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 if (!strcmp(name, "name"))
64 repo->name = xstrdup(value);
65 else if (!strcmp(name, "clone-url"))
66 repo->clone_url = xstrdup(value);
67 else if (!strcmp(name, "desc"))
68 repo->desc = xstrdup(value);
69 else if (!strcmp(name, "owner"))
70 repo->owner = xstrdup(value);
71 else if (!strcmp(name, "defbranch"))
72 repo->defbranch = xstrdup(value);
73 else if (!strcmp(name, "snapshots"))
74 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
75 else if (!strcmp(name, "enable-commit-graph"))
76 repo->enable_commit_graph = ctx.cfg.enable_commit_graph * atoi(value);
77 else if (!strcmp(name, "enable-log-filecount"))
78 repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
79 else if (!strcmp(name, "enable-log-linecount"))
80 repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
81 else if (!strcmp(name, "enable-remote-branches"))
82 repo->enable_remote_branches = atoi(value);
83 else if (!strcmp(name, "enable-subject-links"))
84 repo->enable_subject_links = atoi(value);
85 else if (!strcmp(name, "max-stats"))
86 repo->max_stats = cgit_find_stats_period(value, NULL);
87 else if (!strcmp(name, "module-link"))
88 repo->module_link= xstrdup(value);
89 else if (!strcmp(name, "section"))
90 repo->section = xstrdup(value);
91 else if (!strcmp(name, "readme") && value != NULL)
92 repo->readme = xstrdup(value);
93 else if (!strcmp(name, "logo") && value != NULL)
94 repo->logo = xstrdup(value);
95 else if (!strcmp(name, "logo-link") && value != NULL)
96 repo->logo_link = xstrdup(value);
97 else if (ctx.cfg.enable_filter_overrides) {
98 if (!strcmp(name, "about-filter"))
99 repo->about_filter = new_filter(value, ABOUT);
100 else if (!strcmp(name, "commit-filter"))
101 repo->commit_filter = new_filter(value, COMMIT);
102 else if (!strcmp(name, "source-filter"))
103 repo->source_filter = new_filter(value, SOURCE);
104 }
105}
106
107void config_cb(const char *name, const char *value)
108{
109 if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
110 ctx.cfg.section = xstrdup(value);
111 else if (!strcmp(name, "repo.url"))
112 ctx.repo = cgit_add_repo(value);
113 else if (ctx.repo && !strcmp(name, "repo.path"))
114 ctx.repo->path = trim_end(value, '/');
115 else if (ctx.repo && !prefixcmp(name, "repo."))
116 repo_config(ctx.repo, name + 5, value);
117 else if (!strcmp(name, "readme"))
118 ctx.cfg.readme = xstrdup(value);
119 else if (!strcmp(name, "root-title"))
120 ctx.cfg.root_title = xstrdup(value);
121 else if (!strcmp(name, "root-desc"))
122 ctx.cfg.root_desc = xstrdup(value);
123 else if (!strcmp(name, "root-readme"))
124 ctx.cfg.root_readme = xstrdup(value);
125 else if (!strcmp(name, "css"))
126 ctx.cfg.css = xstrdup(value);
127 else if (!strcmp(name, "favicon"))
128 ctx.cfg.favicon = xstrdup(value);
129 else if (!strcmp(name, "footer"))
130 ctx.cfg.footer = xstrdup(value);
131 else if (!strcmp(name, "head-include"))
132 ctx.cfg.head_include = xstrdup(value);
133 else if (!strcmp(name, "header"))
134 ctx.cfg.header = xstrdup(value);
135 else if (!strcmp(name, "logo"))
136 ctx.cfg.logo = xstrdup(value);
137 else if (!strcmp(name, "index-header"))
138 ctx.cfg.index_header = xstrdup(value);
139 else if (!strcmp(name, "index-info"))
