/src/openssl30/crypto/asn1/asn1_lib.c

Source (jump to first uncovered line)
/*
 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include <limits.h>
#include "internal/cryptlib.h"
#include <openssl/asn1.h>
#include "asn1_local.h"

static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
                           long max);
static void asn1_put_length(unsigned char **pp, int length);

static int _asn1_check_infinite_end(const unsigned char **p, long len)
{
    /*
     * If there is 0 or 1 byte left, the length check should pick things up
     */
    if (len <= 0) {
        return 1;
    } else {
        if ((len >= 2) && ((*p)[0] == 0) && ((*p)[1] == 0)) {
            (*p) += 2;
            return 1;
        }
    }
    return 0;
}

int ASN1_check_infinite_end(unsigned char **p, long len)
{
    return _asn1_check_infinite_end((const unsigned char **)p, len);
}

int ASN1_const_check_infinite_end(const unsigned char **p, long len)
{
    return _asn1_check_infinite_end(p, len);
}

int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag,
                    int *pclass, long omax)
{
    int i, ret;
    long len;
    const unsigned char *p = *pp;
    int tag, xclass, inf;
    long max = omax;

    if (omax <= 0) {
        ERR_raise(ERR_LIB_ASN1, ASN1_R_TOO_SMALL);
        return 0x80;
    }
    ret = (*p & V_ASN1_CONSTRUCTED);
    xclass = (*p & V_ASN1_PRIVATE);
    i = *p & V_ASN1_PRIMITIVE_TAG;
    if (i == V_ASN1_PRIMITIVE_TAG) { /* high-tag */
        p++;
        if (--max == 0)
            goto err;
        len = 0;
        while (*p & 0x80) {
            len <<= 7L;
            len |= *(p++) & 0x7f;
            if (--max == 0)
                goto err;
            if (len > (INT_MAX >> 7L))
                goto err;
        }
        len <<= 7L;
        len |= *(p++) & 0x7f;
        tag = (int)len;
        if (--max == 0)
            goto err;
    } else {
        tag = i;
        p++;
        if (--max == 0)
            goto err;
    }
    *ptag = tag;
    *pclass = xclass;
    if (!asn1_get_length(&p, &inf, plength, max))
        goto err;

    if (inf && !(ret & V_ASN1_CONSTRUCTED))
        goto err;

    if (*plength > (omax - (p - *pp))) {
        ERR_raise(ERR_LIB_ASN1, ASN1_R_TOO_LONG);
        /*
         * Set this so that even if things are not long enough the values are
         * set correctly
         */
        ret |= 0x80;
    }
    *pp = p;
    return ret | inf;
 err:
    ERR_raise(ERR_LIB_ASN1, ASN1_R_HEADER_TOO_LONG);
    return 0x80;
}

/*
 * Decode a length field.
 * The short form is a single byte defining a length 0 - 127.
 * The long form is a byte 0 - 127 with the top bit set and this indicates
 * the number of following octets that contain the length.  These octets
 * are stored most significant digit first.
 */
static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
                           long max)
{
    const unsigned char *p = *pp;
    unsigned long ret = 0;
    int i;

    if (max-- < 1)
        return 0;
    if (*p == 0x80) {
        *inf = 1;
        p++;
    } else {
        *inf = 0;
        i = *p & 0x7f;
        if (*p++ & 0x80) {
            if (max < i + 1)
                return 0;
            /* Skip leading zeroes */
            while (i > 0 && *p == 0) {
                p++;
                i--;
            }
            if (i > (int)sizeof(long))
                return 0;
            while (i > 0) {
                ret <<= 8;
                ret |= *p++;
                i--;
            }
            if (ret > LONG_MAX)
                return 0;
        } else {
            ret = i;
        }
    }
    *pp = p;
    *rl = (long)ret;
    return 1;
}

