cgit.c (view raw)
1/* cgit.c: cgi for the git scm
2 *
3 * Copyright (C) 2006 Lars Hjemli
4 *
5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text)
7 */
8
9#include "cgit.h"
10#include "cache.h"
11#include "cmd.h"
12#include "configfile.h"
13#include "html.h"
14#include "ui-shared.h"
15#include "ui-stats.h"
16#include "scan-tree.h"
17
18const char *cgit_version = CGIT_VERSION;
19
20void add_mimetype(const char *name, const char *value)
21{
22 struct string_list_item *item;
23
24 item = string_list_insert(xstrdup(name), &ctx.cfg.mimetypes);
25 item->util = xstrdup(value);
26}
27
28struct cgit_filter *new_filter(const char *cmd, int extra_args)
29{
30 struct cgit_filter *f;
31
32 if (!cmd || !cmd[0])
33 return NULL;
34
35 f = xmalloc(sizeof(struct cgit_filter));
36 f->cmd = xstrdup(cmd);
37 f->argv = xmalloc((2 + extra_args) * sizeof(char *));
38 f->argv[0] = f->cmd;
39 f->argv[1] = NULL;
40 return f;
41}
42
43static void process_cached_repolist(const char *path);
44
45void config_cb(const char *name, const char *value)
46{
47 if (!strcmp(name, "root-title"))
48 ctx.cfg.root_title = xstrdup(value);
49 else if (!strcmp(name, "root-desc"))
50 ctx.cfg.root_desc = xstrdup(value);
51 else if (!strcmp(name, "root-readme"))
52 ctx.cfg.root_readme = xstrdup(value);
53 else if (!strcmp(name, "css"))
54 ctx.cfg.css = xstrdup(value);
55 else if (!strcmp(name, "favicon"))
56 ctx.cfg.favicon = xstrdup(value);
57 else if (!strcmp(name, "footer"))
58 ctx.cfg.footer = xstrdup(value);
59 else if (!strcmp(name, "head-include"))
60 ctx.cfg.head_include = xstrdup(value);
61 else if (!strcmp(name, "header"))
62 ctx.cfg.header = xstrdup(value);
63 else if (!strcmp(name, "logo"))
64 ctx.cfg.logo = xstrdup(value);
65 else if (!strcmp(name, "index-header"))
66 ctx.cfg.index_header = xstrdup(value);
67 else if (!strcmp(name, "index-info"))
68 ctx.cfg.index_info = xstrdup(value);
69 else if (!strcmp(name, "logo-link"))
70 ctx.cfg.logo_link = xstrdup(value);
71 else if (!strcmp(name, "module-link"))
72 ctx.cfg.module_link = xstrdup(value);
73 else if (!strcmp(name, "virtual-root")) {
74 ctx.cfg.virtual_root = trim_end(value, '/');
75 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
76 ctx.cfg.virtual_root = "";
77 } else if (!strcmp(name, "nocache"))
78 ctx.cfg.nocache = atoi(value);
79 else if (!strcmp(name, "noplainemail"))
80 ctx.cfg.noplainemail = atoi(value);
81 else if (!strcmp(name, "noheader"))
82 ctx.cfg.noheader = atoi(value);
83 else if (!strcmp(name, "snapshots"))
84 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
85 else if (!strcmp(name, "enable-index-links"))
86 ctx.cfg.enable_index_links = atoi(value);
87 else if (!strcmp(name, "enable-log-filecount"))
88 ctx.cfg.enable_log_filecount = atoi(value);
89 else if (!strcmp(name, "enable-log-linecount"))
90 ctx.cfg.enable_log_linecount = atoi(value);
91 else if (!strcmp(name, "max-stats"))
92 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
93 else if (!strcmp(name, "cache-size"))
94 ctx.cfg.cache_size = atoi(value);
95 else if (!strcmp(name, "cache-root"))
96 ctx.cfg.cache_root = xstrdup(value);
97 else if (!strcmp(name, "cache-root-ttl"))
98 ctx.cfg.cache_root_ttl = atoi(value);
99 else if (!strcmp(name, "cache-repo-ttl"))
100 ctx.cfg.cache_repo_ttl = atoi(value);
101 else if (!strcmp(name, "cache-scanrc-ttl"))
