Mercurial > hg > freeDiameter
annotate include/freeDiameter/libfreeDiameter.h @ 639:95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
author | Sebastien Decugis <sdecugis@nict.go.jp> |
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date | Mon, 20 Dec 2010 13:07:06 +0900 |
parents | 9448cba86673 |
children | cfc8da9264f4 |
rev | line source |
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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 * | |
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY S_OUT OF THE USE OF THIS SOFTWARE, EVEN IF * |
0 | 33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * |
34 *********************************************************************************************************/ | |
35 | |
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36 /* This file contains the definitions of functions and types used by the libfreeDiameter library. |
0 | 37 * |
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38 * This library is meant to be used by both the freeDiameter daemon and its extensions. |
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39 * It provides the tools to manipulate Diameter messages and related data. |
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40 * This file should always be included as #include <freeDiameter/libfreeDiameter.h> |
0 | 41 * |
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42 * If any change is made to this file, you must increment the FD_PROJECT_VERSION_API version. |
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43 * |
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44 * The file contains the following parts: |
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45 * DEBUG |
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46 * MACROS |
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47 * 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 | |
205
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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 /* INIT */ |
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82 /*============================================================*/ |
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83 |
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84 /* This function must be called first, before any call to another library function */ |
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85 /* If the parameter is not 0, the support for signals (fd_sig_register) is enabled, otherwise it is disabled */ |
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86 /* The function must be called while the application is single-threaded to enable support for signals */ |
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87 int fd_lib_init(int support_signals); |
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88 |
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89 /* Call this one when the application terminates, to destroy internal threads */ |
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90 void fd_lib_fini(void); |
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91 |
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92 |
0 | 93 /*============================================================*/ |
94 /* DEBUG */ | |
95 /*============================================================*/ | |
96 | |
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97 |
0 | 98 /* |
99 * FUNCTION: fd_log_debug | |
100 * | |
101 * PARAMETERS: | |
102 * format : Same format string as in the printf function | |
103 * ... : Same list as printf | |
104 * | |
105 * DESCRIPTION: | |
106 * Log internal information for use of developpers only. | |
107 * The format and arguments may contain UTF-8 encoded data. The | |
108 * output medium (file or console) is expected to support this encoding. | |
109 * | |
110 * This function assumes that a global mutex called "fd_log_lock" exists | |
111 * in the address space of the current process. | |
112 * | |
113 * RETURN VALUE: | |
114 * None. | |
115 */ | |
116 void fd_log_debug ( char * format, ... ); | |
117 extern pthread_mutex_t fd_log_lock; | |
174
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118 extern char * fd_debug_one_function; |
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119 extern char * fd_debug_one_file; |
0 | 120 |
121 /* | |
122 * FUNCTION: fd_log_threadname | |
123 * | |
124 * PARAMETERS: | |
125 * name : \0-terminated string containing a name to identify the current thread. | |
126 * | |
127 * DESCRIPTION: | |
128 * Name the current thread, useful for debugging multi-threaded problems. | |
129 * | |
130 * This function assumes that a global thread-specific key called "fd_log_thname" exists | |
131 * in the address space of the current process. | |
132 * | |
133 * RETURN VALUE: | |
134 * None. | |
135 */ | |
136 void fd_log_threadname ( char * name ); | |
137 extern pthread_key_t fd_log_thname; | |
138 | |
139 /* | |
140 * FUNCTION: fd_log_time | |
141 * | |
142 * PARAMETERS: | |
22
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143 * ts : The timestamp to log, or NULL for "now" |
0 | 144 * buf : An array where the time must be stored |
145 * len : size of the buffer | |
146 * | |
147 * DESCRIPTION: | |
22
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148 * Writes the timestamp (in human readable format) in a buffer. |
0 | 149 * |
150 * RETURN VALUE: | |
151 * pointer to buf. | |
152 */ | |
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153 char * fd_log_time ( struct timespec * ts, char * buf, size_t len ); |
0 | 154 |
155 | |
226
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156 /*============================================================*/ |
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157 /* DEBUG MACROS */ |
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158 /*============================================================*/ |
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159 |
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160 #ifndef ASSERT |
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161 #define ASSERT(x) assert(x) |
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162 #endif /* ASSERT */ |
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163 |
0 | 164 /* levels definitions */ |
165 #define NONE 0 /* Display no debug message */ | |
166 #define INFO 1 /* Display errors only */ | |
167 #define FULL 2 /* Display additional information to follow code execution */ | |
168 #define ANNOYING 4 /* Very verbose, for example in loops */ | |
169 #define FCTS 6 /* Display entry parameters of most functions */ | |
170 #define CALL 9 /* Display calls to most functions (with CHECK macros) */ | |
171 | |
172 /* Default level is INFO */ | |
173 #ifndef TRACE_LEVEL | |
174 #define TRACE_LEVEL INFO | |
175 #endif /* TRACE_LEVEL */ | |
176 | |
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177 /* The level of the file being compiled. */ |
0 | 178 static int local_debug_level = TRACE_LEVEL; |
179 | |
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180 /* A global level, changed by configuration or cmd line for example. default is 0. */ |
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181 extern int fd_g_debug_lvl; |
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182 |
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183 /* Some portability code to get nice function name in __PRETTY_FUNCTION__ */ |
0 | 184 #if __STDC_VERSION__ < 199901L |
185 # if __GNUC__ >= 2 | |
186 # define __func__ __FUNCTION__ | |
187 # else /* __GNUC__ >= 2 */ | |
188 # define __func__ "<unknown>" | |
189 # endif /* __GNUC__ >= 2 */ | |
190 #endif /* __STDC_VERSION__ < 199901L */ | |
191 #ifndef __PRETTY_FUNCTION__ | |
192 #define __PRETTY_FUNCTION__ __func__ | |
193 #endif /* __PRETTY_FUNCTION__ */ | |
194 | |
205
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195 /* A version of __FILE__ without the full path */ |
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196 static char * file_bname = NULL; |
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197 #define __STRIPPED_FILE__ (file_bname ?: (file_bname = basename(__FILE__))) |
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198 |
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199 |
0 | 200 /* Boolean for tracing at a certain level */ |
205
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201 #ifdef DEBUG |
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202 #define TRACE_BOOL(_level_) ( ((_level_) <= local_debug_level + fd_g_debug_lvl) \ |
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203 || (fd_debug_one_function && !strcmp(fd_debug_one_function, __PRETTY_FUNCTION__)) \ |
205
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204 || (fd_debug_one_file && !strcmp(fd_debug_one_file, __STRIPPED_FILE__) ) ) |
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205 #else /* DEBUG */ |
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206 #define TRACE_BOOL(_level_) ((_level_) <= local_debug_level + fd_g_debug_lvl) |
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207 #endif /* DEBUG */ |
0 | 208 |
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209 |
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210 /************* |
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211 The general debug macro, each call results in two lines of debug messages (change the macro for more compact output) |
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212 *************/ |
302
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213 #ifdef DEBUG |
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214 /* In DEBUG mode, we add (a lot of) meta-information along each trace. This makes multi-threading problems easier to debug. */ |
0 | 215 #define TRACE_DEBUG(level,format,args... ) { \ |
216 if ( TRACE_BOOL(level) ) { \ | |
217 char __buf[25]; \ | |
218 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ | |
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219 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
0 | 220 "\t%s|%*s" format "\n", \ |
206 | 221 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
0 | 222 (level < FULL)?"@":" ",level, "", ## args); \ |
223 } \ | |
224 } | |
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225 #else /* DEBUG */ |
304
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226 /* Do not print thread, function, ... only the message itself in this case, unless the debug level is set > FULL. */ |
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227 #define TRACE_DEBUG(level,format,args... ) { \ |
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228 if ( TRACE_BOOL(level) ) { \ |
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229 if (fd_g_debug_lvl > FULL) { \ |
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230 char __buf[25]; \ |
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231 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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232 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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233 "\t%s|%*s" format "\n", \ |
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234 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
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235 (level < FULL)?"@":" ",level, "", ## args); \ |
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236 } else { \ |
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237 fd_log_debug(format "\n", ## args); \ |
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238 } \ |
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239 } \ |
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240 } |
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241 #endif /* DEBUG */ |
0 | 242 |
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243 /************* |
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244 Derivatives from this macro |
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245 ************/ |
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246 /* Helper for function entry -- for very detailed trace of the execution */ |
0 | 247 #define TRACE_ENTRY(_format,_args... ) \ |
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248 TRACE_DEBUG(FCTS, "[enter] %s(" _format ") {" #_args "}", __PRETTY_FUNCTION__, ##_args ); |
0 | 249 |
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250 /* Helper for debugging by adding traces -- for debuging a specific location of the code */ |
0 | 251 #define TRACE_HERE() \ |
183
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252 TRACE_DEBUG(NONE, " -- debug checkpoint %d -- ", fd_breakhere()); |
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253 int fd_breakhere(void); |
0 | 254 |
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255 /* Helper for tracing the CHECK_* macros bellow -- very very verbose code execution! */ |
0 | 256 #define TRACE_DEBUG_ALL( str ) \ |
257 TRACE_DEBUG(CALL, str ); | |
258 | |
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259 /* For development only, to keep track of TODO locations in the code */ |
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260 #ifndef ERRORS_ON_TODO |
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261 #define TODO( _msg, _args... ) \ |
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262 TRACE_DEBUG(NONE, "TODO: " _msg , ##_args); |
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263 #else /* ERRORS_ON_TODO */ |
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264 #define TODO( _msg, _args... ) \ |
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265 "TODO" = _msg ## _args; /* just a stupid compilation error to spot the todo */ |
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266 #endif /* ERRORS_ON_TODO */ |
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267 |
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268 /* Trace a binary buffer content */ |
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269 #define TRACE_DEBUG_BUFFER(level, prefix, buf, bufsz, suffix ) { \ |
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270 if ( TRACE_BOOL(level) ) { \ |
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271 char __ts[25]; \ |
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272 int __i; \ |
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273 size_t __sz = (size_t)(bufsz); \ |
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274 uint8_t * __buf = (uint8_t *)(buf); \ |
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275 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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276 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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277 "\t%s|%*s" prefix , \ |
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278 __thn, fd_log_time(NULL, __ts, sizeof(__ts)), __PRETTY_FUNCTION__, __FILE__, __LINE__, \ |
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279 (level < FULL)?"@":" ",level, ""); \ |
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280 for (__i = 0; __i < __sz; __i++) { \ |
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281 fd_log_debug("%02.2hhx", __buf[__i]); \ |
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282 } \ |
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283 fd_log_debug(suffix "\n"); \ |
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284 } \ |
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285 } |
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286 |
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287 /* Some aliases to socket addresses structures */ |
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288 #define sSS struct sockaddr_storage |
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289 #define sSA struct sockaddr |
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290 #define sSA4 struct sockaddr_in |
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291 #define sSA6 struct sockaddr_in6 |
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292 |
246
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293 /* The sockaddr length of a sSS structure */ |
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294 #define sSAlen( _sa_ ) \ |
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295 ( (socklen_t) ( (((sSA *)_sa_)->sa_family == AF_INET) ? (sizeof(sSA4)) : \ |
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296 ((((sSA *)_sa_)->sa_family == AF_INET6) ? (sizeof(sSA6)) : \ |
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297 0 ) ) ) |
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298 |
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299 /* Dump one sockaddr Node information */ |
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300 #define sSA_DUMP_NODE( sa, flag ) { \ |
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301 sSA * __sa = (sSA *)(sa); \ |
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302 char __addrbuf[INET6_ADDRSTRLEN]; \ |
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303 if (__sa) { \ |
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304 int __rc = getnameinfo(__sa, \ |
246
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305 sSAlen(__sa), \ |
226
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306 __addrbuf, \ |
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307 sizeof(__addrbuf), \ |
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308 NULL, \ |
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309 0, \ |
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310 flag); \ |
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311 if (__rc) \ |
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312 fd_log_debug("%s", (char *)gai_strerror(__rc)); \ |
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313 else \ |
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314 fd_log_debug("%s", &__addrbuf[0]); \ |
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315 } else { \ |
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316 fd_log_debug("(NULL / ANY)"); \ |
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317 } \ |
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318 } |
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319 /* Same but with the port (service) also */ |
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320 #define sSA_DUMP_NODE_SERV( sa, flag ) { \ |
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321 sSA * __sa = (sSA *)(sa); \ |
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322 char __addrbuf[INET6_ADDRSTRLEN]; \ |
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323 char __servbuf[32]; \ |
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324 if (__sa) { \ |
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325 int __rc = getnameinfo(__sa, \ |
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326 sSAlen(__sa), \ |
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327 __addrbuf, \ |
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328 sizeof(__addrbuf), \ |
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329 __servbuf, \ |
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330 sizeof(__servbuf), \ |
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331 flag); \ |
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332 if (__rc) \ |
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333 fd_log_debug("%s", (char *)gai_strerror(__rc)); \ |
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334 else \ |
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335 fd_log_debug("[%s]:%s", &__addrbuf[0],&__servbuf[0]); \ |
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336 } else { \ |
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337 fd_log_debug("(NULL / ANY)"); \ |
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338 } \ |
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339 } |
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340 |
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341 /* Inside a debug trace */ |
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342 #define TRACE_DEBUG_sSA(level, prefix, sa, flags, suffix ) { \ |
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343 if ( TRACE_BOOL(level) ) { \ |
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344 char __buf[25]; \ |
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345 char * __thn = ((char *)pthread_getspecific(fd_log_thname) ?: "unnamed"); \ |
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346 fd_log_debug("\t | tid:%-20s\t%s\tin %s@%s:%d\n" \ |
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347 "\t%s|%*s" prefix , \ |
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348 __thn, fd_log_time(NULL, __buf, sizeof(__buf)), __PRETTY_FUNCTION__, __FILE__, __LINE__,\ |
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349 (level < FULL)?"@":" ",level, ""); \ |
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350 sSA_DUMP_NODE_SERV( sa, flags ); \ |
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351 fd_log_debug(suffix "\n"); \ |
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352 } \ |
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353 } |
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354 |
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355 /* Report an error */ |
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356 #define TRACE_DEBUG_ERROR(format,args... ) \ |
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357 TRACE_DEBUG(NONE, format, ##args) |
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358 |
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359 /****************** |
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360 Optimized code: remove all debugging code |