/*
 * constructed == 2 for indefinite length constructed
 */
void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag,
                     int xclass)
{
    unsigned char *p = *pp;
    int i, ttag;

    i = (constructed) ? V_ASN1_CONSTRUCTED : 0;
    i |= (xclass & V_ASN1_PRIVATE);
    if (tag < 31) {
        *(p++) = i | (tag & V_ASN1_PRIMITIVE_TAG);
    } else {
        *(p++) = i | V_ASN1_PRIMITIVE_TAG;
        for (i = 0, ttag = tag; ttag > 0; i++)
            ttag >>= 7;
        ttag = i;
        while (i-- > 0) {
            p[i] = tag & 0x7f;
            if (i != (ttag - 1))
                p[i] |= 0x80;
            tag >>= 7;
        }
        p += ttag;
    }
    if (constructed == 2)
        *(p++) = 0x80;
    else
        asn1_put_length(&p, length);
    *pp = p;
}

int ASN1_put_eoc(unsigned char **pp)
{
    unsigned char *p = *pp;

    *p++ = 0;
    *p++ = 0;
    *pp = p;
    return 2;
}

static void asn1_put_length(unsigned char **pp, int length)
{
    unsigned char *p = *pp;
    int i, len;

    if (length <= 127) {
        *(p++) = (unsigned char)length;
    } else {
        len = length;
        for (i = 0; len > 0; i++)
            len >>= 8;
        *(p++) = i | 0x80;
        len = i;
        while (i-- > 0) {
            p[i] = length & 0xff;
            length >>= 8;
        }
        p += len;
    }
    *pp = p;
}

int ASN1_object_size(int constructed, int length, int tag)
{
    int ret = 1;

    if (length < 0)
        return -1;
    if (tag >= 31) {
        while (tag > 0) {
            tag >>= 7;
            ret++;
        }
    }
    if (constructed == 2) {
        ret += 3;
    } else {
        ret++;
        if (length > 127) {
            int tmplen = length;
            while (tmplen > 0) {
                tmplen >>= 8;
                ret++;
            }
        }
    }
    if (ret >= INT_MAX - length)
        return -1;
    return ret + length;
}

int ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str)
{
    if (str == NULL)
        return 0;
    dst->type = str->type;
    if (!ASN1_STRING_set(dst, str->data, str->length))
        return 0;
    /* Copy flags but preserve embed value */
    dst->flags &= ASN1_STRING_FLAG_EMBED;
    dst->flags |= str->flags & ~ASN1_STRING_FLAG_EMBED;
    return 1;
}

ASN1_STRING *ASN1_STRING_dup(const ASN1_STRING *str)
{
    ASN1_STRING *ret;

    if (!str)
        return NULL;
    ret = ASN1_STRING_new();
    if (ret == NULL)
        return NULL;
    if (!ASN1_STRING_copy(ret, str)) {
        ASN1_STRING_free(ret);
        return NULL;
    }
    return ret;
}

int ASN1_STRING_set(ASN1_STRING *str, const void *_data, int len_in)
{
    unsigned char *c;
    const char *data = _data;
    size_t len;

    if (len_in < 0) {
        if (data == NULL)
            return 0;
        len = strlen(data);
    } else {
        len = (size_t)len_in;
    }
    /*
     * Verify that the length fits within an integer for assignment to
     * str->length below.  The additional 1 is subtracted to allow for the
     * '\0' terminator even though this isn't strictly necessary.
     */
    if (len > INT_MAX - 1) {
        ERR_raise(ERR_LIB_ASN1, ASN1_R_TOO_LARGE);
        return 0;
    }
    if ((size_t)str->length <= len || str->data == NULL) {
        c = str->data;
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
        /* No NUL terminator in fuzzing builds */
        str->data = OPENSSL_realloc(c, len != 0 ? len : 1);
#else
        str->data = OPENSSL_realloc(c, len + 1);
#endif
        if (str->data == NULL) {
            ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
            str->data = c;
            return 0;
        }
    }
    str->length = len;
    if (data != NULL) {
        memcpy(str->data, data, len);
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
        /* Set the unused byte to something non NUL and printable. */
        if (len == 0)
            str->data[len] = '~';
#else
        /*
         * Add a NUL terminator. This should not be necessary - but we add it as
         * a safety precaution
         */
        str->data[len] = '\0';
#endif
    }
    return 1;
}

void ASN1_STRING_set0(ASN1_STRING *str, void *data, int len)
{
    OPENSSL_free(str->data);
    str->data = data;
    str->length = len;
}

