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_index_header = NULL;
19char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
20char *cgit_module_link = "./?repo=%s&page=commit&id=%s";
21char *cgit_agefile = "info/web/last-modified";
22char *cgit_virtual_root = NULL;
23char *cgit_script_name = CGIT_SCRIPT_NAME;
24char *cgit_cache_root = "/var/cache/cgit";
25char *cgit_repo_group = NULL;
26
27int cgit_nocache = 0;
28int cgit_snapshots = 0;
29int cgit_enable_log_filecount = 0;
30int cgit_enable_log_linecount = 0;
31int cgit_max_lock_attempts = 5;
32int cgit_cache_root_ttl = 5;
33int cgit_cache_repo_ttl = 5;
34int cgit_cache_dynamic_ttl = 5;
35int cgit_cache_static_ttl = -1;
36int cgit_cache_max_create_time = 5;
37int cgit_summary_log = 0;
38
39int cgit_max_msg_len = 60;
40int cgit_max_repodesc_len = 60;
41int cgit_max_commit_count = 50;
42
43int cgit_query_has_symref = 0;
44int cgit_query_has_sha1 = 0;
45
46char *cgit_querystring = NULL;
47char *cgit_query_repo = NULL;
48char *cgit_query_page = NULL;
49char *cgit_query_head = NULL;
50char *cgit_query_search = NULL;
51char *cgit_query_sha1 = NULL;
52char *cgit_query_sha2 = NULL;
53char *cgit_query_path = NULL;
54char *cgit_query_name = NULL;
55int cgit_query_ofs = 0;
56
57int htmlfd = 0;
58
59
60int cgit_get_cmd_index(const char *cmd)
61{
62 static char *cmds[] = {"log", "commit", "diff", "tree", "view", "blob", "snapshot", NULL};
63 int i;
64
65 for(i = 0; cmds[i]; i++)
66 if (!strcmp(cmd, cmds[i]))
67 return i + 1;
68 return 0;
69}
70
71int chk_zero(int result, char *msg)
72{
73 if (result != 0)
74 die("%s: %s", msg, strerror(errno));
75 return result;
76}
77
78int chk_positive(int result, char *msg)
79{
80 if (result <= 0)
81 die("%s: %s", msg, strerror(errno));
82 return result;
83}
84
85struct repoinfo *add_repo(const char *url)
86{
87 struct repoinfo *ret;
88
89 if (++cgit_repolist.count > cgit_repolist.length) {
90 if (cgit_repolist.length == 0)
91 cgit_repolist.length = 8;
92 else
93 cgit_repolist.length *= 2;
94 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
95 cgit_repolist.length *
96 sizeof(struct repoinfo));
97 }
98
99 ret = &cgit_repolist.repos[cgit_repolist.count-1];
100 ret->url = xstrdup(url);
101 ret->name = ret->url;
102 ret->path = NULL;
103 ret->desc = NULL;
104 ret->owner = NULL;
105 ret->group = cgit_repo_group;
106 ret->defbranch = "master";
107 ret->snapshots = cgit_snapshots;
108 ret->enable_log_filecount = cgit_enable_log_filecount;
109 ret->enable_log_linecount = cgit_enable_log_linecount;
110 ret->module_link = cgit_module_link;
111 ret->readme = NULL;
112 return ret;
113}
114
115struct repoinfo *cgit_get_repoinfo(const char *url)
116{
117 int i;
118 struct repoinfo *repo;
119
120 for (i=0; i<cgit_repolist.count; i++) {
121 repo = &cgit_repolist.repos[i];
122 if (!strcmp(repo->url, url))
123 return repo;
124 }
125 return NULL;
126}
127
128void cgit_global_config_cb(const char *name, const char *value)
129{
130 if (!strcmp(name, "root-title"))
131 cgit_root_title = xstrdup(value);
132 else if (!strcmp(name, "css"))
133 cgit_css = xstrdup(value);
134 else if (!strcmp(name, "logo"))
135 cgit_logo = xstrdup(value);
136 else if (!strcmp(name, "index-header"))
137 cgit_index_header = xstrdup(value);
138 else if (!strcmp(name, "logo-link"))
139 cgit_logo_link = xstrdup(value);
140 else if (!strcmp(name, "module-link"))
141 cgit_module_link = xstrdup(value);
142 else if (!strcmp(name, "virtual-root"))
143 cgit_virtual_root = xstrdup(value);
144 else if (!strcmp(name, "nocache"))
