mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-25 16:37:42 +01:00
639 lines
22 KiB
C
639 lines
22 KiB
C
/** @file
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Implementation of EFI TLS Protocol Interfaces.
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Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "TlsImpl.h"
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EFI_TLS_PROTOCOL mTlsProtocol = {
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TlsSetSessionData,
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TlsGetSessionData,
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TlsBuildResponsePacket,
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TlsProcessPacket
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};
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/**
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Set TLS session data.
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The SetSessionData() function set data for a new TLS session. All session data should
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be set before BuildResponsePacket() invoked.
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@param[in] This Pointer to the EFI_TLS_PROTOCOL instance.
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@param[in] DataType TLS session data type.
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@param[in] Data Pointer to session data.
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@param[in] DataSize Total size of session data.
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@retval EFI_SUCCESS The TLS session data is set successfully.
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@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
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This is NULL.
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Data is NULL.
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DataSize is 0.
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DataSize is invalid for DataType.
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@retval EFI_UNSUPPORTED The DataType is unsupported.
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@retval EFI_ACCESS_DENIED If the DataType is one of below:
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EfiTlsClientRandom
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EfiTlsServerRandom
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EfiTlsKeyMaterial
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@retval EFI_NOT_READY Current TLS session state is NOT
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EfiTlsSessionStateNotStarted.
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@retval EFI_OUT_OF_RESOURCES Required system resources could not be allocated.
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**/
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EFI_STATUS
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EFIAPI
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TlsSetSessionData (
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IN EFI_TLS_PROTOCOL *This,
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IN EFI_TLS_SESSION_DATA_TYPE DataType,
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IN VOID *Data,
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IN UINTN DataSize
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)
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{
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EFI_STATUS Status;
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TLS_INSTANCE *Instance;
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UINT16 *CipherId;
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CONST EFI_TLS_CIPHER *TlsCipherList;
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UINTN CipherCount;
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UINTN Index;
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EFI_TPL OldTpl;
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Status = EFI_SUCCESS;
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CipherId = NULL;
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if (This == NULL || Data == NULL || DataSize == 0) {
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return EFI_INVALID_PARAMETER;
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}
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Instance = TLS_INSTANCE_FROM_PROTOCOL (This);
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if (DataType != EfiTlsSessionState && Instance->TlsSessionState != EfiTlsSessionNotStarted){
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Status = EFI_NOT_READY;
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goto ON_EXIT;
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}
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switch (DataType) {
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//
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// Session Configuration
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//
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case EfiTlsVersion:
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if (DataSize != sizeof (EFI_TLS_VERSION)) {
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Status = EFI_INVALID_PARAMETER;
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goto ON_EXIT;
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}
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Status = TlsSetVersion (Instance->TlsConn, ((EFI_TLS_VERSION *) Data)->Major, ((EFI_TLS_VERSION *) Data)->Minor);
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break;
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case EfiTlsConnectionEnd:
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if (DataSize != sizeof (EFI_TLS_CONNECTION_END)) {
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Status = EFI_INVALID_PARAMETER;
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goto ON_EXIT;
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}
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Status = TlsSetConnectionEnd (Instance->TlsConn, *((EFI_TLS_CONNECTION_END *) Data));
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break;
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case EfiTlsCipherList:
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if (DataSize % sizeof (EFI_TLS_CIPHER) != 0) {
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Status = EFI_INVALID_PARAMETER;
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goto ON_EXIT;
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}
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CipherId = AllocatePool (DataSize);
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if (CipherId == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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goto ON_EXIT;
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}
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TlsCipherList = (CONST EFI_TLS_CIPHER *) Data;
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CipherCount = DataSize / sizeof (EFI_TLS_CIPHER);
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for (Index = 0; Index < CipherCount; Index++) {
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CipherId[Index] = ((TlsCipherList[Index].Data1 << 8) |
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TlsCipherList[Index].Data2);
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}
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Status = TlsSetCipherList (Instance->TlsConn, CipherId, CipherCount);
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FreePool (CipherId);
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break;
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case EfiTlsCompressionMethod:
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//
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// TLS seems only define one CompressionMethod.null, which specifies that data exchanged via the
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// record protocol will not be compressed.
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// More information from OpenSSL: http://www.openssl.org/docs/manmaster/ssl/SSL_COMP_add_compression_method.html
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// The TLS RFC does however not specify compression methods or their corresponding identifiers,
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// so there is currently no compatible way to integrate compression with unknown peers.
