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;
37int cgit_summary_log = 0;
38
39int cgit_max_msg_len = 60;
40int cgit_max_repodesc_len = 60;
41int cgit_max_commit_count = 50;
42
43int cgit_query_has_symref = 0;
44int cgit_query_has_sha1 = 0;
45
46char *cgit_querystring = NULL;
47char *cgit_query_repo = NULL;
48char *cgit_query_page = NULL;
49char *cgit_query_head = NULL;
50char *cgit_query_search = NULL;
51char *cgit_query_sha1 = NULL;
52char *cgit_query_sha2 = NULL;
53char *cgit_query_path = NULL;
54char *cgit_query_name = NULL;
55int cgit_query_ofs = 0;
56
57int htmlfd = 0;
58
59
60int cgit_get_cmd_index(const char *cmd)
61{
62 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
63 "snapshot", NULL};
64 int i;
65
66 for(i = 0; cmds[i]; i++)
67 if (!strcmp(cmd, cmds[i]))
68 return i + 1;
69 return 0;
70}
71
72int chk_zero(int result, char *msg)
73{
74 if (result != 0)
75 die("%s: %s", msg, strerror(errno));
76 return result;
77}
78
79int chk_positive(int result, char *msg)
80{
81 if (result <= 0)
82 die("%s: %s", msg, strerror(errno));
83 return result;
84}
85
86struct repoinfo *add_repo(const char *url)
87{
88 struct repoinfo *ret;
89
90 if (++cgit_repolist.count > cgit_repolist.length) {
91 if (cgit_repolist.length == 0)
92 cgit_repolist.length = 8;
93 else
94 cgit_repolist.length *= 2;
95 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
96 cgit_repolist.length *
97 sizeof(struct repoinfo));
98 }
99
100 ret = &cgit_repolist.repos[cgit_repolist.count-1];
101 ret->url = xstrdup(url);
102 ret->name = ret->url;
103 ret->path = NULL;
104 ret->desc = NULL;
105 ret->owner = NULL;
106 ret->group = cgit_repo_group;
107 ret->defbranch = "master";
108 ret->snapshots = cgit_snapshots;
109 ret->enable_log_filecount = cgit_enable_log_filecount;
110 ret->enable_log_linecount = cgit_enable_log_linecount;
111 ret->module_link = cgit_module_link;
112 ret->readme = NULL;
113 return ret;
114}
115
116struct repoinfo *cgit_get_repoinfo(const char *url)
117{
118 int i;
119 struct repoinfo *repo;
120
121 for (i=0; i<cgit_repolist.count; i++) {
122 repo = &cgit_repolist.repos[i];
123 if (!strcmp(repo->url, url))
124 return repo;
125 }
126 return NULL;
127}
128
129void cgit_global_config_cb(const char *name, const char *value)
130{
131 if (!strcmp(name, "root-title"))
132 cgit_root_title = xstrdup(value);
133 else if (!strcmp(name, "css"))
134 cgit_css = xstrdup(value);
135 else if (!strcmp(name, "logo"))
136 cgit_logo = xstrdup(value);
137 else if (!strcmp(name, "index-header"))
138 cgit_index_header = xstrdup(value);
139 else if (!strcmp(name, "logo-link"))
140 cgit_logo_link = xstrdup(value);
141 else if (!strcmp(name, "module-link"))
142 cgit_module_link = xstrdup(value);
143 else if (!strcmp(name, "virtual-root"))
144 cgit_virtual_root = xstrdup(value);
145 else if (!strcmp(name, "nocache"))
146 cgit_nocache = atoi(value);
147 else if (!strcmp(name, "snapshots"))
148 cgit_snapshots = atoi(value);
149 else if (!strcmp(name, "enable-log-filecount"))
150 cgit_enable_log_filecount = atoi(value);
151 else if (!strcmp(name, "enable-log-linecount"))
152 cgit_enable_log_linecount = atoi(value);
153 else if (!strcmp(name, "cache-root"))
154 cgit_cache_root = xstrdup(value);
155 else if (!strcmp(name, "cache-root-ttl"))
156 cgit_cache_root_ttl = atoi(value);
157 else if (!strcmp(name, "cache-repo-ttl"))
158 cgit_cache_repo_ttl = atoi(value);
159 else if (!strcmp(name, "cache-static-ttl"))
160 cgit_cache_static_ttl = atoi(value);
161 else if (!strcmp(name, "cache-dynamic-ttl"))
162 cgit_cache_dynamic_ttl = atoi(value);
163 else if (!strcmp(name, "max-message-length"))
164 cgit_max_msg_len = atoi(value);
165 else if (!strcmp(name, "max-repodesc-length"))
166 cgit_max_repodesc_len = atoi(value);
167 else if (!strcmp(name, "max-commit-count"))
168 cgit_max_commit_count = atoi(value);
169 else if (!strcmp(name, "summary-log"))
170 cgit_summary_log = atoi(value);
171 else if (!strcmp(name, "agefile"))
172 cgit_agefile = xstrdup(value);
173 else if (!strcmp(name, "repo.group"))
174 cgit_repo_group = xstrdup(value);
175 else if (!strcmp(name, "repo.url"))
176 cgit_repo = add_repo(value);
177 else if (!strcmp(name, "repo.name"))
178 cgit_repo->name = xstrdup(value);
179 else if (cgit_repo && !strcmp(name, "repo.path"))
180 cgit_repo->path = xstrdup(value);
181 else if (cgit_repo && !strcmp(name, "repo.desc"))
182 cgit_repo->desc = xstrdup(value);
183 else if (cgit_repo && !strcmp(name, "repo.owner"))
184 cgit_repo->owner = xstrdup(value);
185 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
186 cgit_repo->defbranch = xstrdup(value);
187 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
188 cgit_repo->snapshots = cgit_snapshots * atoi(value);
189 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
190 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
191 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
192 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
