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381 lines
12 KiB
381 lines
12 KiB
4 years ago
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/** @file
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Main file for attrib shell level 2 function.
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(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
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Copyright (c) 2009 - 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 "UefiShellLevel2CommandsLib.h"
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STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
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{L"-q", TypeFlag},
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{NULL, TypeMax}
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};
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/**
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Determine if a directory has no files in it.
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@param[in] FileHandle The EFI_HANDLE to the directory.
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@retval TRUE The directory has no files (or directories).
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@retval FALSE The directory has at least 1 file or directory in it.
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**/
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BOOLEAN
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IsDirectoryEmpty (
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IN EFI_HANDLE FileHandle
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)
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{
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EFI_STATUS Status;
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EFI_FILE_INFO *FileInfo;
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BOOLEAN NoFile;
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BOOLEAN RetVal;
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RetVal = TRUE;
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NoFile = FALSE;
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FileInfo = NULL;
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for (Status = FileHandleFindFirstFile(FileHandle, &FileInfo)
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; !NoFile && !EFI_ERROR (Status)
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; FileHandleFindNextFile(FileHandle, FileInfo, &NoFile)
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){
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if (StrStr(FileInfo->FileName, L".") != FileInfo->FileName
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&&StrStr(FileInfo->FileName, L"..") != FileInfo->FileName) {
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RetVal = FALSE;
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}
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}
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return (RetVal);
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}
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/**
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Delete a node and all nodes under it (including sub directories).
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@param[in] Node The node to start deleting with.
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@param[in] Quiet TRUE to print no messages.
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@retval SHELL_SUCCESS The operation was successful.
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@retval SHELL_ACCESS_DENIED A file was read only.
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@retval SHELL_ABORTED The abort message was received.
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@retval SHELL_DEVICE_ERROR A device error occured reading this Node.
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**/
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SHELL_STATUS
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CascadeDelete(
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IN EFI_SHELL_FILE_INFO *Node,
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IN CONST BOOLEAN Quiet
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)
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{
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SHELL_STATUS ShellStatus;
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EFI_SHELL_FILE_INFO *List;
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EFI_SHELL_FILE_INFO *Node2;
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EFI_STATUS Status;
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SHELL_PROMPT_RESPONSE *Resp;
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CHAR16 *TempName;
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UINTN NewSize;
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Resp = NULL;
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ShellStatus = SHELL_SUCCESS;
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List = NULL;
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Status = EFI_SUCCESS;
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if ((Node->Info->Attribute & EFI_FILE_READ_ONLY) == EFI_FILE_READ_ONLY) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DETELE_RO), gShellLevel2HiiHandle, L"rm", Node->FullName);
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return (SHELL_ACCESS_DENIED);
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}
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if ((Node->Info->Attribute & EFI_FILE_DIRECTORY) == EFI_FILE_DIRECTORY) {
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if (!IsDirectoryEmpty(Node->Handle)) {
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if (!Quiet) {
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Status = ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_RM_LOG_DELETE_CONF), gShellLevel2HiiHandle, Node->FullName);
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Status = ShellPromptForResponse(ShellPromptResponseTypeYesNo, NULL, (VOID**)&Resp);
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ASSERT(Resp != NULL);
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if (EFI_ERROR(Status) || *Resp != ShellPromptResponseYes) {
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SHELL_FREE_NON_NULL(Resp);
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return (SHELL_ABORTED);
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}
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SHELL_FREE_NON_NULL(Resp);
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}
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//
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// empty out the directory
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//
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Status = gEfiShellProtocol->FindFilesInDir(Node->Handle, &List);
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if (EFI_ERROR(Status)) {
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if (List!=NULL) {
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gEfiShellProtocol->FreeFileList(&List);
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}
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return (SHELL_DEVICE_ERROR);
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}
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for (Node2 = (EFI_SHELL_FILE_INFO *)GetFirstNode(&List->Link)
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; !IsNull(&List->Link, &Node2->Link)
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; Node2 = (EFI_SHELL_FILE_INFO *)GetNextNode(&List->Link, &Node2->Link)
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){
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//
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// skip the directory traversing stuff...
