cgit.c (view raw)
1/* cgit.c: cgi for the git scm
2 *
3 * Copyright (C) 2006 Lars Hjemli
4 * Copyright (C) 2010, 2012 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 "ui-blob.h"
18#include "ui-summary.h"
19#include "scan-tree.h"
20
21const char *cgit_version = CGIT_VERSION;
22
23static void add_mimetype(const char *name, const char *value)
24{
25 struct string_list_item *item;
26
27 item = string_list_insert(&ctx.cfg.mimetypes, xstrdup(name));
28 item->util = xstrdup(value);
29}
30
31static struct cgit_filter *new_filter(const char *cmd, filter_type filtertype)
32{
33 struct cgit_filter *f;
34 int args_size = 0;
35 int extra_args;
36
37 if (!cmd || !cmd[0])
38 return NULL;
39
40 switch (filtertype) {
41 case SOURCE:
42 case ABOUT:
43 extra_args = 1;
44 break;
45
46 case COMMIT:
47 default:
48 extra_args = 0;
49 break;
50 }
51
52 f = xmalloc(sizeof(struct cgit_filter));
53 f->cmd = xstrdup(cmd);
54 args_size = (2 + extra_args) * sizeof(char *);
55 f->argv = xmalloc(args_size);
56 memset(f->argv, 0, args_size);
57 f->argv[0] = f->cmd;
58 return f;
59}
60
61static void process_cached_repolist(const char *path);
62
63static void repo_config(struct cgit_repo *repo, const char *name, const char *value)
64{
65 struct string_list_item *item;
66
67 if (!strcmp(name, "name"))
68 repo->name = xstrdup(value);
69 else if (!strcmp(name, "clone-url"))
70 repo->clone_url = xstrdup(value);
71 else if (!strcmp(name, "desc"))
72 repo->desc = xstrdup(value);
73 else if (!strcmp(name, "owner"))
74 repo->owner = xstrdup(value);
75 else if (!strcmp(name, "defbranch"))
76 repo->defbranch = xstrdup(value);
77 else if (!strcmp(name, "snapshots"))
78 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
79 else if (!strcmp(name, "enable-commit-graph"))
80 repo->enable_commit_graph = atoi(value);
81 else if (!strcmp(name, "enable-log-filecount"))
82 repo->enable_log_filecount = atoi(value);
83 else if (!strcmp(name, "enable-log-linecount"))
84 repo->enable_log_linecount = atoi(value);
85 else if (!strcmp(name, "enable-remote-branches"))
86 repo->enable_remote_branches = atoi(value);
87 else if (!strcmp(name, "enable-subject-links"))
88 repo->enable_subject_links = atoi(value);
89 else if (!strcmp(name, "branch-sort")) {
90 if (!strcmp(value, "age"))
91 repo->branch_sort = 1;
92 if (!strcmp(value, "name"))
93 repo->branch_sort = 0;
94 } else if (!strcmp(name, "commit-sort")) {
95 if (!strcmp(value, "date"))
96 repo->commit_sort = 1;
97 if (!strcmp(value, "topo"))
98 repo->commit_sort = 2;
99 } else if (!strcmp(name, "max-stats"))
100 repo->max_stats = cgit_find_stats_period(value, NULL);
101 else if (!strcmp(name, "module-link"))
102 repo->module_link= xstrdup(value);
103 else if (!prefixcmp(name, "module-link.")) {
104 item = string_list_append(&repo->submodules, name + 12);
105 item->util = xstrdup(value);
106 } else if (!strcmp(name, "section"))
107 repo->section = xstrdup(value);
108 else if (!strcmp(name, "readme") && value != NULL)
109 repo->readme = xstrdup(value);
110 else if (!strcmp(name, "logo") && value != NULL)
111 repo->logo = xstrdup(value);
112 else if (!strcmp(name, "logo-link") && value != NULL)
113 repo->logo_link = xstrdup(value);
114 else if (ctx.cfg.enable_filter_overrides) {
115 if (!strcmp(name, "about-filter"))
116 repo->about_filter = new_filter(value, ABOUT);
117 else if (!strcmp(name, "commit-filter"))
118 repo->commit_filter = new_filter(value, COMMIT);
119 else if (!strcmp(name, "source-filter"))
120 repo->source_filter = new_filter(value, SOURCE);
121 }
122}
123
124static void config_cb(const char *name, const char *value)
125{
126 if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
127 ctx.cfg.section = xstrdup(value);
128 else if (!strcmp(name, "repo.url"))
129 ctx.repo = cgit_add_repo(value);
130 else if (ctx.repo && !strcmp(name, "repo.path"))
131 ctx.repo->path = trim_end(value, '/');
132 else if (ctx.repo && !prefixcmp(name, "repo."))
