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