FreeCalypso > hg > themwi-system-sw

annotate sip-in/readconf.c @ 152:7176dc850d7a

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sip-in hold/retr error handling: simply send BYE Because we know that the SIP state is CONNECTED at the time of any such error event, we can call initiate_bye() instead of disconnect_sip(), and thereby get rid of struct gsm_mncc_cause which will never be used in this scenario anyway.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 11 Oct 2022 16:11:21 -0800
parents 7e04d28fae8b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
47
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diff changeset
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;
124
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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
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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;
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23 unsigned max_forwards = 70;
109
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24 unsigned sip_linger_acked = 5;
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25 unsigned sip_linger_gotbye = 30;
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26 unsigned sip_linger_error = 180;
47
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27
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28 static char config_file_pathname[] = "/var/gsm/themwi-sip-in.cfg";
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29
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30 struct parse_state {
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31 int lineno;
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32 int set_mask;
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33 };
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34
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35 static void
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36 require_one_arg(st, kw, arg)
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37 struct parse_state *st;
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38 char *kw, *arg;
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39 {
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40 char *cp;
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41
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
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42 if (*arg == '\0' || *arg == '#') {
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43 inv_syntax: fprintf(stderr,
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44 "%s line %d: %s setting requires one argument\n",
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
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45 config_file_pathname, st->lineno, kw);
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46 exit(1);
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47 }
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48 for (cp = arg; *cp && !isspace(*cp); cp++)
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49 ;
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
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50 if (*cp)
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51 *cp++ = '\0';
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52 while (isspace(*cp))
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53 cp++;
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54 if (*cp != '\0' && *cp != '#')
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55 goto inv_syntax;
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56 }
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57
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58 static void
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59 handle_ip(st, kw, arg, var)
47
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60 struct parse_state *st;
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61 char *kw, *arg;
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62 struct in_addr *var;
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63 {
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64 require_one_arg(st, kw, arg);
47
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65 var->s_addr = inet_addr(arg);
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66 if (var->s_addr == INADDR_NONE) {
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67 fprintf(stderr,
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68 "%s line %d: invalid IP address argument \"%s\"\n",
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69 config_file_pathname, st->lineno, arg);
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70 exit(1);
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71 }
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72 }
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73
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74 static void
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75 handle_num(st, kw, arg, var)
47
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76 struct parse_state *st;
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77 char *kw, *arg;
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78 unsigned *var;
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79 {
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80 char *endp;
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81
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82 require_one_arg(st, kw, arg);
47
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83 *var = strtoul(arg, &endp, 10);
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84 if (*endp) {
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85 fprintf(stderr, "%s line %d: invalid numeric argument \"%s\"\n",
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86 config_file_pathname, st->lineno, arg);
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87 exit(1);
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88 }
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89 }
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90
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91 static void
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92 handle_bool(st, kw, arg, var)
47
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93 struct parse_state *st;
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94 char *kw, *arg;
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95 int *var;
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96 {
89
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97 require_one_arg(st, kw, arg);
47
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98 if (!strcmp(arg, "true") || !strcmp(arg, "on") || !strcmp(arg, "yes")
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99 || !strcmp(arg, "1")) {
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100 *var = 1;
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101 return;
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102 }
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103 if (!strcmp(arg, "false") || !strcmp(arg, "off") || !strcmp(arg, "no")
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104 || !strcmp(arg, "0")) {
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105 *var = 0;
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106 return;
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107 }
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108 fprintf(stderr, "%s line %d: invalid boolean argument \"%s\"\n",
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109 config_file_pathname, st->lineno, arg);
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110 exit(1);
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111 }
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112
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113 static void
91
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114 handle_retrans_conf(st, kw, arg)
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115 struct parse_state *st;
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116 char *kw, *arg;
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117 {
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118 char *cp = arg;
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119
