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