1142 lines
36 KiB
C
1142 lines
36 KiB
C
/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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sspi.c
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Abstract:
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This file contains the implementation for SSPI Authentication
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The following functions are exported by this module:
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UnloadAuthenticateUser
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AuthenticateUser
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PreAuthenticateUser
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AuthenticateUserUI
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Author:
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Sudheer Koneru (SudK) Created 2/17/96
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Revision History:
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--*/
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#include "msnspmh.h"
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#ifdef DEBUG_WINSSPI
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#include <stdio.h>
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#endif
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#include "auth.h"
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LPSTR StrChrA(LPCSTR lpStart, WORD wMatch); // from shlwapi.h
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DWORD g_cSspiContexts;
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#ifdef UNIX_SHMEM_CREDS
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/* On Unix: once a user puts in his credentials, we want to save
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* it in Shared memory so that other processes can use this data.
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* The login/password/domain are saved encrypted and you need the
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* routines in libntlmssp.so to unencrypt them.
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* When the process exits, the shared memory is cleaned up. If the
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* credentials are outdated during a session, we ask the user for
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* new credentials and try again.
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*/
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static BOOL g_fNeedNewCreds = FALSE;
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static FARPROC g_UXPCEFn = NULL;
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#endif
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#define NAME_SEPERATOR 0x5c // this is a backslash character which
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// seperates the domain name from user name
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VOID
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WINAPI
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UnloadAuthenticateUser(LPVOID *lppvContext,
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LPSTR lpszScheme,
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LPSTR lpszHost)
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{
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PWINCONTEXT pWinContext = (PWINCONTEXT) (*lppvContext);
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if (!SSPI_InitGlobals())
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return;
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if (*lppvContext == NULL) {
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return;
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}
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if (pWinContext->pInBuffer != NULL &&
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pWinContext->pInBuffer != pWinContext->szInBuffer)
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{
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LocalFree (pWinContext->pInBuffer);
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}
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pWinContext->pInBuffer = NULL;
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pWinContext->dwInBufferLength = 0;
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// Free SSPI security context
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if (pWinContext->pSspContextHandle != NULL)
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(*(g_pSspData->pFuncTbl->DeleteSecurityContext))(pWinContext->pSspContextHandle);
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// Free SSPI credential handle
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if (pWinContext->pCredential)
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(*(g_pSspData->pFuncTbl->FreeCredentialHandle))(pWinContext->pCredential);
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pWinContext->pCredential = NULL;
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pWinContext->pSspContextHandle = NULL;
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if ( (pWinContext->lpszServerName != NULL) &&
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(pWinContext->lpszServerName != pWinContext->szServerName) )
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{
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LocalFree(pWinContext->lpszServerName);
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}
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LocalFree(pWinContext);
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*lppvContext = NULL;
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g_cSspiContexts--;
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return;
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}
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// Function: SaveServerName
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// Synopsis: This function saves the destination server name in this
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// connection context for AuthenticateUserUI
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// Arguments: [lpszServerName] - points to the target server name
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// [pWinContext] - points to the connection context
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// Returns: TRUE if server name is successfully saved in connection context.
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// Otherwise, FALSE is returned.
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BOOL
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SaveServerName (
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LPSTR lpszServerName,
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PWINCONTEXT pWinContext
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)
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{
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DWORD dwLen = lstrlen(lpszServerName);
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if (dwLen < DEFAULT_SERVER_NAME_LEN)
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{
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lstrcpy(pWinContext->szServerName, lpszServerName);
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pWinContext->lpszServerName = pWinContext->szServerName;
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}
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else
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{ //
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// Server name is longer, need to allocate memory for the name
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// Free already allocated memory if any
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if (pWinContext->lpszServerName &&
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pWinContext->lpszServerName != pWinContext->szServerName)
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{
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LocalFree (pWinContext->lpszServerName);
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}
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pWinContext->lpszServerName = (char *) LocalAlloc(0, dwLen+1);
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if (pWinContext->lpszServerName == NULL)
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return FALSE;
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lstrcpy(pWinContext->lpszServerName, lpszServerName);
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}
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return TRUE;
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}
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// Function: BuildNTLMauthData
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// Synopsis: This function builds SEC_WINNT_AUTH_IDENTITY structure
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// from the user name and password specified. If domain name
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// is not specified in the user name, the Domain field in
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// the structure is set to NULL. NOTE: This structure is
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// specific to the NTLM SSPI package.
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// This function allocates a chunck of memory big enough for
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// storing user name, domain, and password. Then setup
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// pointers in pAuthData to use sections of this memory.
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// Arguments: [pAuthData] - points to the SEC_WINNT_AUTH_IDENTITY structure
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// [lpszUserName] - points to the user name, which may also
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// include user's domain name.
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// [lpszPassword] - points to user's password
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// Returns: TRUE if SEC_WINNT_AUTH_IDENTITY structure is successfully
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// initialized and built. Otherwise, FALSE is returned.
