mirror of
https://github.com/lammertb/libhttp.git
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153 lines
3.8 KiB
C
153 lines
3.8 KiB
C
/*
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* Copyright (c) 2016 Lammert Bies
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* Copyright (c) 2013-2016 the Civetweb developers
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* Copyright (c) 2004-2013 Sergey Lyubka
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* ============
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* Release: 2.0
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*/
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#include "httplib_main.h"
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#include "httplib_string.h"
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#if defined(_WIN32)
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/*
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* For Windows, change all slashes to backslashes in path names.
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*/
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static void change_slashes_to_backslashes( char *path ) {
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int i;
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for (i = 0; path[i] != '\0'; i++) {
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if (path[i] == '/') path[i] = '\\';
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/*
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* remove double backslash (check i > 0 to preserve UNC paths,
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* like \\server\file.txt)
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*/
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if ( path[i] == '\\' && i > 0 ) {
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while ( path[i+1] == '\\' || path[i+1] == '/' ) memmove( path+i+1, path+i+2, strlen( path+i+1 ) );
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}
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}
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} /* change_slashes_to_backslashes */
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static int httplib_wcscasecmp( const wchar_t *s1, const wchar_t *s2 ) {
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int diff;
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do {
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diff = tolower(*s1) - tolower(*s2);
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s1++;
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s2++;
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} while ( diff == 0 && s1[-1] != '\0' );
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return diff;
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} /* httplib_wcscasecmp */
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/* Encode 'path' which is assumed UTF-8 string, into UNICODE string.
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* wbuf and wbuf_len is a target buffer and its length. */
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void XX_httplib_path_to_unicode( const char *path, wchar_t *wbuf, size_t wbuf_len ) {
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char buf[PATH_MAX];
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char buf2[PATH_MAX];
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wchar_t wbuf2[MAX_PATH + 1];
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DWORD long_len;
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DWORD err;
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int (*fcompare)(const wchar_t *, const wchar_t *) = httplib_wcscasecmp;
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httplib_strlcpy( buf, path, sizeof(buf) );
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change_slashes_to_backslashes( buf );
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/*
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* Convert to Unicode and back. If doubly-converted string does not
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* match the original, something is fishy, reject.
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*/
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memset( wbuf, 0, wbuf_len * sizeof(wchar_t) );
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MultiByteToWideChar( CP_UTF8, 0, buf, -1, wbuf, (int)wbuf_len );
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WideCharToMultiByte( CP_UTF8, 0, wbuf, (int)wbuf_len, buf2, sizeof(buf2), NULL, NULL );
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if ( strcmp(buf, buf2) != 0 ) wbuf[0] = L'\0';
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/*
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* TODO: Add a configuration to switch between case sensitive and
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* case insensitive URIs for Windows server.
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*/
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/*
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if ( ctx != NULL ) {
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if (ctx->config[WINDOWS_CASE_SENSITIVE]) {
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fcompare = wcscmp;
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}
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}
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*/
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#if !defined(_WIN32_WCE)
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/*
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* Only accept a full file path, not a Windows short (8.3) path.
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*/
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memset( wbuf2, 0, ARRAY_SIZE(wbuf2) * sizeof(wchar_t) );
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long_len = GetLongPathNameW( wbuf, wbuf2, ARRAY_SIZE(wbuf2) - 1 );
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if ( long_len == 0 ) {
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err = GetLastError();
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if ( err == ERROR_FILE_NOT_FOUND ) {
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/*
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* File does not exist. This is not always a problem here.
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*/
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return;
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}
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}
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if ( long_len >= ARRAY_SIZE(wbuf2) || fcompare( wbuf, wbuf2 ) != 0 ) {
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/*
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* Short name is used.
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*/
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wbuf[0] = L'\0';
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}
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#else
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UNUSED_PARAMETER(long_len);
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UNUSED_PARAMETER(wbuf2);
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UNUSED_PARAMETER(err);
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if ( strchr( path, '~' ) ) wbuf[0] = L'\0';
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#endif
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} /* XX_httplib_path_to_unicode */
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#endif /* _WIN32 */
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