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 args_size = 0;
33 int extra_args;
34
35 if (!cmd || !cmd[0])
36 return NULL;
37
38 switch (filtertype) {
39 case SOURCE:
40 extra_args = 1;
41 break;
42
43 case ABOUT:
44 case COMMIT:
45 default:
46 extra_args = 0;
47 break;
48 }
49
50 f = xmalloc(sizeof(struct cgit_filter));
51 f->cmd = xstrdup(cmd);
52 args_size = (2 + extra_args) * sizeof(char *);
53 f->argv = xmalloc(args_size);
54 memset(f->argv, 0, args_size);
55 f->argv[0] = f->cmd;
56 return f;
57}
58
59static void process_cached_repolist(const char *path);
60
61void repo_config(struct cgit_repo *repo, const char *name, const char *value)
62{
63 if (!strcmp(name, "name"))
64 repo->name = xstrdup(value);
65 else if (!strcmp(name, "clone-url"))
66 repo->clone_url = xstrdup(value);
67 else if (!strcmp(name, "desc"))
68 repo->desc = xstrdup(value);
69 else if (!strcmp(name, "owner"))
70 repo->owner = xstrdup(value);
71 else if (!strcmp(name, "defbranch"))
72 repo->defbranch = xstrdup(value);
73 else if (!strcmp(name, "snapshots"))
74 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
75 else if (!strcmp(name, "enable-commit-graph"))
76 repo->enable_commit_graph = ctx.cfg.enable_commit_graph * atoi(value);
77 else if (!strcmp(name, "enable-log-filecount"))
78 repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
79 else if (!strcmp(name, "enable-log-linecount"))
80 repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
81 else if (!strcmp(name, "enable-remote-branches"))
82 repo->enable_remote_branches = atoi(value);
83 else if (!strcmp(name, "enable-subject-links"))
84 repo->enable_subject_links = atoi(value);
85 else if (!strcmp(name, "max-stats"))
86 repo->max_stats = cgit_find_stats_period(value, NULL);
87 else if (!strcmp(name, "module-link"))
88 repo->module_link= xstrdup(value);
89 else if (!strcmp(name, "section"))
90 repo->section = xstrdup(value);
91 else if (!strcmp(name, "readme") && value != NULL)
92 repo->readme = xstrdup(value);
93 else if (!strcmp(name, "logo") && value != NULL)
94 repo->logo = xstrdup(value);
95 else if (!strcmp(name, "logo-link") && value != NULL)
96 repo->logo_link = xstrdup(value);
97 else if (ctx.cfg.enable_filter_overrides) {
98 if (!strcmp(name, "about-filter"))
99 repo->about_filter = new_filter(value, ABOUT);
100 else if (!strcmp(name, "commit-filter"))
101 repo->commit_filter = new_filter(value, COMMIT);
102 else if (!strcmp(name, "source-filter"))
103 repo->source_filter = new_filter(value, SOURCE);
104 }
105}
106
107void config_cb(const char *name, const char *value)
108{
109 if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
110 ctx.cfg.section = xstrdup(value);
111 else if (!strcmp(name, "repo.url"))
112 ctx.repo = cgit_add_repo(value);
113 else if (ctx.repo && !strcmp(name, "repo.path"))
114 ctx.repo->path = trim_end(value, '/');
115 else if (ctx.repo && !prefixcmp(name, "repo."))
