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