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 "scan-tree.h"
16
17const char *cgit_version = CGIT_VERSION;
18
19void config_cb(const char *name, const char *value)
20{
21 if (!strcmp(name, "root-title"))
22 ctx.cfg.root_title = xstrdup(value);
23 else if (!strcmp(name, "root-desc"))
24 ctx.cfg.root_desc = xstrdup(value);
25 else if (!strcmp(name, "root-readme"))
26 ctx.cfg.root_readme = xstrdup(value);
27 else if (!strcmp(name, "css"))
28 ctx.cfg.css = xstrdup(value);
29 else if (!strcmp(name, "favicon"))
30 ctx.cfg.favicon = xstrdup(value);
31 else if (!strcmp(name, "footer"))
32 ctx.cfg.footer = xstrdup(value);
33 else if (!strcmp(name, "logo"))
34 ctx.cfg.logo = xstrdup(value);
35 else if (!strcmp(name, "index-header"))
36 ctx.cfg.index_header = xstrdup(value);
37 else if (!strcmp(name, "index-info"))
38 ctx.cfg.index_info = xstrdup(value);
39 else if (!strcmp(name, "logo-link"))
40 ctx.cfg.logo_link = xstrdup(value);
41 else if (!strcmp(name, "module-link"))
42 ctx.cfg.module_link = xstrdup(value);
43 else if (!strcmp(name, "virtual-root")) {
44 ctx.cfg.virtual_root = trim_end(value, '/');
45 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
46 ctx.cfg.virtual_root = "";
47 } else if (!strcmp(name, "nocache"))
48 ctx.cfg.nocache = atoi(value);
49 else if (!strcmp(name, "snapshots"))
50 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
51 else if (!strcmp(name, "enable-index-links"))
52 ctx.cfg.enable_index_links = atoi(value);
53 else if (!strcmp(name, "enable-log-filecount"))
54 ctx.cfg.enable_log_filecount = atoi(value);
55 else if (!strcmp(name, "enable-log-linecount"))
56 ctx.cfg.enable_log_linecount = atoi(value);
57 else if (!strcmp(name, "enable-stats"))
58 ctx.cfg.enable_stats = atoi(value);
59 else if (!strcmp(name, "cache-size"))
60 ctx.cfg.cache_size = atoi(value);
61 else if (!strcmp(name, "cache-root"))
62 ctx.cfg.cache_root = xstrdup(value);
63 else if (!strcmp(name, "cache-root-ttl"))
64 ctx.cfg.cache_root_ttl = atoi(value);
65 else if (!strcmp(name, "cache-repo-ttl"))
66 ctx.cfg.cache_repo_ttl = atoi(value);
67 else if (!strcmp(name, "cache-static-ttl"))
68 ctx.cfg.cache_static_ttl = atoi(value);
69 else if (!strcmp(name, "cache-dynamic-ttl"))
70 ctx.cfg.cache_dynamic_ttl = atoi(value);
71 else if (!strcmp(name, "max-message-length"))
72 ctx.cfg.max_msg_len = atoi(value);
73 else if (!strcmp(name, "max-repodesc-length"))
74 ctx.cfg.max_repodesc_len = atoi(value);
75 else if (!strcmp(name, "max-repo-count"))
76 ctx.cfg.max_repo_count = atoi(value);
77 else if (!strcmp(name, "max-commit-count"))
78 ctx.cfg.max_commit_count = atoi(value);
79 else if (!strcmp(name, "summary-log"))
80 ctx.cfg.summary_log = atoi(value);
81 else if (!strcmp(name, "summary-branches"))
82 ctx.cfg.summary_branches = atoi(value);
83 else if (!strcmp(name, "summary-tags"))
84 ctx.cfg.summary_tags = atoi(value);
85 else if (!strcmp(name, "agefile"))
86 ctx.cfg.agefile = xstrdup(value);
87 else if (!strcmp(name, "renamelimit"))
88 ctx.cfg.renamelimit = atoi(value);
89 else if (!strcmp(name, "robots"))
90 ctx.cfg.robots = xstrdup(value);
91 else if (!strcmp(name, "clone-prefix"))
92 ctx.cfg.clone_prefix = xstrdup(value);
93 else if (!strcmp(name, "local-time"))
94 ctx.cfg.local_time = atoi(value);
95 else if (!strcmp(name, "repo.group"))
96 ctx.cfg.repo_group = xstrdup(value);
97 else if (!strcmp(name, "repo.url"))
98 ctx.repo = cgit_add_repo(value);
99 else if (!strcmp(name, "repo.name"))
100 ctx.repo->name = xstrdup(value);
101 else if (ctx.repo && !strcmp(name, "repo.path"))
102 ctx.repo->path = trim_end(value, '/');
