Mercurial > hg > freeDiameter
annotate freeDiameterd/main.c @ 1554:566bb46cc73f
Updated copyright information
| author | Sebastien Decugis <sdecugis@freediameter.net> |
|---|---|
| date | Tue, 06 Oct 2020 21:34:53 +0800 |
| parents | 32f158d0d859 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /********************************************************************************************************* |
| 2 * Software License Agreement (BSD License) * | |
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3 * Author: Sebastien Decugis <sdecugis@freediameter.net> * |
| 0 | 4 * * |
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5 * Copyright (c) 2020, WIDE Project and NICT * |
| 0 | 6 * All rights reserved. * |
| 7 * * | |
| 8 * Redistribution and use of this software in source and binary forms, with or without modification, are * | |
| 9 * permitted provided that the following conditions are met: * | |
| 10 * * | |
| 11 * * Redistributions of source code must retain the above * | |
| 12 * copyright notice, this list of conditions and the * | |
| 13 * following disclaimer. * | |
| 14 * * | |
| 15 * * Redistributions in binary form must reproduce the above * | |
| 16 * copyright notice, this list of conditions and the * | |
| 17 * following disclaimer in the documentation and/or other * | |
| 18 * materials provided with the distribution. * | |
| 19 * * | |
| 20 * * Neither the name of the WIDE Project or NICT nor the * | |
| 21 * names of its contributors may be used to endorse or * | |
| 22 * promote products derived from this software without * | |
| 23 * specific prior written permission of WIDE Project and * | |
| 24 * NICT. * | |
| 25 * * | |
| 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * | |
| 27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * | |
| 28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * | |
| 29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * | |
| 30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * | |
| 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * | |
| 32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * | |
| 33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * | |
| 34 *********************************************************************************************************/ | |
| 35 | |
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36 #if defined(__GLIBC__) |
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37 #define _BSD_SOURCE /* for vsyslog */ |
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38 #endif |
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39 |
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40 #include <freeDiameter/freeDiameter-host.h> |
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41 #include <freeDiameter/libfdcore.h> |
| 0 | 42 |
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43 #include <signal.h> |
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44 #include <getopt.h> |
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45 #include <locale.h> |
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46 #include <syslog.h> |
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47 #include <stdarg.h> |
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48 #include <stdio.h> |
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49 #include <stdlib.h> |
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50 #include <string.h> |
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51 #include <unistd.h> |
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52 |
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53 /* forward declarations */ |
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54 static int main_cmdline(int argc, char *argv[]); |
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55 static void * catch_signals(void * arg); |
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56 static pthread_t signals_thr; |
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57 |
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58 static char *conffile = NULL; |
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59 static int daemon_mode = 0; |
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60 static int gnutls_debug = 0; |
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61 static char *pidfile = NULL; |
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62 |
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63 /* gnutls debug */ |
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64 static void fd_gnutls_debug(int level, const char * str) { |
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65 fd_log_debug(" [gnutls:%d] %s", level, str); |
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66 } |
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67 |
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68 static void pidfile_cleanup(void) |
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69 { |
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70 if (pidfile != NULL) { |
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71 LOG_I("Removing pidfile '%s'", pidfile); |
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72 CHECK_SYS_DO( unlink(pidfile), /* ignore */ ); |
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73 pidfile = NULL; |
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74 } |
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75 } |
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76 |
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77 static int pidfile_create(void) |
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78 { |
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79 if (pidfile == NULL) { |
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80 return 0; |
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81 } |
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82 |
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83 /* Create pidfile */ |
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84 FILE * fp = fopen(pidfile, "w"); |
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85 if (fp == NULL) { |
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86 int ret = errno; |
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87 LOG_F("Unable to write pidfile '%s'; Error: %s", |
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88 pidfile, strerror(ret)); |
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89 pidfile = NULL; /* disable pidfile_cleanup() */ |
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90 return ret; |
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91 } |
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92 |
| 1450 | 93 /* Cleanup pidfile on exit */ |
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94 if (atexit(pidfile_cleanup) != 0) { |
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95 LOG_F("Unable to setup pidfile cleanup"); |
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96 CHECK_SYS( fclose(fp) ); |
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97 pidfile_cleanup(); |
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98 return EINVAL; |
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99 } |
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100 |
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101 /* Write the pid and close pidfile */ |
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102 fprintf(fp, "%d\n", getpid()); |
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103 CHECK_SYS_DO( fclose(fp), { pidfile_cleanup(); return __ret__; } ); |
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104 |
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105 LOG_I("Created pidfile '%s'", pidfile); |
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106 return 0; |
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107 } |
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108 |
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109 |
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110 static void syslog_logger(int loglevel, const char * format, va_list args) |
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111 { |
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112 if (loglevel < fd_g_debug_lvl) { |
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113 return; |
