Mercurial > hg > freeDiameter

annotate libfdcore/core.c @ 706:4ffbc9f1e922

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Large UNTESTED commit with the following changes: * Improved DiameterIdentity handling (esp. interationalization issues), and improve efficiency of some string operations in peers, sessions, and dictionary modules (closes #7) * Cleanup in the session module to free only unreferenced sessions (#16) * Removed fd_cpu_flush_cache(), replaced by more robust alternatives. * Improved peer state machine algorithm to counter SCTP multistream race condition.
author Sebastien Decugis <sdecugis@nict.go.jp>
date Wed, 09 Feb 2011 15:26:58 +0900
parents 16c373df0947
children 4a9f08d6b6ba
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
658
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1 /*********************************************************************************************************
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2 * Software License Agreement (BSD License) *
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3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> *
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4 * *
662
2e94ef0515d7 Updated copyright information
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5 * Copyright (c) 2011, WIDE Project and NICT *
658
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6 * All rights reserved. *
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7 * *
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8 * Redistribution and use of this software in source and binary forms, with or without modification, are *
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9 * permitted provided that the following conditions are met: *
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10 * *
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11 * * Redistributions of source code must retain the above *
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12 * copyright notice, this list of conditions and the *
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13 * following disclaimer. *
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14 * *
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15 * * Redistributions in binary form must reproduce the above *
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16 * copyright notice, this list of conditions and the *
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17 * following disclaimer in the documentation and/or other *
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18 * materials provided with the distribution. *
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19 * *
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20 * * Neither the name of the WIDE Project or NICT nor the *
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21 * names of its contributors may be used to endorse or *
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22 * promote products derived from this software without *
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23 * specific prior written permission of WIDE Project and *
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24 * NICT. *
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25 * *
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26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
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27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
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28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
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29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
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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 OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
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33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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34 *********************************************************************************************************/
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35
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36 #include "fdcore-internal.h"
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37
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38 #include <gcrypt.h>
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39
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40 /* The static configuration structure */
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41 static struct fd_config g_conf;
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42 struct fd_config * fd_g_config = NULL;
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43
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44 /* gcrypt functions to support posix threads */
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45 GCRY_THREAD_OPTION_PTHREAD_IMPL;
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46
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47 /* Signal extensions when the framework is completly initialized (they are waiting in fd_core_waitstartcomplete()) */
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48 static int is_ready = 0;
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49 static pthread_mutex_t is_ready_mtx = PTHREAD_MUTEX_INITIALIZER;
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50 static pthread_cond_t is_ready_cnd = PTHREAD_COND_INITIALIZER;
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51
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52 static int signal_framework_ready(void)
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53 {
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54 TRACE_ENTRY("");
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55 CHECK_POSIX( pthread_mutex_lock( &is_ready_mtx ) );
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56 is_ready = 1;
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57 CHECK_POSIX( pthread_cond_broadcast( &is_ready_cnd ) );
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58 CHECK_POSIX( pthread_mutex_unlock( &is_ready_mtx ) );
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59 return 0;
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60 }
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61
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62 /* Thread that process incoming events on the main queue -- and terminates the framework when requested */
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63 static pthread_t core_runner = (pthread_t)NULL;
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64
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65 /* How the thread is terminated */
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66 enum core_mode {
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67 CORE_MODE_EVENTS,
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68 CORE_MODE_IMMEDIATE
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69 };
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70
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71 static void * core_runner_thread(void * arg)
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72 {
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73 if (arg && (*(int *)arg == CORE_MODE_IMMEDIATE))
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74 goto end;
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75
693
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76 fd_log_threadname("fD Core Runner");
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77
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78 /* Handle events incoming on the main event queue */
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79 while (1) {
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80 int code; size_t sz; void * data;
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81 CHECK_FCT_DO( fd_event_get(fd_g_config->cnf_main_ev, &code, &sz, &data), break );
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82 switch (code) {
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83 case FDEV_DUMP_DICT:
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84 fd_dict_dump(fd_g_config->cnf_dict);
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85 break;
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86
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87 case FDEV_DUMP_EXT:
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88 fd_ext_dump();
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89 break;
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90
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91 case FDEV_DUMP_SERV:
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92 fd_servers_dump();
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93 break;
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94
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95 case FDEV_DUMP_QUEUES:
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96 fd_fifo_dump(0, "Incoming messages", fd_g_incoming, fd_msg_dump_walk);
