| 1 | /** @file
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| 2 | Main file for attrib shell level 2 function.
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| 3 |
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| 4 | (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
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| 5 | (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
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| 6 | Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
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| 7 | Copyright (c) 2018, Dell Technologies. All rights reserved.<BR>
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| 8 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 9 |
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| 10 | **/
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| 11 |
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| 12 | #include "UefiShellLevel2CommandsLib.h"
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| 13 |
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| 14 | /**
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| 15 | Function will replace drive identifier with CWD.
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| 16 |
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| 17 | If FullPath begining with ':' is invalid path, then ASSERT.
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| 18 | If FullPath not include dirve identifier , then do nothing.
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| 19 | If FullPath likes "fs0:\xx" or "fs0:/xx" , then do nothing.
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| 20 | If FullPath likes "fs0:xxx" or "fs0:", the drive replaced by CWD.
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| 21 |
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| 22 | @param[in, out] FullPath The pointer to the string containing the path.
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| 23 | @param[in] Cwd Current directory.
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| 24 |
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| 25 | @retval EFI_SUCCESS Success.
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| 26 | @retval EFI_OUT_OF_SOURCES A memory allocation failed.
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| 27 | **/
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| 28 | EFI_STATUS
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| 29 | ReplaceDriveWithCwd (
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| 30 | IN OUT CHAR16 **FullPath,
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| 31 | IN CONST CHAR16 *Cwd
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| 32 | )
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| 33 | {
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| 34 | CHAR16 *Splitter;
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| 35 | CHAR16 *TempBuffer;
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| 36 | UINTN TotalSize;
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| 37 |
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| 38 | Splitter = NULL;
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| 39 | TempBuffer = NULL;
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| 40 | TotalSize = 0;
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| 41 |
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| 42 | if ((FullPath == NULL) || (*FullPath == NULL)) {
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| 43 | return EFI_SUCCESS;
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| 44 | }
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| 45 |
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| 46 | Splitter = StrStr (*FullPath, L":");
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| 47 | ASSERT (Splitter != *FullPath);
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| 48 |
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| 49 | if ((Splitter != NULL) && (*(Splitter + 1) != L'\\') && (*(Splitter + 1) != L'/')) {
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| 50 | TotalSize = StrSize (Cwd) + StrSize (Splitter + 1);
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| 51 | TempBuffer = AllocateZeroPool (TotalSize);
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| 52 | if (TempBuffer == NULL) {
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| 53 | return EFI_OUT_OF_RESOURCES;
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| 54 | }
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| 55 |
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| 56 | StrCpyS (TempBuffer, TotalSize / sizeof (CHAR16), Cwd);
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| 57 | StrCatS (TempBuffer, TotalSize / sizeof (CHAR16), L"\\");
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| 58 | StrCatS (TempBuffer, TotalSize / sizeof (CHAR16), Splitter + 1);
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| 59 |
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| 60 | FreePool (*FullPath);
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| 61 | *FullPath = TempBuffer;
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| 62 | }
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| 63 |
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| 64 | return EFI_SUCCESS;
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| 65 | }
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| 66 |
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| 67 | /**
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| 68 | function to determine if FullPath is under current filesystem.
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| 69 |
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| 70 | @param[in] FullPath The target location to determine.
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| 71 | @param[in] Cwd Current directory.
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| 72 |
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| 73 | @retval TRUE The FullPath is in the current filesystem.
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| 74 | @retval FALSE The FullPaht isn't in the current filesystem.
