
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543 #endif /* BUFSIZ */ |
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544 |
| 0 | 545 |
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546 |
| 0 | 547 /*============================================================*/ |
| 548 /* THREADS */ | |
| 549 /*============================================================*/ | |
| 550 | |
| 551 /* Terminate a thread */ | |
| 552 static __inline__ int fd_thr_term(pthread_t * th) | |
| 553 { | |
| 554 void * th_ret = NULL; | |
| 555 | |
| 556 CHECK_PARAMS(th); | |
| 557 | |
| 558 /* Test if it was already terminated */ | |
| 559 if (*th == (pthread_t)NULL) | |
| 560 return 0; | |
| 561 | |
| 562 /* Cancel the thread if it is still running - ignore error if it was already terminated */ | |
| 563 (void) pthread_cancel(*th); | |
| 564 | |
| 565 /* Then join the thread */ | |
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566 CHECK_POSIX( pthread_join(*th, &th_ret) ); |
| 0 | 567 |
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568 if (th_ret == PTHREAD_CANCELED) { |
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569 TRACE_DEBUG(ANNOYING, "The thread %p was canceled", *th); |
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570 } else { |
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571 TRACE_DEBUG(CALL, "The thread %p returned %x", *th, th_ret); |
| 0 | 572 } |
| 573 | |
| 574 /* Clean the location */ | |
| 575 *th = (pthread_t)NULL; | |
| 576 | |
|
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577 return 0; |
| 0 | 578 } |
| 579 | |
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580 /* Force flushing the cache of a CPU before reading a shared memory area (use only for atomic reads such as int and void*) */ |
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581 extern pthread_mutex_t fd_cpu_mtx_dummy; /* only for the macro bellow, so that we have reasonably fresh pir_state value when needed */ |
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582 #define fd_cpu_flush_cache() { \ |
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583 (void)pthread_mutex_lock(&fd_cpu_mtx_dummy); \ |
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584 (void)pthread_mutex_unlock(&fd_cpu_mtx_dummy); \ |
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585 } |
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586 |
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587 |
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588 /************* |
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589 Cancelation cleanup handlers for common objects |
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590 *************/ |
| 0 | 591 static __inline__ void fd_cleanup_mutex( void * mutex ) |
| 592 { | |
| 593 CHECK_POSIX_DO( pthread_mutex_unlock((pthread_mutex_t *)mutex), /* */); | |
| 594 } | |
| 595 | |
| 596 static __inline__ void fd_cleanup_rwlock( void * rwlock ) | |
| 597 { | |
| 598 CHECK_POSIX_DO( pthread_rwlock_unlock((pthread_rwlock_t *)rwlock), /* */); | |
| 599 } | |
| 600 | |
| 601 static __inline__ void fd_cleanup_buffer( void * buffer ) | |
| 602 { | |
| 603 free(buffer); | |
| 604 } | |
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605 static __inline__ void fd_cleanup_socket(void * sockptr) |
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606 { |
|
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607 if (sockptr && (*(int *)sockptr > 0)) { |
| 179 | 608 CHECK_SYS_DO( close(*(int *)sockptr), /* ignore */ ); |
| 184 | 609 *(int *)sockptr = -1; |
|
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610 } |
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611 } |
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612 |
| 0 | 613 |
| 614 /*============================================================*/ | |
|
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615 /* SIGNALS */ |
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616 /*============================================================*/ |
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617 |
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618 /* Register a new callback to be called on reception of a given signal (it receives the signal as parameter) */ |
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619 /* EALREADY will be returned if there is already a callback registered on this signal */ |
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620 /* NOTE: the signal handler will be called from a new detached thread */ |
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621 int fd_sig_register(int signal, char * modname, void (*callback)(int signal)); |
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622 |
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623 /* Remove the handler for a given signal */ |
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624 int fd_sig_unregister(int signal); |
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625 |
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626 /* Dump list of handlers */ |
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627 void fd_sig_dump(int level, int indent); |
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628 |
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629 /* Name of signals */ |
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630 const char * fd_sig_abbrev(int signal); |
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631 |
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632 |
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633 /*============================================================*/ |
| 0 | 634 /* LISTS */ |
| 635 /*============================================================*/ | |
| 636 | |
| 637 /* The following structure represents a chained list element */ | |
| 638 struct fd_list { | |
| 639 struct fd_list *next; /* next element in the list */ | |
| 640 struct fd_list *prev; /* previous element in the list */ | |
| 641 struct fd_list *head; /* head of the list */ | |
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642 void *o; /* additional pointer, used for any purpose (ex: start of the parent object) */ |
| 0 | 643 }; |
| 644 | |
| 645 /* Initialize a list element */ | |
|
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646 #define FD_LIST_INITIALIZER( _list_name ) \ |
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647 { .next = & _list_name, .prev = & _list_name, .head = & _list_name, .o = NULL } |
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648 #define FD_LIST_INITIALIZER_O( _list_name, _obj ) \ |
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649 { .next = & _list_name, .prev = & _list_name, .head = & _list_name, .o = _obj } |
| 0 | 650 void fd_list_init ( struct fd_list * list, void *obj ); |
| 651 | |
| 652 /* Return boolean, true if the list is empty */ | |
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653 #define FD_IS_LIST_EMPTY( _list ) ((((struct fd_list *)(_list))->head == (_list)) && (((struct fd_list *)(_list))->next == (_list))) |
| 0 | 654 |
| 655 /* Insert an item in a list at known position */ | |
| 656 void fd_list_insert_after ( struct fd_list * ref, struct fd_list * item ); | |
| 657 void fd_list_insert_before ( struct fd_list * ref, struct fd_list * item ); | |
| 658 | |
|
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659 /* Move all elements from a list at the end of another */ |
|
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660 void fd_list_move_end(struct fd_list * ref, struct fd_list * senti); |
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661 |
|
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662 /* 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 | 663 int fd_list_insert_ordered( struct fd_list * head, struct fd_list * item, int (*cmp_fct)(void *, void *), void ** ref_duplicate); |
| 664 | |
| 665 /* Unlink an item from a list */ | |
| 666 void fd_list_unlink ( struct fd_list * item ); | |
| 667 | |
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668 |
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669 |
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670 /*============================================================*/ |
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671 /* HASH */ |
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672 /*============================================================*/ |
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673 |
| 0 | 674 /* Compute a hash value of a string (session id, diameter id, ...) */ |
| 675 uint32_t fd_hash ( char * string, size_t len ); | |
| 676 | |
| 677 | |
| 678 | |
| 679 /*============================================================*/ | |
| 680 /* DICTIONARY */ | |
| 681 /*============================================================*/ | |
| 682 /* Structure that contains the complete dictionary definitions */ | |
| 683 struct dictionary; | |
| 684 | |
| 685 /* Structure that contains a dictionary object */ | |
| 686 struct dict_object; | |
| 687 | |
| 688 /* Types of object in the dictionary. */ | |
| 689 enum dict_object_type { | |
| 690 DICT_VENDOR = 1, /* Vendor */ | |
| 691 DICT_APPLICATION, /* Diameter Application */ | |
| 692 DICT_TYPE, /* AVP data type */ | |
| 693 DICT_ENUMVAL, /* Named constant (value of an enumerated AVP type) */ | |
| 694 DICT_AVP, /* AVP */ | |
| 695 DICT_COMMAND, /* Diameter Command */ | |
| 696 DICT_RULE /* a Rule for AVP in command or grouped AVP */ | |
| 697 #define DICT_TYPE_MAX DICT_RULE | |
| 698 }; | |
| 699 | |
| 700 /* Initialize a dictionary */ | |
| 701 int fd_dict_init(struct dictionary ** dict); | |
| 702 /* Destroy a dictionary */ | |
| 703 int fd_dict_fini(struct dictionary ** dict); | |
| 704 | |
| 705 /* | |
| 706 * FUNCTION: fd_dict_new | |
| 707 * | |
| 708 * PARAMETERS: | |
| 709 * dict : Pointer to the dictionnary where the object is created | |
| 710 * type : What kind of object must be created | |
| 711 * data : pointer to the data for the object. | |
| 712 * type parameter is used to determine the type of data (see bellow for detail). | |
| 713 * parent : a reference to a parent object, if needed. | |
| 714 * ref : upon successful creation, reference to new object is stored here if !null. | |
| 715 * | |
| 716 * DESCRIPTION: | |
| 717 * Create a new object in the dictionary. | |
| 718 * See following object sections in this header file for more information on data and parent parameters format. | |
| 719 * | |
| 720 * RETURN VALUE: | |
| 721 * 0 : The object is created in the dictionary. | |
| 722 * EINVAL : A parameter is invalid. | |
| 723 * EEXIST : This object is already defined in the dictionary (with conflicting data). | |
| 724 * If "ref" is not NULL, it points to the existing element on return. | |
| 725 * (other standard errors may be returned, too, with their standard meaning. Example: | |
| 726 * ENOMEM : Memory allocation for the new object element failed.) | |
| 727 */ | |
| 728 int fd_dict_new ( struct dictionary * dict, enum dict_object_type type, void * data, struct dict_object * parent, struct dict_object **ref ); | |
| 729 | |
| 730 /* | |
| 731 * FUNCTION: fd_dict_search | |
| 732 * | |
| 733 * PARAMETERS: | |
| 734 * dict : Pointer to the dictionnary where the object is searched | |
| 735 * type : type of object that is being searched | |
| 736 * criteria : how the object must be searched. See object-related sections bellow for more information. | |
| 737 * what : depending on criteria, the data that must be searched. | |
| 738 * result : On successful return, pointer to the object is stored here. | |
| 739 * retval : this value is returned if the object is not found and result is not NULL. | |
| 740 * | |
| 741 * DESCRIPTION: | |
| 742 * Perform a search in the dictionary. | |
| 743 * See the object-specific sections bellow to find how to look for each objects. | |
| 744 * If the "result" parameter is NULL, the function is used to check if an object is in the dictionary. | |
| 745 * Otherwise, a reference to the object is stored in result if found. | |
| 746 * If result is not NULL and the object is not found, retval is returned (should be 0 or ENOENT usually) | |
| 747 * | |
| 748 * RETURN VALUE: | |
| 749 * 0 : The object has been found in the dictionary, or *result is NULL. | |
| 750 * EINVAL : A parameter is invalid. | |
| 751 * ENOENT : No matching object has been found, and result was NULL. | |
| 752 */ | |
| 753 int fd_dict_search ( struct dictionary * dict, enum dict_object_type type, int criteria, void * what, struct dict_object **result, int retval ); | |
| 754 | |
| 755 /* Special case: get the generic error command object */ | |
| 756 int fd_dict_get_error_cmd(struct dictionary * dict, struct dict_object **obj); | |
| 757 | |
| 758 /* | |
| 759 * FUNCTION: fd_dict_getval | |
| 760 * | |
| 761 * PARAMETERS: | |
| 762 * object : Pointer to a dictionary object. | |
| 763 * data : pointer to a structure to hold the data for the object. | |
| 764 * The type is the same as "data" parameter in fd_dict_new function. | |
| 765 * | |
| 766 * DESCRIPTION: | |
| 767 * Retrieve content of a dictionary object. | |
| 768 * See following object sections in this header file for more information on data and parent parameters format. | |
| 769 * | |
| 770 * RETURN VALUE: | |
| 771 * 0 : The content of the object has been retrieved. | |
| 772 * EINVAL : A parameter is invalid. | |
| 773 */ | |
| 774 int fd_dict_getval ( struct dict_object * object, void * val); | |
| 775 int fd_dict_gettype ( struct dict_object * object, enum dict_object_type * type); | |
| 776 int fd_dict_getdict ( struct dict_object * object, struct dictionary ** dict); | |
| 777 | |
| 778 /* Debug functions */ | |
| 779 void fd_dict_dump_object(struct dict_object * obj); | |
| 780 void fd_dict_dump(struct dictionary * dict); | |
| 781 | |
| 782 /* | |
| 783 *************************************************************************** | |
| 784 * | |
| 785 * Vendor object | |
| 786 * | |
| 787 * These types are used to manage vendors in the dictionary | |
| 788 * | |
| 789 *************************************************************************** | |
| 790 */ | |
| 791 | |
| 792 /* Type to hold a Vendor ID: "SMI Network Management Private Enterprise Codes" (RFC3232) */ | |
| 793 typedef uint32_t vendor_id_t; | |
| 794 | |
| 795 /* Type to hold data associated to a vendor */ | |
| 796 struct dict_vendor_data { | |
| 797 vendor_id_t vendor_id; /* ID of a vendor */ | |
| 798 char *vendor_name; /* The name of this vendor */ | |
| 799 }; | |
| 800 | |
| 801 /* The criteria for searching a vendor object in the dictionary */ | |
| 802 enum { | |
| 803 VENDOR_BY_ID = 10, /* "what" points to a vendor_id_t */ | |
| 804 VENDOR_BY_NAME, /* "what" points to a string */ | |
| 805 VENDOR_OF_APPLICATION /* "what" points to a struct dict_object containing an application (see bellow) */ | |
| 806 }; | |
| 807 | |
| 808 /*** | |
| 809 * API usage : | |
| 810 | |
| 811 Note: the value of "vendor_name" is copied when the object is created, and the string may be disposed afterwards. | |
| 812 On the other side, when value is retrieved with dict_getval, the string is not copied and MUST NOT be freed. It will | |
| 813 be freed automatically along with the object itself with call to dict_fini later. | |
| 814 | |
|
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815 - fd_dict_new: |
| 0 | 816 The "parent" parameter is not used for vendors. |
| 817 Sample code to create a vendor: | |
| 818 { | |
| 819 int ret; | |
| 820 struct dict_object * myvendor; | |
| 821 struct dict_vendor_data myvendordata = { 23455, "my vendor name" }; -- just an example... | |
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822 ret = fd_dict_new ( dict, DICT_VENDOR, &myvendordata, NULL, &myvendor ); |
| 0 | 823 } |
| 824 | |
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825 - fd_dict_search: |
| 0 | 826 Sample codes to look for a vendor object, by its id or name: |
| 827 { | |
| 828 int ret; | |
| 829 struct dict_object * vendor_found; | |
| 830 vendor_id_t vendorid = 23455; | |
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831 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_ID, &vendorid, &vendor_found, ENOENT); |
| 0 | 832 - or - |
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833 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_NAME, "my vendor name", &vendor_found, ENOENT); |
| 0 | 834 } |
| 835 | |
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836 - fd_dict_getval: |
| 0 | 837 Sample code to retrieve the data from a vendor object: |
| 838 { | |
| 839 int ret; | |
| 840 struct dict_object * myvendor; | |
| 841 struct dict_vendor_data myvendordata; | |
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842 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_NAME, "my vendor name", &myvendor, ENOENT); |
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843 ret = fd_dict_getval ( myvendor, &myvendordata ); |
| 0 | 844 printf("my vendor id: %d\n", myvendordata.vendor_id ); |
| 845 } | |
| 846 | |
| 847 */ | |
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848 |
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849 /* Special function: */ |
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850 uint32_t * fd_dict_get_vendorid_list(struct dictionary * dict); |
| 0 | 851 |
| 852 /* | |
| 853 *************************************************************************** | |
| 854 * | |
| 855 * Application object | |
| 856 * | |
| 857 * These types are used to manage Diameter applications in the dictionary | |
| 858 * | |
| 859 *************************************************************************** | |
| 860 */ | |
| 861 | |
| 862 /* Type to hold a Diameter application ID: IANA assigned value for this application. */ | |
| 863 typedef uint32_t application_id_t; | |
| 864 | |
| 865 /* Type to hold data associated to an application */ | |
| 866 struct dict_application_data { | |
| 867 application_id_t application_id; /* ID of the application */ | |
| 868 char *application_name; /* The name of this application */ | |
| 869 }; | |
| 870 | |
| 871 /* The criteria for searching an application object in the dictionary */ | |
| 872 enum { | |
