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";
30char *cgit_clone_prefix = NULL;
31
32int cgit_nocache = 0;
33int cgit_snapshots = 0;
34int cgit_enable_index_links = 0;
35int cgit_enable_log_filecount = 0;
36int cgit_enable_log_linecount = 0;
37int cgit_max_lock_attempts = 5;
38int cgit_cache_root_ttl = 5;
39int cgit_cache_repo_ttl = 5;
40int cgit_cache_dynamic_ttl = 5;
41int cgit_cache_static_ttl = -1;
42int cgit_cache_max_create_time = 5;
43int cgit_summary_log = 0;
44int cgit_summary_tags = 0;
45int cgit_summary_branches = 0;
46int cgit_renamelimit = -1;
47
48int cgit_max_msg_len = 60;
49int cgit_max_repodesc_len = 60;
50int cgit_max_commit_count = 50;
51
52int cgit_query_has_symref = 0;
53int cgit_query_has_sha1 = 0;
54
55char *cgit_querystring = NULL;
56char *cgit_query_repo = NULL;
57char *cgit_query_page = NULL;
58char *cgit_query_head = NULL;
59char *cgit_query_search = NULL;
60char *cgit_query_grep = NULL;
61char *cgit_query_sha1 = NULL;
62char *cgit_query_sha2 = NULL;
63char *cgit_query_path = NULL;
64char *cgit_query_name = NULL;
65int cgit_query_ofs = 0;
66
67int htmlfd = 0;
68
69
70int cgit_get_cmd_index(const char *cmd)
71{
72 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
73 "snapshot", "tag", "refs", "patch", NULL};
74 int i;
75
76 for(i = 0; cmds[i]; i++)
77 if (!strcmp(cmd, cmds[i]))
78 return i + 1;
79 return 0;
80}
81
82int chk_zero(int result, char *msg)
83{
84 if (result != 0)
85 die("%s: %s", msg, strerror(errno));
86 return result;
87}
88
89int chk_positive(int result, char *msg)
90{
91 if (result <= 0)
92 die("%s: %s", msg, strerror(errno));
93 return result;
94}
95
96int chk_non_negative(int result, char *msg)
97{
98 if (result < 0)
99 die("%s: %s",msg, strerror(errno));
100 return result;
101}
102
103struct repoinfo *add_repo(const char *url)
104{
105 struct repoinfo *ret;
106
107 if (++cgit_repolist.count > cgit_repolist.length) {
108 if (cgit_repolist.length == 0)
109 cgit_repolist.length = 8;
110 else
111 cgit_repolist.length *= 2;
112 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
113 cgit_repolist.length *
114 sizeof(struct repoinfo));
115 }
116
117 ret = &cgit_repolist.repos[cgit_repolist.count-1];
118 ret->url = trim_end(url, '/');
119 ret->name = ret->url;
120 ret->path = NULL;
121 ret->desc = "[no description]";
122 ret->owner = NULL;
123 ret->group = cgit_repo_group;
124 ret->defbranch = "master";
125 ret->snapshots = cgit_snapshots;
126 ret->enable_log_filecount = cgit_enable_log_filecount;
127 ret->enable_log_linecount = cgit_enable_log_linecount;
128 ret->module_link = cgit_module_link;
129 ret->readme = NULL;
130 return ret;
131}
132
133struct repoinfo *cgit_get_repoinfo(const char *url)
134{
135 int i;
136 struct repoinfo *repo;
137
138 for (i=0; i<cgit_repolist.count; i++) {
139 repo = &cgit_repolist.repos[i];
140 if (!strcmp(repo->url, url))
141 return repo;
142 }
143 return NULL;
144}
145
146void cgit_global_config_cb(const char *name, const char *value)
147{
148 if (!strcmp(name, "root-title"))
149 cgit_root_title = xstrdup(value);
150 else if (!strcmp(name, "css"))
151 cgit_css = xstrdup(value);
152 else if (!strcmp(name, "logo"))
153 cgit_logo = xstrdup(value);
154 else if (!strcmp(name, "index-header"))
155 cgit_index_header = xstrdup(value);
156 else if (!strcmp(name, "index-info"))
157 cgit_index_info = xstrdup(value);
158 else if (!strcmp(name, "logo-link"))
159 cgit_logo_link = xstrdup(value);
160 else if (!strcmp(name, "module-link"))
161 cgit_module_link = xstrdup(value);
162 else if (!strcmp(name, "virtual-root")) {
163 cgit_virtual_root = trim_end(value, '/');
164 if (!cgit_virtual_root && (!strcmp(value, "/")))
165 cgit_virtual_root = "";
166 } else if (!strcmp(name, "nocache"))