102 ctx.cfg.cache_scanrc_ttl = atoi(value);
103 else if (!strcmp(name, "cache-static-ttl"))
104 ctx.cfg.cache_static_ttl = atoi(value);
105 else if (!strcmp(name, "cache-dynamic-ttl"))
106 ctx.cfg.cache_dynamic_ttl = atoi(value);
107 else if (!strcmp(name, "about-filter"))
108 ctx.cfg.about_filter = new_filter(value, 0);
109 else if (!strcmp(name, "commit-filter"))
110 ctx.cfg.commit_filter = new_filter(value, 0);
111 else if (!strcmp(name, "embedded"))
112 ctx.cfg.embedded = atoi(value);
113 else if (!strcmp(name, "max-message-length"))
114 ctx.cfg.max_msg_len = atoi(value);
115 else if (!strcmp(name, "max-repodesc-length"))
116 ctx.cfg.max_repodesc_len = atoi(value);
117 else if (!strcmp(name, "max-repo-count"))
118 ctx.cfg.max_repo_count = atoi(value);
119 else if (!strcmp(name, "max-commit-count"))
120 ctx.cfg.max_commit_count = atoi(value);
121 else if (!strcmp(name, "scan-path"))
122 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
123 process_cached_repolist(value);
124 else
125 scan_tree(value);
126 else if (!strcmp(name, "source-filter"))
127 ctx.cfg.source_filter = new_filter(value, 1);
128 else if (!strcmp(name, "summary-log"))
129 ctx.cfg.summary_log = atoi(value);
130 else if (!strcmp(name, "summary-branches"))
131 ctx.cfg.summary_branches = atoi(value);
132 else if (!strcmp(name, "summary-tags"))
133 ctx.cfg.summary_tags = atoi(value);
134 else if (!strcmp(name, "agefile"))
135 ctx.cfg.agefile = xstrdup(value);
136 else if (!strcmp(name, "renamelimit"))
137 ctx.cfg.renamelimit = atoi(value);
138 else if (!strcmp(name, "robots"))
139 ctx.cfg.robots = xstrdup(value);
140 else if (!strcmp(name, "clone-prefix"))
141 ctx.cfg.clone_prefix = xstrdup(value);
142 else if (!strcmp(name, "local-time"))
143 ctx.cfg.local_time = atoi(value);
144 else if (!prefixcmp(name, "mimetype."))
145 add_mimetype(name + 9, value);
146 else if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
147 ctx.cfg.section = xstrdup(value);
148 else if (!strcmp(name, "repo.url"))
149 ctx.repo = cgit_add_repo(value);
150 else if (!strcmp(name, "repo.name"))
151 ctx.repo->name = xstrdup(value);
152 else if (ctx.repo && !strcmp(name, "repo.path"))
153 ctx.repo->path = trim_end(value, '/');
154 else if (ctx.repo && !strcmp(name, "repo.clone-url"))
155 ctx.repo->clone_url = xstrdup(value);
156 else if (ctx.repo && !strcmp(name, "repo.desc"))
157 ctx.repo->desc = xstrdup(value);
158 else if (ctx.repo && !strcmp(name, "repo.owner"))
159 ctx.repo->owner = xstrdup(value);
160 else if (ctx.repo && !strcmp(name, "repo.defbranch"))
161 ctx.repo->defbranch = xstrdup(value);
162 else if (ctx.repo && !strcmp(name, "repo.snapshots"))
163 ctx.repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
164 else if (ctx.repo && !strcmp(name, "repo.enable-log-filecount"))
165 ctx.repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
166 else if (ctx.repo && !strcmp(name, "repo.enable-log-linecount"))
167 ctx.repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
168 else if (ctx.repo && !strcmp(name, "repo.max-stats"))
169 ctx.repo->max_stats = cgit_find_stats_period(value, NULL);
170 else if (ctx.repo && !strcmp(name, "repo.module-link"))
171 ctx.repo->module_link= xstrdup(value);
172 else if (ctx.repo && !strcmp(name, "repo.section"))
173 ctx.repo->section = xstrdup(value);
174 else if (ctx.repo && !strcmp(name, "repo.about-filter"))
