cgit.c (view raw)
1/* cgit.c: cgi for the git scm
2 *
3 * Copyright (C) 2006 Lars Hjemli
4 * Copyright (C) 2010, 2012 Jason A. Donenfeld <Jason@zx2c4.com>
5 *
6 * Licensed under GNU General Public License v2
7 * (see COPYING for full license text)
8 */
9
10#include "cgit.h"
11#include "cache.h"
12#include "cmd.h"
13#include "configfile.h"
14#include "html.h"
15#include "ui-shared.h"
16#include "ui-stats.h"
17#include "scan-tree.h"
18
19const char *cgit_version = CGIT_VERSION;
20
21static void add_mimetype(const char *name, const char *value)
22{
23 struct string_list_item *item;
24
25 item = string_list_insert(&ctx.cfg.mimetypes, xstrdup(name));
26 item->util = xstrdup(value);
27}
28
29static struct cgit_filter *new_filter(const char *cmd, filter_type filtertype)
30{
31 struct cgit_filter *f;
32 int args_size = 0;
33 int extra_args;
34
35 if (!cmd || !cmd[0])
36 return NULL;
37
38 switch (filtertype) {
39 case SOURCE:
40 extra_args = 1;
41 break;
42
43 case ABOUT:
44 case COMMIT:
45 default:
46 extra_args = 0;
47 break;
48 }
49
50 f = xmalloc(sizeof(struct cgit_filter));
51 f->cmd = xstrdup(cmd);
52 args_size = (2 + extra_args) * sizeof(char *);
53 f->argv = xmalloc(args_size);
54 memset(f->argv, 0, args_size);
55 f->argv[0] = f->cmd;
56 return f;
57}
58
59static void process_cached_repolist(const char *path);
60
61static void repo_config(struct cgit_repo *repo, const char *name, const char *value)
62{
63 struct string_list_item *item;
64
65 if (!strcmp(name, "name"))
66 repo->name = xstrdup(value);
67 else if (!strcmp(name, "clone-url"))
68 repo->clone_url = xstrdup(value);
69 else if (!strcmp(name, "desc"))
70 repo->desc = xstrdup(value);
71 else if (!strcmp(name, "owner"))
72 repo->owner = xstrdup(value);
73 else if (!strcmp(name, "defbranch"))
74 repo->defbranch = xstrdup(value);
75 else if (!strcmp(name, "snapshots"))
76 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
77 else if (!strcmp(name, "enable-commit-graph"))
78 repo->enable_commit_graph = atoi(value);
79 else if (!strcmp(name, "enable-log-filecount"))
80 repo->enable_log_filecount = atoi(value);
81 else if (!strcmp(name, "enable-log-linecount"))
82 repo->enable_log_linecount = atoi(value);
83 else if (!strcmp(name, "enable-remote-branches"))
84 repo->enable_remote_branches = atoi(value);
85 else if (!strcmp(name, "enable-subject-links"))
86 repo->enable_subject_links = atoi(value);
87 else if (!strcmp(name, "commit-sort")) {
88 if (!strcmp(value, "date"))
89 repo->commit_sort = 1;
90 if (!strcmp(value, "topo"))
91 repo->commit_sort = 2;
92 } else if (!strcmp(name, "max-stats"))
93 repo->max_stats = cgit_find_stats_period(value, NULL);
94 else if (!strcmp(name, "module-link"))
95 repo->module_link= xstrdup(value);
96 else if (!prefixcmp(name, "module-link.")) {
97 item = string_list_append(&repo->submodules, name + 12);
98 item->util = xstrdup(value);
99 } else if (!strcmp(name, "section"))
100 repo->section = xstrdup(value);
101 else if (!strcmp(name, "readme") && value != NULL)
102 repo->readme = xstrdup(value);
103 else if (!strcmp(name, "logo") && value != NULL)
104 repo->logo = xstrdup(value);
105 else if (!strcmp(name, "logo-link") && value != NULL)
106 repo->logo_link = xstrdup(value);
107 else if (ctx.cfg.enable_filter_overrides) {
108 if (!strcmp(name, "about-filter"))
109 repo->about_filter = new_filter(value, ABOUT);
110 else if (!strcmp(name, "commit-filter"))
111 repo->commit_filter = new_filter(value, COMMIT);
112 else if (!strcmp(name, "source-filter"))
113 repo->source_filter = new_filter(value, SOURCE);
114 }
115}
116
117static void config_cb(const char *name, const char *value)
118{
119 if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
120 ctx.cfg.section = xstrdup(value);
121 else if (!strcmp(name, "repo.url"))
122 ctx.repo = cgit_add_repo(value);
123 else if (ctx.repo && !strcmp(name, "repo.path"))
124 ctx.repo->path = trim_end(value, '/');
125 else if (ctx.repo && !prefixcmp(name, "repo."))
