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
15char *cgit_root_title = "Git repository browser";
16char *cgit_css = "/cgit.css";
17char *cgit_logo = "/git-logo.png";
18char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
19char *cgit_module_link = "./?repo=%s&page=commit&id=%s";
20char *cgit_virtual_root = NULL;
21char *cgit_script_name = CGIT_SCRIPT_NAME;
22char *cgit_cache_root = "/var/cache/cgit";
23
24int cgit_nocache = 0;
25int cgit_snapshots = 0;
26int cgit_enable_log_filecount = 0;
27int cgit_enable_log_linecount = 0;
28int cgit_max_lock_attempts = 5;
29int cgit_cache_root_ttl = 5;
30int cgit_cache_repo_ttl = 5;
31int cgit_cache_dynamic_ttl = 5;
32int cgit_cache_static_ttl = -1;
33int cgit_cache_max_create_time = 5;
34
35int cgit_max_msg_len = 60;
36int cgit_max_repodesc_len = 60;
37int cgit_max_commit_count = 50;
38
39int cgit_query_has_symref = 0;
40int cgit_query_has_sha1 = 0;
41
42char *cgit_querystring = NULL;
43char *cgit_query_repo = NULL;
44char *cgit_query_page = NULL;
45char *cgit_query_head = NULL;
46char *cgit_query_search = NULL;
47char *cgit_query_sha1 = NULL;
48char *cgit_query_sha2 = NULL;
49char *cgit_query_path = NULL;
50char *cgit_query_name = NULL;
51int cgit_query_ofs = 0;
52
53int htmlfd = 0;
54
55
56int cgit_get_cmd_index(const char *cmd)
57{
58 static char *cmds[] = {"log", "commit", "diff", "tree", "view", "blob", "snapshot", NULL};
59 int i;
60
61 for(i = 0; cmds[i]; i++)
62 if (!strcmp(cmd, cmds[i]))
63 return i + 1;
64 return 0;
65}
66
67int chk_zero(int result, char *msg)
68{
69 if (result != 0)
70 die("%s: %s", msg, strerror(errno));
71 return result;
72}
73
74int chk_positive(int result, char *msg)
75{
76 if (result <= 0)
77 die("%s: %s", msg, strerror(errno));
78 return result;
79}
80
81struct repoinfo *add_repo(const char *url)
82{
83 struct repoinfo *ret;
84
85 if (++cgit_repolist.count > cgit_repolist.length) {
86 if (cgit_repolist.length == 0)
87 cgit_repolist.length = 8;
88 else
89 cgit_repolist.length *= 2;
90 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
91 cgit_repolist.length *
92 sizeof(struct repoinfo));
93 }
94
95 ret = &cgit_repolist.repos[cgit_repolist.count-1];
96 ret->url = xstrdup(url);
97 ret->name = ret->url;
98 ret->path = NULL;
99 ret->desc = NULL;
100 ret->owner = NULL;
101 ret->defbranch = "master";
102 ret->snapshots = cgit_snapshots;
103 ret->enable_log_filecount = cgit_enable_log_filecount;
104 ret->enable_log_linecount = cgit_enable_log_linecount;
105 ret->module_link = cgit_module_link;
106 return ret;
107}
108
109struct repoinfo *cgit_get_repoinfo(const char *url)
110{
111 int i;
112 struct repoinfo *repo;
113
114 for (i=0; i<cgit_repolist.count; i++) {
115 repo = &cgit_repolist.repos[i];
116 if (!strcmp(repo->url, url))
117 return repo;
118 }
119 return NULL;
120}
121
122void cgit_global_config_cb(const char *name, const char *value)
123{
124 if (!strcmp(name, "root-title"))
125 cgit_root_title = xstrdup(value);
126 else if (!strcmp(name, "css"))
127 cgit_css = xstrdup(value);
128 else if (!strcmp(name, "logo"))
129 cgit_logo = xstrdup(value);
130 else if (!strcmp(name, "logo-link"))
131 cgit_logo_link = xstrdup(value);
132 else if (!strcmp(name, "module-link"))
133 cgit_module_link = xstrdup(value);
134 else if (!strcmp(name, "virtual-root"))
135 cgit_virtual_root = xstrdup(value);
