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Diffstat (limited to '')
| -rw-r--r-- | src/VBox/Devices/EFI/Firmware/ShellPkg/Library/UefiShellCommandLib/UefiShellCommandLib.c | 2228 |
1 files changed, 2228 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/ShellPkg/Library/UefiShellCommandLib/UefiShellCommandLib.c b/src/VBox/Devices/EFI/Firmware/ShellPkg/Library/UefiShellCommandLib/UefiShellCommandLib.c new file mode 100644 index 00000000..2a44d836 --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/ShellPkg/Library/UefiShellCommandLib/UefiShellCommandLib.c @@ -0,0 +1,2228 @@ +/** @file + Provides interface to shell internal functions for shell commands. + + Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR> + (C) Copyright 2013-2015 Hewlett-Packard Development Company, L.P.<BR> + (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR> + + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include "UefiShellCommandLib.h" + +// STATIC local variables +STATIC SHELL_COMMAND_INTERNAL_LIST_ENTRY mCommandList; +STATIC SCRIPT_FILE_LIST mScriptList; +STATIC ALIAS_LIST mAliasList; +STATIC BOOLEAN mEchoState; +STATIC BOOLEAN mExitRequested; +STATIC UINT64 mExitCode; +STATIC BOOLEAN mExitScript; +STATIC CHAR16 *mProfileList; +STATIC UINTN mProfileListSize; +STATIC UINTN mFsMaxCount = 0; +STATIC UINTN mBlkMaxCount = 0; +STATIC BUFFER_LIST mFileHandleList; + +STATIC CONST CHAR8 Hex[] = { + '0', + '1', + '2', + '3', + '4', + '5', + '6', + '7', + '8', + '9', + 'A', + 'B', + 'C', + 'D', + 'E', + 'F' +}; + +// global variables required by library class. +EFI_UNICODE_COLLATION_PROTOCOL *gUnicodeCollation = NULL; +SHELL_MAP_LIST gShellMapList; +SHELL_MAP_LIST *gShellCurMapping = NULL; + +CONST CHAR16* SupportLevel[] = { + L"Minimal", + L"Scripting", + L"Basic", + L"Interactive" +}; + +/** + Function to make sure that the global protocol pointers are valid. + must be called after constructor before accessing the pointers. +**/ +EFI_STATUS +EFIAPI +CommandInit( + VOID + ) +{ + UINTN NumHandles; + EFI_HANDLE *Handles; + EFI_UNICODE_COLLATION_PROTOCOL *Uc; + CHAR8 *BestLanguage; + UINTN Index; + EFI_STATUS Status; + CHAR8 *PlatformLang; + + if (gUnicodeCollation == NULL) { + + GetEfiGlobalVariable2 (EFI_PLATFORM_LANG_VARIABLE_NAME, (VOID**)&PlatformLang, NULL); + + Status = gBS->LocateHandleBuffer ( + ByProtocol, + &gEfiUnicodeCollation2ProtocolGuid, + NULL, + &NumHandles, + &Handles + ); + if (EFI_ERROR (Status)) { + NumHandles = 0; + Handles = NULL; + } + for (Index = 0; Index < NumHandles; Index++) { + // + // Open Unicode Collation Protocol + // + Status = gBS->OpenProtocol ( + Handles[Index], + &gEfiUnicodeCollation2ProtocolGuid, + (VOID **) &Uc, + gImageHandle, + NULL, + EFI_OPEN_PROTOCOL_GET_PROTOCOL + ); + if (EFI_ERROR (Status)) { + continue; + } + + // + // Without clue provided use the first Unicode Collation2 protocol. + // This may happen when PlatformLang is NULL or when no installed Unicode + // Collation2 protocol instance supports PlatformLang. + // + if (gUnicodeCollation == NULL) { + gUnicodeCollation = Uc; + } + if (PlatformLang == NULL) { + break; + } + + // + // Find the best matching matching language from the supported languages + // of Unicode Collation2 protocol. + // + BestLanguage = GetBestLanguage ( + Uc->SupportedLanguages, + FALSE, + PlatformLang, + NULL + ); + if (BestLanguage != NULL) { + FreePool (BestLanguage); + gUnicodeCollation = Uc; + break; + } + } + if (Handles != NULL) { + FreePool (Handles); + } + if (PlatformLang != NULL) { + FreePool (PlatformLang); + } + } + + return (gUnicodeCollation == NULL) ? EFI_UNSUPPORTED : EFI_SUCCESS; +} + +/** + Constructor for the Shell Command library. + + Initialize the library and determine if the underlying is a UEFI Shell 2.0 or an EFI shell. + + @param ImageHandle the image handle of the process + @param SystemTable the EFI System Table pointer + + @retval EFI_SUCCESS the initialization was complete sucessfully +**/ +RETURN_STATUS +EFIAPI +ShellCommandLibConstructor ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_STATUS Status; + InitializeListHead(&gShellMapList.Link); + InitializeListHead(&mCommandList.Link); + InitializeListHead(&mAliasList.Link); + InitializeListHead(&mScriptList.Link); + InitializeListHead(&mFileHandleList.Link); + mEchoState = TRUE; + + mExitRequested = FALSE; + mExitScript = FALSE; + mProfileListSize = 0; + mProfileList = NULL; + + Status = CommandInit (); + if (EFI_ERROR (Status)) { + return EFI_DEVICE_ERROR; + } + + return (RETURN_SUCCESS); +} + +/** + Frees list of file handles. + + @param[in] List The list to free. +**/ +VOID +FreeFileHandleList ( + IN BUFFER_LIST *List + ) +{ + BUFFER_LIST *BufferListEntry; + + if (List == NULL){ + return; + } + // + // enumerate through the buffer list and free all memory + // + for ( BufferListEntry = ( BUFFER_LIST *)GetFirstNode(&List->Link) + ; !IsListEmpty (&List->Link) + ; BufferListEntry = (BUFFER_LIST *)GetFirstNode(&List->Link) + ){ + RemoveEntryList(&BufferListEntry->Link); + ASSERT(BufferListEntry->Buffer != NULL); + SHELL_FREE_NON_NULL(((SHELL_COMMAND_FILE_HANDLE*)(BufferListEntry->Buffer))->Path); + SHELL_FREE_NON_NULL(BufferListEntry->Buffer); + SHELL_FREE_NON_NULL(BufferListEntry); + } +} + +/** + Destructor for the library. free any resources. + + @param ImageHandle the image handle of the process + @param SystemTable the EFI System Table pointer + + @retval RETURN_SUCCESS this function always returns success +**/ +RETURN_STATUS +EFIAPI +ShellCommandLibDestructor ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + SHELL_COMMAND_INTERNAL_LIST_ENTRY *Node; + ALIAS_LIST *Node2; + SCRIPT_FILE_LIST *Node3; + SHELL_MAP_LIST *MapNode; + // + // enumerate throught the list and free all the memory + // + while (!IsListEmpty (&mCommandList.Link)) { + Node = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetFirstNode(&mCommandList.Link); + RemoveEntryList(&Node->Link); + SHELL_FREE_NON_NULL(Node->CommandString); + FreePool(Node); + DEBUG_CODE(Node = NULL;); + } + + // + // enumerate through the alias list and free all memory + // + while (!IsListEmpty (&mAliasList.Link)) { + Node2 = (ALIAS_LIST *)GetFirstNode(&mAliasList.Link); + RemoveEntryList(&Node2->Link); + SHELL_FREE_NON_NULL(Node2->CommandString); + SHELL_FREE_NON_NULL(Node2->Alias); + SHELL_FREE_NON_NULL(Node2); + DEBUG_CODE(Node2 = NULL;); + } + + // + // enumerate throught the list and free all the memory + // + while (!IsListEmpty (&mScriptList.Link)) { + Node3 = (SCRIPT_FILE_LIST *)GetFirstNode(&mScriptList.Link); + RemoveEntryList(&Node3->Link); + DeleteScriptFileStruct(Node3->Data); + FreePool(Node3); + } + + // + // enumerate throught the mappings list and free all the memory + // + if (!IsListEmpty(&gShellMapList.Link)) { + for (MapNode = (SHELL_MAP_LIST *)GetFirstNode(&gShellMapList.Link) + ; !IsListEmpty (&gShellMapList.Link) + ; MapNode = (SHELL_MAP_LIST *)GetFirstNode(&gShellMapList.Link) + ){ + ASSERT(MapNode != NULL); + RemoveEntryList(&MapNode->Link); + SHELL_FREE_NON_NULL(MapNode->DevicePath); + SHELL_FREE_NON_NULL(MapNode->MapName); + SHELL_FREE_NON_NULL(MapNode->CurrentDirectoryPath); + FreePool(MapNode); + } + } + if (!IsListEmpty(&mFileHandleList.Link)){ + FreeFileHandleList(&mFileHandleList); + } + + if (mProfileList != NULL) { + FreePool(mProfileList); + } + + gUnicodeCollation = NULL; + gShellCurMapping = NULL; + + return (RETURN_SUCCESS); +} + +/** + Find a dynamic command protocol instance given a command name string. + + @param CommandString the command name string + + @return instance the command protocol instance, if dynamic command instance found + @retval NULL no dynamic command protocol instance found for name +**/ +CONST EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL * +ShellCommandFindDynamicCommand ( + IN CONST CHAR16 *CommandString + ) +{ + EFI_STATUS Status; + EFI_HANDLE *CommandHandleList; + EFI_HANDLE *NextCommand; + EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *DynamicCommand; + + CommandHandleList = GetHandleListByProtocol(&gEfiShellDynamicCommandProtocolGuid); + if (CommandHandleList == NULL) { + // + // not found or out of resources + // + return NULL; + } + + for (NextCommand = CommandHandleList; *NextCommand != NULL; NextCommand++) { + Status = gBS->HandleProtocol( + *NextCommand, + &gEfiShellDynamicCommandProtocolGuid, + (VOID **)&DynamicCommand + ); + + if (EFI_ERROR(Status)) { + continue; + } + + if (gUnicodeCollation->StriColl( + gUnicodeCollation, + (CHAR16*)CommandString, + (CHAR16*)DynamicCommand->CommandName) == 0 + ){ + FreePool(CommandHandleList); + return (DynamicCommand); + } + } + + FreePool(CommandHandleList); + return (NULL); +} + +/** + Checks if a command exists as a dynamic command protocol instance + + @param[in] CommandString The command string to check for on the list. +**/ +BOOLEAN +ShellCommandDynamicCommandExists ( + IN CONST CHAR16 *CommandString + ) +{ + return (BOOLEAN) ((ShellCommandFindDynamicCommand(CommandString) != NULL)); +} + +/** + Checks if a command is already on the internal command list. + + @param[in] CommandString The command string to check for on the list. +**/ +BOOLEAN +ShellCommandIsCommandOnInternalList( + IN CONST CHAR16 *CommandString + ) +{ + SHELL_COMMAND_INTERNAL_LIST_ENTRY *Node; + + // + // assert for NULL parameter + // + ASSERT(CommandString != NULL); + + // + // check for the command + // + for ( Node = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetFirstNode(&mCommandList.Link) + ; !IsNull(&mCommandList.Link, &Node->Link) + ; Node = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetNextNode(&mCommandList.Link, &Node->Link) + ){ + ASSERT(Node->CommandString != NULL); + if (gUnicodeCollation->StriColl( + gUnicodeCollation, + (CHAR16*)CommandString, + Node->CommandString) == 0 + ){ + return (TRUE); + } + } + return (FALSE); +} + +/** + Checks if a command exists, either internally or through the dynamic command protocol. + + @param[in] CommandString The command string to check for on the list. +**/ +BOOLEAN +EFIAPI +ShellCommandIsCommandOnList( + IN CONST CHAR16 *CommandString + ) +{ + if (ShellCommandIsCommandOnInternalList(CommandString)) { + return TRUE; + } + + return ShellCommandDynamicCommandExists(CommandString); +} + +/** + Get the help text for a dynamic command. + + @param[in] CommandString The command name. + + @retval NULL No help text was found. + @return String of help text. Caller required to free. +**/ +CHAR16* +ShellCommandGetDynamicCommandHelp( + IN CONST CHAR16 *CommandString + ) +{ + EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *DynamicCommand; + + DynamicCommand = (EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *)ShellCommandFindDynamicCommand(CommandString); + if (DynamicCommand == NULL) { + return (NULL); + } + + // + // TODO: how to get proper language? + // + return DynamicCommand->GetHelp(DynamicCommand, "en"); +} + +/** + Get the help text for an internal command. + + @param[in] CommandString The command name. + + @retval NULL No help text was found. + @return String of help text. Caller reuiqred to free. +**/ +CHAR16* +ShellCommandGetInternalCommandHelp( + IN CONST CHAR16 *CommandString + ) +{ + SHELL_COMMAND_INTERNAL_LIST_ENTRY *Node; + + // + // assert for NULL parameter + // + ASSERT(CommandString != NULL); + + // + // check for the command + // + for ( Node = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetFirstNode(&mCommandList.Link) + ; !IsNull(&mCommandList.Link, &Node->Link) + ; Node = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetNextNode(&mCommandList.Link, &Node->Link) + ){ + ASSERT(Node->CommandString != NULL); + if (gUnicodeCollation->StriColl( + gUnicodeCollation, + (CHAR16*)CommandString, + Node->CommandString) == 0 + ){ + return (HiiGetString(Node->HiiHandle, Node->ManFormatHelp, NULL)); + } + } + return (NULL); +} + +/** + Get the help text for a command. + + @param[in] CommandString The command name. + + @retval NULL No help text was found. + @return String of help text.Caller reuiqred to free. +**/ +CHAR16* +EFIAPI +ShellCommandGetCommandHelp ( + IN CONST CHAR16 *CommandString + ) +{ + CHAR16 *HelpStr; + HelpStr = ShellCommandGetInternalCommandHelp(CommandString); + + if (HelpStr == NULL) { + HelpStr = ShellCommandGetDynamicCommandHelp(CommandString); + } + + return HelpStr; +} + + +/** + Registers handlers of type SHELL_RUN_COMMAND and + SHELL_GET_MAN_FILENAME for each shell command. + + If the ShellSupportLevel is greater than the value of the + PcdShellSupportLevel then return RETURN_UNSUPPORTED. + + Registers the handlers specified by GetHelpInfoHandler and CommandHandler + with the command specified by CommandString. If the command named by + CommandString has already been registered, then return + RETURN_ALREADY_STARTED. + + If there are not enough resources available to register the handlers then + RETURN_OUT_OF_RESOURCES is returned. + + If CommandString is NULL, then ASSERT(). + If GetHelpInfoHandler is NULL, then ASSERT(). + If CommandHandler is NULL, then ASSERT(). + If ProfileName is NULL, then ASSERT(). + + @param[in] CommandString Pointer to the command name. This is the + name to look for on the command line in + the shell. + @param[in] CommandHandler Pointer to a function that runs the + specified command. + @param[in] GetManFileName Pointer to a function that provides man + filename. + @param[in] ShellMinSupportLevel minimum Shell Support Level which has this + function. + @param[in] ProfileName profile name to require for support of this + function. + @param[in] CanAffectLE indicates whether this command's return value + can change the LASTERROR environment variable. + @param[in] HiiHandle Handle of this command's HII entry. + @param[in] ManFormatHelp HII locator for the help text. + + @retval RETURN_SUCCESS The handlers were registered. + @retval RETURN_OUT_OF_RESOURCES There are not enough resources available to + register the shell command. + @retval RETURN_UNSUPPORTED the ShellMinSupportLevel was higher than the + currently allowed support level. + @retval RETURN_ALREADY_STARTED The CommandString represents a command that + is already registered. Only 1 handler set for + a given command is allowed. + @sa SHELL_GET_MAN_FILENAME + @sa SHELL_RUN_COMMAND +**/ +RETURN_STATUS +EFIAPI +ShellCommandRegisterCommandName ( + IN CONST CHAR16 *CommandString, + IN SHELL_RUN_COMMAND