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;
13struct cgit_context ctx;
14int cgit_cmd;
15
16const char *cgit_version = CGIT_VERSION;
17
18char *cgit_root_title = "Git repository browser";
19char *cgit_css = "/cgit.css";
20char *cgit_logo = "/git-logo.png";
21char *cgit_index_header = NULL;
22char *cgit_index_info = NULL;
23char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
24char *cgit_module_link = "./?repo=%s&page=commit&id=%s";
25char *cgit_agefile = "info/web/last-modified";
26char *cgit_virtual_root = NULL;
27char *cgit_script_name = CGIT_SCRIPT_NAME;
28char *cgit_cache_root = CGIT_CACHE_ROOT;
29char *cgit_repo_group = NULL;
30char *cgit_robots = "index, nofollow";
31char *cgit_clone_prefix = NULL;
32
33int cgit_nocache = 0;
34int cgit_snapshots = 0;
35int cgit_enable_index_links = 0;
36int cgit_enable_log_filecount = 0;
37int cgit_enable_log_linecount = 0;
38int cgit_max_lock_attempts = 5;
39int cgit_cache_root_ttl = 5;
40int cgit_cache_repo_ttl = 5;
41int cgit_cache_dynamic_ttl = 5;
42int cgit_cache_static_ttl = -1;
43int cgit_cache_max_create_time = 5;
44int cgit_summary_log = 0;
45int cgit_summary_tags = 0;
46int cgit_summary_branches = 0;
47int cgit_renamelimit = -1;
48
49int cgit_max_msg_len = 60;
50int cgit_max_repodesc_len = 60;
51int cgit_max_commit_count = 50;
52
53int htmlfd = 0;
54
55int cgit_get_cmd_index(const char *cmd)
56{
57 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
58 "snapshot", "tag", "refs", "patch", NULL};
59 int i;
60
61 for(i = 0; cmds[i]; i++)
62 if (!strcmp(cmd, cmds[i]))
63 return i + 1;
64 return 0;
65}
66
67int chk_zero(int result, char *msg)
68{
69 if (result != 0)
70 die("%s: %s", msg, strerror(errno));
71 return result;
72}
73
74int chk_positive(int result, char *msg)
75{
76 if (result <= 0)
77 die("%s: %s", msg, strerror(errno));
78 return result;
79}
80
81int chk_non_negative(int result, char *msg)
82{
83 if (result < 0)
84 die("%s: %s",msg, strerror(errno));
85 return result;
86}
87
88struct repoinfo *add_repo(const char *url)
89{
90 struct repoinfo *ret;
91
92 if (++cgit_repolist.count > cgit_repolist.length) {
93 if (cgit_repolist.length == 0)
94 cgit_repolist.length = 8;
95 else
96 cgit_repolist.length *= 2;
97 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
98 cgit_repolist.length *
99 sizeof(struct repoinfo));
100 }
101
102 ret = &cgit_repolist.repos[cgit_repolist.count-1];
103 ret->url = trim_end(url, '/');
104 ret->name = ret->url;
105 ret->path = NULL;
106 ret->desc = "[no description]";
107 ret->owner = NULL;
108 ret->group = cgit_repo_group;
109 ret->defbranch = "master";
110 ret->snapshots = cgit_snapshots;
111 ret->enable_log_filecount = cgit_enable_log_filecount;
112 ret->enable_log_linecount = cgit_enable_log_linecount;
113 ret->module_link = cgit_module_link;
114 ret->readme = NULL;
115 return ret;
116}
117
118struct repoinfo *cgit_get_repoinfo(const char *url)
119{
120 int i;
121 struct repoinfo *repo;
122
123 for (i=0; i<cgit_repolist.count; i++) {
124 repo = &cgit_repolist.repos[i];
125 if (!strcmp(repo->url, url))
126 return repo;
127 }
128 return NULL;
129}
130
131void cgit_global_config_cb(const char *name, const char *value)
132{
133 if (!strcmp(name, "root-title"))
134 cgit_root_title = xstrdup(value);
135 else if (!strcmp(name, "css"))
136 cgit_css = xstrdup(value);
137 else if (!strcmp(name, "logo"))
138 cgit_logo = xstrdup(value);
139 else if (!strcmp(name, "index-header"))
140 cgit_index_header = xstrdup(value);
141 else if (!strcmp(name, "index-info"))
142 cgit_index_info = xstrdup(value);
143 else if (!strcmp(name, "logo-link"))
