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audk/MdeModulePkg/Application/CapsuleApp/AppSupport.c

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/** @file
A shell application that triggers capsule update process.
Copyright (c) 2016, 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,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/PrintLib.h>
#include <Protocol/LoadedImage.h>
#include <Protocol/SimpleFileSystem.h>
#include <Protocol/ShellParameters.h>
#include <Guid/FileInfo.h>
#include <Guid/Gpt.h>
#define IS_HYPHEN(a) ((a) == L'-')
#define IS_NULL(a) ((a) == L'\0')
#define MAX_ARG_NUM 11
UINTN Argc;
CHAR16 **Argv;
/**
This function parse application ARG.
@return Status
**/
EFI_STATUS
GetArg (
VOID
)
{
EFI_STATUS Status;
EFI_SHELL_PARAMETERS_PROTOCOL *ShellParameters;
Status = gBS->HandleProtocol (
gImageHandle,
&gEfiShellParametersProtocolGuid,
(VOID**)&ShellParameters
);
if (EFI_ERROR(Status)) {
return Status;
}
Argc = ShellParameters->Argc;
Argv = ShellParameters->Argv;
return EFI_SUCCESS;
}
/**
Converts a list of string to a specified buffer.
@param[out] Buf The output buffer that contains the string.
@param[in] BufferLength The length of the buffer
@param[in] Str The input string that contains the hex number
@retval EFI_SUCCESS The string was successfully converted to the buffer.
**/
EFI_STATUS
InternalStrToBuf (
OUT UINT8 *Buf,
IN UINTN BufferLength,
IN CHAR16 *Str
)
{
UINTN Index;
UINTN StrLength;
UINT8 Digit;
UINT8 Byte;
Digit = 0;
//
// Two hex char make up one byte
//
StrLength = BufferLength * sizeof (CHAR16);
for(Index = 0; Index < StrLength; Index++, Str++) {
if ((*Str >= L'a') && (*Str <= L'f')) {
Digit = (UINT8) (*Str - L'a' + 0x0A);
} else if ((*Str >= L'A') && (*Str <= L'F')) {
Digit = (UINT8) (*Str - L'A' + 0x0A);
} else if ((*Str >= L'0') && (*Str <= L'9')) {
Digit = (UINT8) (*Str - L'0');
} else {
return EFI_INVALID_PARAMETER;
}
//
// For odd characters, write the upper nibble for each buffer byte,
// and for even characters, the lower nibble.
//
if ((Index & 1) == 0) {
Byte = (UINT8) (Digit << 4);
} else {
Byte = Buf[Index / 2];
Byte &= 0xF0;
Byte = (UINT8) (Byte | Digit);
}
Buf[Index / 2] = Byte;
}
return EFI_SUCCESS;
}
/**
Converts a string to GUID value.
Guid Format is xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
@param[in] Str The registry format GUID string that contains the GUID value.
@param[out] Guid A pointer to the converted GUID value.
@retval EFI_SUCCESS The GUID string was successfully converted to the GUID value.
@retval EFI_UNSUPPORTED The input string is not in registry format.
@return others Some error occurred when converting part of GUID value.
**/
EFI_STATUS
InternalStrToGuid (
IN CHAR16 *Str,
OUT EFI_GUID *Guid
)
{
//
// Get the first UINT32 data
//
Guid->Data1 = (UINT32) StrHexToUint64 (Str);
while (!IS_HYPHEN (*Str) && !IS_NULL (*Str)) {
Str ++;
}
if (IS_HYPHEN (*Str)) {
Str++;
} else {
return EFI_UNSUPPORTED;
}
//
// Get the second UINT16 data
//
Guid->Data2 = (UINT16) StrHexToUint64 (Str);
while (!IS_HYPHEN (*Str) && !IS_NULL (*Str)) {
Str ++;
}
if (IS_HYPHEN (*Str)) {
Str++;
} else {
return EFI_UNSUPPORTED;
}
//
// Get the third UINT16 data
//
Guid->Data3 = (UINT16) StrHexToUint64 (Str);
while (!IS_HYPHEN (*Str) && !IS_NULL (*Str)) {
Str ++;
}
if (IS_HYPHEN (*Str)) {
Str++;
} else {
return EFI_UNSUPPORTED;
}
//
// Get the following 8 bytes data
//
InternalStrToBuf (&Guid->Data4[0], 2, Str);
//
// Skip 2 byte hex chars
//
Str += 2 * 2;
if (IS_HYPHEN (*Str)) {
Str++;
} else {
return EFI_UNSUPPORTED;
}
InternalStrToBuf (&Guid->Data4[2], 6, Str);
return EFI_SUCCESS;
}
/**
Return File System Volume containing this shell application.
