| 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 2016 - 2017, Steve Holme, <steve_holme@hotmail.com>.
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| 9 | *
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| 10 | * This software is licensed as described in the file COPYING, which
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| 11 | * you should have received as part of this distribution. The terms
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| 12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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| 13 | *
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| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 15 | * copies of the Software, and permit persons to whom the Software is
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| 16 | * furnished to do so, under the terms of the COPYING file.
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| 17 | *
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| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 19 | * KIND, either express or implied.
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| 20 | *
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| 21 | ***************************************************************************/
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| 22 |
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| 23 | #include "curl_setup.h"
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| 24 |
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| 25 | #if defined(WIN32)
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| 26 |
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| 27 | #include <curl/curl.h>
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| 28 | #include "system_win32.h"
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| 29 | #include "warnless.h"
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| 30 |
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| 31 | /* The last #include files should be: */
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| 32 | #include "curl_memory.h"
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| 33 | #include "memdebug.h"
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| 34 |
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| 35 | #if defined(USE_WINDOWS_SSPI) || (!defined(CURL_DISABLE_TELNET) && \
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| 36 | defined(USE_WINSOCK))
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| 37 |
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| 38 |
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| 39 | #if !defined(LOAD_WITH_ALTERED_SEARCH_PATH)
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| 40 | #define LOAD_WITH_ALTERED_SEARCH_PATH 0x00000008
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| 41 | #endif
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| 42 |
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| 43 | #if !defined(LOAD_LIBRARY_SEARCH_SYSTEM32)
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| 44 | #define LOAD_LIBRARY_SEARCH_SYSTEM32 0x00000800
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| 45 | #endif
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| 46 |
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| 47 | /* We use our own typedef here since some headers might lack these */
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| 48 | typedef HMODULE (APIENTRY *LOADLIBRARYEX_FN)(LPCTSTR, HANDLE, DWORD);
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| 49 |
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| 50 | /* See function definitions in winbase.h */
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| 51 | #ifdef UNICODE
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| 52 | # ifdef _WIN32_WCE
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| 53 | # define LOADLIBARYEX L"LoadLibraryExW"
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| 54 | # else
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| 55 | # define LOADLIBARYEX "LoadLibraryExW"
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| 56 | # endif
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| 57 | #else
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| 58 | # define LOADLIBARYEX "LoadLibraryExA"
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| 59 | #endif
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| 60 |
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| 61 | #endif /* USE_WINDOWS_SSPI || (!CURL_DISABLE_TELNET && USE_WINSOCK) */
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| 62 |
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| 63 | /*
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| 64 | * Curl_verify_windows_version()
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| 65 | *
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| 66 | * This is used to verify if we are running on a specific windows version.
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| 67 | *
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| 68 | * Parameters:
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| 69 | *
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| 70 | * majorVersion [in] - The major version number.
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| 71 | * minorVersion [in] - The minor version number.
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| 72 | * platform [in] - The optional platform identifier.
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| 73 | * condition [in] - The test condition used to specifier whether we are
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| 74 | * checking a version less then, equal to or greater than
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| 75 | * what is specified in the major and minor version
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| 76 | * numbers.
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| 77 | *
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| 78 | * Returns TRUE if matched; otherwise FALSE.