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97 fd_fifo_dump(0, "Outgoing messages", fd_g_outgoing, fd_msg_dump_walk);
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98 fd_fifo_dump(0, "Local messages", fd_g_local, fd_msg_dump_walk);
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99 break;
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100
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101 case FDEV_DUMP_CONFIG:
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102 fd_conf_dump();
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103 break;
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104
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105 case FDEV_DUMP_PEERS:
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106 fd_peer_dump_list(FULL);
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107 break;
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108
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109 case FDEV_TRIGGER:
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110 {
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111 int tv, *p;
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112 CHECK_PARAMS_DO( sz == sizeof(int),
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113 {
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114 TRACE_DEBUG(NONE, "Internal error: got FDEV_TRIGGER without trigger value!");
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115 ASSERT(0);
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116 goto end;
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117 } );
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118 p = data;
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119 tv = *p;
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120 free(p);
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121 CHECK_FCT_DO( fd_event_trig_call_cb(tv), goto end );
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122 }
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123 break;
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124
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125 case FDEV_TERMINATE:
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126 goto end;
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127
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128 default:
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129 TRACE_DEBUG(INFO, "Unexpected event in the main event queue (%d), ignored.\n", code);
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130 }
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131 }
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132
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133 end:
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134 TRACE_DEBUG(INFO, FD_PROJECT_BINARY " framework is stopping...");
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135 fd_log_threadname("fD Core Shutdown");
658
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136
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137 /* cleanups */
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138 CHECK_FCT_DO( fd_servers_stop(), /* Stop accepting new connections */ );
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139 CHECK_FCT_DO( fd_rtdisp_cleanstop(), /* Stop dispatch thread(s) after a clean loop if possible */ );
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140 CHECK_FCT_DO( fd_peer_fini(), /* Stop all connections */ );
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141 CHECK_FCT_DO( fd_rtdisp_fini(), /* Stop routing threads and destroy routing queues */ );
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142
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143 CHECK_FCT_DO( fd_ext_term(), /* Cleanup all extensions */ );
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144 CHECK_FCT_DO( fd_rtdisp_cleanup(), /* destroy remaining handlers */ );
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145
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146 GNUTLS_TRACE( gnutls_global_deinit() );
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147
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148 CHECK_FCT_DO( fd_conf_deinit(), );
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149
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150 CHECK_FCT_DO( fd_event_trig_fini(), );
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151
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152 fd_log_debug(FD_PROJECT_BINARY " framework is terminated.\n");
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153
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154 fd_libproto_fini();
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155
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156 return NULL;
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157 }
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158
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159 /*********************************/
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160 /* Public interfaces */
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161
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162 /* Return a string describing the version of the library */
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163 const char *fd_core_version(void)
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164 {
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165 return _stringize(FD_PROJECT_VERSION_MAJOR) "." _stringize(FD_PROJECT_VERSION_MINOR) "." _stringize(FD_PROJECT_VERSION_REV);
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166 }
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167
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168 /* Initialize the libfdcore internals. This also initializes libfdproto */
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169 int fd_core_initialize(void)
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170 {
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171 int ret;
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172
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173 /* Initialize the library -- must come first since it initializes the debug facility */
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174 ret = fd_libproto_init();
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175 if (ret != 0) {
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176 fprintf(stderr, "Unable to initialize libfdproto: %s\n", strerror(ret));
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177 return ret;
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178 }
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179
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180 TRACE_DEBUG(INFO, "libfdproto initialized.");
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181
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182 /* Name this thread */
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183 fd_log_threadname("Main");
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184
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185 /* Initialize gcrypt and gnutls */
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186 GNUTLS_TRACE( (void) gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread) );
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187 GNUTLS_TRACE( (void) gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0) );
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188 CHECK_GNUTLS_DO( gnutls_global_init(), return EINVAL );
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189 if ( ! gnutls_check_version(GNUTLS_VERSION) ) {
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190 fprintf(stderr, "The GNUTLS library is too old; found '%s', need '" GNUTLS_VERSION "'\n", gnutls_check_version(NULL));
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191 return EINVAL;
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192 } else {
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193 TRACE_DEBUG(INFO, "libgnutls '%s', libgcrypt '%s', initialized.", gnutls_check_version(NULL), gcry_check_version(NULL) );
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194 }
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195
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196 /* Initialize the config with default values */
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197 memset(&g_conf, 0, sizeof(struct fd_config));
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198 fd_g_config = &g_conf;
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199 CHECK_FCT( fd_conf_init() );
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200
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201 /* Initialize the message logging facility */
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202 fd_msg_log_init(fd_g_config->cnf_dict);
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203
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204 /* Add definitions of the base protocol */
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205 CHECK_FCT( fd_dict_base_protocol(fd_g_config->cnf_dict) );
