shared.c (view raw)
1/* shared.c: global vars + some callback functions
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
11struct repolist cgit_repolist;
12struct repoinfo *cgit_repo;
13int cgit_cmd;
14
15char *cgit_root_title = "Git repository browser";
16char *cgit_css = "/cgit.css";
17char *cgit_logo = "/git-logo.png";
18char *cgit_index_header = NULL;
19char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
20char *cgit_module_link = "./?repo=%s&page=commit&id=%s";
21char *cgit_agefile = "info/web/last-modified";
22char *cgit_virtual_root = NULL;
23char *cgit_script_name = CGIT_SCRIPT_NAME;
24char *cgit_cache_root = "/var/cache/cgit";
25char *cgit_repo_group = NULL;
26
27int cgit_nocache = 0;
28int cgit_snapshots = 0;
29int cgit_enable_index_links = 0;
30int cgit_enable_log_filecount = 0;
31int cgit_enable_log_linecount = 0;
32int cgit_max_lock_attempts = 5;
33int cgit_cache_root_ttl = 5;
34int cgit_cache_repo_ttl = 5;
35int cgit_cache_dynamic_ttl = 5;
36int cgit_cache_static_ttl = -1;
37int cgit_cache_max_create_time = 5;
38int cgit_summary_log = 0;
39
40int cgit_max_msg_len = 60;
41int cgit_max_repodesc_len = 60;
42int cgit_max_commit_count = 50;
43
44int cgit_query_has_symref = 0;
45int cgit_query_has_sha1 = 0;
46
47char *cgit_querystring = NULL;
48char *cgit_query_repo = NULL;
49char *cgit_query_page = NULL;
50char *cgit_query_head = NULL;
51char *cgit_query_search = NULL;
52char *cgit_query_sha1 = NULL;
53char *cgit_query_sha2 = NULL;
54char *cgit_query_path = NULL;
55char *cgit_query_name = NULL;
56int cgit_query_ofs = 0;
57
58int htmlfd = 0;
59
60
61int cgit_get_cmd_index(const char *cmd)
62{
63 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
64 "snapshot", NULL};
65 int i;
66
67 for(i = 0; cmds[i]; i++)
68 if (!strcmp(cmd, cmds[i]))
69 return i + 1;
70 return 0;
71}
72
73int chk_zero(int result, char *msg)
74{
75 if (result != 0)
76 die("%s: %s", msg, strerror(errno));
77 return result;
78}
79
80int chk_positive(int result, char *msg)
81{
82 if (result <= 0)
83 die("%s: %s", msg, strerror(errno));
84 return result;
85}
86
87struct repoinfo *add_repo(const char *url)
88{
89 struct repoinfo *ret;
90
91 if (++cgit_repolist.count > cgit_repolist.length) {
92 if (cgit_repolist.length == 0)
93 cgit_repolist.length = 8;
94 else
95 cgit_repolist.length *= 2;
96 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
97 cgit_repolist.length *
98 sizeof(struct repoinfo));
99 }
100
101 ret = &cgit_repolist.repos[cgit_repolist.count-1];
102 ret->url = xstrdup(url);
103 ret->name = ret->url;
104 ret->path = NULL;
105 ret->desc = NULL;
106 ret->owner = NULL;
107 ret->group = cgit_repo_group;
108 ret->defbranch = "master";
109 ret->snapshots = cgit_snapshots;
110 ret->enable_log_filecount = cgit_enable_log_filecount;
111 ret->enable_log_linecount = cgit_enable_log_linecount;
112 ret->module_link = cgit_module_link;
113 ret->readme = NULL;
114 return ret;
115}
116
117struct repoinfo *cgit_get_repoinfo(const char *url)
118{
119 int i;
120 struct repoinfo *repo;
121
122 for (i=0; i<cgit_repolist.count; i++) {
123 repo = &cgit_repolist.repos[i];
124 if (!strcmp(repo->url, url))
125 return repo;
126 }
127 return NULL;
128}
129
130void cgit_global_config_cb(const char *name, const char *value)
131{
132 if (!strcmp(name, "root-title"))
133 cgit_root_title = xstrdup(value);
134 else if (!strcmp(name, "css"))
135 cgit_css = xstrdup(value);
136 else if (!strcmp(name, "logo"))
137 cgit_logo = xstrdup(value);
138 else if (!strcmp(name, "index-header"))
139 cgit_index_header = xstrdup(value);
140 else if (!strcmp(name, "logo-link"))
141 cgit_logo_link = xstrdup(value);
142 else if (!strcmp(name, "module-link"))
