cgit.c (view raw)
1/* cgit.c: cgi for the git scm
2 *
3 * Copyright (C) 2006 Lars Hjemli
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 "scan-tree.h"
17
18const char *cgit_version = CGIT_VERSION;
19
20void add_mimetype(const char *name, const char *value)
21{
22 struct string_list_item *item;
23
24 item = string_list_insert(xstrdup(name), &ctx.cfg.mimetypes);
25 item->util = xstrdup(value);
26}
27
28struct cgit_filter *new_filter(const char *cmd, int extra_args)
29{
30 struct cgit_filter *f;
31
32 if (!cmd || !cmd[0])
33 return NULL;
34
35 f = xmalloc(sizeof(struct cgit_filter));
36 f->cmd = xstrdup(cmd);
37 f->argv = xmalloc((2 + extra_args) * sizeof(char *));
38 f->argv[0] = f->cmd;
39 f->argv[1] = NULL;
40 return f;
41}
42
43static void process_cached_repolist(const char *path);
44
45void repo_config(struct cgit_repo *repo, const char *name, const char *value)
46{
47 if (!strcmp(name, "name"))
48 repo->name = xstrdup(value);
49 else if (!strcmp(name, "clone-url"))
50 repo->clone_url = xstrdup(value);
51 else if (!strcmp(name, "desc"))
52 repo->desc = xstrdup(value);
53 else if (!strcmp(name, "owner"))
54 repo->owner = xstrdup(value);
55 else if (!strcmp(name, "defbranch"))
56 repo->defbranch = xstrdup(value);
57 else if (!strcmp(name, "snapshots"))
58 repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
59 else if (!strcmp(name, "enable-log-filecount"))
60 repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
61 else if (!strcmp(name, "enable-log-linecount"))
62 repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
63 else if (!strcmp(name, "enable-remote-branches"))
64 repo->enable_remote_branches = atoi(value);
65 else if (!strcmp(name, "enable-subject-links"))
66 repo->enable_subject_links = atoi(value);
67 else if (!strcmp(name, "max-stats"))
68 repo->max_stats = cgit_find_stats_period(value, NULL);
69 else if (!strcmp(name, "module-link"))
70 repo->module_link= xstrdup(value);
71 else if (!strcmp(name, "section"))
72 repo->section = xstrdup(value);
73 else if (!strcmp(name, "readme") && value != NULL) {
74 if (*value == '/')
75 repo->readme = xstrdup(value);
76 else
77 repo->readme = xstrdup(fmt("%s/%s", repo->path, value));
78 } else if (ctx.cfg.enable_filter_overrides) {
79 if (!strcmp(name, "about-filter"))
80 repo->about_filter = new_filter(value, 0);
81 else if (!strcmp(name, "commit-filter"))
82 repo->commit_filter = new_filter(value, 0);
83 else if (!strcmp(name, "source-filter"))
84 repo->source_filter = new_filter(value, 1);
85 }
86}
87
88void config_cb(const char *name, const char *value)
89{
90 if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
91 ctx.cfg.section = xstrdup(value);
92 else if (!strcmp(name, "repo.url"))
93 ctx.repo = cgit_add_repo(value);
94 else if (ctx.repo && !strcmp(name, "repo.path"))
95 ctx.repo->path = trim_end(value, '/');
96 else if (ctx.repo && !prefixcmp(name, "repo."))
