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