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 repo_config(struct cgit_repo *repo, const char *name, const char *value)
46{
47 if (!strcmp(name, "name"))
48 repo->name = xstrdup(value);
49 else if (!strcmp(name, "clone-url"))
50 repo->clone_url = xstrdup(value);
51 else if (!strcmp(name, "desc"))
52 repo->desc = xstrdup(value);
53 else if (!strcmp(name, "owner"))
54 repo->owner = xstrdup(value);
55 else if (!strcmp(name, "defbranch"))
56 repo->defbranch = xstrdup(value);
57 else if (!strcmp(name, "snapshots"))
58 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
59 else if (!strcmp(name, "enable-log-filecount"))
60 repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
61 else if (!strcmp(name, "enable-log-linecount"))
62 repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
63 else if (!strcmp(name, "enable-remote-branches"))
64 repo->enable_remote_branches = atoi(value);
65 else if (!strcmp(name, "enable-subject-links"))
66 repo->enable_subject_links = atoi(value);
67 else if (!strcmp(name, "max-stats"))
68 repo->max_stats = cgit_find_stats_period(value, NULL);
69 else if (!strcmp(name, "module-link"))
70 repo->module_link= xstrdup(value);
71 else if (!strcmp(name, "section"))
72 repo->section = xstrdup(value);
73 else if (!strcmp(name, "readme") && value != NULL) {
74 if (*value == '/')
75 repo->readme = xstrdup(value);
76 else
77 repo->readme = xstrdup(fmt("%s/%s", repo->path, value));
78 } else if (ctx.cfg.enable_filter_overrides) {
79 if (!strcmp(name, "about-filter"))
80 repo->about_filter = new_filter(value, 0);
81 else if (!strcmp(name, "commit-filter"))
82 repo->commit_filter = new_filter(value, 0);
83 else if (!strcmp(name, "source-filter"))
84 repo->source_filter = new_filter(value, 1);
85 }
86}
87
88void config_cb(const char *name, const char *value)
89{
90 if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
91 ctx.cfg.section = xstrdup(value);
92 else if (!strcmp(name, "repo.url"))
93 ctx.repo = cgit_add_repo(value);
94 else if (ctx.repo && !strcmp(name, "repo.path"))
95 ctx.repo->path = trim_end(value, '/');
96 else if (ctx.repo && !prefixcmp(name, "repo."))
97 repo_config(ctx.repo, name + 5, value);
98 else if (!strcmp(name, "root-title"))
99 ctx.cfg.root_title = xstrdup(value);
100 else if (!strcmp(name, "root-desc"))
101 ctx.cfg.root_desc = xstrdup(value);
102 else if (!strcmp(name, "root-readme"))
103 ctx.cfg.root_readme = xstrdup(value);
104 else if (!strcmp(name, "css"))
105 ctx.cfg.css = xstrdup(value);
106 else if (!strcmp(name, "favicon"))
107 ctx.cfg.favicon = xstrdup(value);
108 else if (!strcmp(name, "footer"))
109 ctx.cfg.footer = xstrdup(value);
110 else if (!strcmp(name, "head-include"))
111 ctx.cfg.head_include = xstrdup(value);
112 else if (!strcmp(name, "header"))
113 ctx.cfg.header = xstrdup(value);
114 else if (!strcmp(name, "logo"))
115 ctx.cfg.logo = xstrdup(value);
116 else if (!strcmp(name, "index-header"))
117 ctx.cfg.index_header = xstrdup(value);
118 else if (!strcmp(name, "index-info"))
119 ctx.cfg.index_info = xstrdup(value);
120 else if (!strcmp(name, "logo-link"))
121 ctx.cfg.logo_link = xstrdup(value);
122 else if (!strcmp(name, "module-link"))
123 ctx.cfg.module_link = xstrdup(value);
124 else if (!strcmp(name, "virtual-root")) {
125 ctx.cfg.virtual_root = trim_end(value, '/');
126 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
127 ctx.cfg.virtual_root = "";
128 } else if (!strcmp(name, "nocache"))
129 ctx.cfg.nocache = atoi(value);
130 else if (!strcmp(name, "noplainemail"))
