cgit.c (view raw)
1/* cgit.c: cgi for the git scm
2 *
3 * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
4 *
5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text)
7 */
8
9#include "cgit.h"
10#include "cache.h"
11#include "cmd.h"
12#include "configfile.h"
13#include "html.h"
14#include "ui-shared.h"
15#include "ui-stats.h"
16#include "ui-blob.h"
17#include "ui-summary.h"
18#include "scan-tree.h"
19
20const char *cgit_version = CGIT_VERSION;
21
22static void add_mimetype(const char *name, const char *value)
23{
24 struct string_list_item *item;
25
26 item = string_list_insert(&ctx.cfg.mimetypes, xstrdup(name));
27 item->util = xstrdup(value);
28}
29
30static void process_cached_repolist(const char *path);
31
32static void repo_config(struct cgit_repo *repo, const char *name, const char *value)
33{
34 struct string_list_item *item;
35
36 if (!strcmp(name, "name"))
37 repo->name = xstrdup(value);
38 else if (!strcmp(name, "clone-url"))
39 repo->clone_url = xstrdup(value);
40 else if (!strcmp(name, "desc"))
41 repo->desc = xstrdup(value);
42 else if (!strcmp(name, "owner"))
43 repo->owner = xstrdup(value);
44 else if (!strcmp(name, "defbranch"))
45 repo->defbranch = xstrdup(value);
46 else if (!strcmp(name, "snapshots"))
47 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
48 else if (!strcmp(name, "enable-commit-graph"))
49 repo->enable_commit_graph = atoi(value);
50 else if (!strcmp(name, "enable-log-filecount"))
51 repo->enable_log_filecount = atoi(value);
52 else if (!strcmp(name, "enable-log-linecount"))
53 repo->enable_log_linecount = atoi(value);
54 else if (!strcmp(name, "enable-remote-branches"))
55 repo->enable_remote_branches = atoi(value);
56 else if (!strcmp(name, "enable-subject-links"))
57 repo->enable_subject_links = atoi(value);
58 else if (!strcmp(name, "branch-sort")) {
59 if (!strcmp(value, "age"))
60 repo->branch_sort = 1;
61 if (!strcmp(value, "name"))
62 repo->branch_sort = 0;
63 } else if (!strcmp(name, "commit-sort")) {
64 if (!strcmp(value, "date"))
65 repo->commit_sort = 1;
66 if (!strcmp(value, "topo"))
67 repo->commit_sort = 2;
68 } else if (!strcmp(name, "max-stats"))
69 repo->max_stats = cgit_find_stats_period(value, NULL);
70 else if (!strcmp(name, "module-link"))
71 repo->module_link= xstrdup(value);
72 else if (!prefixcmp(name, "module-link.")) {
73 item = string_list_append(&repo->submodules, xstrdup(name + 12));
74 item->util = xstrdup(value);
75 } else if (!strcmp(name, "section"))
76 repo->section = xstrdup(value);
77 else if (!strcmp(name, "readme") && value != NULL) {
78 if (repo->readme.items == ctx.cfg.readme.items)
79 memset(&repo->readme, 0, sizeof(repo->readme));
80 string_list_append(&repo->readme, xstrdup(value));
81 } else if (!strcmp(name, "logo") && value != NULL)
82 repo->logo = xstrdup(value);
83 else if (!strcmp(name, "logo-link") && value != NULL)
84 repo->logo_link = xstrdup(value);
85 else if (ctx.cfg.enable_filter_overrides) {
86 if (!strcmp(name, "about-filter"))
87 repo->about_filter = cgit_new_filter(value, ABOUT);
88 else if (!strcmp(name, "commit-filter"))
89 repo->commit_filter = cgit_new_filter(value, COMMIT);
90 else if (!strcmp(name, "source-filter"))
91 repo->source_filter = cgit_new_filter(value, SOURCE);
92 else if (!strcmp(name, "email-filter"))
93 repo->email_filter = cgit_new_filter(value, EMAIL);
94 }
95}
96
97static void config_cb(const char *name, const char *value)
98{
99 if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
100 ctx.cfg.section = xstrdup(value);
101 else if (!strcmp(name, "repo.url"))
102 ctx.repo = cgit_add_repo(value);
103 else if (ctx.repo && !strcmp(name, "repo.path"))
104 ctx.repo->path = trim_end(value, '/');
105 else if (ctx.repo && !prefixcmp(name, "repo."))
