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