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// It is therefore currently not recommended to integrate compression into applications.
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// Applications for non-public use may agree on certain compression methods.
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// Using different compression methods with the same identifier will lead to connection failure.
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//
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for (Index = 0; Index < DataSize / sizeof (EFI_TLS_COMPRESSION); Index++) {
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Status = TlsSetCompressionMethod (*((UINT8 *) Data + Index));
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if (EFI_ERROR (Status)) {
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break;
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}
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}
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break;
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case EfiTlsExtensionData:
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Status = EFI_UNSUPPORTED;
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goto ON_EXIT;
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case EfiTlsVerifyMethod:
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if (DataSize != sizeof (EFI_TLS_VERIFY)) {
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Status = EFI_INVALID_PARAMETER;
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goto ON_EXIT;
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}
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TlsSetVerify (Instance->TlsConn, *((UINT32 *) Data));
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break;
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case EfiTlsSessionID:
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if (DataSize != sizeof (EFI_TLS_SESSION_ID)) {
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Status = EFI_INVALID_PARAMETER;
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goto ON_EXIT;
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}
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Status = TlsSetSessionId (
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Instance->TlsConn,
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((EFI_TLS_SESSION_ID *) Data)->Data,
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((EFI_TLS_SESSION_ID *) Data)->Length
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);
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break;
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case EfiTlsSessionState:
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if (DataSize != sizeof (EFI_TLS_SESSION_STATE)) {
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Status = EFI_INVALID_PARAMETER;
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goto ON_EXIT;
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}
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Instance->TlsSessionState = *(EFI_TLS_SESSION_STATE *) Data;
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break;
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//
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// Session information
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//
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case EfiTlsClientRandom:
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Status = EFI_ACCESS_DENIED;
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break;
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case EfiTlsServerRandom:
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Status = EFI_ACCESS_DENIED;
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break;
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case EfiTlsKeyMaterial:
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Status = EFI_ACCESS_DENIED;
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break;
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//
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// Unsupported type.
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//
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default:
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Status = EFI_UNSUPPORTED;
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}
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ON_EXIT:
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Get TLS session data.
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The GetSessionData() function return the TLS session information.
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@param[in] This Pointer to the EFI_TLS_PROTOCOL instance.
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@param[in] DataType TLS session data type.
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@param[in, out] Data Pointer to session data.
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@param[in, out] DataSize Total size of session data. On input, it means
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the size of Data buffer. On output, it means the size
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of copied Data buffer if EFI_SUCCESS, and means the
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size of desired Data buffer if EFI_BUFFER_TOO_SMALL.
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@retval EFI_SUCCESS The TLS session data is got successfully.
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@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
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This is NULL.
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DataSize is NULL.
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Data is NULL if *DataSize is not zero.
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@retval EFI_UNSUPPORTED The DataType is unsupported.
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@retval EFI_NOT_FOUND The TLS session data is not found.
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@retval EFI_NOT_READY The DataType is not ready in current session state.
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@retval EFI_BUFFER_TOO_SMALL The buffer is too small to hold the data.
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**/
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EFI_STATUS
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EFIAPI
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TlsGetSessionData (
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IN EFI_TLS_PROTOCOL *This,
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IN EFI_TLS_SESSION_DATA_TYPE DataType,
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IN OUT VOID *Data, OPTIONAL
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IN OUT UINTN *DataSize
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)
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{
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EFI_STATUS Status;
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TLS_INSTANCE *Instance;
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EFI_TPL OldTpl;
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Status = EFI_SUCCESS;
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if (This == NULL || DataSize == NULL || (Data == NULL && *DataSize != 0)) {
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return EFI_INVALID_PARAMETER;
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}
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Instance = TLS_INSTANCE_FROM_PROTOCOL (This);
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if (Instance->TlsSessionState == EfiTlsSessionNotStarted &&
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(DataType == EfiTlsSessionID || DataType == EfiTlsClientRandom ||
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DataType == EfiTlsServerRandom || DataType == EfiTlsKeyMaterial)) {
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Status = EFI_NOT_READY;
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goto ON_EXIT;
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}
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switch (DataType) {
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case EfiTlsVersion:
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if (*DataSize < sizeof (EFI_TLS_VERSION)) {
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*DataSize = sizeof (EFI_TLS_VERSION);
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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*DataSize = sizeof (EFI_TLS_VERSION);
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*((UINT16 *) Data) = HTONS (TlsGetVersion (Instance->TlsConn));
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break;
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case EfiTlsConnectionEnd:
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if (*DataSize < sizeof (EFI_TLS_CONNECTION_END)) {
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*DataSize = sizeof (EFI_TLS_CONNECTION_END);
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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*DataSize = sizeof (EFI_TLS_CONNECTION_END);
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*((UINT8 *) Data) = TlsGetConnectionEnd (Instance->TlsConn);
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break;
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case EfiTlsCipherList:
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//
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// Get the current session cipher suite.
