FreeCalypso > hg > themwi-system-sw

annotate sip-in/readconf.c @ 105:9213ec8b434b

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sip-in: handle themwi-mncc shutdown without terminating
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 27 Sep 2022 23:00:52 -0800
parents ce3b1db7d1d7
children 0d6435808bcd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
47
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1 /*
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2 * In this module we implement the reading of /var/gsm/themwi-sip-in.cfg:
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3 * the main settings are bind-ip and bind-port, but we also have some
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4 * optional config settings.
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5 */
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6
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7 #include <sys/types.h>
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8 #include <sys/socket.h>
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9 #include <netinet/in.h>
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10 #include <arpa/inet.h>
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11 #include <ctype.h>
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12 #include <stdio.h>
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13 #include <stdlib.h>
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14 #include <string.h>
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15 #include <strings.h>
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16
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17 struct in_addr sip_bind_ip;
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18 unsigned sip_bind_port;
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19 int cfg_use_100rel;
104
ce3b1db7d1d7 sip-in: force-pcma-codec config option to use PCMA when both are offered
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20 int cfg_force_pcma;
68
709b78a4ebf0 sip-in: implement retransmission of INVITE responses
Mychaela Falconia <falcon@freecalypso.org>
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21 unsigned cfg_retrans_timeout = 500;
709b78a4ebf0 sip-in: implement retransmission of INVITE responses
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22 unsigned cfg_retrans_count = 10;
92
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
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23 unsigned max_forwards = 70;
47
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24
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25 static char config_file_pathname[] = "/var/gsm/themwi-sip-in.cfg";
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26
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27 struct parse_state {
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28 int lineno;
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29 int set_mask;
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30 };
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31
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32 static void
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33 require_one_arg(st, kw, arg)
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34 struct parse_state *st;
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35 char *kw, *arg;
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36 {
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37 char *cp;
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38
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39 if (*arg == '\0' || *arg == '#') {
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40 inv_syntax: fprintf(stderr,
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41 "%s line %d: %s setting requires one argument\n",
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42 config_file_pathname, st->lineno, kw);
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43 exit(1);
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44 }
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45 for (cp = arg; *cp && !isspace(*cp); cp++)
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46 ;
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47 if (*cp)
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48 *cp++ = '\0';
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49 while (isspace(*cp))
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50 cp++;
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51 if (*cp != '\0' && *cp != '#')
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52 goto inv_syntax;
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53 }
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54
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55 static void
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56 handle_ip(st, kw, arg, var)
47
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57 struct parse_state *st;
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58 char *kw, *arg;
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59 struct in_addr *var;
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60 {
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61 require_one_arg(st, kw, arg);
47
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62 var->s_addr = inet_addr(arg);
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63 if (var->s_addr == INADDR_NONE) {
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64 fprintf(stderr,
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65 "%s line %d: invalid IP address argument \"%s\"\n",
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66 config_file_pathname, st->lineno, arg);
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67 exit(1);
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68 }
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69 }
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70
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71 static void
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72 handle_num(st, kw, arg, var)
47
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73 struct parse_state *st;
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74 char *kw, *arg;
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75 unsigned *var;
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76 {
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77 char *endp;
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78
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79 require_one_arg(st, kw, arg);
47
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80 *var = strtoul(arg, &endp, 10);
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81 if (*endp) {
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82 fprintf(stderr, "%s line %d: invalid numeric argument \"%s\"\n",
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83 config_file_pathname, st->lineno, arg);
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84 exit(1);
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85 }
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86 }
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87
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88 static void
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89 handle_bool(st, kw, arg, var)
47
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90 struct parse_state *st;
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91 char *kw, *arg;
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92 int *var;
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93 {
89
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94 require_one_arg(st, kw, arg);
47
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95 if (!strcmp(arg, "true") || !strcmp(arg, "on") || !strcmp(arg, "yes")
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96 || !strcmp(arg, "1")) {
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97 *var = 1;
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98 return;
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99 }
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100 if (!strcmp(arg, "false") || !strcmp(arg, "off") || !strcmp(arg, "no")
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101 || !strcmp(arg, "0")) {
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102 *var = 0;
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103 return;
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104 }
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105 fprintf(stderr, "%s line %d: invalid boolean argument \"%s\"\n",
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106 config_file_pathname, st->lineno, arg);
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107 exit(1);
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108 }
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109
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110 static void
91
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111 handle_retrans_conf(st, kw, arg)
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112 struct parse_state *st;
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113 char *kw, *arg;
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114 {
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115 char *cp = arg;