CommandHandler, + IN SHELL_GET_MAN_FILENAME GetManFileName, + IN UINT32 ShellMinSupportLevel, + IN CONST CHAR16 *ProfileName, + IN CONST BOOLEAN CanAffectLE, + IN CONST EFI_HII_HANDLE HiiHandle, + IN CONST EFI_STRING_ID ManFormatHelp + ) +{ + SHELL_COMMAND_INTERNAL_LIST_ENTRY *Node; + SHELL_COMMAND_INTERNAL_LIST_ENTRY *Command; + SHELL_COMMAND_INTERNAL_LIST_ENTRY *PrevCommand; + INTN LexicalMatchValue; + + // + // Initialize local variables. + // + Command = NULL; + PrevCommand = NULL; + LexicalMatchValue = 0; + + // + // ASSERTs for NULL parameters + // + ASSERT(CommandString != NULL); + ASSERT(GetManFileName != NULL); + ASSERT(CommandHandler != NULL); + ASSERT(ProfileName != NULL); + + // + // check for shell support level + // + if (PcdGet8(PcdShellSupportLevel) < ShellMinSupportLevel) { + return (RETURN_UNSUPPORTED); + } + + // + // check for already on the list + // + if (ShellCommandIsCommandOnList(CommandString)) { + return (RETURN_ALREADY_STARTED); + } + + // + // allocate memory for new struct + // + Node = AllocateZeroPool(sizeof(SHELL_COMMAND_INTERNAL_LIST_ENTRY)); + if (Node == NULL) { + return RETURN_OUT_OF_RESOURCES; + } + Node->CommandString = AllocateCopyPool(StrSize(CommandString), CommandString); + if (Node->CommandString == NULL) { + FreePool (Node); + return RETURN_OUT_OF_RESOURCES; + } + + Node->GetManFileName = GetManFileName; + Node->CommandHandler = CommandHandler; + Node->LastError = CanAffectLE; + Node->HiiHandle = HiiHandle; + Node->ManFormatHelp = ManFormatHelp; + + if ( StrLen(ProfileName)>0 + && ((mProfileList != NULL + && StrStr(mProfileList, ProfileName) == NULL) || mProfileList == NULL) + ){ + ASSERT((mProfileList == NULL && mProfileListSize == 0) || (mProfileList != NULL)); + if (mProfileList == NULL) { + // + // If this is the first make a leading ';' + // + StrnCatGrow(&mProfileList, &mProfileListSize, L";", 0); + } + StrnCatGrow(&mProfileList, &mProfileListSize, ProfileName, 0); + StrnCatGrow(&mProfileList, &mProfileListSize, L";", 0); + } + + // + // Insert a new entry on top of the list + // + InsertHeadList (&mCommandList.Link, &Node->Link); + + // + // Move a new registered command to its sorted ordered location in the list + // + for (Command = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetFirstNode (&mCommandList.Link), + PrevCommand = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetFirstNode (&mCommandList.Link) + ; !IsNull (&mCommandList.Link, &Command->Link) + ; Command = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetNextNode (&mCommandList.Link, &Command->Link)) { + + // + // Get Lexical Comparison Value between PrevCommand and Command list entry + // + LexicalMatchValue = gUnicodeCollation->StriColl ( + gUnicodeCollation, + PrevCommand->CommandString, + Command->CommandString + ); + + // + // Swap PrevCommand and Command list entry if PrevCommand list entry + // is alphabetically greater than Command list entry + // + if (LexicalMatchValue > 0){ + Command = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *) SwapListEntries (&PrevCommand->Link, &Command->Link); + } else if (LexicalMatchValue < 0) { + // + // PrevCommand entry is lexically lower than Command entry + // + break; + } + } + + return (RETURN_SUCCESS); +} + +/** + Function to get the current Profile string. + + @retval NULL There are no installed profiles. + @return A semi-colon delimited list of profiles. +**/ +CONST CHAR16 * +EFIAPI +ShellCommandGetProfileList ( + VOID + ) +{ + return (mProfileList); +} + +/** + Checks if a command string has been registered for CommandString and if so it runs + the previously registered handler for that command with the command line. + + If CommandString is NULL, then ASSERT(). + + If Sections is specified, then each section name listed will be compared in a casesensitive + manner, to the section names described in Appendix B UEFI Shell 2.0 spec. If the section exists, + it will be appended to the returned help text. If the section does not exist, no + information will be returned. If Sections is NULL, then all help text information + available will be returned. + + @param[in] CommandString Pointer to the command name. This is the name + found on the command line in the shell. + @param[in, out] RetVal Pointer to the return vaule from the command handler. + + @param[in, out] CanAffectLE indicates whether this command's return value + needs to be placed into LASTERROR environment variable. + + @retval RETURN_SUCCESS The handler was run. + @retval RETURN_NOT_FOUND The CommandString did not match a registered + command name. + @sa SHELL_RUN_COMMAND +**/ +RETURN_STATUS +EFIAPI +ShellCommandRunCommandHandler ( + IN CONST CHAR16 *CommandString, + IN OUT SHELL_STATUS *RetVal, + IN OUT BOOLEAN *CanAffectLE OPTIONAL + ) +{ + SHELL_COMMAND_INTERNAL_LIST_ENTRY *Node; + EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *DynamicCommand; + + // + // assert for NULL parameters + // + ASSERT(CommandString != NULL); + + // + // check for the command + // + for ( Node = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetFirstNode(&mCommandList.Link) + ; !IsNull(&mCommandList.Link, &Node->Link) + ; Node = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetNextNode(&mCommandList.Link, &Node->Link) + ){ + ASSERT(Node->CommandString != NULL); + if (gUnicodeCollation->StriColl( + gUnicodeCollation, + (CHAR16*)CommandString, + Node->CommandString) == 0 + ){ + if (CanAffectLE != NULL) { + *CanAffectLE = Node->LastError; + } + if (RetVal != NULL) { + *RetVal = Node->CommandHandler(NULL, gST); + } else { + Node->CommandHandler(NULL, gST); + } + return (RETURN_SUCCESS); + } + } + + // + // An internal command was not found, try to find a dynamic command + // + DynamicCommand = (EFI_SHELL_DYNAMIC_COMMAND_PROTOCOL *)ShellCommandFindDynamicCommand(CommandString); + if (DynamicCommand != NULL) { + if (RetVal != NULL) { + *RetVal = DynamicCommand->Handler(DynamicCommand, gST, gEfiShellParametersProtocol, gEfiShellProtocol); + } else { + DynamicCommand->Handler(DynamicCommand, gST, gEfiShellParametersProtocol, gEfiShellProtocol); + } + return (RETURN_SUCCESS); + } + + return (RETURN_NOT_FOUND); +} + +/** + Checks if a command string has been registered for CommandString and if so it + returns the MAN filename specified for that command. + + If CommandString is NULL, then ASSERT(). + + @param[in] CommandString Pointer to the command name. This is the name + found on the command line in the shell.