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;
20
21char *cgit_cache_root = "/var/cache/cgit";
22
23int cgit_nocache = 0;
24int cgit_snapshots = 0;
25int cgit_max_lock_attempts = 5;
26int cgit_cache_root_ttl = 5;
27int cgit_cache_repo_ttl = 5;
28int cgit_cache_dynamic_ttl = 5;
29int cgit_cache_static_ttl = -1;
30int cgit_cache_max_create_time = 5;
31
32int cgit_max_msg_len = 60;
33
34char *cgit_repo_name = NULL;
35char *cgit_repo_desc = NULL;
36char *cgit_repo_owner = NULL;
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->snapshots = cgit_snapshots;
89 ret->module_link = cgit_module_link;
90 return ret;
91}
92
93void cgit_global_config_cb(const char *name, const char *value)
94{
95 if (!strcmp(name, "root-title"))
96 cgit_root_title = xstrdup(value);
97 else if (!strcmp(name, "css"))
98 cgit_css = xstrdup(value);
99 else if (!strcmp(name, "logo"))
100 cgit_logo = xstrdup(value);
101 else if (!strcmp(name, "logo-link"))
102 cgit_logo_link = xstrdup(value);
103 else if (!strcmp(name, "module-link"))
104 cgit_module_link = xstrdup(value);
105 else if (!strcmp(name, "virtual-root"))
106 cgit_virtual_root = xstrdup(value);
107 else if (!strcmp(name, "nocache"))
108 cgit_nocache = atoi(value);
109 else if (!strcmp(name, "snapshots"))
110 cgit_snapshots = atoi(value);
111 else if (!strcmp(name, "cache-root"))
112 cgit_cache_root = xstrdup(value);
113 else if (!strcmp(name, "cache-root-ttl"))
114 cgit_cache_root_ttl = atoi(value);
115 else if (!strcmp(name, "cache-repo-ttl"))
116 cgit_cache_repo_ttl = atoi(value);
117 else if (!strcmp(name, "cache-static-ttl"))
118 cgit_cache_static_ttl = atoi(value);
119 else if (!strcmp(name, "cache-dynamic-ttl"))
120 cgit_cache_dynamic_ttl = atoi(value);
121 else if (!strcmp(name, "max-message-length"))
122 cgit_max_msg_len = atoi(value);
123 else if (!strcmp(name, "repo.url"))
124 cgit_repo = add_repo(value);
125 else if (!strcmp(name, "repo.name"))
126 cgit_repo->name = xstrdup(value);
127 else if (cgit_repo && !strcmp(name, "repo.path"))
128 cgit_repo->path = xstrdup(value);
129 else if (cgit_repo && !strcmp(name, "repo.desc"))
130 cgit_repo->desc = xstrdup(value);
131 else if (cgit_repo && !strcmp(name, "repo.owner"))
132 cgit_repo->owner = xstrdup(value);
133 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
134 cgit_repo->snapshots = atoi(value);
135 else if (cgit_repo && !strcmp(name, "repo.module-link"))
136 cgit_repo->module_link= xstrdup(value);
137}
138
139void cgit_repo_config_cb(const char *name, const char *value)
140{
141 if (!strcmp(name, "name"))
142 cgit_repo_name = xstrdup(value);
143 else if (!strcmp(name, "desc"))
144 cgit_repo_desc = xstrdup(value);
145 else if (!strcmp(name, "owner"))
146 cgit_repo_owner = xstrdup(value);
147}
148
149void cgit_querystring_cb(const char *name, const char *value)
150{
151 if (!strcmp(name,"r")) {
152 cgit_query_repo = xstrdup(value);
153 } else if (!strcmp(name, "p")) {
154 cgit_query_page = xstrdup(value);
155 } else if (!strcmp(name, "q")) {
156 cgit_query_search = xstrdup(value);
157 } else if (!strcmp(name, "h")) {
158 cgit_query_head = xstrdup(value);
159 cgit_query_has_symref = 1;
160 } else if (!strcmp(name, "id")) {
161 cgit_query_sha1 = xstrdup(value);
162 cgit_query_has_sha1 = 1;
163 } else if (!strcmp(name, "id2")) {
164 cgit_query_sha2 = xstrdup(value);
165 cgit_query_has_sha1 = 1;
166 } else if (!strcmp(name, "ofs")) {
167 cgit_query_ofs = atoi(value);
168 } else if (!strcmp(name, "path")) {
169 cgit_query_path = xstrdup(value);
170 } else if (!strcmp(name, "name")) {
171 cgit_query_name = xstrdup(value);