193 else if (cgit_repo && !strcmp(name, "repo.module-link"))
194 cgit_repo->module_link= xstrdup(value);
195 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
196 if (*value == '/')
197 cgit_repo->readme = xstrdup(value);
198 else
199 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
200 } else if (!strcmp(name, "include"))
201 cgit_read_config(value, cgit_global_config_cb);
202}
203
204void cgit_querystring_cb(const char *name, const char *value)
205{
206 if (!strcmp(name,"r")) {
207 cgit_query_repo = xstrdup(value);
208 cgit_repo = cgit_get_repoinfo(value);
209 } else if (!strcmp(name, "p")) {
210 cgit_query_page = xstrdup(value);
211 cgit_cmd = cgit_get_cmd_index(value);
212 } else if (!strcmp(name, "url")) {
213 cgit_parse_url(value);
214 } else if (!strcmp(name, "q")) {
215 cgit_query_search = xstrdup(value);
216 } else if (!strcmp(name, "h")) {
217 cgit_query_head = xstrdup(value);
218 cgit_query_has_symref = 1;
219 } else if (!strcmp(name, "id")) {
220 cgit_query_sha1 = xstrdup(value);
221 cgit_query_has_sha1 = 1;
222 } else if (!strcmp(name, "id2")) {
223 cgit_query_sha2 = xstrdup(value);
224 cgit_query_has_sha1 = 1;
225 } else if (!strcmp(name, "ofs")) {
226 cgit_query_ofs = atoi(value);
227 } else if (!strcmp(name, "path")) {
228 cgit_query_path = xstrdup(value);
229 } else if (!strcmp(name, "name")) {
230 cgit_query_name = xstrdup(value);
231 }
232}
233
234void *cgit_free_commitinfo(struct commitinfo *info)
235{
236 free(info->author);
237 free(info->author_email);
238 free(info->committer);
239 free(info->committer_email);
240 free(info->subject);
241 free(info);
242 return NULL;
243}
244
245int hextoint(char c)
246{
247 if (c >= 'a' && c <= 'f')
248 return 10 + c - 'a';
249 else if (c >= 'A' && c <= 'F')
250 return 10 + c - 'A';
251 else if (c >= '0' && c <= '9')
252 return c - '0';
253 else
254 return -1;
255}
256
257void cgit_diff_tree_cb(struct diff_queue_struct *q,
258 struct diff_options *options, void *data)
259{
260 int i;
261
262 for (i = 0; i < q->nr; i++) {
263 if (q->queue[i]->status == 'U')
264 continue;
265 ((filepair_fn)data)(q->queue[i]);
266 }
267}
268
269static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
270{
271 enum object_type type;
272
273 if (is_null_sha1(sha1)) {
274 file->ptr = (char *)"";
275 file->size = 0;
276 } else {
277 file->ptr = read_sha1_file(sha1, &type, &file->size);
278 }
279 return 1;
280}
281
282/*
283 * Receive diff-buffers from xdiff and concatenate them as
284 * needed across multiple callbacks.
285 *
286 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
287 * ripped from git and modified to use globals instead of
288 * a special callback-struct.
289 */
290char *diffbuf = NULL;
291int buflen = 0;
292
293int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
294{
295 int i;
296
297 for (i = 0; i < nbuf; i++) {
298 if (mb[i].ptr[mb[i].size-1] != '\n') {
299 /* Incomplete line */
300 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
301 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
302 buflen += mb[i].size;
303 continue;
304 }
305
306 /* we have a complete line */
307 if (!diffbuf) {
308 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
309 continue;
310 }
311 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
312 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
313 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
314 free(diffbuf);
315 diffbuf = NULL;
316 buflen = 0;
317 }
318 if (diffbuf) {
319 ((linediff_fn)priv)(diffbuf, buflen);
320 free(diffbuf);
321 diffbuf = NULL;
322 buflen = 0;
323 }
324 return 0;
325}
326
327int cgit_diff_files(const unsigned char *old_sha1,
328 const unsigned char *new_sha1,
329 linediff_fn fn)
330{
331 mmfile_t file1, file2;
332 xpparam_t diff_params;
333 xdemitconf_t emit_params;
334 xdemitcb_t emit_cb;
335
336 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
337 return 1;
338
339 diff_params.flags = XDF_NEED_MINIMAL;
340 emit_params.ctxlen = 3;
341 emit_params.flags = XDL_EMIT_FUNCNAMES;
342 emit_cb.outf = filediff_cb;
343 emit_cb.priv = fn;
344 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
345 return 0;
346}
347
348void cgit_diff_tree(const unsigned char *old_sha1,
349 const unsigned char *new_sha1,
350 filepair_fn fn)
351{
352 struct diff_options opt;
353 int ret;
354
355 diff_setup(&opt);
356 opt.output_format = DIFF_FORMAT_CALLBACK;
357 opt.detect_rename = 1;
358 opt.recursive = 1;
359 opt.format_callback = cgit_diff_tree_cb;
360 opt.format_callback_data = fn;
361 diff_setup_done(&opt);
362
363 if (old_sha1)
364 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
365 else
366 ret = diff_root_tree_sha1(new_sha1, "", &opt);
367 diffcore_std(&opt);
368 diff_flush(&opt);
369}
370
371void cgit_diff_commit(struct commit *commit, filepair_fn fn)
372{
373 unsigned char *old_sha1 = NULL;
374
375 if (commit->parents)
376 old_sha1 = commit->parents->item->object.sha1;
377 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
378}