| 873 APPLICATION_BY_ID = 20, /* "what" points to a application_id_t */ | |
| 874 APPLICATION_BY_NAME, /* "what" points to a string */ | |
| 875 APPLICATION_OF_TYPE, /* "what" points to a struct dict_object containing a type object (see bellow) */ | |
| 876 APPLICATION_OF_COMMAND /* "what" points to a struct dict_object containing a command (see bellow) */ | |
| 877 }; | |
| 878 | |
| 879 /*** | |
| 880 * API usage : | |
| 881 | |
| 882 The "parent" parameter of dict_new may point to a vendor object to inform of what vendor defines the application. | |
| 883 for standard-track applications, the "parent" parameter should be NULL. | |
| 884 The vendor associated to an application is retrieved with VENDOR_OF_APPLICATION search criteria on vendors. | |
| 885 | |
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886 - fd_dict_new: |
| 0 | 887 Sample code for application creation: |
| 888 { | |
| 889 int ret; | |
| 890 struct dict_object * vendor; | |
| 891 struct dict_object * appl; | |
| 892 struct dict_vendor_data vendor_data = { | |
| 893 23455, | |
| 894 "my vendor name" | |
| 895 }; | |
| 896 struct dict_application_data app_data = { | |
| 897 9789, | |
| 898 "my vendor's application" | |
| 899 }; | |
| 900 | |
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901 ret = fd_dict_new ( dict, DICT_VENDOR, &vendor_data, NULL, &vendor ); |
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902 ret = fd_dict_new ( dict, DICT_APPLICATION, &app_data, vendor, &appl ); |
| 0 | 903 } |
| 904 | |
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905 - fd_dict_search: |
| 0 | 906 Sample code to retrieve the vendor of an application |
| 907 { | |
| 908 int ret; | |
| 909 struct dict_object * vendor, * appli; | |
| 910 | |
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911 ret = fd_dict_search ( dict, DICT_APPLICATION, APPLICATION_BY_NAME, "my vendor's application", &appli, ENOENT); |
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912 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_OF_APPLICATION, appli, &vendor, ENOENT); |
| 0 | 913 } |
| 914 | |
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915 - fd_dict_getval: |
| 0 | 916 Sample code to retrieve the data from an application object: |
| 917 { | |
| 918 int ret; | |
| 919 struct dict_object * appli; | |
| 920 struct dict_application_data appl_data; | |
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921 ret = fd_dict_search ( dict, DICT_APPLICATION, APPLICATION_BY_NAME, "my vendor's application", &appli, ENOENT); |
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922 ret = fd_dict_getval ( appli, &appl_data ); |
| 0 | 923 printf("my application id: %s\n", appl_data.application_id ); |
| 924 } | |
| 925 | |
| 926 */ | |
| 927 | |
| 928 /* | |
| 929 *************************************************************************** | |
| 930 * | |
| 931 * Type object | |
| 932 * | |
| 933 * These types are used to manage AVP data types in the dictionary | |
| 934 * | |
| 935 *************************************************************************** | |
| 936 */ | |
| 937 | |
| 938 /* Type to store any AVP value */ | |
| 939 union avp_value { | |
| 940 struct { | |
| 941 uint8_t *data; /* bytes buffer */ | |
| 942 size_t len; /* length of the data buffer */ | |
| 943 } os; /* Storage for an octet string, data is alloc'd and must be freed */ | |
| 944 int32_t i32; /* integer 32 */ | |
| 945 int64_t i64; /* integer 64 */ | |
| 946 uint32_t u32; /* unsigned 32 */ | |
| 947 uint64_t u64; /* unsigned 64 */ | |
| 948 float f32; /* float 32 */ | |
| 949 double f64; /* float 64 */ | |
| 950 }; | |
| 951 | |
| 952 /* These are the basic AVP types defined in RFC3588bis */ | |
| 953 enum dict_avp_basetype { | |
| 954 AVP_TYPE_GROUPED, | |
| 955 AVP_TYPE_OCTETSTRING, | |
| 956 AVP_TYPE_INTEGER32, | |
| 957 AVP_TYPE_INTEGER64, | |
| 958 AVP_TYPE_UNSIGNED32, | |
| 959 AVP_TYPE_UNSIGNED64, | |
| 960 AVP_TYPE_FLOAT32, | |
| 961 AVP_TYPE_FLOAT64 | |
| 962 #define AVP_TYPE_MAX AVP_TYPE_FLOAT64 | |
| 963 }; | |
| 964 | |
| 965 /* Callbacks that can be associated with a derived type to easily interpret the AVP value. */ | |
| 966 /* | |
| 967 * CALLBACK: dict_avpdata_interpret | |
| 968 * | |
| 969 * PARAMETERS: | |
| 970 * val : Pointer to the AVP value that must be interpreted. | |
| 971 * interpreted : The result of interpretation is stored here. The format and meaning depends on each type. | |
| 972 * | |
| 973 * DESCRIPTION: | |
| 974 * This callback can be provided with a derived type in order to facilitate the interpretation of formated data. | |
| 975 * For example, when an AVP of type "Address" is received, it can be used to convert the octetstring into a struct sockaddr. | |
| 976 * This callback is not called directly, but through the message's API msg_avp_value_interpret function. | |
| 977 * | |
| 978 * RETURN VALUE: | |
| 979 * 0 : Operation complete. | |
| 980 * !0 : An error occurred, the error code is returned. | |
| 981 */ | |
| 982 typedef int (*dict_avpdata_interpret) (union avp_value * value, void * interpreted); | |
| 983 /* | |
| 984 * CALLBACK: dict_avpdata_encode | |
| 985 * | |
| 986 * PARAMETERS: | |
| 987 * data : The formated data that must be stored in the AVP value. | |
| 988 * val : Pointer to the AVP value storage area where the data must be stored. | |
| 989 * | |
| 990 * DESCRIPTION: | |
| 991 * This callback can be provided with a derived type in order to facilitate the encoding of formated data. | |
| 992 * For example, it can be used to convert a struct sockaddr in an AVP value of type Address. | |
| 993 * This callback is not called directly, but through the message's API msg_avp_value_encode function. | |
| 994 * If the callback is defined for an OctetString based type, the created string must be malloc'd. free will be called | |
| 995 * automatically later. | |
| 996 * | |
| 997 * RETURN VALUE: | |
| 998 * 0 : Operation complete. | |
| 999 * !0 : An error occurred, the error code is returned. | |
| 1000 */ | |
| 1001 typedef int (*dict_avpdata_encode) (void * data, union avp_value * val); | |
| 1002 | |
| 1003 | |
| 1004 /* Type to hold data associated to a derived AVP data type */ | |
| 1005 struct dict_type_data { | |
| 1006 enum dict_avp_basetype type_base; /* How the data of such AVP must be interpreted */ | |
| 1007 char *type_name; /* The name of this type */ | |
| 1008 dict_avpdata_interpret type_interpret;/* cb to convert the AVP value in more comprehensive format (or NULL) */ | |
| 1009 dict_avpdata_encode type_encode; /* cb to convert formatted data into an AVP value (or NULL) */ | |
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1010 void (*type_dump)(union avp_value * val); /* cb called by fd_msg_dump_one for this type of data (if != NULL), to dump the AVP value in debug */ |
| 0 | 1011 }; |
| 1012 | |
| 1013 /* The criteria for searching a type object in the dictionary */ | |
| 1014 enum { | |
| 1015 TYPE_BY_NAME = 30, /* "what" points to a string */ | |
| 1016 TYPE_OF_ENUMVAL, /* "what" points to a struct dict_object containing an enumerated constant (DICT_ENUMVAL, see bellow). */ | |
| 1017 TYPE_OF_AVP /* "what" points to a struct dict_object containing an AVP object. */ | |
| 1018 }; | |
| 1019 | |
| 1020 | |
| 1021 /*** | |
| 1022 * API usage : | |
| 1023 | |
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1024 - fd_dict_new: |
| 0 | 1025 The "parent" parameter may point to an application object, when a type is defined by a Diameter application. |
| 1026 | |
| 1027 Sample code: | |
| 1028 { | |
| 1029 int ret; | |
| 1030 struct dict_object * mytype; | |
| 1031 struct dict_type_data mytypedata = | |
| 1032 { | |
| 1033 AVP_TYPE_OCTETSTRING, | |
| 1034 "Address", | |
| 1035 NULL, | |
| 1036 NULL | |
| 1037 }; | |
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1038 ret = fd_dict_new ( dict, DICT_TYPE, &mytypedata, NULL, &mytype ); |
| 0 | 1039 } |
| 1040 | |
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1041 - fd_dict_search: |
| 0 | 1042 Sample code: |
| 1043 { | |
| 1044 int ret; | |
| 1045 struct dict_object * address_type; | |
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1046 ret = fd_dict_search ( dict, DICT_TYPE, TYPE_BY_NAME, "Address", &address_type, ENOENT); |
| 0 | 1047 } |
| 1048 | |
| 1049 */ | |
| 1050 | |
| 1051 /* | |
| 1052 *************************************************************************** | |
| 1053 * | |
| 1054 * Enumerated values object | |
| 1055 * | |
| 1056 * These types are used to manage named constants of some AVP, | |
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1057 * for enumerated types. freeDiameter allows constants for types others than Unsigned32 |
| 0 | 1058 * |
| 1059 *************************************************************************** | |
| 1060 */ | |
| 1061 | |
| 1062 /* Type to hold data of named constants for AVP */ | |
| 1063 struct dict_enumval_data { | |
| 1064 char *enum_name; /* The name of this constant */ | |
| 1065 union avp_value enum_value; /* Value of the constant. Union term depends on parent type's base type. */ | |
| 1066 }; | |
| 1067 | |
| 1068 /* The criteria for searching a constant in the dictionary */ | |
| 1069 enum { | |
| 1070 ENUMVAL_BY_STRUCT = 40, /* "what" points to a struct dict_enumval_request as defined bellow */ | |
| 1071 }; | |
| 1072 | |
| 1073 struct dict_enumval_request { | |
| 1074 /* Identifier of the parent type, one of the following must not be NULL */ | |
| 1075 struct dict_object *type_obj; | |
| 1076 char *type_name; | |
| 1077 | |
| 1078 /* Search criteria for the constant */ | |
| 1079 struct dict_enumval_data search; /* search.enum_value is used only if search.enum_name == NULL */ | |
| 1080 }; | |
| 1081 | |
| 1082 /*** | |
| 1083 * API usage : | |
| 1084 | |
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1085 - fd_dict_new: |
| 0 | 1086 The "parent" parameter must point to a derived type object. |
| 1087 Sample code to create a type "Boolean" with two constants "True" and "False": | |
| 1088 { | |
| 1089 int ret; | |
| 1090 struct dict_object * type_boolean; | |
| 1091 struct dict_type_data type_boolean_data = | |
| 1092 { | |
| 1093 AVP_TYPE_INTEGER32, | |
| 1094 "Boolean", | |
| 1095 NULL, | |
| 1096 NULL | |
| 1097 }; | |
| 1098 struct dict_enumval_data boolean_false = | |
| 1099 { | |
| 1100 .enum_name="False", | |
| 1101 .enum_value.i32 = 0 | |
| 1102 }; | |
| 1103 struct dict_enumval_data boolean_true = | |
| 1104 { | |
| 1105 .enum_name="True", | |
| 1106 .enum_value.i32 = -1 | |
| 1107 }; | |
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1108 ret = fd_dict_new ( dict, DICT_TYPE, &type_boolean_data, NULL, &type_boolean ); |
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1109 ret = fd_dict_new ( dict, DICT_ENUMVAL, &boolean_false, type_boolean, NULL ); |
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1110 ret = fd_dict_new ( dict, DICT_ENUMVAL, &boolean_true , type_boolean, NULL ); |
| 0 | 1111 |
| 1112 } | |
| 1113 | |
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1114 - fd_dict_search: |
| 0 | 1115 Sample code to look for a constant name, by its value: |
| 1116 { | |
| 1117 int ret; | |
| 1118 struct dict_object * value_found; | |
| 1119 struct dict_enumval_request boolean_by_value = | |
| 1120 { | |
| 1121 .type_name = "Boolean", | |
| 1122 .search.enum_name=NULL, | |
| 1123 .search.enum_value.i32 = -1 | |
| 1124 }; | |
| 1125 | |
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1126 ret = fd_dict_search ( dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &boolean_by_value, &value_found, ENOENT); |
| 0 | 1127 } |
| 1128 | |
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1129 - fd_dict_getval: |
| 0 | 1130 Sample code to retrieve the data from a constant object: |
| 1131 { | |
| 1132 int ret; | |
| 1133 struct dict_object * value_found; | |
| 1134 struct dict_enumval_data boolean_data = NULL; | |
| 1135 struct dict_enumval_request boolean_by_value = | |
| 1136 { | |
| 1137 .type_name = "Boolean", | |
| 1138 .search.enum_name=NULL, | |
| 1139 .search.enum_value.i32 = 0 | |
| 1140 }; | |
| 1141 | |
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1142 ret = fd_dict_search ( dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &boolean_by_value, &value_found, ENOENT); |
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1143 ret = fd_dict_getval ( value_found, &boolean_data ); |
| 0 | 1144 printf(" Boolean with value 0: %s", boolean_data.enum_name ); |
| 1145 } | |
| 1146 */ | |
| 1147 | |
| 1148 /* | |
| 1149 *************************************************************************** | |
| 1150 * | |
| 1151 * AVP object | |
| 1152 * | |
| 1153 * These objects are used to manage AVP definitions in the dictionary | |
| 1154 * | |
| 1155 *************************************************************************** | |
| 1156 */ | |
| 1157 | |
| 1158 /* Type to hold an AVP code. For vendor 0, these codes are assigned by IANA. Otherwise, it is managed by the vendor */ | |
| 1159 typedef uint32_t avp_code_t; | |
| 1160 | |
| 1161 /* Values of AVP flags */ | |
| 1162 #define AVP_FLAG_VENDOR 0x80 | |
| 1163 #define AVP_FLAG_MANDATORY 0x40 | |
| 1164 #define AVP_FLAG_RESERVED3 0x20 | |
| 1165 #define AVP_FLAG_RESERVED4 0x10 | |
| 1166 #define AVP_FLAG_RESERVED5 0x08 | |
| 1167 #define AVP_FLAG_RESERVED6 0x04 | |
| 1168 #define AVP_FLAG_RESERVED7 0x02 | |
| 1169 #define AVP_FLAG_RESERVED8 0x01 | |
| 1170 | |
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1171 /* For dumping flags and values */ |
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1172 #define DUMP_AVPFL_str "%c%c" |
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1173 #define DUMP_AVPFL_val(_val) (_val & AVP_FLAG_VENDOR)?'V':'-' , (_val & AVP_FLAG_MANDATORY)?'M':'-' |
| 0 | 1174 |
| 1175 /* Type to hold data associated to an avp */ | |
| 1176 struct dict_avp_data { | |
| 1177 avp_code_t avp_code; /* Code of the avp */ | |
| 1178 vendor_id_t avp_vendor; /* Vendor of the AVP, or 0 */ | |
| 1179 char *avp_name; /* Name of this AVP */ | |
| 1180 uint8_t avp_flag_mask; /* Mask of fixed AVP flags */ | |
| 1181 uint8_t avp_flag_val; /* Values of the fixed flags */ | |
| 1182 enum dict_avp_basetype avp_basetype; /* Basic type of data found in the AVP */ | |
| 1183 }; | |
| 1184 | |
| 1185 /* The criteria for searching an avp object in the dictionary */ | |
| 1186 enum { | |
| 1187 AVP_BY_CODE = 50, /* "what" points to an avp_code_t, vendor is always 0 */ | |
| 1188 AVP_BY_NAME, /* "what" points to a string, vendor is always 0 */ | |
| 1189 AVP_BY_CODE_AND_VENDOR, /* "what" points to a struct dict_avp_request (see bellow), where avp_vendor and avp_code are set */ | |
| 1190 AVP_BY_NAME_AND_VENDOR /* "what" points to a struct dict_avp_request (see bellow), where avp_vendor and avp_name are set */ | |
| 1191 }; | |
| 1192 | |
| 1193 /* Struct used for some researchs */ | |
| 1194 struct dict_avp_request { | |
| 1195 vendor_id_t avp_vendor; | |
| 1196 avp_code_t avp_code; | |
| 1197 char *avp_name; | |
| 1198 }; | |
| 1199 | |
| 1200 | |
| 1201 /*** | |
| 1202 * API usage : | |
| 1203 | |
| 1204 If "parent" parameter is not NULL during AVP creation, it must point to a DICT_TYPE object. | |
| 1205 The extended type is then attached to the AVP. In case where it is an enumerated type, the value of | |
| 1206 AVP is automatically interpreted in debug messages, and in message checks. | |
| 1207 The derived type of an AVP can be retrieved with: dict_search ( DICT_TYPE, TYPE_OF_AVP, avp, ... ) | |
| 1208 | |
| 1209 To create the rules (ABNF) for children of Grouped AVP, see the DICT_RULE related part. | |
| 1210 | |
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1211 - fd_dict_new: |
| 0 | 1212 Sample code for AVP creation: |
| 1213 { | |
| 1214 int ret; | |
| 1215 struct dict_object * user_name_avp; | |
| 1216 struct dict_object * boolean_type; | |
| 1217 struct dict_object * sample_boolean_avp; | |
| 1218 struct dict_avp_data user_name_data = { | |
| 1219 1, // code | |
| 1220 0, // vendor | |
| 1221 "User-Name", // name | |
| 1222 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 | |
| 1223 AVP_FLAG_MANDATORY, // the V flag must be cleared, the M flag must be set. | |
| 1224 AVP_TYPE_OCTETSTRING // User-Name AVP contains OctetString data (further precision such as UTF8String can be given with a parent derived type) | |
| 1225 }; | |
| 1226 struct dict_avp_data sample_boolean_data = { | |
| 1227 31337, | |
| 1228 23455, | |
| 1229 "Sample-Boolean", | |
| 1230 AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, | |
| 1231 AVP_FLAG_VENDOR, | |
| 1232 AVP_TYPE_INTEGER32 // This MUST be the same as parent type's | |
| 1233 }; | |
| 1234 | |
| 1235 -- Create an AVP with a base type -- | |
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1236 ret = fd_dict_new ( dict, DICT_AVP, &user_name_data, NULL, &user_name_avp ); |
| 0 | 1237 |
| 1238 -- Create an AVP with a derived type -- | |
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1239 ret = fd_dict_search ( dict, DICT_TYPE, TYPE_BY_NAME, "Boolean", &boolean_type, ENOENT); |
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1240 ret = fd_dict_new ( dict, DICT_AVP, &sample_boolean_data , boolean_type, &sample_boolean_avp ); |
| 0 | 1241 |
| 1242 } | |
| 1243 | |
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1244 - fd_dict_search: |
| 0 | 1245 Sample code to look for an AVP |
| 1246 { | |
| 1247 int ret; | |
| 1248 struct dict_object * avp_username; | |
| 1249 struct dict_object * avp_sampleboolean; | |
| 1250 struct dict_avp_request avpvendorboolean = | |
| 1251 { | |
| 1252 .avp_vendor = 23455, | |
| 1253 .avp_name = "Sample-Boolean" | |
| 1254 }; | |
| 1255 | |
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1256 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME, "User-Name", &avp_username, ENOENT); |
| 0 | 1257 |
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1258 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME_AND_VENDOR, &avpvendorboolean, &avp_sampleboolean, ENOENT); |
| 0 | 1259 |
| 1260 } | |
| 1261 | |
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1262 - fd_dict_getval: |
| 0 | 1263 Sample code to retrieve the data from an AVP object: |
| 1264 { | |
| 1265 int ret; | |