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| 75 | **/
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| 76 | BOOLEAN
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| 77 | IsCurrentFileSystem (
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| 78 | IN CONST CHAR16 *FullPath,
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| 79 | IN CONST CHAR16 *Cwd
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| 80 | )
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| 81 | {
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| 82 | CHAR16 *Splitter1;
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| 83 | CHAR16 *Splitter2;
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| 84 |
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| 85 | Splitter1 = NULL;
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| 86 | Splitter2 = NULL;
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| 87 |
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| 88 | ASSERT (FullPath != NULL);
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| 89 |
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| 90 | Splitter1 = StrStr (FullPath, L":");
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| 91 | if (Splitter1 == NULL) {
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| 92 | return TRUE;
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| 93 | }
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| 94 |
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| 95 | Splitter2 = StrStr (Cwd, L":");
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| 96 |
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| 97 | if (((UINTN)Splitter1 - (UINTN)FullPath) != ((UINTN)Splitter2 - (UINTN)Cwd)) {
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| 98 | return FALSE;
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| 99 | } else {
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| 100 | if (StrniCmp (FullPath, Cwd, ((UINTN)Splitter1 - (UINTN)FullPath) / sizeof (CHAR16)) == 0) {
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| 101 | return TRUE;
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| 102 | } else {
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| 103 | return FALSE;
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| 104 | }
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| 105 | }
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| 106 | }
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| 107 |
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| 108 | /**
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| 109 | Extract drive string and path string from FullPath.
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| 110 |
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| 111 | The caller must be free Drive and Path.
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| 112 |
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| 113 | @param[in] FullPath A path to be extracted.
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| 114 | @param[out] Drive Buffer to save drive identifier.
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| 115 | @param[out] Path Buffer to save path.
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| 116 |
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| 117 | @retval EFI_SUCCESS Success.
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| 118 | @retval EFI_OUT_OF_RESOUCES A memory allocation failed.
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| 119 | **/
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| 120 | EFI_STATUS
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| 121 | ExtractDriveAndPath (
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| 122 | IN CONST CHAR16 *FullPath,
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| 123 | OUT CHAR16 **Drive,
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| 124 | OUT CHAR16 **Path
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| 125 | )
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| 126 | {
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| 127 | CHAR16 *Splitter;
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| 128 |
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| 129 | ASSERT (FullPath != NULL);
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| 130 |
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| 131 | Splitter = StrStr (FullPath, L":");
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| 132 |
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| 133 | if (Splitter == NULL) {
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| 134 | *Drive = NULL;
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| 135 | *Path = AllocateCopyPool (StrSize (FullPath), FullPath);
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| 136 | if (*Path == NULL) {
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| 137 | return EFI_OUT_OF_RESOURCES;
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| 138 | }
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| 139 | } else {
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| 140 | if (*(Splitter + 1) == CHAR_NULL) {
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| 141 | *Drive = AllocateCopyPool (StrSize (FullPath), FullPath);
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| 142 | *Path = NULL;
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| 143 | if (*Drive == NULL) {
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| 144 | return EFI_OUT_OF_RESOURCES;
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| 145 | }
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| 146 | } else {
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| 147 | *Drive = AllocateCopyPool ((Splitter - FullPath + 2) * sizeof (CHAR16), FullPath);
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| 148 | if (*Drive == NULL) {
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| 149 | return EFI_OUT_OF_RESOURCES;
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| 150 | }
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| 151 |
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| 152 | (*Drive)[Splitter - FullPath + 1] = CHAR_NULL;
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| 153 |
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| 154 | *Path = AllocateCopyPool (StrSize (Splitter + 1), Splitter + 1);
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| 155 | if (*Path == NULL) {
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| 156 | FreePool (*Drive);
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| 157 | return EFI_OUT_OF_RESOURCES;
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| 158 | }
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| 159 | }
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| 160 | }
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| 161 |
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| 162 | return EFI_SUCCESS;
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| 163 | }
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| 164 |
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| 165 | /**
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| 166 | Function for 'cd' command.
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| 167 |
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| 168 | @param[in] ImageHandle Handle to the Image (NULL if Internal).
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| 169 | @param[in] SystemTable Pointer to the System Table (NULL if Internal).
