FreeCalypso > hg > themwi-system-sw

comparison sip-out/readconf.c @ 154:e54b0a9e322f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
beginning of themwi-sip-out
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 11 Oct 2022 23:04:01 -0800
parents sip-in/readconf.c@7e04d28fae8b
children 0bacca1f2f7b
comparison
equal deleted inserted replaced
153:99fd4ae573ae 154:e54b0a9e322f
1 /*
2 * In this module we implement the reading of /var/gsm/themwi-sip-out.cfg:
3 * the main settings are bind-ip and bind-port, but we also have some
4 * optional config settings.
5 */
6
7 #include <sys/types.h>
8 #include <sys/socket.h>
9 #include <netinet/in.h>
10 #include <arpa/inet.h>
11 #include <ctype.h>
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <strings.h>
16
17 struct in_addr sip_bind_ip;
18 unsigned sip_bind_port;
19 unsigned cfg_retrans_timeout = 500;
20 unsigned cfg_retrans_count = 10;
21 unsigned max_forwards = 70;
22 unsigned sip_linger_timeout = 10;
23 unsigned sip_linger_invite_err = 10;
24 unsigned sip_linger_gotbye = 30;
25 unsigned sip_linger_bye_out_ok = 5;
26 unsigned sip_linger_bye_out_err = 180;
27 int block_1900_numbers = 1;
28
29 static char config_file_pathname[] = "/var/gsm/themwi-sip-out.cfg";
30
31 struct parse_state {
32 int lineno;
33 int set_mask;
34 };
35
36 static void
37 require_one_arg(st, kw, arg)
38 struct parse_state *st;
39 char *kw, *arg;
40 {
41 char *cp;
42
43 if (*arg == '\0' || *arg == '#') {
44 inv_syntax: fprintf(stderr,
45 "%s line %d: %s setting requires one argument\n",
46 config_file_pathname, st->lineno, kw);
47 exit(1);
48 }
49 for (cp = arg; *cp && !isspace(*cp); cp++)
50 ;
51 if (*cp)
52 *cp++ = '\0';
53 while (isspace(*cp))
54 cp++;
55 if (*cp != '\0' && *cp != '#')
56 goto inv_syntax;
57 }
58
59 static void
60 handle_ip(st, kw, arg, var)
61 struct parse_state *st;
62 char *kw, *arg;
63 struct in_addr *var;
64 {
65 require_one_arg(st, kw, arg);
66 var->s_addr = inet_addr(arg);
67 if (var->s_addr == INADDR_NONE) {
68 fprintf(stderr,
69 "%s line %d: invalid IP address argument \"%s\"\n",
70 config_file_pathname, st->lineno, arg);
71 exit(1);
72 }
73 }
74
75 static void
76 handle_num(st, kw, arg, var)
77 struct parse_state *st;
78 char *kw, *arg;
79 unsigned *var;
80 {
81 char *endp;
82
83 require_one_arg(st, kw, arg);
84 *var = strtoul(arg, &endp, 10);
85 if (*endp) {
86 fprintf(stderr, "%s line %d: invalid numeric argument \"%s\"\n",
87 config_file_pathname, st->lineno, arg);
88 exit(1);
89 }
90 }
91
92 static void
93 handle_bool(st, kw, arg, var)
94 struct parse_state *st;
95 char *kw, *arg;
96 int *var;
97 {
98 require_one_arg(st, kw, arg);
99 if (!strcmp(arg, "true") || !strcmp(arg, "on") || !strcmp(arg, "yes")
100 || !strcmp(arg, "1")) {
101 *var = 1;
102 return;
103 }
104 if (!strcmp(arg, "false") || !strcmp(arg, "off") || !strcmp(arg, "no")
105 || !strcmp(arg, "0")) {
106 *var = 0;
107 return;
108 }
109 fprintf(stderr, "%s line %d: invalid boolean argument \"%s\"\n",
110 config_file_pathname, st->lineno, arg);
111 exit(1);
112 }
113
114 static void
115 handle_retrans_conf(st, kw, arg)
116 struct parse_state *st;
