d3372da9 |
1 | /* |
2 | * Dolda Connect - Modular multiuser Direct Connect-style client |
3 | * Copyright (C) 2004 Fredrik Tolf (fredrik@dolda2000.com) |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation; either version 2 of the License, or |
8 | * (at your option) any later version. |
9 | * |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * GNU General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU General Public License |
16 | * along with this program; if not, write to the Free Software |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
18 | */ |
19 | #include <langinfo.h> |
20 | #include <stdio.h> |
21 | #include <unistd.h> |
22 | #include <malloc.h> |
23 | #include <string.h> |
24 | #include <sys/types.h> |
25 | #include <errno.h> |
26 | #include <wctype.h> |
27 | #include <stddef.h> |
28 | #include <wchar.h> |
29 | #include <iconv.h> |
30 | #include <arpa/inet.h> |
31 | |
32 | #ifdef HAVE_CONFIG_H |
33 | #include <config.h> |
34 | #endif |
35 | #include "conf.h" |
36 | #include "log.h" |
37 | #include "utils.h" |
38 | |
39 | static struct configmod *modules = NULL; |
40 | |
41 | #if 0 |
42 | static void dumpconfig(void) |
43 | { |
44 | struct configmod *mod; |
45 | struct configvar *var; |
46 | |
47 | for(mod = modules; mod != NULL; mod = mod->next) |
48 | { |
49 | printf("%s:\n", mod->name); |
50 | for(var = mod->vars; var->type != CONF_VAR_END; var++) |
51 | { |
52 | switch(var->type) |
53 | { |
54 | case CONF_VAR_BOOL: |
55 | printf("\t%s: %s\n", var->name, var->val.num?"t":"f"); |
56 | break; |
57 | case CONF_VAR_INT: |
58 | printf("\t%s: %i\n", var->name, var->val.num); |
59 | break; |
60 | case CONF_VAR_STRING: |
61 | printf("\t%s: \"%ls\" (%i)\n", var->name, var->val.str, wcslen(var->val.str)); |
62 | break; |
63 | case CONF_VAR_IPV4: |
64 | printf("\t%s: %s\n", var->name, inet_ntoa(var->val.ipv4)); |
65 | break; |
66 | } |
67 | } |
68 | } |
69 | } |
70 | #endif |
71 | |
72 | struct configvar *confgetvar(char *modname, char *varname) |
73 | { |
74 | struct configmod *m; |
75 | struct configvar *v; |
76 | |
77 | for(m = modules; m != NULL; m = m->next) |
78 | { |
79 | if(!strcmp(m->name, modname)) |
80 | { |
81 | for(v = m->vars; v->type != CONF_VAR_END; v++) |
82 | { |
83 | if(!strcmp(v->name, varname)) |
84 | return(v); |
85 | } |
86 | break; |
87 | } |
88 | } |
89 | return(NULL); |
90 | } |
91 | |
92 | void confregmod(struct configmod *mod) |
93 | { |
94 | struct configvar *var; |
95 | |
96 | for(var = mod->vars; var->type != CONF_VAR_END; var++) |
97 | { |
98 | switch(var->type) |
99 | { |
100 | case CONF_VAR_BOOL: |
101 | case CONF_VAR_INT: |
102 | var->val.num = var->defaults.num; |
103 | break; |
104 | case CONF_VAR_STRING: |
105 | if(var->defaults.str != NULL) |
106 | { |
107 | var->val.str = swcsdup(var->defaults.str); |
108 | } else { |
109 | var->val.str = NULL; |
110 | } |
111 | break; |
112 | case CONF_VAR_IPV4: |
113 | var->val.ipv4.s_addr = var->defaults.ipv4.s_addr; |
114 | break; |
115 | } |
116 | CBCHAININIT(var, conf_update); |
117 | } |
118 | mod->next = modules; |
119 | modules = mod; |
120 | } |
121 | |
122 | int runconfcmd(int argc, wchar_t **argv) |
123 | { |
124 | struct configmod *module; |
125 | struct configvar *var; |
126 | struct configcmd *cmd; |
127 | int ret, handled; |
128 | wchar_t *p; |
129 | char *cmdn, *buf, *buf2, *valbuf; |
130 | long num; |
131 | struct in_addr newipv4; |