| 1266 struct dict_object * avp_username; | |
| 1267 struct dict_avp_data user_name_data; | |
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1268 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME, "User-Name", &avp_username, ENOENT); |
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1269 ret = fd_dict_getval ( avp_username, &user_name_data ); |
| 0 | 1270 printf("User-Name code: %d\n", user_name_data.avp_code ); |
| 1271 } | |
| 1272 | |
| 1273 */ | |
| 1274 | |
| 1275 /* | |
| 1276 *************************************************************************** | |
| 1277 * | |
| 1278 * Command object | |
| 1279 * | |
| 1280 * These types are used to manage commands objects in the dictionary | |
| 1281 * | |
| 1282 *************************************************************************** | |
| 1283 */ | |
| 1284 | |
| 1285 /* Type to hold a Diameter command code: IANA assigned values. 0x0-0x7fffff=standard, 0x800000-0xfffffd=vendors, 0xfffffe-0xffffff=experimental */ | |
| 1286 typedef uint32_t command_code_t; | |
| 1287 | |
| 1288 /* Values of command flags */ | |
| 1289 #define CMD_FLAG_REQUEST 0x80 | |
| 1290 #define CMD_FLAG_PROXIABLE 0x40 | |
| 1291 #define CMD_FLAG_ERROR 0x20 | |
| 1292 #define CMD_FLAG_RETRANSMIT 0x10 | |
| 1293 #define CMD_FLAG_RESERVED5 0x08 | |
| 1294 #define CMD_FLAG_RESERVED6 0x04 | |
| 1295 #define CMD_FLAG_RESERVED7 0x02 | |
| 1296 #define CMD_FLAG_RESERVED8 0x01 | |
| 1297 | |
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1298 /* For dumping flags and values */ |
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1299 #define DUMP_CMDFL_str "%c%c%c%c" |
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1300 #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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1301 |
| 0 | 1302 /* Type to hold data associated to a command */ |
| 1303 struct dict_cmd_data { | |
| 1304 command_code_t cmd_code; /* code of the command */ | |
| 1305 char *cmd_name; /* Name of the command */ | |
| 1306 uint8_t cmd_flag_mask; /* Mask of fixed-value flags */ | |
| 1307 uint8_t cmd_flag_val; /* values of the fixed flags */ | |
| 1308 }; | |
| 1309 | |
| 1310 /* The criteria for searching an avp object in the dictionary */ | |
| 1311 enum { | |
| 1312 CMD_BY_NAME = 60, /* "what" points to a string */ | |
| 1313 CMD_BY_CODE_R, /* "what" points to a command_code_t. The "Request" command is returned. */ | |
| 1314 CMD_BY_CODE_A, /* "what" points to a command_code_t. The "Answer" command is returned. */ | |
| 1315 CMD_ANSWER /* "what" points to a struct dict_object of a request command. The corresponding "Answer" command is returned. */ | |
| 1316 }; | |
| 1317 | |
| 1318 | |
| 1319 /*** | |
| 1320 * API usage : | |
| 1321 | |
| 1322 The "parent" parameter of dict_new may point to an application object to inform of what application defines the command. | |
| 1323 The application associated to a command is retrieved with APPLICATION_OF_COMMAND search criteria on applications. | |
| 1324 | |
| 1325 To create the rules for children of commands, see the DICT_RULE related part. | |
| 1326 | |
| 1327 Note that the "Request" and "Answer" commands are two independant objects. This allows to have different rules for each. | |
| 1328 | |
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1329 - fd_dict_new: |
| 0 | 1330 Sample code for command creation: |
| 1331 { | |
| 1332 int ret; | |
| 1333 struct dict_object * cer; | |
| 1334 struct dict_object * cea; | |
| 1335 struct dict_cmd_data ce_data = { | |
| 1336 257, // code | |
| 1337 "Capabilities-Exchange-Request", // name | |
| 1338 CMD_FLAG_REQUEST, // mask | |
| 1339 CMD_FLAG_REQUEST // value. Only the "R" flag is constrained here, set. | |
| 1340 }; | |
| 1341 | |
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1342 ret = fd_dict_new (dict, DICT_COMMAND, &ce_data, NULL, &cer ); |
| 0 | 1343 |
| 1344 ce_data.cmd_name = "Capabilities-Exchange-Answer"; | |
| 1345 ce_data.cmd_flag_val = 0; // Same constraint on "R" flag, but this time it must be cleared. | |
| 1346 | |
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1347 ret = fd_dict_new ( dict, DICT_COMMAND, &ce_data, NULL, &cea ); |
| 0 | 1348 } |
| 1349 | |
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1350 - fd_dict_search: |
| 0 | 1351 Sample code to look for a command |
| 1352 { | |
| 1353 int ret; | |
| 1354 struct dict_object * cer, * cea; | |
| 1355 command_code_t code = 257; | |
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1356 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &cer, ENOENT); |
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1357 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_CODE_R, &code, &cer, ENOENT); |
| 0 | 1358 } |
| 1359 | |
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1360 - fd_dict_getval: |
| 0 | 1361 Sample code to retrieve the data from a command object: |
| 1362 { | |
| 1363 int ret; | |
| 1364 struct dict_object * cer; | |
| 1365 struct dict_object * cea; | |
| 1366 struct dict_cmd_data cea_data; | |
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1367 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &cer, ENOENT); |
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1368 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_ANSWER, cer, &cea, ENOENT); |
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1369 ret = fd_dict_getval ( cea, &cea_data ); |
| 0 | 1370 printf("Answer to CER: %s\n", cea_data.cmd_name ); |
| 1371 } | |
| 1372 | |
| 1373 */ | |
| 1374 | |
| 1375 /* | |
| 1376 *************************************************************************** | |
| 1377 * | |
| 1378 * Rule object | |
| 1379 * | |
| 1380 * These objects are used to manage rules in the dictionary (ABNF implementation) | |
| 1381 * This is used for checking messages validity (more powerful than a DTD) | |
| 1382 * | |
| 1383 *************************************************************************** | |
| 1384 */ | |
| 1385 | |
| 1386 /* This defines the kind of rule that is defined */ | |
| 1387 enum rule_position { | |
| 1388 RULE_FIXED_HEAD = 1, /* The AVP must be at the head of the group. The rule_order field is used to specify the position. */ | |
| 1389 RULE_REQUIRED, /* The AVP must be present in the parent, but its position is not defined. */ | |
| 1390 RULE_OPTIONAL, /* The AVP may be present in the message. Used to specify a max number of occurences for example */ | |
| 1391 RULE_FIXED_TAIL /* The AVP must be at the end of the group. The rule_order field is used to specify the position. */ | |
| 1392 }; | |
| 1393 | |
| 1394 /* Content of a RULE object data */ | |
| 1395 struct dict_rule_data { | |
| 1396 struct dict_object *rule_avp; /* Pointer to the AVP object that is concerned by this rule */ | |
| 1397 enum rule_position rule_position; /* The position in which the rule_avp must appear in the parent */ | |
| 1398 unsigned rule_order; /* for RULE_FIXED_* rules, the place. 1,2,3.. for HEAD rules; ...,3,2,1 for TAIL rules. */ | |
| 1399 int rule_min; /* Minimum number of occurences. -1 means "default": 0 for optional rules, 1 for other rules */ | |
| 1400 int rule_max; /* Maximum number of occurences. -1 means no maximum. 0 means the AVP is forbidden. */ | |
| 1401 }; | |
| 1402 | |
| 1403 /* The criteria for searching a rule in the dictionary */ | |
| 1404 enum { | |
| 1405 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?" */ | |
| 1406 }; | |
| 1407 | |
| 1408 /* Structure for querying the dictionary about a rule */ | |
| 1409 struct dict_rule_request { | |
| 1410 struct dict_object *rule_parent; /* The grouped avp or command to which the rule apply */ | |
| 1411 struct dict_object *rule_avp; /* The AVP concerned by this rule */ | |
| 1412 }; | |
| 1413 | |
| 1414 | |
| 1415 /*** | |
| 1416 * API usage : | |
| 1417 | |
| 1418 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). | |
| 1419 | |
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1420 - fd_dict_new: |
| 0 | 1421 Sample code for rule creation. Let's create the Proxy-Info grouped AVP for example. |
| 1422 { | |
| 1423 int ret; | |
| 1424 struct dict_object * proxy_info_avp; | |
| 1425 struct dict_object * proxy_host_avp; | |
| 1426 struct dict_object * proxy_state_avp; | |
| 1427 struct dict_object * diameteridentity_type; | |
| 1428 struct dict_rule_data rule_data; | |
| 1429 struct dict_type_data di_type_data = { AVP_TYPE_OCTETSTRING, "DiameterIdentity", NULL, NULL }; | |
| 1430 struct dict_avp_data proxy_info_data = { 284, 0, "Proxy-Info", AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_GROUPED }; | |
| 1431 struct dict_avp_data proxy_host_data = { 280, 0, "Proxy-Host", AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_OCTETSTRING }; | |
| 1432 struct dict_avp_data proxy_state_data = { 33, 0, "Proxy-State",AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_OCTETSTRING }; | |
| 1433 | |
| 1434 -- Create the parent AVP | |
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1435 ret = fd_dict_new ( dict, DICT_AVP, &proxy_info_data, NULL, &proxy_info_avp ); |
| 0 | 1436 |
| 1437 -- Create the first child AVP. | |
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1438 ret = fd_dict_new ( dict, DICT_TYPE, &di_type_data, NULL, &diameteridentity_type ); |
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1439 ret = fd_dict_new ( dict, DICT_AVP, &proxy_host_data, diameteridentity_type, &proxy_host_avp ); |
| 0 | 1440 |
| 1441 -- Create the other child AVP | |
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1442 ret = fd_dict_new ( dict, DICT_AVP, &proxy_state_data, NULL, &proxy_state_avp ); |
| 0 | 1443 |
| 1444 -- Now we can create the rules. Both children AVP are mandatory. | |
| 1445 rule_data.rule_position = RULE_REQUIRED; | |
| 1446 rule_data.rule_min = -1; | |
| 1447 rule_data.rule_max = -1; | |
| 1448 | |
| 1449 rule_data.rule_avp = proxy_host_avp; | |
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1450 ret = fd_dict_new ( dict, DICT_RULE, &rule_data, proxy_info_avp, NULL ); |
| 0 | 1451 |
| 1452 rule_data.rule_avp = proxy_state_avp; | |
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1453 ret = fd_dict_new ( dict, DICT_RULE, &rule_data, proxy_info_avp, NULL ); |
| 0 | 1454 } |
| 1455 | |
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1456 - fd_dict_search and fd_dict_getval are similar to previous examples. |
| 0 | 1457 |
| 1458 */ | |
| 1459 | |
| 1460 /* Define some hard-coded values */ | |
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1461 /* Application */ |
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1462 #define AI_RELAY 0xffffffff |
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1463 |
| 0 | 1464 /* Commands Codes */ |
| 1465 #define CC_CAPABILITIES_EXCHANGE 257 | |
| 1466 #define CC_RE_AUTH 258 | |
| 1467 #define CC_ACCOUNTING 271 | |
| 1468 #define CC_ABORT_SESSION 274 | |
| 1469 #define CC_SESSION_TERMINATION 275 | |
| 1470 #define CC_DEVICE_WATCHDOG 280 | |
| 1471 #define CC_DISCONNECT_PEER 282 | |
| 1472 | |
| 1473 /* AVPs (Vendor 0) */ | |
| 87 | 1474 #define AC_USER_NAME 1 |
| 0 | 1475 #define AC_PROXY_STATE 33 |
| 1476 #define AC_HOST_IP_ADDRESS 257 | |
| 1477 #define AC_AUTH_APPLICATION_ID 258 | |
| 1478 #define AC_ACCT_APPLICATION_ID 259 | |
| 1479 #define AC_VENDOR_SPECIFIC_APPLICATION_ID 260 | |
| 1480 #define AC_REDIRECT_HOST_USAGE 261 | |
| 1481 #define AC_REDIRECT_MAX_CACHE_TIME 262 | |
| 1482 #define AC_SESSION_ID 263 | |
| 1483 #define AC_ORIGIN_HOST 264 | |
| 1484 #define AC_SUPPORTED_VENDOR_ID 265 | |
| 1485 #define AC_VENDOR_ID 266 | |
| 1486 #define AC_FIRMWARE_REVISION 267 | |
| 1487 #define AC_RESULT_CODE 268 | |
| 1488 #define AC_PRODUCT_NAME 269 | |
| 1489 #define AC_DISCONNECT_CAUSE 273 | |
| 1490 #define ACV_DC_REBOOTING 0 | |
| 1491 #define ACV_DC_BUSY 1 | |
| 1492 #define ACV_DC_NOT_FRIEND 2 | |
| 1493 #define AC_ORIGIN_STATE_ID 278 | |
| 1494 #define AC_FAILED_AVP 279 | |
| 1495 #define AC_PROXY_HOST 280 | |
| 1496 #define AC_ERROR_MESSAGE 281 | |
| 1497 #define AC_ROUTE_RECORD 282 | |
| 1498 #define AC_DESTINATION_REALM 283 | |
| 1499 #define AC_PROXY_INFO 284 | |
| 1500 #define AC_REDIRECT_HOST 292 | |
| 1501 #define AC_DESTINATION_HOST 293 | |
| 1502 #define AC_ERROR_REPORTING_HOST 294 | |
| 1503 #define AC_ORIGIN_REALM 296 | |
| 1504 #define AC_INBAND_SECURITY_ID 299 | |
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1505 #define ACV_ISI_NO_INBAND_SECURITY 0 |
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1506 #define ACV_ISI_TLS 1 |
| 0 | 1507 |
| 1508 /* Error codes */ | |
| 1509 #define ER_DIAMETER_SUCCESS 2001 | |
| 1510 #define ER_DIAMETER_REALM_NOT_SERVED 3003 | |
| 1511 #define ER_DIAMETER_TOO_BUSY 3004 | |
| 1512 #define ER_DIAMETER_REDIRECT_INDICATION 3006 | |
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1513 #define ER_ELECTION_LOST 4003 |
| 0 | 1514 |
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1515 |
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1516 /*============================================================*/ |
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1517 /* SESSIONS */ |
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1518 /*============================================================*/ |
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1519 |
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1520 /* Modules that want to associate a state with a Session-Id must first register a handler of this type */ |
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1521 struct session_handler; |
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1522 |
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1523 /* This opaque structure represents a session associated with a Session-Id */ |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1524 struct session; |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1525 |
|
226
406f74f0789b
Few cosmetics changes
Sebastien Decugis <sdecugis@nict.go.jp>
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216
diff
changeset
|
1526 /* The state information that a module associate with a session -- each module defines its own data format */ |
|
3
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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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|
1527 typedef void session_state; |
|
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1528 |
|
453
9a8b3178a7a7
Postpone the creation of session expiry thread to allow some global variables to be set (debug level, etc)
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
340
diff
changeset
|
1529 /* The following function must be called to activate the session expiry mechanism */ |
|
9a8b3178a7a7
Postpone the creation of session expiry thread to allow some global variables to be set (debug level, etc)
Sebastien Decugis <sdecugis@nict.go.jp>
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340
diff
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|
1530 int fd_sess_start(void); |
|
9a8b3178a7a7
Postpone the creation of session expiry thread to allow some global variables to be set (debug level, etc)
Sebastien Decugis <sdecugis@nict.go.jp>
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340
diff
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|
1531 |
|
3
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parents:
2
diff
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|
1532 /* |
|
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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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|
1533 * FUNCTION: fd_sess_handler_create |
|
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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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|
1534 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1535 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1536 * 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
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|
1537 * cleanup : a callback function that must be called when the session with associated data is destroyed. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1538 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1539 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1540 * 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
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|
1541 * 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
|
1542 * 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
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|
1543 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1544 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1545 * 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
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|
1546 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1547 * 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
|
1548 */ |
|
340
81821e9f6988
Fix issue on session cleanup callback parameters -- thanks Souheil for reporting.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
336
diff
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|
1549 int fd_sess_handler_create_internal ( struct session_handler ** handler, void (*cleanup)(session_state * state, char * sid) ); |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1550 /* Macro to avoid casting everywhere */ |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1551 #define fd_sess_handler_create( _handler, _cleanup ) \ |
|
340
81821e9f6988
Fix issue on session cleanup callback parameters -- thanks Souheil for reporting.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
336
diff
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|
1552 fd_sess_handler_create_internal( (_handler), (void (*)(session_state *, char *))(_cleanup) ) |
|
3
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1553 |
|
340
81821e9f6988
Fix issue on session cleanup callback parameters -- thanks Souheil for reporting.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
336
diff
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|