ASN1_STRING *ASN1_STRING_new(void)
{
    return ASN1_STRING_type_new(V_ASN1_OCTET_STRING);
}

ASN1_STRING *ASN1_STRING_type_new(int type)
{
    ASN1_STRING *ret;

    ret = OPENSSL_zalloc(sizeof(*ret));
    if (ret == NULL) {
        ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
        return NULL;
    }
    ret->type = type;
    return ret;
}

void ossl_asn1_string_embed_free(ASN1_STRING *a, int embed)
{
    if (a == NULL)
        return;
    if (!(a->flags & ASN1_STRING_FLAG_NDEF))
        OPENSSL_free(a->data);
    if (embed == 0)
        OPENSSL_free(a);
}

void ASN1_STRING_free(ASN1_STRING *a)
{
    if (a == NULL)
        return;
    ossl_asn1_string_embed_free(a, a->flags & ASN1_STRING_FLAG_EMBED);
}

void ASN1_STRING_clear_free(ASN1_STRING *a)
{
    if (a == NULL)
        return;
    if (a->data && !(a->flags & ASN1_STRING_FLAG_NDEF))
        OPENSSL_cleanse(a->data, a->length);
    ASN1_STRING_free(a);
}

int ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
{
    int i;

    i = (a->length - b->length);
    if (i == 0) {
        if (a->length != 0)
            i = memcmp(a->data, b->data, a->length);
        if (i == 0)
            return a->type - b->type;
        else
            return i;
    } else {
        return i;
    }
}

int ASN1_STRING_length(const ASN1_STRING *x)
{
    return x->length;
}

#ifndef OPENSSL_NO_DEPRECATED_3_0
void ASN1_STRING_length_set(ASN1_STRING *x, int len)
{
    x->length = len;
}
#endif

int ASN1_STRING_type(const ASN1_STRING *x)
{
    return x->type;
}

const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *x)
{
    return x->data;
}

#ifndef OPENSSL_NO_DEPRECATED_1_1_0
unsigned char *ASN1_STRING_data(ASN1_STRING *x)
{
    return x->data;
}
#endif

/* |max_len| excludes NUL terminator and may be 0 to indicate no restriction */
char *ossl_sk_ASN1_UTF8STRING2text(STACK_OF(ASN1_UTF8STRING) *text,
                                   const char *sep, size_t max_len)
{
    int i;
    ASN1_UTF8STRING *current;
    size_t length = 0, sep_len;
    char *result = NULL;
    char *p;

    if (sep == NULL)
        sep = "";
    sep_len = strlen(sep);

    for (i = 0; i < sk_ASN1_UTF8STRING_num(text); i++) {
        current = sk_ASN1_UTF8STRING_value(text, i);
        if (i > 0)
            length += sep_len;
        length += ASN1_STRING_length(current);
        if (max_len != 0 && length > max_len)
            return NULL;
    }
    if ((result = OPENSSL_malloc(length + 1)) == NULL)
        return NULL;

    p = result;
    for (i = 0; i < sk_ASN1_UTF8STRING_num(text); i++) {
        current = sk_ASN1_UTF8STRING_value(text, i);
        length = ASN1_STRING_length(current);
        if (i > 0 && sep_len > 0) {
            strncpy(p, sep, sep_len + 1); /* using + 1 to silence gcc warning */
            p += sep_len;
        }
        strncpy(p, (const char *)ASN1_STRING_get0_data(current), length);
        p += length;
    }
    *p = '\0';