97 repo_config(ctx.repo, name + 5, value);
98 else if (!strcmp(name, "root-title"))
99 ctx.cfg.root_title = xstrdup(value);
100 else if (!strcmp(name, "root-desc"))
101 ctx.cfg.root_desc = xstrdup(value);
102 else if (!strcmp(name, "root-readme"))
103 ctx.cfg.root_readme = xstrdup(value);
104 else if (!strcmp(name, "css"))
105 ctx.cfg.css = xstrdup(value);
106 else if (!strcmp(name, "favicon"))
107 ctx.cfg.favicon = xstrdup(value);
108 else if (!strcmp(name, "footer"))
109 ctx.cfg.footer = xstrdup(value);
110 else if (!strcmp(name, "head-include"))
111 ctx.cfg.head_include = xstrdup(value);
112 else if (!strcmp(name, "header"))
113 ctx.cfg.header = xstrdup(value);
114 else if (!strcmp(name, "logo"))
115 ctx.cfg.logo = xstrdup(value);
116 else if (!strcmp(name, "index-header"))
117 ctx.cfg.index_header = xstrdup(value);
118 else if (!strcmp(name, "index-info"))
119 ctx.cfg.index_info = xstrdup(value);
120 else if (!strcmp(name, "logo-link"))
121 ctx.cfg.logo_link = xstrdup(value);
122 else if (!strcmp(name, "module-link"))
123 ctx.cfg.module_link = xstrdup(value);
124 else if (!strcmp(name, "virtual-root")) {
125 ctx.cfg.virtual_root = trim_end(value, '/');
126 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
127 ctx.cfg.virtual_root = "";
128 } else if (!strcmp(name, "nocache"))
129 ctx.cfg.nocache = atoi(value);
130 else if (!strcmp(name, "noplainemail"))
131 ctx.cfg.noplainemail = atoi(value);
132 else if (!strcmp(name, "noheader"))
133 ctx.cfg.noheader = atoi(value);
134 else if (!strcmp(name, "snapshots"))
135 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
136 else if (!strcmp(name, "enable-filter-overrides"))
137 ctx.cfg.enable_filter_overrides = atoi(value);
138 else if (!strcmp(name, "enable-index-links"))
139 ctx.cfg.enable_index_links = atoi(value);
140 else if (!strcmp(name, "enable-log-filecount"))
141 ctx.cfg.enable_log_filecount = atoi(value);
142 else if (!strcmp(name, "enable-log-linecount"))
143 ctx.cfg.enable_log_linecount = atoi(value);
144 else if (!strcmp(name, "enable-remote-branches"))
145 ctx.cfg.enable_remote_branches = atoi(value);
146 else if (!strcmp(name, "enable-subject-links"))
147 ctx.cfg.enable_subject_links = atoi(value);
148 else if (!strcmp(name, "enable-tree-linenumbers"))
149 ctx.cfg.enable_tree_linenumbers = atoi(value);
150 else if (!strcmp(name, "max-stats"))
151 ctx.cfg.max_stats = cgit_find_stats_period(value, NULL);
152 else if (!strcmp(name, "cache-size"))
153 ctx.cfg.cache_size = atoi(value);
154 else if (!strcmp(name, "cache-root"))
155 ctx.cfg.cache_root = xstrdup(expand_macros(value));
156 else if (!strcmp(name, "cache-root-ttl"))
157 ctx.cfg.cache_root_ttl = atoi(value);
158 else if (!strcmp(name, "cache-repo-ttl"))
159 ctx.cfg.cache_repo_ttl = atoi(value);
160 else if (!strcmp(name, "cache-scanrc-ttl"))
161 ctx.cfg.cache_scanrc_ttl = atoi(value);
162 else if (!strcmp(name, "cache-static-ttl"))
163 ctx.cfg.cache_static_ttl = atoi(value);
164 else if (!strcmp(name, "cache-dynamic-ttl"))
165 ctx.cfg.cache_dynamic_ttl = atoi(value);
166 else if (!strcmp(name, "about-filter"))
167 ctx.cfg.about_filter = new_filter(value, 0);
168 else if (!strcmp(name, "commit-filter"))
169 ctx.cfg.commit_filter = new_filter(value, 0);
170 else if (!strcmp(name, "embedded"))
171 ctx.cfg.embedded = atoi(value);
172 else if (!strcmp(name, "max-atom-items"))
173 ctx.cfg.max_atom_items = atoi(value);
174 else if (!strcmp(name, "max-message-length"))
175 ctx.cfg.max_msg_len = atoi(value);
176 else if (!strcmp(name, "max-repodesc-length"))
