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 = "/var/cache/cgit";
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;
41
42int cgit_max_msg_len = 60;
43int cgit_max_repodesc_len = 60;
44int cgit_max_commit_count = 50;
45
46int cgit_query_has_symref = 0;
47int cgit_query_has_sha1 = 0;
48
49char *cgit_querystring = NULL;
50char *cgit_query_repo = NULL;
51char *cgit_query_page = NULL;
52char *cgit_query_head = NULL;
53char *cgit_query_search = NULL;
54char *cgit_query_sha1 = NULL;
55char *cgit_query_sha2 = NULL;
56char *cgit_query_path = NULL;
57char *cgit_query_name = NULL;
58int cgit_query_ofs = 0;
59
60int htmlfd = 0;
61
62
63int cgit_get_cmd_index(const char *cmd)
64{
65 static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
66 "snapshot", "tag", NULL};
67 int i;
68
69 for(i = 0; cmds[i]; i++)
70 if (!strcmp(cmd, cmds[i]))
71 return i + 1;
72 return 0;
73}
74
75int chk_zero(int result, char *msg)
76{
77 if (result != 0)
78 die("%s: %s", msg, strerror(errno));
79 return result;
80}
81
82int chk_positive(int result, char *msg)
83{
84 if (result <= 0)
85 die("%s: %s", msg, strerror(errno));
86 return result;
87}
88
89int chk_non_negative(int result, char *msg)
90{
91 if (result < 0)
92 die("%s: %s",msg, strerror(errno));
93 return result;
94}
95
96struct repoinfo *add_repo(const char *url)
97{
98 struct repoinfo *ret;
99
100 if (++cgit_repolist.count > cgit_repolist.length) {
101 if (cgit_repolist.length == 0)
102 cgit_repolist.length = 8;
103 else
104 cgit_repolist.length *= 2;
105 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
106 cgit_repolist.length *
107 sizeof(struct repoinfo));
108 }
109
110 ret = &cgit_repolist.repos[cgit_repolist.count-1];
111 ret->url = xstrdup(url);
112 ret->name = ret->url;
113 ret->path = NULL;
114 ret->desc = NULL;
115 ret->owner = NULL;
116 ret->group = cgit_repo_group;
117 ret->defbranch = "master";
118 ret->snapshots = cgit_snapshots;
119 ret->enable_log_filecount = cgit_enable_log_filecount;
120 ret->enable_log_linecount = cgit_enable_log_linecount;
121 ret->module_link = cgit_module_link;
122 ret->readme = NULL;
123 return ret;
124}
125
126struct repoinfo *cgit_get_repoinfo(const char *url)
127{
128 int i;
129 struct repoinfo *repo;
130
131 for (i=0; i<cgit_repolist.count; i++) {
132 repo = &cgit_repolist.repos[i];
133 if (!strcmp(repo->url, url))
134 return repo;
135 }
136 return NULL;
137}
138
139void cgit_global_config_cb(const char *name, const char *value)
140{
141 if (!strcmp(name, "root-title"))
142 cgit_root_title = xstrdup(value);
143 else if (!strcmp(name, "css"))
144 cgit_css = xstrdup(value);
145 else if (!strcmp(name, "logo"))
146 cgit_logo = xstrdup(value);
147 else if (!strcmp(name, "index-header"))
148 cgit_index_header = xstrdup(value);
149 else if (!strcmp(name, "logo-link"))
150 cgit_logo_link = xstrdup(value);
151 else if (!strcmp(name, "module-link"))
152 cgit_module_link = xstrdup(value);
153 else if (!strcmp(name, "virtual-root"))
154 cgit_virtual_root = xstrdup(value);
155 else if (!strcmp(name, "nocache"))
156 cgit_nocache = atoi(value);
157 else if (!strcmp(name, "snapshots"))
158 cgit_snapshots = cgit_parse_snapshots_mask(value);
159 else if (!strcmp(name, "enable-index-links"))
160 cgit_enable_index_links = atoi(value);
161 else if (!strcmp(name, "enable-log-filecount"))
162 cgit_enable_log_filecount = atoi(value);
163 else if (!strcmp(name, "enable-log-linecount"))
164 cgit_enable_log_linecount = atoi(value);
165 else if (!strcmp(name, "cache-root"))
166 cgit_cache_root = xstrdup(value);
