xref: /freebsd/crypto/heimdal/lib/asn1/der_cmp.c (revision 81ad6265)
1 /*
2  * Copyright (c) 2003-2005 Kungliga Tekniska Högskolan
3  * (Royal Institute of Technology, Stockholm, Sweden).
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * 3. Neither the name of the Institute nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #include "der_locl.h"
35 
36 int
37 der_heim_oid_cmp(const heim_oid *p, const heim_oid *q)
38 {
39     if (p->length != q->length)
40 	return p->length - q->length;
41     return memcmp(p->components,
42 		  q->components,
43 		  p->length * sizeof(*p->components));
44 }
45 
46 int
47 der_heim_octet_string_cmp(const heim_octet_string *p,
48 			  const heim_octet_string *q)
49 {
50     if (p->length != q->length)
51 	return p->length - q->length;
52     return memcmp(p->data, q->data, p->length);
53 }
54 
55 int
56 der_printable_string_cmp(const heim_printable_string *p,
57 			 const heim_printable_string *q)
58 {
59     return der_heim_octet_string_cmp(p, q);
60 }
61 
62 int
63 der_ia5_string_cmp(const heim_ia5_string *p,
64 		   const heim_ia5_string *q)
65 {
66     return der_heim_octet_string_cmp(p, q);
67 }
68 
69 int
70 der_heim_bit_string_cmp(const heim_bit_string *p,
71 			const heim_bit_string *q)
72 {
73     int i, r1, r2;
74     if (p->length != q->length)
75 	return p->length - q->length;
76     i = memcmp(p->data, q->data, p->length / 8);
77     if (i)
78 	return i;
79     if ((p->length % 8) == 0)
80 	return 0;
81     i = (p->length / 8);
82     r1 = ((unsigned char *)p->data)[i];
83     r2 = ((unsigned char *)q->data)[i];
84     i = 8 - (p->length % 8);
85     r1 = r1 >> i;
86     r2 = r2 >> i;
87     return r1 - r2;
88 }
89 
90 int
91 der_heim_integer_cmp(const heim_integer *p,
92 		     const heim_integer *q)
93 {
94     if (p->negative != q->negative)
95 	return q->negative - p->negative;
96     if (p->length != q->length)
97 	return p->length - q->length;
98     return memcmp(p->data, q->data, p->length);
99 }
100 
101 int
102 der_heim_bmp_string_cmp(const heim_bmp_string *p, const heim_bmp_string *q)
103 {
104     if (p->length != q->length)
105 	return p->length - q->length;
106     return memcmp(p->data, q->data, q->length * sizeof(q->data[0]));
107 }
108 
109 int
110 der_heim_universal_string_cmp(const heim_universal_string *p,
111 			      const heim_universal_string *q)
112 {
113     if (p->length != q->length)
114 	return p->length - q->length;
115     return memcmp(p->data, q->data, q->length * sizeof(q->data[0]));
116 }
117