/*++ Copyright (c) 1987-1999 Microsoft Corporation Module Name: sessetup.c Abstract: This module implements the Session setup related routines --*/ #include "precomp.h" #pragma hdrstop #include "ntlmsp.h" // // The local debug trace level // #define Dbg (DEBUG_TRACE_DISPATCH) #ifdef ALLOC_PRAGMA #pragma alloc_text(PAGE, BuildSessionSetupSmb) #pragma alloc_text(PAGE, BuildNtLanmanResponsePrologue) #pragma alloc_text(PAGE, BuildNtLanmanResponseEpilogue) #pragma alloc_text(PAGE, BuildSessionSetupSecurityInformation) #pragma alloc_text(PAGE, BuildTreeConnectSecurityInformation) #endif BOOLEAN EnablePlainTextPassword = FALSE; NTSTATUS BuildSessionSetupSmb( PSMB_EXCHANGE pExchange, PGENERIC_ANDX pAndXSmb, PULONG pAndXSmbBufferSize) /*++ Routine Description: This routine builds the session setup SMB for a NT server Arguments: pExchange - the exchange instance pAndXSmb - the session setup to be filled in pAndXSmbBufferSize - the SMB buffer size on input modified to remaining size on output. Return Value: NTSTATUS - The return status for the operation Notes: Eventhough the general structure of the code tries to isolate dialect specific issues as much as possible this routine takes the opposite approach. This is because of the preamble and prologue to security interaction which far outweigh the dialect specific work required to be done. Therefore in the interests of a smaller footprint this approach has been adopted. --*/ { NTSTATUS Status; PSMBCEDB_SESSION_ENTRY pSessionEntry; PSMBCE_SERVER pServer; PSMBCE_SESSION pSession; PREQ_SESSION_SETUP_ANDX pSessionSetup; PREQ_NT_SESSION_SETUP_ANDX pNtSessionSetup; ULONG OriginalBufferSize = *pAndXSmbBufferSize; PAGED_CODE(); pSessionEntry = SmbCeGetExchangeSessionEntry(pExchange); pServer = SmbCeGetExchangeServer(pExchange); pSession = SmbCeGetExchangeSession(pExchange); // There are three different variants of session setup and X that can be shipped to the // server. All three of them share some common fields. The setting of these common fields // is done in all the three cases by accessing the passed in buffer as an instance of // REQ_SESSION_SETUP_ANDX. The fields specific to the remaining two are conditionalized upon // accessing the same buffer as an instance of REQ_NT_SESSION_SETUP_ANDX. This implies that // great care must be taken in shuffling the fields in these two structs. pSessionSetup = (PREQ_SESSION_SETUP_ANDX)pAndXSmb; pNtSessionSetup = (PREQ_NT_SESSION_SETUP_ANDX)pSessionSetup; pSessionSetup->AndXCommand = 0xff; // No ANDX pSessionSetup->AndXReserved = 0x00; // Reserved (MBZ) SmbPutUshort(&pSessionSetup->AndXOffset, 0x0000); // No AndX as of yet. // Since we can allocate pool dynamically, we set our buffer size // to match that of the server. SmbPutUshort(&pSessionSetup->MaxBufferSize, (USHORT)pServer->MaximumBufferSize); SmbPutUshort(&pSessionSetup->MaxMpxCount, pServer->MaximumRequests); SmbPutUshort(&pSessionSetup->VcNumber, (USHORT)pSessionEntry->SessionVCNumber); SmbPutUlong(&pSessionSetup->SessionKey, pServer->SessionKey); SmbPutUlong(&pSessionSetup->Reserved, 