o_str.c 3.8 KB

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  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. #include <ctype.h>
  59. #include <e_os.h>
  60. #include "o_str.h"
  61. #if !defined(OPENSSL_IMPLEMENTS_strncasecmp) && !defined(OPENSSL_SYSNAME_WIN32)
  62. # include <strings.h>
  63. #endif
  64. int OPENSSL_strncasecmp(const char *str1, const char *str2, size_t n)
  65. {
  66. #if defined(OPENSSL_IMPLEMENTS_strncasecmp)
  67. while (*str1 && *str2 && n)
  68. {
  69. int res = toupper(*str1) - toupper(*str2);
  70. if (res) return res < 0 ? -1 : 1;
  71. str1++;
  72. str2++;
  73. n--;
  74. }
  75. if (n == 0)
  76. return 0;
  77. if (*str1)
  78. return 1;
  79. if (*str2)
  80. return -1;
  81. return 0;
  82. #else
  83. /* Recursion hazard warning! Whenever strncasecmp is #defined as
  84. * OPENSSL_strncasecmp, OPENSSL_IMPLEMENTS_strncasecmp must be
  85. * defined as well. */
  86. return strncasecmp(str1, str2, n);
  87. #endif
  88. }
  89. int OPENSSL_strcasecmp(const char *str1, const char *str2)
  90. {
  91. #if defined(OPENSSL_IMPLEMENTS_strncasecmp)
  92. return OPENSSL_strncasecmp(str1, str2, (size_t)-1);
  93. #else
  94. return strcasecmp(str1, str2);
  95. #endif
  96. }
  97. int OPENSSL_memcmp(const void *v1,const void *v2,size_t n)
  98. {
  99. const unsigned char *c1=v1,*c2=v2;
  100. int ret=0;
  101. while(n && (ret=*c1-*c2)==0) n--,c1++,c2++;
  102. return ret;
  103. }