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