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114 } |
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115 |
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116 int level; |
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117 |
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118 switch (loglevel) { |
| 1407 | 119 case FD_LOG_INFO: |
| 120 level = LOG_INFO; | |
| 121 break; | |
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122 case FD_LOG_NOTICE: |
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123 level = LOG_NOTICE; |
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124 break; |
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125 case FD_LOG_ERROR: |
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126 level = LOG_ERR; |
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127 break; |
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128 case FD_LOG_FATAL: |
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129 level = LOG_CRIT; |
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130 break; |
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131 default: |
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132 /* fallthrough */ |
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133 case FD_LOG_ANNOYING: |
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134 case FD_LOG_DEBUG: |
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135 level = LOG_DEBUG; |
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136 break; |
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137 } |
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138 |
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139 vsyslog(level | LOG_DAEMON, format, args); |
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140 } |
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141 |
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142 |
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143 /* freeDiameter starting point */ |
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144 int main(int argc, char * argv[]) |
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145 { |
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146 int ret; |
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147 sigset_t sig_all; |
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148 |
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149 /* Block all signals from the current thread and all its future children -- we will catch everything in catch_signals */ |
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150 sigfillset(&sig_all); |
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151 ret = pthread_sigmask(SIG_BLOCK, &sig_all, NULL); |
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152 ASSERT(ret == 0); |
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153 |
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154 /* Parse the command-line */ |
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155 ret = main_cmdline(argc, argv); |
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156 if (ret != 0) { |
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157 return EXIT_FAILURE; |
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158 } |
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159 |
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160 if (daemon_mode) { |
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161 TRACE_DEBUG(INFO, "entering background mode"); |
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162 CHECK_SYS_DO( daemon(1, 0), return EXIT_FAILURE ); |
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163 } |
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164 |
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165 CHECK_FCT_DO( pidfile_create(), return EXIT_FAILURE ); |
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166 |
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167 /* Initialize the core library */ |
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168 ret = fd_core_initialize(); |
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169 if (ret != 0) { |
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170 fprintf(stderr, "An error occurred during freeDiameter core library initialization.\n"); |
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171 return EXIT_FAILURE; |
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172 } |
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173 |
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174 /* Set gnutls debug level ? */ |
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175 if (gnutls_debug) { |
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176 gnutls_global_set_log_function((gnutls_log_func)fd_gnutls_debug); |
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177 gnutls_global_set_log_level (gnutls_debug); |
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178 TRACE_DEBUG(INFO, "Enabled GNUTLS debug at level %d", gnutls_debug); |
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179 } |
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180 |
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181 /* Parse the configuration file */ |
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182 CHECK_FCT_DO( fd_core_parseconf(conffile), goto error ); |
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183 |
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184 /* Start the servers */ |
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185 CHECK_FCT_DO( fd_core_start(), goto error ); |
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186 |
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187 /* Allow SIGINT and SIGTERM from this point to terminate the application */ |
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188 CHECK_POSIX_DO( pthread_create(&signals_thr, NULL, catch_signals, NULL), goto error ); |
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189 |
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190 TRACE_DEBUG(INFO, FD_PROJECT_BINARY " daemon initialized."); |
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191 |
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192 /* Now, just wait for termination */ |
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193 CHECK_FCT_DO( fd_core_wait_shutdown_complete(), return EXIT_FAILURE ); |
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194 |
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195 /* Just in case it was not the result of a signal, we cancel signals_thr */ |
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196 fd_thr_term(&signals_thr); |
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197 |
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198 return EXIT_SUCCESS; |
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199 error: |
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200 CHECK_FCT_DO( fd_core_shutdown(), ); |
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201 CHECK_FCT_DO( fd_core_wait_shutdown_complete(), return EXIT_FAILURE ); |
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202 fd_thr_term(&signals_thr); |
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203 return EXIT_FAILURE; |
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204 } |
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205 |
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206 |
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207 /* Display package version */ |
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208 static void main_version_core(void) |
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209 { |
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210 printf("%s, version %s\n", FD_PROJECT_NAME, fd_core_version); |
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211 } |
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212 |
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213 /* Display package version and general info */ |
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214 static void main_version(void) |
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215 { |
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216 main_version_core(); |
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217 printf( "%s\n", FD_PROJECT_COPYRIGHT); |
