crypto/asn1/a_set.c

/* crypto/asn1/a_set.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include <limits.h>
#include "cryptlib.h"
#include <openssl/asn1_mac.h>

#ifndef NO_ASN1_OLD

typedef struct {
    unsigned char *pbData;
    int cbData;
} MYBLOB;

/*
 * SetBlobCmp This function compares two elements of SET_OF block
 */
static int SetBlobCmp(const void *elem1, const void *elem2)
{
    const MYBLOB *b1 = (const MYBLOB *)elem1;
    const MYBLOB *b2 = (const MYBLOB *)elem2;
    int r;

    r = memcmp(b1->pbData, b2->pbData,
               b1->cbData < b2->cbData ? b1->cbData : b2->cbData);
    if (r != 0)
        return r;
    return b1->cbData - b2->cbData;
}

/*
 * int is_set: if TRUE, then sort the contents (i.e. it isn't a SEQUENCE)
 */
int i2d_ASN1_SET(STACK_OF(OPENSSL_BLOCK) *a, unsigned char **pp,
                 i2d_of_void *i2d, int ex_tag, int ex_class, int is_set)
{
    int ret = 0, r;
    int i;
    unsigned char *p;
    unsigned char *pStart, *pTempMem;
    MYBLOB *rgSetBlob;
    int totSize;

    if (a == NULL)
        return (0);
    for (i = sk_OPENSSL_BLOCK_num(a) - 1; i >= 0; i--) {
        int tmplen = i2d(sk_OPENSSL_BLOCK_value(a, i), NULL);
        if (tmplen > INT_MAX - ret)
            return -1;
        ret += i2d(sk_OPENSSL_BLOCK_value(a, i), NULL);
    }
    r = ASN1_object_size(1, ret, ex_tag);
    if (pp == NULL || r == -1)
        return (r);

    p = *pp;
    ASN1_put_object(&p, 1, ret, ex_tag, ex_class);

/* Modified by gp@nsj.co.jp */
    /* And then again by Ben */
    /* And again by Steve */

    if (!is_set || (sk_OPENSSL_BLOCK_num(a) < 2)) {
        for (i = 0; i < sk_OPENSSL_BLOCK_num(a); i++)
            i2d(sk_OPENSSL_BLOCK_value(a, i), &p);

        *pp = p;
        return (r);
    }

    pStart = p;                 /* Catch the beg of Setblobs */
    /* In this array we will store the SET blobs */
    rgSetBlob = OPENSSL_malloc(sk_OPENSSL_BLOCK_num(a) * sizeof(MYBLOB));
    if (rgSetBlob == NULL) {
        ASN1err(ASN1_F_I2D_ASN1_SET, ERR_R_MALLOC_FAILURE);
        return (0);
    }

    for (i = 0; i < sk_OPENSSL_BLOCK_num(a); i++) {
        rgSetBlob[i].pbData = p; /* catch each set encode blob */
        i2d(sk_OPENSSL_BLOCK_value(a, i), &p);
        rgSetBlob[i].cbData = p - rgSetBlob[i].pbData; /* Length of this
                                                        * SetBlob */
    }
    *pp = p;
    totSize = p - pStart;       /* This is the total size of all set blobs */

    /*
     * Now we have to sort the blobs. I am using a simple algo. *Sort ptrs
     * *Copy to temp-mem *Copy from temp-mem to user-mem
     */
    qsort(rgSetBlob, sk_OPENSSL_BLOCK_num(a), sizeof(MYBLOB), SetBlobCmp);
    if (!(pTempMem = OPENSSL_malloc(totSize))) {
        ASN1err(ASN1_F_I2D_ASN1_SET, ERR_R_MALLOC_FAILURE);
        return (0);
    }

/* Copy to temp mem */
    p = pTempMem;
    for (i = 0; i < sk_OPENSSL_BLOCK_num(a); ++i) {
        memcpy(p, rgSetBlob[i].pbData, rgSetBlob[i].cbData);
        p += rgSetBlob[i].cbData;
    }