116 repo_config(ctx.repo, name + 5, value);
117 else if (!strcmp(name, "readme"))
118 ctx.cfg.readme = xstrdup(value);
119 else if (!strcmp(name, "root-title"))
120 ctx.cfg.root_title = xstrdup(value);
121 else if (!strcmp(name, "root-desc"))
122 ctx.cfg.root_desc = xstrdup(value);
123 else if (!strcmp(name, "root-readme"))
124 ctx.cfg.root_readme = xstrdup(value);
125 else if (!strcmp(name, "css"))
126 ctx.cfg.css = xstrdup(value);
127 else if (!strcmp(name, "favicon"))
128 ctx.cfg.favicon = xstrdup(value);
129 else if (!strcmp(name, "footer"))
130 ctx.cfg.footer = xstrdup(value);
131 else if (!strcmp(name, "head-include"))
132 ctx.cfg.head_include = xstrdup(value);
133 else if (!strcmp(name, "header"))
134 ctx.cfg.header = xstrdup(value);
135 else if (!strcmp(name, "logo"))
136 ctx.cfg.logo = xstrdup(value);
137 else if (!strcmp(name, "index-header"))
138 ctx.cfg.index_header = xstrdup(value);
139 else if (!strcmp(name, "index-info"))
140 ctx.cfg.index_info = xstrdup(value);
141 else if (!strcmp(name, "logo-link"))
142 ctx.cfg.logo_link = xstrdup(value);
143 else if (!strcmp(name, "module-link"))
144 ctx.cfg.module_link = xstrdup(value);
145 else if (!strcmp(name, "strict-export"))
146 ctx.cfg.strict_export = xstrdup(value);
147 else if (!strcmp(name, "virtual-root")) {
148 ctx.cfg.virtual_root = trim_end(value, '/');
149 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
150 ctx.cfg.virtual_root = "";
151 } else if (!strcmp(name, "nocache"))
152 ctx.cfg.nocache = atoi(value);
153 else if (!strcmp(name, "noplainemail"))
154 ctx.cfg.noplainemail = atoi(value);
155 else if (!strcmp(name, "noheader"))
156 ctx.cfg.noheader = atoi(value);
157 else if (!strcmp(name, "snapshots"))
158 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
159 else if (!strcmp(name, "enable-filter-overrides"))
160 ctx.cfg.enable_filter_overrides = atoi(value);
161 else if (!strcmp(name, "enable-gitweb-owner"))
162 ctx.cfg.enable_gitweb_owner = atoi(value);
163 else if (!strcmp(name, "enable-http-clone"))
164 ctx.cfg.enable_http_clone = atoi(value);
165 else if (!strcmp(name, "enable-index-links"))
166 ctx.cfg.enable_index_links = atoi(value);
167 else if (!strcmp(name, "enable-commit-graph"))
168 ctx.cfg.enable_commit_graph = atoi(value);
169 else if (!strcmp(name, "enable-log-filecount"))
170 ctx.cfg.enable_log_filecount = atoi(value);
171 else if (!strcmp(name, "enable-log-linecount"))
172 ctx.cfg.enable_log_linecount = atoi(value);
173 else if (!strcmp(name, "enable-remote-branches"))
174 ctx.cfg.enable_remote_branches = atoi(value);
175 else if (!strcmp(name, "enable-subject-links"))
176 ctx.cfg.enable_subject_links = atoi(value);
177 else if (!strcmp(name, "enable-tree-linenumbers"))
178 ctx.cfg.enable_tree_linenumbers = atoi(value);
179 else if (!strcmp(name, "max-stats"))
180 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
181 else if (!strcmp(name, "cache-size"))
182 ctx.cfg.cache_size = atoi(value);