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120 if (!isdigit(*cp)) {
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121 inv: fprintf(stderr,
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122 "%s line %d: %s setting requires two numeric arguments\n",
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123 config_file_pathname, st->lineno, kw);
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
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124 exit(1);
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
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125 }
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
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126 cfg_retrans_timeout = strtoul(cp, &cp, 10);
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parents: 90
diff changeset
127 while (isspace(*cp))
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128 cp++;
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129 if (!isdigit(*cp))
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130 goto inv;
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131 cfg_retrans_count = strtoul(cp, &cp, 10);
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parents: 90
diff changeset
132 while (isspace(*cp))
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
133 cp++;
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
134 if (*cp != '\0' && *cp != '#')
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
135 goto inv;
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
136 }
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
137
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
138 static void
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 process_line(st, line)
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 struct parse_state *st;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 char *line;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 {
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
143 char *cp, *kw;
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 void (*handler)(), *var;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 int set_id;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 if (!index(line, '\n')) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 fprintf(stderr, "%s line %d: too long or missing newline\n",
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 config_file_pathname, st->lineno);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 exit(1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 for (cp = line; isspace(*cp); cp++)
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 ;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 if (*cp == '\0' || *cp == '#')
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 return;
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
156 for (kw = cp; *cp && !isspace(*cp); cp++)
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 ;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 if (*cp)
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 *cp++ = '\0';
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
160 if (!strcmp(kw, "bind-ip")) {
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 handler = handle_ip;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 var = &sip_bind_ip;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 set_id = 1;
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
164 } else if (!strcmp(kw, "bind-port")) {
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 handler = handle_num;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 var = &sip_bind_port;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 set_id = 2;
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
168 } else if (!strcmp(kw, "use-100rel")) {
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 handler = handle_bool;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 var = &cfg_use_100rel;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 set_id = 0;
104
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 } 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
173 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
174 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
175 set_id = 0;
91
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
176 } else if (!strcmp(kw, "sip-udp-retrans")) {
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
177 handler = handle_retrans_conf;
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
178 var = (void *) 0;
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
179 set_id = 0;
109
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
180 } else if (!strcmp(kw, "sip-linger-acked")) {
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
181 handler = handle_num;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
182 var = &sip_linger_acked;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
183 set_id = 0;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
184 } else if (!strcmp(kw, "sip-linger-got-bye")) {
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
185 handler = handle_num;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
186 var = &sip_linger_gotbye;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
187 set_id = 0;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
188 } else if (!strcmp(kw, "sip-linger-error")) {
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
189 handler = handle_num;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
190 var = &sip_linger_error;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
191 set_id = 0;
92
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
192 } else if (!strcmp(kw, "max-forwards")) {
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
193 handler = &handle_num;
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
194 var = &max_forwards;
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
195 set_id = 0;
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 } else {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 fprintf(stderr, "%s line %d: non-understood keyword \"%s\"\n",
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
198 config_file_pathname, st->lineno, kw);
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 exit(1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 if (st->set_mask & set_id) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202 fprintf(stderr, "%s line %d: duplicate %s setting\n",
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
203 config_file_pathname, st->lineno, kw);
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 exit(1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 while (isspace(*cp))
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 cp++;
90
736c2d68595f sip-in/readconf.c: second step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 89
diff changeset
208 handler(st, kw, cp, var);
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 st->set_mask |= set_id;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 read_config_file()
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 FILE *inf;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 struct parse_state pst;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 char linebuf[256];
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
218 inf = fopen(config_file_pathname, "r");
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219 if (!inf) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220 perror(config_file_pathname);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 exit(1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223 pst.set_mask = 0;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224 for (pst.lineno = 1; fgets(linebuf, sizeof linebuf, inf); pst.lineno++)
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
225 process_line(&pst, linebuf);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
226 fclose(inf);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227 if (pst.set_mask != 3) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
228 fprintf(stderr, "error: %s did not set all required settings\n",
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229 config_file_pathname);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230 exit(1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232 }