/* Copy back to user mem*/
    memcpy(pStart, pTempMem, totSize);
    OPENSSL_free(pTempMem);
    OPENSSL_free(rgSetBlob);

    return (r);
}

STACK_OF(OPENSSL_BLOCK) *d2i_ASN1_SET(STACK_OF(OPENSSL_BLOCK) **a,
                                      const unsigned char **pp,
                                      long length, d2i_of_void *d2i,
                                      void (*free_func) (OPENSSL_BLOCK),
                                      int ex_tag, int ex_class)
{
    ASN1_const_CTX c;
    STACK_OF(OPENSSL_BLOCK) *ret = NULL;

    if ((a == NULL) || ((*a) == NULL)) {
        if ((ret = sk_OPENSSL_BLOCK_new_null()) == NULL) {
            ASN1err(ASN1_F_D2I_ASN1_SET, ERR_R_MALLOC_FAILURE);
            goto err;
        }
    } else
        ret = (*a);

    c.p = *pp;
    c.max = (length == 0) ? 0 : (c.p + length);

    c.inf = ASN1_get_object(&c.p, &c.slen, &c.tag, &c.xclass, c.max - c.p);
    if (c.inf & 0x80)
        goto err;
    if (ex_class != c.xclass) {
        ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_BAD_CLASS);
        goto err;
    }
    if (ex_tag != c.tag) {
        ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_BAD_TAG);
        goto err;
    }
    if ((c.slen + c.p) > c.max) {
        ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_LENGTH_ERROR);
        goto err;
    }
    /*
     * check for infinite constructed - it can be as long as the amount of
     * data passed to us
     */
    if (c.inf == (V_ASN1_CONSTRUCTED + 1))
        c.slen = length + *pp - c.p;
    c.max = c.p + c.slen;

    while (c.p < c.max) {
        char *s;

        if (M_ASN1_D2I_end_sequence())
            break;
        /*
         * XXX: This was called with 4 arguments, incorrectly, it seems if
         * ((s=func(NULL,&c.p,c.slen,c.max-c.p)) == NULL)
         */
        if ((s = d2i(NULL, &c.p, c.slen)) == NULL) {
            ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_ERROR_PARSING_SET_ELEMENT);
            asn1_add_error(*pp, (int)(c.p - *pp));
            goto err;
        }
        if (!sk_OPENSSL_BLOCK_push(ret, s))
            goto err;
    }
    if (a != NULL)
        (*a) = ret;
    *pp = c.p;
    return (ret);
 err:
    if ((ret != NULL) && ((a == NULL) || (*a != ret))) {
        if (free_func != NULL)
            sk_OPENSSL_BLOCK_pop_free(ret, free_func);
        else
            sk_OPENSSL_BLOCK_free(ret);
    }
    return (NULL);
}

