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_agefile = "info/web/last-modified";
22char *cgit_virtual_root = NULL;
23char *cgit_script_name = CGIT_SCRIPT_NAME;
24char *cgit_cache_root = "/var/cache/cgit";
25char *cgit_repo_group = NULL;
26
27int cgit_nocache = 0;
28int cgit_snapshots = 0;
29int cgit_enable_log_filecount = 0;
30int cgit_enable_log_linecount = 0;
31int cgit_max_lock_attempts = 5;
32int cgit_cache_root_ttl = 5;
33int cgit_cache_repo_ttl = 5;
34int cgit_cache_dynamic_ttl = 5;
35int cgit_cache_static_ttl = -1;
36int cgit_cache_max_create_time = 5;
37
38int cgit_max_msg_len = 60;
39int cgit_max_repodesc_len = 60;
40int cgit_max_commit_count = 50;
41
42int cgit_query_has_symref = 0;
43int cgit_query_has_sha1 = 0;
44
45char *cgit_querystring = NULL;
46char *cgit_query_repo = NULL;
47char *cgit_query_page = NULL;
48char *cgit_query_head = NULL;
49char *cgit_query_search = NULL;
50char *cgit_query_sha1 = NULL;
51char *cgit_query_sha2 = NULL;
52char *cgit_query_path = NULL;
53char *cgit_query_name = NULL;
54int cgit_query_ofs = 0;
55
56int htmlfd = 0;
57
58
59int cgit_get_cmd_index(const char *cmd)
60{
61 static char *cmds[] = {"log", "commit", "diff", "tree", "view", "blob", "snapshot", NULL};
62 int i;
63
64 for(i = 0; cmds[i]; i++)
65 if (!strcmp(cmd, cmds[i]))
66 return i + 1;
67 return 0;
68}
69
70int chk_zero(int result, char *msg)
71{
72 if (result != 0)
73 die("%s: %s", msg, strerror(errno));
74 return result;
75}
76
77int chk_positive(int result, char *msg)
78{
79 if (result <= 0)
80 die("%s: %s", msg, strerror(errno));
81 return result;
82}
83
84struct repoinfo *add_repo(const char *url)
85{
86 struct repoinfo *ret;
87
88 if (++cgit_repolist.count > cgit_repolist.length) {
89 if (cgit_repolist.length == 0)
90 cgit_repolist.length = 8;
91 else
92 cgit_repolist.length *= 2;
93 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
94 cgit_repolist.length *
95 sizeof(struct repoinfo));
96 }
97
98 ret = &cgit_repolist.repos[cgit_repolist.count-1];
99 ret->url = xstrdup(url);
100 ret->name = ret->url;
101 ret->path = NULL;
102 ret->desc = NULL;
103 ret->owner = NULL;
104 ret->group = cgit_repo_group;
105 ret->defbranch = "master";
106 ret->snapshots = cgit_snapshots;
107 ret->enable_log_filecount = cgit_enable_log_filecount;
108 ret->enable_log_linecount = cgit_enable_log_linecount;
109 ret->module_link = cgit_module_link;
110 ret->readme = NULL;
111 return ret;
112}
113
114struct repoinfo *cgit_get_repoinfo(const char *url)
115{
116 int i;
117 struct repoinfo *repo;
118
119 for (i=0; i<cgit_repolist.count; i++) {
120 repo = &cgit_repolist.repos[i];
121 if (!strcmp(repo->url, url))
122 return repo;
123 }
124 return NULL;
125}
126
127void cgit_global_config_cb(const char *name, const char *value)
128{
129 if (!strcmp(name, "root-title"))
130 cgit_root_title = xstrdup(value);
131 else if (!strcmp(name, "css"))
132 cgit_css = xstrdup(value);
133 else if (!strcmp(name, "logo"))
134 cgit_logo = xstrdup(value);
135 else if (!strcmp(name, "index-header"))
136 cgit_index_header = xstrdup(value);
137 else if (!strcmp(name, "logo-link"))
138 cgit_logo_link = xstrdup(value);
139 else if (!strcmp(name, "module-link"))
140 cgit_module_link = xstrdup(value);
141 else if (!strcmp(name, "virtual-root"))
142 cgit_virtual_root = xstrdup(value);
143 else if (!strcmp(name, "nocache"))
144 cgit_nocache = atoi(value);
145 else if (!strcmp(name, "snapshots"))
146 cgit_snapshots = atoi(value);
