aboutsummaryrefslogtreecommitdiffstats
path: root/shared.c
blob: 752ceacbb5a31fdead0c4cb600984de176450a52 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
/* shared.c: global vars + some callback functions
 *
 * Copyright (C) 2006 Lars Hjemli
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"

struct repolist cgit_repolist;
struct repoinfo *cgit_repo;

char *cgit_root_title   = "Git repository browser";
char *cgit_css          = "/cgit.css";
char *cgit_logo         = "/git-logo.png";
char *cgit_logo_link    = "http://www.kernel.org/pub/software/scm/git/docs/";
char *cgit_module_link  = "./?repo=%s&page=commit&id=%s";
char *cgit_virtual_root = NULL;
char *cgit_script_name  = CGIT_SCRIPT_NAME;
char *cgit_cache_root   = "/var/cache/cgit";

int cgit_nocache               =  0;
int cgit_snapshots             =  0;
int cgit_max_lock_attempts     =  5;
int cgit_cache_root_ttl        =  5;
int cgit_cache_repo_ttl        =  5;
int cgit_cache_dynamic_ttl     =  5;
int cgit_cache_static_ttl      = -1;
int cgit_cache_max_create_time =  5;

int cgit_max_msg_len = 60;
int cgit_max_repodesc_len = 60;
int cgit_max_commit_count = 50;

int cgit_query_has_symref = 0;
int cgit_query_has_sha1   = 0;

char *cgit_querystring  = NULL;
char *cgit_query_repo   = NULL;
char *cgit_query_page   = NULL;
char *cgit_query_head   = NULL;
char *cgit_query_search = NULL;
char *cgit_query_sha1   = NULL;
char *cgit_query_sha2   = NULL;
char *cgit_query_path   = NULL;
char *cgit_query_name   = NULL;
int   cgit_query_ofs    = 0;

int htmlfd = 0;

int chk_zero(int result, char *msg)
{
	if (result != 0)
		die("%s: %s", msg, strerror(errno));
	return result;
}

int chk_positive(int result, char *msg)
{
	if (result <= 0)
		die("%s: %s", msg, strerror(errno));
	return result;
}

struct repoinfo *add_repo(const char *url)
{
	struct repoinfo *ret;

	if (++cgit_repolist.count > cgit_repolist.length) {
		if (cgit_repolist.length == 0)
			cgit_repolist.length = 8;
		else
			cgit_repolist.length *= 2;
		cgit_repolist.repos = xrealloc(cgit_repolist.repos,
					       cgit_repolist.length *
					       sizeof(struct repoinfo));
	}

	ret = &cgit_repolist.repos[cgit_repolist.count-1];
	ret->url = xstrdup(url);
	ret->name = ret->url;
	ret->path = NULL;
	ret->desc = NULL;
	ret->owner = NULL;
	ret->defbranch = "master";
	ret->snapshots = cgit_snapshots;
	ret->module_link = cgit_module_link;
	return ret;
}

void cgit_global_config_cb(const char *name, const char *value)
{
	if (!strcmp(name, "root-title"))
		cgit_root_title = xstrdup(value);
	else if (!strcmp(name, "css"))
		cgit_css = xstrdup(value);
	else if (!strcmp(name, "logo"))
		cgit_logo = xstrdup(value);
	else if (!strcmp(name, "logo-link"))
		cgit_logo_link = xstrdup(value);
	else if (!strcmp(name, "module-link"))
		cgit_module_link = xstrdup(value);
	else if (!strcmp(name, "virtual-root"))
		cgit_virtual_root = xstrdup(value);
	else if (!strcmp(name, "nocache"))
		cgit_nocache = atoi(value);
	else if (!strcmp(name, "snapshots"))
		cgit_snapshots = atoi(value);
	else if (!strcmp(name, "cache-root"))
		cgit_cache_root = xstrdup(value);
	else if (!strcmp(name, "cache-root-ttl"))
		cgit_cache_root_ttl = atoi(value);
	else if (!strcmp(name, "cache-repo-ttl"))
		cgit_cache_repo_ttl = atoi(value);
	else if (!strcmp(name, "cache-static-ttl"))
		cgit_cache_static_ttl = atoi(value);
	else if (!strcmp(name, "cache-dynamic-ttl"))
		cgit_cache_dynamic_ttl = atoi(value);
	else if (!strcmp(name, "max-message-length"))
		cgit_max_msg_len = atoi(value);
	else if (!strcmp(name, "max-repodesc-length"))
		cgit_max_repodesc_len = atoi(value);
	else if (!strcmp(name, "max-commit-count"))
		cgit_max_commit_count = atoi(value);
	else if (!strcmp(name, "repo.url"))
		cgit_repo = add_repo(value);
	else if (!strcmp(name, "repo.name"))
		cgit_repo->name = xstrdup(value);
	else if (cgit_repo && !strcmp(name, "repo.path"))
		cgit_repo->path = xstrdup(value);
	else if (cgit_repo && !strcmp(name, "repo.desc"))
		cgit_repo->desc = xstrdup(value);
	else if (cgit_repo && !strcmp(name, "repo.owner"))
		cgit_repo->owner = xstrdup(value);
	else if (cgit_repo && !strcmp(name, "repo.defbranch"))
		cgit_repo->defbranch = xstrdup(value);
	else if (cgit_repo && !strcmp(name, "repo.snapshots"))
		cgit_repo->snapshots = atoi(value);
	else if (cgit_repo && !strcmp(name, "repo.module-link"))
		cgit_repo->module_link= xstrdup(value);
	else if (!strcmp(name, "include"))
		cgit_read_config(value, cgit_global_config_cb);
}