126 repo_config(ctx.repo, name + 5, value);
127 else if (!strcmp(name, "readme"))
128 ctx.cfg.readme = xstrdup(value);
129 else if (!strcmp(name, "root-title"))
130 ctx.cfg.root_title = xstrdup(value);
131 else if (!strcmp(name, "root-desc"))
132 ctx.cfg.root_desc = xstrdup(value);
133 else if (!strcmp(name, "root-readme"))
134 ctx.cfg.root_readme = xstrdup(value);
135 else if (!strcmp(name, "css"))
136 ctx.cfg.css = xstrdup(value);
137 else if (!strcmp(name, "favicon"))
138 ctx.cfg.favicon = xstrdup(value);
139 else if (!strcmp(name, "footer"))
140 ctx.cfg.footer = xstrdup(value);
141 else if (!strcmp(name, "head-include"))
142 ctx.cfg.head_include = xstrdup(value);
143 else if (!strcmp(name, "header"))
144 ctx.cfg.header = xstrdup(value);
145 else if (!strcmp(name, "logo"))
146 ctx.cfg.logo = xstrdup(value);
147 else if (!strcmp(name, "index-header"))
148 ctx.cfg.index_header = xstrdup(value);
149 else if (!strcmp(name, "index-info"))
150 ctx.cfg.index_info = xstrdup(value);
151 else if (!strcmp(name, "logo-link"))
152 ctx.cfg.logo_link = xstrdup(value);
153 else if (!strcmp(name, "module-link"))
154 ctx.cfg.module_link = xstrdup(value);
155 else if (!strcmp(name, "strict-export"))
156 ctx.cfg.strict_export = xstrdup(value);
157 else if (!strcmp(name, "virtual-root")) {
158 ctx.cfg.virtual_root = trim_end(value, '/');
159 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
160 ctx.cfg.virtual_root = "";
161 } else if (!strcmp(name, "nocache"))
162 ctx.cfg.nocache = atoi(value);
163 else if (!strcmp(name, "noplainemail"))
164 ctx.cfg.noplainemail = atoi(value);
165 else if (!strcmp(name, "noheader"))
166 ctx.cfg.noheader = atoi(value);
167 else if (!strcmp(name, "snapshots"))
168 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
169 else if (!strcmp(name, "enable-filter-overrides"))
170 ctx.cfg.enable_filter_overrides = atoi(value);
171 else if (!strcmp(name, "enable-http-clone"))
172 ctx.cfg.enable_http_clone = atoi(value);
173 else if (!strcmp(name, "enable-index-links"))
174 ctx.cfg.enable_index_links = atoi(value);
175 else if (!strcmp(name, "enable-index-owner"))
176 ctx.cfg.enable_index_owner = atoi(value);
177 else if (!strcmp(name, "enable-commit-graph"))
178 ctx.cfg.enable_commit_graph = atoi(value);
179 else if (!strcmp(name, "enable-log-filecount"))
180 ctx.cfg.enable_log_filecount = atoi(value);
181 else if (!strcmp(name, "enable-log-linecount"))
182 ctx.cfg.enable_log_linecount = atoi(value);
183 else if (!strcmp(name, "enable-remote-branches"))
184 ctx.cfg.enable_remote_branches = atoi(value);
185 else if (!strcmp(name, "enable-subject-links"))
186 ctx.cfg.enable_subject_links = atoi(value);
187 else if (!strcmp(name, "enable-tree-linenumbers"))
188 ctx.cfg.enable_tree_linenumbers = atoi(value);
189 else if (!strcmp(name, "enable-git-config"))
190 ctx.cfg.enable_git_config = atoi(value);
191 else if (!strcmp(name, "max-stats"))
192 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
193 else if (!strcmp(name, "cache-size"))
194 ctx.cfg.cache_size = atoi(value);
195 else if (!strcmp(name, "cache-root"))
196 ctx.cfg.cache_root = xstrdup(expand_macros(value));
197 else if (!strcmp(name, "cache-root-ttl"))
198 ctx.cfg.cache_root_ttl = atoi(value);
199 else if (!strcmp(name, "cache-repo-ttl"))
200 ctx.cfg.cache_repo_ttl = atoi(value);