167 cgit_nocache = atoi(value);
168 else if (!strcmp(name, "snapshots"))
169 cgit_snapshots = cgit_parse_snapshots_mask(value);
170 else if (!strcmp(name, "enable-index-links"))
171 cgit_enable_index_links = atoi(value);
172 else if (!strcmp(name, "enable-log-filecount"))
173 cgit_enable_log_filecount = atoi(value);
174 else if (!strcmp(name, "enable-log-linecount"))
175 cgit_enable_log_linecount = atoi(value);
176 else if (!strcmp(name, "cache-root"))
177 cgit_cache_root = xstrdup(value);
178 else if (!strcmp(name, "cache-root-ttl"))
179 cgit_cache_root_ttl = atoi(value);
180 else if (!strcmp(name, "cache-repo-ttl"))
181 cgit_cache_repo_ttl = atoi(value);
182 else if (!strcmp(name, "cache-static-ttl"))
183 cgit_cache_static_ttl = atoi(value);
184 else if (!strcmp(name, "cache-dynamic-ttl"))
185 cgit_cache_dynamic_ttl = atoi(value);
186 else if (!strcmp(name, "max-message-length"))
187 cgit_max_msg_len = atoi(value);
188 else if (!strcmp(name, "max-repodesc-length"))
189 cgit_max_repodesc_len = atoi(value);
190 else if (!strcmp(name, "max-commit-count"))
191 cgit_max_commit_count = atoi(value);
192 else if (!strcmp(name, "summary-log"))
193 cgit_summary_log = atoi(value);
194 else if (!strcmp(name, "summary-branches"))
195 cgit_summary_branches = atoi(value);
196 else if (!strcmp(name, "summary-tags"))
197 cgit_summary_tags = atoi(value);
198 else if (!strcmp(name, "agefile"))
199 cgit_agefile = xstrdup(value);
200 else if (!strcmp(name, "renamelimit"))
201 cgit_renamelimit = atoi(value);
202 else if (!strcmp(name, "robots"))
203 cgit_robots = xstrdup(value);
204 else if (!strcmp(name, "clone-prefix"))
205 cgit_clone_prefix = xstrdup(value);
206 else if (!strcmp(name, "repo.group"))
207 cgit_repo_group = xstrdup(value);
208 else if (!strcmp(name, "repo.url"))
209 cgit_repo = add_repo(value);
210 else if (!strcmp(name, "repo.name"))
211 cgit_repo->name = xstrdup(value);
212 else if (cgit_repo && !strcmp(name, "repo.path"))
213 cgit_repo->path = trim_end(value, '/');
214 else if (cgit_repo && !strcmp(name, "repo.clone-url"))
215 cgit_repo->clone_url = xstrdup(value);
216 else if (cgit_repo && !strcmp(name, "repo.desc"))
217 cgit_repo->desc = xstrdup(value);
218 else if (cgit_repo && !strcmp(name, "repo.owner"))
219 cgit_repo->owner = xstrdup(value);
220 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
221 cgit_repo->defbranch = xstrdup(value);
222 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
223 cgit_repo->snapshots = cgit_snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
224 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
225 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
226 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
227 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
228 else if (cgit_repo && !strcmp(name, "repo.module-link"))
229 cgit_repo->module_link= xstrdup(value);
230 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
231 if (*value == '/')
232 cgit_repo->readme = xstrdup(value);
233 else
234 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
235 } else if (!strcmp(name, "include"))
236 cgit_read_config(value, cgit_global_config_cb);
237}
238
239void cgit_querystring_cb(const char *name, const char *value)
240{
241 if (!strcmp(name,"r")) {
242 cgit_query_repo = xstrdup(value);
243 cgit_repo = cgit_get_repoinfo(value);
244 } else if (!strcmp(name, "p")) {
245 cgit_query_page = xstrdup(value);
246 cgit_cmd = cgit_get_cmd_index(value);
247 } else if (!strcmp(name, "url")) {
248 cgit_parse_url(value);
249 } else if (!strcmp(name, "qt")) {
250 cgit_query_grep = xstrdup(value);
251 } else if (!strcmp(name, "q")) {
252 cgit_query_search = xstrdup(value);
253 } else if (!strcmp(name, "h")) {
254 cgit_query_head = xstrdup(value);