    return result;
}

Coverage Report

Created: 2023-09-25 06:41

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
3		*
4		* Licensed under the Apache License 2.0 (the "License"). You may not use
5		* this file except in compliance with the License. You can obtain a copy
6		* in the file LICENSE in the source distribution or at
7		* https://www.openssl.org/source/license.html
8		*/
9
10		#include <stdio.h>
11		#include <limits.h>
12		#include "internal/cryptlib.h"
13		#include <openssl/asn1.h>
14		#include "asn1_local.h"
15
16		static int asn1_get_length(const unsigned char *pp, int inf, long *rl,
17		long max);
18		static void asn1_put_length(unsigned char **pp, int length);
19
20		static int _asn1_check_infinite_end(const unsigned char **p, long len)
21	0	{
22		/*
23		* If there is 0 or 1 byte left, the length check should pick things up
24		*/
25	0	if (len <= 0) {
26	0	return 1;
27	0	} else {
28	0	if ((len >= 2) && ((p)[0] == 0) && ((p)[1] == 0)) {
29	0	(*p) += 2;
30	0	return 1;
31	0	}
32	0	}
33	0	return 0;
34	0	}
35
36		int ASN1_check_infinite_end(unsigned char **p, long len)
37	0	{
38	0	return _asn1_check_infinite_end((const unsigned char **)p, len);
39	0	}
40
41		int ASN1_const_check_infinite_end(const unsigned char **p, long len)
42	0	{
43	0	return _asn1_check_infinite_end(p, len);
44	0	}
45
46		int ASN1_get_object(const unsigned char *pp, long plength, int *ptag,
47		int *pclass, long omax)
48	81.7k	{
49	81.7k	int i, ret;
50	81.7k	long len;
51	81.7k	const unsigned char p = pp;
52	81.7k	int tag, xclass, inf;
53	81.7k	long max = omax;
54
55	81.7k	if (omax <= 0) {
56	0	ERR_raise(ERR_LIB_ASN1, ASN1_R_TOO_SMALL);
57	0	return 0x80;
58	0	}
59	81.7k	ret = (*p & V_ASN1_CONSTRUCTED);
60	81.7k	xclass = (*p & V_ASN1_PRIVATE);
61	81.7k	i = *p & V_ASN1_PRIMITIVE_TAG;
62	81.7k	if (i == V_ASN1_PRIMITIVE_TAG) { /* high-tag */
63	2.05k	p++;
64	2.05k	if (--max == 0)
65	3	goto err;
66	2.05k	len = 0;
67	2.93k	while (*p & 0x80) {
68	906	len <<= 7L;
69	906	len \|= *(p++) & 0x7f;
70	906	if (--max == 0)
71	18	goto err;
72	888	if (len > (INT_MAX >> 7L))
73	5	goto err;
74	888	}
75	2.02k	len <<= 7L;
76	2.02k	len \|= *(p++) & 0x7f;
77	2.02k	tag = (int)len;
78	2.02k	if (--max == 0)
79	10	goto err;
80	79.6k	} else {
81	79.6k	tag = i;
82	79.6k	p++;
83	79.6k	if (--max == 0)
84	51	goto err;
85	79.6k	}
86	81.6k	*ptag = tag;
87	81.6k	*pclass = xclass;
88	81.6k	if (!asn1_get_length(&p, &inf, plength, max))
89	112	goto err;
90
91	81.5k	if (inf && !(ret & V_ASN1_CONSTRUCTED))
92	3	goto err;
93
94	81.5k	if (plength > (omax - (p - pp))) {
95	214	ERR_raise(ERR_LIB_ASN1, ASN1_R_TOO_LONG);
96		/*
97		* Set this so that even if things are not long enough the values are
98		* set correctly
99		*/
100	214	ret \|= 0x80;
101	214	}
102	81.5k	*pp = p;
103	81.5k	return ret \| inf;
104	202	err:
105	202	ERR_raise(ERR_LIB_ASN1, ASN1_R_HEADER_TOO_LONG);
106	202	return 0x80;
107	81.5k	}
108
109		/*
110		* Decode a length field.
111		* The short form is a single byte defining a length 0 - 127.
