cgit.c (view raw)
1/* cgit.c: cgi for the git scm
2 *
3 * Copyright (C) 2006 Lars Hjemli
4 * Copyright (C) 2010-2013 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 "ui-blob.h"
18#include "ui-summary.h"
19#include "scan-tree.h"
20
21const char *cgit_version = CGIT_VERSION;
22
23static void add_mimetype(const char *name, const char *value)
24{
25 struct string_list_item *item;
26
27 item = string_list_insert(&ctx.cfg.mimetypes, xstrdup(name));
28 item->util = xstrdup(value);
29}
30
31static struct cgit_filter *new_filter(const char *cmd, filter_type filtertype)
32{
33 struct cgit_filter *f;
34 int args_size = 0;
35 int extra_args;
36
37 if (!cmd || !cmd[0])
38 return NULL;
39
40 switch (filtertype) {
41 case SOURCE:
42 case ABOUT:
43 extra_args = 1;
44 break;
45
46 case COMMIT:
47 default:
48 extra_args = 0;
49 break;
50 }
51
52 f = xmalloc(sizeof(struct cgit_filter));
53 f->cmd = xstrdup(cmd);
54 args_size = (2 + extra_args) * sizeof(char *);
55 f->argv = xmalloc(args_size);
56 memset(f->argv, 0, args_size);
57 f->argv[0] = f->cmd;
58 return f;
59}
60
61static void process_cached_repolist(const char *path);
62
63static void repo_config(struct cgit_repo *repo, const char *name, const char *value)
64{
65 struct string_list_item *item;
66
67 if (!strcmp(name, "name"))
68 repo->name = xstrdup(value);
69 else if (!strcmp(name, "clone-url"))
70 repo->clone_url = xstrdup(value);
71 else if (!strcmp(name, "desc"))
72 repo->desc = xstrdup(value);
73 else if (!strcmp(name, "owner"))
74 repo->owner = xstrdup(value);
75 else if (!strcmp(name, "defbranch"))
76 repo->defbranch = xstrdup(value);
77 else if (!strcmp(name, "snapshots"))
78 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
79 else if (!strcmp(name, "enable-commit-graph"))
80 repo->enable_commit_graph = atoi(value);
81 else if (!strcmp(name, "enable-log-filecount"))
82 repo->enable_log_filecount = atoi(value);
83 else if (!strcmp(name, "enable-log-linecount"))
84 repo->enable_log_linecount = atoi(value);
85 else if (!strcmp(name, "enable-remote-branches"))
86 repo->enable_remote_branches = atoi(value);
87 else if (!strcmp(name, "enable-subject-links"))
88 repo->enable_subject_links = atoi(value);
89 else if (!strcmp(name, "branch-sort")) {
90 if (!strcmp(value, "age"))
91 repo->branch_sort = 1;
92 if (!strcmp(value, "name"))
93 repo->branch_sort = 0;
94 } else if (!strcmp(name, "commit-sort")) {
95 if (!strcmp(value, "date"))
96 repo->commit_sort = 1;
97 if (!strcmp(value, "topo"))
98 repo->commit_sort = 2;
99 } else if (!strcmp(name, "max-stats"))
100 repo->max_stats = cgit_find_stats_period(value, NULL);
101 else if (!strcmp(name, "module-link"))
102 repo->module_link= xstrdup(value);
103 else if (!prefixcmp(name, "module-link.")) {
104 item = string_list_append(&repo->submodules, xstrdup(name + 12));
105 item->util = xstrdup(value);
106 } else if (!strcmp(name, "section"))
107 repo->section = xstrdup(value);
108 else if (!strcmp(name, "readme") && value != NULL) {
109 if (repo->readme.items == ctx.cfg.readme.items)
110 memset(&repo->readme, 0, sizeof(repo->readme));
111 string_list_append(&repo->readme, xstrdup(value));
112 } else if (!strcmp(name, "logo") && value != NULL)
113 repo->logo = xstrdup(value);
114 else if (!strcmp(name, "logo-link") && value != NULL)
115 repo->logo_link = xstrdup(value);
116 else if (ctx.cfg.enable_filter_overrides) {
117 if (!strcmp(name, "about-filter"))
118 repo->about_filter = new_filter(value, ABOUT);
119 else if (!strcmp(name, "commit-filter"))
120 repo->commit_filter = new_filter(value, COMMIT);
121 else if (!strcmp(name, "source-filter"))
122 repo->source_filter = new_filter(value, SOURCE);
123 }
124}
125
126static void config_cb(const char *name, const char *value)
127{
128 if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
129 ctx.cfg.section = xstrdup(value);
130 else if (!strcmp(name, "repo.url"))
131 ctx.repo = cgit_add_repo(value);
132 else if (ctx.repo && !strcmp(name, "repo.path"))
133 ctx.repo->path = trim_end(value, '/');
134 else if (ctx.repo && !prefixcmp(name, "repo."))
