Mercurial > hg > freeDiameter
annotate freeDiameterd/main.c @ 1389:de90cf7f381e
freeDiameterd: add background (daemon) mode
| author | Thomas Klausner <tk@giga.or.at> |
|---|---|
| date | Tue, 15 Oct 2019 16:26:23 +0200 |
| parents | e70ce64ce689 |
| children | d4a4ab5239c7 |
| 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) 2015, 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 <stdlib.h> |
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49 #include <unistd.h> |
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50 |
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51 /* forward declarations */ |
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52 static int main_cmdline(int argc, char *argv[]); |
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53 static void * catch_signals(void * arg); |
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54 static pthread_t signals_thr; |
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55 |
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56 static char *conffile = NULL; |
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57 static int daemon_mode = 0; |
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58 static int gnutls_debug = 0; |
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59 |
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60 /* gnutls debug */ |
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61 static void fd_gnutls_debug(int level, const char * str) { |
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62 fd_log_debug(" [gnutls:%d] %s", level, str); |
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63 } |
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64 |
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65 |
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66 static void syslog_logger(int loglevel, const char * format, va_list args) |
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67 { |
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68 int level; |
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69 |
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70 switch (loglevel) { |
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71 case FD_LOG_NOTICE: |
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72 level = LOG_NOTICE; |
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73 break; |
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74 case FD_LOG_ERROR: |
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75 level = LOG_ERR; |
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76 break; |
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77 case FD_LOG_FATAL: |
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78 level = LOG_CRIT; |
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79 break; |
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80 default: |
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81 /* fallthrough */ |
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82 case FD_LOG_DEBUG: |
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83 /* some systems log LOG_DEBUG to a file; but |
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84 * freeDiameter debug output is too verbose */ |
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85 return; |
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86 #if 0 |
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87 level = LOG_DEBUG; |
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88 break; |
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89 #endif |
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90 } |
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91 |
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92 vsyslog(level, format, args); |
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93 } |
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94 |
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95 |
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96 /* freeDiameter starting point */ |
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97 int main(int argc, char * argv[]) |
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98 { |
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99 int ret; |
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100 sigset_t sig_all; |
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101 |
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102 /* Block all signals from the current thread and all its future children -- we will catch everything in catch_signals */ |
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103 sigfillset(&sig_all); |
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104 ret = pthread_sigmask(SIG_BLOCK, &sig_all, NULL); |
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105 ASSERT(ret == 0); |
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106 |
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107 /* Parse the command-line */ |
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108 ret = main_cmdline(argc, argv); |
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109 if (ret != 0) { |
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110 return ret; |
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111 } |
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112 |
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113 if (daemon_mode) { |
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114 TRACE_DEBUG(INFO, "entering background mode"); |
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115 CHECK_POSIX_DO( daemon(1, 0), goto error ); |
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116 } |
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117 |
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118 /* Initialize the core library */ |
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119 ret = fd_core_initialize(); |
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120 if (ret != 0) { |
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121 fprintf(stderr, "An error occurred during freeDiameter core library initialization.\n"); |
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122 return ret; |
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123 } |
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124 |
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125 /* Set gnutls debug level ? */ |
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126 if (gnutls_debug) { |
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127 gnutls_global_set_log_function((gnutls_log_func)fd_gnutls_debug); |
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128 gnutls_global_set_log_level (gnutls_debug); |
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129 TRACE_DEBUG(INFO, "Enabled GNUTLS debug at level %d", gnutls_debug); |
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130 } |
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131 |
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132 /* Parse the configuration file */ |
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133 CHECK_FCT_DO( fd_core_parseconf(conffile), goto error ); |
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134 |
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135 /* Start the servers */ |
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136 CHECK_FCT_DO( fd_core_start(), goto error ); |
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137 |
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138 /* Allow SIGINT and SIGTERM from this point to terminate the application */ |
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139 CHECK_POSIX_DO( pthread_create(&signals_thr, NULL, catch_signals, NULL), goto error ); |
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140 |
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141 TRACE_DEBUG(INFO, FD_PROJECT_BINARY " daemon initialized."); |
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142 |
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143 /* Now, just wait for termination */ |
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144 CHECK_FCT( fd_core_wait_shutdown_complete() ); |
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145 |
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146 /* Just in case it was not the result of a signal, we cancel signals_thr */ |
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147 fd_thr_term(&signals_thr); |
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148 |
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149 return 0; |
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150 error: |
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151 CHECK_FCT_DO( fd_core_shutdown(), ); |