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361 **/ |
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362 #ifdef STRIP_DEBUG_CODE |
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363 #undef TRACE_DEBUG |
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364 #undef TRACE_BOOL |
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365 #undef TRACE_DEBUG_sSA |
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366 #undef TRACE_DEBUG_BUFFER |
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367 #undef TRACE_DEBUG_ERROR |
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368 #define TRACE_DEBUG(level,format,args... ) |
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369 #define TRACE_BOOL(_level_) (0) |
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370 #define TRACE_DEBUG_BUFFER(level, prefix, buf, bufsz, suffix ) |
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371 #define TRACE_DEBUG_sSA(level, prefix, sa, flags, suffix ) |
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372 #define TRACE_DEBUG_ERROR(format,args... ) { \ |
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373 fd_log_debug(format "\n", ## args); \ |
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374 } |
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375 #endif /* STRIP_DEBUG_CODE */ |
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376 |
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377 |
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378 /*============================================================*/ |
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379 /* ERROR CHECKING MACRO */ |
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380 /*============================================================*/ |
0 | 381 |
382 /* Macros to check a return value and branch out in case of error. | |
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383 * These macro should be used only when errors are improbable, not for expected errors. |
0 | 384 */ |
385 | |
386 /* Check the return value of a system function and execute fallback in case of error */ | |
387 #define CHECK_SYS_DO( __call__, __fallback__ ) { \ | |
388 int __ret__; \ | |
389 TRACE_DEBUG_ALL( "Check SYS: " #__call__ ); \ | |
390 __ret__ = (__call__); \ | |
391 if (__ret__ < 0) { \ | |
392 int __err__ = errno; /* We may handle EINTR here */ \ | |
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393 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "' :\t%s", strerror(__err__));\ |
0 | 394 __fallback__; \ |
395 } \ | |
396 } | |
397 /* Check the return value of a system function, return error code on error */ | |
398 #define CHECK_SYS( __call__ ) { \ | |
399 int __ret__; \ | |
400 TRACE_DEBUG_ALL( "Check SYS: " #__call__ ); \ | |
401 __ret__ = (__call__); \ | |
402 if (__ret__ < 0) { \ | |
403 int __err__ = errno; /* We may handle EINTR here */ \ | |
594
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404 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "' :\t%s", strerror(__err__));\ |
0 | 405 return __err__; \ |
406 } \ | |
407 } | |
408 | |
409 /* Check the return value of a POSIX function and execute fallback in case of error or special value */ | |
410 #define CHECK_POSIX_DO2( __call__, __speval__, __fallback1__, __fallback2__ ) { \ | |
411 int __ret__; \ | |
412 TRACE_DEBUG_ALL( "Check POSIX: " #__call__ ); \ | |
413 __ret__ = (__call__); \ | |
414 if (__ret__ != 0) { \ | |
415 if (__ret__ == (__speval__)) { \ | |
416 __fallback1__; \ | |
417 } else { \ | |
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418 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__ret__)); \ |
0 | 419 __fallback2__; \ |
420 } \ | |
421 } \ | |
422 } | |
423 | |
424 /* Check the return value of a POSIX function and execute fallback in case of error */ | |
425 #define CHECK_POSIX_DO( __call__, __fallback__ ) \ | |
426 CHECK_POSIX_DO2( (__call__), 0, , __fallback__ ); | |
427 | |
428 /* Check the return value of a POSIX function and return it if error */ | |
429 #define CHECK_POSIX( __call__ ) { \ | |
430 int __v__; \ | |
431 CHECK_POSIX_DO( __v__ = (__call__), return __v__ ); \ | |
432 } | |
433 | |
434 /* Check that a memory allocator did not return NULL, otherwise log an error and execute fallback */ | |
435 #define CHECK_MALLOC_DO( __call__, __fallback__ ) { \ | |
436 void * __ret__; \ | |
437 TRACE_DEBUG_ALL( "Check MALLOC: " #__call__ ); \ | |
438 __ret__ = (void *)( __call__ ); \ | |
439 if (__ret__ == NULL) { \ | |
440 int __err__ = errno; \ | |
594
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441 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__err__)); \ |
0 | 442 __fallback__; \ |
443 } \ | |
444 } | |
445 | |
446 /* Check that a memory allocator did not return NULL, otherwise return ENOMEM */ | |
447 #define CHECK_MALLOC( __call__ ) \ | |
448 CHECK_MALLOC_DO( __call__, return ENOMEM ); | |
449 | |
450 | |
451 /* Check parameters at function entry, execute fallback on error */ | |
594
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452 #define CHECK_PARAMS_DO( __bool__, __fallback__ ) \ |
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453 TRACE_DEBUG_ALL( "Check PARAMS: " #__bool__ ); \ |
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454 if ( ! (__bool__) ) { \ |
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455 TRACE_DEBUG_ERROR("Warning: Invalid parameter received in '" #__bool__ "'"); \ |
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456 __fallback__; \ |
0 | 457 } |
458 /* Check parameters at function entry, return EINVAL if the boolean is false (similar to assert) */ | |
459 #define CHECK_PARAMS( __bool__ ) \ | |
460 CHECK_PARAMS_DO( __bool__, return EINVAL ); | |
461 | |
462 /* Check the return value of an internal function, log and propagate */ | |
463 #define CHECK_FCT_DO( __call__, __fallback__ ) { \ | |
464 int __ret__; \ | |
465 TRACE_DEBUG_ALL( "Check FCT: " #__call__ ); \ | |
466 __ret__ = (__call__); \ | |
467 if (__ret__ != 0) { \ | |
594
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468 TRACE_DEBUG_ERROR("ERROR: in '" #__call__ "':\t%s", strerror(__ret__)); \ |
0 | 469 __fallback__; \ |
470 } \ | |
471 } | |
472 /* Check the return value of a function call, return any error code */ | |
473 #define CHECK_FCT( __call__ ) { \ | |
474 int __v__; \ | |
475 CHECK_FCT_DO( __v__ = (__call__), return __v__ ); \ | |
476 } | |
477 | |
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478 |
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479 |
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480 /*============================================================*/ |
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481 /* OTHER MACROS */ |
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482 /*============================================================*/ |
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483 |
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484 |
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485 /* helper macros (pre-processor hacks to allow macro arguments) */ |
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486 #define __str( arg ) #arg |
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487 #define _stringize( arg ) __str( arg ) |
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488 #define __agr( arg1, arg2 ) arg1 ## arg2 |
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489 #define _aggregate( arg1, arg2 ) __agr( arg1, arg2 ) |
0 | 490 |
491 | |
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492 /* A l4 protocol name (TCP / SCTP) */ |
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493 #ifdef DISABLE_SCTP |
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494 #define IPPROTO_NAME( _proto ) \ |
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495 (((_proto) == IPPROTO_TCP) ? "TCP" : \ |
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496 "Unknown") |
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497 #else /* DISABLE_SCTP */ |
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498 #define IPPROTO_NAME( _proto ) \ |
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499 ( ((_proto) == IPPROTO_TCP) ? "TCP" : \ |
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500 (((_proto) == IPPROTO_SCTP) ? "SCTP" : \ |
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501 "Unknown")) |
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502 #endif /* DISABLE_SCTP */ |
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503 |
0 | 504 /* Define the value of IP loopback address */ |
505 #ifndef INADDR_LOOPBACK | |
506 #define INADDR_LOOPBACK inet_addr("127.0.0.1") | |
507 #endif /* INADDR_LOOPBACK */ | |
508 | |
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509 #ifndef INADDR_BROADCAST |
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510 #define INADDR_BROADCAST ((in_addr_t) 0xffffffff) |
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511 #endif /* INADDR_BROADCAST */ |
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512 |
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513 /* An IP equivalent to IN6_IS_ADDR_LOOPBACK */ |
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514 #ifndef IN_IS_ADDR_LOOPBACK |
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515 #define IN_IS_ADDR_LOOPBACK(a) \ |
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516 ((((long int) (a)->s_addr) & ntohl(0xff000000)) == ntohl(0x7f000000)) |
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517 #endif /* IN_IS_ADDR_LOOPBACK */ |
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518 |
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519 /* An IP equivalent to IN6_IS_ADDR_UNSPECIFIED */ |
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520 #ifndef IN_IS_ADDR_UNSPECIFIED |
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521 #define IN_IS_ADDR_UNSPECIFIED(a) \ |
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522 (((long int) (a)->s_addr) == 0x00000000) |
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523 #endif /* IN_IS_ADDR_UNSPECIFIED */ |
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524 |
0 | 525 /* create a V4MAPPED address */ |
526 #define IN6_ADDR_V4MAP( a6, a4 ) { \ | |
527 ((uint32_t *)(a6))[0] = 0; \ | |
528 ((uint32_t *)(a6))[1] = 0; \ | |
529 ((uint32_t *)(a6))[2] = htonl(0xffff); \ | |
530 ((uint32_t *)(a6))[3] = (uint32_t)(a4); \ | |
531 } | |
532 | |
533 /* Retrieve a v4 value from V4MAPPED address ( takes a s6_addr as param) */ | |
534 #define IN6_ADDR_V4UNMAP( a6 ) \ | |
535 (((in_addr_t *)(a6))[3]) | |
536 | |
537 | |
538 /* 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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539 #ifndef HAVE_NTOHLL /* Defined by the cmake step, if the ntohll symbol is defined on the system */ |
0 | 540 # if HOST_BIG_ENDIAN |
541 /* In big-endian systems, we don't have to change the values, since the order is the same as network */ | |
542 # define ntohll(x) (x) | |
543 # define htonll(x) (x) | |
544 # else /* HOST_BIG_ENDIAN */ | |
545 /* For these systems, we must reverse the bytes. Use ntohl and htonl on sub-32 blocs, and inverse these blocs. */ | |
546 # define ntohll(x) (typeof (x))( (((uint64_t)ntohl( (uint32_t)(x))) << 32 ) | ((uint64_t) ntohl( ((uint64_t)(x)) >> 32 ))) | |
547 # define htonll(x) (typeof (x))( (((uint64_t)htonl( (uint32_t)(x))) << 32 ) | ((uint64_t) htonl( ((uint64_t)(x)) >> 32 ))) | |
548 # endif /* HOST_BIG_ENDIAN */ | |
549 #endif /* HAVE_NTOHLL */ | |
550 | |
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551 /* This macro will give the next multiple of 4 for an integer (used for padding sizes of AVP). */ |
0 | 552 #define PAD4(_x) ((_x) + ( (4 - (_x)) & 3 ) ) |
553 | |
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554 /* Useful to display any value as (safe) ASCII (will garbage UTF-8 output...) */ |
0 | 555 #define ASCII(_c) ( ((_c < 32) || (_c > 127)) ? ( _c ? '?' : ' ' ) : _c ) |
556 | |
557 /* Compare timespec structures */ | |
558 #define TS_IS_INFERIOR( ts1, ts2 ) \ | |
559 ( ((ts1)->tv_sec < (ts2)->tv_sec ) \ | |
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560 || (((ts1)->tv_sec == (ts2)->tv_sec ) && ((ts1)->tv_nsec < (ts2)->tv_nsec) )) |
0 | 561 |
542
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562 /* This gives a good size for buffered reads */ |
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563 #ifndef BUFSIZ |
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564 #define BUFSIZ 96 |
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565 #endif /* BUFSIZ */ |
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566 |
0 | 567 |
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568 |
0 | 569 /*============================================================*/ |
570 /* THREADS */ | |
571 /*============================================================*/ | |
572 | |
573 /* Terminate a thread */ | |
574 static __inline__ int fd_thr_term(pthread_t * th) | |
575 { | |
576 void * th_ret = NULL; | |
577 | |
578 CHECK_PARAMS(th); | |
579 | |
580 /* Test if it was already terminated */ | |
581 if (*th == (pthread_t)NULL) | |
582 return 0; | |
583 | |
584 /* Cancel the thread if it is still running - ignore error if it was already terminated */ | |
585 (void) pthread_cancel(*th); | |
586 | |
587 /* Then join the thread */ | |
183
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588 CHECK_POSIX( pthread_join(*th, &th_ret) ); |
0 | 589 |
181
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590 if (th_ret == PTHREAD_CANCELED) { |
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591 TRACE_DEBUG(ANNOYING, "The thread %p was canceled", *th); |
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592 } else { |
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593 TRACE_DEBUG(CALL, "The thread %p returned %x", *th, th_ret); |
0 | 594 } |
595 | |
596 /* Clean the location */ | |
597 *th = (pthread_t)NULL; | |
598 | |
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599 return 0; |
0 | 600 } |
601 | |
454
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602 /* 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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603 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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604 #define fd_cpu_flush_cache() { \ |
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605 (void)pthread_mutex_lock(&fd_cpu_mtx_dummy); \ |
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606 (void)pthread_mutex_unlock(&fd_cpu_mtx_dummy); \ |
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607 } |
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608 |
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609 |
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610 /************* |
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611 Cancelation cleanup handlers for common objects |
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612 *************/ |
0 | 613 static __inline__ void fd_cleanup_mutex( void * mutex ) |
614 { | |
615 CHECK_POSIX_DO( pthread_mutex_unlock((pthread_mutex_t *)mutex), /* */); | |
616 } | |
617 | |
618 static __inline__ void fd_cleanup_rwlock( void * rwlock ) | |
619 { | |
620 CHECK_POSIX_DO( pthread_rwlock_unlock((pthread_rwlock_t *)rwlock), /* */); | |
621 } | |
622 | |
623 static __inline__ void fd_cleanup_buffer( void * buffer ) | |
624 { | |
625 free(buffer); | |
626 } | |
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627 static __inline__ void fd_cleanup_socket(void * sockptr) |
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628 { |
191
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629 if (sockptr && (*(int *)sockptr > 0)) { |
179 | 630 CHECK_SYS_DO( close(*(int *)sockptr), /* ignore */ ); |
184 | 631 *(int *)sockptr = -1; |
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632 } |
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633 } |
0 | 634 |
635 /*============================================================*/ | |
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636 /* SIGNALS */ |
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637 /*============================================================*/ |
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638 |
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639 /* Register a new callback to be called on reception of a given signal (it receives the signal as parameter) */ |
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640 /* EALREADY will be returned if there is already a callback registered on this signal */ |
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641 /* NOTE: the signal handler will be called from a new detached thread */ |
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642 int fd_sig_register(int signal, char * modname, void (*callback)(int signal)); |
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643 |
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644 /* Remove the handler for a given signal */ |
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645 int fd_sig_unregister(int signal); |
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646 |
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647 /* Dump list of handlers */ |
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648 void fd_sig_dump(int level, int indent); |
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649 |
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650 /* Name of signals */ |
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651 const char * fd_sig_abbrev(int signal); |
235
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652 |
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653 |
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654 /*============================================================*/ |
0 | 655 /* LISTS */ |
656 /*============================================================*/ | |
657 | |
658 /* The following structure represents a chained list element */ | |
659 struct fd_list { | |
660 struct fd_list *next; /* next element in the list */ | |
661 struct fd_list *prev; /* previous element in the list */ | |
662 struct fd_list *head; /* head of the list */ | |
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663 void *o; /* additional pointer, used for any purpose (ex: start of the parent object) */ |
0 | 664 }; |
665 | |
666 /* Initialize a list element */ | |
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667 #define FD_LIST_INITIALIZER( _list_name ) \ |
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668 { .next = & _list_name, .prev = & _list_name, .head = & _list_name, .o = NULL } |
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669 #define FD_LIST_INITIALIZER_O( _list_name, _obj ) \ |
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670 { .next = & _list_name, .prev = & _list_name, .head = & _list_name, .o = _obj } |
618
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671 void fd_list_init ( struct fd_list * list, void * obj ); |
0 | 672 |
673 /* Return boolean, true if the list is empty */ | |
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674 #define FD_IS_LIST_EMPTY( _list ) ((((struct fd_list *)(_list))->head == (_list)) && (((struct fd_list *)(_list))->next == (_list))) |
0 | 675 |
676 /* Insert an item in a list at known position */ | |
677 void fd_list_insert_after ( struct fd_list * ref, struct fd_list * item ); | |
678 void fd_list_insert_before ( struct fd_list * ref, struct fd_list * item ); | |
679 | |
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680 /* Move all elements from a list at the end of another */ |
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681 void fd_list_move_end(struct fd_list * ref, struct fd_list * senti); |
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682 |
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683 /* 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 | 684 int fd_list_insert_ordered( struct fd_list * head, struct fd_list * item, int (*cmp_fct)(void *, void *), void ** ref_duplicate); |
685 | |
686 /* Unlink an item from a list */ | |
687 void fd_list_unlink ( struct fd_list * item ); | |
688 | |
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689 |
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690 |
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691 /*============================================================*/ |
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692 /* HASH */ |
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693 /*============================================================*/ |
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694 |
0 | 695 /* Compute a hash value of a string (session id, diameter id, ...) */ |
696 uint32_t fd_hash ( char * string, size_t len ); | |
697 | |
698 | |
699 | |
700 /*============================================================*/ | |
701 /* DICTIONARY */ | |
702 /*============================================================*/ | |
618
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703 |
0 | 704 /* Structure that contains the complete dictionary definitions */ |
705 struct dictionary; | |
706 | |
707 /* Structure that contains a dictionary object */ | |
708 struct dict_object; | |
709 | |
710 /* Types of object in the dictionary. */ | |
711 enum dict_object_type { | |
712 DICT_VENDOR = 1, /* Vendor */ | |
713 DICT_APPLICATION, /* Diameter Application */ | |
714 DICT_TYPE, /* AVP data type */ | |
715 DICT_ENUMVAL, /* Named constant (value of an enumerated AVP type) */ | |
716 DICT_AVP, /* AVP */ | |
717 DICT_COMMAND, /* Diameter Command */ | |
718 DICT_RULE /* a Rule for AVP in command or grouped AVP */ | |
719 #define DICT_TYPE_MAX DICT_RULE | |
720 }; | |
721 | |
722 /* Initialize a dictionary */ | |