135 repo_config(ctx.repo, name + 5, value);
136 else if (!strcmp(name, "readme") && value != NULL)
137 string_list_append(&ctx.cfg.readme, xstrdup(value));
138 else if (!strcmp(name, "root-title"))
139 ctx.cfg.root_title = xstrdup(value);
140 else if (!strcmp(name, "root-desc"))
141 ctx.cfg.root_desc = xstrdup(value);
142 else if (!strcmp(name, "root-readme"))
143 ctx.cfg.root_readme = xstrdup(value);
144 else if (!strcmp(name, "css"))
145 ctx.cfg.css = xstrdup(value);
146 else if (!strcmp(name, "favicon"))
147 ctx.cfg.favicon = xstrdup(value);
148 else if (!strcmp(name, "footer"))
149 ctx.cfg.footer = xstrdup(value);
150 else if (!strcmp(name, "head-include"))
151 ctx.cfg.head_include = xstrdup(value);
152 else if (!strcmp(name, "header"))
153 ctx.cfg.header = xstrdup(value);
154 else if (!strcmp(name, "logo"))
155 ctx.cfg.logo = xstrdup(value);
156 else if (!strcmp(name, "index-header"))
157 ctx.cfg.index_header = xstrdup(value);
158 else if (!strcmp(name, "index-info"))
159 ctx.cfg.index_info = xstrdup(value);
160 else if (!strcmp(name, "logo-link"))
161 ctx.cfg.logo_link = xstrdup(value);
162 else if (!strcmp(name, "module-link"))
163 ctx.cfg.module_link = xstrdup(value);
164 else if (!strcmp(name, "strict-export"))
165 ctx.cfg.strict_export = xstrdup(value);
166 else if (!strcmp(name, "virtual-root")) {
167 ctx.cfg.virtual_root = ensure_end(value, '/');
168 } else if (!strcmp(name, "nocache"))
169 ctx.cfg.nocache = atoi(value);
170 else if (!strcmp(name, "noplainemail"))
171 ctx.cfg.noplainemail = atoi(value);
172 else if (!strcmp(name, "noheader"))
173 ctx.cfg.noheader = atoi(value);
174 else if (!strcmp(name, "snapshots"))
175 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
176 else if (!strcmp(name, "enable-filter-overrides"))
177 ctx.cfg.enable_filter_overrides = atoi(value);
178 else if (!strcmp(name, "enable-http-clone"))
179 ctx.cfg.enable_http_clone = atoi(value);
180 else if (!strcmp(name, "enable-index-links"))
181 ctx.cfg.enable_index_links = atoi(value);
182 else if (!strcmp(name, "enable-index-owner"))
183 ctx.cfg.enable_index_owner = atoi(value);
184 else if (!strcmp(name, "enable-commit-graph"))
185 ctx.cfg.enable_commit_graph = atoi(value);
186 else if (!strcmp(name, "enable-log-filecount"))
187 ctx.cfg.enable_log_filecount = atoi(value);
188 else if (!strcmp(name, "enable-log-linecount"))
189 ctx.cfg.enable_log_linecount = atoi(value);
190 else if (!strcmp(name, "enable-remote-branches"))
191 ctx.cfg.enable_remote_branches = atoi(value);
192 else if (!strcmp(name, "enable-subject-links"))
193 ctx.cfg.enable_subject_links = atoi(value);
194 else if (!strcmp(name, "enable-tree-linenumbers"))
195 ctx.cfg.enable_tree_linenumbers = atoi(value);
196 else if (!strcmp(name, "enable-git-config"))
197 ctx.cfg.enable_git_config = atoi(value);
198 else if (!strcmp(name, "max-stats"))
199 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
200 else if (!strcmp(name, "cache-size"))
201 ctx.cfg.cache_size = atoi(value);
202 else if (!strcmp(name, "cache-root"))
203 ctx.cfg.cache_root = xstrdup(expand_macros(value));
204 else if (!strcmp(name, "cache-root-ttl"))
205 ctx.cfg.cache_root_ttl = atoi(value);
206 else if (!strcmp(name, "cache-repo-ttl"))
207 ctx.cfg.cache_repo_ttl = atoi(value);
208 else if (!strcmp(name, "cache-scanrc-ttl"))
209 ctx.cfg.cache_scanrc_ttl = atoi(value);
210 else if (!strcmp(name, "cache-static-ttl"))
