Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/asn1/a_mbstr.c	Lines:	81	195	41.5 %
Date:	2016-12-06	Branches:	35	100	35.0 %


/* $OpenBSD: a_mbstr.c,v 1.22 2015/07/16 02:18:58 miod Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <ctype.h>
#include <stdio.h>
#include <string.h>

#include <openssl/asn1.h>
#include <openssl/err.h>

#include "asn1_locl.h"

static int traverse_string(const unsigned char *p, int len, int inform,
    int (*rfunc)(unsigned long value, void *in), void *arg);
static int in_utf8(unsigned long value, void *arg);
static int out_utf8(unsigned long value, void *arg);
static int type_str(unsigned long value, void *arg);
static int cpy_asc(unsigned long value, void *arg);
static int cpy_bmp(unsigned long value, void *arg);
static int cpy_univ(unsigned long value, void *arg);
static int cpy_utf8(unsigned long value, void *arg);
static int is_printable(unsigned long value);

/* These functions take a string in UTF8, ASCII or multibyte form and
 * a mask of permissible ASN1 string types. It then works out the minimal
 * type (using the order Printable < IA5 < T61 < BMP < Universal < UTF8)
 * and creates a string of the correct type with the supplied data.
 * Yes this is horrible: it has to be :-(
 * The 'ncopy' form checks minimum and maximum size limits too.
 */

int
ASN1_mbstring_copy(ASN1_STRING **out, const unsigned char *in, int len,
    int inform, unsigned long mask)
{
	return ASN1_mbstring_ncopy(out, in, len, inform, mask, 0, 0);
}

int
ASN1_mbstring_ncopy(ASN1_STRING **out, const unsigned char *in, int len,
    int inform, unsigned long mask, long minsize, long maxsize)
{
	int str_type;
	int ret;
	char free_out;
	int outform, outlen = 0;
	ASN1_STRING *dest;
	unsigned char *p;
	int nchar;
	int (*cpyfunc)(unsigned long, void *) = NULL;

	if (len < 0)
		len = strlen((const char *)in);
	if (!mask)
		mask = DIRSTRING_TYPE;

	/* First do a string check and work out the number of characters */
	switch (inform) {
	case MBSTRING_BMP:
		if (len & 1) {
			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
			    ASN1_R_INVALID_BMPSTRING_LENGTH);
			return -1;
		}
		nchar = len >> 1;
		break;

	case MBSTRING_UNIV:
		if (len & 3) {
			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
			    ASN1_R_INVALID_UNIVERSALSTRING_LENGTH);
			return -1;
		}
		nchar = len >> 2;
		break;

	case MBSTRING_UTF8:
		nchar = 0;
		/* This counts the characters and does utf8 syntax checking */
		ret = traverse_string(in, len, MBSTRING_UTF8, in_utf8, &nchar);
		if (ret < 0) {
			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
			    ASN1_R_INVALID_UTF8STRING);
			return -1;
		}
		break;

	case MBSTRING_ASC:
		nchar = len;
		break;

	default:
		ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_UNKNOWN_FORMAT);
		return -1;
	}

	if ((minsize > 0) && (nchar < minsize)) {
		ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_STRING_TOO_SHORT);
		ERR_asprintf_error_data("minsize=%ld", minsize);
		return -1;
	}

	if ((maxsize > 0) && (nchar > maxsize)) {
		ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_STRING_TOO_LONG);
		ERR_asprintf_error_data("maxsize=%ld", maxsize);
		return -1;
	}

	/* Now work out minimal type (if any) */
	if (traverse_string(in, len, inform, type_str, &mask) < 0) {
		ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_ILLEGAL_CHARACTERS);
		return -1;
	}