723 int fd_dict_init(struct dictionary ** dict); | |
724 /* Destroy a dictionary */ | |
725 int fd_dict_fini(struct dictionary ** dict); | |
726 | |
727 /* | |
728 * FUNCTION: fd_dict_new | |
729 * | |
730 * PARAMETERS: | |
731 * dict : Pointer to the dictionnary where the object is created | |
732 * type : What kind of object must be created | |
733 * data : pointer to the data for the object. | |
734 * type parameter is used to determine the type of data (see bellow for detail). | |
735 * parent : a reference to a parent object, if needed. | |
736 * ref : upon successful creation, reference to new object is stored here if !null. | |
737 * | |
738 * DESCRIPTION: | |
739 * Create a new object in the dictionary. | |
740 * See following object sections in this header file for more information on data and parent parameters format. | |
741 * | |
742 * RETURN VALUE: | |
743 * 0 : The object is created in the dictionary. | |
744 * EINVAL : A parameter is invalid. | |
745 * EEXIST : This object is already defined in the dictionary (with conflicting data). | |
746 * If "ref" is not NULL, it points to the existing element on return. | |
747 * (other standard errors may be returned, too, with their standard meaning. Example: | |
748 * ENOMEM : Memory allocation for the new object element failed.) | |
749 */ | |
620
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750 int fd_dict_new ( struct dictionary * dict, enum dict_object_type type, void * data, struct dict_object * parent, struct dict_object ** ref ); |
0 | 751 |
752 /* | |
753 * FUNCTION: fd_dict_search | |
754 * | |
755 * PARAMETERS: | |
756 * dict : Pointer to the dictionnary where the object is searched | |
757 * type : type of object that is being searched | |
758 * criteria : how the object must be searched. See object-related sections bellow for more information. | |
759 * what : depending on criteria, the data that must be searched. | |
760 * result : On successful return, pointer to the object is stored here. | |
761 * retval : this value is returned if the object is not found and result is not NULL. | |
762 * | |
763 * DESCRIPTION: | |
764 * Perform a search in the dictionary. | |
765 * See the object-specific sections bellow to find how to look for each objects. | |
766 * If the "result" parameter is NULL, the function is used to check if an object is in the dictionary. | |
767 * Otherwise, a reference to the object is stored in result if found. | |
768 * If result is not NULL and the object is not found, retval is returned (should be 0 or ENOENT usually) | |
769 * | |
770 * RETURN VALUE: | |
771 * 0 : The object has been found in the dictionary, or *result is NULL. | |
772 * EINVAL : A parameter is invalid. | |
773 * ENOENT : No matching object has been found, and result was NULL. | |
774 */ | |
620
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775 int fd_dict_search ( struct dictionary * dict, enum dict_object_type type, int criteria, void * what, struct dict_object ** result, int retval ); |
0 | 776 |
777 /* Special case: get the generic error command object */ | |
620
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778 int fd_dict_get_error_cmd(struct dictionary * dict, struct dict_object ** obj); |
0 | 779 |
780 /* | |
781 * FUNCTION: fd_dict_getval | |
782 * | |
783 * PARAMETERS: | |
784 * object : Pointer to a dictionary object. | |
785 * data : pointer to a structure to hold the data for the object. | |
786 * The type is the same as "data" parameter in fd_dict_new function. | |
787 * | |
788 * DESCRIPTION: | |
789 * Retrieve content of a dictionary object. | |
790 * See following object sections in this header file for more information on data and parent parameters format. | |
791 * | |
792 * RETURN VALUE: | |
793 * 0 : The content of the object has been retrieved. | |
794 * EINVAL : A parameter is invalid. | |
795 */ | |
620
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796 int fd_dict_getval ( struct dict_object * object, void * val); |
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797 int fd_dict_gettype ( struct dict_object * object, enum dict_object_type * type); |
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798 int fd_dict_getdict ( struct dict_object * object, struct dictionary ** dict); |
0 | 799 |
800 /* Debug functions */ | |
801 void fd_dict_dump_object(struct dict_object * obj); | |
802 void fd_dict_dump(struct dictionary * dict); | |
803 | |
804 /* | |
805 *************************************************************************** | |
806 * | |
807 * Vendor object | |
808 * | |
809 * These types are used to manage vendors in the dictionary | |
810 * | |
811 *************************************************************************** | |
812 */ | |
813 | |
814 /* Type to hold a Vendor ID: "SMI Network Management Private Enterprise Codes" (RFC3232) */ | |
815 typedef uint32_t vendor_id_t; | |
816 | |
817 /* Type to hold data associated to a vendor */ | |
818 struct dict_vendor_data { | |
819 vendor_id_t vendor_id; /* ID of a vendor */ | |
820 char *vendor_name; /* The name of this vendor */ | |
821 }; | |
822 | |
823 /* The criteria for searching a vendor object in the dictionary */ | |
824 enum { | |
825 VENDOR_BY_ID = 10, /* "what" points to a vendor_id_t */ | |
826 VENDOR_BY_NAME, /* "what" points to a string */ | |
827 VENDOR_OF_APPLICATION /* "what" points to a struct dict_object containing an application (see bellow) */ | |
828 }; | |
829 | |
830 /*** | |
831 * API usage : | |
832 | |
833 Note: the value of "vendor_name" is copied when the object is created, and the string may be disposed afterwards. | |
834 On the other side, when value is retrieved with dict_getval, the string is not copied and MUST NOT be freed. It will | |
835 be freed automatically along with the object itself with call to dict_fini later. | |
836 | |
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837 - fd_dict_new: |
0 | 838 The "parent" parameter is not used for vendors. |
839 Sample code to create a vendor: | |
840 { | |
841 int ret; | |
842 struct dict_object * myvendor; | |
843 struct dict_vendor_data myvendordata = { 23455, "my vendor name" }; -- just an example... | |
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844 ret = fd_dict_new ( dict, DICT_VENDOR, &myvendordata, NULL, &myvendor ); |
0 | 845 } |
846 | |
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847 - fd_dict_search: |
0 | 848 Sample codes to look for a vendor object, by its id or name: |
849 { | |
850 int ret; | |
851 struct dict_object * vendor_found; | |
852 vendor_id_t vendorid = 23455; | |
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853 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_ID, &vendorid, &vendor_found, ENOENT); |
0 | 854 - or - |
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855 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_NAME, "my vendor name", &vendor_found, ENOENT); |
0 | 856 } |
857 | |
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858 - fd_dict_getval: |
0 | 859 Sample code to retrieve the data from a vendor object: |
860 { | |
861 int ret; | |
862 struct dict_object * myvendor; | |
863 struct dict_vendor_data myvendordata; | |
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864 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_BY_NAME, "my vendor name", &myvendor, ENOENT); |
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865 ret = fd_dict_getval ( myvendor, &myvendordata ); |
0 | 866 printf("my vendor id: %d\n", myvendordata.vendor_id ); |
867 } | |
868 | |
869 */ | |
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870 |
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871 /* Special function: */ |
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872 uint32_t * fd_dict_get_vendorid_list(struct dictionary * dict); |
0 | 873 |
874 /* | |
875 *************************************************************************** | |
876 * | |
877 * Application object | |
878 * | |
879 * These types are used to manage Diameter applications in the dictionary | |
880 * | |
881 *************************************************************************** | |
882 */ | |
883 | |
884 /* Type to hold a Diameter application ID: IANA assigned value for this application. */ | |
885 typedef uint32_t application_id_t; | |
886 | |
887 /* Type to hold data associated to an application */ | |
888 struct dict_application_data { | |
889 application_id_t application_id; /* ID of the application */ | |
890 char *application_name; /* The name of this application */ | |
891 }; | |
892 | |
893 /* The criteria for searching an application object in the dictionary */ | |
894 enum { | |
895 APPLICATION_BY_ID = 20, /* "what" points to a application_id_t */ | |
896 APPLICATION_BY_NAME, /* "what" points to a string */ | |
897 APPLICATION_OF_TYPE, /* "what" points to a struct dict_object containing a type object (see bellow) */ | |
898 APPLICATION_OF_COMMAND /* "what" points to a struct dict_object containing a command (see bellow) */ | |
899 }; | |
900 | |
901 /*** | |
902 * API usage : | |
903 | |
904 The "parent" parameter of dict_new may point to a vendor object to inform of what vendor defines the application. | |
905 for standard-track applications, the "parent" parameter should be NULL. | |
906 The vendor associated to an application is retrieved with VENDOR_OF_APPLICATION search criteria on vendors. | |
907 | |
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908 - fd_dict_new: |
0 | 909 Sample code for application creation: |
910 { | |
911 int ret; | |
912 struct dict_object * vendor; | |
913 struct dict_object * appl; | |
914 struct dict_vendor_data vendor_data = { | |
915 23455, | |
916 "my vendor name" | |
917 }; | |
918 struct dict_application_data app_data = { | |
919 9789, | |
920 "my vendor's application" | |
921 }; | |
922 | |
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923 ret = fd_dict_new ( dict, DICT_VENDOR, &vendor_data, NULL, &vendor ); |
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924 ret = fd_dict_new ( dict, DICT_APPLICATION, &app_data, vendor, &appl ); |
0 | 925 } |
926 | |
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927 - fd_dict_search: |
0 | 928 Sample code to retrieve the vendor of an application |
929 { | |
930 int ret; | |
931 struct dict_object * vendor, * appli; | |
932 | |
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933 ret = fd_dict_search ( dict, DICT_APPLICATION, APPLICATION_BY_NAME, "my vendor's application", &appli, ENOENT); |
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934 ret = fd_dict_search ( dict, DICT_VENDOR, VENDOR_OF_APPLICATION, appli, &vendor, ENOENT); |
0 | 935 } |
936 | |
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937 - fd_dict_getval: |
0 | 938 Sample code to retrieve the data from an application object: |
939 { | |
940 int ret; | |
941 struct dict_object * appli; | |
942 struct dict_application_data appl_data; | |
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943 ret = fd_dict_search ( dict, DICT_APPLICATION, APPLICATION_BY_NAME, "my vendor's application", &appli, ENOENT); |
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944 ret = fd_dict_getval ( appli, &appl_data ); |
0 | 945 printf("my application id: %s\n", appl_data.application_id ); |
946 } | |
947 | |
948 */ | |
949 | |
950 /* | |
951 *************************************************************************** | |
952 * | |
953 * Type object | |
954 * | |
955 * These types are used to manage AVP data types in the dictionary | |
956 * | |
957 *************************************************************************** | |
958 */ | |
959 | |
960 /* Type to store any AVP value */ | |
961 union avp_value { | |
962 struct { | |
963 uint8_t *data; /* bytes buffer */ | |
964 size_t len; /* length of the data buffer */ | |
965 } os; /* Storage for an octet string, data is alloc'd and must be freed */ | |
966 int32_t i32; /* integer 32 */ | |
967 int64_t i64; /* integer 64 */ | |
968 uint32_t u32; /* unsigned 32 */ | |
969 uint64_t u64; /* unsigned 64 */ | |
970 float f32; /* float 32 */ | |
971 double f64; /* float 64 */ | |
972 }; | |
973 | |
974 /* These are the basic AVP types defined in RFC3588bis */ | |
975 enum dict_avp_basetype { | |
976 AVP_TYPE_GROUPED, | |
977 AVP_TYPE_OCTETSTRING, | |
978 AVP_TYPE_INTEGER32, | |
979 AVP_TYPE_INTEGER64, | |
980 AVP_TYPE_UNSIGNED32, | |
981 AVP_TYPE_UNSIGNED64, | |
982 AVP_TYPE_FLOAT32, | |
983 AVP_TYPE_FLOAT64 | |
984 #define AVP_TYPE_MAX AVP_TYPE_FLOAT64 | |
985 }; | |
986 | |
987 /* Callbacks that can be associated with a derived type to easily interpret the AVP value. */ | |
988 /* | |
989 * CALLBACK: dict_avpdata_interpret | |
990 * | |
991 * PARAMETERS: | |
992 * val : Pointer to the AVP value that must be interpreted. | |
993 * interpreted : The result of interpretation is stored here. The format and meaning depends on each type. | |
994 * | |
995 * DESCRIPTION: | |
996 * This callback can be provided with a derived type in order to facilitate the interpretation of formated data. | |
997 * For example, when an AVP of type "Address" is received, it can be used to convert the octetstring into a struct sockaddr. | |
998 * This callback is not called directly, but through the message's API msg_avp_value_interpret function. | |
999 * | |
1000 * RETURN VALUE: | |
1001 * 0 : Operation complete. | |
1002 * !0 : An error occurred, the error code is returned. | |
1003 */ | |
1004 typedef int (*dict_avpdata_interpret) (union avp_value * value, void * interpreted); | |
1005 /* | |
1006 * CALLBACK: dict_avpdata_encode | |
1007 * | |
1008 * PARAMETERS: | |
1009 * data : The formated data that must be stored in the AVP value. | |
1010 * val : Pointer to the AVP value storage area where the data must be stored. | |
1011 * | |
1012 * DESCRIPTION: | |
1013 * This callback can be provided with a derived type in order to facilitate the encoding of formated data. | |
1014 * For example, it can be used to convert a struct sockaddr in an AVP value of type Address. | |
1015 * This callback is not called directly, but through the message's API msg_avp_value_encode function. | |
1016 * If the callback is defined for an OctetString based type, the created string must be malloc'd. free will be called | |
1017 * automatically later. | |
1018 * | |
1019 * RETURN VALUE: | |
1020 * 0 : Operation complete. | |
1021 * !0 : An error occurred, the error code is returned. | |
1022 */ | |
1023 typedef int (*dict_avpdata_encode) (void * data, union avp_value * val); | |
1024 | |
1025 | |
1026 /* Type to hold data associated to a derived AVP data type */ | |
1027 struct dict_type_data { | |
1028 enum dict_avp_basetype type_base; /* How the data of such AVP must be interpreted */ | |
1029 char *type_name; /* The name of this type */ | |
1030 dict_avpdata_interpret type_interpret;/* cb to convert the AVP value in more comprehensive format (or NULL) */ | |
1031 dict_avpdata_encode type_encode; /* cb to convert formatted data into an AVP value (or NULL) */ | |
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1032 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 | 1033 }; |
1034 | |
1035 /* The criteria for searching a type object in the dictionary */ | |
1036 enum { | |
1037 TYPE_BY_NAME = 30, /* "what" points to a string */ | |
1038 TYPE_OF_ENUMVAL, /* "what" points to a struct dict_object containing an enumerated constant (DICT_ENUMVAL, see bellow). */ | |
1039 TYPE_OF_AVP /* "what" points to a struct dict_object containing an AVP object. */ | |
1040 }; | |
1041 | |
1042 | |
1043 /*** | |
1044 * API usage : | |
1045 | |
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1046 - fd_dict_new: |
0 | 1047 The "parent" parameter may point to an application object, when a type is defined by a Diameter application. |
1048 | |
1049 Sample code: | |
1050 { | |
1051 int ret; | |
1052 struct dict_object * mytype; | |
1053 struct dict_type_data mytypedata = | |
1054 { | |
1055 AVP_TYPE_OCTETSTRING, | |
1056 "Address", | |
1057 NULL, | |
1058 NULL | |
1059 }; | |
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1060 ret = fd_dict_new ( dict, DICT_TYPE, &mytypedata, NULL, &mytype ); |
0 | 1061 } |
1062 | |
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1063 - fd_dict_search: |
0 | 1064 Sample code: |
1065 { | |
1066 int ret; | |
1067 struct dict_object * address_type; | |
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1068 ret = fd_dict_search ( dict, DICT_TYPE, TYPE_BY_NAME, "Address", &address_type, ENOENT); |
0 | 1069 } |
1070 | |
1071 */ | |
1072 | |
1073 /* | |
1074 *************************************************************************** | |
1075 * | |
1076 * Enumerated values object | |
1077 * | |
1078 * These types are used to manage named constants of some AVP, | |
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1079 * for enumerated types. freeDiameter allows constants for types others than Unsigned32 |
0 | 1080 * |
1081 *************************************************************************** | |
1082 */ | |
1083 | |
1084 /* Type to hold data of named constants for AVP */ | |
1085 struct dict_enumval_data { | |
1086 char *enum_name; /* The name of this constant */ | |
1087 union avp_value enum_value; /* Value of the constant. Union term depends on parent type's base type. */ | |
1088 }; | |
1089 | |
1090 /* The criteria for searching a constant in the dictionary */ | |
1091 enum { | |
1092 ENUMVAL_BY_STRUCT = 40, /* "what" points to a struct dict_enumval_request as defined bellow */ | |
1093 }; | |
1094 | |
1095 struct dict_enumval_request { | |
1096 /* Identifier of the parent type, one of the following must not be NULL */ | |
1097 struct dict_object *type_obj; | |
1098 char *type_name; | |
1099 | |
1100 /* Search criteria for the constant */ | |
1101 struct dict_enumval_data search; /* search.enum_value is used only if search.enum_name == NULL */ | |
1102 }; | |
1103 | |
1104 /*** | |
1105 * API usage : | |
1106 | |
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1107 - fd_dict_new: |
0 | 1108 The "parent" parameter must point to a derived type object. |
1109 Sample code to create a type "Boolean" with two constants "True" and "False": | |
1110 { | |
1111 int ret; | |
1112 struct dict_object * type_boolean; | |
1113 struct dict_type_data type_boolean_data = | |
1114 { | |
1115 AVP_TYPE_INTEGER32, | |
1116 "Boolean", | |
1117 NULL, | |
1118 NULL | |
1119 }; | |
1120 struct dict_enumval_data boolean_false = | |
1121 { | |
1122 .enum_name="False", | |
1123 .enum_value.i32 = 0 | |
1124 }; | |
1125 struct dict_enumval_data boolean_true = | |
1126 { | |
1127 .enum_name="True", | |
1128 .enum_value.i32 = -1 | |
1129 }; | |
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1130 ret = fd_dict_new ( dict, DICT_TYPE, &type_boolean_data, NULL, &type_boolean ); |
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1131 ret = fd_dict_new ( dict, DICT_ENUMVAL, &boolean_false, type_boolean, NULL ); |
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1132 ret = fd_dict_new ( dict, DICT_ENUMVAL, &boolean_true , type_boolean, NULL ); |
0 | 1133 |
1134 } | |
1135 | |
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1136 - fd_dict_search: |
0 | 1137 Sample code to look for a constant name, by its value: |
1138 { | |
1139 int ret; | |
1140 struct dict_object * value_found; | |
1141 struct dict_enumval_request boolean_by_value = | |
1142 { | |
1143 .type_name = "Boolean", | |
1144 .search.enum_name=NULL, | |
1145 .search.enum_value.i32 = -1 | |
1146 }; | |
1147 | |
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1148 ret = fd_dict_search ( dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &boolean_by_value, &value_found, ENOENT); |
0 | 1149 } |
1150 | |
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1151 - fd_dict_getval: |
0 | 1152 Sample code to retrieve the data from a constant object: |
1153 { | |
1154 int ret; | |
1155 struct dict_object * value_found; | |
1156 struct dict_enumval_data boolean_data = NULL; | |
1157 struct dict_enumval_request boolean_by_value = | |
1158 { | |
1159 .type_name = "Boolean", | |
1160 .search.enum_name=NULL, | |
1161 .search.enum_value.i32 = 0 | |
1162 }; | |
1163 | |
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1164 ret = fd_dict_search ( dict, DICT_ENUMVAL, ENUMVAL_BY_STRUCT, &boolean_by_value, &value_found, ENOENT); |
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1165 ret = fd_dict_getval ( value_found, &boolean_data ); |
0 | 1166 printf(" Boolean with value 0: %s", boolean_data.enum_name ); |
1167 } | |
1168 */ | |
1169 | |
1170 /* | |
1171 *************************************************************************** | |
1172 * | |
1173 * AVP object | |
1174 * | |
1175 * These objects are used to manage AVP definitions in the dictionary | |
1176 * | |
1177 *************************************************************************** | |
1178 */ | |
1179 | |
1180 /* Type to hold an AVP code. For vendor 0, these codes are assigned by IANA. Otherwise, it is managed by the vendor */ | |
1181 typedef uint32_t avp_code_t; | |
1182 | |
1183 /* Values of AVP flags */ | |
1184 #define AVP_FLAG_VENDOR 0x80 | |
1185 #define AVP_FLAG_MANDATORY 0x40 | |
1186 #define AVP_FLAG_RESERVED3 0x20 | |
1187 #define AVP_FLAG_RESERVED4 0x10 | |
1188 #define AVP_FLAG_RESERVED5 0x08 | |
1189 #define AVP_FLAG_RESERVED6 0x04 | |
1190 #define AVP_FLAG_RESERVED7 0x02 | |
1191 #define AVP_FLAG_RESERVED8 0x01 | |
1192 | |
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1193 /* For dumping flags and values */ |
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1194 #define DUMP_AVPFL_str "%c%c" |
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1195 #define DUMP_AVPFL_val(_val) (_val & AVP_FLAG_VENDOR)?'V':'-' , (_val & AVP_FLAG_MANDATORY)?'M':'-' |
0 | 1196 |
1197 /* Type to hold data associated to an avp */ | |
1198 struct dict_avp_data { | |
1199 avp_code_t avp_code; /* Code of the avp */ | |
