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 struct string_list_item *item;
64
65 if (!strcmp(name, "name"))
66 repo->name = xstrdup(value);
67 else if (!strcmp(name, "clone-url"))
68 repo->clone_url = xstrdup(value);
69 else if (!strcmp(name, "desc"))
70 repo->desc = xstrdup(value);
71 else if (!strcmp(name, "owner"))
72 repo->owner = xstrdup(value);
73 else if (!strcmp(name, "defbranch"))
74 repo->defbranch = xstrdup(value);
75 else if (!strcmp(name, "snapshots"))
76 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
77 else if (!strcmp(name, "enable-commit-graph"))
78 repo->enable_commit_graph = ctx.cfg.enable_commit_graph * atoi(value);
79 else if (!strcmp(name, "enable-log-filecount"))
80 repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
81 else if (!strcmp(name, "enable-log-linecount"))
82 repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
83 else if (!strcmp(name, "enable-remote-branches"))
84 repo->enable_remote_branches = atoi(value);
85 else if (!strcmp(name, "enable-subject-links"))
86 repo->enable_subject_links = atoi(value);
87 else if (!strcmp(name, "max-stats"))
88 repo->max_stats = cgit_find_stats_period(value, NULL);
89 else if (!strcmp(name, "module-link"))
90 repo->module_link= xstrdup(value);
91 else if (!prefixcmp(name, "module-link.")) {
92 item = string_list_append(&repo->submodules, name + 12);
93 item->util = xstrdup(value);
94 } else if (!strcmp(name, "section"))
95 repo->section = xstrdup(value);
96 else if (!strcmp(name, "readme") && value != NULL)
97 repo->readme = xstrdup(value);
98 else if (!strcmp(name, "logo") && value != NULL)
99 repo->logo = xstrdup(value);
100 else if (!strcmp(name, "logo-link") && value != NULL)
101 repo->logo_link = xstrdup(value);
102 else if (ctx.cfg.enable_filter_overrides) {
103 if (!strcmp(name, "about-filter"))
104 repo->about_filter = new_filter(value, ABOUT);
105 else if (!strcmp(name, "commit-filter"))
106 repo->commit_filter = new_filter(value, COMMIT);
107 else if (!strcmp(name, "source-filter"))
108 repo->source_filter = new_filter(value, SOURCE);
109 }
110}
111
112void config_cb(const char *name, const char *value)
113{
114 if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
115 ctx.cfg.section = xstrdup(value);
116 else if (!strcmp(name, "repo.url"))
117 ctx.repo = cgit_add_repo(value);
118 else if (ctx.repo && !strcmp(name, "repo.path"))
119 ctx.repo->path = trim_end(value, '/');
120 else if (ctx.repo && !prefixcmp(name, "repo."))