140 ctx.cfg.index_info = xstrdup(value);
141 else if (!strcmp(name, "logo-link"))
142 ctx.cfg.logo_link = xstrdup(value);
143 else if (!strcmp(name, "module-link"))
144 ctx.cfg.module_link = xstrdup(value);
145 else if (!strcmp(name, "strict-export"))
146 ctx.cfg.strict_export = xstrdup(value);
147 else if (!strcmp(name, "virtual-root")) {
148 ctx.cfg.virtual_root = trim_end(value, '/');
149 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
150 ctx.cfg.virtual_root = "";
151 } else if (!strcmp(name, "nocache"))
152 ctx.cfg.nocache = atoi(value);
153 else if (!strcmp(name, "noplainemail"))
154 ctx.cfg.noplainemail = atoi(value);
155 else if (!strcmp(name, "noheader"))
156 ctx.cfg.noheader = atoi(value);
157 else if (!strcmp(name, "snapshots"))
158 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
159 else if (!strcmp(name, "enable-filter-overrides"))
160 ctx.cfg.enable_filter_overrides = atoi(value);
161 else if (!strcmp(name, "enable-gitweb-owner"))
162 ctx.cfg.enable_gitweb_owner = atoi(value);
163 else if (!strcmp(name, "enable-http-clone"))
164 ctx.cfg.enable_http_clone = atoi(value);
165 else if (!strcmp(name, "enable-index-links"))
166 ctx.cfg.enable_index_links = atoi(value);
167 else if (!strcmp(name, "enable-commit-graph"))
168 ctx.cfg.enable_commit_graph = atoi(value);
169 else if (!strcmp(name, "enable-log-filecount"))
170 ctx.cfg.enable_log_filecount = atoi(value);
171 else if (!strcmp(name, "enable-log-linecount"))
172 ctx.cfg.enable_log_linecount = atoi(value);
173 else if (!strcmp(name, "enable-remote-branches"))
174 ctx.cfg.enable_remote_branches = atoi(value);
175 else if (!strcmp(name, "enable-subject-links"))
176 ctx.cfg.enable_subject_links = atoi(value);
177 else if (!strcmp(name, "enable-tree-linenumbers"))
178 ctx.cfg.enable_tree_linenumbers = atoi(value);
179 else if (!strcmp(name, "max-stats"))
180 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
181 else if (!strcmp(name, "cache-size"))
182 ctx.cfg.cache_size = atoi(value);
183 else if (!strcmp(name, "cache-root"))
184 ctx.cfg.cache_root = xstrdup(expand_macros(value));
185 else if (!strcmp(name, "cache-root-ttl"))
186 ctx.cfg.cache_root_ttl = atoi(value);
187 else if (!strcmp(name, "cache-repo-ttl"))
188 ctx.cfg.cache_repo_ttl = atoi(value);
189 else if (!strcmp(name, "cache-scanrc-ttl"))
190 ctx.cfg.cache_scanrc_ttl = atoi(value);
191 else if (!strcmp(name, "cache-static-ttl"))
192 ctx.cfg.cache_static_ttl = atoi(value);
193 else if (!strcmp(name, "cache-dynamic-ttl"))
194 ctx.cfg.cache_dynamic_ttl = atoi(value);
195 else if (!strcmp(name, "about-filter"))
196 ctx.cfg.about_filter = new_filter(value, ABOUT);
197 else if (!strcmp(name, "commit-filter"))
198 ctx.cfg.commit_filter = new_filter(value, COMMIT);
199 else if (!strcmp(name, "embedded"))
200 ctx.cfg.embedded = atoi(value);
201 else if (!strcmp(name, "max-atom-items"))
202 ctx.cfg.max_atom_items = atoi(value);
203 else if (!strcmp(name, "max-message-length"))
204 ctx.cfg.max_msg_len = atoi(value);
205 else if (!strcmp(name, "max-repodesc-length"))
206 ctx.cfg.max_repodesc_len = atoi(value);
207 else if (!strcmp(name, "max-blob-size"))
208 ctx.cfg.max_blob_size = atoi(value);
209 else if (!strcmp(name, "max-repo-count"))
210 ctx.cfg.max_repo_count = atoi(value);
