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
15const char *cgit_version = CGIT_VERSION;
16
17char *cgit_root_title = "Git repository browser";
18char *cgit_css = "/cgit.css";
19char *cgit_logo = "/git-logo.png";
20char *cgit_index_header = NULL;
21char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
22char *cgit_module_link = "./?repo=%s&page=commit&id=%s";
23char *cgit_agefile = "info/web/last-modified";
24char *cgit_virtual_root = NULL;
25char *cgit_script_name = CGIT_SCRIPT_NAME;
26char *cgit_cache_root = "/var/cache/cgit";
27char *cgit_repo_group = NULL;
28
29int cgit_nocache = 0;
30int cgit_snapshots = 0;
31int cgit_enable_index_links = 0;
32int cgit_enable_log_filecount = 0;
33int cgit_enable_log_linecount = 0;
34int cgit_max_lock_attempts = 5;
35int cgit_cache_root_ttl = 5;
36int cgit_cache_repo_ttl = 5;
37int cgit_cache_dynamic_ttl = 5;
38int cgit_cache_static_ttl = -1;
39int cgit_cache_max_create_time = 5;
40int cgit_summary_log = 0;
41
42int cgit_max_msg_len = 60;
43int cgit_max_repodesc_len = 60;
44int cgit_max_commit_count = 50;
45
46int cgit_query_has_symref = 0;
47int cgit_query_has_sha1 = 0;
48
49char *cgit_querystring = NULL;
50char *cgit_query_repo = NULL;
51char *cgit_query_page = NULL;
52char *cgit_query_head = NULL;
53char *cgit_query_search = NULL;
54char *cgit_query_sha1 = NULL;
55char *cgit_query_sha2 = NULL;
56char *cgit_query_path = NULL;
57char *cgit_query_name = NULL;
58int cgit_query_ofs = 0;
59
60int htmlfd = 0;
61
62
63int cgit_get_cmd_index(const char *cmd)
64{
65 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
66 "snapshot", NULL};
67 int i;
68
69 for(i = 0; cmds[i]; i++)
70 if (!strcmp(cmd, cmds[i]))
71 return i + 1;
72 return 0;
73}
74
75int chk_zero(int result, char *msg)
76{
77 if (result != 0)
78 die("%s: %s", msg, strerror(errno));
79 return result;
80}
81
82int chk_positive(int result, char *msg)
83{
84 if (result <= 0)
85 die("%s: %s", msg, strerror(errno));
86 return result;
87}
88
89struct repoinfo *add_repo(const char *url)
90{
91 struct repoinfo *ret;
92
93 if (++cgit_repolist.count > cgit_repolist.length) {
94 if (cgit_repolist.length == 0)
95 cgit_repolist.length = 8;
96 else
97 cgit_repolist.length *= 2;
98 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
99 cgit_repolist.length *
100 sizeof(struct repoinfo));
101 }
102
103 ret = &cgit_repolist.repos[cgit_repolist.count-1];
104 ret->url = xstrdup(url);
105 ret->name = ret->url;
106 ret->path = NULL;
107 ret->desc = NULL;
108 ret->owner = NULL;
109 ret->group = cgit_repo_group;
110 ret->defbranch = "master";
111 ret->snapshots = cgit_snapshots;
112 ret->enable_log_filecount = cgit_enable_log_filecount;
113 ret->enable_log_linecount = cgit_enable_log_linecount;
114 ret->module_link = cgit_module_link;
115 ret->readme = NULL;
116 return ret;
117}
118
119struct repoinfo *cgit_get_repoinfo(const char *url)
120{
121 int i;
122 struct repoinfo *repo;
123
124 for (i=0; i<cgit_repolist.count; i++) {
125 repo = &cgit_repolist.repos[i];
126 if (!strcmp(repo->url, url))
127 return repo;
128 }
129 return NULL;
130}
131
132void cgit_global_config_cb(const char *name, const char *value)
133{
134 if (!strcmp(name, "root-title"))
135 cgit_root_title = xstrdup(value);
136 else if (!strcmp(name, "css"))
137 cgit_css = xstrdup(value);
138 else if (!strcmp(name, "logo"))
139 cgit_logo = xstrdup(value);
140 else if (!strcmp(name, "index-header"))
141 cgit_index_header = xstrdup(value);
142 else if (!strcmp(name, "logo-link"))
143 cgit_logo_link = xstrdup(value);
144 else if (!strcmp(name, "module-link"))
145 cgit_module_link = xstrdup(value);
146 else if (!strcmp(name, "virtual-root"))
147 cgit_virtual_root = xstrdup(value);
148 else if (!strcmp(name, "nocache"))
149 cgit_nocache = atoi(value);
