| /* 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 <openssl/asn1.h> |
| |
| #include <string.h> |
| |
| #include <openssl/buf.h> |
| #include <openssl/err.h> |
| #include <openssl/mem.h> |
| |
| static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c); |
| /* |
| * type is a 'bitmap' of acceptable string types. |
| */ |
| ASN1_STRING *d2i_ASN1_type_bytes(ASN1_STRING **a, const unsigned char **pp, |
| long length, int type) |
| { |
| ASN1_STRING *ret = NULL; |
| const unsigned char *p; |
| unsigned char *s; |
| long len; |
| int inf, tag, xclass; |
| int i = 0; |
| |
| p = *pp; |
| inf = ASN1_get_object(&p, &len, &tag, &xclass, length); |
| if (inf & 0x80) |
| goto err; |
| |
| if (tag >= 32) { |
| i = ASN1_R_TAG_VALUE_TOO_HIGH; |
| goto err; |
| } |
| if (!(ASN1_tag2bit(tag) & type)) { |
| i = ASN1_R_WRONG_TYPE; |
| goto err; |
| } |
| |
| /* If a bit-string, exit early */ |
| if (tag == V_ASN1_BIT_STRING) |
| return (d2i_ASN1_BIT_STRING(a, pp, length)); |
| |
| if ((a == NULL) || ((*a) == NULL)) { |
| if ((ret = ASN1_STRING_new()) == NULL) |
| return (NULL); |
| } else |
| ret = (*a); |
| |
| if (len != 0) { |
| s = (unsigned char *)OPENSSL_malloc((int)len + 1); |
| if (s == NULL) { |
| i = ERR_R_MALLOC_FAILURE; |
| goto err; |
| } |
| memcpy(s, p, (int)len); |
| s[len] = '\0'; |
| p += len; |
| } else |
| s = NULL; |
| |
| if (ret->data != NULL) |
| OPENSSL_free(ret->data); |
| ret->length = (int)len; |
| ret->data = s; |
| ret->type = tag; |
| if (a != NULL) |
| (*a) = ret; |
| *pp = p; |
| return (ret); |
| err: |
| OPENSSL_PUT_ERROR(ASN1, i); |
| if ((ret != NULL) && ((a == NULL) || (*a != ret))) |
| ASN1_STRING_free(ret); |
| return (NULL); |
| } |
| |
| int i2d_ASN1_bytes(ASN1_STRING *a, unsigned char **pp, int tag, int xclass) |
| { |
| int ret, r, constructed; |
| unsigned char *p; |
| |
| if (a == NULL) |
| return (0); |
| |
| if (tag == V_ASN1_BIT_STRING) |
| return (i2d_ASN1_BIT_STRING(a, pp)); |
| |
| ret = a->length; |
| r = ASN1_object_size(0, ret, tag); |
| if (pp == NULL) |
| return (r); |
| p = *pp; |
| |
| if ((tag == V_ASN1_SEQUENCE) || (tag == V_ASN1_SET)) |
| constructed = 1; |
| else |
| constructed = 0; |
| ASN1_put_object(&p, constructed, ret, tag, xclass); |
| memcpy(p, a->data, a->length); |
| p += a->length; |
| *pp = p; |
| return (r); |
| } |
| |
| ASN1_STRING *d2i_ASN1_bytes(ASN1_STRING **a, const unsigned char **pp, |
| long length, int Ptag, int Pclass) |
| { |
| ASN1_STRING *ret = NULL; |
| const unsigned char *p; |
| unsigned char *s; |
| long len; |
| int inf, tag, xclass; |
| int i = 0; |
| |
| if ((a == NULL) || ((*a) == NULL)) { |
| if ((ret = ASN1_STRING_new()) == NULL) |
| return (NULL); |
| } else |
| ret = (*a); |
| |
| p = *pp; |
| inf = ASN1_get_object(&p, &len, &tag, &xclass, length); |