183 else if (!strcmp(name, "cache-root"))
184 ctx.cfg.cache_root = xstrdup(expand_macros(value));
185 else if (!strcmp(name, "cache-root-ttl"))
186 ctx.cfg.cache_root_ttl = atoi(value);
187 else if (!strcmp(name, "cache-repo-ttl"))
188 ctx.cfg.cache_repo_ttl = atoi(value);
189 else if (!strcmp(name, "cache-scanrc-ttl"))
190 ctx.cfg.cache_scanrc_ttl = atoi(value);
191 else if (!strcmp(name, "cache-static-ttl"))
192 ctx.cfg.cache_static_ttl = atoi(value);
193 else if (!strcmp(name, "cache-dynamic-ttl"))
194 ctx.cfg.cache_dynamic_ttl = atoi(value);
195 else if (!strcmp(name, "about-filter"))
196 ctx.cfg.about_filter = new_filter(value, ABOUT);
197 else if (!strcmp(name, "commit-filter"))
198 ctx.cfg.commit_filter = new_filter(value, COMMIT);
199 else if (!strcmp(name, "embedded"))
200 ctx.cfg.embedded = atoi(value);
201 else if (!strcmp(name, "max-atom-items"))
202 ctx.cfg.max_atom_items = atoi(value);
203 else if (!strcmp(name, "max-message-length"))
204 ctx.cfg.max_msg_len = atoi(value);
205 else if (!strcmp(name, "max-repodesc-length"))
206 ctx.cfg.max_repodesc_len = atoi(value);
207 else if (!strcmp(name, "max-blob-size"))
208 ctx.cfg.max_blob_size = atoi(value);
209 else if (!strcmp(name, "max-repo-count"))
210 ctx.cfg.max_repo_count = atoi(value);
211 else if (!strcmp(name, "max-commit-count"))
212 ctx.cfg.max_commit_count = atoi(value);
213 else if (!strcmp(name, "project-list"))
214 ctx.cfg.project_list = xstrdup(expand_macros(value));
215 else if (!strcmp(name, "scan-path"))
216 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
217 process_cached_repolist(expand_macros(value));
218 else if (ctx.cfg.project_list)
219 scan_projects(expand_macros(value),
220 ctx.cfg.project_list, repo_config);
221 else
222 scan_tree(expand_macros(value), repo_config);
223 else if (!strcmp(name, "scan-hidden-path"))
224 ctx.cfg.scan_hidden_path = atoi(value);
225 else if (!strcmp(name, "section-from-path"))
226 ctx.cfg.section_from_path = atoi(value);
227 else if (!strcmp(name, "source-filter"))
228 ctx.cfg.source_filter = new_filter(value, SOURCE);
229 else if (!strcmp(name, "summary-log"))
230 ctx.cfg.summary_log = atoi(value);
231 else if (!strcmp(name, "summary-branches"))
232 ctx.cfg.summary_branches = atoi(value);
233 else if (!strcmp(name, "summary-tags"))
234 ctx.cfg.summary_tags = atoi(value);
235 else if (!strcmp(name, "side-by-side-diffs"))
236 ctx.cfg.ssdiff = atoi(value);
237 else if (!strcmp(name, "agefile"))
238 ctx.cfg.agefile = xstrdup(value);
239 else if (!strcmp(name, "renamelimit"))
240 ctx.cfg.renamelimit = atoi(value);
241 else if (!strcmp(name, "remove-suffix"))
242 ctx.cfg.remove_suffix = atoi(value);
243 else if (!strcmp(name, "robots"))
244 ctx.cfg.robots = xstrdup(value);
245 else if (!strcmp(name, "clone-prefix"))
246 ctx.cfg.clone_prefix = xstrdup(value);
247 else if (!strcmp(name, "local-time"))
248 ctx.cfg.local_time = atoi(value);
249 else if (!prefixcmp(name, "mimetype."))
