Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/asn1/a_mbstr.c	Lines:	96	184	52.2 %
Date:	2017-11-07	Branches:	51	102	50.0 %


/* $OpenBSD: a_mbstr.c,v 1.23 2017/01/29 17:49:22 beck 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) {
			ASN1error(ASN1_R_INVALID_BMPSTRING_LENGTH);
			return -1;
		}
		nchar = len >> 1;
		break;

	case MBSTRING_UNIV:
		if (len & 3) {
			ASN1error(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) {
			ASN1error(ASN1_R_INVALID_UTF8STRING);
			return -1;
		}
		break;

	case MBSTRING_ASC:
		nchar = len;
		break;

	default:
		ASN1error(ASN1_R_UNKNOWN_FORMAT);
		return -1;
	}

	if ((minsize > 0) && (nchar < minsize)) {
		ASN1error(ASN1_R_STRING_TOO_SHORT);
		ERR_asprintf_error_data("minsize=%ld", minsize);
		return -1;
	}

	if ((maxsize > 0) && (nchar > maxsize)) {
		ASN1error(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) {
		ASN1error(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) {
			ASN1error(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)) {
			ASN1error(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) {
			ASN1error(ASN1_R_ILLEGAL_CHARACTERS);
			goto err;
		}
		cpyfunc = cpy_utf8;
		break;
	}
	if (!(p = malloc(outlen + 1))) {
		ASN1error(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 1.23 2017/01/29 17:49:22 beck 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			{
91		244440	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			{
98			int str_type;
99			int ret;
100			char free_out;
101		122474	int outform, outlen = 0;
102			ASN1_STRING *dest;
103		122474	unsigned char *p;
104		122474	int nchar;
105			int (cpyfunc)(unsigned long, void ) = NULL;
106
107	✓✓	122474	if (len < 0)
108		248	len = strlen((const char *)in);
109	✗✓	122474	if (!mask)
110			mask = DIRSTRING_TYPE;
111
112			/* First do a string check and work out the number of characters */
113	✗✗✓✓ ✗	122474	switch (inform) {
114			case MBSTRING_BMP:
115			if (len & 1) {
116			ASN1error(ASN1_R_INVALID_BMPSTRING_LENGTH);
117			return -1;
118			}
119			nchar = len >> 1;
120			break;
121
122			case MBSTRING_UNIV:
123			if (len & 3) {
124			ASN1error(ASN1_R_INVALID_UNIVERSALSTRING_LENGTH);
125			return -1;
126			}
127			nchar = len >> 2;
128			break;
129
130			case MBSTRING_UTF8:
131		27432	nchar = 0;
132			/* This counts the characters and does utf8 syntax checking */
133		27432	ret = traverse_string(in, len, MBSTRING_UTF8, in_utf8, &nchar);
134	✗✓	27432	if (ret < 0) {
135			ASN1error(ASN1_R_INVALID_UTF8STRING);
136			return -1;
137			}
138			break;
139
140			case MBSTRING_ASC:
141		95042	nchar = len;
142		95042	break;
143
144			default:
145			ASN1error(ASN1_R_UNKNOWN_FORMAT);
146			return -1;
147			}
148
149	✓✓✗✓	122726	if ((minsize > 0) && (nchar < minsize)) {
150			ASN1error(ASN1_R_STRING_TOO_SHORT);
151			ERR_asprintf_error_data("minsize=%ld", minsize);
152			return -1;
153			}
154
155	✓✓✗✓	122726	if ((maxsize > 0) && (nchar > maxsize)) {
156			ASN1error(ASN1_R_STRING_TOO_LONG);
157			ERR_asprintf_error_data("maxsize=%ld", maxsize);
158			return -1;
159			}
160
161			/* Now work out minimal type (if any) */
162	✗✓	122474	if (traverse_string(in, len, inform, type_str, &mask) < 0) {
163			ASN1error(ASN1_R_ILLEGAL_CHARACTERS);
164			return -1;
165			}
166
167
168			/* Now work out output format and string type */
169			outform = MBSTRING_ASC;
170	✓✓	122474	if (mask & B_ASN1_PRINTABLESTRING)
171		18	str_type = V_ASN1_PRINTABLESTRING;
