system76-edk2/ShellPkg/Library/UefiShellDriver1CommandsLib/Drivers.c

/** @file
  Main file for Drivers shell Driver1 function.

  (C) Copyright 2012-2015 Hewlett-Packard Development Company, L.P.<BR>
  Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "UefiShellDriver1CommandsLib.h"

#define MAX_LEN_DRIVER_NAME 35

STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
  {L"-sfo", TypeFlag},
  {L"-l", TypeValue},
  {NULL, TypeMax}
  };

/**
  Get a device path (in text format) for a given handle.

  @param[in] TheHandle      The handle to get the device path for.

  @retval NULL    An error occured.
  @return         A pointer to the driver path as a string.  The callee must
                  free this memory.
**/
CHAR16*
GetDevicePathTextForHandle(
  IN EFI_HANDLE TheHandle
  )
{
  EFI_STATUS                Status;
  EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
  EFI_DEVICE_PATH_PROTOCOL  *ImageDevicePath;
  EFI_DEVICE_PATH_PROTOCOL  *FinalPath;
  CHAR16                    *RetVal;

  FinalPath = NULL;

  Status = gBS->OpenProtocol (
                TheHandle,
                &gEfiLoadedImageProtocolGuid,
                (VOID**)&LoadedImage,
                gImageHandle,
                NULL,
                EFI_OPEN_PROTOCOL_GET_PROTOCOL
               );
  if (!EFI_ERROR (Status)) {
    Status = gBS->OpenProtocol (
                  LoadedImage->DeviceHandle,
                  &gEfiDevicePathProtocolGuid,
                  (VOID**)&ImageDevicePath,
                  gImageHandle,
                  NULL,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                 );
    if (!EFI_ERROR (Status)) {
      FinalPath = AppendDevicePath (ImageDevicePath, LoadedImage->FilePath);
      gBS->CloseProtocol(
        LoadedImage->DeviceHandle,
        &gEfiDevicePathProtocolGuid,
        gImageHandle,
        NULL);
    }
    gBS->CloseProtocol(
                TheHandle,
                &gEfiLoadedImageProtocolGuid,
                gImageHandle,
                NULL);
  }

  if (FinalPath == NULL) {
    return (NULL);
  }
  RetVal = gEfiShellProtocol->GetFilePathFromDevicePath(FinalPath);
  if (RetVal == NULL) {
    RetVal = ConvertDevicePathToText(FinalPath, TRUE, TRUE);
  }
  FreePool(FinalPath);
  return (RetVal);
}

/**
  Determine if the given handle has Driver Configuration protocol.

  @param[in] TheHandle      The handle to the driver to test.

  @retval TRUE              The driver does have Driver Configuration.
  @retval FALSE             The driver does not have Driver Configuration.
**/
BOOLEAN
ReturnDriverConfig(
  IN CONST EFI_HANDLE TheHandle
  )
{
  EFI_STATUS                  Status;
  Status = gBS->OpenProtocol((EFI_HANDLE)TheHandle, &gEfiDriverConfigurationProtocolGuid, NULL, gImageHandle, NULL, EFI_OPEN_PROTOCOL_TEST_PROTOCOL);
  if (EFI_ERROR(Status)) {
    return (FALSE);
  }
  return (TRUE);
}

/**
  Determine if the given handle has DriverDiagnostics protocol.

  @param[in] TheHandle      The handle to the driver to test.

  @retval TRUE              The driver does have Driver Diasgnostics.
  @retval FALSE             The driver does not have Driver Diagnostics.
**/
BOOLEAN
ReturnDriverDiag(
  IN CONST EFI_HANDLE TheHandle
  )
{
  EFI_STATUS                  Status;
  Status = gBS->OpenProtocol((EFI_HANDLE)TheHandle, &gEfiDriverDiagnostics2ProtocolGuid, NULL, gImageHandle, NULL, EFI_OPEN_PROTOCOL_TEST_PROTOCOL);
  if (EFI_ERROR(Status)) {
    Status = gBS->OpenProtocol((EFI_HANDLE)TheHandle, &gEfiDriverDiagnosticsProtocolGuid, NULL, gImageHandle, NULL, EFI_OPEN_PROTOCOL_TEST_PROTOCOL);
    if (EFI_ERROR(Status)) {
      return (FALSE);
    }
  }
  return (TRUE);
}

/**
  Finds and returns the version of the driver specified by TheHandle.

  @param[in] TheHandle      The driver handle to get the version of.