211 ctx.cfg.cache_static_ttl = atoi(value);
212 else if (!strcmp(name, "cache-dynamic-ttl"))
213 ctx.cfg.cache_dynamic_ttl = atoi(value);
214 else if (!strcmp(name, "cache-about-ttl"))
215 ctx.cfg.cache_about_ttl = atoi(value);
216 else if (!strcmp(name, "case-sensitive-sort"))
217 ctx.cfg.case_sensitive_sort = atoi(value);
218 else if (!strcmp(name, "about-filter"))
219 ctx.cfg.about_filter = new_filter(value, ABOUT);
220 else if (!strcmp(name, "commit-filter"))
221 ctx.cfg.commit_filter = new_filter(value, COMMIT);
222 else if (!strcmp(name, "embedded"))
223 ctx.cfg.embedded = atoi(value);
224 else if (!strcmp(name, "max-atom-items"))
225 ctx.cfg.max_atom_items = atoi(value);
226 else if (!strcmp(name, "max-message-length"))
227 ctx.cfg.max_msg_len = atoi(value);
228 else if (!strcmp(name, "max-repodesc-length"))
229 ctx.cfg.max_repodesc_len = atoi(value);
230 else if (!strcmp(name, "max-blob-size"))
231 ctx.cfg.max_blob_size = atoi(value);
232 else if (!strcmp(name, "max-repo-count"))
233 ctx.cfg.max_repo_count = atoi(value);
234 else if (!strcmp(name, "max-commit-count"))
235 ctx.cfg.max_commit_count = atoi(value);
236 else if (!strcmp(name, "project-list"))
237 ctx.cfg.project_list = xstrdup(expand_macros(value));
238 else if (!strcmp(name, "scan-path"))
239 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
240 process_cached_repolist(expand_macros(value));
241 else if (ctx.cfg.project_list)
242 scan_projects(expand_macros(value),
243 ctx.cfg.project_list, repo_config);
244 else
245 scan_tree(expand_macros(value), repo_config);
246 else if (!strcmp(name, "scan-hidden-path"))
247 ctx.cfg.scan_hidden_path = atoi(value);
248 else if (!strcmp(name, "section-from-path"))
249 ctx.cfg.section_from_path = atoi(value);
250 else if (!strcmp(name, "repository-sort"))
251 ctx.cfg.repository_sort = xstrdup(value);
252 else if (!strcmp(name, "section-sort"))
253 ctx.cfg.section_sort = atoi(value);
254 else if (!strcmp(name, "source-filter"))
255 ctx.cfg.source_filter = new_filter(value, SOURCE);
256 else if (!strcmp(name, "summary-log"))
257 ctx.cfg.summary_log = atoi(value);
258 else if (!strcmp(name, "summary-branches"))
259 ctx.cfg.summary_branches = atoi(value);
260 else if (!strcmp(name, "summary-tags"))
261 ctx.cfg.summary_tags = atoi(value);
262 else if (!strcmp(name, "side-by-side-diffs"))
263 ctx.cfg.ssdiff = atoi(value);
264 else if (!strcmp(name, "agefile"))
265 ctx.cfg.agefile = xstrdup(value);
266 else if (!strcmp(name, "mimetype-file"))
267 ctx.cfg.mimetype_file = xstrdup(value);
268 else if (!strcmp(name, "renamelimit"))
269 ctx.cfg.renamelimit = atoi(value);
270 else if (!strcmp(name, "remove-suffix"))
271 ctx.cfg.remove_suffix = atoi(value);
272 else if (!strcmp(name, "robots"))
273 ctx.cfg.robots = xstrdup(value);
274 else if (!strcmp(name, "clone-prefix"))
275 ctx.cfg.clone_prefix = xstrdup(value);
276 else if (!strcmp(name, "clone-url"))
277 ctx.cfg.clone_url = xstrdup(value);
278 else if (!strcmp(name, "local-time"))
279 ctx.cfg.local_time = atoi(value);
280 else if (!strcmp(name, "commit-sort")) {
281 if (!strcmp(value, "date"))
282 ctx.cfg.commit_sort = 1;
283 if (!strcmp(value, "topo"))
284 ctx.cfg.commit_sort = 2;
285 } else if (!strcmp(name, "branch-sort")) {
286 if (!strcmp(value, "age"))
287 ctx.cfg.branch_sort = 1;
288 if (!strcmp(value, "name"))
289 ctx.cfg.branch_sort = 0;
290 } else if (!prefixcmp(name, "mimetype."))