1554 |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1555 /* |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1556 * FUNCTION: fd_sess_handler_destroy |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1557 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1558 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1559 * handler : location of an handler created by fd_sess_handler_create. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1560 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1561 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1562 * 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
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|
1563 * 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
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|
1564 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1565 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1566 * 0 : The handler was destroyed. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1567 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1568 * 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
|
1569 */ |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1570 int fd_sess_handler_destroy ( struct session_handler ** handler ); |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1571 |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1572 |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1573 |
|
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1574 /* |
|
3
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1575 * FUNCTION: fd_sess_new |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1576 * |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1577 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1578 * session : The location where the session object will be created upon success. |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1579 * diamId : \0-terminated string containing a Diameter Identity. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1580 * opt : Additional string. Usage is described bellow. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1581 * 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
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|
1582 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1583 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1584 * 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
|
1585 * 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
|
1586 * diamId is a Diameter Identity. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1587 * 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
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|
1588 * 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
|
1589 * 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
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|
1590 * |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1591 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1592 * 0 : The session is created. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1593 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1594 * 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
|
1595 * 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
|
1596 */ |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1597 int fd_sess_new ( struct session ** session, char * diamId, char * opt, size_t optlen ); |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1598 |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1599 /* |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1600 * FUNCTION: fd_sess_fromsid |
|
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1601 * |
|
ef303f1078ab
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parents:
2
diff
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|
1602 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1603 * sid : pointer to a string containing a Session-Id (UTF-8). |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
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|
1604 * 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>
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2
diff
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|
1605 * session : On success, pointer to the session object created / retrieved. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
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2
diff
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|
1606 * new : 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
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parents:
1
diff
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|
1607 * |
|
3
ef303f1078ab
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2
diff
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|
1608 * DESCRIPTION: |
|
85
e5fcd672caff
Added new function to retrieve messages sessions easily
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
83
diff
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|
1609 * Retrieve a session object from a Session-Id string. In case no session object was previously existing with this |
|
3
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parents:
2
diff
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|
1610 * 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
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parents:
2
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|
1611 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
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2
diff
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|
1612 * RETURN VALUE: |
|
ef303f1078ab
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parents:
2
diff
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|
1613 * 0 : The session parameter has been updated. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
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2
diff
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|
1614 * 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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|
1615 * ENOMEM : Not enough memory to complete the operation |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
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2
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|
1616 */ |
|
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2
diff
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|
1617 int fd_sess_fromsid ( char * sid, size_t len, struct session ** session, int * new); |
|
ef303f1078ab
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|
1618 |
|
ef303f1078ab
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|
1619 /* |
|
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|
1620 * FUNCTION: fd_sess_getsid |
|
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
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|
1621 * |
|
ef303f1078ab
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|
1622 * PARAMETERS: |
|
ef303f1078ab
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diff
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|
1623 * session : Pointer to a session object. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1624 * sid : On success, the location of a (\0-terminated) string is stored here. |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
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1
diff
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|
1625 * |
|
3
ef303f1078ab
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|
1626 * DESCRIPTION: |
|
ef303f1078ab
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changeset
|
1627 * Retrieve the session identifier (Session-Id) corresponding to a session object. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1628 * The returned sid is an UTF-8 string terminated by \0, suitable for calls to strlen and strcpy. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1629 * It may be used for example to set the value of an AVP. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1630 * Note that the sid string is not copied, just its reference... do not free it! |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1631 * |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1632 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1633 * 0 : The sid parameter has been updated. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1634 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1635 */ |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1636 int fd_sess_getsid ( struct session * session, char ** sid ); |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1637 |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1638 /* |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1639 * FUNCTION: fd_sess_settimeout |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1640 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1641 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1642 * session : The session for which to set the timeout. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1643 * timeout : The date when the session times out. |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1644 * |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1645 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1646 * 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
changeset
|
1647 * 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
changeset
|
1648 * 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:
2
diff
changeset
|
1649 * module that registered data with this session is called, then the |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1650 * session is cleared. |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1651 * |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1652 * There is a possible race condition between cleanup of the session |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1653 * 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
diff
changeset
|
1654 * using data from a session that is about to expire / expired. |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1655 * |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1656 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1657 * 0 : The session timeout has been updated. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1658 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1659 */ |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1660 int fd_sess_settimeout( struct session * session, const struct timespec * timeout ); |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1661 |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1662 /* |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1663 * FUNCTION: fd_sess_destroy |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1664 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1665 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1666 * session : Pointer to a session object. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1667 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1668 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1669 * Destroys a session an all associated data, if any. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1670 * Equivalent to a session timeout expired, but the effect is immediate. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1671 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1672 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1673 * 0 : The session no longer exists. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1674 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1675 */ |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1676 int fd_sess_destroy ( struct session ** session ); |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1677 |
|
6
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1678 /* |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1679 * FUNCTION: fd_sess_reclaim |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1680 * |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1681 * PARAMETERS: |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1682 * session : Pointer to a session object. |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1683 * |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1684 * DESCRIPTION: |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1685 * Destroys the resources of a session, only if no session_state is associated with it. |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1686 * |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1687 * RETURN VALUE: |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1688 * 0 : The session no longer exists. |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1689 * EINVAL : A parameter is invalid. |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1690 */ |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1691 int fd_sess_reclaim ( struct session ** session ); |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1692 |
|
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1693 |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1694 |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1695 |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1696 /* |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1697 * FUNCTION: fd_sess_state_store |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1698 * |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1699 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1700 * handler : The handler with which the state is registered. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1701 * session : The session object with which the state is registered. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1702 * state : An application state (opaque data) to store with the session. |
|
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 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1705 * Stores an application state with a session. This state can later be retrieved |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1706 * with fd_sess_state_retrieve, or implicitly in the cleanup handler when the session |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1707 * is destroyed. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1708 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1709 * RETURN VALUE: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1710 * 0 : The state has been stored. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1711 * EINVAL : A parameter is invalid. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1712 * EALREADY : Data was already associated with this session and client. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1713 * 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
|
1714 */ |
|
6
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1715 int fd_sess_state_store_internal ( struct session_handler * handler, struct session * session, session_state ** state ); |
|
5
c2d2729e3603
Completed new session module tests; some bugs fixed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
3
diff
changeset
|
1716 #define fd_sess_state_store( _handler, _session, _state ) \ |
|
6
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1717 fd_sess_state_store_internal( (_handler), (_session), (void *)(_state) ) |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1718 |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1719 /* |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1720 * FUNCTION: fd_sess_state_retrieve |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1721 * |
|
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1722 * PARAMETERS: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1723 * handler : The handler with which the state was registered. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1724 * session : The session object with which the state was registered. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1725 * state : Location where the state must be saved if it is found. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1726 * |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1727 * DESCRIPTION: |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1728 * Retrieves a state saved by fd_sess_state_store. |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1729 * After this function has been called, the state is no longer associated with |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1730 * the session. A new call to fd_sess_state_store must be performed in order to |
|
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1731 * store again the data with the session. |
|
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
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|
1732 * |
|
3
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1733 * RETURN VALUE: |
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1734 * 0 : *state is updated (NULL or points to the state if it was found). |
|
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1735 * EINVAL : A parameter is invalid. |
|
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1736 */ |
|
6
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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|
1737 int fd_sess_state_retrieve_internal ( struct session_handler * handler, struct session * session, session_state ** state ); |
|
5
c2d2729e3603
Completed new session module tests; some bugs fixed
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|
1738 #define fd_sess_state_retrieve( _handler, _session, _state ) \ |
|
6
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Progress on dispatch API spec; added fd_sess_reclaim function and test
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|
1739 fd_sess_state_retrieve_internal( (_handler), (_session), (void *)(_state) ) |
|
2
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Added a global debug level var
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|
1740 |
|
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|
1741 |
|
3
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|
1742 /* For debug */ |
|
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1743 void fd_sess_dump(int level, struct session * session); |
|
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|
