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 void prepare_context(struct cgit_context *ctx)
337{
338 memset(ctx, 0, sizeof(*ctx));
339 ctx->cfg.agefile = "info/web/last-modified";
340 ctx->cfg.nocache = 0;
341 ctx->cfg.cache_size = 0;
342 ctx->cfg.cache_dynamic_ttl = 5;
343 ctx->cfg.cache_max_create_time = 5;
344 ctx->cfg.cache_repo_ttl = 5;
345 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
346 ctx->cfg.cache_root_ttl = 5;
347 ctx->cfg.cache_scanrc_ttl = 15;
348 ctx->cfg.cache_static_ttl = -1;
349 ctx->cfg.case_sensitive_sort = 1;
350 ctx->cfg.css = "/cgit.css";
351 ctx->cfg.logo = "/cgit.png";
352 ctx->cfg.local_time = 0;
353 ctx->cfg.enable_http_clone = 1;
354 ctx->cfg.enable_index_owner = 1;
355 ctx->cfg.enable_tree_linenumbers = 1;
356 ctx->cfg.enable_git_config = 0;
357 ctx->cfg.max_repo_count = 50;
358 ctx->cfg.max_commit_count = 50;
359 ctx->cfg.max_lock_attempts = 5;
360 ctx->cfg.max_msg_len = 80;
361 ctx->cfg.max_repodesc_len = 80;
362 ctx->cfg.max_blob_size = 0;
363 ctx->cfg.max_stats = 0;
364 ctx->cfg.project_list = NULL;
365 ctx->cfg.renamelimit = -1;
366 ctx->cfg.remove_suffix = 0;
367 ctx->cfg.robots = "index, nofollow";
368 ctx->cfg.root_title = "Git repository browser";
369 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
370 ctx->cfg.scan_hidden_path = 0;
371 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
372 ctx->cfg.section = "";
373 ctx->cfg.repository_sort = "name";
374 ctx->cfg.section_sort = 1;
375 ctx->cfg.summary_branches = 10;
376 ctx->cfg.summary_log = 10;
377 ctx->cfg.summary_tags = 10;
378 ctx->cfg.max_atom_items = 10;
379 ctx->cfg.ssdiff = 0;
380 ctx->env.cgit_config = getenv("CGIT_CONFIG");
381 ctx->env.http_host = getenv("HTTP_HOST");
382 ctx->env.https = getenv("HTTPS");
383 ctx->env.no_http = getenv("NO_HTTP");
384 ctx->env.path_info = getenv("PATH_INFO");
385 ctx->env.query_string = getenv("QUERY_STRING");
386 ctx->env.request_method = getenv("REQUEST_METHOD");
387 ctx->env.script_name = getenv("SCRIPT_NAME");
388 ctx->env.server_name = getenv("SERVER_NAME");
389 ctx->env.server_port = getenv("SERVER_PORT");
390 ctx->page.mimetype = "text/html";
391 ctx->page.charset = PAGE_ENCODING;
392 ctx->page.filename = NULL;
393 ctx->page.size = 0;
394 ctx->page.modified = time(NULL);
395 ctx->page.expires = ctx->page.modified;
396 ctx->page.etag = NULL;
397 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
398 if (ctx->env.script_name)
399 ctx->cfg.script_name = xstrdup(ctx->env.script_name);
400 if (ctx->env.query_string)
401 ctx->qry.raw = xstrdup(ctx->env.query_string);
402 if (!ctx->env.cgit_config)
403 ctx->env.cgit_config = CGIT_CONFIG;
404}
405
406struct refmatch {
407 char *req_ref;
408 char *first_ref;
409 int match;
410};
411
412static int find_current_ref(const char *refname, const unsigned char *sha1,
413 int flags, void *cb_data)
414{
415 struct refmatch *info;
416
417 info = (struct refmatch *)cb_data;
418 if (!strcmp(refname, info->req_ref))
419 info->match = 1;
420 if (!info->first_ref)
421 info->first_ref = xstrdup(refname);
422 return info->match;
423}
424
425static void free_refmatch_inner(struct refmatch *info)
426{
427 if (info->first_ref)
428 free(info->first_ref);
429}
430
431static char *find_default_branch(struct cgit_repo *repo)
432{
433 struct refmatch info;
434 char *ref;
435
436 info.req_ref = repo->defbranch;
437 info.first_ref = NULL;
438 info.match = 0;
439 for_each_branch_ref(find_current_ref, &info);
440 if (info.match)
441 ref = info.req_ref;
442 else
443 ref = info.first_ref;
444 if (ref)
445 ref = xstrdup(ref);
446 free_refmatch_inner(&info);
447
448 return ref;
449}
450
451static char *guess_defbranch(void)
452{
453 const char *ref;
454 unsigned char sha1[20];
455
456 ref = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
457 if (!ref || prefixcmp(ref, "refs/heads/"))
458 return "master";
459 return xstrdup(ref + 11);