106 repo_config(ctx.repo, name + 5, value);
107 else if (!strcmp(name, "readme") && value != NULL)
108 string_list_append(&ctx.cfg.readme, xstrdup(value));
109 else if (!strcmp(name, "root-title"))
110 ctx.cfg.root_title = xstrdup(value);
111 else if (!strcmp(name, "root-desc"))
112 ctx.cfg.root_desc = xstrdup(value);
113 else if (!strcmp(name, "root-readme"))
114 ctx.cfg.root_readme = xstrdup(value);
115 else if (!strcmp(name, "css"))
116 ctx.cfg.css = xstrdup(value);
117 else if (!strcmp(name, "favicon"))
118 ctx.cfg.favicon = xstrdup(value);
119 else if (!strcmp(name, "footer"))
120 ctx.cfg.footer = xstrdup(value);
121 else if (!strcmp(name, "head-include"))
122 ctx.cfg.head_include = xstrdup(value);
123 else if (!strcmp(name, "header"))
124 ctx.cfg.header = xstrdup(value);
125 else if (!strcmp(name, "logo"))
126 ctx.cfg.logo = xstrdup(value);
127 else if (!strcmp(name, "index-header"))
128 ctx.cfg.index_header = xstrdup(value);
129 else if (!strcmp(name, "index-info"))
130 ctx.cfg.index_info = xstrdup(value);
131 else if (!strcmp(name, "logo-link"))
132 ctx.cfg.logo_link = xstrdup(value);
133 else if (!strcmp(name, "module-link"))
134 ctx.cfg.module_link = xstrdup(value);
135 else if (!strcmp(name, "strict-export"))
136 ctx.cfg.strict_export = xstrdup(value);
137 else if (!strcmp(name, "virtual-root")) {
138 ctx.cfg.virtual_root = ensure_end(value, '/');
139 } else if (!strcmp(name, "nocache"))
140 ctx.cfg.nocache = atoi(value);
141 else if (!strcmp(name, "noplainemail"))
142 ctx.cfg.noplainemail = atoi(value);
143 else if (!strcmp(name, "noheader"))
144 ctx.cfg.noheader = atoi(value);
145 else if (!strcmp(name, "snapshots"))
146 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
147 else if (!strcmp(name, "enable-filter-overrides"))
148 ctx.cfg.enable_filter_overrides = atoi(value);
149 else if (!strcmp(name, "enable-http-clone"))
150 ctx.cfg.enable_http_clone = atoi(value);
151 else if (!strcmp(name, "enable-index-links"))
152 ctx.cfg.enable_index_links = atoi(value);
153 else if (!strcmp(name, "enable-index-owner"))
154 ctx.cfg.enable_index_owner = atoi(value);
155 else if (!strcmp(name, "enable-commit-graph"))
156 ctx.cfg.enable_commit_graph = atoi(value);
157 else if (!strcmp(name, "enable-log-filecount"))
158 ctx.cfg.enable_log_filecount = atoi(value);
159 else if (!strcmp(name, "enable-log-linecount"))
160 ctx.cfg.enable_log_linecount = atoi(value);
161 else if (!strcmp(name, "enable-remote-branches"))
162 ctx.cfg.enable_remote_branches = atoi(value);
163 else if (!strcmp(name, "enable-subject-links"))
164 ctx.cfg.enable_subject_links = atoi(value);
165 else if (!strcmp(name, "enable-tree-linenumbers"))
166 ctx.cfg.enable_tree_linenumbers = atoi(value);
167 else if (!strcmp(name, "enable-git-config"))
168 ctx.cfg.enable_git_config = atoi(value);
169 else if (!strcmp(name, "max-stats"))
170 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
171 else if (!strcmp(name, "cache-size"))
172 ctx.cfg.cache_size = atoi(value);
173 else if (!strcmp(name, "cache-root"))
174 ctx.cfg.cache_root = xstrdup(expand_macros(value));
175 else if (!strcmp(name, "cache-root-ttl"))
176 ctx.cfg.cache_root_ttl = atoi(value);
177 else if (!strcmp(name, "cache-repo-ttl"))
178 ctx.cfg.cache_repo_ttl = atoi(value);
179 else if (!strcmp(name, "cache-scanrc-ttl"))
180 ctx.cfg.cache_scanrc_ttl = atoi(value);
181 else if (!strcmp(name, "cache-static-ttl"))
182 ctx.cfg.cache_static_ttl = atoi(value);
