diff options
Diffstat (limited to 'SecurityPkg/Library/DxeDeferImageLoadLib/DxeDeferImageLoadLib.c')
| -rw-r--r-- | SecurityPkg/Library/DxeDeferImageLoadLib/DxeDeferImageLoadLib.c | 208 |
1 files changed, 104 insertions, 104 deletions
diff --git a/SecurityPkg/Library/DxeDeferImageLoadLib/DxeDeferImageLoadLib.c b/SecurityPkg/Library/DxeDeferImageLoadLib/DxeDeferImageLoadLib.c index 02a87f9077..41ad52563e 100644 --- a/SecurityPkg/Library/DxeDeferImageLoadLib/DxeDeferImageLoadLib.c +++ b/SecurityPkg/Library/DxeDeferImageLoadLib/DxeDeferImageLoadLib.c @@ -1,13 +1,13 @@ /** @file
Implement defer image load services for user identification in UEFI2.2.
-Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
+Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
@@ -33,9 +33,9 @@ EFI_DEFERRED_IMAGE_LOAD_PROTOCOL gDeferredImageLoad = { Get the image type.
@param[in] File This is a pointer to the device path of the file
- that is being dispatched.
+ that is being dispatched.
- @return UINT32 Image Type
+ @return UINT32 Image Type
**/
UINT32
@@ -44,7 +44,7 @@ GetFileType ( )
{
EFI_STATUS Status;
- EFI_HANDLE DeviceHandle;
+ EFI_HANDLE DeviceHandle;
EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
@@ -110,7 +110,7 @@ GetFileType ( }
//
- // File is not in a Firmware Volume or on a Block I/O device, so check to see if
+ // File is not in a Firmware Volume or on a Block I/O device, so check to see if
// the device path supports the Simple File System Protocol.
//
DeviceHandle = NULL;
@@ -129,12 +129,12 @@ GetFileType ( //
// File is not from an FV, Block I/O or Simple File System, so the only options
- // left are a PCI Option ROM and a Load File Protocol such as a PXE Boot from a NIC.
+ // left are a PCI Option ROM and a Load File Protocol such as a PXE Boot from a NIC.
//
TempDevicePath = (EFI_DEVICE_PATH_PROTOCOL *)File;
while (!IsDevicePathEndType (TempDevicePath)) {
switch (DevicePathType (TempDevicePath)) {
-
+
case MEDIA_DEVICE_PATH:
if (DevicePathSubType (TempDevicePath) == MEDIA_RELATIVE_OFFSET_RANGE_DP) {
return IMAGE_FROM_OPTION_ROM;
@@ -144,7 +144,7 @@ GetFileType ( case MESSAGING_DEVICE_PATH:
if (DevicePathSubType(TempDevicePath) == MSG_MAC_ADDR_DP) {
return IMAGE_FROM_REMOVABLE_MEDIA;
- }
+ }
break;
default:
@@ -152,7 +152,7 @@ GetFileType ( }
TempDevicePath = NextDevicePathNode (TempDevicePath);
}
- return IMAGE_UNKNOWN;
+ return IMAGE_UNKNOWN;
}
@@ -191,7 +191,7 @@ GetAccessControl ( if (EFI_ERROR (Status)) {
return EFI_NOT_FOUND;
}
-
+
//
// Get current user access information.
//
@@ -234,12 +234,12 @@ GetAccessControl ( if (EFI_ERROR (Status)) {
break;
}
-
+
ASSERT (Info != NULL);
if (Info->InfoType != EFI_USER_INFO_ACCESS_POLICY_RECORD) {
continue;
}
-
+
//
// Get specified access information.
//
@@ -256,7 +256,7 @@ GetAccessControl ( CheckLen += Access->Size;
}
}
-
+
if (Info != NULL) {
FreePool (Info);
}
@@ -266,17 +266,17 @@ GetAccessControl ( /**
Get file name from device path.