172	✗✓	122456	else if (mask & B_ASN1_IA5STRING)
173			str_type = V_ASN1_IA5STRING;
174	✗✓	122456	else if (mask & B_ASN1_T61STRING)
175			str_type = V_ASN1_T61STRING;
176	✓✓	122456	else if (mask & B_ASN1_BMPSTRING) {
177			str_type = V_ASN1_BMPSTRING;
178			outform = MBSTRING_BMP;
179	✗✓	122456	} else if (mask & B_ASN1_UNIVERSALSTRING) {
180			str_type = V_ASN1_UNIVERSALSTRING;
181			outform = MBSTRING_UNIV;
182			} else {
183			str_type = V_ASN1_UTF8STRING;
184			outform = MBSTRING_UTF8;
185			}
186	✗✓	122474	if (!out)
187			return str_type;
188	✓✓	122474	if (*out) {
189			free_out = 0;
190			dest = *out;
191	✗✓	122472	if (dest->data) {
192			dest->length = 0;
193			free(dest->data);
194			dest->data = NULL;
195			}
196		122472	dest->type = str_type;
197		122472	} else {
198			free_out = 1;
199		2	dest = ASN1_STRING_type_new(str_type);
200	✗✓	2	if (!dest) {
201			ASN1error(ERR_R_MALLOC_FAILURE);
202			return -1;
203			}
204		2	*out = dest;
205			}
206			/* If both the same type just copy across */
207	✓✓	122474	if (inform == outform) {
208	✗✓	27450	if (!ASN1_STRING_set(dest, in, len)) {
209			ASN1error(ERR_R_MALLOC_FAILURE);
210			goto err;
211			}
212		27450	return str_type;
213			}
214
215			/* Work out how much space the destination will need */
216	✗✓✗✓ ✓	190048	switch (outform) {
217			case MBSTRING_ASC:
218			outlen = nchar;
219			cpyfunc = cpy_asc;
220			break;
221
222			case MBSTRING_BMP:
223		2	outlen = nchar << 1;
224			cpyfunc = cpy_bmp;
225		2	break;
226
227			case MBSTRING_UNIV:
228			outlen = nchar << 2;
229			cpyfunc = cpy_univ;
230			break;
231
232			case MBSTRING_UTF8:
233		95022	outlen = 0;
234	✗✓	95022	if (traverse_string(in, len, inform, out_utf8, &outlen) < 0) {
235			ASN1error(ASN1_R_ILLEGAL_CHARACTERS);
236			goto err;
237			}
238			cpyfunc = cpy_utf8;
239		95022	break;
240			}
241	✗✓	95024	if (!(p = malloc(outlen + 1))) {
242			ASN1error(ERR_R_MALLOC_FAILURE);
243			goto err;
244			}
245		95024	dest->length = outlen;
246		95024	dest->data = p;
247		95024	p[outlen] = 0;
248		95024	traverse_string(in, len, inform, cpyfunc, &p);
249		95024	return str_type;
250
251			err:
252			if (free_out) {
253			ASN1_STRING_free(dest);
254			*out = NULL;
255			}
256			return -1;
257		122474	}
258
259			/* This function traverses a string and passes the value of each character
260			* to an optional function along with a void * argument.
261			*/
262
263			static int
264			traverse_string(const unsigned char *p, int len, int inform,
265			int (rfunc)(unsigned long value, void in), void *arg)
266			{
267		679904	unsigned long value;
268			int ret;
269
270	✓✓	6349918	while (len) {
271	✓✗✗✓	5670014	switch (inform) {
272			case MBSTRING_ASC:
273		4729684	value = *p++;
274		4729684	len--;
275		4729684	break;
276			case MBSTRING_BMP:
277			value = *p++ << 8;
278			value \|= *p++;
279			/* BMP is explictly defined to not support surrogates */
280			if (UNICODE_IS_SURROGATE(value))
281			return -1;
282			len -= 2;
283			break;
284			case MBSTRING_UNIV:
285			value = (unsigned long)*p++ << 24;
286			value \|= *p++ << 16;
287			value \|= *p++ << 8;
288			value \|= *p++;
289			if (value > UNICODE_MAX \|\| UNICODE_IS_SURROGATE(value))
290			return -1;
291			len -= 4;
292			break;
293			default:
294		940330	ret = UTF8_getc(p, len, &value);
295	✗✓	940330	if (ret < 0)
296			return -1;
297		940330	len -= ret;
298		940330	p += ret;
299		940330	break;
300			}
301	✗✓	5670014	if (rfunc) {
302		5670014	ret = rfunc(value, arg);