0); if (pServer->Dialect == NTLANMAN_DIALECT) { // Set up the NT server session setup specific parameters. SmbPutUshort(&pNtSessionSetup->WordCount,13); // Set the capabilities SmbPutUlong( &pNtSessionSetup->Capabilities, (CAP_NT_STATUS | CAP_UNICODE | CAP_LEVEL_II_OPLOCKS | CAP_NT_SMBS )); } else { SmbPutUshort(&pSessionSetup->WordCount,10); } // Build the security information in the session setup SMB. Status = BuildSessionSetupSecurityInformation( pExchange, (PBYTE)pSessionSetup, pAndXSmbBufferSize); if (NT_SUCCESS(Status)) { // Copy the operating system name and the LANMAN version info // position the buffer for copying the operating system name and the lanman type. PBYTE pBuffer = (PBYTE)pSessionSetup + OriginalBufferSize - *pAndXSmbBufferSize; if (FlagOn(pServer->DialectFlags,DF_UNICODE)){ // // Make sure the UNICODE string is suitably aligned // if( ((ULONG_PTR)pBuffer) & 01 ) { pBuffer++; (*pAndXSmbBufferSize)--; } Status = SmbPutUnicodeString( &pBuffer, &SmbCeContext.OperatingSystem, pAndXSmbBufferSize); if (NT_SUCCESS(Status)) { Status = SmbPutUnicodeString( &pBuffer, &SmbCeContext.LanmanType, pAndXSmbBufferSize); } } else { Status = SmbPutUnicodeStringAsOemString( &pBuffer, &SmbCeContext.OperatingSystem, pAndXSmbBufferSize); if (NT_SUCCESS(Status)) { Status = SmbPutUnicodeStringAsOemString( &pBuffer, &SmbCeContext.LanmanType, pAndXSmbBufferSize); } } if (NT_SUCCESS(Status)) { if (pServer->Dialect == NTLANMAN_DIALECT) { SmbPutUshort( &pNtSessionSetup->ByteCount, (USHORT)(OriginalBufferSize - FIELD_OFFSET(REQ_NT_SESSION_SETUP_ANDX,Buffer) - *pAndXSmbBufferSize)); } else { SmbPutUshort( &pSessionSetup->ByteCount, (USHORT)(OriginalBufferSize - FIELD_OFFSET(REQ_SESSION_SETUP_ANDX,Buffer) - *pAndXSmbBufferSize)); } } } return Status; } #define IsCredentialHandleValid(pCredHandle) \ (((pCredHandle)->dwLower != 0xffffffff) && ((pCredHandle)->dwUpper != 0xffffffff)) #define IsSecurityContextHandleValid(pContextHandle) \ (((pContextHandle)->dwLower != 0xffffffff) && ((pContextHandle)->dwUpper != 0xffffffff)) NTSTATUS BuildNtLanmanResponsePrologue( PSMB_EXCHANGE pExchange, PUNICODE_STRING pUserName, PUNICODE_STRING pDomainName, PSTRING pCaseSensitiveResponse, PSTRING pCaseInsensitiveResponse, PSECURITY_RESPONSE_CONTEXT pResponseContext) /*++ Routine Description: This routine builds the security related information for the session setup SMB. Arguments: Return Value: RXSTATUS - The return status for the operation Notes: --*/ { NTSTATUS Status; NTSTATUS FinalStatus; UNICODE_STRING ServerName; PVOID pTargetInformation; ULONG TargetInformationSize; SecBufferDesc InputToken; SecBuffer InputBuffer[2]; SecBufferDesc *pOutputBufferDescriptor = NULL; SecBuffer *pOutputBuffer = NULL; ULONG_PTR OutputBufferDescriptorSize; ULONG LsaFlags = ISC_REQ_ALLOCATE_MEMORY; TimeStamp Expiry; PCHALLENGE_MESSAGE InToken = NULL; ULONG InTokenSize; PNTLM_CHALLENGE_MESSAGE NtlmInToken = NULL; ULONG NtlmInTokenSize = 0; PAUTHENTICATE_MESSAGE OutToken = NULL; PNTLM_INITIALIZE_RESPONSE NtlmOutToken = NULL; PUCHAR p = NULL; ULONG_PTR