250 add_mimetype(name + 9, value);
251 else if (!strcmp(name, "include"))
252 parse_configfile(expand_macros(value), config_cb);
253}
254
255static void querystring_cb(const char *name, const char *value)
256{
257 if (!value)
258 value = "";
259
260 if (!strcmp(name,"r")) {
261 ctx.qry.repo = xstrdup(value);
262 ctx.repo = cgit_get_repoinfo(value);
263 } else if (!strcmp(name, "p")) {
264 ctx.qry.page = xstrdup(value);
265 } else if (!strcmp(name, "url")) {
266 if (*value == '/')
267 value++;
268 ctx.qry.url = xstrdup(value);
269 cgit_parse_url(value);
270 } else if (!strcmp(name, "qt")) {
271 ctx.qry.grep = xstrdup(value);
272 } else if (!strcmp(name, "q")) {
273 ctx.qry.search = xstrdup(value);
274 } else if (!strcmp(name, "h")) {
275 ctx.qry.head = xstrdup(value);
276 ctx.qry.has_symref = 1;
277 } else if (!strcmp(name, "id")) {
278 ctx.qry.sha1 = xstrdup(value);
279 ctx.qry.has_sha1 = 1;
280 } else if (!strcmp(name, "id2")) {
281 ctx.qry.sha2 = xstrdup(value);
282 ctx.qry.has_sha1 = 1;
283 } else if (!strcmp(name, "ofs")) {
284 ctx.qry.ofs = atoi(value);
285 } else if (!strcmp(name, "path")) {
286 ctx.qry.path = trim_end(value, '/');
287 } else if (!strcmp(name, "name")) {
288 ctx.qry.name = xstrdup(value);
289 } else if (!strcmp(name, "mimetype")) {
290 ctx.qry.mimetype = xstrdup(value);
291 } else if (!strcmp(name, "s")){
292 ctx.qry.sort = xstrdup(value);
293 } else if (!strcmp(name, "showmsg")) {
294 ctx.qry.showmsg = atoi(value);
295 } else if (!strcmp(name, "period")) {
296 ctx.qry.period = xstrdup(value);
297 } else if (!strcmp(name, "ss")) {
298 ctx.qry.ssdiff = atoi(value);
299 } else if (!strcmp(name, "all")) {
300 ctx.qry.show_all = atoi(value);
301 } else if (!strcmp(name, "context")) {
302 ctx.qry.context = atoi(value);
303 } else if (!strcmp(name, "ignorews")) {
304 ctx.qry.ignorews = atoi(value);
305 }
306}
307
308char *xstrdupn(const char *str)
309{
310 return (str ? xstrdup(str) : NULL);
311}
312
313static void prepare_context(struct cgit_context *ctx)
314{
315 memset(ctx, 0, sizeof(*ctx));
316 ctx->cfg.agefile = "info/web/last-modified";
317 ctx->cfg.nocache = 0;
318 ctx->cfg.cache_size = 0;
319 ctx->cfg.cache_dynamic_ttl = 5;
320 ctx->cfg.cache_max_create_time = 5;
321 ctx->cfg.cache_repo_ttl = 5;
322 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
323 ctx->cfg.cache_root_ttl = 5;
324 ctx->cfg.cache_scanrc_ttl = 15;
325 ctx->cfg.cache_static_ttl = -1;
326 ctx->cfg.css = "/cgit.css";
327 ctx->cfg.logo = "/cgit.png";
328 ctx->cfg.local_time = 0;
329 ctx->cfg.enable_gitweb_owner = 1;
330 ctx->cfg.enable_http_clone = 1;
331 ctx->cfg.enable_tree_linenumbers = 1;
332 ctx->cfg.max_repo_count = 50;
333 ctx->cfg.max_commit_count = 50;
334 ctx->cfg.max_lock_attempts = 5;
335 ctx->cfg.max_msg_len = 80;
336 ctx->cfg.max_repodesc_len = 80;
337 ctx->cfg.max_blob_size = 0;
338 ctx->cfg.max_stats = 0;
339 ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
340 ctx->cfg.project_list = NULL;
341 ctx->cfg.renamelimit = -1;
342 ctx->cfg.remove_suffix = 0;
343 ctx->cfg.robots = "index, nofollow";
344 ctx->cfg.root_title = "Git repository browser";
345 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
346 ctx->cfg.scan_hidden_path = 0;
347 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
348 ctx->cfg.section = "";
349 ctx->cfg.summary_branches = 10;
350 ctx->cfg.summary_log = 10;
351 ctx->cfg.summary_tags = 10;
352 ctx->cfg.max_atom_items = 10;
353 ctx->cfg.ssdiff = 0;
354 ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
355 ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
356 ctx->env.https = xstrdupn(getenv("HTTPS"));
357 ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
358 ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
