cgit.c (view raw)
1/* cgit.c: cgi for the git scm
2 *
3 * Copyright (C) 2006 Lars Hjemli
4 * Copyright (C) 2010 Jason A. Donenfeld <Jason@zx2c4.com>
5 *
6 * Licensed under GNU General Public License v2
7 * (see COPYING for full license text)
8 */
9
10#include "cgit.h"
11#include "cache.h"
12#include "cmd.h"
13#include "configfile.h"
14#include "html.h"
15#include "ui-shared.h"
16#include "ui-stats.h"
17#include "scan-tree.h"
18
19const char *cgit_version = CGIT_VERSION;
20
21void add_mimetype(const char *name, const char *value)
22{
23 struct string_list_item *item;
24
25 item = string_list_insert(&ctx.cfg.mimetypes, xstrdup(name));
26 item->util = xstrdup(value);
27}
28
29struct cgit_filter *new_filter(const char *cmd, filter_type filtertype)
30{
31 struct cgit_filter *f;
32 int extra_args;
33
34 if (!cmd || !cmd[0])
35 return NULL;
36
37 switch (filtertype) {
38 case SOURCE:
39 extra_args = 1;
40 break;
41
42 case ABOUT:
43 case COMMIT:
44 default:
45 extra_args = 0;
46 break;
47 }
48
49 f = xmalloc(sizeof(struct cgit_filter));
50 f->cmd = xstrdup(cmd);
51 f->argv = xmalloc((2 + extra_args) * sizeof(char *));
52 f->argv[0] = f->cmd;
53 f->argv[1] = NULL;
54 return f;
55}
56
57static void process_cached_repolist(const char *path);
58
59void repo_config(struct cgit_repo *repo, const char *name, const char *value)
60{
61 if (!strcmp(name, "name"))
62 repo->name = xstrdup(value);
63 else if (!strcmp(name, "clone-url"))
64 repo->clone_url = xstrdup(value);
65 else if (!strcmp(name, "desc"))
66 repo->desc = xstrdup(value);
67 else if (!strcmp(name, "owner"))
68 repo->owner = xstrdup(value);
69 else if (!strcmp(name, "defbranch"))
70 repo->defbranch = xstrdup(value);
71 else if (!strcmp(name, "snapshots"))
72 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
73 else if (!strcmp(name, "enable-commit-graph"))
74 repo->enable_commit_graph = ctx.cfg.enable_commit_graph * atoi(value);
75 else if (!strcmp(name, "enable-log-filecount"))
76 repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
77 else if (!strcmp(name, "enable-log-linecount"))
78 repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
79 else if (!strcmp(name, "enable-remote-branches"))
80 repo->enable_remote_branches = atoi(value);
81 else if (!strcmp(name, "enable-subject-links"))
82 repo->enable_subject_links = atoi(value);
83 else if (!strcmp(name, "max-stats"))
84 repo->max_stats = cgit_find_stats_period(value, NULL);
85 else if (!strcmp(name, "module-link"))
86 repo->module_link= xstrdup(value);
87 else if (!strcmp(name, "section"))
88 repo->section = xstrdup(value);
89 else if (!strcmp(name, "readme") && value != NULL)
90 repo->readme = xstrdup(value);
91 else if (!strcmp(name, "logo") && value != NULL)
92 repo->logo = xstrdup(value);
93 else if (!strcmp(name, "logo-link") && value != NULL)
94 repo->logo_link = xstrdup(value);
95 else if (ctx.cfg.enable_filter_overrides) {
96 if (!strcmp(name, "about-filter"))
97 repo->about_filter = new_filter(value, ABOUT);
98 else if (!strcmp(name, "commit-filter"))
99 repo->commit_filter = new_filter(value, COMMIT);
100 else if (!strcmp(name, "source-filter"))
101 repo->source_filter = new_filter(value, SOURCE);
102 }
103}
104
105void config_cb(const char *name, const char *value)
106{
107 if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
108 ctx.cfg.section = xstrdup(value);
109 else if (!strcmp(name, "repo.url"))
110 ctx.repo = cgit_add_repo(value);
111 else if (ctx.repo && !strcmp(name, "repo.path"))
112 ctx.repo->path = trim_end(value, '/');
113 else if (ctx.repo && !prefixcmp(name, "repo."))
