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