211 else if (!strcmp(name, "max-commit-count"))
212 ctx.cfg.max_commit_count = atoi(value);
213 else if (!strcmp(name, "project-list"))
214 ctx.cfg.project_list = xstrdup(expand_macros(value));
215 else if (!strcmp(name, "scan-path"))
216 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
217 process_cached_repolist(expand_macros(value));
218 else if (ctx.cfg.project_list)
219 scan_projects(expand_macros(value),
220 ctx.cfg.project_list, repo_config);
221 else
222 scan_tree(expand_macros(value), repo_config);
223 else if (!strcmp(name, "scan-hidden-path"))
224 ctx.cfg.scan_hidden_path = atoi(value);
225 else if (!strcmp(name, "section-from-path"))
226 ctx.cfg.section_from_path = atoi(value);
227 else if (!strcmp(name, "source-filter"))
228 ctx.cfg.source_filter = 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, "renamelimit"))
240 ctx.cfg.renamelimit = atoi(value);
241 else if (!strcmp(name, "remove-suffix"))
242 ctx.cfg.remove_suffix = atoi(value);
243 else if (!strcmp(name, "robots"))
244 ctx.cfg.robots = xstrdup(value);
245 else if (!strcmp(name, "clone-prefix"))
246 ctx.cfg.clone_prefix = xstrdup(value);
247 else if (!strcmp(name, "clone-url"))
248 ctx.cfg.clone_url = xstrdup(value);
249 else if (!strcmp(name, "local-time"))
250 ctx.cfg.local_time = atoi(value);
251 else if (!prefixcmp(name, "mimetype."))
252 add_mimetype(name + 9, value);
253 else if (!strcmp(name, "include"))
254 parse_configfile(expand_macros(value), config_cb);
255}
256
257static void querystring_cb(const char *name, const char *value)
258{
259 if (!value)
260 value = "";
261
262 if (!strcmp(name,"r")) {
263 ctx.qry.repo = xstrdup(value);
264 ctx.repo = cgit_get_repoinfo(value);
265 } else if (!strcmp(name, "p")) {
266 ctx.qry.page = xstrdup(value);
267 } else if (!strcmp(name, "url")) {
268 if (*value == '/')
269 value++;
270 ctx.qry.url = xstrdup(value);
271 cgit_parse_url(value);
272 } else if (!strcmp(name, "qt")) {
273 ctx.qry.grep = xstrdup(value);
274 } else if (!strcmp(name, "q")) {
275 ctx.qry.search = xstrdup(value);
276 } else if (!strcmp(name, "h")) {
277 ctx.qry.head = xstrdup(value);
278 ctx.qry.has_symref = 1;
279 } else if (!strcmp(name, "id")) {
280 ctx.qry.sha1 = xstrdup(value);
281 ctx.qry.has_sha1 = 1;
282 } else if (!strcmp(name, "id2")) {
283 ctx.qry.sha2 = xstrdup(value);
284 ctx.qry.has_sha1 = 1;
285 } else if (!strcmp(name, "ofs")) {
286 ctx.qry.ofs = atoi(value);
287 } else if (!strcmp(name, "path")) {
288 ctx.qry.path = trim_end(value, '/');
289 } else if (!strcmp(name, "name")) {
290 ctx.qry.name = xstrdup(value);
291 } else if (!strcmp(name, "mimetype")) {
292 ctx.qry.mimetype = xstrdup(value);
293 } else if (!strcmp(name, "s")){
294 ctx.qry.sort = xstrdup(value);
295 } else if (!strcmp(name, "showmsg")) {
296 ctx.qry.showmsg = atoi(value);
297 } else if (!strcmp(name, "period")) {
298 ctx.qry.period = xstrdup(value);
299 } else if (!strcmp(name, "ss")) {
300 ctx.qry.ssdiff = atoi(value);
301 } else if (!strcmp(name, "all")) {
302 ctx.qry.show_all = atoi(value);
303 } else if (!strcmp(name, "context")) {
304 ctx.qry.context = atoi(value);
305 } else if (!strcmp(name, "ignorews")) {
306 ctx.qry.ignorews = atoi(value);
307 }
308}
309
310char *xstrdupn(const char *str)
311{
