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; | |
49 | ||
1eba4f97 FT |
50 | for(rule = pat->rules; *rule; rule++) |
51 | freerule(*rule); | |
992ce9ef FT |
52 | if(pat->childnm != NULL) |
53 | free(pat->childnm); | |
624f637d | 54 | freeca(pat->fchild); |
992ce9ef FT |
55 | free(pat); |
56 | } | |
57 | ||
58 | static void freeconfig(struct config *cf) | |
59 | { | |
60 | struct child *ch, *nch; | |
61 | struct pattern *pat, *npat; | |
62 | ||
63 | if(cf->prev != NULL) | |
64 | cf->prev->next = cf->next; | |
65 | if(cf->next != NULL) | |
66 | cf->next->prev = cf->prev; | |
67 | if(cf == cflist) | |
68 | cflist = cf->next; | |
0fc6fd13 FT |
69 | if(cf->path != NULL) |
70 | free(cf->path); | |
992ce9ef FT |
71 | for(ch = cf->children; ch != NULL; ch = nch) { |
72 | nch = ch->next; | |
73 | freechild(ch); | |
74 | } | |
75 | for(pat = cf->patterns; pat != NULL; pat = npat) { | |
76 | npat = pat->next; | |
77 | freepattern(pat); | |
78 | } | |
6373daf9 | 79 | freeca(cf->index); |
300d73d9 FT |
80 | if(cf->capture != NULL) |
81 | free(cf->capture); | |
992ce9ef FT |
82 | free(cf); |
83 | } | |
84 | ||
600a1ce7 | 85 | struct child *getchild(struct config *cf, char *name) |
992ce9ef FT |
86 | { |
87 | struct child *ch; | |
88 | ||
89 | for(ch = cf->children; ch; ch = ch->next) { | |
90 | if(!strcmp(ch->name, name)) | |
91 | break; | |
92 | } | |
93 | return(ch); | |
94 | } | |
95 | ||
96 | static struct rule *newrule(struct pattern *pat) | |
97 | { | |
98 | int i; | |
99 | struct rule *rule; | |
100 | ||
101 | for(i = 0; pat->rules[i]; i++); | |
102 | pat->rules = srealloc(pat->rules, sizeof(*pat->rules) * (i + 2)); | |
cceb3611 | 103 | rule = pat->rules[i] = szmalloc(sizeof(*rule)); |
992ce9ef FT |
104 | pat->rules[i + 1] = NULL; |
105 | return(rule); | |
106 | } | |
107 | ||
108 | static struct pattern *newpattern(void) | |
109 | { | |
110 | struct pattern *pat; | |
111 | ||
112 | omalloc(pat); | |
113 | pat->rules = szmalloc(sizeof(*pat->rules)); | |
114 | return(pat); | |
115 | } | |
116 | ||
1eba4f97 FT |
117 | static char **cadup(char **w) |
118 | { | |
119 | char **ret; | |
120 | int i, l; | |
121 | ||
122 | l = calen(w); | |
123 | ret = smalloc(sizeof(*ret) * (l + 1)); | |
124 | for(i = 0; i < l; i++) | |
125 | ret[i] = sstrdup(w[i]); | |
126 | ret[i] = NULL; | |
127 | return(ret); | |
128 | } | |
129 | ||
06c1a718 FT |
130 | static struct pattern *parsepattern(struct cfstate *s) |
131 | { | |
132 | struct pattern *pat; | |
133 | struct rule *rule; | |
1eba4f97 | 134 | int sl; |
06c1a718 FT |
135 | |
136 | if(!strcmp(s->argv[0], "match")) { | |
137 | s->expstart = 1; | |
138 | pat = newpattern(); | |
139 | } else { | |
140 | return(NULL); | |
141 | } | |
142 | ||
8232cebe FT |
143 | if((s->argc > 1) && !strcmp(s->argv[1], "directory")) |
144 | pat->type = PT_DIR; | |
06c1a718 FT |
145 | sl = s->lno; |
146 | while(1) { | |
147 | getcfline(s); | |
148 | if(!strcmp(s->argv[0], "filename")) { | |
149 | if(s->argc < 2) { | |
150 | flog(LOG_WARNING, "%s:%i: missing pattern for `filename' match", s->file, s->lno); | |
151 | continue; | |
152 | } | |
153 | rule = newrule(pat); | |