175 ctx.repo->about_filter = new_filter(value, 0);
176 else if (ctx.repo && !strcmp(name, "repo.commit-filter"))
177 ctx.repo->commit_filter = new_filter(value, 0);
178 else if (ctx.repo && !strcmp(name, "repo.source-filter"))
179 ctx.repo->source_filter = new_filter(value, 1);
180 else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
181 if (*value == '/')
182 ctx.repo->readme = xstrdup(value);
183 else
184 ctx.repo->readme = xstrdup(fmt("%s/%s", ctx.repo->path, value));
185 } else if (!strcmp(name, "include"))
186 parse_configfile(value, config_cb);
187}
188
189static void querystring_cb(const char *name, const char *value)
190{
191 if (!value)
192 value = "";
193
194 if (!strcmp(name,"r")) {
195 ctx.qry.repo = xstrdup(value);
196 ctx.repo = cgit_get_repoinfo(value);
197 } else if (!strcmp(name, "p")) {
198 ctx.qry.page = xstrdup(value);
199 } else if (!strcmp(name, "url")) {
200 ctx.qry.url = xstrdup(value);
201 cgit_parse_url(value);
202 } else if (!strcmp(name, "qt")) {
203 ctx.qry.grep = xstrdup(value);
204 } else if (!strcmp(name, "q")) {
205 ctx.qry.search = xstrdup(value);
206 } else if (!strcmp(name, "h")) {
207 ctx.qry.head = xstrdup(value);
208 ctx.qry.has_symref = 1;
209 } else if (!strcmp(name, "id")) {
210 ctx.qry.sha1 = xstrdup(value);
211 ctx.qry.has_sha1 = 1;
212 } else if (!strcmp(name, "id2")) {
213 ctx.qry.sha2 = xstrdup(value);
214 ctx.qry.has_sha1 = 1;
215 } else if (!strcmp(name, "ofs")) {
216 ctx.qry.ofs = atoi(value);
217 } else if (!strcmp(name, "path")) {
218 ctx.qry.path = trim_end(value, '/');
219 } else if (!strcmp(name, "name")) {
220 ctx.qry.name = xstrdup(value);
221 } else if (!strcmp(name, "mimetype")) {
222 ctx.qry.mimetype = xstrdup(value);
223 } else if (!strcmp(name, "s")){
224 ctx.qry.sort = xstrdup(value);
225 } else if (!strcmp(name, "showmsg")) {
226 ctx.qry.showmsg = atoi(value);
227 } else if (!strcmp(name, "period")) {
228 ctx.qry.period = xstrdup(value);
229 }
230}
231
232char *xstrdupn(const char *str)
233{
234 return (str ? xstrdup(str) : NULL);
235}
236
237static void prepare_context(struct cgit_context *ctx)
238{
239 memset(ctx, 0, sizeof(ctx));
240 ctx->cfg.agefile = "info/web/last-modified";
241 ctx->cfg.nocache = 0;
242 ctx->cfg.cache_size = 0;
243 ctx->cfg.cache_dynamic_ttl = 5;
244 ctx->cfg.cache_max_create_time = 5;
245 ctx->cfg.cache_repo_ttl = 5;
246 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
247 ctx->cfg.cache_root_ttl = 5;
248 ctx->cfg.cache_scanrc_ttl = 15;
249 ctx->cfg.cache_static_ttl = -1;
250 ctx->cfg.css = "/cgit.css";
251 ctx->cfg.logo = "/cgit.png";
252 ctx->cfg.local_time = 0;
253 ctx->cfg.max_repo_count = 50;
254 ctx->cfg.max_commit_count = 50;
255 ctx->cfg.max_lock_attempts = 5;
256 ctx->cfg.max_msg_len = 80;
257 ctx->cfg.max_repodesc_len = 80;
258 ctx->cfg.max_stats = 0;
259 ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
260 ctx->cfg.renamelimit = -1;
261 ctx->cfg.robots = "index, nofollow";
262 ctx->cfg.root_title = "Git repository browser";
263 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
264 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
265 ctx->cfg.summary_branches = 10;
266 ctx->cfg.summary_log = 10;
267 ctx->cfg.summary_tags = 10;
268 ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
269 ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