291 add_mimetype(name + 9, value);
292 else if (!strcmp(name, "include"))
293 parse_configfile(expand_macros(value), config_cb);
294}
295
296static void querystring_cb(const char *name, const char *value)
297{
298 if (!value)
299 value = "";
300
301 if (!strcmp(name,"r")) {
302 ctx.qry.repo = xstrdup(value);
303 ctx.repo = cgit_get_repoinfo(value);
304 } else if (!strcmp(name, "p")) {
305 ctx.qry.page = xstrdup(value);
306 } else if (!strcmp(name, "url")) {
307 if (*value == '/')
308 value++;
309 ctx.qry.url = xstrdup(value);
310 cgit_parse_url(value);
311 } else if (!strcmp(name, "qt")) {
312 ctx.qry.grep = xstrdup(value);
313 } else if (!strcmp(name, "q")) {
314 ctx.qry.search = xstrdup(value);
315 } else if (!strcmp(name, "h")) {
316 ctx.qry.head = xstrdup(value);
317 ctx.qry.has_symref = 1;
318 } else if (!strcmp(name, "id")) {
319 ctx.qry.sha1 = xstrdup(value);
320 ctx.qry.has_sha1 = 1;
321 } else if (!strcmp(name, "id2")) {
322 ctx.qry.sha2 = xstrdup(value);
323 ctx.qry.has_sha1 = 1;
324 } else if (!strcmp(name, "ofs")) {
325 ctx.qry.ofs = atoi(value);
326 } else if (!strcmp(name, "path")) {
327 ctx.qry.path = trim_end(value, '/');
328 } else if (!strcmp(name, "name")) {
329 ctx.qry.name = xstrdup(value);
330 } else if (!strcmp(name, "mimetype")) {
331 ctx.qry.mimetype = xstrdup(value);
332 } else if (!strcmp(name, "s")) {
333 ctx.qry.sort = xstrdup(value);
334 } else if (!strcmp(name, "showmsg")) {
335 ctx.qry.showmsg = atoi(value);
336 } else if (!strcmp(name, "period")) {
337 ctx.qry.period = xstrdup(value);
338 } else if (!strcmp(name, "ss")) {
339 ctx.qry.ssdiff = atoi(value);
340 ctx.qry.has_ssdiff = 1;
341 } else if (!strcmp(name, "all")) {
342 ctx.qry.show_all = atoi(value);
343 } else if (!strcmp(name, "context")) {
344 ctx.qry.context = atoi(value);
345 } else if (!strcmp(name, "ignorews")) {
346 ctx.qry.ignorews = atoi(value);
347 }
348}
349
350static void prepare_context(struct cgit_context *ctx)
351{
352 memset(ctx, 0, sizeof(*ctx));
353 ctx->cfg.agefile = "info/web/last-modified";
354 ctx->cfg.nocache = 0;
355 ctx->cfg.cache_size = 0;
356 ctx->cfg.cache_max_create_time = 5;
357 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
358 ctx->cfg.cache_about_ttl = 15;
359 ctx->cfg.cache_repo_ttl = 5;
360 ctx->cfg.cache_root_ttl = 5;
361 ctx->cfg.cache_scanrc_ttl = 15;
362 ctx->cfg.cache_dynamic_ttl = 5;
363 ctx->cfg.cache_static_ttl = -1;
364 ctx->cfg.case_sensitive_sort = 1;
365 ctx->cfg.branch_sort = 0;
366 ctx->cfg.commit_sort = 0;
367 ctx->cfg.css = "/cgit.css";
368 ctx->cfg.logo = "/cgit.png";
369 ctx->cfg.favicon = "/favicon.ico";
370 ctx->cfg.local_time = 0;
371 ctx->cfg.enable_http_clone = 1;
372 ctx->cfg.enable_index_owner = 1;
373 ctx->cfg.enable_tree_linenumbers = 1;
374 ctx->cfg.enable_git_config = 0;
375 ctx->cfg.max_repo_count = 50;
376 ctx->cfg.max_commit_count = 50;
377 ctx->cfg.max_lock_attempts = 5;
378 ctx->cfg.max_msg_len = 80;
379 ctx->cfg.max_repodesc_len = 80;
380 ctx->cfg.max_blob_size = 0;
381 ctx->cfg.max_stats = 0;
382 ctx->cfg.project_list = NULL;
383 ctx->cfg.renamelimit = -1;
384 ctx->cfg.remove_suffix = 0;
385 ctx->cfg.robots = "index, nofollow";
386 ctx->cfg.root_title = "Git repository browser";
387 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
388 ctx->cfg.scan_hidden_path = 0;
389 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
390 ctx->cfg.section = "";
391 ctx->cfg.repository_sort = "name";
392 ctx->cfg.section_sort = 1;
393 ctx->cfg.summary_branches = 10;
394 ctx->cfg.summary_log = 10;
395 ctx->cfg.summary_tags = 10;
396 ctx->cfg.max_atom_items = 10;
397 ctx->cfg.ssdiff = 0;
398 ctx->env.cgit_config = getenv("CGIT_CONFIG");
399 ctx->env.http_host = getenv("HTTP_HOST");
400 ctx->env.https = getenv("HTTPS");
401 ctx->env.no_http = getenv("NO_HTTP");
402 ctx->env.path_info = getenv("PATH_INFO");
403 ctx->env.query_string = getenv("QUERY_STRING");
404 ctx->env.request_method = getenv("REQUEST_METHOD");
405 ctx->env.script_name = getenv("SCRIPT_NAME");
406 ctx->env.server_name = getenv("SERVER_NAME");
407 ctx->env.server_port = getenv("SERVER_PORT");
408 ctx->page.mimetype = "text/html";
409 ctx->page.charset = PAGE_ENCODING;
410 ctx->page.filename = NULL;
411 ctx->page.size = 0;