AllocateSize; PSMBCE_SERVER pServer = SmbCeGetExchangeServer(pExchange); PSMBCE_SESSION pSession = SmbCeGetExchangeSession(pExchange); PAGED_CODE(); try { pResponseContext->LanmanSetup.pResponseBuffer = NULL; SmbCeGetServerName( pExchange->SmbCeContext.pVNetRoot->pNetRoot->pSrvCall, &ServerName); TargetInformationSize = ServerName.Length; pTargetInformation = ServerName.Buffer; InTokenSize = sizeof(CHALLENGE_MESSAGE) + TargetInformationSize; NtlmInTokenSize = sizeof(NTLM_CHALLENGE_MESSAGE); if (pSession->pPassword != NULL) { NtlmInTokenSize += pSession->pPassword->Length; LsaFlags |= ISC_REQ_USE_SUPPLIED_CREDS; } if (pSession->pUserName != NULL) { NtlmInTokenSize += pSession->pUserName->Length; LsaFlags |= ISC_REQ_USE_SUPPLIED_CREDS; } if (pSession->pUserDomainName != NULL) { NtlmInTokenSize += pSession->pUserDomainName->Length; LsaFlags |= ISC_REQ_USE_SUPPLIED_CREDS; } // For Alignment purposes, we want InTokenSize rounded up to // the nearest word size. AllocateSize = ((InTokenSize + 3) & ~3) + NtlmInTokenSize; Status = ZwAllocateVirtualMemory( NtCurrentProcess(), &InToken, 0L, &AllocateSize, MEM_COMMIT, PAGE_READWRITE); if (!NT_SUCCESS(Status)) { try_return(Status); } // Allocate the output buffer OutputBufferDescriptorSize = sizeof(SecBufferDesc) + 2 * sizeof(SecBuffer); Status = ZwAllocateVirtualMemory( NtCurrentProcess(), &pOutputBufferDescriptor, 0L, &OutputBufferDescriptorSize, MEM_COMMIT, PAGE_READWRITE); if (!NT_SUCCESS(Status)) { try_return(Status); } pOutputBuffer = (SecBuffer *)(pOutputBufferDescriptor + 1); pResponseContext->LanmanSetup.pResponseBuffer = pOutputBufferDescriptor; RxDbgTrace(0,Dbg,("Allocate VM %08lx in process %8lx\n", InToken, NtCurrentProcess())); // partition off the NTLM in token part of the // buffer if (LsaFlags & ISC_REQ_USE_SUPPLIED_CREDS) { NtlmInToken = (PNTLM_CHALLENGE_MESSAGE) ((PUCHAR) InToken + InTokenSize); NtlmInToken = (PNTLM_CHALLENGE_MESSAGE) (((ULONG_PTR) NtlmInToken + 3) & ~3); RtlZeroMemory(NtlmInToken,NtlmInTokenSize); p = (PUCHAR) NtlmInToken + sizeof(NTLM_CHALLENGE_MESSAGE); } if(!IsCredentialHandleValid(&pSession->CredentialHandle)) { UNICODE_STRING LMName; TimeStamp LifeTime; LMName.Buffer = (PWSTR) InToken; LMName.Length = NTLMSP_NAME_SIZE; LMName.MaximumLength = LMName.Length; RtlCopyMemory( LMName.Buffer, NTLMSP_NAME, NTLMSP_NAME_SIZE); Status = AcquireCredentialsHandleW( NULL, &LMName, SECPKG_CRED_OUTBOUND, &pSession->LogonId, NULL, NULL, (PVOID)1, &pSession->CredentialHandle, &LifeTime); if(!NT_SUCCESS(Status)) { pSession->CredentialHandle.dwUpper = 0xffffffff; pSession->CredentialHandle.dwLower = 0xffffffff; try_return(Status); } } // Copy in the pass,user,domain if they were specified if(pSession->pPassword != NULL) { NtlmInToken->Password.Length = pSession->pPassword->Length; NtlmInToken->Password.MaximumLength = pSession->pPassword->Length; RtlCopyMemory( p, pSession->pPassword->Buffer, pSession->pPassword->Length); NtlmInToken->Password.Buffer = (ULONG) (p - (PUCHAR)NtlmInToken); p += pSession->pPassword->Length; } if(pSession->pUserName != NULL) { NtlmInToken->UserName.Length = pSession->pUserName->Length; NtlmInToken->UserName.MaximumLength = pSession->pUserName->Length; RtlCopyMemory( p, pSession->pUserName->Buffer, pSession->pUserName->Length); NtlmInToken->UserName.Buffer = (ULONG) (p - (PUCHAR)NtlmInToken); p += pSession->pUserName->Length; } if (pSession->pUserDomainName != NULL) { NtlmInToken->DomainName.Length = pSession->pUserDomainName->Length; NtlmInToken->DomainName.MaximumLength = pSession->pUserDomainName->Length; RtlCopyMemory( p, pSession->pUserDomainName->Buffer, pSession->pUserDomainName->Length); NtlmInToken->DomainName.Buffer = (ULONG) (p - (PUCHAR)NtlmInToken); p += pSession->pUserDomainName->Length; } RtlCopyMemory( InToken->Signature, NTLMSSP_SIGNATURE, sizeof(NTLMSSP_SIGNATURE)); InToken->MessageType = NtLmChallenge; InToken->NegotiateFlags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | NTLMSSP_REQUEST_INIT_RESPONSE | NTLMSSP_TARGET_TYPE_SERVER; RtlCopyMemory( InToken->Challenge, pServer->EncryptionKey, MSV1_0_CHALLENGE_LENGTH); InToken->TargetName.Length = InToken->TargetName.MaximumLength = (USHORT)TargetInformationSize; InToken->TargetName.Buffer = sizeof(CHALLENGE_MESSAGE); RtlCopyMemory( (PCHAR)InToken + sizeof(CHALLENGE_MESSAGE), pTargetInformation, TargetInformationSize); InputToken.pBuffers = InputBuffer; InputToken.cBuffers = 1; InputToken.ulVersion = 0; InputBuffer[0].pvBuffer = InToken; InputBuffer[0].cbBuffer = InTokenSize; InputBuffer[0].BufferType = SECBUFFER_TOKEN; if (LsaFlags & ISC_REQ_USE_SUPPLIED_CREDS) { InputToken.cBuffers = 2; InputBuffer[1].pvBuffer = NtlmInToken; InputBuffer[1].cbBuffer = NtlmInTokenSize; InputBuffer[1].BufferType = SECBUFFER_TOKEN; } pOutputBufferDescriptor->pBuffers = pOutputBuffer; pOutputBufferDescriptor->cBuffers = 2; pOutputBufferDescriptor->ulVersion = 0; pOutputBuffer[0].pvBuffer = NULL; pOutputBuffer[0].cbBuffer = 0; pOutputBuffer[0].BufferType = SECBUFFER_TOKEN; pOutputBuffer[1].pvBuffer = NULL; pOutputBuffer[1].cbBuffer = 0; pOutputBuffer[1].BufferType = SECBUFFER_TOKEN; Status = InitializeSecurityContextW( &pSession->CredentialHandle, (PCtxtHandle)NULL, NULL, LsaFlags, 0, SECURITY_NATIVE_DREP, &InputToken, 0, &pSession->SecurityContextHandle, pOutputBufferDescriptor, &FinalStatus, &Expiry); if(!NT_SUCCESS(Status)) { Status = MapSecurityError(Status); SmbCeLog(("IniSecCtxStat %lx %lx\n",SmbCeGetExchangeSessionEntry(pExchange),Status)); try_return(Status); } OutToken = (PAUTHENTICATE_MESSAGE) pOutputBuffer[0].pvBuffer; ASSERT(OutToken != NULL); RxDbgTrace(0,Dbg,("InitSecCtxt OutToken is %8lx\n", OutToken)); // The security response the pointers are encoded in terms off the offset // from the beginning of the buffer. Make the appropriate adjustments. if (ARGUMENT_PRESENT(pCaseSensitiveResponse)) { pCaseSensitiveResponse->Length = OutToken->NtChallengeResponse.Length; pCaseSensitiveResponse->MaximumLength = OutToken->NtChallengeResponse.MaximumLength; pCaseSensitiveResponse->Buffer = (PBYTE)OutToken + (ULONG_PTR)OutToken->NtChallengeResponse.Buffer; } if (ARGUMENT_PRESENT(pCaseInsensitiveResponse)) { pCaseInsensitiveResponse->Length = OutToken->LmChallengeResponse.Length; pCaseInsensitiveResponse->MaximumLength = OutToken->LmChallengeResponse.MaximumLength; pCaseInsensitiveResponse->Buffer = (PBYTE)OutToken + (ULONG_PTR)OutToken->LmChallengeResponse.Buffer; } if (pSession->pUserDomainName != NULL) { *pDomainName = *(pSession->pUserDomainName); } else { pDomainName->Length = OutToken->DomainName.Length; pDomainName->MaximumLength = pDomainName->Length; pDomainName->Buffer = (PWCHAR)((PBYTE)OutToken + (ULONG_PTR)OutToken->DomainName.Buffer); } if (pSession->pUserName != NULL) { *pUserName = *(pSession->pUserName); } else { pUserName->Length = OutToken->UserName.Length; pUserName->MaximumLength = OutToken->UserName.MaximumLength; pUserName->Buffer = (PWCHAR)((PBYTE)OutToken + (ULONG_PTR)OutToken->UserName.Buffer); } NtlmOutToken = pOutputBuffer[1].pvBuffer; if (NtlmOutToken != NULL) { RtlCopyMemory( pSession->UserSessionKey, NtlmOutToken->UserSessionKey, MSV1_0_USER_SESSION_KEY_LENGTH); RtlCopyMemory( pSession->LanmanSessionKey, NtlmOutToken->LanmanSessionKey, MSV1_0_LANMAN_SESSION_KEY_LENGTH); } try_exit:NOTHING; } finally { if (InToken != NULL) { NTSTATUS TemporaryStatus; TemporaryStatus = ZwFreeVirtualMemory( NtCurrentProcess(), &InToken, &AllocateSize, MEM_RELEASE); ASSERT (NT_SUCCESS(TemporaryStatus)); } if (!NT_SUCCESS(Status)) { BuildNtLanmanResponseEpilogue(pExchange, pResponseContext); } } return Status; } NTSTATUS BuildNtLanmanResponseEpilogue( PSMB_EXCHANGE pExchange, PSECURITY_RESPONSE_CONTEXT pResponseContext) { NTSTATUS Status = STATUS_SUCCESS; PSMBCE_SESSION pSession = SmbCeGetExchangeSession(pExchange); PAGED_CODE(); if (pResponseContext->LanmanSetup.pResponseBuffer != NULL) { ULONG i = 0; SecBufferDesc *pBufferDescriptor = (SecBufferDesc *)pResponseContext->LanmanSetup.pResponseBuffer; SecBuffer *pBuffer = pBufferDescriptor->pBuffers; ULONG_PTR BufferDescriptorSize = sizeof(SecBufferDesc) + 2 * sizeof(SecBuffer); for (i = 0; i < pBufferDescriptor->cBuffers; i++) { if (pBuffer[i].pvBuffer != NULL) { FreeContextBuffer(pBuffer[i].pvBuffer); } } Status = ZwFreeVirtualMemory( NtCurrentProcess(), &pBufferDescriptor, &BufferDescriptorSize, MEM_RELEASE); pResponseContext->LanmanSetup.pResponseBuffer = NULL; } return Status; } VOID UninitializeSecurityContextsForSession( PSMBCE_SESSION pSession) { CtxtHandle CredentialHandle,SecurityContextHandle,InvalidHandle; SmbCeLog(("UninitSecCont %lx\n",pSession)); InvalidHandle.dwUpper = 0xffffffff; InvalidHandle.dwLower = 0xffffffff; SmbCeAcquireSpinLock(); CredentialHandle = pSession->CredentialHandle; pSession->CredentialHandle = InvalidHandle; SecurityContextHandle = pSession->SecurityContextHandle; pSession->SecurityContextHandle = InvalidHandle; SmbCeReleaseSpinLock(); if (IsCredentialHandleValid(&CredentialHandle)) { FreeCredentialsHandle(&CredentialHandle); } if (IsSecurityContextHandleValid(&SecurityContextHandle)) { DeleteSecurityContext(&SecurityContextHandle); } } NTSTATUS BuildSessionSetupSecurityInformation( PSMB_EXCHANGE