114 repo_config(ctx.repo, name + 5, value);
115 else if (!strcmp(name, "readme"))
116 ctx.cfg.readme = xstrdup(value);
117 else if (!strcmp(name, "root-title"))
118 ctx.cfg.root_title = xstrdup(value);
119 else if (!strcmp(name, "root-desc"))
120 ctx.cfg.root_desc = xstrdup(value);
121 else if (!strcmp(name, "root-readme"))
122 ctx.cfg.root_readme = xstrdup(value);
123 else if (!strcmp(name, "css"))
124 ctx.cfg.css = xstrdup(value);
125 else if (!strcmp(name, "favicon"))
126 ctx.cfg.favicon = xstrdup(value);
127 else if (!strcmp(name, "footer"))
128 ctx.cfg.footer = xstrdup(value);
129 else if (!strcmp(name, "head-include"))
130 ctx.cfg.head_include = xstrdup(value);
131 else if (!strcmp(name, "header"))
132 ctx.cfg.header = xstrdup(value);
133 else if (!strcmp(name, "logo"))
134 ctx.cfg.logo = xstrdup(value);
135 else if (!strcmp(name, "index-header"))
136 ctx.cfg.index_header = xstrdup(value);
137 else if (!strcmp(name, "index-info"))
138 ctx.cfg.index_info = xstrdup(value);
139 else if (!strcmp(name, "logo-link"))
140 ctx.cfg.logo_link = xstrdup(value);
141 else if (!strcmp(name, "module-link"))
142 ctx.cfg.module_link = xstrdup(value);
143 else if (!strcmp(name, "strict-export"))
144 ctx.cfg.strict_export = xstrdup(value);
145 else if (!strcmp(name, "virtual-root")) {
146 ctx.cfg.virtual_root = trim_end(value, '/');
147 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
148 ctx.cfg.virtual_root = "";
149 } else if (!strcmp(name, "nocache"))
150 ctx.cfg.nocache = atoi(value);
151 else if (!strcmp(name, "noplainemail"))
152 ctx.cfg.noplainemail = atoi(value);
153 else if (!strcmp(name, "noheader"))
154 ctx.cfg.noheader = atoi(value);
155 else if (!strcmp(name, "snapshots"))
156 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
157 else if (!strcmp(name, "enable-filter-overrides"))
158 ctx.cfg.enable_filter_overrides = atoi(value);
159 else if (!strcmp(name, "enable-gitweb-owner"))
160 ctx.cfg.enable_gitweb_owner = atoi(value);
161 else if (!strcmp(name, "enable-index-links"))
162 ctx.cfg.enable_index_links = atoi(value);
163 else if (!strcmp(name, "enable-commit-graph"))
164 ctx.cfg.enable_commit_graph = atoi(value);
165 else if (!strcmp(name, "enable-log-filecount"))
166 ctx.cfg.enable_log_filecount = atoi(value);
167 else if (!strcmp(name, "enable-log-linecount"))
168 ctx.cfg.enable_log_linecount = atoi(value);
169 else if (!strcmp(name, "enable-remote-branches"))
170 ctx.cfg.enable_remote_branches = atoi(value);
171 else if (!strcmp(name, "enable-subject-links"))
172 ctx.cfg.enable_subject_links = atoi(value);
173 else if (!strcmp(name, "enable-tree-linenumbers"))
174 ctx.cfg.enable_tree_linenumbers = atoi(value);
175 else if (!strcmp(name, "max-stats"))
176 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
177 else if (!strcmp(name, "cache-size"))
178 ctx.cfg.cache_size = atoi(value);
179 else if (!strcmp(name, "cache-root"))