412 ctx->page.modified = time(NULL);
413 ctx->page.expires = ctx->page.modified;
414 ctx->page.etag = NULL;
415 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
416 if (ctx->env.script_name)
417 ctx->cfg.script_name = xstrdup(ctx->env.script_name);
418 if (ctx->env.query_string)
419 ctx->qry.raw = xstrdup(ctx->env.query_string);
420 if (!ctx->env.cgit_config)
421 ctx->env.cgit_config = CGIT_CONFIG;
422}
423
424struct refmatch {
425 char *req_ref;
426 char *first_ref;
427 int match;
428};
429
430static int find_current_ref(const char *refname, const unsigned char *sha1,
431 int flags, void *cb_data)
432{
433 struct refmatch *info;
434
435 info = (struct refmatch *)cb_data;
436 if (!strcmp(refname, info->req_ref))
437 info->match = 1;
438 if (!info->first_ref)
439 info->first_ref = xstrdup(refname);
440 return info->match;
441}
442
443static void free_refmatch_inner(struct refmatch *info)
444{
445 if (info->first_ref)
446 free(info->first_ref);
447}
448
449static char *find_default_branch(struct cgit_repo *repo)
450{
451 struct refmatch info;
452 char *ref;
453
454 info.req_ref = repo->defbranch;
455 info.first_ref = NULL;
456 info.match = 0;
457 for_each_branch_ref(find_current_ref, &info);
458 if (info.match)
459 ref = info.req_ref;
460 else
461 ref = info.first_ref;
462 if (ref)
463 ref = xstrdup(ref);
464 free_refmatch_inner(&info);
465
466 return ref;
467}
468
469static char *guess_defbranch(void)
470{
471 const char *ref;
472 unsigned char sha1[20];
473
474 ref = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
475 if (!ref || prefixcmp(ref, "refs/heads/"))
476 return "master";
477 return xstrdup(ref + 11);
478}
479/* The caller must free filename and ref after calling this. */
480static inline void parse_readme(const char *readme, char **filename, char **ref, struct cgit_repo *repo)
481{
482 const char *colon;
483
484 *filename = NULL;
485 *ref = NULL;
486
487 if (!readme || !readme[0])
488 return;
489
490 /* Check if the readme is tracked in the git repo. */
491 colon = strchr(readme, ':');
492 if (colon && strlen(colon) > 1) {
493 /* If it starts with a colon, we want to use
494 * the default branch */
495 if (colon == readme && repo->defbranch)
496 *ref = xstrdup(repo->defbranch);
497 else
498 *ref = xstrndup(readme, colon - readme);
499 readme = colon + 1;
500 }
501
502 /* Prepend repo path to relative readme path unless tracked. */
503 if (!(*ref) && readme[0] != '/')
504 *filename = fmtalloc("%s/%s", repo->path, readme);
505 else
506 *filename = xstrdup(readme);
507}
508static void choose_readme(struct cgit_repo *repo)
509{
510 int found;
511 char *filename, *ref;
512 struct string_list_item *entry;
513
514 if (!repo->readme.nr)
515 return;
516
517 found = 0;
518 for_each_string_list_item(entry, &repo->readme) {
519 parse_readme(entry->string, &filename, &ref, repo);
520 if (!filename) {
521 free(filename);
522 free(ref);
523 continue;
524 }
525 /* If there's only one item, we skip the possibly expensive
526 * selection process. */
527 if (repo->readme.nr == 1) {
528 found = 1;
529 break;
530 }
531 if (ref) {
532 if (cgit_ref_path_exists(filename, ref, 1)) {
533 found = 1;
534 break;
535 }
536 }
537 else if (!access(filename, R_OK)) {
538 found = 1;
539 break;
540 }
541 free(filename);
542 free(ref);
543 }
544 repo->readme.strdup_strings = 1;
545 string_list_clear(&repo->readme, 0);
546 repo->readme.strdup_strings = 0;
547 if (found)
548 string_list_append(&repo->readme, filename)->util = ref;
549}
550
551static int prepare_repo_cmd(struct cgit_context *ctx)
552{
553 unsigned char sha1[20];
554 int nongit = 0;
555 int rc;
556
557 /* The path to the git repository. */
558 setenv("GIT_DIR", ctx->repo->path, 1);
559
560 /* Do not look in /etc/ for gitconfig and gitattributes. */
561 setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
562 setenv("GIT_ATTR_NOSYSTEM", "1", 1);
563 unsetenv("HOME");
564 unsetenv("XDG_CONFIG_HOME");
565
566 /* Setup the git directory and initialize the notes system. Both of these
567 * load local configuration from the git repository, so we do them both while
568 * the HOME variables are unset. */
569 setup_git_directory_gently(&nongit);
570 init_display_notes(NULL);
571
572 if (nongit) {
