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