1744 void fd_sess_dump_hdl(int level, struct session_handler * handler); |
|
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|
1745 |
|
2
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|
1746 |
|
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|
1747 /*============================================================*/ |
|
83
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|
1748 /* ROUTING */ |
|
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|
1749 /*============================================================*/ |
|
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|
1750 |
|
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|
1751 /* The following functions are helpers for the routing module. |
|
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1752 The routing data is stored in the message itself. */ |
|
83
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1753 |
|
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1754 /* Structure that contains the routing data for a message */ |
|
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1755 struct rt_data; |
|
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|
1756 |
|
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|
1757 /* Following functions are helpers to create the routing data of a message */ |
|
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|
1758 int fd_rtd_init(struct rt_data ** rtd); |
|
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|
1759 void fd_rtd_free(struct rt_data ** rtd); |
|
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|
1760 |
|
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|
1761 /* Add a peer to the candidates list */ |
|
168
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1762 int fd_rtd_candidate_add(struct rt_data * rtd, char * peerid, char * realm); |
|
83
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|
1763 |
|
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|
1764 /* Remove a peer from the candidates (if it is found) */ |
|
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1765 void fd_rtd_candidate_del(struct rt_data * rtd, char * peerid, size_t sz /* if !0, peerid does not need to be \0 terminated */); |
|
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|
1766 |
|
88
9e2db1647d6f
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1767 /* Extract the list of valid candidates, and initialize their scores to 0 */ |
|
124
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1768 void fd_rtd_candidate_extract(struct rt_data * rtd, struct fd_list ** candidates, int ini_score); |
|
88
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1769 |
|
83
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1770 /* 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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1771 int fd_rtd_error_add(struct rt_data * rtd, char * sentto, uint8_t * origin, size_t originsz, uint32_t rcode); |
|
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1772 |
|
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1773 /* The extracted list items have the following structure: */ |
|
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1774 struct rtd_candidate { |
|
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1775 struct fd_list chain; /* link in the list returned by the previous fct */ |
|
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1776 char * diamid; /* the diameter Id of the peer */ |
|
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1777 char * realm; /* the diameter realm of the peer (if known) */ |
|
83
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1778 int score; /* the current routing score for this peer, see fd_rt_out_register definition for details */ |
|
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1779 }; |
|
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1780 |
|
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|
1781 /* Reorder the list of peers */ |
|
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1782 int fd_rtd_candidate_reorder(struct fd_list * candidates); |
|
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1783 |
|
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1784 /* 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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1785 /* Beware that this could lead to routing loops */ |
|
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1786 |
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1787 /*============================================================*/ |
| 0 | 1788 /* MESSAGES */ |
| 1789 /*============================================================*/ | |
| 1790 | |
| 1791 /* The following types are opaque */ | |
| 1792 struct msg; /* A message: command with children AVPs (possibly grand children) */ | |
| 1793 struct avp; /* AVP object */ | |
| 1794 | |
| 1795 /* Some details about chaining: | |
| 1796 * | |
| 1797 * A message is made of a header ( msg ) and 0 or more AVPs ( avp ). | |
| 1798 * The structure is a kind of tree, where some AVPs (grouped AVPs) can contain other AVPs. | |
| 1799 * Exemple: | |
| 1800 * msg | |
| 1801 * |-avp | |
| 1802 * |-gavp | |
| 1803 * | |-avp | |
| 1804 * | |-avp | |
| 1805 * | \-avp | |
| 1806 * |-avp | |
| 1807 * \-avp | |
| 1808 * | |
| 1809 */ | |
| 1810 | |
| 1811 /* The following type is used to point to either a msg or an AVP */ | |
| 1812 typedef void msg_or_avp; | |
| 1813 | |
| 1814 /* The Diameter protocol version */ | |
| 1815 #define DIAMETER_VERSION 1 | |
| 1816 | |
| 1817 /* In the two following types, some fields are marked (READONLY). | |
| 1818 * This means that the content of these fields will be overwritten by the daemon so modifying it is useless. | |
| 1819 */ | |
| 1820 | |
| 1821 /* The following structure represents the header of a message. All data is in host byte order. */ | |
| 1822 struct msg_hdr { | |
| 1823 uint8_t msg_version; /* (READONLY) Version of Diameter: must be DIAMETER_VERSION. */ | |
| 1824 uint32_t msg_length; /* (READONLY)(3 bytes) indicates the length of the message */ | |
| 1825 uint8_t msg_flags; /* Message flags: CMD_FLAG_* */ | |
| 1826 command_code_t msg_code; /* (3 bytes) the command-code. See dictionary-api.h for more detail */ | |
| 1827 application_id_t msg_appl; /* The application issuing this message */ | |
| 1828 uint32_t msg_hbhid; /* The Hop-by-Hop identifier of the message */ | |
| 1829 uint32_t msg_eteid; /* The End-to-End identifier of the message */ | |
| 1830 }; | |
| 1831 | |
| 1832 /* The following structure represents the visible content of an AVP. All data is in host byte order. */ | |
| 1833 struct avp_hdr { | |
| 1834 avp_code_t avp_code; /* the AVP Code */ | |
| 1835 uint8_t avp_flags; /* AVP_FLAG_* flags */ | |
| 1836 uint32_t avp_len; /* (READONLY)(Only 3 bytes are used) the length of the AVP as described in the RFC */ | |
| 1837 vendor_id_t avp_vendor; /* Only used if AVP_FLAG_VENDOR is present */ | |
| 1838 union avp_value *avp_value; /* pointer to the value of the AVP. NULL means that the value is not set / not understood. | |
| 1839 One should not directly change this value. Use the msg_avp_setvalue function instead. | |
| 1840 The content of the pointed structure can be changed directly, with this restriction: | |
| 1841 if the AVP is an OctetString, and you change the value of the pointer avp_value->os.data, then | |
| 1842 you must call free() on the previous value, and the new one must be free()-able. | |
| 1843 */ | |
| 1844 }; | |
| 1845 | |
| 1846 /* The following enum is used to browse inside message hierarchy (msg, gavp, avp) */ | |
| 1847 enum msg_brw_dir { | |
| 1848 MSG_BRW_NEXT = 1, /* Get the next element at the same level, or NULL if this is the last element. */ | |
| 1849 MSG_BRW_PREV, /* Get the previous element at the same level, or NULL if this is the first element. */ | |
| 1850 MSG_BRW_FIRST_CHILD, /* Get the first child AVP of this element, if any. */ | |
| 1851 MSG_BRW_LAST_CHILD, /* Get the last child AVP of this element, if any. */ | |
| 1852 MSG_BRW_PARENT, /* Get the parent element of this element, if any. Only the msg_t object has no parent. */ | |
| 1853 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. */ | |
| 1854 }; | |
| 1855 | |
| 1856 /* Some flags used in the functions bellow */ | |
| 1857 #define MSGFL_ALLOC_ETEID 0x01 /* When creating a message, a new end-to-end ID is allocated and set in the message */ | |
| 1858 #define MSGFL_ANSW_ERROR 0x02 /* When creating an answer message, set the 'E' bit and use the generic error ABNF instead of command-specific ABNF */ | |
|
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1859 #define MSGFL_ANSW_NOSID 0x04 /* When creating an answer message, do not add the Session-Id even if present in request */ |
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1860 #define MSGFL_MAX MSGFL_ANSW_NOSID /* The biggest valid flag value */ |
| 0 | 1861 |
| 1862 /**************************************************/ | |
| 1863 /* Message creation, manipulation, disposal */ | |
| 1864 /**************************************************/ | |
| 1865 /* | |
| 1866 * FUNCTION: fd_msg_avp_new | |
| 1867 * | |
| 1868 * PARAMETERS: | |
| 1869 * model : Pointer to a DICT_AVP dictionary object describing the avp to create, or NULL. | |
| 1870 * flags : Flags to use in creation (not used yet, should be 0). | |
| 1871 * avp : Upon success, pointer to the new avp is stored here. | |
| 1872 * | |
| 1873 * DESCRIPTION: | |
| 1874 * Create a new AVP instance. | |
| 1875 * | |
| 1876 * RETURN VALUE: | |
| 1877 * 0 : The AVP is created. | |
| 1878 * EINVAL : A parameter is invalid. | |
| 1879 * (other standard errors may be returned, too, with their standard meaning. Example: | |
| 1880 * ENOMEM : Memory allocation for the new avp failed.) | |
| 1881 */ | |
| 1882 int fd_msg_avp_new ( struct dict_object * model, int flags, struct avp ** avp ); | |
| 1883 | |
| 1884 /* | |
| 1885 * FUNCTION: fd_msg_new | |
| 1886 * | |
| 1887 * PARAMETERS: | |
| 1888 * model : Pointer to a DICT_COMMAND dictionary object describing the message to create, or NULL. | |
| 1889 * flags : combination of MSGFL_* flags. | |
| 1890 * msg : Upon success, pointer to the new message is stored here. | |
| 1891 * | |
| 1892 * DESCRIPTION: | |
| 1893 * Create a new empty Diameter message. | |
| 1894 * | |
| 1895 * RETURN VALUE: | |
| 1896 * 0 : The message is created. | |
| 1897 * EINVAL : A parameter is invalid. | |
| 1898 * (other standard errors may be returned, too, with their standard meaning. Example: | |
| 1899 * ENOMEM : Memory allocation for the new message failed.) | |
| 1900 */ | |
| 1901 int fd_msg_new ( struct dict_object * model, int flags, struct msg ** msg ); | |
| 1902 | |
| 1903 /* | |
| 1904 * FUNCTION: msg_new_answer_from_req | |
| 1905 * | |
| 1906 * PARAMETERS: | |
| 1907 * dict : Pointer to the dictionary containing the model of the query. | |
| 1908 * msg : The location of the query on function call. Updated by the location of answer message on return. | |
| 1909 * flag : Pass MSGFL_ANSW_ERROR to indicate if the answer is an error message (will set the 'E' bit) | |
| 1910 * | |
| 1911 * DESCRIPTION: | |
| 1912 * This function creates the empty answer message corresponding to a request. | |
| 1913 * The header is set properly (R flag, ccode, appid, hbhid, eteid) | |
| 1914 * The Session-Id AVP is copied if present. | |
| 1915 * The calling code should usually call fd_msg_rescode_set function on the answer. | |
| 1916 * Upon return, the original query may be retrieved by calling fd_msg_answ_getq on the message. | |
| 1917 * | |
| 1918 * RETURN VALUE: | |
| 1919 * 0 : Operation complete. | |
| 1920 * !0 : an error occurred. | |
| 1921 */ | |
| 1922 int fd_msg_new_answer_from_req ( struct dictionary * dict, struct msg ** msg, int flag ); | |
| 1923 | |
| 1924 /* | |
| 1925 * FUNCTION: fd_msg_browse | |
| 1926 * | |
| 1927 * PARAMETERS: | |
| 1928 * reference : Pointer to a struct msg or struct avp. | |
| 1929 * dir : Direction for browsing | |
| 1930 * found : If not NULL, updated with the element that has been found, if any, or NULL if no element was found / an error occurred. | |
| 1931 * 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. | |
| 1932 * | |
| 1933 * DESCRIPTION: | |
| 1934 * Explore the content of a message object (hierarchy). If "found" is null, only error checking is performed. | |
| 1935 * If "depth" is provided, it is updated as follow on successful function return: | |
| 1936 * - not modified for MSG_BRW_NEXT and MSG_BRW_PREV. | |
| 1937 * - *depth = *depth + 1 for MSG_BRW_FIRST_CHILD and MSG_BRW_LAST_CHILD. | |
| 1938 * - *depth = *depth - 1 for MSG_BRW_PARENT. | |
| 1939 * - *depth = *depth + X for MSG_BRW_WALK, with X between 1 (returned the 1st child) and -N (returned the Nth parent's next). | |
| 1940 * | |
| 1941 * RETURN VALUE: | |
| 1942 * 0 : found has been updated (if non NULL). | |
| 1943 * EINVAL : A parameter is invalid. | |
| 1944 * ENOENT : No element has been found where requested, and "found" was NULL (otherwise, *found is set to NULL and 0 is returned). | |
| 1945 */ | |
| 1946 int fd_msg_browse_internal ( msg_or_avp * reference, enum msg_brw_dir dir, msg_or_avp ** found, int * depth ); | |
| 1947 /* Macro to avoid having to cast the third parameter everywhere */ | |
| 1948 #define fd_msg_browse( ref, dir, found, depth ) \ | |
| 1949 fd_msg_browse_internal( (ref), (dir), (void *)(found), (depth) ) | |
| 1950 | |
| 1951 | |
| 1952 /* | |
| 1953 * FUNCTION: fd_msg_avp_add | |
| 1954 * | |
| 1955 * PARAMETERS: | |
| 1956 * reference : Pointer to a valid msg or avp. | |
| 1957 * dir : location where the new AVP should be inserted, relative to the reference. MSG_BRW_PARENT and MSG_BRW_WALK are not valid. | |
| 1958 * avp : pointer to the AVP object that must be inserted. | |
| 1959 * | |
| 1960 * DESCRIPTION: | |
| 1961 * Adds an AVP into an object that can contain it: grouped AVP or message. | |
|
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1962 * Note that the added AVP will be freed at the same time as the object it is added to, |
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1963 * so it should not be freed after the call to this function. |
| 0 | 1964 * |
| 1965 * RETURN VALUE: | |
| 1966 * 0 : The AVP has been added. | |
| 1967 * EINVAL : A parameter is invalid. | |
| 1968 */ | |
| 1969 int fd_msg_avp_add ( msg_or_avp * reference, enum msg_brw_dir dir, struct avp *avp); | |
| 1970 | |
| 1971 /* | |
| 1972 * FUNCTION: fd_msg_search_avp | |
| 1973 * | |
| 1974 * PARAMETERS: | |
| 1975 * msg : The message structure in which to search the AVP. | |
| 1976 * what : The dictionary model of the AVP to search. | |
| 1977 * avp : location where the AVP reference is stored if found. | |
| 1978 * | |
| 1979 * DESCRIPTION: | |
| 1980 * Search the first top-level AVP of a given model inside a message. | |
| 1981 * Note: only the first instance of the AVP is returned by this function. | |
| 1982 * Note: only top-level AVPs are searched, not inside grouped AVPs. | |
| 1983 * Use msg_browse if you need more advanced research features. | |
| 1984 * | |
| 1985 * RETURN VALUE: | |
| 1986 * 0 : The AVP has been found. | |
| 1987 * EINVAL : A parameter is invalid. | |
| 1988 * ENOENT : No AVP has been found, and "avp" was NULL (otherwise, *avp is set to NULL and 0 returned). | |
| 1989 */ | |
| 1990 int fd_msg_search_avp ( struct msg * msg, struct dict_object * what, struct avp ** avp ); | |
| 1991 | |
| 1992 /* | |
| 1993 * FUNCTION: fd_msg_free | |
| 1994 * | |
| 1995 * PARAMETERS: | |
| 1996 * object : pointer to the message or AVP object that must be unlinked and freed. | |
| 1997 * | |
| 1998 * DESCRIPTION: | |
| 1999 * Unlink and free a message or AVP object and its children. | |
| 2000 * If the object is an AVP linked into a message, the AVP is removed before being freed. | |
| 2001 * | |
| 2002 * RETURN VALUE: | |
| 2003 * 0 : The message has been freed. | |
| 2004 * EINVAL : A parameter is invalid. | |
| 2005 */ | |
| 2006 int fd_msg_free ( msg_or_avp * object ); | |
| 2007 | |
| 2008 /***************************************/ | |
| 2009 /* Dump functions */ | |
| 2010 /***************************************/ | |
| 2011 /* | |
| 2012 * FUNCTION: fd_msg_dump_* | |
| 2013 * | |
| 2014 * PARAMETERS: | |
| 2015 * level : the log level (INFO, FULL, ...) at which the object is dumped | |
| 2016 * obj : A msg or avp object. | |
| 2017 * | |
| 2018 * DESCRIPTION: | |
| 2019 * These functions dump the content of a message to the debug log | |
| 2020 * either recursively or only the object itself. | |
| 2021 * | |
| 2022 * RETURN VALUE: | |
| 2023 * - | |
| 2024 */ | |
| 2025 void fd_msg_dump_walk ( int level, msg_or_avp *obj ); | |
| 2026 void fd_msg_dump_one ( int level, msg_or_avp *obj ); | |
| 2027 | |
| 2028 | |
| 2029 /*********************************************/ | |
| 2030 /* Message metadata management functions */ | |
| 2031 /*********************************************/ | |
| 2032 /* | |
| 2033 * FUNCTION: fd_msg_model | |
| 2034 * | |
| 2035 * PARAMETERS: | |
| 2036 * reference : Pointer to a valid msg or avp. | |
| 2037 * model : on success, pointer to the dictionary model of this command or AVP. NULL if the model is unknown. | |
| 2038 * | |
| 2039 * DESCRIPTION: | |
| 2040 * Retrieve the dictionary object describing this message or avp. If the object is unknown or the fd_msg_parse_dict has not been called, | |
| 2041 * *model is set to NULL. | |
| 2042 * | |
| 2043 * RETURN VALUE: | |
| 2044 * 0 : The model has been set. | |
| 2045 * EINVAL : A parameter is invalid. | |
| 2046 */ | |
| 2047 int fd_msg_model ( msg_or_avp * reference, struct dict_object ** model ); | |
| 2048 | |
| 2049 /* | |
| 2050 * FUNCTION: fd_msg_hdr | |
| 2051 * | |
| 2052 * PARAMETERS: | |
| 2053 * msg : Pointer to a valid message object. | |
| 2054 * pdata : Upon success, pointer to the msg_hdr structure of this message. The fields may be modified. | |
| 2055 * | |
| 2056 * DESCRIPTION: | |
| 2057 * Retrieve location of modifiable section of a message. | |
| 2058 * | |
| 2059 * RETURN VALUE: | |
| 2060 * 0 : The location has been written. | |
| 2061 * EINVAL : A parameter is invalid. | |
| 2062 */ | |