255 cgit_query_has_symref = 1;
256 } else if (!strcmp(name, "id")) {
257 cgit_query_sha1 = xstrdup(value);
258 cgit_query_has_sha1 = 1;
259 } else if (!strcmp(name, "id2")) {
260 cgit_query_sha2 = xstrdup(value);
261 cgit_query_has_sha1 = 1;
262 } else if (!strcmp(name, "ofs")) {
263 cgit_query_ofs = atoi(value);
264 } else if (!strcmp(name, "path")) {
265 cgit_query_path = trim_end(value, '/');
266 } else if (!strcmp(name, "name")) {
267 cgit_query_name = xstrdup(value);
268 }
269}
270
271void *cgit_free_commitinfo(struct commitinfo *info)
272{
273 free(info->author);
274 free(info->author_email);
275 free(info->committer);
276 free(info->committer_email);
277 free(info->subject);
278 free(info->msg);
279 free(info->msg_encoding);
280 free(info);
281 return NULL;
282}
283
284int hextoint(char c)
285{
286 if (c >= 'a' && c <= 'f')
287 return 10 + c - 'a';
288 else if (c >= 'A' && c <= 'F')
289 return 10 + c - 'A';
290 else if (c >= '0' && c <= '9')
291 return c - '0';
292 else
293 return -1;
294}
295
296char *trim_end(const char *str, char c)
297{
298 int len;
299 char *s, *t;
300
301 if (str == NULL)
302 return NULL;
303 t = (char *)str;
304 len = strlen(t);
305 while(len > 0 && t[len - 1] == c)
306 len--;
307
308 if (len == 0)
309 return NULL;
310
311 c = t[len];
312 t[len] = '\0';
313 s = xstrdup(t);
314 t[len] = c;
315 return s;
316}
317
318char *strlpart(char *txt, int maxlen)
319{
320 char *result;
321
322 if (!txt)
323 return txt;
324
325 if (strlen(txt) <= maxlen)
326 return txt;
327 result = xmalloc(maxlen + 1);
328 memcpy(result, txt, maxlen - 3);
329 result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
330 result[maxlen] = '\0';
331 return result;
332}
333
334char *strrpart(char *txt, int maxlen)
335{
336 char *result;
337
338 if (!txt)
339 return txt;
340
341 if (strlen(txt) <= maxlen)
342 return txt;
343 result = xmalloc(maxlen + 1);
344 memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
345 result[0] = result[1] = result[2] = '.';
346 return result;
347}
348
349void cgit_add_ref(struct reflist *list, struct refinfo *ref)
350{
351 size_t size;
352
353 if (list->count >= list->alloc) {
354 list->alloc += (list->alloc ? list->alloc : 4);
355 size = list->alloc * sizeof(struct refinfo *);
356 list->refs = xrealloc(list->refs, size);
357 }
358 list->refs[list->count++] = ref;
359}
360
361struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
362{
363 struct refinfo *ref;
364
365 ref = xmalloc(sizeof (struct refinfo));
366 ref->refname = xstrdup(refname);
367 ref->object = parse_object(sha1);
368 switch (ref->object->type) {
369 case OBJ_TAG:
370 ref->tag = cgit_parse_tag((struct tag *)ref->object);
371 break;
372 case OBJ_COMMIT:
373 ref->commit = cgit_parse_commit((struct commit *)ref->object);
374 break;
375 }
376 return ref;
377}
378
379int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
380 void *cb_data)
381{
382 struct reflist *list = (struct reflist *)cb_data;
383 struct refinfo *info = cgit_mk_refinfo(refname, sha1);
384
385 if (info)
386 cgit_add_ref(list, info);
387 return 0;
388}
389
390void cgit_diff_tree_cb(struct diff_queue_struct *q,
391 struct diff_options *options, void *data)
392{
393 int i;
394
395 for (i = 0; i < q->nr; i++) {
396 if (q->queue[i]->status == 'U')
397 continue;
398 ((filepair_fn)data)(q->queue[i]);
399 }
400}
401
402static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
403{
404 enum object_type type;
405
406 if (is_null_sha1(sha1)) {
407 file->ptr = (char *)"";
408 file->size = 0;
409 } else {
410 file->ptr = read_sha1_file(sha1, &type,
411 (unsigned long *)&file->size);
412 }
413 return 1;
414}
415
416/*
417 * Receive diff-buffers from xdiff and concatenate them as
418 * needed across multiple callbacks.