460}
461
462static int prepare_repo_cmd(struct cgit_context *ctx)
463{
464 char *tmp;
465 unsigned char sha1[20];
466 int nongit = 0;
467 int rc;
468
469 setenv("GIT_DIR", ctx->repo->path, 1);
470 setup_git_directory_gently(&nongit);
471 if (nongit) {
472 rc = errno;
473 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
474 "config error");
475 tmp = fmt("Failed to open %s: %s",
476 ctx->repo->name,
477 rc ? strerror(rc) : "Not a valid git repository");
478 ctx->repo = NULL;
479 cgit_print_http_headers(ctx);
480 cgit_print_docstart(ctx);
481 cgit_print_pageheader(ctx);
482 cgit_print_error(tmp);
483 cgit_print_docend();
484 return 1;
485 }
486 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
487
488 if (!ctx->repo->defbranch)
489 ctx->repo->defbranch = guess_defbranch();
490
491 if (!ctx->qry.head) {
492 ctx->qry.nohead = 1;
493 ctx->qry.head = find_default_branch(ctx->repo);
494 }
495
496 if (!ctx->qry.head) {
497 cgit_print_http_headers(ctx);
498 cgit_print_docstart(ctx);
499 cgit_print_pageheader(ctx);
500 cgit_print_error("Repository seems to be empty");
501 cgit_print_docend();
502 return 1;
503 }
504
505 if (get_sha1(ctx->qry.head, sha1)) {
506 tmp = xstrdup(ctx->qry.head);
507 ctx->qry.head = ctx->repo->defbranch;
508 ctx->page.status = 404;
509 ctx->page.statusmsg = "Not found";
510 cgit_print_http_headers(ctx);
511 cgit_print_docstart(ctx);
512 cgit_print_pageheader(ctx);
513 cgit_print_error(fmt("Invalid branch: %s", tmp));
514 cgit_print_docend();
515 return 1;
516 }
517 sort_string_list(&ctx->repo->submodules);
518 cgit_prepare_repo_env(ctx->repo);
519 return 0;
520}
521
522static void process_request(void *cbdata)
523{
524 struct cgit_context *ctx = cbdata;
525 struct cgit_cmd *cmd;
526
527 cmd = cgit_get_cmd(ctx);
528 if (!cmd) {
529 ctx->page.title = "cgit error";
530 ctx->page.status = 404;
531 ctx->page.statusmsg = "Not found";
532 cgit_print_http_headers(ctx);
533 cgit_print_docstart(ctx);
534 cgit_print_pageheader(ctx);
535 cgit_print_error("Invalid request");
536 cgit_print_docend();
537 return;
538 }
539
540 if (!ctx->cfg.enable_http_clone && cmd->is_clone) {
541 html_status(404, "Not found", 0);
542 return;
543 }
544
545 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
546 * in-project path limit to be made available at ctx->qry.vpath.
547 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
548 */
549 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
550
551 if (cmd->want_repo && !ctx->repo) {
552 cgit_print_http_headers(ctx);
553 cgit_print_docstart(ctx);
554 cgit_print_pageheader(ctx);
555 cgit_print_error(fmt("No repository selected"));
556 cgit_print_docend();
557 return;
558 }
559
560 if (ctx->repo && prepare_repo_cmd(ctx))
561 return;
562
563 if (cmd->want_layout) {
564 cgit_print_http_headers(ctx);
565 cgit_print_docstart(ctx);
566 cgit_print_pageheader(ctx);
567 }
568
569 cmd->fn(ctx);
570
571 if (cmd->want_layout)
572 cgit_print_docend();
573}
574
575static int cmp_repos(const void *a, const void *b)
576{
577 const struct cgit_repo *ra = a, *rb = b;
578 return strcmp(ra->url, rb->url);
579}
580
581static char *build_snapshot_setting(int bitmap)
582{
583 const struct cgit_snapshot_format *f;
584 char *result = xstrdup("");
585 char *tmp;
586 int len;
587
588 for (f = cgit_snapshot_formats; f->suffix; f++) {
589 if (f->bit & bitmap) {
590 tmp = result;
591 result = xstrdup(fmt("%s%s ", tmp, f->suffix));
592 free(tmp);
593 }
594 }
595 len = strlen(result);
596 if (len)
597 result[len - 1] = '\0';
598 return result;
599}
600
601static char *get_first_line(char *txt)
602{
603 char *t = xstrdup(txt);
604 char *p = strchr(t, '\n');
605 if (p)
606 *p = '\0';
607 return t;
608}
609
610static void print_repo(FILE *f, struct cgit_repo *repo)
611{
612 fprintf(f, "repo.url=%s\n", repo->url);
613 fprintf(f, "repo.name=%s\n", repo->name);
614 fprintf(f, "repo.path=%s\n", repo->path);
