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