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//
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if (*DataSize < sizeof (EFI_TLS_CIPHER)) {
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*DataSize = sizeof (EFI_TLS_CIPHER);
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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*DataSize = sizeof(EFI_TLS_CIPHER);
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Status = TlsGetCurrentCipher (Instance->TlsConn, (UINT16 *) Data);
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*((UINT16 *) Data) = HTONS (*((UINT16 *) Data));
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break;
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case EfiTlsCompressionMethod:
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//
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// Get the current session compression method.
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//
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if (*DataSize < sizeof (EFI_TLS_COMPRESSION)) {
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*DataSize = sizeof (EFI_TLS_COMPRESSION);
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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*DataSize = sizeof (EFI_TLS_COMPRESSION);
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Status = TlsGetCurrentCompressionId (Instance->TlsConn, (UINT8 *) Data);
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break;
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case EfiTlsExtensionData:
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Status = EFI_UNSUPPORTED;
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goto ON_EXIT;
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case EfiTlsVerifyMethod:
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if (*DataSize < sizeof (EFI_TLS_VERIFY)) {
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*DataSize = sizeof (EFI_TLS_VERIFY);
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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*DataSize = sizeof (EFI_TLS_VERIFY);
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*((UINT32 *) Data) = TlsGetVerify (Instance->TlsConn);
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break;
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case EfiTlsSessionID:
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if (*DataSize < sizeof (EFI_TLS_SESSION_ID)) {
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*DataSize = sizeof (EFI_TLS_SESSION_ID);
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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*DataSize = sizeof (EFI_TLS_SESSION_ID);
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Status = TlsGetSessionId (
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Instance->TlsConn,
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((EFI_TLS_SESSION_ID *) Data)->Data,
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&(((EFI_TLS_SESSION_ID *) Data)->Length)
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);
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break;
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case EfiTlsSessionState:
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if (*DataSize < sizeof (EFI_TLS_SESSION_STATE)) {
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*DataSize = sizeof (EFI_TLS_SESSION_STATE);
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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*DataSize = sizeof (EFI_TLS_SESSION_STATE);
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CopyMem (Data, &Instance->TlsSessionState, *DataSize);
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break;
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case EfiTlsClientRandom:
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if (*DataSize < sizeof (EFI_TLS_RANDOM)) {
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*DataSize = sizeof (EFI_TLS_RANDOM);
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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*DataSize = sizeof (EFI_TLS_RANDOM);
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TlsGetClientRandom (Instance->TlsConn, (UINT8 *) Data);
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break;
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case EfiTlsServerRandom:
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if (*DataSize < sizeof (EFI_TLS_RANDOM)) {
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*DataSize = sizeof (EFI_TLS_RANDOM);
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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*DataSize = sizeof (EFI_TLS_RANDOM);
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TlsGetServerRandom (Instance->TlsConn, (UINT8 *) Data);
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break;
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case EfiTlsKeyMaterial:
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if (*DataSize < sizeof (EFI_TLS_MASTER_SECRET)) {
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*DataSize = sizeof (EFI_TLS_MASTER_SECRET);
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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*DataSize = sizeof (EFI_TLS_MASTER_SECRET);
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Status = TlsGetKeyMaterial (Instance->TlsConn, (UINT8 *) Data);
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break;
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//
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// Unsupported type.
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//
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default:
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Status = EFI_UNSUPPORTED;
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}
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ON_EXIT:
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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/**
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Build response packet according to TLS state machine. This function is only valid for
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alert, handshake and change_cipher_spec content type.
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The BuildResponsePacket() function builds TLS response packet in response to the TLS
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request packet specified by RequestBuffer and RequestSize. If RequestBuffer is NULL and
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RequestSize is 0, and TLS session status is EfiTlsSessionNotStarted, the TLS session
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will be initiated and the response packet needs to be ClientHello. If RequestBuffer is
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NULL and RequestSize is 0, and TLS session status is EfiTlsSessionClosing, the TLS
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session will be closed and response packet needs to be CloseNotify. If RequestBuffer is
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NULL and RequestSize is 0, and TLS session status is EfiTlsSessionError, the TLS
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session has errors and the response packet needs to be Alert message based on error
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type.