615 if (repo->owner)
616 fprintf(f, "repo.owner=%s\n", repo->owner);
617 if (repo->desc) {
618 char *tmp = get_first_line(repo->desc);
619 fprintf(f, "repo.desc=%s\n", tmp);
620 free(tmp);
621 }
622 if (repo->readme)
623 fprintf(f, "repo.readme=%s\n", repo->readme);
624 if (repo->defbranch)
625 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
626 if (repo->module_link)
627 fprintf(f, "repo.module-link=%s\n", repo->module_link);
628 if (repo->section)
629 fprintf(f, "repo.section=%s\n", repo->section);
630 if (repo->clone_url)
631 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
632 fprintf(f, "repo.enable-commit-graph=%d\n",
633 repo->enable_commit_graph);
634 fprintf(f, "repo.enable-log-filecount=%d\n",
635 repo->enable_log_filecount);
636 fprintf(f, "repo.enable-log-linecount=%d\n",
637 repo->enable_log_linecount);
638 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
639 fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
640 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
641 fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
642 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
643 fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
644 if (repo->snapshots != ctx.cfg.snapshots) {
645 char *tmp = build_snapshot_setting(repo->snapshots);
646 fprintf(f, "repo.snapshots=%s\n", tmp);
647 free(tmp);
648 }
649 if (repo->max_stats != ctx.cfg.max_stats)
650 fprintf(f, "repo.max-stats=%s\n",
651 cgit_find_stats_periodname(repo->max_stats));
652 fprintf(f, "\n");
653}
654
655static void print_repolist(FILE *f, struct cgit_repolist *list, int start)
656{
657 int i;
658
659 for (i = start; i < list->count; i++)
660 print_repo(f, &list->repos[i]);
661}
662
663/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
664 * and return 0 on success.
665 */
666static int generate_cached_repolist(const char *path, const char *cached_rc)
667{
668 char *locked_rc;
669 int idx;
670 FILE *f;
671
672 locked_rc = xstrdup(fmt("%s.lock", cached_rc));
673 f = fopen(locked_rc, "wx");
674 if (!f) {
675 /* Inform about the error unless the lockfile already existed,
676 * since that only means we've got concurrent requests.
677 */
678 if (errno != EEXIST)
679 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
680 locked_rc, strerror(errno), errno);
681 return errno;
682 }
683 idx = cgit_repolist.count;
684 if (ctx.cfg.project_list)
685 scan_projects(path, ctx.cfg.project_list, repo_config);
686 else
687 scan_tree(path, repo_config);
688 print_repolist(f, &cgit_repolist, idx);
689 if (rename(locked_rc, cached_rc))
690 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
691 locked_rc, cached_rc, strerror(errno), errno);
692 fclose(f);
693 return 0;
694}
695
696static void process_cached_repolist(const char *path)
697{
698 struct stat st;
699 char *cached_rc;
700 time_t age;
701 unsigned long hash;
702
703 hash = hash_str(path);
704 if (ctx.cfg.project_list)
705 hash += hash_str(ctx.cfg.project_list);
706 cached_rc = xstrdup(fmt("%s/rc-%8lx", ctx.cfg.cache_root, hash));
707
708 if (stat(cached_rc, &st)) {
709 /* Nothing is cached, we need to scan without forking. And
710 * if we fail to generate a cached repolist, we need to
711 * invoke scan_tree manually.
712 */
713 if (generate_cached_repolist(path, cached_rc)) {
714 if (ctx.cfg.project_list)
715 scan_projects(path, ctx.cfg.project_list,
716 repo_config);
717 else
718 scan_tree(path, repo_config);
719 }
720 return;
721 }
722
723 parse_configfile(cached_rc, config_cb);
724
725 /* If the cached configfile hasn't expired, lets exit now */
726 age = time(NULL) - st.st_mtime;
727 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
728 return;
729
730 /* The cached repolist has been parsed, but it was old. So lets
731 * rescan the specified path and generate a new cached repolist
732 * in a child-process to avoid latency for the current request.