121 repo_config(ctx.repo, name + 5, value);
122 else if (!strcmp(name, "readme"))
123 ctx.cfg.readme = xstrdup(value);
124 else if (!strcmp(name, "root-title"))
125 ctx.cfg.root_title = xstrdup(value);
126 else if (!strcmp(name, "root-desc"))
127 ctx.cfg.root_desc = xstrdup(value);
128 else if (!strcmp(name, "root-readme"))
129 ctx.cfg.root_readme = xstrdup(value);
130 else if (!strcmp(name, "css"))
131 ctx.cfg.css = xstrdup(value);
132 else if (!strcmp(name, "favicon"))
133 ctx.cfg.favicon = xstrdup(value);
134 else if (!strcmp(name, "footer"))
135 ctx.cfg.footer = xstrdup(value);
136 else if (!strcmp(name, "head-include"))
137 ctx.cfg.head_include = xstrdup(value);
138 else if (!strcmp(name, "header"))
139 ctx.cfg.header = xstrdup(value);
140 else if (!strcmp(name, "logo"))
141 ctx.cfg.logo = xstrdup(value);
142 else if (!strcmp(name, "index-header"))
143 ctx.cfg.index_header = xstrdup(value);
144 else if (!strcmp(name, "index-info"))
145 ctx.cfg.index_info = xstrdup(value);
146 else if (!strcmp(name, "logo-link"))
147 ctx.cfg.logo_link = xstrdup(value);
148 else if (!strcmp(name, "module-link"))
149 ctx.cfg.module_link = xstrdup(value);
150 else if (!strcmp(name, "strict-export"))
151 ctx.cfg.strict_export = xstrdup(value);
152 else if (!strcmp(name, "virtual-root")) {
153 ctx.cfg.virtual_root = trim_end(value, '/');
154 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
155 ctx.cfg.virtual_root = "";
156 } else if (!strcmp(name, "nocache"))
157 ctx.cfg.nocache = atoi(value);
158 else if (!strcmp(name, "noplainemail"))
159 ctx.cfg.noplainemail = atoi(value);
160 else if (!strcmp(name, "noheader"))
161 ctx.cfg.noheader = atoi(value);
162 else if (!strcmp(name, "snapshots"))
163 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
164 else if (!strcmp(name, "enable-filter-overrides"))
165 ctx.cfg.enable_filter_overrides = atoi(value);
166 else if (!strcmp(name, "enable-gitweb-owner"))
167 ctx.cfg.enable_gitweb_owner = atoi(value);
168 else if (!strcmp(name, "enable-http-clone"))
169 ctx.cfg.enable_http_clone = atoi(value);
170 else if (!strcmp(name, "enable-index-links"))
171 ctx.cfg.enable_index_links = atoi(value);
172 else if (!strcmp(name, "enable-commit-graph"))
173 ctx.cfg.enable_commit_graph = atoi(value);
174 else if (!strcmp(name, "enable-log-filecount"))
175 ctx.cfg.enable_log_filecount = atoi(value);
176 else if (!strcmp(name, "enable-log-linecount"))
177 ctx.cfg.enable_log_linecount = atoi(value);
178 else if (!strcmp(name, "enable-remote-branches"))
179 ctx.cfg.enable_remote_branches = atoi(value);
180 else if (!strcmp(name, "enable-subject-links"))
181 ctx.cfg.enable_subject_links = atoi(value);
182 else if (!strcmp(name, "enable-tree-linenumbers"))
183 ctx.cfg.enable_tree_linenumbers = atoi(value);
184 else if (!strcmp(name, "max-stats"))
185 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
186 else if (!strcmp(name, "cache-size"))
187 ctx.cfg.cache_size = atoi(value);
188 else if (!strcmp(name, "cache-root"))
189 ctx.cfg.cache_root = xstrdup(expand_macros(value));
190 else if (!strcmp(name, "cache-root-ttl"))
191 ctx.cfg.cache_root_ttl = atoi(value);
192 else if (!strcmp(name, "cache-repo-ttl"))
193 ctx.cfg.cache_repo_ttl = atoi(value);
194 else if (!strcmp(name, "cache-scanrc-ttl"))
195 ctx.cfg.cache_scanrc_ttl = atoi(value);
196 else if (!strcmp(name, "cache-static-ttl"))
197 ctx.cfg.cache_static_ttl = atoi(value);
198 else if (!strcmp(name, "cache-dynamic-ttl"))
199 ctx.cfg.cache_dynamic_ttl = atoi(value);