180 ctx.cfg.cache_root = xstrdup(expand_macros(value));
181 else if (!strcmp(name, "cache-root-ttl"))
182 ctx.cfg.cache_root_ttl = atoi(value);
183 else if (!strcmp(name, "cache-repo-ttl"))
184 ctx.cfg.cache_repo_ttl = atoi(value);
185 else if (!strcmp(name, "cache-scanrc-ttl"))
186 ctx.cfg.cache_scanrc_ttl = atoi(value);
187 else if (!strcmp(name, "cache-static-ttl"))
188 ctx.cfg.cache_static_ttl = atoi(value);
189 else if (!strcmp(name, "cache-dynamic-ttl"))
190 ctx.cfg.cache_dynamic_ttl = atoi(value);
191 else if (!strcmp(name, "about-filter"))
192 ctx.cfg.about_filter = new_filter(value, ABOUT);
193 else if (!strcmp(name, "commit-filter"))
194 ctx.cfg.commit_filter = new_filter(value, COMMIT);
195 else if (!strcmp(name, "embedded"))
196 ctx.cfg.embedded = atoi(value);
197 else if (!strcmp(name, "max-atom-items"))
198 ctx.cfg.max_atom_items = atoi(value);
199 else if (!strcmp(name, "max-message-length"))
200 ctx.cfg.max_msg_len = atoi(value);
201 else if (!strcmp(name, "max-repodesc-length"))
202 ctx.cfg.max_repodesc_len = atoi(value);
203 else if (!strcmp(name, "max-blob-size"))
204 ctx.cfg.max_blob_size = atoi(value);
205 else if (!strcmp(name, "max-repo-count"))
206 ctx.cfg.max_repo_count = atoi(value);
207 else if (!strcmp(name, "max-commit-count"))
208 ctx.cfg.max_commit_count = atoi(value);
209 else if (!strcmp(name, "project-list"))
210 ctx.cfg.project_list = xstrdup(expand_macros(value));
211 else if (!strcmp(name, "scan-path"))
212 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
213 process_cached_repolist(expand_macros(value));
214 else if (ctx.cfg.project_list)
215 scan_projects(expand_macros(value),
216 ctx.cfg.project_list, repo_config);
217 else
218 scan_tree(expand_macros(value), repo_config);
219 else if (!strcmp(name, "scan-hidden-path"))
220 ctx.cfg.scan_hidden_path = atoi(value);
221 else if (!strcmp(name, "section-from-path"))
222 ctx.cfg.section_from_path = atoi(value);
223 else if (!strcmp(name, "source-filter"))
224 ctx.cfg.source_filter = new_filter(value, SOURCE);
225 else if (!strcmp(name, "summary-log"))
226 ctx.cfg.summary_log = atoi(value);
227 else if (!strcmp(name, "summary-branches"))
228 ctx.cfg.summary_branches = atoi(value);
229 else if (!strcmp(name, "summary-tags"))
230 ctx.cfg.summary_tags = atoi(value);
231 else if (!strcmp(name, "side-by-side-diffs"))
232 ctx.cfg.ssdiff = atoi(value);
233 else if (!strcmp(name, "agefile"))
234 ctx.cfg.agefile = xstrdup(value);
235 else if (!strcmp(name, "renamelimit"))
236 ctx.cfg.renamelimit = atoi(value);
237 else if (!strcmp(name, "remove-suffix"))
238 ctx.cfg.remove_suffix = atoi(value);
239 else if (!strcmp(name, "robots"))
240 ctx.cfg.robots = xstrdup(value);
241 else if (!strcmp(name, "clone-prefix"))
242 ctx.cfg.clone_prefix = xstrdup(value);
243 else if (!strcmp(name, "local-time"))
244 ctx.cfg.local_time = atoi(value);
245 else if (!prefixcmp(name, "mimetype."))