733 */
734 if (fork())
735 return;
736
737 exit(generate_cached_repolist(path, cached_rc));
738}
739
740static void cgit_parse_args(int argc, const char **argv)
741{
742 int i;
743 int scan = 0;
744
745 for (i = 1; i < argc; i++) {
746 if (!strncmp(argv[i], "--cache=", 8)) {
747 ctx.cfg.cache_root = xstrdup(argv[i] + 8);
748 }
749 if (!strcmp(argv[i], "--nocache")) {
750 ctx.cfg.nocache = 1;
751 }
752 if (!strcmp(argv[i], "--nohttp")) {
753 ctx.env.no_http = "1";
754 }
755 if (!strncmp(argv[i], "--query=", 8)) {
756 ctx.qry.raw = xstrdup(argv[i] + 8);
757 }
758 if (!strncmp(argv[i], "--repo=", 7)) {
759 ctx.qry.repo = xstrdup(argv[i] + 7);
760 }
761 if (!strncmp(argv[i], "--page=", 7)) {
762 ctx.qry.page = xstrdup(argv[i] + 7);
763 }
764 if (!strncmp(argv[i], "--head=", 7)) {
765 ctx.qry.head = xstrdup(argv[i] + 7);
766 ctx.qry.has_symref = 1;
767 }
768 if (!strncmp(argv[i], "--sha1=", 7)) {
769 ctx.qry.sha1 = xstrdup(argv[i] + 7);
770 ctx.qry.has_sha1 = 1;
771 }
772 if (!strncmp(argv[i], "--ofs=", 6)) {
773 ctx.qry.ofs = atoi(argv[i] + 6);
774 }
775 if (!strncmp(argv[i], "--scan-tree=", 12) ||
776 !strncmp(argv[i], "--scan-path=", 12)) {
777 /* HACK: the global snapshot bitmask defines the
778 * set of allowed snapshot formats, but the config
779 * file hasn't been parsed yet so the mask is
780 * currently 0. By setting all bits high before
781 * scanning we make sure that any in-repo cgitrc
782 * snapshot setting is respected by scan_tree().
783 * BTW: we assume that there'll never be more than
784 * 255 different snapshot formats supported by cgit...
785 */
786 ctx.cfg.snapshots = 0xFF;
787 scan++;
788 scan_tree(argv[i] + 12, repo_config);
789 }
790 }
791 if (scan) {
792 qsort(cgit_repolist.repos, cgit_repolist.count,
793 sizeof(struct cgit_repo), cmp_repos);
794 print_repolist(stdout, &cgit_repolist, 0);
795 exit(0);
796 }
797}
798
799static int calc_ttl()
800{
801 if (!ctx.repo)
802 return ctx.cfg.cache_root_ttl;
803
804 if (!ctx.qry.page)
805 return ctx.cfg.cache_repo_ttl;
806
807 if (ctx.qry.has_symref)
808 return ctx.cfg.cache_dynamic_ttl;
809
810 if (ctx.qry.has_sha1)
811 return ctx.cfg.cache_static_ttl;
812
813 return ctx.cfg.cache_repo_ttl;
814}
815
816int main(int argc, const char **argv)
817{
818 const char *path;
819 char *qry;
820 int err, ttl;
821
822 prepare_context(&ctx);
823 cgit_repolist.length = 0;
824 cgit_repolist.count = 0;
825 cgit_repolist.repos = NULL;
826
827 cgit_parse_args(argc, argv);
828 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
829 ctx.repo = NULL;
830 http_parse_querystring(ctx.qry.raw, querystring_cb);
831
832 /* If virtual-root isn't specified in cgitrc, lets pretend
833 * that virtual-root equals SCRIPT_NAME, minus any possibly
834 * trailing slashes.
835 */
836 if (!ctx.cfg.virtual_root && ctx.cfg.script_name) {
837 ctx.cfg.virtual_root = trim_end(ctx.cfg.script_name, '/');
838 if (!ctx.cfg.virtual_root)
839 ctx.cfg.virtual_root = "";
840 }
841
842 /* If no url parameter is specified on the querystring, lets
843 * use PATH_INFO as url. This allows cgit to work with virtual
844 * urls without the need for rewriterules in the webserver (as
845 * long as PATH_INFO is included in the cache lookup key).
846 */
847 path = ctx.env.path_info;
848 if (!ctx.qry.url && path) {
849 if (path[0] == '/')
850 path++;
851 ctx.qry.url = xstrdup(path);
852 if (ctx.qry.raw) {
853 qry = ctx.qry.raw;
854 ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
855 free(qry);
856 } else
857 ctx.qry.raw = xstrdup(ctx.qry.url);
858 cgit_parse_url(ctx.qry.url);
859 }
860
861 ttl = calc_ttl();
862 ctx.page.expires += ttl * 60;
863 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
864 ctx.cfg.nocache = 1;
865 if (ctx.cfg.nocache)
866 ctx.cfg.cache_size = 0;
867 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
868 ctx.qry.raw, ttl, process_request, &ctx);
869 if (err)
870 cgit_print_error(fmt("Error processing page: %s (%d)",
871 strerror(err), err));
872 return err;
873}