145 cgit_nocache = atoi(value);
146 else if (!strcmp(name, "snapshots"))
147 cgit_snapshots = atoi(value);
148 else if (!strcmp(name, "enable-log-filecount"))
149 cgit_enable_log_filecount = atoi(value);
150 else if (!strcmp(name, "enable-log-linecount"))
151 cgit_enable_log_linecount = atoi(value);
152 else if (!strcmp(name, "cache-root"))
153 cgit_cache_root = xstrdup(value);
154 else if (!strcmp(name, "cache-root-ttl"))
155 cgit_cache_root_ttl = atoi(value);
156 else if (!strcmp(name, "cache-repo-ttl"))
157 cgit_cache_repo_ttl = atoi(value);
158 else if (!strcmp(name, "cache-static-ttl"))
159 cgit_cache_static_ttl = atoi(value);
160 else if (!strcmp(name, "cache-dynamic-ttl"))
161 cgit_cache_dynamic_ttl = atoi(value);
162 else if (!strcmp(name, "max-message-length"))
163 cgit_max_msg_len = atoi(value);
164 else if (!strcmp(name, "max-repodesc-length"))
165 cgit_max_repodesc_len = atoi(value);
166 else if (!strcmp(name, "max-commit-count"))
167 cgit_max_commit_count = atoi(value);
168 else if (!strcmp(name, "summary-log"))
169 cgit_summary_log = atoi(value);
170 else if (!strcmp(name, "agefile"))
171 cgit_agefile = xstrdup(value);
172 else if (!strcmp(name, "repo.group"))
173 cgit_repo_group = xstrdup(value);
174 else if (!strcmp(name, "repo.url"))
175 cgit_repo = add_repo(value);
176 else if (!strcmp(name, "repo.name"))
177 cgit_repo->name = xstrdup(value);
178 else if (cgit_repo && !strcmp(name, "repo.path"))
179 cgit_repo->path = xstrdup(value);
180 else if (cgit_repo && !strcmp(name, "repo.desc"))
181 cgit_repo->desc = xstrdup(value);
182 else if (cgit_repo && !strcmp(name, "repo.owner"))
183 cgit_repo->owner = xstrdup(value);
184 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
185 cgit_repo->defbranch = xstrdup(value);
186 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
187 cgit_repo->snapshots = cgit_snapshots * atoi(value);
188 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
189 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
190 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
191 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
192 else if (cgit_repo && !strcmp(name, "repo.module-link"))
193 cgit_repo->module_link= xstrdup(value);
194 else if (cgit_repo && !strcmp(name, "repo.readme") && value != NULL) {
195 if (*value == '/')
196 cgit_repo->readme = xstrdup(value);
197 else
198 cgit_repo->readme = xstrdup(fmt("%s/%s", cgit_repo->path, value));
199 } else if (!strcmp(name, "include"))
200 cgit_read_config(value, cgit_global_config_cb);
201}
202
203void cgit_querystring_cb(const char *name, const char *value)
204{
205 if (!strcmp(name,"r")) {
206 cgit_query_repo = xstrdup(value);
207 cgit_repo = cgit_get_repoinfo(value);
208 } else if (!strcmp(name, "p")) {
209 cgit_query_page = xstrdup(value);
210 cgit_cmd = cgit_get_cmd_index(value);
211 } else if (!strcmp(name, "url")) {
212 cgit_parse_url(value);
213 } else if (!strcmp(name, "q")) {
214 cgit_query_search = xstrdup(value);
215 } else if (!strcmp(name, "h")) {
216 cgit_query_head = xstrdup(value);
217 cgit_query_has_symref = 1;
218 } else if (!strcmp(name, "id")) {
219 cgit_query_sha1 = xstrdup(value);
220 cgit_query_has_sha1 = 1;
221 } else if (!strcmp(name, "id2")) {
222 cgit_query_sha2 = xstrdup(value);
223 cgit_query_has_sha1 = 1;
224 } else if (!strcmp(name, "ofs")) {
225 cgit_query_ofs = atoi(value);
226 } else if (!strcmp(name, "path")) {
227 cgit_query_path = xstrdup(value);
228 } else if (!strcmp(name, "name")) {
229 cgit_query_name = xstrdup(value);
230 }
231}
232