312 return (str ? xstrdup(str) : NULL);
313}
314
315static void prepare_context(struct cgit_context *ctx)
316{
317 memset(ctx, 0, sizeof(*ctx));
318 ctx->cfg.agefile = "info/web/last-modified";
319 ctx->cfg.nocache = 0;
320 ctx->cfg.cache_size = 0;
321 ctx->cfg.cache_dynamic_ttl = 5;
322 ctx->cfg.cache_max_create_time = 5;
323 ctx->cfg.cache_repo_ttl = 5;
324 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
325 ctx->cfg.cache_root_ttl = 5;
326 ctx->cfg.cache_scanrc_ttl = 15;
327 ctx->cfg.cache_static_ttl = -1;
328 ctx->cfg.css = "/cgit.css";
329 ctx->cfg.logo = "/cgit.png";
330 ctx->cfg.local_time = 0;
331 ctx->cfg.enable_gitweb_owner = 1;
332 ctx->cfg.enable_http_clone = 1;
333 ctx->cfg.enable_tree_linenumbers = 1;
334 ctx->cfg.max_repo_count = 50;
335 ctx->cfg.max_commit_count = 50;
336 ctx->cfg.max_lock_attempts = 5;
337 ctx->cfg.max_msg_len = 80;
338 ctx->cfg.max_repodesc_len = 80;
339 ctx->cfg.max_blob_size = 0;
340 ctx->cfg.max_stats = 0;
341 ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
342 ctx->cfg.project_list = NULL;
343 ctx->cfg.renamelimit = -1;
344 ctx->cfg.remove_suffix = 0;
345 ctx->cfg.robots = "index, nofollow";
346 ctx->cfg.root_title = "Git repository browser";
347 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
348 ctx->cfg.scan_hidden_path = 0;
349 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
350 ctx->cfg.section = "";
351 ctx->cfg.summary_branches = 10;
352 ctx->cfg.summary_log = 10;
353 ctx->cfg.summary_tags = 10;
354 ctx->cfg.max_atom_items = 10;
355 ctx->cfg.ssdiff = 0;
356 ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
357 ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
358 ctx->env.https = xstrdupn(getenv("HTTPS"));
359 ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
360 ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
361 ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
362 ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
363 ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
364 ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
365 ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
366 ctx->page.mimetype = "text/html";
367 ctx->page.charset = PAGE_ENCODING;
368 ctx->page.filename = NULL;
369 ctx->page.size = 0;
370 ctx->page.modified = time(NULL);
371 ctx->page.expires = ctx->page.modified;
372 ctx->page.etag = NULL;
373 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
374 if (ctx->env.script_name)
375 ctx->cfg.script_name = ctx->env.script_name;
376 if (ctx->env.query_string)
377 ctx->qry.raw = ctx->env.query_string;
378 if (!ctx->env.cgit_config)
379 ctx->env.cgit_config = CGIT_CONFIG;
380}
381
382struct refmatch {
383 char *req_ref;
384 char *first_ref;
385 int match;
386};
387
388int find_current_ref(const char *refname, const unsigned char *sha1,
389 int flags, void *cb_data)
390{
391 struct refmatch *info;
392
393 info = (struct refmatch *)cb_data;
394 if (!strcmp(refname, info->req_ref))
395 info->match = 1;
396 if (!info->first_ref)
397 info->first_ref = xstrdup(refname);
398 return info->match;
399}
400
401char *find_default_branch(struct cgit_repo *repo)
402{
403 struct refmatch info;
404 char *ref;
405
406 info.req_ref = repo->defbranch;
407 info.first_ref = NULL;
408 info.match = 0;
