1/***************************************************************************
2 *                                  _   _ ____  _
3 *  Project                     ___| | | |  _ \| |
4 *                             / __| | | | |_) | |
5 *                            | (__| |_| |  _ <| |___
6 *                             \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2012, 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
38WINBASEAPI int WINAPI IdnToAscii(DWORD, const WCHAR *, int, WCHAR *, int);
39WINBASEAPI int WINAPI IdnToUnicode(DWORD, const WCHAR *, int, WCHAR *, int);
40#endif
41
42#define IDN_MAX_LENGTH 255
43
44int curl_win32_idn_to_ascii(const char *in, char **out);
45int curl_win32_ascii_to_idn(const char *in, size_t in_len, char **out_utf8);
46
47int curl_win32_idn_to_ascii(const char *in, char **out)
48{
49  wchar_t *in_w = Curl_convert_UTF8_to_wchar(in);
50  if(in_w) {
51    wchar_t punycode[IDN_MAX_LENGTH];
52    if(IdnToAscii(0, in_w, -1, punycode, IDN_MAX_LENGTH) == 0) {
53      wprintf(L"ERROR %d converting to Punycode\n", GetLastError());
54      free(in_w);
55      return 0;
56    }
57    free(in_w);
58
59    *out = Curl_convert_wchar_to_UTF8(punycode);
60    if(!*out)
61      return 0;
62  }
63  return 1;
64}
65
66int curl_win32_ascii_to_idn(const char *in, size_t in_len, char **out_utf8)
67{
68  (void)in_len; /* unused */
69  if(in) {
70    WCHAR unicode[IDN_MAX_LENGTH];
71
72    if(IdnToUnicode(0, (wchar_t *)in, -1, unicode, IDN_MAX_LENGTH) == 0) {
73      wprintf(L"ERROR %d converting to Punycode\n", GetLastError());
74      return 0;
75    }
76    else {
77      *out_utf8 = Curl_convert_wchar_to_UTF8(unicode);
78      if(!*out_utf8)
79        return 0;
80    }
81  }
82  return 1;
83}
84
85#endif /* USE_WIN32_IDN */
86