133 repo_config(ctx.repo, name + 5, value);
134 else if (!strcmp(name, "readme"))
135 ctx.cfg.readme = xstrdup(value);
136 else if (!strcmp(name, "root-title"))
137 ctx.cfg.root_title = xstrdup(value);
138 else if (!strcmp(name, "root-desc"))
139 ctx.cfg.root_desc = xstrdup(value);
140 else if (!strcmp(name, "root-readme"))
141 ctx.cfg.root_readme = xstrdup(value);
142 else if (!strcmp(name, "css"))
143 ctx.cfg.css = xstrdup(value);
144 else if (!strcmp(name, "favicon"))
145 ctx.cfg.favicon = xstrdup(value);
146 else if (!strcmp(name, "footer"))
147 ctx.cfg.footer = xstrdup(value);
148 else if (!strcmp(name, "head-include"))
149 ctx.cfg.head_include = xstrdup(value);
150 else if (!strcmp(name, "header"))
151 ctx.cfg.header = xstrdup(value);
152 else if (!strcmp(name, "logo"))
153 ctx.cfg.logo = xstrdup(value);
154 else if (!strcmp(name, "index-header"))
155 ctx.cfg.index_header = xstrdup(value);
156 else if (!strcmp(name, "index-info"))
157 ctx.cfg.index_info = xstrdup(value);
158 else if (!strcmp(name, "logo-link"))
159 ctx.cfg.logo_link = xstrdup(value);
160 else if (!strcmp(name, "module-link"))
161 ctx.cfg.module_link = xstrdup(value);
162 else if (!strcmp(name, "strict-export"))
163 ctx.cfg.strict_export = xstrdup(value);
164 else if (!strcmp(name, "virtual-root")) {
165 ctx.cfg.virtual_root = ensure_end(value, '/');
166 } else if (!strcmp(name, "nocache"))
167 ctx.cfg.nocache = atoi(value);
168 else if (!strcmp(name, "noplainemail"))
169 ctx.cfg.noplainemail = atoi(value);
170 else if (!strcmp(name, "noheader"))
171 ctx.cfg.noheader = atoi(value);
172 else if (!strcmp(name, "snapshots"))
173 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
174 else if (!strcmp(name, "enable-filter-overrides"))
175 ctx.cfg.enable_filter_overrides = atoi(value);
176 else if (!strcmp(name, "enable-http-clone"))
177 ctx.cfg.enable_http_clone = atoi(value);
178 else if (!strcmp(name, "enable-index-links"))
179 ctx.cfg.enable_index_links = atoi(value);
180 else if (!strcmp(name, "enable-index-owner"))
181 ctx.cfg.enable_index_owner = atoi(value);
182 else if (!strcmp(name, "enable-commit-graph"))
183 ctx.cfg.enable_commit_graph = atoi(value);
184 else if (!strcmp(name, "enable-log-filecount"))
185 ctx.cfg.enable_log_filecount = atoi(value);
186 else if (!strcmp(name, "enable-log-linecount"))
187 ctx.cfg.enable_log_linecount = atoi(value);
188 else if (!strcmp(name, "enable-remote-branches"))
189 ctx.cfg.enable_remote_branches = atoi(value);
190 else if (!strcmp(name, "enable-subject-links"))
191 ctx.cfg.enable_subject_links = atoi(value);
192 else if (!strcmp(name, "enable-tree-linenumbers"))
193 ctx.cfg.enable_tree_linenumbers = atoi(value);
194 else if (!strcmp(name, "enable-git-config"))
195 ctx.cfg.enable_git_config = atoi(value);
196 else if (!strcmp(name, "max-stats"))
197 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
198 else if (!strcmp(name, "cache-size"))
199 ctx.cfg.cache_size = atoi(value);
200 else if (!strcmp(name, "cache-root"))
201 ctx.cfg.cache_root = xstrdup(expand_macros(value));
202 else if (!strcmp(name, "cache-root-ttl"))
203 ctx.cfg.cache_root_ttl = atoi(value);
204 else if (!strcmp(name, "cache-repo-ttl"))
205 ctx.cfg.cache_repo_ttl = atoi(value);
206 else if (!strcmp(name, "cache-scanrc-ttl"))
207 ctx.cfg.cache_scanrc_ttl = atoi(value);