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218 printf( "\nSee " FD_PROJECT_NAME " homepage at http://www.freediameter.net/\n" |
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219 " for information, updates and bug reports on this software.\n"); |
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220 } |
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221 |
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222 /* Print command-line options */ |
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223 static void main_help( void ) |
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224 { |
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225 main_version_core(); |
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226 printf( " This daemon is an implementation of the Diameter protocol\n" |
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227 " used for Authentication, Authorization, and Accounting (AAA).\n"); |
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228 printf("\nUsage: " FD_PROJECT_BINARY " [OPTIONS]...\n"); |
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229 printf( " -h, --help Print help and exit\n" |
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230 " -V, --version Print version and exit\n" |
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231 " -c, --config=filename Read configuration from this file instead of the \n" |
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232 " default location (" DEFAULT_CONF_PATH "/" FD_DEFAULT_CONF_FILENAME ")\n" |
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233 " -D, --daemon Start program in background\n" |
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234 " -p, --pidfile=filename Write PID to filename\n" |
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235 " -s, --syslog Write log output to syslog (instead of stdout)\n"); |
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236 printf( "\nDebug:\n" |
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237 " These options are mostly useful for developers\n" |
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238 " -d, --debug Increase verbosity of log messages\n" |
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239 " -f, --dbg_func <func> Enable all traces within the function <func>\n" |
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240 " -F, --dbg_file <file.c> Enable all traces within the file <file.c> (basename match)\n" |
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241 " -g, --dbg_gnutls <int> Enable GNU TLS debug at level <int>\n" |
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242 " -l, --dbglocale Set the locale for error messages\n" |
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243 " -q, --quiet Decrease verbosity of log messages\n" |
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244 ); |
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245 } |
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246 |
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247 /* Parse the command-line */ |
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248 static int main_cmdline(int argc, char *argv[]) |
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249 { |
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250 int c; |
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251 int option_index = 0; |
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252 char * locale; |
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253 |
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254 struct option long_options[] = { |
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255 { "help", no_argument, NULL, 'h' }, |
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256 { "version", no_argument, NULL, 'V' }, |
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257 { "config", required_argument, NULL, 'c' }, |
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258 { "syslog", no_argument, NULL, 's' }, |
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259 { "daemon", no_argument, NULL, 'D' }, |
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260 { "pidfile", required_argument, NULL, 'p' }, |
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261 { "debug", no_argument, NULL, 'd' }, |
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262 { "quiet", no_argument, NULL, 'q' }, |
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263 { "dbglocale", optional_argument, NULL, 'l' }, |
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264 { "dbg_func", required_argument, NULL, 'f' }, |
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265 { "dbg_file", required_argument, NULL, 'F' }, |
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266 { "dbg_gnutls", required_argument, NULL, 'g' }, |
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267 { NULL, 0, NULL, 0 } |
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268 }; |
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269 |
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270 /* Loop on arguments */ |
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271 while (1) { |
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272 c = getopt_long (argc, argv, "hVc:Dp:dql:f:F:g:s", long_options, &option_index); |
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273 if (c == -1) |
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274 break; /* Exit from the loop. */ |
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275 |
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276 switch (c) { |
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277 case 'h': /* Print help and exit. */ |
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278 main_help(); |
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279 exit(EXIT_SUCCESS); |
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280 |
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281 case 'V': /* Print version and exit. */ |
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282 main_version(); |
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283 exit(EXIT_SUCCESS); |
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284 |
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285 case 'c': /* Read configuration from this file instead of the default location.. */ |
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286 if (optarg == NULL ) { |
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287 fprintf(stderr, "Missing argument with --config directive\n"); |
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288 return EINVAL; |
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289 } |
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290 conffile = optarg; |
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291 break; |
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292 |
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293 case 'D': |
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294 daemon_mode = 1; |
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295 break; |
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296 |
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297 case 'p': /* Write pidfile */ |
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298 if (optarg == NULL ) { |
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299 fprintf(stderr, "Missing argument with --pidfile directive\n"); |
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300 return EINVAL; |
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301 } |
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302 pidfile = optarg; |
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303 break; |
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304 |
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305 case 'l': /* Change the locale. */ |
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306 locale = setlocale(LC_ALL, optarg?:""); |
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307 if (!locale) { |
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308 fprintf(stderr, "Unable to set locale (%s)\n", optarg); |
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309 return EINVAL; |
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310 } |
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311 break; |
