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.modified = time(NULL);
191 ctx->page.expires = ctx->page.modified;
192}
193
194struct refmatch {
195 char *req_ref;
196 char *first_ref;
197 int match;
198};
199
200int find_current_ref(const char *refname, const unsigned char *sha1,
201 int flags, void *cb_data)
202{
203 struct refmatch *info;
204
205 info = (struct refmatch *)cb_data;
206 if (!strcmp(refname, info->req_ref))
207 info->match = 1;
208 if (!info->first_ref)
209 info->first_ref = xstrdup(refname);
210 return info->match;
211}
212
213char *find_default_branch(struct cgit_repo *repo)
214{
215 struct refmatch info;
216 char *ref;
217
218 info.req_ref = repo->defbranch;
219 info.first_ref = NULL;
220 info.match = 0;
221 for_each_branch_ref(find_current_ref, &info);
222 if (info.match)
223 ref = info.req_ref;
224 else
225 ref = info.first_ref;
226 if (ref)
227 ref = xstrdup(ref);
228 return ref;
229}
230
231static int prepare_repo_cmd(struct cgit_context *ctx)
232{
233 char *tmp;
234 unsigned char sha1[20];
235 int nongit = 0;
236
237 setenv("GIT_DIR", ctx->repo->path, 1);
238 setup_git_directory_gently(&nongit);
239 if (nongit) {
240 ctx->page.title = fmt("%s - %s", ctx->cfg.root_title,
241 "config error");
242 tmp = fmt("Not a git repository: '%s'", ctx->repo->path);
243 ctx->repo = NULL;
244 cgit_print_http_headers(ctx);
245 cgit_print_docstart(ctx);
246 cgit_print_pageheader(ctx);
247 cgit_print_error(tmp);
248 cgit_print_docend();
249 return 1;
250 }
251 ctx->page.title = fmt("%s - %s", ctx->repo->name, ctx->repo->desc);
252
253 if (!ctx->qry.head) {
254 ctx->qry.head = find_default_branch(ctx->repo);
255 ctx->repo->defbranch = ctx->qry.head;
256 }
257
258 if (!ctx->qry.head) {
259 cgit_print_http_headers(ctx);
260 cgit_print_docstart(ctx);
261 cgit_print_pageheader(ctx);
262 cgit_print_error("Repository seems to be empty");
263 cgit_print_docend();
264 return 1;
265 }
266
267 if (get_sha1(ctx->qry.head, sha1)) {
268 tmp = xstrdup(ctx->qry.head);
269 ctx->qry.head = ctx->repo->defbranch;
270 cgit_print_http_headers(ctx);
271 cgit_print_docstart(ctx);
272 cgit_print_pageheader(ctx);
273 cgit_print_error(fmt("Invalid branch: %s", tmp));
274 cgit_print_docend();
275 return 1;
276 }
277 return 0;
278}
279
280static void process_request(void *cbdata)
281{
282 struct cgit_context *ctx = cbdata;
283 struct cgit_cmd *cmd;
284
285 cmd = cgit_get_cmd(ctx);
286 if (!cmd) {
287 ctx->page.title = "cgit error";
288 ctx->repo = NULL;
289 cgit_print_http_headers(ctx);
290 cgit_print_docstart(ctx);
291 cgit_print_pageheader(ctx);
292 cgit_print_error("Invalid request");
293 cgit_print_docend();
294 return;
295 }
296
297 if (cmd->want_repo && !ctx->repo) {
298 cgit_print_http_headers(ctx);
299 cgit_print_docstart(ctx);
300 cgit_print_pageheader(ctx);
301 cgit_print_error(fmt("No repository selected"));
302 cgit_print_docend();
303 return;
304 }
305
306 if (ctx->repo && prepare_repo_cmd(ctx))
307 return;
308
309 if (cmd->want_layout) {
310 cgit_print_http_headers(ctx);
311 cgit_print_docstart(ctx);
312 cgit_print_pageheader(ctx);
313 }
314
315 cmd->fn(ctx);
316
317 if (cmd->want_layout)
318 cgit_print_docend();
319}
320
321static void cgit_parse_args(int argc, const char **argv)
322{
323 int i;
324
325 for (i = 1; i < argc; i++) {
326 if (!strncmp(argv[i], "--cache=", 8)) {
327 ctx.cfg.cache_root = xstrdup(argv[i]+8);
328 }
329 if (!strcmp(argv[i], "--nocache")) {
330 ctx.cfg.nocache = 1;
331 }
332 if (!strncmp(argv[i], "--query=", 8)) {
333 ctx.qry.raw = xstrdup(argv[i]+8);
334 }
335 if (!strncmp(argv[i], "--repo=", 7)) {
336 ctx.qry.repo = xstrdup(argv[i]+7);
337 }
338 if (!strncmp(argv[i], "--page=", 7)) {
339 ctx.qry.page = xstrdup(argv[i]+7);
340 }
341 if (!strncmp(argv[i], "--head=", 7)) {
342 ctx.qry.head = xstrdup(argv[i]+7);
343 ctx.qry.has_symref = 1;
344 }
345 if (!strncmp(argv[i], "--sha1=", 7)) {
346 ctx.qry.sha1 = xstrdup(argv[i]+7);
347 ctx.qry.has_sha1 = 1;
348 }
349 if (!strncmp(argv[i], "--ofs=", 6)) {
350 ctx.qry.ofs = atoi(argv[i]+6);
351 }
352 }
353}
354
355static int calc_ttl()
356{
357 if (!ctx.repo)
358 return ctx.cfg.cache_root_ttl;
359
360 if (!ctx.qry.page)
361 return ctx.cfg.cache_repo_ttl;
362
363 if (ctx.qry.has_symref)
364 return ctx.cfg.cache_dynamic_ttl;
365
366 if (ctx.qry.has_sha1)
367 return ctx.cfg.cache_static_ttl;
368
369 return ctx.cfg.cache_repo_ttl;
370}
371
372int main(int argc, const char **argv)
373{
374 const char *cgit_config_env = getenv("CGIT_CONFIG");
375 int err, ttl;
376
377 prepare_context(&ctx);
378 cgit_repolist.length = 0;
379 cgit_repolist.count = 0;
380 cgit_repolist.repos = NULL;
381
382 parse_configfile(cgit_config_env ? cgit_config_env : CGIT_CONFIG,
383 config_cb);
384 ctx.repo = NULL;
385 if (getenv("SCRIPT_NAME"))
386 ctx.cfg.script_name = xstrdup(getenv("SCRIPT_NAME"));
387 if (getenv("QUERY_STRING"))
388 ctx.qry.raw = xstrdup(getenv("QUERY_STRING"));
389 cgit_parse_args(argc, argv);
390 http_parse_querystring(ctx.qry.raw, querystring_cb);
391
392 ttl = calc_ttl();
393 ctx.page.expires += ttl*60;
394 if (ctx.cfg.nocache)
395 ctx.cfg.cache_size = 0;
396 err = cache_process(ctx.cfg.cache_size, ctx.cfg.cache_root,
397 ctx.qry.raw, ttl, process_request, &ctx);
398 if (err)
399 cgit_print_error(fmt("Error processing page: %s (%d)",
400 strerror(err), err));
401 return err;
402}