dlls/dnsapi/dnsapi.h

   1 /*
   2  * DNS support
   3  *
   4  * Copyright 2006 Hans Leidekker
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21
  22 static inline void *heap_alloc( SIZE_T size )
  23 {
  24     return HeapAlloc( GetProcessHeap(), 0, size );
  25 }
  26
  27 static inline void *heap_alloc_zero( SIZE_T size )
  28 {
  29     return HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size );
  30 }
  31
  32 static inline BOOL heap_free( LPVOID mem )
  33 {
  34     return HeapFree( GetProcessHeap(), 0, mem );
  35 }
  36
  37 static inline LPSTR dns_strdup_a( LPCSTR src )
  38 {
  39     LPSTR dst;
  40
  41     if (!src) return NULL;
  42     dst = heap_alloc( (lstrlenA( src ) + 1) * sizeof(char) );
  43     if (dst) lstrcpyA( dst, src );
  44     return dst;
  45 }
  46
  47 static inline char *dns_strdup_u( const char *src )
  48 {
  49     char *dst;
  50
  51     if (!src) return NULL;
  52     dst = heap_alloc( (strlen( src ) + 1) * sizeof(char) );
  53     if (dst) strcpy( dst, src );
  54     return dst;
  55 }
  56
  57 static inline LPWSTR dns_strdup_w( LPCWSTR src )
  58 {
  59     LPWSTR dst;
  60
  61     if (!src) return NULL;
  62     dst = heap_alloc( (lstrlenW( src ) + 1) * sizeof(WCHAR) );
  63     if (dst) lstrcpyW( dst, src );
  64     return dst;
  65 }
  66
  67 static inline LPWSTR dns_strdup_aw( LPCSTR str )
  68 {
  69     LPWSTR ret = NULL;
  70     if (str)
  71     {
  72         DWORD len = MultiByteToWideChar( CP_ACP, 0, str, -1, NULL, 0 );
  73         if ((ret = heap_alloc( len * sizeof(WCHAR) )))
  74             MultiByteToWideChar( CP_ACP, 0, str, -1, ret, len );
  75     }
  76     return ret;
  77 }
  78
  79 static inline LPWSTR dns_strdup_uw( const char *str )
  80 {
  81     LPWSTR ret = NULL;
  82     if (str)
  83     {
  84         DWORD len = MultiByteToWideChar( CP_UTF8, 0, str, -1, NULL, 0 );
  85         if ((ret = heap_alloc( len * sizeof(WCHAR) )))
  86             MultiByteToWideChar( CP_UTF8, 0, str, -1, ret, len );
  87     }
  88     return ret;
  89 }
  90
  91 static inline LPSTR dns_strdup_wa( LPCWSTR str )
  92 {
  93     LPSTR ret = NULL;
  94     if (str)
  95     {
  96         DWORD len = WideCharToMultiByte( CP_ACP, 0, str, -1, NULL, 0, NULL, NULL );
  97         if ((ret = heap_alloc( len )))
  98             WideCharToMultiByte( CP_ACP, 0, str, -1, ret, len, NULL, NULL );
  99     }
 100     return ret;
 101 }
 102
 103 static inline char *dns_strdup_wu( LPCWSTR str )
 104 {
 105     LPSTR ret = NULL;
 106     if (str)
 107     {
 108         DWORD len = WideCharToMultiByte( CP_UTF8, 0, str, -1, NULL, 0, NULL, NULL );
 109         if ((ret = heap_alloc( len )))
 110             WideCharToMultiByte( CP_UTF8, 0, str, -1, ret, len, NULL, NULL );
 111     }
 112     return ret;
 113 }
 114
 115 static inline char *dns_strdup_au( LPCSTR src )
 116 {
 117     char *dst = NULL;
 118     LPWSTR ret = dns_strdup_aw( src );
 119
 120     if (ret)
 121     {
 122         dst = dns_strdup_wu( ret );
 123         heap_free( ret );
 124     }
 125     return dst;
 126 }
 127
 128 static inline LPSTR dns_strdup_ua( const char *src )
 129 {
 130     LPSTR dst = NULL;
 131     LPWSTR ret = dns_strdup_uw( src );
 132
 133     if (ret)
 134     {
 135         dst = dns_strdup_wa( ret );
 136         heap_free( ret );
 137     }
 138     return dst;
 139 }
 140
 141 const char *dns_type_to_str( unsigned short );
 142
 143 int dns_ns_initparse( const u_char *, int, ns_msg * );
 144 int dns_ns_parserr( ns_msg *, ns_sect, int, ns_rr * );
 145 int dns_ns_name_skip( const u_char **, const u_char * );
 146 int dns_ns_name_uncompress( const u_char *, const u_char *, const u_char *, char *, size_t );