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