270 ctx->env.https = xstrdupn(getenv("HTTPS"));
271 ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
272 ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
273 ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
274 ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
275 ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
276 ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
277 ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
278 ctx->page.mimetype = "text/html";
279 ctx->page.charset = PAGE_ENCODING;
280 ctx->page.filename = NULL;
281 ctx->page.size = 0;
282 ctx->page.modified = time(NULL);
283 ctx->page.expires = ctx->page.modified;
284 ctx->page.etag = NULL;
285 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
286 if (ctx->env.script_name)
287 ctx->cfg.script_name = ctx->env.script_name;
288 if (ctx->env.query_string)
289 ctx->qry.raw = ctx->env.query_string;
290 if (!ctx->env.cgit_config)
291 ctx->env.cgit_config = CGIT_CONFIG;
292}
293
294struct refmatch {
295 char *req_ref;
296 char *first_ref;
297 int match;
298};
299
300int find_current_ref(const char *refname, const unsigned char *sha1,
301 int flags, void *cb_data)
302{
303 struct refmatch *info;
304
305 info = (struct refmatch *)cb_data;
306 if (!strcmp(refname, info->req_ref))
307 info->match = 1;
308 if (!info->first_ref)
309 info->first_ref = xstrdup(refname);
310 return info->match;
311}
312
313char *find_default_branch(struct cgit_repo *repo)
314{
315 struct refmatch info;
316 char *ref;
317
318 info.req_ref = repo->defbranch;
319 info.first_ref = NULL;
320 info.match = 0;
321 for_each_branch_ref(find_current_ref, &info);
322 if (info.match)
323 ref = info.req_ref;
324 else
325 ref = info.first_ref;
326 if (ref)
327 ref = xstrdup(ref);
328 return ref;
329}
330
331static int prepare_repo_cmd(struct cgit_context *ctx)
332{
333 char *tmp;
334 unsigned char sha1[20];
335 int nongit = 0;
336
337 setenv("GIT_DIR", ctx->repo->path, 1);
338 setup_git_directory_gently(&nongit);
339 if (nongit) {
340 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
341 "config error");
342 tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
343 ctx->repo = NULL;
344 cgit_print_http_headers(ctx);
345 cgit_print_docstart(ctx);
346 cgit_print_pageheader(ctx);
347 cgit_print_error(tmp);
348 cgit_print_docend();
349 return 1;
350 }
351 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
352
353 if (!ctx->qry.head) {
354 ctx->qry.nohead = 1;
355 ctx->qry.head = find_default_branch(ctx->repo);
356 ctx->repo->defbranch = ctx->qry.head;
357 }
358
359 if (!ctx->qry.head) {
360 cgit_print_http_headers(ctx);
361 cgit_print_docstart(ctx);
362 cgit_print_pageheader(ctx);
363 cgit_print_error("Repository seems to be empty");
364 cgit_print_docend();
365 return 1;
366 }
367
368 if (get_sha1(ctx->qry.head, sha1)) {
369 tmp = xstrdup(ctx->qry.head);
370 ctx->qry.head = ctx->repo->defbranch;
371 ctx->page.status = 404;
372 ctx->page.statusmsg = "not found";
373 cgit_print_http_headers(ctx);
374 cgit_print_docstart(ctx);
375 cgit_print_pageheader(ctx);
376 cgit_print_error(fmt("Invalid branch: %s", tmp));
377 cgit_print_docend();
378 return 1;
379 }
380 return 0;
381}
382
383static void process_request(void *cbdata)
384{
385 struct cgit_context *ctx = cbdata;
386 struct cgit_cmd *cmd;
387
