Mercurial > hg > freeDiameter

annotate freeDiameter/config.c @ 23:db6c40b8b307

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Added some code in cnxctx.c mainly
author Sebastien Decugis <sdecugis@nict.go.jp>
date Tue, 20 Oct 2009 17:30:20 +0900
parents 0b3b46da2c12
children bd83ce9328ed
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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 * *
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5 * Copyright (c) 2009, WIDE Project and NICT *
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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 "fD.h"
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37
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38 /* Configuration management */
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39
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40 #ifndef GNUTLS_DEFAULT_PRIORITY
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41 # define GNUTLS_DEFAULT_PRIORITY "NORMAL"
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42 #endif /* GNUTLS_DEFAULT_PRIORITY */
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43 #ifndef GNUTLS_DEFAULT_DHBITS
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44 # define GNUTLS_DEFAULT_DHBITS 1024
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45 #endif /* GNUTLS_DEFAULT_DHBITS */
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46
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47 /* Initialize the fd_g_config structure to default values */
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48 int fd_conf_init()
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49 {
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50 TRACE_ENTRY();
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51
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52 fd_g_config->cnf_eyec = EYEC_CONFIG;
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53 fd_g_config->cnf_file = DEFAULT_CONF_FILE;
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54
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55 fd_g_config->cnf_timer_tc = 30;
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56 fd_g_config->cnf_timer_tw = 30;
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57
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58 fd_g_config->cnf_port = 3868;
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59 fd_g_config->cnf_port_tls = 3869;
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60 fd_g_config->cnf_sctp_str = 30;
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61 fd_list_init(&fd_g_config->cnf_endpoints, NULL);
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62 fd_list_init(&fd_g_config->cnf_apps, NULL);
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63 #ifdef DISABLE_SCTP
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64 fd_g_config->cnf_flags.no_sctp = 1;
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65 #endif /* DISABLE_SCTP */
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66
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67 fd_g_config->cnf_orstateid = (uint32_t) time(NULL);
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68
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69 CHECK_FCT( fd_dict_init(&fd_g_config->cnf_dict) );
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70 CHECK_FCT( fd_fifo_new(&fd_g_config->cnf_main_ev) );
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71
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72 /* TLS parameters */
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73 CHECK_GNUTLS_DO( gnutls_certificate_allocate_credentials (&fd_g_config->cnf_sec_data.credentials), return ENOMEM );
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74 CHECK_GNUTLS_DO( gnutls_dh_params_init (&fd_g_config->cnf_sec_data.dh_cache), return ENOMEM );
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75
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76 return 0;
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77 }
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78
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79 void fd_conf_dump()
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80 {
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81 if (!TRACE_BOOL(INFO))
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82 return;
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83
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84 fd_log_debug("-- Configuration :\n");
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85 fd_log_debug(" Debug trace level ...... : %+d\n", fd_g_debug_lvl);
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86 fd_log_debug(" Configuration file ..... : %s\n", fd_g_config->cnf_file);
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87 fd_log_debug(" Diameter Identity ...... : %s (l:%Zi)\n", fd_g_config->cnf_diamid, fd_g_config->cnf_diamid_len);
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88 fd_log_debug(" Diameter Realm ......... : %s (l:%Zi)\n", fd_g_config->cnf_diamrlm, fd_g_config->cnf_diamrlm_len);
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89 fd_log_debug(" Tc Timer ............... : %u\n", fd_g_config->cnf_timer_tc);
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90 fd_log_debug(" Tw Timer ............... : %u\n", fd_g_config->cnf_timer_tw);
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91 fd_log_debug(" Local port ............. : %hu\n", fd_g_config->cnf_port);
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92 fd_log_debug(" Local secure port ...... : %hu\n", fd_g_config->cnf_port_tls);
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93 fd_log_debug(" Number of SCTP streams . : %hu\n", fd_g_config->cnf_sctp_str);
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94 if (FD_IS_LIST_EMPTY(&fd_g_config->cnf_endpoints)) {
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95 fd_log_debug(" Local endpoints ........ : Default (use all available)\n");
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96 } else {
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97 struct fd_list * li = fd_g_config->cnf_endpoints.next;
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98 fd_log_debug(" Local endpoints ........ : ");
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99 while (li != &fd_g_config->cnf_endpoints) {
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100 struct fd_endpoint * ep = (struct fd_endpoint *)li;
