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_commit_count = 50;
34
35int cgit_query_has_symref = 0;
36int cgit_query_has_sha1 = 0;
37
38char *cgit_querystring = NULL;
39char *cgit_query_repo = NULL;
40char *cgit_query_page = NULL;
41char *cgit_query_head = NULL;
42char *cgit_query_search = NULL;
43char *cgit_query_sha1 = NULL;
44char *cgit_query_sha2 = NULL;
45char *cgit_query_path = NULL;
46char *cgit_query_name = NULL;
47int cgit_query_ofs = 0;
48
49int htmlfd = 0;
50
51int chk_zero(int result, char *msg)
52{
53 if (result != 0)
54 die("%s: %s", msg, strerror(errno));
55 return result;
56}
57
58int chk_positive(int result, char *msg)
59{
60 if (result <= 0)
61 die("%s: %s", msg, strerror(errno));
62 return result;
63}
64
65struct repoinfo *add_repo(const char *url)
66{
67 struct repoinfo *ret;
68
69 if (++cgit_repolist.count > cgit_repolist.length) {
70 if (cgit_repolist.length == 0)
71 cgit_repolist.length = 8;
72 else
73 cgit_repolist.length *= 2;
74 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
75 cgit_repolist.length *
76 sizeof(struct repoinfo));
77 }
78
79 ret = &cgit_repolist.repos[cgit_repolist.count-1];
80 ret->url = xstrdup(url);
81 ret->name = ret->url;
82 ret->path = NULL;
83 ret->desc = NULL;
84 ret->owner = NULL;
85 ret->defbranch = "master";
86 ret->snapshots = cgit_snapshots;
87 ret->module_link = cgit_module_link;
88 return ret;
89}
90
91void cgit_global_config_cb(const char *name, const char *value)
92{
93 if (!strcmp(name, "root-title"))
94 cgit_root_title = xstrdup(value);
95 else if (!strcmp(name, "css"))
96 cgit_css = xstrdup(value);
97 else if (!strcmp(name, "logo"))
98 cgit_logo = xstrdup(value);
99 else if (!strcmp(name, "logo-link"))
100 cgit_logo_link = xstrdup(value);
101 else if (!strcmp(name, "module-link"))
102 cgit_module_link = xstrdup(value);
103 else if (!strcmp(name, "virtual-root"))
104 cgit_virtual_root = xstrdup(value);
105 else if (!strcmp(name, "nocache"))
106 cgit_nocache = atoi(value);
107 else if (!strcmp(name, "snapshots"))
108 cgit_snapshots = atoi(value);
109 else if (!strcmp(name, "cache-root"))
110 cgit_cache_root = xstrdup(value);
111 else if (!strcmp(name, "cache-root-ttl"))
112 cgit_cache_root_ttl = atoi(value);
113 else if (!strcmp(name, "cache-repo-ttl"))
114 cgit_cache_repo_ttl = atoi(value);
115 else if (!strcmp(name, "cache-static-ttl"))
116 cgit_cache_static_ttl = atoi(value);
117 else if (!strcmp(name, "cache-dynamic-ttl"))
118 cgit_cache_dynamic_ttl = atoi(value);
119 else if (!strcmp(name, "max-message-length"))
120 cgit_max_msg_len = atoi(value);
121 else if (!strcmp(name, "max-commit-count"))
122 cgit_max_commit_count = atoi(value);
123 else if (!strcmp(name, "repo.url"))
124 cgit_repo = add_repo(value);
125 else if (!strcmp(name, "repo.name"))
126 cgit_repo->name = xstrdup(value);
127 else if (cgit_repo && !strcmp(name, "repo.path"))
128 cgit_repo->path = xstrdup(value);
129 else if (cgit_repo && !strcmp(name, "repo.desc"))
130 cgit_repo->desc = xstrdup(value);
131 else if (cgit_repo && !strcmp(name, "repo.owner"))
132 cgit_repo->owner = xstrdup(value);
133 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
134 cgit_repo->defbranch = xstrdup(value);
135 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
136 cgit_repo->snapshots = atoi(value);
137 else if (cgit_repo && !strcmp(name, "repo.module-link"))
138 cgit_repo->module_link= xstrdup(value);
139 else if (!strcmp(name, "include"))
140 cgit_read_config(value, cgit_global_config_cb);
141}
142
143void cgit_querystring_cb(const char *name, const char *value)
144{
145 if (!strcmp(name,"r")) {
146 cgit_query_repo = xstrdup(value);
147 } else if (!strcmp(name, "p")) {
148 cgit_query_page = xstrdup(value);
149 } else if (!strcmp(name, "q")) {
150 cgit_query_search = xstrdup(value);
151 } else if (!strcmp(name, "h")) {
152 cgit_query_head = xstrdup(value);
153 cgit_query_has_symref = 1;
154 } else if (!strcmp(name, "id")) {
155 cgit_query_sha1 = xstrdup(value);