| 2063 int fd_msg_hdr ( struct msg *msg, struct msg_hdr **pdata ); | |
| 2064 | |
| 2065 /* | |
| 2066 * FUNCTION: fd_msg_avp_hdr | |
| 2067 * | |
| 2068 * PARAMETERS: | |
| 2069 * avp : Pointer to a valid avp object. | |
| 2070 * pdata : Upon success, pointer to the avp_hdr structure of this avp. The fields may be modified. | |
| 2071 * | |
| 2072 * DESCRIPTION: | |
| 2073 * Retrieve location of modifiable data of an avp. | |
| 2074 * | |
| 2075 * RETURN VALUE: | |
| 2076 * 0 : The location has been written. | |
| 2077 * EINVAL : A parameter is invalid. | |
| 2078 */ | |
| 2079 int fd_msg_avp_hdr ( struct avp *avp, struct avp_hdr **pdata ); | |
| 2080 | |
| 2081 /* | |
| 2082 * FUNCTION: fd_msg_answ_associate, fd_msg_answ_getq, fd_msg_answ_detach | |
| 2083 * | |
| 2084 * PARAMETERS: | |
| 2085 * answer : the received answer message | |
| 2086 * query : the corresponding query that had been sent | |
| 2087 * | |
| 2088 * DESCRIPTION: | |
| 2089 * fd_msg_answ_associate associates a query msg with the received answer. | |
| 2090 * Query is retrieved with fd_msg_answ_getq. | |
| 2091 * If answer message is freed, the query is also freed. | |
| 2092 * If the msg_answ_detach function is called, the association is removed. | |
| 2093 * This is meant to be called from the daemon only. | |
| 2094 * | |
| 2095 * RETURN VALUE: | |
| 2096 * 0 : ok | |
| 2097 * EINVAL: a parameter is invalid | |
| 2098 */ | |
| 2099 int fd_msg_answ_associate( struct msg * answer, struct msg * query ); | |
| 2100 int fd_msg_answ_getq ( struct msg * answer, struct msg ** query ); | |
| 2101 int fd_msg_answ_detach ( struct msg * answer ); | |
| 2102 | |
| 2103 /* | |
| 2104 * FUNCTION: fd_msg_anscb_associate, fd_msg_anscb_get | |
| 2105 * | |
| 2106 * PARAMETERS: | |
| 2107 * msg : the answer message | |
| 2108 * anscb : the callback to associate with the message | |
| 2109 * data : the data to pass to the callback | |
| 2110 * | |
| 2111 * DESCRIPTION: | |
| 2112 * Associate or retrieve a callback with an answer message. | |
| 2113 * This is meant to be called from the daemon only. | |
| 2114 * | |
| 2115 * RETURN VALUE: | |
| 2116 * 0 : ok | |
| 2117 * EINVAL: a parameter is invalid | |
| 2118 */ | |
| 2119 int fd_msg_anscb_associate( struct msg * msg, void ( *anscb)(void *, struct msg **), void * data ); | |
| 2120 int fd_msg_anscb_get ( struct msg * msg, void (**anscb)(void *, struct msg **), void ** data ); | |
| 2121 | |
| 2122 /* | |
| 2123 * FUNCTION: fd_msg_rt_associate, fd_msg_rt_get | |
| 2124 * | |
| 2125 * PARAMETERS: | |
| 2126 * msg : the query message to be sent | |
| 2127 * list : the ordered list of possible next-peers | |
| 2128 * | |
| 2129 * DESCRIPTION: | |
| 2130 * Associate a routing list with a query, and retrieve it. | |
| 2131 * If the message is freed, the list is also freed. | |
| 2132 * | |
| 2133 * RETURN VALUE: | |
| 2134 * 0 : ok | |
| 2135 * EINVAL: a parameter is invalid | |
| 2136 */ | |
|
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2137 int fd_msg_rt_associate( struct msg * msg, struct rt_data ** rtd ); |
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2138 int fd_msg_rt_get ( struct msg * msg, struct rt_data ** rtd ); |
| 0 | 2139 |
| 2140 /* | |
| 2141 * FUNCTION: fd_msg_is_routable | |
| 2142 * | |
| 2143 * PARAMETERS: | |
| 2144 * msg : A msg object. | |
| 2145 * | |
| 2146 * DESCRIPTION: | |
| 2147 * This function returns a boolean telling if a given message is routable in the Diameter network, | |
| 2148 * or if it is a local link message only (ex: CER/CEA, DWR/DWA, ...). | |
| 2149 * | |
| 2150 * RETURN VALUE: | |
| 2151 * 0 : The message is not routable / an error occurred. | |
| 2152 * 1 : The message is routable. | |
| 2153 */ | |
| 2154 int fd_msg_is_routable ( struct msg * msg ); | |
| 2155 | |
| 2156 /* | |
| 2157 * FUNCTION: fd_msg_source_(g/s)et | |
| 2158 * | |
| 2159 * PARAMETERS: | |
| 2160 * msg : A msg object. | |
| 2161 * diamid : The diameter id of the peer from which this message was received. | |
| 2162 * hash : The hash for the diamid value. | |
| 2163 * add_rr : if true, a Route-Record AVP is added to the message with content diamid. In that case, dict must be supplied. | |
| 2164 * dict : a dictionary with definition of Route-Record AVP (if add_rr is true) | |
| 2165 * | |
| 2166 * DESCRIPTION: | |
| 2167 * Store or retrieve the diameted id of the peer from which this message was received. | |
| 2168 * Will be used for example by the routing module to add the Route-Record AVP in forwarded requests, | |
| 2169 * or to direct answers to the appropriate peer. | |
| 2170 * | |
| 2171 * RETURN VALUE: | |
| 2172 * 0 : Operation complete. | |
| 2173 * !0 : an error occurred. | |
| 2174 */ | |
|
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2175 int fd_msg_source_set( struct msg * msg, char * diamid, int add_rr, struct dictionary * dict ); |
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2176 int fd_msg_source_get( struct msg * msg, char ** diamid ); |
| 0 | 2177 |
| 2178 /* | |
| 2179 * FUNCTION: fd_msg_eteid_get | |
| 2180 * | |
| 2181 * PARAMETERS: | |
| 2182 * - | |
| 2183 * | |
| 2184 * DESCRIPTION: | |
| 2185 * Get a new unique end-to-end id value for the local peer. | |
| 2186 * | |
| 2187 * RETURN VALUE: | |
| 2188 * The new assigned value. No error code is defined. | |
| 2189 */ | |
| 2190 uint32_t fd_msg_eteid_get ( void ); | |
| 2191 | |
| 2192 | |
|
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2193 /* |
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2194 * FUNCTION: fd_msg_sess_get |
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2195 * |
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2196 * PARAMETERS: |
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2197 * dict : the dictionary that contains the Session-Id AVP definition |
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2198 * msg : A valid message. |
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2199 * session : Location to store the session pointer when retrieved. |
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2200 * new : Indicates if the session has been created. |
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2201 * |
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2202 * DESCRIPTION: |
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2203 * This function retrieves or creates the session object corresponding to a message. |
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2204 * If the message does not contain a Session-Id AVP, *session == NULL on return. |
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2205 * Note that the Session-Id AVP must never be modified after created in a message. |
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2206 * |
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2207 * RETURN VALUE: |
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2208 * 0 : success |
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2209 * !0 : standard error code. |
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2210 */ |
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2211 int fd_msg_sess_get(struct dictionary * dict, struct msg * msg, struct session ** session, int * new); |
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2212 |
| 0 | 2213 /***************************************/ |
| 2214 /* Manage AVP values */ | |
| 2215 /***************************************/ | |
| 2216 | |
| 2217 /* | |
| 2218 * FUNCTION: fd_msg_avp_setvalue | |
| 2219 * | |
| 2220 * PARAMETERS: | |
| 2221 * avp : Pointer to a valid avp object with a NULL avp_value pointer. The model must be known. | |
| 2222 * value : pointer to an avp_value. The content will be COPIED into the internal storage area. | |
| 2223 * If data type is an octetstring, the data is also copied. | |
| 2224 * If value is a NULL pointer, the previous data is erased and value is unset in the AVP. | |
| 2225 * | |
| 2226 * DESCRIPTION: | |
| 2227 * Initialize the avp_value field of an AVP header. | |
| 2228 * | |
| 2229 * RETURN VALUE: | |
| 2230 * 0 : The avp_value pointer has been set. | |
| 2231 * EINVAL : A parameter is invalid. | |
| 2232 */ | |
| 2233 int fd_msg_avp_setvalue ( struct avp *avp, union avp_value *value ); | |
| 2234 | |
| 2235 /* | |
| 2236 * FUNCTION: fd_msg_avp_value_encode | |
| 2237 * | |
| 2238 * PARAMETERS: | |
| 2239 * avp : Pointer to a valid avp object with a NULL avp_value. The model must be known. | |
| 2240 * data : Pointer to the data that must be encoded as AVP value and stored in the AVP. | |
| 2241 * This is only valid for AVPs of derived type for which type_data_encode callback is set. (ex: Address type) | |
| 2242 * | |
| 2243 * DESCRIPTION: | |
| 2244 * Initialize the avp_value field of an AVP object from formatted data, using the AVP's type "type_data_encode" callback. | |
| 2245 * | |
| 2246 * RETURN VALUE: | |
| 2247 * 0 : The avp_value has been set. | |
| 2248 * EINVAL : A parameter is invalid. | |
| 2249 * ENOTSUP : There is no appropriate callback registered with this AVP's type. | |
| 2250 */ | |
| 2251 int fd_msg_avp_value_encode ( void *data, struct avp *avp ); | |
| 2252 | |
| 2253 /* | |
| 2254 * FUNCTION: fd_msg_avp_value_interpret | |
| 2255 * | |
| 2256 * PARAMETERS: | |
| 2257 * avp : Pointer to a valid avp object with a non-NULL avp_value value. | |
| 2258 * data : Upon success, formatted interpretation of the AVP value is stored here. | |
| 2259 * | |
| 2260 * DESCRIPTION: | |
| 2261 * Interpret the content of an AVP of Derived type and store the result in data pointer. The structure | |
| 2262 * of the data pointer is dependent on the AVP type. This function calls the "type_data_interpret" callback | |
| 2263 * of the type. | |
| 2264 * | |
| 2265 * RETURN VALUE: | |
| 2266 * 0 : The avp_value has been set. | |
| 2267 * EINVAL : A parameter is invalid. | |
| 2268 * ENOTSUP : There is no appropriate callback registered with this AVP's type. | |
| 2269 */ | |
| 2270 int fd_msg_avp_value_interpret ( struct avp *avp, void *data ); | |
| 2271 | |
| 2272 | |
| 2273 /***************************************/ | |
| 2274 /* Message parsing functions */ | |
| 2275 /***************************************/ | |
| 2276 | |
| 2277 /* | |
| 2278 * FUNCTION: fd_msg_bufferize | |
| 2279 * | |
| 2280 * PARAMETERS: | |
| 2281 * msg : A valid msg object. All AVPs must have a value set. | |
| 2282 * buffer : Upon success, this points to a buffer (malloc'd) containing the message ready for network transmission (or security transformations). | |
| 2283 * The buffer may be freed after use. | |
| 2284 * len : if not NULL, the size of the buffer is written here. In any case, this size is updated in the msg header. | |
| 2285 * | |
| 2286 * DESCRIPTION: | |
| 2287 * Renders a message in memory as a buffer that can be sent over the network to the next peer. | |
| 2288 * | |
| 2289 * RETURN VALUE: | |
| 2290 * 0 : The location has been written. | |
| 2291 * EINVAL : The buffer does not contain a valid Diameter message. | |
| 2292 * ENOMEM : Unable to allocate enough memory to create the buffer object. | |
| 2293 */ | |
| 2294 int fd_msg_bufferize ( struct msg * msg, unsigned char ** buffer, size_t * len ); | |
| 2295 | |
| 2296 /* | |
| 2297 * FUNCTION: fd_msg_parse_buffer | |
| 2298 * | |
| 2299 * PARAMETERS: | |
| 2300 * buffer : Pointer to a buffer containing a message received from the network. | |
| 2301 * buflen : the size in bytes of the buffer. | |
| 2302 * msg : Upon success, this points to a valid msg object. No AVP value is resolved in this object, nor grouped AVP. | |
| 2303 * | |
| 2304 * DESCRIPTION: | |
| 2305 * This function parses a buffer an creates a msg object to represent the structure of the message. | |
| 2306 * Since no dictionary lookup is performed, the values of the AVPs are not interpreted. To interpret the values, | |
| 2307 * the returned message object must be passed to fd_msg_parse_dict function. | |
| 2308 * The buffer pointer is saved inside the message and will be freed when not needed anymore. | |
| 2309 * | |
| 2310 * RETURN VALUE: | |
| 2311 * 0 : The location has been written. | |
| 2312 * ENOMEM : Unable to allocate enough memory to create the msg object. | |
| 2313 * EBADMSG : The buffer does not contain a valid Diameter message (or is truncated). | |
| 2314 * EINVAL : A parameter is invalid. | |
| 2315 */ | |
| 2316 int fd_msg_parse_buffer ( unsigned char ** buffer, size_t buflen, struct msg ** msg ); | |
| 2317 | |
|
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2318 /* Parsing Error Information structure */ |
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2319 struct fd_pei { |
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2320 char * pei_errcode; /* name of the error code to use */ |
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2321 struct avp * pei_avp; /* pointer to invalid or missing AVP (to be freed) */ |
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2322 char * pei_message; /* Overwrite default message if needed */ |
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2323 int pei_protoerr; /* do we set the 'E' bit in the error message ? */ |
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2324 }; |
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2325 |
| 0 | 2326 /* |
| 2327 * FUNCTION: fd_msg_parse_dict | |
| 2328 * | |
| 2329 * PARAMETERS: | |
| 2330 * object : A msg or AVP object as returned by fd_msg_parse_buffer. | |
| 2331 * dict : the dictionary containing the objects definitions to use for resolving all AVPs. | |
|
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2332 * error_info : If not NULL, will contain the detail about error upon return. May be used to generate an error reply. |
| 0 | 2333 * |
| 2334 * DESCRIPTION: | |
| 2335 * This function looks up for the command and each children AVP definitions in the dictionary. | |
| 2336 * If the dictionary definition is found, avp_model is set and the value of the AVP is interpreted accordingly and: | |
| 2337 * - for grouped AVPs, the children AVP are created and interpreted also. | |
| 2338 * - for numerical AVPs, the value is converted to host byte order and saved in the avp_value field. | |
| 2339 * - for octetstring AVPs, the string is copied into a new buffer and its address is saved in avp_value. | |
| 2340 * If the dictionary definition is not found, avp_model is set to NULL and | |
| 2341 * the content of the AVP is saved as an octetstring in an internal structure. avp_value is NULL. | |
| 2342 * As a result, after this function has been called, there is no more dependency of the msg object to the message buffer, that is be freed. | |
| 2343 * | |
| 2344 * RETURN VALUE: | |
| 2345 * 0 : The message has been fully parsed as described. | |
| 2346 * EINVAL : The msg parameter is invalid for this operation. | |
| 2347 * ENOMEM : Unable to allocate enough memory to complete the operation. | |
| 2348 * ENOTSUP : No dictionary definition for the command or one of the mandatory AVP was found. | |
| 2349 */ | |
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2350 int fd_msg_parse_dict ( msg_or_avp * object, struct dictionary * dict, struct fd_pei *error_info ); |
|
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2351 |
| 0 | 2352 /* |
| 2353 * FUNCTION: fd_msg_parse_rules | |
| 2354 * | |
| 2355 * PARAMETERS: | |
| 2356 * object : A msg or grouped avp object that must be verified. | |
| 2357 * dict : The dictionary containing the rules definitions. | |
|
34
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2358 * error_info : If not NULL, the first problem information will be saved here. |
| 0 | 2359 * |
| 2360 * DESCRIPTION: | |
| 2361 * Check that the children of the object do not conflict with the dictionary rules (ABNF compliance). | |
| 2362 * | |
| 2363 * RETURN VALUE: | |
| 2364 * 0 : The message has been fully parsed and complies to the defined rules. | |
| 2365 * EBADMSG : A conflict was detected, or a mandatory AVP is unknown in the dictionary. | |
| 2366 * EINVAL : The msg or avp object is invalid for this operation. | |
| 2367 * ENOMEM : Unable to allocate enough memory to complete the operation. | |
| 2368 */ | |
|
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2369 int fd_msg_parse_rules ( msg_or_avp * object, struct dictionary * dict, struct fd_pei *error_info); |
|
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2370 |
| 0 | 2371 |
| 2372 | |
| 2373 /* | |
| 2374 * FUNCTION: fd_msg_update_length | |
| 2375 * | |
| 2376 * PARAMETERS: | |
| 2377 * object : Pointer to a valid msg or avp. | |
| 2378 * | |
| 2379 * DESCRIPTION: | |
| 2380 * Update the length field of the object passed as parameter. | |
| 2381 * As a side effect, all children objects are also updated. Therefore, all avp_value fields of | |
| 2382 * the children AVPs must be set, or an error will occur. | |
| 2383 * | |
| 2384 * RETURN VALUE: | |
| 2385 * 0 : The size has been recomputed. | |
| 2386 * EINVAL : A parameter is invalid. | |
| 2387 */ | |
| 2388 int fd_msg_update_length ( msg_or_avp * object ); | |
| 2389 | |
| 2390 | |
|
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2391 /*============================================================*/ |
|
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2392 /* DISPATCH */ |
|
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2393 /*============================================================*/ |
|
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2394 |
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2395 /* Dispatch module (passing incoming messages to extensions registered callbacks) |
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2396 * is split between the library and the daemon. |
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2397 * |
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2398 * The library provides the support for associating dispatch callbacks with |
|
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2399 * dictionary objects. |
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2400 * |
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2401 * The daemon is responsible for calling the callbacks for a message when appropriate. |
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2402 * |