- The file name may contain one or more device path node. Save the file name in a
- buffer if file name is found. The caller is responsible to free the buffer.
-
+ The file name may contain one or more device path node. Save the file name in a
+ buffer if file name is found. The caller is responsible to free the buffer.
+
@param[in] DevicePath A pointer to a device path.
@param[out] FileName The callee allocated buffer to save the file name if file name is found.
@param[out] FileNameOffset The offset of file name in device path if file name is found.
-
+
@retval UINTN The file name length. 0 means file name is not found.
**/
-UINTN
+UINTN
GetFileName (
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
OUT UINT8 **FileName,
@@ -342,26 +342,26 @@ GetFileName ( FirstNodeChar = (CHAR16) ReadUnaligned16 ((UINT16 *)((UINT8 *)TmpDevicePath + sizeof (EFI_DEVICE_PATH_PROTOCOL)));
NodeStr = (CHAR8 *)TmpDevicePath + sizeof (EFI_DEVICE_PATH_PROTOCOL);
NodeStrLength = DevicePathNodeLength (TmpDevicePath) - sizeof (EFI_DEVICE_PATH_PROTOCOL) - sizeof(CHAR16);
-
+
if ((FirstNodeChar == '\\') && (LastNodeChar == '\\')) {
//
// Skip separator "\" when there are two separators.
//
NodeStr += sizeof (CHAR16);
- NodeStrLength -= sizeof (CHAR16);
+ NodeStrLength -= sizeof (CHAR16);
} else if ((FirstNodeChar != '\\') && (LastNodeChar != '\\')) {
//
// Add separator "\" when there is no separator.
//
WriteUnaligned16 ((UINT16 *)(*FileName + Length), '\\');
Length += sizeof (CHAR16);
- }
+ }
CopyMem (*FileName + Length, NodeStr, NodeStrLength);
Length += NodeStrLength;
-
+
LastNodeChar = (CHAR16) ReadUnaligned16 ((UINT16 *) (NodeStr + NodeStrLength - sizeof(CHAR16)));
TmpDevicePath = NextDevicePathNode (TmpDevicePath);
- }
+ }
return Length;
}
@@ -373,16 +373,16 @@ GetFileName ( If DevicePath2 is identical with DevicePath1, or with DevicePath1's child device
path, then TRUE returned. Otherwise, FALSE is returned.
-
+
If DevicePath1 is NULL, then ASSERT().
If DevicePath2 is NULL, then ASSERT().
@param[in] DevicePath1 A pointer to a device path.
@param[in] DevicePath2 A pointer to a device path.
- @retval TRUE Two device paths are identical , or DevicePath2 is
+ @retval TRUE Two device paths are identical , or DevicePath2 is
DevicePath1's child device path.
- @retval FALSE Two device paths are not identical, and DevicePath2
+ @retval FALSE Two device paths are not identical, and DevicePath2
is not DevicePath1's child device path.
**/
@@ -410,9 +410,9 @@ CheckDevicePath ( if (IsDevicePathEnd (DevicePath1)) {
return FALSE;
}
-
+
//
- // The file name may contain one or more device path node.
+ // The file name may contain one or more device path node.
// To compare the file name, copy file name to a buffer and compare the buffer.
//
FileNameSize1 = GetFileName (DevicePath1, &FileName1, &FileNameOffset1);
@@ -422,7 +422,7 @@ CheckDevicePath ( DevicePathEqual = FALSE;
goto Done;
}
- if (CompareMem (DevicePath1, DevicePath2, FileNameOffset1) != 0) {
+ if (CompareMem (DevicePath1, DevicePath2, FileNameOffset1) != 0) {
DevicePathEqual = FALSE;
goto Done;
}
@@ -430,7 +430,7 @@ CheckDevicePath ( DevicePathEqual = FALSE;
goto Done;
}
- if (CompareMem (FileName1, FileName2, FileNameSize1) != 0) {
+ if (CompareMem (FileName1, FileName2, FileNameSize1) != 0) {
DevicePathEqual = FALSE;
goto Done;
}
@@ -449,9 +449,9 @@ CheckDevicePath ( DevicePathSize -= sizeof (EFI_DEVICE_PATH_PROTOCOL);
if (CompareMem (DevicePath1, DevicePath2, DevicePathSize) != 0) {
DevicePathEqual = FALSE;
- }
-
-Done:
+ }
+
+Done:
if (FileName1 != NULL) {
FreePool (FileName1);
}
@@ -463,12 +463,12 @@ Done: /**
- Check whether the image pointed to by DevicePath is in the device path list
- specified by AccessType.