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BOOL
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BuildNTLMauthData (
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PSEC_WINNT_AUTH_IDENTITY pAuthData,
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LPTSTR lpszUserName,
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LPTSTR lpszPassword
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)
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{
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DWORD dwUserLen, dwDomainLen, dwPwdLen;
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LPTSTR pName;
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LPTSTR pDomain = NULL;
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// Check to see if domain name is specified in lpszUserName
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pAuthData->Flags = SEC_WINNT_AUTH_IDENTITY_ANSI;
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pName = StrChrA (lpszUserName, NAME_SEPERATOR);
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if (pName) // Domain name specified
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{
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// Make sure that we don't change the original string in lpszUserName
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// because that it would be reused for other connections
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// Calculate no. of bytes in domain name
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dwDomainLen = (int)(pName - lpszUserName);
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// Convert to no. of characters
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pAuthData->DomainLength = dwDomainLen / sizeof(TCHAR);
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pDomain = lpszUserName;
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pName++;
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}
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else // No domain specified
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{
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pName = lpszUserName;
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pAuthData->Domain = NULL;
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pDomain = NULL;
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dwDomainLen = pAuthData->DomainLength = 0;
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}
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dwUserLen = pAuthData->UserLength = lstrlen (pName);
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dwPwdLen = pAuthData->PasswordLength = lstrlen (lpszPassword);
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// Allocate memory for all: name, domain, and password
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pAuthData->User = (LPTSTR) LocalAlloc (LMEM_ZEROINIT,
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dwUserLen + dwDomainLen + dwPwdLen +
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sizeof(TCHAR) * 3);
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if (pAuthData->User == NULL)
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return (FALSE);
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CopyMemory (pAuthData->User, pName, dwUserLen);
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// Setup memory pointer for password
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pAuthData->Password = (LPTSTR)((UINT_PTR)pAuthData->User +
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dwUserLen + sizeof(TCHAR));
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CopyMemory (pAuthData->Password, lpszPassword, dwPwdLen);
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if (pAuthData->DomainLength > 0)
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{
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// Setup memory pointer for domain
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pAuthData->Domain = (LPTSTR)((UINT_PTR)pAuthData->Password +
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dwPwdLen + sizeof(TCHAR));
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CopyMemory (pAuthData->Domain, pDomain, dwDomainLen);
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}
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else
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{
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pAuthData->Domain = NULL;
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}
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return (TRUE);
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}
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// Function: FreeNTLMauthData
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// Synopsis: This function frees memory allocated for the
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// SEC_WINNT_AUTH_IDENTITY structure
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// Arguments: [pAuthData] - points to the SEC_WINNT_AUTH_IDENTITY structure
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// Returns: void.
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VOID
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FreeNTLMauthData (
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PSEC_WINNT_AUTH_IDENTITY pAuthData
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)
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{
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// Free User which points to memory for all domain, name, and password
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if (pAuthData->User)
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LocalFree (pAuthData->User);
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}
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// Function: NewWinContext
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// Synopsis: This function creates a new context and a new credential
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// handle for this connection. If a user name/password is
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// specified, the credential handle is created for the
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// specified user. Otherwise, the credential handle is created
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// for the local logon user.
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// Arguments: [pkgId] - the package ID (index into SSPI package list)
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// [lpszScheme] - the name of the current authentication scheme,
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// which is also the SSPI package name
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// [ppCtxt] - this returns the pointer of the created context
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// to the caller.
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// [lpszUserName] - the name of a specific user to be used
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// for authentication. If this is NULL, the
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// credential of the currently logon user is
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// used for authentication.
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// [lpszPassword] - the password of the specified user, if any.
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// Returns: ERROR_SUCCESS - if the new context is created successfully
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// ERROR_NOT_ENOUGH_MEMORY - if memory allocation failed
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// ERROR_INVALID_PARAMETER - the SSPI call for creating the
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// security credential handle failed
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DWORD
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NewWinContext (
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INT pkgId,
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LPSTR lpszScheme,
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PWINCONTEXT *ppCtxt,
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BOOL fCanUseLogon,
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LPSTR lpszUserName,
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LPSTR lpszPassword
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)
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{
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SECURITY_STATUS ss;
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TimeStamp Lifetime;
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PWINCONTEXT pWinContext;
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SEC_WINNT_AUTH_IDENTITY AuthData;
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PSEC_WINNT_AUTH_IDENTITY pAuthData;
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DWORD Capabilities ;
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pWinContext = (PWINCONTEXT) LocalAlloc(0, sizeof(WINCONTEXT));
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if (pWinContext == NULL)
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return (ERROR_NOT_ENOUGH_MEMORY);
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// Initialize context
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ZeroMemory (&pWinContext->SspContextHandle, sizeof(CtxtHandle));
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pWinContext->pCredential = NULL;
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pWinContext->pSspContextHandle = NULL;
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pWinContext->pInBuffer = NULL;
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pWinContext->dwOutBufferLength = 0;
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pWinContext->dwInBufferLength = 0;
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//pWinContext->dwCallId = 1; // First Call
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pWinContext->pkgId = (DWORD)pkgId;
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pWinContext->lpszServerName = NULL;
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// Get bitmask representing the package capabilities
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Capabilities = GetPkgCapabilities( pkgId );
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if ( ( Capabilities & SSPAUTHPKG_SUPPORT_NTLM_CREDS ) == 0 )
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{
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// Always used cached credential for msn, dpa, etc.
