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Diffstat (limited to 'openssl/crypto/asn1/a_bitstr.c')
-rw-r--r--openssl/crypto/asn1/a_bitstr.c248
1 files changed, 0 insertions, 248 deletions
diff --git a/openssl/crypto/asn1/a_bitstr.c b/openssl/crypto/asn1/a_bitstr.c
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index 34179960..00000000
--- a/openssl/crypto/asn1/a_bitstr.c
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-/* crypto/asn1/a_bitstr.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 "cryptlib.h"
-#include <openssl/asn1.h>
-
-int ASN1_BIT_STRING_set(ASN1_BIT_STRING *x, unsigned char *d, int len)
-{ return M_ASN1_BIT_STRING_set(x, d, len); }
-
-int i2c_ASN1_BIT_STRING(ASN1_BIT_STRING *a, unsigned char **pp)
- {
- int ret,j,bits,len;
- unsigned char *p,*d;
-
- if (a == NULL) return(0);
-
- len=a->length;
-
- if (len > 0)
- {
- if (a->flags & ASN1_STRING_FLAG_BITS_LEFT)
- {
- bits=(int)a->flags&0x07;
- }
- else
- {
- for ( ; len > 0; len--)
- {
- if (a->data[len-1]) break;
- }
- j=a->data[len-1];
- if (j & 0x01) bits=0;
- else if (j & 0x02) bits=1;
- else if (j & 0x04) bits=2;
- else if (j & 0x08) bits=3;
- else if (j & 0x10) bits=4;
- else if (j & 0x20) bits=5;
- else if (j & 0x40) bits=6;
- else if (j & 0x80) bits=7;
- else bits=0; /* should not happen */
- }
- }
- else
- bits=0;
-
- ret=1+len;
- if (pp == NULL) return(ret);
-
- p= *pp;
-
- *(p++)=(unsigned char)bits;
- d=a->data;
- memcpy(p,d,len);
- p+=len;
- if (len > 0) p[-1]&=(0xff<<bits);
- *pp=p;
- return(ret);
- }
-
-ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a,
- const unsigned char **pp, long len)
- {
- ASN1_BIT_STRING *ret=NULL;
- const unsigned char *p;
- unsigned char *s;
- int i;
-
- if (len < 1)
- {
- i=ASN1_R_STRING_TOO_SHORT;
- goto err;
- }
-
- if ((a == NULL) || ((*a) == NULL))
- {
- if ((ret=M_ASN1_BIT_STRING_new()) == NULL) return(NULL);
- }
- else
- ret=(*a);
-
- p= *pp;
- i= *(p++);
- /* We do this to preserve the settings. If we modify
- * the settings, via the _set_bit function, we will recalculate
- * on output */
- ret->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); /* clear */
- ret->flags|=(ASN1_STRING_FLAG_BITS_LEFT|(i&0x07)); /* set */
-
- if (len-- > 1) /* using one because of the bits left byte */
- {
- s=(unsigned char *)OPENSSL_malloc((int)len);
- if (s == NULL)
- {
- i=ERR_R_MALLOC_FAILURE;
- goto err;
- }
- memcpy(s,p,(int)len);
- s[len-1]&=(0xff<<i);
- p+=len;
- }
- else
- s=NULL;
-
- ret->length=(int)len;
- if (ret->data != NULL) OPENSSL_free(ret->data);
- ret->data=s;
- ret->type=V_ASN1_BIT_STRING;
- if (a != NULL) (*a)=ret;
- *pp=p;
- return(ret);
-err:
- ASN1err(ASN1_F_C2I_ASN1_BIT_STRING,i);
- if ((ret != NULL) && ((a == NULL) || (*a != ret)))
- M_ASN1_BIT_STRING_free(ret);
- return(NULL);
- }
-
-/* These next 2 functions from Goetz Babin-Ebell <babinebell@trustcenter.de>
- */
-int ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value)
- {
- int w,v,iv;
- unsigned char *c;
-
- w=n/8;
- v=1<<(7-(n&0x07));
- iv= ~v;
- if (!value) v=0;
-
- if (a == NULL)
- return 0;
-
- a->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); /* clear, set on write */
-
- if ((a->length < (w+1)) || (a->data == NULL))
- {
- if (!value) return(1); /* Don't need to set */
- if (a->data == NULL)
- c=(unsigned char *)OPENSSL_malloc(w+1);
- else
- c=(unsigned char *)OPENSSL_realloc_clean(a->data,
- a->length,
- w+1);
- if (c == NULL)
- {
- ASN1err(ASN1_F_ASN1_BIT_STRING_SET_BIT,ERR_R_MALLOC_FAILURE);
- return 0;
- }
- if (w+1-a->length > 0) memset(c+a->length, 0, w+1-a->length);
- a->data=c;
- a->length=w+1;
- }
- a->data[w]=((a->data[w])&iv)|v;
- while ((a->length > 0) && (a->data[a->length-1] == 0))
- a->length--;
- return(1);
- }
-
-int ASN1_BIT_STRING_get_bit(ASN1_BIT_STRING *a, int n)
- {
- int w,v;
-
- w=n/8;
- v=1<<(7-(n&0x07));
- if ((a == NULL) || (a->length < (w+1)) || (a->data == NULL))
- return(0);
- return((a->data[w]&v) != 0);
- }
-
-/*
- * Checks if the given bit string contains only bits specified by
- * the flags vector. Returns 0 if there is at least one bit set in 'a'
- * which is not specified in 'flags', 1 otherwise.
- * 'len' is the length of 'flags'.
- */
-int ASN1_BIT_STRING_check(ASN1_BIT_STRING *a,
- unsigned char *flags, int flags_len)
- {
- int i, ok;
- /* Check if there is one bit set at all. */
- if (!a || !a->data) return 1;
-
- /* Check each byte of the internal representation of the bit string. */
- ok = 1;
- for (i = 0; i < a->length && ok; ++i)
- {
- unsigned char mask = i < flags_len ? ~flags[i] : 0xff;
- /* We are done if there is an unneeded bit set. */
- ok = (a->data[i] & mask) == 0;
- }
- return ok;
- }
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