388 cmd = cgit_get_cmd(ctx);
389 if (!cmd) {
390 ctx->page.title = "cgit error";
391 cgit_print_http_headers(ctx);
392 cgit_print_docstart(ctx);
393 cgit_print_pageheader(ctx);
394 cgit_print_error("Invalid request");
395 cgit_print_docend();
396 return;
397 }
398
399 if (cmd->want_repo && !ctx->repo) {
400 cgit_print_http_headers(ctx);
401 cgit_print_docstart(ctx);
402 cgit_print_pageheader(ctx);
403 cgit_print_error(fmt("No repository selected"));
404 cgit_print_docend();
405 return;
406 }
407
408 if (ctx->repo && prepare_repo_cmd(ctx))
409 return;
410
411 if (cmd->want_layout) {
412 cgit_print_http_headers(ctx);
413 cgit_print_docstart(ctx);
414 cgit_print_pageheader(ctx);
415 }
416
417 cmd->fn(ctx);
418
419 if (cmd->want_layout)
420 cgit_print_docend();
421}
422
423int cmp_repos(const void *a, const void *b)
424{
425 const struct cgit_repo *ra = a, *rb = b;
426 return strcmp(ra->url, rb->url);
427}
428
429void print_repo(FILE *f, struct cgit_repo *repo)
430{
431 fprintf(f, "repo.url=%s\n", repo->url);
432 fprintf(f, "repo.name=%s\n", repo->name);
433 fprintf(f, "repo.path=%s\n", repo->path);
434 if (repo->owner)
435 fprintf(f, "repo.owner=%s\n", repo->owner);
436 if (repo->desc)
437 fprintf(f, "repo.desc=%s\n", repo->desc);
438 if (repo->readme)
439 fprintf(f, "repo.readme=%s\n", repo->readme);
440 fprintf(f, "\n");
441}
442
443void print_repolist(FILE *f, struct cgit_repolist *list, int start)
444{
445 int i;
446
447 for(i = start; i < list->count; i++)
448 print_repo(f, &list->repos[i]);
449}
450
451/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
452 * and return 0 on success.
453 */
454static int generate_cached_repolist(const char *path, const char *cached_rc)
455{
456 char *locked_rc;
457 int idx;
458 FILE *f;
459
460 locked_rc = xstrdup(fmt("%s.lock", cached_rc));
461 f = fopen(locked_rc, "wx");
462 if (!f) {
463 /* Inform about the error unless the lockfile already existed,
464 * since that only means we've got concurrent requests.
465 */
466 if (errno != EEXIST)
467 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
468 locked_rc, strerror(errno), errno);
469 return errno;
470 }
471 idx = cgit_repolist.count;
472 scan_tree(path);
473 print_repolist(f, &cgit_repolist, idx);
474 if (rename(locked_rc, cached_rc))
475 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
476 locked_rc, cached_rc, strerror(errno), errno);
477 fclose(f);
478 return 0;
479}
480
481static void process_cached_repolist(const char *path)
482{
483 struct stat st;
484 char *cached_rc;
485 time_t age;
486
487 cached_rc = xstrdup(fmt("%s/rc-%8x", ctx.cfg.cache_root,
488 hash_str(path)));
489
490 if (stat(cached_rc, &st)) {
491 /* Nothing is cached, we need to scan without forking. And
492 * if we fail to generate a cached repolist, we need to
493 * invoke scan_tree manually.
494 */
495 if (generate_cached_repolist(path, cached_rc))
496 scan_tree(path);
497 return;
498 }
499
500 parse_configfile(cached_rc, config_cb);
501
502 /* If the cached configfile hasn't expired, lets exit now */
503 age = time(NULL) - st.st_mtime;
504 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
505 return;
506
507 /* The cached repolist has been parsed, but it was old. So lets
508 * rescan the specified path and generate a new cached repolist
509 * in a child-process to avoid latency for the current request.