  @return             The version of the driver.
  @retval 0xFFFFFFFF  An error ocurred.
**/
UINT32
ReturnDriverVersion(
  IN CONST EFI_HANDLE TheHandle
  )
{
  EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;
  EFI_STATUS                  Status;
  UINT32                      RetVal;

  RetVal = (UINT32)-1;

  Status = gBS->OpenProtocol((EFI_HANDLE)TheHandle, &gEfiDriverBindingProtocolGuid, (VOID**)&DriverBinding, gImageHandle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
  if (!EFI_ERROR(Status)) {
    RetVal = DriverBinding->Version;
    gBS->CloseProtocol(TheHandle, &gEfiDriverBindingProtocolGuid, gImageHandle, NULL);
  }
  return (RetVal);
}

/**
  Get image name from Image Handle.

  @param[in] Handle      Image Handle

  @return         A pointer to the image name as a string.
**/
CHAR16 *
GetImageNameFromHandle (
  IN CONST EFI_HANDLE Handle
  )
{
  EFI_STATUS                        Status;
  EFI_DRIVER_BINDING_PROTOCOL       *DriverBinding;
  EFI_LOADED_IMAGE_PROTOCOL         *LoadedImage;
  EFI_DEVICE_PATH_PROTOCOL          *DevPathNode;
  EFI_GUID                          *NameGuid;
  CHAR16                            *ImageName;
  UINTN                             BufferSize;
  UINT32                            AuthenticationStatus;
  EFI_FIRMWARE_VOLUME2_PROTOCOL     *Fv2;

  LoadedImage   = NULL;
  DriverBinding = NULL;
  ImageName     = NULL;

  Status = gBS->OpenProtocol (
                  Handle,
                  &gEfiDriverBindingProtocolGuid,
                  (VOID **) &DriverBinding,
                  NULL,
                  NULL,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (EFI_ERROR (Status)) {
      return NULL;
  }
  Status = gBS->OpenProtocol (
                  DriverBinding->ImageHandle,
                  &gEfiLoadedImageProtocolGuid,
                  (VOID**)&LoadedImage,
                  gImageHandle,
                  NULL,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );
  if (!EFI_ERROR (Status)) {
    DevPathNode = LoadedImage->FilePath;
    if (DevPathNode == NULL) {
      return NULL;
    }
    while (!IsDevicePathEnd (DevPathNode)) {
      NameGuid = EfiGetNameGuidFromFwVolDevicePathNode ((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)DevPathNode);
      if (NameGuid != NULL) {
        Status = gBS->HandleProtocol (
                        LoadedImage->DeviceHandle,
                        &gEfiFirmwareVolume2ProtocolGuid,
                        (VOID **)&Fv2
                        );
        if (!EFI_ERROR (Status)) {
          Status = Fv2->ReadSection (
                          Fv2,
                          NameGuid,
                          EFI_SECTION_USER_INTERFACE,
                          0,
                          (VOID **)&ImageName,
                          &BufferSize,
                          &AuthenticationStatus
                          );
          if (!EFI_ERROR (Status)) {
            break;
          }
          ImageName = NULL;
        }
      }
      //
      // Next device path node
      //
      DevPathNode = NextDevicePathNode (DevPathNode);
    }
    if (ImageName == NULL) {
      ImageName = ConvertDevicePathToText (LoadedImage->FilePath, TRUE, TRUE);
    }
  }
  return ImageName;
}

/**
  Function for 'drivers' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunDrivers (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS          Status;
  LIST_ENTRY          *Package;
  CHAR16              *ProblemParam;
  SHELL_STATUS        ShellStatus;
  CHAR8               *Language;
  CONST CHAR16        *Lang;
  EFI_HANDLE          *HandleList;
  EFI_HANDLE          *HandleWalker;
  UINTN               ChildCount;
  UINTN               DeviceCount;
  CHAR16              ChildCountStr[21];
  CHAR16              DeviceCountStr[21];
  CHAR16              *Temp2;
  CONST CHAR16        *FullDriverName;
  CHAR16              *TruncatedDriverName;
  CHAR16              *ImageName;
  CHAR16              *FormatString;
  UINT32              DriverVersion;
  BOOLEAN             DriverConfig;
  BOOLEAN             DriverDiag;
  BOOLEAN             SfoFlag;

  ShellStatus         = SHELL_SUCCESS;
  Status              = EFI_SUCCESS;
  Language            = NULL;
  FormatString        = NULL;
  SfoFlag             = FALSE;

  //
  // initialize the shell lib (we must be in non-auto-init...)
  //
  Status = ShellInitialize();
  ASSERT_EFI_ERROR(Status);

  Status = CommandInit();
  ASSERT_EFI_ERROR(Status);