409 for_each_branch_ref(find_current_ref, &info);
410 if (info.match)
411 ref = info.req_ref;
412 else
413 ref = info.first_ref;
414 if (ref)
415 ref = xstrdup(ref);
416 return ref;
417}
418
419static char *guess_defbranch(const char *repo_path)
420{
421 int fd, len;
422 char buffer[256];
423 char *ref_start;
424 char *head;
425
426 head = fmt("%s/HEAD", repo_path);
427 fd = open(head, O_RDONLY);
428 if (fd == -1)
429 return xstrdup("master");
430
431 memset(buffer, 0, sizeof(buffer));
432 len = read_in_full(fd, buffer, sizeof(buffer) - 1);
433 close(fd);
434
435 if(!memcmp(buffer, "ref: refs/heads/", 16))
436 return xstrndup(buffer + 16, len - 17);
437
438 if(strlen(buffer) == 41) {
439 /* probably contains a SHA1 sum */
440 memset(buffer, 0, sizeof(buffer));
441 if(readlink(head, buffer, sizeof(buffer)-1)) {
442 ref_start = memmem(buffer, sizeof(buffer)-1, "refs/heads/", 11);
443 if(ref_start)
444 return xstrdup(ref_start+11);
445 }
446 }
447 return xstrdup("master");
448}
449
450static int prepare_repo_cmd(struct cgit_context *ctx)
451{
452 char *tmp;
453 unsigned char sha1[20];
454 int nongit = 0;
455 int rc;
456
457 setenv("GIT_DIR", ctx->repo->path, 1);
458 setup_git_directory_gently(&nongit);
459 if (nongit) {
460 rc = errno;
461 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
462 "config error");
463 tmp = fmt("Failed to open %s: %s",
464 ctx->repo->name,
465 rc ? strerror(rc) : "Not a valid git repository");
466 ctx->repo = NULL;
467 cgit_print_http_headers(ctx);
468 cgit_print_docstart(ctx);
469 cgit_print_pageheader(ctx);
470 cgit_print_error(tmp);
471 cgit_print_docend();
472 return 1;
473 }
474 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
475
476 if (!ctx->repo->defbranch)
477 ctx->repo->defbranch = guess_defbranch(ctx->repo->path);
478
479 if (!ctx->qry.head) {
480 ctx->qry.nohead = 1;
481 ctx->qry.head = find_default_branch(ctx->repo);
482 }
483
484 if (!ctx->qry.head) {
485 cgit_print_http_headers(ctx);
486 cgit_print_docstart(ctx);
487 cgit_print_pageheader(ctx);
488 cgit_print_error("Repository seems to be empty");
489 cgit_print_docend();
490 return 1;
491 }
492
493 if (get_sha1(ctx->qry.head, sha1)) {
494 tmp = xstrdup(ctx->qry.head);
495 ctx->qry.head = ctx->repo->defbranch;
496 ctx->page.status = 404;
497 ctx->page.statusmsg = "Not found";
498 cgit_print_http_headers(ctx);
499 cgit_print_docstart(ctx);
500 cgit_print_pageheader(ctx);
501 cgit_print_error(fmt("Invalid branch: %s", tmp));
502 cgit_print_docend();
503 return 1;
504 }
505 cgit_prepare_repo_env(ctx->repo);
506 return 0;
507}
508
509static void process_request(void *cbdata)
510{
511 struct cgit_context *ctx = cbdata;
512 struct cgit_cmd *cmd;
513
514 cmd = cgit_get_cmd(ctx);
515 if (!cmd) {
516 ctx->page.title = "cgit error";
517 ctx->page.status = 404;
518 ctx->page.statusmsg = "Not found";
519 cgit_print_http_headers(ctx);
520 cgit_print_docstart(ctx);
521 cgit_print_pageheader(ctx);
522 cgit_print_error("Invalid request");
523 cgit_print_docend();
524 return;
525 }
526
527 if (!ctx->cfg.enable_http_clone && cmd->is_clone) {
528 html_status(404, "Not found", 0);
529 return;
530 }
531
532 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
533 * in-project path limit to be made available at ctx->qry.vpath.
