FreeCalypso > hg > themwi-system-sw

annotate sip-out/readconf.c @ 156:0bacca1f2f7b

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sip-out: handle all INVITE responses, except errors
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 12 Oct 2022 07:13:55 -0800
parents e54b0a9e322f
children
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-out.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 unsigned cfg_retrans_timeout = 500;
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20 unsigned cfg_retrans_count = 10;
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21 unsigned max_forwards = 70;
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22 unsigned sip_linger_timeout = 10;
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23 unsigned sip_linger_invite_err = 10;
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24 unsigned sip_linger_gotbye = 30;
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25 unsigned sip_linger_bye_out_ok = 5;
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26 unsigned sip_linger_bye_out_err = 180;
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27 unsigned sip_linger_response_err = 180;
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28 int block_1900_numbers = 1;
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29
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30 static char config_file_pathname[] = "/var/gsm/themwi-sip-out.cfg";
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31
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32 struct parse_state {
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33 int lineno;
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34 int set_mask;
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35 };
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36
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37 static void
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38 require_one_arg(st, kw, arg)
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39 struct parse_state *st;
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40 char *kw, *arg;
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41 {
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42 char *cp;
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43
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44 if (*arg == '\0' || *arg == '#') {
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45 inv_syntax: fprintf(stderr,
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46 "%s line %d: %s setting requires one argument\n",
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47 config_file_pathname, st->lineno, kw);
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48 exit(1);
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49 }
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50 for (cp = arg; *cp && !isspace(*cp); cp++)
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51 ;
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52 if (*cp)
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53 *cp++ = '\0';
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54 while (isspace(*cp))
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55 cp++;
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56 if (*cp != '\0' && *cp != '#')
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57 goto inv_syntax;
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58 }
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60 static void
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61 handle_ip(st, kw, arg, var)
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62 struct parse_state *st;
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63 char *kw, *arg;
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64 struct in_addr *var;
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65 {
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66 require_one_arg(st, kw, arg);
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67 var->s_addr = inet_addr(arg);
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68 if (var->s_addr == INADDR_NONE) {
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69 fprintf(stderr,
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70 "%s line %d: invalid IP address argument \"%s\"\n",
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71 config_file_pathname, st->lineno, arg);
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72 exit(1);
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73 }
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74 }
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75
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76 static void
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77 handle_num(st, kw, arg, var)
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78 struct parse_state *st;
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79 char *kw, *arg;
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80 unsigned *var;
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81 {
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82 char *endp;
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83
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84 require_one_arg(st, kw, arg);
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85 *var = strtoul(arg, &endp, 10);
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86 if (*endp) {
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87 fprintf(stderr, "%s line %d: invalid numeric argument \"%s\"\n",
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88 config_file_pathname, st->lineno, arg);
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89 exit(1);
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90 }
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91 }
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92
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93 static void
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94 handle_bool(st, kw, arg, var)
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95 struct parse_state *st;
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96 char *kw, *arg;
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97 int *var;
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98 {
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99 require_one_arg(st, kw, arg);
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100 if (!strcmp(arg, "true") || !strcmp(arg, "on") || !strcmp(arg, "yes")
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101 || !strcmp(arg, "1")) {
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102 *var = 1;
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103 return;
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104 }
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105 if (!strcmp(arg, "false") || !strcmp(arg, "off") || !strcmp(arg, "no")
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106 || !strcmp(arg, "0")) {
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107 *var = 0;
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108 return;
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109 }
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110 fprintf(stderr, "%s line %d: invalid boolean argument \"%s\"\n",
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111 config_file_pathname, st->lineno, arg);
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112 exit(1);
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113 }
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114
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115 static void
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116 handle_retrans_conf(st, kw, arg)
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117 struct parse_state *st;
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118 char *kw, *arg;
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119 {
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120 char *cp = arg;
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121
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122 if (!isdigit(*cp)) {
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123 inv: fprintf(stderr,
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124 "%s line %d: %s setting requires two numeric arguments\n",
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125 config_file_pathname, st->lineno, kw);
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126 exit(1);
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127 }
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128 cfg_retrans_timeout = strtoul(cp, &cp, 10);