  //
  // parse the command line
  //
  Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
  if (EFI_ERROR(Status)) {
    if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellDriver1HiiHandle, L"drivers", ProblemParam);
      FreePool(ProblemParam);
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      ASSERT(FALSE);
    }
  } else {
    if (ShellCommandLineGetCount(Package) > 1) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellDriver1HiiHandle, L"drivers");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      if (ShellCommandLineGetFlag(Package, L"-l")){
        Lang = ShellCommandLineGetValue(Package, L"-l");
        if (Lang != NULL) {
          Language = AllocateZeroPool(StrSize(Lang));
          AsciiSPrint(Language, StrSize(Lang), "%S", Lang);
        } else {
          ASSERT(Language == NULL);
          ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_NO_VALUE), gShellDriver1HiiHandle, L"drivers", L"-l");
          ShellCommandLineFreeVarList (Package);
          return (SHELL_INVALID_PARAMETER);
        }
      }

      if (ShellCommandLineGetFlag (Package, L"-sfo")) {
        SfoFlag = TRUE;
        FormatString = HiiGetString (gShellDriver1HiiHandle, STRING_TOKEN (STR_DRIVERS_ITEM_LINE_SFO), Language);
        //
        // print the SFO header
        //
        ShellPrintHiiEx (
          -1,
          -1,
          Language,
          STRING_TOKEN (STR_GEN_SFO_HEADER),
          gShellDriver1HiiHandle,
          L"drivers");
      } else {
        FormatString = HiiGetString (gShellDriver1HiiHandle, STRING_TOKEN (STR_DRIVERS_ITEM_LINE), Language);
        //
        // print the header row
        //
        ShellPrintHiiEx(
          -1,
          -1,
          Language,
          STRING_TOKEN (STR_DRIVERS_HEADER_LINES),
          gShellDriver1HiiHandle);
      }

      HandleList = GetHandleListByProtocol(&gEfiDriverBindingProtocolGuid);
      for (HandleWalker = HandleList ; HandleWalker != NULL && *HandleWalker != NULL ; HandleWalker++){
        ChildCount     = 0;
        DeviceCount    = 0;
        Status         = ParseHandleDatabaseForChildDevices (*HandleWalker, &ChildCount , NULL);
        Status         = PARSE_HANDLE_DATABASE_DEVICES      (*HandleWalker, &DeviceCount, NULL);
        Temp2          = GetDevicePathTextForHandle(*HandleWalker);
        DriverVersion  = ReturnDriverVersion(*HandleWalker);
        DriverConfig   = ReturnDriverConfig(*HandleWalker);
        DriverDiag     = ReturnDriverDiag  (*HandleWalker);
        FullDriverName = GetStringNameFromHandle(*HandleWalker, Language);
        ImageName      = GetImageNameFromHandle (*HandleWalker);

        UnicodeValueToStringS (ChildCountStr,  sizeof (ChildCountStr),  0, ChildCount,  0);
        UnicodeValueToStringS (DeviceCountStr, sizeof (DeviceCountStr), 0, DeviceCount, 0);
        TruncatedDriverName = NULL;
        if (!SfoFlag && (FullDriverName != NULL)) {
          TruncatedDriverName = AllocateZeroPool ((MAX_LEN_DRIVER_NAME + 1) * sizeof (CHAR16));
          StrnCpyS (TruncatedDriverName, MAX_LEN_DRIVER_NAME + 1, FullDriverName, MAX_LEN_DRIVER_NAME);
        }

        if (!SfoFlag) {
          ShellPrintEx (
            -1,
            -1,
            FormatString,
            ConvertHandleToHandleIndex (*HandleWalker),
            DriverVersion,
            ChildCount > 0 ? L'B' : (DeviceCount > 0 ? L'D' : L'?'),
            DriverConfig ? L'X' : L'-',
            DriverDiag ? L'X' : L'-',
            DeviceCount > 0 ? DeviceCountStr : L"-",
            ChildCount  > 0 ? ChildCountStr : L"-",
            TruncatedDriverName,
            ImageName == NULL ? L"" : ImageName
            );
        } else {
          ShellPrintEx (
            -1,
            -1,
            FormatString,
            ConvertHandleToHandleIndex (*HandleWalker),
            DriverVersion,
            ChildCount > 0 ? L'B' : (DeviceCount > 0 ? L'D' : L'?'),
            DriverConfig ? L'Y' : L'N',
            DriverDiag ? L'Y' : L'N',
            DeviceCount,
            ChildCount,
            FullDriverName,
            Temp2 == NULL ? L"" : Temp2
            );
        }
        if (TruncatedDriverName != NULL) {
          FreePool (TruncatedDriverName);
        }
        if (Temp2 != NULL) {
          FreePool(Temp2);
        }
        if (ImageName != NULL) {
          FreePool (ImageName);
        }

        if (ShellGetExecutionBreakFlag ()) {
          ShellStatus = SHELL_ABORTED;
          break;
        }
      }
    }
    SHELL_FREE_NON_NULL(Language);
    ShellCommandLineFreeVarList (Package);
    SHELL_FREE_NON_NULL(FormatString);
  }

  return (ShellStatus);
}