534 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
535 */
536 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
537
538 if (cmd->want_repo && !ctx->repo) {
539 cgit_print_http_headers(ctx);
540 cgit_print_docstart(ctx);
541 cgit_print_pageheader(ctx);
542 cgit_print_error(fmt("No repository selected"));
543 cgit_print_docend();
544 return;
545 }
546
547 if (ctx->repo && prepare_repo_cmd(ctx))
548 return;
549
550 if (cmd->want_layout) {
551 cgit_print_http_headers(ctx);
552 cgit_print_docstart(ctx);
553 cgit_print_pageheader(ctx);
554 }
555
556 cmd->fn(ctx);
557
558 if (cmd->want_layout)
559 cgit_print_docend();
560}
561
562int cmp_repos(const void *a, const void *b)
563{
564 const struct cgit_repo *ra = a, *rb = b;
565 return strcmp(ra->url, rb->url);
566}
567
568char *build_snapshot_setting(int bitmap)
569{
570 const struct cgit_snapshot_format *f;
571 char *result = xstrdup("");
572 char *tmp;
573 int len;
574
575 for (f = cgit_snapshot_formats; f->suffix; f++) {
576 if (f->bit & bitmap) {
577 tmp = result;
578 result = xstrdup(fmt("%s%s ", tmp, f->suffix));
579 free(tmp);
580 }
581 }
582 len = strlen(result);
583 if (len)
584 result[len - 1] = '\0';
585 return result;
586}
587
588char *get_first_line(char *txt)
589{
590 char *t = xstrdup(txt);
591 char *p = strchr(t, '\n');
592 if (p)
593 *p = '\0';
594 return t;
595}
596
597void print_repo(FILE *f, struct cgit_repo *repo)
598{
599 fprintf(f, "repo.url=%s\n", repo->url);
600 fprintf(f, "repo.name=%s\n", repo->name);
601 fprintf(f, "repo.path=%s\n", repo->path);
602 if (repo->owner)
603 fprintf(f, "repo.owner=%s\n", repo->owner);
604 if (repo->desc) {
605 char *tmp = get_first_line(repo->desc);
606 fprintf(f, "repo.desc=%s\n", tmp);
607 free(tmp);
608 }
609 if (repo->readme)
610 fprintf(f, "repo.readme=%s\n", repo->readme);
611 if (repo->defbranch)
612 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
613 if (repo->module_link)
614 fprintf(f, "repo.module-link=%s\n", repo->module_link);
615 if (repo->section)
616 fprintf(f, "repo.section=%s\n", repo->section);
617 if (repo->clone_url)
618 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
619 fprintf(f, "repo.enable-commit-graph=%d\n",
620 repo->enable_commit_graph);
621 fprintf(f, "repo.enable-log-filecount=%d\n",
622 repo->enable_log_filecount);
623 fprintf(f, "repo.enable-log-linecount=%d\n",
624 repo->enable_log_linecount);
625 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
626 fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
627 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
628 fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
629 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
630 fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
631 if (repo->snapshots != ctx.cfg.snapshots) {
632 char *tmp = build_snapshot_setting(repo->snapshots);
633 fprintf(f, "repo.snapshots=%s\n", tmp);
634 free(tmp);
635 }
636 if (repo->max_stats != ctx.cfg.max_stats)
637 fprintf(f, "repo.max-stats=%s\n",
638 cgit_find_stats_periodname(repo->max_stats));
639 fprintf(f, "\n");
640}
641
642void print_repolist(FILE *f, struct cgit_repolist *list, int start)
643{
644 int i;
645
646 for(i = start; i < list->count; i++)
647 print_repo(f, &list->repos[i]);
648}
649
650/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
651 * and return 0 on success.
