1/***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2016, 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 https://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#include "curl_memory.h"
33#include "warnless.h"
34
35 /* The last #include file should be: */
36#include "memdebug.h"
37
38#ifdef WANT_IDN_PROTOTYPES
39# if defined(_SAL_VERSION)
40WINNORMALIZEAPI int WINAPI
41IdnToAscii(_In_ DWORD dwFlags,
42 _In_reads_(cchUnicodeChar) LPCWSTR lpUnicodeCharStr,
43 _In_ int cchUnicodeChar,
44 _Out_writes_opt_(cchASCIIChar) LPWSTR lpASCIICharStr,
45 _In_ int cchASCIIChar);
46WINNORMALIZEAPI int WINAPI
47IdnToUnicode(_In_ DWORD dwFlags,
48 _In_reads_(cchASCIIChar) LPCWSTR lpASCIICharStr,
49 _In_ int cchASCIIChar,
50 _Out_writes_opt_(cchUnicodeChar) LPWSTR lpUnicodeCharStr,
51 _In_ int cchUnicodeChar);
52# else
53WINBASEAPI int WINAPI IdnToAscii(DWORD dwFlags,
54 const WCHAR *lpUnicodeCharStr,
55 int cchUnicodeChar,
56 WCHAR *lpASCIICharStr,
57 int cchASCIIChar);
58WINBASEAPI int WINAPI IdnToUnicode(DWORD dwFlags,
59 const WCHAR *lpASCIICharStr,
60 int cchASCIIChar,
61 WCHAR *lpUnicodeCharStr,
62 int cchUnicodeChar);
63# endif
64#endif
65
66#define IDN_MAX_LENGTH 255
67
68bool curl_win32_idn_to_ascii(const char *in, char **out);
69bool curl_win32_ascii_to_idn(const char *in, char **out);
70
71bool curl_win32_idn_to_ascii(const char *in, char **out)
72{
73 bool success = FALSE;
74
75 wchar_t *in_w = Curl_convert_UTF8_to_wchar(in);
76 if(in_w) {
77 wchar_t punycode[IDN_MAX_LENGTH];
78 int chars = IdnToAscii(0, in_w, -1, punycode, IDN_MAX_LENGTH);
79 free(in_w);
80 if(chars) {
81 *out = Curl_convert_wchar_to_UTF8(punycode);
82 if(*out)
83 success = TRUE;
84 }
85 }
86
87 return success;
88}
89
90bool curl_win32_ascii_to_idn(const char *in, char **out)
91{
92 bool success = FALSE;
93
94 wchar_t *in_w = Curl_convert_UTF8_to_wchar(in);
95 if(in_w) {
96 size_t in_len = wcslen(in_w) + 1;
97 wchar_t unicode[IDN_MAX_LENGTH];
98 int chars = IdnToUnicode(0, in_w, curlx_uztosi(in_len),
99 unicode, IDN_MAX_LENGTH);
100 free(in_w);
101 if(chars) {
102 *out = Curl_convert_wchar_to_UTF8(unicode);
103 if(*out)
104 success = TRUE;
105 }
106 }
107
108 return success;
109}
110
111#endif /* USE_WIN32_IDN */
112