573 const char *name = ctx->repo->name;
574 rc = errno;
575 ctx->page.title = fmtalloc("%s - %s", ctx->cfg.root_title,
576 "config error");
577 ctx->repo = NULL;
578 cgit_print_http_headers(ctx);
579 cgit_print_docstart(ctx);
580 cgit_print_pageheader(ctx);
581 cgit_print_error("Failed to open %s: %s", name,
582 rc ? strerror(rc) : "Not a valid git repository");
583 cgit_print_docend();
584 return 1;
585 }
586 ctx->page.title = fmtalloc("%s - %s", ctx->repo->name, ctx->repo->desc);
587
588 if (!ctx->repo->defbranch)
589 ctx->repo->defbranch = guess_defbranch();
590
591 if (!ctx->qry.head) {
592 ctx->qry.nohead = 1;
593 ctx->qry.head = find_default_branch(ctx->repo);
594 }
595
596 if (!ctx->qry.head) {
597 cgit_print_http_headers(ctx);
598 cgit_print_docstart(ctx);
599 cgit_print_pageheader(ctx);
600 cgit_print_error("Repository seems to be empty");
601 cgit_print_docend();
602 return 1;
603 }
604
605 if (get_sha1(ctx->qry.head, sha1)) {
606 char *tmp = xstrdup(ctx->qry.head);
607 ctx->qry.head = ctx->repo->defbranch;
608 ctx->page.status = 404;
609 ctx->page.statusmsg = "Not found";
610 cgit_print_http_headers(ctx);
611 cgit_print_docstart(ctx);
612 cgit_print_pageheader(ctx);
613 cgit_print_error("Invalid branch: %s", tmp);
614 cgit_print_docend();
615 return 1;
616 }
617 sort_string_list(&ctx->repo->submodules);
618 cgit_prepare_repo_env(ctx->repo);
619 choose_readme(ctx->repo);
620 return 0;
621}
622
623static void process_request(void *cbdata)
624{
625 struct cgit_context *ctx = cbdata;
626 struct cgit_cmd *cmd;
627
628 cmd = cgit_get_cmd(ctx);
629 if (!cmd) {
630 ctx->page.title = "cgit error";
631 ctx->page.status = 404;
632 ctx->page.statusmsg = "Not found";
633 cgit_print_http_headers(ctx);
634 cgit_print_docstart(ctx);
635 cgit_print_pageheader(ctx);
636 cgit_print_error("Invalid request");
637 cgit_print_docend();
638 return;
639 }
640
641 if (!ctx->cfg.enable_http_clone && cmd->is_clone) {
642 html_status(404, "Not found", 0);
643 return;
644 }
645
646 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
647 * in-project path limit to be made available at ctx->qry.vpath.
648 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
649 */
650 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
651
652 if (cmd->want_repo && !ctx->repo) {
653 cgit_print_http_headers(ctx);
654 cgit_print_docstart(ctx);
655 cgit_print_pageheader(ctx);
656 cgit_print_error("No repository selected");
657 cgit_print_docend();
658 return;
659 }
660
661 if (ctx->repo && prepare_repo_cmd(ctx))
662 return;
663
664 if (cmd->want_layout) {
665 cgit_print_http_headers(ctx);
666 cgit_print_docstart(ctx);
667 cgit_print_pageheader(ctx);
668 }
669
670 cmd->fn(ctx);
671
672 if (cmd->want_layout)
673 cgit_print_docend();
674}
675
676static int cmp_repos(const void *a, const void *b)
677{
678 const struct cgit_repo *ra = a, *rb = b;
679 return strcmp(ra->url, rb->url);
680}
681
682static char *build_snapshot_setting(int bitmap)
683{
684 const struct cgit_snapshot_format *f;
685 struct strbuf result = STRBUF_INIT;
686
687 for (f = cgit_snapshot_formats; f->suffix; f++) {
688 if (f->bit & bitmap) {
689 if (result.len)
690 strbuf_addch(&result, ' ');
691 strbuf_addstr(&result, f->suffix);
692 }
693 }
694 return strbuf_detach(&result, NULL);
695}
696
697static char *get_first_line(char *txt)
698{
699 char *t = xstrdup(txt);
700 char *p = strchr(t, '\n');
701 if (p)
702 *p = '\0';
703 return t;
704}
705
706static void print_repo(FILE *f, struct cgit_repo *repo)
707{
708 struct string_list_item *item;
709 fprintf(f, "repo.url=%s\n", repo->url);
710 fprintf(f, "repo.name=%s\n", repo->name);
711 fprintf(f, "repo.path=%s\n", repo->path);
712 if (repo->owner)
713 fprintf(f, "repo.owner=%s\n", repo->owner);
714 if (repo->desc) {
715 char *tmp = get_first_line(repo->desc);
716 fprintf(f, "repo.desc=%s\n", tmp);
717 free(tmp);
718 }
719 for_each_string_list_item(item, &repo->readme) {
720 if (item->util)
721 fprintf(f, "repo.readme=%s:%s\n", (char *)item->util, item->string);
722 else
723 fprintf(f, "repo.readme=%s\n", item->string);
724 }
725 if (repo->defbranch)
726 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
727 if (repo->module_link)
