Fixed ashd.wsgidir to make wmain work as intended.
[ashd.git] / src / dirplex / conf.c
CommitLineData
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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>
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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>
992ce9ef 33
600a1ce7 34#include "dirplex.h"
992ce9ef 35
0fc6fd13 36static struct config *cflist;
600a1ce7 37struct config *gconfig, *lconfig;
992ce9ef 38
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39static void freerule(struct rule *rule)
40{
41 freeca(rule->patterns);
42 free(rule);
43}
44
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45static void freepattern(struct pattern *pat)
46{
47 struct rule **rule;
48
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49 for(rule = pat->rules; *rule; rule++)
50 freerule(*rule);
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51 if(pat->childnm != NULL)
52 free(pat->childnm);
624f637d 53 freeca(pat->fchild);
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54 free(pat);
55}
56
57static void freeconfig(struct config *cf)
58{
59 struct child *ch, *nch;
60 struct pattern *pat, *npat;
61
62 if(cf->prev != NULL)
63 cf->prev->next = cf->next;
64 if(cf->next != NULL)
65 cf->next->prev = cf->prev;
66 if(cf == cflist)
67 cflist = cf->next;
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68 if(cf->path != NULL)
69 free(cf->path);
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70 for(ch = cf->children; ch != NULL; ch = nch) {
71 nch = ch->next;
72 freechild(ch);
73 }
74 for(pat = cf->patterns; pat != NULL; pat = npat) {
75 npat = pat->next;
76 freepattern(pat);
77 }
6373daf9 78 freeca(cf->index);
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79 if(cf->capture != NULL)
80 free(cf->capture);
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81 free(cf);
82}
83
600a1ce7 84struct child *getchild(struct config *cf, char *name)
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85{
86 struct child *ch;
87
88 for(ch = cf->children; ch; ch = ch->next) {
89 if(!strcmp(ch->name, name))
90 break;
91 }
92 return(ch);
93}
94
95static struct rule *newrule(struct pattern *pat)
96{
97 int i;
98 struct rule *rule;
99
100 for(i = 0; pat->rules[i]; i++);
101 pat->rules = srealloc(pat->rules, sizeof(*pat->rules) * (i + 2));
cceb3611 102 rule = pat->rules[i] = szmalloc(sizeof(*rule));
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103 pat->rules[i + 1] = NULL;
104 return(rule);
105}
106
107static struct pattern *newpattern(void)
108{
109 struct pattern *pat;
110
111 omalloc(pat);
112 pat->rules = szmalloc(sizeof(*pat->rules));
113 return(pat);
114}
115
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116static char **cadup(char **w)
117{
118 char **ret;
119 int i, l;
120
121 l = calen(w);
122 ret = smalloc(sizeof(*ret) * (l + 1));
123 for(i = 0; i < l; i++)
124 ret[i] = sstrdup(w[i]);
125 ret[i] = NULL;
126 return(ret);
127}
128
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129static struct pattern *parsepattern(struct cfstate *s)
130{
131 struct pattern *pat;
132 struct rule *rule;
1eba4f97 133 int sl;
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134
135 if(!strcmp(s->argv[0], "match")) {
136 s->expstart = 1;
137 pat = newpattern();
138 } else {
139 return(NULL);
140 }
141
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142 if((s->argc > 1) && !strcmp(s->argv[1], "directory"))
143 pat->type = PT_DIR;
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144 sl = s->lno;
145 while(1) {
146 getcfline(s);
147 if(!strcmp(s->argv[0], "filename")) {
148 if(s->argc < 2) {
149 flog(LOG_WARNING, "%s:%i: missing pattern for `filename' match", s->file, s->lno);
150 continue;
151 }
152 rule = newrule(pat);
153 rule->type = PAT_BASENAME;
1eba4f97 154 rule->patterns = cadup(s->argv + 1);
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155 } else if(!strcmp(s->argv[0], "pathname")) {
156 if(s->argc < 2) {
157 flog(LOG_WARNING, "%s:%i: missing pattern for `pathname' match", s->file, s->lno);
158 continue;
159 }
160 rule = newrule(pat);
161 rule->type = PAT_PATHNAME;
1eba4f97 162 rule->patterns = cadup(s->argv + 1);