131 ctx.cfg.noplainemail = atoi(value);
132 else if (!strcmp(name, "noheader"))
133 ctx.cfg.noheader = atoi(value);
134 else if (!strcmp(name, "snapshots"))
135 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
136 else if (!strcmp(name, "enable-filter-overrides"))
137 ctx.cfg.enable_filter_overrides = atoi(value);
138 else if (!strcmp(name, "enable-index-links"))
139 ctx.cfg.enable_index_links = atoi(value);
140 else if (!strcmp(name, "enable-log-filecount"))
141 ctx.cfg.enable_log_filecount = atoi(value);
142 else if (!strcmp(name, "enable-log-linecount"))
143 ctx.cfg.enable_log_linecount = atoi(value);
144 else if (!strcmp(name, "enable-remote-branches"))
145 ctx.cfg.enable_remote_branches = atoi(value);
146 else if (!strcmp(name, "enable-subject-links"))
147 ctx.cfg.enable_subject_links = atoi(value);
148 else if (!strcmp(name, "enable-tree-linenumbers"))
149 ctx.cfg.enable_tree_linenumbers = atoi(value);
150 else if (!strcmp(name, "max-stats"))
151 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
152 else if (!strcmp(name, "cache-size"))
153 ctx.cfg.cache_size = atoi(value);
154 else if (!strcmp(name, "cache-root"))
155 ctx.cfg.cache_root = xstrdup(expand_macros(value));
156 else if (!strcmp(name, "cache-root-ttl"))
157 ctx.cfg.cache_root_ttl = atoi(value);
158 else if (!strcmp(name, "cache-repo-ttl"))
159 ctx.cfg.cache_repo_ttl = atoi(value);
160 else if (!strcmp(name, "cache-scanrc-ttl"))
161 ctx.cfg.cache_scanrc_ttl = atoi(value);
162 else if (!strcmp(name, "cache-static-ttl"))
163 ctx.cfg.cache_static_ttl = atoi(value);
164 else if (!strcmp(name, "cache-dynamic-ttl"))
165 ctx.cfg.cache_dynamic_ttl = atoi(value);
166 else if (!strcmp(name, "about-filter"))
167 ctx.cfg.about_filter = new_filter(value, 0);
168 else if (!strcmp(name, "commit-filter"))
169 ctx.cfg.commit_filter = new_filter(value, 0);
170 else if (!strcmp(name, "embedded"))
171 ctx.cfg.embedded = atoi(value);
172 else if (!strcmp(name, "max-atom-items"))
173 ctx.cfg.max_atom_items = atoi(value);
174 else if (!strcmp(name, "max-message-length"))
175 ctx.cfg.max_msg_len = atoi(value);
176 else if (!strcmp(name, "max-repodesc-length"))
177 ctx.cfg.max_repodesc_len = atoi(value);
178 else if (!strcmp(name, "max-blob-size"))
179 ctx.cfg.max_blob_size = atoi(value);
180 else if (!strcmp(name, "max-repo-count"))
181 ctx.cfg.max_repo_count = atoi(value);
182 else if (!strcmp(name, "max-commit-count"))
183 ctx.cfg.max_commit_count = atoi(value);
184 else if (!strcmp(name, "scan-path"))
185 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
186 process_cached_repolist(expand_macros(value));
187 else
188 scan_tree(expand_macros(value), repo_config);
189 else if (!strcmp(name, "source-filter"))
190 ctx.cfg.source_filter = new_filter(value, 1);
191 else if (!strcmp(name, "summary-log"))
192 ctx.cfg.summary_log = atoi(value);
193 else if (!strcmp(name, "summary-branches"))
194 ctx.cfg.summary_branches = atoi(value);
195 else if (!strcmp(name, "summary-tags"))
196 ctx.cfg.summary_tags = atoi(value);
197 else if (!strcmp(name, "side-by-side-diffs"))
198 ctx.cfg.ssdiff = atoi(value);
199 else if (!strcmp(name, "agefile"))
200 ctx.cfg.agefile = xstrdup(value);
201 else if (!strcmp(name, "renamelimit"))
202 ctx.cfg.renamelimit = atoi(value);
203 else if (!strcmp(name, "robots"))
204 ctx.cfg.robots = xstrdup(value);
205 else if (!strcmp(name, "clone-prefix"))
206 ctx.cfg.clone_prefix = xstrdup(value);
207 else if (!strcmp(name, "local-time"))
208 ctx.cfg.local_time = atoi(value);
209 else if (!prefixcmp(name, "mimetype."))