1200 vendor_id_t avp_vendor; /* Vendor of the AVP, or 0 */ | |
1201 char *avp_name; /* Name of this AVP */ | |
1202 uint8_t avp_flag_mask; /* Mask of fixed AVP flags */ | |
1203 uint8_t avp_flag_val; /* Values of the fixed flags */ | |
1204 enum dict_avp_basetype avp_basetype; /* Basic type of data found in the AVP */ | |
1205 }; | |
1206 | |
1207 /* The criteria for searching an avp object in the dictionary */ | |
1208 enum { | |
1209 AVP_BY_CODE = 50, /* "what" points to an avp_code_t, vendor is always 0 */ | |
1210 AVP_BY_NAME, /* "what" points to a string, vendor is always 0 */ | |
1211 AVP_BY_CODE_AND_VENDOR, /* "what" points to a struct dict_avp_request (see bellow), where avp_vendor and avp_code are set */ | |
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1212 AVP_BY_NAME_AND_VENDOR, /* "what" points to a struct dict_avp_request (see bellow), where avp_vendor and avp_name are set */ |
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1213 AVP_BY_NAME_ALL_VENDORS /* "what" points to a string. Might be quite slow... */ |
0 | 1214 }; |
1215 | |
1216 /* Struct used for some researchs */ | |
1217 struct dict_avp_request { | |
1218 vendor_id_t avp_vendor; | |
1219 avp_code_t avp_code; | |
1220 char *avp_name; | |
1221 }; | |
1222 | |
1223 | |
1224 /*** | |
1225 * API usage : | |
1226 | |
1227 If "parent" parameter is not NULL during AVP creation, it must point to a DICT_TYPE object. | |
1228 The extended type is then attached to the AVP. In case where it is an enumerated type, the value of | |
1229 AVP is automatically interpreted in debug messages, and in message checks. | |
1230 The derived type of an AVP can be retrieved with: dict_search ( DICT_TYPE, TYPE_OF_AVP, avp, ... ) | |
1231 | |
1232 To create the rules (ABNF) for children of Grouped AVP, see the DICT_RULE related part. | |
1233 | |
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1234 - fd_dict_new: |
0 | 1235 Sample code for AVP creation: |
1236 { | |
1237 int ret; | |
1238 struct dict_object * user_name_avp; | |
1239 struct dict_object * boolean_type; | |
1240 struct dict_object * sample_boolean_avp; | |
1241 struct dict_avp_data user_name_data = { | |
1242 1, // code | |
1243 0, // vendor | |
1244 "User-Name", // name | |
1245 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 | |
1246 AVP_FLAG_MANDATORY, // the V flag must be cleared, the M flag must be set. | |
1247 AVP_TYPE_OCTETSTRING // User-Name AVP contains OctetString data (further precision such as UTF8String can be given with a parent derived type) | |
1248 }; | |
1249 struct dict_avp_data sample_boolean_data = { | |
1250 31337, | |
1251 23455, | |
1252 "Sample-Boolean", | |
1253 AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, | |
1254 AVP_FLAG_VENDOR, | |
1255 AVP_TYPE_INTEGER32 // This MUST be the same as parent type's | |
1256 }; | |
1257 | |
1258 -- Create an AVP with a base type -- | |
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1259 ret = fd_dict_new ( dict, DICT_AVP, &user_name_data, NULL, &user_name_avp ); |
0 | 1260 |
1261 -- Create an AVP with a derived type -- | |
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1262 ret = fd_dict_search ( dict, DICT_TYPE, TYPE_BY_NAME, "Boolean", &boolean_type, ENOENT); |
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1263 ret = fd_dict_new ( dict, DICT_AVP, &sample_boolean_data , boolean_type, &sample_boolean_avp ); |
0 | 1264 |
1265 } | |
1266 | |
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1267 - fd_dict_search: |
0 | 1268 Sample code to look for an AVP |
1269 { | |
1270 int ret; | |
1271 struct dict_object * avp_username; | |
1272 struct dict_object * avp_sampleboolean; | |
1273 struct dict_avp_request avpvendorboolean = | |
1274 { | |
1275 .avp_vendor = 23455, | |
1276 .avp_name = "Sample-Boolean" | |
1277 }; | |
1278 | |
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1279 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME, "User-Name", &avp_username, ENOENT); |
0 | 1280 |
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1281 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME_AND_VENDOR, &avpvendorboolean, &avp_sampleboolean, ENOENT); |
0 | 1282 |
1283 } | |
1284 | |
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1285 - fd_dict_getval: |
0 | 1286 Sample code to retrieve the data from an AVP object: |
1287 { | |
1288 int ret; | |
1289 struct dict_object * avp_username; | |
1290 struct dict_avp_data user_name_data; | |
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1291 ret = fd_dict_search ( dict, DICT_AVP, AVP_BY_NAME, "User-Name", &avp_username, ENOENT); |
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1292 ret = fd_dict_getval ( avp_username, &user_name_data ); |
0 | 1293 printf("User-Name code: %d\n", user_name_data.avp_code ); |
1294 } | |
1295 | |
1296 */ | |
1297 | |
1298 /* | |
1299 *************************************************************************** | |
1300 * | |
1301 * Command object | |
1302 * | |
1303 * These types are used to manage commands objects in the dictionary | |
1304 * | |
1305 *************************************************************************** | |
1306 */ | |
1307 | |
1308 /* Type to hold a Diameter command code: IANA assigned values. 0x0-0x7fffff=standard, 0x800000-0xfffffd=vendors, 0xfffffe-0xffffff=experimental */ | |
1309 typedef uint32_t command_code_t; | |
1310 | |
1311 /* Values of command flags */ | |
1312 #define CMD_FLAG_REQUEST 0x80 | |
1313 #define CMD_FLAG_PROXIABLE 0x40 | |
1314 #define CMD_FLAG_ERROR 0x20 | |
1315 #define CMD_FLAG_RETRANSMIT 0x10 | |
1316 #define CMD_FLAG_RESERVED5 0x08 | |
1317 #define CMD_FLAG_RESERVED6 0x04 | |
1318 #define CMD_FLAG_RESERVED7 0x02 | |
1319 #define CMD_FLAG_RESERVED8 0x01 | |
1320 | |
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1321 /* For dumping flags and values */ |
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1322 #define DUMP_CMDFL_str "%c%c%c%c" |
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1323 #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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1324 |
0 | 1325 /* Type to hold data associated to a command */ |
1326 struct dict_cmd_data { | |
1327 command_code_t cmd_code; /* code of the command */ | |
1328 char *cmd_name; /* Name of the command */ | |
1329 uint8_t cmd_flag_mask; /* Mask of fixed-value flags */ | |
1330 uint8_t cmd_flag_val; /* values of the fixed flags */ | |
1331 }; | |
1332 | |
1333 /* The criteria for searching an avp object in the dictionary */ | |
1334 enum { | |
1335 CMD_BY_NAME = 60, /* "what" points to a string */ | |
1336 CMD_BY_CODE_R, /* "what" points to a command_code_t. The "Request" command is returned. */ | |
1337 CMD_BY_CODE_A, /* "what" points to a command_code_t. The "Answer" command is returned. */ | |
1338 CMD_ANSWER /* "what" points to a struct dict_object of a request command. The corresponding "Answer" command is returned. */ | |
1339 }; | |
1340 | |
1341 | |
1342 /*** | |
1343 * API usage : | |
1344 | |
1345 The "parent" parameter of dict_new may point to an application object to inform of what application defines the command. | |
1346 The application associated to a command is retrieved with APPLICATION_OF_COMMAND search criteria on applications. | |
1347 | |
1348 To create the rules for children of commands, see the DICT_RULE related part. | |
1349 | |
1350 Note that the "Request" and "Answer" commands are two independant objects. This allows to have different rules for each. | |
1351 | |
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1352 - fd_dict_new: |
0 | 1353 Sample code for command creation: |
1354 { | |
1355 int ret; | |
1356 struct dict_object * cer; | |
1357 struct dict_object * cea; | |
1358 struct dict_cmd_data ce_data = { | |
1359 257, // code | |
1360 "Capabilities-Exchange-Request", // name | |
1361 CMD_FLAG_REQUEST, // mask | |
1362 CMD_FLAG_REQUEST // value. Only the "R" flag is constrained here, set. | |
1363 }; | |
1364 | |
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1365 ret = fd_dict_new (dict, DICT_COMMAND, &ce_data, NULL, &cer ); |
0 | 1366 |
1367 ce_data.cmd_name = "Capabilities-Exchange-Answer"; | |
1368 ce_data.cmd_flag_val = 0; // Same constraint on "R" flag, but this time it must be cleared. | |
1369 | |
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1370 ret = fd_dict_new ( dict, DICT_COMMAND, &ce_data, NULL, &cea ); |
0 | 1371 } |
1372 | |
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1373 - fd_dict_search: |
0 | 1374 Sample code to look for a command |
1375 { | |
1376 int ret; | |
1377 struct dict_object * cer, * cea; | |
1378 command_code_t code = 257; | |
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1379 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &cer, ENOENT); |
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1380 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_CODE_R, &code, &cer, ENOENT); |
0 | 1381 } |
1382 | |
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1383 - fd_dict_getval: |
0 | 1384 Sample code to retrieve the data from a command object: |
1385 { | |
1386 int ret; | |
1387 struct dict_object * cer; | |
1388 struct dict_object * cea; | |
1389 struct dict_cmd_data cea_data; | |
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1390 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_BY_NAME, "Capabilities-Exchange-Request", &cer, ENOENT); |
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1391 ret = fd_dict_search ( dict, DICT_COMMAND, CMD_ANSWER, cer, &cea, ENOENT); |
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1392 ret = fd_dict_getval ( cea, &cea_data ); |
0 | 1393 printf("Answer to CER: %s\n", cea_data.cmd_name ); |
1394 } | |
1395 | |
1396 */ | |
1397 | |
1398 /* | |
1399 *************************************************************************** | |
1400 * | |
1401 * Rule object | |
1402 * | |
1403 * These objects are used to manage rules in the dictionary (ABNF implementation) | |
1404 * This is used for checking messages validity (more powerful than a DTD) | |
1405 * | |
1406 *************************************************************************** | |
1407 */ | |
1408 | |
1409 /* This defines the kind of rule that is defined */ | |
1410 enum rule_position { | |
1411 RULE_FIXED_HEAD = 1, /* The AVP must be at the head of the group. The rule_order field is used to specify the position. */ | |
1412 RULE_REQUIRED, /* The AVP must be present in the parent, but its position is not defined. */ | |
1413 RULE_OPTIONAL, /* The AVP may be present in the message. Used to specify a max number of occurences for example */ | |
1414 RULE_FIXED_TAIL /* The AVP must be at the end of the group. The rule_order field is used to specify the position. */ | |
1415 }; | |
1416 | |
1417 /* Content of a RULE object data */ | |
1418 struct dict_rule_data { | |
1419 struct dict_object *rule_avp; /* Pointer to the AVP object that is concerned by this rule */ | |
1420 enum rule_position rule_position; /* The position in which the rule_avp must appear in the parent */ | |
1421 unsigned rule_order; /* for RULE_FIXED_* rules, the place. 1,2,3.. for HEAD rules; ...,3,2,1 for TAIL rules. */ | |
1422 int rule_min; /* Minimum number of occurences. -1 means "default": 0 for optional rules, 1 for other rules */ | |
1423 int rule_max; /* Maximum number of occurences. -1 means no maximum. 0 means the AVP is forbidden. */ | |
1424 }; | |
1425 | |
1426 /* The criteria for searching a rule in the dictionary */ | |
1427 enum { | |
1428 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?" */ | |
1429 }; | |
1430 | |
1431 /* Structure for querying the dictionary about a rule */ | |
1432 struct dict_rule_request { | |
1433 struct dict_object *rule_parent; /* The grouped avp or command to which the rule apply */ | |
1434 struct dict_object *rule_avp; /* The AVP concerned by this rule */ | |
1435 }; | |
1436 | |
1437 | |
1438 /*** | |
1439 * API usage : | |
1440 | |
1441 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). | |
1442 | |
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1443 - fd_dict_new: |
0 | 1444 Sample code for rule creation. Let's create the Proxy-Info grouped AVP for example. |
1445 { | |
1446 int ret; | |
1447 struct dict_object * proxy_info_avp; | |
1448 struct dict_object * proxy_host_avp; | |
1449 struct dict_object * proxy_state_avp; | |
1450 struct dict_object * diameteridentity_type; | |
1451 struct dict_rule_data rule_data; | |
1452 struct dict_type_data di_type_data = { AVP_TYPE_OCTETSTRING, "DiameterIdentity", NULL, NULL }; | |
1453 struct dict_avp_data proxy_info_data = { 284, 0, "Proxy-Info", AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_GROUPED }; | |
1454 struct dict_avp_data proxy_host_data = { 280, 0, "Proxy-Host", AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_OCTETSTRING }; | |
1455 struct dict_avp_data proxy_state_data = { 33, 0, "Proxy-State",AVP_FLAG_VENDOR | AVP_FLAG_MANDATORY, AVP_FLAG_MANDATORY, AVP_TYPE_OCTETSTRING }; | |
1456 | |
1457 -- Create the parent AVP | |
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1458 ret = fd_dict_new ( dict, DICT_AVP, &proxy_info_data, NULL, &proxy_info_avp ); |
0 | 1459 |
1460 -- Create the first child AVP. | |
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1461 ret = fd_dict_new ( dict, DICT_TYPE, &di_type_data, NULL, &diameteridentity_type ); |
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1462 ret = fd_dict_new ( dict, DICT_AVP, &proxy_host_data, diameteridentity_type, &proxy_host_avp ); |
0 | 1463 |
1464 -- Create the other child AVP | |
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1465 ret = fd_dict_new ( dict, DICT_AVP, &proxy_state_data, NULL, &proxy_state_avp ); |
0 | 1466 |
1467 -- Now we can create the rules. Both children AVP are mandatory. | |
1468 rule_data.rule_position = RULE_REQUIRED; | |
1469 rule_data.rule_min = -1; | |
1470 rule_data.rule_max = -1; | |
1471 | |
1472 rule_data.rule_avp = proxy_host_avp; | |
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1473 ret = fd_dict_new ( dict, DICT_RULE, &rule_data, proxy_info_avp, NULL ); |
0 | 1474 |
1475 rule_data.rule_avp = proxy_state_avp; | |
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1476 ret = fd_dict_new ( dict, DICT_RULE, &rule_data, proxy_info_avp, NULL ); |
0 | 1477 } |
1478 | |
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1479 - fd_dict_search and fd_dict_getval are similar to previous examples. |
0 | 1480 |
1481 */ | |
1482 | |
1483 /* Define some hard-coded values */ | |
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1484 /* Application */ |
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1485 #define AI_RELAY 0xffffffff |
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1486 |
0 | 1487 /* Commands Codes */ |
1488 #define CC_CAPABILITIES_EXCHANGE 257 | |
1489 #define CC_RE_AUTH 258 | |
1490 #define CC_ACCOUNTING 271 | |
1491 #define CC_ABORT_SESSION 274 | |
1492 #define CC_SESSION_TERMINATION 275 | |
1493 #define CC_DEVICE_WATCHDOG 280 | |
1494 #define CC_DISCONNECT_PEER 282 | |
1495 | |
1496 /* AVPs (Vendor 0) */ | |
87 | 1497 #define AC_USER_NAME 1 |
0 | 1498 #define AC_PROXY_STATE 33 |
1499 #define AC_HOST_IP_ADDRESS 257 | |
1500 #define AC_AUTH_APPLICATION_ID 258 | |
1501 #define AC_ACCT_APPLICATION_ID 259 | |
1502 #define AC_VENDOR_SPECIFIC_APPLICATION_ID 260 | |
1503 #define AC_REDIRECT_HOST_USAGE 261 | |
1504 #define AC_REDIRECT_MAX_CACHE_TIME 262 | |
1505 #define AC_SESSION_ID 263 | |
1506 #define AC_ORIGIN_HOST 264 | |
1507 #define AC_SUPPORTED_VENDOR_ID 265 | |
1508 #define AC_VENDOR_ID 266 | |
1509 #define AC_FIRMWARE_REVISION 267 | |
1510 #define AC_RESULT_CODE 268 | |
1511 #define AC_PRODUCT_NAME 269 | |
1512 #define AC_DISCONNECT_CAUSE 273 | |
1513 #define ACV_DC_REBOOTING 0 | |
1514 #define ACV_DC_BUSY 1 | |
1515 #define ACV_DC_NOT_FRIEND 2 | |
1516 #define AC_ORIGIN_STATE_ID 278 | |
1517 #define AC_FAILED_AVP 279 | |
1518 #define AC_PROXY_HOST 280 | |
1519 #define AC_ERROR_MESSAGE 281 | |
1520 #define AC_ROUTE_RECORD 282 | |
1521 #define AC_DESTINATION_REALM 283 | |
1522 #define AC_PROXY_INFO 284 | |
1523 #define AC_REDIRECT_HOST 292 | |
1524 #define AC_DESTINATION_HOST 293 | |
1525 #define AC_ERROR_REPORTING_HOST 294 | |
1526 #define AC_ORIGIN_REALM 296 | |
1527 #define AC_INBAND_SECURITY_ID 299 | |
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1528 #define ACV_ISI_NO_INBAND_SECURITY 0 |
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1529 #define ACV_ISI_TLS 1 |
0 | 1530 |
1531 /* Error codes */ | |
1532 #define ER_DIAMETER_SUCCESS 2001 | |
1533 #define ER_DIAMETER_REALM_NOT_SERVED 3003 | |
1534 #define ER_DIAMETER_TOO_BUSY 3004 | |
1535 #define ER_DIAMETER_REDIRECT_INDICATION 3006 | |
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1536 #define ER_ELECTION_LOST 4003 |
0 | 1537 |
2
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Sebastien Decugis <sdecugis@nict.go.jp>
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1
diff
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|
1538 |
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1539 /*============================================================*/ |
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1540 /* SESSIONS */ |
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
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|
1541 /*============================================================*/ |
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
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|
1542 |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1543 /* Modules that want to associate a state with a Session-Id must first register a handler of this type */ |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1544 struct session_handler; |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1545 |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1546 /* This opaque structure represents a session associated with a Session-Id */ |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1547 struct session; |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1548 |
226
406f74f0789b
Few cosmetics changes
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
216
diff
changeset
|
1549 /* The state information that a module associate with a session -- each module defines its own data format */ |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1550 typedef void session_state; |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1551 |
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
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|
1552 /* 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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|
1553 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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|
1554 |
3
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Sebastien Decugis <sdecugis@nict.go.jp>
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2
diff
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|
1555 /* |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1556 * FUNCTION: fd_sess_handler_create |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1557 * |
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Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1558 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1559 * handler : location where the new handler must be stored. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1560 * cleanup : a callback function that must be called when the session with associated data is destroyed. |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
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|
1561 * opaque : A pointer that is passed to the cleanup callback -- the content is never examined by the framework. |
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1562 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1563 * DESCRIPTION: |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1564 * 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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|
1565 * 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
|
1566 * 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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|
1567 * |
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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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|
1568 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1569 * 0 : The new handler has been created. |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1570 * EINVAL : A parameter is invalid. |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1571 * ENOMEM : Not enough memory to complete the operation |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1572 */ |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
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|
1573 int fd_sess_handler_create_internal ( struct session_handler ** handler, void (*cleanup)(session_state * state, char * sid, void * opaque), void * opaque ); |
3
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1574 /* Macro to avoid casting everywhere */ |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
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|
1575 #define fd_sess_handler_create( _handler, _cleanup, _opaque ) \ |
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
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|
1576 fd_sess_handler_create_internal( (_handler), (void (*)(session_state *, char *, void *))(_cleanup), (void *)(_opaque) ) |
3
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1577 |
340
81821e9f6988
Fix issue on session cleanup callback parameters -- thanks Souheil for reporting.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
336
diff
changeset
|
1578 |
3