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2403 * |
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2404 * The dispatch module has two main roles: |
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2405 * - help determine if a message can be handled locally (during the routing step) |
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2406 * This decision involves only the application-id of the message. |
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2407 * - pass the message to the callback(s) that will handle it (during the dispatch step) |
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2408 * |
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2409 * The first role is handled by the daemon. |
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2410 * |
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2411 * About the second, these are the possibilities for registering a dispatch callback: |
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2412 * |
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2413 * -> For All messages. |
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2414 * This callback is called for all messages that are handled locally. This should be used only |
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2415 * for debug purpose. |
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2416 * |
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2417 * -> by AVP value (constants only). |
|
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2418 * This callback will be called when a message is received and contains an AVP with a specified enumerated value. |
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2419 * |
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2420 * -> by AVP. |
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2421 * This callback will be called when the received message contains a certain AVP. |
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2422 * |
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2423 * -> by command-code. |
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2424 * This callback will be called when the message is a specific command (and 'R' flag). |
|
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2425 * |
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2426 * -> by application. |
|
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2427 * This callback will be called when the message has a specific application-id. |
|
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2428 * |
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2429 * ( by vendor: would this be useful? it may be added later) |
|
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2430 */ |
|
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|
2431 enum disp_how { |
|
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2432 DISP_HOW_ANY = 1, /* Any message. This should be only used for debug. */ |
|
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2433 DISP_HOW_APPID, /* Any message with the specified application-id */ |
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2434 DISP_HOW_CC, /* Messages of the specified command-code (request or answer). App id may be specified. */ |
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2435 DISP_HOW_AVP, /* Messages containing a specific AVP. Command-code and App id may be specified. */ |
|
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2436 DISP_HOW_AVP_ENUMVAL /* Messages containing a specific AVP with a specific enumerated value. Command-code and App id may be specified. */ |
|
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2437 }; |
|
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2438 /* |
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2439 * Several criteria may be selected at the same time, for example command-code AND application id. |
|
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2440 * |
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2441 * If several callbacks are registered for the same object, they are called in the order they were registered. |
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2442 * The order in which the callbacks are called is: |
|
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2443 * DISP_HOW_ANY |
|
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2444 * DISP_HOW_AVP_ENUMVAL & DISP_HOW_AVP |
|
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2445 * DISP_HOW_CC |
|
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2446 * DISP_HOW_APPID |
|
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|
2447 */ |
|
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|
2448 |
|
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|
2449 /* When a callback is registered, a "when" argument is passed in addition to the disp_how value, |
|
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|
2450 * to specify which values the criteria must match. */ |
|
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|
2451 struct disp_when { |
|
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|
2452 struct dict_object * app; |
|
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|
2453 struct dict_object * command; |
|
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2454 struct dict_object * avp; |
|
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|
2455 struct dict_object * value; |
|
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|
2456 }; |
|
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|
2457 |
|
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|
2458 /* Note that all the dictionary objects should really belong to the same dictionary! |
|
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2459 * |
|
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|
2460 * Here is the details on this "when" argument, depending on the disp_how value. |
|
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2461 * |
|
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|
2462 * DISP_HOW_ANY. |
|
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2463 * In this case, "when" must be NULL. |
|
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2464 * |
|
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|
2465 * DISP_HOW_APPID. |
|
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2466 * Only the "app_id" field must be set, other fields are ignored. It points to a dictionary object of type DICT_APPLICATION. |
|
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2467 * |
|
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|
2468 * DISP_HOW_CC. |
|
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2469 * The "command" field must be defined and point to a dictionary object of type DICT_COMMAND. |
|
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2470 * The "app_id" may be also set. In the case it is set, it restricts the callback to be called only with this command-code and app id. |
|
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2471 * The other fields are ignored. |
|
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2472 * |
|
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|
2473 * DISP_HOW_AVP. |
|
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2474 * The "avp" field of the structure must be set and point to a dictionary object of type DICT_AVP. |
|
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2475 * The "app_id" field may be set to restrict the messages matching to a specific app id. |
|
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2476 * The "command" field may also be set to a valid DICT_COMMAND object. |
|
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|
2477 * The content of the "value" field is ignored. |
|
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|
2478 * |
|
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|
2479 * DISP_HOW_AVP_ENUMVAL. |
|
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|
2480 * All fields have the same constraints and meaning as in DISP_REG_AVP. In addition, the "value" field must be set |
|
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|
2481 * and points to a valid DICT_ENUMVAL object. |
|
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|
2482 * |
|
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2483 * Here is a sumary of the fields: ( M : must be set; m : may be set; 0 : ignored ) |
|
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|
2484 * field: app_id command avp value |
|
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|
2485 * APPID : M 0 0 0 |
|
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|
2486 * CC : m M 0 0 |
|
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|
2487 * AVP : m m M 0 |
|
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|
2488 * ENUMVA: m m M M |
|
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|
2489 */ |
|
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|
2490 |
|
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|
2491 enum disp_action { |
|
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diff
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|
2492 DISP_ACT_CONT, /* The next handler should be called, unless *msg == NULL. */ |
|
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|
2493 DISP_ACT_SEND, /* The updated message must be sent. No further callback is called. */ |
|
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Added the dispatch thread code
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|
2494 DISP_ACT_ERROR /* An error must be created and sent as a reply -- not valid for callbacks, only for fd_msg_dispatch. */ |
|
7
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diff
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|
2495 }; |
|
e5af94b04946
Added dispatch module and tests
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diff
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|
2496 /* The callbacks that are registered have the following prototype: |
|
e5af94b04946
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6
diff
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|
2497 * int dispatch_callback( struct msg ** msg, struct avp * avp, struct session * session, enum disp_action * action ); |
|
e5af94b04946
Added dispatch module and tests
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diff
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|
2498 * |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2499 * CALLBACK: dispatch_callback |
|
e5af94b04946
Added dispatch module and tests
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diff
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|
2500 * |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2501 * PARAMETERS: |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2502 * msg : the received message on function entry. may be updated to answer on return (see description) |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2503 * avp : for callbacks registered with DISP_HOW_AVP or DISP_HOW_AVP_ENUMVAL, direct link to the triggering AVP. |
|
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2504 * session : if the message contains a Session-Id AVP, the corresponding session object, NULL otherwise. |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2505 * action : upon return, this tells the daemon what to do next. |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2506 * |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2507 * DESCRIPTION: |
|
e5af94b04946
Added dispatch module and tests
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diff
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|
2508 * Called when a received message matchs the condition for which the callback was registered. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2509 * This callback may do any kind of processing on the message, including: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2510 * - create an answer for a request. |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
changeset
|
2511 * - proxy a request or message, add / remove the Proxy-Info AVP, then forward the message. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2512 * - update a routing table or start a connection with a new peer, then forward the message. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2513 * - ... |
|
e5af94b04946
Added dispatch module and tests
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parents:
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diff
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|
2514 * |
|
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Added dispatch module and tests
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diff
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|
2515 * 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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diff
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|
2516 * When *action == DISP_ACT_CONT, the next registered callback is called. |
|
e5af94b04946
Added dispatch module and tests
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diff
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|
2517 * When the last callback gives also DISP_ACT_CONT action value, a default handler is called. It's behavior is as follow: |
|
e5af94b04946
Added dispatch module and tests
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diff
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|
2518 * - if the message is an answer, it is discarded. |
|
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Added dispatch module and tests
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diff
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|
2519 * - if the message is a request, it is passed again to the routing stack, and marked as non-local handling. |
|
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Added dispatch module and tests
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|
2520 * |
|
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Added dispatch module and tests
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|
2521 * RETURN VALUE: |
|
e5af94b04946
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|
2522 * 0 : The callback executed successfully and updated *action appropriately. |
|
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6
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|
2523 * !0 : standard errors. In case of error, the message is discarded. |
|
e5af94b04946
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|
2524 */ |
|
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Added dispatch module and tests
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diff
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|
2525 |
|
e5af94b04946
Added dispatch module and tests
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|
2526 /* This structure represents a handler for a registered callback, allowing its de-registration */ |
|
e5af94b04946
Added dispatch module and tests
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|
2527 struct disp_hdl; |
|
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Added dispatch module and tests
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|
2528 |
|
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Added dispatch module and tests
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|
2529 /* |
|
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Added dispatch module and tests
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|
2530 * FUNCTION: fd_disp_register |
|
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Added dispatch module and tests
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|
2531 * |
|
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Added dispatch module and tests
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|
2532 * PARAMETERS: |
|
e5af94b04946
Added dispatch module and tests
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|
2533 * cb : The callback function to register (see dispatch_callback description above). |
|
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Added dispatch module and tests
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|
2534 * how : How the callback must be registered. |
|
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Added dispatch module and tests
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6
diff
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|
2535 * when : Values that must match, depending on the how argument. |
|
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Added dispatch module and tests
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diff
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|
2536 * handle : On success, a handler to the registered callback is stored here if not NULL. |
|
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|
2537 * This handler can be used to unregister the cb. |
|
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Added dispatch module and tests
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6
diff
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|
2538 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2539 * DESCRIPTION: |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2540 * Register a new callback to handle messages delivered locally. |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2541 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2542 * RETURN VALUE: |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2543 * 0 : The callback is registered. |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2544 * EINVAL : A parameter is invalid. |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2545 * ENOMEM : Not enough memory to complete the operation |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2546 */ |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2547 int fd_disp_register ( int (*cb)( struct msg **, struct avp *, struct session *, enum disp_action *), |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
changeset
|
2548 enum disp_how how, struct disp_when * when, struct disp_hdl ** handle ); |
|
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Added dispatch module and tests
