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;
13
14char *cgit_root_title = "Git repository browser";
15char *cgit_css = "/cgit.css";
16char *cgit_logo = "/git-logo.png";
17char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
18char *cgit_module_link = "./?repo=%s&page=commit&id=%s";
19char *cgit_virtual_root = NULL;
20char *cgit_script_name = CGIT_SCRIPT_NAME;
21char *cgit_cache_root = "/var/cache/cgit";
22
23int cgit_nocache = 0;
24int cgit_snapshots = 0;
25int cgit_max_lock_attempts = 5;
26int cgit_cache_root_ttl = 5;
27int cgit_cache_repo_ttl = 5;
28int cgit_cache_dynamic_ttl = 5;
29int cgit_cache_static_ttl = -1;
30int cgit_cache_max_create_time = 5;
31
32int cgit_max_msg_len = 60;
33int cgit_max_repodesc_len = 60;
34int cgit_max_commit_count = 50;
35
36int cgit_query_has_symref = 0;
37int cgit_query_has_sha1 = 0;
38
39char *cgit_querystring = NULL;
40char *cgit_query_repo = NULL;
41char *cgit_query_page = NULL;
42char *cgit_query_head = NULL;
43char *cgit_query_search = NULL;
44char *cgit_query_sha1 = NULL;
45char *cgit_query_sha2 = NULL;
46char *cgit_query_path = NULL;
47char *cgit_query_name = NULL;
48int cgit_query_ofs = 0;
49
50int htmlfd = 0;
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
66struct repoinfo *add_repo(const char *url)
67{
68 struct repoinfo *ret;
69
70 if (++cgit_repolist.count > cgit_repolist.length) {
71 if (cgit_repolist.length == 0)
72 cgit_repolist.length = 8;
73 else
74 cgit_repolist.length *= 2;
75 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
76 cgit_repolist.length *
77 sizeof(struct repoinfo));
78 }
79
80 ret = &cgit_repolist.repos[cgit_repolist.count-1];
81 ret->url = xstrdup(url);
82 ret->name = ret->url;
83 ret->path = NULL;
84 ret->desc = NULL;
85 ret->owner = NULL;
86 ret->defbranch = "master";
87 ret->snapshots = cgit_snapshots;
88 ret->module_link = cgit_module_link;
89 return ret;
90}
91
92void cgit_global_config_cb(const char *name, const char *value)
93{
94 if (!strcmp(name, "root-title"))
95 cgit_root_title = xstrdup(value);
96 else if (!strcmp(name, "css"))
97 cgit_css = xstrdup(value);
98 else if (!strcmp(name, "logo"))
99 cgit_logo = xstrdup(value);
100 else if (!strcmp(name, "logo-link"))
101 cgit_logo_link = xstrdup(value);
102 else if (!strcmp(name, "module-link"))
103 cgit_module_link = xstrdup(value);
104 else if (!strcmp(name, "virtual-root"))
105 cgit_virtual_root = xstrdup(value);
106 else if (!strcmp(name, "nocache"))
107 cgit_nocache = atoi(value);
108 else if (!strcmp(name, "snapshots"))
109 cgit_snapshots = atoi(value);
110 else if (!strcmp(name, "cache-root"))
111 cgit_cache_root = xstrdup(value);
112 else if (!strcmp(name, "cache-root-ttl"))
113 cgit_cache_root_ttl = atoi(value);
114 else if (!strcmp(name, "cache-repo-ttl"))
115 cgit_cache_repo_ttl = atoi(value);
116 else if (!strcmp(name, "cache-static-ttl"))
117 cgit_cache_static_ttl = atoi(value);
118 else if (!strcmp(name, "cache-dynamic-ttl"))
119 cgit_cache_dynamic_ttl = atoi(value);
120 else if (!strcmp(name, "max-message-length"))
121 cgit_max_msg_len = atoi(value);
122 else if (!strcmp(name, "max-repodesc-length"))
123 cgit_max_repodesc_len = atoi(value);
124 else if (!strcmp(name, "max-commit-count"))
125 cgit_max_commit_count = atoi(value);
126 else if (!strcmp(name, "repo.url"))
127 cgit_repo = add_repo(value);
128 else if (!strcmp(name, "repo.name"))
129 cgit_repo->name = xstrdup(value);
130 else if (cgit_repo && !strcmp(name, "repo.path"))
131 cgit_repo->path = xstrdup(value);
132 else if (cgit_repo && !strcmp(name, "repo.desc"))
133 cgit_repo->desc = xstrdup(value);
134 else if (cgit_repo && !strcmp(name, "repo.owner"))
135 cgit_repo->owner = xstrdup(value);
136 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
137 cgit_repo->defbranch = xstrdup(value);
138 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
139 cgit_repo->snapshots = atoi(value);
140 else if (cgit_repo && !strcmp(name, "repo.module-link"))
141 cgit_repo->module_link= xstrdup(value);
142 else if (!strcmp(name, "include"))
143 cgit_read_config(value, cgit_global_config_cb);
144}
145
146void cgit_querystring_cb(const char *name, const char *value)
147{
148 if (!strcmp(name,"r")) {
149 cgit_query_repo = xstrdup(value);
150 } else if (!strcmp(name, "p")) {