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101 if (li != fd_g_config->cnf_endpoints.next) fd_log_debug(" ");
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102 sSA_DUMP_NODE( &ep->sa, NI_NUMERICHOST );
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103 fd_log_debug("\n");
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104 li = li->next;
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105 }
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106 }
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107 if (FD_IS_LIST_EMPTY(&fd_g_config->cnf_apps)) {
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108 fd_log_debug(" Local applications ..... : (none)\n");
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109 } else {
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110 struct fd_list * li = fd_g_config->cnf_apps.next;
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111 fd_log_debug(" Local applications ..... : ");
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112 while (li != &fd_g_config->cnf_apps) {
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113 struct fd_app * app = (struct fd_app *)li;
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114 if (li != fd_g_config->cnf_apps.next) fd_log_debug(" ");
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115 fd_log_debug("App: %u\t%s%s%s\tVnd: %u\n",
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116 app->appid,
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117 app->flags.auth ? "Au" : "--",
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118 app->flags.acct ? "Ac" : "--",
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119 app->flags.common ? "C" : "-",
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120 app->vndid);
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121 li = li->next;
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122 }
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123 }
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diff changeset
124
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125 fd_log_debug(" Flags : - IP ........... : %s\n", fd_g_config->cnf_flags.no_ip4 ? "DISABLED" : "Enabled");
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126 fd_log_debug(" - IPv6 ......... : %s\n", fd_g_config->cnf_flags.no_ip6 ? "DISABLED" : "Enabled");
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127 fd_log_debug(" - Relay app .... : %s\n", fd_g_config->cnf_flags.no_fwd ? "DISABLED" : "Enabled");
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128 fd_log_debug(" - TCP .......... : %s\n", fd_g_config->cnf_flags.no_tcp ? "DISABLED" : "Enabled");
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129 #ifdef DISABLE_SCTP
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130 fd_log_debug(" - SCTP ......... : DISABLED (at compilation)\n");
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131 #else /* DISABLE_SCTP */
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132 fd_log_debug(" - SCTP ......... : %s\n", fd_g_config->cnf_flags.no_sctp ? "DISABLED" : "Enabled");
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133 #endif /* DISABLE_SCTP */
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134 fd_log_debug(" - Pref. proto .. : %s\n", fd_g_config->cnf_flags.pr_tcp ? "TCP" : "SCTP");
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135 fd_log_debug(" - TLS method ... : %s\n", fd_g_config->cnf_flags.tls_alg ? "INBAND" : "Separate port");
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diff changeset
136
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diff changeset
137 fd_log_debug(" TLS : - Certificate .. : %s\n", fd_g_config->cnf_sec_data.cert_file ?: "(NONE)");
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138 fd_log_debug(" - Private key .. : %s\n", fd_g_config->cnf_sec_data.key_file ?: "(NONE)");
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139 fd_log_debug(" - CA (trust) ... : %s\n", fd_g_config->cnf_sec_data.ca_file ?: "(none)");
17
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140 fd_log_debug(" - CRL .......... : %s\n", fd_g_config->cnf_sec_data.crl_file ?: "(none)");
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141 fd_log_debug(" - Priority ..... : %s\n", fd_g_config->cnf_sec_data.prio_string ?: "(default: '" GNUTLS_DEFAULT_PRIORITY "')");
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142 fd_log_debug(" - DH bits ...... : %d\n", fd_g_config->cnf_sec_data.dh_bits ?: GNUTLS_DEFAULT_DHBITS);
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diff changeset
143
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144 fd_log_debug(" Origin-State-Id ........ : %u\n", fd_g_config->cnf_orstateid);
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145 }
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146
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147 /* Parse the configuration file (using the yacc parser) */
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148 int fd_conf_parse()
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149 {
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150 extern FILE * fddin;
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151
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152 TRACE_DEBUG (FULL, "Parsing configuration file: %s", fd_g_config->cnf_file);
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153
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154 fddin = fopen(fd_g_config->cnf_file, "r");
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155 if (fddin == NULL) {
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156 int ret = errno;
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157 fprintf(stderr, "Unable to open configuration file %s for reading: %s\n", fd_g_config->cnf_file, strerror(ret));
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158 return ret;
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159 }
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160
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161 /* call yacc parser */
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162 CHECK_FCT( fddparse(fd_g_config) );
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163
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164 /* close the file */
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165 fclose(fddin);
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166
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diff changeset