359 ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
360 ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
361 ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
362 ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
363 ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
364 ctx->page.mimetype = "text/html";
365 ctx->page.charset = PAGE_ENCODING;
366 ctx->page.filename = NULL;
367 ctx->page.size = 0;
368 ctx->page.modified = time(NULL);
369 ctx->page.expires = ctx->page.modified;
370 ctx->page.etag = NULL;
371 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
372 if (ctx->env.script_name)
373 ctx->cfg.script_name = ctx->env.script_name;
374 if (ctx->env.query_string)
375 ctx->qry.raw = ctx->env.query_string;
376 if (!ctx->env.cgit_config)
377 ctx->env.cgit_config = CGIT_CONFIG;
378}
379
380struct refmatch {
381 char *req_ref;
382 char *first_ref;
383 int match;
384};
385
386int find_current_ref(const char *refname, const unsigned char *sha1,
387 int flags, void *cb_data)
388{
389 struct refmatch *info;
390
391 info = (struct refmatch *)cb_data;
392 if (!strcmp(refname, info->req_ref))
393 info->match = 1;
394 if (!info->first_ref)
395 info->first_ref = xstrdup(refname);
396 return info->match;
397}
398
399char *find_default_branch(struct cgit_repo *repo)
400{
401 struct refmatch info;
402 char *ref;
403
404 info.req_ref = repo->defbranch;
405 info.first_ref = NULL;
406 info.match = 0;
407 for_each_branch_ref(find_current_ref, &info);
408 if (info.match)
409 ref = info.req_ref;
410 else
411 ref = info.first_ref;
412 if (ref)
413 ref = xstrdup(ref);
414 return ref;
415}
416
417static int prepare_repo_cmd(struct cgit_context *ctx)
418{
419 char *tmp;
420 unsigned char sha1[20];
421 int nongit = 0;
422
423 setenv("GIT_DIR", ctx->repo->path, 1);
424 setup_git_directory_gently(&nongit);
425 if (nongit) {
426 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
427 "config error");
428 tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
429 ctx->repo = NULL;
430 cgit_print_http_headers(ctx);
431 cgit_print_docstart(ctx);
432 cgit_print_pageheader(ctx);
433 cgit_print_error(tmp);
434 cgit_print_docend();
435 return 1;
436 }
437 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
438
439 if (!ctx->qry.head) {
440 ctx->qry.nohead = 1;
441 ctx->qry.head = find_default_branch(ctx->repo);
442 ctx->repo->defbranch = ctx->qry.head;
443 }
444
445 if (!ctx->qry.head) {
446 cgit_print_http_headers(ctx);
447 cgit_print_docstart(ctx);
448 cgit_print_pageheader(ctx);
449 cgit_print_error("Repository seems to be empty");
450 cgit_print_docend();
451 return 1;
452 }
453
454 if (get_sha1(ctx->qry.head, sha1)) {
455 tmp = xstrdup(ctx->qry.head);
456 ctx->qry.head = ctx->repo->defbranch;
457 ctx->page.status = 404;
458 ctx->page.statusmsg = "Not found";
459 cgit_print_http_headers(ctx);
460 cgit_print_docstart(ctx);
461 cgit_print_pageheader(ctx);
462 cgit_print_error(fmt("Invalid branch: %s", tmp));
463 cgit_print_docend();
464 return 1;
465 }
466 cgit_prepare_repo_env(ctx->repo);
467 return 0;
468}
469
470static void process_request(void *cbdata)
471{
472 struct cgit_context *ctx = cbdata;
473 struct cgit_cmd *cmd;
474
475 cmd = cgit_get_cmd(ctx);
476 if (!cmd) {
477 ctx->page.title = "cgit error";
478 ctx->page.status = 404;
479 ctx->page.statusmsg = "Not found";
480 cgit_print_http_headers(ctx);
481 cgit_print_docstart(ctx);
482 cgit_print_pageheader(ctx);
483 cgit_print_error("Invalid request");
484 cgit_print_docend();
485 return;
486 }
487
488 if (!ctx->cfg.enable_http_clone && cmd->is_clone) {
489 html_status(404, "Not found", 0);
490 return;
491 }
492
493 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
494 * in-project path limit to be made available at ctx->qry.vpath.