pExchange, PBYTE pSmbBuffer, PULONG pSmbBufferSize) /*++ Routine Description: This routine builds the security related information for the session setup SMB Arguments: pServer - the server instance pSmbBuffer - the SMB buffer pSmbBufferSize - the size of the buffer on input ( modified to size remaining on output) Return Value: RXSTATUS - The return status for the operation Notes: Eventhough the genral structure of the code tries to isolate dialect specific issues as much as possible this routine takes the opposite approach. This is because of the preamble and prologue to security interaction which far outweigh the dialect specific work required to be done. Therefore in the interests of a smaller footprint this approach has been adopted. --*/ { NTSTATUS Status; UNICODE_STRING UserName; UNICODE_STRING DomainName; STRING CaseSensitiveResponse; STRING CaseInsensitiveResponse; PSMBCE_SERVER pServer = SmbCeGetExchangeServer(pExchange); PSMBCE_SESSION pSession = SmbCeGetExchangeSession(pExchange); PSMBCEDB_SERVER_ENTRY pServerEntry = SmbCeGetExchangeServerEntry(pExchange); SECURITY_RESPONSE_CONTEXT ResponseContext; PAGED_CODE(); RxDbgTrace( +1, Dbg, ("BuildSessionSetupSecurityInformation -- Entry\n")); Status = BuildNtLanmanResponsePrologue( pExchange, &UserName, &DomainName, &CaseSensitiveResponse, &CaseInsensitiveResponse, &ResponseContext); if (Status == STATUS_SUCCESS) { // If the security package returns us the credentials corresponding to a // NULL session mark the session as a NULL session. This will avoid // conflicts with the user trying to present the credentials for a NULL // session, i.e., explicitly specified zero length passwords, user name // and domain name. RxDbgTrace(0,Dbg,("Session %lx UN Length %lx DN length %ld IR length %ld SR length %ld\n", pSession,UserName.Length,DomainName.Length, CaseInsensitiveResponse.Length,CaseSensitiveResponse.Length)); if ((UserName.Length == 0) && (DomainName.Length == 0) && (CaseSensitiveResponse.Length == 0) && (CaseInsensitiveResponse.Length == 1)) { RxDbgTrace(0,Dbg,("Implicit NULL session setup\n")); pSession->Flags |= SMBCE_SESSION_FLAGS_NULL_CREDENTIALS; } } if (NT_SUCCESS(Status)) { PBYTE pBuffer = pSmbBuffer; ULONG BufferSize = *pSmbBufferSize; if ((pServer->Dialect == NTLANMAN_DIALECT) && (pServer->EncryptPasswords)) { PREQ_NT_SESSION_SETUP_ANDX pNtSessionSetupReq = (PREQ_NT_SESSION_SETUP_ANDX)pSmbBuffer; // It it is a NT server both the case insensitive and case sensitive passwords // need to be copied. for share-level, just copy a token 1-byte NULL password // Position the buffer for copying the password. pBuffer += FIELD_OFFSET(REQ_NT_SESSION_SETUP_ANDX,Buffer); BufferSize -= FIELD_OFFSET(REQ_NT_SESSION_SETUP_ANDX,Buffer); if (pServer->SecurityMode == SECURITY_MODE_USER_LEVEL){ RxDbgTrace( 0, Dbg, ("BuildSessionSetupSecurityInformation -- NtUserPasswords\n")); SmbPutUshort( &pNtSessionSetupReq->CaseInsensitivePasswordLength, CaseInsensitiveResponse.Length); SmbPutUshort( &pNtSessionSetupReq->CaseSensitivePasswordLength, CaseSensitiveResponse.Length); Status = SmbPutString( &pBuffer, &CaseInsensitiveResponse, &BufferSize); if (NT_SUCCESS(Status)) { Status = SmbPutString( &pBuffer, &CaseSensitiveResponse, &BufferSize); } } else { RxDbgTrace( 0, Dbg, ("BuildSessionSetupSecurityInformation -- NtSharePasswords\n")); SmbPutUshort(&pNtSessionSetupReq->CaseInsensitivePasswordLength, 1); SmbPutUshort(&pNtSessionSetupReq->CaseSensitivePasswordLength, 1); *pBuffer = 0; *(pBuffer+1) = 0; pBuffer += 2; BufferSize -= 2; } } else { PREQ_SESSION_SETUP_ANDX pSessionSetupReq = (PREQ_SESSION_SETUP_ANDX)pSmbBuffer; // Position the buffer for copying the password. pBuffer += FIELD_OFFSET(REQ_SESSION_SETUP_ANDX,Buffer); BufferSize -= FIELD_OFFSET(REQ_SESSION_SETUP_ANDX,Buffer); if ( (pServer->SecurityMode == SECURITY_MODE_USER_LEVEL) && (CaseInsensitiveResponse.Length > 0)) { if (pServer->EncryptPasswords) { // For other lanman servers only the case insensitive password is required. SmbPutUshort( &pSessionSetupReq->PasswordLength, CaseInsensitiveResponse.Length); // Copy the password Status = SmbPutString( &pBuffer, &CaseInsensitiveResponse, &BufferSize); } else { if (EnablePlainTextPassword) { if (pSession->pPassword != NULL) { SmbPutUshort( &pSessionSetupReq->PasswordLength, pSession->pPassword->Length/2 + 1); Status = SmbPutUnicodeStringAsOemString( &pBuffer, pSession->pPassword, &BufferSize); } else { SmbPutUshort(&pSessionSetupReq->PasswordLength,1); *pBuffer++ = '\0'; BufferSize -= sizeof(CHAR); } } else { Status = STATUS_LOGON_FAILURE; } } } else { // Share level security. Send a null string for the password SmbPutUshort(&pSessionSetupReq->PasswordLength,1); *pBuffer++ = '\0'; BufferSize -= sizeof(CHAR); } } // The User name and the domain name strings can be either copied from // the information returned in the request response or the information // that is already present in the session entry. if (NT_SUCCESS(Status)) { if ((pServer->Dialect == NTLANMAN_DIALECT) && (pServer->NtServer.NtCapabilities & CAP_UNICODE)) { // Copy the account/domain names as UNICODE strings PBYTE pTempBuffer = pBuffer; RxDbgTrace( 0, Dbg, ("BuildSessionSetupSecurityInformation -- account/domain as unicode\n")); pBuffer = ALIGN_SMB_WSTR(pBuffer); BufferSize -= (ULONG)(pBuffer - pTempBuffer); Status = SmbPutUnicodeString( &pBuffer, &UserName, &BufferSize); if (NT_SUCCESS(Status)) { Status = SmbPutUnicodeString( &pBuffer, &DomainName, &BufferSize); } } else { // Copy the account/domain names as ASCII strings. RxDbgTrace( 0, Dbg, ("BuildSessionSetupSecurityInformation -- account/domain as ascii\n")); Status = SmbPutUnicodeStringAsOemString( &pBuffer, &UserName, &BufferSize); if (NT_SUCCESS(Status)) { Status = SmbPutUnicodeStringAsOemString( &pBuffer, &DomainName, &BufferSize); } } } if (NT_SUCCESS(Status)) { *pSmbBufferSize = BufferSize; } } BuildNtLanmanResponseEpilogue(pExchange, &ResponseContext); // Detach from the rdr process. RxDbgTrace( -1, Dbg, ("BuildSessionSetupSecurityInformation -- Exit, status=%08lx\n",Status)); return Status; } NTSTATUS BuildTreeConnectSecurityInformation( PSMB_EXCHANGE