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//
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if (StrCmp(Node2->FileName, L".") == 0 || StrCmp(Node2->FileName, L"..") == 0) {
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continue;
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}
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Node2->Status = gEfiShellProtocol->OpenFileByName (Node2->FullName, &Node2->Handle, EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE);
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if (EFI_ERROR(Node2->Status) && StrStr(Node2->FileName, L":") == NULL) {
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//
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// Update the node filename to have full path with file system identifier
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//
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NewSize = StrSize(Node->FullName) + StrSize(Node2->FullName);
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TempName = AllocateZeroPool(NewSize);
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if (TempName == NULL) {
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ShellStatus = SHELL_OUT_OF_RESOURCES;
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} else {
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StrCpyS(TempName, NewSize/sizeof(CHAR16), Node->FullName);
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TempName[StrStr(TempName, L":")+1-TempName] = CHAR_NULL;
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StrCatS(TempName, NewSize/sizeof(CHAR16), Node2->FullName);
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FreePool((VOID*)Node2->FullName);
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Node2->FullName = TempName;
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//
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// Now try again to open the file
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//
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Node2->Status = gEfiShellProtocol->OpenFileByName (Node2->FullName, &Node2->Handle, EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE);
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}
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}
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if (!EFI_ERROR(Node2->Status)) {
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ShellStatus = CascadeDelete(Node2, Quiet);
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} else if (ShellStatus == SHELL_SUCCESS) {
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ShellStatus = (SHELL_STATUS)(Node2->Status&(~0x80000000));
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}
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if (ShellStatus != SHELL_SUCCESS) {
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if (List!=NULL) {
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gEfiShellProtocol->FreeFileList(&List);
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}
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return (ShellStatus);
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}
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}
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if (List!=NULL) {
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gEfiShellProtocol->FreeFileList(&List);
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}
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}
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}
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if (!(StrCmp(Node->FileName, L".") == 0 || StrCmp(Node->FileName, L"..") == 0)) {
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//
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// now delete the current node...
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//
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if (!Quiet) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DELETE), gShellLevel2HiiHandle, Node->FullName);
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}
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Status = gEfiShellProtocol->DeleteFile(Node->Handle);
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Node->Handle = NULL;
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}
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//
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// We cant allow for the warning here! (Dont use EFI_ERROR Macro).
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//
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if (Status != EFI_SUCCESS){
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DELETE_ERR), gShellLevel2HiiHandle, Status);
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return (SHELL_ACCESS_DENIED);
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} else {
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if (!Quiet) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DELETE_COMP), gShellLevel2HiiHandle);
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}
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return (SHELL_SUCCESS);
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}
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}
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/**
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Determines if a Node is a valid delete target. Will prevent deleting the root directory.
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@param[in] List RESERVED. Not used.
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@param[in] Node The node to analyze.
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@param[in] Package RESERVED. Not used.
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**/
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BOOLEAN
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IsValidDeleteTarget(
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IN CONST EFI_SHELL_FILE_INFO *List,
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IN CONST EFI_SHELL_FILE_INFO *Node,
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IN CONST LIST_ENTRY *Package
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)
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{
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CONST CHAR16 *TempLocation;
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BOOLEAN RetVal;
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CHAR16 *SearchString;
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CHAR16 *Pattern;
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UINTN Size;
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if (Node == NULL || Node->FullName == NULL) {
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return (FALSE);
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}
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TempLocation = StrStr(Node->FullName, L":");
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if (StrLen(TempLocation) <= 2) {
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//
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// Deleting the root directory is invalid.
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//
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return (FALSE);
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}
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TempLocation = ShellGetCurrentDir(NULL);
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if (TempLocation == NULL) {
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//
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// No working directory is specified so whatever is left is ok.