495 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
496 */
497 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
498
499 if (cmd->want_repo && !ctx->repo) {
500 cgit_print_http_headers(ctx);
501 cgit_print_docstart(ctx);
502 cgit_print_pageheader(ctx);
503 cgit_print_error(fmt("No repository selected"));
504 cgit_print_docend();
505 return;
506 }
507
508 if (ctx->repo && prepare_repo_cmd(ctx))
509 return;
510
511 if (cmd->want_layout) {
512 cgit_print_http_headers(ctx);
513 cgit_print_docstart(ctx);
514 cgit_print_pageheader(ctx);
515 }
516
517 cmd->fn(ctx);
518
519 if (cmd->want_layout)
520 cgit_print_docend();
521}
522
523int cmp_repos(const void *a, const void *b)
524{
525 const struct cgit_repo *ra = a, *rb = b;
526 return strcmp(ra->url, rb->url);
527}
528
529char *build_snapshot_setting(int bitmap)
530{
531 const struct cgit_snapshot_format *f;
532 char *result = xstrdup("");
533 char *tmp;
534 int len;
535
536 for (f = cgit_snapshot_formats; f->suffix; f++) {
537 if (f->bit & bitmap) {
538 tmp = result;
539 result = xstrdup(fmt("%s%s ", tmp, f->suffix));
540 free(tmp);
541 }
542 }
543 len = strlen(result);
544 if (len)
545 result[len - 1] = '\0';
546 return result;
547}
548
549char *get_first_line(char *txt)
550{
551 char *t = xstrdup(txt);
552 char *p = strchr(t, '\n');
553 if (p)
554 *p = '\0';
555 return t;
556}
557
558void print_repo(FILE *f, struct cgit_repo *repo)
559{
560 fprintf(f, "repo.url=%s\n", repo->url);
561 fprintf(f, "repo.name=%s\n", repo->name);
562 fprintf(f, "repo.path=%s\n", repo->path);
563 if (repo->owner)
564 fprintf(f, "repo.owner=%s\n", repo->owner);
565 if (repo->desc) {
566 char *tmp = get_first_line(repo->desc);
567 fprintf(f, "repo.desc=%s\n", tmp);
568 free(tmp);
569 }
570 if (repo->readme)
571 fprintf(f, "repo.readme=%s\n", repo->readme);
572 if (repo->defbranch)
573 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
574 if (repo->module_link)
575 fprintf(f, "repo.module-link=%s\n", repo->module_link);
576 if (repo->section)
577 fprintf(f, "repo.section=%s\n", repo->section);
578 if (repo->clone_url)
579 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
580 fprintf(f, "repo.enable-commit-graph=%d\n",
581 repo->enable_commit_graph);
582 fprintf(f, "repo.enable-log-filecount=%d\n",
583 repo->enable_log_filecount);
584 fprintf(f, "repo.enable-log-linecount=%d\n",
585 repo->enable_log_linecount);
586 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
587 fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
588 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
589 fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
590 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
591 fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
592 if (repo->snapshots != ctx.cfg.snapshots) {
593 char *tmp = build_snapshot_setting(repo->snapshots);
594 fprintf(f, "repo.snapshots=%s\n", tmp);
595 free(tmp);
596 }
597 if (repo->max_stats != ctx.cfg.max_stats)
598 fprintf(f, "repo.max-stats=%s\n",
599 cgit_find_stats_periodname(repo->max_stats));
600 fprintf(f, "\n");
601}
602
603void print_repolist(FILE *f, struct cgit_repolist *list, int start)
604{
605 int i;
606
607 for(i = start; i < list->count; i++)
608 print_repo(f, &list->repos[i]);
609}
610
611/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
612 * and return 0 on success.