177 ctx.cfg.max_repodesc_len = atoi(value);
178 else if (!strcmp(name, "max-blob-size"))
179 ctx.cfg.max_blob_size = atoi(value);
180 else if (!strcmp(name, "max-repo-count"))
181 ctx.cfg.max_repo_count = atoi(value);
182 else if (!strcmp(name, "max-commit-count"))
183 ctx.cfg.max_commit_count = atoi(value);
184 else if (!strcmp(name, "project-list"))
185 ctx.cfg.project_list = xstrdup(expand_macros(value));
186 else if (!strcmp(name, "scan-path"))
187 if (!ctx.cfg.nocache && ctx.cfg.cache_size)
188 process_cached_repolist(expand_macros(value));
189 else if (ctx.cfg.project_list)
190 scan_projects(expand_macros(value),
191 ctx.cfg.project_list, repo_config);
192 else
193 scan_tree(expand_macros(value), repo_config);
194 else if (!strcmp(name, "source-filter"))
195 ctx.cfg.source_filter = new_filter(value, 1);
196 else if (!strcmp(name, "summary-log"))
197 ctx.cfg.summary_log = atoi(value);
198 else if (!strcmp(name, "summary-branches"))
199 ctx.cfg.summary_branches = atoi(value);
200 else if (!strcmp(name, "summary-tags"))
201 ctx.cfg.summary_tags = atoi(value);
202 else if (!strcmp(name, "side-by-side-diffs"))
203 ctx.cfg.ssdiff = atoi(value);
204 else if (!strcmp(name, "agefile"))
205 ctx.cfg.agefile = xstrdup(value);
206 else if (!strcmp(name, "renamelimit"))
207 ctx.cfg.renamelimit = atoi(value);
208 else if (!strcmp(name, "remove-suffix"))
209 ctx.cfg.remove_suffix = atoi(value);
210 else if (!strcmp(name, "robots"))
211 ctx.cfg.robots = xstrdup(value);
212 else if (!strcmp(name, "clone-prefix"))
213 ctx.cfg.clone_prefix = xstrdup(value);
214 else if (!strcmp(name, "local-time"))
215 ctx.cfg.local_time = atoi(value);
216 else if (!prefixcmp(name, "mimetype."))
217 add_mimetype(name + 9, value);
218 else if (!strcmp(name, "include"))
219 parse_configfile(expand_macros(value), config_cb);
220}
221
222static void querystring_cb(const char *name, const char *value)
223{
224 if (!value)
225 value = "";
226
227 if (!strcmp(name,"r")) {
228 ctx.qry.repo = xstrdup(value);
229 ctx.repo = cgit_get_repoinfo(value);
230 } else if (!strcmp(name, "p")) {
231 ctx.qry.page = xstrdup(value);
232 } else if (!strcmp(name, "url")) {
233 if (*value == '/')
234 value++;
235 ctx.qry.url = xstrdup(value);
236 cgit_parse_url(value);
237 } else if (!strcmp(name, "qt")) {
238 ctx.qry.grep = xstrdup(value);
239 } else if (!strcmp(name, "q")) {
240 ctx.qry.search = xstrdup(value);
241 } else if (!strcmp(name, "h")) {
242 ctx.qry.head = xstrdup(value);
243 ctx.qry.has_symref = 1;
244 } else if (!strcmp(name, "id")) {
245 ctx.qry.sha1 = xstrdup(value);
246 ctx.qry.has_sha1 = 1;
247 } else if (!strcmp(name, "id2")) {
248 ctx.qry.sha2 = xstrdup(value);
249 ctx.qry.has_sha1 = 1;
250 } else if (!strcmp(name, "ofs")) {
251 ctx.qry.ofs = atoi(value);
252 } else if (!strcmp(name, "path")) {
253 ctx.qry.path = trim_end(value, '/');
254 } else if (!strcmp(name, "name")) {
255 ctx.qry.name = xstrdup(value);
256 } else if (!strcmp(name, "mimetype")) {
257 ctx.qry.mimetype = xstrdup(value);
258 } else if (!strcmp(name, "s")){
259 ctx.qry.sort = xstrdup(value);
260 } else if (!strcmp(name, "showmsg")) {
261 ctx.qry.showmsg = atoi(value);
262 } else if (!strcmp(name, "period")) {
263 ctx.qry.period = xstrdup(value);
264 } else if (!strcmp(name, "ss")) {
265 ctx.qry.ssdiff = atoi(value);
266 } else if (!strcmp(name, "all")) {
267 ctx.qry.show_all = atoi(value);
268 } else if (!strcmp(name, "context")) {
269 ctx.qry.context = atoi(value);
270 } else if (!strcmp(name, "ignorews")) {
271 ctx.qry.ignorews = atoi(value);
272 }
273}
274
275char *xstrdupn(const char *str)