112		* The long form is a byte 0 - 127 with the top bit set and this indicates
113		* the number of following octets that contain the length. These octets
114		* are stored most significant digit first.
115		*/
116		static int asn1_get_length(const unsigned char *pp, int inf, long *rl,
117		long max)
118	81.6k	{
119	81.6k	const unsigned char p = pp;
120	81.6k	unsigned long ret = 0;
121	81.6k	int i;
122
123	81.6k	if (max-- < 1)
124	0	return 0;
125	81.6k	if (*p == 0x80) {
126	956	*inf = 1;
127	956	p++;
128	80.6k	} else {
129	80.6k	*inf = 0;
130	80.6k	i = *p & 0x7f;
131	80.6k	if (*p++ & 0x80) {
132	10.3k	if (max < i + 1)
133	18	return 0;
134		/* Skip leading zeroes */
135	11.8k	while (i > 0 && *p == 0) {
136	1.52k	p++;
137	1.52k	i--;
138	1.52k	}
139	10.3k	if (i > (int)sizeof(long))
140	28	return 0;
141	22.5k	while (i > 0) {
142	12.2k	ret <<= 8;
143	12.2k	ret \|= *p++;
144	12.2k	i--;
145	12.2k	}
146	10.2k	if (ret > LONG_MAX)
147	66	return 0;
148	70.3k	} else {
149	70.3k	ret = i;
150	70.3k	}
151	80.6k	}
152	81.5k	*pp = p;
153	81.5k	*rl = (long)ret;
154	81.5k	return 1;
155	81.6k	}
156
157		/*
158		* constructed == 2 for indefinite length constructed
159		*/
160		void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag,
161		int xclass)
162	334	{
163	334	unsigned char p = pp;
164	334	int i, ttag;
165
166	334	i = (constructed) ? V_ASN1_CONSTRUCTED : 0;
167	334	i \|= (xclass & V_ASN1_PRIVATE);
168	334	if (tag < 31) {
169	334	*(p++) = i \| (tag & V_ASN1_PRIMITIVE_TAG);
170	334	} else {
171	0	*(p++) = i \| V_ASN1_PRIMITIVE_TAG;
172	0	for (i = 0, ttag = tag; ttag > 0; i++)
173	0	ttag >>= 7;
174	0	ttag = i;
175	0	while (i-- > 0) {
176	0	p[i] = tag & 0x7f;
177	0	if (i != (ttag - 1))
178	0	p[i] \|= 0x80;
179	0	tag >>= 7;
180	0	}
181	0	p += ttag;
182	0	}
183	334	if (constructed == 2)
184	0	*(p++) = 0x80;
185	334	else
186	334	asn1_put_length(&p, length);
187	334	*pp = p;
188	334	}
189
190		int ASN1_put_eoc(unsigned char **pp)
191	0	{
192	0	unsigned char p = pp;
193
194	0	*p++ = 0;
195	0	*p++ = 0;
196	0	*pp = p;
197	0	return 2;
198	0	}
199
200		static void asn1_put_length(unsigned char **pp, int length)
201	334	{
202	334	unsigned char p = pp;
203	334	int i, len;
204
205	334	if (length <= 127) {
206	156	*(p++) = (unsigned char)length;
207	178	} else {
208	178	len = length;
209	489	for (i = 0; len > 0; i++)
210	311	len >>= 8;
211	178	*(p++) = i \| 0x80;
212	178	len = i;
213	489	while (i-- > 0) {
214	311	p[i] = length & 0xff;
215	311	length >>= 8;
216	311	}
217	178	p += len;
218	178	}
219	334	*pp = p;
220	334	}
221
222		int ASN1_object_size(int constructed, int length, int tag)
223	668	{
224	668	int ret = 1;
225
226	668	if (length < 0)
227	0	return -1;
228	668	if (tag >= 31) {
229	0	while (tag > 0) {
230	0	tag >>= 7;
231	0	ret++;
232	0	}
233	0	}
234	668	if (constructed == 2) {
235	0	ret += 3;
236	668	} else {
237	668	ret++;
238	668	if (length > 127) {
239	356	int tmplen = length;
240	978	while (tmplen > 0) {
241	622	tmplen >>= 8;
242	622	ret++;