208 else if (!strcmp(name, "cache-static-ttl"))
209 ctx.cfg.cache_static_ttl = atoi(value);
210 else if (!strcmp(name, "cache-dynamic-ttl"))
211 ctx.cfg.cache_dynamic_ttl = atoi(value);
212 else if (!strcmp(name, "case-sensitive-sort"))
213 ctx.cfg.case_sensitive_sort = atoi(value);
214 else if (!strcmp(name, "about-filter"))
215 ctx.cfg.about_filter = new_filter(value, ABOUT);
216 else if (!strcmp(name, "commit-filter"))
217 ctx.cfg.commit_filter = new_filter(value, COMMIT);
218 else if (!strcmp(name, "embedded"))
219 ctx.cfg.embedded = atoi(value);
220 else if (!strcmp(name, "max-atom-items"))
221 ctx.cfg.max_atom_items = atoi(value);
222 else if (!strcmp(name, "max-message-length"))
223 ctx.cfg.max_msg_len = atoi(value);
224 else if (!strcmp(name, "max-repodesc-length"))
225 ctx.cfg.max_repodesc_len = atoi(value);
226 else if (!strcmp(name, "max-blob-size"))
227 ctx.cfg.max_blob_size = atoi(value);
228 else if (!strcmp(name, "max-repo-count"))
229 ctx.cfg.max_repo_count = atoi(value);
230 else if (!strcmp(name, "max-commit-count"))
231 ctx.cfg.max_commit_count = atoi(value);
232 else if (!strcmp(name, "project-list"))
233 ctx.cfg.project_list = xstrdup(expand_macros(value));
234 else if (!strcmp(name, "scan-path"))
235 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
236 process_cached_repolist(expand_macros(value));
237 else if (ctx.cfg.project_list)
238 scan_projects(expand_macros(value),
239 ctx.cfg.project_list, repo_config);
240 else
241 scan_tree(expand_macros(value), repo_config);
242 else if (!strcmp(name, "scan-hidden-path"))
243 ctx.cfg.scan_hidden_path = atoi(value);
244 else if (!strcmp(name, "section-from-path"))
245 ctx.cfg.section_from_path = atoi(value);
246 else if (!strcmp(name, "repository-sort"))
247 ctx.cfg.repository_sort = xstrdup(value);
248 else if (!strcmp(name, "section-sort"))
249 ctx.cfg.section_sort = atoi(value);
250 else if (!strcmp(name, "source-filter"))
251 ctx.cfg.source_filter = new_filter(value, SOURCE);
252 else if (!strcmp(name, "summary-log"))
253 ctx.cfg.summary_log = atoi(value);
254 else if (!strcmp(name, "summary-branches"))
255 ctx.cfg.summary_branches = atoi(value);
256 else if (!strcmp(name, "summary-tags"))
257 ctx.cfg.summary_tags = atoi(value);
258 else if (!strcmp(name, "side-by-side-diffs"))
259 ctx.cfg.ssdiff = atoi(value);
260 else if (!strcmp(name, "agefile"))
261 ctx.cfg.agefile = xstrdup(value);
262 else if (!strcmp(name, "mimetype-file"))
263 ctx.cfg.mimetype_file = xstrdup(value);
264 else if (!strcmp(name, "renamelimit"))
265 ctx.cfg.renamelimit = atoi(value);
266 else if (!strcmp(name, "remove-suffix"))
267 ctx.cfg.remove_suffix = atoi(value);
268 else if (!strcmp(name, "robots"))
269 ctx.cfg.robots = xstrdup(value);
270 else if (!strcmp(name, "clone-prefix"))
271 ctx.cfg.clone_prefix = xstrdup(value);
272 else if (!strcmp(name, "clone-url"))
273 ctx.cfg.clone_url = xstrdup(value);
274 else if (!strcmp(name, "local-time"))
275 ctx.cfg.local_time = atoi(value);
276 else if (!strcmp(name, "commit-sort")) {
277 if (!strcmp(value, "date"))
278 ctx.cfg.commit_sort = 1;
279 if (!strcmp(value, "topo"))
280 ctx.cfg.commit_sort = 2;
281 } else if (!strcmp(name, "branch-sort")) {
282 if (!strcmp(value, "age"))
283 ctx.cfg.branch_sort = 1;
284 if (!strcmp(value, "name"))
285 ctx.cfg.branch_sort = 0;
286 } else if (!prefixcmp(name, "mimetype."))
