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 cgit_repolist cgit_repolist;
12struct cgit_context ctx;
13int cgit_cmd;
14
15const char *cgit_version = CGIT_VERSION;
16
17void cgit_prepare_context(struct cgit_context *ctx)
18{
19 memset(ctx, 0, sizeof(ctx));
20 ctx->cfg.agefile = "info/web/last-modified";
21 ctx->cfg.cache_dynamic_ttl = 5;
22 ctx->cfg.cache_max_create_time = 5;
23 ctx->cfg.cache_repo_ttl = 5;
24 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
25 ctx->cfg.cache_root_ttl = 5;
26 ctx->cfg.cache_static_ttl = -1;
27 ctx->cfg.css = "/cgit.css";
28 ctx->cfg.logo = "/git-logo.png";
29 ctx->cfg.max_commit_count = 50;
30 ctx->cfg.max_lock_attempts = 5;
31 ctx->cfg.max_msg_len = 60;
32 ctx->cfg.max_repodesc_len = 60;
33 ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
34 ctx->cfg.renamelimit = -1;
35 ctx->cfg.robots = "index, nofollow";
36 ctx->cfg.root_title = "Git repository browser";
37 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
38}
39
40int cgit_get_cmd_index(const char *cmd)
41{
42 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
43 "snapshot", "tag", "refs", "patch", NULL};
44 int i;
45
46 for(i = 0; cmds[i]; i++)
47 if (!strcmp(cmd, cmds[i]))
48 return i + 1;
49 return 0;
50}
51
52int chk_zero(int result, char *msg)
53{
54 if (result != 0)
55 die("%s: %s", msg, strerror(errno));
56 return result;
57}
58
59int chk_positive(int result, char *msg)
60{
61 if (result <= 0)
62 die("%s: %s", msg, strerror(errno));
63 return result;
64}
65
66int chk_non_negative(int result, char *msg)
67{
68 if (result < 0)
69 die("%s: %s",msg, strerror(errno));
70 return result;
71}
72
73struct cgit_repo *add_repo(const char *url)
74{
75 struct cgit_repo *ret;
76
77 if (++cgit_repolist.count > cgit_repolist.length) {
78 if (cgit_repolist.length == 0)
79 cgit_repolist.length = 8;
80 else
81 cgit_repolist.length *= 2;
82 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
83 cgit_repolist.length *
84 sizeof(struct cgit_repo));
85 }
86
87 ret = &cgit_repolist.repos[cgit_repolist.count-1];
88 ret->url = trim_end(url, '/');
89 ret->name = ret->url;
90 ret->path = NULL;
91 ret->desc = "[no description]";
92 ret->owner = NULL;
93 ret->group = ctx.cfg.repo_group;
94 ret->defbranch = "master";
95 ret->snapshots = ctx.cfg.snapshots;
96 ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
97 ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
98 ret->module_link = ctx.cfg.module_link;
99 ret->readme = NULL;
100 return ret;
101}
102
103struct cgit_repo *cgit_get_repoinfo(const char *url)
104{
105 int i;
106 struct cgit_repo *repo;
107
108 for (i=0; i<cgit_repolist.count; i++) {
109 repo = &cgit_repolist.repos[i];
110 if (!strcmp(repo->url, url))
111 return repo;
112 }
113 return NULL;
114}
115
116void cgit_global_config_cb(const char *name, const char *value)
117{
118 if (!strcmp(name, "root-title"))
119 ctx.cfg.root_title = xstrdup(value);
120 else if (!strcmp(name, "css"))
121 ctx.cfg.css = xstrdup(value);
122 else if (!strcmp(name, "logo"))
123 ctx.cfg.logo = xstrdup(value);
124 else if (!strcmp(name, "index-header"))
125 ctx.cfg.index_header = xstrdup(value);
126 else if (!strcmp(name, "index-info"))
127 ctx.cfg.index_info = xstrdup(value);
128 else if (!strcmp(name, "logo-link"))
129 ctx.cfg.logo_link = xstrdup(value);
130 else if (!strcmp(name, "module-link"))
131 ctx.cfg.module_link = xstrdup(value);
132 else if (!strcmp(name, "virtual-root")) {
133 ctx.cfg.virtual_root = trim_end(value, '/');
134 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
135 ctx.cfg.virtual_root = "";
136 } else if (!strcmp(name, "nocache"))
137 ctx.cfg.nocache = atoi(value);
138 else if (!strcmp(name, "snapshots"))