510 */
511 if (fork())
512 return;
513
514 exit(generate_cached_repolist(path, cached_rc));
515}
516
517static void cgit_parse_args(int argc, const char **argv)
518{
519 int i;
520 int scan = 0;
521
522 for (i = 1; i < argc; i++) {
523 if (!strncmp(argv[i], "--cache=", 8)) {
524 ctx.cfg.cache_root = xstrdup(argv[i]+8);
525 }
526 if (!strcmp(argv[i], "--nocache")) {
527 ctx.cfg.nocache = 1;
528 }
529 if (!strcmp(argv[i], "--nohttp")) {
530 ctx.env.no_http = "1";
531 }
532 if (!strncmp(argv[i], "--query=", 8)) {
533 ctx.qry.raw = xstrdup(argv[i]+8);
534 }
535 if (!strncmp(argv[i], "--repo=", 7)) {
536 ctx.qry.repo = xstrdup(argv[i]+7);
537 }
538 if (!strncmp(argv[i], "--page=", 7)) {
539 ctx.qry.page = xstrdup(argv[i]+7);
540 }
541 if (!strncmp(argv[i], "--head=", 7)) {
542 ctx.qry.head = xstrdup(argv[i]+7);
543 ctx.qry.has_symref = 1;
544 }
545 if (!strncmp(argv[i], "--sha1=", 7)) {
546 ctx.qry.sha1 = xstrdup(argv[i]+7);
547 ctx.qry.has_sha1 = 1;
548 }
549 if (!strncmp(argv[i], "--ofs=", 6)) {
550 ctx.qry.ofs = atoi(argv[i]+6);
551 }
552 if (!strncmp(argv[i], "--scan-tree=", 12) ||
553 !strncmp(argv[i], "--scan-path=", 12)) {
554 scan++;
555 scan_tree(argv[i] + 12);
556 }
557 }
558 if (scan) {
559 qsort(cgit_repolist.repos, cgit_repolist.count,
560 sizeof(struct cgit_repo), cmp_repos);
561 print_repolist(stdout, &cgit_repolist, 0);
562 exit(0);
563 }
564}
565
566static int calc_ttl()
567{
568 if (!ctx.repo)
569 return ctx.cfg.cache_root_ttl;
570
571 if (!ctx.qry.page)
572 return ctx.cfg.cache_repo_ttl;
573
574 if (ctx.qry.has_symref)
575 return ctx.cfg.cache_dynamic_ttl;
576
577 if (ctx.qry.has_sha1)
578 return ctx.cfg.cache_static_ttl;
579
580 return ctx.cfg.cache_repo_ttl;
581}
582
583int main(int argc, const char **argv)
584{
585 const char *path;
586 char *qry;
587 int err, ttl;
588
589 prepare_context(&ctx);
590 cgit_repolist.length = 0;
591 cgit_repolist.count = 0;
592 cgit_repolist.repos = NULL;
593
594 cgit_parse_args(argc, argv);
595 parse_configfile(ctx.env.cgit_config, config_cb);
596 ctx.repo = NULL;
597 http_parse_querystring(ctx.qry.raw, querystring_cb);
598
599 /* If virtual-root isn't specified in cgitrc, lets pretend
600 * that virtual-root equals SCRIPT_NAME.
601 */
602 if (!ctx.cfg.virtual_root)
603 ctx.cfg.virtual_root = ctx.cfg.script_name;
604
605 /* If no url parameter is specified on the querystring, lets
606 * use PATH_INFO as url. This allows cgit to work with virtual
607 * urls without the need for rewriterules in the webserver (as
608 * long as PATH_INFO is included in the cache lookup key).
609 */
610 path = ctx.env.path_info;
611 if (!ctx.qry.url && path) {
612 if (path[0] == '/')
613 path++;
614 ctx.qry.url = xstrdup(path);
615 if (ctx.qry.raw) {
616 qry = ctx.qry.raw;
617 ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
618 free(qry);
619 } else
620 ctx.qry.raw = xstrdup(ctx.qry.url);
621 cgit_parse_url(ctx.qry.url);
622 }
623
624 ttl = calc_ttl();
625 ctx.page.expires += ttl*60;
626 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
627 ctx.cfg.nocache = 1;
628 if (ctx.cfg.nocache)
629 ctx.cfg.cache_size = 0;
630 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
631 ctx.qry.raw, ttl, process_request, &ctx);
632 if (err)
633 cgit_print_error(fmt("Error processing page: %s (%d)",
634 strerror(err), err));
635 return err;
636}