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 return ret;
111}
112
113struct repoinfo *cgit_get_repoinfo(const char *url)
114{
115 int i;
116 struct repoinfo *repo;
117
118 for (i=0; i<cgit_repolist.count; i++) {
119 repo = &cgit_repolist.repos[i];
120 if (!strcmp(repo->url, url))
121 return repo;
122 }
123 return NULL;
124}
125
126void cgit_global_config_cb(const char *name, const char *value)
127{
128 if (!strcmp(name, "root-title"))
129 cgit_root_title = xstrdup(value);
130 else if (!strcmp(name, "css"))
131 cgit_css = xstrdup(value);
132 else if (!strcmp(name, "logo"))
133 cgit_logo = xstrdup(value);
134 else if (!strcmp(name, "index-header"))
135 cgit_index_header = xstrdup(value);
136 else if (!strcmp(name, "logo-link"))
137 cgit_logo_link = xstrdup(value);
138 else if (!strcmp(name, "module-link"))
139 cgit_module_link = xstrdup(value);
140 else if (!strcmp(name, "virtual-root"))
141 cgit_virtual_root = xstrdup(value);
142 else if (!strcmp(name, "nocache"))
143 cgit_nocache = atoi(value);
144 else if (!strcmp(name, "snapshots"))
145 cgit_snapshots = atoi(value);
146 else if (!strcmp(name, "enable-log-filecount"))
147 cgit_enable_log_filecount = atoi(value);
148 else if (!strcmp(name, "enable-log-linecount"))
149 cgit_enable_log_linecount = atoi(value);
150 else if (!strcmp(name, "cache-root"))
151 cgit_cache_root = xstrdup(value);
152 else if (!strcmp(name, "cache-root-ttl"))
153 cgit_cache_root_ttl = atoi(value);
154 else if (!strcmp(name, "cache-repo-ttl"))
155 cgit_cache_repo_ttl = atoi(value);
156 else if (!strcmp(name, "cache-static-ttl"))
157 cgit_cache_static_ttl = atoi(value);
158 else if (!strcmp(name, "cache-dynamic-ttl"))
159 cgit_cache_dynamic_ttl = atoi(value);
160 else if (!strcmp(name, "max-message-length"))
161 cgit_max_msg_len = atoi(value);
162 else if (!strcmp(name, "max-repodesc-length"))
163 cgit_max_repodesc_len = atoi(value);
164 else if (!strcmp(name, "max-commit-count"))
165 cgit_max_commit_count = atoi(value);
166 else if (!strcmp(name, "agefile"))
167 cgit_agefile = xstrdup(value);
168 else if (!strcmp(name, "repo.group"))
169 cgit_repo_group = xstrdup(value);
170 else if (!strcmp(name, "repo.url"))
171 cgit_repo = add_repo(value);
172 else if (!strcmp(name, "repo.name"))
173 cgit_repo->name = xstrdup(value);
174 else if (cgit_repo && !strcmp(name, "repo.path"))
175 cgit_repo->path = xstrdup(value);
176 else if (cgit_repo && !strcmp(name, "repo.desc"))
177 cgit_repo->desc = xstrdup(value);
178 else if (cgit_repo && !strcmp(name, "repo.owner"))
179 cgit_repo->owner = xstrdup(value);
180 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
181 cgit_repo->defbranch = xstrdup(value);
182 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
183 cgit_repo->snapshots = cgit_snapshots * atoi(value);
184 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
185 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
186 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
187 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
188 else if (cgit_repo && !strcmp(name, "repo.module-link"))
189 cgit_repo->module_link= xstrdup(value);
190 else if (!strcmp(name, "include"))
191 cgit_read_config(value, cgit_global_config_cb);
192}
193
194void cgit_querystring_cb(const char *name, const char *value)
195{
196 if (!strcmp(name,"r")) {
197 cgit_query_repo = xstrdup(value);
198 cgit_repo = cgit_get_repoinfo(value);
199 } else if (!strcmp(name, "p")) {
200 cgit_query_page = xstrdup(value);
201 cgit_cmd = cgit_get_cmd_index(value);
202 } else if (!strcmp(name, "url")) {
203 cgit_parse_url(value);
204 } else if (!strcmp(name, "q")) {
205 cgit_query_search = xstrdup(value);
206 } else if (!strcmp(name, "h")) {
207 cgit_query_head = xstrdup(value);
208 cgit_query_has_symref = 1;
209 } else if (!strcmp(name, "id")) {
210 cgit_query_sha1 = xstrdup(value);
211 cgit_query_has_sha1 = 1;
212 } else if (!strcmp(name, "id2")) {