103 else if (ctx.repo && !strcmp(name, "repo.clone-url"))
104 ctx.repo->clone_url = xstrdup(value);
105 else if (ctx.repo && !strcmp(name, "repo.desc"))
106 ctx.repo->desc = xstrdup(value);
107 else if (ctx.repo && !strcmp(name, "repo.owner"))
108 ctx.repo->owner = xstrdup(value);
109 else if (ctx.repo && !strcmp(name, "repo.defbranch"))
110 ctx.repo->defbranch = xstrdup(value);
111 else if (ctx.repo && !strcmp(name, "repo.snapshots"))
112 ctx.repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
113 else if (ctx.repo && !strcmp(name, "repo.enable-log-filecount"))
114 ctx.repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
115 else if (ctx.repo && !strcmp(name, "repo.enable-log-linecount"))
116 ctx.repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
117 else if (ctx.repo && !strcmp(name, "repo.enable-stats"))
118 ctx.repo->enable_stats = ctx.cfg.enable_stats && atoi(value);
119 else if (ctx.repo && !strcmp(name, "repo.module-link"))
120 ctx.repo->module_link= xstrdup(value);
121 else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
122 if (*value == '/')
123 ctx.repo->readme = xstrdup(value);
124 else
125 ctx.repo->readme = xstrdup(fmt("%s/%s", ctx.repo->path, value));
126 } else if (!strcmp(name, "include"))
127 parse_configfile(value, config_cb);
128}
129
130static void querystring_cb(const char *name, const char *value)
131{
132 if (!strcmp(name,"r")) {
133 ctx.qry.repo = xstrdup(value);
134 ctx.repo = cgit_get_repoinfo(value);
135 } else if (!strcmp(name, "p")) {
136 ctx.qry.page = xstrdup(value);
137 } else if (!strcmp(name, "url")) {
138 ctx.qry.url = xstrdup(value);
139 cgit_parse_url(value);
140 } else if (!strcmp(name, "qt")) {
141 ctx.qry.grep = xstrdup(value);
142 } else if (!strcmp(name, "q")) {
143 ctx.qry.search = xstrdup(value);
144 } else if (!strcmp(name, "h")) {
145 ctx.qry.head = xstrdup(value);
146 ctx.qry.has_symref = 1;
147 } else if (!strcmp(name, "id")) {
148 ctx.qry.sha1 = xstrdup(value);
149 ctx.qry.has_sha1 = 1;
150 } else if (!strcmp(name, "id2")) {
151 ctx.qry.sha2 = xstrdup(value);
152 ctx.qry.has_sha1 = 1;
153 } else if (!strcmp(name, "ofs")) {
154 ctx.qry.ofs = atoi(value);
155 } else if (!strcmp(name, "path")) {
156 ctx.qry.path = trim_end(value, '/');
157 } else if (!strcmp(name, "name")) {
158 ctx.qry.name = xstrdup(value);
159 } else if (!strcmp(name, "mimetype")) {
160 ctx.qry.mimetype = xstrdup(value);
161 } else if (!strcmp(name, "period")) {
162 ctx.qry.period = xstrdup(value);
163 }
164}
165
166static void prepare_context(struct cgit_context *ctx)
167{
168 memset(ctx, 0, sizeof(ctx));
169 ctx->cfg.agefile = "info/web/last-modified";
170 ctx->cfg.nocache = 0;
171 ctx->cfg.cache_size = 0;
172 ctx->cfg.cache_dynamic_ttl = 5;
173 ctx->cfg.cache_max_create_time = 5;
174 ctx->cfg.cache_repo_ttl = 5;
175 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
176 ctx->cfg.cache_root_ttl = 5;
177 ctx->cfg.cache_static_ttl = -1;
178 ctx->cfg.css = "/cgit.css";
179 ctx->cfg.logo = "/git-logo.png";
180 ctx->cfg.local_time = 0;
181 ctx->cfg.max_repo_count = 50;
182 ctx->cfg.max_commit_count = 50;
183 ctx->cfg.max_lock_attempts = 5;
184 ctx->cfg.max_msg_len = 80;
185 ctx->cfg.max_repodesc_len = 80;
186 ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
187 ctx->cfg.renamelimit = -1;
188 ctx->cfg.robots = "index, nofollow";
189 ctx->cfg.root_title = "Git repository browser";
190 ctx->cfg.root_desc = "a fast webinterface for the git dscm";
191 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
192 ctx->cfg.summary_branches = 10;
193 ctx->cfg.summary_log = 10;
194 ctx->cfg.summary_tags = 10;
