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_sha1 = NULL;
58char *cgit_query_sha2 = NULL;
59char *cgit_query_path = NULL;
60char *cgit_query_name = NULL;
61int cgit_query_ofs = 0;
62
63int htmlfd = 0;
64
65
66int cgit_get_cmd_index(const char *cmd)
67{
68 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
69 "snapshot", "tag", "refs", NULL};
70 int i;
71
72 for(i = 0; cmds[i]; i++)
73 if (!strcmp(cmd, cmds[i]))
74 return i + 1;
75 return 0;
76}
77
78int chk_zero(int result, char *msg)
79{
80 if (result != 0)
81 die("%s: %s", msg, strerror(errno));
82 return result;
83}
84
85int chk_positive(int result, char *msg)
86{
87 if (result <= 0)
88 die("%s: %s", msg, strerror(errno));
89 return result;
90}
91
92int chk_non_negative(int result, char *msg)
93{
94 if (result < 0)
95 die("%s: %s",msg, strerror(errno));
96 return result;
97}
98
99struct repoinfo *add_repo(const char *url)
100{
101 struct repoinfo *ret;
102
103 if (++cgit_repolist.count > cgit_repolist.length) {
104 if (cgit_repolist.length == 0)
105 cgit_repolist.length = 8;
106 else
107 cgit_repolist.length *= 2;
108 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
109 cgit_repolist.length *
110 sizeof(struct repoinfo));
111 }
112
113 ret = &cgit_repolist.repos[cgit_repolist.count-1];
114 ret->url = trim_end(url, '/');
115 ret->name = ret->url;
116 ret->path = NULL;
117 ret->desc = NULL;
118 ret->owner = NULL;
119 ret->group = cgit_repo_group;
120 ret->defbranch = "master";
121 ret->snapshots = cgit_snapshots;
122 ret->enable_log_filecount = cgit_enable_log_filecount;
123 ret->enable_log_linecount = cgit_enable_log_linecount;
124 ret->module_link = cgit_module_link;
125 ret->readme = NULL;
126 return ret;
127}
128
129struct repoinfo *cgit_get_repoinfo(const char *url)
130{
131 int i;
132 struct repoinfo *repo;
133
134 for (i=0; i<cgit_repolist.count; i++) {
135 repo = &cgit_repolist.repos[i];
136 if (!strcmp(repo->url, url))
137 return repo;
138 }
139 return NULL;
140}
141
142void cgit_global_config_cb(const char *name, const char *value)
143{
144 if (!strcmp(name, "root-title"))
145 cgit_root_title = xstrdup(value);
146 else if (!strcmp(name, "css"))
147 cgit_css = xstrdup(value);
148 else if (!strcmp(name, "logo"))
149 cgit_logo = xstrdup(value);
150 else if (!strcmp(name, "index-header"))
151 cgit_index_header = xstrdup(value);
152 else if (!strcmp(name, "logo-link"))
153 cgit_logo_link = xstrdup(value);
154 else if (!strcmp(name, "module-link"))
155 cgit_module_link = xstrdup(value);
156 else if (!strcmp(name, "virtual-root"))
157 cgit_virtual_root = trim_end(value, '/');
158 else if (!strcmp(name, "nocache"))
159 cgit_nocache = atoi(value);
160 else if (!strcmp(name, "snapshots"))
161 cgit_snapshots = cgit_parse_snapshots_mask(value);
162 else if (!strcmp(name, "enable-index-links"))
163 cgit_enable_index_links = atoi(value);
164 else if (!strcmp(name, "enable-log-filecount"))
165 cgit_enable_log_filecount = atoi(value);
166 else if (!strcmp(name, "enable-log-linecount"))
167 cgit_enable_log_linecount = atoi(value);
168 else if (!strcmp(name, "cache-root"))
169 cgit_cache_root = xstrdup(value);
170 else if (!strcmp(name, "cache-root-ttl"))
171 cgit_cache_root_ttl = atoi(value);
172 else if (!strcmp(name, "cache-repo-ttl"))
173 cgit_cache_repo_ttl = atoi(value);
174 else if (!strcmp(name, "cache-static-ttl"))
175 cgit_cache_static_ttl = atoi(value);
176 else if (!strcmp(name, "cache-dynamic-ttl"))
177 cgit_cache_dynamic_ttl = atoi(value);
178 else if (!strcmp(name, "max-message-length"))
179 cgit_max_msg_len = atoi(value);
180 else if (!strcmp(name, "max-repodesc-length"))
181 cgit_max_repodesc_len = atoi(value);
182 else if (!strcmp(name, "max-commit-count"))
183 cgit_max_commit_count = atoi(value);
184 else if (!strcmp(name, "summary-log"))
185 cgit_summary_log = atoi(value);
186 else if (!strcmp(name, "summary-branches"))
187 cgit_summary_branches = atoi(value);
188 else if (!strcmp(name, "summary-tags"))