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| 79 | */
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| 80 | bool Curl_verify_windows_version(const unsigned int majorVersion,
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| 81 | const unsigned int minorVersion,
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| 82 | const PlatformIdentifier platform,
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| 83 | const VersionCondition condition)
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| 84 | {
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| 85 | bool matched = FALSE;
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| 86 |
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| 87 | #if defined(CURL_WINDOWS_APP)
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| 88 | /* We have no way to determine the Windows version from Windows apps,
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| 89 | so let's assume we're running on the target Windows version. */
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| 90 | const WORD fullVersion = MAKEWORD(minorVersion, majorVersion);
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| 91 | const WORD targetVersion = (WORD)_WIN32_WINNT;
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| 92 |
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| 93 | switch(condition) {
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| 94 | case VERSION_LESS_THAN:
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| 95 | matched = targetVersion < fullVersion;
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| 96 | break;
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| 97 |
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| 98 | case VERSION_LESS_THAN_EQUAL:
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| 99 | matched = targetVersion <= fullVersion;
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| 100 | break;
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| 101 |
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| 102 | case VERSION_EQUAL:
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| 103 | matched = targetVersion == fullVersion;
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| 104 | break;
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| 105 |
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| 106 | case VERSION_GREATER_THAN_EQUAL:
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| 107 | matched = targetVersion >= fullVersion;
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| 108 | break;
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| 109 |
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| 110 | case VERSION_GREATER_THAN:
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| 111 | matched = targetVersion > fullVersion;
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| 112 | break;
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| 113 | }
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| 114 |
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| 115 | if(matched && (platform == PLATFORM_WINDOWS)) {
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| 116 | /* we're always running on PLATFORM_WINNT */
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| 117 | matched = FALSE;
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| 118 | }
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| 119 | #elif !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_WIN2K) || \
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| 120 | (_WIN32_WINNT < _WIN32_WINNT_WIN2K)
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| 121 | OSVERSIONINFO osver;
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| 122 |
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| 123 | memset(&osver, 0, sizeof(osver));
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| 124 | osver.dwOSVersionInfoSize = sizeof(osver);
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| 125 |
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| 126 | /* Find out Windows version */
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| 127 | if(GetVersionEx(&osver)) {
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| 128 | /* Verify the Operating System version number */
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| 129 | switch(condition) {
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| 130 | case VERSION_LESS_THAN:
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| 131 | if(osver.dwMajorVersion < majorVersion ||
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| 132 | (osver.dwMajorVersion == majorVersion &&
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| 133 | osver.dwMinorVersion < minorVersion))
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| 134 | matched = TRUE;
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| 135 | break;
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| 136 |
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| 137 | case VERSION_LESS_THAN_EQUAL:
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| 138 | if(osver.dwMajorVersion < majorVersion ||
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| 139 | (osver.dwMajorVersion == majorVersion &&
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| 140 | osver.dwMinorVersion <= minorVersion))
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| 141 | matched = TRUE;
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| 142 | break;
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| 143 |
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| 144 | case VERSION_EQUAL:
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| 145 | if(osver.dwMajorVersion == majorVersion &&
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| 146 | osver.dwMinorVersion == minorVersion)
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| 147 | matched = TRUE;
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| 148 | break;
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| 149 |
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| 150 | case VERSION_GREATER_THAN_EQUAL:
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| 151 | if(osver.dwMajorVersion > majorVersion ||
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| 152 | (osver.dwMajorVersion == majorVersion &&
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| 153 | osver.dwMinorVersion >= minorVersion))
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| 154 | matched = TRUE;
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| 155 | break;
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| 156 |
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| 157 | case VERSION_GREATER_THAN:
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| 158 | if(osver.dwMajorVersion > majorVersion ||
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| 159 | (osver.dwMajorVersion == majorVersion &&
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| 160 | osver.dwMinorVersion > minorVersion))
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| 161 | matched = TRUE;
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| 162 | break;
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| 163 | }
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| 164 |
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| 165 | /* Verify the platform identifier (if necessary) */
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| 166 | if(matched) {
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| 167 | switch(platform) {
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| 168 | case PLATFORM_WINDOWS:
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| 169 | if(osver.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS)
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| 170 | matched = FALSE;