156 cgit_query_has_sha1 = 1;
157 } else if (!strcmp(name, "id2")) {
158 cgit_query_sha2 = xstrdup(value);
159 cgit_query_has_sha1 = 1;
160 } else if (!strcmp(name, "ofs")) {
161 cgit_query_ofs = atoi(value);
162 } else if (!strcmp(name, "path")) {
163 cgit_query_path = xstrdup(value);
164 } else if (!strcmp(name, "name")) {
165 cgit_query_name = xstrdup(value);
166 }
167}
168
169void *cgit_free_commitinfo(struct commitinfo *info)
170{
171 free(info->author);
172 free(info->author_email);
173 free(info->committer);
174 free(info->committer_email);
175 free(info->subject);
176 free(info);
177 return NULL;
178}
179
180int hextoint(char c)
181{
182 if (c >= 'a' && c <= 'f')
183 return 10 + c - 'a';
184 else if (c >= 'A' && c <= 'F')
185 return 10 + c - 'A';
186 else if (c >= '0' && c <= '9')
187 return c - '0';
188 else
189 return -1;
190}
191
192void cgit_diff_tree_cb(struct diff_queue_struct *q,
193 struct diff_options *options, void *data)
194{
195 int i;
196
197 for (i = 0; i < q->nr; i++) {
198 if (q->queue[i]->status == 'U')
199 continue;
200 ((filepair_fn)data)(q->queue[i]);
201 }
202}
203
204static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
205{
206 enum object_type type;
207
208 if (is_null_sha1(sha1)) {
209 file->ptr = (char *)"";
210 file->size = 0;
211 } else {
212 file->ptr = read_sha1_file(sha1, &type, &file->size);
213 }
214 return 1;
215}
216
217/*
218 * Receive diff-buffers from xdiff and concatenate them as
219 * needed across multiple callbacks.
220 *
221 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
222 * ripped from git and modified to use globals instead of
223 * a special callback-struct.
224 */
225char *diffbuf = NULL;
226int buflen = 0;
227
228int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
229{
230 int i;
231
232 for (i = 0; i < nbuf; i++) {
233 if (mb[i].ptr[mb[i].size-1] != '\n') {
234 /* Incomplete line */
235 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
236 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
237 buflen += mb[i].size;
238 continue;
239 }
240
241 /* we have a complete line */
242 if (!diffbuf) {
243 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
244 continue;
245 }
246 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
247 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
248 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
249 free(diffbuf);
250 diffbuf = NULL;
251 buflen = 0;
252 }
253 if (diffbuf) {
254 ((linediff_fn)priv)(diffbuf, buflen);
255 free(diffbuf);
256 diffbuf = NULL;
257 buflen = 0;
258 }
259 return 0;
260}
261
262int cgit_diff_files(const unsigned char *old_sha1,
263 const unsigned char *new_sha1,
264 linediff_fn fn)
265{
266 mmfile_t file1, file2;
267 xpparam_t diff_params;
268 xdemitconf_t emit_params;
269 xdemitcb_t emit_cb;
270
271 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
272 return 1;
273
274 diff_params.flags = XDF_NEED_MINIMAL;
275 emit_params.ctxlen = 3;
276 emit_params.flags = XDL_EMIT_FUNCNAMES;
277 emit_cb.outf = filediff_cb;
278 emit_cb.priv = fn;
279 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
280 return 0;
281}
282
283void cgit_diff_tree(const unsigned char *old_sha1,
284 const unsigned char *new_sha1,
285 filepair_fn fn)
286{
287 struct diff_options opt;
288 int ret;
289
290 diff_setup(&opt);
291 opt.output_format = DIFF_FORMAT_CALLBACK;
292 opt.detect_rename = 1;
293 opt.recursive = 1;
294 opt.format_callback = cgit_diff_tree_cb;
295 opt.format_callback_data = fn;
296 diff_setup_done(&opt);
297
298 if (old_sha1)
299 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
300 else
301 ret = diff_root_tree_sha1(new_sha1, "", &opt);
302 diffcore_std(&opt);
303 diff_flush(&opt);
304}
305
306void cgit_diff_commit(struct commit *commit, filepair_fn fn)
307{
308 unsigned char *old_sha1 = NULL;
309
310 if (commit->parents)
311 old_sha1 = commit->parents->item->object.sha1;
312 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
313}