1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
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.
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.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
25 #ifdef USE_WINDOWS_SSPI
27 #include <curl/curl.h>
29 #include "curl_sspi.h"
31 #define _MPRINTF_REPLACE /* use our functions only */
32 #include <curl/mprintf.h>
34 #include "curl_memory.h"
35 /* The last #include file should be: */
39 /* We use our own typedef here since some headers might lack these */
40 typedef PSecurityFunctionTableA (APIENTRY *INITSECURITYINTERFACE_FN_A)(VOID);
42 /* Handle of security.dll or secur32.dll, depending on Windows version */
43 HMODULE s_hSecDll = NULL;
45 /* Pointer to SSPI dispatch table */
46 PSecurityFunctionTableA s_pSecFn = NULL;
50 * Curl_sspi_global_init()
52 * This is used to load the Security Service Provider Interface (SSPI)
53 * dynamic link library portably across all Windows versions, without
54 * the need to directly link libcurl, nor the application using it, at
57 * Once this function has been executed, Windows SSPI functions can be
58 * called through the Security Service Provider Interface dispatch table.
62 Curl_sspi_global_init(void)
65 INITSECURITYINTERFACE_FN_A pInitSecurityInterface;
67 /* If security interface is not yet initialized try to do this */
68 if(s_hSecDll == NULL) {
70 /* Find out Windows version */
71 memset(&osver, 0, sizeof(osver));
72 osver.dwOSVersionInfoSize = sizeof(osver);
73 if(! GetVersionEx(&osver))
74 return CURLE_FAILED_INIT;
76 /* Security Service Provider Interface (SSPI) functions are located in
77 * security.dll on WinNT 4.0 and in secur32.dll on Win9x. Win2K and XP
78 * have both these DLLs (security.dll forwards calls to secur32.dll) */
80 /* Load SSPI dll into the address space of the calling process */
81 if(osver.dwPlatformId == VER_PLATFORM_WIN32_NT
82 && osver.dwMajorVersion == 4)
83 s_hSecDll = LoadLibrary("security.dll");
85 s_hSecDll = LoadLibrary("secur32.dll");
87 return CURLE_FAILED_INIT;
89 /* Get address of the InitSecurityInterfaceA function from the SSPI dll */
90 pInitSecurityInterface = (INITSECURITYINTERFACE_FN_A)
91 GetProcAddress(s_hSecDll, "InitSecurityInterfaceA");
92 if(! pInitSecurityInterface)
93 return CURLE_FAILED_INIT;
95 /* Get pointer to Security Service Provider Interface dispatch table */
96 s_pSecFn = pInitSecurityInterface();
98 return CURLE_FAILED_INIT;
106 * Curl_sspi_global_cleanup()
108 * This deinitializes the Security Service Provider Interface from libcurl.
112 Curl_sspi_global_cleanup(void)
115 FreeLibrary(s_hSecDll);
121 #endif /* USE_WINDOWS_SSPI */