167 /* Check that TLS private key was given */
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diff changeset
168 if (! fd_g_config->cnf_sec_data.key_file) {
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169 fprintf(stderr, "Missing private key configuration for TLS. Please provide the TLS_cred configuration directive.\n");
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170 return EINVAL;
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171 }
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diff changeset
172
8
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173 /* Resolve hostname if not provided */
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174 if (fd_g_config->cnf_diamid == NULL) {
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175 #ifndef HOST_NAME_MAX
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176 #define HOST_NAME_MAX 1024
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177 #endif /* HOST_NAME_MAX */
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178 char buf[HOST_NAME_MAX + 1];
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179 struct addrinfo hints, *info;
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180 int ret;
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181
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182 /* local host name */
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183 CHECK_SYS(gethostname(buf, sizeof(buf)));
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184
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185 /* get FQDN */
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186 memset(&hints, 0, sizeof hints);
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187 hints.ai_flags = AI_CANONNAME;
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188
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189 ret = getaddrinfo(buf, NULL, &hints, &info);
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190 if (ret != 0) {
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191 fprintf(stderr, "Error resolving local FQDN :\n"
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192 " '%s' : %s\n"
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193 "Please provide LocalIdentity in configuration file.\n",
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194 buf, gai_strerror(ret));
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195 return EINVAL;
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196 }
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diff changeset
197 CHECK_MALLOC( fd_g_config->cnf_diamid = strdup(info->ai_canonname) );
8
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198 freeaddrinfo(info);
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199 }
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200
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201 /* cache the length of the diameter id for the session module */
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diff changeset
202 fd_g_config->cnf_diamid_len = strlen(fd_g_config->cnf_diamid);
8
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203
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204 /* Handle the realm part */
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diff changeset
205 if (fd_g_config->cnf_diamrlm == NULL) {
8
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206 char * start = NULL;
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207
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208 /* Check the diameter identity is a fqdn */
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diff changeset
209 start = strchr(fd_g_config->cnf_diamid, '.');
8
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210 if ((start == NULL) || (start[1] == '\0')) {
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211 fprintf(stderr, "Unable to extract realm from the LocalIdentity '%s'.\n"
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212 "Please fix your LocalIdentity setting or provide LocalRealm.\n",
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diff changeset
213 fd_g_config->cnf_diamid);
8
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214 return EINVAL;
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215 }
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216
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217 CHECK_MALLOC( fd_g_config->cnf_diamrlm = strdup( start + 1 ) );
8
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218 }
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diff changeset
219 fd_g_config->cnf_diamrlm_len = strlen(fd_g_config->cnf_diamrlm);
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220
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221 /* Validate some flags */
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diff changeset
222 if (fd_g_config->cnf_flags.no_ip4 && fd_g_config->cnf_flags.no_ip6) {
8
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223 fprintf(stderr, "IP and IPv6 cannot be disabled at the same time.\n");
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224 return EINVAL;
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225 }
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diff changeset
226 if (fd_g_config->cnf_flags.no_tcp && fd_g_config->cnf_flags.no_sctp) {
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227 fprintf(stderr, "TCP and SCTP cannot be disabled at the same time.\n");
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228 return EINVAL;
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229 }
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230
22
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231 /* Validate local endpoints */
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diff changeset
232 if ((!FD_IS_LIST_EMPTY(&fd_g_config->cnf_endpoints)) && (fd_g_config->cnf_flags.no_ip4 || fd_g_config->cnf_flags.no_ip6)) {
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diff changeset
233 struct fd_list * li;
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diff changeset
234 for ( li = fd_g_config->cnf_endpoints.next; li != &fd_g_config->cnf_endpoints; li = li->next) {
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diff changeset
235 struct fd_endpoint * ep = (struct fd_endpoint *)li;
23
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diff changeset
236 if ( (fd_g_config->cnf_flags.no_ip4 && (ep->sa.sa_family == AF_INET))
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diff changeset