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312 |
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313 case 'd': /* Increase verbosity of debug messages. */ |
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314 fd_g_debug_lvl--; |
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315 break; |
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316 |
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317 case 'f': /* Full debug for the function with this name. */ |
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318 #ifdef DEBUG |
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319 fd_debug_one_function = optarg; |
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320 fd_g_debug_lvl = FD_LOG_DEBUG; |
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321 #else /* DEBUG */ |
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322 fprintf(stderr, "Error: must compile with DEBUG support to use --dbg_func feature!\n"); |
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323 return EINVAL; |
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324 #endif /* DEBUG */ |
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325 break; |
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326 |
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327 case 'F': /* Full debug for the file with this name. */ |
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328 #ifdef DEBUG |
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329 fd_debug_one_file = basename(optarg); |
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330 fd_g_debug_lvl = FD_LOG_DEBUG; |
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331 #else /* DEBUG */ |
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332 fprintf(stderr, "Error: must compile with DEBUG support to use --dbg_file feature!\n"); |
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333 return EINVAL; |
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334 #endif /* DEBUG */ |
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335 break; |
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336 |
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337 case 'g': /* Set a debug level and function for GNU TLS calls. */ |
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338 gnutls_debug = (int)atoi(optarg); |
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339 break; |
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340 |
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341 case 'q': /* Decrease verbosity then remove debug messages. */ |
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342 fd_g_debug_lvl++; |
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343 break; |
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344 |
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345 case 's': /* Write log data using syslog(3) */ |
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346 if (fd_log_handler_register(syslog_logger) != 0) { |
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347 fprintf(stderr, "Cannot initialize syslog logger\n"); |
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348 return EINVAL; |
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349 } |
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350 break; |
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351 |
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352 case '?': /* Invalid option. */ |
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353 /* `getopt_long' already printed an error message. */ |
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354 fprintf(stderr, "getopt_long found an invalid character\n"); |
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355 return EINVAL; |
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356 |
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357 default: /* bug: option not considered. */ |
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358 fprintf(stderr, "A command-line option is missing in parser: %c\n", c); |
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359 ASSERT(0); |
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360 return EINVAL; |
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361 } |
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362 } |
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363 |
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364 return 0; |
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365 } |
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366 |
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367 /* Handle some signals */ |
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368 static void * catch_signals(void * arg) |
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369 { |
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370 sigset_t ss; |
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371 fd_log_threadname ( "signals catcher" ); |
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372 |
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373 sigemptyset(&ss); |
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374 |
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375 /* Signals that terminate the daemon */ |
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376 sigaddset(&ss, SIGTERM); |
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377 sigaddset(&ss, SIGINT); |
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378 |
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379 /* Signals that send an event */ |
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380 sigaddset(&ss, SIGUSR1); |
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381 sigaddset(&ss, SIGUSR2); |
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382 |
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383 /* We unblock all other signals, so that their default handler is used (such as SIGTSTP) */ |
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384 CHECK_SYS_DO( pthread_sigmask( SIG_SETMASK, &ss, NULL ), goto out ); |
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385 |
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386 /* Now loop on the reception of the signal */ |
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387 while (1) { |
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388 int sig, *ps; |
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389 |
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390 /* Wait to receive the next signal */ |
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391 CHECK_POSIX_DO( sigwait(&ss, &sig), break ); |
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392 |
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393 TRACE_DEBUG(FULL, "Signal %d caught", sig); |
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394 |
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395 switch (sig) { |
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396 case SIGUSR1: |
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397 case SIGUSR2: |
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398 CHECK_MALLOC_DO( ps = malloc(sizeof(int)), goto out); |
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399 *ps = sig; |
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400 CHECK_FCT_DO( fd_event_send(fd_g_config->cnf_main_ev, FDEV_TRIGGER, sizeof(int), ps), goto out ); |
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401 break; |
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402 |
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403 case SIGINT: |
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404 case SIGTERM: |
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405 CHECK_FCT_DO( fd_core_shutdown(), goto out ); |
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406 |
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407 } |
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408 } |
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409 out: |
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410 /* Better way to handle this ? */ |
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411 ASSERT(0); |
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412 return NULL; |
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413 } |