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Diffstat (limited to 'openssl/crypto/asn1/a_set.c')
| -rw-r--r-- | openssl/crypto/asn1/a_set.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/openssl/crypto/asn1/a_set.c b/openssl/crypto/asn1/a_set.c new file mode 100644 index 0000000..5fb5865 --- /dev/null +++ b/openssl/crypto/asn1/a_set.c @@ -0,0 +1,243 @@ +/* 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 |