132 | int cb; |
133 | |
134 | if(argc < 1) |
135 | return(0); |
136 | if((cmdn = icwcstombs(argv[0], "us-ascii")) == NULL) |
137 | { |
138 | flog(LOG_WARNING, "could not convert %ls to us-ascii", argv[0]); |
139 | return(1); |
140 | } |
141 | ret = 1; |
142 | handled = 0; |
143 | if(!strcmp(cmdn, "set")) |
144 | { |
145 | handled = 1; |
146 | ret = 0; |
147 | if((p = wcschr(argv[1], L'.')) == NULL) |
148 | { |
149 | flog(LOG_WARNING, "illegal configuration variable format: %ls", argv[1]); |
150 | errno = EINVAL; |
151 | free(cmdn); |
152 | return(1); |
153 | } |
154 | *(p++) = L'\0'; |
155 | if((buf = icwcstombs(argv[1], "us-ascii")) == NULL) |
156 | { |
157 | flog(LOG_WARNING, "could not convert %ls to us-ascii", argv[1]); |
158 | free(cmdn); |
159 | return(1); |
160 | } |
161 | if((buf2 = icwcstombs(p, "us-ascii")) == NULL) |
162 | { |
163 | free(buf); |
164 | flog(LOG_WARNING, "could not convert %ls to us-ascii", p); |
165 | free(cmdn); |
166 | return(1); |
167 | } |
168 | for(module = modules; module != NULL; module = module->next) |
169 | { |
170 | if(!strcmp(module->name, buf) && (module->vars != NULL)) |
171 | { |
172 | for(var = module->vars; var->type != CONF_VAR_END; var++) |
173 | { |
174 | if(!strcmp(var->name, buf2)) |
175 | { |
176 | cb = 0; |
177 | switch(var->type) |
178 | { |
179 | case CONF_VAR_BOOL: |
180 | wcstolower(argv[2]); |
181 | if(!wcscmp(argv[2], L"off") || |
182 | !wcscmp(argv[2], L"false") || |
183 | !wcscmp(argv[2], L"no") || |
184 | !wcscmp(argv[2], L"0")) |
185 | { |
186 | if(var->val.num) |
187 | cb = 1; |
188 | var->val.num = 0; |
189 | } else if(!wcscmp(argv[2], L"on") || |
190 | !wcscmp(argv[2], L"true") || |
191 | !wcscmp(argv[2], L"yes") || |
192 | !wcscmp(argv[2], L"1")) { |
193 | if(!var->val.num) |
194 | cb = 1; |
195 | var->val.num = 1; |
196 | } else { |
197 | flog(LOG_WARNING, "unrecognized boolean: %ls", argv[2]); |
198 | } |
199 | break; |
200 | case CONF_VAR_INT: |
201 | num = wcstol(argv[2], &p, 0); |
202 | if(p == argv[2]) |
203 | { |
204 | flog(LOG_WARNING, "%ls: not a number, ignoring", argv[2]); |
205 | ret = 1; |
206 | } else { |
207 | if(*p != L'\0') |
208 | flog(LOG_WARNING, "%ls: could not entirely parse as a number, ignoring trailing garbage", argv[2]); |
209 | if(num != var->val.num) |
210 | cb = 1; |
211 | var->val.num = num; |
212 | } |
213 | break; |
214 | case CONF_VAR_STRING: |
215 | if(wcscmp(var->val.str, argv[2])) |
216 | cb = 1; |
217 | free(var->val.str); |
218 | var->val.str = swcsdup(argv[2]); |
219 | break; |
220 | case CONF_VAR_IPV4: |
221 | if((valbuf = icwcstombs(argv[2], "us-ascii")) == NULL) |
222 | { |
223 | flog(LOG_WARNING, "could not convert IPv4 address to as-ascii in var %s, ignoring", buf2); |
224 | } else { |
225 | if(!inet_aton(valbuf, &newipv4)) |
226 | { |
227 | flog(LOG_WARNING, "could not parse IPv4 address (%s), ignoring", valbuf); |
228 | memcpy(&var->val.ipv4, &var->defaults.ipv4, sizeof(var->val.ipv4)); |
229 | } else { |
230 | if(memcmp(&newipv4, &var->val.ipv4, sizeof(newipv4))) |
231 | cb = 1; |
232 | memcpy(&var->val.ipv4, &newipv4, sizeof(newipv4)); |
233 | } |
234 | free(valbuf); |
235 | } |
236 | break; |
237 | } |
238 | if(cb) |
239 | CBCHAINDOCB(var, conf_update, var); |
240 | break; |
241 | } |
242 | } |
243 | if(var == NULL) |
244 | flog(LOG_WARNING, "variable %s not found, ignoring set command", buf2); |
245 | break; |
246 | } |
247 | } |
