summaryrefslogtreecommitdiff
path: root/source4/torture/local/iconv.c
blob: 8057d4faf4eee253ab26d8209af082b1302cfed3 (plain)
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
/* 
   Unix SMB/CIFS implementation.

   local testing of iconv routines. This tests the system iconv code against
   the built-in iconv code

   Copyright (C) Andrew Tridgell 2004
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"

/*
  generate a UTF-16LE buffer for a given unicode codepoint
*/
static int gen_codepoint(unsigned int codepoint,
			  char *buf, size_t *size)
{
	static iconv_t cd;
	uint8_t in[4];
	char *ptr_in;
	size_t size_in, size_out, ret;
	if (!cd) {
		cd = iconv_open("UTF-16LE", "UCS-4LE");
	}

	in[0] = codepoint & 0xFF;
	in[1] = (codepoint>>8) & 0xFF;
	in[2] = (codepoint>>16) & 0xFF;
	in[3] = (codepoint>>24) & 0xFF;

	ptr_in = in;
	size_in = 4;
	size_out = 8;

	ret = iconv(cd, &ptr_in, &size_in, &buf, &size_out);

	*size = 8 - size_out;

	return ret;
}


/*
  work out the unicode codepoint of the first UTF-8 character in the buffer
*/
static unsigned int get_codepoint(char *buf, size_t size, const char *charset)
{
	iconv_t cd;
	uint8_t out[4];
	char *ptr_out;
	size_t size_out, size_in, ret;

	cd = iconv_open("UCS-4LE", charset);

	size_in = size;
	ptr_out = out;
	size_out = sizeof(out);
	memset(out, 0, sizeof(out));

	ret = iconv(cd, &buf, &size_in, &ptr_out, &size_out);

	iconv_close(cd);

	return out[0] | (out[1]<<8) | (out[2]<<16) | (out[3]<<24);
}

/*
  display a buffer with name prefix
*/
static void show_buf(const char *name, uint8_t *buf, size_t size)
{
	int i;
	printf("%s ", name);
	for (i=0;i<size;i++) {
		printf("%02x ", buf[i]);
	}
	printf("\n");
}

/*
  given a UTF-16LE buffer, test the system and built-in iconv code to
  make sure they do exactly the same thing in converting the buffer to
  "charset", then convert it back again and ensure we get the same
  buffer back
*/
static int test_buffer(uint8_t *inbuf, size_t size, const char *charset)
{
	uint8_t buf1[1000], buf2[1000], buf3[1000];
	size_t outsize1, outsize2, outsize3;
	const char *ptr_in;
	char *ptr_out;
	size_t size_in1, size_in2, size_in3;
	size_t ret1, ret2, ret3, len1, len2;
	int ok = 1;
	int errno1, errno2;
	static iconv_t cd;
	static smb_iconv_t cd2, cd3;
	static const char *last_charset;

	if (cd && last_charset) {
		iconv_close(cd);
		smb_iconv_close(cd2);
		smb_iconv_close(cd3);
		cd = NULL;
	}

	if (!cd) {
		cd = iconv_open(charset, "UTF-16LE");
		cd2 = smb_iconv_open(charset, "UTF-16LE");
		cd3 = smb_iconv_open("UTF-16LE", charset);
		last_charset = charset;
	}

#if 0
	int i;
	for (i=0;i<50;i++) {
		ptr_in = inbuf;
		ptr_out = buf1;
		size_in1 = size;
		outsize1 = sizeof(buf1);

		memset(ptr_out, 0, outsize1);
		errno = 0;
		ret1 = smb_iconv(cd2, &ptr_in, &size_in1, &ptr_out, &outsize1);
		errno1 = errno;
	}
#endif

	ptr_in = inbuf;
	ptr_out = buf1;
	size_in1 = size;
	outsize1 = sizeof(buf1);

	memset(ptr_out, 0, outsize1);
	errno = 0;
	ret1 = smb_iconv(cd2, &ptr_in, &size_in1, &ptr_out, &outsize1);
	errno1 = errno;

	ptr_in = inbuf;
	ptr_out = buf2;
	size_in2 = size;
	outsize2 = sizeof(buf2);
	
	memset(ptr_out, 0, outsize2);
	errno = 0;
	ret2 = iconv(cd, &ptr_in, &size_in2, &ptr_out, &outsize2);
	errno2 = errno;

	len1 = sizeof(buf1) - outsize1;
	len2 = sizeof(buf2) - outsize2;