183 else if (!strcmp(name, "cache-dynamic-ttl"))
184 ctx.cfg.cache_dynamic_ttl = atoi(value);
185 else if (!strcmp(name, "cache-about-ttl"))
186 ctx.cfg.cache_about_ttl = atoi(value);
187 else if (!strcmp(name, "case-sensitive-sort"))
188 ctx.cfg.case_sensitive_sort = atoi(value);
189 else if (!strcmp(name, "about-filter"))
190 ctx.cfg.about_filter = cgit_new_filter(value, ABOUT);
191 else if (!strcmp(name, "commit-filter"))
192 ctx.cfg.commit_filter = cgit_new_filter(value, COMMIT);
193 else if (!strcmp(name, "email-filter"))
194 ctx.cfg.email_filter = cgit_new_filter(value, EMAIL);
195 else if (!strcmp(name, "embedded"))
196 ctx.cfg.embedded = atoi(value);
197 else if (!strcmp(name, "max-atom-items"))
198 ctx.cfg.max_atom_items = atoi(value);
199 else if (!strcmp(name, "max-message-length"))
200 ctx.cfg.max_msg_len = atoi(value);
201 else if (!strcmp(name, "max-repodesc-length"))
202 ctx.cfg.max_repodesc_len = atoi(value);
203 else if (!strcmp(name, "max-blob-size"))
204 ctx.cfg.max_blob_size = atoi(value);
205 else if (!strcmp(name, "max-repo-count"))
206 ctx.cfg.max_repo_count = atoi(value);
207 else if (!strcmp(name, "max-commit-count"))
208 ctx.cfg.max_commit_count = atoi(value);
209 else if (!strcmp(name, "project-list"))
210 ctx.cfg.project_list = xstrdup(expand_macros(value));
211 else if (!strcmp(name, "scan-path"))
212 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
213 process_cached_repolist(expand_macros(value));
214 else if (ctx.cfg.project_list)
215 scan_projects(expand_macros(value),
216 ctx.cfg.project_list, repo_config);
217 else
218 scan_tree(expand_macros(value), repo_config);
219 else if (!strcmp(name, "scan-hidden-path"))
220 ctx.cfg.scan_hidden_path = atoi(value);
221 else if (!strcmp(name, "section-from-path"))
222 ctx.cfg.section_from_path = atoi(value);
223 else if (!strcmp(name, "repository-sort"))
224 ctx.cfg.repository_sort = xstrdup(value);
225 else if (!strcmp(name, "section-sort"))
226 ctx.cfg.section_sort = atoi(value);
227 else if (!strcmp(name, "source-filter"))
228 ctx.cfg.source_filter = cgit_new_filter(value, SOURCE);
229 else if (!strcmp(name, "summary-log"))
230 ctx.cfg.summary_log = atoi(value);
231 else if (!strcmp(name, "summary-branches"))
232 ctx.cfg.summary_branches = atoi(value);
233 else if (!strcmp(name, "summary-tags"))
234 ctx.cfg.summary_tags = atoi(value);
235 else if (!strcmp(name, "side-by-side-diffs"))
236 ctx.cfg.ssdiff = atoi(value);
237 else if (!strcmp(name, "agefile"))
238 ctx.cfg.agefile = xstrdup(value);
239 else if (!strcmp(name, "mimetype-file"))
240 ctx.cfg.mimetype_file = xstrdup(value);
241 else if (!strcmp(name, "renamelimit"))
242 ctx.cfg.renamelimit = atoi(value);
243 else if (!strcmp(name, "remove-suffix"))
244 ctx.cfg.remove_suffix = atoi(value);
245 else if (!strcmp(name, "robots"))
246 ctx.cfg.robots = xstrdup(value);
247 else if (!strcmp(name, "clone-prefix"))
248 ctx.cfg.clone_prefix = xstrdup(value);
249 else if (!strcmp(name, "clone-url"))
250 ctx.cfg.clone_url = xstrdup(value);
251 else if (!strcmp(name, "local-time"))
252 ctx.cfg.local_time = atoi(value);
253 else if (!strcmp(name, "commit-sort")) {
254 if (!strcmp(value, "date"))
255 ctx.cfg.commit_sort = 1;
256 if (!strcmp(value, "topo"))
257 ctx.cfg.commit_sort = 2;
258 } else if (!strcmp(name, "branch-sort")) {
259 if (!strcmp(value, "age"))
260 ctx.cfg.branch_sort = 1;
261 if (!strcmp(value, "name"))
262 ctx.cfg.branch_sort = 0;
263 } else if (!prefixcmp(name, "mimetype."))