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6
diff
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|
2549 |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2550 /* |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2551 * FUNCTION: fd_disp_unregister |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2552 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2553 * PARAMETERS: |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2554 * handle : Location of the handle of the callback that must be unregistered. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2555 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2556 * DESCRIPTION: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2557 * Removes a callback previously registered by fd_disp_register. |
|
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2558 * |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2559 * RETURN VALUE: |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2560 * 0 : The callback is unregistered. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2561 * EINVAL : A parameter is invalid. |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2562 */ |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2563 int fd_disp_unregister ( struct disp_hdl ** handle ); |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2564 |
|
90
2c9444152e4b
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|
2565 /* Destroy all handlers */ |
|
2c9444152e4b
Added the dispatch thread code
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88
diff
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|
2566 void fd_disp_unregister_all ( void ); |
|
2c9444152e4b
Added the dispatch thread code
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88
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|
2567 |
|
7
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6
diff
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|
2568 /* |
|
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2569 * FUNCTION: fd_msg_dispatch |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2570 * |
|
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2571 * PARAMETERS: |
|
e5af94b04946
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diff
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|
2572 * msg : A msg object that have already been fd_msg_parse_dict. |
|
e5af94b04946
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6
diff
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|
2573 * session : The session corresponding to this object, if any. |
|
e5af94b04946
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6
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|
2574 * action : Upon return, the action that must be taken on the message |
|
e5af94b04946
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6
diff
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|
2575 * |
|
e5af94b04946
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6
diff
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|
2576 * DESCRIPTION: |
|
e5af94b04946
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diff
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|
2577 * Call all handlers registered for a given message. |
|
e5af94b04946
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diff
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|
2578 * The session must have already been resolved on entry. |
|
e5af94b04946
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6
diff
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|
2579 * The msg pointed may be updated during this process. |
|
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6
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|
2580 * Upon return, the action parameter points to what must be done next. |
|
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|
2581 * |
|
e5af94b04946
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diff
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|
2582 * RETURN VALUE: |
|
e5af94b04946
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diff
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|
2583 * 0 : Success. |
|
e5af94b04946
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diff
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|
2584 * EINVAL : A parameter is invalid. |
|
e5af94b04946
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6
diff
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|
2585 * (other errors) |
|
e5af94b04946
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6
diff
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|
2586 */ |
|
90
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|
2587 int fd_msg_dispatch ( struct msg ** msg, struct session * session, enum disp_action *action, const char ** error_code ); |
|
7
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|
2588 |
|
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|
2589 |
| 0 | 2590 |
| 2591 /*============================================================*/ | |
|
8
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|
2592 /* QUEUES */ |
| 0 | 2593 /*============================================================*/ |
| 2594 | |
|
8
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|
2595 /* Management of FIFO queues of elements */ |
| 0 | 2596 |
|
8
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|
2597 /* A queue is an opaque object */ |
|
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|
2598 struct fifo; |
| 0 | 2599 |
| 2600 /* | |
|
8
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|
2601 * FUNCTION: fd_fifo_new |
| 0 | 2602 * |
| 2603 * PARAMETERS: | |
|
8
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|
2604 * queue : Upon success, a pointer to the new queue is saved here. |
| 0 | 2605 * |
| 2606 * DESCRIPTION: | |
|
8
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|
2607 * Create a new empty queue. |
| 0 | 2608 * |
| 2609 * RETURN VALUE : | |
|
8
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|
2610 * 0 : The queue has been initialized successfully. |
| 0 | 2611 * EINVAL : The parameter is invalid. |
| 2612 * ENOMEM : Not enough memory to complete the creation. | |
| 2613 */ | |
|
8
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|
2614 int fd_fifo_new ( struct fifo ** queue ); |
| 0 | 2615 |
| 2616 /* | |
|
8
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|
2617 * FUNCTION: fd_fifo_del |
| 0 | 2618 * |
| 2619 * PARAMETERS: | |
|
8
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|
2620 * queue : Pointer to an empty queue to delete. |
| 0 | 2621 * |
| 2622 * DESCRIPTION: | |
|
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2623 * Destroys a queue. This is only possible if no thread is waiting for an element, |
| 0 | 2624 * and the queue is empty. |
| 2625 * | |
| 2626 * RETURN VALUE: | |
|
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2627 * 0 : The queue has been destroyed successfully. |
| 0 | 2628 * EINVAL : The parameter is invalid. |
| 2629 */ | |
|
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2630 int fd_fifo_del ( struct fifo ** queue ); |
| 0 | 2631 |
| 2632 /* | |
|
25
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2633 * FUNCTION: fd_fifo_move |
|
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2634 * |
|
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|
2635 * PARAMETERS: |
|
43
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2636 * old : Location of a FIFO that is to be emptied. |
|
25
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2637 * new : A FIFO that will receive the old data. |
|
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Completed connection context files
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2638 * loc_update : if non NULL, a place to store the pointer to new FIFO atomically with the move. |
|
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Completed connection context files
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|
2639 * |
|
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|
2640 * DESCRIPTION: |
|
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2641 * Empties a queue and move its content to another one atomically. |
|
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|
2642 * |
|
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|
2643 * RETURN VALUE: |
|
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|
2644 * 0 : The queue has been destroyed successfully. |
|
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|
2645 * EINVAL : A parameter is invalid. |
|
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|
2646 */ |
|
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|
2647 int fd_fifo_move ( struct fifo * old, struct fifo * new, struct fifo ** loc_update ); |
|
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2648 |
|
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|
2649 /* |
|
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2650 * FUNCTION: fd_fifo_length |
| 0 | 2651 * |
| 2652 * PARAMETERS: | |
|
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2653 * queue : The queue from which to retrieve the number of elements. |
|
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2654 * length : Upon success, the current number of elements in the queue is stored here. |
| 0 | 2655 * |
| 2656 * DESCRIPTION: | |
|
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2657 * Retrieve the number of elements in a queue. |
| 0 | 2658 * |
| 2659 * RETURN VALUE: | |
| 2660 * 0 : The length of the queue has been written. | |
| 2661 * EINVAL : A parameter is invalid. | |
| 2662 */ | |
|
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2663 int fd_fifo_length ( struct fifo * queue, int * length ); |
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2664 int fd_fifo_length_noerr ( struct fifo * queue ); /* no error checking version */ |
| 0 | 2665 |
| 2666 /* | |
|
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2667 * FUNCTION: fd_fifo_setthrhd |
| 0 | 2668 * |
| 2669 * PARAMETERS: | |
| 2670 * queue : The queue for which the thresholds are being set. | |
| 2671 * data : An opaque pointer that is passed to h_cb and l_cb callbacks. | |
| 2672 * high : The high-level threshold. If the number of elements in the queue increase to this value, h_cb is called. | |
| 2673 * h_cb : if not NULL, a callback to call when the queue lengh is bigger than "high". | |
| 2674 * low : The low-level threshold. Must be < high. | |
| 2675 * l_cb : If the number of elements decrease to low, this callback is called. | |
| 2676 * | |
| 2677 * DESCRIPTION: | |
| 2678 * This function allows to adjust the number of producer / consumer threads of a queue. | |
|
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2679 * If the consumer are slower than the producers, the number of elements in the queue increase. |
| 0 | 2680 * By setting a "high" value, we allow a callback to be called when this number is too high. |
| 2681 * The typical use would be to create an additional consumer thread in this callback. | |
| 2682 * If the queue continues to grow, the callback will be called again when the length is 2 * high, then 3*high, ... N * high | |
|
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2683 * (the callback itself should implement a limit on the number of consumers that can be created) |
| 0 | 2684 * When the queue starts to decrease, and the number of elements go under ((N - 1) * high + low, the l_cb callback is called |
|
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2685 * 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 | 2686 * and so on. |
| 2687 * | |
| 2688 * Since there is no destructor for the data pointer, if cleanup operations are required, they should be performed in | |
| 2689 * l_cb when the length of the queue is becoming < low. | |
| 2690 * | |
|
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2691 * Note that the callbacks are called synchronously, during fd_fifo_post or fd_fifo_get. Their operation should be quick. |
| 0 | 2692 * |
| 2693 * RETURN VALUE: | |
| 2694 * 0 : The thresholds have been set | |
| 2695 * EINVAL : A parameter is invalid. | |
| 2696 */ | |
|
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2697 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 | 2698 |
| 2699 /* | |
|
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2700 * FUNCTION: fd_fifo_post |
| 0 | 2701 * |
| 2702 * PARAMETERS: | |
|
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2703 * queue : The queue in which the element must be posted. |
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2704 * item : The element that is put in the queue. |
| 0 | 2705 * |
| 2706 * DESCRIPTION: | |
|
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2707 * An element is added in a queue. Elements are retrieved from the queue in FIFO order |
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2708 * with the fd_fifo_get, fd_fifo_tryget, or fd_fifo_timedget functions. |
| 0 | 2709 * |
| 2710 * RETURN VALUE: | |
|
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2711 * 0 : The element is queued. |
| 0 | 2712 * EINVAL : A parameter is invalid. |
| 2713 * ENOMEM : Not enough memory to complete the operation. | |
| 2714 */ | |
|
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2715 int fd_fifo_post_int ( struct fifo * queue, void ** item ); |
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2716 #define fd_fifo_post(queue, item) \ |
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2717 fd_fifo_post_int((queue), (void *)(item)) |
| 0 | 2718 |
| 2719 /* | |
|
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2720 * FUNCTION: fd_fifo_get |
| 0 | 2721 * |
| 2722 * PARAMETERS: | |
|
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2723 * queue : The queue from which the first element must be retrieved. |
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2724 * item : On return, the first element of the queue is stored here. |
| 0 | 2725 * |
| 2726 * DESCRIPTION: | |
|
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2727 * This function retrieves the first element from a queue. If the queue is empty, the function will block the |
|
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2728 * thread until a new element is posted to the queue, or until the thread is canceled (in which case the |
| 0 | 2729 * function does not return). |
| 2730 * | |
| 2731 * RETURN VALUE: | |
|
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2732 * 0 : A new element has been retrieved. |
| 0 | 2733 * EINVAL : A parameter is invalid. |
| 2734 */ | |
|
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2735 int fd_fifo_get_int ( struct fifo * queue, void ** item ); |
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2736 #define fd_fifo_get(queue, item) \ |
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2737 fd_fifo_get_int((queue), (void *)(item)) |
| 0 | 2738 |
| 2739 /* | |
|
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2740 * FUNCTION: fd_fifo_tryget |
| 0 | 2741 * |
| 2742 * PARAMETERS: | |
|
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2743 * queue : The queue from which the element must be retrieved. |
|
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2744 * item : On return, the first element of the queue is stored here. |
| 0 | 2745 * |
| 2746 * DESCRIPTION: | |
|
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2747 * This function is similar to fd_fifo_get, except that it will not block if |
| 0 | 2748 * the queue is empty, but return EWOULDBLOCK instead. |
| 2749 * | |
| 2750 * RETURN VALUE: | |
|
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2751 * 0 : A new element has been retrieved. |
| 0 | 2752 * EINVAL : A parameter is invalid. |
| 2753 * EWOULDBLOCK : The queue was empty. | |
| 2754 */ | |
|
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2755 int fd_fifo_tryget_int ( struct fifo * queue, void ** item ); |
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2756 #define fd_fifo_tryget(queue, item) \ |
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2757 fd_fifo_tryget_int((queue), (void *)(item)) |
| 0 | 2758 |
| 2759 /* | |
|
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2760 * FUNCTION: fd_fifo_timedget |
| 0 | 2761 * |
| 2762 * PARAMETERS: | |
|
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2763 * queue : The queue from which the element must be retrieved. |
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2764 * item : On return, the element is stored here. |
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2765 * abstime : the absolute time until which we allow waiting for an item. |
| 0 | 2766 * |
| 2767 * DESCRIPTION: | |
|
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2768 * This function is similar to fd_fifo_get, except that it will block if the queue is empty |
| 0 | 2769 * only until the absolute time abstime (see pthread_cond_timedwait for + info). |
| 2770 * If the queue is still empty when the time expires, the function returns ETIMEDOUT | |
| 2771 * | |
| 2772 * RETURN VALUE: | |
|
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2773 * 0 : A new item has been retrieved. |
| 0 | 2774 * EINVAL : A parameter is invalid. |
|
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2775 * ETIMEDOUT : The time out has passed and no item has been received. |
| 0 | 2776 */ |
|
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2777 int fd_fifo_timedget_int ( struct fifo * queue, void ** item, const struct timespec *abstime ); |
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2778 #define fd_fifo_timedget(queue, item, abstime) \ |
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2779 fd_fifo_timedget_int((queue), (void *)(item), (abstime)) |
| 0 | 2780 |
|
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2781 /* Dump a fifo list and optionally its inner elements -- beware of deadlocks! */ |
|
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|
2782 void fd_fifo_dump(int level, char * name, struct fifo * queue, void (*dump_item)(int level, void * item)); |
|
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2783 |
| 0 | 2784 #endif /* _LIBFREEDIAMETER_H */ |