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129 while (isspace(*cp))
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130 cp++;
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131 if (!isdigit(*cp))
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132 goto inv;
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
133 cfg_retrans_count = strtoul(cp, &cp, 10);
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
134 while (isspace(*cp))
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
135 cp++;
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
136 if (*cp != '\0' && *cp != '#')
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
137 goto inv;
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
138 }
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
139
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
140 static void
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 process_line(st, line)
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 struct parse_state *st;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 char *line;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 {
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
145 char *cp, *kw;
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 void (*handler)(), *var;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 int set_id;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 if (!index(line, '\n')) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 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
151 config_file_pathname, st->lineno);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 exit(1);
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 for (cp = line; isspace(*cp); cp++)
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 ;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 if (*cp == '\0' || *cp == '#')
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 return;
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
158 for (kw = cp; *cp && !isspace(*cp); cp++)
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 ;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 if (*cp)
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 *cp++ = '\0';
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
162 if (!strcmp(kw, "bind-ip")) {
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 handler = handle_ip;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 var = &sip_bind_ip;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 set_id = 1;
89
e64d4d44025d sip-in/readconf.c: first step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 68
diff changeset
166 } else if (!strcmp(kw, "bind-port")) {
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 handler = handle_num;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 var = &sip_bind_port;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 set_id = 2;
91
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
170 } 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
171 handler = handle_retrans_conf;
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
172 var = (void *) 0;
fd23e2747b45 sip-in: add sip-udp-retrans configuration setting
Mychaela Falconia <falcon@freecalypso.org>
parents: 90
diff changeset
173 set_id = 0;
154
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
174 } else if (!strcmp(kw, "sip-linger-timeout")) {
109
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
175 handler = handle_num;
154
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
176 var = &sip_linger_timeout;
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
177 set_id = 0;
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
178 } else if (!strcmp(kw, "sip-linger-invite-error")) {
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
179 handler = handle_num;
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
180 var = &sip_linger_invite_err;
109
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
181 set_id = 0;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
182 } 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
183 handler = handle_num;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
184 var = &sip_linger_gotbye;
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
185 set_id = 0;
154
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
186 } else if (!strcmp(kw, "sip-linger-bye-out-ok")) {
109
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
187 handler = handle_num;
154
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
188 var = &sip_linger_bye_out_ok;
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
189 set_id = 0;
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
190 } else if (!strcmp(kw, "sip-linger-bye-out-error")) {
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
191 handler = handle_num;
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
192 var = &sip_linger_bye_out_err;
109
9b87894704eb sip-in: first step toward final call clearing
Mychaela Falconia <falcon@freecalypso.org>
parents: 108
diff changeset
193 set_id = 0;
156
0bacca1f2f7b sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents: 154
diff changeset
194 } else if (!strcmp(kw, "sip-linger-response-error")) {
0bacca1f2f7b sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents: 154
diff changeset
195 handler = handle_num;
0bacca1f2f7b sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents: 154
diff changeset
196 var = &sip_linger_response_err;
0bacca1f2f7b sip-out: handle all INVITE responses, except errors
Mychaela Falconia <falcon@freecalypso.org>
parents: 154
diff changeset
197 set_id = 0;
92
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
198 } else if (!strcmp(kw, "max-forwards")) {
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
199 handler = &handle_num;
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
200 var = &max_forwards;
a9137bdb6047 sip-in: make BYE Max-Forwards configurable
Mychaela Falconia <falcon@freecalypso.org>
parents: 91
diff changeset
201 set_id = 0;
154
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
202 } else if (!strcmp(kw, "block-1900")) {
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
203 handler = handle_bool;
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
204 var = &block_1900_numbers;
e54b0a9e322f beginning of themwi-sip-out
Mychaela Falconia <falcon@freecalypso.org>
parents: 124
diff changeset
205 set_id = 0;
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 } else {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 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
208 config_file_pathname, st->lineno, kw);
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 exit(1);
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 if (st->set_mask & set_id) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 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
213 config_file_pathname, st->lineno, kw);
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 exit(1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 while (isspace(*cp))
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217 cp++;
90
736c2d68595f sip-in/readconf.c: second step toward non-trivial settings
Mychaela Falconia <falcon@freecalypso.org>
parents: 89
diff changeset
218 handler(st, kw, cp, var);
47
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219 st->set_mask |= set_id;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222 read_config_file()
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223 {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224 FILE *inf;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
225 struct parse_state pst;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
226 char linebuf[256];
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
228 inf = fopen(config_file_pathname, "r");
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229 if (!inf) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230 perror(config_file_pathname);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 exit(1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
233 pst.set_mask = 0;
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
234 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
235 process_line(&pst, linebuf);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236 fclose(inf);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
237 if (pst.set_mask != 3) {
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
238 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
239 config_file_pathname);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
240 exit(1);
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
241 }
62f39c7cee15 themwi-sip-in skeleton started
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
242 }