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
17int htmlfd = 0;
18
19void cgit_prepare_context(struct cgit_context *ctx)
20{
21 memset(ctx, 0, sizeof(ctx));
22 ctx->cfg.agefile = "info/web/last-modified";
23 ctx->cfg.cache_dynamic_ttl = 5;
24 ctx->cfg.cache_max_create_time = 5;
25 ctx->cfg.cache_repo_ttl = 5;
26 ctx->cfg.cache_root = CGIT_CACHE_ROOT;
27 ctx->cfg.cache_root_ttl = 5;
28 ctx->cfg.cache_static_ttl = -1;
29 ctx->cfg.css = "/cgit.css";
30 ctx->cfg.logo = "/git-logo.png";
31 ctx->cfg.max_commit_count = 50;
32 ctx->cfg.max_lock_attempts = 5;
33 ctx->cfg.max_msg_len = 60;
34 ctx->cfg.max_repodesc_len = 60;
35 ctx->cfg.module_link = "./?repo=%s&page=commit&id=%s";
36 ctx->cfg.renamelimit = -1;
37 ctx->cfg.robots = "index, nofollow";
38 ctx->cfg.root_title = "Git repository browser";
39 ctx->cfg.script_name = CGIT_SCRIPT_NAME;
40}
41
42int cgit_get_cmd_index(const char *cmd)
43{
44 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
45 "snapshot", "tag", "refs", "patch", NULL};
46 int i;
47
48 for(i = 0; cmds[i]; i++)
49 if (!strcmp(cmd, cmds[i]))
50 return i + 1;
51 return 0;
52}
53
54int chk_zero(int result, char *msg)
55{
56 if (result != 0)
57 die("%s: %s", msg, strerror(errno));
58 return result;
59}
60
61int chk_positive(int result, char *msg)
62{
63 if (result <= 0)
64 die("%s: %s", msg, strerror(errno));
65 return result;
66}
67
68int chk_non_negative(int result, char *msg)
69{
70 if (result < 0)
71 die("%s: %s",msg, strerror(errno));
72 return result;
73}
74
75struct cgit_repo *add_repo(const char *url)
76{
77 struct cgit_repo *ret;
78
79 if (++cgit_repolist.count > cgit_repolist.length) {
80 if (cgit_repolist.length == 0)
81 cgit_repolist.length = 8;
82 else
83 cgit_repolist.length *= 2;
84 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
85 cgit_repolist.length *
86 sizeof(struct cgit_repo));
87 }
88
89 ret = &cgit_repolist.repos[cgit_repolist.count-1];
90 ret->url = trim_end(url, '/');
91 ret->name = ret->url;
92 ret->path = NULL;
93 ret->desc = "[no description]";
94 ret->owner = NULL;
95 ret->group = ctx.cfg.repo_group;
96 ret->defbranch = "master";
97 ret->snapshots = ctx.cfg.snapshots;
98 ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
99 ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
100 ret->module_link = ctx.cfg.module_link;
101 ret->readme = NULL;
102 return ret;
103}
104
105struct cgit_repo *cgit_get_repoinfo(const char *url)
106{
107 int i;
108 struct cgit_repo *repo;
109
110 for (i=0; i<cgit_repolist.count; i++) {
111 repo = &cgit_repolist.repos[i];
112 if (!strcmp(repo->url, url))
113 return repo;
114 }
115 return NULL;
116}
117
118void cgit_global_config_cb(const char *name, const char *value)
119{
120 if (!strcmp(name, "root-title"))
121 ctx.cfg.root_title = xstrdup(value);
122 else if (!strcmp(name, "css"))
123 ctx.cfg.css = xstrdup(value);
124 else if (!strcmp(name, "logo"))
125 ctx.cfg.logo = xstrdup(value);
126 else if (!strcmp(name, "index-header"))
127 ctx.cfg.index_header = xstrdup(value);
128 else if (!strcmp(name, "index-info"))
129 ctx.cfg.index_info = xstrdup(value);
130 else if (!strcmp(name, "logo-link"))
131 ctx.cfg.logo_link = xstrdup(value);
132 else if (!strcmp(name, "module-link"))
133 ctx.cfg.module_link = xstrdup(value);
134 else if (!strcmp(name, "virtual-root")) {
135 ctx.cfg.virtual_root = trim_end(value, '/');
136 if (!ctx.cfg.virtual_root && (!strcmp(value, "/")))
137 ctx.cfg.virtual_root = "";
138 } else if (!strcmp(name, "nocache"))
139 ctx.cfg.nocache = atoi(value);
140 else if (!strcmp(name, "snapshots"))
141 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
142 else if (!strcmp(name, "enable-index-links"))