652 */
653static int generate_cached_repolist(const char *path, const char *cached_rc)
654{
655 char *locked_rc;
656 int idx;
657 FILE *f;
658
659 locked_rc = xstrdup(fmt("%s.lock", cached_rc));
660 f = fopen(locked_rc, "wx");
661 if (!f) {
662 /* Inform about the error unless the lockfile already existed,
663 * since that only means we've got concurrent requests.
664 */
665 if (errno != EEXIST)
666 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
667 locked_rc, strerror(errno), errno);
668 return errno;
669 }
670 idx = cgit_repolist.count;
671 if (ctx.cfg.project_list)
672 scan_projects(path, ctx.cfg.project_list, repo_config);
673 else
674 scan_tree(path, repo_config);
675 print_repolist(f, &cgit_repolist, idx);
676 if (rename(locked_rc, cached_rc))
677 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
678 locked_rc, cached_rc, strerror(errno), errno);
679 fclose(f);
680 return 0;
681}
682
683static void process_cached_repolist(const char *path)
684{
685 struct stat st;
686 char *cached_rc;
687 time_t age;
688 unsigned long hash;
689
690 hash = hash_str(path);
691 if (ctx.cfg.project_list)
692 hash += hash_str(ctx.cfg.project_list);
693 cached_rc = xstrdup(fmt("%s/rc-%8lx", ctx.cfg.cache_root, hash));
694
695 if (stat(cached_rc, &st)) {
696 /* Nothing is cached, we need to scan without forking. And
697 * if we fail to generate a cached repolist, we need to
698 * invoke scan_tree manually.
699 */
700 if (generate_cached_repolist(path, cached_rc)) {
701 if (ctx.cfg.project_list)
702 scan_projects(path, ctx.cfg.project_list,
703 repo_config);
704 else
705 scan_tree(path, repo_config);
706 }
707 return;
708 }
709
710 parse_configfile(cached_rc, config_cb);
711
712 /* If the cached configfile hasn't expired, lets exit now */
713 age = time(NULL) - st.st_mtime;
714 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
715 return;
716
717 /* The cached repolist has been parsed, but it was old. So lets
718 * rescan the specified path and generate a new cached repolist
719 * in a child-process to avoid latency for the current request.
720 */
721 if (fork())
722 return;
723
724 exit(generate_cached_repolist(path, cached_rc));
725}
726
727static void cgit_parse_args(int argc, const char **argv)
728{
729 int i;
730 int scan = 0;
731
732 for (i = 1; i < argc; i++) {
733 if (!strncmp(argv[i], "--cache=", 8)) {
734 ctx.cfg.cache_root = xstrdup(argv[i]+8);
735 }
736 if (!strcmp(argv[i], "--nocache")) {
737 ctx.cfg.nocache = 1;
738 }
739 if (!strcmp(argv[i], "--nohttp")) {
740 ctx.env.no_http = "1";
741 }
742 if (!strncmp(argv[i], "--query=", 8)) {
743 ctx.qry.raw = xstrdup(argv[i]+8);
744 }
745 if (!strncmp(argv[i], "--repo=", 7)) {
746 ctx.qry.repo = xstrdup(argv[i]+7);
747 }
748 if (!strncmp(argv[i], "--page=", 7)) {
749 ctx.qry.page = xstrdup(argv[i]+7);
750 }
751 if (!strncmp(argv[i], "--head=", 7)) {
752 ctx.qry.head = xstrdup(argv[i]+7);
753 ctx.qry.has_symref = 1;
754 }
755 if (!strncmp(argv[i], "--sha1=", 7)) {
756 ctx.qry.sha1 = xstrdup(argv[i]+7);
757 ctx.qry.has_sha1 = 1;
758 }
759 if (!strncmp(argv[i], "--ofs=", 6)) {
760 ctx.qry.ofs = atoi(argv[i]+6);
761 }
762 if (!strncmp(argv[i], "--scan-tree=", 12) ||
763 !strncmp(argv[i], "--scan-path=", 12)) {
764 /* HACK: the global snapshot bitmask defines the
765 * set of allowed snapshot formats, but the config
766 * file hasn't been parsed yet so the mask is
767 * currently 0. By setting all bits high before
768 * scanning we make sure that any in-repo cgitrc
769 * snapshot setting is respected by scan_tree().