264 add_mimetype(name + 9, value);
265 else if (!strcmp(name, "include"))
266 parse_configfile(expand_macros(value), config_cb);
267}
268
269static void querystring_cb(const char *name, const char *value)
270{
271 if (!value)
272 value = "";
273
274 if (!strcmp(name,"r")) {
275 ctx.qry.repo = xstrdup(value);
276 ctx.repo = cgit_get_repoinfo(value);
277 } else if (!strcmp(name, "p")) {
278 ctx.qry.page = xstrdup(value);
279 } else if (!strcmp(name, "url")) {
280 if (*value == '/')
281 value++;
282 ctx.qry.url = xstrdup(value);
283 cgit_parse_url(value);
284 } else if (!strcmp(name, "qt")) {
285 ctx.qry.grep = xstrdup(value);
286 } else if (!strcmp(name, "q")) {
287 ctx.qry.search = xstrdup(value);
288 } else if (!strcmp(name, "h")) {
289 ctx.qry.head = xstrdup(value);
290 ctx.qry.has_symref = 1;
291 } else if (!strcmp(name, "id")) {
292 ctx.qry.sha1 = xstrdup(value);
293 ctx.qry.has_sha1 = 1;
294 } else if (!strcmp(name, "id2")) {
295 ctx.qry.sha2 = xstrdup(value);
296 ctx.qry.has_sha1 = 1;
297 } else if (!strcmp(name, "ofs")) {
298 ctx.qry.ofs = atoi(value);
299 } else if (!strcmp(name, "path")) {
300 ctx.qry.path = trim_end(value, '/');
301 } else if (!strcmp(name, "name")) {
302 ctx.qry.name = xstrdup(value);
303 } else if (!strcmp(name, "mimetype")) {
304 ctx.qry.mimetype = xstrdup(value);
305 } else if (!strcmp(name, "s")) {
306 ctx.qry.sort = xstrdup(value);
307 } else if (!strcmp(name, "showmsg")) {
308 ctx.qry.showmsg = atoi(value);
309 } else if (!strcmp(name, "period")) {
310 ctx.qry.period = xstrdup(value);
311 } else if (!strcmp(name, "ss")) {
312 ctx.qry.ssdiff = atoi(value);
313 ctx.qry.has_ssdiff = 1;
314 } else if (!strcmp(name, "all")) {
315 ctx.qry.show_all = atoi(value);
316 } else if (!strcmp(name, "context")) {
317 ctx.qry.context = atoi(value);
318 } else if (!strcmp(name, "ignorews")) {
319 ctx.qry.ignorews = atoi(value);
320 }
321}
322
323static void prepare_context(struct cgit_context *ctx)
324{
325 memset(ctx, 0, sizeof(*ctx));
326 ctx->cfg.agefile = "info/web/last-modified";
327 ctx->cfg.nocache = 0;
328 ctx->cfg.cache_size = 0;
329 ctx->cfg.cache_max_create_time = 5;
330 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
331 ctx->cfg.cache_about_ttl = 15;
332 ctx->cfg.cache_repo_ttl = 5;
333 ctx->cfg.cache_root_ttl = 5;
334 ctx->cfg.cache_scanrc_ttl = 15;
335 ctx->cfg.cache_dynamic_ttl = 5;
336 ctx->cfg.cache_static_ttl = -1;
337 ctx->cfg.case_sensitive_sort = 1;
338 ctx->cfg.branch_sort = 0;
339 ctx->cfg.commit_sort = 0;
340 ctx->cfg.css = "/cgit.css";
341 ctx->cfg.logo = "/cgit.png";
342 ctx->cfg.favicon = "/favicon.ico";
343 ctx->cfg.local_time = 0;
344 ctx->cfg.enable_http_clone = 1;
345 ctx->cfg.enable_index_owner = 1;
346 ctx->cfg.enable_tree_linenumbers = 1;
347 ctx->cfg.enable_git_config = 0;
348 ctx->cfg.max_repo_count = 50;
349 ctx->cfg.max_commit_count = 50;
350 ctx->cfg.max_lock_attempts = 5;
351 ctx->cfg.max_msg_len = 80;
352 ctx->cfg.max_repodesc_len = 80;
353 ctx->cfg.max_blob_size = 0;
354 ctx->cfg.max_stats = 0;
355 ctx->cfg.project_list = NULL;
356 ctx->cfg.renamelimit = -1;
357 ctx->cfg.remove_suffix = 0;
358 ctx->cfg.robots = "index, nofollow";
359 ctx->cfg.root_title = "Git repository browser";
360 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
361 ctx->cfg.scan_hidden_path = 0;
362 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
363 ctx->cfg.section = "";
364 ctx->cfg.repository_sort = "name";
365 ctx->cfg.section_sort = 1;
366 ctx->cfg.summary_branches = 10;
367 ctx->cfg.summary_log = 10;
368 ctx->cfg.summary_tags = 10;
369 ctx->cfg.max_atom_items = 10;
370 ctx->cfg.ssdiff = 0;
371 ctx->env.cgit_config = getenv("CGIT_CONFIG");
372 ctx->env.http_host = getenv("HTTP_HOST");
373 ctx->env.https = getenv("HTTPS");
374 ctx->env.no_http = getenv("NO_HTTP");
375 ctx->env.path_info = getenv("PATH_INFO");
376 ctx->env.query_string = getenv("QUERY_STRING");
377 ctx->env.request_method = getenv("REQUEST_METHOD");
378 ctx->env.script_name = getenv("SCRIPT_NAME");
379 ctx->env.server_name = getenv("SERVER_NAME");
380 ctx->env.server_port = getenv("SERVER_PORT");
381 ctx->page.mimetype = "text/html";
382 ctx->page.charset = PAGE_ENCODING;
383 ctx->page.filename = NULL;
384 ctx->page.size = 0;
385 ctx->page.modified = time(NULL);