200 else if (!strcmp(name, "about-filter"))
201 ctx.cfg.about_filter = new_filter(value, ABOUT);
202 else if (!strcmp(name, "commit-filter"))
203 ctx.cfg.commit_filter = new_filter(value, COMMIT);
204 else if (!strcmp(name, "embedded"))
205 ctx.cfg.embedded = atoi(value);
206 else if (!strcmp(name, "max-atom-items"))
207 ctx.cfg.max_atom_items = atoi(value);
208 else if (!strcmp(name, "max-message-length"))
209 ctx.cfg.max_msg_len = atoi(value);
210 else if (!strcmp(name, "max-repodesc-length"))
211 ctx.cfg.max_repodesc_len = atoi(value);
212 else if (!strcmp(name, "max-blob-size"))
213 ctx.cfg.max_blob_size = atoi(value);
214 else if (!strcmp(name, "max-repo-count"))
215 ctx.cfg.max_repo_count = atoi(value);
216 else if (!strcmp(name, "max-commit-count"))
217 ctx.cfg.max_commit_count = atoi(value);
218 else if (!strcmp(name, "project-list"))
219 ctx.cfg.project_list = xstrdup(expand_macros(value));
220 else if (!strcmp(name, "scan-path"))
221 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
222 process_cached_repolist(expand_macros(value));
223 else if (ctx.cfg.project_list)
224 scan_projects(expand_macros(value),
225 ctx.cfg.project_list, repo_config);
226 else
227 scan_tree(expand_macros(value), repo_config);
228 else if (!strcmp(name, "scan-hidden-path"))
229 ctx.cfg.scan_hidden_path = atoi(value);
230 else if (!strcmp(name, "section-from-path"))
231 ctx.cfg.section_from_path = atoi(value);
232 else if (!strcmp(name, "source-filter"))
233 ctx.cfg.source_filter = new_filter(value, SOURCE);
234 else if (!strcmp(name, "summary-log"))
235 ctx.cfg.summary_log = atoi(value);
236 else if (!strcmp(name, "summary-branches"))
237 ctx.cfg.summary_branches = atoi(value);
238 else if (!strcmp(name, "summary-tags"))
239 ctx.cfg.summary_tags = atoi(value);
240 else if (!strcmp(name, "side-by-side-diffs"))
241 ctx.cfg.ssdiff = atoi(value);
242 else if (!strcmp(name, "agefile"))
243 ctx.cfg.agefile = xstrdup(value);
244 else if (!strcmp(name, "mimetype-file"))
245 ctx.cfg.mimetype_file = xstrdup(value);
246 else if (!strcmp(name, "renamelimit"))
247 ctx.cfg.renamelimit = atoi(value);
248 else if (!strcmp(name, "remove-suffix"))
249 ctx.cfg.remove_suffix = atoi(value);
250 else if (!strcmp(name, "robots"))
251 ctx.cfg.robots = xstrdup(value);
252 else if (!strcmp(name, "clone-prefix"))
253 ctx.cfg.clone_prefix = xstrdup(value);
254 else if (!strcmp(name, "clone-url"))
255 ctx.cfg.clone_url = xstrdup(value);
256 else if (!strcmp(name, "local-time"))
257 ctx.cfg.local_time = atoi(value);
258 else if (!prefixcmp(name, "mimetype."))
259 add_mimetype(name + 9, value);
260 else if (!strcmp(name, "include"))
261 parse_configfile(expand_macros(value), config_cb);
262}
263
264static void querystring_cb(const char *name, const char *value)
265{
266 if (!value)
267 value = "";
268
269 if (!strcmp(name,"r")) {
270 ctx.qry.repo = xstrdup(value);
271 ctx.repo = cgit_get_repoinfo(value);
272 } else if (!strcmp(name, "p")) {
273 ctx.qry.page = xstrdup(value);
274 } else if (!strcmp(name, "url")) {
275 if (*value == '/')
276 value++;
277 ctx.qry.url = xstrdup(value);
278 cgit_parse_url(value);
279 } else if (!strcmp(name, "qt")) {
280 ctx.qry.grep = xstrdup(value);
281 } else if (!strcmp(name, "q")) {
282 ctx.qry.search = xstrdup(value);
283 } else if (!strcmp(name, "h")) {
284 ctx.qry.head = xstrdup(value);
285 ctx.qry.has_symref = 1;
286 } else if (!strcmp(name, "id")) {
287 ctx.qry.sha1 = xstrdup(value);
288 ctx.qry.has_sha1 = 1;