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1579 /* |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1580 * FUNCTION: fd_sess_handler_destroy |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1581 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1582 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1583 * handler : location of an handler created by fd_sess_handler_create. |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
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|
1584 * opaque : the opaque pointer registered with the callback is restored here (if ! NULL). |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1585 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1586 * DESCRIPTION: |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1587 * 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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|
1588 * 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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|
1589 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1590 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1591 * 0 : The handler was destroyed. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1592 * 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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|
1593 * ENOMEM : Not enough memory to complete the operation |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1594 */ |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
1595 int fd_sess_handler_destroy ( struct session_handler ** handler, void **opaque ); |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1596 |
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1597 |
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1598 |
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1599 /* |
3
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1600 * FUNCTION: fd_sess_new |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1601 * |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
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
changeset
|
1603 * session : The location where the session object will be created upon success. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1604 * 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
changeset
|
1605 * 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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|
1606 * optlen : if opt is \0-terminated, this can be 0. Otherwise, the length of opt. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1607 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1608 * DESCRIPTION: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1609 * 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
|
1610 * 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
|
1611 * diamId is a Diameter Identity. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1612 * 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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|
1613 * opt is an optional string that can be concatenated to the identifier. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1614 * 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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|
1615 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1616 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1617 * 0 : The session is created. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1618 * EINVAL : A parameter is invalid. |
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
2
diff
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|
1619 * EALREADY : A session with the same name already exists (returned in *session) |
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
2
diff
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|
1620 * ENOMEM : Not enough memory to complete the operation |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1621 */ |
620
bc7328e600f0
Removed the OUTPUT specification for SWIG, too complex
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
618
diff
changeset
|
1622 int fd_sess_new ( struct session ** session, char * diamId, char * opt, size_t optlen ); |
3
ef303f1078ab
Progress; added session module; testsess to be completed
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2
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|
1623 |
ef303f1078ab
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2
diff
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|
1624 /* |
ef303f1078ab
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2
diff
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|
1625 * FUNCTION: fd_sess_fromsid |
ef303f1078ab
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parents:
2
diff
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|
1626 * |
ef303f1078ab
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2
diff
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|
1627 * PARAMETERS: |
ef303f1078ab
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diff
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|
1628 * sid : pointer to a string containing a Session-Id (UTF-8). |
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
2
diff
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|
1629 * len : length of the sid string (which does not need to be '\0'-terminated) |
ef303f1078ab
Progress; added session module; testsess to be completed
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parents:
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diff
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|
1630 * session : On success, pointer to the session object created / retrieved. |
ef303f1078ab
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2
diff
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|
1631 * 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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1
diff
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|
1632 * |
3
ef303f1078ab
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2
diff
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|
1633 * DESCRIPTION: |
85
e5fcd672caff
Added new function to retrieve messages sessions easily
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
83
diff
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|
1634 * Retrieve a session object from a Session-Id string. In case no session object was previously existing with this |
3
ef303f1078ab
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2
diff
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|
1635 * id, a new object is silently created (equivalent to fd_sess_new with flag SESSION_NEW_FULL). |
ef303f1078ab
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|
1636 * |
ef303f1078ab
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diff
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|
1637 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
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2
diff
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|
1638 * 0 : The session parameter has been updated. |
ef303f1078ab
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parents:
2
diff
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|
1639 * 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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|
1640 * ENOMEM : Not enough memory to complete the operation |
ef303f1078ab
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1641 */ |
620
bc7328e600f0
Removed the OUTPUT specification for SWIG, too complex
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
618
diff
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|
1642 int fd_sess_fromsid ( char * sid, size_t len, struct session ** session, int * new); |
3
ef303f1078ab
Progress; added session module; testsess to be completed
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changeset
|
1643 |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1644 /* |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1645 * FUNCTION: fd_sess_getsid |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1646 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1647 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1648 * 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
|
1649 * 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>
parents:
1
diff
changeset
|
1650 * |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1651 * DESCRIPTION: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1652 * 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
|
1653 * 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
|
1654 * 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
|
1655 * 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
|
1656 * |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1657 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1658 * 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
|
1659 * EINVAL : A parameter is invalid. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1660 */ |
620
bc7328e600f0
Removed the OUTPUT specification for SWIG, too complex
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
618
diff
changeset
|
1661 int fd_sess_getsid ( struct session * session, char ** sid ); |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1662 |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1663 /* |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1664 * FUNCTION: fd_sess_settimeout |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1665 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1666 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1667 * 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
|
1668 * 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
|
1669 * |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1670 * DESCRIPTION: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1671 * 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
|
1672 * 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
|
1673 * 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
|
1674 * 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
|
1675 * session is cleared. |
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1676 * |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1677 * 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
|
1678 * 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
|
1679 * 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
|
1680 * |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1681 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1682 * 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
|
1683 * 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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|
1684 */ |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1685 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
|
1686 |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1687 /* |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1688 * FUNCTION: fd_sess_destroy |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1689 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1690 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1691 * 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
|
1692 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1693 * DESCRIPTION: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1694 * 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
|
1695 * 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
|
1696 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1697 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1698 * 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
|
1699 * EINVAL : A parameter is invalid. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1700 */ |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1701 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
|
1702 |
6
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1703 /* |
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1704 * 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
|
1705 * |
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1706 * PARAMETERS: |
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1707 * 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
|
1708 * |
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1709 * DESCRIPTION: |
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1710 * 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
|
1711 * |
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1712 * 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
|
1713 * 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
|
1714 * 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
|
1715 */ |
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1716 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
|
1717 |
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1718 |
3
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 |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1721 /* |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1722 * FUNCTION: fd_sess_state_store |
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1723 * |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1724 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1725 * 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
|
1726 * 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
|
1727 * 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
|
1728 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1729 * DESCRIPTION: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1730 * 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
|
1731 * 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
|
1732 * is destroyed. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1733 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1734 * RETURN VALUE: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1735 * 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
|
1736 * EINVAL : A parameter is invalid. |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1737 * 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
|
1738 * 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
|
1739 */ |
6
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
5
diff
changeset
|
1740 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
|
1741 #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
|
1742 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
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|
1743 |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
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|
1744 /* |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1745 * FUNCTION: fd_sess_state_retrieve |
2
d8ce06172629
Added a global debug level var
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
1
diff
changeset
|
1746 * |
3
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1747 * PARAMETERS: |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1748 * 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
|
1749 * 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
|
1750 * 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
|
1751 * |
ef303f1078ab
Progress; added session module; testsess to be completed
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
2
diff
changeset
|
1752 * DESCRIPTION: |
ef303f1078ab
Progress; added session module; testsess to be completed
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1753 * Retrieves a state saved by fd_sess_state_store. |
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1754 * After this function has been called, the state is no longer associated with |
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1755 * the session. A new call to fd_sess_state_store must be performed in order to |
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1756 * store again the data with the session. |
2
d8ce06172629
Added a global debug level var
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1757 * |
3
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1758 * RETURN VALUE: |
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1759 * 0 : *state is updated (NULL or points to the state if it was found). |
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1760 * EINVAL : A parameter is invalid. |
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1761 */ |
620
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1762 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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|
1763 #define fd_sess_state_retrieve( _handler, _session, _state ) \ |
6
b0d377c79d80
Progress on dispatch API spec; added fd_sess_reclaim function and test
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|
1764 fd_sess_state_retrieve_internal( (_handler), (_session), (void *)(_state) ) |
2
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1765 |
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1766 |
3
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1767 /* For debug */ |
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1768 void fd_sess_dump(int level, struct session * session); |
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1769 void fd_sess_dump_hdl(int level, struct session_handler * handler); |
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1770 |
2
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1771 /*============================================================*/ |
83
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1772 /* ROUTING */ |
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1773 /*============================================================*/ |
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1774 |
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1775 /* The following functions are helpers for the routing module. |
168
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1776 The routing data is stored in the message itself. */ |
83
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1777 |
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1778 /* Structure that contains the routing data for a message */ |
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1779 struct rt_data; |
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1780 |
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1781 /* Following functions are helpers to create the routing data of a message */ |
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1782 int fd_rtd_init(struct rt_data ** rtd); |
83
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1783 void fd_rtd_free(struct rt_data ** rtd); |
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1784 |
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1785 /* Add a peer to the candidates list */ |
168
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1786 int fd_rtd_candidate_add(struct rt_data * rtd, char * peerid, char * realm); |
83
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1787 |
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1788 /* Remove a peer from the candidates (if it is found) */ |
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1789 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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1790 |
88
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Completed routing module
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1791 /* Extract the list of valid candidates, and initialize their scores to 0 */ |
620
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1792 void fd_rtd_candidate_extract(struct rt_data * rtd, struct fd_list ** candidates, int ini_score); |
88
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1793 |
83
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1794 /* 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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1795 int fd_rtd_error_add(struct rt_data * rtd, char * sentto, uint8_t * origin, size_t originsz, uint32_t rcode); |
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1796 |
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1797 /* The extracted list items have the following structure: */ |
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1798 struct rtd_candidate { |
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1799 struct fd_list chain; /* link in the list returned by the previous fct */ |
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1800 char * diamid; /* the diameter Id of the peer */ |
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1801 char * realm; /* the diameter realm of the peer (if known) */ |
83
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1802 int score; /* the current routing score for this peer, see fd_rt_out_register definition for details */ |
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1803 }; |
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1804 |
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1805 /* Reorder the list of peers */ |
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1806 int fd_rtd_candidate_reorder(struct fd_list * candidates); |
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1807 |
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1808 /* 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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1809 /* Beware that this could lead to routing loops */ |
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1810 |
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1811 /*============================================================*/ |
0 | 1812 /* MESSAGES */ |
1813 /*============================================================*/ | |
1814 | |
1815 /* The following types are opaque */ | |
1816 struct msg; /* A message: command with children AVPs (possibly grand children) */ | |
1817 struct avp; /* AVP object */ | |