386 ctx->page.expires = ctx->page.modified;
387 ctx->page.etag = NULL;
388 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
389 if (ctx->env.script_name)
390 ctx->cfg.script_name = xstrdup(ctx->env.script_name);
391 if (ctx->env.query_string)
392 ctx->qry.raw = xstrdup(ctx->env.query_string);
393 if (!ctx->env.cgit_config)
394 ctx->env.cgit_config = CGIT_CONFIG;
395}
396
397struct refmatch {
398 char *req_ref;
399 char *first_ref;
400 int match;
401};
402
403static int find_current_ref(const char *refname, const unsigned char *sha1,
404 int flags, void *cb_data)
405{
406 struct refmatch *info;
407
408 info = (struct refmatch *)cb_data;
409 if (!strcmp(refname, info->req_ref))
410 info->match = 1;
411 if (!info->first_ref)
412 info->first_ref = xstrdup(refname);
413 return info->match;
414}
415
416static void free_refmatch_inner(struct refmatch *info)
417{
418 if (info->first_ref)
419 free(info->first_ref);
420}
421
422static char *find_default_branch(struct cgit_repo *repo)
423{
424 struct refmatch info;
425 char *ref;
426
427 info.req_ref = repo->defbranch;
428 info.first_ref = NULL;
429 info.match = 0;
430 for_each_branch_ref(find_current_ref, &info);
431 if (info.match)
432 ref = info.req_ref;
433 else
434 ref = info.first_ref;
435 if (ref)
436 ref = xstrdup(ref);
437 free_refmatch_inner(&info);
438
439 return ref;
440}
441
442static char *guess_defbranch(void)
443{
444 const char *ref;
445 unsigned char sha1[20];
446
447 ref = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
448 if (!ref || prefixcmp(ref, "refs/heads/"))
449 return "master";
450 return xstrdup(ref + 11);
451}
452/* The caller must free filename and ref after calling this. */
453static inline void parse_readme(const char *readme, char **filename, char **ref, struct cgit_repo *repo)
454{
455 const char *colon;
456
457 *filename = NULL;
458 *ref = NULL;
459
460 if (!readme || !readme[0])
461 return;
462
463 /* Check if the readme is tracked in the git repo. */
464 colon = strchr(readme, ':');
465 if (colon && strlen(colon) > 1) {
466 /* If it starts with a colon, we want to use
467 * the default branch */
468 if (colon == readme && repo->defbranch)
469 *ref = xstrdup(repo->defbranch);
470 else
471 *ref = xstrndup(readme, colon - readme);
472 readme = colon + 1;
473 }
474
475 /* Prepend repo path to relative readme path unless tracked. */
476 if (!(*ref) && readme[0] != '/')
477 *filename = fmtalloc("%s/%s", repo->path, readme);
478 else
479 *filename = xstrdup(readme);
480}
481static void choose_readme(struct cgit_repo *repo)
482{
483 int found;
484 char *filename, *ref;
485 struct string_list_item *entry;
486
487 if (!repo->readme.nr)
488 return;
489
490 found = 0;
491 for_each_string_list_item(entry, &repo->readme) {
492 parse_readme(entry->string, &filename, &ref, repo);
493 if (!filename) {
494 free(filename);
495 free(ref);
496 continue;
497 }
498 /* If there's only one item, we skip the possibly expensive
499 * selection process. */
500 if (repo->readme.nr == 1) {
501 found = 1;
502 break;
503 }
504 if (ref) {
505 if (cgit_ref_path_exists(filename, ref, 1)) {
506 found = 1;
507 break;
508 }
509 }
510 else if (!access(filename, R_OK)) {
511 found = 1;
512 break;
513 }
514 free(filename);
515 free(ref);
516 }
517 repo->readme.strdup_strings = 1;
518 string_list_clear(&repo->readme, 0);
519 repo->readme.strdup_strings = 0;
520 if (found)
521 string_list_append(&repo->readme, filename)->util = ref;
522}
523
524static int prepare_repo_cmd(struct cgit_context *ctx)
525{
526 unsigned char sha1[20];
527 int nongit = 0;
528 int rc;
529
530 /* The path to the git repository. */
531 setenv("GIT_DIR", ctx->repo->path, 1);
532
533 /* Do not look in /etc/ for gitconfig and gitattributes. */
534 setenv("GIT_CONFIG_NOSYSTEM", "1", 1);
535 setenv("GIT_ATTR_NOSYSTEM", "1", 1);
536 unsetenv("HOME");
537 unsetenv("XDG_CONFIG_HOME");
538
539 /* Setup the git directory and initialize the notes system. Both of these
540 * load local configuration from the git repository, so we do them both while
541 * the HOME variables are unset. */
542 setup_git_directory_gently(&nongit);
543 init_display_notes(NULL);
544
545 if (nongit) {
546 const char *name = ctx->repo->name;
547 rc = errno;
548 ctx->page.title = fmtalloc("%s - %s", ctx->cfg.root_title,