	/* Now work out output format and string type */
	outform = MBSTRING_ASC;
	if (mask & B_ASN1_PRINTABLESTRING)
		str_type = V_ASN1_PRINTABLESTRING;
	else if (mask & B_ASN1_IA5STRING)
		str_type = V_ASN1_IA5STRING;
	else if (mask & B_ASN1_T61STRING)
		str_type = V_ASN1_T61STRING;
	else if (mask & B_ASN1_BMPSTRING) {
		str_type = V_ASN1_BMPSTRING;
		outform = MBSTRING_BMP;
	} else if (mask & B_ASN1_UNIVERSALSTRING) {
		str_type = V_ASN1_UNIVERSALSTRING;
		outform = MBSTRING_UNIV;
	} else {
		str_type = V_ASN1_UTF8STRING;
		outform = MBSTRING_UTF8;
	}
	if (!out)
		return str_type;
	if (*out) {
		free_out = 0;
		dest = *out;
		if (dest->data) {
			dest->length = 0;
			free(dest->data);
			dest->data = NULL;
		}
		dest->type = str_type;
	} else {
		free_out = 1;
		dest = ASN1_STRING_type_new(str_type);
		if (!dest) {
			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
			    ERR_R_MALLOC_FAILURE);
			return -1;
		}
		*out = dest;
	}
	/* If both the same type just copy across */
	if (inform == outform) {
		if (!ASN1_STRING_set(dest, in, len)) {
			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
			    ERR_R_MALLOC_FAILURE);
			goto err;
		}
		return str_type;
	}

	/* Work out how much space the destination will need */
	switch (outform) {
	case MBSTRING_ASC:
		outlen = nchar;
		cpyfunc = cpy_asc;
		break;

	case MBSTRING_BMP:
		outlen = nchar << 1;
		cpyfunc = cpy_bmp;
		break;

	case MBSTRING_UNIV:
		outlen = nchar << 2;
		cpyfunc = cpy_univ;
		break;

	case MBSTRING_UTF8:
		outlen = 0;
		if (traverse_string(in, len, inform, out_utf8, &outlen) < 0) {
			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
			    ASN1_R_ILLEGAL_CHARACTERS);
			goto err;
		}
		cpyfunc = cpy_utf8;
		break;
	}
	if (!(p = malloc(outlen + 1))) {
		ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ERR_R_MALLOC_FAILURE);
		goto err;
	}
	dest->length = outlen;
	dest->data = p;
	p[outlen] = 0;
	traverse_string(in, len, inform, cpyfunc, &p);
	return str_type;

err:
	if (free_out) {
		ASN1_STRING_free(dest);
		*out = NULL;
	}
	return -1;
}

/* This function traverses a string and passes the value of each character
 * to an optional function along with a void * argument.
 */

static int
traverse_string(const unsigned char *p, int len, int inform,
    int (*rfunc)(unsigned long value, void *in), void *arg)
{
	unsigned long value;
	int ret;

	while (len) {
		switch (inform) {
		case MBSTRING_ASC:
			value = *p++;
			len--;
			break;
		case MBSTRING_BMP:
			value = *p++ << 8;
			value |= *p++;
			/* BMP is explictly defined to not support surrogates */
			if (UNICODE_IS_SURROGATE(value))
				return -1;
			len -= 2;
			break;
		case MBSTRING_UNIV:
			value = (unsigned long)*p++ << 24;
			value |= *p++ << 16;
			value |= *p++ << 8;
			value |= *p++;
			if (value > UNICODE_MAX || UNICODE_IS_SURROGATE(value))
				return -1;
			len -= 4;
			break;
		default:
			ret = UTF8_getc(p, len, &value);
			if (ret < 0)
				return -1;
			len -= ret;
			p += ret;
			break;
		}
		if (rfunc) {
			ret = rfunc(value, arg);
			if (ret <= 0)
				return ret;
		}
	}
	return 1;
}

/* Various utility functions for traverse_string */

/* Just count number of characters */

static int
in_utf8(unsigned long value, void *arg)
{
	int *nchar;

	nchar = arg;
	(*nchar)++;
	return 1;
}

/* Determine size of output as a UTF8 String */

static int
out_utf8(unsigned long value, void *arg)
{
	int *outlen;
	int ret;

	outlen = arg;
	ret = UTF8_putc(NULL, -1, value);
	if (ret < 0)
		return ret;
	*outlen += ret;
	return 1;
}

