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476 lines
14 KiB
476 lines
14 KiB
4 years ago
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/** @file
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Main file for SetVar shell Debug1 function.
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(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
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Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "UefiShellDebug1CommandsLib.h"
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STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
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{L"-guid", TypeValue},
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{L"-bs", TypeFlag},
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{L"-rt", TypeFlag},
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{L"-nv", TypeFlag},
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{NULL, TypeMax}
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};
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typedef enum {
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DataTypeHexNumber = 0,
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DataTypeHexArray = 1,
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DataTypeAscii = 2,
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DataTypeUnicode = 3,
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DataTypeDevicePath = 4,
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DataTypeUnKnow = 5
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} DATA_TYPE;
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typedef union {
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UINT8 HexNumber8;
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UINT16 HexNumber16;
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UINT32 HexNumber32;
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UINT64 HexNumber64;
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} HEX_NUMBER;
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/**
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Check if the input is a (potentially empty) string of hexadecimal nibbles.
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@param[in] String The CHAR16 string to check.
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@retval FALSE A character has been found in String for which
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ShellIsHexaDecimalDigitCharacter() returned FALSE.
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@retval TRUE Otherwise. (Note that this covers the case when String is
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empty.)
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**/
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BOOLEAN
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IsStringOfHexNibbles (
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IN CONST CHAR16 *String
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)
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{
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CONST CHAR16 *Pos;
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for (Pos = String; *Pos != L'\0'; ++Pos) {
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if (!ShellIsHexaDecimalDigitCharacter (*Pos)) {
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return FALSE;
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}
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}
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return TRUE;
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}
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/**
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Function to check the TYPE of Data.
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@param[in] Data The Data to be check.
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@retval DATA_TYPE The TYPE of Data.
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**/
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DATA_TYPE
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TestDataType (
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IN CONST CHAR16 *Data
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)
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{
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if (Data[0] == L'0' && (Data[1] == L'x' || Data[1] == L'X')) {
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if (IsStringOfHexNibbles (Data+2) && StrLen (Data + 2) <= 16) {
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return DataTypeHexNumber;
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} else {
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return DataTypeUnKnow;
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}
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} else if (Data[0] == L'H') {
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if (IsStringOfHexNibbles (Data + 1) && StrLen (Data + 1) % 2 == 0) {
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return DataTypeHexArray;
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} else {
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return DataTypeUnKnow;
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}
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} else if (Data[0] == L'S') {
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return DataTypeAscii;
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} else if (Data[0] == L'L') {
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return DataTypeUnicode;
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} else if (Data[0] == L'P' || StrnCmp (Data, L"--", 2) == 0) {
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return DataTypeDevicePath;
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}
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if (IsStringOfHexNibbles (Data) && StrLen (Data) % 2 == 0) {
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return DataTypeHexArray;
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}
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return DataTypeAscii;
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}
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/**
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Function to parse the Data by the type of Data, and save in the Buffer.
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@param[in] Data A pointer to a buffer to be parsed.
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@param[out] Buffer A pointer to a buffer to hold the return data.
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@param[in,out] BufferSize On input, indicates the size of Buffer in bytes.
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On output,indicates the size of data return in Buffer.
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Or the size in bytes of the buffer needed to obtain.
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@retval EFI_INVALID_PARAMETER The Buffer or BufferSize is NULL.
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@retval EFI_BUFFER_TOO_SMALL The Buffer is too small to hold the data.
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@retval EFI_OUT_OF_RESOURCES A memory allcation failed.
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@retval EFI_SUCCESS The Data parsed successful and save in the Buffer.