549 "config error");
550 ctx->repo = NULL;
551 cgit_print_http_headers(ctx);
552 cgit_print_docstart(ctx);
553 cgit_print_pageheader(ctx);
554 cgit_print_error("Failed to open %s: %s", name,
555 rc ? strerror(rc) : "Not a valid git repository");
556 cgit_print_docend();
557 return 1;
558 }
559 ctx->page.title = fmtalloc("%s - %s", ctx->repo->name, ctx->repo->desc);
560
561 if (!ctx->repo->defbranch)
562 ctx->repo->defbranch = guess_defbranch();
563
564 if (!ctx->qry.head) {
565 ctx->qry.nohead = 1;
566 ctx->qry.head = find_default_branch(ctx->repo);
567 }
568
569 if (!ctx->qry.head) {
570 cgit_print_http_headers(ctx);
571 cgit_print_docstart(ctx);
572 cgit_print_pageheader(ctx);
573 cgit_print_error("Repository seems to be empty");
574 cgit_print_docend();
575 return 1;
576 }
577
578 if (get_sha1(ctx->qry.head, sha1)) {
579 char *tmp = xstrdup(ctx->qry.head);
580 ctx->qry.head = ctx->repo->defbranch;
581 ctx->page.status = 404;
582 ctx->page.statusmsg = "Not found";
583 cgit_print_http_headers(ctx);
584 cgit_print_docstart(ctx);
585 cgit_print_pageheader(ctx);
586 cgit_print_error("Invalid branch: %s", tmp);
587 cgit_print_docend();
588 return 1;
589 }
590 sort_string_list(&ctx->repo->submodules);
591 cgit_prepare_repo_env(ctx->repo);
592 choose_readme(ctx->repo);
593 return 0;
594}
595
596static void process_request(void *cbdata)
597{
598 struct cgit_context *ctx = cbdata;
599 struct cgit_cmd *cmd;
600
601 cmd = cgit_get_cmd(ctx);
602 if (!cmd) {
603 ctx->page.title = "cgit error";
604 ctx->page.status = 404;
605 ctx->page.statusmsg = "Not found";
606 cgit_print_http_headers(ctx);
607 cgit_print_docstart(ctx);
608 cgit_print_pageheader(ctx);
609 cgit_print_error("Invalid request");
610 cgit_print_docend();
611 return;
612 }
613
614 if (!ctx->cfg.enable_http_clone && cmd->is_clone) {
615 html_status(404, "Not found", 0);
616 return;
617 }
618
619 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
620 * in-project path limit to be made available at ctx->qry.vpath.
621 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
622 */
623 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
624
625 if (cmd->want_repo && !ctx->repo) {
626 cgit_print_http_headers(ctx);
627 cgit_print_docstart(ctx);
628 cgit_print_pageheader(ctx);
629 cgit_print_error("No repository selected");
630 cgit_print_docend();
631 return;
632 }
633
634 if (ctx->repo && prepare_repo_cmd(ctx))
635 return;
636
637 if (cmd->want_layout) {
638 cgit_print_http_headers(ctx);
639 cgit_print_docstart(ctx);
640 cgit_print_pageheader(ctx);
641 }
642
643 cmd->fn(ctx);
644
645 if (cmd->want_layout)
646 cgit_print_docend();
647}
648
649static int cmp_repos(const void *a, const void *b)
650{
651 const struct cgit_repo *ra = a, *rb = b;
652 return strcmp(ra->url, rb->url);
653}
654
655static char *build_snapshot_setting(int bitmap)
656{
657 const struct cgit_snapshot_format *f;
658 struct strbuf result = STRBUF_INIT;
659
660 for (f = cgit_snapshot_formats; f->suffix; f++) {
661 if (f->bit & bitmap) {
662 if (result.len)
663 strbuf_addch(&result, ' ');
664 strbuf_addstr(&result, f->suffix);
665 }
666 }
667 return strbuf_detach(&result, NULL);
668}
669
670static char *get_first_line(char *txt)
671{
672 char *t = xstrdup(txt);
673 char *p = strchr(t, '\n');
674 if (p)
675 *p = '\0';
676 return t;
677}
678
679static void print_repo(FILE *f, struct cgit_repo *repo)
680{
681 struct string_list_item *item;
682 fprintf(f, "repo.url=%s\n", repo->url);
683 fprintf(f, "repo.name=%s\n", repo->name);
684 fprintf(f, "repo.path=%s\n", repo->path);
685 if (repo->owner)
686 fprintf(f, "repo.owner=%s\n", repo->owner);
687 if (repo->desc) {
688 char *tmp = get_first_line(repo->desc);
689 fprintf(f, "repo.desc=%s\n", tmp);
690 free(tmp);
691 }
692 for_each_string_list_item(item, &repo->readme) {
693 if (item->util)
694 fprintf(f, "repo.readme=%s:%s\n", (char *)item->util, item->string);
695 else
696 fprintf(f, "repo.readme=%s\n", item->string);
697 }
698 if (repo->defbranch)
699 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
700 if (repo->module_link)
701 fprintf(f, "repo.module-link=%s\n", repo->module_link);
702 if (repo->section)
703 fprintf(f, "repo.section=%s\n", repo->section);
704 if (repo->clone_url)