419 *
420 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
421 * ripped from git and modified to use globals instead of
422 * a special callback-struct.
423 */
424char *diffbuf = NULL;
425int buflen = 0;
426
427int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
428{
429 int i;
430
431 for (i = 0; i < nbuf; i++) {
432 if (mb[i].ptr[mb[i].size-1] != '\n') {
433 /* Incomplete line */
434 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
435 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
436 buflen += mb[i].size;
437 continue;
438 }
439
440 /* we have a complete line */
441 if (!diffbuf) {
442 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
443 continue;
444 }
445 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
446 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
447 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
448 free(diffbuf);
449 diffbuf = NULL;
450 buflen = 0;
451 }
452 if (diffbuf) {
453 ((linediff_fn)priv)(diffbuf, buflen);
454 free(diffbuf);
455 diffbuf = NULL;
456 buflen = 0;
457 }
458 return 0;
459}
460
461int cgit_diff_files(const unsigned char *old_sha1,
462 const unsigned char *new_sha1,
463 linediff_fn fn)
464{
465 mmfile_t file1, file2;
466 xpparam_t diff_params;
467 xdemitconf_t emit_params;
468 xdemitcb_t emit_cb;
469
470 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
471 return 1;
472
473 diff_params.flags = XDF_NEED_MINIMAL;
474 emit_params.ctxlen = 3;
475 emit_params.flags = XDL_EMIT_FUNCNAMES;
476 emit_params.find_func = NULL;
477 emit_cb.outf = filediff_cb;
478 emit_cb.priv = fn;
479 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
480 return 0;
481}
482
483void cgit_diff_tree(const unsigned char *old_sha1,
484 const unsigned char *new_sha1,
485 filepair_fn fn, const char *prefix)
486{
487 struct diff_options opt;
488 int ret;
489 int prefixlen;
490
491 diff_setup(&opt);
492 opt.output_format = DIFF_FORMAT_CALLBACK;
493 opt.detect_rename = 1;
494 opt.rename_limit = cgit_renamelimit;
495 DIFF_OPT_SET(&opt, RECURSIVE);
496 opt.format_callback = cgit_diff_tree_cb;
497 opt.format_callback_data = fn;
498 if (prefix) {
499 opt.nr_paths = 1;
500 opt.paths = &prefix;
501 prefixlen = strlen(prefix);
502 opt.pathlens = &prefixlen;
503 }
504 diff_setup_done(&opt);
505
506 if (old_sha1 && !is_null_sha1(old_sha1))
507 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
508 else
509 ret = diff_root_tree_sha1(new_sha1, "", &opt);
510 diffcore_std(&opt);
511 diff_flush(&opt);
512}
513
514void cgit_diff_commit(struct commit *commit, filepair_fn fn)
515{
516 unsigned char *old_sha1 = NULL;
517
518 if (commit->parents)
519 old_sha1 = commit->parents->item->object.sha1;
520 cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
521}