#endif
Revision:	11606
Committed:	Sun Jul 8 16:17:13 2018 UTC (5 years, 9 months ago) by laffer1
Content type:	text/plain
File size:	8503 byte(s)
Log Message:	tag 1.0.1u
#	Content
1	/* crypto/asn1/a_set.c */
2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3	* All rights reserved.
4	*
5	* This package is an SSL implementation written
6	* by Eric Young (eay@cryptsoft.com).
7	* The implementation was written so as to conform with Netscapes SSL.
8	*
9	* This library is free for commercial and non-commercial use as long as
10	* the following conditions are aheared to. The following conditions
11	* apply to all code found in this distribution, be it the RC4, RSA,
12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
13	* included with this distribution is covered by the same copyright terms
14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
15	*
16	* Copyright remains Eric Young's, and as such any Copyright notices in
17	* the code are not to be removed.
18	* If this package is used in a product, Eric Young should be given attribution
19	* as the author of the parts of the library used.
20	* This can be in the form of a textual message at program startup or
21	* in documentation (online or textual) provided with the package.
22	*
23	* Redistribution and use in source and binary forms, with or without
24	* modification, are permitted provided that the following conditions
25	* are met:
26	* 1. Redistributions of source code must retain the copyright
27	* notice, this list of conditions and the following disclaimer.
28	* 2. Redistributions in binary form must reproduce the above copyright
29	* notice, this list of conditions and the following disclaimer in the
30	* documentation and/or other materials provided with the distribution.
31	* 3. All advertising materials mentioning features or use of this software
32	* must display the following acknowledgement:
33	* "This product includes cryptographic software written by
34	* Eric Young (eay@cryptsoft.com)"
35	* The word 'cryptographic' can be left out if the rouines from the library
36	* being used are not cryptographic related :-).
37	* 4. If you include any Windows specific code (or a derivative thereof) from
38	* the apps directory (application code) you must include an acknowledgement:
39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40	*
41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51	* SUCH DAMAGE.
52	*
53	* The licence and distribution terms for any publically available version or
54	* derivative of this code cannot be changed. i.e. this code cannot simply be
55	* copied and put under another distribution licence
56	* [including the GNU Public Licence.]
57	*/
58
59	#include <stdio.h>
60	#include <limits.h>
61	#include "cryptlib.h"
62	#include <openssl/asn1_mac.h>
63
64	#ifndef NO_ASN1_OLD
65
66	typedef struct {
67	unsigned char *pbData;
68	int cbData;
69	} MYBLOB;
70
71	/*
72	* SetBlobCmp This function compares two elements of SET_OF block
73	*/
74	static int SetBlobCmp(const void elem1, const void elem2)
75	{
76	const MYBLOB b1 = (const MYBLOB )elem1;
77	const MYBLOB b2 = (const MYBLOB )elem2;
78	int r;
79
80	r = memcmp(b1->pbData, b2->pbData,
81	b1->cbData < b2->cbData ? b1->cbData : b2->cbData);
82	if (r != 0)
83	return r;
84	return b1->cbData - b2->cbData;
85	}
86
87	/*
88	* int is_set: if TRUE, then sort the contents (i.e. it isn't a SEQUENCE)
89	*/
90	int i2d_ASN1_SET(STACK_OF(OPENSSL_BLOCK) a, unsigned char *pp,
91	i2d_of_void *i2d, int ex_tag, int ex_class, int is_set)
92	{
93	int ret = 0, r;
94	int i;
95	unsigned char *p;
96	unsigned char pStart, pTempMem;
97	MYBLOB *rgSetBlob;
98	int totSize;
99
100	if (a == NULL)
101	return (0);
102	for (i = sk_OPENSSL_BLOCK_num(a) - 1; i >= 0; i--) {
103	int tmplen = i2d(sk_OPENSSL_BLOCK_value(a, i), NULL);
104	if (tmplen > INT_MAX - ret)
105	return -1;