139 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
140 else if (!strcmp(name, "enable-index-links"))
141 ctx.cfg.enable_index_links = atoi(value);
142 else if (!strcmp(name, "enable-log-filecount"))
143 ctx.cfg.enable_log_filecount = atoi(value);
144 else if (!strcmp(name, "enable-log-linecount"))
145 ctx.cfg.enable_log_linecount = atoi(value);
146 else if (!strcmp(name, "cache-root"))
147 ctx.cfg.cache_root = xstrdup(value);
148 else if (!strcmp(name, "cache-root-ttl"))
149 ctx.cfg.cache_root_ttl = atoi(value);
150 else if (!strcmp(name, "cache-repo-ttl"))
151 ctx.cfg.cache_repo_ttl = atoi(value);
152 else if (!strcmp(name, "cache-static-ttl"))
153 ctx.cfg.cache_static_ttl = atoi(value);
154 else if (!strcmp(name, "cache-dynamic-ttl"))
155 ctx.cfg.cache_dynamic_ttl = atoi(value);
156 else if (!strcmp(name, "max-message-length"))
157 ctx.cfg.max_msg_len = atoi(value);
158 else if (!strcmp(name, "max-repodesc-length"))
159 ctx.cfg.max_repodesc_len = atoi(value);
160 else if (!strcmp(name, "max-commit-count"))
161 ctx.cfg.max_commit_count = atoi(value);
162 else if (!strcmp(name, "summary-log"))
163 ctx.cfg.summary_log = atoi(value);
164 else if (!strcmp(name, "summary-branches"))
165 ctx.cfg.summary_branches = atoi(value);
166 else if (!strcmp(name, "summary-tags"))
167 ctx.cfg.summary_tags = atoi(value);
168 else if (!strcmp(name, "agefile"))
169 ctx.cfg.agefile = xstrdup(value);
170 else if (!strcmp(name, "renamelimit"))
171 ctx.cfg.renamelimit = atoi(value);
172 else if (!strcmp(name, "robots"))
173 ctx.cfg.robots = xstrdup(value);
174 else if (!strcmp(name, "clone-prefix"))
175 ctx.cfg.clone_prefix = xstrdup(value);
176 else if (!strcmp(name, "repo.group"))
177 ctx.cfg.repo_group = xstrdup(value);
178 else if (!strcmp(name, "repo.url"))
179 ctx.repo = add_repo(value);
180 else if (!strcmp(name, "repo.name"))
181 ctx.repo->name = xstrdup(value);
182 else if (ctx.repo && !strcmp(name, "repo.path"))
183 ctx.repo->path = trim_end(value, '/');
184 else if (ctx.repo && !strcmp(name, "repo.clone-url"))
185 ctx.repo->clone_url = xstrdup(value);
186 else if (ctx.repo && !strcmp(name, "repo.desc"))
187 ctx.repo->desc = xstrdup(value);
188 else if (ctx.repo && !strcmp(name, "repo.owner"))
189 ctx.repo->owner = xstrdup(value);
190 else if (ctx.repo && !strcmp(name, "repo.defbranch"))
191 ctx.repo->defbranch = xstrdup(value);
192 else if (ctx.repo && !strcmp(name, "repo.snapshots"))
193 ctx.repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
194 else if (ctx.repo && !strcmp(name, "repo.enable-log-filecount"))
195 ctx.repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
196 else if (ctx.repo && !strcmp(name, "repo.enable-log-linecount"))
197 ctx.repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
198 else if (ctx.repo && !strcmp(name, "repo.module-link"))
199 ctx.repo->module_link= xstrdup(value);
200 else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
201 if (*value == '/')
202 ctx.repo->readme = xstrdup(value);
203 else
204 ctx.repo->readme = xstrdup(fmt("%s/%s", ctx.repo->path, value));
205 } else if (!strcmp(name, "include"))
206 cgit_read_config(value, cgit_global_config_cb);
207}
208
209void cgit_querystring_cb(const char *name, const char *value)
210{
211 if (!strcmp(name,"r")) {
212 ctx.qry.repo = xstrdup(value);
213 ctx.repo = cgit_get_repoinfo(value);
214 } else if (!strcmp(name, "p")) {
215 ctx.qry.page = xstrdup(value);
216 cgit_cmd = cgit_get_cmd_index(value);
217 } else if (!strcmp(name, "url")) {
218 cgit_parse_url(value);
219 } else if (!strcmp(name, "qt")) {
220 ctx.qry.grep = xstrdup(value);
221 } else if (!strcmp(name, "q")) {
222 ctx.qry.search = xstrdup(value);
223 } else if (!strcmp(name, "h")) {
224 ctx.qry.head = xstrdup(value);