213 cgit_query_sha2 = xstrdup(value);
214 cgit_query_has_sha1 = 1;
215 } else if (!strcmp(name, "ofs")) {
216 cgit_query_ofs = atoi(value);
217 } else if (!strcmp(name, "path")) {
218 cgit_query_path = xstrdup(value);
219 } else if (!strcmp(name, "name")) {
220 cgit_query_name = xstrdup(value);
221 }
222}
223
224void *cgit_free_commitinfo(struct commitinfo *info)
225{
226 free(info->author);
227 free(info->author_email);
228 free(info->committer);
229 free(info->committer_email);
230 free(info->subject);
231 free(info);
232 return NULL;
233}
234
235int hextoint(char c)
236{
237 if (c >= 'a' && c <= 'f')
238 return 10 + c - 'a';
239 else if (c >= 'A' && c <= 'F')
240 return 10 + c - 'A';
241 else if (c >= '0' && c <= '9')
242 return c - '0';
243 else
244 return -1;
245}
246
247void cgit_diff_tree_cb(struct diff_queue_struct *q,
248 struct diff_options *options, void *data)
249{
250 int i;
251
252 for (i = 0; i < q->nr; i++) {
253 if (q->queue[i]->status == 'U')
254 continue;
255 ((filepair_fn)data)(q->queue[i]);
256 }
257}
258
259static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
260{
261 enum object_type type;
262
263 if (is_null_sha1(sha1)) {
264 file->ptr = (char *)"";
265 file->size = 0;
266 } else {
267 file->ptr = read_sha1_file(sha1, &type, &file->size);
268 }
269 return 1;
270}
271
272/*
273 * Receive diff-buffers from xdiff and concatenate them as
274 * needed across multiple callbacks.
275 *
276 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
277 * ripped from git and modified to use globals instead of
278 * a special callback-struct.
279 */
280char *diffbuf = NULL;
281int buflen = 0;
282
283int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
284{
285 int i;
286
287 for (i = 0; i < nbuf; i++) {
288 if (mb[i].ptr[mb[i].size-1] != '\n') {
289 /* Incomplete line */
290 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
291 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
292 buflen += mb[i].size;
293 continue;
294 }
295
296 /* we have a complete line */
297 if (!diffbuf) {
298 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
299 continue;
300 }
301 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
302 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
303 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
304 free(diffbuf);
305 diffbuf = NULL;
306 buflen = 0;
307 }
308 if (diffbuf) {
309 ((linediff_fn)priv)(diffbuf, buflen);
310 free(diffbuf);
311 diffbuf = NULL;
312 buflen = 0;
313 }
314 return 0;
315}
316
317int cgit_diff_files(const unsigned char *old_sha1,
318 const unsigned char *new_sha1,
319 linediff_fn fn)
320{
321 mmfile_t file1, file2;
322 xpparam_t diff_params;
323 xdemitconf_t emit_params;
324 xdemitcb_t emit_cb;
325
326 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
327 return 1;
328
329 diff_params.flags = XDF_NEED_MINIMAL;
330 emit_params.ctxlen = 3;
331 emit_params.flags = XDL_EMIT_FUNCNAMES;
332 emit_cb.outf = filediff_cb;
333 emit_cb.priv = fn;
334 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
335 return 0;
336}
337
338void cgit_diff_tree(const unsigned char *old_sha1,
339 const unsigned char *new_sha1,
340 filepair_fn fn)
341{
342 struct diff_options opt;
343 int ret;
344
345 diff_setup(&opt);
346 opt.output_format = DIFF_FORMAT_CALLBACK;
347 opt.detect_rename = 1;
348 opt.recursive = 1;
349 opt.format_callback = cgit_diff_tree_cb;
350 opt.format_callback_data = fn;
351 diff_setup_done(&opt);
352
353 if (old_sha1)
354 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
355 else
356 ret = diff_root_tree_sha1(new_sha1, "", &opt);
357 diffcore_std(&opt);
358 diff_flush(&opt);
359}
360
361void cgit_diff_commit(struct commit *commit, filepair_fn fn)
362{
363 unsigned char *old_sha1 = NULL;
364
365 if (commit->parents)
366 old_sha1 = commit->parents->item->object.sha1;
367 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
368}