201 else if (!strcmp(name, "cache-scanrc-ttl"))
202 ctx.cfg.cache_scanrc_ttl = atoi(value);
203 else if (!strcmp(name, "cache-static-ttl"))
204 ctx.cfg.cache_static_ttl = atoi(value);
205 else if (!strcmp(name, "cache-dynamic-ttl"))
206 ctx.cfg.cache_dynamic_ttl = atoi(value);
207 else if (!strcmp(name, "case-sensitive-sort"))
208 ctx.cfg.case_sensitive_sort = atoi(value);
209 else if (!strcmp(name, "about-filter"))
210 ctx.cfg.about_filter = new_filter(value, ABOUT);
211 else if (!strcmp(name, "commit-filter"))
212 ctx.cfg.commit_filter = new_filter(value, COMMIT);
213 else if (!strcmp(name, "embedded"))
214 ctx.cfg.embedded = atoi(value);
215 else if (!strcmp(name, "max-atom-items"))
216 ctx.cfg.max_atom_items = atoi(value);
217 else if (!strcmp(name, "max-message-length"))
218 ctx.cfg.max_msg_len = atoi(value);
219 else if (!strcmp(name, "max-repodesc-length"))
220 ctx.cfg.max_repodesc_len = atoi(value);
221 else if (!strcmp(name, "max-blob-size"))
222 ctx.cfg.max_blob_size = atoi(value);
223 else if (!strcmp(name, "max-repo-count"))
224 ctx.cfg.max_repo_count = atoi(value);
225 else if (!strcmp(name, "max-commit-count"))
226 ctx.cfg.max_commit_count = atoi(value);
227 else if (!strcmp(name, "project-list"))
228 ctx.cfg.project_list = xstrdup(expand_macros(value));
229 else if (!strcmp(name, "scan-path"))
230 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
231 process_cached_repolist(expand_macros(value));
232 else if (ctx.cfg.project_list)
233 scan_projects(expand_macros(value),
234 ctx.cfg.project_list, repo_config);
235 else
236 scan_tree(expand_macros(value), repo_config);
237 else if (!strcmp(name, "scan-hidden-path"))
238 ctx.cfg.scan_hidden_path = atoi(value);
239 else if (!strcmp(name, "section-from-path"))
240 ctx.cfg.section_from_path = atoi(value);
241 else if (!strcmp(name, "repository-sort"))
242 ctx.cfg.repository_sort = xstrdup(value);
243 else if (!strcmp(name, "section-sort"))
244 ctx.cfg.section_sort = atoi(value);
245 else if (!strcmp(name, "source-filter"))
246 ctx.cfg.source_filter = new_filter(value, SOURCE);
247 else if (!strcmp(name, "summary-log"))
248 ctx.cfg.summary_log = atoi(value);
249 else if (!strcmp(name, "summary-branches"))
250 ctx.cfg.summary_branches = atoi(value);
251 else if (!strcmp(name, "summary-tags"))
252 ctx.cfg.summary_tags = atoi(value);
253 else if (!strcmp(name, "side-by-side-diffs"))
254 ctx.cfg.ssdiff = atoi(value);
255 else if (!strcmp(name, "agefile"))
256 ctx.cfg.agefile = xstrdup(value);
257 else if (!strcmp(name, "mimetype-file"))
258 ctx.cfg.mimetype_file = xstrdup(value);
259 else if (!strcmp(name, "renamelimit"))
260 ctx.cfg.renamelimit = atoi(value);
261 else if (!strcmp(name, "remove-suffix"))
262 ctx.cfg.remove_suffix = atoi(value);
263 else if (!strcmp(name, "robots"))
264 ctx.cfg.robots = xstrdup(value);
265 else if (!strcmp(name, "clone-prefix"))
266 ctx.cfg.clone_prefix = xstrdup(value);
267 else if (!strcmp(name, "clone-url"))
268 ctx.cfg.clone_url = xstrdup(value);
269 else if (!strcmp(name, "local-time"))
270 ctx.cfg.local_time = atoi(value);
271 else if (!strcmp(name, "commit-sort")) {
272 if (!strcmp(value, "date"))
273 ctx.cfg.commit_sort = 1;
274 if (!strcmp(value, "topo"))
275 ctx.cfg.commit_sort = 2;
276 } else if (!prefixcmp(name, "mimetype."))