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152 CHECK_FCT( fd_core_wait_shutdown_complete() ); |
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153 fd_thr_term(&signals_thr); |
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154 return -1; |
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155 } |
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156 |
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157 |
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158 /* Display package version */ |
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159 static void main_version_core(void) |
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160 { |
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161 printf("%s, version %s\n", FD_PROJECT_NAME, fd_core_version); |
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162 } |
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163 |
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164 /* Display package version and general info */ |
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165 static void main_version(void) |
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166 { |
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167 main_version_core(); |
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168 printf( "%s\n", FD_PROJECT_COPYRIGHT); |
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169 printf( "\nSee " FD_PROJECT_NAME " homepage at http://www.freediameter.net/\n" |
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170 " for information, updates and bug reports on this software.\n"); |
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171 } |
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172 |
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173 /* Print command-line options */ |
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174 static void main_help( void ) |
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175 { |
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176 main_version_core(); |
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177 printf( " This daemon is an implementation of the Diameter protocol\n" |
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178 " used for Authentication, Authorization, and Accounting (AAA).\n"); |
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179 printf("\nUsage: " FD_PROJECT_BINARY " [OPTIONS]...\n"); |
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180 printf( " -h, --help Print help and exit\n" |
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181 " -V, --version Print version and exit\n" |
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182 " -c, --config=filename Read configuration from this file instead of the \n" |
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183 " default location (" DEFAULT_CONF_PATH "/" FD_DEFAULT_CONF_FILENAME ")\n" |
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184 " -D, --daemon Start program in background\n" |
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185 " -s, --syslog Write log output to syslog (instead of stdout)\n"); |
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186 printf( "\nDebug:\n" |
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187 " These options are mostly useful for developers\n" |
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188 " -d, --debug Increase verbosity of debug messages if default logger is used\n" |
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189 " --dbg_gnutls <int> Enable GNU TLS debug at level <int>\n" |
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190 " -f, --dbg_func <func> Enable all traces within the function <func>\n" |
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191 " -F, --dbg_file <file.c> Enable all traces within the file <file.c> (basename match)\n" |
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192 " -l, --dbglocale Set the locale for error messages\n" |
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193 " -q, --quiet Decrease verbosity if default logger is used\n" |
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194 ); |
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195 } |
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196 |
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197 /* Parse the command-line */ |
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198 static int main_cmdline(int argc, char *argv[]) |
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199 { |
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200 int c; |
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201 int option_index = 0; |
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202 char * locale; |
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203 |
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204 struct option long_options[] = { |
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205 { "help", no_argument, NULL, 'h' }, |
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206 { "version", no_argument, NULL, 'V' }, |
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207 { "config", required_argument, NULL, 'c' }, |
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208 { "syslog", no_argument, NULL, 's' }, |
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209 { "daemon", no_argument, NULL, 'D' }, |
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210 { "debug", no_argument, NULL, 'd' }, |
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211 { "quiet", no_argument, NULL, 'q' }, |
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212 { "dbglocale", optional_argument, NULL, 'l' }, |
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213 { "dbg_func", required_argument, NULL, 'f' }, |
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214 { "dbg_file", required_argument, NULL, 'F' }, |
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215 { "dbg_gnutls", required_argument, NULL, 'g' }, |
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216 { NULL, 0, NULL, 0 } |
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217 }; |
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218 |
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219 /* Loop on arguments */ |
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220 while (1) { |
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221 c = getopt_long (argc, argv, "hVc:Ddql:f:F:g:s", long_options, &option_index); |
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222 if (c == -1) |
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223 break; /* Exit from the loop. */ |
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224 |
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225 switch (c) { |
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226 case 'h': /* Print help and exit. */ |
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227 main_help(); |
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228 exit(0); |
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229 |
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230 case 'V': /* Print version and exit. */ |
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231 main_version(); |
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232 exit(0); |
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233 |
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234 case 'c': /* Read configuration from this file instead of the default location.. */ |
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235 if (optarg == NULL ) { |
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236 fprintf(stderr, "Missing argument with --config directive\n"); |
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237 return EINVAL; |
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238 } |
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239 conffile = optarg; |
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240 break; |
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241 |
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242 case 'D': |
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243 daemon_mode = 1; |
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244 break; |
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245 |
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246 case 'l': /* Change the locale. */ |
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247 locale = setlocale(LC_ALL, optarg?:""); |
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248 if (!locale) { |
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249 fprintf(stderr, "Unable to set locale (%s)\n", optarg); |
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250 return EINVAL; |
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251 } |