289 } else if (!strcmp(name, "id2")) {
290 ctx.qry.sha2 = xstrdup(value);
291 ctx.qry.has_sha1 = 1;
292 } else if (!strcmp(name, "ofs")) {
293 ctx.qry.ofs = atoi(value);
294 } else if (!strcmp(name, "path")) {
295 ctx.qry.path = trim_end(value, '/');
296 } else if (!strcmp(name, "name")) {
297 ctx.qry.name = xstrdup(value);
298 } else if (!strcmp(name, "mimetype")) {
299 ctx.qry.mimetype = xstrdup(value);
300 } else if (!strcmp(name, "s")){
301 ctx.qry.sort = xstrdup(value);
302 } else if (!strcmp(name, "showmsg")) {
303 ctx.qry.showmsg = atoi(value);
304 } else if (!strcmp(name, "period")) {
305 ctx.qry.period = xstrdup(value);
306 } else if (!strcmp(name, "ss")) {
307 ctx.qry.ssdiff = atoi(value);
308 ctx.qry.has_ssdiff = 1;
309 } else if (!strcmp(name, "all")) {
310 ctx.qry.show_all = atoi(value);
311 } else if (!strcmp(name, "context")) {
312 ctx.qry.context = atoi(value);
313 } else if (!strcmp(name, "ignorews")) {
314 ctx.qry.ignorews = atoi(value);
315 }
316}
317
318char *xstrdupn(const char *str)
319{
320 return (str ? xstrdup(str) : NULL);
321}
322
323static void prepare_context(struct cgit_context *ctx)
324{
325 memset(ctx, 0, sizeof(*ctx));
326 ctx->cfg.agefile = "info/web/last-modified";
327 ctx->cfg.nocache = 0;
328 ctx->cfg.cache_size = 0;
329 ctx->cfg.cache_dynamic_ttl = 5;
330 ctx->cfg.cache_max_create_time = 5;
331 ctx->cfg.cache_repo_ttl = 5;
332 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
333 ctx->cfg.cache_root_ttl = 5;
334 ctx->cfg.cache_scanrc_ttl = 15;
335 ctx->cfg.cache_static_ttl = -1;
336 ctx->cfg.css = "/cgit.css";
337 ctx->cfg.logo = "/cgit.png";
338 ctx->cfg.local_time = 0;
339 ctx->cfg.enable_gitweb_owner = 1;
340 ctx->cfg.enable_http_clone = 1;
341 ctx->cfg.enable_tree_linenumbers = 1;
342 ctx->cfg.max_repo_count = 50;
343 ctx->cfg.max_commit_count = 50;
344 ctx->cfg.max_lock_attempts = 5;
345 ctx->cfg.max_msg_len = 80;
346 ctx->cfg.max_repodesc_len = 80;
347 ctx->cfg.max_blob_size = 0;
348 ctx->cfg.max_stats = 0;
349 ctx->cfg.project_list = NULL;
350 ctx->cfg.renamelimit = -1;
351 ctx->cfg.remove_suffix = 0;
352 ctx->cfg.robots = "index, nofollow";
353 ctx->cfg.root_title = "Git repository browser";
354 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
355 ctx->cfg.scan_hidden_path = 0;
356 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
357 ctx->cfg.section = "";
358 ctx->cfg.summary_branches = 10;
359 ctx->cfg.summary_log = 10;
360 ctx->cfg.summary_tags = 10;
361 ctx->cfg.max_atom_items = 10;
362 ctx->cfg.ssdiff = 0;
363 ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
364 ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
365 ctx->env.https = xstrdupn(getenv("HTTPS"));
366 ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
367 ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
368 ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
369 ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
370 ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
371 ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
372 ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
373 ctx->page.mimetype = "text/html";
374 ctx->page.charset = PAGE_ENCODING;
375 ctx->page.filename = NULL;
376 ctx->page.size = 0;
377 ctx->page.modified = time(NULL);
378 ctx->page.expires = ctx->page.modified;
379 ctx->page.etag = NULL;
380 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
381 if (ctx->env.script_name)
382 ctx->cfg.script_name = ctx->env.script_name;
383 if (ctx->env.query_string)