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@param[in] This Pointer to the EFI_TLS_PROTOCOL instance.
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@param[in] RequestBuffer Pointer to the most recently received TLS packet. NULL
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means TLS need initiate the TLS session and response
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packet need to be ClientHello.
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@param[in] RequestSize Packet size in bytes for the most recently received TLS
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packet. 0 is only valid when RequestBuffer is NULL.
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@param[out] Buffer Pointer to the buffer to hold the built packet.
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@param[in, out] BufferSize Pointer to the buffer size in bytes. On input, it is
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the buffer size provided by the caller. On output, it
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is the buffer size in fact needed to contain the
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packet.
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@retval EFI_SUCCESS The required TLS packet is built successfully.
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@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
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This is NULL.
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RequestBuffer is NULL but RequestSize is NOT 0.
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RequestSize is 0 but RequestBuffer is NOT NULL.
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BufferSize is NULL.
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Buffer is NULL if *BufferSize is not zero.
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@retval EFI_BUFFER_TOO_SMALL BufferSize is too small to hold the response packet.
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@retval EFI_NOT_READY Current TLS session state is NOT ready to build
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ResponsePacket.
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@retval EFI_ABORTED Something wrong build response packet.
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**/
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EFI_STATUS
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EFIAPI
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TlsBuildResponsePacket (
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IN EFI_TLS_PROTOCOL *This,
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IN UINT8 *RequestBuffer, OPTIONAL
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IN UINTN RequestSize, OPTIONAL
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OUT UINT8 *Buffer, OPTIONAL
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IN OUT UINTN *BufferSize
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)
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{
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EFI_STATUS Status;
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TLS_INSTANCE *Instance;
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EFI_TPL OldTpl;
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Status = EFI_SUCCESS;
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if ((This == NULL) || (BufferSize == NULL) ||
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(RequestBuffer == NULL && RequestSize != 0) ||
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(RequestBuffer != NULL && RequestSize == 0) ||
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(Buffer == NULL && *BufferSize !=0)) {
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return EFI_INVALID_PARAMETER;
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}
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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Instance = TLS_INSTANCE_FROM_PROTOCOL (This);
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if(RequestBuffer == NULL && RequestSize == 0) {
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switch (Instance->TlsSessionState) {
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case EfiTlsSessionNotStarted:
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//
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// ClientHello.
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//
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Status = TlsDoHandshake (
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Instance->TlsConn,
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NULL,
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0,
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Buffer,
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BufferSize
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);
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if (EFI_ERROR (Status)) {
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goto ON_EXIT;
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}
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//
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// *BufferSize should not be zero when ClientHello.
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//
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if (*BufferSize == 0) {
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Status = EFI_ABORTED;
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goto ON_EXIT;
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}
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Instance->TlsSessionState = EfiTlsSessionHandShaking;
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break;
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case EfiTlsSessionClosing:
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//
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// TLS session will be closed and response packet needs to be CloseNotify.
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//
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Status = TlsCloseNotify (
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Instance->TlsConn,
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Buffer,
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BufferSize
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);
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if (EFI_ERROR (Status)) {
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goto ON_EXIT;
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}
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//
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// *BufferSize should not be zero when build CloseNotify message.
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//
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if (*BufferSize == 0) {
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Status = EFI_ABORTED;
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goto ON_EXIT;
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}
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break;
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case EfiTlsSessionError:
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//
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// TLS session has errors and the response packet needs to be Alert
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// message based on error type.
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//
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Status = TlsHandleAlert (
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Instance->TlsConn,
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NULL,
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0,
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Buffer,
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BufferSize
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);
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if (EFI_ERROR (Status)) {
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goto ON_EXIT;
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}
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break;
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default:
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//
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// Current TLS session state is NOT ready to build ResponsePacket.
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//
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Status = EFI_NOT_READY;
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}
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} else {
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//
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// 1. Received packet may have multiple TLS record messages.
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// 2. One TLS record message may have multiple handshake protocol.
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// 3. Some errors may be happened in handshake.
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|
// TlsDoHandshake() can handle all of those cases.
