Commit | Line | Data |
---|---|---|
992ce9ef FT |
1 | /* |
2 | ashd - A Sane HTTP Daemon | |
3 | Copyright (C) 2008 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 3 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, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | #include <stdlib.h> | |
20 | #include <stdio.h> | |
992ce9ef | 21 | #include <unistd.h> |
600a1ce7 | 22 | #include <string.h> |
992ce9ef | 23 | #include <errno.h> |
992ce9ef | 24 | #include <fnmatch.h> |
600a1ce7 | 25 | #include <sys/stat.h> |
992ce9ef FT |
26 | |
27 | #ifdef HAVE_CONFIG_H | |
28 | #include <config.h> | |
29 | #endif | |
30 | #include <utils.h> | |
992ce9ef | 31 | #include <log.h> |
06c1a718 | 32 | #include <cf.h> |
b70b2d4f | 33 | #include <resp.h> |
992ce9ef | 34 | |
600a1ce7 | 35 | #include "dirplex.h" |
992ce9ef | 36 | |
0fc6fd13 | 37 | static struct config *cflist; |
600a1ce7 | 38 | struct config *gconfig, *lconfig; |
992ce9ef | 39 | |
1eba4f97 FT |
40 | static void freerule(struct rule *rule) |
41 | { | |
42 | freeca(rule->patterns); | |
43 | free(rule); | |
44 | } | |
45 | ||
992ce9ef FT |
46 | static void freepattern(struct pattern *pat) |
47 | { | |
48 | struct rule **rule; | |
acc2d159 | 49 | struct headmod *head; |
992ce9ef | 50 | |
1eba4f97 FT |
51 | for(rule = pat->rules; *rule; rule++) |
52 | freerule(*rule); | |
acc2d159 FT |
53 | while((head = pat->headers) != NULL) { |
54 | pat->headers = head->next; | |
55 | free(head->name); | |
56 | free(head->value); | |
57 | free(head); | |
58 | } | |
992ce9ef FT |
59 | if(pat->childnm != NULL) |
60 | free(pat->childnm); | |
624f637d | 61 | freeca(pat->fchild); |
992ce9ef FT |
62 | free(pat); |
63 | } | |
64 | ||
65 | static void freeconfig(struct config *cf) | |
66 | { | |
67 | struct child *ch, *nch; | |
68 | struct pattern *pat, *npat; | |
69 | ||
70 | if(cf->prev != NULL) | |
71 | cf->prev->next = cf->next; | |
72 | if(cf->next != NULL) | |
73 | cf->next->prev = cf->prev; | |
74 | if(cf == cflist) | |
75 | cflist = cf->next; | |
0fc6fd13 FT |
76 | if(cf->path != NULL) |
77 | free(cf->path); | |
992ce9ef FT |
78 | for(ch = cf->children; ch != NULL; ch = nch) { |
79 | nch = ch->next; | |
80 | freechild(ch); | |
81 | } | |
82 | for(pat = cf->patterns; pat != NULL; pat = npat) { | |
83 | npat = pat->next; | |
84 | freepattern(pat); | |
85 | } | |
6373daf9 | 86 | freeca(cf->index); |
7aad7863 | 87 | freeca(cf->dotallow); |
300d73d9 FT |
88 | if(cf->capture != NULL) |
89 | free(cf->capture); | |
539c7b9f FT |
90 | if(cf->reparse != NULL) |
91 | free(cf->reparse); | |
992ce9ef FT |
92 | free(cf); |
93 | } | |
94 | ||
600a1ce7 | 95 | struct child *getchild(struct config *cf, char *name) |
992ce9ef FT |
96 | { |
97 | struct child *ch; | |
98 | ||
99 | for(ch = cf->children; ch; ch = ch->next) { | |
100 | if(!strcmp(ch->name, name)) | |
101 | break; | |
102 | } | |
103 | return(ch); | |
104 | } | |
105 | ||
106 | static struct rule *newrule(struct pattern *pat) | |
107 | { | |
108 | int i; | |
109 | struct rule *rule; | |
110 | ||
111 | for(i = 0; pat->rules[i]; i++); | |
112 | pat->rules = srealloc(pat->rules, sizeof(*pat->rules) * (i + 2)); | |
