FreeCalypso > hg > themwi-system-sw
annotate sip-in/readconf.c @ 80:a9944b66dcc5
sip-in: handle incoming BYE
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 20 Sep 2022 19:35:34 -0800 |
parents | 709b78a4ebf0 |
children | e64d4d44025d |
rev | line source |
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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; |
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20 unsigned cfg_retrans_timeout = 500; |
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21 unsigned cfg_retrans_count = 10; |
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22 |
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23 static char config_file_pathname[] = "/var/gsm/themwi-sip-in.cfg"; |
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24 |
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25 struct parse_state { |
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26 int lineno; |
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27 int set_mask; |
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28 }; |
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29 |
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30 static void |
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31 handle_ip(st, kw, var, arg) |
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32 struct parse_state *st; |
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33 char *kw, *arg; |
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34 struct in_addr *var; |
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35 { |
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36 var->s_addr = inet_addr(arg); |
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37 if (var->s_addr == INADDR_NONE) { |
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38 fprintf(stderr, |
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39 "%s line %d: invalid IP address argument \"%s\"\n", |
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40 config_file_pathname, st->lineno, arg); |
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41 exit(1); |
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42 } |
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43 } |
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44 |
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45 static void |
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46 handle_num(st, kw, var, arg) |
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47 struct parse_state *st; |
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48 char *kw, *arg; |
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49 unsigned *var; |
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50 { |
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51 char *endp; |
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52 |
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53 *var = strtoul(arg, &endp, 10); |
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54 if (*endp) { |
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55 fprintf(stderr, "%s line %d: invalid numeric argument \"%s\"\n", |
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56 config_file_pathname, st->lineno, arg); |
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57 exit(1); |
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58 } |
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59 } |
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60 |
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61 static void |
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62 handle_bool(st, kw, var, arg) |
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63 struct parse_state *st; |
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64 char *kw, *arg; |
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65 int *var; |
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66 { |
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67 if (!strcmp(arg, "true") || !strcmp(arg, "on") || !strcmp(arg, "yes") |
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68 || !strcmp(arg, "1")) { |
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69 *var = 1; |
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70 return; |
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71 } |
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72 if (!strcmp(arg, "false") || !strcmp(arg, "off") || !strcmp(arg, "no") |
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73 || !strcmp(arg, "0")) { |
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74 *var = 0; |
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75 return; |
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76 } |
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77 fprintf(stderr, "%s line %d: invalid boolean argument \"%s\"\n", |
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78 config_file_pathname, st->lineno, arg); |
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79 exit(1); |
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80 } |
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81 |
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82 static void |
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83 process_line(st, line) |
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84 struct parse_state *st; |
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85 char *line; |
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86 { |
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87 char *cp, *np, *arg; |
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88 void (*handler)(), *var; |
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89 int set_id; |
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90 |
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91 if (!index(line, '\n')) { |
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92 fprintf(stderr, "%s line %d: too long or missing newline\n", |
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93 config_file_pathname, st->lineno); |
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94 exit(1); |
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95 } |
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96 for (cp = line; isspace(*cp); cp++) |
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97 ; |
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98 if (*cp == '\0' || *cp == '#') |
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99 return; |
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100 for (np = cp; *cp && !isspace(*cp); cp++) |
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101 ; |
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102 if (*cp) |
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103 *cp++ = '\0'; |
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104 if (!strcmp(np, "bind-ip")) { |
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105 handler = handle_ip; |
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106 var = &sip_bind_ip; |
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107 set_id = 1; |
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108 } else if (!strcmp(np, "bind-port")) { |
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109 handler = handle_num; |
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110 var = &sip_bind_port; |
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111 set_id = 2; |
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112 } else if (!strcmp(np, "use-100rel")) { |
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113 handler = handle_bool; |
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114 var = &cfg_use_100rel; |
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115 set_id = 0; |
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116 } else { |
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117 fprintf(stderr, "%s line %d: non-understood keyword \"%s\"\n", |
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118 config_file_pathname, st->lineno, np); |
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119 exit(1); |
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120 } |
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121 if (st->set_mask & set_id) { |
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122 fprintf(stderr, "%s line %d: duplicate %s setting\n", |
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123 config_file_pathname, st->lineno, np); |
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124 exit(1); |
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125 } |
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126 while (isspace(*cp)) |
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127 cp++; |
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128 if (*cp == '\0' || *cp == '#') { |
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129 inv_syntax: fprintf(stderr, |
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130 "%s line %d: %s setting requires one argument\n", |
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131 config_file_pathname, st->lineno, np); |
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132 exit(1); |
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133 } |
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134 for (arg = cp; *cp && !isspace(*cp); cp++) |
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135 ; |
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136 if (*cp) |
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137 *cp++ = '\0'; |
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138 while (isspace(*cp)) |
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139 cp++; |
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140 if (*cp != '\0' && *cp != '#') |
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141 goto inv_syntax; |
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142 handler(st, np, var, arg); |
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143 st->set_mask |= set_id; |
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144 } |
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145 |
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146 read_config_file() |
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147 { |
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148 FILE *inf; |
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149 struct parse_state pst; |
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150 char linebuf[256]; |
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151 |
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152 inf = fopen(config_file_pathname, "r"); |
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153 if (!inf) { |
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154 perror(config_file_pathname); |
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155 exit(1); |
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156 } |
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157 pst.set_mask = 0; |
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158 for (pst.lineno = 1; fgets(linebuf, sizeof linebuf, inf); pst.lineno++) |
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159 process_line(&pst, linebuf); |
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160 fclose(inf); |
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161 if (pst.set_mask != 3) { |
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162 fprintf(stderr, "error: %s did not set all required settings\n", |
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163 config_file_pathname); |
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164 exit(1); |
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165 } |
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166 } |