277 add_mimetype(name + 9, value);
278 else if (!strcmp(name, "include"))
279 parse_configfile(expand_macros(value), config_cb);
280}
281
282static void querystring_cb(const char *name, const char *value)
283{
284 if (!value)
285 value = "";
286
287 if (!strcmp(name,"r")) {
288 ctx.qry.repo = xstrdup(value);
289 ctx.repo = cgit_get_repoinfo(value);
290 } else if (!strcmp(name, "p")) {
291 ctx.qry.page = xstrdup(value);
292 } else if (!strcmp(name, "url")) {
293 if (*value == '/')
294 value++;
295 ctx.qry.url = xstrdup(value);
296 cgit_parse_url(value);
297 } else if (!strcmp(name, "qt")) {
298 ctx.qry.grep = xstrdup(value);
299 } else if (!strcmp(name, "q")) {
300 ctx.qry.search = xstrdup(value);
301 } else if (!strcmp(name, "h")) {
302 ctx.qry.head = xstrdup(value);
303 ctx.qry.has_symref = 1;
304 } else if (!strcmp(name, "id")) {
305 ctx.qry.sha1 = xstrdup(value);
306 ctx.qry.has_sha1 = 1;
307 } else if (!strcmp(name, "id2")) {
308 ctx.qry.sha2 = xstrdup(value);
309 ctx.qry.has_sha1 = 1;
310 } else if (!strcmp(name, "ofs")) {
311 ctx.qry.ofs = atoi(value);
312 } else if (!strcmp(name, "path")) {
313 ctx.qry.path = trim_end(value, '/');
314 } else if (!strcmp(name, "name")) {
315 ctx.qry.name = xstrdup(value);
316 } else if (!strcmp(name, "mimetype")) {
317 ctx.qry.mimetype = xstrdup(value);
318 } else if (!strcmp(name, "s")) {
319 ctx.qry.sort = xstrdup(value);
320 } else if (!strcmp(name, "showmsg")) {
321 ctx.qry.showmsg = atoi(value);
322 } else if (!strcmp(name, "period")) {
323 ctx.qry.period = xstrdup(value);
324 } else if (!strcmp(name, "ss")) {
325 ctx.qry.ssdiff = atoi(value);
326 ctx.qry.has_ssdiff = 1;
327 } else if (!strcmp(name, "all")) {
328 ctx.qry.show_all = atoi(value);
329 } else if (!strcmp(name, "context")) {
330 ctx.qry.context = atoi(value);
331 } else if (!strcmp(name, "ignorews")) {
332 ctx.qry.ignorews = atoi(value);
333 }
334}
335
336static char *xstrdupn(const char *str)
337{
338 return (str ? xstrdup(str) : NULL);
339}
340
341static void prepare_context(struct cgit_context *ctx)
342{
343 memset(ctx, 0, sizeof(*ctx));
344 ctx->cfg.agefile = "info/web/last-modified";
345 ctx->cfg.nocache = 0;
346 ctx->cfg.cache_size = 0;
347 ctx->cfg.cache_dynamic_ttl = 5;
348 ctx->cfg.cache_max_create_time = 5;
349 ctx->cfg.cache_repo_ttl = 5;
350 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
351 ctx->cfg.cache_root_ttl = 5;
352 ctx->cfg.cache_scanrc_ttl = 15;
353 ctx->cfg.cache_static_ttl = -1;
354 ctx->cfg.case_sensitive_sort = 1;
355 ctx->cfg.css = "/cgit.css";
356 ctx->cfg.logo = "/cgit.png";
357 ctx->cfg.local_time = 0;
358 ctx->cfg.enable_http_clone = 1;
359 ctx->cfg.enable_index_owner = 1;
360 ctx->cfg.enable_tree_linenumbers = 1;
361 ctx->cfg.enable_git_config = 0;
362 ctx->cfg.max_repo_count = 50;
363 ctx->cfg.max_commit_count = 50;
364 ctx->cfg.max_lock_attempts = 5;
365 ctx->cfg.max_msg_len = 80;
366 ctx->cfg.max_repodesc_len = 80;
367 ctx->cfg.max_blob_size = 0;
368 ctx->cfg.max_stats = 0;
369 ctx->cfg.project_list = NULL;
370 ctx->cfg.renamelimit = -1;
371 ctx->cfg.remove_suffix = 0;
372 ctx->cfg.robots = "index, nofollow";
373 ctx->cfg.root_title = "Git repository browser";
374 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
375 ctx->cfg.scan_hidden_path = 0;
376 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
377 ctx->cfg.section = "";
378 ctx->cfg.repository_sort = "name";
379 ctx->cfg.section_sort = 1;
380 ctx->cfg.summary_branches = 10;
381 ctx->cfg.summary_log = 10;
382 ctx->cfg.summary_tags = 10;
383 ctx->cfg.max_atom_items = 10;
384 ctx->cfg.ssdiff = 0;
385 ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
386 ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
387 ctx->env.https = xstrdupn(getenv("HTTPS"));
388 ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
389 ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
