FreeCalypso > hg > themwi-system-sw
annotate sip-in/readconf.c @ 123:a36b731bfef9
sip-manual-out: implement sending BYE and CANCEL
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 29 Sep 2022 17:21:11 -0800 |
parents | 9b87894704eb |
children | 7e04d28fae8b |
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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 = 1; |
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20 int cfg_force_pcma; |
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21 unsigned cfg_retrans_timeout = 500; |
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22 unsigned cfg_retrans_count = 10; |
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23 unsigned max_forwards = 70; |
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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; |
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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 |
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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", |
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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 ; |
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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) |
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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); |
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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) |
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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); |
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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) |
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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 { |
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97 require_one_arg(st, kw, arg); |
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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 |
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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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diff
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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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diff
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|
123 config_file_pathname, st->lineno, kw); |
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|
124 exit(1); |
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|
125 } |
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|
126 cfg_retrans_timeout = strtoul(cp, &cp, 10); |
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|
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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|
132 while (isspace(*cp)) |
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|
133 cp++; |
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|
134 if (*cp != '\0' && *cp != '#') |
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|
135 goto inv; |
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|
136 } |
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|
137 |
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|
138 static void |
47
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139 process_line(st, line) |
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140 struct parse_state *st; |
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141 char *line; |
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142 { |
89
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143 char *cp, *kw; |
47
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144 void (*handler)(), *var; |
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145 int set_id; |
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146 |
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147 if (!index(line, '\n')) { |
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148 fprintf(stderr, "%s line %d: too long or missing newline\n", |
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|
149 config_file_pathname, st->lineno); |
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150 exit(1); |
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|
151 } |
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152 for (cp = line; isspace(*cp); cp++) |
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153 ; |
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154 if (*cp == '\0' || *cp == '#') |
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|
155 return; |
89
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|
156 for (kw = cp; *cp && !isspace(*cp); cp++) |
47
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|
157 ; |
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|
158 if (*cp) |
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|
159 *cp++ = '\0'; |
89
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|
160 if (!strcmp(kw, "bind-ip")) { |
47
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|
161 handler = handle_ip; |
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|
162 var = &sip_bind_ip; |
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163 set_id = 1; |
89
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|
164 } else if (!strcmp(kw, "bind-port")) { |
47
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|
165 handler = handle_num; |
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|
166 var = &sip_bind_port; |
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|
167 set_id = 2; |
89
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diff
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|
168 } else if (!strcmp(kw, "use-100rel")) { |
47
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|
169 handler = handle_bool; |
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|
170 var = &cfg_use_100rel; |
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|
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>
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92
diff
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|
172 } else if (!strcmp(kw, "force-pcma-codec")) { |
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92
diff
changeset
|
173 handler = handle_bool; |
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92
diff
changeset
|
174 var = &cfg_force_pcma; |
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92
diff
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|
175 set_id = 0; |
91
fd23e2747b45
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90
diff
changeset
|
176 } else if (!strcmp(kw, "sip-udp-retrans")) { |
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90
diff
changeset
|
177 handler = handle_retrans_conf; |
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diff
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|
178 var = (void *) 0; |
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diff
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|
179 set_id = 0; |
109
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108
diff
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|
180 } else if (!strcmp(kw, "sip-linger-acked")) { |
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108
diff
changeset
|
181 handler = handle_num; |
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108
diff
changeset
|
182 var = &sip_linger_acked; |
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108
diff
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|
183 set_id = 0; |
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108
diff
changeset
|
184 } else if (!strcmp(kw, "sip-linger-got-bye")) { |
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108
diff
changeset
|
185 handler = handle_num; |
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108
diff
changeset
|
186 var = &sip_linger_gotbye; |
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108
diff
changeset
|
187 set_id = 0; |
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108
diff
changeset
|
188 } else if (!strcmp(kw, "sip-linger-error")) { |
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108
diff
changeset
|
189 handler = handle_num; |
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108
diff
changeset
|
190 var = &sip_linger_error; |
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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; |
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Mychaela Falconia <falcon@freecalypso.org>
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91
diff
changeset
|
194 var = &max_forwards; |
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91
diff
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|
195 set_id = 0; |
47
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|
196 } else { |
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|
197 fprintf(stderr, "%s line %d: non-understood keyword \"%s\"\n", |
89
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Mychaela Falconia <falcon@freecalypso.org>
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68
diff
changeset
|
198 config_file_pathname, st->lineno, kw); |
47
62f39c7cee15
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|
199 exit(1); |
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|
200 } |
62f39c7cee15
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|
201 if (st->set_mask & set_id) { |
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|
202 fprintf(stderr, "%s line %d: duplicate %s setting\n", |
89
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parents:
68
diff
changeset
|
203 config_file_pathname, st->lineno, kw); |
47
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|
204 exit(1); |
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|
205 } |
62f39c7cee15
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|
206 while (isspace(*cp)) |
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diff
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|
207 cp++; |
90
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Mychaela Falconia <falcon@freecalypso.org>
parents:
89
diff
changeset
|
208 handler(st, kw, cp, var); |
47
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|
209 st->set_mask |= set_id; |
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|
210 } |
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|
211 |
62f39c7cee15
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|
212 read_config_file() |
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|
213 { |
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|
214 FILE *inf; |
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diff
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|
215 struct parse_state pst; |
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|
216 char linebuf[256]; |
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|
217 |
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|
218 inf = fopen(config_file_pathname, "r"); |
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|
219 if (!inf) { |
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|
220 perror(config_file_pathname); |
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|
221 exit(1); |
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|
222 } |
62f39c7cee15
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|
223 pst.set_mask = 0; |
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|
224 for (pst.lineno = 1; fgets(linebuf, sizeof linebuf, inf); pst.lineno++) |
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|
225 process_line(&pst, linebuf); |
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|
226 fclose(inf); |
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|
227 if (pst.set_mask != 3) { |
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|
228 fprintf(stderr, "error: %s did not set all required settings\n", |
62f39c7cee15
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|
229 config_file_pathname); |
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|
230 exit(1); |
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diff
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|
231 } |
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|
232 } |