384 ctx->qry.raw = ctx->env.query_string;
385 if (!ctx->env.cgit_config)
386 ctx->env.cgit_config = CGIT_CONFIG;
387}
388
389struct refmatch {
390 char *req_ref;
391 char *first_ref;
392 int match;
393};
394
395int find_current_ref(const char *refname, const unsigned char *sha1,
396 int flags, void *cb_data)
397{
398 struct refmatch *info;
399
400 info = (struct refmatch *)cb_data;
401 if (!strcmp(refname, info->req_ref))
402 info->match = 1;
403 if (!info->first_ref)
404 info->first_ref = xstrdup(refname);
405 return info->match;
406}
407
408char *find_default_branch(struct cgit_repo *repo)
409{
410 struct refmatch info;
411 char *ref;
412
413 info.req_ref = repo->defbranch;
414 info.first_ref = NULL;
415 info.match = 0;
416 for_each_branch_ref(find_current_ref, &info);
417 if (info.match)
418 ref = info.req_ref;
419 else
420 ref = info.first_ref;
421 if (ref)
422 ref = xstrdup(ref);
423 return ref;
424}
425
426static char *guess_defbranch(const char *repo_path)
427{
428 const char *ref;
429 unsigned char sha1[20];
430
431 ref = resolve_ref("HEAD", sha1, 0, NULL);
432 if (!ref || prefixcmp(ref, "refs/heads/"))
433 return "master";
434 return xstrdup(ref + 11);
435}
436
437static int prepare_repo_cmd(struct cgit_context *ctx)
438{
439 char *tmp;
440 unsigned char sha1[20];
441 int nongit = 0;
442 int rc;
443
444 setenv("GIT_DIR", ctx->repo->path, 1);
445 setup_git_directory_gently(&nongit);
446 if (nongit) {
447 rc = errno;
448 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
449 "config error");
450 tmp = fmt("Failed to open %s: %s",
451 ctx->repo->name,
452 rc ? strerror(rc) : "Not a valid git repository");
453 ctx->repo = NULL;
454 cgit_print_http_headers(ctx);
455 cgit_print_docstart(ctx);
456 cgit_print_pageheader(ctx);
457 cgit_print_error(tmp);
458 cgit_print_docend();
459 return 1;
460 }
461 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
462
463 if (!ctx->repo->defbranch)
464 ctx->repo->defbranch = guess_defbranch(ctx->repo->path);
465
466 if (!ctx->qry.head) {
467 ctx->qry.nohead = 1;
468 ctx->qry.head = find_default_branch(ctx->repo);
469 }
470
471 if (!ctx->qry.head) {
472 cgit_print_http_headers(ctx);
473 cgit_print_docstart(ctx);
474 cgit_print_pageheader(ctx);
475 cgit_print_error("Repository seems to be empty");
476 cgit_print_docend();
477 return 1;
478 }
479
480 if (get_sha1(ctx->qry.head, sha1)) {
481 tmp = xstrdup(ctx->qry.head);
482 ctx->qry.head = ctx->repo->defbranch;
483 ctx->page.status = 404;
484 ctx->page.statusmsg = "Not found";
485 cgit_print_http_headers(ctx);
486 cgit_print_docstart(ctx);
487 cgit_print_pageheader(ctx);
488 cgit_print_error(fmt("Invalid branch: %s", tmp));
489 cgit_print_docend();
490 return 1;
491 }
492 sort_string_list(&ctx->repo->submodules);
493 cgit_prepare_repo_env(ctx->repo);
494 return 0;
495}
496
497static void process_request(void *cbdata)
498{
499 struct cgit_context *ctx = cbdata;
500 struct cgit_cmd *cmd;
501
502 cmd = cgit_get_cmd(ctx);
503 if (!cmd) {
504 ctx->page.title = "cgit error";
505 ctx->page.status = 404;
506 ctx->page.statusmsg = "Not found";
507 cgit_print_http_headers(ctx);
508 cgit_print_docstart(ctx);
509 cgit_print_pageheader(ctx);
510 cgit_print_error("Invalid request");
511 cgit_print_docend();
512 return;
513 }
514
515 if (!ctx->cfg.enable_http_clone && cmd->is_clone) {
516 html_status(404, "Not found", 0);
517 return;
518 }
519
520 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
521 * in-project path limit to be made available at ctx->qry.vpath.
