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352 lines
10 KiB
352 lines
10 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 2016 Hewlett Packard Enterprise Development LP<BR>
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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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Copyright (c) 2018, Dell Technologies. 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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/**
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Function will replace drive identifier with CWD.
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If FullPath begining with ':' is invalid path, then ASSERT.
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If FullPath not include dirve identifier , then do nothing.
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If FullPath likes "fs0:\xx" or "fs0:/xx" , then do nothing.
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If FullPath likes "fs0:xxx" or "fs0:", the drive replaced by CWD.
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@param[in, out] FullPath The pointer to the string containing the path.
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@param[in] Cwd Current directory.
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@retval EFI_SUCCESS Success.
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@retval EFI_OUT_OF_SOURCES A memory allocation failed.
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**/
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EFI_STATUS
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ReplaceDriveWithCwd (
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IN OUT CHAR16 **FullPath,
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IN CONST CHAR16 *Cwd
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)
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{
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CHAR16 *Splitter;
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CHAR16 *TempBuffer;
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UINTN TotalSize;
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Splitter = NULL;
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TempBuffer = NULL;
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TotalSize = 0;
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if (FullPath == NULL || *FullPath == NULL) {
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return EFI_SUCCESS;
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}
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Splitter = StrStr (*FullPath, L":");
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ASSERT(Splitter != *FullPath);
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if (Splitter != NULL && *(Splitter + 1) != L'\\' && *(Splitter + 1) != L'/') {
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TotalSize = StrSize (Cwd) + StrSize (Splitter + 1);
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TempBuffer = AllocateZeroPool (TotalSize);
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if (TempBuffer == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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StrCpyS (TempBuffer, TotalSize / sizeof(CHAR16), Cwd);
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StrCatS (TempBuffer, TotalSize / sizeof(CHAR16), L"\\");
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StrCatS (TempBuffer, TotalSize / sizeof(CHAR16), Splitter + 1);
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FreePool(*FullPath);
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*FullPath = TempBuffer;
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}
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return EFI_SUCCESS;
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}
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/**
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function to determine if FullPath is under current filesystem.
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@param[in] FullPath The target location to determine.
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@param[in] Cwd Current directory.
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@retval TRUE The FullPath is in the current filesystem.
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@retval FALSE The FullPaht isn't in the current filesystem.
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**/
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BOOLEAN
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IsCurrentFileSystem (
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IN CONST CHAR16 *FullPath,
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IN CONST CHAR16 *Cwd
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)
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{
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CHAR16 *Splitter1;
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CHAR16 *Splitter2;
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Splitter1 = NULL;
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Splitter2 = NULL;
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ASSERT(FullPath != NULL);
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Splitter1 = StrStr (FullPath, L":");
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if (Splitter1 == NULL) {
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return TRUE;
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}
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Splitter2 = StrStr (Cwd, L":");
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if (((UINTN) Splitter1 - (UINTN) FullPath) != ((UINTN) Splitter2 - (UINTN) Cwd)) {
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return FALSE;
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} else {
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if (StrniCmp (FullPath, Cwd, ((UINTN) Splitter1 - (UINTN) FullPath) / sizeof (CHAR16)) == 0) {
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return TRUE;
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} else {
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return FALSE;
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}
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}
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}
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/**
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Extract drive string and path string from FullPath.
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The caller must be free Drive and Path.
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@param[in] FullPath A path to be extracted.
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@param[out] Drive Buffer to save drive identifier.
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@param[out] Path Buffer to save path.
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@retval EFI_SUCCESS Success.
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@retval EFI_OUT_OF_RESOUCES A memory allocation failed.
