1 /** @file 2 Main file for Alias shell level 3 function. 3 4 (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR> 5 Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved. <BR> 6 This program and the accompanying materials 7 are licensed and made available under the terms and conditions of the BSD License 8 which accompanies this distribution. The full text of the license may be found at 9 http://opensource.org/licenses/bsd-license.php 10 11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 13 14 **/ 15 16 #include "UefiShellLevel3CommandsLib.h" 17 18 #include <Library/ShellLib.h> 19 20 /** 21 Print out each alias registered with the Shell. 22 23 @retval STATUS_SUCCESS the printout was sucessful 24 @return any return code from GetNextVariableName except EFI_NOT_FOUND 25 **/ 26 SHELL_STATUS 27 EFIAPI 28 PrintAllShellAlias( 29 VOID 30 ) 31 { 32 CONST CHAR16 *ConstAllAliasList; 33 CHAR16 *Alias; 34 CONST CHAR16 *Command; 35 CHAR16 *Walker; 36 BOOLEAN Volatile; 37 38 Volatile = FALSE; 39 40 ConstAllAliasList = gEfiShellProtocol->GetAlias(NULL, NULL); 41 if (ConstAllAliasList == NULL) { 42 return (SHELL_SUCCESS); 43 } 44 Alias = AllocateZeroPool(StrSize(ConstAllAliasList)); 45 if (Alias == NULL) { 46 return (SHELL_OUT_OF_RESOURCES); 47 } 48 Walker = (CHAR16*)ConstAllAliasList; 49 50 do { 51 CopyMem(Alias, Walker, StrSize(Walker)); 52 Walker = StrStr(Alias, L";"); 53 if (Walker != NULL) { 54 Walker[0] = CHAR_NULL; 55 Walker = Walker + 1; 56 } 57 Command = gEfiShellProtocol->GetAlias(Alias, &Volatile); 58 if (ShellCommandIsOnAliasList(Alias)) { 59 Volatile = FALSE; 60 } 61 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_ALIAS_OUTPUT), gShellLevel3HiiHandle, !Volatile?L' ':L'*', Alias, Command); 62 } while (Walker != NULL && Walker[0] != CHAR_NULL); 63 64 FreePool(Alias); 65 66 return (SHELL_SUCCESS); 67 } 68 69 STATIC CONST SHELL_PARAM_ITEM ParamList[] = { 70 {L"-v", TypeFlag}, 71 {L"-d", TypeFlag}, 72 {NULL, TypeMax} 73 }; 74 75 /** 76 Function for 'alias' command. 77 78 @param[in] ImageHandle Handle to the Image (NULL if Internal). 79 @param[in] SystemTable Pointer to the System Table (NULL if Internal). 80 **/ 81 SHELL_STATUS 82 EFIAPI 83 ShellCommandRunAlias ( 84 IN EFI_HANDLE ImageHandle, 85 IN EFI_SYSTEM_TABLE *SystemTable 86 ) 87 { 88 EFI_STATUS Status; 89 LIST_ENTRY *Package; 90 CHAR16 *ProblemParam; 91 SHELL_STATUS ShellStatus; 92 CONST CHAR16 *Param1; 93 CONST CHAR16 *Param2; 94 CHAR16 *CleanParam2; 95 CONST CHAR16 *ConstAliasVal; 96 BOOLEAN Volatile; 97 98 ProblemParam = NULL; 99 ShellStatus = SHELL_SUCCESS; 100 CleanParam2 = NULL; 101 102 // 103 // initialize the shell lib (we must be in non-auto-init...) 104 // 105 Status = ShellInitialize(); 106 ASSERT_EFI_ERROR(Status); 107 108 Status = CommandInit(); 109 ASSERT_EFI_ERROR(Status); 110 111 // 112 // parse the command line 113 // 114 Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE); 115 if (EFI_ERROR(Status)) { 116 if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) { 117 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, L"alias", ProblemParam); 118 FreePool(ProblemParam); 119 ShellStatus = SHELL_INVALID_PARAMETER; 120 } else { 121 ASSERT(FALSE); 122 } 123 } else { 124 Param1 = ShellCommandLineGetRawValue(Package, 1); 125 Param2 = ShellCommandLineGetRawValue(Package, 2); 126 127 if (Param2 != NULL) { 128 CleanParam2 = AllocateCopyPool (StrSize(Param2), Param2); 129 if (CleanParam2 == NULL) { 130 return SHELL_OUT_OF_RESOURCES; 131 } 132 133 if (CleanParam2[0] == L'\"' && CleanParam2[StrLen(CleanParam2)-1] == L'\"') { 134 CleanParam2[StrLen(CleanParam2)-1] = L'\0'; 135 CopyMem (CleanParam2, CleanParam2 + 1, StrSize(CleanParam2) - sizeof(CleanParam2[0])); 136 } 137 } 138 139 // 140 // check for "-?" 141 // 142 if (ShellCommandLineGetFlag(Package, L"-?")) { 143 ASSERT(FALSE); 144 } 145 if (ShellCommandLineGetCount(Package) == 1) { 146 // 147 // print out alias' 148 // 149 Status = PrintAllShellAlias(); 150 } else if (ShellCommandLineGetFlag(Package, L"-d")) { 151 // 152 // delete an alias 153 // 154 Status = gEfiShellProtocol->SetAlias(Param1, NULL, TRUE, FALSE); 155 } else if (ShellCommandLineGetCount(Package) == 3) { 156 // 157 // must be adding an alias 158 // 159 Status = gEfiShellProtocol->SetAlias(CleanParam2, Param1, FALSE, ShellCommandLineGetFlag(Package, L"-v")); 160 if (EFI_ERROR(Status)) { 161 if (Status == EFI_ACCESS_DENIED) { 162 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_ERR_AD), gShellLevel3HiiHandle, L"alias"); 163 ShellStatus = SHELL_ACCESS_DENIED; 164 } else { 165 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_ERR_UK), gShellLevel3HiiHandle, L"alias", Status); 166 ShellStatus = SHELL_DEVICE_ERROR; 167 } 168 } 169 } else if (ShellCommandLineGetCount(Package) == 2) { 170 // 171 // print out a single alias 172 // 173 ConstAliasVal = gEfiShellProtocol->GetAlias(Param1, &Volatile); 174 if (ConstAliasVal == NULL) { 175 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PARAM_INV), gShellLevel3HiiHandle, L"alias", Param1); 176 ShellStatus = SHELL_INVALID_PARAMETER; 177 } else { 178 if (ShellCommandIsOnAliasList(Param1)) { 179 Volatile = FALSE; 180 } 181 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_ALIAS_OUTPUT), gShellLevel3HiiHandle, !Volatile?L' ':L'*', Param1, ConstAliasVal); 182 } 183 } else { 184 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel3HiiHandle, L"alias"); 185 ShellStatus = SHELL_INVALID_PARAMETER; 186 } 187 // 188 // free the command line package 189 // 190 ShellCommandLineFreeVarList (Package); 191 } 192 193 SHELL_FREE_NON_NULL (CleanParam2); 194 return (ShellStatus); 195 } 196