151 cgit_query_page = xstrdup(value);
152 } else if (!strcmp(name, "q")) {
153 cgit_query_search = xstrdup(value);
154 } else if (!strcmp(name, "h")) {
155 cgit_query_head = xstrdup(value);
156 cgit_query_has_symref = 1;
157 } else if (!strcmp(name, "id")) {
158 cgit_query_sha1 = xstrdup(value);
159 cgit_query_has_sha1 = 1;
160 } else if (!strcmp(name, "id2")) {
161 cgit_query_sha2 = xstrdup(value);
162 cgit_query_has_sha1 = 1;
163 } else if (!strcmp(name, "ofs")) {
164 cgit_query_ofs = atoi(value);
165 } else if (!strcmp(name, "path")) {
166 cgit_query_path = xstrdup(value);
167 } else if (!strcmp(name, "name")) {
168 cgit_query_name = xstrdup(value);
169 }
170}
171
172void *cgit_free_commitinfo(struct commitinfo *info)
173{
174 free(info->author);
175 free(info->author_email);
176 free(info->committer);
177 free(info->committer_email);
178 free(info->subject);
179 free(info);
180 return NULL;
181}
182
183int hextoint(char c)
184{
185 if (c >= 'a' && c <= 'f')
186 return 10 + c - 'a';
187 else if (c >= 'A' && c <= 'F')
188 return 10 + c - 'A';
189 else if (c >= '0' && c <= '9')
190 return c - '0';
191 else
192 return -1;
193}
194
195void cgit_diff_tree_cb(struct diff_queue_struct *q,
196 struct diff_options *options, void *data)
197{
198 int i;
199
200 for (i = 0; i < q->nr; i++) {
201 if (q->queue[i]->status == 'U')
202 continue;
203 ((filepair_fn)data)(q->queue[i]);
204 }
205}
206
207static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
208{
209 enum object_type type;
210
211 if (is_null_sha1(sha1)) {
212 file->ptr = (char *)"";
213 file->size = 0;
214 } else {
215 file->ptr = read_sha1_file(sha1, &type, &file->size);
216 }
217 return 1;
218}
219
220/*
221 * Receive diff-buffers from xdiff and concatenate them as
222 * needed across multiple callbacks.
223 *
224 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
225 * ripped from git and modified to use globals instead of
226 * a special callback-struct.
227 */
228char *diffbuf = NULL;
229int buflen = 0;
230
231int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
232{
233 int i;
234
235 for (i = 0; i < nbuf; i++) {
236 if (mb[i].ptr[mb[i].size-1] != '\n') {
237 /* Incomplete line */
238 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
239 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
240 buflen += mb[i].size;
241 continue;
242 }
243
244 /* we have a complete line */
245 if (!diffbuf) {
246 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
247 continue;
248 }
249 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
250 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
251 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
252 free(diffbuf);
253 diffbuf = NULL;
254 buflen = 0;
255 }
256 if (diffbuf) {
257 ((linediff_fn)priv)(diffbuf, buflen);
258 free(diffbuf);
259 diffbuf = NULL;
260 buflen = 0;
261 }
262 return 0;
263}
264
265int cgit_diff_files(const unsigned char *old_sha1,
266 const unsigned char *new_sha1,
267 linediff_fn fn)
268{
269 mmfile_t file1, file2;
270 xpparam_t diff_params;
271 xdemitconf_t emit_params;
272 xdemitcb_t emit_cb;
273
274 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
275 return 1;
276
277 diff_params.flags = XDF_NEED_MINIMAL;
278 emit_params.ctxlen = 3;
279 emit_params.flags = XDL_EMIT_FUNCNAMES;
280 emit_cb.outf = filediff_cb;
281 emit_cb.priv = fn;
282 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
283 return 0;
284}
285
286void cgit_diff_tree(const unsigned char *old_sha1,
287 const unsigned char *new_sha1,
288 filepair_fn fn)
289{
290 struct diff_options opt;
291 int ret;
292
293 diff_setup(&opt);
294 opt.output_format = DIFF_FORMAT_CALLBACK;
295 opt.detect_rename = 1;
296 opt.recursive = 1;
297 opt.format_callback = cgit_diff_tree_cb;
298 opt.format_callback_data = fn;
299 diff_setup_done(&opt);
300
301 if (old_sha1)
302 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
303 else
304 ret = diff_root_tree_sha1(new_sha1, "", &opt);
305 diffcore_std(&opt);
306 diff_flush(&opt);
307}
308
309void cgit_diff_commit(struct commit *commit, filepair_fn fn)
310{
311 unsigned char *old_sha1 = NULL;
312
313 if (commit->parents)
314 old_sha1 = commit->parents->item->object.sha1;
315 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
316}