195 ctx->page.mimetype = "text/html";
196 ctx->page.charset = PAGE_ENCODING;
197 ctx->page.filename = NULL;
198 ctx->page.size = 0;
199 ctx->page.modified = time(NULL);
200 ctx->page.expires = ctx->page.modified;
201}
202
203struct refmatch {
204 char *req_ref;
205 char *first_ref;
206 int match;
207};
208
209int find_current_ref(const char *refname, const unsigned char *sha1,
210 int flags, void *cb_data)
211{
212 struct refmatch *info;
213
214 info = (struct refmatch *)cb_data;
215 if (!strcmp(refname, info->req_ref))
216 info->match = 1;
217 if (!info->first_ref)
218 info->first_ref = xstrdup(refname);
219 return info->match;
220}
221
222char *find_default_branch(struct cgit_repo *repo)
223{
224 struct refmatch info;
225 char *ref;
226
227 info.req_ref = repo->defbranch;
228 info.first_ref = NULL;
229 info.match = 0;
230 for_each_branch_ref(find_current_ref, &info);
231 if (info.match)
232 ref = info.req_ref;
233 else
234 ref = info.first_ref;
235 if (ref)
236 ref = xstrdup(ref);
237 return ref;
238}
239
240static int prepare_repo_cmd(struct cgit_context *ctx)
241{
242 char *tmp;
243 unsigned char sha1[20];
244 int nongit = 0;
245
246 setenv("GIT_DIR", ctx->repo->path, 1);
247 setup_git_directory_gently(&nongit);
248 if (nongit) {
249 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
250 "config error");
251 tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
252 ctx->repo = NULL;
253 cgit_print_http_headers(ctx);
254 cgit_print_docstart(ctx);
255 cgit_print_pageheader(ctx);
256 cgit_print_error(tmp);
257 cgit_print_docend();
258 return 1;
259 }
260 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
261
262 if (!ctx->qry.head) {
263 ctx->qry.nohead = 1;
264 ctx->qry.head = find_default_branch(ctx->repo);
265 ctx->repo->defbranch = ctx->qry.head;
266 }
267
268 if (!ctx->qry.head) {
269 cgit_print_http_headers(ctx);
270 cgit_print_docstart(ctx);
271 cgit_print_pageheader(ctx);
272 cgit_print_error("Repository seems to be empty");
273 cgit_print_docend();
274 return 1;
275 }
276
277 if (get_sha1(ctx->qry.head, sha1)) {
278 tmp = xstrdup(ctx->qry.head);
279 ctx->qry.head = ctx->repo->defbranch;
280 cgit_print_http_headers(ctx);
281 cgit_print_docstart(ctx);
282 cgit_print_pageheader(ctx);
283 cgit_print_error(fmt("Invalid branch: %s", tmp));
284 cgit_print_docend();
285 return 1;
286 }
287 return 0;
288}
289
290static void process_request(void *cbdata)
291{
292 struct cgit_context *ctx = cbdata;
293 struct cgit_cmd *cmd;
294
295 cmd = cgit_get_cmd(ctx);
296 if (!cmd) {
297 ctx->page.title = "cgit error";
298 ctx->repo = NULL;
299 cgit_print_http_headers(ctx);
300 cgit_print_docstart(ctx);
301 cgit_print_pageheader(ctx);
302 cgit_print_error("Invalid request");
303 cgit_print_docend();
304 return;
305 }
306
307 if (cmd->want_repo && !ctx->repo) {
308 cgit_print_http_headers(ctx);
309 cgit_print_docstart(ctx);
310 cgit_print_pageheader(ctx);
311 cgit_print_error(fmt("No repository selected"));
312 cgit_print_docend();
313 return;
314 }
315
316 if (ctx->repo && prepare_repo_cmd(ctx))
317 return;
318
319 if (cmd->want_layout) {
320 cgit_print_http_headers(ctx);
321 cgit_print_docstart(ctx);
322 cgit_print_pageheader(ctx);
323 }
324
325 cmd->fn(ctx);
326
327 if (cmd->want_layout)
328 cgit_print_docend();
329}
330
331int cmp_repos(const void *a, const void *b)
332{
333 const struct cgit_repo *ra = a, *rb = b;
334 return strcmp(ra->url, rb->url);
335}
336
337void print_repo(struct cgit_repo *repo)
338{
339 printf("repo.url=%s\n", repo->url);
340 printf("repo.name=%s\n", repo->name);
341 printf("repo.path=%s\n", repo->path);
342 if (repo->owner)