390 ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
391 ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
392 ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
393 ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
394 ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
395 ctx->page.mimetype = "text/html";
396 ctx->page.charset = PAGE_ENCODING;
397 ctx->page.filename = NULL;
398 ctx->page.size = 0;
399 ctx->page.modified = time(NULL);
400 ctx->page.expires = ctx->page.modified;
401 ctx->page.etag = NULL;
402 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
403 if (ctx->env.script_name)
404 ctx->cfg.script_name = ctx->env.script_name;
405 if (ctx->env.query_string)
406 ctx->qry.raw = ctx->env.query_string;
407 if (!ctx->env.cgit_config)
408 ctx->env.cgit_config = CGIT_CONFIG;
409}
410
411struct refmatch {
412 char *req_ref;
413 char *first_ref;
414 int match;
415};
416
417static int find_current_ref(const char *refname, const unsigned char *sha1,
418 int flags, void *cb_data)
419{
420 struct refmatch *info;
421
422 info = (struct refmatch *)cb_data;
423 if (!strcmp(refname, info->req_ref))
424 info->match = 1;
425 if (!info->first_ref)
426 info->first_ref = xstrdup(refname);
427 return info->match;
428}
429
430static void free_refmatch_inner(struct refmatch *info)
431{
432 if (info->first_ref)
433 free(info->first_ref);
434}
435
436static char *find_default_branch(struct cgit_repo *repo)
437{
438 struct refmatch info;
439 char *ref;
440
441 info.req_ref = repo->defbranch;
442 info.first_ref = NULL;
443 info.match = 0;
444 for_each_branch_ref(find_current_ref, &info);
445 if (info.match)
446 ref = info.req_ref;
447 else
448 ref = info.first_ref;
449 if (ref)
450 ref = xstrdup(ref);
451 free_refmatch_inner(&info);
452
453 return ref;
454}
455
456static char *guess_defbranch(void)
457{
458 const char *ref;
459 unsigned char sha1[20];
460
461 ref = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
462 if (!ref || prefixcmp(ref, "refs/heads/"))
463 return "master";
464 return xstrdup(ref + 11);
465}
466
467static int prepare_repo_cmd(struct cgit_context *ctx)
468{
469 char *tmp;
470 unsigned char sha1[20];
471 int nongit = 0;
472 int rc;
473
474 setenv("GIT_DIR", ctx->repo->path, 1);
475 setup_git_directory_gently(&nongit);
476 if (nongit) {
477 rc = errno;
478 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
479 "config error");
480 tmp = fmt("Failed to open %s: %s",
481 ctx->repo->name,
482 rc ? strerror(rc) : "Not a valid git repository");
483 ctx->repo = NULL;
484 cgit_print_http_headers(ctx);
485 cgit_print_docstart(ctx);
486 cgit_print_pageheader(ctx);
487 cgit_print_error(tmp);
488 cgit_print_docend();
489 return 1;
490 }
491 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
492
493 if (!ctx->repo->defbranch)
494 ctx->repo->defbranch = guess_defbranch();
495
496 if (!ctx->qry.head) {
497 ctx->qry.nohead = 1;
498 ctx->qry.head = find_default_branch(ctx->repo);
499 }
500
501 if (!ctx->qry.head) {
502 cgit_print_http_headers(ctx);
503 cgit_print_docstart(ctx);
504 cgit_print_pageheader(ctx);
505 cgit_print_error("Repository seems to be empty");
506 cgit_print_docend();
507 return 1;
508 }
509
510 if (get_sha1(ctx->qry.head, sha1)) {
511 tmp = xstrdup(ctx->qry.head);
512 ctx->qry.head = ctx->repo->defbranch;
513 ctx->page.status = 404;
514 ctx->page.statusmsg = "Not found";
515 cgit_print_http_headers(ctx);
516 cgit_print_docstart(ctx);
517 cgit_print_pageheader(ctx);
518 cgit_print_error(fmt("Invalid branch: %s", tmp));
519 cgit_print_docend();
520 return 1;
521 }
522 sort_string_list(&ctx->repo->submodules);
523 cgit_prepare_repo_env(ctx->repo);
524 return 0;
525}
526
527static void process_request(void *cbdata)
528{
529 struct cgit_context *ctx = cbdata;
530 struct cgit_cmd *cmd;
531
532 cmd = cgit_get_cmd(ctx);
533 if (!cmd) {
534 ctx->page.title = "cgit error";