+ Check whether the image pointed to by DevicePath is in the device path list
+ specified by AccessType.
@param[in] DevicePath Points to device path.
@param[in] AccessType The type of user access control.
-
+
@retval TRUE The DevicePath is in the specified List.
@retval FALSE The DevicePath is not in the specified List.
@@ -482,36 +482,36 @@ IsDevicePathInList ( EFI_STATUS Status;
EFI_USER_INFO_ACCESS_CONTROL *Access;
EFI_DEVICE_PATH_PROTOCOL *Path;
- UINTN OffSet;
+ UINTN OffSet;
Status = GetAccessControl (&Access, AccessType);
if (EFI_ERROR (Status)) {
return FALSE;
- }
+ }
OffSet = 0;
while (OffSet < Access->Size - sizeof (EFI_USER_INFO_ACCESS_CONTROL)) {
- Path = (EFI_DEVICE_PATH_PROTOCOL*)((UINT8*)(Access + 1) + OffSet);
+ Path = (EFI_DEVICE_PATH_PROTOCOL*)((UINT8*)(Access + 1) + OffSet);
if (CheckDevicePath (Path, DevicePath)) {
//
// The device path is found in list.
//
FreePool (Access);
return TRUE;
- }
+ }
OffSet += GetDevicePathSize (Path);
}
-
+
FreePool (Access);
- return FALSE;
+ return FALSE;
}
/**
- Check whether the image pointed to by DevicePath is permitted to load.
+ Check whether the image pointed to by DevicePath is permitted to load.
@param[in] DevicePath Points to device path
-
+
@retval TRUE The image pointed by DevicePath is permitted to load.
@retval FALSE The image pointed by DevicePath is forbidden to load.
@@ -523,28 +523,28 @@ VerifyDevicePath ( {
if (IsDevicePathInList (DevicePath, EFI_USER_INFO_ACCESS_PERMIT_LOAD)) {
//
- // This access control overrides any restrictions put in place by the
+ // This access control overrides any restrictions put in place by the
// EFI_USER_INFO_ACCESS_FORBID_LOAD record.
//
return TRUE;
}
-
+
if (IsDevicePathInList (DevicePath, EFI_USER_INFO_ACCESS_FORBID_LOAD)) {
//
// The device path is found in the forbidden list.
//
return FALSE;
}
-
- return TRUE;
+
+ return TRUE;
}
/**
- Check the image pointed by DevicePath is a boot option or not.
+ Check the image pointed by DevicePath is a boot option or not.
@param[in] DevicePath Points to device path.
-
+
@retval TRUE The image pointed by DevicePath is a boot option.
@retval FALSE The image pointed by DevicePath is not a boot option.