1818 | |
1819 /* Some details about chaining: | |
1820 * | |
1821 * A message is made of a header ( msg ) and 0 or more AVPs ( avp ). | |
1822 * The structure is a kind of tree, where some AVPs (grouped AVPs) can contain other AVPs. | |
1823 * Exemple: | |
1824 * msg | |
1825 * |-avp | |
1826 * |-gavp | |
1827 * | |-avp | |
1828 * | |-avp | |
1829 * | \-avp | |
1830 * |-avp | |
1831 * \-avp | |
1832 * | |
1833 */ | |
1834 | |
1835 /* The following type is used to point to either a msg or an AVP */ | |
1836 typedef void msg_or_avp; | |
1837 | |
1838 /* The Diameter protocol version */ | |
1839 #define DIAMETER_VERSION 1 | |
1840 | |
1841 /* In the two following types, some fields are marked (READONLY). | |
1842 * This means that the content of these fields will be overwritten by the daemon so modifying it is useless. | |
1843 */ | |
1844 | |
1845 /* The following structure represents the header of a message. All data is in host byte order. */ | |
1846 struct msg_hdr { | |
1847 uint8_t msg_version; /* (READONLY) Version of Diameter: must be DIAMETER_VERSION. */ | |
1848 uint32_t msg_length; /* (READONLY)(3 bytes) indicates the length of the message */ | |
1849 uint8_t msg_flags; /* Message flags: CMD_FLAG_* */ | |
1850 command_code_t msg_code; /* (3 bytes) the command-code. See dictionary-api.h for more detail */ | |
1851 application_id_t msg_appl; /* The application issuing this message */ | |
1852 uint32_t msg_hbhid; /* The Hop-by-Hop identifier of the message */ | |
1853 uint32_t msg_eteid; /* The End-to-End identifier of the message */ | |
1854 }; | |
1855 | |
1856 /* The following structure represents the visible content of an AVP. All data is in host byte order. */ | |
1857 struct avp_hdr { | |
1858 avp_code_t avp_code; /* the AVP Code */ | |
1859 uint8_t avp_flags; /* AVP_FLAG_* flags */ | |
1860 uint32_t avp_len; /* (READONLY)(Only 3 bytes are used) the length of the AVP as described in the RFC */ | |
1861 vendor_id_t avp_vendor; /* Only used if AVP_FLAG_VENDOR is present */ | |
1862 union avp_value *avp_value; /* pointer to the value of the AVP. NULL means that the value is not set / not understood. | |
1863 One should not directly change this value. Use the msg_avp_setvalue function instead. | |
1864 The content of the pointed structure can be changed directly, with this restriction: | |
1865 if the AVP is an OctetString, and you change the value of the pointer avp_value->os.data, then | |
1866 you must call free() on the previous value, and the new one must be free()-able. | |
1867 */ | |
1868 }; | |
1869 | |
1870 /* The following enum is used to browse inside message hierarchy (msg, gavp, avp) */ | |
1871 enum msg_brw_dir { | |
1872 MSG_BRW_NEXT = 1, /* Get the next element at the same level, or NULL if this is the last element. */ | |
1873 MSG_BRW_PREV, /* Get the previous element at the same level, or NULL if this is the first element. */ | |
1874 MSG_BRW_FIRST_CHILD, /* Get the first child AVP of this element, if any. */ | |
1875 MSG_BRW_LAST_CHILD, /* Get the last child AVP of this element, if any. */ | |
1876 MSG_BRW_PARENT, /* Get the parent element of this element, if any. Only the msg_t object has no parent. */ | |
1877 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. */ | |
1878 }; | |
1879 | |
1880 /* Some flags used in the functions bellow */ | |
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1881 #define AVPFL_SET_BLANK_VALUE 0x01 /* When creating an AVP, initialize its value to a blank area */ |
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1882 #define AVPFL_MAX AVPFL_SET_BLANK_VALUE /* The biggest valid flag value */ |
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1883 |
0 | 1884 #define MSGFL_ALLOC_ETEID 0x01 /* When creating a message, a new end-to-end ID is allocated and set in the message */ |
1885 #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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1886 #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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1887 #define MSGFL_MAX MSGFL_ANSW_NOSID /* The biggest valid flag value */ |
0 | 1888 |
1889 /**************************************************/ | |
1890 /* Message creation, manipulation, disposal */ | |
1891 /**************************************************/ | |
1892 /* | |
1893 * FUNCTION: fd_msg_avp_new | |
1894 * | |
1895 * PARAMETERS: | |
1896 * model : Pointer to a DICT_AVP dictionary object describing the avp to create, or NULL. | |
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1897 * flags : Flags to use in creation (AVPFL_*). |
0 | 1898 * avp : Upon success, pointer to the new avp is stored here. |
1899 * | |
1900 * DESCRIPTION: | |
1901 * Create a new AVP instance. | |
1902 * | |
1903 * RETURN VALUE: | |
1904 * 0 : The AVP is created. | |
1905 * EINVAL : A parameter is invalid. | |
1906 * (other standard errors may be returned, too, with their standard meaning. Example: | |
1907 * ENOMEM : Memory allocation for the new avp failed.) | |
1908 */ | |
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1909 int fd_msg_avp_new ( struct dict_object * model, int flags, struct avp ** avp ); |
0 | 1910 |
1911 /* | |
1912 * FUNCTION: fd_msg_new | |
1913 * | |
1914 * PARAMETERS: | |
1915 * model : Pointer to a DICT_COMMAND dictionary object describing the message to create, or NULL. | |
1916 * flags : combination of MSGFL_* flags. | |
1917 * msg : Upon success, pointer to the new message is stored here. | |
1918 * | |
1919 * DESCRIPTION: | |
1920 * Create a new empty Diameter message. | |
1921 * | |
1922 * RETURN VALUE: | |
1923 * 0 : The message is created. | |
1924 * EINVAL : A parameter is invalid. | |
1925 * (other standard errors may be returned, too, with their standard meaning. Example: | |
1926 * ENOMEM : Memory allocation for the new message failed.) | |
1927 */ | |
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1928 int fd_msg_new ( struct dict_object * model, int flags, struct msg ** msg ); |
0 | 1929 |
1930 /* | |
1931 * FUNCTION: msg_new_answer_from_req | |
1932 * | |
1933 * PARAMETERS: | |
1934 * dict : Pointer to the dictionary containing the model of the query. | |
1935 * msg : The location of the query on function call. Updated by the location of answer message on return. | |
1936 * flag : Pass MSGFL_ANSW_ERROR to indicate if the answer is an error message (will set the 'E' bit) | |
1937 * | |
1938 * DESCRIPTION: | |
1939 * This function creates the empty answer message corresponding to a request. | |
1940 * The header is set properly (R flag, ccode, appid, hbhid, eteid) | |
1941 * The Session-Id AVP is copied if present. | |
1942 * The calling code should usually call fd_msg_rescode_set function on the answer. | |
1943 * Upon return, the original query may be retrieved by calling fd_msg_answ_getq on the message. | |
1944 * | |
1945 * RETURN VALUE: | |
1946 * 0 : Operation complete. | |
1947 * !0 : an error occurred. | |
1948 */ | |
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1949 int fd_msg_new_answer_from_req ( struct dictionary * dict, struct msg ** msg, int flag ); |
0 | 1950 |
1951 /* | |
1952 * FUNCTION: fd_msg_browse | |
1953 * | |
1954 * PARAMETERS: | |
1955 * reference : Pointer to a struct msg or struct avp. | |
1956 * dir : Direction for browsing | |
1957 * found : If not NULL, updated with the element that has been found, if any, or NULL if no element was found / an error occurred. | |
1958 * 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. | |
1959 * | |
1960 * DESCRIPTION: | |
1961 * Explore the content of a message object (hierarchy). If "found" is null, only error checking is performed. | |
1962 * If "depth" is provided, it is updated as follow on successful function return: | |
1963 * - not modified for MSG_BRW_NEXT and MSG_BRW_PREV. | |
1964 * - *depth = *depth + 1 for MSG_BRW_FIRST_CHILD and MSG_BRW_LAST_CHILD. | |
1965 * - *depth = *depth - 1 for MSG_BRW_PARENT. | |
1966 * - *depth = *depth + X for MSG_BRW_WALK, with X between 1 (returned the 1st child) and -N (returned the Nth parent's next). | |
1967 * | |
1968 * RETURN VALUE: | |
1969 * 0 : found has been updated (if non NULL). | |
1970 * EINVAL : A parameter is invalid. | |
1971 * ENOENT : No element has been found where requested, and "found" was NULL (otherwise, *found is set to NULL and 0 is returned). | |
1972 */ | |
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1973 int fd_msg_browse_internal ( msg_or_avp * reference, enum msg_brw_dir dir, msg_or_avp ** found, int * depth ); |
0 | 1974 /* Macro to avoid having to cast the third parameter everywhere */ |
1975 #define fd_msg_browse( ref, dir, found, depth ) \ | |
1976 fd_msg_browse_internal( (ref), (dir), (void *)(found), (depth) ) | |
1977 | |
1978 | |
1979 /* | |
1980 * FUNCTION: fd_msg_avp_add | |
1981 * | |
1982 * PARAMETERS: | |
1983 * reference : Pointer to a valid msg or avp. | |
1984 * dir : location where the new AVP should be inserted, relative to the reference. MSG_BRW_PARENT and MSG_BRW_WALK are not valid. | |
1985 * avp : pointer to the AVP object that must be inserted. | |
1986 * | |
1987 * DESCRIPTION: | |
1988 * Adds an AVP into an object that can contain it: grouped AVP or message. | |
336
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1989 * Note that the added AVP will be freed at the same time as the object it is added to, |
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1990 * so it should not be freed after the call to this function. |
0 | 1991 * |
1992 * RETURN VALUE: | |
1993 * 0 : The AVP has been added. | |
1994 * EINVAL : A parameter is invalid. | |
1995 */ | |
1996 int fd_msg_avp_add ( msg_or_avp * reference, enum msg_brw_dir dir, struct avp *avp); | |
1997 | |
1998 /* | |
1999 * FUNCTION: fd_msg_search_avp | |
2000 * | |
2001 * PARAMETERS: | |
2002 * msg : The message structure in which to search the AVP. | |
2003 * what : The dictionary model of the AVP to search. | |
2004 * avp : location where the AVP reference is stored if found. | |
2005 * | |
2006 * DESCRIPTION: | |
2007 * Search the first top-level AVP of a given model inside a message. | |
2008 * Note: only the first instance of the AVP is returned by this function. | |
2009 * Note: only top-level AVPs are searched, not inside grouped AVPs. | |
2010 * Use msg_browse if you need more advanced research features. | |
2011 * | |
2012 * RETURN VALUE: | |
2013 * 0 : The AVP has been found. | |
2014 * EINVAL : A parameter is invalid. | |
2015 * ENOENT : No AVP has been found, and "avp" was NULL (otherwise, *avp is set to NULL and 0 returned). | |
2016 */ | |
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2017 int fd_msg_search_avp ( struct msg * msg, struct dict_object * what, struct avp ** avp ); |
0 | 2018 |
2019 /* | |
2020 * FUNCTION: fd_msg_free | |
2021 * | |
2022 * PARAMETERS: | |
2023 * object : pointer to the message or AVP object that must be unlinked and freed. | |
2024 * | |
2025 * DESCRIPTION: | |
2026 * Unlink and free a message or AVP object and its children. | |
2027 * If the object is an AVP linked into a message, the AVP is removed before being freed. | |
2028 * | |
2029 * RETURN VALUE: | |
2030 * 0 : The message has been freed. | |
2031 * EINVAL : A parameter is invalid. | |
2032 */ | |
2033 int fd_msg_free ( msg_or_avp * object ); | |
2034 | |
2035 /***************************************/ | |
2036 /* Dump functions */ | |
2037 /***************************************/ | |
2038 /* | |
2039 * FUNCTION: fd_msg_dump_* | |
2040 * | |
2041 * PARAMETERS: | |
2042 * level : the log level (INFO, FULL, ...) at which the object is dumped | |
2043 * obj : A msg or avp object. | |
2044 * | |
2045 * DESCRIPTION: | |
2046 * These functions dump the content of a message to the debug log | |
2047 * either recursively or only the object itself. | |
2048 * | |
2049 * RETURN VALUE: | |
2050 * - | |
2051 */ | |
2052 void fd_msg_dump_walk ( int level, msg_or_avp *obj ); | |
2053 void fd_msg_dump_one ( int level, msg_or_avp *obj ); | |
2054 | |
2055 | |
2056 /*********************************************/ | |
2057 /* Message metadata management functions */ | |
2058 /*********************************************/ | |
2059 /* | |
2060 * FUNCTION: fd_msg_model | |
2061 * | |
2062 * PARAMETERS: | |
2063 * reference : Pointer to a valid msg or avp. | |
2064 * model : on success, pointer to the dictionary model of this command or AVP. NULL if the model is unknown. | |
2065 * | |
2066 * DESCRIPTION: | |
2067 * Retrieve the dictionary object describing this message or avp. If the object is unknown or the fd_msg_parse_dict has not been called, | |
2068 * *model is set to NULL. | |
2069 * | |
2070 * RETURN VALUE: | |
2071 * 0 : The model has been set. | |
2072 * EINVAL : A parameter is invalid. | |
2073 */ | |
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2074 int fd_msg_model ( msg_or_avp * reference, struct dict_object ** model ); |
0 | 2075 |
2076 /* | |
2077 * FUNCTION: fd_msg_hdr | |
2078 * | |
2079 * PARAMETERS: | |
2080 * msg : Pointer to a valid message object. | |
2081 * pdata : Upon success, pointer to the msg_hdr structure of this message. The fields may be modified. | |
2082 * | |
2083 * DESCRIPTION: | |
2084 * Retrieve location of modifiable section of a message. | |
2085 * | |
2086 * RETURN VALUE: | |
2087 * 0 : The location has been written. | |
2088 * EINVAL : A parameter is invalid. | |
2089 */ | |
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2090 int fd_msg_hdr ( struct msg *msg, struct msg_hdr ** pdata ); |
0 | 2091 |
2092 /* | |
2093 * FUNCTION: fd_msg_avp_hdr | |
2094 * | |
2095 * PARAMETERS: | |
2096 * avp : Pointer to a valid avp object. | |
2097 * pdata : Upon success, pointer to the avp_hdr structure of this avp. The fields may be modified. | |
2098 * | |
2099 * DESCRIPTION: | |
2100 * Retrieve location of modifiable data of an avp. | |
2101 * | |
2102 * RETURN VALUE: | |
2103 * 0 : The location has been written. | |
2104 * EINVAL : A parameter is invalid. | |
2105 */ | |
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2106 int fd_msg_avp_hdr ( struct avp *avp, struct avp_hdr ** pdata ); |
0 | 2107 |
2108 /* | |
2109 * FUNCTION: fd_msg_answ_associate, fd_msg_answ_getq, fd_msg_answ_detach | |
2110 * | |
2111 * PARAMETERS: | |
2112 * answer : the received answer message | |
2113 * query : the corresponding query that had been sent | |
2114 * | |
2115 * DESCRIPTION: | |
2116 * fd_msg_answ_associate associates a query msg with the received answer. | |
2117 * Query is retrieved with fd_msg_answ_getq. | |
2118 * If answer message is freed, the query is also freed. | |
2119 * If the msg_answ_detach function is called, the association is removed. | |
2120 * This is meant to be called from the daemon only. | |
2121 * | |
2122 * RETURN VALUE: | |
2123 * 0 : ok | |
2124 * EINVAL: a parameter is invalid | |
2125 */ | |
2126 int fd_msg_answ_associate( struct msg * answer, struct msg * query ); | |
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2127 int fd_msg_answ_getq ( struct msg * answer, struct msg ** query ); |
0 | 2128 int fd_msg_answ_detach ( struct msg * answer ); |
2129 | |
2130 /* | |
2131 * FUNCTION: fd_msg_anscb_associate, fd_msg_anscb_get | |
2132 * | |
2133 * PARAMETERS: | |
2134 * msg : the answer message | |
2135 * anscb : the callback to associate with the message | |
2136 * data : the data to pass to the callback | |
2137 * | |
2138 * DESCRIPTION: | |
2139 * Associate or retrieve a callback with an answer message. | |
2140 * This is meant to be called from the daemon only. | |
2141 * | |
2142 * RETURN VALUE: | |
2143 * 0 : ok | |
2144 * EINVAL: a parameter is invalid | |
2145 */ | |
2146 int fd_msg_anscb_associate( struct msg * msg, void ( *anscb)(void *, struct msg **), void * data ); | |
2147 int fd_msg_anscb_get ( struct msg * msg, void (**anscb)(void *, struct msg **), void ** data ); | |
2148 | |
2149 /* | |
2150 * FUNCTION: fd_msg_rt_associate, fd_msg_rt_get | |
2151 * | |
2152 * PARAMETERS: | |
2153 * msg : the query message to be sent | |
2154 * list : the ordered list of possible next-peers | |
2155 * | |
2156 * DESCRIPTION: | |
2157 * Associate a routing list with a query, and retrieve it. | |
2158 * If the message is freed, the list is also freed. | |
2159 * | |
2160 * RETURN VALUE: | |
2161 * 0 : ok | |
2162 * EINVAL: a parameter is invalid | |
2163 */ | |
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2164 int fd_msg_rt_associate( struct msg * msg, struct rt_data ** rtd ); |
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2165 int fd_msg_rt_get ( struct msg * msg, struct rt_data ** rtd ); |
0 | 2166 |
2167 /* | |
2168 * FUNCTION: fd_msg_is_routable | |
2169 * | |
2170 * PARAMETERS: | |
2171 * msg : A msg object. | |
2172 * | |
2173 * DESCRIPTION: | |
2174 * This function returns a boolean telling if a given message is routable in the Diameter network, | |
2175 * or if it is a local link message only (ex: CER/CEA, DWR/DWA, ...). | |
2176 * | |
2177 * RETURN VALUE: | |
2178 * 0 : The message is not routable / an error occurred. | |
2179 * 1 : The message is routable. | |
2180 */ | |
2181 int fd_msg_is_routable ( struct msg * msg ); | |
2182 | |
2183 /* | |
2184 * FUNCTION: fd_msg_source_(g/s)et | |
2185 * | |
2186 * PARAMETERS: | |
2187 * msg : A msg object. | |
2188 * diamid : The diameter id of the peer from which this message was received. | |
2189 * add_rr : if true, a Route-Record AVP is added to the message with content diamid. In that case, dict must be supplied. | |
2190 * dict : a dictionary with definition of Route-Record AVP (if add_rr is true) | |
2191 * | |
2192 * DESCRIPTION: | |
2193 * Store or retrieve the diameted id of the peer from which this message was received. | |
2194 * Will be used for example by the routing module to add the Route-Record AVP in forwarded requests, | |
2195 * or to direct answers to the appropriate peer. | |
2196 * | |
2197 * RETURN VALUE: | |
2198 * 0 : Operation complete. | |
2199 * !0 : an error occurred. | |
2200 */ | |
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2201 int fd_msg_source_set( struct msg * msg, char * diamid, int add_rr, struct dictionary * dict ); |
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2202 int fd_msg_source_get( struct msg * msg, char ** diamid ); |
0 | 2203 |
2204 /* | |
2205 * FUNCTION: fd_msg_eteid_get | |
2206 * | |
2207 * PARAMETERS: | |
2208 * - | |
2209 * | |
2210 * DESCRIPTION: | |
2211 * Get a new unique end-to-end id value for the local peer. | |
2212 * | |
2213 * RETURN VALUE: | |
2214 * The new assigned value. No error code is defined. | |
2215 */ | |
2216 uint32_t fd_msg_eteid_get ( void ); | |
2217 | |
2218 | |
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2219 /* |
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2220 * FUNCTION: fd_msg_sess_get |
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2221 * |
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2222 * PARAMETERS: |
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2223 * dict : the dictionary that contains the Session-Id AVP definition |
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2224 * msg : A valid message. |
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2225 * session : Location to store the session pointer when retrieved. |
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2226 * new : Indicates if the session has been created. |
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2227 * |
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2228 * DESCRIPTION: |
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2229 * This function retrieves or creates the session object corresponding to a message. |
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2230 * If the message does not contain a Session-Id AVP, *session == NULL on return. |
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2231 * Note that the Session-Id AVP must never be modified after created in a message. |
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2232 * |
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2233 * RETURN VALUE: |
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2234 * 0 : success |
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2235 * !0 : standard error code. |
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2236 */ |
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2237 int fd_msg_sess_get(struct dictionary * dict, struct msg * msg, struct session ** session, int * new); |
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2238 |
0 | 2239 /***************************************/ |
2240 /* Manage AVP values */ | |
2241 /***************************************/ | |
2242 | |
2243 /* | |
2244 * FUNCTION: fd_msg_avp_setvalue | |
2245 * | |
2246 * PARAMETERS: | |
2247 * avp : Pointer to a valid avp object with a NULL avp_value pointer. The model must be known. | |
2248 * value : pointer to an avp_value. The content will be COPIED into the internal storage area. | |
2249 * If data type is an octetstring, the data is also copied. | |
2250 * If value is a NULL pointer, the previous data is erased and value is unset in the AVP. | |
2251 * | |
2252 * DESCRIPTION: | |
2253 * Initialize the avp_value field of an AVP header. | |
2254 * | |
2255 * RETURN VALUE: | |
2256 * 0 : The avp_value pointer has been set. | |
2257 * EINVAL : A parameter is invalid. | |
2258 */ | |
2259 int fd_msg_avp_setvalue ( struct avp *avp, union avp_value *value ); | |
2260 | |
2261 /* | |
2262 * FUNCTION: fd_msg_avp_value_encode | |
2263 * | |
2264 * PARAMETERS: | |
2265 * avp : Pointer to a valid avp object with a NULL avp_value. The model must be known. | |
2266 * data : Pointer to the data that must be encoded as AVP value and stored in the AVP. | |
2267 * This is only valid for AVPs of derived type for which type_data_encode callback is set. (ex: Address type) | |
2268 * | |
2269 * DESCRIPTION: | |