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116
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117 if (!isdigit(*cp)) {
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118 inv: fprintf(stderr,
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119 "%s line %d: %s setting requires two numeric arguments\n",
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120 config_file_pathname, st->lineno, kw);
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121 exit(1);
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122 }
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123 cfg_retrans_timeout = strtoul(cp, &cp, 10);
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parents: 90
diff changeset
124 while (isspace(*cp))
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125 cp++;
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126 if (!isdigit(*cp))
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127 goto inv;
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128 cfg_retrans_count = strtoul(cp, &cp, 10);
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diff changeset
129 while (isspace(*cp))
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130 cp++;
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131 if (*cp != '\0' && *cp != '#')
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parents: 90
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132 goto inv;
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Mychaela Falconia <falcon@freecalypso.org>
parents: 90
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133 }
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parents: 90
diff changeset
134
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parents: 90
diff changeset
135 static void
47
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 process_line(st, line)
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137 struct parse_state *st;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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138 char *line;
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139 {
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e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
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diff changeset
140 char *cp, *kw;
47
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parents:
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141 void (*handler)(), *var;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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142 int set_id;
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143
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144 if (!index(line, '\n')) {
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145 fprintf(stderr, "%s line %d: too long or missing newline\n",
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146 config_file_pathname, st->lineno);
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147 exit(1);
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148 }
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149 for (cp = line; isspace(*cp); cp++)
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parents:
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150 ;
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parents:
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151 if (*cp == '\0' || *cp == '#')
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 return;
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diff changeset
153 for (kw = cp; *cp && !isspace(*cp); cp++)
47
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154 ;
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155 if (*cp)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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156 *cp++ = '\0';
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parents: 68
diff changeset
157 if (!strcmp(kw, "bind-ip")) {
47
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158 handler = handle_ip;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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159 var = &sip_bind_ip;
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Mychaela Falconia <falcon@freecalypso.org>
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160 set_id = 1;
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parents: 68
diff changeset
161 } else if (!strcmp(kw, "bind-port")) {
47
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parents:
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162 handler = handle_num;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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163 var = &sip_bind_port;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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164 set_id = 2;
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diff changeset
165 } else if (!strcmp(kw, "use-100rel")) {
47
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Mychaela Falconia <falcon@freecalypso.org>
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166 handler = handle_bool;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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167 var = &cfg_use_100rel;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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168 set_id = 0;
104
ce3b1db7d1d7 sip-in: force-pcma-codec config option to use PCMA when both are offered
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parents: 92
diff changeset
169 } else if (!strcmp(kw, "force-pcma-codec")) {
ce3b1db7d1d7 sip-in: force-pcma-codec config option to use PCMA when both are offered
Mychaela Falconia <falcon@freecalypso.org>
parents: 92
diff changeset
170 handler = handle_bool;
ce3b1db7d1d7 sip-in: force-pcma-codec config option to use PCMA when both are offered
Mychaela Falconia <falcon@freecalypso.org>
parents: 92
diff changeset
171 var = &cfg_force_pcma;
ce3b1db7d1d7 sip-in: force-pcma-codec config option to use PCMA when both are offered
Mychaela Falconia <falcon@freecalypso.org>
parents: 92
diff changeset
172 set_id = 0;
91
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
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parents: 90
diff changeset
173 } else if (!strcmp(kw, "sip-udp-retrans")) {
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parents: 90
diff changeset
174 handler = handle_retrans_conf;
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parents: 90
diff changeset
175 var = (void *) 0;
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parents: 90
diff changeset
176 set_id = 0;
92
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
177 } else if (!strcmp(kw, "max-forwards")) {
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
178 handler = &handle_num;
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
179 var = &max_forwards;
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
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parents: 91
diff changeset
180 set_id = 0;
47
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parents:
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181 } else {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 fprintf(stderr, "%s line %d: non-understood keyword \"%s\"\n",
89
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Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
183 config_file_pathname, st->lineno, kw);
47
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 if (st->set_mask & set_id) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 fprintf(stderr, "%s line %d: duplicate %s setting\n",
89
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parents: 68
diff changeset
188 config_file_pathname, st->lineno, kw);
47
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parents:
diff changeset
189 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 while (isspace(*cp))
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 cp++;
90
736c2d68595f sip-in/readconf.c: second step toward non-trivial settings
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parents: 89
diff changeset
193 handler(st, kw, cp, var);
47
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 st->set_mask |= set_id;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 read_config_file()
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 FILE *inf;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 struct parse_state pst;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 char linebuf[256];
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 inf = fopen(config_file_pathname, "r");
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 if (!inf) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205 perror(config_file_pathname);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 pst.set_mask = 0;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 for (pst.lineno = 1; fgets(linebuf, sizeof linebuf, inf); pst.lineno++)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 process_line(&pst, linebuf);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 fclose(inf);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 if (pst.set_mask != 3) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 fprintf(stderr, "error: %s did not set all required settings\n",
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 config_file_pathname);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217 }