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o_str.c
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1 /* crypto/o_str.c -*- mode:C; c-file-style: "eay" -*- */
2 /* Written by Richard Levitte ([email protected]) for the OpenSSL
3  * project 2003.
4  */
5 /* ====================================================================
6  * Copyright (c) 2003 The OpenSSL Project. All rights reserved.
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22  * "This product includes software developed by the OpenSSL Project
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53  * This product includes cryptographic software written by Eric Young
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58 
59 #include <ctype.h>
60 #include <e_os.h>
61 #include "o_str.h"
62 
63 #if !defined(OPENSSL_IMPLEMENTS_strncasecmp) && \
64  !defined(OPENSSL_SYSNAME_WIN32) && \
65  !defined(NETWARE_CLIB)
66 # include <strings.h>
67 #endif
68 
69 int OPENSSL_strncasecmp(const char *str1, const char *str2, size_t n)
70  {
71 #if defined(OPENSSL_IMPLEMENTS_strncasecmp)
72  while (*str1 && *str2 && n)
73  {
74  int res = toupper(*str1) - toupper(*str2);
75  if (res) return res < 0 ? -1 : 1;
76  str1++;
77  str2++;
78  n--;
79  }
80  if (n == 0)
81  return 0;
82  if (*str1)
83  return 1;
84  if (*str2)
85  return -1;
86  return 0;
87 #else
88  /* Recursion hazard warning! Whenever strncasecmp is #defined as
89  * OPENSSL_strncasecmp, OPENSSL_IMPLEMENTS_strncasecmp must be
90  * defined as well. */
91  return strncasecmp(str1, str2, n);
92 #endif
93  }
94 int OPENSSL_strcasecmp(const char *str1, const char *str2)
95  {
96 #if defined(OPENSSL_IMPLEMENTS_strncasecmp)
97  return OPENSSL_strncasecmp(str1, str2, (size_t)-1);
98 #else
99  return strcasecmp(str1, str2);
100 #endif
101  }
102 
103 int OPENSSL_memcmp(const void *v1,const void *v2,size_t n)
104  {
105  const unsigned char *c1=v1,*c2=v2;
106  int ret=0;
107 
108  while(n && (ret=*c1-*c2)==0) n--,c1++,c2++;
109 
110  return ret;
111  }