cceb3611 | 113 | rule = pat->rules[i] = szmalloc(sizeof(*rule)); |
992ce9ef FT |
114 | pat->rules[i + 1] = NULL; |
115 | return(rule); | |
116 | } | |
117 | ||
118 | static struct pattern *newpattern(void) | |
119 | { | |
120 | struct pattern *pat; | |
121 | ||
122 | omalloc(pat); | |
123 | pat->rules = szmalloc(sizeof(*pat->rules)); | |
124 | return(pat); | |
125 | } | |
126 | ||
1eba4f97 FT |
127 | static char **cadup(char **w) |
128 | { | |
129 | char **ret; | |
130 | int i, l; | |
131 | ||
132 | l = calen(w); | |
133 | ret = smalloc(sizeof(*ret) * (l + 1)); | |
134 | for(i = 0; i < l; i++) | |
135 | ret[i] = sstrdup(w[i]); | |
136 | ret[i] = NULL; | |
137 | return(ret); | |
138 | } | |
139 | ||
06c1a718 FT |
140 | static struct pattern *parsepattern(struct cfstate *s) |
141 | { | |
142 | struct pattern *pat; | |
143 | struct rule *rule; | |
acc2d159 | 144 | struct headmod *head; |
1eba4f97 | 145 | int sl; |
06c1a718 FT |
146 | |
147 | if(!strcmp(s->argv[0], "match")) { | |
148 | s->expstart = 1; | |
149 | pat = newpattern(); | |
150 | } else { | |
151 | return(NULL); | |
152 | } | |
153 | ||
8232cebe FT |
154 | if((s->argc > 1) && !strcmp(s->argv[1], "directory")) |
155 | pat->type = PT_DIR; | |
a0b6c27c FT |
156 | else if((s->argc > 1) && !strcmp(s->argv[1], "notfound")) |
157 | pat->type = PT_NOTFOUND; | |
158 | else | |
159 | pat->type = PT_FILE; | |
06c1a718 FT |
160 | sl = s->lno; |
161 | while(1) { | |
162 | getcfline(s); | |
163 | if(!strcmp(s->argv[0], "filename")) { | |
164 | if(s->argc < 2) { | |
165 | flog(LOG_WARNING, "%s:%i: missing pattern for `filename' match", s->file, s->lno); | |
166 | continue; | |
167 | } | |
168 | rule = newrule(pat); | |
169 | rule->type = PAT_BASENAME; | |
1eba4f97 | 170 | rule->patterns = cadup(s->argv + 1); |
06c1a718 FT |
171 | } else if(!strcmp(s->argv[0], "pathname")) { |
172 | if(s->argc < 2) { | |
173 | flog(LOG_WARNING, "%s:%i: missing pattern for `pathname' match", s->file, s->lno); | |
174 | continue; | |
175 | } | |
176 | rule = newrule(pat); | |
177 | rule->type = PAT_PATHNAME; | |
1eba4f97 | 178 | rule->patterns = cadup(s->argv + 1); |
06c1a718 FT |
179 | } else if(!strcmp(s->argv[0], "all")) { |
180 | newrule(pat)->type = PAT_ALL; | |
181 | } else if(!strcmp(s->argv[0], "default")) { | |
182 | newrule(pat)->type = PAT_DEFAULT; | |
7711283c FT |
183 | } else if(!strcmp(s->argv[0], "local")) { |
184 | newrule(pat)->type = PAT_LOCAL; | |
06c1a718 FT |
185 | } else if(!strcmp(s->argv[0], "handler")) { |
186 | if(s->argc < 2) { | |
187 | flog(LOG_WARNING, "%s:%i: missing child name for `handler' directive", s->file, s->lno); | |
188 | continue; | |
189 | } | |
190 | if(pat->childnm != NULL) | |
191 | free(pat->childnm); | |
192 | pat->childnm = sstrdup(s->argv[1]); | |
624f637d | 193 | } else if(!strcmp(s->argv[0], "fork")) { |
1eba4f97 | 194 | pat->fchild = cadup(s->argv + 1); |
8cc893f5 | 195 | } else if(!strcmp(s->argv[0], "set") || !strcmp(s->argv[0], "xset")) { |
acc2d159 | 196 | if(s->argc < 3) { |
8cc893f5 | 197 | flog(LOG_WARNING, "%s:%i: missing header name or pattern for `%s' directive", s->file, s->lno, s->argv[0]); |
acc2d159 FT |
