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