pExchange, PBYTE pBuffer, PBYTE pPasswordLength, PULONG pSmbBufferSize) /*++ Routine Description: This routine builds the security related information for the session setup SMB Arguments: pServer - the server instance pLogonId - the logon id. for which the session is being setup pPassword - the user supplied password if any pBuffer - the password buffer pPasswordLength - where the password length is to be stored pSmbBufferSize - the size of the buffer on input ( modified to size remaining on output) Return Value: NTSTATUS - The return status for the operation Notes: Eventhough the genral structure of the code tries to isolate dialect specific issues as much as possible this routine takes the opposite approach. This is because of the preamble and prologue to security interaction which far outweigh the dialect specific work required to be done. Therefore in the interests of a smaller footprint this approach has been adopted. --*/ { NTSTATUS FinalStatus,Status; UNICODE_STRING UserName,DomainName; STRING CaseSensitiveChallengeResponse,CaseInsensitiveChallengeResponse; SECURITY_RESPONSE_CONTEXT ResponseContext; ULONG PasswordLength = 0; PSMBCE_SERVER pServer = SmbCeGetExchangeServer(pExchange); PSMBCE_SESSION pSession = SmbCeGetExchangeSession(pExchange); PAGED_CODE(); Status = STATUS_SUCCESS; if (pServer->EncryptPasswords) { Status = BuildNtLanmanResponsePrologue( pExchange, &UserName, &DomainName, &CaseSensitiveChallengeResponse, &CaseInsensitiveChallengeResponse, &ResponseContext); if (NT_SUCCESS(Status)) { if (FlagOn(pServer->DialectFlags,DF_MIXEDCASEPW)) { RxDbgTrace( 0, Dbg, ("BuildTreeConnectSecurityInformation -- case sensitive password\n")); // Copy the password length onto the SMB buffer PasswordLength = CaseSensitiveChallengeResponse.Length; // Copy the password Status = SmbPutString( &pBuffer, &CaseSensitiveChallengeResponse, pSmbBufferSize); } else { RxDbgTrace( 0, Dbg, ("BuildTreeConnectSecurityInformation -- case insensitive password\n")); // Copy the password length onto the SMB buffer PasswordLength = CaseInsensitiveChallengeResponse.Length; // Copy the password Status = SmbPutString( &pBuffer, &CaseInsensitiveChallengeResponse, pSmbBufferSize); } BuildNtLanmanResponseEpilogue(pExchange, &ResponseContext); } } else { if (pSession->pPassword == NULL) { // The logon password cannot be sent as plain text. Send a Null string as password. PasswordLength = 1; if (*pSmbBufferSize >= 1) { *((PCHAR)pBuffer) = '\0'; pBuffer += sizeof(CHAR); Status = STATUS_SUCCESS; } else { Status = STATUS_BUFFER_OVERFLOW; } } else { if (EnablePlainTextPassword) { OEM_STRING OemString; OemString.Length = OemString.MaximumLength = (USHORT)(*pSmbBufferSize - sizeof(CHAR)); OemString.Buffer = pBuffer; Status = RtlUnicodeStringToOemString( &OemString, pSession->pPassword, FALSE); if (NT_SUCCESS(Status)) { PasswordLength = OemString.Length+1; } } else { Status = STATUS_LOGON_FAILURE; } } // reduce the byte count *pSmbBufferSize -= PasswordLength; } SmbPutUshort(pPasswordLength,(USHORT)PasswordLength); return Status; }