303	✓✗	5670014	if (ret <= 0)
304			return ret;
305			}
306			}
307		339952	return 1;
308		339952	}
309
310			/* Various utility functions for traverse_string */
311
312			/* Just count number of characters */
313
314			static int
315			in_utf8(unsigned long value, void *arg)
316			{
317			int *nchar;
318
319		940330	nchar = arg;
320		470165	(*nchar)++;
321		470165	return 1;
322			}
323
324			/* Determine size of output as a UTF8 String */
325
326			static int
327			out_utf8(unsigned long value, void *arg)
328			{
329			int *outlen;
330			int ret;
331
332		3153072	outlen = arg;
333		1576536	ret = UTF8_putc(NULL, -1, value);
334	✗✓	1576536	if (ret < 0)
335			return ret;
336		1576536	*outlen += ret;
337		1576536	return 1;
338		1576536	}
339
340			/* Determine the "type" of a string: check each character against a
341			* supplied "mask".
342			*/
343
344			static int
345			type_str(unsigned long value, void *arg)
346			{
347			unsigned long types;
348
349		4093514	types = ((unsigned long )arg);
350	✓✓✗✓	2046793	if ((types & B_ASN1_PRINTABLESTRING) && !is_printable(value))
351			types &= ~B_ASN1_PRINTABLESTRING;
352	✗✓	2046757	if ((types & B_ASN1_IA5STRING) && (value > 127))
353			types &= ~B_ASN1_IA5STRING;
354	✗✓	2046757	if ((types & B_ASN1_T61STRING) && (value > 0xff))
355			types &= ~B_ASN1_T61STRING;
356	✗✓	2046757	if ((types & B_ASN1_BMPSTRING) && (value > 0xffff))
357			types &= ~B_ASN1_BMPSTRING;
358	✗✓	2046757	if (!types)
359			return -1;
360		2046757	((unsigned long )arg) = types;
361		2046757	return 1;
362		2046757	}
363
364			/* Copy one byte per character ASCII like strings */
365
366			static int
367			cpy_asc(unsigned long value, void *arg)
368			{
369			unsigned char *p, q;
370
371			p = arg;
372			q = *p;
373			*q = value;
374			(*p)++;
375			return 1;
376			}
377
378			/* Copy two byte per character BMPStrings */
379
380			static int
381			cpy_bmp(unsigned long value, void *arg)
382			{
383			unsigned char *p, q;
384
385		40	p = arg;
386		20	q = *p;
387		20	*q++ = (value >> 8) & 0xff;
388		20	*q = value & 0xff;
389		20	*p += 2;
390		20	return 1;
391			}
392
393			/* Copy four byte per character UniversalStrings */
394
395			static int
396			cpy_univ(unsigned long value, void *arg)
397			{
398			unsigned char *p, q;
399
400			p = arg;
401			q = *p;
402			*q++ = (value >> 24) & 0xff;
403			*q++ = (value >> 16) & 0xff;
404			*q++ = (value >> 8) & 0xff;
405			*q = value & 0xff;
406			*p += 4;
407			return 1;
408			}
409
410			/* Copy to a UTF8String */
411
412			static int
413			cpy_utf8(unsigned long value, void *arg)
414			{
415			unsigned char **p;
416
417			int ret;
418		3153072	p = arg;
419			/* We already know there is enough room so pass 0xff as the length */
420		1576536	ret = UTF8_putc(*p, 0xff, value);
421		1576536	*p += ret;
422		1576536	return 1;
423			}
424
425			/* Return 1 if the character is permitted in a PrintableString */
426			static int
427			is_printable(unsigned long value)
428			{
429			int ch;
430
431	✗✓	72	if (value > 0x7f)
432			return 0;
433		36	ch = (int)value;
434
435			/* Note: we can't use 'isalnum' because certain accented
436			* characters may count as alphanumeric in some environments.
437			*/
438	✗✓	36	if ((ch >= 'a') && (ch <= 'z'))
439			return 1;
440	✓✗	36	if ((ch >= 'A') && (ch <= 'Z'))
441		36	return 1;
442			if ((ch >= '0') && (ch <= '9'))
443			return 1;
444			if ((ch == ' ') \|\| strchr("'()+,-./:=?", ch))
445			return 1;
446			return 0;
447		36	}