276{
277 return (str ? xstrdup(str) : NULL);
278}
279
280static void prepare_context(struct cgit_context *ctx)
281{
282 memset(ctx, 0, sizeof(*ctx));
283 ctx->cfg.agefile = "info/web/last-modified";
284 ctx->cfg.nocache = 0;
285 ctx->cfg.cache_size = 0;
286 ctx->cfg.cache_dynamic_ttl = 5;
287 ctx->cfg.cache_max_create_time = 5;
288 ctx->cfg.cache_repo_ttl = 5;
289 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
290 ctx->cfg.cache_root_ttl = 5;
291 ctx->cfg.cache_scanrc_ttl = 15;
292 ctx->cfg.cache_static_ttl = -1;
293 ctx->cfg.css = "/cgit.css";
294 ctx->cfg.logo = "/cgit.png";
295 ctx->cfg.local_time = 0;
296 ctx->cfg.enable_tree_linenumbers = 1;
297 ctx->cfg.max_repo_count = 50;
298 ctx->cfg.max_commit_count = 50;
299 ctx->cfg.max_lock_attempts = 5;
300 ctx->cfg.max_msg_len = 80;
301 ctx->cfg.max_repodesc_len = 80;
302 ctx->cfg.max_blob_size = 0;
303 ctx->cfg.max_stats = 0;
304 ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
305 ctx->cfg.project_list = NULL;
306 ctx->cfg.renamelimit = -1;
307 ctx->cfg.remove_suffix = 0;
308 ctx->cfg.robots = "index, nofollow";
309 ctx->cfg.root_title = "Git repository browser";
310 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
311 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
312 ctx->cfg.section = "";
313 ctx->cfg.summary_branches = 10;
314 ctx->cfg.summary_log = 10;
315 ctx->cfg.summary_tags = 10;
316 ctx->cfg.max_atom_items = 10;
317 ctx->cfg.ssdiff = 0;
318 ctx->env.cgit_config = xstrdupn(getenv("CGIT_CONFIG"));
319 ctx->env.http_host = xstrdupn(getenv("HTTP_HOST"));
320 ctx->env.https = xstrdupn(getenv("HTTPS"));
321 ctx->env.no_http = xstrdupn(getenv("NO_HTTP"));
322 ctx->env.path_info = xstrdupn(getenv("PATH_INFO"));
323 ctx->env.query_string = xstrdupn(getenv("QUERY_STRING"));
324 ctx->env.request_method = xstrdupn(getenv("REQUEST_METHOD"));
325 ctx->env.script_name = xstrdupn(getenv("SCRIPT_NAME"));
326 ctx->env.server_name = xstrdupn(getenv("SERVER_NAME"));
327 ctx->env.server_port = xstrdupn(getenv("SERVER_PORT"));
328 ctx->page.mimetype = "text/html";
329 ctx->page.charset = PAGE_ENCODING;
330 ctx->page.filename = NULL;
331 ctx->page.size = 0;
332 ctx->page.modified = time(NULL);
333 ctx->page.expires = ctx->page.modified;
334 ctx->page.etag = NULL;
335 memset(&ctx->cfg.mimetypes, 0, sizeof(struct string_list));
336 if (ctx->env.script_name)
337 ctx->cfg.script_name = ctx->env.script_name;
338 if (ctx->env.query_string)
339 ctx->qry.raw = ctx->env.query_string;
340 if (!ctx->env.cgit_config)
341 ctx->env.cgit_config = CGIT_CONFIG;
342}
343
344struct refmatch {
345 char *req_ref;
346 char *first_ref;
347 int match;
348};
349
350int find_current_ref(const char *refname, const unsigned char *sha1,
351 int flags, void *cb_data)
352{
353 struct refmatch *info;
354
355 info = (struct refmatch *)cb_data;
356 if (!strcmp(refname, info->req_ref))
357 info->match = 1;
358 if (!info->first_ref)
359 info->first_ref = xstrdup(refname);
360 return info->match;
361}
362
363char *find_default_branch(struct cgit_repo *repo)
364{
365 struct refmatch info;
366 char *ref;
367
368 info.req_ref = repo->defbranch;
369 info.first_ref = NULL;
370 info.match = 0;
371 for_each_branch_ref(find_current_ref, &info);
372 if (info.match)
373 ref = info.req_ref;
374 else
375 ref = info.first_ref;
376 if (ref)
377 ref = xstrdup(ref);
378 return ref;
379}
380
381static int prepare_repo_cmd(struct cgit_context *ctx)
382{
383 char *tmp;
384 unsigned char sha1[20];
385 int nongit = 0;
386
387 setenv("GIT_DIR", ctx->repo->path, 1);