@@ -562,31 +562,31 @@ IsBootOption ( UINT8 *OptionBuffer;
UINT8 *OptionPtr;
EFI_DEVICE_PATH_PROTOCOL *OptionDevicePath;
-
+
//
// Get BootOrder
//
BootOrderListSize = 0;
- BootOrderList = NULL;
+ BootOrderList = NULL;
Status = gRT->GetVariable (
- L"BootOrder",
- &gEfiGlobalVariableGuid,
- NULL,
- &BootOrderListSize,
+ L"BootOrder",
+ &gEfiGlobalVariableGuid,
+ NULL,
+ &BootOrderListSize,
NULL
);
if (Status == EFI_BUFFER_TOO_SMALL) {
BootOrderList = AllocateZeroPool (BootOrderListSize);
ASSERT (BootOrderList != NULL);
Status = gRT->GetVariable (
- L"BootOrder",
- &gEfiGlobalVariableGuid,
- NULL,
- &BootOrderListSize,
+ L"BootOrder",
+ &gEfiGlobalVariableGuid,
+ NULL,
+ &BootOrderListSize,
BootOrderList
);
}
-
+
if (EFI_ERROR (Status)) {
//
// No Boot option
@@ -608,7 +608,7 @@ IsBootOption ( //
// Check whether the image is forbidden.
//
-
+
OptionPtr = OptionBuffer;
//
// Skip attribute.
@@ -624,7 +624,7 @@ IsBootOption ( // Skip descript string
//
OptionPtr += StrSize ((UINT16 *) OptionPtr);
-
+
//
// Now OptionPtr points to Device Path.
//
@@ -650,11 +650,11 @@ IsBootOption ( /**
Add the image info to a deferred image list.
- @param[in] ImageDevicePath A pointer to the device path of a image.
- @param[in] Image Points to the first byte of the image, or NULL if the
+ @param[in] ImageDevicePath A pointer to the device path of a image.
+ @param[in] Image Points to the first byte of the image, or NULL if the
image is not available.
@param[in] ImageSize The size of the image, or 0 if the image is not available.
-
+
**/
VOID
PutDefferedImageInfo (
@@ -675,9 +675,9 @@ PutDefferedImageInfo ( } else {
CurImageInfo = AllocatePool ((mDeferredImage.Count + 1) * sizeof (DEFERRED_IMAGE_INFO));
ASSERT (CurImageInfo != NULL);
-
+
CopyMem (
- CurImageInfo,
+ CurImageInfo,
mDeferredImage.ImageInfo,
mDeferredImage.Count * sizeof (DEFERRED_IMAGE_INFO)
);
@@ -685,7 +685,7 @@ PutDefferedImageInfo ( mDeferredImage.ImageInfo = CurImageInfo;
}
mDeferredImage.Count++;
-
+
//
// Save the deferred image information.
//
@@ -704,29 +704,29 @@ PutDefferedImageInfo ( /**
Returns information about a deferred image.
- This function returns information about a single deferred image. The deferred images are
- numbered consecutively, starting with 0. If there is no image which corresponds to
- ImageIndex, then EFI_NOT_FOUND is returned. All deferred images may be returned by
+ This function returns information about a single deferred image. The deferred images are
+ numbered consecutively, starting with 0. If there is no image which corresponds to
+ ImageIndex, then EFI_NOT_FOUND is returned. All deferred images may be returned by
iteratively calling this function until EFI_NOT_FOUND is returned.
- Image may be NULL and ImageSize set to 0 if the decision to defer execution was made
- because of the location of the executable image, rather than its actual contents.
+ Image may be NULL and ImageSize set to 0 if the decision to defer execution was made
+ because of the location of the executable image, rather than its actual contents.
@param[in] This Points to this instance of the EFI_DEFERRED_IMAGE_LOAD_PROTOCOL.
@param[in] ImageIndex Zero-based index of the deferred index.
- @param[out] ImageDevicePath On return, points to a pointer to the device path of the image.
- The device path should not be freed by the caller.
- @param[out] Image On return, points to the first byte of the image or NULL if the
+ @param[out] ImageDevicePath On return, points to a pointer to the device path of the image.
+ The device path should not be freed by the caller.
+ @param[out] Image On return, points to the first byte of the image or NULL if the
image is not available. The image should not be freed by the caller
- unless LoadImage() has been successfully called.
+ unless LoadImage() has been successfully called.
@param[out] ImageSize On return, the size of the image, or 0 if the image is not available.
- @param[out] BootOption On return, points to TRUE if the image was intended as a boot option
- or FALSE if it was not intended as a boot option.