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**/
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EFI_STATUS
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ParseParameterData (
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IN CONST CHAR16 *Data,
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OUT VOID *Buffer,
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IN OUT UINTN *BufferSize
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)
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{
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UINT64 HexNumber;
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UINTN HexNumberLen;
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UINTN Size;
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CHAR8 *AsciiBuffer;
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DATA_TYPE DataType;
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EFI_DEVICE_PATH_PROTOCOL *DevPath;
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EFI_STATUS Status;
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HexNumber = 0;
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HexNumberLen = 0;
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Size = 0;
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AsciiBuffer = NULL;
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DevPath = NULL;
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Status = EFI_SUCCESS;
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if (Data == NULL || BufferSize == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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DataType = TestDataType (Data);
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if (DataType == DataTypeHexNumber) {
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//
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// hex number
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//
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StrHexToUint64S (Data + 2, NULL, &HexNumber);
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HexNumberLen = StrLen (Data + 2);
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if (HexNumberLen >= 1 && HexNumberLen <= 2) {
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Size = 1;
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} else if (HexNumberLen >= 3 && HexNumberLen <= 4) {
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Size = 2;
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} else if (HexNumberLen >= 5 && HexNumberLen <= 8) {
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Size = 4;
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} else if (HexNumberLen >= 9 && HexNumberLen <= 16) {
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Size = 8;
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}
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if (Buffer != NULL && *BufferSize >= Size) {
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CopyMem(Buffer, (VOID *)&HexNumber, Size);
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} else {
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Status = EFI_BUFFER_TOO_SMALL;
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}
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*BufferSize = Size;
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} else if (DataType == DataTypeHexArray) {
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//
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// hex array
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//
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if (*Data == L'H') {
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Data = Data + 1;
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}
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Size = StrLen (Data) / 2;
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if (Buffer != NULL && *BufferSize >= Size) {
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StrHexToBytes(Data, StrLen (Data), (UINT8 *)Buffer, Size);
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} else {
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Status = EFI_BUFFER_TOO_SMALL;
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}
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*BufferSize = Size;
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} else if (DataType == DataTypeAscii) {
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//
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// ascii text
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//
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if (*Data == L'S') {
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Data = Data + 1;
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}
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AsciiBuffer = AllocateZeroPool (StrSize (Data) / 2);
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if (AsciiBuffer == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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} else {
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AsciiSPrint (AsciiBuffer, StrSize (Data) / 2, "%s", (CHAR8 *)Data);
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Size = StrSize (Data) / 2 - 1;
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if (Buffer != NULL && *BufferSize >= Size) {
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CopyMem (Buffer, AsciiBuffer, Size);
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} else {
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Status = EFI_BUFFER_TOO_SMALL;
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}
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*BufferSize = Size;
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}
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SHELL_FREE_NON_NULL (AsciiBuffer);
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} else if (DataType == DataTypeUnicode) {
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//
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// unicode text
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//
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if (*Data == L'L') {
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Data = Data + 1;
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}
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Size = StrSize (Data) - sizeof (CHAR16);
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if (Buffer != NULL && *BufferSize >= Size) {
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CopyMem (Buffer, Data, Size);
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} else {
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Status = EFI_BUFFER_TOO_SMALL;
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}
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*BufferSize = Size;
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} else if (DataType == DataTypeDevicePath) {
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if (*Data == L'P') {
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Data = Data + 1;
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} else if (StrnCmp (Data, L"--", 2) == 0) {
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Data = Data + 2;
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}
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DevPath = ConvertTextToDevicePath (Data);
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if (DevPath == NULL) {
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ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_SETVAR_ERROR_DPFT), gShellDebug1HiiHandle, L"setvar");
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Status = EFI_INVALID_PARAMETER;
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} else {
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Size = GetDevicePathSize (DevPath);
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if (Buffer != NULL && *BufferSize >= Size) {
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CopyMem (Buffer, DevPath, Size);
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} else {
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Status = EFI_BUFFER_TOO_SMALL;
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}
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*BufferSize = Size;
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}
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SHELL_FREE_NON_NULL (DevPath);
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} else {
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Status = EFI_INVALID_PARAMETER;
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}
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return Status;
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}
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/**
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Function to get each data from parameters.
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@param[in] Package The package of checked values.
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@param[out] Buffer A pointer to a buffer to hold the return data.
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@param[out] BufferSize Indicates the size of data in bytes return in Buffer.
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@retval EFI_INVALID_PARAMETER Buffer or BufferSize is NULL.
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@retval EFI_OUT_OF_RESOURCES A memory allcation failed.
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@retval EFI_SUCCESS Get each parameter data was successful.