287 add_mimetype(name + 9, value);
288 else if (!strcmp(name, "include"))
289 parse_configfile(expand_macros(value), config_cb);
290}
291
292static void querystring_cb(const char *name, const char *value)
293{
294 if (!value)
295 value = "";
296
297 if (!strcmp(name,"r")) {
298 ctx.qry.repo = xstrdup(value);
299 ctx.repo = cgit_get_repoinfo(value);
300 } else if (!strcmp(name, "p")) {
301 ctx.qry.page = xstrdup(value);
302 } else if (!strcmp(name, "url")) {
303 if (*value == '/')
304 value++;
305 ctx.qry.url = xstrdup(value);
306 cgit_parse_url(value);
307 } else if (!strcmp(name, "qt")) {
308 ctx.qry.grep = xstrdup(value);
309 } else if (!strcmp(name, "q")) {
310 ctx.qry.search = xstrdup(value);
311 } else if (!strcmp(name, "h")) {
312 ctx.qry.head = xstrdup(value);
313 ctx.qry.has_symref = 1;
314 } else if (!strcmp(name, "id")) {
315 ctx.qry.sha1 = xstrdup(value);
316 ctx.qry.has_sha1 = 1;
317 } else if (!strcmp(name, "id2")) {
318 ctx.qry.sha2 = xstrdup(value);
319 ctx.qry.has_sha1 = 1;
320 } else if (!strcmp(name, "ofs")) {
321 ctx.qry.ofs = atoi(value);
322 } else if (!strcmp(name, "path")) {
323 ctx.qry.path = trim_end(value, '/');
324 } else if (!strcmp(name, "name")) {
325 ctx.qry.name = xstrdup(value);
326 } else if (!strcmp(name, "mimetype")) {
327 ctx.qry.mimetype = xstrdup(value);
328 } else if (!strcmp(name, "s")) {
329 ctx.qry.sort = xstrdup(value);
330 } else if (!strcmp(name, "showmsg")) {
331 ctx.qry.showmsg = atoi(value);
332 } else if (!strcmp(name, "period")) {
333 ctx.qry.period = xstrdup(value);
334 } else if (!strcmp(name, "ss")) {
335 ctx.qry.ssdiff = atoi(value);
336 ctx.qry.has_ssdiff = 1;
337 } else if (!strcmp(name, "all")) {
338 ctx.qry.show_all = atoi(value);
339 } else if (!strcmp(name, "context")) {
340 ctx.qry.context = atoi(value);
341 } else if (!strcmp(name, "ignorews")) {
342 ctx.qry.ignorews = atoi(value);
343 }
344}
345
346static void prepare_context(struct cgit_context *ctx)
347{
348 memset(ctx, 0, sizeof(*ctx));
349 ctx->cfg.agefile = "info/web/last-modified";
350 ctx->cfg.nocache = 0;
351 ctx->cfg.cache_size = 0;
352 ctx->cfg.cache_dynamic_ttl = 5;
353 ctx->cfg.cache_max_create_time = 5;
354 ctx->cfg.cache_repo_ttl = 5;
355 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
356 ctx->cfg.cache_root_ttl = 5;
357 ctx->cfg.cache_scanrc_ttl = 15;
358 ctx->cfg.cache_static_ttl = -1;
359 ctx->cfg.case_sensitive_sort = 1;
360 ctx->cfg.branch_sort = 0;
361 ctx->cfg.commit_sort = 0;
362 ctx->cfg.css = "/cgit.css";
363 ctx->cfg.logo = "/cgit.png";
364 ctx->cfg.local_time = 0;
365 ctx->cfg.enable_http_clone = 1;
366 ctx->cfg.enable_index_owner = 1;
367 ctx->cfg.enable_tree_linenumbers = 1;
368 ctx->cfg.enable_git_config = 0;
369 ctx->cfg.max_repo_count = 50;
370 ctx->cfg.max_commit_count = 50;
371 ctx->cfg.max_lock_attempts = 5;
372 ctx->cfg.max_msg_len = 80;
373 ctx->cfg.max_repodesc_len = 80;
374 ctx->cfg.max_blob_size = 0;
375 ctx->cfg.max_stats = 0;
376 ctx->cfg.project_list = NULL;
377 ctx->cfg.renamelimit = -1;
378 ctx->cfg.remove_suffix = 0;
379 ctx->cfg.robots = "index, nofollow";
380 ctx->cfg.root_title = "Git repository browser";
381 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
382 ctx->cfg.scan_hidden_path = 0;
383 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
384 ctx->cfg.section = "";
385 ctx->cfg.repository_sort = "name";
386 ctx->cfg.section_sort = 1;
387 ctx->cfg.summary_branches = 10;
388 ctx->cfg.summary_log = 10;
389 ctx->cfg.summary_tags = 10;
390 ctx->cfg.max_atom_items = 10;
391 ctx->cfg.ssdiff = 0;
392 ctx->env.cgit_config = getenv("CGIT_CONFIG");
393 ctx->env.http_host = getenv("HTTP_HOST");
394 ctx->env.https = getenv("HTTPS");
395 ctx->env.no_http = getenv("NO_HTTP");
396 ctx->env.path_info = getenv("PATH_INFO");
397 ctx->env.query_string = getenv("QUERY_STRING");
398 ctx->env.request_method = getenv("REQUEST_METHOD");