613 */
614static int generate_cached_repolist(const char *path, const char *cached_rc)
615{
616 char *locked_rc;
617 int idx;
618 FILE *f;
619
620 locked_rc = xstrdup(fmt("%s.lock", cached_rc));
621 f = fopen(locked_rc, "wx");
622 if (!f) {
623 /* Inform about the error unless the lockfile already existed,
624 * since that only means we've got concurrent requests.
625 */
626 if (errno != EEXIST)
627 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
628 locked_rc, strerror(errno), errno);
629 return errno;
630 }
631 idx = cgit_repolist.count;
632 if (ctx.cfg.project_list)
633 scan_projects(path, ctx.cfg.project_list, repo_config);
634 else
635 scan_tree(path, repo_config);
636 print_repolist(f, &cgit_repolist, idx);
637 if (rename(locked_rc, cached_rc))
638 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
639 locked_rc, cached_rc, strerror(errno), errno);
640 fclose(f);
641 return 0;
642}
643
644static void process_cached_repolist(const char *path)
645{
646 struct stat st;
647 char *cached_rc;
648 time_t age;
649 unsigned long hash;
650
651 hash = hash_str(path);
652 if (ctx.cfg.project_list)
653 hash += hash_str(ctx.cfg.project_list);
654 cached_rc = xstrdup(fmt("%s/rc-%8lx", ctx.cfg.cache_root, hash));
655
656 if (stat(cached_rc, &st)) {
657 /* Nothing is cached, we need to scan without forking. And
658 * if we fail to generate a cached repolist, we need to
659 * invoke scan_tree manually.
660 */
661 if (generate_cached_repolist(path, cached_rc)) {
662 if (ctx.cfg.project_list)
663 scan_projects(path, ctx.cfg.project_list,
664 repo_config);
665 else
666 scan_tree(path, repo_config);
667 }
668 return;
669 }
670
671 parse_configfile(cached_rc, config_cb);
672
673 /* If the cached configfile hasn't expired, lets exit now */
674 age = time(NULL) - st.st_mtime;
675 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
676 return;
677
678 /* The cached repolist has been parsed, but it was old. So lets
679 * rescan the specified path and generate a new cached repolist
680 * in a child-process to avoid latency for the current request.
681 */
682 if (fork())
683 return;
684
685 exit(generate_cached_repolist(path, cached_rc));
686}
687
688static void cgit_parse_args(int argc, const char **argv)
689{
690 int i;
691 int scan = 0;
692
693 for (i = 1; i < argc; i++) {
694 if (!strncmp(argv[i], "--cache=", 8)) {
695 ctx.cfg.cache_root = xstrdup(argv[i]+8);
696 }
697 if (!strcmp(argv[i], "--nocache")) {
698 ctx.cfg.nocache = 1;
699 }
700 if (!strcmp(argv[i], "--nohttp")) {
701 ctx.env.no_http = "1";
702 }
703 if (!strncmp(argv[i], "--query=", 8)) {
704 ctx.qry.raw = xstrdup(argv[i]+8);
705 }
706 if (!strncmp(argv[i], "--repo=", 7)) {
707 ctx.qry.repo = xstrdup(argv[i]+7);
708 }
709 if (!strncmp(argv[i], "--page=", 7)) {
710 ctx.qry.page = xstrdup(argv[i]+7);
711 }
712 if (!strncmp(argv[i], "--head=", 7)) {
713 ctx.qry.head = xstrdup(argv[i]+7);
714 ctx.qry.has_symref = 1;
715 }
716 if (!strncmp(argv[i], "--sha1=", 7)) {
717 ctx.qry.sha1 = xstrdup(argv[i]+7);
718 ctx.qry.has_sha1 = 1;
719 }
720 if (!strncmp(argv[i], "--ofs=", 6)) {
721 ctx.qry.ofs = atoi(argv[i]+6);
722 }
723 if (!strncmp(argv[i], "--scan-tree=", 12) ||
724 !strncmp(argv[i], "--scan-path=", 12)) {
725 /* HACK: the global snapshot bitmask defines the
726 * set of allowed snapshot formats, but the config
727 * file hasn't been parsed yet so the mask is
728 * currently 0. By setting all bits high before
729 * scanning we make sure that any in-repo cgitrc
730 * snapshot setting is respected by scan_tree().