189 cgit_summary_tags = atoi(value);
190 else if (!strcmp(name, "agefile"))
191 cgit_agefile = xstrdup(value);
192 else if (!strcmp(name, "renamelimit"))
193 cgit_renamelimit = atoi(value);
194 else if (!strcmp(name, "repo.group"))
195 cgit_repo_group = xstrdup(value);
196 else if (!strcmp(name, "repo.url"))
197 cgit_repo = add_repo(value);
198 else if (!strcmp(name, "repo.name"))
199 cgit_repo->name = xstrdup(value);
200 else if (cgit_repo && !strcmp(name, "repo.path"))
201 cgit_repo->path = trim_end(value, '/');
202 else if (cgit_repo && !strcmp(name, "repo.desc"))
203 cgit_repo->desc = xstrdup(value);
204 else if (cgit_repo && !strcmp(name, "repo.owner"))
205 cgit_repo->owner = xstrdup(value);
206 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
207 cgit_repo->defbranch = xstrdup(value);
208 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
209 cgit_repo->snapshots = cgit_snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
210 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
211 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
212 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
213 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
214 else if (cgit_repo && !strcmp(name, "repo.module-link"))
215 cgit_repo->module_link= xstrdup(value);
216 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
217 if (*value == '/')
218 cgit_repo->readme = xstrdup(value);
219 else
220 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
221 } else if (!strcmp(name, "include"))
222 cgit_read_config(value, cgit_global_config_cb);
223}
224
225void cgit_querystring_cb(const char *name, const char *value)
226{
227 if (!strcmp(name,"r")) {
228 cgit_query_repo = xstrdup(value);
229 cgit_repo = cgit_get_repoinfo(value);
230 } else if (!strcmp(name, "p")) {
231 cgit_query_page = xstrdup(value);
232 cgit_cmd = cgit_get_cmd_index(value);
233 } else if (!strcmp(name, "url")) {
234 cgit_parse_url(value);
235 } else if (!strcmp(name, "q")) {
236 cgit_query_search = xstrdup(value);
237 } else if (!strcmp(name, "h")) {
238 cgit_query_head = xstrdup(value);
239 cgit_query_has_symref = 1;
240 } else if (!strcmp(name, "id")) {
241 cgit_query_sha1 = xstrdup(value);
242 cgit_query_has_sha1 = 1;
243 } else if (!strcmp(name, "id2")) {
244 cgit_query_sha2 = xstrdup(value);
245 cgit_query_has_sha1 = 1;
246 } else if (!strcmp(name, "ofs")) {
247 cgit_query_ofs = atoi(value);
248 } else if (!strcmp(name, "path")) {
249 cgit_query_path = trim_end(value, '/');
250 } else if (!strcmp(name, "name")) {
251 cgit_query_name = xstrdup(value);
252 }
253}
254
255void *cgit_free_commitinfo(struct commitinfo *info)
256{
257 free(info->author);
258 free(info->author_email);
259 free(info->committer);
260 free(info->committer_email);
261 free(info->subject);
262 free(info);
263 return NULL;
264}
265
266int hextoint(char c)
267{
268 if (c >= 'a' && c <= 'f')
269 return 10 + c - 'a';
270 else if (c >= 'A' && c <= 'F')
271 return 10 + c - 'A';
272 else if (c >= '0' && c <= '9')
273 return c - '0';
274 else
275 return -1;
276}
277
278char *trim_end(const char *str, char c)
279{
280 int len;
281 char *s, *t;
282
283 if (str == NULL)
284 return NULL;
285 t = (char *)str;
286 len = strlen(t);
287 while(len > 0 && t[len - 1] == c)
288 len--;
289
290 if (len == 0)
291 return NULL;
292
293 c = t[len];
294 t[len] = '\0';
295 s = xstrdup(t);
296 t[len] = c;
297 return s;
298}
299
300void cgit_add_ref(struct reflist *list, struct refinfo *ref)
301{
302 size_t size;
303
304 if (list->count >= list->alloc) {
305 list->alloc += (list->alloc ? list->alloc : 4);
306 size = list->alloc * sizeof(struct refinfo *);
307 list->refs = xrealloc(list->refs, size);
308 }
309 list->refs[list->count++] = ref;
310}
311
312struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
313{
314 struct refinfo *ref;
315
316 ref = xmalloc(sizeof (struct refinfo));
317 ref->refname = xstrdup(refname);