\ + + @retval NULL the commandString was not a registered command. + @return other the name of the MAN file. + @sa SHELL_GET_MAN_FILENAME +**/ +CONST CHAR16* +EFIAPI +ShellCommandGetManFileNameHandler ( + IN CONST CHAR16 *CommandString + ) +{ + SHELL_COMMAND_INTERNAL_LIST_ENTRY *Node; + + // + // assert for NULL parameters + // + ASSERT(CommandString != NULL); + + // + // check for the command + // + for ( Node = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetFirstNode(&mCommandList.Link) + ; !IsNull(&mCommandList.Link, &Node->Link) + ; Node = (SHELL_COMMAND_INTERNAL_LIST_ENTRY *)GetNextNode(&mCommandList.Link, &Node->Link) + ){ + ASSERT(Node->CommandString != NULL); + if (gUnicodeCollation->StriColl( + gUnicodeCollation, + (CHAR16*)CommandString, + Node->CommandString) == 0 + ){ + return (Node->GetManFileName()); + } + } + return (NULL); +} + +/** + Get the list of all available shell internal commands. This is a linked list + (via LIST_ENTRY structure). enumerate through it using the BaseLib linked + list functions. do not modify the values. + + @param[in] Sort TRUE to alphabetically sort the values first. FALSE otherwise. + + @return a Linked list of all available shell commands. +**/ +CONST COMMAND_LIST* +EFIAPI +ShellCommandGetCommandList ( + IN CONST BOOLEAN Sort + ) +{ +// if (!Sort) { +// return ((COMMAND_LIST*)(&mCommandList)); +// } + return ((COMMAND_LIST*)(&mCommandList)); +} + +/** + Registers aliases to be set as part of the initialization of the shell application. + + If Command is NULL, then ASSERT(). + If Alias is NULL, then ASSERT(). + + @param[in] Command Pointer to the Command + @param[in] Alias Pointer to Alias + + @retval RETURN_SUCCESS The handlers were registered. + @retval RETURN_OUT_OF_RESOURCES There are not enough resources available to + register the shell command. +**/ +RETURN_STATUS +EFIAPI +ShellCommandRegisterAlias ( + IN CONST CHAR16 *Command, + IN CONST CHAR16 *Alias + ) +{ + ALIAS_LIST *Node; + ALIAS_LIST *CommandAlias; + ALIAS_LIST *PrevCommandAlias; + INTN LexicalMatchValue; + + // + // Asserts for NULL + // + ASSERT(Command != NULL); + ASSERT(Alias != NULL); + + // + // allocate memory for new struct + // + Node = AllocateZeroPool(sizeof(ALIAS_LIST)); + if (Node == NULL) { + return RETURN_OUT_OF_RESOURCES; + } + Node->CommandString = AllocateCopyPool(StrSize(Command), Command); + if (Node->CommandString == NULL) { + FreePool (Node); + return RETURN_OUT_OF_RESOURCES; + } + Node->Alias = AllocateCopyPool(StrSize(Alias), Alias); + if (Node->Alias == NULL) { + FreePool (Node->CommandString); + FreePool (Node); + return RETURN_OUT_OF_RESOURCES; + } + + InsertHeadList (&mAliasList.Link, &Node->Link); + + // + // Move a new pre-defined registered alias to its sorted ordered location in the list + // + for ( CommandAlias = (ALIAS_LIST *)GetFirstNode (&mAliasList.Link), + PrevCommandAlias = (ALIAS_LIST *)GetFirstNode (&mAliasList.Link) + ; !IsNull (&mAliasList.Link, &CommandAlias->Link) + ; CommandAlias = (ALIAS_LIST *) GetNextNode (&mAliasList.Link, &CommandAlias->Link) ) { + // + // Get Lexical comparison value between PrevCommandAlias and CommandAlias List Entry + // + LexicalMatchValue = gUnicodeCollation->StriColl ( + gUnicodeCollation, + PrevCommandAlias->Alias, + CommandAlias->Alias + ); + + // + // Swap PrevCommandAlias and CommandAlias list entry if PrevCommandAlias list entry + // is alphabetically greater than CommandAlias list entry + // + if (LexicalMatchValue > 0) { + CommandAlias = (ALIAS_LIST *) SwapListEntries (&PrevCommandAlias->Link, &CommandAlias->Link); + } else if (LexicalMatchValue < 0) { + // + // PrevCommandAlias entry is lexically lower than CommandAlias entry + // + break; + } + } + + return (RETURN_SUCCESS); +} + +/** + Get the list of all shell alias commands. This is a linked list + (via LIST_ENTRY structure). enumerate through it using the BaseLib linked + list functions. do not modify the values. + + @return a Linked list of all requested shell alias'. +**/ +CONST ALIAS_LIST* +EFIAPI +ShellCommandGetInitAliasList ( + VOID + ) +{ + return (&mAliasList); +} + +/** + Determine if a given alias is on the list of built in alias'. + + @param[in] Alias The alias to test for + + @retval TRUE The alias is a built in alias + @retval FALSE The alias is not a built in alias +**/ +BOOLEAN +EFIAPI +ShellCommandIsOnAliasList( + IN CONST CHAR16 *Alias + ) +{ + ALIAS_LIST *Node; + + // + // assert for NULL parameter + // + ASSERT(Alias != NULL); + + // + // check for the Alias + // + for ( Node = (ALIAS_LIST *)GetFirstNode(&mAliasList.Link) + ; !IsNull(&mAliasList.Link, &Node->Link) + ; Node = (ALIAS_LIST *)GetNextNode(&mAliasList.Link, &Node->Link) + ){ + ASSERT(Node->CommandString != NULL); + ASSERT(Node->Alias != NULL); + if (gUnicodeCollation->StriColl( + gUnicodeCollation, + (CHAR16*)Alias, + Node->CommandString) == 0 + ){ + return (TRUE); + } + if (gUnicodeCollation->StriColl( + gUnicodeCollation, + (CHAR16*)Alias, + Node->Alias) == 0 + ){ + return (TRUE); + } + } + return (FALSE); +} + +/** + Function to determine current state of ECHO. Echo determines if lines from scripts + and ECHO commands are enabled. + + @retval TRUE Echo is currently enabled + @retval FALSE Echo is currently disabled +**/ +BOOLEAN +EFIAPI +ShellCommandGetEchoState( + VOID + ) +{ + return (mEchoState); +} + +/** + Function to set current state of ECHO. Echo determines if lines from scripts + and ECHO commands are enabled. + + If State is TRUE, Echo will be enabled. + If State is FALSE, Echo will be disabled. + + @param[in] State How to set echo. +**/ +VOID +EFIAPI +ShellCommandSetEchoState( + IN BOOLEAN State + ) +{ + mEchoState = State; +} + +/** + Indicate that the current shell or script should exit. + + @param[in] ScriptOnly TRUE if exiting a script; FALSE otherwise. + @param[in] ErrorCode The 64 bit error code to return. +**/ +VOID +EFIAPI +ShellCommandRegisterExit ( + IN BOOLEAN ScriptOnly, + IN CONST UINT64 ErrorCode + ) +{ + mExitRequested = (BOOLEAN)(!mExitRequested); + if (mExitRequested) { + mExitScript = ScriptOnly; + } else { + mExitScript = FALSE; + } + mExitCode = ErrorCode; +} + +/** + Retrieve the Exit indicator. + + @retval TRUE Exit was indicated. + @retval FALSE Exis was not indicated. +**/ +BOOLEAN +EFIAPI +ShellCommandGetExit ( + VOID + ) +{ + return (mExitRequested); +} + +/** + Retrieve the Exit code. + + If ShellCommandGetExit returns FALSE than the return from this is undefined. + + @return the value passed into RegisterExit. +**/ +UINT64 +EFIAPI +ShellCommandGetExitCode ( + VOID + ) +{ + return (mExitCode); +} +/** + Retrieve the Exit script indicator. + + If ShellCommandGetExit returns FALSE than the return from this is undefined. + + @retval TRUE ScriptOnly was indicated. + @retval FALSE ScriptOnly was not indicated. +**/ +BOOLEAN +EFIAPI +ShellCommandGetScriptExit ( + VOID + ) +{ + return (mExitScript); +} + +/** + Function to cleanup all memory from a SCRIPT_FILE structure. + + @param[in] Script The pointer to the structure to cleanup. +**/ +VOID +EFIAPI +DeleteScriptFileStruct ( + IN SCRIPT_FILE *Script + ) +{ + UINT8 LoopVar; + + if (Script == NULL) { + return; + } + + for (LoopVar = 0 ; LoopVar < Script->Argc ; LoopVar++) { + SHELL_FREE_NON_NULL(Script->Argv[LoopVar]); + } + if (Script->Argv != NULL) { + SHELL_FREE_NON_NULL(Script->Argv); + } + Script->CurrentCommand = NULL; + while (!IsListEmpty (&Script->CommandList)) { + Script->CurrentCommand = (SCRIPT_COMMAND_LIST *)GetFirstNode(&Script->CommandList); + if (Script->CurrentCommand != NULL) { + RemoveEntryList(&Script->CurrentCommand->Link); + if (Script->CurrentCommand->Cl != NULL) { + SHELL_FREE_NON_NULL(Script->CurrentCommand->Cl); + } + if (Script->CurrentCommand->Data != NULL) { + SHELL_FREE_NON_NULL(Script->CurrentCommand->Data); + } + SHELL_FREE_NON_NULL(Script->CurrentCommand); + } + } + SHELL_FREE_NON_NULL(Script->ScriptName); + SHELL_FREE_NON_NULL(Script); +} + +/** + Function