167 else if (!strcmp(name, "cache-root-ttl"))
168 cgit_cache_root_ttl = atoi(value);
169 else if (!strcmp(name, "cache-repo-ttl"))
170 cgit_cache_repo_ttl = atoi(value);
171 else if (!strcmp(name, "cache-static-ttl"))
172 cgit_cache_static_ttl = atoi(value);
173 else if (!strcmp(name, "cache-dynamic-ttl"))
174 cgit_cache_dynamic_ttl = atoi(value);
175 else if (!strcmp(name, "max-message-length"))
176 cgit_max_msg_len = atoi(value);
177 else if (!strcmp(name, "max-repodesc-length"))
178 cgit_max_repodesc_len = atoi(value);
179 else if (!strcmp(name, "max-commit-count"))
180 cgit_max_commit_count = atoi(value);
181 else if (!strcmp(name, "summary-log"))
182 cgit_summary_log = atoi(value);
183 else if (!strcmp(name, "agefile"))
184 cgit_agefile = xstrdup(value);
185 else if (!strcmp(name, "repo.group"))
186 cgit_repo_group = xstrdup(value);
187 else if (!strcmp(name, "repo.url"))
188 cgit_repo = add_repo(value);
189 else if (!strcmp(name, "repo.name"))
190 cgit_repo->name = xstrdup(value);
191 else if (cgit_repo && !strcmp(name, "repo.path"))
192 cgit_repo->path = xstrdup(value);
193 else if (cgit_repo && !strcmp(name, "repo.desc"))
194 cgit_repo->desc = xstrdup(value);
195 else if (cgit_repo && !strcmp(name, "repo.owner"))
196 cgit_repo->owner = xstrdup(value);
197 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
198 cgit_repo->defbranch = xstrdup(value);
199 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
200 cgit_repo->snapshots = cgit_snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
201 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
202 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
203 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
204 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
205 else if (cgit_repo && !strcmp(name, "repo.module-link"))
206 cgit_repo->module_link= xstrdup(value);
207 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
208 if (*value == '/')
209 cgit_repo->readme = xstrdup(value);
210 else
211 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
212 } else if (!strcmp(name, "include"))
213 cgit_read_config(value, cgit_global_config_cb);
214}
215
216void cgit_querystring_cb(const char *name, const char *value)
217{
218 if (!strcmp(name,"r")) {
219 cgit_query_repo = xstrdup(value);
220 cgit_repo = cgit_get_repoinfo(value);
221 } else if (!strcmp(name, "p")) {
222 cgit_query_page = xstrdup(value);
223 cgit_cmd = cgit_get_cmd_index(value);
224 } else if (!strcmp(name, "url")) {
225 cgit_parse_url(value);
226 } else if (!strcmp(name, "q")) {
227 cgit_query_search = xstrdup(value);
228 } else if (!strcmp(name, "h")) {
229 cgit_query_head = xstrdup(value);
230 cgit_query_has_symref = 1;
231 } else if (!strcmp(name, "id")) {
232 cgit_query_sha1 = xstrdup(value);
233 cgit_query_has_sha1 = 1;
234 } else if (!strcmp(name, "id2")) {
235 cgit_query_sha2 = xstrdup(value);
236 cgit_query_has_sha1 = 1;
237 } else if (!strcmp(name, "ofs")) {
238 cgit_query_ofs = atoi(value);
239 } else if (!strcmp(name, "path")) {
240 cgit_query_path = trim_end(value, '/');
241 } else if (!strcmp(name, "name")) {
242 cgit_query_name = xstrdup(value);
243 }
244}
245
246void *cgit_free_commitinfo(struct commitinfo *info)
247{
248 free(info->author);
249 free(info->author_email);
250 free(info->committer);
251 free(info->committer_email);
252 free(info->subject);
253 free(info);
254 return NULL;
255}
256
257int hextoint(char c)
258{
259 if (c >= 'a' && c <= 'f')
260 return 10 + c - 'a';
261 else if (c >= 'A' && c <= 'F')
262 return 10 + c - 'A';