399 ctx->env.script_name = getenv("SCRIPT_NAME");
400 ctx->env.server_name = getenv("SERVER_NAME");
401 ctx->env.server_port = getenv("SERVER_PORT");
402 ctx->page.mimetype = "text/html";
403 ctx->page.charset = PAGE_ENCODING;
404 ctx->page.filename = NULL;
405 ctx->page.size = 0;
406 ctx->page.modified = time(NULL);
407 ctx->page.expires = ctx->page.modified;
408 ctx->page.etag = NULL;
409 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
410 if (ctx->env.script_name)
411 ctx->cfg.script_name = xstrdup(ctx->env.script_name);
412 if (ctx->env.query_string)
413 ctx->qry.raw = xstrdup(ctx->env.query_string);
414 if (!ctx->env.cgit_config)
415 ctx->env.cgit_config = CGIT_CONFIG;
416}
417
418struct refmatch {
419 char *req_ref;
420 char *first_ref;
421 int match;
422};
423
424static int find_current_ref(const char *refname, const unsigned char *sha1,
425 int flags, void *cb_data)
426{
427 struct refmatch *info;
428
429 info = (struct refmatch *)cb_data;
430 if (!strcmp(refname, info->req_ref))
431 info->match = 1;
432 if (!info->first_ref)
433 info->first_ref = xstrdup(refname);
434 return info->match;
435}
436
437static void free_refmatch_inner(struct refmatch *info)
438{
439 if (info->first_ref)
440 free(info->first_ref);
441}
442
443static char *find_default_branch(struct cgit_repo *repo)
444{
445 struct refmatch info;
446 char *ref;
447
448 info.req_ref = repo->defbranch;
449 info.first_ref = NULL;
450 info.match = 0;
451 for_each_branch_ref(find_current_ref, &info);
452 if (info.match)
453 ref = info.req_ref;
454 else
455 ref = info.first_ref;
456 if (ref)
457 ref = xstrdup(ref);
458 free_refmatch_inner(&info);
459
460 return ref;
461}
462
463static char *guess_defbranch(void)
464{
465 const char *ref;
466 unsigned char sha1[20];
467
468 ref = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
469 if (!ref || prefixcmp(ref, "refs/heads/"))
470 return "master";
471 return xstrdup(ref + 11);
472}
473
474static void choose_readme(struct cgit_repo *repo)
475{
476 char *entry, *filename, *ref;
477
478 /* If there's no space, we skip the possibly expensive
479 * selection process. */
480 if (!repo->readme || !strchr(repo->readme, ' '))
481 return;
482
483 for (entry = strtok(repo->readme, " "); entry; entry = strtok(NULL, " ")) {
484 cgit_parse_readme(entry, NULL, &filename, &ref, repo);
485 if (!(*filename)) {
486 free(filename);
487 free(ref);
488 continue;
489 }
490 if (*ref && cgit_ref_path_exists(filename, ref)) {
491 free(filename);
492 free(ref);
493 break;
494 }
495 if (!access(filename, R_OK)) {
496 free(filename);
497 free(ref);
498 break;
499 }
500 free(filename);
501 free(ref);
502 }
503 repo->readme = entry;
504}
505
506static int prepare_repo_cmd(struct cgit_context *ctx)
507{
508 unsigned char sha1[20];
509 int nongit = 0;
510 int rc;
511
512 /* The path to the git repository. */
513 setenv("GIT_DIR", ctx->repo->path, 1);
514
515 /* Do not look in /etc/ for gitconfig and gitattributes. */
516 setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
517 setenv("GIT_ATTR_NOSYSTEM", "1", 1);
518 unsetenv("HOME");
519 unsetenv("XDG_CONFIG_HOME");
520
521 /* Setup the git directory and initialize the notes system. Both of these
522 * load local configuration from the git repository, so we do them both while
523 * the HOME variables are unset. */
524 setup_git_directory_gently(&nongit);
525 init_display_notes(NULL);
526
527 if (nongit) {
528 const char *name = ctx->repo->name;
529 rc = errno;
530 ctx->page.title = fmtalloc("%s - %s", ctx->cfg.root_title,
531 "config error");
532 ctx->repo = NULL;
533 cgit_print_http_headers(ctx);
534 cgit_print_docstart(ctx);
535 cgit_print_pageheader(ctx);
536 cgit_print_error("Failed to open %s: %s", name,
537 rc ? strerror(rc) : "Not a valid git repository");
538 cgit_print_docend();
539 return 1;
540 }
541 ctx->page.title = fmtalloc("%s - %s", ctx->repo->name, ctx->repo->desc);