143 ctx.cfg.enable_index_links = atoi(value);
144 else if (!strcmp(name, "enable-log-filecount"))
145 ctx.cfg.enable_log_filecount = atoi(value);
146 else if (!strcmp(name, "enable-log-linecount"))
147 ctx.cfg.enable_log_linecount = atoi(value);
148 else if (!strcmp(name, "cache-root"))
149 ctx.cfg.cache_root = xstrdup(value);
150 else if (!strcmp(name, "cache-root-ttl"))
151 ctx.cfg.cache_root_ttl = atoi(value);
152 else if (!strcmp(name, "cache-repo-ttl"))
153 ctx.cfg.cache_repo_ttl = atoi(value);
154 else if (!strcmp(name, "cache-static-ttl"))
155 ctx.cfg.cache_static_ttl = atoi(value);
156 else if (!strcmp(name, "cache-dynamic-ttl"))
157 ctx.cfg.cache_dynamic_ttl = atoi(value);
158 else if (!strcmp(name, "max-message-length"))
159 ctx.cfg.max_msg_len = atoi(value);
160 else if (!strcmp(name, "max-repodesc-length"))
161 ctx.cfg.max_repodesc_len = atoi(value);
162 else if (!strcmp(name, "max-commit-count"))
163 ctx.cfg.max_commit_count = atoi(value);
164 else if (!strcmp(name, "summary-log"))
165 ctx.cfg.summary_log = atoi(value);
166 else if (!strcmp(name, "summary-branches"))
167 ctx.cfg.summary_branches = atoi(value);
168 else if (!strcmp(name, "summary-tags"))
169 ctx.cfg.summary_tags = atoi(value);
170 else if (!strcmp(name, "agefile"))
171 ctx.cfg.agefile = xstrdup(value);
172 else if (!strcmp(name, "renamelimit"))
173 ctx.cfg.renamelimit = atoi(value);
174 else if (!strcmp(name, "robots"))
175 ctx.cfg.robots = xstrdup(value);
176 else if (!strcmp(name, "clone-prefix"))
177 ctx.cfg.clone_prefix = xstrdup(value);
178 else if (!strcmp(name, "repo.group"))
179 ctx.cfg.repo_group = xstrdup(value);
180 else if (!strcmp(name, "repo.url"))
181 ctx.repo = add_repo(value);
182 else if (!strcmp(name, "repo.name"))
183 ctx.repo->name = xstrdup(value);
184 else if (ctx.repo && !strcmp(name, "repo.path"))
185 ctx.repo->path = trim_end(value, '/');
186 else if (ctx.repo && !strcmp(name, "repo.clone-url"))
187 ctx.repo->clone_url = xstrdup(value);
188 else if (ctx.repo && !strcmp(name, "repo.desc"))
189 ctx.repo->desc = xstrdup(value);
190 else if (ctx.repo && !strcmp(name, "repo.owner"))
191 ctx.repo->owner = xstrdup(value);
192 else if (ctx.repo && !strcmp(name, "repo.defbranch"))
193 ctx.repo->defbranch = xstrdup(value);
194 else if (ctx.repo && !strcmp(name, "repo.snapshots"))
195 ctx.repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
196 else if (ctx.repo && !strcmp(name, "repo.enable-log-filecount"))
197 ctx.repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
198 else if (ctx.repo && !strcmp(name, "repo.enable-log-linecount"))
199 ctx.repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
200 else if (ctx.repo && !strcmp(name, "repo.module-link"))
201 ctx.repo->module_link= xstrdup(value);
202 else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
203 if (*value == '/')
204 ctx.repo->readme = xstrdup(value);
205 else
206 ctx.repo->readme = xstrdup(fmt("%s/%s", ctx.repo->path, value));
207 } else if (!strcmp(name, "include"))
208 cgit_read_config(value, cgit_global_config_cb);
209}
210
211void cgit_querystring_cb(const char *name, const char *value)
212{
213 if (!strcmp(name,"r")) {
214 ctx.qry.repo = xstrdup(value);
215 ctx.repo = cgit_get_repoinfo(value);
216 } else if (!strcmp(name, "p")) {
217 ctx.qry.page = xstrdup(value);
218 cgit_cmd = cgit_get_cmd_index(value);
219 } else if (!strcmp(name, "url")) {
220 cgit_parse_url(value);
221 } else if (!strcmp(name, "qt")) {
222 ctx.qry.grep = xstrdup(value);
223 } else if (!strcmp(name, "q")) {
224 ctx.qry.search = xstrdup(value);
225 } else if (!strcmp(name, "h")) {
226 ctx.qry.head = xstrdup(value);
227 ctx.qry.has_symref = 1;
228 } else if (!strcmp(name, "id")) {