388 setup_git_directory_gently(&nongit);
389 if (nongit) {
390 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
391 "config error");
392 tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
393 ctx->repo = NULL;
394 cgit_print_http_headers(ctx);
395 cgit_print_docstart(ctx);
396 cgit_print_pageheader(ctx);
397 cgit_print_error(tmp);
398 cgit_print_docend();
399 return 1;
400 }
401 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
402
403 if (!ctx->qry.head) {
404 ctx->qry.nohead = 1;
405 ctx->qry.head = find_default_branch(ctx->repo);
406 ctx->repo->defbranch = ctx->qry.head;
407 }
408
409 if (!ctx->qry.head) {
410 cgit_print_http_headers(ctx);
411 cgit_print_docstart(ctx);
412 cgit_print_pageheader(ctx);
413 cgit_print_error("Repository seems to be empty");
414 cgit_print_docend();
415 return 1;
416 }
417
418 if (get_sha1(ctx->qry.head, sha1)) {
419 tmp = xstrdup(ctx->qry.head);
420 ctx->qry.head = ctx->repo->defbranch;
421 ctx->page.status = 404;
422 ctx->page.statusmsg = "not found";
423 cgit_print_http_headers(ctx);
424 cgit_print_docstart(ctx);
425 cgit_print_pageheader(ctx);
426 cgit_print_error(fmt("Invalid branch: %s", tmp));
427 cgit_print_docend();
428 return 1;
429 }
430 return 0;
431}
432
433static void process_request(void *cbdata)
434{
435 struct cgit_context *ctx = cbdata;
436 struct cgit_cmd *cmd;
437
438 cmd = cgit_get_cmd(ctx);
439 if (!cmd) {
440 ctx->page.title = "cgit error";
441 cgit_print_http_headers(ctx);
442 cgit_print_docstart(ctx);
443 cgit_print_pageheader(ctx);
444 cgit_print_error("Invalid request");
445 cgit_print_docend();
446 return;
447 }
448
449 /* If cmd->want_vpath is set, assume ctx->qry.path contains a "virtual"
450 * in-project path limit to be made available at ctx->qry.vpath.
451 * Otherwise, no path limit is in effect (ctx->qry.vpath = NULL).
452 */
453 ctx->qry.vpath = cmd->want_vpath ? ctx->qry.path : NULL;
454
455 if (cmd->want_repo && !ctx->repo) {
456 cgit_print_http_headers(ctx);
457 cgit_print_docstart(ctx);
458 cgit_print_pageheader(ctx);
459 cgit_print_error(fmt("No repository selected"));
460 cgit_print_docend();
461 return;
462 }
463
464 if (ctx->repo && prepare_repo_cmd(ctx))
465 return;
466
467 if (cmd->want_layout) {
468 cgit_print_http_headers(ctx);
469 cgit_print_docstart(ctx);
470 cgit_print_pageheader(ctx);
471 }
472
473 cmd->fn(ctx);
474
475 if (cmd->want_layout)
476 cgit_print_docend();
477}
478
479int cmp_repos(const void *a, const void *b)
480{
481 const struct cgit_repo *ra = a, *rb = b;
482 return strcmp(ra->url, rb->url);
483}
484
485char *build_snapshot_setting(int bitmap)
486{
487 const struct cgit_snapshot_format *f;
488 char *result = xstrdup("");
489 char *tmp;
490 int len;
491
492 for (f = cgit_snapshot_formats; f->suffix; f++) {
493 if (f->bit & bitmap) {
494 tmp = result;
495 result = xstrdup(fmt("%s%s ", tmp, f->suffix));
496 free(tmp);
497 }
498 }
499 len = strlen(result);
500 if (len)
501 result[len - 1] = '\0';
502 return result;
503}
504
505char *get_first_line(char *txt)
506{
507 char *t = xstrdup(txt);
508 char *p = strchr(t, '\n');
509 if (p)
510 *p = '\0';
511 return t;
512}
513
514void print_repo(FILE *f, struct cgit_repo *repo)
515{
516 fprintf(f, "repo.url=%s\n", repo->url);
517 fprintf(f, "repo.name=%s\n", repo->name);
518 fprintf(f, "repo.path=%s\n", repo->path);
519 if (repo->owner)
520 fprintf(f, "repo.owner=%s\n", repo->owner);
521 if (repo->desc) {
522 char *tmp = get_first_line(repo->desc);
523 fprintf(f, "repo.desc=%s\n", tmp);
524 free(tmp);
525 }
526 if (repo->readme)