to return a pointer to the currently running script file object. + + @retval NULL A script file is not currently running. + @return A pointer to the current script file object. +**/ +SCRIPT_FILE* +EFIAPI +ShellCommandGetCurrentScriptFile ( + VOID + ) +{ + SCRIPT_FILE_LIST *List; + if (IsListEmpty (&mScriptList.Link)) { + return (NULL); + } + List = ((SCRIPT_FILE_LIST*)GetFirstNode(&mScriptList.Link)); + return (List->Data); +} + +/** + Function to set a new script as the currently running one. + + This function will correctly stack and unstack nested scripts. + + @param[in] Script Pointer to new script information structure. if NULL + will remove and de-allocate the top-most Script structure. + + @return A pointer to the current running script file after this + change. NULL if removing the final script. +**/ +SCRIPT_FILE* +EFIAPI +ShellCommandSetNewScript ( + IN SCRIPT_FILE *Script OPTIONAL + ) +{ + SCRIPT_FILE_LIST *Node; + if (Script == NULL) { + if (IsListEmpty (&mScriptList.Link)) { + return (NULL); + } + Node = (SCRIPT_FILE_LIST *)GetFirstNode(&mScriptList.Link); + RemoveEntryList(&Node->Link); + DeleteScriptFileStruct(Node->Data); + FreePool(Node); + } else { + Node = AllocateZeroPool(sizeof(SCRIPT_FILE_LIST)); + if (Node == NULL) { + return (NULL); + } + Node->Data = Script; + InsertHeadList(&mScriptList.Link, &Node->Link); + } + return (ShellCommandGetCurrentScriptFile()); +} + +/** + Function to generate the next default mapping name. + + If the return value is not NULL then it must be callee freed. + + @param Type What kind of mapping name to make. + + @retval NULL a memory allocation failed. + @return a new map name string +**/ +CHAR16* +EFIAPI +ShellCommandCreateNewMappingName( + IN CONST SHELL_MAPPING_TYPE Type + ) +{ + CHAR16 *String; + ASSERT(Type < MappingTypeMax); + + String = NULL; + + String = AllocateZeroPool(PcdGet8(PcdShellMapNameLength) * sizeof(String[0])); + UnicodeSPrint( + String, + PcdGet8(PcdShellMapNameLength) * sizeof(String[0]), + Type == MappingTypeFileSystem?L"FS%d:":L"BLK%d:", + Type == MappingTypeFileSystem?mFsMaxCount++:mBlkMaxCount++); + + return (String); +} + +/** + Function to add a map node to the list of map items and update the "path" environment variable (optionally). + + If Path is TRUE (during initialization only), the path environment variable will also be updated to include + default paths on the new map name... + + Path should be FALSE when this function is called from the protocol SetMap function. + + @param[in] Name The human readable mapped name. + @param[in] DevicePath The Device Path for this map. + @param[in] Flags The Flags attribute for this map item. + @param[in] Path TRUE to update path, FALSE to skip this step (should only be TRUE during initialization). + + @retval EFI_SUCCESS The addition was sucessful. + @retval EFI_OUT_OF_RESOURCES A memory allocation failed. + @retval EFI_INVALID_PARAMETER A parameter was invalid. +**/ +EFI_STATUS +EFIAPI +ShellCommandAddMapItemAndUpdatePath( + IN CONST CHAR16 *Name, + IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath, + IN CONST UINT64 Flags, + IN CONST BOOLEAN Path + ) +{ + EFI_STATUS Status; + SHELL_MAP_LIST *MapListNode; + CONST CHAR16 *OriginalPath; + CHAR16 *NewPath; + UINTN NewPathSize; + + NewPathSize = 0; + NewPath = NULL; + OriginalPath = NULL; + Status = EFI_SUCCESS; + + MapListNode = AllocateZeroPool(sizeof(SHELL_MAP_LIST)); + if (MapListNode == NULL) { + Status = EFI_OUT_OF_RESOURCES; + } else { + MapListNode->Flags = Flags; + MapListNode->MapName = AllocateCopyPool(StrSize(Name), Name); + MapListNode->DevicePath = DuplicateDevicePath(DevicePath); + if ((MapListNode->MapName == NULL) || (MapListNode->DevicePath == NULL)){ + Status = EFI_OUT_OF_RESOURCES; + } else { + InsertTailList(&gShellMapList.Link, &MapListNode->Link); + } + } + if (EFI_ERROR(Status)) { + if (MapListNode != NULL) { + if (MapListNode->DevicePath != NULL) { + FreePool(MapListNode->DevicePath); + } + if (MapListNode->MapName != NULL) { + FreePool(MapListNode->MapName); + } + FreePool(MapListNode); + } + } else if (Path) { + // + // Since there was no error and Path was TRUE + // Now add the correct path for that mapping + // + OriginalPath = gEfiShellProtocol->GetEnv(L"path"); + ASSERT((NewPath == NULL && NewPathSize == 0) || (NewPath != NULL)); + if (OriginalPath != NULL) { + StrnCatGrow(&NewPath, &NewPathSize, OriginalPath, 0); + StrnCatGrow(&NewPath, &NewPathSize, L";", 0); + } + StrnCatGrow(&NewPath, &NewPathSize, Name, 0); + StrnCatGrow(&NewPath, &NewPathSize, L"\\efi\\tools\\;", 0); + StrnCatGrow(&NewPath, &NewPathSize, Name, 0); + StrnCatGrow(&NewPath, &NewPathSize, L"\\efi\\boot\\;", 0); + StrnCatGrow(&NewPath, &NewPathSize, Name, 0); + StrnCatGrow(&NewPath, &NewPathSize, L"\\", 0); + + Status = gEfiShellProtocol->SetEnv(L"path", NewPath, TRUE); + ASSERT_EFI_ERROR(Status); + FreePool(NewPath); + } + return (Status); +} + +/** + Creates the default map names for each device path in the system with + a protocol depending on the Type. + + Creates the consistent map names for each device path in the system with + a protocol depending on the Type. + + Note: This will reset all mappings in the system("map -r"). + + Also sets up the default path environment variable if Type is FileSystem. + + @retval EFI_SUCCESS All map names were created sucessfully. + @retval EFI_NOT_FOUND No protocols were found in the system. + @return Error returned from gBS->LocateHandle(). + + @sa LocateHandle +**/ +EFI_STATUS +EFIAPI +ShellCommandCreateInitialMappingsAndPaths( + VOID + ) +{ + EFI_STATUS Status; + EFI_HANDLE *HandleList; + UINTN Count; + EFI_DEVICE_PATH_PROTOCOL **DevicePathList; + CHAR16 *NewDefaultName; + CHAR16 *NewConsistName; + EFI_DEVICE_PATH_PROTOCOL **ConsistMappingTable; + SHELL_MAP_LIST *MapListNode; + CONST CHAR16 *CurDir; + CHAR16 *SplitCurDir; + CHAR16 *MapName; + SHELL_MAP_LIST *MapListItem; + + SplitCurDir = NULL; + MapName = NULL; + MapListItem = NULL; + HandleList = NULL; + + // + // Reset the static members back to zero + // + mFsMaxCount = 0; + mBlkMaxCount = 0; + + gEfiShellProtocol->SetEnv(L"path", L"", TRUE); + + // + // First empty out the existing list. + // + if (!IsListEmpty(&gShellMapList.Link)) { + for ( MapListNode = (SHELL_MAP_LIST *)GetFirstNode(&gShellMapList.Link) + ; !IsListEmpty(&gShellMapList.Link) + ; MapListNode = (SHELL_MAP_LIST *)GetFirstNode(&gShellMapList.Link) + ){ + RemoveEntryList(&MapListNode->Link); + SHELL_FREE_NON_NULL(MapListNode->DevicePath); + SHELL_FREE_NON_NULL(MapListNode->MapName); + SHELL_FREE_NON_NULL(MapListNode->CurrentDirectoryPath); + FreePool(MapListNode); + } // for loop + } + + // + // Find each handle with Simple File System + // + HandleList = GetHandleListByProtocol(&gEfiSimpleFileSystemProtocolGuid); + if (HandleList != NULL) { + // + // Do a count of the handles + // + for (Count = 0 ; HandleList[Count] != NULL ; Count++); + + // + // Get all Device Paths + // + DevicePathList = AllocateZeroPool(sizeof(EFI_DEVICE_PATH_PROTOCOL*) * Count); + if (DevicePathList == NULL) { + SHELL_FREE_NON_NULL (HandleList); + return EFI_OUT_OF_RESOURCES; + } + + for (Count = 0 ; HandleList[Count] != NULL ; Count++) { + DevicePathList[Count] = DevicePathFromHandle(HandleList[Count]); + } + + // + // Sort all DevicePaths + // + PerformQuickSort(DevicePathList, Count, sizeof(EFI_DEVICE_PATH_PROTOCOL*), DevicePathCompare); + + ShellCommandConsistMappingInitialize(&ConsistMappingTable); + // + // Assign new Mappings to all... + // + for (Count = 0 ; HandleList[Count] != NULL ; Count++) { + // + // Get default name first + // + NewDefaultName = ShellCommandCreateNewMappingName(MappingTypeFileSystem); + ASSERT(NewDefaultName != NULL); + Status = ShellCommandAddMapItemAndUpdatePath(NewDefaultName, DevicePathList[Count], 0, TRUE); + ASSERT_EFI_ERROR(Status); + FreePool(NewDefaultName); + + // + // Now do consistent name + // + NewConsistName = ShellCommandConsistMappingGenMappingName(DevicePathList[Count], ConsistMappingTable); + if (NewConsistName != NULL) { + Status = ShellCommandAddMapItemAndUpdatePath(NewConsistName, DevicePathList[Count], 0, FALSE); + ASSERT_EFI_ERROR(Status); + FreePool(NewConsistName); + } + } + + ShellCommandConsistMappingUnInitialize(ConsistMappingTable); + + SHELL_FREE_NON_NULL(HandleList); + SHELL_FREE_NON_NULL(DevicePathList); + + HandleList = NULL; + + // + //gShellCurMapping point to node of current file system in the gShellMapList. When reset all mappings, + //all nodes in the gShellMapList will be free. Then gShellCurMapping will be a dangling pointer, So, + //after created new mappings, we should reset the gShellCurMapping pointer back to node of current file system. + // + if (gShellCurMapping != NULL) { + gShellCurMapping = NULL; + CurDir = gEfiShellProtocol->GetEnv(L"cwd"); + if (CurDir != NULL) { + MapName = AllocateCopyPool (StrSize(CurDir), CurDir); + if (MapName == NULL) { + return EFI_OUT_OF_RESOURCES; + } + SplitCurDir = StrStr (MapName, L":"); + if (SplitCurDir == NULL) { + SHELL_FREE_NON_NULL (MapName); + return EFI_UNSUPPORTED; + } + *(SplitCurDir + 1) = CHAR_NULL; + MapListItem = ShellCommandFindMapItem (MapName); + if (MapListItem != NULL) { + gShellCurMapping = MapListItem; + } + SHELL_FREE_NON_NULL (MapName); + } + } + } else { + Count = (UINTN)-1; + } + + // + // Find each handle with Block Io + // + HandleList = GetHandleListByProtocol(&gEfiBlockIoProtocolGuid); + if (HandleList != NULL) { + for (Count = 0 ; HandleList[Count] != NULL ; Count++); + + // + // Get all Device Paths + // + DevicePathList = AllocateZeroPool(sizeof(EFI_DEVICE_PATH_PROTOCOL*) * Count); + if (DevicePathList == NULL) { + SHELL_FREE_NON_NULL (HandleList); + return EFI_OUT_OF_RESOURCES; + } + + for (Count = 0 ; HandleList[Count] != NULL ; Count++) { + DevicePathList[Count] = DevicePathFromHandle(HandleList[Count]); + } + + // + // Sort all DevicePaths + // + PerformQuickSort(DevicePathList, Count, sizeof(EFI_DEVICE_PATH_PROTOCOL*), DevicePathCompare); + + // + // Assign new Mappings to all... + // + for (Count = 0 ; HandleList[Count] != NULL ; Count++) { + // + // Get default name first + // + NewDefaultName = ShellCommandCreateNewMappingName(MappingTypeBlockIo); + ASSERT(NewDefaultName != NULL); + Status = ShellCommandAddMapItemAndUpdatePath(NewDefaultName, DevicePathList[Count], 0, FALSE); + ASSERT_EFI_ERROR(Status); + FreePool(NewDefaultName); + } + + SHELL_FREE_NON_NULL(HandleList); + SHELL_FREE_NON_NULL(DevicePathList); + } else if (Count == (UINTN)-1) { + return (EFI_NOT_FOUND); + } + + return (EFI_SUCCESS); +} + +/** + Add mappings for any devices without one. Do not change any existing maps. + + @retval EFI_SUCCESS The operation was successful. +**/ +EFI_STATUS +EFIAPI +ShellCommandUpdateMapping ( + VOID + ) +{ + EFI_STATUS Status; + EFI_HANDLE *HandleList; + UINTN Count; + EFI_DEVICE_PATH_PROTOCOL **DevicePathList; + CHAR16 *NewDefaultName; + CHAR16 *NewConsistName; + EFI_DEVICE_PATH_PROTOCOL **ConsistMappingTable; + + HandleList = NULL; + Status = EFI_SUCCESS; + + // + // remove mappings that represent removed devices. + // + + // + // Find each handle with Simple File System + // + HandleList = GetHandleListByProtocol(&gEfiSimpleFileSystemProtocolGuid); + if (HandleList != NULL) { + // + // Do a count of the handles + // + for (Count = 0 ; HandleList[Count] != NULL ; Count++); + + // + // Get all Device Paths + // + DevicePathList = AllocateZeroPool(sizeof(EFI_DEVICE_PATH_PROTOCOL*) * Count); + if (DevicePathList == NULL) { + return (EFI_OUT_OF_RESOURCES); + } + + for (Count = 0 ; HandleList[Count] != NULL ; Count++) { + DevicePathList[Count] = DevicePathFromHandle(HandleList[Count]); + } + + // + // Sort all DevicePaths + // + PerformQuickSort(DevicePathList, Count, sizeof(EFI_DEVICE_PATH_PROTOCOL*), DevicePathCompare); + + ShellCommandConsistMappingInitialize(&ConsistMappingTable); + + // + // Assign new Mappings to remainders + // + for (Count = 0 ; !EFI_ERROR(Status) && HandleList[Count] != NULL && !EFI_ERROR(Status); Count++) { + // + // Skip ones that already have + // + if (gEfiShellProtocol->GetMapFromDevicePath(&DevicePathList[Count]) != NULL) { + continue; + } + // + // Get default name + // + NewDefaultName = ShellCommandCreateNewMappingName(MappingTypeFileSystem); + if (NewDefaultName == NULL) { + Status = EFI_OUT_OF_RESOURCES; + break; + } + + // + // Call shell protocol SetMap function now... + // + Status = gEfiShellProtocol->SetMap(DevicePathList[Count], NewDefaultName); + + if (!EFI_ERROR(Status)) { + // + // Now do consistent name + // + NewConsistName = ShellCommandConsistMappingGenMappingName(DevicePathList[Count], ConsistMappingTable); + if (NewConsistName != NULL) { + Status = gEfiShellProtocol->SetMap(DevicePathList[Count], NewConsistName); + FreePool(NewConsistName); + } + } + + FreePool(NewDefaultName); + } + ShellCommandConsistMappingUnInitialize(ConsistMappingTable); + SHELL_FREE_NON_NULL(HandleList); + SHELL_FREE_NON_NULL(DevicePathList); + + HandleList = NULL; + } else { + Count = (UINTN)-1; + } + // + // Do it all over again for gEfiBlockIoProtocolGuid + // + + return (Status); +} + +/** + Converts a SHELL_FILE_HANDLE to an EFI_FILE_PROTOCOL*. + + @param[in] Handle The SHELL_FILE_HANDLE to convert. + + @return a EFI_FILE_PROTOCOL* representing the same file. +**/ +EFI_FILE_PROTOCOL* +EFIAPI +ConvertShellHandleToEfiFileProtocol( + IN CONST SHELL_FILE_HANDLE Handle + ) +{ + return ((EFI_FILE_PROTOCOL*)(Handle)); +} + +/** + Converts a EFI_FILE_PROTOCOL* to an SHELL_FILE_HANDLE. + + @param[in] Handle The pointer to EFI_FILE_PROTOCOL to convert. + @param[in] Path The path to the file for verification. + + @return A SHELL_FILE_HANDLE representing the same file. + @retval NULL There was not enough memory. +**/ +SHELL_FILE_HANDLE +EFIAPI +ConvertEfiFileProtocolToShellHandle( + IN CONST EFI_FILE_PROTOCOL *Handle, + IN CONST CHAR16 *Path + ) +{ + SHELL_COMMAND_FILE_HANDLE *Buffer; + BUFFER_LIST *NewNode; + + if (Path != NULL) { + Buffer = AllocateZeroPool(sizeof(SHELL_COMMAND_FILE_HANDLE)); + if (Buffer == NULL) { + return (NULL); + } + NewNode = AllocateZeroPool(sizeof(BUFFER_LIST)); + if (NewNode == NULL) { + SHELL_FREE_NON_NULL(Buffer); + return (NULL); + } + Buffer->FileHandle = (EFI_FILE_PROTOCOL*)Handle; + Buffer->Path = StrnCatGrow(&Buffer->Path, NULL, Path, 0); + if (Buffer->Path == NULL) { + SHELL_FREE_NON_NULL(NewNode); + SHELL_FREE_NON_NULL(Buffer); + return (NULL); + } + NewNode->Buffer = Buffer; + + InsertHeadList(&mFileHandleList.Link, &NewNode->Link); + } + return ((SHELL_FILE_HANDLE)(Handle)); +} + +/** + Find the path that was logged with the specified SHELL_FILE_HANDLE. + + @param[in] Handle The SHELL_FILE_HANDLE to query on. + + @return A pointer to the path for the file. +**/ +CONST CHAR16* +EFIAPI +ShellFileHandleGetPath( + IN CONST SHELL_FILE_HANDLE Handle + ) +{ + BUFFER_LIST *Node; + + for (Node = (BUFFER_LIST*)GetFirstNode(&mFileHandleList.Link) + ; !IsNull(&mFileHandleList.Link, &Node->Link) + ; Node = (BUFFER_LIST*)GetNextNode(&mFileHandleList.Link, &Node->Link) + ){ + if ((Node->Buffer) && (((SHELL_COMMAND_FILE_HANDLE *)Node->Buffer)->FileHandle == Handle)){ + return (((SHELL_COMMAND_FILE_HANDLE *)Node->Buffer)->Path); + } + } + return (NULL); +} + +/** + Remove a SHELL_FILE_HANDLE from the list of SHELL_FILE_HANDLES. + + @param[in] Handle The SHELL_FILE_HANDLE to remove. + + @retval TRUE The item was removed. + @retval FALSE The item was not found. +**/ +BOOLEAN +EFIAPI +ShellFileHandleRemove( + IN CONST SHELL_FILE_HANDLE Handle + ) +{ + BUFFER_LIST *Node; + + for (Node = (BUFFER_LIST*)GetFirstNode(&mFileHandleList.Link) + ; !IsNull(&mFileHandleList.Link, &Node->Link) + ; Node = (BUFFER_LIST*)GetNextNode(&mFileHandleList.Link, &Node->Link) + ){ + if ((Node->Buffer) && (((SHELL_COMMAND_FILE_HANDLE *)Node->Buffer)->FileHandle == Handle)){ + RemoveEntryList(&Node->Link); + SHELL_FREE_NON_NULL(((SHELL_COMMAND_FILE_HANDLE *)Node->Buffer)->Path); + SHELL_FREE_NON_NULL(Node->Buffer); + SHELL_FREE_NON_NULL(Node); + return (TRUE); + } + } + return (FALSE); +} + +/** + Function to determine if a SHELL_FILE_HANDLE is at the end of the file. + + This will NOT work on directories. + + If Handle is NULL, then ASSERT. + + @param[in] Handle the file handle + + @retval TRUE the position is at the end of the file + @retval FALSE the position is not at the end of the file +**/ +BOOLEAN +EFIAPI +ShellFileHandleEof( + IN SHELL_FILE_HANDLE Handle + ) +{ + EFI_FILE_INFO *Info; + UINT64 Pos; + BOOLEAN RetVal; + + // + // ASSERT if Handle is NULL + // + ASSERT(Handle != NULL); + + gEfiShellProtocol->GetFilePosition(Handle, &Pos); + Info = gEfiShellProtocol->GetFileInfo (Handle); + gEfiShellProtocol->SetFilePosition(Handle, Pos); + + if (Info == NULL) { + return (FALSE); + } + + if (Pos == Info->FileSize) { + RetVal = TRUE; + } else { + RetVal = FALSE; + } + + FreePool (Info); + + return (RetVal); +} + +/** + Frees any BUFFER_LIST defined type. + + @param[in] List The BUFFER_LIST object to free. +**/ +VOID +EFIAPI +FreeBufferList ( + IN BUFFER_LIST *List + ) +{ + BUFFER_LIST *BufferListEntry; + + if (List == NULL){ + return; + } + // + // enumerate through the buffer list and free all memory + // + for ( BufferListEntry = ( BUFFER_LIST *)GetFirstNode(&List->Link) + ; !IsListEmpty (&List->Link) + ; BufferListEntry = (BUFFER_LIST *)GetFirstNode(&List->Link) + ){ + RemoveEntryList(&BufferListEntry->Link); + if (BufferListEntry->Buffer != NULL) { + FreePool(BufferListEntry->Buffer); + } + FreePool(BufferListEntry); + } +} + +/** + Dump some hexadecimal data to the screen. + + @param[in] Indent How many spaces to indent the output. + @param[in] Offset The offset of the printing. + @param[in] DataSize The size in bytes of UserData. + @param[in] UserData The data to print out. +**/ +VOID +EFIAPI +DumpHex ( + IN UINTN Indent, + IN UINTN Offset, + IN UINTN DataSize, + IN VOID *UserData + ) +{ + UINT8 *Data; + + CHAR8 Val[50]; + + CHAR8 Str[20]; + + UINT8 TempByte; + UINTN Size; + UINTN Index; + + Data = UserData; + while (DataSize != 0) { + Size = 16; + if (Size > DataSize) { + Size = DataSize; + } + + for (Index = 0; Index < Size; Index += 1) { + TempByte = Data[Index]; + Val[Index * 3 + 0] = Hex[TempByte >> 4]; + Val[Index * 3 + 1] = Hex[TempByte & 0xF]; + Val[Index * 3 + 2] = (CHAR8) ((Index == 7) ? '-' : ' '); + Str[Index] = (CHAR8) ((TempByte < ' ' || TempByte > '~') ? '.' : TempByte); + } + + Val[Index * 3] = 0; + Str[Index] = 0; + ShellPrintEx(-1, -1, L"%*a%08X: %-48a *%a*\r\n", Indent, "", Offset, Val, Str); + + Data += Size; + Offset += Size; + DataSize -= Size; + } +} + +/** + Dump HEX data into buffer. + + @param[in] Buffer HEX data to be dumped in Buffer. + @param[in] Indent How many spaces to indent the output. + @param[in] Offset The offset of the printing. + @param[in] DataSize The size in bytes of UserData. + @param[in] UserData The data to print out. +**/ +CHAR16* +EFIAPI +CatSDumpHex ( + IN CHAR16 *Buffer, + IN UINTN Indent, + IN UINTN Offset, + IN UINTN DataSize, + IN VOID *UserData + ) +{ + UINT8 *Data; + UINT8 TempByte; + UINTN Size; + UINTN Index; + CHAR8 Val[50]; + CHAR8 Str[20]; + CHAR16 *RetVal; + CHAR16 *TempRetVal; + + Data = UserData; + RetVal = Buffer; + while (DataSize != 0) { + Size = 16; + if (Size > DataSize) { + Size = DataSize; + } + + for (Index = 0; Index < Size; Index += 1) { + TempByte = Data[Index]; + Val[Index * 3 + 0] = Hex[TempByte >> 4]; + Val[Index * 3 + 1] = Hex[TempByte & 0xF]; + Val[Index * 3 + 2] = (CHAR8) ((Index == 7) ? '-' : ' '); + Str[Index] = (CHAR8) ((TempByte < ' ' || TempByte > 'z') ? '.' : TempByte); + } + + Val[Index * 3] = 0; + Str[Index] = 0; + TempRetVal = CatSPrint (RetVal, L"%*a%08X: %-48a *%a*\r\n", Indent, "", Offset, Val, Str); + SHELL_FREE_NON_NULL (RetVal); + RetVal = TempRetVal; + + Data += Size; + Offset += Size; + DataSize -= Size; + } + + return RetVal; +} + +/** + ORDERED_COLLECTION_USER_COMPARE function for SHELL_SORT_UNIQUE_NAME objects. + + @param[in] Unique1AsVoid The first SHELL_SORT_UNIQUE_NAME object (Unique1), + passed in as a pointer-to-VOID. + + @param[in] Unique2AsVoid The second SHELL_SORT_UNIQUE_NAME object (Unique2), + passed in as a pointer-to-VOID. + + @retval <0 If Unique1 compares less than Unique2. + + @retval 0 If Unique1 compares equal to Unique2. + + @retval >0 If Unique1 compares greater than Unique2. +**/ +STATIC +INTN +EFIAPI +UniqueNameCompare ( + IN CONST VOID *Unique1AsVoid, + IN CONST VOID *Unique2AsVoid + ) +{ + CONST SHELL_SORT_UNIQUE_NAME *Unique1; + CONST SHELL_SORT_UNIQUE_NAME *Unique2; + + Unique1 = Unique1AsVoid; + Unique2 = Unique2AsVoid; + + // + // We need to cast away CONST for EFI_UNICODE_COLLATION_STRICOLL. + // + return gUnicodeCollation->StriColl ( + gUnicodeCollation, + (CHAR16 *)Unique1->Alias, + (CHAR16 *)Unique2->Alias + ); +} + +/** + ORDERED_COLLECTION_KEY_COMPARE function for SHELL_SORT_UNIQUE_NAME objects. + + @param[in] UniqueAliasAsVoid The CHAR16 string UniqueAlias, passed in as a + pointer-to-VOID. + + @param[in] UniqueAsVoid The SHELL_SORT_UNIQUE_NAME object (Unique), + passed in as a pointer-to-VOID. + + @retval <0 If UniqueAlias compares less than Unique->Alias. + + @retval 0 If UniqueAlias compares equal to Unique->Alias. + + @retval >0 If UniqueAlias compares greater than Unique->Alias. +**/ +STATIC +INTN +EFIAPI +UniqueNameAliasCompare ( + IN CONST VOID *UniqueAliasAsVoid, + IN CONST VOID *UniqueAsVoid + ) +{ + CONST CHAR16 *UniqueAlias; + CONST SHELL_SORT_UNIQUE_NAME *Unique; + + UniqueAlias = UniqueAliasAsVoid; + Unique = UniqueAsVoid; + + // + // We