535 ctx->page.status = 404;
536 ctx->page.statusmsg = "Not found";
537 cgit_print_http_headers(ctx);
538 cgit_print_docstart(ctx);
539 cgit_print_pageheader(ctx);
540 cgit_print_error("Invalid request");
541 cgit_print_docend();
542 return;
543 }
544
545 if (!ctx->cfg.enable_http_clone && cmd->is_clone) {
546 html_status(404, "Not found", 0);
547 return;
548 }
549
550 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
551 * in-project path limit to be made available at ctx->qry.vpath.
552 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
553 */
554 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
555
556 if (cmd->want_repo && !ctx->repo) {
557 cgit_print_http_headers(ctx);
558 cgit_print_docstart(ctx);
559 cgit_print_pageheader(ctx);
560 cgit_print_error(fmt("No repository selected"));
561 cgit_print_docend();
562 return;
563 }
564
565 if (ctx->repo && prepare_repo_cmd(ctx))
566 return;
567
568 if (cmd->want_layout) {
569 cgit_print_http_headers(ctx);
570 cgit_print_docstart(ctx);
571 cgit_print_pageheader(ctx);
572 }
573
574 cmd->fn(ctx);
575
576 if (cmd->want_layout)
577 cgit_print_docend();
578}
579
580static int cmp_repos(const void *a, const void *b)
581{
582 const struct cgit_repo *ra = a, *rb = b;
583 return strcmp(ra->url, rb->url);
584}
585
586static char *build_snapshot_setting(int bitmap)
587{
588 const struct cgit_snapshot_format *f;
589 char *result = xstrdup("");
590 char *tmp;
591 int len;
592
593 for (f = cgit_snapshot_formats; f->suffix; f++) {
594 if (f->bit & bitmap) {
595 tmp = result;
596 result = xstrdup(fmt("%s%s ", tmp, f->suffix));
597 free(tmp);
598 }
599 }
600 len = strlen(result);
601 if (len)
602 result[len - 1] = '\0';
603 return result;
604}
605
606static char *get_first_line(char *txt)
607{
608 char *t = xstrdup(txt);
609 char *p = strchr(t, '\n');
610 if (p)
611 *p = '\0';
612 return t;
613}
614
615static void print_repo(FILE *f, struct cgit_repo *repo)
616{
617 fprintf(f, "repo.url=%s\n", repo->url);
618 fprintf(f, "repo.name=%s\n", repo->name);
619 fprintf(f, "repo.path=%s\n", repo->path);
620 if (repo->owner)
621 fprintf(f, "repo.owner=%s\n", repo->owner);
622 if (repo->desc) {
623 char *tmp = get_first_line(repo->desc);
624 fprintf(f, "repo.desc=%s\n", tmp);
625 free(tmp);
626 }
627 if (repo->readme)
628 fprintf(f, "repo.readme=%s\n", repo->readme);
629 if (repo->defbranch)
630 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
631 if (repo->module_link)
632 fprintf(f, "repo.module-link=%s\n", repo->module_link);
633 if (repo->section)
634 fprintf(f, "repo.section=%s\n", repo->section);
635 if (repo->clone_url)
636 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
637 fprintf(f, "repo.enable-commit-graph=%d\n",
638 repo->enable_commit_graph);
639 fprintf(f, "repo.enable-log-filecount=%d\n",
640 repo->enable_log_filecount);
641 fprintf(f, "repo.enable-log-linecount=%d\n",
642 repo->enable_log_linecount);
643 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
644 fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
645 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
646 fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
647 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
648 fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
649 if (repo->snapshots != ctx.cfg.snapshots) {
650 char *tmp = build_snapshot_setting(repo->snapshots);
651 fprintf(f, "repo.snapshots=%s\n", tmp);
652 free(tmp);
653 }
654 if (repo->max_stats != ctx.cfg.max_stats)
655 fprintf(f, "repo.max-stats=%s\n",
656 cgit_find_stats_periodname(repo->max_stats));
657 fprintf(f, "\n");
658}
659
660static void print_repolist(FILE *f, struct cgit_repolist *list, int start)
661{
662 int i;
663
664 for (i = start; i < list->count; i++)
665 print_repo(f, &list->repos[i]);
666}
667
668/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
669 * and return 0 on success.