542
543 if (!ctx->repo->defbranch)
544 ctx->repo->defbranch = guess_defbranch();
545
546 if (!ctx->qry.head) {
547 ctx->qry.nohead = 1;
548 ctx->qry.head = find_default_branch(ctx->repo);
549 }
550
551 if (!ctx->qry.head) {
552 cgit_print_http_headers(ctx);
553 cgit_print_docstart(ctx);
554 cgit_print_pageheader(ctx);
555 cgit_print_error("Repository seems to be empty");
556 cgit_print_docend();
557 return 1;
558 }
559
560 if (get_sha1(ctx->qry.head, sha1)) {
561 char *tmp = xstrdup(ctx->qry.head);
562 ctx->qry.head = ctx->repo->defbranch;
563 ctx->page.status = 404;
564 ctx->page.statusmsg = "Not found";
565 cgit_print_http_headers(ctx);
566 cgit_print_docstart(ctx);
567 cgit_print_pageheader(ctx);
568 cgit_print_error("Invalid branch: %s", tmp);
569 cgit_print_docend();
570 return 1;
571 }
572 sort_string_list(&ctx->repo->submodules);
573 cgit_prepare_repo_env(ctx->repo);
574 choose_readme(ctx->repo);
575 return 0;
576}
577
578static void process_request(void *cbdata)
579{
580 struct cgit_context *ctx = cbdata;
581 struct cgit_cmd *cmd;
582
583 cmd = cgit_get_cmd(ctx);
584 if (!cmd) {
585 ctx->page.title = "cgit error";
586 ctx->page.status = 404;
587 ctx->page.statusmsg = "Not found";
588 cgit_print_http_headers(ctx);
589 cgit_print_docstart(ctx);
590 cgit_print_pageheader(ctx);
591 cgit_print_error("Invalid request");
592 cgit_print_docend();
593 return;
594 }
595
596 if (!ctx->cfg.enable_http_clone && cmd->is_clone) {
597 html_status(404, "Not found", 0);
598 return;
599 }
600
601 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
602 * in-project path limit to be made available at ctx->qry.vpath.
603 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
604 */
605 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
606
607 if (cmd->want_repo && !ctx->repo) {
608 cgit_print_http_headers(ctx);
609 cgit_print_docstart(ctx);
610 cgit_print_pageheader(ctx);
611 cgit_print_error("No repository selected");
612 cgit_print_docend();
613 return;
614 }
615
616 if (ctx->repo && prepare_repo_cmd(ctx))
617 return;
618
619 if (cmd->want_layout) {
620 cgit_print_http_headers(ctx);
621 cgit_print_docstart(ctx);
622 cgit_print_pageheader(ctx);
623 }
624
625 cmd->fn(ctx);
626
627 if (cmd->want_layout)
628 cgit_print_docend();
629}
630
631static int cmp_repos(const void *a, const void *b)
632{
633 const struct cgit_repo *ra = a, *rb = b;
634 return strcmp(ra->url, rb->url);
635}
636
637static char *build_snapshot_setting(int bitmap)
638{
639 const struct cgit_snapshot_format *f;
640 struct strbuf result = STRBUF_INIT;
641
642 for (f = cgit_snapshot_formats; f->suffix; f++) {
643 if (f->bit & bitmap) {
644 if (result.len)
645 strbuf_addch(&result, ' ');
646 strbuf_addstr(&result, f->suffix);
647 }
648 }
649 return strbuf_detach(&result, NULL);
650}
651
652static char *get_first_line(char *txt)
653{
654 char *t = xstrdup(txt);
655 char *p = strchr(t, '\n');
656 if (p)
657 *p = '\0';
658 return t;
659}
660
661static void print_repo(FILE *f, struct cgit_repo *repo)
662{
663 fprintf(f, "repo.url=%s\n", repo->url);
664 fprintf(f, "repo.name=%s\n", repo->name);
665 fprintf(f, "repo.path=%s\n", repo->path);
666 if (repo->owner)
667 fprintf(f, "repo.owner=%s\n", repo->owner);
668 if (repo->desc) {
669 char *tmp = get_first_line(repo->desc);
670 fprintf(f, "repo.desc=%s\n", tmp);
671 free(tmp);
672 }
673 if (repo->readme)
674 fprintf(f, "repo.readme=%s\n", repo->readme);
675 if (repo->defbranch)
676 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
677 if (repo->module_link)
678 fprintf(f, "repo.module-link=%s\n", repo->module_link);
679 if (repo->section)
680 fprintf(f, "repo.section=%s\n", repo->section);
681 if (repo->clone_url)
682 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
683 fprintf(f, "repo.enable-commit-graph=%d\n",
684 repo->enable_commit_graph);
685 fprintf(f, "repo.enable-log-filecount=%d\n",