731 * BTW: we assume that there'll never be more than
732 * 255 different snapshot formats supported by cgit...
733 */
734 ctx.cfg.snapshots = 0xFF;
735 scan++;
736 scan_tree(argv[i] + 12, repo_config);
737 }
738 }
739 if (scan) {
740 qsort(cgit_repolist.repos, cgit_repolist.count,
741 sizeof(struct cgit_repo), cmp_repos);
742 print_repolist(stdout, &cgit_repolist, 0);
743 exit(0);
744 }
745}
746
747static int calc_ttl()
748{
749 if (!ctx.repo)
750 return ctx.cfg.cache_root_ttl;
751
752 if (!ctx.qry.page)
753 return ctx.cfg.cache_repo_ttl;
754
755 if (ctx.qry.has_symref)
756 return ctx.cfg.cache_dynamic_ttl;
757
758 if (ctx.qry.has_sha1)
759 return ctx.cfg.cache_static_ttl;
760
761 return ctx.cfg.cache_repo_ttl;
762}
763
764int main(int argc, const char **argv)
765{
766 const char *path;
767 char *qry;
768 int err, ttl;
769
770 prepare_context(&ctx);
771 cgit_repolist.length = 0;
772 cgit_repolist.count = 0;
773 cgit_repolist.repos = NULL;
774
775 cgit_parse_args(argc, argv);
776 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
777 ctx.repo = NULL;
778 http_parse_querystring(ctx.qry.raw, querystring_cb);
779
780 /* If virtual-root isn't specified in cgitrc, lets pretend
781 * that virtual-root equals SCRIPT_NAME, minus any possibly
782 * trailing slashes.
783 */
784 if (!ctx.cfg.virtual_root && ctx.cfg.script_name) {
785 ctx.cfg.virtual_root = trim_end(ctx.cfg.script_name, '/');
786 if (!ctx.cfg.virtual_root)
787 ctx.cfg.virtual_root = "";
788 }
789
790 /* If no url parameter is specified on the querystring, lets
791 * use PATH_INFO as url. This allows cgit to work with virtual
792 * urls without the need for rewriterules in the webserver (as
793 * long as PATH_INFO is included in the cache lookup key).
794 */
795 path = ctx.env.path_info;
796 if (!ctx.qry.url && path) {
797 if (path[0] == '/')
798 path++;
799 ctx.qry.url = xstrdup(path);
800 if (ctx.qry.raw) {
801 qry = ctx.qry.raw;
802 ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
803 free(qry);
804 } else
805 ctx.qry.raw = xstrdup(ctx.qry.url);
806 cgit_parse_url(ctx.qry.url);
807 }
808
809 ttl = calc_ttl();
810 ctx.page.expires += ttl*60;
811 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
812 ctx.cfg.nocache = 1;
813 if (ctx.cfg.nocache)
814 ctx.cfg.cache_size = 0;
815 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
816 ctx.qry.raw, ttl, process_request, &ctx);
817 if (err)
818 cgit_print_error(fmt("Error processing page: %s (%d)",
819 strerror(err), err));
820 return err;
821}