154 | rule->type = PAT_BASENAME; | |
1eba4f97 | 155 | rule->patterns = cadup(s->argv + 1); |
06c1a718 FT |
156 | } else if(!strcmp(s->argv[0], "pathname")) { |
157 | if(s->argc < 2) { | |
158 | flog(LOG_WARNING, "%s:%i: missing pattern for `pathname' match", s->file, s->lno); | |
159 | continue; | |
160 | } | |
161 | rule = newrule(pat); | |
162 | rule->type = PAT_PATHNAME; | |
1eba4f97 | 163 | rule->patterns = cadup(s->argv + 1); |
06c1a718 FT |
164 | } else if(!strcmp(s->argv[0], "all")) { |
165 | newrule(pat)->type = PAT_ALL; | |
166 | } else if(!strcmp(s->argv[0], "default")) { | |
167 | newrule(pat)->type = PAT_DEFAULT; | |
7711283c FT |
168 | } else if(!strcmp(s->argv[0], "local")) { |
169 | newrule(pat)->type = PAT_LOCAL; | |
06c1a718 FT |
170 | } else if(!strcmp(s->argv[0], "handler")) { |
171 | if(s->argc < 2) { | |
172 | flog(LOG_WARNING, "%s:%i: missing child name for `handler' directive", s->file, s->lno); | |
173 | continue; | |
174 | } | |
175 | if(pat->childnm != NULL) | |
176 | free(pat->childnm); | |
177 | pat->childnm = sstrdup(s->argv[1]); | |
624f637d | 178 | } else if(!strcmp(s->argv[0], "fork")) { |
1eba4f97 | 179 | pat->fchild = cadup(s->argv + 1); |
06c1a718 FT |
180 | } else if(!strcmp(s->argv[0], "end") || !strcmp(s->argv[0], "eof")) { |
181 | break; | |
182 | } else { | |
183 | flog(LOG_WARNING, "%s:%i: unknown directive `%s' in pattern declaration", s->file, s->lno, s->argv[0]); | |
184 | } | |
185 | } | |
186 | ||
187 | if(pat->rules[0] == NULL) { | |
188 | flog(LOG_WARNING, "%s:%i: missing rules in match declaration", s->file, sl); | |
189 | freepattern(pat); | |
190 | return(NULL); | |
191 | } | |
624f637d | 192 | if((pat->childnm == NULL) && (pat->fchild == NULL)) { |
06c1a718 FT |
193 | flog(LOG_WARNING, "%s:%i: missing handler in match declaration", s->file, sl); |
194 | freepattern(pat); | |
195 | return(NULL); | |
196 | } | |
197 | return(pat); | |
198 | } | |
199 | ||
17e55136 FT |
200 | static struct config *emptyconfig(void) |
201 | { | |
202 | struct config *cf; | |
203 | ||
204 | omalloc(cf); | |
205 | return(cf); | |
206 | } | |
207 | ||
600a1ce7 | 208 | struct config *readconfig(char *file) |
992ce9ef | 209 | { |
06c1a718 FT |
210 | struct cfstate *s; |
211 | FILE *in; | |
992ce9ef | 212 | struct config *cf; |
992ce9ef FT |
213 | struct child *child; |
214 | struct pattern *pat; | |
992ce9ef | 215 | |
17e55136 FT |
216 | if((in = fopen(file, "r")) == NULL) { |
217 | flog(LOG_WARNING, "%s: %s", file, strerror(errno)); | |
992ce9ef | 218 | return(NULL); |
06c1a718 | 219 | } |
17e55136 FT |
220 | s = mkcfparser(in, file); |
221 | cf = emptyconfig(); | |
06c1a718 FT |
222 | |
223 | while(1) { | |
224 | getcfline(s); | |
225 | if((child = parsechild(s)) != NULL) { | |
226 | child->next = cf->children; | |
227 | cf->children = child; | |
228 | } else if((pat = parsepattern(s)) != NULL) { | |
229 | pat->next = cf->patterns; | |
230 | cf->patterns = pat; | |
6373daf9 FT |
231 | } else if(!strcmp(s->argv[0], "index-file")) { |
232 | freeca(cf->index); | |
233 | cf->index = NULL; | |
234 | if(s->argc > 1) | |
235 | cf->index = cadup(s->argv + 1); | |