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pAuthData = NULL;
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}
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else if (lpszUserName && lpszPassword)
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{
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// Build AuthData from the specified user name/password
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if (!BuildNTLMauthData (&AuthData, lpszUserName, lpszPassword))
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return (ERROR_NOT_ENOUGH_MEMORY);
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pAuthData = &AuthData;
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}
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#ifdef UNIX_SHMEM_CREDS
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else if (fCanUseLogon && UnixCachedCredentialExists())
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{
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pAuthData = NULL;
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}
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#else
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else if (fCanUseLogon)
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{
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// The zone policy allows silent use of the logon credential.
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pAuthData = NULL;
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}
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#endif /* UNIX_SHMEM_CREDS */
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else
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{
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// We must prompt the user for credentials.
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return ERROR_INTERNET_INCORRECT_PASSWORD;
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}
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// Call SSPI function acquire security credential for this package
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ss = (*(g_pSspData->pFuncTbl->AcquireCredentialsHandle))(
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NULL, // New principal
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lpszScheme, // SSPI Package Name
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SECPKG_CRED_OUTBOUND,// Credential Use
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NULL, // Logon ID
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pAuthData, // Auth Data
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NULL, // Get key func
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NULL, // Get key arg
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&pWinContext->Credential, // Credential Handle
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&Lifetime );
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if (pAuthData)
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FreeNTLMauthData (pAuthData);
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if (ss != STATUS_SUCCESS)
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{
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LocalFree (pWinContext);
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#ifdef UNIX_SHMEM_CREDS //If NTLM failed due to bad shared mem creds, prompt the user again...
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if (lstrcmpi(lpszScheme, "NTLM") == 0)
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{
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g_fNeedNewCreds = TRUE;
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return ERROR_INTERNET_INCORRECT_PASSWORD;
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}
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else
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#endif
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return (ERROR_INVALID_PARAMETER);
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}
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#ifdef UNIX_SHMEM_CREDS // if NTLM, the credentials were valid...
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if (lstrcmpi(lpszScheme, "NTLM") == 0)
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g_fNeedNewCreds = FALSE;
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#endif
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pWinContext->pCredential = &pWinContext->Credential;
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*ppCtxt = pWinContext;
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g_cSspiContexts++;
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return (ERROR_SUCCESS);
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}
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#ifdef UNIX_SHMEM_CREDS
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BOOL
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UnixCachedCredentialExists(
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)
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{
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BOOL fCached;
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if (g_fNeedNewCreds)
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return FALSE;
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if (!g_UXPCEFn)
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g_UXPCEFn = GetProcAddress(GetModuleHandle("ntlmssp"), "UnixXProcCredExists");
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fCached = g_UXPCEFn();
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return fCached;
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}
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#endif /* UNIX_SHMEM_CREDS */
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// Function: RedoNTLMAuth4User
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// Synopsis: This function recreates a NTLM credential handle for the
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// specified user and generate a NEGOTIATE message in
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// the provided buffer with the new credential handle.
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// Arguments: [pWinContext] - points to the connection context
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// [pkgId] - specifies the SSPI pkg to be used for authentication
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// [lpszUserName] - the name of the specific user to be used
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// for authentication.
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// [lpszPassword] - the password of the specified user,
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// [lpszServerName] - the target server name
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// [lpszScheme] - the name of the current authentication scheme,
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// which is also the SSPI package name
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// [lpOutBuffer] - points to the buffer for the new authorization
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// header including the UUENCODED NEGOTIATE msg
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// [lpdwOutBufferLength] - returns the length of the generated
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// authorization header.