136 else if (!strcmp(name, "nocache"))
137 cgit_nocache = atoi(value);
138 else if (!strcmp(name, "snapshots"))
139 cgit_snapshots = atoi(value);
140 else if (!strcmp(name, "enable-log-filecount"))
141 cgit_enable_log_filecount = atoi(value);
142 else if (!strcmp(name, "enable-log-linecount"))
143 cgit_enable_log_linecount = atoi(value);
144 else if (!strcmp(name, "cache-root"))
145 cgit_cache_root = xstrdup(value);
146 else if (!strcmp(name, "cache-root-ttl"))
147 cgit_cache_root_ttl = atoi(value);
148 else if (!strcmp(name, "cache-repo-ttl"))
149 cgit_cache_repo_ttl = atoi(value);
150 else if (!strcmp(name, "cache-static-ttl"))
151 cgit_cache_static_ttl = atoi(value);
152 else if (!strcmp(name, "cache-dynamic-ttl"))
153 cgit_cache_dynamic_ttl = atoi(value);
154 else if (!strcmp(name, "max-message-length"))
155 cgit_max_msg_len = atoi(value);
156 else if (!strcmp(name, "max-repodesc-length"))
157 cgit_max_repodesc_len = atoi(value);
158 else if (!strcmp(name, "max-commit-count"))
159 cgit_max_commit_count = atoi(value);
160 else if (!strcmp(name, "repo.url"))
161 cgit_repo = add_repo(value);
162 else if (!strcmp(name, "repo.name"))
163 cgit_repo->name = xstrdup(value);
164 else if (cgit_repo && !strcmp(name, "repo.path"))
165 cgit_repo->path = xstrdup(value);
166 else if (cgit_repo && !strcmp(name, "repo.desc"))
167 cgit_repo->desc = xstrdup(value);
168 else if (cgit_repo && !strcmp(name, "repo.owner"))
169 cgit_repo->owner = xstrdup(value);
170 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
171 cgit_repo->defbranch = xstrdup(value);
172 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
173 cgit_repo->snapshots = cgit_snapshots * atoi(value);
174 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
175 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
176 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
177 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
178 else if (cgit_repo && !strcmp(name, "repo.module-link"))
179 cgit_repo->module_link= xstrdup(value);
180 else if (!strcmp(name, "include"))
181 cgit_read_config(value, cgit_global_config_cb);
182}
183
184void cgit_querystring_cb(const char *name, const char *value)
185{
186 if (!strcmp(name,"r")) {
187 cgit_query_repo = xstrdup(value);
188 cgit_repo = cgit_get_repoinfo(value);
189 } else if (!strcmp(name, "p")) {
190 cgit_query_page = xstrdup(value);
191 cgit_cmd = cgit_get_cmd_index(value);
192 } else if (!strcmp(name, "url")) {
193 cgit_parse_url(value);
194 } else if (!strcmp(name, "q")) {
195 cgit_query_search = xstrdup(value);
196 } else if (!strcmp(name, "h")) {
197 cgit_query_head = xstrdup(value);
198 cgit_query_has_symref = 1;
199 } else if (!strcmp(name, "id")) {
200 cgit_query_sha1 = xstrdup(value);
201 cgit_query_has_sha1 = 1;
202 } else if (!strcmp(name, "id2")) {
203 cgit_query_sha2 = xstrdup(value);
204 cgit_query_has_sha1 = 1;
205 } else if (!strcmp(name, "ofs")) {
206 cgit_query_ofs = atoi(value);
207 } else if (!strcmp(name, "path")) {
208 cgit_query_path = xstrdup(value);
209 } else if (!strcmp(name, "name")) {
210 cgit_query_name = xstrdup(value);
211 }
212}
213
214void *cgit_free_commitinfo(struct commitinfo *info)
215{
216 free(info->author);
217 free(info->author_email);
218 free(info->committer);
219 free(info->committer_email);
220 free(info->subject);
221 free(info);
222 return NULL;