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| 170 | **/
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| 171 | SHELL_STATUS
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| 172 | EFIAPI
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| 173 | ShellCommandRunCd (
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| 174 | IN EFI_HANDLE ImageHandle,
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| 175 | IN EFI_SYSTEM_TABLE *SystemTable
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| 176 | )
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| 177 | {
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| 178 | EFI_STATUS Status;
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| 179 | LIST_ENTRY *Package;
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| 180 | CONST CHAR16 *Cwd;
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| 181 | CHAR16 *Path;
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| 182 | CHAR16 *Drive;
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| 183 | CHAR16 *ProblemParam;
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| 184 | SHELL_STATUS ShellStatus;
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| 185 | CONST CHAR16 *Param1;
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| 186 | CHAR16 *Param1Copy;
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| 187 | CHAR16 *Walker;
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| 188 | CHAR16 *Splitter;
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| 189 | CHAR16 *TempBuffer;
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| 190 | UINTN TotalSize;
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| 191 |
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| 192 | ProblemParam = NULL;
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| 193 | ShellStatus = SHELL_SUCCESS;
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| 194 | Cwd = NULL;
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| 195 | Path = NULL;
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| 196 | Drive = NULL;
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| 197 | Splitter = NULL;
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| 198 | TempBuffer = NULL;
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| 199 | TotalSize = 0;
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| 200 |
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| 201 | Status = CommandInit ();
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| 202 | ASSERT_EFI_ERROR (Status);
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| 203 |
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| 204 | //
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| 205 | // initialize the shell lib (we must be in non-auto-init...)
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| 206 | //
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| 207 | Status = ShellInitialize ();
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| 208 | ASSERT_EFI_ERROR (Status);
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| 209 |
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| 210 | //
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| 211 | // parse the command line
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| 212 | //
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| 213 | Status = ShellCommandLineParse (EmptyParamList, &Package, &ProblemParam, TRUE);
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| 214 | if (EFI_ERROR (Status)) {
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| 215 | if ((Status == EFI_VOLUME_CORRUPTED) && (ProblemParam != NULL)) {
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| 216 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel2HiiHandle, L"cd", ProblemParam);
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| 217 | FreePool (ProblemParam);
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| 218 | ShellStatus = SHELL_INVALID_PARAMETER;
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| 219 | } else {
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| 220 | ASSERT (FALSE);
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| 221 | }
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| 222 | }
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| 223 |
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| 224 | //
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| 225 | // check for "-?"
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| 226 | //
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| 227 | if (ShellCommandLineGetFlag (Package, L"-?")) {
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| 228 | ASSERT (FALSE);
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| 229 | } else if (ShellCommandLineGetRawValue (Package, 2) != NULL) {
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| 230 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel2HiiHandle, L"cd");
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| 231 | ShellStatus = SHELL_INVALID_PARAMETER;
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| 232 | } else {
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| 233 | //
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| 234 | // remember that param 0 is the command name
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| 235 | // If there are 0 value parameters, then print the current directory
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| 236 | // else If there are 2 value parameters, then print the error message
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| 237 | // else If there is 1 value paramerer , then change the directory
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| 238 | //
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| 239 | Cwd = ShellGetCurrentDir (NULL);
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| 240 | if (Cwd == NULL) {
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| 241 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_NO_CWD), gShellLevel2HiiHandle, L"cd");
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| 242 | ShellStatus = SHELL_NOT_FOUND;
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| 243 | } else {
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| 244 | Param1 = ShellCommandLineGetRawValue (Package, 1);
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| 245 | if (Param1 == NULL) {
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| 246 | //
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| 247 | // display the current directory
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| 248 | //
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| 249 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_CD_PRINT), gShellLevel2HiiHandle, Cwd);
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| 250 | } else {
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| 251 | Param1Copy = CatSPrint (NULL, L"%s", Param1, NULL);
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| 252 | for (Walker = Param1Copy; Walker != NULL && *Walker != CHAR_NULL; Walker++) {
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| 253 | if (*Walker == L'\"') {
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| 254 | CopyMem (Walker, Walker + 1, StrSize (Walker) - sizeof (Walker[0]));
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| 255 | }
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| 256 | }
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| 257 |
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| 258 | if ((Param1Copy != NULL) && IsCurrentFileSystem (Param1Copy, Cwd)) {
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| 259 | Status = ReplaceDriveWithCwd (&Param1Copy, Cwd);
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| 260 | } else {
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| 261 | //
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| 262 | // Can't use cd command to change filesystem.