686 repo->enable_log_filecount);
687 fprintf(f, "repo.enable-log-linecount=%d\n",
688 repo->enable_log_linecount);
689 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
690 fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
691 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
692 fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
693 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
694 fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
695 if (repo->snapshots != ctx.cfg.snapshots) {
696 char *tmp = build_snapshot_setting(repo->snapshots);
697 fprintf(f, "repo.snapshots=%s\n", tmp ? tmp : "");
698 free(tmp);
699 }
700 if (repo->max_stats != ctx.cfg.max_stats)
701 fprintf(f, "repo.max-stats=%s\n",
702 cgit_find_stats_periodname(repo->max_stats));
703 if (repo->logo)
704 fprintf(f, "repo.logo=%s\n", repo->logo);
705 if (repo->logo_link)
706 fprintf(f, "repo.logo-link=%s\n", repo->logo_link);
707 fprintf(f, "repo.enable-remote-branches=%d\n", repo->enable_remote_branches);
708 fprintf(f, "repo.enable-subject-links=%d\n", repo->enable_subject_links);
709 if (repo->branch_sort == 1)
710 fprintf(f, "repo.branch-sort=age\n");
711 if (repo->commit_sort) {
712 if (repo->commit_sort == 1)
713 fprintf(f, "repo.commit-sort=date\n");
714 else if (repo->commit_sort == 2)
715 fprintf(f, "repo.commit-sort=topo\n");
716 }
717 fprintf(f, "\n");
718}
719
720static void print_repolist(FILE *f, struct cgit_repolist *list, int start)
721{
722 int i;
723
724 for (i = start; i < list->count; i++)
725 print_repo(f, &list->repos[i]);
726}
727
728/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
729 * and return 0 on success.
730 */
731static int generate_cached_repolist(const char *path, const char *cached_rc)
732{
733 struct strbuf locked_rc = STRBUF_INIT;
734 int result = 0;
735 int idx;
736 FILE *f;
737
738 strbuf_addf(&locked_rc, "%s.lock", cached_rc);
739 f = fopen(locked_rc.buf, "wx");
740 if (!f) {
741 /* Inform about the error unless the lockfile already existed,
742 * since that only means we've got concurrent requests.
743 */
744 result = errno;
745 if (result != EEXIST)
746 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
747 locked_rc.buf, strerror(result), result);
748 goto out;
749 }
750 idx = cgit_repolist.count;
751 if (ctx.cfg.project_list)
752 scan_projects(path, ctx.cfg.project_list, repo_config);
753 else
754 scan_tree(path, repo_config);
755 print_repolist(f, &cgit_repolist, idx);
756 if (rename(locked_rc.buf, cached_rc))
757 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
758 locked_rc.buf, cached_rc, strerror(errno), errno);
759 fclose(f);
760out:
761 strbuf_release(&locked_rc);
762 return result;
763}
764
765static void process_cached_repolist(const char *path)
766{
767 struct stat st;
768 struct strbuf cached_rc = STRBUF_INIT;
769 time_t age;
770 unsigned long hash;
771
772 hash = hash_str(path);
773 if (ctx.cfg.project_list)
774 hash += hash_str(ctx.cfg.project_list);
775 strbuf_addf(&cached_rc, "%s/rc-%8lx", ctx.cfg.cache_root, hash);
776
777 if (stat(cached_rc.buf, &st)) {
778 /* Nothing is cached, we need to scan without forking. And
779 * if we fail to generate a cached repolist, we need to
780 * invoke scan_tree manually.
781 */
782 if (generate_cached_repolist(path, cached_rc.buf)) {
783 if (ctx.cfg.project_list)
784 scan_projects(path, ctx.cfg.project_list,
785 repo_config);
786 else
787 scan_tree(path, repo_config);
788 }
789 goto out;
790 }
791
792 parse_configfile(cached_rc.buf, config_cb);
793
794 /* If the cached configfile hasn't expired, lets exit now */
795 age = time(NULL) - st.st_mtime;
796 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
797 goto out;
798
799 /* The cached repolist has been parsed, but it was old. So lets
800 * rescan the specified path and generate a new cached repolist
801 * in a child-process to avoid latency for the current request.