728 fprintf(f, "repo.module-link=%s\n", repo->module_link);
729 if (repo->section)
730 fprintf(f, "repo.section=%s\n", repo->section);
731 if (repo->clone_url)
732 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
733 fprintf(f, "repo.enable-commit-graph=%d\n",
734 repo->enable_commit_graph);
735 fprintf(f, "repo.enable-log-filecount=%d\n",
736 repo->enable_log_filecount);
737 fprintf(f, "repo.enable-log-linecount=%d\n",
738 repo->enable_log_linecount);
739 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
740 fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
741 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
742 fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
743 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
744 fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
745 if (repo->snapshots != ctx.cfg.snapshots) {
746 char *tmp = build_snapshot_setting(repo->snapshots);
747 fprintf(f, "repo.snapshots=%s\n", tmp ? tmp : "");
748 free(tmp);
749 }
750 if (repo->max_stats != ctx.cfg.max_stats)
751 fprintf(f, "repo.max-stats=%s\n",
752 cgit_find_stats_periodname(repo->max_stats));
753 if (repo->logo)
754 fprintf(f, "repo.logo=%s\n", repo->logo);
755 if (repo->logo_link)
756 fprintf(f, "repo.logo-link=%s\n", repo->logo_link);
757 fprintf(f, "repo.enable-remote-branches=%d\n", repo->enable_remote_branches);
758 fprintf(f, "repo.enable-subject-links=%d\n", repo->enable_subject_links);
759 if (repo->branch_sort == 1)
760 fprintf(f, "repo.branch-sort=age\n");
761 if (repo->commit_sort) {
762 if (repo->commit_sort == 1)
763 fprintf(f, "repo.commit-sort=date\n");
764 else if (repo->commit_sort == 2)
765 fprintf(f, "repo.commit-sort=topo\n");
766 }
767 fprintf(f, "\n");
768}
769
770static void print_repolist(FILE *f, struct cgit_repolist *list, int start)
771{
772 int i;
773
774 for (i = start; i < list->count; i++)
775 print_repo(f, &list->repos[i]);
776}
777
778/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
779 * and return 0 on success.
780 */
781static int generate_cached_repolist(const char *path, const char *cached_rc)
782{
783 struct strbuf locked_rc = STRBUF_INIT;
784 int result = 0;
785 int idx;
786 FILE *f;
787
788 strbuf_addf(&locked_rc, "%s.lock", cached_rc);
789 f = fopen(locked_rc.buf, "wx");
790 if (!f) {
791 /* Inform about the error unless the lockfile already existed,
792 * since that only means we've got concurrent requests.
793 */
794 result = errno;
795 if (result != EEXIST)
796 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
797 locked_rc.buf, strerror(result), result);
798 goto out;
799 }
800 idx = cgit_repolist.count;
801 if (ctx.cfg.project_list)
802 scan_projects(path, ctx.cfg.project_list, repo_config);
803 else
804 scan_tree(path, repo_config);
805 print_repolist(f, &cgit_repolist, idx);
806 if (rename(locked_rc.buf, cached_rc))
807 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
808 locked_rc.buf, cached_rc, strerror(errno), errno);
809 fclose(f);
810out:
811 strbuf_release(&locked_rc);
812 return result;
813}
814
815static void process_cached_repolist(const char *path)
816{
817 struct stat st;
818 struct strbuf cached_rc = STRBUF_INIT;
819 time_t age;
820 unsigned long hash;
821
822 hash = hash_str(path);
823 if (ctx.cfg.project_list)
824 hash += hash_str(ctx.cfg.project_list);
825 strbuf_addf(&cached_rc, "%s/rc-%8lx", ctx.cfg.cache_root, hash);
826
827 if (stat(cached_rc.buf, &st)) {
828 /* Nothing is cached, we need to scan without forking. And
829 * if we fail to generate a cached repolist, we need to
830 * invoke scan_tree manually.
831 */
832 if (generate_cached_repolist(path, cached_rc.buf)) {
833 if (ctx.cfg.project_list)
834 scan_projects(path, ctx.cfg.project_list,
835 repo_config);
836 else
837 scan_tree(path, repo_config);
838 }
839 goto out;
840 }
841
842 parse_configfile(cached_rc.buf, config_cb);
843
844 /* If the cached configfile hasn't expired, lets exit now */
845 age = time(NULL) - st.st_mtime;
846 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
847 goto out;
848
849 /* The cached repolist has been parsed, but it was old. So lets
850 * rescan the specified path and generate a new cached repolist
851 * in a child-process to avoid latency for the current request.