246 add_mimetype(name + 9, value);
247 else if (!strcmp(name, "include"))
248 parse_configfile(expand_macros(value), config_cb);
249}
250
251static void querystring_cb(const char *name, const char *value)
252{
253 if (!value)
254 value = "";
255
256 if (!strcmp(name,"r")) {
257 ctx.qry.repo = xstrdup(value);
258 ctx.repo = cgit_get_repoinfo(value);
259 } else if (!strcmp(name, "p")) {
260 ctx.qry.page = xstrdup(value);
261 } else if (!strcmp(name, "url")) {
262 if (*value == '/')
263 value++;
264 ctx.qry.url = xstrdup(value);
265 cgit_parse_url(value);
266 } else if (!strcmp(name, "qt")) {
267 ctx.qry.grep = xstrdup(value);
268 } else if (!strcmp(name, "q")) {
269 ctx.qry.search = xstrdup(value);
270 } else if (!strcmp(name, "h")) {
271 ctx.qry.head = xstrdup(value);
272 ctx.qry.has_symref = 1;
273 } else if (!strcmp(name, "id")) {
274 ctx.qry.sha1 = xstrdup(value);
275 ctx.qry.has_sha1 = 1;
276 } else if (!strcmp(name, "id2")) {
277 ctx.qry.sha2 = xstrdup(value);
278 ctx.qry.has_sha1 = 1;
279 } else if (!strcmp(name, "ofs")) {
280 ctx.qry.ofs = atoi(value);
281 } else if (!strcmp(name, "path")) {
282 ctx.qry.path = trim_end(value, '/');
283 } else if (!strcmp(name, "name")) {
284 ctx.qry.name = xstrdup(value);
285 } else if (!strcmp(name, "mimetype")) {
286 ctx.qry.mimetype = xstrdup(value);
287 } else if (!strcmp(name, "s")){
288 ctx.qry.sort = xstrdup(value);
289 } else if (!strcmp(name, "showmsg")) {
290 ctx.qry.showmsg = atoi(value);
291 } else if (!strcmp(name, "period")) {
292 ctx.qry.period = xstrdup(value);
293 } else if (!strcmp(name, "ss")) {
294 ctx.qry.ssdiff = atoi(value);
295 } else if (!strcmp(name, "all")) {
296 ctx.qry.show_all = atoi(value);
297 } else if (!strcmp(name, "context")) {
298 ctx.qry.context = atoi(value);
299 } else if (!strcmp(name, "ignorews")) {
300 ctx.qry.ignorews = atoi(value);
301 }
302}
303
304char *xstrdupn(const char *str)
305{
306 return (str ? xstrdup(str) : NULL);
307}
308
309static void prepare_context(struct cgit_context *ctx)
310{
311 memset(ctx, 0, sizeof(*ctx));
312 ctx->cfg.agefile = "info/web/last-modified";
313 ctx->cfg.nocache = 0;
314 ctx->cfg.cache_size = 0;
315 ctx->cfg.cache_dynamic_ttl = 5;
316 ctx->cfg.cache_max_create_time = 5;
317 ctx->cfg.cache_repo_ttl = 5;
318 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
319 ctx->cfg.cache_root_ttl = 5;
320 ctx->cfg.cache_scanrc_ttl = 15;
321 ctx->cfg.cache_static_ttl = -1;
322 ctx->cfg.css = "/cgit.css";
323 ctx->cfg.logo = "/cgit.png";
324 ctx->cfg.local_time = 0;
325 ctx->cfg.enable_gitweb_owner = 1;
326 ctx->cfg.enable_tree_linenumbers = 1;
327 ctx->cfg.max_repo_count = 50;
328 ctx->cfg.max_commit_count = 50;
329 ctx->cfg.max_lock_attempts = 5;
330 ctx->cfg.max_msg_len = 80;
331 ctx->cfg.max_repodesc_len = 80;
332 ctx->cfg.max_blob_size = 0;
333 ctx->cfg.max_stats = 0;
334 ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
335 ctx->cfg.project_list = NULL;
336 ctx->cfg.renamelimit = -1;
337 ctx->cfg.remove_suffix = 0;
338 ctx->cfg.robots = "index, nofollow";
339 ctx->cfg.root_title = "Git repository browser";
340 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
341 ctx->cfg.scan_hidden_path = 0;
342 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
343 ctx->cfg.section = "";
344 ctx->cfg.summary_branches = 10;
345 ctx->cfg.summary_log = 10;
346 ctx->cfg.summary_tags = 10;
347 ctx->cfg.max_atom_items = 10;
348 ctx->cfg.ssdiff = 0;
349 ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
350 ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
351 ctx->env.https = xstrdupn(getenv("HTTPS"));
352 ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