198 | continue; |
199 | } | |
200 | omalloc(head); | |
8cc893f5 FT |
201 | if(!strcmp(s->argv[0], "xset")) |
202 | head->name = sprintf2("X-Ash-%s", s->argv[1]); | |
203 | else | |
204 | head->name = sstrdup(s->argv[1]); | |
acc2d159 FT |
205 | head->value = sstrdup(s->argv[2]); |
206 | head->next = pat->headers; | |
207 | pat->headers = head; | |
06c1a718 FT |
208 | } else if(!strcmp(s->argv[0], "end") || !strcmp(s->argv[0], "eof")) { |
209 | break; | |
210 | } else { | |
211 | flog(LOG_WARNING, "%s:%i: unknown directive `%s' in pattern declaration", s->file, s->lno, s->argv[0]); | |
212 | } | |
213 | } | |
214 | ||
215 | if(pat->rules[0] == NULL) { | |
216 | flog(LOG_WARNING, "%s:%i: missing rules in match declaration", s->file, sl); | |
217 | freepattern(pat); | |
218 | return(NULL); | |
219 | } | |
624f637d | 220 | if((pat->childnm == NULL) && (pat->fchild == NULL)) { |
06c1a718 FT |
221 | flog(LOG_WARNING, "%s:%i: missing handler in match declaration", s->file, sl); |
222 | freepattern(pat); | |
223 | return(NULL); | |
224 | } | |
225 | return(pat); | |
226 | } | |
227 | ||
17e55136 FT |
228 | static struct config *emptyconfig(void) |
229 | { | |
230 | struct config *cf; | |
231 | ||
232 | omalloc(cf); | |
233 | return(cf); | |
234 | } | |
235 | ||
600a1ce7 | 236 | struct config *readconfig(char *file) |
992ce9ef | 237 | { |
06c1a718 FT |
238 | struct cfstate *s; |
239 | FILE *in; | |
992ce9ef | 240 | struct config *cf; |
992ce9ef FT |
241 | struct child *child; |
242 | struct pattern *pat; | |
992ce9ef | 243 | |
17e55136 FT |
244 | if((in = fopen(file, "r")) == NULL) { |
245 | flog(LOG_WARNING, "%s: %s", file, strerror(errno)); | |
992ce9ef | 246 | return(NULL); |
06c1a718 | 247 | } |
17e55136 FT |
248 | s = mkcfparser(in, file); |
249 | cf = emptyconfig(); | |
06c1a718 FT |
250 | |
251 | while(1) { | |
252 | getcfline(s); | |
253 | if((child = parsechild(s)) != NULL) { | |
254 | child->next = cf->children; | |
255 | cf->children = child; | |
256 | } else if((pat = parsepattern(s)) != NULL) { | |
257 | pat->next = cf->patterns; | |
258 | cf->patterns = pat; | |
6373daf9 FT |
259 | } else if(!strcmp(s->argv[0], "index-file")) { |
260 | freeca(cf->index); | |
7bf1ad5a | 261 | cf->index = cadup(s->argv + 1); |
7aad7863 FT |
262 | } else if(!strcmp(s->argv[0], "dot-allow")) { |
263 | freeca(cf->dotallow); | |
264 | cf->dotallow = cadup(s->argv + 1); | |
300d73d9 FT |
265 | } else if(!strcmp(s->argv[0], "capture")) { |
266 | if(s->argc < 2) { | |
267 | flog(LOG_WARNING, "%s:%i: missing argument to capture declaration", s->file, s->lno); | |
268 | continue; | |
269 | } | |
270 | if(cf->capture != NULL) | |
271 | free(cf->capture); | |
272 | cf->capture = sstrdup(s->argv[1]); | |
257cd4a2 FT |
273 | cf->caproot = 0; |
274 | if((s->argc > 2) && strchr(s->argv[2], 'D')) | |
275 | cf->caproot = 1; | |
539c7b9f FT |
276 | } else if(!strcmp(s->argv[0], "reparse")) { |
277 | if(s->argc < 2) { | |
278 | flog(LOG_WARNING, "%s:%i: missing argument to reparse declaration", s->file, s->lno); | |
279 | continue; | |
280 | } | |
281 | if(cf->reparse != NULL) | |
282 | free(cf->reparse); | |