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// Returns: ERROR_SUCCESS - if the new authorization header is successfully
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// created for the new user name/password
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// ERROR_NOT_ENOUGH_MEMORY - if memory allocation failed
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// ERROR_INVALID_HANDLE - the SSPI call for generating the
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// new NEGOTIATE msg failed
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DWORD
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RedoNTLMAuth4User (
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PWINCONTEXT pWinContext,
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INT pkgId,
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LPSTR lpszUserName,
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LPSTR lpszPassword,
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LPSTR lpszServerName,
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LPSTR lpszScheme,
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LPSTR lpOutBuffer,
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LPDWORD lpdwOutBufferLength,
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SECURITY_STATUS *pssResult
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)
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{
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SECURITY_STATUS ss;
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DWORD dwStatus;
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TimeStamp Lifetime;
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SEC_WINNT_AUTH_IDENTITY AuthData;
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ULONG fContextReq = ISC_REQ_DELEGATE;
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DWORD dwMaxLen;
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if (pWinContext->pSspContextHandle)
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{
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(*(g_pSspData->pFuncTbl->DeleteSecurityContext))(pWinContext->pSspContextHandle);
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pWinContext->pSspContextHandle = NULL;
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}
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// Free existing credential handle
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if (pWinContext->pCredential)
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(*(g_pSspData->pFuncTbl->FreeCredentialHandle))(pWinContext->pCredential);
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// Build the NTLM SSPI AuthData from the specified user name/password
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if (!BuildNTLMauthData (&AuthData, lpszUserName, lpszPassword))
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return (ERROR_NOT_ENOUGH_MEMORY);
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// Call SSPI function acquire security credential for this user
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ss = (*(g_pSspData->pFuncTbl->AcquireCredentialsHandle))(
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NULL, // New principal
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lpszScheme, // SSPI Package Name
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SECPKG_CRED_OUTBOUND,// Credential Use
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NULL, // Logon ID
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&AuthData, // Auth Data
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NULL, // Get key func
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NULL, // Get key arg
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&pWinContext->Credential, // Credential Handle
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&Lifetime );
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FreeNTLMauthData (&AuthData); // don't need it any more
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if (ss != STATUS_SUCCESS)
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{
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return (ERROR_INVALID_HANDLE);
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}
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pWinContext->pCredential = &pWinContext->Credential;
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dwMaxLen = *lpdwOutBufferLength;
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// Generate NEGOTIATE message in the provided buffer for this user
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dwStatus = GetSecAuthMsg( g_pSspData,
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pWinContext->pCredential,
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pkgId,
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NULL,
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&(pWinContext->SspContextHandle),
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fContextReq,
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NULL,
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0,
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lpOutBuffer,
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lpdwOutBufferLength,
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lpszServerName,
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TRUE,
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lpszScheme,
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pssResult);
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if (dwStatus != SPM_STATUS_OK)
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{
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*lpdwOutBufferLength = 0; // no exchange blob generated
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return(ERROR_INVALID_HANDLE);
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}
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pWinContext->pSspContextHandle = &(pWinContext->SspContextHandle);
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// If we are not in the initial state, continue to a RESPONSE message
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if (pWinContext->pInBuffer != NULL && pWinContext->dwInBufferLength > 0)
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{
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*lpdwOutBufferLength = dwMaxLen;
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ZeroMemory( lpOutBuffer, dwMaxLen );
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dwStatus = GetSecAuthMsg( g_pSspData,
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pWinContext->pCredential,
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pWinContext->pkgId,
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pWinContext->pSspContextHandle,
|
|
(PCtxtHandle) &(pWinContext->SspContextHandle),
|
|
fContextReq,
|
|
pWinContext->pInBuffer,
|
|
pWinContext->dwInBufferLength,
|
|
lpOutBuffer,
|
|
lpdwOutBufferLength,
|
|
pWinContext->lpszServerName,
|
|
TRUE,
|
|
lpszScheme,
|
|
pssResult);
|
|
|
|
// Clear out the input exchange blob
|
|
|
|
if (pWinContext->pInBuffer != NULL)
|
|
{
|
|
if (pWinContext->pInBuffer != pWinContext->szInBuffer)
|
|
LocalFree (pWinContext->pInBuffer);
|
|
pWinContext->pInBuffer = NULL;
|
|
pWinContext->dwInBufferLength = 0;
|
|
}
|
|
|
|
if (dwStatus != SPM_STATUS_OK)
|
|
{
|
|
*lpdwOutBufferLength = 0; // no exchange blob generated
|
|
return(ERROR_INVALID_HANDLE);
|
|
}
|
|
}
|
|
|
|
return (ERROR_SUCCESS);
|
|
}
|
|
|
|
|
|
// functions
|
|
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Generates a Basic User Authentication string for WinINet or
|
|
other callers can use
|
|
|
|
Arguments:
|
|
|
|
lpContext - if the package accepts the request & authentication
|
|
requires multiple transactions, the package will supply
|
|
a context value which will be used in subsequent calls,
|
|
Currently this contains a pointer to a pointer of a
|
|
User defined Void Pointer. Can be Assume to be NULL
|
|
if this is the first instance of a Realm - Host Combo
|
|
|
|
lpszServerName - the name of the server we are performing
|
|
authentication for. We may want to supply the full URL
|
|
|
|
lpszScheme - the name of the authentication scheme we are seeking, e.g. "MSN", in case the package supports multiple schemes
|
|
|
|
dwFlags - on input, flags modifying how the package should behave,
|
|
e.g. "only authenticate if you don't have to get user
|
|
information" On output contains flags relevant to
|
|
future HTTP requests, e.g. "don't cache any data from
|
|
this connection". Note, this information should not be
|
|
specific to HTTP - we may want to use the same flags
|
|
for FTP, etc.