353 ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
354 ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
355 ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
356 ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
357 ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
358 ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
359 ctx->page.mimetype = "text/html";
360 ctx->page.charset = PAGE_ENCODING;
361 ctx->page.filename = NULL;
362 ctx->page.size = 0;
363 ctx->page.modified = time(NULL);
364 ctx->page.expires = ctx->page.modified;
365 ctx->page.etag = NULL;
366 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
367 if (ctx->env.script_name)
368 ctx->cfg.script_name = ctx->env.script_name;
369 if (ctx->env.query_string)
370 ctx->qry.raw = ctx->env.query_string;
371 if (!ctx->env.cgit_config)
372 ctx->env.cgit_config = CGIT_CONFIG;
373}
374
375struct refmatch {
376 char *req_ref;
377 char *first_ref;
378 int match;
379};
380
381int find_current_ref(const char *refname, const unsigned char *sha1,
382 int flags, void *cb_data)
383{
384 struct refmatch *info;
385
386 info = (struct refmatch *)cb_data;
387 if (!strcmp(refname, info->req_ref))
388 info->match = 1;
389 if (!info->first_ref)
390 info->first_ref = xstrdup(refname);
391 return info->match;
392}
393
394char *find_default_branch(struct cgit_repo *repo)
395{
396 struct refmatch info;
397 char *ref;
398
399 info.req_ref = repo->defbranch;
400 info.first_ref = NULL;
401 info.match = 0;
402 for_each_branch_ref(find_current_ref, &info);
403 if (info.match)
404 ref = info.req_ref;
405 else
406 ref = info.first_ref;
407 if (ref)
408 ref = xstrdup(ref);
409 return ref;
410}
411
412static int prepare_repo_cmd(struct cgit_context *ctx)
413{
414 char *tmp;
415 unsigned char sha1[20];
416 int nongit = 0;
417
418 setenv("GIT_DIR", ctx->repo->path, 1);
419 setup_git_directory_gently(&nongit);
420 if (nongit) {
421 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
422 "config error");
423 tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
424 ctx->repo = NULL;
425 cgit_print_http_headers(ctx);
426 cgit_print_docstart(ctx);
427 cgit_print_pageheader(ctx);
428 cgit_print_error(tmp);
429 cgit_print_docend();
430 return 1;
431 }
432 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
433
434 if (!ctx->qry.head) {
435 ctx->qry.nohead = 1;
436 ctx->qry.head = find_default_branch(ctx->repo);
437 ctx->repo->defbranch = ctx->qry.head;
438 }
439
440 if (!ctx->qry.head) {
441 cgit_print_http_headers(ctx);
442 cgit_print_docstart(ctx);
443 cgit_print_pageheader(ctx);
444 cgit_print_error("Repository seems to be empty");
445 cgit_print_docend();
446 return 1;
447 }
448
449 if (get_sha1(ctx->qry.head, sha1)) {
450 tmp = xstrdup(ctx->qry.head);
451 ctx->qry.head = ctx->repo->defbranch;
452 ctx->page.status = 404;
453 ctx->page.statusmsg = "not found";
454 cgit_print_http_headers(ctx);
455 cgit_print_docstart(ctx);
456 cgit_print_pageheader(ctx);
457 cgit_print_error(fmt("Invalid branch: %s", tmp));
458 cgit_print_docend();
459 return 1;
460 }
461 return 0;
462}
463
464static void process_request(void *cbdata)
465{
466 struct cgit_context *ctx = cbdata;
467 struct cgit_cmd *cmd;
468
469 cmd = cgit_get_cmd(ctx);
470 if (!cmd) {
471 ctx->page.title = "cgit error";
472 cgit_print_http_headers(ctx);
473 cgit_print_docstart(ctx);
474 cgit_print_pageheader(ctx);
475 cgit_print_error("Invalid request");
476 cgit_print_docend();
477 return;
478 }
479
480 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
481 * in-project path limit to be made available at ctx->qry.vpath.