117 char *kw, *arg;
118 {
119 char *cp = arg;
120
121 if (!isdigit(*cp)) {
122 inv: fprintf(stderr,
123 "%s line %d: %s setting requires two numeric arguments\n",
124 config_file_pathname, st->lineno, kw);
125 exit(1);
126 }
127 cfg_retrans_timeout = strtoul(cp, &cp, 10);
128 while (isspace(*cp))
129 cp++;
130 if (!isdigit(*cp))
131 goto inv;
132 cfg_retrans_count = strtoul(cp, &cp, 10);
133 while (isspace(*cp))
134 cp++;
135 if (*cp != '\0' && *cp != '#')
136 goto inv;
137 }
138
139 static void
140 process_line(st, line)
141 struct parse_state *st;
142 char *line;
143 {
144 char *cp, *kw;
145 void (*handler)(), *var;
146 int set_id;
147
148 if (!index(line, '\n')) {
149 fprintf(stderr, "%s line %d: too long or missing newline\n",
150 config_file_pathname, st->lineno);
151 exit(1);
152 }
153 for (cp = line; isspace(*cp); cp++)
154 ;
155 if (*cp == '\0' || *cp == '#')
156 return;
157 for (kw = cp; *cp && !isspace(*cp); cp++)
158 ;
159 if (*cp)
160 *cp++ = '\0';
161 if (!strcmp(kw, "bind-ip")) {
162 handler = handle_ip;
163 var = &sip_bind_ip;
164 set_id = 1;
165 } else if (!strcmp(kw, "bind-port")) {
166 handler = handle_num;
167 var = &sip_bind_port;
168 set_id = 2;
169 } else if (!strcmp(kw, "sip-udp-retrans")) {
170 handler = handle_retrans_conf;
171 var = (void *) 0;
172 set_id = 0;
173 } else if (!strcmp(kw, "sip-linger-timeout")) {
174 handler = handle_num;
175 var = &sip_linger_timeout;
176 set_id = 0;
177 } else if (!strcmp(kw, "sip-linger-invite-error")) {
178 handler = handle_num;
179 var = &sip_linger_invite_err;
180 set_id = 0;
181 } else if (!strcmp(kw, "sip-linger-got-bye")) {
182 handler = handle_num;
183 var = &sip_linger_gotbye;
184 set_id = 0;
185 } else if (!strcmp(kw, "sip-linger-bye-out-ok")) {
186 handler = handle_num;
187 var = &sip_linger_bye_out_ok;
188 set_id = 0;
189 } else if (!strcmp(kw, "sip-linger-bye-out-error")) {
190 handler = handle_num;
191 var = &sip_linger_bye_out_err;
192 set_id = 0;
193 } else if (!strcmp(kw, "max-forwards")) {
194 handler = &handle_num;
195 var = &max_forwards;
196 set_id = 0;
197 } else if (!strcmp(kw, "block-1900")) {
198 handler = handle_bool;
199 var = &block_1900_numbers;
200 set_id = 0;
201 } else {
202 fprintf(stderr, "%s line %d: non-understood keyword \"%s\"\n",
203 config_file_pathname, st->lineno, kw);
204 exit(1);
205 }
206 if (st->set_mask & set_id) {
207 fprintf(stderr, "%s line %d: duplicate %s setting\n",
208 config_file_pathname, st->lineno, kw);
209 exit(1);
210 }
211 while (isspace(*cp))
212 cp++;
213 handler(st, kw, cp, var);
214 st->set_mask |= set_id;
215 }
216
217 read_config_file()
218 {
219 FILE *inf;
220 struct parse_state pst;
221 char linebuf[256];
222
223 inf = fopen(config_file_pathname, "r");
224 if (!inf) {
225 perror(config_file_pathname);
226 exit(1);
227 }
228 pst.set_mask = 0;
229 for (pst.lineno = 1; fgets(linebuf, sizeof linebuf, inf); pst.lineno++)
230 process_line(&pst, linebuf);
231 fclose(inf);
232 if (pst.set_mask != 3) {
233 fprintf(stderr, "error: %s did not set all required settings\n",
234 config_file_pathname);
235 exit(1);
236 }
237 }