233void *cgit_free_commitinfo(struct commitinfo *info)
234{
235 free(info->author);
236 free(info->author_email);
237 free(info->committer);
238 free(info->committer_email);
239 free(info->subject);
240 free(info);
241 return NULL;
242}
243
244int hextoint(char c)
245{
246 if (c >= 'a' && c <= 'f')
247 return 10 + c - 'a';
248 else if (c >= 'A' && c <= 'F')
249 return 10 + c - 'A';
250 else if (c >= '0' && c <= '9')
251 return c - '0';
252 else
253 return -1;
254}
255
256void cgit_diff_tree_cb(struct diff_queue_struct *q,
257 struct diff_options *options, void *data)
258{
259 int i;
260
261 for (i = 0; i < q->nr; i++) {
262 if (q->queue[i]->status == 'U')
263 continue;
264 ((filepair_fn)data)(q->queue[i]);
265 }
266}
267
268static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
269{
270 enum object_type type;
271
272 if (is_null_sha1(sha1)) {
273 file->ptr = (char *)"";
274 file->size = 0;
275 } else {
276 file->ptr = read_sha1_file(sha1, &type, &file->size);
277 }
278 return 1;
279}
280
281/*
282 * Receive diff-buffers from xdiff and concatenate them as
283 * needed across multiple callbacks.
284 *
285 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
286 * ripped from git and modified to use globals instead of
287 * a special callback-struct.
288 */
289char *diffbuf = NULL;
290int buflen = 0;
291
292int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
293{
294 int i;
295
296 for (i = 0; i < nbuf; i++) {
297 if (mb[i].ptr[mb[i].size-1] != '\n') {
298 /* Incomplete line */
299 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
300 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
301 buflen += mb[i].size;
302 continue;
303 }
304
305 /* we have a complete line */
306 if (!diffbuf) {
307 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
308 continue;
309 }
310 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
311 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
312 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
313 free(diffbuf);
314 diffbuf = NULL;
315 buflen = 0;
316 }
317 if (diffbuf) {
318 ((linediff_fn)priv)(diffbuf, buflen);
319 free(diffbuf);
320 diffbuf = NULL;
321 buflen = 0;
322 }
323 return 0;
324}
325
326int cgit_diff_files(const unsigned char *old_sha1,
327 const unsigned char *new_sha1,
328 linediff_fn fn)
329{
330 mmfile_t file1, file2;
331 xpparam_t diff_params;
332 xdemitconf_t emit_params;
333 xdemitcb_t emit_cb;
334
335 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
336 return 1;
337
338 diff_params.flags = XDF_NEED_MINIMAL;
339 emit_params.ctxlen = 3;
340 emit_params.flags = XDL_EMIT_FUNCNAMES;
341 emit_cb.outf = filediff_cb;
342 emit_cb.priv = fn;
343 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
344 return 0;
345}
346
347void cgit_diff_tree(const unsigned char *old_sha1,
348 const unsigned char *new_sha1,
349 filepair_fn fn)
350{
351 struct diff_options opt;
352 int ret;
353
354 diff_setup(&opt);
355 opt.output_format = DIFF_FORMAT_CALLBACK;
356 opt.detect_rename = 1;
357 opt.recursive = 1;
358 opt.format_callback = cgit_diff_tree_cb;
359 opt.format_callback_data = fn;
360 diff_setup_done(&opt);
361
362 if (old_sha1)
363 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
364 else
365 ret = diff_root_tree_sha1(new_sha1, "", &opt);
366 diffcore_std(&opt);
367 diff_flush(&opt);
368}
369
370void cgit_diff_commit(struct commit *commit, filepair_fn fn)
371{
372 unsigned char *old_sha1 = NULL;
373
374 if (commit->parents)
375 old_sha1 = commit->parents->item->object.sha1;
376 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
377}