144 cgit_logo_link = xstrdup(value);
145 else if (!strcmp(name, "module-link"))
146 cgit_module_link = xstrdup(value);
147 else if (!strcmp(name, "virtual-root")) {
148 cgit_virtual_root = trim_end(value, '/');
149 if (!cgit_virtual_root && (!strcmp(value, "/")))
150 cgit_virtual_root = "";
151 } else if (!strcmp(name, "nocache"))
152 cgit_nocache = atoi(value);
153 else if (!strcmp(name, "snapshots"))
154 cgit_snapshots = cgit_parse_snapshots_mask(value);
155 else if (!strcmp(name, "enable-index-links"))
156 cgit_enable_index_links = atoi(value);
157 else if (!strcmp(name, "enable-log-filecount"))
158 cgit_enable_log_filecount = atoi(value);
159 else if (!strcmp(name, "enable-log-linecount"))
160 cgit_enable_log_linecount = atoi(value);
161 else if (!strcmp(name, "cache-root"))
162 cgit_cache_root = xstrdup(value);
163 else if (!strcmp(name, "cache-root-ttl"))
164 cgit_cache_root_ttl = atoi(value);
165 else if (!strcmp(name, "cache-repo-ttl"))
166 cgit_cache_repo_ttl = atoi(value);
167 else if (!strcmp(name, "cache-static-ttl"))
168 cgit_cache_static_ttl = atoi(value);
169 else if (!strcmp(name, "cache-dynamic-ttl"))
170 cgit_cache_dynamic_ttl = atoi(value);
171 else if (!strcmp(name, "max-message-length"))
172 cgit_max_msg_len = atoi(value);
173 else if (!strcmp(name, "max-repodesc-length"))
174 cgit_max_repodesc_len = atoi(value);
175 else if (!strcmp(name, "max-commit-count"))
176 cgit_max_commit_count = atoi(value);
177 else if (!strcmp(name, "summary-log"))
178 cgit_summary_log = atoi(value);
179 else if (!strcmp(name, "summary-branches"))
180 cgit_summary_branches = atoi(value);
181 else if (!strcmp(name, "summary-tags"))
182 cgit_summary_tags = atoi(value);
183 else if (!strcmp(name, "agefile"))
184 cgit_agefile = xstrdup(value);
185 else if (!strcmp(name, "renamelimit"))
186 cgit_renamelimit = atoi(value);
187 else if (!strcmp(name, "robots"))
188 cgit_robots = xstrdup(value);
189 else if (!strcmp(name, "clone-prefix"))
190 cgit_clone_prefix = xstrdup(value);
191 else if (!strcmp(name, "repo.group"))
192 cgit_repo_group = xstrdup(value);
193 else if (!strcmp(name, "repo.url"))
194 cgit_repo = add_repo(value);
195 else if (!strcmp(name, "repo.name"))
196 cgit_repo->name = xstrdup(value);
197 else if (cgit_repo && !strcmp(name, "repo.path"))
198 cgit_repo->path = trim_end(value, '/');
199 else if (cgit_repo && !strcmp(name, "repo.clone-url"))
200 cgit_repo->clone_url = xstrdup(value);
201 else if (cgit_repo && !strcmp(name, "repo.desc"))
202 cgit_repo->desc = xstrdup(value);
203 else if (cgit_repo && !strcmp(name, "repo.owner"))
204 cgit_repo->owner = xstrdup(value);
205 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
206 cgit_repo->defbranch = xstrdup(value);
207 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
208 cgit_repo->snapshots = cgit_snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
209 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
210 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
211 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
212 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
213 else if (cgit_repo && !strcmp(name, "repo.module-link"))
214 cgit_repo->module_link= xstrdup(value);
215 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
216 if (*value == '/')
217 cgit_repo->readme = xstrdup(value);
218 else
219 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
220 } else if (!strcmp(name, "include"))
221 cgit_read_config(value, cgit_global_config_cb);
222}
223
224void cgit_querystring_cb(const char *name, const char *value)
225{
226 if (!strcmp(name,"r")) {
227 ctx.qry.repo = xstrdup(value);