802 */
803 if (fork())
804 goto out;
805
806 exit(generate_cached_repolist(path, cached_rc.buf));
807out:
808 strbuf_release(&cached_rc);
809}
810
811static void cgit_parse_args(int argc, const char **argv)
812{
813 int i;
814 int scan = 0;
815
816 for (i = 1; i < argc; i++) {
817 if (!strncmp(argv[i], "--cache=", 8)) {
818 ctx.cfg.cache_root = xstrdup(argv[i] + 8);
819 }
820 if (!strcmp(argv[i], "--nocache")) {
821 ctx.cfg.nocache = 1;
822 }
823 if (!strcmp(argv[i], "--nohttp")) {
824 ctx.env.no_http = "1";
825 }
826 if (!strncmp(argv[i], "--query=", 8)) {
827 ctx.qry.raw = xstrdup(argv[i] + 8);
828 }
829 if (!strncmp(argv[i], "--repo=", 7)) {
830 ctx.qry.repo = xstrdup(argv[i] + 7);
831 }
832 if (!strncmp(argv[i], "--page=", 7)) {
833 ctx.qry.page = xstrdup(argv[i] + 7);
834 }
835 if (!strncmp(argv[i], "--head=", 7)) {
836 ctx.qry.head = xstrdup(argv[i] + 7);
837 ctx.qry.has_symref = 1;
838 }
839 if (!strncmp(argv[i], "--sha1=", 7)) {
840 ctx.qry.sha1 = xstrdup(argv[i] + 7);
841 ctx.qry.has_sha1 = 1;
842 }
843 if (!strncmp(argv[i], "--ofs=", 6)) {
844 ctx.qry.ofs = atoi(argv[i] + 6);
845 }
846 if (!strncmp(argv[i], "--scan-tree=", 12) ||
847 !strncmp(argv[i], "--scan-path=", 12)) {
848 /* HACK: the global snapshot bitmask defines the
849 * set of allowed snapshot formats, but the config
850 * file hasn't been parsed yet so the mask is
851 * currently 0. By setting all bits high before
852 * scanning we make sure that any in-repo cgitrc
853 * snapshot setting is respected by scan_tree().
854 * BTW: we assume that there'll never be more than
855 * 255 different snapshot formats supported by cgit...
856 */
857 ctx.cfg.snapshots = 0xFF;
858 scan++;
859 scan_tree(argv[i] + 12, repo_config);
860 }
861 }
862 if (scan) {
863 qsort(cgit_repolist.repos, cgit_repolist.count,
864 sizeof(struct cgit_repo), cmp_repos);
865 print_repolist(stdout, &cgit_repolist, 0);
866 exit(0);
867 }
868}
869
870static int calc_ttl()
871{
872 if (!ctx.repo)
873 return ctx.cfg.cache_root_ttl;
874
875 if (!ctx.qry.page)
876 return ctx.cfg.cache_repo_ttl;
877
878 if (ctx.qry.has_symref)
879 return ctx.cfg.cache_dynamic_ttl;
880
881 if (ctx.qry.has_sha1)
882 return ctx.cfg.cache_static_ttl;
883
884 return ctx.cfg.cache_repo_ttl;
885}
886
887int main(int argc, const char **argv)
888{
889 const char *path;
890 int err, ttl;
891
892 prepare_context(&ctx);
893 cgit_repolist.length = 0;
894 cgit_repolist.count = 0;
895 cgit_repolist.repos = NULL;
896
897 cgit_parse_args(argc, argv);
898 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
899 ctx.repo = NULL;
900 http_parse_querystring(ctx.qry.raw, querystring_cb);
901
902 /* If virtual-root isn't specified in cgitrc, lets pretend
903 * that virtual-root equals SCRIPT_NAME, minus any possibly
904 * trailing slashes.
905 */
906 if (!ctx.cfg.virtual_root && ctx.cfg.script_name)
907 ctx.cfg.virtual_root = ensure_end(ctx.cfg.script_name, '/');
908
909 /* If no url parameter is specified on the querystring, lets
910 * use PATH_INFO as url. This allows cgit to work with virtual
911 * urls without the need for rewriterules in the webserver (as
912 * long as PATH_INFO is included in the cache lookup key).
913 */
914 path = ctx.env.path_info;
915 if (!ctx.qry.url && path) {
916 if (path[0] == '/')
917 path++;
918 ctx.qry.url = xstrdup(path);
919 if (ctx.qry.raw) {
920 char *newqry = fmtalloc("%s?%s", path, ctx.qry.raw);
921 free(ctx.qry.raw);
922 ctx.qry.raw = newqry;
923 } else
924 ctx.qry.raw = xstrdup(ctx.qry.url);
925 cgit_parse_url(ctx.qry.url);
926 }
927
928 ttl = calc_ttl();
929 ctx.page.expires += ttl * 60;
930 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
931 ctx.cfg.nocache = 1;
932 if (ctx.cfg.nocache)
933 ctx.cfg.cache_size = 0;
934 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
935 ctx.qry.raw, ttl, process_request, &ctx);
936 if (err)
937 cgit_print_error("Error processing page: %s (%d)",
938 strerror(err), err);
939 return err;
940}