243	622	}
244	356	}
245	668	}
246	668	if (ret >= INT_MAX - length)
247	0	return -1;
248	668	return ret + length;
249	668	}
250
251		int ASN1_STRING_copy(ASN1_STRING dst, const ASN1_STRING str)
252	4.11k	{
253	4.11k	if (str == NULL)
254	0	return 0;
255	4.11k	dst->type = str->type;
256	4.11k	if (!ASN1_STRING_set(dst, str->data, str->length))
257	0	return 0;
258		/* Copy flags but preserve embed value */
259	4.11k	dst->flags &= ASN1_STRING_FLAG_EMBED;
260	4.11k	dst->flags \|= str->flags & ~ASN1_STRING_FLAG_EMBED;
261	4.11k	return 1;
262	4.11k	}
263
264		ASN1_STRING ASN1_STRING_dup(const ASN1_STRING str)
265	0	{
266	0	ASN1_STRING *ret;
267
268	0	if (!str)
269	0	return NULL;
270	0	ret = ASN1_STRING_new();
271	0	if (ret == NULL)
272	0	return NULL;
273	0	if (!ASN1_STRING_copy(ret, str)) {
274	0	ASN1_STRING_free(ret);
275	0	return NULL;
276	0	}
277	0	return ret;
278	0	}
279
280		int ASN1_STRING_set(ASN1_STRING str, const void _data, int len_in)
281	8.97k	{
282	8.97k	unsigned char *c;
283	8.97k	const char *data = _data;
284	8.97k	size_t len;
285
286	8.97k	if (len_in < 0) {
287	0	if (data == NULL)
288	0	return 0;
289	0	len = strlen(data);
290	8.97k	} else {
291	8.97k	len = (size_t)len_in;
292	8.97k	}
293		/*
294		* Verify that the length fits within an integer for assignment to
295		* str->length below. The additional 1 is subtracted to allow for the
296		* '\0' terminator even though this isn't strictly necessary.
297		*/
298	8.97k	if (len > INT_MAX - 1) {
299	0	ERR_raise(ERR_LIB_ASN1, ASN1_R_TOO_LARGE);
300	0	return 0;
301	0	}
302	8.97k	if ((size_t)str->length <= len \|\| str->data == NULL) {
303	8.97k	c = str->data;
304	8.97k	#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
305		/* No NUL terminator in fuzzing builds */
306	8.97k	str->data = OPENSSL_realloc(c, len != 0 ? len : 1);
307		#else
308		str->data = OPENSSL_realloc(c, len + 1);
309		#endif
310	8.97k	if (str->data == NULL) {
311	0	ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
312	0	str->data = c;
313	0	return 0;
314	0	}
315	8.97k	}
316	8.97k	str->length = len;
317	8.97k	if (data != NULL) {
318	4.85k	memcpy(str->data, data, len);
319	4.85k	#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
320		/* Set the unused byte to something non NUL and printable. */
321	4.85k	if (len == 0)
322	2	str->data[len] = '~';
323		#else
324		/*
325		* Add a NUL terminator. This should not be necessary - but we add it as
326		* a safety precaution
327		*/
328		str->data[len] = '\0';
329		#endif
330	4.85k	}
331	8.97k	return 1;
332	8.97k	}
333
334		void ASN1_STRING_set0(ASN1_STRING str, void data, int len)
335	0	{
336	0	OPENSSL_free(str->data);
337	0	str->data = data;
338	0	str->length = len;
339	0	}
340
341		ASN1_STRING *ASN1_STRING_new(void)
342	0	{
343	0	return ASN1_STRING_type_new(V_ASN1_OCTET_STRING);
344	0	}
345
346		ASN1_STRING *ASN1_STRING_type_new(int type)
347	7.29k	{
348	7.29k	ASN1_STRING *ret;
349
350	7.29k	ret = OPENSSL_zalloc(sizeof(*ret));
351	7.29k	if (ret == NULL) {