522 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
523 */
524 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
525
526 if (cmd->want_repo && !ctx->repo) {
527 cgit_print_http_headers(ctx);
528 cgit_print_docstart(ctx);
529 cgit_print_pageheader(ctx);
530 cgit_print_error(fmt("No repository selected"));
531 cgit_print_docend();
532 return;
533 }
534
535 if (ctx->repo && prepare_repo_cmd(ctx))
536 return;
537
538 if (cmd->want_layout) {
539 cgit_print_http_headers(ctx);
540 cgit_print_docstart(ctx);
541 cgit_print_pageheader(ctx);
542 }
543
544 cmd->fn(ctx);
545
546 if (cmd->want_layout)
547 cgit_print_docend();
548}
549
550int cmp_repos(const void *a, const void *b)
551{
552 const struct cgit_repo *ra = a, *rb = b;
553 return strcmp(ra->url, rb->url);
554}
555
556char *build_snapshot_setting(int bitmap)
557{
558 const struct cgit_snapshot_format *f;
559 char *result = xstrdup("");
560 char *tmp;
561 int len;
562
563 for (f = cgit_snapshot_formats; f->suffix; f++) {
564 if (f->bit & bitmap) {
565 tmp = result;
566 result = xstrdup(fmt("%s%s ", tmp, f->suffix));
567 free(tmp);
568 }
569 }
570 len = strlen(result);
571 if (len)
572 result[len - 1] = '\0';
573 return result;
574}
575
576char *get_first_line(char *txt)
577{
578 char *t = xstrdup(txt);
579 char *p = strchr(t, '\n');
580 if (p)
581 *p = '\0';
582 return t;
583}
584
585void print_repo(FILE *f, struct cgit_repo *repo)
586{
587 fprintf(f, "repo.url=%s\n", repo->url);
588 fprintf(f, "repo.name=%s\n", repo->name);
589 fprintf(f, "repo.path=%s\n", repo->path);
590 if (repo->owner)
591 fprintf(f, "repo.owner=%s\n", repo->owner);
592 if (repo->desc) {
593 char *tmp = get_first_line(repo->desc);
594 fprintf(f, "repo.desc=%s\n", tmp);
595 free(tmp);
596 }
597 if (repo->readme)
598 fprintf(f, "repo.readme=%s\n", repo->readme);
599 if (repo->defbranch)
600 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
601 if (repo->module_link)
602 fprintf(f, "repo.module-link=%s\n", repo->module_link);
603 if (repo->section)
604 fprintf(f, "repo.section=%s\n", repo->section);
605 if (repo->clone_url)
606 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
607 fprintf(f, "repo.enable-commit-graph=%d\n",
608 repo->enable_commit_graph);
609 fprintf(f, "repo.enable-log-filecount=%d\n",
610 repo->enable_log_filecount);
611 fprintf(f, "repo.enable-log-linecount=%d\n",
612 repo->enable_log_linecount);
613 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
614 fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
615 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
616 fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
617 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
618 fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
619 if (repo->snapshots != ctx.cfg.snapshots) {
620 char *tmp = build_snapshot_setting(repo->snapshots);
621 fprintf(f, "repo.snapshots=%s\n", tmp);
622 free(tmp);
623 }
624 if (repo->max_stats != ctx.cfg.max_stats)
625 fprintf(f, "repo.max-stats=%s\n",
626 cgit_find_stats_periodname(repo->max_stats));
627 fprintf(f, "\n");
628}
629
630void print_repolist(FILE *f, struct cgit_repolist *list, int start)
631{
632 int i;
633
634 for(i = start; i < list->count; i++)
635 print_repo(f, &list->repos[i]);
636}
637
638/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
639 * and return 0 on success.
