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_index_info = NULL;
22char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
23char *cgit_module_link = "./?repo=%s&page=commit&id=%s";
24char *cgit_agefile = "info/web/last-modified";
25char *cgit_virtual_root = NULL;
26char *cgit_script_name = CGIT_SCRIPT_NAME;
27char *cgit_cache_root = CGIT_CACHE_ROOT;
28char *cgit_repo_group = NULL;
29char *cgit_robots = "index, nofollow";
30
31int cgit_nocache = 0;
32int cgit_snapshots = 0;
33int cgit_enable_index_links = 0;
34int cgit_enable_log_filecount = 0;
35int cgit_enable_log_linecount = 0;
36int cgit_max_lock_attempts = 5;
37int cgit_cache_root_ttl = 5;
38int cgit_cache_repo_ttl = 5;
39int cgit_cache_dynamic_ttl = 5;
40int cgit_cache_static_ttl = -1;
41int cgit_cache_max_create_time = 5;
42int cgit_summary_log = 0;
43int cgit_summary_tags = 0;
44int cgit_summary_branches = 0;
45int cgit_renamelimit = -1;
46
47int cgit_max_msg_len = 60;
48int cgit_max_repodesc_len = 60;
49int cgit_max_commit_count = 50;
50
51int cgit_query_has_symref = 0;
52int cgit_query_has_sha1 = 0;
53
54char *cgit_querystring = NULL;
55char *cgit_query_repo = NULL;
56char *cgit_query_page = NULL;
57char *cgit_query_head = NULL;
58char *cgit_query_search = NULL;
59char *cgit_query_grep = NULL;
60char *cgit_query_sha1 = NULL;
61char *cgit_query_sha2 = NULL;
62char *cgit_query_path = NULL;
63char *cgit_query_name = NULL;
64int cgit_query_ofs = 0;
65
66int htmlfd = 0;
67
68
69int cgit_get_cmd_index(const char *cmd)
70{
71 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
72 "snapshot", "tag", "refs", NULL};
73 int i;
74
75 for(i = 0; cmds[i]; i++)
76 if (!strcmp(cmd, cmds[i]))
77 return i + 1;
78 return 0;
79}
80
81int chk_zero(int result, char *msg)
82{
83 if (result != 0)
84 die("%s: %s", msg, strerror(errno));
85 return result;
86}
87
88int chk_positive(int result, char *msg)
89{
90 if (result <= 0)
91 die("%s: %s", msg, strerror(errno));
92 return result;
93}
94
95int chk_non_negative(int result, char *msg)
96{
97 if (result < 0)
98 die("%s: %s",msg, strerror(errno));
99 return result;
100}
101
102struct repoinfo *add_repo(const char *url)
103{
104 struct repoinfo *ret;
105
106 if (++cgit_repolist.count > cgit_repolist.length) {
107 if (cgit_repolist.length == 0)
108 cgit_repolist.length = 8;
109 else
110 cgit_repolist.length *= 2;
111 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
112 cgit_repolist.length *
113 sizeof(struct repoinfo));
114 }
115
116 ret = &cgit_repolist.repos[cgit_repolist.count-1];
117 ret->url = trim_end(url, '/');
118 ret->name = ret->url;
119 ret->path = NULL;
120 ret->desc = NULL;
121 ret->owner = NULL;
122 ret->group = cgit_repo_group;
123 ret->defbranch = "master";
124 ret->snapshots = cgit_snapshots;
125 ret->enable_log_filecount = cgit_enable_log_filecount;
126 ret->enable_log_linecount = cgit_enable_log_linecount;
127 ret->module_link = cgit_module_link;
128 ret->readme = NULL;
129 return ret;
130}
131
132struct repoinfo *cgit_get_repoinfo(const char *url)
133{
134 int i;
135 struct repoinfo *repo;
136
137 for (i=0; i<cgit_repolist.count; i++) {
138 repo = &cgit_repolist.repos[i];
139 if (!strcmp(repo->url, url))
140 return repo;
141 }
142 return NULL;
143}
144
145void cgit_global_config_cb(const char *name, const char *value)
146{
147 if (!strcmp(name, "root-title"))
148 cgit_root_title = xstrdup(value);
149 else if (!strcmp(name, "css"))
150 cgit_css = xstrdup(value);
151 else if (!strcmp(name, "logo"))
152 cgit_logo = xstrdup(value);
153 else if (!strcmp(name, "index-header"))
154 cgit_index_header = xstrdup(value);
155 else if (!strcmp(name, "index-info"))
156 cgit_index_info = xstrdup(value);
157 else if (!strcmp(name, "logo-link"))
158 cgit_logo_link = xstrdup(value);
159 else if (!strcmp(name, "module-link"))
