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