228 cgit_repo = cgit_get_repoinfo(value);
229 } else if (!strcmp(name, "p")) {
230 ctx.qry.page = xstrdup(value);
231 cgit_cmd = cgit_get_cmd_index(value);
232 } else if (!strcmp(name, "url")) {
233 cgit_parse_url(value);
234 } else if (!strcmp(name, "qt")) {
235 ctx.qry.grep = xstrdup(value);
236 } else if (!strcmp(name, "q")) {
237 ctx.qry.search = xstrdup(value);
238 } else if (!strcmp(name, "h")) {
239 ctx.qry.head = xstrdup(value);
240 ctx.qry.has_symref = 1;
241 } else if (!strcmp(name, "id")) {
242 ctx.qry.sha1 = xstrdup(value);
243 ctx.qry.has_sha1 = 1;
244 } else if (!strcmp(name, "id2")) {
245 ctx.qry.sha2 = xstrdup(value);
246 ctx.qry.has_sha1 = 1;
247 } else if (!strcmp(name, "ofs")) {
248 ctx.qry.ofs = atoi(value);
249 } else if (!strcmp(name, "path")) {
250 ctx.qry.path = trim_end(value, '/');
251 } else if (!strcmp(name, "name")) {
252 ctx.qry.name = xstrdup(value);
253 }
254}
255
256void *cgit_free_commitinfo(struct commitinfo *info)
257{
258 free(info->author);
259 free(info->author_email);
260 free(info->committer);
261 free(info->committer_email);
262 free(info->subject);
263 free(info->msg);
264 free(info->msg_encoding);
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
303char *strlpart(char *txt, int maxlen)
304{
305 char *result;
306
307 if (!txt)
308 return txt;
309
310 if (strlen(txt) <= maxlen)
311 return txt;
312 result = xmalloc(maxlen + 1);
313 memcpy(result, txt, maxlen - 3);
314 result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
315 result[maxlen] = '\0';
316 return result;
317}
318
319char *strrpart(char *txt, int maxlen)
320{
321 char *result;
322
323 if (!txt)
324 return txt;
325
326 if (strlen(txt) <= maxlen)
327 return txt;
328 result = xmalloc(maxlen + 1);
329 memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
330 result[0] = result[1] = result[2] = '.';
331 return result;
332}
333
334void cgit_add_ref(struct reflist *list, struct refinfo *ref)
335{
336 size_t size;
337
338 if (list->count >= list->alloc) {
339 list->alloc += (list->alloc ? list->alloc : 4);
340 size = list->alloc * sizeof(struct refinfo *);
341 list->refs = xrealloc(list->refs, size);
342 }
343 list->refs[list->count++] = ref;
344}
345
346struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
347{
348 struct refinfo *ref;
349
350 ref = xmalloc(sizeof (struct refinfo));
351 ref->refname = xstrdup(refname);
352 ref->object = parse_object(sha1);
353 switch (ref->object->type) {
354 case OBJ_TAG:
355 ref->tag = cgit_parse_tag((struct tag *)ref->object);
356 break;
357 case OBJ_COMMIT:
358 ref->commit = cgit_parse_commit((struct commit *)ref->object);
359 break;
360 }
361 return ref;
362}
363
364int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
365 void *cb_data)
366{
367 struct reflist *list = (struct reflist *)cb_data;
368 struct refinfo *info = cgit_mk_refinfo(refname, sha1);
369
370 if (info)
371 cgit_add_ref(list, info);
372 return 0;
373}
374
375void cgit_diff_tree_cb(struct diff_queue_struct *q,
376 struct diff_options *options, void *data)
377{
378 int i;
379
380 for (i = 0; i < q->nr; i++) {
381 if (q->queue[i]->status == 'U')
382 continue;
383 ((filepair_fn)data)(q->queue[i]);
384 }
385}
386
387static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
388{
389 enum object_type type;
390
391 if (is_null_sha1(sha1)) {
392 file->ptr = (char *)"";
393 file->size = 0;
394 } else {
395 file->ptr = read_sha1_file(sha1, &type,
396 (unsigned long *)&file->size);
397 }
398 return 1;
399}
400
401/*
402 * Receive diff-buffers from xdiff and concatenate them as
403 * needed across multiple callbacks.