need to cast away CONST for EFI_UNICODE_COLLATION_STRICOLL. + // + return gUnicodeCollation->StriColl ( + gUnicodeCollation, + (CHAR16 *)UniqueAlias, + (CHAR16 *)Unique->Alias + ); +} + +/** + Sort an EFI_SHELL_FILE_INFO list, optionally moving duplicates to a separate + list. + + @param[in,out] FileList The list of EFI_SHELL_FILE_INFO objects to sort. + + If FileList is NULL on input, then FileList is + considered an empty, hence already sorted, list. + + Otherwise, if (*FileList) is NULL on input, then + EFI_INVALID_PARAMETER is returned. + + Otherwise, the caller is responsible for having + initialized (*FileList)->Link with + InitializeListHead(). No other fields in the + (**FileList) head element are accessed by this + function. + + On output, (*FileList) is sorted according to Order. + If Duplicates is NULL on input, then duplicate + elements are preserved, sorted stably, on + (*FileList). If Duplicates is not NULL on input, + then duplicates are moved (stably sorted) to the + new, dynamically allocated (*Duplicates) list. + + @param[out] Duplicates If Duplicates is NULL on input, (*FileList) will be + a monotonically ordered list on output, with + duplicates stably sorted. + + If Duplicates is not NULL on input, (*FileList) will + be a strictly monotonically oredered list on output, + with duplicates separated (stably sorted) to + (*Duplicates). All fields except Link will be + zero-initialized in the (**Duplicates) head element. + If no duplicates exist, then (*Duplicates) is set to + NULL on output. + + @param[in] Order Determines the comparison operation between + EFI_SHELL_FILE_INFO objects. + + @retval EFI_INVALID_PARAMETER (UINTN)Order is greater than or equal to + (UINTN)ShellSortFileListMax. Neither the + (*FileList) nor the (*Duplicates) list has + been modified. + + @retval EFI_INVALID_PARAMETER (*FileList) was NULL on input. Neither the + (*FileList) nor the (*Duplicates) list has + been modified. + + @retval EFI_OUT_OF_RESOURCES Memory allocation failed. Neither the + (*FileList) nor the (*Duplicates) list has + been modified. + + @retval EFI_SUCCESS Sorting successful, including the case when + FileList is NULL on input. +**/ +EFI_STATUS +EFIAPI +ShellSortFileList ( + IN OUT EFI_SHELL_FILE_INFO **FileList, + OUT EFI_SHELL_FILE_INFO **Duplicates OPTIONAL, + IN SHELL_SORT_FILE_LIST Order + ) +{ + LIST_ENTRY *FilesHead; + ORDERED_COLLECTION *Sort; + LIST_ENTRY *FileEntry; + EFI_SHELL_FILE_INFO *FileInfo; + SHELL_SORT_UNIQUE_NAME *Unique; + EFI_STATUS Status; + EFI_SHELL_FILE_INFO *Dupes; + LIST_ENTRY *NextFileEntry; + CONST CHAR16 *Alias; + ORDERED_COLLECTION_ENTRY *SortEntry; + LIST_ENTRY *TargetFileList; + ORDERED_COLLECTION_ENTRY *NextSortEntry; + VOID *UniqueAsVoid; + + if ((UINTN)Order >= (UINTN)ShellSortFileListMax) { + return EFI_INVALID_PARAMETER; + } + + if (FileList == NULL) { + // + // FileList is considered empty, hence already sorted, with no duplicates. + // + if (Duplicates != NULL) { + *Duplicates = NULL; + } + return EFI_SUCCESS; + } + + if (*FileList == NULL) { + return EFI_INVALID_PARAMETER; + } + FilesHead = &(*FileList)->Link; + + // + // Collect all the unique names. + // + Sort = OrderedCollectionInit (UniqueNameCompare, UniqueNameAliasCompare); + if (Sort == NULL) { + return EFI_OUT_OF_RESOURCES; + } + + BASE_LIST_FOR_EACH (FileEntry, FilesHead) { + FileInfo = (EFI_SHELL_FILE_INFO *)FileEntry; + + // + // Try to record the name of this file as a unique name. + // + Unique = AllocatePool (sizeof (*Unique)); + if (Unique == NULL) { + Status = EFI_OUT_OF_RESOURCES; + goto UninitSort; + } + Unique->Alias = ((Order == ShellSortFileListByFileName) ? + FileInfo->FileName : + FileInfo->FullName); + InitializeListHead (&Unique->SameNameList); + + Status = OrderedCollectionInsert (Sort, NULL, Unique); + if (EFI_ERROR (Status)) { + // + // Only two errors are possible: memory allocation failed, or this name + // has been encountered before. In either case, the + // SHELL_SORT_UNIQUE_NAME object being constructed has to be released. + // + FreePool (Unique); + // + // Memory allocation failure is fatal, while having seen the same name + // before is normal. + // + if (Status == EFI_OUT_OF_RESOURCES) { + goto UninitSort; + } + ASSERT (Status == EFI_ALREADY_STARTED); + } + } + + // + // Set Dupes to suppress incorrect compiler/analyzer warnings. + // + Dupes = NULL; + + // + // If separation of duplicates has been requested, allocate the list for + // them. + // + if (Duplicates != NULL) { + Dupes = AllocateZeroPool (sizeof (*Dupes)); + if (Dupes == NULL) { + Status = EFI_OUT_OF_RESOURCES; + goto UninitSort; + } + InitializeListHead (&Dupes->Link); + } + + // + // No memory allocation beyond this point; thus, no chance to fail. We can + // now migrate the EFI_SHELL_FILE_INFO objects from (*FileList) to Sort. + // + BASE_LIST_FOR_EACH_SAFE (FileEntry, NextFileEntry, FilesHead) { + FileInfo = (EFI_SHELL_FILE_INFO *)FileEntry; + // + // Look up the SHELL_SORT_UNIQUE_NAME that matches FileInfo's name. + // + Alias = ((Order == ShellSortFileListByFileName) ? + FileInfo->FileName : + FileInfo->FullName); + SortEntry = OrderedCollectionFind (Sort, Alias); + ASSERT (SortEntry != NULL); + Unique = OrderedCollectionUserStruct (SortEntry); + // + // Move FileInfo from (*FileList) to the end of the list of files whose + // names all compare identical to FileInfo's name. + // + RemoveEntryList (&FileInfo->Link); + InsertTailList (&Unique->SameNameList, &FileInfo->Link); + } + + // + // All EFI_SHELL_FILE_INFO objects originally in (*FileList) have been + // distributed to Sort. Now migrate them back to (*FileList), advancing in + // unique name order. + // + for (SortEntry = OrderedCollectionMin (Sort); + SortEntry != NULL; + SortEntry = OrderedCollectionNext (SortEntry)) { + Unique = OrderedCollectionUserStruct (SortEntry); + // + // The first FileInfo encountered for each unique name goes back on + // (*FileList) unconditionally. Further FileInfo instances for the same + // unique name -- that is, duplicates -- are either returned to (*FileList) + // or separated, dependent on the caller's request. + // + TargetFileList = FilesHead; + BASE_LIST_FOR_EACH_SAFE (FileEntry, NextFileEntry, &Unique->SameNameList) { + RemoveEntryList (FileEntry); + InsertTailList (TargetFileList, FileEntry); + if (Duplicates != NULL) { + TargetFileList = &Dupes->Link; + } + } + } + + // + // We're done. If separation of duplicates has been requested, output the + // list of duplicates -- and free that list at once, if it's empty (i.e., if + // no duplicates have been found). + // + if (Duplicates != NULL) { + if (IsListEmpty (&Dupes->Link)) { + FreePool (Dupes); + *Duplicates = NULL; + } else { + *Duplicates = Dupes; + } + } + Status = EFI_SUCCESS; + + // + // Fall through. + // +UninitSort: + for (SortEntry = OrderedCollectionMin (Sort); + SortEntry != NULL; + SortEntry = NextSortEntry) { + NextSortEntry = OrderedCollectionNext (SortEntry); + OrderedCollectionDelete (Sort, SortEntry, &UniqueAsVoid); + Unique = UniqueAsVoid; + ASSERT (IsListEmpty (&Unique->SameNameList)); + FreePool (Unique); + } + OrderedCollectionUninit (Sort); + + return Status; +} |