705 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
706 fprintf(f, "repo.enable-commit-graph=%d\n",
707 repo->enable_commit_graph);
708 fprintf(f, "repo.enable-log-filecount=%d\n",
709 repo->enable_log_filecount);
710 fprintf(f, "repo.enable-log-linecount=%d\n",
711 repo->enable_log_linecount);
712 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
713 cgit_fprintf_filter(repo->about_filter, f, "repo.about-filter=");
714 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
715 cgit_fprintf_filter(repo->commit_filter, f, "repo.commit-filter=");
716 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
717 cgit_fprintf_filter(repo->source_filter, f, "repo.source-filter=");
718 if (repo->email_filter && repo->email_filter != ctx.cfg.email_filter)
719 cgit_fprintf_filter(repo->email_filter, f, "repo.email-filter=");
720 if (repo->snapshots != ctx.cfg.snapshots) {
721 char *tmp = build_snapshot_setting(repo->snapshots);
722 fprintf(f, "repo.snapshots=%s\n", tmp ? tmp : "");
723 free(tmp);
724 }
725 if (repo->max_stats != ctx.cfg.max_stats)
726 fprintf(f, "repo.max-stats=%s\n",
727 cgit_find_stats_periodname(repo->max_stats));
728 if (repo->logo)
729 fprintf(f, "repo.logo=%s\n", repo->logo);
730 if (repo->logo_link)
731 fprintf(f, "repo.logo-link=%s\n", repo->logo_link);
732 fprintf(f, "repo.enable-remote-branches=%d\n", repo->enable_remote_branches);
733 fprintf(f, "repo.enable-subject-links=%d\n", repo->enable_subject_links);
734 if (repo->branch_sort == 1)
735 fprintf(f, "repo.branch-sort=age\n");
736 if (repo->commit_sort) {
737 if (repo->commit_sort == 1)
738 fprintf(f, "repo.commit-sort=date\n");
739 else if (repo->commit_sort == 2)
740 fprintf(f, "repo.commit-sort=topo\n");
741 }
742 fprintf(f, "\n");
743}
744
745static void print_repolist(FILE *f, struct cgit_repolist *list, int start)
746{
747 int i;
748
749 for (i = start; i < list->count; i++)
750 print_repo(f, &list->repos[i]);
751}
752
753/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
754 * and return 0 on success.
755 */
756static int generate_cached_repolist(const char *path, const char *cached_rc)
757{
758 struct strbuf locked_rc = STRBUF_INIT;
759 int result = 0;
760 int idx;
761 FILE *f;
762
763 strbuf_addf(&locked_rc, "%s.lock", cached_rc);
764 f = fopen(locked_rc.buf, "wx");
765 if (!f) {
766 /* Inform about the error unless the lockfile already existed,
767 * since that only means we've got concurrent requests.
768 */
769 result = errno;
770 if (result != EEXIST)
771 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
772 locked_rc.buf, strerror(result), result);
773 goto out;
774 }
775 idx = cgit_repolist.count;
776 if (ctx.cfg.project_list)
777 scan_projects(path, ctx.cfg.project_list, repo_config);
778 else
779 scan_tree(path, repo_config);
780 print_repolist(f, &cgit_repolist, idx);
781 if (rename(locked_rc.buf, cached_rc))
782 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
783 locked_rc.buf, cached_rc, strerror(errno), errno);
784 fclose(f);
785out:
786 strbuf_release(&locked_rc);
787 return result;
788}
789
790static void process_cached_repolist(const char *path)
791{
792 struct stat st;
793 struct strbuf cached_rc = STRBUF_INIT;
794 time_t age;
795 unsigned long hash;
796
797 hash = hash_str(path);
798 if (ctx.cfg.project_list)
799 hash += hash_str(ctx.cfg.project_list);
800 strbuf_addf(&cached_rc, "%s/rc-%8lx", ctx.cfg.cache_root, hash);
801
802 if (stat(cached_rc.buf, &st)) {
803 /* Nothing is cached, we need to scan without forking. And
804 * if we fail to generate a cached repolist, we need to
805 * invoke scan_tree manually.
806 */
807 if (generate_cached_repolist(path, cached_rc.buf)) {
808 if (ctx.cfg.project_list)
809 scan_projects(path, ctx.cfg.project_list,
810 repo_config);
811 else
812 scan_tree(path, repo_config);
813 }
814 goto out;
815 }
816
817 parse_configfile(cached_rc.buf, config_cb);
818
819 /* If the cached configfile hasn't expired, lets exit now */
820 age = time(NULL) - st.st_mtime;
821 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
822 goto out;
823
824 /* The cached repolist has been parsed, but it was old. So lets
825 * rescan the specified path and generate a new cached repolist
826 * in a child-process to avoid latency for the current request.
