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