283 | cf->reparse = sstrdup(s->argv[1]); | |
284 | cf->parsecomb = 0; | |
285 | if((s->argc > 2) && strchr(s->argv[2], 'c')) | |
286 | cf->parsecomb = 1; | |
06c1a718 FT |
287 | } else if(!strcmp(s->argv[0], "eof")) { |
288 | break; | |
289 | } else { | |
290 | flog(LOG_WARNING, "%s:%i: unknown directive `%s'", s->file, s->lno, s->argv[0]); | |
992ce9ef | 291 | } |
06c1a718 | 292 | } |
992ce9ef | 293 | |
06c1a718 FT |
294 | freecfparser(s); |
295 | fclose(in); | |
992ce9ef FT |
296 | return(cf); |
297 | } | |
298 | ||
600a1ce7 | 299 | struct config *getconfig(char *path) |
992ce9ef | 300 | { |
a756e349 | 301 | struct config *cf, *ocf; |
992ce9ef | 302 | struct stat sb; |
17e55136 FT |
303 | char *fn; |
304 | time_t mtime; | |
992ce9ef | 305 | |
17e55136 | 306 | fn = sprintf3("%s/.htrc", path); |
992ce9ef FT |
307 | for(cf = cflist; cf != NULL; cf = cf->next) { |
308 | if(!strcmp(cf->path, path)) { | |
17e55136 | 309 | if(now - cf->lastck > 5) { |
0fb57c32 | 310 | cf->lastck = now; |
a756e349 | 311 | if(stat(fn, &sb) || (sb.st_mtime != cf->mtime)) |
17e55136 | 312 | break; |
992ce9ef FT |
313 | } |
314 | return(cf); | |
315 | } | |
316 | } | |
a756e349 | 317 | ocf = cf; |
17e55136 FT |
318 | if(access(fn, R_OK) || stat(fn, &sb)) { |
319 | cf = emptyconfig(); | |
320 | mtime = 0; | |
321 | } else { | |
322 | if((cf = readconfig(fn)) == NULL) | |
323 | return(NULL); | |
324 | mtime = sb.st_mtime; | |
992ce9ef | 325 | } |
a756e349 | 326 | if(ocf != NULL) { |
1924fe8c | 327 | mergechildren(cf->children, ocf->children); |
a756e349 FT |
328 | freeconfig(ocf); |
329 | } | |
17e55136 FT |
330 | cf->path = sstrdup(path); |
331 | cf->mtime = mtime; | |
332 | cf->lastck = now; | |
333 | cf->next = cflist; | |
d245c327 FT |
334 | cf->prev = NULL; |
335 | if(cflist != NULL) | |
336 | cflist->prev = cf; | |
17e55136 | 337 | cflist = cf; |
992ce9ef FT |
338 | return(cf); |
339 | } | |
340 | ||
600a1ce7 | 341 | struct config **getconfigs(char *file) |
992ce9ef | 342 | { |
8dce6d19 FT |
343 | static struct config **ret = NULL; |
344 | struct { | |
345 | struct config **b; | |
346 | size_t s, d; | |
347 | } buf; | |
992ce9ef | 348 | struct config *cf; |
8dce6d19 FT |
349 | char *tmp, *p; |
350 | ||
351 | if(ret != NULL) | |
352 | free(ret); | |
353 | bufinit(buf); | |
7db7f678 FT |
354 | if(!strncmp(file, "./", 2)) |
355 | file += 2; | |
8dce6d19 | 356 | tmp = sstrdup(file); |
992ce9ef | 357 | while(1) { |
8dce6d19 | 358 | if((p = strrchr(tmp, '/')) == NULL) |
992ce9ef | 359 | break; |
8dce6d19 FT |
360 | *p = 0; |
361 | if((cf = getconfig(tmp)) != NULL) | |
362 | bufadd(buf, cf); | |
363 | } | |
364 | free(tmp); | |
365 | if((cf = getconfig(".")) != NULL) | |
366 | bufadd(buf, cf); | |
0fc6fd13 FT |
367 | if(lconfig != NULL) |
368 | bufadd(buf, lconfig); | |
369 | if(gconfig != NULL) | |
370 | bufadd(buf, gconfig); | |
8dce6d19 FT |
371 | bufadd(buf, NULL); |
372 | return(ret = buf.b); | |
373 | } | |
374 | ||
da75c835 | 375 | struct child *findchild(char *file, char *name, struct config **cf) |
8dce6d19 FT |
376 | { |
377 | int i; | |
378 | struct config **cfs; | |
379 | struct child *ch; | |
380 | ||
b70b2d4f FT |