|
|
|
|
lpszInBuffer - pointer to the string containing the response from
|
|
the server (if any)
|
|
|
|
dwInBufferLength - number of bytes in lpszInBuffer. No CR-LF sequence, no terminating NUL
|
|
|
|
lpOutBuffer - pointer to a buffer where the challenge response will be written by the
|
|
package if it can handle the request
|
|
|
|
lpdwOutBufferLength - on input, contains the size of lpOutBuffer. On output, contains the
|
|
number of bytes to return to the server in the next GET request
|
|
(or whatever). If lpOutBuffer is too small, the package should
|
|
return ERROR_INSUFFICIENT_BUFFER and set *lpdwOutBufferLength to be
|
|
the required length
|
|
|
|
We will keep a list of the authentication packages and the schemes they support,
|
|
along with the entry point name (should be the same for all packages) in the registry.
|
|
|
|
Wininet should keep enough information such that it can make a reasonable guess as to
|
|
whether we need to authenticate a connection attempt, or whether we can use previously
|
|
authenticated information
|
|
|
|
|
|
Return Value:
|
|
|
|
DWORD
|
|
Success - non-zero
|
|
Failure - 0. Error status is available by calling GetLastError()
|
|
|
|
--*/
|
|
DWORD
|
|
WINAPI
|
|
AuthenticateUser(
|
|
IN OUT LPVOID *lppvContext,
|
|
IN LPSTR lpszServerName,
|
|
IN LPSTR lpszScheme,
|
|
IN BOOL fCanUseLogon,
|
|
IN LPSTR lpszInBuffer,
|
|
IN DWORD dwInBufferLength,
|
|
IN LPSTR lpszUserName,
|
|
IN LPSTR lpszPassword,
|
|
OUT SECURITY_STATUS *pssResult
|
|
)
|
|
{
|
|
PWINCONTEXT pWinContext;
|
|
LPSTR pServerBlob = NULL;
|
|
int pkgId;
|
|
DWORD SPMStatus;
|
|
ULONG fContextReq = ISC_REQ_DELEGATE;
|
|
BOOL bNonBlock = TRUE;
|
|
|
|
if (!SSPI_InitGlobals())
|
|
return ERROR_INVALID_PARAMETER;
|
|
|
|
|
|
pkgId = GetPkgId(lpszScheme);
|
|
|
|
if (pkgId == -1)
|
|
return (ERROR_INVALID_PARAMETER);
|
|
|
|
if (*lppvContext == NULL) // a new connection
|
|
{
|
|
char msg[1024];
|
|
DWORD dwStatus;
|
|
|
|
|
|
// First time we are getting called here, there should be no input blob
|
|
|
|
if (dwInBufferLength != 0)
|
|
return (ERROR_INVALID_PARAMETER);
|
|
|
|
dwStatus = NewWinContext (pkgId, lpszScheme, &pWinContext,
|
|
fCanUseLogon, lpszUserName, lpszPassword);
|
|
if (dwStatus != ERROR_SUCCESS)
|
|
return (dwStatus);
|
|
|
|
(*lppvContext) = (LPVOID) pWinContext;
|
|
#ifdef DEBUG_WINSSPI
|
|
(void)wsprintf (msg, "AuthenticateUser> Scheme= %s Server= '%s'\n", lpszScheme, lpszServerName);
|
|
OutputDebugString(msg);
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
pWinContext = (PWINCONTEXT) (*lppvContext);
|
|
|
|
|
|
// The package Id better be the same. Cant just switch packageId
|
|
// arbitrarily
|
|
|
|
if (pWinContext->pkgId != (DWORD)pkgId)
|
|
return (ERROR_INVALID_PARAMETER);
|
|
|
|
pServerBlob = lpszInBuffer;
|
|
|
|
//++(pWinContext->dwCallId); // Increment Call Id
|
|
|
|
|
|
// BUGBUG: Hack for now to know when auth failed
|
|
// The only time we get lpszInBuffer to be empty is when
|
|
// Web server failed the authentication request
|
|
|
|
if (dwInBufferLength == 0)
|
|
{
|
|
|
|
// This means auth has failed as far as NTLM/MSN are concerned.
|
|
// Will result in UI being done again for new passwd
|
|
|
|
|
|
// Make sure we should have the same server name as before
|
|
|
|
if ( pWinContext->lpszServerName != NULL &&
|
|
lstrcmp (pWinContext->lpszServerName, lpszServerName) != 0 )
|
|
{
|
|
return(ERROR_INVALID_PARAMETER);
|
|
}
|
|
|
|
if (!SaveServerName (lpszServerName, pWinContext))
|
|
return (ERROR_NOT_ENOUGH_MEMORY);
|
|
|
|
|
|
// Delete the original SSPI context handle and
|
|
// let UI recreate one.
|
|
|
|
if (pWinContext->pSspContextHandle)
|
|
{
|
|
(*(g_pSspData->pFuncTbl->DeleteSecurityContext))(pWinContext->pSspContextHandle);
|
|
pWinContext->pSspContextHandle = NULL;
|
|
}
|
|
|
|
if (pWinContext->pInBuffer != NULL &&
|
|
pWinContext->pInBuffer != pWinContext->szInBuffer)
|
|
{
|
|
LocalFree (pWinContext->pInBuffer);
|
|
}
|
|
|
|
pWinContext->pInBuffer = NULL;
|
|
pWinContext->dwInBufferLength = 0;
|
|
|
|
|
|
// clear buffer length for the exchange blob
|
|
|
|
pWinContext->dwOutBufferLength = 0;
|
|
|
|
|
|
// The following is a temporary workaround for bugs in IE3
|
|
// Should remove this special case for DPA package once IE3
|
|
// bug is fixed (or once we move to new Wininet interface.