527 fprintf(f, "repo.readme=%s\n", repo->readme);
528 if (repo->defbranch)
529 fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
530 if (repo->module_link)
531 fprintf(f, "repo.module-link=%s\n", repo->module_link);
532 if (repo->section)
533 fprintf(f, "repo.section=%s\n", repo->section);
534 if (repo->clone_url)
535 fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
536 fprintf(f, "repo.enable-log-filecount=%d\n",
537 repo->enable_log_filecount);
538 fprintf(f, "repo.enable-log-linecount=%d\n",
539 repo->enable_log_linecount);
540 if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
541 fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
542 if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
543 fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
544 if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
545 fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
546 if (repo->snapshots != ctx.cfg.snapshots) {
547 char *tmp = build_snapshot_setting(repo->snapshots);
548 fprintf(f, "repo.snapshots=%s\n", tmp);
549 free(tmp);
550 }
551 if (repo->max_stats != ctx.cfg.max_stats)
552 fprintf(f, "repo.max-stats=%s\n",
553 cgit_find_stats_periodname(repo->max_stats));
554 fprintf(f, "\n");
555}
556
557void print_repolist(FILE *f, struct cgit_repolist *list, int start)
558{
559 int i;
560
561 for(i = start; i < list->count; i++)
562 print_repo(f, &list->repos[i]);
563}
564
565/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
566 * and return 0 on success.
567 */
568static int generate_cached_repolist(const char *path, const char *cached_rc)
569{
570 char *locked_rc;
571 int idx;
572 FILE *f;
573
574 locked_rc = xstrdup(fmt("%s.lock", cached_rc));
575 f = fopen(locked_rc, "wx");
576 if (!f) {
577 /* Inform about the error unless the lockfile already existed,
578 * since that only means we've got concurrent requests.
579 */
580 if (errno != EEXIST)
581 fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
582 locked_rc, strerror(errno), errno);
583 return errno;
584 }
585 idx = cgit_repolist.count;
586 if (ctx.cfg.project_list)
587 scan_projects(path, ctx.cfg.project_list, repo_config);
588 else
589 scan_tree(path, repo_config);
590 print_repolist(f, &cgit_repolist, idx);
591 if (rename(locked_rc, cached_rc))
592 fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
593 locked_rc, cached_rc, strerror(errno), errno);
594 fclose(f);
595 return 0;
596}
597
598static void process_cached_repolist(const char *path)
599{
600 struct stat st;
601 char *cached_rc;
602 time_t age;
603 unsigned long hash;
604
605 hash = hash_str(path);
606 if (ctx.cfg.project_list)
607 hash += hash_str(ctx.cfg.project_list);
608 cached_rc = xstrdup(fmt("%s/rc-%8x", ctx.cfg.cache_root, hash));
609
610 if (stat(cached_rc, &st)) {
611 /* Nothing is cached, we need to scan without forking. And
612 * if we fail to generate a cached repolist, we need to
613 * invoke scan_tree manually.
614 */
615 if (generate_cached_repolist(path, cached_rc)) {
616 if (ctx.cfg.project_list)
617 scan_projects(path, ctx.cfg.project_list,
618 repo_config);
619 else
620 scan_tree(path, repo_config);
621 }
622 return;
623 }
624
625 parse_configfile(cached_rc, config_cb);
626
627 /* If the cached configfile hasn't expired, lets exit now */
628 age = time(NULL) - st.st_mtime;
629 if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
630 return;
631
632 /* The cached repolist has been parsed, but it was old. So lets
633 * rescan the specified path and generate a new cached repolist
634 * in a child-process to avoid latency for the current request.