-
+ @param[out] BootOption On return, points to TRUE if the image was intended as a boot option
+ or FALSE if it was not intended as a boot option.
+
@retval EFI_SUCCESS Image information returned successfully.
@retval EFI_NOT_FOUND ImageIndex does not refer to a valid image.
- @retval EFI_INVALID_PARAMETER ImageDevicePath is NULL or Image is NULL or ImageSize is NULL or
+ @retval EFI_INVALID_PARAMETER ImageDevicePath is NULL or Image is NULL or ImageSize is NULL or
BootOption is NULL.
-
+
**/
EFI_STATUS
EFIAPI
@@ -748,7 +748,7 @@ GetDefferedImageInfo ( if ((This == NULL) || (ImageSize == NULL) || (Image == NULL)) {
return EFI_INVALID_PARAMETER;
}
-
+
if ((ImageDevicePath == NULL) || (BootOption == NULL)) {
return EFI_INVALID_PARAMETER;
}
@@ -756,17 +756,17 @@ GetDefferedImageInfo ( if (ImageIndex >= mDeferredImage.Count) {
return EFI_NOT_FOUND;
}
-
+
//
// Get the request deferred image.
- //
+ //
ReqImageInfo = &mDeferredImage.ImageInfo[ImageIndex];
-
+
*ImageDevicePath = ReqImageInfo->ImageDevicePath;
*Image = ReqImageInfo->Image;
*ImageSize = ReqImageInfo->ImageSize;
*BootOption = ReqImageInfo->BootOption;
-
+
return EFI_SUCCESS;
}
@@ -775,7 +775,7 @@ GetDefferedImageInfo ( Provides the service of deferring image load based on platform policy control,
and installs Deferred Image Load Protocol.
- @param[in] AuthenticationStatus This is the authentication status returned from the
+ @param[in] AuthenticationStatus This is the authentication status returned from the
security measurement services for the input file.
@param[in] File This is a pointer to the device path of the file that
is being dispatched. This will optionally be used for
@@ -824,7 +824,7 @@ DxeDeferImageLoadHandler ( //
// Check whether user has a logon.
- //
+ //
CurrentUser = NULL;
if (mUserManager != NULL) {
mUserManager->Current (mUserManager, &CurrentUser);
@@ -839,7 +839,7 @@ DxeDeferImageLoadHandler ( return EFI_SUCCESS;
}
}
-
+
//
// Still no user logon.
// Check the file type and get policy setting.
@@ -852,7 +852,7 @@ DxeDeferImageLoadHandler ( //
return EFI_SUCCESS;
}
-
+
DEBUG ((EFI_D_INFO, "[Security] No user identified, the image is deferred to load!\n"));
PutDefferedImageInfo (File, FileBuffer, FileSize);
@@ -874,10 +874,10 @@ DxeDeferImageLoadHandler ( }
/**
- Locate user manager protocol when user manager is installed.
+ Locate user manager protocol when user manager is installed.
@param[in] Event The Event that is being processed, not used.
- @param[in] Context Event Context, not used.
+ @param[in] Context Event Context, not used.
**/
VOID
@@ -892,7 +892,7 @@ FindUserManagerProtocol ( NULL,
(VOID **) &mUserManager
);
-
+
}
@@ -912,22 +912,22 @@ DxeDeferImageLoadLibConstructor ( )
{
VOID *Registration;
-
+
//
// Register user manager notification function.
//
EfiCreateProtocolNotifyEvent (
- &gEfiUserManagerProtocolGuid,
+ &gEfiUserManagerProtocolGuid,
TPL_CALLBACK,
FindUserManagerProtocol,
NULL,
&Registration
);
-
+
return RegisterSecurity2Handler (
DxeDeferImageLoadHandler,
- EFI_AUTH_OPERATION_DEFER_IMAGE_LOAD
- );
+ EFI_AUTH_OPERATION_DEFER_IMAGE_LOAD
+ );
}
|