229 ctx.qry.sha1 = xstrdup(value);
230 ctx.qry.has_sha1 = 1;
231 } else if (!strcmp(name, "id2")) {
232 ctx.qry.sha2 = xstrdup(value);
233 ctx.qry.has_sha1 = 1;
234 } else if (!strcmp(name, "ofs")) {
235 ctx.qry.ofs = atoi(value);
236 } else if (!strcmp(name, "path")) {
237 ctx.qry.path = trim_end(value, '/');
238 } else if (!strcmp(name, "name")) {
239 ctx.qry.name = xstrdup(value);
240 }
241}
242
243void *cgit_free_commitinfo(struct commitinfo *info)
244{
245 free(info->author);
246 free(info->author_email);
247 free(info->committer);
248 free(info->committer_email);
249 free(info->subject);
250 free(info->msg);
251 free(info->msg_encoding);
252 free(info);
253 return NULL;
254}
255
256int hextoint(char c)
257{
258 if (c >= 'a' && c <= 'f')
259 return 10 + c - 'a';
260 else if (c >= 'A' && c <= 'F')
261 return 10 + c - 'A';
262 else if (c >= '0' && c <= '9')
263 return c - '0';
264 else
265 return -1;
266}
267
268char *trim_end(const char *str, char c)
269{
270 int len;
271 char *s, *t;
272
273 if (str == NULL)
274 return NULL;
275 t = (char *)str;
276 len = strlen(t);
277 while(len > 0 && t[len - 1] == c)
278 len--;
279
280 if (len == 0)
281 return NULL;
282
283 c = t[len];
284 t[len] = '\0';
285 s = xstrdup(t);
286 t[len] = c;
287 return s;
288}
289
290char *strlpart(char *txt, int maxlen)
291{
292 char *result;
293
294 if (!txt)
295 return txt;
296
297 if (strlen(txt) <= maxlen)
298 return txt;
299 result = xmalloc(maxlen + 1);
300 memcpy(result, txt, maxlen - 3);
301 result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
302 result[maxlen] = '\0';
303 return result;
304}
305
306char *strrpart(char *txt, int maxlen)
307{
308 char *result;
309
310 if (!txt)
311 return txt;
312
313 if (strlen(txt) <= maxlen)
314 return txt;
315 result = xmalloc(maxlen + 1);
316 memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
317 result[0] = result[1] = result[2] = '.';
318 return result;
319}
320
321void cgit_add_ref(struct reflist *list, struct refinfo *ref)
322{
323 size_t size;
324
325 if (list->count >= list->alloc) {
326 list->alloc += (list->alloc ? list->alloc : 4);
327 size = list->alloc * sizeof(struct refinfo *);
328 list->refs = xrealloc(list->refs, size);
329 }
330 list->refs[list->count++] = ref;
331}
332
333struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
334{
335 struct refinfo *ref;
336
337 ref = xmalloc(sizeof (struct refinfo));
338 ref->refname = xstrdup(refname);
339 ref->object = parse_object(sha1);
340 switch (ref->object->type) {
341 case OBJ_TAG:
342 ref->tag = cgit_parse_tag((struct tag *)ref->object);
343 break;
344 case OBJ_COMMIT:
345 ref->commit = cgit_parse_commit((struct commit *)ref->object);
346 break;
347 }
348 return ref;
349}
350
351int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
352 void *cb_data)
353{
354 struct reflist *list = (struct reflist *)cb_data;
355 struct refinfo *info = cgit_mk_refinfo(refname, sha1);
356
357 if (info)
358 cgit_add_ref(list, info);
359 return 0;
360}
361
362void cgit_diff_tree_cb(struct diff_queue_struct *q,
363 struct diff_options *options, void *data)
364{
365 int i;
366
367 for (i = 0; i < q->nr; i++) {
368 if (q->queue[i]->status == 'U')
369 continue;
370 ((filepair_fn)data)(q->queue[i]);
371 }
372}
373
374static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
375{
376 enum object_type type;
377
378 if (is_null_sha1(sha1)) {
379 file->ptr = (char *)"";
380 file->size = 0;
381 } else {
382 file->ptr = read_sha1_file(sha1, &type,
383 (unsigned long *)&file->size);
384 }
385 return 1;
386}
387
388/*
389 * Receive diff-buffers from xdiff and concatenate them as
390 * needed across multiple callbacks.