/* Determine the "type" of a string: check each character against a
 * supplied "mask".
 */

static int
type_str(unsigned long value, void *arg)
{
	unsigned long types;

	types = *((unsigned long *)arg);
	if ((types & B_ASN1_PRINTABLESTRING) && !is_printable(value))
		types &= ~B_ASN1_PRINTABLESTRING;
	if ((types & B_ASN1_IA5STRING) && (value > 127))
		types &= ~B_ASN1_IA5STRING;
	if ((types & B_ASN1_T61STRING) && (value > 0xff))
		types &= ~B_ASN1_T61STRING;
	if ((types & B_ASN1_BMPSTRING) && (value > 0xffff))
		types &= ~B_ASN1_BMPSTRING;
	if (!types)
		return -1;
	*((unsigned long *)arg) = types;
	return 1;
}

/* Copy one byte per character ASCII like strings */

static int
cpy_asc(unsigned long value, void *arg)
{
	unsigned char **p, *q;

	p = arg;
	q = *p;
	*q = value;
	(*p)++;
	return 1;
}

/* Copy two byte per character BMPStrings */

static int
cpy_bmp(unsigned long value, void *arg)
{
	unsigned char **p, *q;

	p = arg;
	q = *p;
	*q++ = (value >> 8) & 0xff;
	*q = value & 0xff;
	*p += 2;
	return 1;
}

/* Copy four byte per character UniversalStrings */

static int
cpy_univ(unsigned long value, void *arg)
{
	unsigned char **p, *q;

	p = arg;
	q = *p;
	*q++ = (value >> 24) & 0xff;
	*q++ = (value >> 16) & 0xff;
	*q++ = (value >> 8) & 0xff;
	*q = value & 0xff;
	*p += 4;
	return 1;
}

/* Copy to a UTF8String */

static int
cpy_utf8(unsigned long value, void *arg)
{
	unsigned char **p;

	int ret;
	p = arg;
	/* We already know there is enough room so pass 0xff as the length */
	ret = UTF8_putc(*p, 0xff, value);
	*p += ret;
	return 1;
}

/* Return 1 if the character is permitted in a PrintableString */
static int
is_printable(unsigned long value)
{
	int ch;

	if (value > 0x7f)
		return 0;
	ch = (int)value;