2270 * Initialize the avp_value field of an AVP object from formatted data, using the AVP's type "type_data_encode" callback. | |
2271 * | |
2272 * RETURN VALUE: | |
2273 * 0 : The avp_value has been set. | |
2274 * EINVAL : A parameter is invalid. | |
2275 * ENOTSUP : There is no appropriate callback registered with this AVP's type. | |
2276 */ | |
2277 int fd_msg_avp_value_encode ( void *data, struct avp *avp ); | |
2278 /* | |
2279 * FUNCTION: fd_msg_avp_value_interpret | |
2280 * | |
2281 * PARAMETERS: | |
2282 * avp : Pointer to a valid avp object with a non-NULL avp_value value. | |
2283 * data : Upon success, formatted interpretation of the AVP value is stored here. | |
2284 * | |
2285 * DESCRIPTION: | |
2286 * Interpret the content of an AVP of Derived type and store the result in data pointer. The structure | |
2287 * of the data pointer is dependent on the AVP type. This function calls the "type_data_interpret" callback | |
2288 * of the type. | |
2289 * | |
2290 * RETURN VALUE: | |
2291 * 0 : The avp_value has been set. | |
2292 * EINVAL : A parameter is invalid. | |
2293 * ENOTSUP : There is no appropriate callback registered with this AVP's type. | |
2294 */ | |
2295 int fd_msg_avp_value_interpret ( struct avp *avp, void *data ); | |
2296 | |
2297 | |
2298 /***************************************/ | |
2299 /* Message parsing functions */ | |
2300 /***************************************/ | |
2301 | |
2302 /* | |
2303 * FUNCTION: fd_msg_bufferize | |
2304 * | |
2305 * PARAMETERS: | |
2306 * msg : A valid msg object. All AVPs must have a value set. | |
2307 * buffer : Upon success, this points to a buffer (malloc'd) containing the message ready for network transmission (or security transformations). | |
2308 * The buffer may be freed after use. | |
2309 * len : if not NULL, the size of the buffer is written here. In any case, this size is updated in the msg header. | |
2310 * | |
2311 * DESCRIPTION: | |
2312 * Renders a message in memory as a buffer that can be sent over the network to the next peer. | |
2313 * | |
2314 * RETURN VALUE: | |
2315 * 0 : The location has been written. | |
2316 * EINVAL : The buffer does not contain a valid Diameter message. | |
2317 * ENOMEM : Unable to allocate enough memory to create the buffer object. | |
2318 */ | |
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2319 int fd_msg_bufferize ( struct msg * msg, unsigned char ** buffer, size_t * len ); |
0 | 2320 |
2321 /* | |
2322 * FUNCTION: fd_msg_parse_buffer | |
2323 * | |
2324 * PARAMETERS: | |
2325 * buffer : Pointer to a buffer containing a message received from the network. | |
2326 * buflen : the size in bytes of the buffer. | |
2327 * msg : Upon success, this points to a valid msg object. No AVP value is resolved in this object, nor grouped AVP. | |
2328 * | |
2329 * DESCRIPTION: | |
2330 * This function parses a buffer an creates a msg object to represent the structure of the message. | |
2331 * Since no dictionary lookup is performed, the values of the AVPs are not interpreted. To interpret the values, | |
2332 * the returned message object must be passed to fd_msg_parse_dict function. | |
2333 * The buffer pointer is saved inside the message and will be freed when not needed anymore. | |
2334 * | |
2335 * RETURN VALUE: | |
2336 * 0 : The location has been written. | |
2337 * ENOMEM : Unable to allocate enough memory to create the msg object. | |
2338 * EBADMSG : The buffer does not contain a valid Diameter message (or is truncated). | |
2339 * EINVAL : A parameter is invalid. | |
2340 */ | |
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2341 int fd_msg_parse_buffer ( unsigned char ** buffer, size_t buflen, struct msg ** msg ); |
0 | 2342 |
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2343 /* Parsing Error Information structure */ |
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2344 struct fd_pei { |
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2345 char * pei_errcode; /* name of the error code to use */ |
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2346 struct avp * pei_avp; /* pointer to invalid or missing AVP (to be freed) */ |
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2347 char * pei_message; /* Overwrite default message if needed */ |
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2348 int pei_protoerr; /* do we set the 'E' bit in the error message ? */ |
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2349 }; |
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2350 |
0 | 2351 /* |
2352 * FUNCTION: fd_msg_parse_dict | |
2353 * | |
2354 * PARAMETERS: | |
2355 * object : A msg or AVP object as returned by fd_msg_parse_buffer. | |
2356 * dict : the dictionary containing the objects definitions to use for resolving all AVPs. | |
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2357 * error_info : If not NULL, will contain the detail about error upon return. May be used to generate an error reply. |
0 | 2358 * |
2359 * DESCRIPTION: | |
2360 * This function looks up for the command and each children AVP definitions in the dictionary. | |
2361 * If the dictionary definition is found, avp_model is set and the value of the AVP is interpreted accordingly and: | |
2362 * - for grouped AVPs, the children AVP are created and interpreted also. | |
2363 * - for numerical AVPs, the value is converted to host byte order and saved in the avp_value field. | |
2364 * - for octetstring AVPs, the string is copied into a new buffer and its address is saved in avp_value. | |
2365 * If the dictionary definition is not found, avp_model is set to NULL and | |
2366 * the content of the AVP is saved as an octetstring in an internal structure. avp_value is NULL. | |
637
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|
2367 * As a result, after this function has been called, there is no more dependency of the msg object to the message buffer, that is freed. |
0 | 2368 * |
2369 * RETURN VALUE: | |
2370 * 0 : The message has been fully parsed as described. | |
2371 * EINVAL : The msg parameter is invalid for this operation. | |
2372 * ENOMEM : Unable to allocate enough memory to complete the operation. | |
2373 * ENOTSUP : No dictionary definition for the command or one of the mandatory AVP was found. | |
2374 */ | |
620
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Removed the OUTPUT specification for SWIG, too complex
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2375 int fd_msg_parse_dict ( msg_or_avp * object, struct dictionary * dict, struct fd_pei * error_info ); |
34
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|
2376 |
0 | 2377 /* |
2378 * FUNCTION: fd_msg_parse_rules | |
2379 * | |
2380 * PARAMETERS: | |
2381 * object : A msg or grouped avp object that must be verified. | |
2382 * dict : The dictionary containing the rules definitions. | |
34
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2383 * error_info : If not NULL, the first problem information will be saved here. |
0 | 2384 * |
2385 * DESCRIPTION: | |
2386 * Check that the children of the object do not conflict with the dictionary rules (ABNF compliance). | |
2387 * | |
2388 * RETURN VALUE: | |
2389 * 0 : The message has been fully parsed and complies to the defined rules. | |
2390 * EBADMSG : A conflict was detected, or a mandatory AVP is unknown in the dictionary. | |
2391 * EINVAL : The msg or avp object is invalid for this operation. | |
2392 * ENOMEM : Unable to allocate enough memory to complete the operation. | |
2393 */ | |
620
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|
2394 int fd_msg_parse_rules ( msg_or_avp * object, struct dictionary * dict, struct fd_pei * error_info); |
34
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|
2395 |
0 | 2396 |
2397 | |
2398 /* | |
2399 * FUNCTION: fd_msg_update_length | |
2400 * | |
2401 * PARAMETERS: | |
2402 * object : Pointer to a valid msg or avp. | |
2403 * | |
2404 * DESCRIPTION: | |
2405 * Update the length field of the object passed as parameter. | |
2406 * As a side effect, all children objects are also updated. Therefore, all avp_value fields of | |
2407 * the children AVPs must be set, or an error will occur. | |
2408 * | |
2409 * RETURN VALUE: | |
2410 * 0 : The size has been recomputed. | |
2411 * EINVAL : A parameter is invalid. | |
2412 */ | |
2413 int fd_msg_update_length ( msg_or_avp * object ); | |
2414 | |
2415 | |
7
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2416 /*============================================================*/ |
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2417 /* DISPATCH */ |
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2418 /*============================================================*/ |
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2419 |
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2420 /* Dispatch module (passing incoming messages to extensions registered callbacks) |
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2421 * is split between the library and the daemon. |
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2422 * |
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2423 * The library provides the support for associating dispatch callbacks with |
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2424 * dictionary objects. |
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2425 * |
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2426 * The daemon is responsible for calling the callbacks for a message when appropriate. |
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2427 * |
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2428 * |
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2429 * The dispatch module has two main roles: |
e5af94b04946
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2430 * - help determine if a message can be handled locally (during the routing step) |
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2431 * This decision involves only the application-id of the message. |
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2432 * - pass the message to the callback(s) that will handle it (during the dispatch step) |
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2433 * |
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2434 * The first role is handled by the daemon. |
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2435 * |
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2436 * About the second, these are the possibilities for registering a dispatch callback: |
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2437 * |
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2438 * -> For All messages. |
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2439 * This callback is called for all messages that are handled locally. This should be used only |
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2440 * for debug purpose. |
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2441 * |
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2442 * -> by AVP value (constants only). |
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2443 * This callback will be called when a message is received and contains an AVP with a specified enumerated value. |
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2444 * |
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2445 * -> by AVP. |
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2446 * This callback will be called when the received message contains a certain AVP. |
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2447 * |
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2448 * -> by command-code. |
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2449 * This callback will be called when the message is a specific command (and 'R' flag). |
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2450 * |
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2451 * -> by application. |
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2452 * This callback will be called when the message has a specific application-id. |
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2453 * |
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2454 * ( by vendor: would this be useful? it may be added later) |
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2455 */ |
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|
2456 enum disp_how { |
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2457 DISP_HOW_ANY = 1, /* Any message. This should be only used for debug. */ |
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2458 DISP_HOW_APPID, /* Any message with the specified application-id */ |
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2459 DISP_HOW_CC, /* Messages of the specified command-code (request or answer). App id may be specified. */ |
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2460 DISP_HOW_AVP, /* Messages containing a specific AVP. Command-code and App id may be specified. */ |
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2461 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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2462 }; |
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|
2463 /* |
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2464 * Several criteria may be selected at the same time, for example command-code AND application id. |
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|
2465 * |
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2466 * If several callbacks are registered for the same object, they are called in the order they were registered. |
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2467 * The order in which the callbacks are called is: |
e5af94b04946
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|
2468 * DISP_HOW_ANY |
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2469 * DISP_HOW_AVP_ENUMVAL & DISP_HOW_AVP |
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|
2470 * DISP_HOW_CC |
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2471 * DISP_HOW_APPID |
e5af94b04946
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|
2472 */ |
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|
2473 |
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|
2474 /* When a callback is registered, a "when" argument is passed in addition to the disp_how value, |
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|
2475 * to specify which values the criteria must match. */ |
e5af94b04946
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|
2476 struct disp_when { |
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|
2477 struct dict_object * app; |
e5af94b04946
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|
2478 struct dict_object * command; |
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|
2479 struct dict_object * avp; |
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2480 struct dict_object * value; |
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|
2481 }; |
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|
2482 |
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2483 /* Note that all the dictionary objects should really belong to the same dictionary! |
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2484 * |
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2485 * Here is the details on this "when" argument, depending on the disp_how value. |
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|
2486 * |
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2487 * DISP_HOW_ANY. |
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2488 * In this case, "when" must be NULL. |
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2489 * |
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2490 * DISP_HOW_APPID. |
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2491 * 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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2492 * |
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2493 * DISP_HOW_CC. |
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2494 * The "command" field must be defined and point to a dictionary object of type DICT_COMMAND. |
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2495 * 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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2496 * The other fields are ignored. |
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|
2497 * |
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2498 * DISP_HOW_AVP. |
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2499 * The "avp" field of the structure must be set and point to a dictionary object of type DICT_AVP. |
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2500 * The "app_id" field may be set to restrict the messages matching to a specific app id. |
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2501 * The "command" field may also be set to a valid DICT_COMMAND object. |
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2502 * The content of the "value" field is ignored. |
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2503 * |
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2504 * DISP_HOW_AVP_ENUMVAL. |
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2505 * 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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2506 * and points to a valid DICT_ENUMVAL object. |
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2507 * |
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2508 * Here is a sumary of the fields: ( M : must be set; m : may be set; 0 : ignored ) |
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2509 * field: app_id command avp value |
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2510 * APPID : M 0 0 0 |
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2511 * CC : m M 0 0 |
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2512 * AVP : m m M 0 |
e5af94b04946
Added dispatch module and tests
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parents:
6
diff
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|
2513 * ENUMVA: m m M M |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2514 */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2515 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2516 enum disp_action { |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2517 DISP_ACT_CONT, /* The next handler should be called, unless *msg == NULL. */ |
90
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Added the dispatch thread code
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diff
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|
2518 DISP_ACT_SEND, /* The updated message must be sent. No further callback is called. */ |
2c9444152e4b
Added the dispatch thread code
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88
diff
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|
2519 DISP_ACT_ERROR /* An error must be created and sent as a reply -- not valid for callbacks, only for fd_msg_dispatch. */ |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2520 }; |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2521 /* The callbacks that are registered have the following prototype: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2522 * int dispatch_callback( struct msg ** msg, struct avp * avp, struct session * session, enum disp_action * action ); |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2523 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2524 * CALLBACK: dispatch_callback |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2525 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2526 * PARAMETERS: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2527 * msg : the received message on function entry. may be updated to answer on return (see description) |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2528 * avp : for callbacks registered with DISP_HOW_AVP or DISP_HOW_AVP_ENUMVAL, direct link to the triggering AVP. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2529 * session : if the message contains a Session-Id AVP, the corresponding session object, NULL otherwise. |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
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638
diff
changeset
|
2530 * opaque : An opaque pointer that is registered along the session handler. |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2531 * action : upon return, this tells the daemon what to do next. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2532 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2533 * DESCRIPTION: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2534 * Called when a received message matchs the condition for which the callback was registered. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2535 * 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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|
