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