210 add_mimetype(name + 9, value);
211 else if (!strcmp(name, "include"))
212 parse_configfile(expand_macros(value), config_cb);
213}
214
215static void querystring_cb(const char *name, const char *value)
216{
217 if (!value)
218 value = "";
219
220 if (!strcmp(name,"r")) {
221 ctx.qry.repo = xstrdup(value);
222 ctx.repo = cgit_get_repoinfo(value);
223 } else if (!strcmp(name, "p")) {
224 ctx.qry.page = xstrdup(value);
225 } else if (!strcmp(name, "url")) {
226 if (*value == '/')
227 value++;
228 ctx.qry.url = xstrdup(value);
229 cgit_parse_url(value);
230 } else if (!strcmp(name, "qt")) {
231 ctx.qry.grep = xstrdup(value);
232 } else if (!strcmp(name, "q")) {
233 ctx.qry.search = xstrdup(value);
234 } else if (!strcmp(name, "h")) {
235 ctx.qry.head = xstrdup(value);
236 ctx.qry.has_symref = 1;
237 } else if (!strcmp(name, "id")) {
238 ctx.qry.sha1 = xstrdup(value);
239 ctx.qry.has_sha1 = 1;
240 } else if (!strcmp(name, "id2")) {
241 ctx.qry.sha2 = xstrdup(value);
242 ctx.qry.has_sha1 = 1;
243 } else if (!strcmp(name, "ofs")) {
244 ctx.qry.ofs = atoi(value);
245 } else if (!strcmp(name, "path")) {
246 ctx.qry.path = trim_end(value, '/');
247 } else if (!strcmp(name, "name")) {
248 ctx.qry.name = xstrdup(value);
249 } else if (!strcmp(name, "mimetype")) {
250 ctx.qry.mimetype = xstrdup(value);
251 } else if (!strcmp(name, "s")){
252 ctx.qry.sort = xstrdup(value);
253 } else if (!strcmp(name, "showmsg")) {
254 ctx.qry.showmsg = atoi(value);
255 } else if (!strcmp(name, "period")) {
256 ctx.qry.period = xstrdup(value);
257 } else if (!strcmp(name, "ss")) {
258 ctx.qry.ssdiff = atoi(value);
259 } else if (!strcmp(name, "all")) {
260 ctx.qry.show_all = atoi(value);
261 } else if (!strcmp(name, "context")) {
262 ctx.qry.context = atoi(value);
263 }
264}
265
266char *xstrdupn(const char *str)
267{
268 return (str ? xstrdup(str) : NULL);
269}
270
271static void prepare_context(struct cgit_context *ctx)
272{
273 memset(ctx, 0, sizeof(*ctx));
274 ctx->cfg.agefile = "info/web/last-modified";
275 ctx->cfg.nocache = 0;
276 ctx->cfg.cache_size = 0;
277 ctx->cfg.cache_dynamic_ttl = 5;
278 ctx->cfg.cache_max_create_time = 5;
279 ctx->cfg.cache_repo_ttl = 5;
280 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
281 ctx->cfg.cache_root_ttl = 5;
282 ctx->cfg.cache_scanrc_ttl = 15;
283 ctx->cfg.cache_static_ttl = -1;
284 ctx->cfg.css = "/cgit.css";
285 ctx->cfg.logo = "/cgit.png";
286 ctx->cfg.local_time = 0;
287 ctx->cfg.enable_tree_linenumbers = 1;
288 ctx->cfg.max_repo_count = 50;
289 ctx->cfg.max_commit_count = 50;
290 ctx->cfg.max_lock_attempts = 5;
291 ctx->cfg.max_msg_len = 80;
292 ctx->cfg.max_repodesc_len = 80;
293 ctx->cfg.max_blob_size = 0;
294 ctx->cfg.max_stats = 0;
295 ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
296 ctx->cfg.renamelimit = -1;
297 ctx->cfg.robots = "index, nofollow";
298 ctx->cfg.root_title = "Git repository browser";
299 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
300 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
301 ctx->cfg.section = "";
302 ctx->cfg.summary_branches = 10;
303 ctx->cfg.summary_log = 10;
304 ctx->cfg.summary_tags = 10;
305 ctx->cfg.max_atom_items = 10;
306 ctx->cfg.ssdiff = 0;
307 ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
308 ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
309 ctx->env.https = xstrdupn(getenv("HTTPS"));
310 ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