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163 } else if(!strcmp(s->argv[0], "all")) {
164 newrule(pat)->type = PAT_ALL;
165 } else if(!strcmp(s->argv[0], "default")) {
166 newrule(pat)->type = PAT_DEFAULT;
167 } else if(!strcmp(s->argv[0], "handler")) {
168 if(s->argc < 2) {
169 flog(LOG_WARNING, "%s:%i: missing child name for `handler' directive", s->file, s->lno);
170 continue;
171 }
172 if(pat->childnm != NULL)
173 free(pat->childnm);
174 pat->childnm = sstrdup(s->argv[1]);
624f637d 175 } else if(!strcmp(s->argv[0], "fork")) {
1eba4f97 176 pat->fchild = cadup(s->argv + 1);
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177 } else if(!strcmp(s->argv[0], "end") || !strcmp(s->argv[0], "eof")) {
178 break;
179 } else {
180 flog(LOG_WARNING, "%s:%i: unknown directive `%s' in pattern declaration", s->file, s->lno, s->argv[0]);
181 }
182 }
183
184 if(pat->rules[0] == NULL) {
185 flog(LOG_WARNING, "%s:%i: missing rules in match declaration", s->file, sl);
186 freepattern(pat);
187 return(NULL);
188 }
624f637d 189 if((pat->childnm == NULL) && (pat->fchild == NULL)) {
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190 flog(LOG_WARNING, "%s:%i: missing handler in match declaration", s->file, sl);
191 freepattern(pat);
192 return(NULL);
193 }
194 return(pat);
195}
196
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197static struct config *emptyconfig(void)
198{
199 struct config *cf;
200
201 omalloc(cf);
202 return(cf);
203}
204
600a1ce7 205struct config *readconfig(char *file)
992ce9ef 206{
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207 struct cfstate *s;
208 FILE *in;
992ce9ef 209 struct config *cf;
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210 struct child *child;
211 struct pattern *pat;
992ce9ef 212
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213 if((in = fopen(file, "r")) == NULL) {
214 flog(LOG_WARNING, "%s: %s", file, strerror(errno));
992ce9ef 215 return(NULL);
06c1a718 216 }
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217 s = mkcfparser(in, file);
218 cf = emptyconfig();
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219
220 while(1) {
221 getcfline(s);
222 if((child = parsechild(s)) != NULL) {
223 child->next = cf->children;
224 cf->children = child;
225 } else if((pat = parsepattern(s)) != NULL) {
226 pat->next = cf->patterns;
227 cf->patterns = pat;
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228 } else if(!strcmp(s->argv[0], "index-file")) {
229 freeca(cf->index);
230 cf->index = NULL;
231 if(s->argc > 1)
232 cf->index = cadup(s->argv + 1);
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233 } else if(!strcmp(s->argv[0], "capture")) {
234 if(s->argc < 2) {
235 flog(LOG_WARNING, "%s:%i: missing argument to capture declaration", s->file, s->lno);
236 continue;
237 }
238 if(cf->capture != NULL)
239 free(cf->capture);
240 cf->capture = sstrdup(s->argv[1]);
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241 } else if(!strcmp(s->argv[0], "eof")) {
242 break;
243 } else {
244 flog(LOG_WARNING, "%s:%i: unknown directive `%s'", s->file, s->lno, s->argv[0]);
992ce9ef 245 }
06c1a718 246 }
992ce9ef 247
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248 freecfparser(s);
249 fclose(in);
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250 return(cf);
251}
252
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253static void mergechildren(struct config *dst, struct config *src)
254{
255 struct child *ch1, *ch2;
256
257 for(ch1 = dst->children; ch1 != NULL; ch1 = ch1->next) {
258 for(ch2 = src->children; ch2 != NULL; ch2 = ch2->next) {
259 if(!strcmp(ch1->name, ch2->name)) {
260 ch1->fd = ch2->fd;
261 ch2->fd = -1;
262 break;
263 }
264 }
265 }
266}
267
600a1ce7 268struct config *getconfig(char *path)
992ce9ef 269{
a756e349 270 struct config *cf, *ocf;
992ce9ef 271 struct stat sb;
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272 char *fn;
273 time_t mtime;
992ce9ef 274
17e55136 275 fn = sprintf3("%s/.htrc", path);
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276 for(cf = cflist; cf != NULL; cf = cf->next) {
277 if(!strcmp(cf->path, path)) {
17e55136 278 if(now - cf->lastck > 5) {
a756e349 279 if(stat(fn, &sb) || (sb.st_mtime != cf->mtime))
17e55136 280 break;