2536 * - create an answer for a request. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2537 * - proxy a request or message, add / remove the Proxy-Info AVP, then forward the message. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2538 * - update a routing table or start a connection with a new peer, then forward the message. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2539 * - ... |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2540 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2541 * When *action == DISP_ACT_SEND on callback return, the msg pointed by *msg is passed to the routing module for sending. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2542 * When *action == DISP_ACT_CONT, the next registered callback is called. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2543 * When the last callback gives also DISP_ACT_CONT action value, a default handler is called. It's behavior is as follow: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2544 * - if the message is an answer, it is discarded. |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2545 * - if the message is a request, it is passed again to the routing stack, and marked as non-local handling. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2546 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2547 * RETURN VALUE: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2548 * 0 : The callback executed successfully and updated *action appropriately. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2549 * !0 : standard errors. In case of error, the message is discarded. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2550 */ |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2551 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2552 /* This structure represents a handler for a registered callback, allowing its de-registration */ |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2553 struct disp_hdl; |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
changeset
|
2554 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
changeset
|
2555 /* |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2556 * FUNCTION: fd_disp_register |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
changeset
|
2557 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2558 * PARAMETERS: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2559 * cb : The callback function to register (see dispatch_callback description above). |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2560 * how : How the callback must be registered. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2561 * when : Values that must match, depending on the how argument. |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
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638
diff
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|
2562 * opaque : A pointer that is passed back to the handler. The content is not interpreted by the framework. |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2563 * handle : On success, a handler to the registered callback is stored here if not NULL. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2564 * This handler can be used to unregister the cb. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2565 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2566 * DESCRIPTION: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2567 * Register a new callback to handle messages delivered locally. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2568 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2569 * RETURN VALUE: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2570 * 0 : The callback is registered. |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2571 * EINVAL : A parameter is invalid. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2572 * ENOMEM : Not enough memory to complete the operation |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2573 */ |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
2574 int fd_disp_register ( int (*cb)( struct msg **, struct avp *, struct session *, void *, enum disp_action *), |
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
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|
2575 enum disp_how how, struct disp_when * when, void * opaque, struct disp_hdl ** handle ); |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2576 |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2577 /* |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2578 * FUNCTION: fd_disp_unregister |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2579 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2580 * PARAMETERS: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
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|
2581 * handle : Location of the handle of the callback that must be unregistered. |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
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|
2582 * opaque : If not NULL, the opaque data that was registered is restored here. |
7
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2583 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2584 * DESCRIPTION: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2585 * Removes a callback previously registered by fd_disp_register. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2586 * |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2587 * RETURN VALUE: |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2588 * 0 : The callback is unregistered. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2589 * EINVAL : A parameter is invalid. |
e5af94b04946
Added dispatch module and tests
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2590 */ |
639
95a784729cac
Added new opaque pointer to fd_sess_handler_create and fd_disp_register for usability. Bumped API version number.
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
638
diff
changeset
|
2591 int fd_disp_unregister ( struct disp_hdl ** handle, void ** opaque ); |
7
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
parents:
6
diff
changeset
|
2592 |
90
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
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88
diff
changeset
|
2593 /* Destroy all handlers */ |
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
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88
diff
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|
2594 void fd_disp_unregister_all ( void ); |
2c9444152e4b
Added the dispatch thread code
Sebastien Decugis <sdecugis@nict.go.jp>
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88
diff
changeset
|
2595 |
7
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
changeset
|
2596 /* |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2597 * FUNCTION: fd_msg_dispatch |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2598 * |
e5af94b04946
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Sebastien Decugis <sdecugis@nict.go.jp>
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6
diff
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|
2599 * PARAMETERS: |
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2600 * msg : A msg object that have already been fd_msg_parse_dict. |
e5af94b04946
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6
diff
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|
2601 * session : The session corresponding to this object, if any. |
e5af94b04946
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6
diff
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|
2602 * action : Upon return, the action that must be taken on the message |
e5af94b04946
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6
diff
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|
2603 * |
e5af94b04946
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6
diff
changeset
|
2604 * DESCRIPTION: |
e5af94b04946
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6
diff
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|
2605 * Call all handlers registered for a given message. |
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2606 * The session must have already been resolved on entry. |
e5af94b04946
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6
diff
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|
2607 * The msg pointed may be updated during this process. |
e5af94b04946
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6
diff
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|
2608 * Upon return, the action parameter points to what must be done next. |
e5af94b04946
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6
diff
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|
2609 * |
e5af94b04946
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6
diff
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|
2610 * RETURN VALUE: |
e5af94b04946
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6
diff
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|
2611 * 0 : Success. |
e5af94b04946
Added dispatch module and tests
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6
diff
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|
2612 * EINVAL : A parameter is invalid. |
e5af94b04946
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6
diff
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|
2613 * (other errors) |
e5af94b04946
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6
diff
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|
2614 */ |
90
2c9444152e4b
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88
diff
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|
2615 int fd_msg_dispatch ( struct msg ** msg, struct session * session, enum disp_action *action, const char ** error_code ); |
7
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6
diff
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|
2616 |
e5af94b04946
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diff
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|
2617 |
0 | 2618 |
2619 /*============================================================*/ | |
8
3e143f047f78
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|
2620 /* QUEUES */ |
0 | 2621 /*============================================================*/ |
2622 | |
8
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diff
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|
2623 /* Management of FIFO queues of elements */ |
0 | 2624 |
8
3e143f047f78
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diff
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|
2625 /* A queue is an opaque object */ |
3e143f047f78
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7
diff
changeset
|
2626 struct fifo; |
0 | 2627 |
2628 /* | |
8
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7
diff
changeset
|
2629 * FUNCTION: fd_fifo_new |
0 | 2630 * |
2631 * PARAMETERS: | |
8
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diff
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|
2632 * queue : Upon success, a pointer to the new queue is saved here. |
0 | 2633 * |
2634 * DESCRIPTION: | |
8
3e143f047f78
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7
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|
2635 * Create a new empty queue. |
0 | 2636 * |
2637 * RETURN VALUE : | |
8
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2638 * 0 : The queue has been initialized successfully. |
0 | 2639 * EINVAL : The parameter is invalid. |
2640 * ENOMEM : Not enough memory to complete the creation. | |
2641 */ | |
620
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2642 int fd_fifo_new ( struct fifo ** queue ); |
0 | 2643 |
2644 /* | |
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2645 * FUNCTION: fd_fifo_del |
0 | 2646 * |
2647 * PARAMETERS: | |
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2648 * queue : Pointer to an empty queue to delete. |
0 | 2649 * |
2650 * DESCRIPTION: | |
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2651 * Destroys a queue. This is only possible if no thread is waiting for an element, |
0 | 2652 * and the queue is empty. |
2653 * | |
2654 * RETURN VALUE: | |
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2655 * 0 : The queue has been destroyed successfully. |
0 | 2656 * EINVAL : The parameter is invalid. |
2657 */ | |
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2658 int fd_fifo_del ( struct fifo ** queue ); |
0 | 2659 |
2660 /* | |
25
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2661 * FUNCTION: fd_fifo_move |
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2662 * |
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2663 * PARAMETERS: |
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2664 * old : Location of a FIFO that is to be emptied. |
25
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2665 * new : A FIFO that will receive the old data. |
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2666 * loc_update : if non NULL, a place to store the pointer to new FIFO atomically with the move. |
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2667 * |
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2668 * DESCRIPTION: |
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2669 * Empties a queue and move its content to another one atomically. |
25
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2670 * |
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2671 * RETURN VALUE: |
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2672 * 0 : The queue has been destroyed successfully. |
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2673 * EINVAL : A parameter is invalid. |
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2674 */ |
43
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2675 int fd_fifo_move ( struct fifo * old, struct fifo * new, struct fifo ** loc_update ); |
25
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2676 |
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2677 /* |
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2678 * FUNCTION: fd_fifo_length |
0 | 2679 * |
2680 * PARAMETERS: | |
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2681 * queue : The queue from which to retrieve the number of elements. |
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2682 * length : Upon success, the current number of elements in the queue is stored here. |
0 | 2683 * |
2684 * DESCRIPTION: | |
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2685 * Retrieve the number of elements in a queue. |
0 | 2686 * |
2687 * RETURN VALUE: | |
2688 * 0 : The length of the queue has been written. | |
2689 * EINVAL : A parameter is invalid. | |
2690 */ | |
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2691 int fd_fifo_length ( struct fifo * queue, int * length ); |
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2692 int fd_fifo_length_noerr ( struct fifo * queue ); /* no error checking version */ |
0 | 2693 |
2694 /* | |
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2695 * FUNCTION: fd_fifo_setthrhd |
0 | 2696 * |
2697 * PARAMETERS: | |
2698 * queue : The queue for which the thresholds are being set. | |
2699 * data : An opaque pointer that is passed to h_cb and l_cb callbacks. | |
2700 * high : The high-level threshold. If the number of elements in the queue increase to this value, h_cb is called. | |
2701 * h_cb : if not NULL, a callback to call when the queue lengh is bigger than "high". | |
2702 * low : The low-level threshold. Must be < high. | |
2703 * l_cb : If the number of elements decrease to low, this callback is called. | |
2704 * | |
2705 * DESCRIPTION: | |
2706 * This function allows to adjust the number of producer / consumer threads of a queue. | |
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2707 * If the consumer are slower than the producers, the number of elements in the queue increase. |
0 | 2708 * By setting a "high" value, we allow a callback to be called when this number is too high. |
2709 * The typical use would be to create an additional consumer thread in this callback. | |
2710 * 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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2711 * (the callback itself should implement a limit on the number of consumers that can be created) |
0 | 2712 * 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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2713 * 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 | 2714 * and so on. |
2715 * | |
2716 * Since there is no destructor for the data pointer, if cleanup operations are required, they should be performed in | |
2717 * l_cb when the length of the queue is becoming < low. | |
2718 * | |
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2719 * Note that the callbacks are called synchronously, during fd_fifo_post or fd_fifo_get. Their operation should be quick. |
0 | 2720 * |
2721 * RETURN VALUE: | |
2722 * 0 : The thresholds have been set | |
2723 * EINVAL : A parameter is invalid. | |
2724 */ | |
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2725 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 | 2726 |
2727 /* | |
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2728 * FUNCTION: fd_fifo_post |
0 | 2729 * |
2730 * PARAMETERS: | |
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2731 * queue : The queue in which the element must be posted. |
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2732 * item : The element that is put in the queue. |
0 | 2733 * |
2734 * DESCRIPTION: | |
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2735 * An element is added in a queue. Elements are retrieved from the queue in FIFO order |
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2736 * with the fd_fifo_get, fd_fifo_tryget, or fd_fifo_timedget functions. |
0 | 2737 * |
2738 * RETURN VALUE: | |
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2739 * 0 : The element is queued. |
0 | 2740 * EINVAL : A parameter is invalid. |
2741 * ENOMEM : Not enough memory to complete the operation. | |
2742 */ | |
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2743 int fd_fifo_post_int ( struct fifo * queue, void ** item ); |
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2744 #define fd_fifo_post(queue, item) \ |
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2745 fd_fifo_post_int((queue), (void *)(item)) |
0 | 2746 |
2747 /* | |
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2748 * FUNCTION: fd_fifo_get |
0 | 2749 * |
2750 * PARAMETERS: | |
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2751 * queue : The queue from which the first element must be retrieved. |
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2752 * item : On return, the first element of the queue is stored here. |
0 | 2753 * |
2754 * DESCRIPTION: | |
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2755 * This function retrieves the first element from a queue. If the queue is empty, the function will block the |
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2756 * thread until a new element is posted to the queue, or until the thread is canceled (in which case the |
0 | 2757 * function does not return). |
2758 * | |
2759 * RETURN VALUE: | |
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2760 * 0 : A new element has been retrieved. |
0 | 2761 * EINVAL : A parameter is invalid. |
2762 */ | |
620
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2763 int fd_fifo_get_int ( struct fifo * queue, void ** item ); |
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2764 #define fd_fifo_get(queue, item) \ |
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2765 fd_fifo_get_int((queue), (void *)(item)) |
0 | 2766 |
2767 /* | |
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2768 * FUNCTION: fd_fifo_tryget |
0 | 2769 * |
2770 * PARAMETERS: | |
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2771 * queue : The queue from which the element must be retrieved. |
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2772 * item : On return, the first element of the queue is stored here. |
0 | 2773 * |
2774 * DESCRIPTION: | |
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2775 * This function is similar to fd_fifo_get, except that it will not block if |
0 | 2776 * the queue is empty, but return EWOULDBLOCK instead. |
2777 * | |
2778 * RETURN VALUE: | |
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2779 * 0 : A new element has been retrieved. |
0 | 2780 * EINVAL : A parameter is invalid. |
2781 * EWOULDBLOCK : The queue was empty. | |
2782 */ | |
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2783 int fd_fifo_tryget_int ( struct fifo * queue, void ** item ); |
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2784 #define fd_fifo_tryget(queue, item) \ |
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2785 fd_fifo_tryget_int((queue), (void *)(item)) |
0 | 2786 |
2787 /* | |
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2788 * FUNCTION: fd_fifo_timedget |
0 | 2789 * |
2790 * PARAMETERS: | |
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2791 * queue : The queue from which the element must be retrieved. |
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2792 * item : On return, the element is stored here. |
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2793 * abstime : the absolute time until which we allow waiting for an item. |
0 | 2794 * |
2795 * DESCRIPTION: | |
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2796 * This function is similar to fd_fifo_get, except that it will block if the queue is empty |
0 | 2797 * only until the absolute time abstime (see pthread_cond_timedwait for + info). |
2798 * If the queue is still empty when the time expires, the function returns ETIMEDOUT | |
2799 * | |
2800 * RETURN VALUE: | |
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2801 * 0 : A new item has been retrieved. |
0 | 2802 * EINVAL : A parameter is invalid. |
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2803 * ETIMEDOUT : The time out has passed and no item has been received. |
0 | 2804 */ |
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2805 int fd_fifo_timedget_int ( struct fifo * queue, void ** item, const struct timespec *abstime ); |
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2806 #define fd_fifo_timedget(queue, item, abstime) \ |
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2807 fd_fifo_timedget_int((queue), (void *)(item), (abstime)) |
0 | 2808 |
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2809 /* Dump a fifo list and optionally its inner elements -- beware of deadlocks! */ |
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2810 void fd_fifo_dump(int level, char * name, struct fifo * queue, void (*dump_item)(int level, void * item)); |
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2811 |
0 | 2812 #endif /* _LIBFREEDIAMETER_H */ |