o_str.c revision 296341
1/* crypto/o_str.c -*- mode:C; c-file-style: "eay" -*- */ 2/* 3 * Written by Richard Levitte (richard@levitte.org) for the OpenSSL project 4 * 2003. 5 */ 6/* ==================================================================== 7 * Copyright (c) 2003 The OpenSSL Project. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. All advertising materials mentioning features or use of this 22 * software must display the following acknowledgment: 23 * "This product includes software developed by the OpenSSL Project 24 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 25 * 26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27 * endorse or promote products derived from this software without 28 * prior written permission. For written permission, please contact 29 * openssl-core@openssl.org. 30 * 31 * 5. Products derived from this software may not be called "OpenSSL" 32 * nor may "OpenSSL" appear in their names without prior written 33 * permission of the OpenSSL Project. 34 * 35 * 6. Redistributions of any form whatsoever must retain the following 36 * acknowledgment: 37 * "This product includes software developed by the OpenSSL Project 38 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51 * OF THE POSSIBILITY OF SUCH DAMAGE. 52 * ==================================================================== 53 * 54 * This product includes cryptographic software written by Eric Young 55 * (eay@cryptsoft.com). This product includes software written by Tim 56 * Hudson (tjh@cryptsoft.com). 57 * 58 */ 59 60#include <ctype.h> 61#include <e_os.h> 62#include "o_str.h" 63 64#if !defined(OPENSSL_IMPLEMENTS_strncasecmp) && \ 65 !defined(OPENSSL_SYSNAME_WIN32) && \ 66 !defined(NETWARE_CLIB) 67# include <strings.h> 68#endif 69 70int OPENSSL_strncasecmp(const char *str1, const char *str2, size_t n) 71{ 72#if defined(OPENSSL_IMPLEMENTS_strncasecmp) 73 while (*str1 && *str2 && n) { 74 int res = toupper(*str1) - toupper(*str2); 75 if (res) 76 return res < 0 ? -1 : 1; 77 str1++; 78 str2++; 79 n--; 80 } 81 if (n == 0) 82 return 0; 83 if (*str1) 84 return 1; 85 if (*str2) 86 return -1; 87 return 0; 88#else 89 /* 90 * Recursion hazard warning! Whenever strncasecmp is #defined as 91 * OPENSSL_strncasecmp, OPENSSL_IMPLEMENTS_strncasecmp must be defined as 92 * well. 93 */ 94 return strncasecmp(str1, str2, n); 95#endif 96} 97 98int OPENSSL_strcasecmp(const char *str1, const char *str2) 99{ 100#if defined(OPENSSL_IMPLEMENTS_strncasecmp) 101 return OPENSSL_strncasecmp(str1, str2, (size_t)-1); 102#else 103 return strcasecmp(str1, str2); 104#endif 105} 106 107int OPENSSL_memcmp(const void *v1, const void *v2, size_t n) 108{ 109 const unsigned char *c1 = v1, *c2 = v2; 110 int ret = 0; 111 112 while (n && (ret = *c1 - *c2) == 0) 113 n--, c1++, c2++; 114 115 return ret; 116} 117