160 cgit_module_link = xstrdup(value);
161 else if (!strcmp(name, "virtual-root")) {
162 cgit_virtual_root = trim_end(value, '/');
163 if (!cgit_virtual_root && (!strcmp(value, "/")))
164 cgit_virtual_root = "";
165 } else if (!strcmp(name, "nocache"))
166 cgit_nocache = atoi(value);
167 else if (!strcmp(name, "snapshots"))
168 cgit_snapshots = cgit_parse_snapshots_mask(value);
169 else if (!strcmp(name, "enable-index-links"))
170 cgit_enable_index_links = atoi(value);
171 else if (!strcmp(name, "enable-log-filecount"))
172 cgit_enable_log_filecount = atoi(value);
173 else if (!strcmp(name, "enable-log-linecount"))
174 cgit_enable_log_linecount = atoi(value);
175 else if (!strcmp(name, "cache-root"))
176 cgit_cache_root = xstrdup(value);
177 else if (!strcmp(name, "cache-root-ttl"))
178 cgit_cache_root_ttl = atoi(value);
179 else if (!strcmp(name, "cache-repo-ttl"))
180 cgit_cache_repo_ttl = atoi(value);
181 else if (!strcmp(name, "cache-static-ttl"))
182 cgit_cache_static_ttl = atoi(value);
183 else if (!strcmp(name, "cache-dynamic-ttl"))
184 cgit_cache_dynamic_ttl = atoi(value);
185 else if (!strcmp(name, "max-message-length"))
186 cgit_max_msg_len = atoi(value);
187 else if (!strcmp(name, "max-repodesc-length"))
188 cgit_max_repodesc_len = atoi(value);
189 else if (!strcmp(name, "max-commit-count"))
190 cgit_max_commit_count = atoi(value);
191 else if (!strcmp(name, "summary-log"))
192 cgit_summary_log = atoi(value);
193 else if (!strcmp(name, "summary-branches"))
194 cgit_summary_branches = atoi(value);
195 else if (!strcmp(name, "summary-tags"))
196 cgit_summary_tags = atoi(value);
197 else if (!strcmp(name, "agefile"))
198 cgit_agefile = xstrdup(value);
199 else if (!strcmp(name, "renamelimit"))
200 cgit_renamelimit = atoi(value);
201 else if (!strcmp(name, "robots"))
202 cgit_robots = xstrdup(value);
203 else if (!strcmp(name, "repo.group"))
204 cgit_repo_group = xstrdup(value);
205 else if (!strcmp(name, "repo.url"))
206 cgit_repo = add_repo(value);
207 else if (!strcmp(name, "repo.name"))
208 cgit_repo->name = xstrdup(value);
209 else if (cgit_repo && !strcmp(name, "repo.path"))
210 cgit_repo->path = trim_end(value, '/');
211 else if (cgit_repo && !strcmp(name, "repo.desc"))
212 cgit_repo->desc = xstrdup(value);
213 else if (cgit_repo && !strcmp(name, "repo.owner"))
214 cgit_repo->owner = xstrdup(value);
215 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
216 cgit_repo->defbranch = xstrdup(value);
217 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
218 cgit_repo->snapshots = cgit_snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
219 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
220 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
221 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
222 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
223 else if (cgit_repo && !strcmp(name, "repo.module-link"))
224 cgit_repo->module_link= xstrdup(value);
225 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
226 if (*value == '/')
227 cgit_repo->readme = xstrdup(value);
228 else
229 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
230 } else if (!strcmp(name, "include"))
231 cgit_read_config(value, cgit_global_config_cb);
232}
233
234void cgit_querystring_cb(const char *name, const char *value)
235{
236 if (!strcmp(name,"r")) {
237 cgit_query_repo = xstrdup(value);
238 cgit_repo = cgit_get_repoinfo(value);
239 } else if (!strcmp(name, "p")) {
240 cgit_query_page = xstrdup(value);
241 cgit_cmd = cgit_get_cmd_index(value);
242 } else if (!strcmp(name, "url")) {
243 cgit_parse_url(value);
244 } else if (!strcmp(name, "qt")) {
245 cgit_query_grep = xstrdup(value);
246 } else if (!strcmp(name, "q")) {
247 cgit_query_search = xstrdup(value);
248 } else if (!strcmp(name, "h")) {