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//
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return (TRUE);
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}
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Pattern = NULL;
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SearchString = NULL;
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Size = 0;
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Pattern = StrnCatGrow(&Pattern, &Size, TempLocation , 0);
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Pattern = StrnCatGrow(&Pattern, &Size, L"\\" , 0);
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Size = 0;
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SearchString = StrnCatGrow(&SearchString, &Size, Node->FullName, 0);
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if (!EFI_ERROR(ShellIsDirectory(SearchString))) {
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SearchString = StrnCatGrow(&SearchString, &Size, L"\\", 0);
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SearchString = StrnCatGrow(&SearchString, &Size, L"*", 0);
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}
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if (Pattern == NULL || SearchString == NULL) {
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RetVal = FALSE;
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} else {
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RetVal = TRUE;
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if (gUnicodeCollation->MetaiMatch(gUnicodeCollation, Pattern, SearchString)) {
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RetVal = FALSE;
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}
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}
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SHELL_FREE_NON_NULL(Pattern );
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SHELL_FREE_NON_NULL(SearchString);
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return (RetVal);
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}
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/**
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Function for 'rm' 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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ShellCommandRunRm (
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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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LIST_ENTRY *Package;
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CHAR16 *ProblemParam;
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CONST CHAR16 *Param;
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SHELL_STATUS ShellStatus;
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UINTN ParamCount;
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EFI_SHELL_FILE_INFO *FileList;
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EFI_SHELL_FILE_INFO *Node;
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ProblemParam = NULL;
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ShellStatus = SHELL_SUCCESS;
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ParamCount = 0;
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FileList = NULL;
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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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//
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// parse the command line
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//
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Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
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if (EFI_ERROR(Status)) {
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if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel2HiiHandle, L"rm", ProblemParam);
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FreePool(ProblemParam);
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ShellStatus = SHELL_INVALID_PARAMETER;
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} else {
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ASSERT(FALSE);
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}
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} else {
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//
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// check for "-?"
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//
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if (ShellCommandLineGetFlag(Package, L"-?")) {
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ASSERT(FALSE);
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}
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if (ShellCommandLineGetRawValue(Package, 1) == NULL) {
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//
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// we insufficient parameters
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//
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel2HiiHandle, L"rm");
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ShellStatus = SHELL_INVALID_PARAMETER;
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} else {
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//
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// get a list with each file specified by parameters
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// if parameter is a directory then add all the files below it to the list
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//
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for ( ParamCount = 1, Param = ShellCommandLineGetRawValue(Package, ParamCount)
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; Param != NULL
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; ParamCount++, Param = ShellCommandLineGetRawValue(Package, ParamCount)
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){
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Status = ShellOpenFileMetaArg((CHAR16*)Param, EFI_FILE_MODE_WRITE|EFI_FILE_MODE_READ, &FileList);
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if (EFI_ERROR(Status) || FileList == NULL || IsListEmpty(&FileList->Link)) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_FILE_NF), gShellLevel2HiiHandle, L"rm", (CHAR16*)Param);
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ShellStatus = SHELL_NOT_FOUND;
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break;
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}
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}
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if (ShellStatus == SHELL_SUCCESS){
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//
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// loop through the list and make sure we are not aborting...
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//
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for ( Node = (EFI_SHELL_FILE_INFO*)GetFirstNode(&FileList->Link)
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; !IsNull(&FileList->Link, &Node->Link) && !ShellGetExecutionBreakFlag()
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; Node = (EFI_SHELL_FILE_INFO*)GetNextNode(&FileList->Link, &Node->Link)
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){
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//
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// skip the directory traversing stuff...
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//
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if (StrCmp(Node->FileName, L".") == 0 || StrCmp(Node->FileName, L"..") == 0) {
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continue;
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}
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//
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// do the deleting of nodes
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//
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if (EFI_ERROR(Node->Status)){
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DELETE_ERR2), gShellLevel2HiiHandle, Node->Status);
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ShellStatus = SHELL_ACCESS_DENIED;
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break;
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}
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if (!IsValidDeleteTarget(FileList, Node, Package)) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_RM_LOG_DELETE_ERR3), gShellLevel2HiiHandle, Node->FullName);
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ShellStatus = SHELL_INVALID_PARAMETER;
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break;
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}
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ShellStatus = CascadeDelete(Node, ShellCommandLineGetFlag(Package, L"-q"));
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}
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}
|
||
|
|
//
|
||
|
|
// Free the fileList
|
||
|
|
//
|
||
|
|
if (FileList != NULL) {
|
||
|
|
Status = ShellCloseFileMetaArg(&FileList);
|
||
|
|
}
|
||
|
|
FileList = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// free the command line package
|
||
|
|
//
|
||
|
|
ShellCommandLineFreeVarList (Package);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (ShellStatus);
|
||
|
|
}
|
||
|
|
|