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