| if (inf & 0x80) { |
| i = ASN1_R_BAD_OBJECT_HEADER; |
| goto err; |
| } |
| |
| if (tag != Ptag) { |
| i = ASN1_R_WRONG_TAG; |
| goto err; |
| } |
| |
| if (inf & V_ASN1_CONSTRUCTED) { |
| ASN1_const_CTX c; |
| |
| c.pp = pp; |
| c.p = p; |
| c.inf = inf; |
| c.slen = len; |
| c.tag = Ptag; |
| c.xclass = Pclass; |
| c.max = (length == 0) ? 0 : (p + length); |
| if (!asn1_collate_primitive(ret, &c)) |
| goto err; |
| else { |
| p = c.p; |
| } |
| } else { |
| if (len != 0) { |
| if ((ret->length < len) || (ret->data == NULL)) { |
| if (ret->data != NULL) |
| OPENSSL_free(ret->data); |
| s = (unsigned char *)OPENSSL_malloc((int)len + 1); |
| if (s == NULL) { |
| i = ERR_R_MALLOC_FAILURE; |
| goto err; |
| } |
| } else |
| s = ret->data; |
| memcpy(s, p, (int)len); |
| s[len] = '\0'; |
| p += len; |
| } else { |
| s = NULL; |
| if (ret->data != NULL) |
| OPENSSL_free(ret->data); |
| } |
| |
| ret->length = (int)len; |
| ret->data = s; |
| ret->type = Ptag; |
| } |
| |
| if (a != NULL) |
| (*a) = ret; |
| *pp = p; |
| return (ret); |
| err: |
| if ((ret != NULL) && ((a == NULL) || (*a != ret))) |
| ASN1_STRING_free(ret); |
| OPENSSL_PUT_ERROR(ASN1, i); |
| return (NULL); |
| } |
| |
| /* |
| * We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapse them |
| * into the one structure that is then returned |
| */ |
| /* |
| * There have been a few bug fixes for this function from Paul Keogh |
| * <paul.keogh@sse.ie>, many thanks to him |
| */ |
| static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c) |
| { |
| ASN1_STRING *os = NULL; |
| BUF_MEM b; |
| int num; |
| |
| b.length = 0; |
| b.max = 0; |
| b.data = NULL; |
| |
| if (a == NULL) { |
| c->error = ERR_R_PASSED_NULL_PARAMETER; |
| goto err; |
| } |
| |
| num = 0; |
| for (;;) { |
| if (c->inf & 1) { |
| c->eos = ASN1_const_check_infinite_end(&c->p, |
| (long)(c->max - c->p)); |
| if (c->eos) |
| break; |
| } else { |
| if (c->slen <= 0) |
| break; |
| } |
| |
| c->q = c->p; |
| if (d2i_ASN1_bytes(&os, &c->p, c->max - c->p, c->tag, c->xclass) |
| == NULL) { |
| c->error = ERR_R_ASN1_LIB; |
| goto err; |
| } |
| |
| if (!BUF_MEM_grow_clean(&b, num + os->length)) { |
| c->error = ERR_R_BUF_LIB; |
| goto err; |
| } |
| memcpy(&(b.data[num]), os->data, os->length); |
| if (!(c->inf & 1)) |
| c->slen -= (c->p - c->q); |
| num += os->length; |
| } |
| |
| if (!asn1_const_Finish(c)) |
| goto err; |
| |
| a->length = num; |
| if (a->data != NULL) |
| OPENSSL_free(a->data); |
| a->data = (unsigned char *)b.data; |
| if (os != NULL) |
| ASN1_STRING_free(os); |
| return (1); |
| err: |
| OPENSSL_PUT_ERROR(ASN1, c->error); |
| if (os != NULL) |
| ASN1_STRING_free(os); |
| if (b.data != NULL) |
| OPENSSL_free(b.data); |
| return (0); |
| } |