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| 171 | break;
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| 172 |
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| 173 | case PLATFORM_WINNT:
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| 174 | if(osver.dwPlatformId != VER_PLATFORM_WIN32_NT)
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| 175 | matched = FALSE;
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| 176 |
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| 177 | default: /* like platform == PLATFORM_DONT_CARE */
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| 178 | break;
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| 179 | }
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| 180 | }
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| 181 | }
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| 182 | #else
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| 183 | ULONGLONG cm = 0;
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| 184 | OSVERSIONINFOEX osver;
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| 185 | BYTE majorCondition;
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| 186 | BYTE minorCondition;
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| 187 | BYTE spMajorCondition;
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| 188 | BYTE spMinorCondition;
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| 189 |
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| 190 | switch(condition) {
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| 191 | case VERSION_LESS_THAN:
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| 192 | majorCondition = VER_LESS;
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| 193 | minorCondition = VER_LESS;
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| 194 | spMajorCondition = VER_LESS_EQUAL;
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| 195 | spMinorCondition = VER_LESS_EQUAL;
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| 196 | break;
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| 197 |
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| 198 | case VERSION_LESS_THAN_EQUAL:
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| 199 | majorCondition = VER_LESS_EQUAL;
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| 200 | minorCondition = VER_LESS_EQUAL;
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| 201 | spMajorCondition = VER_LESS_EQUAL;
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| 202 | spMinorCondition = VER_LESS_EQUAL;
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| 203 | break;
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| 204 |
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| 205 | case VERSION_EQUAL:
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| 206 | majorCondition = VER_EQUAL;
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| 207 | minorCondition = VER_EQUAL;
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| 208 | spMajorCondition = VER_GREATER_EQUAL;
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| 209 | spMinorCondition = VER_GREATER_EQUAL;
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| 210 | break;
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| 211 |
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| 212 | case VERSION_GREATER_THAN_EQUAL:
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| 213 | majorCondition = VER_GREATER_EQUAL;
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| 214 | minorCondition = VER_GREATER_EQUAL;
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| 215 | spMajorCondition = VER_GREATER_EQUAL;
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| 216 | spMinorCondition = VER_GREATER_EQUAL;
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| 217 | break;
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| 218 |
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| 219 | case VERSION_GREATER_THAN:
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| 220 | majorCondition = VER_GREATER;
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| 221 | minorCondition = VER_GREATER;
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| 222 | spMajorCondition = VER_GREATER_EQUAL;
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| 223 | spMinorCondition = VER_GREATER_EQUAL;
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| 224 | break;
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| 225 |
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| 226 | default:
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| 227 | return FALSE;
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| 228 | }
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| 229 |
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| 230 | memset(&osver, 0, sizeof(osver));
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| 231 | osver.dwOSVersionInfoSize = sizeof(osver);
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| 232 | osver.dwMajorVersion = majorVersion;
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| 233 | osver.dwMinorVersion = minorVersion;
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| 234 | if(platform == PLATFORM_WINDOWS)
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| 235 | osver.dwPlatformId = VER_PLATFORM_WIN32_WINDOWS;
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| 236 | else if(platform == PLATFORM_WINNT)
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| 237 | osver.dwPlatformId = VER_PLATFORM_WIN32_NT;
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| 238 |
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| 239 | cm = VerSetConditionMask(cm, VER_MAJORVERSION, majorCondition);
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| 240 | cm = VerSetConditionMask(cm, VER_MINORVERSION, minorCondition);
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| 241 | cm = VerSetConditionMask(cm, VER_SERVICEPACKMAJOR, spMajorCondition);
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| 242 | cm = VerSetConditionMask(cm, VER_SERVICEPACKMINOR, spMinorCondition);
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| 243 | if(platform != PLATFORM_DONT_CARE)
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| 244 | cm = VerSetConditionMask(cm, VER_PLATFORMID, VER_EQUAL);
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| 245 |
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| 246 | if(VerifyVersionInfo(&osver, (VER_MAJORVERSION | VER_MINORVERSION |
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| 247 | VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR),
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| 248 | cm))
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| 249 | matched = TRUE;
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| 250 | #endif
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| 251 |
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| 252 | return matched;
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| 253 | }
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| 254 |
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| 255 | #if defined(USE_WINDOWS_SSPI) || (!defined(CURL_DISABLE_TELNET) && \
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| 256 | defined(USE_WINSOCK))
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| 257 |
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| 258 | /*
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| 259 | * Curl_load_library()
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| 260 | *
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| 261 | * This is used to dynamically load DLLs using the most secure method available
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| 262 | * for the version of Windows that we are running on.
