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Diffstat (limited to 'openssl/crypto/asn1/asn_pack.c')
| -rw-r--r-- | openssl/crypto/asn1/asn_pack.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/openssl/crypto/asn1/asn_pack.c b/openssl/crypto/asn1/asn_pack.c new file mode 100644 index 000000000..f1a5a0563 --- /dev/null +++ b/openssl/crypto/asn1/asn_pack.c @@ -0,0 +1,191 @@ +/* asn_pack.c */ +/* 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 <stdio.h> +#include "cryptlib.h" +#include <openssl/asn1.h> + +#ifndef NO_ASN1_OLD + +/* ASN1 packing and unpacking functions */ + +/* Turn an ASN1 encoded SEQUENCE OF into a STACK of structures */ + +STACK *ASN1_seq_unpack(const unsigned char *buf, int len, + d2i_of_void *d2i,void (*free_func)(void *)) +{ + STACK *sk; + const unsigned char *pbuf; + pbuf = buf; + if (!(sk = d2i_ASN1_SET(NULL, &pbuf, len, d2i, free_func, + V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL))) + ASN1err(ASN1_F_ASN1_SEQ_UNPACK,ASN1_R_DECODE_ERROR); + return sk; +} + +/* Turn a STACK structures into an ASN1 encoded SEQUENCE OF structure in a + * OPENSSL_malloc'ed buffer + */ + +unsigned char *ASN1_seq_pack(STACK *safes, i2d_of_void *i2d, + unsigned char **buf, int *len) +{ + int safelen; + unsigned char *safe, *p; + if (!(safelen = i2d_ASN1_SET(safes, NULL, i2d, V_ASN1_SEQUENCE, + V_ASN1_UNIVERSAL, IS_SEQUENCE))) { + ASN1err(ASN1_F_ASN1_SEQ_PACK,ASN1_R_ENCODE_ERROR); + return NULL; + } + if (!(safe = OPENSSL_malloc (safelen))) { + ASN1err(ASN1_F_ASN1_SEQ_PACK,ERR_R_MALLOC_FAILURE); + return NULL; + } + p = safe; + i2d_ASN1_SET(safes, &p, i2d, V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, + IS_SEQUENCE); + if (len) *len = safelen; + if (buf) *buf = safe; + return safe; +} + +/* Extract an ASN1 object from an ASN1_STRING */ + +void *ASN1_unpack_string(ASN1_STRING *oct, d2i_of_void *d2i) +{ + const unsigned char *p; + char *ret; + + p = oct->data; + if(!(ret = d2i(NULL, &p, oct->length))) + ASN1err(ASN1_F_ASN1_UNPACK_STRING,ASN1_R_DECODE_ERROR); + return ret; +} + +/* Pack an ASN1 object into an ASN1_STRING */ + +ASN1_STRING *ASN1_pack_string(void *obj, i2d_of_void *i2d, ASN1_STRING **oct) +{ + unsigned char *p; + ASN1_STRING *octmp; + + if (!oct || !*oct) { + if (!(octmp = ASN1_STRING_new ())) { + ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE); + return NULL; + } + if (oct) *oct = octmp; + } else octmp = *oct; + + if (!(octmp->length = i2d(obj, NULL))) { + ASN1err(ASN1_F_ASN1_PACK_STRING,ASN1_R_ENCODE_ERROR); + return NULL; + } + if (!(p = OPENSSL_malloc (octmp->length))) { + ASN1err(ASN1_F_ASN1_PACK_STRING,ERR_R_MALLOC_FAILURE); + return NULL; + } + octmp->data = p; + i2d (obj, &p); + return octmp; +} + +#endif + +/* ASN1_ITEM versions of the above */ + +ASN1_STRING *ASN1_item_pack(void *obj, const ASN1_ITEM *it, ASN1_STRING **oct) +{ + ASN1_STRING *octmp; + + if (!oct || !*oct) { + if (!(octmp = ASN1_STRING_new ())) { + ASN1err(ASN1_F_ASN1_ITEM_PACK,ERR_R_MALLOC_FAILURE); + return NULL; + } + if (oct) *oct = octmp; + } else octmp = *oct; + + if(octmp->data) { + OPENSSL_free(octmp->data); + octmp->data = NULL; + } + + if (!(octmp->length = ASN1_item_i2d(obj, &octmp->data, it))) { + ASN1err(ASN1_F_ASN1_ITEM_PACK,ASN1_R_ENCODE_ERROR); + return NULL; + } + if (!octmp->data) { + ASN1err(ASN1_F_ASN1_ITEM_PACK,ERR_R_MALLOC_FAILURE); + return NULL; + } + return octmp; +} + +/* Extract an ASN1 object from an ASN1_STRING */ + +void *ASN1_item_unpack(ASN1_STRING *oct, const ASN1_ITEM *it) +{ + const unsigned char *p; + void *ret; + + p = oct->data; + if(!(ret = ASN1_item_d2i(NULL, &p, oct->length, it))) + ASN1err(ASN1_F_ASN1_ITEM_UNPACK,ASN1_R_DECODE_ERROR); + return ret; +} |