	/* codepoints above 1M are not interesting for now */
	if (len2 > len1 && 
	    memcmp(buf1, buf2, len1) == 0 && 
	    get_codepoint(buf2+len1, len2-len1, charset) >= (1<<20)) {
		return ok;
	}
	if (len1 > len2 && 
	    memcmp(buf1, buf2, len2) == 0 && 
	    get_codepoint(buf1+len2, len1-len2, charset) >= (1<<20)) {
		return ok;
	}

	if (ret1 != ret2) {
		printf("ret1=%d ret2=%d\n", ret1, ret2);
		ok = 0;
	}

	if (errno1 != errno2) {
		printf("e1=%s e2=%s\n", strerror(errno1), strerror(errno2));
		show_buf(" rem1:", inbuf+(size-size_in1), size_in1);
		show_buf(" rem2:", inbuf+(size-size_in2), size_in2);
		ok = 0;
	}
	
	if (outsize1 != outsize2) {
		printf("\noutsize mismatch outsize1=%d outsize2=%d\n",
		       outsize1, outsize2);
		ok = 0;
	}
	
	if (size_in1 != size_in2) {
		printf("\nsize_in mismatch size_in1=%d size_in2=%d\n",
		       size_in1, size_in2);
		ok = 0;
	}

	if (!ok ||
	    len1 != len2 ||
	    memcmp(buf1, buf2, len1) != 0) {
		printf("\nsize=%d ret1=%d ret2=%d\n", size, ret1, ret2);
		show_buf(" IN1:", inbuf, size-size_in1);
		show_buf(" IN2:", inbuf, size-size_in2);
		show_buf("OUT1:", buf1, len1);
		show_buf("OUT2:", buf2, len2);
		if (len2 > len1 && memcmp(buf1, buf2, len1) == 0) {
			printf("next codepoint is %u\n", 
			       get_codepoint(buf2+len1, len2-len1, charset));
		}
		if (len1 > len2 && memcmp(buf1, buf2, len2) == 0) {
			printf("next codepoint is %u\n", 
			       get_codepoint(buf1+len2,len1-len2, charset));
		}

		ok = 0;
	}
	
	size = size - size_in1;
	ptr_in = buf1;
	ptr_out = buf3;
	size_in3 = len1;
	outsize3 = sizeof(buf3);

	memset(ptr_out, 0, outsize3);
	ret3 = smb_iconv(cd3, &ptr_in, &size_in3, &ptr_out, &outsize3);
	
	if (ret3 != 0) {
		printf("pull failed - %s\n", strerror(errno));
		ok = 0;
	}
	
	if (outsize3 != sizeof(buf3) - size) {
		printf("wrong outsize3 - %d should be %d\n", 
		       outsize3, sizeof(buf3) - size);
		ok = 0;
	}
	
	if (memcmp(buf3, inbuf, size) != 0) {
		int i;
		printf("pull bytes mismatch:\n");
		show_buf("inbuf", inbuf, size);
		show_buf(" buf3", buf3, size);
		ok = 0;
	}

	if (!ok) {
		printf("test_buffer failed for charset %s\n", charset);
	}

	return ok;
}

BOOL torture_local_iconv(int dummy) 
{
	size_t size;
	unsigned char inbuf[1000];
	int ok = 1;
	unsigned int codepoint, i, c;

	srandom(time(NULL));

	printf("Testing first 1M codepoints\n");
	for (codepoint=0;ok && codepoint<(1<<20);codepoint++) {
		if (gen_codepoint(codepoint, inbuf, &size) != 0) {
			continue;
		}

		if (codepoint % 100 == 0) {
			printf("codepoint=%u   \r", codepoint);
		}

		ok = test_buffer(inbuf, size, "UTF-8");
	}


	printf("Testing 5M random UTF-16LE sequences\n");
	for (i=0;ok && i<500000;i++) {
		if (i % 100 == 0) {
			printf("i=%u              \r", i);
		}

		size = random() % 100;
		for (c=0;c<size;c++) {
			if (random() % 100 < 80) {
				inbuf[c] = random() % 128;
			} else {
				inbuf[c] = random();
			}
			if (random() % 10 == 0) {
				inbuf[c] |= 0xd8;
			}
			if (random() % 10 == 0) {
				inbuf[c] |= 0xdc;
			}
		}
		ok &= test_buffer(inbuf, size, "UTF-8");
		ok &= test_buffer(inbuf, size, "CP850");
	}

	return ok == 1;
}