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