482 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
483 */
484 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
485
486 if (cmd->want_repo && !ctx->repo) {
487 cgit_print_http_headers(ctx);
488 cgit_print_docstart(ctx);
489 cgit_print_pageheader(ctx);
490 cgit_print_error(fmt("No repository selected"));
491 cgit_print_docend();
492 return;
493 }
494
495 if (ctx->repo && prepare_repo_cmd(ctx))
496 return;
497
498 if (cmd->want_layout) {
499 cgit_print_http_headers(ctx);
500 cgit_print_docstart(ctx);
501 cgit_print_pageheader(ctx);
502 }
503
504 cmd->fn(ctx);
505
506 if (cmd->want_layout)
507 cgit_print_docend();
508}
509
510int cmp_repos(const void *a, const void *b)
511{
512 const struct cgit_repo *ra = a, *rb = b;
513 return strcmp(ra->url, rb->url);
514}
515
516char *build_snapshot_setting(int bitmap)
517{
518 const struct cgit_snapshot_format *f;
519 char *result = xstrdup("");
520 char *tmp;
521 int len;
522
523 for (f = cgit_snapshot_formats; f->suffix; f++) {
524 if (f->bit & bitmap) {
525 tmp = result;
526 result = xstrdup(fmt("%s%s ", tmp, f->suffix));
527 free(tmp);
528 }
529 }
530 len = strlen(result);
531 if (len)
532 result[len - 1] = '\0';
533 return result;
534}
535
536char *get_first_line(char *txt)
537{
538 char *t = xstrdup(txt);
539 char *p = strchr(t, '\n');
540 if (p)
541 *p = '\0';
542 return t;
543}
544
545void print_repo(FILE *f, struct cgit_repo *repo)
546{
547 fprintf(f, "repo.url=%s\n", repo->url);
548 fprintf(f, "repo.name=%s\n", repo->name);
549 fprintf(f, "repo.path=%s\n", repo->path);
550 if (repo->owner)
551 fprintf(f, "repo.owner=%s\n", repo->owner);
552 if (repo->desc) {
553 char *tmp = get_first_line(repo->desc);
554 fprintf(f, "repo.desc=%s\n", tmp);
555 free(tmp);
556 }
557 if (repo->readme)
558 fprintf(f, "repo.readme=%s\n", repo->readme);
559 if (repo->defbranch)
560 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
561 if (repo->module_link)
562 fprintf(f, "repo.module-link=%s\n", repo->module_link);
563 if (repo->section)
564 fprintf(f, "repo.section=%s\n", repo->section);
565 if (repo->clone_url)
566 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
567 fprintf(f, "repo.enable-commit-graph=%d\n",
568 repo->enable_commit_graph);
569 fprintf(f, "repo.enable-log-filecount=%d\n",
570 repo->enable_log_filecount);
571 fprintf(f, "repo.enable-log-linecount=%d\n",
572 repo->enable_log_linecount);
573 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
574 fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
575 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
576 fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
577 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
578 fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
579 if (repo->snapshots != ctx.cfg.snapshots) {
580 char *tmp = build_snapshot_setting(repo->snapshots);
581 fprintf(f, "repo.snapshots=%s\n", tmp);
582 free(tmp);
583 }
584 if (repo->max_stats != ctx.cfg.max_stats)
585 fprintf(f, "repo.max-stats=%s\n",
586 cgit_find_stats_periodname(repo->max_stats));
587 fprintf(f, "\n");
588}
589
590void print_repolist(FILE *f, struct cgit_repolist *list, int start)
591{
592 int i;
593
594 for(i = start; i < list->count; i++)
595 print_repo(f, &list->repos[i]);
596}
597
598/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
599 * and return 0 on success.