150 else if (!strcmp(name, "snapshots"))
151 cgit_snapshots = atoi(value);
152 else if (!strcmp(name, "enable-index-links"))
153 cgit_enable_index_links = atoi(value);
154 else if (!strcmp(name, "enable-log-filecount"))
155 cgit_enable_log_filecount = atoi(value);
156 else if (!strcmp(name, "enable-log-linecount"))
157 cgit_enable_log_linecount = atoi(value);
158 else if (!strcmp(name, "cache-root"))
159 cgit_cache_root = xstrdup(value);
160 else if (!strcmp(name, "cache-root-ttl"))
161 cgit_cache_root_ttl = atoi(value);
162 else if (!strcmp(name, "cache-repo-ttl"))
163 cgit_cache_repo_ttl = atoi(value);
164 else if (!strcmp(name, "cache-static-ttl"))
165 cgit_cache_static_ttl = atoi(value);
166 else if (!strcmp(name, "cache-dynamic-ttl"))
167 cgit_cache_dynamic_ttl = atoi(value);
168 else if (!strcmp(name, "max-message-length"))
169 cgit_max_msg_len = atoi(value);
170 else if (!strcmp(name, "max-repodesc-length"))
171 cgit_max_repodesc_len = atoi(value);
172 else if (!strcmp(name, "max-commit-count"))
173 cgit_max_commit_count = atoi(value);
174 else if (!strcmp(name, "summary-log"))
175 cgit_summary_log = atoi(value);
176 else if (!strcmp(name, "agefile"))
177 cgit_agefile = xstrdup(value);
178 else if (!strcmp(name, "repo.group"))
179 cgit_repo_group = xstrdup(value);
180 else if (!strcmp(name, "repo.url"))
181 cgit_repo = add_repo(value);
182 else if (!strcmp(name, "repo.name"))
183 cgit_repo->name = xstrdup(value);
184 else if (cgit_repo && !strcmp(name, "repo.path"))
185 cgit_repo->path = xstrdup(value);
186 else if (cgit_repo && !strcmp(name, "repo.desc"))
187 cgit_repo->desc = xstrdup(value);
188 else if (cgit_repo && !strcmp(name, "repo.owner"))
189 cgit_repo->owner = xstrdup(value);
190 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
191 cgit_repo->defbranch = xstrdup(value);
192 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
193 cgit_repo->snapshots = cgit_snapshots * atoi(value);
194 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
195 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
196 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
197 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
198 else if (cgit_repo && !strcmp(name, "repo.module-link"))
199 cgit_repo->module_link= xstrdup(value);
200 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
201 if (*value == '/')
202 cgit_repo->readme = xstrdup(value);
203 else
204 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
205 } else if (!strcmp(name, "include"))
206 cgit_read_config(value, cgit_global_config_cb);
207}
208
209void cgit_querystring_cb(const char *name, const char *value)
210{
211 if (!strcmp(name,"r")) {
212 cgit_query_repo = xstrdup(value);
213 cgit_repo = cgit_get_repoinfo(value);
214 } else if (!strcmp(name, "p")) {
215 cgit_query_page = xstrdup(value);
216 cgit_cmd = cgit_get_cmd_index(value);
217 } else if (!strcmp(name, "url")) {
218 cgit_parse_url(value);
219 } else if (!strcmp(name, "q")) {
220 cgit_query_search = xstrdup(value);
221 } else if (!strcmp(name, "h")) {
222 cgit_query_head = xstrdup(value);
223 cgit_query_has_symref = 1;
224 } else if (!strcmp(name, "id")) {
225 cgit_query_sha1 = xstrdup(value);
226 cgit_query_has_sha1 = 1;
227 } else if (!strcmp(name, "id2")) {
228 cgit_query_sha2 = xstrdup(value);
229 cgit_query_has_sha1 = 1;
230 } else if (!strcmp(name, "ofs")) {
231 cgit_query_ofs = atoi(value);
232 } else if (!strcmp(name, "path")) {
233 cgit_query_path = trim_end(value, '/');
234 } else if (!strcmp(name, "name")) {
235 cgit_query_name = xstrdup(value);
236 }
237}
238
239void *cgit_free_commitinfo(struct commitinfo *info)
240{
241 free(info->author);
242 free(info->author_email);
243 free(info->committer);
244 free(info->committer_email);
