lib/libcrypto/compat/include/string.h

   1 /*
   2  * Public domain
   3  * string.h compatibility shim
   4  */
   5
   6 #ifndef LIBCRYPTOCOMPAT_STRING_H
   7 #define LIBCRYPTOCOMPAT_STRING_H
   8
   9 #ifdef _MSC_VER
  10 #if _MSC_VER >= 1900
  11 #include <../ucrt/string.h>
  12 #else
  13 #include <../include/string.h>
  14 #endif
  15 #else
  16 #include_next <string.h>
  17 #endif
  18
  19 #include <sys/types.h>
  20
  21 #if defined(__sun) || defined(_AIX) || defined(__hpux)
  22 /* Some functions historically defined in string.h were placed in strings.h by
  23  * SUS. Use the same hack as OS X and FreeBSD use to work around on AIX,
  24  * Solaris, and HPUX.
  25  */
  26 #include <strings.h>
  27 #endif
  28
  29 #ifndef HAVE_STRCASECMP
  30 int strcasecmp(const char *s1, const char *s2);
  31 int strncasecmp(const char *s1, const char *s2, size_t len);
  32 #endif
  33
  34 #ifndef HAVE_STRLCPY
  35 size_t strlcpy(char *dst, const char *src, size_t siz);
  36 #endif
  37
  38 #ifndef HAVE_STRLCAT
  39 size_t strlcat(char *dst, const char *src, size_t siz);
  40 #endif
  41
  42 #ifndef HAVE_STRNDUP
  43 char * strndup(const char *str, size_t maxlen);
  44 /* the only user of strnlen is strndup, so only build it if needed */
  45 #ifndef HAVE_STRNLEN
  46 size_t strnlen(const char *str, size_t maxlen);
  47 #endif
  48 #endif
  49
  50 #ifndef HAVE_STRSEP
  51 char *strsep(char **stringp, const char *delim);
  52 #endif
  53
  54 #ifndef HAVE_EXPLICIT_BZERO
  55 void explicit_bzero(void *, size_t);
  56 #endif
  57
  58 #ifndef HAVE_TIMINGSAFE_BCMP
  59 int timingsafe_bcmp(const void *b1, const void *b2, size_t n);
  60 #endif
  61
  62 #ifndef HAVE_TIMINGSAFE_MEMCMP
  63 int timingsafe_memcmp(const void *b1, const void *b2, size_t len);
  64 #endif
  65
  66 #ifndef HAVE_MEMMEM
  67 void * memmem(const void *big, size_t big_len, const void *little,
  68         size_t little_len);
  69 #endif
  70
  71 #ifdef _WIN32
  72 #include <errno.h>
  73
  74 static inline char  *
  75 posix_strerror(int errnum)
  76 {
  77         if (errnum == ECONNREFUSED) {
  78                 return "Connection refused";
  79         }
  80         return strerror(errnum);
  81 }
  82
  83 #define strerror(errnum) posix_strerror(errnum)
  84
  85 #endif
  86
  87 #endif