237 ||(fd_g_config->cnf_flags.no_ip6 && (ep->sa.sa_family == AF_INET6)) ) {
22
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238 li = li->prev;
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239 fd_list_unlink(&ep->chain);
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diff changeset
240 if (TRACE_BOOL(INFO)) {
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diff changeset
241 fd_log_debug("Info: Removing local address conflicting with the flags no_IP / no_IP6 : ");
23
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diff changeset
242 sSA_DUMP_NODE( &ep->sa, AI_NUMERICHOST );
22
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243 fd_log_debug("\n");
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244 }
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diff changeset
245 free(ep);
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246 }
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diff changeset
247 }
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248 }
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249
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250 /* Configure TLS default parameters */
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251 if (! fd_g_config->cnf_sec_data.prio_string) {
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252 const char * err_pos = NULL;
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253 CHECK_GNUTLS_DO( gnutls_priority_init(
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254 &fd_g_config->cnf_sec_data.prio_cache,
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255 GNUTLS_DEFAULT_PRIORITY,
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256 &err_pos),
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257 { TRACE_DEBUG(INFO, "Error in priority string at position : %s", err_pos); return EINVAL; } );
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258 }
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259 if (! fd_g_config->cnf_sec_data.dh_bits) {
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260 if (TRACE_BOOL(INFO)) {
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261 fd_log_debug("Generating Diffie-Hellman parameters of size %d (this takes a few seconds)... ", GNUTLS_DEFAULT_DHBITS);
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262 }
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263 CHECK_GNUTLS_DO( gnutls_dh_params_generate2(
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264 fd_g_config->cnf_sec_data.dh_cache,
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265 GNUTLS_DEFAULT_DHBITS),
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266 { TRACE_DEBUG(INFO, "Error in DH bits value : %d", GNUTLS_DEFAULT_DHBITS); return EINVAL; } );
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267 if (TRACE_BOOL(INFO)) {
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268 fd_log_debug("Done!\n");
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269 }
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270 }
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271
8
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272 return 0;
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273 }
23
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274
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275 /* Add an endpoint information in a list */
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276 int fd_ep_add_merge( struct fd_list * list, sSA * sa, socklen_t sl, int conf, int disc, int adv, int ll )
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277 {
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278 struct fd_endpoint * ep;
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279 struct fd_list * li;
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280 int cmp = -1;
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281
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282 TRACE_ENTRY("%p %p %u %i %i %i %i", list, sa, sl, conf, disc, adv, ll);
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283 CHECK_PARAMS( list && sa && (sl <= sizeof(sSS)) && (conf || disc || adv || ll) );
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284
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285 /* Search place in the list */
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286 for (li = list->next; li != list; li = li->next) {
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287 ep = (struct fd_endpoint *)li;
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288
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289 cmp = memcmp(&ep->ss, sa, sl);
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290 if (cmp >= 0)
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291 break;
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292 }
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293
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294 if (cmp) {
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295 /* new item to be added */
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296 CHECK_MALLOC( ep = malloc(sizeof(struct fd_endpoint)) );
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297 memset(ep, 0, sizeof(struct fd_endpoint));
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298 fd_list_init(&ep->chain, NULL);
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299 memcpy(&ep->ss, sa, sl);
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300
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301 /* Insert in the list */
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302 fd_list_insert_before(li, &ep->chain);
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303 }
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304
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305 /* Merge the flags */
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306 ep->meta.conf = conf || ep->meta.conf;
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307 ep->meta.disc = disc || ep->meta.disc;
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308 ep->meta.adv = adv || ep->meta.adv;
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309 ep->meta.ll = ll || ep->meta.ll;
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310
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311 return 0;
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312 }
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313
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