249 cgit_query_head = xstrdup(value);
250 cgit_query_has_symref = 1;
251 } else if (!strcmp(name, "id")) {
252 cgit_query_sha1 = xstrdup(value);
253 cgit_query_has_sha1 = 1;
254 } else if (!strcmp(name, "id2")) {
255 cgit_query_sha2 = xstrdup(value);
256 cgit_query_has_sha1 = 1;
257 } else if (!strcmp(name, "ofs")) {
258 cgit_query_ofs = atoi(value);
259 } else if (!strcmp(name, "path")) {
260 cgit_query_path = trim_end(value, '/');
261 } else if (!strcmp(name, "name")) {
262 cgit_query_name = xstrdup(value);
263 }
264}
265
266void *cgit_free_commitinfo(struct commitinfo *info)
267{
268 free(info->author);
269 free(info->author_email);
270 free(info->committer);
271 free(info->committer_email);
272 free(info->subject);
273 free(info->msg);
274 free(info->msg_encoding);
275 free(info);
276 return NULL;
277}
278
279int hextoint(char c)
280{
281 if (c >= 'a' && c <= 'f')
282 return 10 + c - 'a';
283 else if (c >= 'A' && c <= 'F')
284 return 10 + c - 'A';
285 else if (c >= '0' && c <= '9')
286 return c - '0';
287 else
288 return -1;
289}
290
291char *trim_end(const char *str, char c)
292{
293 int len;
294 char *s, *t;
295
296 if (str == NULL)
297 return NULL;
298 t = (char *)str;
299 len = strlen(t);
300 while(len > 0 && t[len - 1] == c)
301 len--;
302
303 if (len == 0)
304 return NULL;
305
306 c = t[len];
307 t[len] = '\0';
308 s = xstrdup(t);
309 t[len] = c;
310 return s;
311}
312
313char *strlpart(char *txt, int maxlen)
314{
315 char *result;
316
317 if (!txt)
318 return txt;
319
320 if (strlen(txt) <= maxlen)
321 return txt;
322 result = xmalloc(maxlen + 1);
323 memcpy(result, txt, maxlen - 3);
324 result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
325 result[maxlen] = '\0';
326 return result;
327}
328
329char *strrpart(char *txt, int maxlen)
330{
331 char *result;
332
333 if (!txt)
334 return txt;
335
336 if (strlen(txt) <= maxlen)
337 return txt;
338 result = xmalloc(maxlen + 1);
339 memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
340 result[0] = result[1] = result[2] = '.';
341 return result;
342}
343
344void cgit_add_ref(struct reflist *list, struct refinfo *ref)
345{
346 size_t size;
347
348 if (list->count >= list->alloc) {
349 list->alloc += (list->alloc ? list->alloc : 4);
350 size = list->alloc * sizeof(struct refinfo *);
351 list->refs = xrealloc(list->refs, size);
352 }
353 list->refs[list->count++] = ref;
354}
355
356struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
357{
358 struct refinfo *ref;
359
360 ref = xmalloc(sizeof (struct refinfo));
361 ref->refname = xstrdup(refname);
362 ref->object = parse_object(sha1);
363 switch (ref->object->type) {
364 case OBJ_TAG:
365 ref->tag = cgit_parse_tag((struct tag *)ref->object);
366 break;
367 case OBJ_COMMIT:
368 ref->commit = cgit_parse_commit((struct commit *)ref->object);
369 break;
370 }
371 return ref;
372}
373
374int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
375 void *cb_data)
376{
377 struct reflist *list = (struct reflist *)cb_data;
378 struct refinfo *info = cgit_mk_refinfo(refname, sha1);
379
380 if (info)
381 cgit_add_ref(list, info);
382 return 0;
383}
384
385void cgit_diff_tree_cb(struct diff_queue_struct *q,
386 struct diff_options *options, void *data)
387{
388 int i;
389
390 for (i = 0; i < q->nr; i++) {
391 if (q->queue[i]->status == 'U')
392 continue;
393 ((filepair_fn)data)(q->queue[i]);
394 }
395}
396
397static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
398{
399 enum object_type type;
400
401 if (is_null_sha1(sha1)) {
402 file->ptr = (char *)"";
403 file->size = 0;
404 } else {
405 file->ptr = read_sha1_file(sha1, &type,
406 (unsigned long *)&file->size);
407 }
408 return 1;
409}
410
411/*
412 * Receive diff-buffers from xdiff and concatenate them as
413 * needed across multiple callbacks.