311 ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
312 ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
313 ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
314 ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
315 ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
316 ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
317 ctx->page.mimetype = "text/html";
318 ctx->page.charset = PAGE_ENCODING;
319 ctx->page.filename = NULL;
320 ctx->page.size = 0;
321 ctx->page.modified = time(NULL);
322 ctx->page.expires = ctx->page.modified;
323 ctx->page.etag = NULL;
324 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
325 if (ctx->env.script_name)
326 ctx->cfg.script_name = ctx->env.script_name;
327 if (ctx->env.query_string)
328 ctx->qry.raw = ctx->env.query_string;
329 if (!ctx->env.cgit_config)
330 ctx->env.cgit_config = CGIT_CONFIG;
331}
332
333struct refmatch {
334 char *req_ref;
335 char *first_ref;
336 int match;
337};
338
339int find_current_ref(const char *refname, const unsigned char *sha1,
340 int flags, void *cb_data)
341{
342 struct refmatch *info;
343
344 info = (struct refmatch *)cb_data;
345 if (!strcmp(refname, info->req_ref))
346 info->match = 1;
347 if (!info->first_ref)
348 info->first_ref = xstrdup(refname);
349 return info->match;
350}
351
352char *find_default_branch(struct cgit_repo *repo)
353{
354 struct refmatch info;
355 char *ref;
356
357 info.req_ref = repo->defbranch;
358 info.first_ref = NULL;
359 info.match = 0;
360 for_each_branch_ref(find_current_ref, &info);
361 if (info.match)
362 ref = info.req_ref;
363 else
364 ref = info.first_ref;
365 if (ref)
366 ref = xstrdup(ref);
367 return ref;
368}
369
370static int prepare_repo_cmd(struct cgit_context *ctx)
371{
372 char *tmp;
373 unsigned char sha1[20];
374 int nongit = 0;
375
376 setenv("GIT_DIR", ctx->repo->path, 1);
377 setup_git_directory_gently(&nongit);
378 if (nongit) {
379 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
380 "config error");
381 tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
382 ctx->repo = NULL;
383 cgit_print_http_headers(ctx);
384 cgit_print_docstart(ctx);
385 cgit_print_pageheader(ctx);
386 cgit_print_error(tmp);
387 cgit_print_docend();
388 return 1;
389 }
390 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
391
392 if (!ctx->qry.head) {
393 ctx->qry.nohead = 1;
394 ctx->qry.head = find_default_branch(ctx->repo);
395 ctx->repo->defbranch = ctx->qry.head;
396 }
397
398 if (!ctx->qry.head) {
399 cgit_print_http_headers(ctx);
400 cgit_print_docstart(ctx);
401 cgit_print_pageheader(ctx);
402 cgit_print_error("Repository seems to be empty");
403 cgit_print_docend();
404 return 1;
405 }
406
407 if (get_sha1(ctx->qry.head, sha1)) {
408 tmp = xstrdup(ctx->qry.head);
409 ctx->qry.head = ctx->repo->defbranch;
410 ctx->page.status = 404;
411 ctx->page.statusmsg = "not found";
412 cgit_print_http_headers(ctx);
413 cgit_print_docstart(ctx);
414 cgit_print_pageheader(ctx);
415 cgit_print_error(fmt("Invalid branch: %s", tmp));
416 cgit_print_docend();
417 return 1;
418 }
419 return 0;
420}
421
422static void process_request(void *cbdata)
423{
424 struct cgit_context *ctx = cbdata;
425 struct cgit_cmd *cmd;
426
427 cmd = cgit_get_cmd(ctx);
428 if (!cmd) {
429 ctx->page.title = "cgit error";
430 cgit_print_http_headers(ctx);
431 cgit_print_docstart(ctx);
432 cgit_print_pageheader(ctx);
433 cgit_print_error("Invalid request");