640 */
641static int generate_cached_repolist(const char *path, const char *cached_rc)
642{
643 char *locked_rc;
644 int idx;
645 FILE *f;
646
647 locked_rc = xstrdup(fmt("%s.lock", cached_rc));
648 f = fopen(locked_rc, "wx");
649 if (!f) {
650 /* Inform about the error unless the lockfile already existed,
651 * since that only means we've got concurrent requests.
652 */
653 if (errno != EEXIST)
654 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
655 locked_rc, strerror(errno), errno);
656 return errno;
657 }
658 idx = cgit_repolist.count;
659 if (ctx.cfg.project_list)
660 scan_projects(path, ctx.cfg.project_list, repo_config);
661 else
662 scan_tree(path, repo_config);
663 print_repolist(f, &cgit_repolist, idx);
664 if (rename(locked_rc, cached_rc))
665 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
666 locked_rc, cached_rc, strerror(errno), errno);
667 fclose(f);
668 return 0;
669}
670
671static void process_cached_repolist(const char *path)
672{
673 struct stat st;
674 char *cached_rc;
675 time_t age;
676 unsigned long hash;
677
678 hash = hash_str(path);
679 if (ctx.cfg.project_list)
680 hash += hash_str(ctx.cfg.project_list);
681 cached_rc = xstrdup(fmt("%s/rc-%8lx", ctx.cfg.cache_root, hash));
682
683 if (stat(cached_rc, &st)) {
684 /* Nothing is cached, we need to scan without forking. And
685 * if we fail to generate a cached repolist, we need to
686 * invoke scan_tree manually.
687 */
688 if (generate_cached_repolist(path, cached_rc)) {
689 if (ctx.cfg.project_list)
690 scan_projects(path, ctx.cfg.project_list,
691 repo_config);
692 else
693 scan_tree(path, repo_config);
694 }
695 return;
696 }
697
698 parse_configfile(cached_rc, config_cb);
699
700 /* If the cached configfile hasn't expired, lets exit now */
701 age = time(NULL) - st.st_mtime;
702 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
703 return;
704
705 /* The cached repolist has been parsed, but it was old. So lets
706 * rescan the specified path and generate a new cached repolist
707 * in a child-process to avoid latency for the current request.
708 */
709 if (fork())
710 return;
711
712 exit(generate_cached_repolist(path, cached_rc));
713}
714
715static void cgit_parse_args(int argc, const char **argv)
716{
717 int i;
718 int scan = 0;
719
720 for (i = 1; i < argc; i++) {
721 if (!strncmp(argv[i], "--cache=", 8)) {
722 ctx.cfg.cache_root = xstrdup(argv[i]+8);
723 }
724 if (!strcmp(argv[i], "--nocache")) {
725 ctx.cfg.nocache = 1;
726 }
727 if (!strcmp(argv[i], "--nohttp")) {
728 ctx.env.no_http = "1";
729 }
730 if (!strncmp(argv[i], "--query=", 8)) {
731 ctx.qry.raw = xstrdup(argv[i]+8);
732 }
733 if (!strncmp(argv[i], "--repo=", 7)) {
734 ctx.qry.repo = xstrdup(argv[i]+7);
735 }
736 if (!strncmp(argv[i], "--page=", 7)) {
737 ctx.qry.page = xstrdup(argv[i]+7);
738 }
739 if (!strncmp(argv[i], "--head=", 7)) {
740 ctx.qry.head = xstrdup(argv[i]+7);
741 ctx.qry.has_symref = 1;
742 }
743 if (!strncmp(argv[i], "--sha1=", 7)) {
744 ctx.qry.sha1 = xstrdup(argv[i]+7);
745 ctx.qry.has_sha1 = 1;
746 }
747 if (!strncmp(argv[i], "--ofs=", 6)) {
748 ctx.qry.ofs = atoi(argv[i]+6);
749 }
750 if (!strncmp(argv[i], "--scan-tree=", 12) ||
751 !strncmp(argv[i], "--scan-path=", 12)) {
752 /* HACK: the global snapshot bitmask defines the
753 * set of allowed snapshot formats, but the config
754 * file hasn't been parsed yet so the mask is
755 * currently 0. By setting all bits high before
756 * scanning we make sure that any in-repo cgitrc
757 * snapshot setting is respected by scan_tree().