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| 263 | //
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| 264 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_CD_NF), gShellLevel2HiiHandle, L"cd");
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| 265 | Status = EFI_NOT_FOUND;
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| 266 | }
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| 267 |
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| 268 | if (!EFI_ERROR (Status) && (Param1Copy != NULL)) {
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| 269 | Splitter = StrStr (Cwd, L":");
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| 270 | if (Param1Copy[0] == L'\\') {
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| 271 | //
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| 272 | // Absolute Path on current drive letter.
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| 273 | //
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| 274 | TotalSize = ((Splitter - Cwd + 1) * sizeof (CHAR16)) + StrSize (Param1Copy);
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| 275 | TempBuffer = AllocateZeroPool (TotalSize);
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| 276 | if (TempBuffer == NULL) {
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| 277 | Status = EFI_OUT_OF_RESOURCES;
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| 278 | } else {
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| 279 | StrnCpyS (TempBuffer, TotalSize / sizeof (CHAR16), Cwd, (Splitter - Cwd + 1));
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| 280 | StrCatS (TempBuffer, TotalSize / sizeof (CHAR16), Param1Copy);
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| 281 |
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| 282 | FreePool (Param1Copy);
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| 283 | Param1Copy = TempBuffer;
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| 284 | TempBuffer = NULL;
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| 285 | }
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| 286 | } else {
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| 287 | if (StrStr (Param1Copy, L":") == NULL) {
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| 288 | TotalSize = StrSize (Cwd) + StrSize (Param1Copy);
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| 289 | TempBuffer = AllocateZeroPool (TotalSize);
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| 290 | if (TempBuffer == NULL) {
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| 291 | Status = EFI_OUT_OF_RESOURCES;
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| 292 | } else {
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| 293 | StrCpyS (TempBuffer, TotalSize / sizeof (CHAR16), Cwd);
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| 294 | StrCatS (TempBuffer, TotalSize / sizeof (CHAR16), L"\\");
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| 295 | StrCatS (TempBuffer, TotalSize / sizeof (CHAR16), Param1Copy);
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| 296 |
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| 297 | FreePool (Param1Copy);
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| 298 | Param1Copy = TempBuffer;
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| 299 | TempBuffer = NULL;
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| 300 | }
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| 301 | }
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| 302 | }
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| 303 | }
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| 304 |
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| 305 | if (!EFI_ERROR (Status)) {
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| 306 | Param1Copy = PathCleanUpDirectories (Param1Copy);
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| 307 | Status = ExtractDriveAndPath (Param1Copy, &Drive, &Path);
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| 308 | }
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| 309 |
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| 310 | if (!EFI_ERROR (Status) && (Drive != NULL) && (Path != NULL)) {
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| 311 | if (EFI_ERROR (ShellIsDirectory (Param1Copy))) {
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| 312 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_NOT_DIR), gShellLevel2HiiHandle, L"cd", Param1Copy);
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| 313 | ShellStatus = SHELL_NOT_FOUND;
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| 314 | } else {
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| 315 | Status = gEfiShellProtocol->SetCurDir (Drive, Path + 1);
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| 316 | if (EFI_ERROR (Status)) {
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| 317 | ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_DIR_NF), gShellLevel2HiiHandle, L"cd", Param1Copy);
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| 318 | ShellStatus = SHELL_NOT_FOUND;
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| 319 | }
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| 320 | }
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| 321 | }
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| 322 |
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| 323 | if (Drive != NULL) {
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| 324 | FreePool (Drive);
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| 325 | }
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| 326 |
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| 327 | if (Path != NULL) {
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| 328 | FreePool (Path);
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| 329 | }
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| 330 |
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| 331 | FreePool (Param1Copy);
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| 332 | }
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| 333 | }
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| 334 | }
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| 335 |
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| 336 | //
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| 337 | // free the command line package
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| 338 | //
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| 339 | ShellCommandLineFreeVarList (Package);
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| 340 |
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| 341 | //
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| 342 | // return the status
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| 343 | //
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| 344 | return (ShellStatus);
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| 345 | }
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