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