147 else if (!strcmp(name, "enable-log-filecount"))
148 cgit_enable_log_filecount = atoi(value);
149 else if (!strcmp(name, "enable-log-linecount"))
150 cgit_enable_log_linecount = atoi(value);
151 else if (!strcmp(name, "cache-root"))
152 cgit_cache_root = xstrdup(value);
153 else if (!strcmp(name, "cache-root-ttl"))
154 cgit_cache_root_ttl = atoi(value);
155 else if (!strcmp(name, "cache-repo-ttl"))
156 cgit_cache_repo_ttl = atoi(value);
157 else if (!strcmp(name, "cache-static-ttl"))
158 cgit_cache_static_ttl = atoi(value);
159 else if (!strcmp(name, "cache-dynamic-ttl"))
160 cgit_cache_dynamic_ttl = atoi(value);
161 else if (!strcmp(name, "max-message-length"))
162 cgit_max_msg_len = atoi(value);
163 else if (!strcmp(name, "max-repodesc-length"))
164 cgit_max_repodesc_len = atoi(value);
165 else if (!strcmp(name, "max-commit-count"))
166 cgit_max_commit_count = atoi(value);
167 else if (!strcmp(name, "agefile"))
168 cgit_agefile = xstrdup(value);
169 else if (!strcmp(name, "repo.group"))
170 cgit_repo_group = xstrdup(value);
171 else if (!strcmp(name, "repo.url"))
172 cgit_repo = add_repo(value);
173 else if (!strcmp(name, "repo.name"))
174 cgit_repo->name = xstrdup(value);
175 else if (cgit_repo && !strcmp(name, "repo.path"))
176 cgit_repo->path = xstrdup(value);
177 else if (cgit_repo && !strcmp(name, "repo.desc"))
178 cgit_repo->desc = xstrdup(value);
179 else if (cgit_repo && !strcmp(name, "repo.owner"))
180 cgit_repo->owner = xstrdup(value);
181 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
182 cgit_repo->defbranch = xstrdup(value);
183 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
184 cgit_repo->snapshots = cgit_snapshots * atoi(value);
185 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
186 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
187 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
188 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
189 else if (cgit_repo && !strcmp(name, "repo.module-link"))
190 cgit_repo->module_link= xstrdup(value);
191 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
192 if (*value == '/')
193 cgit_repo->readme = xstrdup(value);
194 else
195 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
196 } else if (!strcmp(name, "include"))
197 cgit_read_config(value, cgit_global_config_cb);
198}
199
200void cgit_querystring_cb(const char *name, const char *value)
201{
202 if (!strcmp(name,"r")) {
203 cgit_query_repo = xstrdup(value);
204 cgit_repo = cgit_get_repoinfo(value);
205 } else if (!strcmp(name, "p")) {
206 cgit_query_page = xstrdup(value);
207 cgit_cmd = cgit_get_cmd_index(value);
208 } else if (!strcmp(name, "url")) {
209 cgit_parse_url(value);
210 } else if (!strcmp(name, "q")) {
211 cgit_query_search = xstrdup(value);
212 } else if (!strcmp(name, "h")) {
213 cgit_query_head = xstrdup(value);
214 cgit_query_has_symref = 1;
215 } else if (!strcmp(name, "id")) {
216 cgit_query_sha1 = xstrdup(value);
217 cgit_query_has_sha1 = 1;
218 } else if (!strcmp(name, "id2")) {
219 cgit_query_sha2 = xstrdup(value);
220 cgit_query_has_sha1 = 1;
221 } else if (!strcmp(name, "ofs")) {
222 cgit_query_ofs = atoi(value);
223 } else if (!strcmp(name, "path")) {
224 cgit_query_path = xstrdup(value);
225 } else if (!strcmp(name, "name")) {
226 cgit_query_name = xstrdup(value);
227 }
228}
229
230void *cgit_free_commitinfo(struct commitinfo *info)
231{
232 free(info->author);
233 free(info->author_email);