414 *
415 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
416 * ripped from git and modified to use globals instead of
417 * a special callback-struct.
418 */
419char *diffbuf = NULL;
420int buflen = 0;
421
422int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
423{
424 int i;
425
426 for (i = 0; i < nbuf; i++) {
427 if (mb[i].ptr[mb[i].size-1] != '\n') {
428 /* Incomplete line */
429 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
430 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
431 buflen += mb[i].size;
432 continue;
433 }
434
435 /* we have a complete line */
436 if (!diffbuf) {
437 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
438 continue;
439 }
440 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
441 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
442 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
443 free(diffbuf);
444 diffbuf = NULL;
445 buflen = 0;
446 }
447 if (diffbuf) {
448 ((linediff_fn)priv)(diffbuf, buflen);
449 free(diffbuf);
450 diffbuf = NULL;
451 buflen = 0;
452 }
453 return 0;
454}
455
456int cgit_diff_files(const unsigned char *old_sha1,
457 const unsigned char *new_sha1,
458 linediff_fn fn)
459{
460 mmfile_t file1, file2;
461 xpparam_t diff_params;
462 xdemitconf_t emit_params;
463 xdemitcb_t emit_cb;
464
465 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
466 return 1;
467
468 diff_params.flags = XDF_NEED_MINIMAL;
469 emit_params.ctxlen = 3;
470 emit_params.flags = XDL_EMIT_FUNCNAMES;
471 emit_params.find_func = NULL;
472 emit_cb.outf = filediff_cb;
473 emit_cb.priv = fn;
474 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
475 return 0;
476}
477
478void cgit_diff_tree(const unsigned char *old_sha1,
479 const unsigned char *new_sha1,
480 filepair_fn fn, const char *prefix)
481{
482 struct diff_options opt;
483 int ret;
484 int prefixlen;
485
486 diff_setup(&opt);
487 opt.output_format = DIFF_FORMAT_CALLBACK;
488 opt.detect_rename = 1;
489 opt.rename_limit = cgit_renamelimit;
490 opt.recursive = 1;
491 opt.format_callback = cgit_diff_tree_cb;
492 opt.format_callback_data = fn;
493 if (prefix) {
494 opt.nr_paths = 1;
495 opt.paths = &prefix;
496 prefixlen = strlen(prefix);
497 opt.pathlens = &prefixlen;
498 }
499 diff_setup_done(&opt);
500
501 if (old_sha1 && !is_null_sha1(old_sha1))
502 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
503 else
504 ret = diff_root_tree_sha1(new_sha1, "", &opt);
505 diffcore_std(&opt);
506 diff_flush(&opt);
507}
508
509void cgit_diff_commit(struct commit *commit, filepair_fn fn)
510{
511 unsigned char *old_sha1 = NULL;
512
513 if (commit->parents)
514 old_sha1 = commit->parents->item->object.sha1;
515 cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
516}