1 /* crypto/o_str.c -*- mode:C; c-file-style: "eay" -*- */
2 /* Written by Richard Levitte (richard@levitte.org) for the OpenSSL
3 * project 2003.
4 */
5 /* ====================================================================
6 * Copyright (c) 2003 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * openssl-core@openssl.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59 #include <ctype.h>
60 #include <e_os.h>
61 #include "o_str.h"
62
63 #if !defined(OPENSSL_IMPLEMENTS_strncasecmp) && !defined(OPENSSL_SYSNAME_WIN32)
64 # include <strings.h>
65 #endif
66
OPENSSL_strncasecmp(const char * str1,const char * str2,size_t n)67 int OPENSSL_strncasecmp(const char *str1, const char *str2, size_t n)
68 {
69 #if defined(OPENSSL_IMPLEMENTS_strncasecmp)
70 while (*str1 && *str2 && n)
71 {
72 int res = toupper(*str1) - toupper(*str2);
73 if (res) return res < 0 ? -1 : 1;
74 str1++;
75 str2++;
76 n--;
77 }
78 if (n == 0)
79 return 0;
80 if (*str1)
81 return 1;
82 if (*str2)
83 return -1;
84 return 0;
85 #else
86 /* Recursion hazard warning! Whenever strncasecmp is #defined as
87 * OPENSSL_strncasecmp, OPENSSL_IMPLEMENTS_strncasecmp must be
88 * defined as well. */
89 return strncasecmp(str1, str2, n);
90 #endif
91 }
OPENSSL_strcasecmp(const char * str1,const char * str2)92 int OPENSSL_strcasecmp(const char *str1, const char *str2)
93 {
94 #if defined(OPENSSL_IMPLEMENTS_strncasecmp)
95 return OPENSSL_strncasecmp(str1, str2, (size_t)-1);
96 #else
97 return strcasecmp(str1, str2);
98 #endif
99 }
100
OPENSSL_memcmp(const void * v1,const void * v2,size_t n)101 int OPENSSL_memcmp(const void *v1,const void *v2,size_t n)
102 {
103 const unsigned char *c1=v1,*c2=v2;
104 int ret=0;
105
106 while(n && (ret=*c1-*c2)==0) n--,c1++,c2++;
107
108 return ret;
109 }
110