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//
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if (TlsInHandshake (Instance->TlsConn)) {
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Status = TlsDoHandshake (
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Instance->TlsConn,
|
|
RequestBuffer,
|
|
RequestSize,
|
|
Buffer,
|
|
BufferSize
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
goto ON_EXIT;
|
|
}
|
|
|
|
if (!TlsInHandshake (Instance->TlsConn)) {
|
|
Instance->TlsSessionState = EfiTlsSessionDataTransferring;
|
|
}
|
|
} else {
|
|
//
|
|
// Must be alert message, Decrypt it and build the ResponsePacket.
|
|
//
|
|
ASSERT (((TLS_RECORD_HEADER *) RequestBuffer)->ContentType == TlsContentTypeAlert);
|
|
|
|
Status = TlsHandleAlert (
|
|
Instance->TlsConn,
|
|
RequestBuffer,
|
|
RequestSize,
|
|
Buffer,
|
|
BufferSize
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
if (Status != EFI_BUFFER_TOO_SMALL) {
|
|
Instance->TlsSessionState = EfiTlsSessionError;
|
|
}
|
|
|
|
goto ON_EXIT;
|
|
}
|
|
}
|
|
}
|
|
|
|
ON_EXIT:
|
|
gBS->RestoreTPL (OldTpl);
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Decrypt or encrypt TLS packet during session. This function is only valid after
|
|
session connected and for application_data content type.
|
|
|
|
The ProcessPacket () function process each inbound or outbound TLS APP packet.
|
|
|
|
@param[in] This Pointer to the EFI_TLS_PROTOCOL instance.
|
|
@param[in, out] FragmentTable Pointer to a list of fragment. The caller will take
|
|
responsible to handle the original FragmentTable while
|
|
it may be reallocated in TLS driver. If CryptMode is
|
|
EfiTlsEncrypt, on input these fragments contain the TLS
|
|
header and plain text TLS APP payload; on output these
|
|
fragments contain the TLS header and cipher text TLS
|
|
APP payload. If CryptMode is EfiTlsDecrypt, on input
|
|
these fragments contain the TLS header and cipher text
|
|
TLS APP payload; on output these fragments contain the
|
|
TLS header and plain text TLS APP payload.
|
|
@param[in] FragmentCount Number of fragment.
|
|
@param[in] CryptMode Crypt mode.
|
|
|
|
@retval EFI_SUCCESS The operation completed successfully.
|
|
@retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:
|
|
This is NULL.
|
|
FragmentTable is NULL.
|
|
FragmentCount is NULL.
|
|
CryptoMode is invalid.
|
|
@retval EFI_NOT_READY Current TLS session state is NOT
|
|
EfiTlsSessionDataTransferring.
|
|
@retval EFI_ABORTED Something wrong decryption the message. TLS session
|
|
status will become EfiTlsSessionError. The caller need
|
|
call BuildResponsePacket() to generate Error Alert
|
|
message and send it out.
|
|
@retval EFI_OUT_OF_RESOURCES No enough resource to finish the operation.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
TlsProcessPacket (
|
|
IN EFI_TLS_PROTOCOL *This,
|
|
IN OUT EFI_TLS_FRAGMENT_DATA **FragmentTable,
|
|
IN UINT32 *FragmentCount,
|
|
IN EFI_TLS_CRYPT_MODE CryptMode
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
TLS_INSTANCE *Instance;
|
|
|
|
EFI_TPL OldTpl;
|
|
|
|
Status = EFI_SUCCESS;
|
|
|
|
if (This == NULL || FragmentTable == NULL || FragmentCount == NULL) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
|
|
|
|
Instance = TLS_INSTANCE_FROM_PROTOCOL (This);
|
|
|
|
if (Instance->TlsSessionState != EfiTlsSessionDataTransferring) {
|
|
Status = EFI_NOT_READY;
|
|
goto ON_EXIT;
|
|
}
|
|
|
|
//
|
|
// Packet sent or received may have multiple TLS record messages (Application data type).
|
|
// So,on input these fragments contain the TLS header and TLS APP payload;
|
|
// on output these fragments also contain the TLS header and TLS APP payload.
|
|
//
|
|
switch (CryptMode) {
|
|
case EfiTlsEncrypt:
|
|
Status = TlsEncryptPacket (Instance, FragmentTable, FragmentCount);
|
|
break;
|
|
case EfiTlsDecrypt:
|
|
Status = TlsDecryptPacket (Instance, FragmentTable, FragmentCount);
|
|
break;
|
|
default:
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
ON_EXIT:
|
|
gBS->RestoreTPL (OldTpl);
|
|
return Status;
|
|
}
|
|
|