758 * BTW: we assume that there'll never be more than
759 * 255 different snapshot formats supported by cgit...
760 */
761 ctx.cfg.snapshots = 0xFF;
762 scan++;
763 scan_tree(argv[i] + 12, repo_config);
764 }
765 }
766 if (scan) {
767 qsort(cgit_repolist.repos, cgit_repolist.count,
768 sizeof(struct cgit_repo), cmp_repos);
769 print_repolist(stdout, &cgit_repolist, 0);
770 exit(0);
771 }
772}
773
774static int calc_ttl()
775{
776 if (!ctx.repo)
777 return ctx.cfg.cache_root_ttl;
778
779 if (!ctx.qry.page)
780 return ctx.cfg.cache_repo_ttl;
781
782 if (ctx.qry.has_symref)
783 return ctx.cfg.cache_dynamic_ttl;
784
785 if (ctx.qry.has_sha1)
786 return ctx.cfg.cache_static_ttl;
787
788 return ctx.cfg.cache_repo_ttl;
789}
790
791int main(int argc, const char **argv)
792{
793 const char *path;
794 char *qry;
795 int err, ttl;
796
797 prepare_context(&ctx);
798 cgit_repolist.length = 0;
799 cgit_repolist.count = 0;
800 cgit_repolist.repos = NULL;
801
802 cgit_parse_args(argc, argv);
803 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
804 ctx.repo = NULL;
805 http_parse_querystring(ctx.qry.raw, querystring_cb);
806
807 /* If virtual-root isn't specified in cgitrc, lets pretend
808 * that virtual-root equals SCRIPT_NAME, minus any possibly
809 * trailing slashes.
810 */
811 if (!ctx.cfg.virtual_root && ctx.cfg.script_name) {
812 ctx.cfg.virtual_root = trim_end(ctx.cfg.script_name, '/');
813 if (!ctx.cfg.virtual_root)
814 ctx.cfg.virtual_root = "";
815 }
816
817 /* If no url parameter is specified on the querystring, lets
818 * use PATH_INFO as url. This allows cgit to work with virtual
819 * urls without the need for rewriterules in the webserver (as
820 * long as PATH_INFO is included in the cache lookup key).
821 */
822 path = ctx.env.path_info;
823 if (!ctx.qry.url && path) {
824 if (path[0] == '/')
825 path++;
826 ctx.qry.url = xstrdup(path);
827 if (ctx.qry.raw) {
828 qry = ctx.qry.raw;
829 ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
830 free(qry);
831 } else
832 ctx.qry.raw = xstrdup(ctx.qry.url);
833 cgit_parse_url(ctx.qry.url);
834 }
835
836 ttl = calc_ttl();
837 ctx.page.expires += ttl*60;
838 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
839 ctx.cfg.nocache = 1;
840 if (ctx.cfg.nocache)
841 ctx.cfg.cache_size = 0;
842 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
843 ctx.qry.raw, ttl, process_request, &ctx);
844 if (err)
845 cgit_print_error(fmt("Error processing page: %s (%d)",
846 strerror(err), err));
847 return err;
848}