670 */
671static int generate_cached_repolist(const char *path, const char *cached_rc)
672{
673 char *locked_rc;
674 int idx;
675 FILE *f;
676
677 locked_rc = xstrdup(fmt("%s.lock", cached_rc));
678 f = fopen(locked_rc, "wx");
679 if (!f) {
680 /* Inform about the error unless the lockfile already existed,
681 * since that only means we've got concurrent requests.
682 */
683 if (errno != EEXIST)
684 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
685 locked_rc, strerror(errno), errno);
686 return errno;
687 }
688 idx = cgit_repolist.count;
689 if (ctx.cfg.project_list)
690 scan_projects(path, ctx.cfg.project_list, repo_config);
691 else
692 scan_tree(path, repo_config);
693 print_repolist(f, &cgit_repolist, idx);
694 if (rename(locked_rc, cached_rc))
695 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
696 locked_rc, cached_rc, strerror(errno), errno);
697 fclose(f);
698 return 0;
699}
700
701static void process_cached_repolist(const char *path)
702{
703 struct stat st;
704 char *cached_rc;
705 time_t age;
706 unsigned long hash;
707
708 hash = hash_str(path);
709 if (ctx.cfg.project_list)
710 hash += hash_str(ctx.cfg.project_list);
711 cached_rc = xstrdup(fmt("%s/rc-%8lx", ctx.cfg.cache_root, hash));
712
713 if (stat(cached_rc, &st)) {
714 /* Nothing is cached, we need to scan without forking. And
715 * if we fail to generate a cached repolist, we need to
716 * invoke scan_tree manually.
717 */
718 if (generate_cached_repolist(path, cached_rc)) {
719 if (ctx.cfg.project_list)
720 scan_projects(path, ctx.cfg.project_list,
721 repo_config);
722 else
723 scan_tree(path, repo_config);
724 }
725 return;
726 }
727
728 parse_configfile(cached_rc, config_cb);
729
730 /* If the cached configfile hasn't expired, lets exit now */
731 age = time(NULL) - st.st_mtime;
732 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
733 return;
734
735 /* The cached repolist has been parsed, but it was old. So lets
736 * rescan the specified path and generate a new cached repolist
737 * in a child-process to avoid latency for the current request.
