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