245 free(info->subject);
246 free(info);
247 return NULL;
248}
249
250int hextoint(char c)
251{
252 if (c >= 'a' && c <= 'f')
253 return 10 + c - 'a';
254 else if (c >= 'A' && c <= 'F')
255 return 10 + c - 'A';
256 else if (c >= '0' && c <= '9')
257 return c - '0';
258 else
259 return -1;
260}
261
262char *trim_end(const char *str, char c)
263{
264 int len;
265 char *s, *t;
266
267 if (str == NULL)
268 return NULL;
269 t = (char *)str;
270 len = strlen(t);
271 while(len > 0 && t[len - 1] == c)
272 len--;
273
274 if (len == 0)
275 return NULL;
276
277 c = t[len];
278 t[len] = '\0';
279 s = xstrdup(t);
280 t[len] = c;
281 return s;
282}
283
284void cgit_diff_tree_cb(struct diff_queue_struct *q,
285 struct diff_options *options, void *data)
286{
287 int i;
288
289 for (i = 0; i < q->nr; i++) {
290 if (q->queue[i]->status == 'U')
291 continue;
292 ((filepair_fn)data)(q->queue[i]);
293 }
294}
295
296static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
297{
298 enum object_type type;
299
300 if (is_null_sha1(sha1)) {
301 file->ptr = (char *)"";
302 file->size = 0;
303 } else {
304 file->ptr = read_sha1_file(sha1, &type, &file->size);
305 }
306 return 1;
307}
308
309/*
310 * Receive diff-buffers from xdiff and concatenate them as
311 * needed across multiple callbacks.
312 *
313 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
314 * ripped from git and modified to use globals instead of
315 * a special callback-struct.
316 */
317char *diffbuf = NULL;
318int buflen = 0;
319
320int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
321{
322 int i;
323
324 for (i = 0; i < nbuf; i++) {
325 if (mb[i].ptr[mb[i].size-1] != '\n') {
326 /* Incomplete line */
327 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
328 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
329 buflen += mb[i].size;
330 continue;
331 }
332
333 /* we have a complete line */
334 if (!diffbuf) {
335 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
336 continue;
337 }
338 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
339 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
340 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
341 free(diffbuf);
342 diffbuf = NULL;
343 buflen = 0;
344 }
345 if (diffbuf) {
346 ((linediff_fn)priv)(diffbuf, buflen);
347 free(diffbuf);
348 diffbuf = NULL;
349 buflen = 0;
350 }
351 return 0;
352}
353
354int cgit_diff_files(const unsigned char *old_sha1,
355 const unsigned char *new_sha1,
356 linediff_fn fn)
357{
358 mmfile_t file1, file2;
359 xpparam_t diff_params;
360 xdemitconf_t emit_params;
361 xdemitcb_t emit_cb;
362
363 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
364 return 1;
365
366 diff_params.flags = XDF_NEED_MINIMAL;
367 emit_params.ctxlen = 3;
368 emit_params.flags = XDL_EMIT_FUNCNAMES;
369 emit_cb.outf = filediff_cb;
370 emit_cb.priv = fn;
371 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
372 return 0;
373}
374
375void cgit_diff_tree(const unsigned char *old_sha1,
376 const unsigned char *new_sha1,
377 filepair_fn fn)
378{
379 struct diff_options opt;
380 int ret;
381
382 diff_setup(&opt);
383 opt.output_format = DIFF_FORMAT_CALLBACK;
384 opt.detect_rename = 1;
385 opt.recursive = 1;
386 opt.format_callback = cgit_diff_tree_cb;
387 opt.format_callback_data = fn;
388 diff_setup_done(&opt);
389
390 if (old_sha1 && !is_null_sha1(old_sha1))
391 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
392 else
393 ret = diff_root_tree_sha1(new_sha1, "", &opt);
394 diffcore_std(&opt);
395 diff_flush(&opt);
396}
397
398void cgit_diff_commit(struct commit *commit, filepair_fn fn)
399{
400 unsigned char *old_sha1 = NULL;
401
402 if (commit->parents)
403 old_sha1 = commit->parents->item->object.sha1;
404 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
405}