352	0	ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
353	0	return NULL;
354	0	}
355	7.29k	ret->type = type;
356	7.29k	return ret;
357	7.29k	}
358
359		void ossl_asn1_string_embed_free(ASN1_STRING *a, int embed)
360	7.29k	{
361	7.29k	if (a == NULL)
362	0	return;
363	7.29k	if (!(a->flags & ASN1_STRING_FLAG_NDEF))
364	7.29k	OPENSSL_free(a->data);
365	7.29k	if (embed == 0)
366	7.29k	OPENSSL_free(a);
367	7.29k	}
368
369		void ASN1_STRING_free(ASN1_STRING *a)
370	7.29k	{
371	7.29k	if (a == NULL)
372	0	return;
373	7.29k	ossl_asn1_string_embed_free(a, a->flags & ASN1_STRING_FLAG_EMBED);
374	7.29k	}
375
376		void ASN1_STRING_clear_free(ASN1_STRING *a)
377	0	{
378	0	if (a == NULL)
379	0	return;
380	0	if (a->data && !(a->flags & ASN1_STRING_FLAG_NDEF))
381	0	OPENSSL_cleanse(a->data, a->length);
382	0	ASN1_STRING_free(a);
383	0	}
384
385		int ASN1_STRING_cmp(const ASN1_STRING a, const ASN1_STRING b)
386	0	{
387	0	int i;
388
389	0	i = (a->length - b->length);
390	0	if (i == 0) {
391	0	if (a->length != 0)
392	0	i = memcmp(a->data, b->data, a->length);
393	0	if (i == 0)
394	0	return a->type - b->type;
395	0	else
396	0	return i;
397	0	} else {
398	0	return i;
399	0	}
400	0	}
401
402		int ASN1_STRING_length(const ASN1_STRING *x)
403	0	{
404	0	return x->length;
405	0	}
406
407		#ifndef OPENSSL_NO_DEPRECATED_3_0
408		void ASN1_STRING_length_set(ASN1_STRING *x, int len)
409	0	{
410	0	x->length = len;
411	0	}
412		#endif
413
414		int ASN1_STRING_type(const ASN1_STRING *x)
415	0	{
416	0	return x->type;
417	0	}
418
419		const unsigned char ASN1_STRING_get0_data(const ASN1_STRING x)
420	6.34k	{
421	6.34k	return x->data;
422	6.34k	}
423
424		#ifndef OPENSSL_NO_DEPRECATED_1_1_0
425		unsigned char ASN1_STRING_data(ASN1_STRING x)
426	0	{
427	0	return x->data;
428	0	}
429		#endif
430
431		/* \|max_len\| excludes NUL terminator and may be 0 to indicate no restriction */
432		char ossl_sk_ASN1_UTF8STRING2text(STACK_OF(ASN1_UTF8STRING) text,
433		const char *sep, size_t max_len)
434	0	{
435	0	int i;
436	0	ASN1_UTF8STRING *current;
437	0	size_t length = 0, sep_len;
438	0	char *result = NULL;
439	0	char *p;
440
441	0	if (sep == NULL)
442	0	sep = "";
443	0	sep_len = strlen(sep);
444
445	0	for (i = 0; i < sk_ASN1_UTF8STRING_num(text); i++) {
446	0	current = sk_ASN1_UTF8STRING_value(text, i);
447	0	if (i > 0)
448	0	length += sep_len;
449	0	length += ASN1_STRING_length(current);
450	0	if (max_len != 0 && length > max_len)
451	0	return NULL;
452	0	}
453	0	if ((result = OPENSSL_malloc(length + 1)) == NULL)
454	0	return NULL;
455
456	0	p = result;
457	0	for (i = 0; i < sk_ASN1_UTF8STRING_num(text); i++) {
458	0	current = sk_ASN1_UTF8STRING_value(text, i);
459	0	length = ASN1_STRING_length(current);
460	0	if (i > 0 && sep_len > 0) {
461	0	strncpy(p, sep, sep_len + 1); /* using + 1 to silence gcc warning */
462	0	p += sep_len;
463	0	}
464	0	strncpy(p, (const char *)ASN1_STRING_get0_data(current), length);
465	0	p += length;
466	0	}
467	0	*p = '\0';
468
469	0	return result;
470	0	}