343 printf("repo.owner=%s\n", repo->owner);
344 if (repo->desc)
345 printf("repo.desc=%s\n", repo->desc);
346 if (repo->readme)
347 printf("repo.readme=%s\n", repo->readme);
348 printf("\n");
349}
350
351void print_repolist(struct cgit_repolist *list)
352{
353 int i;
354
355 for(i = 0; i < list->count; i++)
356 print_repo(&list->repos[i]);
357}
358
359
360static void cgit_parse_args(int argc, const char **argv)
361{
362 int i;
363 int scan = 0;
364
365 for (i = 1; i < argc; i++) {
366 if (!strncmp(argv[i], "--cache=", 8)) {
367 ctx.cfg.cache_root = xstrdup(argv[i]+8);
368 }
369 if (!strcmp(argv[i], "--nocache")) {
370 ctx.cfg.nocache = 1;
371 }
372 if (!strncmp(argv[i], "--query=", 8)) {
373 ctx.qry.raw = xstrdup(argv[i]+8);
374 }
375 if (!strncmp(argv[i], "--repo=", 7)) {
376 ctx.qry.repo = xstrdup(argv[i]+7);
377 }
378 if (!strncmp(argv[i], "--page=", 7)) {
379 ctx.qry.page = xstrdup(argv[i]+7);
380 }
381 if (!strncmp(argv[i], "--head=", 7)) {
382 ctx.qry.head = xstrdup(argv[i]+7);
383 ctx.qry.has_symref = 1;
384 }
385 if (!strncmp(argv[i], "--sha1=", 7)) {
386 ctx.qry.sha1 = xstrdup(argv[i]+7);
387 ctx.qry.has_sha1 = 1;
388 }
389 if (!strncmp(argv[i], "--ofs=", 6)) {
390 ctx.qry.ofs = atoi(argv[i]+6);
391 }
392 if (!strncmp(argv[i], "--scan-tree=", 12)) {
393 scan++;
394 scan_tree(argv[i] + 12);
395 }
396 }
397 if (scan) {
398 qsort(cgit_repolist.repos, cgit_repolist.count,
399 sizeof(struct cgit_repo), cmp_repos);
400 print_repolist(&cgit_repolist);
401 exit(0);
402 }
403}
404
405static int calc_ttl()
406{
407 if (!ctx.repo)
408 return ctx.cfg.cache_root_ttl;
409
410 if (!ctx.qry.page)
411 return ctx.cfg.cache_repo_ttl;
412
413 if (ctx.qry.has_symref)
414 return ctx.cfg.cache_dynamic_ttl;
415
416 if (ctx.qry.has_sha1)
417 return ctx.cfg.cache_static_ttl;
418
419 return ctx.cfg.cache_repo_ttl;
420}
421
422int main(int argc, const char **argv)
423{
424 const char *cgit_config_env = getenv("CGIT_CONFIG");
425 const char *path;
426 char *qry;
427 int err, ttl;
428
429 prepare_context(&ctx);
430 cgit_repolist.length = 0;
431 cgit_repolist.count = 0;
432 cgit_repolist.repos = NULL;
433
434 if (getenv("SCRIPT_NAME"))
435 ctx.cfg.script_name = xstrdup(getenv("SCRIPT_NAME"));
436 if (getenv("QUERY_STRING"))
437 ctx.qry.raw = xstrdup(getenv("QUERY_STRING"));
438 cgit_parse_args(argc, argv);
439 parse_configfile(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
440 config_cb);
441 ctx.repo = NULL;
442 http_parse_querystring(ctx.qry.raw, querystring_cb);
443
444 /* If virtual-root isn't specified in cgitrc and no url
445 * parameter is specified on the querystring, lets pretend
446 * that virtualroot equals SCRIPT_NAME and use PATH_INFO as
447 * url. This allows cgit to work with virtual urls without
448 * the need for rewriterules in the webserver (as long as
449 * PATH_INFO is included in the cache lookup key).
450 */
451 if (!ctx.cfg.virtual_root && !ctx.qry.url) {
452 ctx.cfg.virtual_root = ctx.cfg.script_name;
453 path = getenv("PATH_INFO");
454 if (path) {
455 if (path[0] == '/')
456 path++;
457 ctx.qry.url = xstrdup(path);
458 if (ctx.qry.raw) {
459 qry = ctx.qry.raw;
460 ctx.qry.raw = xstrdup(fmt("%s?%s", path, qry));
461 free(qry);
462 } else
463 ctx.qry.raw = ctx.qry.url;
464 cgit_parse_url(ctx.qry.url);
465 }
466 }
467
468 ttl = calc_ttl();
469 ctx.page.expires += ttl*60;
470 if (ctx.cfg.nocache)
471 ctx.cfg.cache_size = 0;
472 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
473 ctx.qry.raw, ttl, process_request, &ctx);
474 if (err)
475 cgit_print_error(fmt("Error processing page: %s (%d)",
476 strerror(err), err));
477 return err;
478}