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| 263 | *
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| 264 | * Parameters:
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| 265 | *
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| 266 | * filename [in] - The filename or full path of the DLL to load. If only the
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| 267 | * filename is passed then the DLL will be loaded from the
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| 268 | * Windows system directory.
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| 269 | *
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| 270 | * Returns the handle of the module on success; otherwise NULL.
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| 271 | */
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| 272 | HMODULE Curl_load_library(LPCTSTR filename)
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| 273 | {
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| 274 | HMODULE hModule = NULL;
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| 275 | LOADLIBRARYEX_FN pLoadLibraryEx = NULL;
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| 276 |
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| 277 | /* Get a handle to kernel32 so we can access it's functions at runtime */
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| 278 | HMODULE hKernel32 = GetModuleHandle(TEXT("kernel32"));
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| 279 | if(!hKernel32)
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| 280 | return NULL;
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| 281 |
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| 282 | /* Attempt to find LoadLibraryEx() which is only available on Windows 2000
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| 283 | and above */
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| 284 | pLoadLibraryEx =
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| 285 | CURLX_FUNCTION_CAST(LOADLIBRARYEX_FN,
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| 286 | (GetProcAddress(hKernel32, LOADLIBARYEX)));
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| 287 |
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| 288 | /* Detect if there's already a path in the filename and load the library if
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| 289 | there is. Note: Both back slashes and forward slashes have been supported
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| 290 | since the earlier days of DOS at an API level although they are not
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| 291 | supported by command prompt */
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| 292 | if(_tcspbrk(filename, TEXT("\\/"))) {
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| 293 | /** !checksrc! disable BANNEDFUNC 1 **/
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| 294 | hModule = pLoadLibraryEx ?
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| 295 | pLoadLibraryEx(filename, NULL, LOAD_WITH_ALTERED_SEARCH_PATH) :
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| 296 | LoadLibrary(filename);
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| 297 | }
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| 298 | /* Detect if KB2533623 is installed, as LOAD_LIBARY_SEARCH_SYSTEM32 is only
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| 299 | supported on Windows Vista, Windows Server 2008, Windows 7 and Windows
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| 300 | Server 2008 R2 with this patch or natively on Windows 8 and above */
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| 301 | else if(pLoadLibraryEx && GetProcAddress(hKernel32, "AddDllDirectory")) {
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| 302 | /* Load the DLL from the Windows system directory */
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| 303 | hModule = pLoadLibraryEx(filename, NULL, LOAD_LIBRARY_SEARCH_SYSTEM32);
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| 304 | }
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| 305 | else {
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| 306 | /* Attempt to get the Windows system path */
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| 307 | UINT systemdirlen = GetSystemDirectory(NULL, 0);
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| 308 | if(systemdirlen) {
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| 309 | /* Allocate space for the full DLL path (Room for the null terminator
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| 310 | is included in systemdirlen) */
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| 311 | size_t filenamelen = _tcslen(filename);
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| 312 | TCHAR *path = malloc(sizeof(TCHAR) * (systemdirlen + 1 + filenamelen));
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| 313 | if(path && GetSystemDirectory(path, systemdirlen)) {
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| 314 | /* Calculate the full DLL path */
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| 315 | _tcscpy(path + _tcslen(path), TEXT("\\"));
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| 316 | _tcscpy(path + _tcslen(path), filename);
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| 317 |
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| 318 | /* Load the DLL from the Windows system directory */
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| 319 | /** !checksrc! disable BANNEDFUNC 1 **/
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| 320 | hModule = pLoadLibraryEx ?
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| 321 | pLoadLibraryEx(path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH) :
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| 322 | LoadLibrary(path);
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| 323 |
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| 324 | }
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| 325 | free(path);
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| 326 | }
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| 327 | }
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| 328 |
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| 329 | return hModule;
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| 330 | }
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| 331 |
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| 332 | #endif /* USE_WINDOWS_SSPI || (!CURL_DISABLE_TELNET && USE_WINSOCK) */
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| 333 |
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| 334 | #endif /* WIN32 */
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