	/* Note: we can't use 'isalnum' because certain accented
	 * characters may count as alphanumeric in some environments.
	 */
	if ((ch >= 'a') && (ch <= 'z'))
		return 1;
	if ((ch >= 'A') && (ch <= 'Z'))
		return 1;
	if ((ch >= '0') && (ch <= '9'))
		return 1;
	if ((ch == ' ') || strchr("'()+,-./:=?", ch))
		return 1;
	return 0;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: a_mbstr.c,v 1.22 2015/07/16 02:18:58 miod Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project 1999.
4			*/
5			/* ====================================================================
6			* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			*
12			* 1. Redistributions of source code must retain the above copyright
13			* notice, this list of conditions and the following disclaimer.
14			*
15			* 2. Redistributions in binary form must reproduce the above copyright
16			* notice, this list of conditions and the following disclaimer in
17			* the documentation and/or other materials provided with the
18			* distribution.
19			*
20			* 3. All advertising materials mentioning features or use of this
21			* software must display the following acknowledgment:
22			* "This product includes software developed by the OpenSSL Project
23			* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24			*
25			* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26			* endorse or promote products derived from this software without
27			* prior written permission. For written permission, please contact
28			* licensing@OpenSSL.org.
29			*
30			* 5. Products derived from this software may not be called "OpenSSL"
31			* nor may "OpenSSL" appear in their names without prior written
32			* permission of the OpenSSL Project.
33			*
34			* 6. Redistributions of any form whatsoever must retain the following
35			* acknowledgment:
36			* "This product includes software developed by the OpenSSL Project
37			* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38			*
39			* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40			* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46			* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48			* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50			* OF THE POSSIBILITY OF SUCH DAMAGE.
51			* ====================================================================
52			*
53			* This product includes cryptographic software written by Eric Young
54			* (eay@cryptsoft.com). This product includes software written by Tim
55			* Hudson (tjh@cryptsoft.com).
56			*
57			*/
58
59			#include <ctype.h>
60			#include <stdio.h>
61			#include <string.h>
62
63			#include <openssl/asn1.h>
64			#include <openssl/err.h>
65
66			#include "asn1_locl.h"
67
68			static int traverse_string(const unsigned char *p, int len, int inform,
69			int (rfunc)(unsigned long value, void in), void *arg);
70			static int in_utf8(unsigned long value, void *arg);
71			static int out_utf8(unsigned long value, void *arg);
72			static int type_str(unsigned long value, void *arg);
73			static int cpy_asc(unsigned long value, void *arg);
74			static int cpy_bmp(unsigned long value, void *arg);
75			static int cpy_univ(unsigned long value, void *arg);
76			static int cpy_utf8(unsigned long value, void *arg);
77			static int is_printable(unsigned long value);
78
79			/* These functions take a string in UTF8, ASCII or multibyte form and
80			* a mask of permissible ASN1 string types. It then works out the minimal
81			* type (using the order Printable < IA5 < T61 < BMP < Universal < UTF8)
82			* and creates a string of the correct type with the supplied data.
83			* Yes this is horrible: it has to be :-(
84			* The 'ncopy' form checks minimum and maximum size limits too.
85			*/
86
87			int
88			ASN1_mbstring_copy(ASN1_STRING *out, const unsigned char in, int len,
89			int inform, unsigned long mask)
90		1352	{
91		1352	return ASN1_mbstring_ncopy(out, in, len, inform, mask, 0, 0);
92			}
93
94			int
95			ASN1_mbstring_ncopy(ASN1_STRING *out, const unsigned char in, int len,
96			int inform, unsigned long mask, long minsize, long maxsize)
97		1352	{
98			int str_type;
99			int ret;
100			char free_out;
101		1352	int outform, outlen = 0;
102			ASN1_STRING *dest;
103			unsigned char *p;
104			int nchar;
105		1352	int (cpyfunc)(unsigned long, void ) = NULL;
106
107	✗✓	1352	if (len < 0)
108			len = strlen((const char *)in);
109	✗✓	1352	if (!mask)
110			mask = DIRSTRING_TYPE;
111