635 */
636 if (fork())
637 return;
638
639 exit(generate_cached_repolist(path, cached_rc));
640}
641
642static void cgit_parse_args(int argc, const char **argv)
643{
644 int i;
645 int scan = 0;
646
647 for (i = 1; i < argc; i++) {
648 if (!strncmp(argv[i], "--cache=", 8)) {
649 ctx.cfg.cache_root = xstrdup(argv[i]+8);
650 }
651 if (!strcmp(argv[i], "--nocache")) {
652 ctx.cfg.nocache = 1;
653 }
654 if (!strcmp(argv[i], "--nohttp")) {
655 ctx.env.no_http = "1";
656 }
657 if (!strncmp(argv[i], "--query=", 8)) {
658 ctx.qry.raw = xstrdup(argv[i]+8);
659 }
660 if (!strncmp(argv[i], "--repo=", 7)) {
661 ctx.qry.repo = xstrdup(argv[i]+7);
662 }
663 if (!strncmp(argv[i], "--page=", 7)) {
664 ctx.qry.page = xstrdup(argv[i]+7);
665 }
666 if (!strncmp(argv[i], "--head=", 7)) {
667 ctx.qry.head = xstrdup(argv[i]+7);
668 ctx.qry.has_symref = 1;
669 }
670 if (!strncmp(argv[i], "--sha1=", 7)) {
671 ctx.qry.sha1 = xstrdup(argv[i]+7);
672 ctx.qry.has_sha1 = 1;
673 }
674 if (!strncmp(argv[i], "--ofs=", 6)) {
675 ctx.qry.ofs = atoi(argv[i]+6);
676 }
677 if (!strncmp(argv[i], "--scan-tree=", 12) ||
678 !strncmp(argv[i], "--scan-path=", 12)) {
679 /* HACK: the global snapshot bitmask defines the
680 * set of allowed snapshot formats, but the config
681 * file hasn't been parsed yet so the mask is
682 * currently 0. By setting all bits high before
683 * scanning we make sure that any in-repo cgitrc
684 * snapshot setting is respected by scan_tree().
685 * BTW: we assume that there'll never be more than
686 * 255 different snapshot formats supported by cgit...
687 */
688 ctx.cfg.snapshots = 0xFF;
689 scan++;
690 scan_tree(argv[i] + 12, repo_config);
691 }
692 }
693 if (scan) {
694 qsort(cgit_repolist.repos, cgit_repolist.count,
695 sizeof(struct cgit_repo), cmp_repos);
696 print_repolist(stdout, &cgit_repolist, 0);
697 exit(0);
698 }
699}
700
701static int calc_ttl()
702{
703 if (!ctx.repo)
704 return ctx.cfg.cache_root_ttl;
705
706 if (!ctx.qry.page)
707 return ctx.cfg.cache_repo_ttl;
708
709 if (ctx.qry.has_symref)
710 return ctx.cfg.cache_dynamic_ttl;
711
712 if (ctx.qry.has_sha1)
713 return ctx.cfg.cache_static_ttl;
714
715 return ctx.cfg.cache_repo_ttl;
716}
717
718int main(int argc, const char **argv)
719{
720 const char *path;
721 char *qry;
722 int err, ttl;
723
724 prepare_context(&ctx);
725 cgit_repolist.length = 0;
726 cgit_repolist.count = 0;
727 cgit_repolist.repos = NULL;
728
729 cgit_parse_args(argc, argv);
730 parse_configfile(expand_macros(ctx.env.cgit_config), config_cb);
731 ctx.repo = NULL;
732 http_parse_querystring(ctx.qry.raw, querystring_cb);
733
734 /* If virtual-root isn't specified in cgitrc, lets pretend
735 * that virtual-root equals SCRIPT_NAME.
736 */
737 if (!ctx.cfg.virtual_root)
738 ctx.cfg.virtual_root = ctx.cfg.script_name;
739
740 /* If no url parameter is specified on the querystring, lets
741 * use PATH_INFO as url. This allows cgit to work with virtual
742 * urls without the need for rewriterules in the webserver (as
743 * long as PATH_INFO is included in the cache lookup key).
744 */
745 path = ctx.env.path_info;
746 if (!ctx.qry.url && path) {
747 if (path[0] == '/')
748 path++;
749 ctx.qry.url = xstrdup(path);
750 if (ctx.qry.raw) {
751 qry = ctx.qry.raw;
752 ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
753 free(qry);
754 } else
755 ctx.qry.raw = xstrdup(ctx.qry.url);
756 cgit_parse_url(ctx.qry.url);
757 }
758
759 ttl = calc_ttl();
760 ctx.page.expires += ttl*60;
761 if (ctx.env.request_method && !strcmp(ctx.env.request_method, "HEAD"))
762 ctx.cfg.nocache = 1;
763 if (ctx.cfg.nocache)
764 ctx.cfg.cache_size = 0;
765 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
766 ctx.qry.raw, ttl, process_request, &ctx);
767 if (err)
768 cgit_print_error(fmt("Error processing page: %s (%d)",
769 strerror(err), err));
770 return err;
771}