381 | if(cf != NULL) |
382 | *cf = NULL; | |
8dce6d19 FT |
383 | cfs = getconfigs(file); |
384 | for(i = 0; cfs[i] != NULL; i++) { | |
da75c835 FT |
385 | if((ch = getchild(cfs[i], name)) != NULL) { |
386 | if(cf != NULL) | |
387 | *cf = cfs[i]; | |
388 | return(ch); | |
389 | } | |
992ce9ef | 390 | } |
b70b2d4f FT |
391 | if(!strcmp(name, ".notfound")) |
392 | return(notfound); | |
da75c835 | 393 | return(NULL); |
992ce9ef FT |
394 | } |
395 | ||
a0b6c27c | 396 | struct pattern *findmatch(char *file, int trydefault, int type) |
992ce9ef | 397 | { |
1eba4f97 | 398 | int i, o, c; |
edcd094e | 399 | char *bn, *ln; |
8dce6d19 | 400 | struct config **cfs; |
992ce9ef FT |
401 | struct pattern *pat; |
402 | struct rule *rule; | |
7711283c | 403 | size_t pl; |
992ce9ef FT |
404 | |
405 | if((bn = strrchr(file, '/')) != NULL) | |
406 | bn++; | |
407 | else | |
408 | bn = file; | |
8dce6d19 FT |
409 | cfs = getconfigs(file); |
410 | for(c = 0; cfs[c] != NULL; c++) { | |
edcd094e FT |
411 | if(cfs[c]->path == NULL) { |
412 | ln = file; | |
413 | } else { | |
414 | pl = strlen(cfs[c]->path); | |
415 | if((strlen(file) > pl) && !strncmp(file, cfs[c]->path, pl) && (file[pl] == '/')) | |
416 | ln = file + pl + 1; | |
417 | else | |
418 | ln = file; /* This should only happen in the base directory. */ | |
419 | } | |
8dce6d19 | 420 | for(pat = cfs[c]->patterns; pat != NULL; pat = pat->next) { |
a0b6c27c | 421 | if(pat->type != type) |
8232cebe | 422 | continue; |
992ce9ef FT |
423 | for(i = 0; (rule = pat->rules[i]) != NULL; i++) { |
424 | if(rule->type == PAT_BASENAME) { | |
1eba4f97 FT |
425 | for(o = 0; rule->patterns[o] != NULL; o++) { |
426 | if(!fnmatch(rule->patterns[o], bn, 0)) | |
427 | break; | |
428 | } | |
429 | if(rule->patterns[o] == NULL) | |
992ce9ef FT |
430 | break; |
431 | } else if(rule->type == PAT_PATHNAME) { | |
1eba4f97 | 432 | for(o = 0; rule->patterns[o] != NULL; o++) { |
edcd094e | 433 | if(!fnmatch(rule->patterns[o], ln, FNM_PATHNAME)) |
1eba4f97 FT |
434 | break; |
435 | } | |
436 | if(rule->patterns[o] == NULL) | |
992ce9ef FT |
437 | break; |
438 | } else if(rule->type == PAT_ALL) { | |
439 | } else if(rule->type == PAT_DEFAULT) { | |
440 | if(!trydefault) | |
441 | break; | |
7711283c | 442 | } else if(rule->type == PAT_LOCAL) { |
edcd094e | 443 | if(strchr(ln, '/')) |
7711283c | 444 | break; |
992ce9ef FT |
445 | } |
446 | } | |
447 | if(!rule) | |
8dce6d19 | 448 | return(pat); |
992ce9ef FT |
449 | } |
450 | } | |
8232cebe | 451 | if(!trydefault) |
a0b6c27c | 452 | return(findmatch(file, 1, type)); |
8dce6d19 | 453 | return(NULL); |
992ce9ef | 454 | } |
b70b2d4f FT |
455 | |
456 | static int donotfound(struct child *ch, struct hthead *req, int fd, void (*chinit)(void *), void *idata) | |
457 | { | |
458 | simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource."); | |
459 | return(0); | |
460 | } | |
461 | ||
462 | static struct chandler i_notfound = { | |
463 | .handle = donotfound, | |
464 | }; | |
465 | ||
466 | static struct child s_notfound = { | |
467 | .name = ".notfound", | |
468 | .iface = &i_notfound, | |
469 | }; | |
470 | struct child *notfound = &s_notfound; |