112			/* First do a string check and work out the number of characters */
113	✗✗✓✓ ✗	1352	switch (inform) {
114			case MBSTRING_BMP:
115			if (len & 1) {
116			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
117			ASN1_R_INVALID_BMPSTRING_LENGTH);
118			return -1;
119			}
120			nchar = len >> 1;
121			break;
122
123			case MBSTRING_UNIV:
124			if (len & 3) {
125			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
126			ASN1_R_INVALID_UNIVERSALSTRING_LENGTH);
127			return -1;
128			}
129			nchar = len >> 2;
130			break;
131
132			case MBSTRING_UTF8:
133		134	nchar = 0;
134			/* This counts the characters and does utf8 syntax checking */
135		134	ret = traverse_string(in, len, MBSTRING_UTF8, in_utf8, &nchar);
136	✗✓	134	if (ret < 0) {
137			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
138			ASN1_R_INVALID_UTF8STRING);
139			return -1;
140			}
141			break;
142
143			case MBSTRING_ASC:
144		1218	nchar = len;
145		1218	break;
146
147			default:
148			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_UNKNOWN_FORMAT);
149			return -1;
150			}
151
152	✗✓✗✗	1352	if ((minsize > 0) && (nchar < minsize)) {
153			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_STRING_TOO_SHORT);
154			ERR_asprintf_error_data("minsize=%ld", minsize);
155			return -1;
156			}
157
158	✗✓✗✗	1352	if ((maxsize > 0) && (nchar > maxsize)) {
159			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_STRING_TOO_LONG);
160			ERR_asprintf_error_data("maxsize=%ld", maxsize);
161			return -1;
162			}
163
164			/* Now work out minimal type (if any) */
165	✗✓	1352	if (traverse_string(in, len, inform, type_str, &mask) < 0) {
166			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_ILLEGAL_CHARACTERS);
167			return -1;
168			}
169
170
171			/* Now work out output format and string type */
172		1352	outform = MBSTRING_ASC;
173	✗✓	1352	if (mask & B_ASN1_PRINTABLESTRING)
174			str_type = V_ASN1_PRINTABLESTRING;
175	✗✓	1352	else if (mask & B_ASN1_IA5STRING)
176			str_type = V_ASN1_IA5STRING;
177	✗✓	1352	else if (mask & B_ASN1_T61STRING)
178			str_type = V_ASN1_T61STRING;
179	✗✓	1352	else if (mask & B_ASN1_BMPSTRING) {
180			str_type = V_ASN1_BMPSTRING;
181			outform = MBSTRING_BMP;
182	✗✓	1352	} else if (mask & B_ASN1_UNIVERSALSTRING) {
183			str_type = V_ASN1_UNIVERSALSTRING;
184			outform = MBSTRING_UNIV;
185			} else {
186		1352	str_type = V_ASN1_UTF8STRING;
187		1352	outform = MBSTRING_UTF8;
188			}
189	✗✓	1352	if (!out)
190			return str_type;
191	✓✗	1352	if (*out) {
192		1352	free_out = 0;
193		1352	dest = *out;
194	✗✓	1352	if (dest->data) {
195			dest->length = 0;
196			free(dest->data);
197			dest->data = NULL;
198			}
199		1352	dest->type = str_type;
200			} else {
201			free_out = 1;
202			dest = ASN1_STRING_type_new(str_type);
203			if (!dest) {
204			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
205			ERR_R_MALLOC_FAILURE);
206			return -1;
207			}
208			*out = dest;
209			}
210			/* If both the same type just copy across */
211	✓✓	1352	if (inform == outform) {
212	✗✓	134	if (!ASN1_STRING_set(dest, in, len)) {
213			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
214			ERR_R_MALLOC_FAILURE);
215			goto err;
216			}
217		134	return str_type;
218			}
219
220			/* Work out how much space the destination will need */
221	✗✗✗✓ ✗	1218	switch (outform) {
222			case MBSTRING_ASC:
223			outlen = nchar;
224			cpyfunc = cpy_asc;
225			break;
226
227			case MBSTRING_BMP:
228			outlen = nchar << 1;
229			cpyfunc = cpy_bmp;
230			break;
231
232			case MBSTRING_UNIV:
233			outlen = nchar << 2;
234			cpyfunc = cpy_univ;
235			break;
236
237			case MBSTRING_UTF8:
238		1218	outlen = 0;
239	✗✓	1218	if (traverse_string(in, len, inform, out_utf8, &outlen) < 0) {
240			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
241			ASN1_R_ILLEGAL_CHARACTERS);
242			goto err;
243			}
244		1218	cpyfunc = cpy_utf8;
245			break;
246			}
247	✗✓	1218	if (!(p = malloc(outlen + 1))) {
248			ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ERR_R_MALLOC_FAILURE);
249			goto err;
250			}
251		1218	dest->length = outlen;
252		1218	dest->data = p;
253		1218	p[outlen] = 0;
254		1218	traverse_string(in, len, inform, cpyfunc, &p);
255		1218	return str_type;
256
257			err:
258			if (free_out) {
259			ASN1_STRING_free(dest);
260			*out = NULL;
261			}
262			return -1;
263			}
264
265			/* This function traverses a string and passes the value of each character
266			* to an optional function along with a void * argument.
