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