void cgit_querystring_cb(const char *name, const char *value)
{
	if (!strcmp(name,"r")) {
		cgit_query_repo = xstrdup(value);
	} else if (!strcmp(name, "p")) {
		cgit_query_page = xstrdup(value);
	} else if (!strcmp(name, "q")) {
		cgit_query_search = xstrdup(value);
	} else if (!strcmp(name, "h")) {
		cgit_query_head = xstrdup(value);
		cgit_query_has_symref = 1;
	} else if (!strcmp(name, "id")) {
		cgit_query_sha1 = xstrdup(value);
		cgit_query_has_sha1 = 1;
	} else if (!strcmp(name, "id2")) {
		cgit_query_sha2 = xstrdup(value);
		cgit_query_has_sha1 = 1;
	} else if (!strcmp(name, "ofs")) {
		cgit_query_ofs = atoi(value);
	} else if (!strcmp(name, "path")) {
		cgit_query_path = xstrdup(value);
	} else if (!strcmp(name, "name")) {
		cgit_query_name = xstrdup(value);
	}
}

void *cgit_free_commitinfo(struct commitinfo *info)
{
	free(info->author);
	free(info->author_email);
	free(info->committer);
	free(info->committer_email);
	free(info->subject);
	free(info);
	return NULL;
}

int hextoint(char c)
{
	if (c >= 'a' && c <= 'f')
		return 10 + c - 'a';
	else if (c >= 'A' && c <= 'F')
		return 10 + c - 'A';
	else if (c >= '0' && c <= '9')
		return c - '0';
	else
		return -1;
}

void cgit_diff_tree_cb(struct diff_queue_struct *q,
		       struct diff_options *options, void *data)
{
	int i;

	for (i = 0; i < q->nr; i++) {
		if (q->queue[i]->status == 'U')
			continue;
		((filepair_fn)data)(q->queue[i]);
	}
}

static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
{
	enum object_type type;

	if (is_null_sha1(sha1)) {
		file->ptr = (char *)"";
		file->size = 0;
	} else {
		file->ptr = read_sha1_file(sha1, &type, &file->size);
	}
	return 1;
}

/*
 * Receive diff-buffers from xdiff and concatenate them as
 * needed across multiple callbacks.
 *
 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
 * ripped from git and modified to use globals instead of
 * a special callback-struct.
 */
char *diffbuf = NULL;
int buflen = 0;

int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
{
	int i;

	for (i = 0; i < nbuf; i++) {
		if (mb[i].ptr[mb[i].size-1] != '\n') {
			/* Incomplete line */
			diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
			memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
			buflen += mb[i].size;
			continue;
		}

		/* we have a complete line */
		if (!diffbuf) {
			((linediff_fn)priv)(mb[i].ptr, mb[i].size);
			continue;
		}
		diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
		memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
		((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
		free(diffbuf);
		diffbuf = NULL;
		buflen = 0;
	}
	if (diffbuf) {
		((linediff_fn)priv)(diffbuf, buflen);
		free(diffbuf);
		diffbuf = NULL;
		buflen = 0;
	}
	return 0;
}

int cgit_diff_files(const unsigned char *old_sha1,
		     const unsigned char *new_sha1,
		     linediff_fn fn)
{
	mmfile_t file1, file2;
	xpparam_t diff_params;
	xdemitconf_t emit_params;
	xdemitcb_t emit_cb;

	if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
		return 1;

	diff_params.flags = XDF_NEED_MINIMAL;
	emit_params.ctxlen = 3;
	emit_params.flags = XDL_EMIT_FUNCNAMES;
	emit_cb.outf = filediff_cb;
	emit_cb.priv = fn;
	xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
	return 0;
}

void cgit_diff_tree(const unsigned char *old_sha1,
		    const unsigned char *new_sha1,
		    filepair_fn fn)
{
	struct diff_options opt;
	int ret;

	diff_setup(&opt);
	opt.output_format = DIFF_FORMAT_CALLBACK;
	opt.detect_rename = 1;
	opt.recursive = 1;
	opt.format_callback = cgit_diff_tree_cb;
	opt.format_callback_data = fn;
	diff_setup_done(&opt);

	if (old_sha1)
		ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
	else
		ret = diff_root_tree_sha1(new_sha1, "", &opt);
	diffcore_std(&opt);
	diff_flush(&opt);
}

void cgit_diff_commit(struct commit *commit, filepair_fn fn)
{
	unsigned char *old_sha1 = NULL;

	if (commit->parents)
		old_sha1 = commit->parents->item->object.sha1;
	cgit_diff_tree(old_sha1, commit->object.sha1, fn);
}