|
|
|
|
//***** BUGBUG *** Begin Special Case for DPA
|
|
if (lstrcmpi (lpszScheme, "DPA") == 0)
|
|
{
|
|
fContextReq |= ISC_REQ_PROMPT_FOR_CREDS;
|
|
}
|
|
//***** BUGBUG *** End Special Case for DPA
|
|
else
|
|
return (ERROR_INTERNET_INCORRECT_PASSWORD);
|
|
}
|
|
}
|
|
|
|
|
|
// Setup dwOutBufferLength to represent max. memory in szOutBuffer
|
|
|
|
pWinContext->dwOutBufferLength = MAX_BLOB_SIZE;
|
|
ZeroMemory (pWinContext->szOutBuffer, MAX_BLOB_SIZE);
|
|
|
|
|
|
// This will generate an authorization header with UUEncoded blob from SSPI.
|
|
// BUGBUG: Better make sure outbuf buffer is big enough for this.
|
|
|
|
SPMStatus = GetSecAuthMsg( g_pSspData,
|
|
pWinContext->pCredential,
|
|
pkgId,
|
|
pWinContext->pSspContextHandle,
|
|
&(pWinContext->SspContextHandle),
|
|
fContextReq,
|
|
pServerBlob,
|
|
dwInBufferLength,
|
|
pWinContext->szOutBuffer,
|
|
&pWinContext->dwOutBufferLength,
|
|
lpszServerName,
|
|
bNonBlock,
|
|
lpszScheme,
|
|
pssResult);
|
|
|
|
if (SPMStatus != SPM_STATUS_OK) // Fail to generate blob
|
|
{
|
|
pWinContext->dwOutBufferLength = 0; // no exchange blob generated
|
|
|
|
|
|
// if SSPI is requesting an opportunity to prompt for user credential
|
|
|
|
if (SPMStatus == SPM_STATUS_WOULD_BLOCK)
|
|
{
|
|
if (!SaveServerName (lpszServerName, pWinContext))
|
|
return (ERROR_NOT_ENOUGH_MEMORY);
|
|
|
|
// If there is a exchange blob, this is not the first call
|
|
|
|
if (pServerBlob && dwInBufferLength > 0)
|
|
{
|
|
// Save the exchange blob in the connection context
|
|
// so we can call SSPI again with the exchange blob
|
|
if (dwInBufferLength > MAX_BLOB_SIZE)
|
|
{
|
|
pWinContext->pInBuffer = (PCHAR) LocalAlloc(0,
|
|
dwInBufferLength);
|
|
if (pWinContext->pInBuffer == NULL)
|
|
return (ERROR_NOT_ENOUGH_MEMORY);
|
|
}
|
|
else
|
|
pWinContext->pInBuffer = pWinContext->szInBuffer;
|
|
|
|
CopyMemory( pWinContext->szInBuffer, pServerBlob,
|
|
dwInBufferLength );
|
|
pWinContext->dwInBufferLength = dwInBufferLength;
|
|
}
|
|
else
|
|
{
|
|
|
|
// Delete the original SSPI context handle and
|
|
// let UI recreate one.
|
|
|
|
if (pWinContext->pSspContextHandle)
|
|
{
|
|
(*(g_pSspData->pFuncTbl->DeleteSecurityContext))(pWinContext->pSspContextHandle);
|
|
pWinContext->pSspContextHandle = NULL;
|
|
}
|
|
|
|
|
|
// clear buffer length for the exchange blob
|
|
|
|
if (pWinContext->pInBuffer != NULL &&
|
|
pWinContext->pInBuffer != pWinContext->szInBuffer)
|
|
{
|
|
LocalFree (pWinContext->pInBuffer);
|
|
}
|
|
|
|
pWinContext->pInBuffer = NULL;
|
|
pWinContext->dwInBufferLength = 0;
|
|
}
|
|
pWinContext->dwOutBufferLength = 0;
|
|
|
|
return(ERROR_INTERNET_INCORRECT_PASSWORD);
|
|
}
|
|
|
|
return (ERROR_INTERNET_LOGIN_FAILURE);
|
|
}
|
|
else if (pWinContext->pSspContextHandle == NULL)
|
|
{
|
|
// This means that we've just created a security context
|
|
|
|
pWinContext->pSspContextHandle = &(pWinContext->SspContextHandle);
|
|
}
|
|
|
|
return (ERROR_INTERNET_FORCE_RETRY);
|
|
}
|
|
|
|
|
|
DWORD
|
|
WINAPI
|
|
PreAuthenticateUser(
|
|
IN OUT LPVOID *lppvContext,
