lib/idn_win32.c

   1 /***************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
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   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
   9  *
  10  * This software is licensed as described in the file COPYING, which
  11  * you should have received as part of this distribution. The terms
  12  * are also available at http://curl.haxx.se/docs/copyright.html.
  13  *
  14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  15  * copies of the Software, and permit persons to whom the Software is
  16  * furnished to do so, under the terms of the COPYING file.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  ***************************************************************************/
  22
  23  /*
  24   * IDN conversions using Windows kernel32 and normaliz libraries.
  25   */
  26
  27 #include "curl_setup.h"
  28
  29 #ifdef USE_WIN32_IDN
  30
  31 #include "curl_multibyte.h"
  32
  33 #include "curl_memory.h"
  34 /* The last #include file should be: */
  35 #include "memdebug.h"
  36
  37 #ifdef WANT_IDN_PROTOTYPES
  38 #  if defined(_SAL_VERSION)
  39 WINNORMALIZEAPI int WINAPI
  40 IdnToAscii(_In_                           DWORD    dwFlags,
  41            _In_reads_(cchUnicodeChar)     LPCWSTR  lpUnicodeCharStr,
  42            _In_                           int      cchUnicodeChar,
  43            _Out_writes_opt_(cchASCIIChar) LPWSTR   lpASCIICharStr,
  44            _In_                           int      cchASCIIChar);
  45 WINNORMALIZEAPI int WINAPI
  46 IdnToUnicode(_In_                             DWORD   dwFlags,
  47              _In_reads_(cchASCIIChar)         LPCWSTR lpASCIICharStr,
  48              _In_                             int     cchASCIIChar,
  49              _Out_writes_opt_(cchUnicodeChar) LPWSTR  lpUnicodeCharStr,
  50              _In_                             int     cchUnicodeChar);
  51 #  else
  52 WINBASEAPI int WINAPI IdnToAscii(DWORD dwFlags,
  53                                  const WCHAR *lpUnicodeCharStr,
  54                                  int cchUnicodeChar,
  55                                  WCHAR *lpASCIICharStr,
  56                                  int cchASCIIChar);
  57 WINBASEAPI int WINAPI IdnToUnicode(DWORD dwFlags,
  58                                    const WCHAR *lpASCIICharStr,
  59                                    int cchASCIIChar,
  60                                    WCHAR *lpUnicodeCharStr,
  61                                    int cchUnicodeChar);
  62 #  endif
  63 #endif
  64
  65 #define IDN_MAX_LENGTH 255
  66
  67 int curl_win32_idn_to_ascii(const char *in, char **out);
  68 int curl_win32_ascii_to_idn(const char *in, size_t in_len, char **out_utf8);
  69
  70 int curl_win32_idn_to_ascii(const char *in, char **out)
  71 {
  72   wchar_t *in_w = Curl_convert_UTF8_to_wchar(in);
  73   if(in_w) {
  74     wchar_t punycode[IDN_MAX_LENGTH];
  75     if(IdnToAscii(0, in_w, -1, punycode, IDN_MAX_LENGTH) == 0) {
  76       wprintf(L"ERROR %d converting to Punycode\n", GetLastError());
  77       free(in_w);
  78       return 0;
  79     }
  80     free(in_w);
  81
  82     *out = Curl_convert_wchar_to_UTF8(punycode);
  83     if(!*out)
  84       return 0;
  85   }
  86   return 1;
  87 }
  88
  89 int curl_win32_ascii_to_idn(const char *in, size_t in_len, char **out_utf8)
  90 {
  91   (void)in_len; /* unused */
  92   if(in) {
  93     WCHAR unicode[IDN_MAX_LENGTH];
  94
  95     if(IdnToUnicode(0, (wchar_t *)in, -1, unicode, IDN_MAX_LENGTH) == 0) {
  96       wprintf(L"ERROR %d converting to Punycode\n", GetLastError());
  97       return 0;
  98     }
  99     else {
 100       *out_utf8 = Curl_convert_wchar_to_UTF8(unicode);
 101       if(!*out_utf8)
 102         return 0;
 103     }
 104   }
 105   return 1;
 106 }
 107
 108 #endif /* USE_WIN32_IDN */