267			*/
268
269			static int
270			traverse_string(const unsigned char *p, int len, int inform,
271			int (rfunc)(unsigned long value, void in), void *arg)
272		3922	{
273			unsigned long value;
274			int ret;
275
276	✓✓	79574	while (len) {
277	✓✗✗✓	71730	switch (inform) {
278			case MBSTRING_ASC:
279		66084	value = *p++;
280		66084	len--;
281		66084	break;
282			case MBSTRING_BMP:
283			value = *p++ << 8;
284			value \|= *p++;
285			/* BMP is explictly defined to not support surrogates */
286			if (UNICODE_IS_SURROGATE(value))
287			return -1;
288			len -= 2;
289			break;
290			case MBSTRING_UNIV:
291			value = (unsigned long)*p++ << 24;
292			value \|= *p++ << 16;
293			value \|= *p++ << 8;
294			value \|= *p++;
295			if (value > UNICODE_MAX \|\| UNICODE_IS_SURROGATE(value))
296			return -1;
297			len -= 4;
298			break;
299			default:
300		5646	ret = UTF8_getc(p, len, &value);
301	✗✓	5646	if (ret < 0)
302			return -1;
303		5646	len -= ret;
304		5646	p += ret;
305			break;
306			}
307	✓✗	71730	if (rfunc) {
308		71730	ret = rfunc(value, arg);
309	✗✓	71730	if (ret <= 0)
310			return ret;
311			}
312			}
313		3922	return 1;
314			}
315
316			/* Various utility functions for traverse_string */
317
318			/* Just count number of characters */
319
320			static int
321			in_utf8(unsigned long value, void *arg)
322		2823	{
323			int *nchar;
324
325		2823	nchar = arg;
326		2823	(*nchar)++;
327		2823	return 1;
328			}
329
330			/* Determine size of output as a UTF8 String */
331
332			static int
333			out_utf8(unsigned long value, void *arg)
334		22028	{
335			int *outlen;
336			int ret;
337
338		22028	outlen = arg;
339		22028	ret = UTF8_putc(NULL, -1, value);
340	✗✓	22028	if (ret < 0)
341			return ret;
342		22028	*outlen += ret;
343		22028	return 1;
344			}
345
346			/* Determine the "type" of a string: check each character against a
347			* supplied "mask".
348			*/
349
350			static int
351			type_str(unsigned long value, void *arg)
352		24851	{
353			unsigned long types;
354
355		24851	types = ((unsigned long )arg);
356	✗✓✗✗	24851	if ((types & B_ASN1_PRINTABLESTRING) && !is_printable(value))
357			types &= ~B_ASN1_PRINTABLESTRING;
358	✗✓	24851	if ((types & B_ASN1_IA5STRING) && (value > 127))
359			types &= ~B_ASN1_IA5STRING;
360	✗✓	24851	if ((types & B_ASN1_T61STRING) && (value > 0xff))
361			types &= ~B_ASN1_T61STRING;
362	✗✓	24851	if ((types & B_ASN1_BMPSTRING) && (value > 0xffff))
363			types &= ~B_ASN1_BMPSTRING;
364	✗✓	24851	if (!types)
365			return -1;
366		24851	((unsigned long )arg) = types;
367		24851	return 1;
368			}
369
370			/* Copy one byte per character ASCII like strings */
371
372			static int
373			cpy_asc(unsigned long value, void *arg)
374			{
375			unsigned char *p, q;
376
377			p = arg;
378			q = *p;
379			*q = value;
380			(*p)++;
381			return 1;
382			}
383
384			/* Copy two byte per character BMPStrings */
385
386			static int
387			cpy_bmp(unsigned long value, void *arg)
388			{
389			unsigned char *p, q;
390
391			p = arg;
392			q = *p;
393			*q++ = (value >> 8) & 0xff;
394			*q = value & 0xff;
395			*p += 2;
396			return 1;
397			}
398
399			/* Copy four byte per character UniversalStrings */
400
401			static int
402			cpy_univ(unsigned long value, void *arg)
403			{
404			unsigned char *p, q;
405
406			p = arg;
407			q = *p;
408			*q++ = (value >> 24) & 0xff;
409			*q++ = (value >> 16) & 0xff;
410			*q++ = (value >> 8) & 0xff;
411			*q = value & 0xff;
412			*p += 4;
413			return 1;
414			}
415
416			/* Copy to a UTF8String */
417
418			static int
419			cpy_utf8(unsigned long value, void *arg)
420		22028	{
421			unsigned char **p;
422
423			int ret;
424		22028	p = arg;
425			/* We already know there is enough room so pass 0xff as the length */
426		22028	ret = UTF8_putc(*p, 0xff, value);
427		22028	*p += ret;
428		22028	return 1;
429			}
430
431			/* Return 1 if the character is permitted in a PrintableString */
432			static int
433			is_printable(unsigned long value)
434			{
435			int ch;
436
437			if (value > 0x7f)
438			return 0;
439			ch = (int)value;
440
441			/* Note: we can't use 'isalnum' because certain accented
442			* characters may count as alphanumeric in some environments.
443			*/
444			if ((ch >= 'a') && (ch <= 'z'))
445			return 1;
446			if ((ch >= 'A') && (ch <= 'Z'))
447			return 1;
448			if ((ch >= '0') && (ch <= '9'))
449			return 1;
450			if ((ch == ' ') \|\| strchr("'()+,-./:=?", ch))
451			return 1;
452			return 0;
453			}