225 ctx.qry.has_symref = 1;
226 } else if (!strcmp(name, "id")) {
227 ctx.qry.sha1 = xstrdup(value);
228 ctx.qry.has_sha1 = 1;
229 } else if (!strcmp(name, "id2")) {
230 ctx.qry.sha2 = xstrdup(value);
231 ctx.qry.has_sha1 = 1;
232 } else if (!strcmp(name, "ofs")) {
233 ctx.qry.ofs = atoi(value);
234 } else if (!strcmp(name, "path")) {
235 ctx.qry.path = trim_end(value, '/');
236 } else if (!strcmp(name, "name")) {
237 ctx.qry.name = xstrdup(value);
238 }
239}
240
241void *cgit_free_commitinfo(struct commitinfo *info)
242{
243 free(info->author);
244 free(info->author_email);
245 free(info->committer);
246 free(info->committer_email);
247 free(info->subject);
248 free(info->msg);
249 free(info->msg_encoding);
250 free(info);
251 return NULL;
252}
253
254int hextoint(char c)
255{
256 if (c >= 'a' && c <= 'f')
257 return 10 + c - 'a';
258 else if (c >= 'A' && c <= 'F')
259 return 10 + c - 'A';
260 else if (c >= '0' && c <= '9')
261 return c - '0';
262 else
263 return -1;
264}
265
266char *trim_end(const char *str, char c)
267{
268 int len;
269 char *s, *t;
270
271 if (str == NULL)
272 return NULL;
273 t = (char *)str;
274 len = strlen(t);
275 while(len > 0 && t[len - 1] == c)
276 len--;
277
278 if (len == 0)
279 return NULL;
280
281 c = t[len];
282 t[len] = '\0';
283 s = xstrdup(t);
284 t[len] = c;
285 return s;
286}
287
288char *strlpart(char *txt, int maxlen)
289{
290 char *result;
291
292 if (!txt)
293 return txt;
294
295 if (strlen(txt) <= maxlen)
296 return txt;
297 result = xmalloc(maxlen + 1);
298 memcpy(result, txt, maxlen - 3);
299 result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
300 result[maxlen] = '\0';
301 return result;
302}
303
304char *strrpart(char *txt, int maxlen)
305{
306 char *result;
307
308 if (!txt)
309 return txt;
310
311 if (strlen(txt) <= maxlen)
312 return txt;
313 result = xmalloc(maxlen + 1);
314 memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
315 result[0] = result[1] = result[2] = '.';
316 return result;
317}
318
319void cgit_add_ref(struct reflist *list, struct refinfo *ref)
320{
321 size_t size;
322
323 if (list->count >= list->alloc) {
324 list->alloc += (list->alloc ? list->alloc : 4);
325 size = list->alloc * sizeof(struct refinfo *);
326 list->refs = xrealloc(list->refs, size);
327 }
328 list->refs[list->count++] = ref;
329}
330
331struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
332{
333 struct refinfo *ref;
334
335 ref = xmalloc(sizeof (struct refinfo));
336 ref->refname = xstrdup(refname);
337 ref->object = parse_object(sha1);
338 switch (ref->object->type) {
339 case OBJ_TAG:
340 ref->tag = cgit_parse_tag((struct tag *)ref->object);
341 break;
342 case OBJ_COMMIT:
343 ref->commit = cgit_parse_commit((struct commit *)ref->object);
344 break;
345 }
346 return ref;
347}
348
349int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
350 void *cb_data)
351{
352 struct reflist *list = (struct reflist *)cb_data;
353 struct refinfo *info = cgit_mk_refinfo(refname, sha1);
354
355 if (info)
356 cgit_add_ref(list, info);
357 return 0;
358}
359
360void cgit_diff_tree_cb(struct diff_queue_struct *q,
361 struct diff_options *options, void *data)
362{
363 int i;
364
365 for (i = 0; i < q->nr; i++) {
366 if (q->queue[i]->status == 'U')
367 continue;
368 ((filepair_fn)data)(q->queue[i]);
369 }
370}
371
372static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
373{
374 enum object_type type;
375
376 if (is_null_sha1(sha1)) {
377 file->ptr = (char *)"";
378 file->size = 0;
379 } else {
380 file->ptr = read_sha1_file(sha1, &type,
381 (unsigned long *)&file->size);
382 }
383 return 1;
384}
385
386/*
387 * Receive diff-buffers from xdiff and concatenate them as
388 * needed across multiple callbacks.