172 }
173}
174
175void *cgit_free_commitinfo(struct commitinfo *info)
176{
177 free(info->author);
178 free(info->author_email);
179 free(info->committer);
180 free(info->committer_email);
181 free(info->subject);
182 free(info);
183 return NULL;
184}
185
186int hextoint(char c)
187{
188 if (c >= 'a' && c <= 'f')
189 return 10 + c - 'a';
190 else if (c >= 'A' && c <= 'F')
191 return 10 + c - 'A';
192 else if (c >= '0' && c <= '9')
193 return c - '0';
194 else
195 return -1;
196}
197
198void cgit_diff_tree_cb(struct diff_queue_struct *q,
199 struct diff_options *options, void *data)
200{
201 int i;
202
203 for (i = 0; i < q->nr; i++) {
204 if (q->queue[i]->status == 'U')
205 continue;
206 ((filepair_fn)data)(q->queue[i]);
207 }
208}
209
210static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
211{
212 enum object_type type;
213
214 if (is_null_sha1(sha1)) {
215 file->ptr = (char *)"";
216 file->size = 0;
217 } else {
218 file->ptr = read_sha1_file(sha1, &type, &file->size);
219 }
220 return 1;
221}
222
223/*
224 * Receive diff-buffers from xdiff and concatenate them as
225 * needed across multiple callbacks.
226 *
227 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
228 * ripped from git and modified to use globals instead of
229 * a special callback-struct.
230 */
231char *diffbuf = NULL;
232int buflen = 0;
233
234int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
235{
236 int i;
237
238 for (i = 0; i < nbuf; i++) {
239 if (mb[i].ptr[mb[i].size-1] != '\n') {
240 /* Incomplete line */
241 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
242 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
243 buflen += mb[i].size;
244 continue;
245 }
246
247 /* we have a complete line */
248 if (!diffbuf) {
249 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
250 continue;
251 }
252 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
253 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
254 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
255 free(diffbuf);
256 diffbuf = NULL;
257 buflen = 0;
258 }
259 if (diffbuf) {
260 ((linediff_fn)priv)(diffbuf, buflen);
261 free(diffbuf);
262 diffbuf = NULL;
263 buflen = 0;
264 }
265 return 0;
266}
267
268int cgit_diff_files(const unsigned char *old_sha1,
269 const unsigned char *new_sha1,
270 linediff_fn fn)
271{
272 mmfile_t file1, file2;
273 xpparam_t diff_params;
274 xdemitconf_t emit_params;
275 xdemitcb_t emit_cb;
276
277 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
278 return 1;
279
280 diff_params.flags = XDF_NEED_MINIMAL;
281 emit_params.ctxlen = 3;
282 emit_params.flags = XDL_EMIT_FUNCNAMES;
283 emit_cb.outf = filediff_cb;
284 emit_cb.priv = fn;
285 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
286 return 0;
287}
288
289void cgit_diff_tree(const unsigned char *old_sha1,
290 const unsigned char *new_sha1,
291 filepair_fn fn)
292{
293 struct diff_options opt;
294 int ret;
295
296 diff_setup(&opt);
297 opt.output_format = DIFF_FORMAT_CALLBACK;
298 opt.detect_rename = 1;
299 opt.recursive = 1;
300 opt.format_callback = cgit_diff_tree_cb;
301 opt.format_callback_data = fn;
302 diff_setup_done(&opt);
303
304 if (old_sha1)
305 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
306 else
307 ret = diff_root_tree_sha1(new_sha1, "", &opt);
308 diffcore_std(&opt);
309 diff_flush(&opt);
310}
311
312void cgit_diff_commit(struct commit *commit, filepair_fn fn)
313{
314 unsigned char *old_sha1 = NULL;
315
316 if (commit->parents)
317 old_sha1 = commit->parents->item->object.sha1;
318 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
319}