434 cgit_print_docend();
435 return;
436 }
437
438 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
439 * in-project path limit to be made available at ctx->qry.vpath.
440 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
441 */
442 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
443
444 if (cmd->want_repo && !ctx->repo) {
445 cgit_print_http_headers(ctx);
446 cgit_print_docstart(ctx);
447 cgit_print_pageheader(ctx);
448 cgit_print_error(fmt("No repository selected"));
449 cgit_print_docend();
450 return;
451 }
452
453 if (ctx->repo && prepare_repo_cmd(ctx))
454 return;
455
456 if (cmd->want_layout) {
457 cgit_print_http_headers(ctx);
458 cgit_print_docstart(ctx);
459 cgit_print_pageheader(ctx);
460 }
461
462 cmd->fn(ctx);
463
464 if (cmd->want_layout)
465 cgit_print_docend();
466}
467
468int cmp_repos(const void *a, const void *b)
469{
470 const struct cgit_repo *ra = a, *rb = b;
471 return strcmp(ra->url, rb->url);
472}
473
474char *build_snapshot_setting(int bitmap)
475{
476 const struct cgit_snapshot_format *f;
477 char *result = xstrdup("");
478 char *tmp;
479 int len;
480
481 for (f = cgit_snapshot_formats; f->suffix; f++) {
482 if (f->bit & bitmap) {
483 tmp = result;
484 result = xstrdup(fmt("%s%s ", tmp, f->suffix));
485 free(tmp);
486 }
487 }
488 len = strlen(result);
489 if (len)
490 result[len - 1] = '\0';
491 return result;
492}
493
494char *get_first_line(char *txt)
495{
496 char *t = xstrdup(txt);
497 char *p = strchr(t, '\n');
498 if (p)
499 *p = '\0';
500 return t;
501}
502
503void print_repo(FILE *f, struct cgit_repo *repo)
504{
505 fprintf(f, "repo.url=%s\n", repo->url);
506 fprintf(f, "repo.name=%s\n", repo->name);
507 fprintf(f, "repo.path=%s\n", repo->path);
508 if (repo->owner)
509 fprintf(f, "repo.owner=%s\n", repo->owner);
510 if (repo->desc) {
511 char *tmp = get_first_line(repo->desc);
512 fprintf(f, "repo.desc=%s\n", tmp);
513 free(tmp);
514 }
515 if (repo->readme)
516 fprintf(f, "repo.readme=%s\n", repo->readme);
517 if (repo->defbranch)
518 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
519 if (repo->module_link)
520 fprintf(f, "repo.module-link=%s\n", repo->module_link);
521 if (repo->section)
522 fprintf(f, "repo.section=%s\n", repo->section);
523 if (repo->clone_url)
524 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
525 fprintf(f, "repo.enable-log-filecount=%d\n",
526 repo->enable_log_filecount);
527 fprintf(f, "repo.enable-log-linecount=%d\n",
528 repo->enable_log_linecount);
529 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
530 fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
531 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
532 fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
533 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
534 fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
535 if (repo->snapshots != ctx.cfg.snapshots) {
536 char *tmp = build_snapshot_setting(repo->snapshots);
537 fprintf(f, "repo.snapshots=%s\n", tmp);
538 free(tmp);
539 }
540 if (repo->max_stats != ctx.cfg.max_stats)
541 fprintf(f, "repo.max-stats=%s\n",
542 cgit_find_stats_periodname(repo->max_stats));
543 fprintf(f, "\n");
544}
545
546void print_repolist(FILE *f, struct cgit_repolist *list, int start)
547{
548 int i;
549
550 for(i = start; i < list->count; i++)
551 print_repo(f, &list->repos[i]);
552}
553
554/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
555 * and return 0 on success.