|
|
IN LPSTR lpszServerName,
|
|
IN LPSTR lpszScheme,
|
|
IN DWORD dwFlags,
|
|
OUT LPSTR lpOutBuffer,
|
|
IN OUT LPDWORD lpdwOutBufferLength,
|
|
IN LPSTR lpszUserName,
|
|
IN LPSTR lpszPassword,
|
|
SECURITY_STATUS *pssResult
|
|
)
|
|
{
|
|
INT pkgId;
|
|
DWORD dwStatus;
|
|
PWINCONTEXT pWinContext;
|
|
BOOL bNonBlock = TRUE;
|
|
ULONG fContextReq = ISC_REQ_DELEGATE;
|
|
DWORD Capabilities ;
|
|
|
|
if (!SSPI_InitGlobals())
|
|
return ERROR_INVALID_PARAMETER;
|
|
|
|
if (lpszServerName == NULL || *lpszServerName == '\0')
|
|
return(ERROR_INVALID_PARAMETER);
|
|
|
|
pkgId = GetPkgId(lpszScheme);
|
|
|
|
if (pkgId == -1) {
|
|
return(ERROR_INVALID_PARAMETER);
|
|
}
|
|
|
|
Capabilities = GetPkgCapabilities( pkgId );
|
|
|
|
|
|
// If this is for an existing connection
|
|
|
|
if (*lppvContext != NULL)
|
|
{
|
|
pWinContext = (PWINCONTEXT) (*lppvContext);
|
|
|
|
if ((DWORD)pkgId != pWinContext->pkgId)
|
|
return(ERROR_INVALID_PARAMETER);
|
|
|
|
|
|
// For package that does not handle its own UI, if there is no
|
|
// generated blob, it means that we have just collected
|
|
// user name/password.
|
|
|
|
if ( ( pWinContext->dwOutBufferLength == 0 ) &&
|
|
( Capabilities & SSPAUTHPKG_SUPPORT_NTLM_CREDS ) )
|
|
{
|
|
if (lpszUserName == NULL || lpszPassword == NULL)
|
|
{
|
|
return(ERROR_INVALID_PARAMETER);
|
|
}
|
|
|
|
|
|
// Need to recreate a credential handle and
|
|
// generate a new NEGOTIATE message in lpOutBuffer
|
|
|
|
dwStatus = RedoNTLMAuth4User (pWinContext,
|
|
pkgId,
|
|
lpszUserName,
|
|
lpszPassword,
|
|
lpszServerName ,
|
|
lpszScheme,
|
|
lpOutBuffer,
|
|
lpdwOutBufferLength,
|
|
pssResult);
|
|
|
|
if (dwStatus != ERROR_SUCCESS)
|
|
return (dwStatus);
|
|
|
|
return(ERROR_SUCCESS);
|
|
}
|
|
else if (pWinContext->dwOutBufferLength == 0)
|
|
|
|
// For other packages, If there is no generated blob,
|
|
// something is wrong
|
|
|
|
return(ERROR_INVALID_PARAMETER);
|
|
|
|
}
|
|
// If not NTLM, don't pre-auth.
|
|
else if ( (Capabilities & SSPAUTHPKG_SUPPORT_NTLM_CREDS ) == 0 )
|
|
{
|
|
return (ERROR_INVALID_HANDLE);
|
|
}
|
|
else
|
|
{
|
|
// probably sending 1st request on a new connection for the same URL
|
|
// Create a new context and SSPI credential handle for this connection
|
|
|
|
// Set fCanUseLogon to TRUE : we would not be pre-authing
|
|
// unless we have a valid pwc which means we already checked
|
|
// zone policy for silent logon.
|
|
dwStatus = NewWinContext (pkgId, lpszScheme, &pWinContext,
|
|
TRUE, lpszUserName, lpszPassword);
|
|
if (dwStatus != ERROR_SUCCESS)
|
|
return (dwStatus);
|
|
|
|
#ifdef DEBUG_WINSSPI
|
|
(void)wsprintf (msg, "PreAuthenticateUser> New Context for Scheme= %s Server= '%s'\n", lpszScheme, lpszServerName);
|
|
OutputDebugString(msg);
|
|
#endif
|
|
pWinContext->dwOutBufferLength = MAX_BLOB_SIZE;
|
|
ZeroMemory (pWinContext->szOutBuffer, MAX_BLOB_SIZE);
|
|
|
|
|
|
// This will generate an authorization header with the
|
|
// UUEncoded blob from SSPI.
|
|
// BUGBUG: Better make sure outbuf buffer is big enough for this.
