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