852 */
853 if (fork())
854 goto out;
855
856 exit(generate_cached_repolist(path, cached_rc.buf));
857out:
858 strbuf_release(&cached_rc);
859}
860
861static void cgit_parse_args(int argc, const char **argv)
862{
863 int i;
864 int scan = 0;
865
866 for (i = 1; i < argc; i++) {
867 if (!strncmp(argv[i], "--cache=", 8)) {
868 ctx.cfg.cache_root = xstrdup(argv[i] + 8);
869 }
870 if (!strcmp(argv[i], "--nocache")) {
871 ctx.cfg.nocache = 1;
872 }
873 if (!strcmp(argv[i], "--nohttp")) {
874 ctx.env.no_http = "1";
875 }
876 if (!strncmp(argv[i], "--query=", 8)) {
877 ctx.qry.raw = xstrdup(argv[i] + 8);
878 }
879 if (!strncmp(argv[i], "--repo=", 7)) {
880 ctx.qry.repo = xstrdup(argv[i] + 7);
881 }
882 if (!strncmp(argv[i], "--page=", 7)) {
883 ctx.qry.page = xstrdup(argv[i] + 7);
884 }
885 if (!strncmp(argv[i], "--head=", 7)) {
886 ctx.qry.head = xstrdup(argv[i] + 7);
887 ctx.qry.has_symref = 1;
888 }
889 if (!strncmp(argv[i], "--sha1=", 7)) {
890 ctx.qry.sha1 = xstrdup(argv[i] + 7);
891 ctx.qry.has_sha1 = 1;
892 }
893 if (!strncmp(argv[i], "--ofs=", 6)) {
894 ctx.qry.ofs = atoi(argv[i] + 6);
895 }
896 if (!strncmp(argv[i], "--scan-tree=", 12) ||
897 !strncmp(argv[i], "--scan-path=", 12)) {
898 /* HACK: the global snapshot bitmask defines the
899 * set of allowed snapshot formats, but the config
900 * file hasn't been parsed yet so the mask is
901 * currently 0. By setting all bits high before
902 * scanning we make sure that any in-repo cgitrc
903 * snapshot setting is respected by scan_tree().
904 * BTW: we assume that there'll never be more than
905 * 255 different snapshot formats supported by cgit...
906 */
907 ctx.cfg.snapshots = 0xFF;
908 scan++;
909 scan_tree(argv[i] + 12, repo_config);
910 }
911 }
912 if (scan) {
913 qsort(cgit_repolist.repos, cgit_repolist.count,
914 sizeof(struct cgit_repo), cmp_repos);
915 print_repolist(stdout, &cgit_repolist, 0);
916 exit(0);
917 }
918}
919
920static int calc_ttl()
921{
922 if (!ctx.repo)
923 return ctx.cfg.cache_root_ttl;
924
925 if (!ctx.qry.page)
926 return ctx.cfg.cache_repo_ttl;
927
928 if (!strcmp(ctx.qry.page, "about"))
929 return ctx.cfg.cache_about_ttl;
930
931 if (ctx.qry.has_sha1)
932 return ctx.cfg.cache_static_ttl;
933
934 if (ctx.qry.has_symref)
935 return ctx.cfg.cache_dynamic_ttl;
936
937 return ctx.cfg.cache_repo_ttl;
938}
939
940int main(int argc, const char **argv)
941{
942 const char *path;
943 int err, ttl;
944
945 prepare_context(&ctx);
946 cgit_repolist.length = 0;
947 cgit_repolist.count = 0;
948 cgit_repolist.repos = NULL;
949
950 cgit_parse_args(argc, argv);
951 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
952 ctx.repo = NULL;
953 http_parse_querystring(ctx.qry.raw, querystring_cb);
954
955 /* If virtual-root isn't specified in cgitrc, lets pretend
956 * that virtual-root equals SCRIPT_NAME, minus any possibly
957 * trailing slashes.
958 */
959 if (!ctx.cfg.virtual_root && ctx.cfg.script_name)
960 ctx.cfg.virtual_root = ensure_end(ctx.cfg.script_name, '/');
961
962 /* If no url parameter is specified on the querystring, lets
963 * use PATH_INFO as url. This allows cgit to work with virtual
964 * urls without the need for rewriterules in the webserver (as
965 * long as PATH_INFO is included in the cache lookup key).
966 */
967 path = ctx.env.path_info;
968 if (!ctx.qry.url && path) {
969 if (path[0] == '/')
970 path++;
971 ctx.qry.url = xstrdup(path);
972 if (ctx.qry.raw) {
973 char *newqry = fmtalloc("%s?%s", path, ctx.qry.raw);
974 free(ctx.qry.raw);
975 ctx.qry.raw = newqry;
976 } else
977 ctx.qry.raw = xstrdup(ctx.qry.url);
978 cgit_parse_url(ctx.qry.url);
979 }
980
981 ttl = calc_ttl();
982 if (ttl < 0)
983 ctx.page.expires += 10 * 365 * 24 * 60 * 60; /* 10 years */
984 else
985 ctx.page.expires += ttl * 60;
986 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
987 ctx.cfg.nocache = 1;
988 if (ctx.cfg.nocache)
989 ctx.cfg.cache_size = 0;
990 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
991 ctx.qry.raw, ttl, process_request, &ctx);
992 if (err)
993 cgit_print_error("Error processing page: %s (%d)",
994 strerror(err), err);
995 return err;
996}