@return File System Volume containing this shell application.
**/
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *
GetMyVol (
VOID
)
{
EFI_STATUS Status;
EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Vol;
Status = gBS->HandleProtocol (
gImageHandle,
&gEfiLoadedImageProtocolGuid,
(VOID **)&LoadedImage
);
ASSERT_EFI_ERROR (Status);
Status = gBS->HandleProtocol (
LoadedImage->DeviceHandle,
&gEfiSimpleFileSystemProtocolGuid,
(VOID **)&Vol
);
if (!EFI_ERROR (Status)) {
return Vol;
}
return NULL;
}
/**
Read a file from this volume.
@param[in] Vol File System Volume
@param[in] FileName The file to be read.
@param[out] BufferSize The file buffer size
@param[out] Buffer The file buffer
@retval EFI_SUCCESS Read file successfully
@retval EFI_NOT_FOUND File not found
**/
EFI_STATUS
ReadFileFromVol (
IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Vol,
IN CHAR16 *FileName,
OUT UINTN *BufferSize,
OUT VOID **Buffer
)
{
EFI_STATUS Status;
EFI_FILE_HANDLE RootDir;
EFI_FILE_HANDLE Handle;
UINTN FileInfoSize;
EFI_FILE_INFO *FileInfo;
UINTN TempBufferSize;
VOID *TempBuffer;
//
// Open the root directory
//
Status = Vol->OpenVolume (Vol, &RootDir);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Open the file
//
Status = RootDir->Open (
RootDir,
&Handle,
FileName,
EFI_FILE_MODE_READ,
0
);
if (EFI_ERROR (Status)) {
RootDir->Close (RootDir);
return Status;
}
RootDir->Close (RootDir);
//
// Get the file information
//
FileInfoSize = sizeof(EFI_FILE_INFO) + 1024;
FileInfo = AllocateZeroPool (FileInfoSize);
if (FileInfo == NULL) {
Handle->Close (Handle);
return Status;
}
Status = Handle->GetInfo (
Handle,
&gEfiFileInfoGuid,
&FileInfoSize,
FileInfo
);
if (EFI_ERROR (Status)) {
Handle->Close (Handle);
gBS->FreePool (FileInfo);
return Status;
}
//
// Allocate buffer for the file data. The last CHAR16 is for L'\0'
//
TempBufferSize = (UINTN) FileInfo->FileSize + sizeof(CHAR16);
TempBuffer = AllocateZeroPool (TempBufferSize);
if (TempBuffer == NULL) {
Handle->Close (Handle);
gBS->FreePool (FileInfo);
return Status;
}
gBS->FreePool (FileInfo);
//
// Read the file data to the buffer
//
Status = Handle->Read (
Handle,
&TempBufferSize,
TempBuffer
);
if (EFI_ERROR (Status)) {
Handle->Close (Handle);
gBS->FreePool (TempBuffer);
return Status;
}
Handle->Close (Handle);
*BufferSize = TempBufferSize;
*Buffer = TempBuffer;
return EFI_SUCCESS;
}
/**
Read a file.
If ScanFs is FLASE, it will use this Vol as default Fs.
If ScanFs is TRUE, it will scan all FS and check the file.
If there is only one file match the name, it will be read.
If there is more than one file match the name, it will return Error.
@param[in] ThisVol File System Volume
@param[in] FileName The file to be read.
