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