300d73d9 FT |
236 | } else if(!strcmp(s->argv[0], "capture")) { |
237 | if(s->argc < 2) { | |
238 | flog(LOG_WARNING, "%s:%i: missing argument to capture declaration", s->file, s->lno); | |
239 | continue; | |
240 | } | |
241 | if(cf->capture != NULL) | |
242 | free(cf->capture); | |
243 | cf->capture = sstrdup(s->argv[1]); | |
06c1a718 FT |
244 | } else if(!strcmp(s->argv[0], "eof")) { |
245 | break; | |
246 | } else { | |
247 | flog(LOG_WARNING, "%s:%i: unknown directive `%s'", s->file, s->lno, s->argv[0]); | |
992ce9ef | 248 | } |
06c1a718 | 249 | } |
992ce9ef | 250 | |
06c1a718 FT |
251 | freecfparser(s); |
252 | fclose(in); | |
992ce9ef FT |
253 | return(cf); |
254 | } | |
255 | ||
600a1ce7 | 256 | struct config *getconfig(char *path) |
992ce9ef | 257 | { |
a756e349 | 258 | struct config *cf, *ocf; |
992ce9ef | 259 | struct stat sb; |
17e55136 FT |
260 | char *fn; |
261 | time_t mtime; | |
992ce9ef | 262 | |
17e55136 | 263 | fn = sprintf3("%s/.htrc", path); |
992ce9ef FT |
264 | for(cf = cflist; cf != NULL; cf = cf->next) { |
265 | if(!strcmp(cf->path, path)) { | |
17e55136 | 266 | if(now - cf->lastck > 5) { |
a756e349 | 267 | if(stat(fn, &sb) || (sb.st_mtime != cf->mtime)) |
17e55136 | 268 | break; |
992ce9ef | 269 | } |
17e55136 | 270 | cf->lastck = now; |
992ce9ef FT |
271 | return(cf); |
272 | } | |
273 | } | |
a756e349 | 274 | ocf = cf; |
17e55136 FT |
275 | if(access(fn, R_OK) || stat(fn, &sb)) { |
276 | cf = emptyconfig(); | |
277 | mtime = 0; | |
278 | } else { | |
279 | if((cf = readconfig(fn)) == NULL) | |
280 | return(NULL); | |
281 | mtime = sb.st_mtime; | |
992ce9ef | 282 | } |
a756e349 | 283 | if(ocf != NULL) { |
1924fe8c | 284 | mergechildren(cf->children, ocf->children); |
a756e349 FT |
285 | freeconfig(ocf); |
286 | } | |
17e55136 FT |
287 | cf->path = sstrdup(path); |
288 | cf->mtime = mtime; | |
289 | cf->lastck = now; | |
290 | cf->next = cflist; | |
d245c327 FT |
291 | cf->prev = NULL; |
292 | if(cflist != NULL) | |
293 | cflist->prev = cf; | |
17e55136 | 294 | cflist = cf; |
992ce9ef FT |
295 | return(cf); |
296 | } | |
297 | ||
600a1ce7 | 298 | struct config **getconfigs(char *file) |
992ce9ef | 299 | { |
8dce6d19 FT |
300 | static struct config **ret = NULL; |
301 | struct { | |
302 | struct config **b; | |
303 | size_t s, d; | |
304 | } buf; | |
992ce9ef | 305 | struct config *cf; |
8dce6d19 FT |
306 | char *tmp, *p; |
307 | ||
308 | if(ret != NULL) | |
309 | free(ret); | |
310 | bufinit(buf); | |
311 | tmp = sstrdup(file); | |
992ce9ef | 312 | while(1) { |
8dce6d19 | 313 | if((p = strrchr(tmp, '/')) == NULL) |
992ce9ef | 314 | break; |
8dce6d19 FT |
315 | *p = 0; |
316 | if((cf = getconfig(tmp)) != NULL) | |
317 | bufadd(buf, cf); | |
318 | } | |
319 | free(tmp); | |
320 | if((cf = getconfig(".")) != NULL) | |
321 | bufadd(buf, cf); | |
0fc6fd13 FT |
322 | if(lconfig != NULL) |
323 | bufadd(buf, lconfig); | |
324 | if(gconfig != NULL) | |
325 | bufadd(buf, gconfig); | |
8dce6d19 FT |
326 | bufadd(buf, NULL); |
327 | return(ret = buf.b); | |
328 | } | |
329 | ||
da75c835 | 330 | struct child *findchild(char *file, char *name, struct config **cf) |