223}
224
225int hextoint(char c)
226{
227 if (c >= 'a' && c <= 'f')
228 return 10 + c - 'a';
229 else if (c >= 'A' && c <= 'F')
230 return 10 + c - 'A';
231 else if (c >= '0' && c <= '9')
232 return c - '0';
233 else
234 return -1;
235}
236
237void cgit_diff_tree_cb(struct diff_queue_struct *q,
238 struct diff_options *options, void *data)
239{
240 int i;
241
242 for (i = 0; i < q->nr; i++) {
243 if (q->queue[i]->status == 'U')
244 continue;
245 ((filepair_fn)data)(q->queue[i]);
246 }
247}
248
249static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
250{
251 enum object_type type;
252
253 if (is_null_sha1(sha1)) {
254 file->ptr = (char *)"";
255 file->size = 0;
256 } else {
257 file->ptr = read_sha1_file(sha1, &type, &file->size);
258 }
259 return 1;
260}
261
262/*
263 * Receive diff-buffers from xdiff and concatenate them as
264 * needed across multiple callbacks.
265 *
266 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
267 * ripped from git and modified to use globals instead of
268 * a special callback-struct.
269 */
270char *diffbuf = NULL;
271int buflen = 0;
272
273int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
274{
275 int i;
276
277 for (i = 0; i < nbuf; i++) {
278 if (mb[i].ptr[mb[i].size-1] != '\n') {
279 /* Incomplete line */
280 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
281 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
282 buflen += mb[i].size;
283 continue;
284 }
285
286 /* we have a complete line */
287 if (!diffbuf) {
288 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
289 continue;
290 }
291 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
292 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
293 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
294 free(diffbuf);
295 diffbuf = NULL;
296 buflen = 0;
297 }
298 if (diffbuf) {
299 ((linediff_fn)priv)(diffbuf, buflen);
300 free(diffbuf);
301 diffbuf = NULL;
302 buflen = 0;
303 }
304 return 0;
305}
306
307int cgit_diff_files(const unsigned char *old_sha1,
308 const unsigned char *new_sha1,
309 linediff_fn fn)
310{
311 mmfile_t file1, file2;
312 xpparam_t diff_params;
313 xdemitconf_t emit_params;
314 xdemitcb_t emit_cb;
315
316 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
317 return 1;
318
319 diff_params.flags = XDF_NEED_MINIMAL;
320 emit_params.ctxlen = 3;
321 emit_params.flags = XDL_EMIT_FUNCNAMES;
322 emit_cb.outf = filediff_cb;
323 emit_cb.priv = fn;
324 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
325 return 0;
326}
327
328void cgit_diff_tree(const unsigned char *old_sha1,
329 const unsigned char *new_sha1,
330 filepair_fn fn)
331{
332 struct diff_options opt;
333 int ret;
334
335 diff_setup(&opt);
336 opt.output_format = DIFF_FORMAT_CALLBACK;
337 opt.detect_rename = 1;
338 opt.recursive = 1;
339 opt.format_callback = cgit_diff_tree_cb;
340 opt.format_callback_data = fn;
341 diff_setup_done(&opt);
342
343 if (old_sha1)
344 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
345 else
346 ret = diff_root_tree_sha1(new_sha1, "", &opt);
347 diffcore_std(&opt);
348 diff_flush(&opt);
349}
350
351void cgit_diff_commit(struct commit *commit, filepair_fn fn)
352{
353 unsigned char *old_sha1 = NULL;
354
355 if (commit->parents)
356 old_sha1 = commit->parents->item->object.sha1;
357 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
358}