827 */
828 if (fork())
829 goto out;
830
831 exit(generate_cached_repolist(path, cached_rc.buf));
832out:
833 strbuf_release(&cached_rc);
834}
835
836static void cgit_parse_args(int argc, const char **argv)
837{
838 int i;
839 int scan = 0;
840
841 for (i = 1; i < argc; i++) {
842 if (!prefixcmp(argv[i], "--cache=")) {
843 ctx.cfg.cache_root = xstrdup(argv[i] + 8);
844 } else if (!strcmp(argv[i], "--nocache")) {
845 ctx.cfg.nocache = 1;
846 } else if (!strcmp(argv[i], "--nohttp")) {
847 ctx.env.no_http = "1";
848 } else if (!prefixcmp(argv[i], "--query=")) {
849 ctx.qry.raw = xstrdup(argv[i] + 8);
850 } else if (!prefixcmp(argv[i], "--repo=")) {
851 ctx.qry.repo = xstrdup(argv[i] + 7);
852 } else if (!prefixcmp(argv[i], "--page=")) {
853 ctx.qry.page = xstrdup(argv[i] + 7);
854 } else if (!prefixcmp(argv[i], "--head=")) {
855 ctx.qry.head = xstrdup(argv[i] + 7);
856 ctx.qry.has_symref = 1;
857 } else if (!prefixcmp(argv[i], "--sha1=")) {
858 ctx.qry.sha1 = xstrdup(argv[i] + 7);
859 ctx.qry.has_sha1 = 1;
860 } else if (!prefixcmp(argv[i], "--ofs=")) {
861 ctx.qry.ofs = atoi(argv[i] + 6);
862 } else if (!prefixcmp(argv[i], "--scan-tree=") ||
863 !prefixcmp(argv[i], "--scan-path=")) {
864 /*
865 * HACK: The global snapshot bit mask defines the set
866 * of allowed snapshot formats, but the config file
867 * hasn't been parsed yet so the mask is currently 0.
868 * By setting all bits high before scanning we make
869 * sure that any in-repo cgitrc snapshot setting is
870 * respected by scan_tree().
871 *
872 * NOTE: We assume that there aren't more than 8
873 * different snapshot formats supported by cgit...
874 */
875 ctx.cfg.snapshots = 0xFF;
876 scan++;
877 scan_tree(argv[i] + 12, repo_config);
878 }
879 }
880 if (scan) {
881 qsort(cgit_repolist.repos, cgit_repolist.count,
882 sizeof(struct cgit_repo), cmp_repos);
883 print_repolist(stdout, &cgit_repolist, 0);
884 exit(0);
885 }
886}
887
888static int calc_ttl()
889{
890 if (!ctx.repo)
891 return ctx.cfg.cache_root_ttl;
892
893 if (!ctx.qry.page)
894 return ctx.cfg.cache_repo_ttl;
895
896 if (!strcmp(ctx.qry.page, "about"))
897 return ctx.cfg.cache_about_ttl;
898
899 if (ctx.qry.has_sha1)
900 return ctx.cfg.cache_static_ttl;
901
902 if (ctx.qry.has_symref)
903 return ctx.cfg.cache_dynamic_ttl;
904
905 return ctx.cfg.cache_repo_ttl;
906}
907
908int main(int argc, const char **argv)
909{
910 const char *path;
911 int err, ttl;
912
913 cgit_init_filters();
914
915 prepare_context(&ctx);
916 cgit_repolist.length = 0;
917 cgit_repolist.count = 0;
918 cgit_repolist.repos = NULL;
919
920 cgit_parse_args(argc, argv);
921 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
922 ctx.repo = NULL;
923 http_parse_querystring(ctx.qry.raw, querystring_cb);
924
925 /* If virtual-root isn't specified in cgitrc, lets pretend
926 * that virtual-root equals SCRIPT_NAME, minus any possibly
927 * trailing slashes.
928 */
929 if (!ctx.cfg.virtual_root && ctx.cfg.script_name)
930 ctx.cfg.virtual_root = ensure_end(ctx.cfg.script_name, '/');
931
932 /* If no url parameter is specified on the querystring, lets
933 * use PATH_INFO as url. This allows cgit to work with virtual
934 * urls without the need for rewriterules in the webserver (as
935 * long as PATH_INFO is included in the cache lookup key).
936 */
937 path = ctx.env.path_info;
938 if (!ctx.qry.url && path) {
939 if (path[0] == '/')
940 path++;
941 ctx.qry.url = xstrdup(path);
942 if (ctx.qry.raw) {
943 char *newqry = fmtalloc("%s?%s", path, ctx.qry.raw);
944 free(ctx.qry.raw);
945 ctx.qry.raw = newqry;
946 } else
947 ctx.qry.raw = xstrdup(ctx.qry.url);
948 cgit_parse_url(ctx.qry.url);
949 }
950
951 ttl = calc_ttl();
952 if (ttl < 0)
953 ctx.page.expires += 10 * 365 * 24 * 60 * 60; /* 10 years */
954 else
955 ctx.page.expires += ttl * 60;
956 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
957 ctx.cfg.nocache = 1;
958 if (ctx.cfg.nocache)
959 ctx.cfg.cache_size = 0;
960 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
961 ctx.qry.raw, ttl, process_request, &ctx);
962 cgit_cleanup_filters();
963 if (err)
964 cgit_print_error("Error processing page: %s (%d)",
965 strerror(err), err);
966 return err;
967}