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 = CGIT_CACHE_ROOT;
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;
41int cgit_summary_tags = 0;
42int cgit_summary_branches = 0;
43int cgit_renamelimit = -1;
44
45int cgit_max_msg_len = 60;
46int cgit_max_repodesc_len = 60;
47int cgit_max_commit_count = 50;
48
49int cgit_query_has_symref = 0;
50int cgit_query_has_sha1 = 0;
51
52char *cgit_querystring = NULL;
53char *cgit_query_repo = NULL;
54char *cgit_query_page = NULL;
55char *cgit_query_head = NULL;
56char *cgit_query_search = NULL;
57char *cgit_query_grep = NULL;
58char *cgit_query_sha1 = NULL;
59char *cgit_query_sha2 = NULL;
60char *cgit_query_path = NULL;
61char *cgit_query_name = NULL;
62int cgit_query_ofs = 0;
63
64int htmlfd = 0;
65
66
67int cgit_get_cmd_index(const char *cmd)
68{
69 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
70 "snapshot", "tag", "refs", NULL};
71 int i;
72
73 for(i = 0; cmds[i]; i++)
74 if (!strcmp(cmd, cmds[i]))
75 return i + 1;
76 return 0;
77}
78
79int chk_zero(int result, char *msg)
80{
81 if (result != 0)
82 die("%s: %s", msg, strerror(errno));
83 return result;
84}
85
86int chk_positive(int result, char *msg)
87{
88 if (result <= 0)
89 die("%s: %s", msg, strerror(errno));
90 return result;
91}
92
93int chk_non_negative(int result, char *msg)
94{
95 if (result < 0)
96 die("%s: %s",msg, strerror(errno));
97 return result;
98}
99
100struct repoinfo *add_repo(const char *url)
101{
102 struct repoinfo *ret;
103
104 if (++cgit_repolist.count > cgit_repolist.length) {
105 if (cgit_repolist.length == 0)
106 cgit_repolist.length = 8;
107 else
108 cgit_repolist.length *= 2;
109 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
110 cgit_repolist.length *
111 sizeof(struct repoinfo));
112 }
113
114 ret = &cgit_repolist.repos[cgit_repolist.count-1];
115 ret->url = trim_end(url, '/');
116 ret->name = ret->url;
117 ret->path = NULL;
118 ret->desc = NULL;
119 ret->owner = NULL;
120 ret->group = cgit_repo_group;
121 ret->defbranch = "master";
122 ret->snapshots = cgit_snapshots;
123 ret->enable_log_filecount = cgit_enable_log_filecount;
124 ret->enable_log_linecount = cgit_enable_log_linecount;
125 ret->module_link = cgit_module_link;
126 ret->readme = NULL;
127 return ret;
128}
129
130struct repoinfo *cgit_get_repoinfo(const char *url)
131{
132 int i;
133 struct repoinfo *repo;
134
135 for (i=0; i<cgit_repolist.count; i++) {
136 repo = &cgit_repolist.repos[i];
137 if (!strcmp(repo->url, url))
138 return repo;
139 }
140 return NULL;
141}
142
143void cgit_global_config_cb(const char *name, const char *value)
144{
145 if (!strcmp(name, "root-title"))
146 cgit_root_title = xstrdup(value);
147 else if (!strcmp(name, "css"))
148 cgit_css = xstrdup(value);
149 else if (!strcmp(name, "logo"))
150 cgit_logo = xstrdup(value);
151 else if (!strcmp(name, "index-header"))
152 cgit_index_header = xstrdup(value);
153 else if (!strcmp(name, "logo-link"))
154 cgit_logo_link = xstrdup(value);
155 else if (!strcmp(name, "module-link"))
156 cgit_module_link = xstrdup(value);
157 else if (!strcmp(name, "virtual-root"))
158 cgit_virtual_root = trim_end(value, '/');
159 else if (!strcmp(name, "nocache"))
160 cgit_nocache = atoi(value);
161 else if (!strcmp(name, "snapshots"))
162 cgit_snapshots = cgit_parse_snapshots_mask(value);
163 else if (!strcmp(name, "enable-index-links"))
164 cgit_enable_index_links = atoi(value);
165 else if (!strcmp(name, "enable-log-filecount"))
166 cgit_enable_log_filecount = atoi(value);
167 else if (!strcmp(name, "enable-log-linecount"))
168 cgit_enable_log_linecount = atoi(value);
169 else if (!strcmp(name, "cache-root"))
170 cgit_cache_root = xstrdup(value);
171 else if (!strcmp(name, "cache-root-ttl"))
172 cgit_cache_root_ttl = atoi(value);
173 else if (!strcmp(name, "cache-repo-ttl"))
174 cgit_cache_repo_ttl = atoi(value);
175 else if (!strcmp(name, "cache-static-ttl"))
176 cgit_cache_static_ttl = atoi(value);
177 else if (!strcmp(name, "cache-dynamic-ttl"))
178 cgit_cache_dynamic_ttl = atoi(value);
179 else if (!strcmp(name, "max-message-length"))
180 cgit_max_msg_len = atoi(value);
181 else if (!strcmp(name, "max-repodesc-length"))