738 */
739 if (fork())
740 return;
741
742 exit(generate_cached_repolist(path, cached_rc));
743}
744
745static void cgit_parse_args(int argc, const char **argv)
746{
747 int i;
748 int scan = 0;
749
750 for (i = 1; i < argc; i++) {
751 if (!strncmp(argv[i], "--cache=", 8)) {
752 ctx.cfg.cache_root = xstrdup(argv[i] + 8);
753 }
754 if (!strcmp(argv[i], "--nocache")) {
755 ctx.cfg.nocache = 1;
756 }
757 if (!strcmp(argv[i], "--nohttp")) {
758 ctx.env.no_http = "1";
759 }
760 if (!strncmp(argv[i], "--query=", 8)) {
761 ctx.qry.raw = xstrdup(argv[i] + 8);
762 }
763 if (!strncmp(argv[i], "--repo=", 7)) {
764 ctx.qry.repo = xstrdup(argv[i] + 7);
765 }
766 if (!strncmp(argv[i], "--page=", 7)) {
767 ctx.qry.page = xstrdup(argv[i] + 7);
768 }
769 if (!strncmp(argv[i], "--head=", 7)) {
770 ctx.qry.head = xstrdup(argv[i] + 7);
771 ctx.qry.has_symref = 1;
772 }
773 if (!strncmp(argv[i], "--sha1=", 7)) {
774 ctx.qry.sha1 = xstrdup(argv[i] + 7);
775 ctx.qry.has_sha1 = 1;
776 }
777 if (!strncmp(argv[i], "--ofs=", 6)) {
778 ctx.qry.ofs = atoi(argv[i] + 6);
779 }
780 if (!strncmp(argv[i], "--scan-tree=", 12) ||
781 !strncmp(argv[i], "--scan-path=", 12)) {
782 /* HACK: the global snapshot bitmask defines the
783 * set of allowed snapshot formats, but the config
784 * file hasn't been parsed yet so the mask is
785 * currently 0. By setting all bits high before
786 * scanning we make sure that any in-repo cgitrc
787 * snapshot setting is respected by scan_tree().
788 * BTW: we assume that there'll never be more than
789 * 255 different snapshot formats supported by cgit...
790 */
791 ctx.cfg.snapshots = 0xFF;
792 scan++;
793 scan_tree(argv[i] + 12, repo_config);
794 }
795 }
796 if (scan) {
797 qsort(cgit_repolist.repos, cgit_repolist.count,
798 sizeof(struct cgit_repo), cmp_repos);
799 print_repolist(stdout, &cgit_repolist, 0);
800 exit(0);
801 }
802}
803
804static int calc_ttl()
805{
806 if (!ctx.repo)
807 return ctx.cfg.cache_root_ttl;
808
809 if (!ctx.qry.page)
810 return ctx.cfg.cache_repo_ttl;
811
812 if (ctx.qry.has_symref)
813 return ctx.cfg.cache_dynamic_ttl;
814
815 if (ctx.qry.has_sha1)
816 return ctx.cfg.cache_static_ttl;
817
818 return ctx.cfg.cache_repo_ttl;
819}
820
821int main(int argc, const char **argv)
822{
823 const char *path;
824 char *qry;
825 int err, ttl;
826
827 prepare_context(&ctx);
828 cgit_repolist.length = 0;
829 cgit_repolist.count = 0;
830 cgit_repolist.repos = NULL;
831
832 cgit_parse_args(argc, argv);
833 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
834 ctx.repo = NULL;
835 http_parse_querystring(ctx.qry.raw, querystring_cb);
836
837 /* If virtual-root isn't specified in cgitrc, lets pretend
838 * that virtual-root equals SCRIPT_NAME, minus any possibly
839 * trailing slashes.
840 */
841 if (!ctx.cfg.virtual_root && ctx.cfg.script_name) {
842 ctx.cfg.virtual_root = trim_end(ctx.cfg.script_name, '/');
843 if (!ctx.cfg.virtual_root)
844 ctx.cfg.virtual_root = "";
845 }
846
847 /* If no url parameter is specified on the querystring, lets
848 * use PATH_INFO as url. This allows cgit to work with virtual
849 * urls without the need for rewriterules in the webserver (as
850 * long as PATH_INFO is included in the cache lookup key).
851 */
852 path = ctx.env.path_info;
853 if (!ctx.qry.url && path) {
854 if (path[0] == '/')
855 path++;
856 ctx.qry.url = xstrdup(path);
857 if (ctx.qry.raw) {
858 qry = ctx.qry.raw;
859 ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
860 free(qry);
861 } else
862 ctx.qry.raw = xstrdup(ctx.qry.url);
863 cgit_parse_url(ctx.qry.url);
864 }
865
866 ttl = calc_ttl();
867 ctx.page.expires += ttl * 60;
868 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
869 ctx.cfg.nocache = 1;
870 if (ctx.cfg.nocache)
871 ctx.cfg.cache_size = 0;
872 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
873 ctx.qry.raw, ttl, process_request, &ctx);
874 if (err)
875 cgit_print_error(fmt("Error processing page: %s (%d)",
876 strerror(err), err));
877 return err;
878}