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