182 cgit_max_repodesc_len = atoi(value);
183 else if (!strcmp(name, "max-commit-count"))
184 cgit_max_commit_count = atoi(value);
185 else if (!strcmp(name, "summary-log"))
186 cgit_summary_log = atoi(value);
187 else if (!strcmp(name, "summary-branches"))
188 cgit_summary_branches = atoi(value);
189 else if (!strcmp(name, "summary-tags"))
190 cgit_summary_tags = atoi(value);
191 else if (!strcmp(name, "agefile"))
192 cgit_agefile = xstrdup(value);
193 else if (!strcmp(name, "renamelimit"))
194 cgit_renamelimit = atoi(value);
195 else if (!strcmp(name, "repo.group"))
196 cgit_repo_group = xstrdup(value);
197 else if (!strcmp(name, "repo.url"))
198 cgit_repo = add_repo(value);
199 else if (!strcmp(name, "repo.name"))
200 cgit_repo->name = xstrdup(value);
201 else if (cgit_repo && !strcmp(name, "repo.path"))
202 cgit_repo->path = trim_end(value, '/');
203 else if (cgit_repo && !strcmp(name, "repo.desc"))
204 cgit_repo->desc = xstrdup(value);
205 else if (cgit_repo && !strcmp(name, "repo.owner"))
206 cgit_repo->owner = xstrdup(value);
207 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
208 cgit_repo->defbranch = xstrdup(value);
209 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
210 cgit_repo->snapshots = cgit_snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
211 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
212 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
213 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
214 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
215 else if (cgit_repo && !strcmp(name, "repo.module-link"))
216 cgit_repo->module_link= xstrdup(value);
217 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
218 if (*value == '/')
219 cgit_repo->readme = xstrdup(value);
220 else
221 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
222 } else if (!strcmp(name, "include"))
223 cgit_read_config(value, cgit_global_config_cb);
224}
225
226void cgit_querystring_cb(const char *name, const char *value)
227{
228 if (!strcmp(name,"r")) {
229 cgit_query_repo = xstrdup(value);
230 cgit_repo = cgit_get_repoinfo(value);
231 } else if (!strcmp(name, "p")) {
232 cgit_query_page = xstrdup(value);
233 cgit_cmd = cgit_get_cmd_index(value);
234 } else if (!strcmp(name, "url")) {
235 cgit_parse_url(value);
236 } else if (!strcmp(name, "qt")) {
237 cgit_query_grep = xstrdup(value);
238 } else if (!strcmp(name, "q")) {
239 cgit_query_search = xstrdup(value);
240 } else if (!strcmp(name, "h")) {
241 cgit_query_head = xstrdup(value);
242 cgit_query_has_symref = 1;
243 } else if (!strcmp(name, "id")) {
244 cgit_query_sha1 = xstrdup(value);
245 cgit_query_has_sha1 = 1;
246 } else if (!strcmp(name, "id2")) {
247 cgit_query_sha2 = xstrdup(value);
248 cgit_query_has_sha1 = 1;
249 } else if (!strcmp(name, "ofs")) {
250 cgit_query_ofs = atoi(value);
251 } else if (!strcmp(name, "path")) {
252 cgit_query_path = trim_end(value, '/');
253 } else if (!strcmp(name, "name")) {
254 cgit_query_name = xstrdup(value);
255 }
256}
257
258void *cgit_free_commitinfo(struct commitinfo *info)
259{
260 free(info->author);
261 free(info->author_email);
262 free(info->committer);
263 free(info->committer_email);
264 free(info->subject);
265 free(info);
266 return NULL;
267}
268
269int hextoint(char c)
270{
271 if (c >= 'a' && c <= 'f')
272 return 10 + c - 'a';
273 else if (c >= 'A' && c <= 'F')
274 return 10 + c - 'A';
275 else if (c >= '0' && c <= '9')
276 return c - '0';
277 else
278 return -1;
279}
280
281char *trim_end(const char *str, char c)
282{
283 int len;
284 char *s, *t;
285
286 if (str == NULL)
287 return NULL;
288 t = (char *)str;
289 len = strlen(t);
290 while(len > 0 && t[len - 1] == c)
291 len--;
292
293 if (len == 0)
294 return NULL;
295
296 c = t[len];
297 t[len] = '\0';
298 s = xstrdup(t);
299 t[len] = c;
300 return s;
301}
302
303void cgit_add_ref(struct reflist *list, struct refinfo *ref)
304{
305 size_t size;
306
307 if (list->count >= list->alloc) {
308 list->alloc += (list->alloc ? list->alloc : 4);
309 size = list->alloc * sizeof(struct refinfo *);
310 list->refs = xrealloc(list->refs, size);
311 }
312 list->refs[list->count++] = ref;