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**/
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EFI_STATUS
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GetVariableDataFromParameter (
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IN CONST LIST_ENTRY *Package,
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OUT UINT8 **Buffer,
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OUT UINTN *BufferSize
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)
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{
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CONST CHAR16 *TempData;
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UINTN Index;
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UINTN TotalSize;
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UINTN Size;
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UINT8 *BufferWalker;
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EFI_STATUS Status;
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TotalSize = 0;
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Size = 0;
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Status = EFI_SUCCESS;
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if (BufferSize == NULL || Buffer == NULL || ShellCommandLineGetCount (Package) < 3) {
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return EFI_INVALID_PARAMETER;
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}
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for (Index = 2; Index < ShellCommandLineGetCount (Package); Index++) {
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TempData = ShellCommandLineGetRawValue (Package, Index);
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ASSERT (TempData != NULL);
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if (TempData[0] != L'=') {
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ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellDebug1HiiHandle, L"setvar", TempData);
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return EFI_INVALID_PARAMETER;
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}
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TempData = TempData + 1;
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Size = 0;
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Status = ParseParameterData (TempData, NULL, &Size);
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if (EFI_ERROR (Status)) {
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if (Status == EFI_BUFFER_TOO_SMALL) {
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//
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// We expect return EFI_BUFFER_TOO_SMALL when pass 'NULL' as second parameter to the function ParseParameterData.
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//
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TotalSize += Size;
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} else {
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if (Status == EFI_INVALID_PARAMETER) {
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ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellDebug1HiiHandle, L"setvar", TempData);
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} else if (Status == EFI_NOT_FOUND) {
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ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_SETVAR_ERROR_DPFT), gShellDebug1HiiHandle, L"setvar");
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}
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return Status;
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}
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}
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}
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*BufferSize = TotalSize;
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*Buffer = AllocateZeroPool (TotalSize);
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if (*Buffer == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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} else {
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BufferWalker = *Buffer;
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for (Index = 2; Index < ShellCommandLineGetCount (Package); Index++) {
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TempData = ShellCommandLineGetRawValue (Package, Index);
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TempData = TempData + 1;
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Size = TotalSize;
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Status = ParseParameterData (TempData, (VOID *)BufferWalker, &Size);
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if (!EFI_ERROR (Status)) {
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BufferWalker = BufferWalker + Size;
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TotalSize = TotalSize - Size;
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} else {
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return Status;
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}
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}
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}
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return EFI_SUCCESS;
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}
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/**
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Function for 'setvar' command.
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@param[in] ImageHandle Handle to the Image (NULL if Internal).
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@param[in] SystemTable Pointer to the System Table (NULL if Internal).
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**/
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SHELL_STATUS
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EFIAPI
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ShellCommandRunSetVar (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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RETURN_STATUS RStatus;
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LIST_ENTRY *Package;
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CHAR16 *ProblemParam;
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SHELL_STATUS ShellStatus;
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CONST CHAR16 *VariableName;