@param[out] BufferSize The file buffer size
@param[out] Buffer The file buffer
@param[in] ScanFs Need Scan all FS
@retval EFI_SUCCESS Read file successfully
@retval EFI_NOT_FOUND File not found
@retval EFI_NO_MAPPING There is duplicated files found
**/
EFI_STATUS
ReadFileToBufferEx (
IN OUT EFI_SIMPLE_FILE_SYSTEM_PROTOCOL **ThisVol,
IN CHAR16 *FileName,
OUT UINTN *BufferSize,
OUT VOID **Buffer,
IN BOOLEAN ScanFs
)
{
EFI_STATUS Status;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Vol;
UINTN TempBufferSize;
VOID *TempBuffer;
UINTN NoHandles;
EFI_HANDLE *HandleBuffer;
UINTN Index;
//
// Check parameters
//
if ((FileName == NULL) || (Buffer == NULL) || (ThisVol == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// not scan fs
//
if (!ScanFs) {
if (*ThisVol == NULL) {
*ThisVol = GetMyVol ();
if (*ThisVol == NULL) {
return EFI_INVALID_PARAMETER;
}
}
//
// Read file directly from Vol
//
return ReadFileFromVol (*ThisVol, FileName, BufferSize, Buffer);
}
//
// need scan fs
//
//
// Get all Vol handle
//
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiSimpleFileSystemProtocolGuid,
NULL,
&NoHandles,
&HandleBuffer
);
if (EFI_ERROR (Status) && (NoHandles == 0)) {
return EFI_NOT_FOUND;
}
//
// Walk through each Vol
//
*ThisVol = NULL;
*BufferSize = 0;
*Buffer = NULL;
for (Index = 0; Index < NoHandles; Index++) {
Status = gBS->HandleProtocol (
HandleBuffer[Index],
&gEfiSimpleFileSystemProtocolGuid,
(VOID **)&Vol
);
if (EFI_ERROR(Status)) {
continue;
}
Status = ReadFileFromVol (Vol, FileName, &TempBufferSize, &TempBuffer);
if (!EFI_ERROR (Status)) {
//
// Read file OK, check duplication
//
if (*ThisVol != NULL) {
//
// Find the duplicated file
//
gBS->FreePool (TempBuffer);
gBS->FreePool (*Buffer);
Print (L"Duplicated FileName found!\n");
return EFI_NO_MAPPING;
} else {
//
// Record value
//
*ThisVol = Vol;
*BufferSize = TempBufferSize;
*Buffer = TempBuffer;
}
}
}
//
// Scan Fs done
//
if (*ThisVol == NULL) {
return EFI_NOT_FOUND;
}
//
// Done
//
return EFI_SUCCESS;
}
/**
Read a file.
@param[in] FileName The file to be read.
@param[out] BufferSize The file buffer size
@param[out] Buffer The file buffer
@retval EFI_SUCCESS Read file successfully
@retval EFI_NOT_FOUND File not found
**/
EFI_STATUS
ReadFileToBuffer (
IN CHAR16 *FileName,
OUT UINTN *BufferSize,
OUT VOID **Buffer
)
{
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Vol;
Vol = NULL;
return ReadFileToBufferEx(&Vol, FileName, BufferSize, Buffer, FALSE);
}
/**
Write a file.
@param[in] FileName The file to be written.
@param[in] BufferSize The file buffer size
@param[in] Buffer The file buffer
@retval EFI_SUCCESS Write file successfully
**/
EFI_STATUS
WriteFileFromBuffer (
IN CHAR16 *FileName,
IN UINTN BufferSize,
IN VOID *Buffer
)
{
EFI_STATUS Status;
EFI_FILE_HANDLE RootDir;
EFI_FILE_HANDLE Handle;
UINTN TempBufferSize;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Vol;
Vol = GetMyVol();
if (Vol == NULL) {
return EFI_NOT_FOUND;
}
//
// Open the root directory
//
Status = Vol->OpenVolume (Vol, &RootDir);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Open the file
//
Status = RootDir->Open (
RootDir,
&Handle,
FileName,
EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE| EFI_FILE_MODE_CREATE,
0
);
if (EFI_ERROR (Status)) {
RootDir->Close (RootDir);
return Status;
}
//
// Delete file
//
Status = Handle->Delete(Handle);
if (EFI_ERROR(Status)) {
return Status;
}
//
// Open the file again
//
Status = RootDir->Open (
RootDir,
&Handle,
FileName,
EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE| EFI_FILE_MODE_CREATE,
0
);
if (EFI_ERROR (Status)) {
RootDir->Close (RootDir);
return Status;
}
RootDir->Close (RootDir);
//
// Write the file data from the buffer
//
TempBufferSize = BufferSize;
Status = Handle->Write (
Handle,
&TempBufferSize,
Buffer
);
if (EFI_ERROR (Status)) {
Handle->Close (Handle);
return Status;
}
Handle->Close (Handle);
return EFI_SUCCESS;
}
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