391 *
392 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
393 * ripped from git and modified to use globals instead of
394 * a special callback-struct.
395 */
396char *diffbuf = NULL;
397int buflen = 0;
398
399int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
400{
401 int i;
402
403 for (i = 0; i < nbuf; i++) {
404 if (mb[i].ptr[mb[i].size-1] != '\n') {
405 /* Incomplete line */
406 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
407 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
408 buflen += mb[i].size;
409 continue;
410 }
411
412 /* we have a complete line */
413 if (!diffbuf) {
414 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
415 continue;
416 }
417 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
418 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
419 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
420 free(diffbuf);
421 diffbuf = NULL;
422 buflen = 0;
423 }
424 if (diffbuf) {
425 ((linediff_fn)priv)(diffbuf, buflen);
426 free(diffbuf);
427 diffbuf = NULL;
428 buflen = 0;
429 }
430 return 0;
431}
432
433int cgit_diff_files(const unsigned char *old_sha1,
434 const unsigned char *new_sha1,
435 linediff_fn fn)
436{
437 mmfile_t file1, file2;
438 xpparam_t diff_params;
439 xdemitconf_t emit_params;
440 xdemitcb_t emit_cb;
441
442 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
443 return 1;
444
445 diff_params.flags = XDF_NEED_MINIMAL;
446 emit_params.ctxlen = 3;
447 emit_params.flags = XDL_EMIT_FUNCNAMES;
448 emit_params.find_func = NULL;
449 emit_cb.outf = filediff_cb;
450 emit_cb.priv = fn;
451 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
452 return 0;
453}
454
455void cgit_diff_tree(const unsigned char *old_sha1,
456 const unsigned char *new_sha1,
457 filepair_fn fn, const char *prefix)
458{
459 struct diff_options opt;
460 int ret;
461 int prefixlen;
462
463 diff_setup(&opt);
464 opt.output_format = DIFF_FORMAT_CALLBACK;
465 opt.detect_rename = 1;
466 opt.rename_limit = ctx.cfg.renamelimit;
467 DIFF_OPT_SET(&opt, RECURSIVE);
468 opt.format_callback = cgit_diff_tree_cb;
469 opt.format_callback_data = fn;
470 if (prefix) {
471 opt.nr_paths = 1;
472 opt.paths = &prefix;
473 prefixlen = strlen(prefix);
474 opt.pathlens = &prefixlen;
475 }
476 diff_setup_done(&opt);
477
478 if (old_sha1 && !is_null_sha1(old_sha1))
479 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
480 else
481 ret = diff_root_tree_sha1(new_sha1, "", &opt);
482 diffcore_std(&opt);
483 diff_flush(&opt);
484}
485
486void cgit_diff_commit(struct commit *commit, filepair_fn fn)
487{
488 unsigned char *old_sha1 = NULL;
489
490 if (commit->parents)
491 old_sha1 = commit->parents->item->object.sha1;
492 cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
493}