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