389 *
390 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
391 * ripped from git and modified to use globals instead of
392 * a special callback-struct.
393 */
394char *diffbuf = NULL;
395int buflen = 0;
396
397int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
398{
399 int i;
400
401 for (i = 0; i < nbuf; i++) {
402 if (mb[i].ptr[mb[i].size-1] != '\n') {
403 /* Incomplete line */
404 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
405 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
406 buflen += mb[i].size;
407 continue;
408 }
409
410 /* we have a complete line */
411 if (!diffbuf) {
412 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
413 continue;
414 }
415 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
416 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
417 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
418 free(diffbuf);
419 diffbuf = NULL;
420 buflen = 0;
421 }
422 if (diffbuf) {
423 ((linediff_fn)priv)(diffbuf, buflen);
424 free(diffbuf);
425 diffbuf = NULL;
426 buflen = 0;
427 }
428 return 0;
429}
430
431int cgit_diff_files(const unsigned char *old_sha1,
432 const unsigned char *new_sha1,
433 linediff_fn fn)
434{
435 mmfile_t file1, file2;
436 xpparam_t diff_params;
437 xdemitconf_t emit_params;
438 xdemitcb_t emit_cb;
439
440 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
441 return 1;
442
443 diff_params.flags = XDF_NEED_MINIMAL;
444 emit_params.ctxlen = 3;
445 emit_params.flags = XDL_EMIT_FUNCNAMES;
446 emit_params.find_func = NULL;
447 emit_cb.outf = filediff_cb;
448 emit_cb.priv = fn;
449 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
450 return 0;
451}
452
453void cgit_diff_tree(const unsigned char *old_sha1,
454 const unsigned char *new_sha1,
455 filepair_fn fn, const char *prefix)
456{
457 struct diff_options opt;
458 int ret;
459 int prefixlen;
460
461 diff_setup(&opt);
462 opt.output_format = DIFF_FORMAT_CALLBACK;
463 opt.detect_rename = 1;
464 opt.rename_limit = ctx.cfg.renamelimit;
465 DIFF_OPT_SET(&opt, RECURSIVE);
466 opt.format_callback = cgit_diff_tree_cb;
467 opt.format_callback_data = fn;
468 if (prefix) {
469 opt.nr_paths = 1;
470 opt.paths = &prefix;
471 prefixlen = strlen(prefix);
472 opt.pathlens = &prefixlen;
473 }
474 diff_setup_done(&opt);
475
476 if (old_sha1 && !is_null_sha1(old_sha1))
477 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
478 else
479 ret = diff_root_tree_sha1(new_sha1, "", &opt);
480 diffcore_std(&opt);
481 diff_flush(&opt);
482}
483
484void cgit_diff_commit(struct commit *commit, filepair_fn fn)
485{
486 unsigned char *old_sha1 = NULL;
487
488 if (commit->parents)
489 old_sha1 = commit->parents->item->object.sha1;
490 cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
491}