318 ref->object = parse_object(sha1);
319 switch (ref->object->type) {
320 case OBJ_TAG:
321 ref->tag = cgit_parse_tag((struct tag *)ref->object);
322 break;
323 case OBJ_COMMIT:
324 ref->commit = cgit_parse_commit((struct commit *)ref->object);
325 break;
326 }
327 return ref;
328}
329
330int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
331 void *cb_data)
332{
333 struct reflist *list = (struct reflist *)cb_data;
334 struct refinfo *info = cgit_mk_refinfo(refname, sha1);
335
336 if (info)
337 cgit_add_ref(list, info);
338 return 0;
339}
340
341void cgit_diff_tree_cb(struct diff_queue_struct *q,
342 struct diff_options *options, void *data)
343{
344 int i;
345
346 for (i = 0; i < q->nr; i++) {
347 if (q->queue[i]->status == 'U')
348 continue;
349 ((filepair_fn)data)(q->queue[i]);
350 }
351}
352
353static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
354{
355 enum object_type type;
356
357 if (is_null_sha1(sha1)) {
358 file->ptr = (char *)"";
359 file->size = 0;
360 } else {
361 file->ptr = read_sha1_file(sha1, &type,
362 (unsigned long *)&file->size);
363 }
364 return 1;
365}
366
367/*
368 * Receive diff-buffers from xdiff and concatenate them as
369 * needed across multiple callbacks.
370 *
371 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
372 * ripped from git and modified to use globals instead of
373 * a special callback-struct.
374 */
375char *diffbuf = NULL;
376int buflen = 0;
377
378int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
379{
380 int i;
381
382 for (i = 0; i < nbuf; i++) {
383 if (mb[i].ptr[mb[i].size-1] != '\n') {
384 /* Incomplete line */
385 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
386 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
387 buflen += mb[i].size;
388 continue;
389 }
390
391 /* we have a complete line */
392 if (!diffbuf) {
393 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
394 continue;
395 }
396 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
397 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
398 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
399 free(diffbuf);
400 diffbuf = NULL;
401 buflen = 0;
402 }
403 if (diffbuf) {
404 ((linediff_fn)priv)(diffbuf, buflen);
405 free(diffbuf);
406 diffbuf = NULL;
407 buflen = 0;
408 }
409 return 0;
410}
411
412int cgit_diff_files(const unsigned char *old_sha1,
413 const unsigned char *new_sha1,
414 linediff_fn fn)
415{
416 mmfile_t file1, file2;
417 xpparam_t diff_params;
418 xdemitconf_t emit_params;
419 xdemitcb_t emit_cb;
420
421 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
422 return 1;
423
424 diff_params.flags = XDF_NEED_MINIMAL;
425 emit_params.ctxlen = 3;
426 emit_params.flags = XDL_EMIT_FUNCNAMES;
427 emit_params.find_func = NULL;
428 emit_cb.outf = filediff_cb;
429 emit_cb.priv = fn;
430 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
431 return 0;
432}
433
434void cgit_diff_tree(const unsigned char *old_sha1,
435 const unsigned char *new_sha1,
436 filepair_fn fn, const char *prefix)
437{
438 struct diff_options opt;
439 int ret;
440 int prefixlen;
441
442 diff_setup(&opt);
443 opt.output_format = DIFF_FORMAT_CALLBACK;
444 opt.detect_rename = 1;
445 opt.rename_limit = cgit_renamelimit;
446 opt.recursive = 1;
447 opt.format_callback = cgit_diff_tree_cb;
448 opt.format_callback_data = fn;
449 if (prefix) {
450 opt.nr_paths = 1;
451 opt.paths = &prefix;
452 prefixlen = strlen(prefix);
453 opt.pathlens = &prefixlen;
454 }
455 diff_setup_done(&opt);
456
457 if (old_sha1 && !is_null_sha1(old_sha1))
458 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
459 else
460 ret = diff_root_tree_sha1(new_sha1, "", &opt);
461 diffcore_std(&opt);
462 diff_flush(&opt);
463}
464
465void cgit_diff_commit(struct commit *commit, filepair_fn fn)
466{
467 unsigned char *old_sha1 = NULL;
468
469 if (commit->parents)
470 old_sha1 = commit->parents->item->object.sha1;
471 cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
472}