556 */
557static int generate_cached_repolist(const char *path, const char *cached_rc)
558{
559 char *locked_rc;
560 int idx;
561 FILE *f;
562
563 locked_rc = xstrdup(fmt("%s.lock", cached_rc));
564 f = fopen(locked_rc, "wx");
565 if (!f) {
566 /* Inform about the error unless the lockfile already existed,
567 * since that only means we've got concurrent requests.
568 */
569 if (errno != EEXIST)
570 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
571 locked_rc, strerror(errno), errno);
572 return errno;
573 }
574 idx = cgit_repolist.count;
575 scan_tree(path, repo_config);
576 print_repolist(f, &cgit_repolist, idx);
577 if (rename(locked_rc, cached_rc))
578 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
579 locked_rc, cached_rc, strerror(errno), errno);
580 fclose(f);
581 return 0;
582}
583
584static void process_cached_repolist(const char *path)
585{
586 struct stat st;
587 char *cached_rc;
588 time_t age;
589
590 cached_rc = xstrdup(fmt("%s/rc-%8x", ctx.cfg.cache_root,
591 hash_str(path)));
592
593 if (stat(cached_rc, &st)) {
594 /* Nothing is cached, we need to scan without forking. And
595 * if we fail to generate a cached repolist, we need to
596 * invoke scan_tree manually.
597 */
598 if (generate_cached_repolist(path, cached_rc))
599 scan_tree(path, repo_config);
600 return;
601 }
602
603 parse_configfile(cached_rc, config_cb);
604
605 /* If the cached configfile hasn't expired, lets exit now */
606 age = time(NULL) - st.st_mtime;
607 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
608 return;
609
610 /* The cached repolist has been parsed, but it was old. So lets
611 * rescan the specified path and generate a new cached repolist
612 * in a child-process to avoid latency for the current request.
613 */
614 if (fork())
615 return;
616
617 exit(generate_cached_repolist(path, cached_rc));
618}
619
620static void cgit_parse_args(int argc, const char **argv)
621{
622 int i;
623 int scan = 0;
624
625 for (i = 1; i < argc; i++) {
626 if (!strncmp(argv[i], "--cache=", 8)) {
627 ctx.cfg.cache_root = xstrdup(argv[i]+8);
628 }
629 if (!strcmp(argv[i], "--nocache")) {
630 ctx.cfg.nocache = 1;
631 }
632 if (!strcmp(argv[i], "--nohttp")) {
633 ctx.env.no_http = "1";
634 }
635 if (!strncmp(argv[i], "--query=", 8)) {
636 ctx.qry.raw = xstrdup(argv[i]+8);
637 }
638 if (!strncmp(argv[i], "--repo=", 7)) {
639 ctx.qry.repo = xstrdup(argv[i]+7);
640 }
641 if (!strncmp(argv[i], "--page=", 7)) {
642 ctx.qry.page = xstrdup(argv[i]+7);
643 }
644 if (!strncmp(argv[i], "--head=", 7)) {
645 ctx.qry.head = xstrdup(argv[i]+7);
646 ctx.qry.has_symref = 1;
647 }
648 if (!strncmp(argv[i], "--sha1=", 7)) {
649 ctx.qry.sha1 = xstrdup(argv[i]+7);
650 ctx.qry.has_sha1 = 1;
651 }
652 if (!strncmp(argv[i], "--ofs=", 6)) {
653 ctx.qry.ofs = atoi(argv[i]+6);
654 }
655 if (!strncmp(argv[i], "--scan-tree=", 12) ||
656 !strncmp(argv[i], "--scan-path=", 12)) {
657 /* HACK: the global snapshot bitmask defines the
658 * set of allowed snapshot formats, but the config
659 * file hasn't been parsed yet so the mask is
660 * currently 0. By setting all bits high before
661 * scanning we make sure that any in-repo cgitrc
662 * snapshot setting is respected by scan_tree().