248 | if(module == NULL) |
249 | flog(LOG_WARNING, "module %s not found, ignoring set command", buf); |
250 | free(buf2); |
251 | free(buf); |
252 | } |
253 | for(module = modules; !handled && (module != NULL); module = module->next) |
254 | { |
255 | if(module->cmds != NULL) |
256 | { |
257 | for(cmd = module->cmds; cmd->name != NULL; cmd++) |
258 | { |
259 | if(!strcmp(cmd->name, cmdn)) |
260 | { |
261 | handled = 1; |
262 | ret = cmd->handler(argc, argv); |
263 | break; |
264 | } |
265 | } |
266 | } |
267 | } |
268 | if(!handled) |
269 | flog(LOG_WARNING, "command not found: %s", cmdn); |
270 | free(cmdn); |
271 | return(ret); |
272 | } |
273 | |
274 | char *findconfigfile(void) |
275 | { |
276 | static char pathbuf[128]; |
277 | char *p, *p2; |
278 | |
279 | if(getenv("HOME") != NULL) |
280 | { |
281 | snprintf(pathbuf, sizeof(pathbuf), "%s/.doldacond", getenv("HOME")); |
282 | if(!access(pathbuf, R_OK)) |
283 | return(pathbuf); |
284 | } |
285 | p = CONFIG_PATH; |
286 | do |
287 | { |
288 | p2 = strchr(p, ':'); |
289 | if(p2 != NULL) |
290 | { |
291 | memcpy(pathbuf, p, p2 - p); |
292 | pathbuf[p2 - p] = 0; |
293 | if(!access(pathbuf, R_OK)) |
294 | return(pathbuf); |
295 | } else { |
296 | if(!access(p, R_OK)) |
297 | return(p); |
298 | } |
299 | p = p2 + 1; |
300 | } while(p2 != NULL); |
301 | return(NULL); |
302 | } |
303 | |
304 | void readconfig(FILE *stream) |
305 | { |
306 | int state; |
307 | wint_t c; |
308 | wchar_t *words[16]; |
309 | wchar_t *buf, *p, *p2; |
310 | int w; |
311 | int line; |
312 | |
313 | buf = smalloc(sizeof(wchar_t) * 1024); |
314 | state = 0; |
315 | c = getwc(stream); |
316 | w = 0; |
317 | line = 1; |
318 | p = buf; |
319 | while(c != WEOF) |
320 | { |
321 | if(c == '#') |
322 | { |
323 | do |
324 | c = getwc(stream); |
325 | while((c != WEOF) && (c != L'\n')); |
326 | continue; |
327 | } |
328 | switch(state) |
329 | { |
330 | case 0: |
331 | if(iswspace(c)) |
332 | { |
333 | if(c == L'\n') |
334 | { |
335 | line++; |
336 | if(runconfcmd(w, words)) |
337 | flog(LOG_WARNING, "ignoring this command on line %i", line); |
338 | w = 0; |
339 | } |
340 | c = getwc(stream); |
341 | } else { |
342 | state = 1; |
343 | p2 = p; |
344 | } |
345 | break; |
346 | case 1: |
347 | if(c == L'\"') |
348 | { |
349 | state = 2; |
350 | c = getwc(stream); |
351 | } else if(iswspace(c)) { |
352 | if(w >= 16) |
353 | { |
354 | flog(LOG_WARNING, "too many words on config line %i, ignoring rest", line); |
355 | } else { |
356 | *(p++) = L'\0'; |
357 | words[w++] = p2; |
358 | } |
359 | state = 0; |
360 | } else { |
361 | if(c == L'\\') |
362 | c = getwc(stream); |
363 | if(p - buf < 1023) |
364 | *(p++) = c; |
365 | else |
366 | flog(LOG_WARNING, "too many characters on config line %i, ignoring rest", line); |
367 | c = getwc(stream); |
368 | } |
369 | break; |
370 | case 2: |
371 | if(c == L'\"') |
372 | { |
373 | c = getwc(stream); |
374 | state = 1; |
375 | } else { |
376 | if(c == L'\\') |
377 | c = getwc(stream); |
378 | if(p - buf < 1023) |
379 | *(p++) = c; |
380 | else |
381 | flog(LOG_WARNING, "too many characters on config line %i, ignoring rest", line); |
382 | c = getwc(stream); |
383 | } |
384 | break; |
385 | } |
386 | } |
387 | free(buf); |
388 | if(ferror(stream)) |
389 | flog(LOG_WARNING, "error on configuration stream: %s", strerror(errno)); |
390 | if(state != 0) |
391 | flog(LOG_WARNING, "unexpected end of file"); |
392 | } |