aboutsummaryrefslogtreecommitdiff
path: root/lib/curl_sspi.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/curl_sspi.c')
-rw-r--r--lib/curl_sspi.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/lib/curl_sspi.c b/lib/curl_sspi.c
new file mode 100644
index 000000000..36a498e53
--- /dev/null
+++ b/lib/curl_sspi.c
@@ -0,0 +1,119 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * $Id$
+ ***************************************************************************/
+
+#include "setup.h"
+
+#ifdef USE_WINDOWS_SSPI
+
+#include <curl/curl.h>
+
+#include "curl_sspi.h"
+
+#define _MPRINTF_REPLACE /* use our functions only */
+#include <curl/mprintf.h>
+
+#include "memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
+
+/* Handle of security.dll or secur32.dll, depending on Windows version */
+HMODULE s_hSecDll = NULL;
+
+/* Pointer to SSPI dispatch table */
+PSecurityFunctionTableA s_pSecFn = NULL;
+
+
+/*
+ * Curl_sspi_global_init()
+ *
+ * This is used to load the Security Service Provider Interface (SSPI)
+ * dynamic link library portably across all Windows versions, without
+ * the need to directly link libcurl, nor the application using it, at
+ * build time.
+ *
+ * Once this function has been execured, Windows SSPI functions can be
+ * called through the Security Service Provider Interface dispatch table.
+ */
+
+CURLcode
+Curl_sspi_global_init(void)
+{
+ OSVERSIONINFO osver;
+ INIT_SECURITY_INTERFACE_A pInitSecurityInterface;
+
+ /* If security interface is not yet initialized try to do this */
+ if(s_hSecDll == NULL) {
+
+ /* Find out Windows version */
+ memset(&osver, 0, sizeof(osver));
+ osver.dwOSVersionInfoSize = sizeof(osver);
+ if(! GetVersionEx(&osver))
+ return CURLE_FAILED_INIT;
+
+ /* Security Service Provider Interface (SSPI) functions are located in
+ * security.dll on WinNT 4.0 and in secur32.dll on Win9x. Win2K and XP
+ * have both these DLLs (security.dll forwards calls to secur32.dll) */
+
+ /* Load SSPI dll into the address space of the calling process */
+ if(osver.dwPlatformId == VER_PLATFORM_WIN32_NT
+ && osver.dwMajorVersion == 4)
+ s_hSecDll = LoadLibrary("security.dll");
+ else
+ s_hSecDll = LoadLibrary("secur32.dll");
+ if(! s_hSecDll)
+ return CURLE_FAILED_INIT;
+
+ /* Get address of the InitSecurityInterfaceA function from the SSPI dll */
+ pInitSecurityInterface = (INIT_SECURITY_INTERFACE_A)
+ GetProcAddress(s_hSecDll, "InitSecurityInterfaceA");
+ if(! pInitSecurityInterface)
+ return CURLE_FAILED_INIT;
+
+ /* Get pointer to Security Service Provider Interface dispatch table */
+ s_pSecFn = pInitSecurityInterface();
+ if(! s_pSecFn)
+ return CURLE_FAILED_INIT;
+
+ }
+ return CURLE_OK;
+}
+
+
+/*
+ * Curl_sspi_global_cleanup()
+ *
+ * This deinitializes the Security Service Provider Interface from libcurl.
+ */
+
+void
+Curl_sspi_global_cleanup(void)
+{
+ if(s_hSecDll) {
+ FreeLibrary(s_hSecDll);
+ s_hSecDll = NULL;
+ s_pSecFn = NULL;
+ }
+}
+
+#endif /* USE_WINDOWS_SSPI */