600 */
601static int generate_cached_repolist(const char *path, const char *cached_rc)
602{
603 char *locked_rc;
604 int idx;
605 FILE *f;
606
607 locked_rc = xstrdup(fmt("%s.lock", cached_rc));
608 f = fopen(locked_rc, "wx");
609 if (!f) {
610 /* Inform about the error unless the lockfile already existed,
611 * since that only means we've got concurrent requests.
612 */
613 if (errno != EEXIST)
614 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
615 locked_rc, strerror(errno), errno);
616 return errno;
617 }
618 idx = cgit_repolist.count;
619 if (ctx.cfg.project_list)
620 scan_projects(path, ctx.cfg.project_list, repo_config);
621 else
622 scan_tree(path, repo_config);
623 print_repolist(f, &cgit_repolist, idx);
624 if (rename(locked_rc, cached_rc))
625 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
626 locked_rc, cached_rc, strerror(errno), errno);
627 fclose(f);
628 return 0;
629}
630
631static void process_cached_repolist(const char *path)
632{
633 struct stat st;
634 char *cached_rc;
635 time_t age;
636 unsigned long hash;
637
638 hash = hash_str(path);
639 if (ctx.cfg.project_list)
640 hash += hash_str(ctx.cfg.project_list);
641 cached_rc = xstrdup(fmt("%s/rc-%8lx", ctx.cfg.cache_root, hash));
642
643 if (stat(cached_rc, &st)) {
644 /* Nothing is cached, we need to scan without forking. And
645 * if we fail to generate a cached repolist, we need to
646 * invoke scan_tree manually.
647 */
648 if (generate_cached_repolist(path, cached_rc)) {
649 if (ctx.cfg.project_list)
650 scan_projects(path, ctx.cfg.project_list,
651 repo_config);
652 else
653 scan_tree(path, repo_config);
654 }
655 return;
656 }
657
658 parse_configfile(cached_rc, config_cb);
659
660 /* If the cached configfile hasn't expired, lets exit now */
661 age = time(NULL) - st.st_mtime;
662 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
663 return;
664
665 /* The cached repolist has been parsed, but it was old. So lets
666 * rescan the specified path and generate a new cached repolist
667 * in a child-process to avoid latency for the current request.
668 */
669 if (fork())
670 return;
671
672 exit(generate_cached_repolist(path, cached_rc));
673}
674
675static void cgit_parse_args(int argc, const char **argv)
676{
677 int i;
678 int scan = 0;
679
680 for (i = 1; i < argc; i++) {
681 if (!strncmp(argv[i], "--cache=", 8)) {
682 ctx.cfg.cache_root = xstrdup(argv[i]+8);
683 }
684 if (!strcmp(argv[i], "--nocache")) {
685 ctx.cfg.nocache = 1;
686 }
687 if (!strcmp(argv[i], "--nohttp")) {
688 ctx.env.no_http = "1";
689 }
690 if (!strncmp(argv[i], "--query=", 8)) {
691 ctx.qry.raw = xstrdup(argv[i]+8);
692 }
693 if (!strncmp(argv[i], "--repo=", 7)) {
694 ctx.qry.repo = xstrdup(argv[i]+7);
695 }
696 if (!strncmp(argv[i], "--page=", 7)) {
697 ctx.qry.page = xstrdup(argv[i]+7);
698 }
699 if (!strncmp(argv[i], "--head=", 7)) {
700 ctx.qry.head = xstrdup(argv[i]+7);
701 ctx.qry.has_symref = 1;
702 }
703 if (!strncmp(argv[i], "--sha1=", 7)) {
704 ctx.qry.sha1 = xstrdup(argv[i]+7);
705 ctx.qry.has_sha1 = 1;
706 }
707 if (!strncmp(argv[i], "--ofs=", 6)) {
708 ctx.qry.ofs = atoi(argv[i]+6);
709 }
710 if (!strncmp(argv[i], "--scan-tree=", 12) ||
711 !strncmp(argv[i], "--scan-path=", 12)) {
712 /* HACK: the global snapshot bitmask defines the
713 * set of allowed snapshot formats, but the config
714 * file hasn't been parsed yet so the mask is
715 * currently 0. By setting all bits high before
716 * scanning we make sure that any in-repo cgitrc
717 * snapshot setting is respected by scan_tree().