263 else if (c >= '0' && c <= '9')
264 return c - '0';
265 else
266 return -1;
267}
268
269char *trim_end(const char *str, char c)
270{
271 int len;
272 char *s, *t;
273
274 if (str == NULL)
275 return NULL;
276 t = (char *)str;
277 len = strlen(t);
278 while(len > 0 && t[len - 1] == c)
279 len--;
280
281 if (len == 0)
282 return NULL;
283
284 c = t[len];
285 t[len] = '\0';
286 s = xstrdup(t);
287 t[len] = c;
288 return s;
289}
290
291void cgit_diff_tree_cb(struct diff_queue_struct *q,
292 struct diff_options *options, void *data)
293{
294 int i;
295
296 for (i = 0; i < q->nr; i++) {
297 if (q->queue[i]->status == 'U')
298 continue;
299 ((filepair_fn)data)(q->queue[i]);
300 }
301}
302
303static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
304{
305 enum object_type type;
306
307 if (is_null_sha1(sha1)) {
308 file->ptr = (char *)"";
309 file->size = 0;
310 } else {
311 file->ptr = read_sha1_file(sha1, &type, &file->size);
312 }
313 return 1;
314}
315
316/*
317 * Receive diff-buffers from xdiff and concatenate them as
318 * needed across multiple callbacks.
319 *
320 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
321 * ripped from git and modified to use globals instead of
322 * a special callback-struct.
323 */
324char *diffbuf = NULL;
325int buflen = 0;
326
327int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
328{
329 int i;
330
331 for (i = 0; i < nbuf; i++) {
332 if (mb[i].ptr[mb[i].size-1] != '\n') {
333 /* Incomplete line */
334 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
335 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
336 buflen += mb[i].size;
337 continue;
338 }
339
340 /* we have a complete line */
341 if (!diffbuf) {
342 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
343 continue;
344 }
345 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
346 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
347 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
348 free(diffbuf);
349 diffbuf = NULL;
350 buflen = 0;
351 }
352 if (diffbuf) {
353 ((linediff_fn)priv)(diffbuf, buflen);
354 free(diffbuf);
355 diffbuf = NULL;
356 buflen = 0;
357 }
358 return 0;
359}
360
361int cgit_diff_files(const unsigned char *old_sha1,
362 const unsigned char *new_sha1,
363 linediff_fn fn)
364{
365 mmfile_t file1, file2;
366 xpparam_t diff_params;
367 xdemitconf_t emit_params;
368 xdemitcb_t emit_cb;
369
370 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
371 return 1;
372
373 diff_params.flags = XDF_NEED_MINIMAL;
374 emit_params.ctxlen = 3;
375 emit_params.flags = XDL_EMIT_FUNCNAMES;
376 emit_cb.outf = filediff_cb;
377 emit_cb.priv = fn;
378 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
379 return 0;
380}
381
382void cgit_diff_tree(const unsigned char *old_sha1,
383 const unsigned char *new_sha1,
384 filepair_fn fn)
385{
386 struct diff_options opt;
387 int ret;
388
389 diff_setup(&opt);
390 opt.output_format = DIFF_FORMAT_CALLBACK;
391 opt.detect_rename = 1;
392 opt.recursive = 1;
393 opt.format_callback = cgit_diff_tree_cb;
394 opt.format_callback_data = fn;
395 diff_setup_done(&opt);
396
397 if (old_sha1 && !is_null_sha1(old_sha1))
398 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
399 else
400 ret = diff_root_tree_sha1(new_sha1, "", &opt);
401 diffcore_std(&opt);
402 diff_flush(&opt);
403}
404
405void cgit_diff_commit(struct commit *commit, filepair_fn fn)
406{
407 unsigned char *old_sha1 = NULL;
408
409 if (commit->parents)
410 old_sha1 = commit->parents->item->object.sha1;
411 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
412}