143 cgit_module_link = xstrdup(value);
144 else if (!strcmp(name, "virtual-root"))
145 cgit_virtual_root = xstrdup(value);
146 else if (!strcmp(name, "nocache"))
147 cgit_nocache = atoi(value);
148 else if (!strcmp(name, "snapshots"))
149 cgit_snapshots = atoi(value);
150 else if (!strcmp(name, "enable-index-links"))
151 cgit_enable_index_links = atoi(value);
152 else if (!strcmp(name, "enable-log-filecount"))
153 cgit_enable_log_filecount = atoi(value);
154 else if (!strcmp(name, "enable-log-linecount"))
155 cgit_enable_log_linecount = atoi(value);
156 else if (!strcmp(name, "cache-root"))
157 cgit_cache_root = xstrdup(value);
158 else if (!strcmp(name, "cache-root-ttl"))
159 cgit_cache_root_ttl = atoi(value);
160 else if (!strcmp(name, "cache-repo-ttl"))
161 cgit_cache_repo_ttl = atoi(value);
162 else if (!strcmp(name, "cache-static-ttl"))
163 cgit_cache_static_ttl = atoi(value);
164 else if (!strcmp(name, "cache-dynamic-ttl"))
165 cgit_cache_dynamic_ttl = atoi(value);
166 else if (!strcmp(name, "max-message-length"))
167 cgit_max_msg_len = atoi(value);
168 else if (!strcmp(name, "max-repodesc-length"))
169 cgit_max_repodesc_len = atoi(value);
170 else if (!strcmp(name, "max-commit-count"))
171 cgit_max_commit_count = atoi(value);
172 else if (!strcmp(name, "summary-log"))
173 cgit_summary_log = atoi(value);
174 else if (!strcmp(name, "agefile"))
175 cgit_agefile = xstrdup(value);
176 else if (!strcmp(name, "repo.group"))
177 cgit_repo_group = xstrdup(value);
178 else if (!strcmp(name, "repo.url"))
179 cgit_repo = add_repo(value);
180 else if (!strcmp(name, "repo.name"))
181 cgit_repo->name = xstrdup(value);
182 else if (cgit_repo && !strcmp(name, "repo.path"))
183 cgit_repo->path = xstrdup(value);
184 else if (cgit_repo && !strcmp(name, "repo.desc"))
185 cgit_repo->desc = xstrdup(value);
186 else if (cgit_repo && !strcmp(name, "repo.owner"))
187 cgit_repo->owner = xstrdup(value);
188 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
189 cgit_repo->defbranch = xstrdup(value);
190 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
191 cgit_repo->snapshots = cgit_snapshots * atoi(value);
192 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
193 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
194 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
195 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
196 else if (cgit_repo && !strcmp(name, "repo.module-link"))
197 cgit_repo->module_link= xstrdup(value);
198 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
199 if (*value == '/')
200 cgit_repo->readme = xstrdup(value);
201 else
202 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
203 } else if (!strcmp(name, "include"))
204 cgit_read_config(value, cgit_global_config_cb);
205}
206
207void cgit_querystring_cb(const char *name, const char *value)
208{
209 if (!strcmp(name,"r")) {
210 cgit_query_repo = xstrdup(value);
211 cgit_repo = cgit_get_repoinfo(value);
212 } else if (!strcmp(name, "p")) {
213 cgit_query_page = xstrdup(value);
214 cgit_cmd = cgit_get_cmd_index(value);
215 } else if (!strcmp(name, "url")) {
216 cgit_parse_url(value);
217 } else if (!strcmp(name, "q")) {
218 cgit_query_search = xstrdup(value);
219 } else if (!strcmp(name, "h")) {
220 cgit_query_head = xstrdup(value);
221 cgit_query_has_symref = 1;
222 } else if (!strcmp(name, "id")) {
223 cgit_query_sha1 = xstrdup(value);
224 cgit_query_has_sha1 = 1;
225 } else if (!strcmp(name, "id2")) {
226 cgit_query_sha2 = xstrdup(value);
227 cgit_query_has_sha1 = 1;
228 } else if (!strcmp(name, "ofs")) {
229 cgit_query_ofs = atoi(value);
230 } else if (!strcmp(name, "path")) {
231 cgit_query_path = xstrdup(value);