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EFI_GUID Guid;
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CONST CHAR16 *StringGuid;
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UINT32 Attributes;
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VOID *Buffer;
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UINTN Size;
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UINTN LoopVar;
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ShellStatus = SHELL_SUCCESS;
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Status = EFI_SUCCESS;
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Buffer = NULL;
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Size = 0;
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Attributes = 0;
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//
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// initialize the shell lib (we must be in non-auto-init...)
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//
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Status = ShellInitialize();
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ASSERT_EFI_ERROR(Status);
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Status = CommandInit();
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ASSERT_EFI_ERROR(Status);
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//
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// parse the command line
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||
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//
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Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
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||
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if (EFI_ERROR(Status)) {
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||
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if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
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||
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellDebug1HiiHandle, L"setvar", ProblemParam);
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||
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FreePool(ProblemParam);
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ShellStatus = SHELL_INVALID_PARAMETER;
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||
|
|
} else {
|
||
|
|
ASSERT(FALSE);
|
||
|
|
}
|
||
|
|
} else if (ShellCommandLineCheckDuplicate (Package,&ProblemParam) != EFI_SUCCESS) {
|
||
|
|
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_DUPLICATE), gShellDebug1HiiHandle, L"setvar", ProblemParam);
|
||
|
|
FreePool(ProblemParam);
|
||
|
|
ShellStatus = SHELL_INVALID_PARAMETER;
|
||
|
|
} else {
|
||
|
|
if (ShellCommandLineGetCount(Package) < 2) {
|
||
|
|
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellDebug1HiiHandle, L"setvar");
|
||
|
|
ShellStatus = SHELL_INVALID_PARAMETER;
|
||
|
|
} else {
|
||
|
|
VariableName = ShellCommandLineGetRawValue(Package, 1);
|
||
|
|
if (!ShellCommandLineGetFlag(Package, L"-guid")){
|
||
|
|
CopyGuid(&Guid, &gEfiGlobalVariableGuid);
|
||
|
|
} else {
|
||
|
|
StringGuid = ShellCommandLineGetValue(Package, L"-guid");
|
||
|
|
RStatus = StrToGuid (StringGuid, &Guid);
|
||
|
|
if (RETURN_ERROR (RStatus) || (StringGuid[GUID_STRING_LENGTH] != L'\0')) {
|
||
|
|
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellDebug1HiiHandle, L"setvar", StringGuid);
|
||
|
|
ShellStatus = SHELL_INVALID_PARAMETER;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ShellCommandLineGetCount(Package) == 2) {
|
||
|
|
//
|
||
|
|
// Display
|
||
|
|
//
|
||
|
|
Status = gRT->GetVariable((CHAR16*)VariableName, &Guid, &Attributes, &Size, Buffer);
|
||
|
|
if (Status == EFI_BUFFER_TOO_SMALL) {
|
||
|
|
Buffer = AllocateZeroPool(Size);
|
||
|
|
Status = gRT->GetVariable((CHAR16*)VariableName, &Guid, &Attributes, &Size, Buffer);
|
||
|
|
}
|
||
|
|
if (!EFI_ERROR(Status) && Buffer != NULL) {
|
||
|
|
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_SETVAR_PRINT), gShellDebug1HiiHandle, &Guid, VariableName, Size);
|
||
|
|
for (LoopVar = 0; LoopVar < Size; LoopVar++) {
|
||
|
|
ShellPrintEx(-1, -1, L"%02x ", ((UINT8*)Buffer)[LoopVar]);
|
||
|
|
}
|
||
|
|
ShellPrintEx(-1, -1, L"\r\n");
|
||
|
|
} else {
|
||
|
|
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SETVAR_ERROR_GET), gShellDebug1HiiHandle, L"setvar", &Guid, VariableName);
|
||
|
|
ShellStatus = SHELL_ACCESS_DENIED;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
//
|
||
|
|
// Create, Delete or Modify.
|
||
|
|
//
|
||
|
|
Status = gRT->GetVariable((CHAR16*)VariableName, &Guid, &Attributes, &Size, Buffer);
|
||
|
|
if (Status == EFI_BUFFER_TOO_SMALL) {
|
||
|
|
Buffer = AllocateZeroPool(Size);
|
||
|
|
Status = gRT->GetVariable((CHAR16*)VariableName, &Guid, &Attributes, &Size, Buffer);
|
||
|
|
}
|
||
|
|
if (EFI_ERROR(Status) || Buffer == NULL) {
|
||
|
|
//
|
||
|
|
// Creating a new variable. determine attributes from command line.
|
||
|
|
//
|
||
|
|
Attributes = 0;
|
||
|
|
if (ShellCommandLineGetFlag(Package, L"-bs")) {
|
||
|
|
Attributes |= EFI_VARIABLE_BOOTSERVICE_ACCESS;
|
||
|
|
}
|
||
|
|
if (ShellCommandLineGetFlag(Package, L"-rt")) {
|
||
|
|
Attributes |= EFI_VARIABLE_RUNTIME_ACCESS |
|
||
|
|
EFI_VARIABLE_BOOTSERVICE_ACCESS;
|
||
|
|
}
|
||
|
|
if (ShellCommandLineGetFlag(Package, L"-nv")) {
|
||
|
|
Attributes |= EFI_VARIABLE_NON_VOLATILE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
SHELL_FREE_NON_NULL(Buffer);
|
||
|
|
|
||
|
|
Size = 0;
|
||
|
|
Status = GetVariableDataFromParameter(Package, (UINT8 **)&Buffer, &Size);
|
||
|
|
if (!EFI_ERROR(Status)) {
|
||
|
|
Status = gRT->SetVariable((CHAR16*)VariableName, &Guid, Attributes, Size, Buffer);
|
||
|
|
}
|
||
|
|
if (EFI_ERROR(Status)) {
|
||
|
|
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_SETVAR_ERROR_SET), gShellDebug1HiiHandle, L"setvar", &Guid, VariableName);
|
||
|
|
ShellStatus = SHELL_ACCESS_DENIED;
|
||
|
|
} else {
|
||
|
|
ASSERT(ShellStatus == SHELL_SUCCESS);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
ShellCommandLineFreeVarList (Package);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Buffer != NULL) {
|
||
|
|
FreePool(Buffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (ShellStatus);
|
||
|
|
}
|