992ce9ef 281 }
17e55136 282 cf->lastck = now;
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283 return(cf);
284 }
285 }
a756e349 286 ocf = cf;
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287 if(access(fn, R_OK) || stat(fn, &sb)) {
288 cf = emptyconfig();
289 mtime = 0;
290 } else {
291 if((cf = readconfig(fn)) == NULL)
292 return(NULL);
293 mtime = sb.st_mtime;
992ce9ef 294 }
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295 if(ocf != NULL) {
296 mergechildren(cf, ocf);
297 freeconfig(ocf);
298 }
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299 cf->path = sstrdup(path);
300 cf->mtime = mtime;
301 cf->lastck = now;
302 cf->next = cflist;
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303 cf->prev = NULL;
304 if(cflist != NULL)
305 cflist->prev = cf;
17e55136 306 cflist = cf;
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307 return(cf);
308}
309
600a1ce7 310struct config **getconfigs(char *file)
992ce9ef 311{
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312 static struct config **ret = NULL;
313 struct {
314 struct config **b;
315 size_t s, d;
316 } buf;
992ce9ef 317 struct config *cf;
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318 char *tmp, *p;
319
320 if(ret != NULL)
321 free(ret);
322 bufinit(buf);
323 tmp = sstrdup(file);
992ce9ef 324 while(1) {
8dce6d19 325 if((p = strrchr(tmp, '/')) == NULL)
992ce9ef 326 break;
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327 *p = 0;
328 if((cf = getconfig(tmp)) != NULL)
329 bufadd(buf, cf);
330 }
331 free(tmp);
332 if((cf = getconfig(".")) != NULL)
333 bufadd(buf, cf);
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334 if(lconfig != NULL)
335 bufadd(buf, lconfig);
336 if(gconfig != NULL)
337 bufadd(buf, gconfig);
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338 bufadd(buf, NULL);
339 return(ret = buf.b);
340}
341
da75c835 342struct child *findchild(char *file, char *name, struct config **cf)
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343{
344 int i;
345 struct config **cfs;
346 struct child *ch;
347
348 cfs = getconfigs(file);
349 for(i = 0; cfs[i] != NULL; i++) {
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350 if((ch = getchild(cfs[i], name)) != NULL) {
351 if(cf != NULL)
352 *cf = cfs[i];
353 return(ch);
354 }
992ce9ef 355 }
da75c835 356 return(NULL);
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357}
358
600a1ce7 359struct pattern *findmatch(char *file, int trydefault, int dir)
992ce9ef 360{
1eba4f97 361 int i, o, c;
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362 char *bn;
363 struct config **cfs;
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364 struct pattern *pat;
365 struct rule *rule;
366
367 if((bn = strrchr(file, '/')) != NULL)
368 bn++;
369 else
370 bn = file;
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371 cfs = getconfigs(file);
372 for(c = 0; cfs[c] != NULL; c++) {
373 for(pat = cfs[c]->patterns; pat != NULL; pat = pat->next) {
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374 if(!dir && (pat->type == PT_DIR))
375 continue;
376 if(dir && (pat->type != PT_DIR))
377 continue;
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378 for(i = 0; (rule = pat->rules[i]) != NULL; i++) {
379 if(rule->type == PAT_BASENAME) {
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380 for(o = 0; rule->patterns[o] != NULL; o++) {
381 if(!fnmatch(rule->patterns[o], bn, 0))
382 break;
383 }
384 if(rule->patterns[o] == NULL)
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385 break;
386 } else if(rule->type == PAT_PATHNAME) {
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387 for(o = 0; rule->patterns[o] != NULL; o++) {
388 if(!fnmatch(rule->patterns[o], file, FNM_PATHNAME))
389 break;
390 }
391 if(rule->patterns[o] == NULL)
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392 break;
393 } else if(rule->type == PAT_ALL) {
394 } else if(rule->type == PAT_DEFAULT) {
395 if(!trydefault)
396 break;
397 }
398 }
399 if(!rule)
8dce6d19 400 return(pat);
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401 }
402 }
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403 if(!trydefault)
404 return(findmatch(file, 1, dir));
8dce6d19 405 return(NULL);
992ce9ef 406}