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**/
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EFI_STATUS
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ExtractDriveAndPath (
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IN CONST CHAR16 *FullPath,
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OUT CHAR16 **Drive,
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OUT CHAR16 **Path
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)
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{
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CHAR16 *Splitter;
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ASSERT (FullPath != NULL);
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Splitter = StrStr (FullPath, L":");
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if (Splitter == NULL) {
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*Drive = NULL;
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*Path = AllocateCopyPool (StrSize (FullPath), FullPath);
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if (*Path == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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} else {
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if (*(Splitter + 1) == CHAR_NULL) {
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*Drive = AllocateCopyPool (StrSize (FullPath), FullPath);
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*Path = NULL;
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if (*Drive == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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} else {
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*Drive = AllocateCopyPool ((Splitter - FullPath + 2) * sizeof(CHAR16), FullPath);
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if (*Drive == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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(*Drive)[Splitter - FullPath + 1] = CHAR_NULL;
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*Path = AllocateCopyPool (StrSize (Splitter + 1), Splitter + 1);
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if (*Path == NULL) {
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FreePool (*Drive);
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return EFI_OUT_OF_RESOURCES;
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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 'cd' 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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ShellCommandRunCd (
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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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CONST CHAR16 *Cwd;
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CHAR16 *Path;
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CHAR16 *Drive;
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CHAR16 *ProblemParam;
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SHELL_STATUS ShellStatus;
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CONST CHAR16 *Param1;
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CHAR16 *Param1Copy;
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CHAR16 *Walker;
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CHAR16 *Splitter;
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CHAR16 *TempBuffer;
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UINTN TotalSize;
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ProblemParam = NULL;
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ShellStatus = SHELL_SUCCESS;
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Cwd = NULL;
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Path = NULL;
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Drive = NULL;
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Splitter = NULL;
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TempBuffer = NULL;
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TotalSize = 0;
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Status = CommandInit();
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ASSERT_EFI_ERROR(Status);
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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 (EmptyParamList, &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"cd", 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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}
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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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} else if (ShellCommandLineGetRawValue(Package, 2) != NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_INVALID_PARAMETER;
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} else {
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//
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// remember that param 0 is the command name
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// If there are 0 value parameters, then print the current directory
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// else If there are 2 value parameters, then print the error message
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// else If there is 1 value paramerer , then change the directory
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//
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Cwd = ShellGetCurrentDir (NULL);
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if (Cwd == NULL) {
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ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN(STR_GEN_NO_CWD), gShellLevel2HiiHandle, L"cd");
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ShellStatus = SHELL_NOT_FOUND;
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} else {
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Param1 = ShellCommandLineGetRawValue (Package, 1);
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if (Param1 == NULL) {
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//
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// display the current directory
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//
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ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN(STR_CD_PRINT), gShellLevel2HiiHandle, Cwd);
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} else {
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Param1Copy = CatSPrint (NULL, L"%s", Param1, NULL);
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for (Walker = Param1Copy; Walker != NULL && *Walker != CHAR_NULL; Walker++) {
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if (*Walker == L'\"') {
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CopyMem (Walker, Walker + 1, StrSize(Walker) - sizeof(Walker[0]));
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}
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}
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if (Param1Copy != NULL && IsCurrentFileSystem (Param1Copy, Cwd)) {
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Status = ReplaceDriveWithCwd (&Param1Copy,Cwd);
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} else {
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//
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// Can't use cd command to change filesystem.
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//
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ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_CD_NF), gShellLevel2HiiHandle, L"cd");
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Status = EFI_NOT_FOUND;
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}
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if (!EFI_ERROR(Status) && Param1Copy != NULL) {
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Splitter = StrStr (Cwd, L":");
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if (Param1Copy[0] == L'\\') {
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//
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// Absolute Path on current drive letter.
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//
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TotalSize = ((Splitter - Cwd + 1) * sizeof(CHAR16)) + StrSize(Param1Copy);
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TempBuffer = AllocateZeroPool (TotalSize);
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if (TempBuffer == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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} else {
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StrnCpyS (TempBuffer, TotalSize / sizeof(CHAR16), Cwd, (Splitter - Cwd + 1));
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StrCatS (TempBuffer, TotalSize / sizeof(CHAR16), Param1Copy);
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FreePool (Param1Copy);
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Param1Copy = TempBuffer;
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TempBuffer = NULL;
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}
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} else {
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if (StrStr (Param1Copy,L":") == NULL) {
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TotalSize = StrSize (Cwd) + StrSize (Param1Copy);
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TempBuffer = AllocateZeroPool (TotalSize);
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if (TempBuffer == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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} else {
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StrCpyS (TempBuffer, TotalSize / sizeof (CHAR16), Cwd);
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StrCatS (TempBuffer, TotalSize / sizeof (CHAR16), L"\\");
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StrCatS (TempBuffer, TotalSize / sizeof (CHAR16), Param1Copy);
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FreePool (Param1Copy);
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Param1Copy = TempBuffer;
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TempBuffer = NULL;
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}
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}
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}
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}
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if (!EFI_ERROR(Status)) {
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Param1Copy = PathCleanUpDirectories (Param1Copy);
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Status = ExtractDriveAndPath (Param1Copy, &Drive, &Path);
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}
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if (!EFI_ERROR (Status) && Drive != NULL && Path != NULL) {
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if (EFI_ERROR(ShellIsDirectory (Param1Copy))) {
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ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN(STR_GEN_NOT_DIR), gShellLevel2HiiHandle, L"cd", Param1Copy);
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ShellStatus = SHELL_NOT_FOUND;
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} else {
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Status = gEfiShellProtocol->SetCurDir (Drive, Path + 1);
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if (EFI_ERROR (Status)) {
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ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN(STR_GEN_DIR_NF), gShellLevel2HiiHandle, L"cd", Param1Copy);
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ShellStatus = SHELL_NOT_FOUND;
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}
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}
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}
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if (Drive != NULL) {
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FreePool (Drive);
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}
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if (Path != NULL) {
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FreePool (Path);
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}
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FreePool (Param1Copy);
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}
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}
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}
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//
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// free the command line package
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//
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ShellCommandLineFreeVarList (Package);
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//
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// return the status
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//
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return (ShellStatus);
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}
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