|
|
|
|
dwStatus = GetSecAuthMsg( g_pSspData,
|
|
pWinContext->pCredential,
|
|
pkgId,
|
|
NULL,
|
|
&(pWinContext->SspContextHandle),
|
|
fContextReq,
|
|
NULL,
|
|
0,
|
|
pWinContext->szOutBuffer,
|
|
&pWinContext->dwOutBufferLength,
|
|
lpszServerName,
|
|
bNonBlock,
|
|
lpszScheme,
|
|
pssResult);
|
|
|
|
if (dwStatus != SPM_STATUS_OK)
|
|
{
|
|
// This is a rare case
|
|
|
|
pWinContext->dwOutBufferLength = 0; // no exchange blob generated
|
|
return(ERROR_INVALID_HANDLE);
|
|
}
|
|
|
|
(*lppvContext) = (LPVOID) pWinContext;
|
|
|
|
// Save the pointer of the created security ctxt
|
|
|
|
pWinContext->pSspContextHandle = &(pWinContext->SspContextHandle);
|
|
}
|
|
|
|
|
|
// Copy exchange blob to the output buffer
|
|
// Make sure output buffer provided is big enough
|
|
|
|
if (*lpdwOutBufferLength < pWinContext->dwOutBufferLength)
|
|
{
|
|
*lpdwOutBufferLength = pWinContext->dwOutBufferLength + 1;
|
|
return(ERROR_INSUFFICIENT_BUFFER);
|
|
}
|
|
|
|
CopyMemory (lpOutBuffer, pWinContext->szOutBuffer,
|
|
pWinContext->dwOutBufferLength);
|
|
if (*lpdwOutBufferLength > pWinContext->dwOutBufferLength)
|
|
lpOutBuffer[pWinContext->dwOutBufferLength] = '\0';
|
|
|
|
*lpdwOutBufferLength = pWinContext->dwOutBufferLength;
|
|
|
|
|
|
// The exchange blob has being copied to request header, so clear its len
|
|
|
|
|
|
pWinContext->dwOutBufferLength = 0;
|
|
|
|
return(ERROR_SUCCESS);
|
|
}
|
|
|
|
DWORD
|
|
WINAPI
|
|
AuthenticateUserUI(
|
|
IN OUT LPVOID* lppvContext,
|
|
IN HWND hWnd,
|
|
IN DWORD dwError,
|
|
IN DWORD dwFlags,
|
|
IN OUT InvalidPassType* pAuthInfo,
|
|
IN LPSTR lpszScheme,
|
|
OUT SECURITY_STATUS* pssResult
|
|
)
|
|
{
|
|
DWORD SPMStatus;
|
|
PWINCONTEXT pWinContext = NULL;
|
|
BOOL bNonBlock = FALSE;
|
|
ULONG fContextReq = ISC_REQ_PROMPT_FOR_CREDS | ISC_REQ_DELEGATE;
|
|
|
|
if (!SSPI_InitGlobals())
|
|
return ERROR_INVALID_PARAMETER;
|
|
|
|
if (*lppvContext == NULL) {
|
|
return(ERROR_INVALID_PARAMETER);
|
|
}
|
|
|
|
pWinContext = (PWINCONTEXT) (*lppvContext);
|
|
|
|
if (pWinContext->lpszServerName == NULL)
|
|
return(ERROR_INVALID_PARAMETER);
|
|
|
|
pWinContext->dwOutBufferLength = MAX_BLOB_SIZE;
|
|
ZeroMemory (pWinContext->szOutBuffer, MAX_BLOB_SIZE);
|
|
|
|
|
|
// Now make the password logon happen by calling GetSecAuthMsg (without
|
|
// context handle) with the ISC_REQ_PROMPT_FOR_CREDS flag set
|
|
|
|
// After this will it call PreAuthenticateUser
|
|
|
|
|
|
SPMStatus = GetSecAuthMsg( g_pSspData,
|
|
pWinContext->pCredential,
|
|
pWinContext->pkgId,
|
|
pWinContext->pSspContextHandle,
|
|
(PCtxtHandle) &(pWinContext->SspContextHandle),
|
|
fContextReq,
|
|
pWinContext->pInBuffer,
|
|
pWinContext->dwInBufferLength,
|
|
pWinContext->szOutBuffer,
|
|
&pWinContext->dwOutBufferLength,
|
|
pWinContext->lpszServerName,
|
|
bNonBlock,
|
|
lpszScheme,
|
|
pssResult);
|
|
|
|
// Clear out the input exchange blob
|
|
|
|
if (pWinContext->pInBuffer != NULL)
|
|
{
|
|
if (pWinContext->pInBuffer != pWinContext->szInBuffer)
|
|
LocalFree (pWinContext->pInBuffer);
|
|
pWinContext->pInBuffer = NULL;
|
|
pWinContext->dwInBufferLength = 0;
|
|
}
|
|
|
|
if (SPMStatus != SPM_STATUS_OK) {
|
|
pWinContext->dwOutBufferLength = 0;
|
|
return (ERROR_CANCELLED);
|
|
}
|
|
|
|
if (pWinContext->pSspContextHandle == NULL)
|
|
pWinContext->pSspContextHandle = &(pWinContext->SspContextHandle);
|
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|
|
|
|
// BUGBUG
|
|
// Setup the UserName and Password to be " " to work around bugs in Wininet
|
|
|
|
|
|
lstrcpy (pAuthInfo->lpszUsername, " ");
|
|
lstrcpy (pAuthInfo->lpszPassword, " ");
|
|
|
|
return (ERROR_INTERNET_FORCE_RETRY);
|
|
}
|
|
|