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/*
* Copyright (c) 2003-2005 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE 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.
*/
#include "der_locl.h"
int ASN1CALL
der_heim_oid_cmp(const heim_oid *p, const heim_oid *q)
{
int c;
if (p->length == q->length) {
if (p->length == 0)
return 0;
return memcmp(p->components,
q->components,
p->length * sizeof(*p->components));
}
if (p->length < q->length) {
if (p->length == 0 ||
(c = memcmp(p->components,
q->components,
p->length * sizeof(*p->components))) == 0)
return -1;
return c;
}
if (q->length == 0 ||
(c = memcmp(p->components,
q->components,
q->length * sizeof(*p->components))) == 0)
return 1;
return c;
}
int ASN1CALL
der_heim_octet_string_cmp(const heim_octet_string *p,
const heim_octet_string *q)
{
int c;
if (p->length == q->length) {
if (p->length == 0)
return 0;
return memcmp(p->data, q->data, p->length);
}
if (p->length < q->length) {
if (p->length == 0 ||
(c = memcmp(p->data, q->data, p->length)) == 0)
return -1;
return c;
}
if (q->length == 0 ||
(c = memcmp(p->data, q->data, q->length)) == 0)
return 1;
return c;
}
int ASN1CALL
der_printable_string_cmp(const heim_printable_string *p,
const heim_printable_string *q)
{
return der_heim_octet_string_cmp(p, q);
}
int ASN1CALL
der_ia5_string_cmp(const heim_ia5_string *p,
const heim_ia5_string *q)
{
return der_heim_octet_string_cmp(p, q);
}
int ASN1CALL
der_heim_bit_string_cmp(const heim_bit_string *p,
const heim_bit_string *q)
{
unsigned char pc, qc;
size_t bits;
int c = 0;
/* Compare prefix */
if (p->length == 0 && q->length == 0)
return 0;
if (p->length > 7 && q->length > 7) {
if (p->length < q->length)
c = memcmp(p->data, q->data, p->length / 8);
else
c = memcmp(p->data, q->data, q->length / 8);
}
if (c)
return c;
/* Prefixes are equal, c == 0 */
if (p->length == q->length && p->length % 8 == 0)
return 0;
if (p->length == 0 && q->length)
return -1; /* No trailing bits of p to compare to corresponding bits of q */
if (q->length == 0 && p->length)
return 1; /* No trailing bits of q to compare to corresponding bits of p */
/* c == 0, lengths are not equal, both are at least 1 bit */
pc = ((unsigned char *)p->data)[p->length / 8];
qc = ((unsigned char *)q->data)[q->length / 8];
if (p->length < q->length)
bits = p->length % 8;
else
bits = q->length % 8;
if (bits > 0) {
if ((pc & 0x80) == 0 && (qc & 0x80) != 0)
return -1;
if ((pc & 0x80) != 0 && (qc & 0x80) == 0)
return 1;
}
if (bits > 1) {
if ((pc & 0x40) == 0 && (qc & 0x40) != 0)
return -1;
if ((pc & 0x40) != 0 && (qc & 0x40) == 0)
return 1;
}
if (bits > 2) {
if ((pc & 0x20) == 0 && (qc & 0x20) != 0)
return -1;
if ((pc & 0x20) != 0 && (qc & 0x20) == 0)
return 1;
}
if (bits > 3) {
if ((pc & 0x10) == 0 && (qc & 0x10) != 0)
return -1;
if ((pc & 0x10) != 0 && (qc & 0x10) == 0)
return 1;
}
if (bits > 4) {
if ((pc & 0x08) == 0 && (qc & 0x08) != 0)
return -1;
if ((pc & 0x08) != 0 && (qc & 0x08) == 0)
return 1;
}
if (bits > 5) {
if ((pc & 0x04) == 0 && (qc & 0x04) != 0)
return -1;
if ((pc & 0x04) != 0 && (qc & 0x04) == 0)
return 1;
}
if (bits > 6) {
if ((pc & 0x02) == 0 && (qc & 0x02) != 0)
return -1;
if ((pc & 0x02) != 0 && (qc & 0x02) == 0)
return 1;
}
/*
* `bits' can't be 8.
*
* All leading `bits' bits of the tail of the shorter of `p' or `q' are
* equal.
*/
if (p->length < q->length)
return -1;
if (q->length < p->length)
return 1;
return 0;
}
int ASN1CALL
der_heim_integer_cmp(const heim_integer *p,
const heim_integer *q)
{
if (p->negative != q->negative)
return q->negative - p->negative;
if (p->length != q->length)
return (int)(p->length - q->length);
return memcmp(p->data, q->data, p->length);
}
int ASN1CALL
der_heim_bmp_string_cmp(const heim_bmp_string *p, const heim_bmp_string *q)
{
int c;
if (p->length == q->length) {
if (p->length == 0)
return 0;
return memcmp(p->data, q->data, p->length * sizeof(q->data[0]));
}
if (p->length < q->length) {
if (p->length == 0 ||
(c = memcmp(p->data, q->data, p->length * sizeof(q->data[0]))) == 0)
return -1;
return c;
}
if (q->length == 0 ||
(c = memcmp(p->data, q->data, q->length * sizeof(q->data[0]))) == 0)
return 1;
return c;
}
int ASN1CALL
der_heim_universal_string_cmp(const heim_universal_string *p,
const heim_universal_string *q)
{
int c;
if (p->length == q->length) {
if (p->length == 0)
return 0;
return memcmp(p->data, q->data, p->length * sizeof(q->data[0]));
}
if (p->length < q->length) {
if (p->length == 0 ||
(c = memcmp(p->data, q->data, p->length * sizeof(q->data[0]))) == 0)
return -1;
return c;
}
if (q->length == 0 ||
(c = memcmp(p->data, q->data, q->length * sizeof(q->data[0]))) == 0)
return 1;
return c;
}
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