232 } else if (!strcmp(name, "name")) {
233 cgit_query_name = xstrdup(value);
234 }
235}
236
237void *cgit_free_commitinfo(struct commitinfo *info)
238{
239 free(info->author);
240 free(info->author_email);
241 free(info->committer);
242 free(info->committer_email);
243 free(info->subject);
244 free(info);
245 return NULL;
246}
247
248int hextoint(char c)
249{
250 if (c >= 'a' && c <= 'f')
251 return 10 + c - 'a';
252 else if (c >= 'A' && c <= 'F')
253 return 10 + c - 'A';
254 else if (c >= '0' && c <= '9')
255 return c - '0';
256 else
257 return -1;
258}
259
260void cgit_diff_tree_cb(struct diff_queue_struct *q,
261 struct diff_options *options, void *data)
262{
263 int i;
264
265 for (i = 0; i < q->nr; i++) {
266 if (q->queue[i]->status == 'U')
267 continue;
268 ((filepair_fn)data)(q->queue[i]);
269 }
270}
271
272static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
273{
274 enum object_type type;
275
276 if (is_null_sha1(sha1)) {
277 file->ptr = (char *)"";
278 file->size = 0;
279 } else {
280 file->ptr = read_sha1_file(sha1, &type, &file->size);
281 }
282 return 1;
283}
284
285/*
286 * Receive diff-buffers from xdiff and concatenate them as
287 * needed across multiple callbacks.
288 *
289 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
290 * ripped from git and modified to use globals instead of
291 * a special callback-struct.
292 */
293char *diffbuf = NULL;
294int buflen = 0;
295
296int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
297{
298 int i;
299
300 for (i = 0; i < nbuf; i++) {
301 if (mb[i].ptr[mb[i].size-1] != '\n') {
302 /* Incomplete line */
303 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
304 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
305 buflen += mb[i].size;
306 continue;
307 }
308
309 /* we have a complete line */
310 if (!diffbuf) {
311 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
312 continue;
313 }
314 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
315 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
316 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
317 free(diffbuf);
318 diffbuf = NULL;
319 buflen = 0;
320 }
321 if (diffbuf) {
322 ((linediff_fn)priv)(diffbuf, buflen);
323 free(diffbuf);
324 diffbuf = NULL;
325 buflen = 0;
326 }
327 return 0;
328}
329
330int cgit_diff_files(const unsigned char *old_sha1,
331 const unsigned char *new_sha1,
332 linediff_fn fn)
333{
334 mmfile_t file1, file2;
335 xpparam_t diff_params;
336 xdemitconf_t emit_params;
337 xdemitcb_t emit_cb;
338
339 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
340 return 1;
341
342 diff_params.flags = XDF_NEED_MINIMAL;
343 emit_params.ctxlen = 3;
344 emit_params.flags = XDL_EMIT_FUNCNAMES;
345 emit_cb.outf = filediff_cb;
346 emit_cb.priv = fn;
347 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
348 return 0;
349}
350
351void cgit_diff_tree(const unsigned char *old_sha1,
352 const unsigned char *new_sha1,
353 filepair_fn fn)
354{
355 struct diff_options opt;
356 int ret;
357
358 diff_setup(&opt);
359 opt.output_format = DIFF_FORMAT_CALLBACK;
360 opt.detect_rename = 1;
361 opt.recursive = 1;
362 opt.format_callback = cgit_diff_tree_cb;
363 opt.format_callback_data = fn;
364 diff_setup_done(&opt);
365
366 if (old_sha1 && !is_null_sha1(old_sha1))
367 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
368 else
369 ret = diff_root_tree_sha1(new_sha1, "", &opt);
370 diffcore_std(&opt);
371 diff_flush(&opt);
372}
373
374void cgit_diff_commit(struct commit *commit, filepair_fn fn)
375{
376 unsigned char *old_sha1 = NULL;
377
378 if (commit->parents)
379 old_sha1 = commit->parents->item->object.sha1;
380 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
381}