770 * BTW: we assume that there'll never be more than
771 * 255 different snapshot formats supported by cgit...
772 */
773 ctx.cfg.snapshots = 0xFF;
774 scan++;
775 scan_tree(argv[i] + 12, repo_config);
776 }
777 }
778 if (scan) {
779 qsort(cgit_repolist.repos, cgit_repolist.count,
780 sizeof(struct cgit_repo), cmp_repos);
781 print_repolist(stdout, &cgit_repolist, 0);
782 exit(0);
783 }
784}
785
786static int calc_ttl()
787{
788 if (!ctx.repo)
789 return ctx.cfg.cache_root_ttl;
790
791 if (!ctx.qry.page)
792 return ctx.cfg.cache_repo_ttl;
793
794 if (ctx.qry.has_symref)
795 return ctx.cfg.cache_dynamic_ttl;
796
797 if (ctx.qry.has_sha1)
798 return ctx.cfg.cache_static_ttl;
799
800 return ctx.cfg.cache_repo_ttl;
801}
802
803int main(int argc, const char **argv)
804{
805 const char *path;
806 char *qry;
807 int err, ttl;
808
809 prepare_context(&ctx);
810 cgit_repolist.length = 0;
811 cgit_repolist.count = 0;
812 cgit_repolist.repos = NULL;
813
814 cgit_parse_args(argc, argv);
815 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
816 ctx.repo = NULL;
817 http_parse_querystring(ctx.qry.raw, querystring_cb);
818
819 /* If virtual-root isn't specified in cgitrc, lets pretend
820 * that virtual-root equals SCRIPT_NAME, minus any possibly
821 * trailing slashes.
822 */
823 if (!ctx.cfg.virtual_root && ctx.cfg.script_name) {
824 ctx.cfg.virtual_root = trim_end(ctx.cfg.script_name, '/');
825 if (!ctx.cfg.virtual_root)
826 ctx.cfg.virtual_root = "";
827 }
828
829 /* If no url parameter is specified on the querystring, lets
830 * use PATH_INFO as url. This allows cgit to work with virtual
831 * urls without the need for rewriterules in the webserver (as
832 * long as PATH_INFO is included in the cache lookup key).
833 */
834 path = ctx.env.path_info;
835 if (!ctx.qry.url && path) {
836 if (path[0] == '/')
837 path++;
838 ctx.qry.url = xstrdup(path);
839 if (ctx.qry.raw) {
840 qry = ctx.qry.raw;
841 ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
842 free(qry);
843 } else
844 ctx.qry.raw = xstrdup(ctx.qry.url);
845 cgit_parse_url(ctx.qry.url);
846 }
847
848 ttl = calc_ttl();
849 ctx.page.expires += ttl*60;
850 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
851 ctx.cfg.nocache = 1;
852 if (ctx.cfg.nocache)
853 ctx.cfg.cache_size = 0;
854 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
855 ctx.qry.raw, ttl, process_request, &ctx);
856 if (err)
857 cgit_print_error(fmt("Error processing page: %s (%d)",
858 strerror(err), err));
859 return err;
860}