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