8dce6d19 FT |
331 | { |
332 | int i; | |
333 | struct config **cfs; | |
334 | struct child *ch; | |
335 | ||
b70b2d4f FT |
336 | if(cf != NULL) |
337 | *cf = NULL; | |
8dce6d19 FT |
338 | cfs = getconfigs(file); |
339 | for(i = 0; cfs[i] != NULL; i++) { | |
da75c835 FT |
340 | if((ch = getchild(cfs[i], name)) != NULL) { |
341 | if(cf != NULL) | |
342 | *cf = cfs[i]; | |
343 | return(ch); | |
344 | } | |
992ce9ef | 345 | } |
b70b2d4f FT |
346 | if(!strcmp(name, ".notfound")) |
347 | return(notfound); | |
da75c835 | 348 | return(NULL); |
992ce9ef FT |
349 | } |
350 | ||
600a1ce7 | 351 | struct pattern *findmatch(char *file, int trydefault, int dir) |
992ce9ef | 352 | { |
1eba4f97 | 353 | int i, o, c; |
8dce6d19 FT |
354 | char *bn; |
355 | struct config **cfs; | |
992ce9ef FT |
356 | struct pattern *pat; |
357 | struct rule *rule; | |
7711283c | 358 | size_t pl; |
992ce9ef FT |
359 | |
360 | if((bn = strrchr(file, '/')) != NULL) | |
361 | bn++; | |
362 | else | |
363 | bn = file; | |
8dce6d19 FT |
364 | cfs = getconfigs(file); |
365 | for(c = 0; cfs[c] != NULL; c++) { | |
366 | for(pat = cfs[c]->patterns; pat != NULL; pat = pat->next) { | |
8232cebe FT |
367 | if(!dir && (pat->type == PT_DIR)) |
368 | continue; | |
369 | if(dir && (pat->type != PT_DIR)) | |
370 | continue; | |
992ce9ef FT |
371 | for(i = 0; (rule = pat->rules[i]) != NULL; i++) { |
372 | if(rule->type == PAT_BASENAME) { | |
1eba4f97 FT |
373 | for(o = 0; rule->patterns[o] != NULL; o++) { |
374 | if(!fnmatch(rule->patterns[o], bn, 0)) | |
375 | break; | |
376 | } | |
377 | if(rule->patterns[o] == NULL) | |
992ce9ef FT |
378 | break; |
379 | } else if(rule->type == PAT_PATHNAME) { | |
1eba4f97 FT |
380 | for(o = 0; rule->patterns[o] != NULL; o++) { |
381 | if(!fnmatch(rule->patterns[o], file, FNM_PATHNAME)) | |
382 | break; | |
383 | } | |
384 | if(rule->patterns[o] == NULL) | |
992ce9ef FT |
385 | break; |
386 | } else if(rule->type == PAT_ALL) { | |
387 | } else if(rule->type == PAT_DEFAULT) { | |
388 | if(!trydefault) | |
389 | break; | |
7711283c FT |
390 | } else if(rule->type == PAT_LOCAL) { |
391 | if(cfs[c]->path == NULL) | |
392 | break; | |
393 | pl = strlen(cfs[c]->path); | |
394 | if(!((strlen(file) > pl) && !strncmp(file, cfs[c]->path, pl) && (file[pl] == '/') && !strchr(file + pl + 1, '/'))) | |
395 | break; | |
992ce9ef FT |
396 | } |
397 | } | |
398 | if(!rule) | |
8dce6d19 | 399 | return(pat); |
992ce9ef FT |
400 | } |
401 | } | |
8232cebe FT |
402 | if(!trydefault) |
403 | return(findmatch(file, 1, dir)); | |
8dce6d19 | 404 | return(NULL); |
992ce9ef | 405 | } |
b70b2d4f FT |
406 | |
407 | static int donotfound(struct child *ch, struct hthead *req, int fd, void (*chinit)(void *), void *idata) | |
408 | { | |
409 | simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource."); | |
410 | return(0); | |
411 | } | |
412 | ||
413 | static struct chandler i_notfound = { | |
414 | .handle = donotfound, | |
415 | }; | |
416 | ||
417 | static struct child s_notfound = { | |
418 | .name = ".notfound", | |
419 | .iface = &i_notfound, | |
420 | }; | |
421 | struct child *notfound = &s_notfound; |