718 * BTW: we assume that there'll never be more than
719 * 255 different snapshot formats supported by cgit...
720 */
721 ctx.cfg.snapshots = 0xFF;
722 scan++;
723 scan_tree(argv[i] + 12, repo_config);
724 }
725 }
726 if (scan) {
727 qsort(cgit_repolist.repos, cgit_repolist.count,
728 sizeof(struct cgit_repo), cmp_repos);
729 print_repolist(stdout, &cgit_repolist, 0);
730 exit(0);
731 }
732}
733
734static int calc_ttl()
735{
736 if (!ctx.repo)
737 return ctx.cfg.cache_root_ttl;
738
739 if (!ctx.qry.page)
740 return ctx.cfg.cache_repo_ttl;
741
742 if (ctx.qry.has_symref)
743 return ctx.cfg.cache_dynamic_ttl;
744
745 if (ctx.qry.has_sha1)
746 return ctx.cfg.cache_static_ttl;
747
748 return ctx.cfg.cache_repo_ttl;
749}
750
751int main(int argc, const char **argv)
752{
753 const char *path;
754 char *qry;
755 int err, ttl;
756
757 prepare_context(&ctx);
758 cgit_repolist.length = 0;
759 cgit_repolist.count = 0;
760 cgit_repolist.repos = NULL;
761
762 cgit_parse_args(argc, argv);
763 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
764 ctx.repo = NULL;
765 http_parse_querystring(ctx.qry.raw, querystring_cb);
766
767 /* If virtual-root isn't specified in cgitrc, lets pretend
768 * that virtual-root equals SCRIPT_NAME, minus any possibly
769 * trailing slashes.
770 */
771 if (!ctx.cfg.virtual_root)
772 ctx.cfg.virtual_root = trim_end(ctx.cfg.script_name, '/');
773
774 /* If no url parameter is specified on the querystring, lets
775 * use PATH_INFO as url. This allows cgit to work with virtual
776 * urls without the need for rewriterules in the webserver (as
777 * long as PATH_INFO is included in the cache lookup key).
778 */
779 path = ctx.env.path_info;
780 if (!ctx.qry.url && path) {
781 if (path[0] == '/')
782 path++;
783 ctx.qry.url = xstrdup(path);
784 if (ctx.qry.raw) {
785 qry = ctx.qry.raw;
786 ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
787 free(qry);
788 } else
789 ctx.qry.raw = xstrdup(ctx.qry.url);
790 cgit_parse_url(ctx.qry.url);
791 }
792
793 ttl = calc_ttl();
794 ctx.page.expires += ttl*60;
795 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
796 ctx.cfg.nocache = 1;
797 if (ctx.cfg.nocache)
798 ctx.cfg.cache_size = 0;
799 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
800 ctx.qry.raw, ttl, process_request, &ctx);
801 if (err)
802 cgit_print_error(fmt("Error processing page: %s (%d)",
803 strerror(err), err));
804 return err;
805}