106	ret += i2d(sk_OPENSSL_BLOCK_value(a, i), NULL);
107	}
108	r = ASN1_object_size(1, ret, ex_tag);
109	if (pp == NULL \|\| r == -1)
110	return (r);
111
112	p = *pp;
113	ASN1_put_object(&p, 1, ret, ex_tag, ex_class);
114
115	/* Modified by gp@nsj.co.jp */
116	/* And then again by Ben */
117	/* And again by Steve */
118
119	if (!is_set \|\| (sk_OPENSSL_BLOCK_num(a) < 2)) {
120	for (i = 0; i < sk_OPENSSL_BLOCK_num(a); i++)
121	i2d(sk_OPENSSL_BLOCK_value(a, i), &p);
122
123	*pp = p;
124	return (r);
125	}
126
127	pStart = p; /* Catch the beg of Setblobs */
128	/* In this array we will store the SET blobs */
129	rgSetBlob = OPENSSL_malloc(sk_OPENSSL_BLOCK_num(a) * sizeof(MYBLOB));
130	if (rgSetBlob == NULL) {
131	ASN1err(ASN1_F_I2D_ASN1_SET, ERR_R_MALLOC_FAILURE);
132	return (0);
133	}
134
135	for (i = 0; i < sk_OPENSSL_BLOCK_num(a); i++) {
136	rgSetBlob[i].pbData = p; /* catch each set encode blob */
137	i2d(sk_OPENSSL_BLOCK_value(a, i), &p);
138	rgSetBlob[i].cbData = p - rgSetBlob[i].pbData; /* Length of this
139	* SetBlob */
140	}
141	*pp = p;
142	totSize = p - pStart; /* This is the total size of all set blobs */
143
144	/*
145	* Now we have to sort the blobs. I am using a simple algo. *Sort ptrs
146	* Copy to temp-mem Copy from temp-mem to user-mem
147	*/
148	qsort(rgSetBlob, sk_OPENSSL_BLOCK_num(a), sizeof(MYBLOB), SetBlobCmp);
149	if (!(pTempMem = OPENSSL_malloc(totSize))) {
150	ASN1err(ASN1_F_I2D_ASN1_SET, ERR_R_MALLOC_FAILURE);
151	return (0);
152	}
153
154	/* Copy to temp mem */
155	p = pTempMem;
156	for (i = 0; i < sk_OPENSSL_BLOCK_num(a); ++i) {
157	memcpy(p, rgSetBlob[i].pbData, rgSetBlob[i].cbData);
158	p += rgSetBlob[i].cbData;
159	}
160
161	/* Copy back to user mem*/
162	memcpy(pStart, pTempMem, totSize);
163	OPENSSL_free(pTempMem);
164	OPENSSL_free(rgSetBlob);
165
166	return (r);
167	}
168
169	STACK_OF(OPENSSL_BLOCK) d2i_ASN1_SET(STACK_OF(OPENSSL_BLOCK) *a,
170	const unsigned char **pp,
171	long length, d2i_of_void *d2i,
172	void (*free_func) (OPENSSL_BLOCK),
173	int ex_tag, int ex_class)
174	{
175	ASN1_const_CTX c;
176	STACK_OF(OPENSSL_BLOCK) *ret = NULL;
177
178	if ((a == NULL) \|\| ((*a) == NULL)) {
179	if ((ret = sk_OPENSSL_BLOCK_new_null()) == NULL) {
180	ASN1err(ASN1_F_D2I_ASN1_SET, ERR_R_MALLOC_FAILURE);
181	goto err;
182	}
183	} else
184	ret = (*a);
185
186	c.p = *pp;
187	c.max = (length == 0) ? 0 : (c.p + length);
188
189	c.inf = ASN1_get_object(&c.p, &c.slen, &c.tag, &c.xclass, c.max - c.p);
190	if (c.inf & 0x80)
191	goto err;
192	if (ex_class != c.xclass) {
193	ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_BAD_CLASS);
194	goto err;
195	}
196	if (ex_tag != c.tag) {
197	ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_BAD_TAG);
198	goto err;
199	}
200	if ((c.slen + c.p) > c.max) {
201	ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_LENGTH_ERROR);
202	goto err;
203	}
204	/*
205	* check for infinite constructed - it can be as long as the amount of
206	* data passed to us
207	*/
208	if (c.inf == (V_ASN1_CONSTRUCTED + 1))
209	c.slen = length + *pp - c.p;
210	c.max = c.p + c.slen;
211
212	while (c.p < c.max) {
213	char *s;
214
215	if (M_ASN1_D2I_end_sequence())
216	break;
217	/*
218	* XXX: This was called with 4 arguments, incorrectly, it seems if
219	* ((s=func(NULL,&c.p,c.slen,c.max-c.p)) == NULL)
220	*/
221	if ((s = d2i(NULL, &c.p, c.slen)) == NULL) {
222	ASN1err(ASN1_F_D2I_ASN1_SET, ASN1_R_ERROR_PARSING_SET_ELEMENT);
223	asn1_add_error(pp, (int)(c.p - pp));
224	goto err;
225	}
226	if (!sk_OPENSSL_BLOCK_push(ret, s))
227	goto err;
228	}
229	if (a != NULL)
230	(*a) = ret;
231	*pp = c.p;
232	return (ret);
233	err:
234	if ((ret != NULL) && ((a == NULL) \|\| (*a != ret))) {
235	if (free_func != NULL)
236	sk_OPENSSL_BLOCK_pop_free(ret, free_func);
237	else
238	sk_OPENSSL_BLOCK_free(ret);
239	}
240	return (NULL);
241	}
242
243	#endif