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206
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207 /* Initialize some modules */
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208 CHECK_FCT( fd_queues_init() );
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209 CHECK_FCT( fd_msg_init() );
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210 CHECK_FCT( fd_sess_start() );
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211 CHECK_FCT( fd_p_expi_init() );
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212
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213 /* Next thing is to parse the config, leave this for a different function */
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214 return 0;
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215 }
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216
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217 /* Parse the freeDiameter.conf configuration file, load the extensions */
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218 int fd_core_parseconf(char * conffile)
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219 {
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220 TRACE_ENTRY("%p", conffile);
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221
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222 /* Conf file */
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223 if (conffile)
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224 fd_g_config->cnf_file = conffile; /* otherwise, we use the default name */
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225
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226 CHECK_FCT( fd_conf_parse() );
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227
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228 /* The following module use data from the configuration */
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229 CHECK_FCT( fd_rtdisp_init() );
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230
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231 /* Now, load all dynamic extensions */
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232 CHECK_FCT( fd_ext_load() );
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233
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234 /* Display configuration */
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235 fd_conf_dump();
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236
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237 /* Display registered triggers for FDEV_TRIGGER */
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238 fd_event_trig_dump();
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239
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240 return 0;
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241 }
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242
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243 /* For threads that would need to wait complete start of the framework (ex: in extensions) */
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244 int fd_core_waitstartcomplete(void)
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245 {
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246 int ret = 0;
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247
658
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248 TRACE_ENTRY("");
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249
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250 CHECK_POSIX( pthread_mutex_lock( &is_ready_mtx ) );
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251 pthread_cleanup_push( fd_cleanup_mutex, &is_ready_mtx );
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252
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253 while (!ret && !is_ready) {
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254 CHECK_POSIX_DO( ret = pthread_cond_wait( &is_ready_cnd, &is_ready_mtx ), );
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255 }
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256
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257 pthread_cleanup_pop( 0 );
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258 CHECK_POSIX( pthread_mutex_unlock( &is_ready_mtx ) );
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259
691
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260 return ret;
658
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261 }
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262
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263 /* Start the server & client threads */
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264 int fd_core_start(void)
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265 {
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266 /* Start server threads */
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267 CHECK_FCT( fd_servers_start() );
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268
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269 /* Start the peer state machines */
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270 CHECK_FCT( fd_psm_start() );
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271
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272 /* Start the core runner thread that handles main events (until shutdown) */
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273 CHECK_POSIX( pthread_create(&core_runner, NULL, core_runner_thread, NULL) );
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274
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275 /* Unlock threads waiting into fd_core_waitstartcomplete */
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276 CHECK_FCT( signal_framework_ready() );
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277
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278 /* Ok, everything is running now... */
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279 return 0;
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280 }
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281
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282
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283 /* Initialize shutdown of the framework. This is not blocking. */
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284 int fd_core_shutdown(void)
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285 {
686
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286 if (core_runner != (pthread_t)NULL) {
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287 /* Signal the framework to terminate */
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288 CHECK_FCT( fd_event_send(fd_g_config->cnf_main_ev, FDEV_TERMINATE, 0, NULL) );
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289 } else {
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290 /* The framework was maybe not fully initialized (ex: tests) */
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291 enum core_mode arg = CORE_MODE_IMMEDIATE;
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292 (void) core_runner_thread(&arg);
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293 }
658
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294
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295 return 0;
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296 }
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297
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298
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299 /* Wait for the shutdown to be complete -- this must always be called after fd_core_shutdown to relaim some resources. */
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300 int fd_core_wait_shutdown_complete(void)
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301 {
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302 int ret;
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303 void * th_ret = NULL;
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304
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305 if (core_runner != (pthread_t)NULL) {
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306 /* Just wait for core_runner_thread to complete and return gracefully */
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307 ret = pthread_join(core_runner, &th_ret);
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308 if (ret != 0) {
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309 fprintf(stderr, "Unable to wait for main framework thread termination: %s\n", strerror(ret));
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310 return ret;
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311 }
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312 }
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313
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314 return 0;
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315 }
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316
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317
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318
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319
"Welcome to our mercurial repository"