663 * BTW: we assume that there'll never be more than
664 * 255 different snapshot formats supported by cgit...
665 */
666 ctx.cfg.snapshots = 0xFF;
667 scan++;
668 scan_tree(argv[i] + 12, repo_config);
669 }
670 }
671 if (scan) {
672 qsort(cgit_repolist.repos, cgit_repolist.count,
673 sizeof(struct cgit_repo), cmp_repos);
674 print_repolist(stdout, &cgit_repolist, 0);
675 exit(0);
676 }
677}
678
679static int calc_ttl()
680{
681 if (!ctx.repo)
682 return ctx.cfg.cache_root_ttl;
683
684 if (!ctx.qry.page)
685 return ctx.cfg.cache_repo_ttl;
686
687 if (ctx.qry.has_symref)
688 return ctx.cfg.cache_dynamic_ttl;
689
690 if (ctx.qry.has_sha1)
691 return ctx.cfg.cache_static_ttl;
692
693 return ctx.cfg.cache_repo_ttl;
694}
695
696int main(int argc, const char **argv)
697{
698 const char *path;
699 char *qry;
700 int err, ttl;
701
702 prepare_context(&ctx);
703 cgit_repolist.length = 0;
704 cgit_repolist.count = 0;
705 cgit_repolist.repos = NULL;
706
707 cgit_parse_args(argc, argv);
708 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
709 ctx.repo = NULL;
710 http_parse_querystring(ctx.qry.raw, querystring_cb);
711
712 /* If virtual-root isn't specified in cgitrc, lets pretend
713 * that virtual-root equals SCRIPT_NAME.
714 */
715 if (!ctx.cfg.virtual_root)
716 ctx.cfg.virtual_root = ctx.cfg.script_name;
717
718 /* If no url parameter is specified on the querystring, lets
719 * use PATH_INFO as url. This allows cgit to work with virtual
720 * urls without the need for rewriterules in the webserver (as
721 * long as PATH_INFO is included in the cache lookup key).
722 */
723 path = ctx.env.path_info;
724 if (!ctx.qry.url && path) {
725 if (path[0] == '/')
726 path++;
727 ctx.qry.url = xstrdup(path);
728 if (ctx.qry.raw) {
729 qry = ctx.qry.raw;
730 ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
731 free(qry);
732 } else
733 ctx.qry.raw = xstrdup(ctx.qry.url);
734 cgit_parse_url(ctx.qry.url);
735 }
736
737 ttl = calc_ttl();
738 ctx.page.expires += ttl*60;
739 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
740 ctx.cfg.nocache = 1;
741 if (ctx.cfg.nocache)
742 ctx.cfg.cache_size = 0;
743 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
744 ctx.qry.raw, ttl, process_request, &ctx);
745 if (err)
746 cgit_print_error(fmt("Error processing page: %s (%d)",
747 strerror(err), err));
748 return err;
749}