234 free(info->committer);
235 free(info->committer_email);
236 free(info->subject);
237 free(info);
238 return NULL;
239}
240
241int hextoint(char c)
242{
243 if (c >= 'a' && c <= 'f')
244 return 10 + c - 'a';
245 else if (c >= 'A' && c <= 'F')
246 return 10 + c - 'A';
247 else if (c >= '0' && c <= '9')
248 return c - '0';
249 else
250 return -1;
251}
252
253void cgit_diff_tree_cb(struct diff_queue_struct *q,
254 struct diff_options *options, void *data)
255{
256 int i;
257
258 for (i = 0; i < q->nr; i++) {
259 if (q->queue[i]->status == 'U')
260 continue;
261 ((filepair_fn)data)(q->queue[i]);
262 }
263}
264
265static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
266{
267 enum object_type type;
268
269 if (is_null_sha1(sha1)) {
270 file->ptr = (char *)"";
271 file->size = 0;
272 } else {
273 file->ptr = read_sha1_file(sha1, &type, &file->size);
274 }
275 return 1;
276}
277
278/*
279 * Receive diff-buffers from xdiff and concatenate them as
280 * needed across multiple callbacks.
281 *
282 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
283 * ripped from git and modified to use globals instead of
284 * a special callback-struct.
285 */
286char *diffbuf = NULL;
287int buflen = 0;
288
289int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
290{
291 int i;
292
293 for (i = 0; i < nbuf; i++) {
294 if (mb[i].ptr[mb[i].size-1] != '\n') {
295 /* Incomplete line */
296 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
297 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
298 buflen += mb[i].size;
299 continue;
300 }
301
302 /* we have a complete line */
303 if (!diffbuf) {
304 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
305 continue;
306 }
307 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
308 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
309 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
310 free(diffbuf);
311 diffbuf = NULL;
312 buflen = 0;
313 }
314 if (diffbuf) {
315 ((linediff_fn)priv)(diffbuf, buflen);
316 free(diffbuf);
317 diffbuf = NULL;
318 buflen = 0;
319 }
320 return 0;
321}
322
323int cgit_diff_files(const unsigned char *old_sha1,
324 const unsigned char *new_sha1,
325 linediff_fn fn)
326{
327 mmfile_t file1, file2;
328 xpparam_t diff_params;
329 xdemitconf_t emit_params;
330 xdemitcb_t emit_cb;
331
332 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
333 return 1;
334
335 diff_params.flags = XDF_NEED_MINIMAL;
336 emit_params.ctxlen = 3;
337 emit_params.flags = XDL_EMIT_FUNCNAMES;
338 emit_cb.outf = filediff_cb;
339 emit_cb.priv = fn;
340 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
341 return 0;
342}
343
344void cgit_diff_tree(const unsigned char *old_sha1,
345 const unsigned char *new_sha1,
346 filepair_fn fn)
347{
348 struct diff_options opt;
349 int ret;
350
351 diff_setup(&opt);
352 opt.output_format = DIFF_FORMAT_CALLBACK;
353 opt.detect_rename = 1;
354 opt.recursive = 1;
355 opt.format_callback = cgit_diff_tree_cb;
356 opt.format_callback_data = fn;
357 diff_setup_done(&opt);
358
359 if (old_sha1)
360 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
361 else
362 ret = diff_root_tree_sha1(new_sha1, "", &opt);
363 diffcore_std(&opt);
364 diff_flush(&opt);
365}
366
367void cgit_diff_commit(struct commit *commit, filepair_fn fn)
368{
369 unsigned char *old_sha1 = NULL;
370
371 if (commit->parents)
372 old_sha1 = commit->parents->item->object.sha1;
373 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
374}