313}
314
315struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
316{
317 struct refinfo *ref;
318
319 ref = xmalloc(sizeof (struct refinfo));
320 ref->refname = xstrdup(refname);
321 ref->object = parse_object(sha1);
322 switch (ref->object->type) {
323 case OBJ_TAG:
324 ref->tag = cgit_parse_tag((struct tag *)ref->object);
325 break;
326 case OBJ_COMMIT:
327 ref->commit = cgit_parse_commit((struct commit *)ref->object);
328 break;
329 }
330 return ref;
331}
332
333int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
334 void *cb_data)
335{
336 struct reflist *list = (struct reflist *)cb_data;
337 struct refinfo *info = cgit_mk_refinfo(refname, sha1);
338
339 if (info)
340 cgit_add_ref(list, info);
341 return 0;
342}
343
344void cgit_diff_tree_cb(struct diff_queue_struct *q,
345 struct diff_options *options, void *data)
346{
347 int i;
348
349 for (i = 0; i < q->nr; i++) {
350 if (q->queue[i]->status == 'U')
351 continue;
352 ((filepair_fn)data)(q->queue[i]);
353 }
354}
355
356static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
357{
358 enum object_type type;
359
360 if (is_null_sha1(sha1)) {
361 file->ptr = (char *)"";
362 file->size = 0;
363 } else {
364 file->ptr = read_sha1_file(sha1, &type,
365 (unsigned long *)&file->size);
366 }
367 return 1;
368}
369
370/*
371 * Receive diff-buffers from xdiff and concatenate them as
372 * needed across multiple callbacks.
373 *
374 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
375 * ripped from git and modified to use globals instead of
376 * a special callback-struct.
377 */
378char *diffbuf = NULL;
379int buflen = 0;
380
381int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
382{
383 int i;
384
385 for (i = 0; i < nbuf; i++) {
386 if (mb[i].ptr[mb[i].size-1] != '\n') {
387 /* Incomplete line */
388 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
389 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
390 buflen += mb[i].size;
391 continue;
392 }
393
394 /* we have a complete line */
395 if (!diffbuf) {
396 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
397 continue;
398 }
399 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
400 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
401 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
402 free(diffbuf);
403 diffbuf = NULL;
404 buflen = 0;
405 }
406 if (diffbuf) {
407 ((linediff_fn)priv)(diffbuf, buflen);
408 free(diffbuf);
409 diffbuf = NULL;
410 buflen = 0;
411 }
412 return 0;
413}
414
415int cgit_diff_files(const unsigned char *old_sha1,
416 const unsigned char *new_sha1,
417 linediff_fn fn)
418{
419 mmfile_t file1, file2;
420 xpparam_t diff_params;
421 xdemitconf_t emit_params;
422 xdemitcb_t emit_cb;
423
424 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
425 return 1;
426
427 diff_params.flags = XDF_NEED_MINIMAL;
428 emit_params.ctxlen = 3;
429 emit_params.flags = XDL_EMIT_FUNCNAMES;
430 emit_params.find_func = NULL;
431 emit_cb.outf = filediff_cb;
432 emit_cb.priv = fn;
433 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
434 return 0;
435}
436
437void cgit_diff_tree(const unsigned char *old_sha1,
438 const unsigned char *new_sha1,
439 filepair_fn fn, const char *prefix)
440{
441 struct diff_options opt;
442 int ret;
443 int prefixlen;
444
445 diff_setup(&opt);
446 opt.output_format = DIFF_FORMAT_CALLBACK;
447 opt.detect_rename = 1;
448 opt.rename_limit = cgit_renamelimit;
449 opt.recursive = 1;
450 opt.format_callback = cgit_diff_tree_cb;
451 opt.format_callback_data = fn;
452 if (prefix) {
453 opt.nr_paths = 1;
454 opt.paths = &prefix;
455 prefixlen = strlen(prefix);
456 opt.pathlens = &prefixlen;
457 }
458 diff_setup_done(&opt);
459
460 if (old_sha1 && !is_null_sha1(old_sha1))
461 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
462 else
463 ret = diff_root_tree_sha1(new_sha1, "", &opt);
464 diffcore_std(&opt);
465 diff_flush(&opt);
466}
467
468void cgit_diff_commit(struct commit *commit, filepair_fn fn)
469{
470 unsigned char *old_sha1 = NULL;
471
472 if (commit->parents)
473 old_sha1 = commit->parents->item->object.sha1;
474 cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
475}