404 *
405 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
406 * ripped from git and modified to use globals instead of
407 * a special callback-struct.
408 */
409char *diffbuf = NULL;
410int buflen = 0;
411
412int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
413{
414 int i;
415
416 for (i = 0; i < nbuf; i++) {
417 if (mb[i].ptr[mb[i].size-1] != '\n') {
418 /* Incomplete line */
419 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
420 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
421 buflen += mb[i].size;
422 continue;
423 }
424
425 /* we have a complete line */
426 if (!diffbuf) {
427 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
428 continue;
429 }
430 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
431 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
432 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
433 free(diffbuf);
434 diffbuf = NULL;
435 buflen = 0;
436 }
437 if (diffbuf) {
438 ((linediff_fn)priv)(diffbuf, buflen);
439 free(diffbuf);
440 diffbuf = NULL;
441 buflen = 0;
442 }
443 return 0;
444}
445
446int cgit_diff_files(const unsigned char *old_sha1,
447 const unsigned char *new_sha1,
448 linediff_fn fn)
449{
450 mmfile_t file1, file2;
451 xpparam_t diff_params;
452 xdemitconf_t emit_params;
453 xdemitcb_t emit_cb;
454
455 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
456 return 1;
457
458 diff_params.flags = XDF_NEED_MINIMAL;
459 emit_params.ctxlen = 3;
460 emit_params.flags = XDL_EMIT_FUNCNAMES;
461 emit_params.find_func = NULL;
462 emit_cb.outf = filediff_cb;
463 emit_cb.priv = fn;
464 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
465 return 0;
466}
467
468void cgit_diff_tree(const unsigned char *old_sha1,
469 const unsigned char *new_sha1,
470 filepair_fn fn, const char *prefix)
471{
472 struct diff_options opt;
473 int ret;
474 int prefixlen;
475
476 diff_setup(&opt);
477 opt.output_format = DIFF_FORMAT_CALLBACK;
478 opt.detect_rename = 1;
479 opt.rename_limit = cgit_renamelimit;
480 DIFF_OPT_SET(&opt, RECURSIVE);
481 opt.format_callback = cgit_diff_tree_cb;
482 opt.format_callback_data = fn;
483 if (prefix) {
484 opt.nr_paths = 1;
485 opt.paths = &prefix;
486 prefixlen = strlen(prefix);
487 opt.pathlens = &prefixlen;
488 }
489 diff_setup_done(&opt);
490
491 if (old_sha1 && !is_null_sha1(old_sha1))
492 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
493 else
494 ret = diff_root_tree_sha1(new_sha1, "", &opt);
495 diffcore_std(&opt);
496 diff_flush(&opt);
497}
498
499void cgit_diff_commit(struct commit *commit, filepair_fn fn)
500{
501 unsigned char *old_sha1 = NULL;
502
503 if (commit->parents)
504 old_sha1 = commit->parents->item->object.sha1;
505 cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
506}