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252 break; |
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253 |
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254 case 'd': /* Increase verbosity of debug messages. */ |
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255 fd_g_debug_lvl--; |
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256 break; |
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257 |
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258 case 'f': /* Full debug for the function with this name. */ |
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259 #ifdef DEBUG |
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260 fd_debug_one_function = optarg; |
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261 fd_g_debug_lvl = FD_LOG_DEBUG; |
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262 #else /* DEBUG */ |
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263 fprintf(stderr, "Error: must compile with DEBUG support to use --dbg_func feature!\n"); |
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264 return EINVAL; |
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265 #endif /* DEBUG */ |
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266 break; |
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267 |
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268 case 'F': /* Full debug for the file with this name. */ |
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269 #ifdef DEBUG |
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270 fd_debug_one_file = basename(optarg); |
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271 fd_g_debug_lvl = FD_LOG_DEBUG; |
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272 #else /* DEBUG */ |
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273 fprintf(stderr, "Error: must compile with DEBUG support to use --dbg_file feature!\n"); |
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274 return EINVAL; |
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275 #endif /* DEBUG */ |
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276 break; |
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277 |
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278 case 'g': /* Set a debug level and function for GNU TLS calls. */ |
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279 gnutls_debug = (int)atoi(optarg); |
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280 break; |
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281 |
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282 case 'q': /* Decrease verbosity then remove debug messages. */ |
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283 fd_g_debug_lvl++; |
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284 break; |
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285 |
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286 case 's': /* Write log data using syslog(3) */ |
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287 if (fd_log_handler_register(syslog_logger) != 0) { |
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288 fprintf(stderr, "Cannot initialize syslog logger\n"); |
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289 return EINVAL; |
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290 } |
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291 break; |
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292 |
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293 case '?': /* Invalid option. */ |
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294 /* `getopt_long' already printed an error message. */ |
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295 fprintf(stderr, "getopt_long found an invalid character\n"); |
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296 return EINVAL; |
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297 |
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298 default: /* bug: option not considered. */ |
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299 fprintf(stderr, "A command-line option is missing in parser: %c\n", c); |
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300 ASSERT(0); |
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301 return EINVAL; |
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302 } |
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303 } |
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304 |
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305 return 0; |
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306 } |
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307 |
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308 /* Handle some signals */ |
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309 static void * catch_signals(void * arg) |
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310 { |
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311 sigset_t ss; |
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312 fd_log_threadname ( "signals catcher" ); |
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313 |
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314 sigemptyset(&ss); |
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315 |
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316 /* Signals that terminate the daemon */ |
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317 sigaddset(&ss, SIGTERM); |
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318 sigaddset(&ss, SIGINT); |
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319 |
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320 /* Signals that send an event */ |
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321 sigaddset(&ss, SIGUSR1); |
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322 sigaddset(&ss, SIGUSR2); |
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323 |
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324 /* We unblock all other signals, so that their default handler is used (such as SIGTSTP) */ |
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325 CHECK_SYS_DO( pthread_sigmask( SIG_SETMASK, &ss, NULL ), goto out ); |
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326 |
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327 /* Now loop on the reception of the signal */ |
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328 while (1) { |
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329 int sig, *ps; |
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330 |
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331 /* Wait to receive the next signal */ |
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332 CHECK_POSIX_DO( sigwait(&ss, &sig), break ); |
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333 |
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334 TRACE_DEBUG(FULL, "Signal %d caught", sig); |
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335 |
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336 switch (sig) { |
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337 case SIGUSR1: |
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338 case SIGUSR2: |
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339 CHECK_MALLOC_DO( ps = malloc(sizeof(int)), goto out); |
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340 *ps = sig; |
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341 CHECK_FCT_DO( fd_event_send(fd_g_config->cnf_main_ev, FDEV_TRIGGER, sizeof(int), ps), goto out ); |
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342 break; |
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343 |
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344 case SIGINT: |
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345 case SIGTERM: |
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346 CHECK_FCT_DO( fd_core_shutdown(), goto out ); |
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347 |
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348 } |
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349 } |
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350 out: |
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351 /* Better way to handle this ? */ |
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Initial commit for 1.1.0:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
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352 ASSERT(0); |
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Initial commit for 1.1.0:
Sebastien Decugis <sdecugis@nict.go.jp>
parents:
628
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353 return NULL; |
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Improvements to usability, still work ongoing
Sebastien Decugis <sdecugis@nict.go.jp>
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354 } |