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system76-edk2/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c
Michael Kubacki 07251f3c6a MdeModulePkg: Fix conditionally uninitialized variables 
Fixes CodeQL alerts for CWE-457:
https://cwe.mitre.org/data/definitions/457.html

Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Erich McMillan <emcmillan@microsoft.com>
Cc: Guomin Jiang <guomin.jiang@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Michael Kubacki <mikuback@linux.microsoft.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Zhichao Gao <zhichao.gao@intel.com>
Co-authored-by: Erich McMillan <emcmillan@microsoft.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Oliver Smith-Denny <osd@smith-denny.com>
2023-04-03 15:29:08 +00:00

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/** @file
File explorer related functions.
Copyright (c) 2004 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "FileExplorer.h"
EFI_GUID FileExplorerGuid = EFI_FILE_EXPLORE_FORMSET_GUID;
///
/// File system selection menu
///
MENU_OPTION mFsOptionMenu = {
MENU_OPTION_SIGNATURE,
{ NULL },
0,
FALSE
};
FILE_EXPLORER_CALLBACK_DATA gFileExplorerPrivate = {
FILE_EXPLORER_CALLBACK_DATA_SIGNATURE,
NULL,
NULL,
{
LibExtractConfig,
LibRouteConfig,
LibCallback
},
NULL,
&mFsOptionMenu,
0
};
HII_VENDOR_DEVICE_PATH *gHiiVendorDevicePath;
HII_VENDOR_DEVICE_PATH FeHiiVendorDevicePath = {
{
{
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
{
(UINT8)(sizeof (VENDOR_DEVICE_PATH)),
(UINT8)((sizeof (VENDOR_DEVICE_PATH)) >> 8)
}
},
//
// Will be replace with gEfiCallerIdGuid in code.
//
{ 0x0, 0x0, 0x0, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 }
}
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
(UINT8)(END_DEVICE_PATH_LENGTH),
(UINT8)((END_DEVICE_PATH_LENGTH) >> 8)
}
}
};
VOID *mLibStartOpCodeHandle = NULL;
VOID *mLibEndOpCodeHandle = NULL;
EFI_IFR_GUID_LABEL *mLibStartLabel = NULL;
EFI_IFR_GUID_LABEL *mLibEndLabel = NULL;
UINT16 mQuestionIdUpdate;
CHAR16 mNewFileName[MAX_FILE_NAME_LEN];
CHAR16 mNewFolderName[MAX_FOLDER_NAME_LEN];
UINTN mNewFileQuestionId = NEW_FILE_QUESTION_ID_BASE;
UINTN mNewFolderQuestionId = NEW_FOLDER_QUESTION_ID_BASE;
/**
Create a new file or folder in current directory.
@param FileName Point to the fileNmae or folder.
@param CreateFile CreateFile== TRUE means create a new file.
CreateFile== FALSE means create a new Folder.
**/
EFI_STATUS
LibCreateNewFile (
IN CHAR16 *FileName,
IN BOOLEAN CreateFile
);
/**
This function allows a caller to extract the current configuration for one
or more named elements from the target driver.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Request A null-terminated Unicode string in <ConfigRequest> format.
@param Progress On return, points to a character in the Request string.
Points to the string's null terminator if request was successful.
Points to the most recent '&' before the first failing name/value
pair (or the beginning of the string if the failure is in the
first name/value pair) if the request was not successful.
@param Results A null-terminated Unicode string in <ConfigAltResp> format which
has all values filled in for the names in the Request string.
String to be allocated by the called function.
@retval EFI_INVALID_PARAMETER Request is illegal syntax, or unknown name.
@retval EFI_NOT_FOUND Routing data doesn't match any storage in this driver.
**/
EFI_STATUS
EFIAPI
LibExtractConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Request,
OUT EFI_STRING *Progress,
OUT EFI_STRING *Results
)
{
if ((Progress == NULL) || (Results == NULL)) {
return EFI_INVALID_PARAMETER;
}
*Progress = Request;
return EFI_NOT_FOUND;
}
/**
This function processes the results of changes in configuration.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Configuration A null-terminated Unicode string in <ConfigResp> format.
@param Progress A pointer to a string filled in with the offset of the most
recent '&' before the first failing name/value pair (or the
beginning of the string if the failure is in the first
name/value pair) or the terminating NULL if all was successful.
@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_NOT_FOUND Routing data doesn't match any storage in this driver.
**/
EFI_STATUS
EFIAPI
LibRouteConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Configuration,
OUT EFI_STRING *Progress
)
{
if ((Configuration == NULL) || (Progress == NULL)) {
return EFI_INVALID_PARAMETER;
}
*Progress = Configuration;
return EFI_NOT_FOUND;
}
/**
This function processes the results of changes in configuration.
When user select a interactive opcode, this callback will be triggered.
Based on the Question(QuestionId) that triggers the callback, the corresponding
actions is performed. It handles:
1) Process the axtra action or exit file explorer when user select one file .
2) update of file content if a dir is selected.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Action Specifies the type of action taken by the browser.
@param QuestionId A unique value which is sent to the original exporting driver
so that it can identify the type of data to expect.
@param Type The type of value for the question.
@param Value A pointer to the data being sent to the original exporting driver.
@param ActionRequest On return, points to the action requested by the callback function.
@retval EFI_SUCCESS The callback successfully handled the action.
@retval other error Error occur when parse one directory.
**/
EFI_STATUS
EFIAPI
LibCallback (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN EFI_BROWSER_ACTION Action,
IN EFI_QUESTION_ID QuestionId,
IN UINT8 Type,
IN EFI_IFR_TYPE_VALUE *Value,
OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
)
{
EFI_STATUS Status;
BOOLEAN NeedExit;
CHAR16 *NewFileName;
CHAR16 *NewFolderName;
NeedExit = TRUE;
NewFileName = NULL;
NewFolderName = NULL;
if ((Action != EFI_BROWSER_ACTION_CHANGING) && (Action != EFI_BROWSER_ACTION_CHANGED)) {
//
// Do nothing for other UEFI Action. Only do call back when data is changed.
//
return EFI_UNSUPPORTED;
}
if (Action == EFI_BROWSER_ACTION_CHANGED) {
if ((Value == NULL) || (ActionRequest == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (QuestionId == KEY_VALUE_CREATE_FILE_AND_EXIT) {
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
if (!IsZeroBuffer (mNewFileName, sizeof (mNewFileName))) {
Status = LibCreateNewFile (mNewFileName, TRUE);
ZeroMem (mNewFileName, sizeof (mNewFileName));
}
}
if (QuestionId == KEY_VALUE_NO_CREATE_FILE_AND_EXIT) {
ZeroMem (mNewFileName, sizeof (mNewFileName));
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
}
if (QuestionId == KEY_VALUE_CREATE_FOLDER_AND_EXIT) {
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
if (!IsZeroBuffer (mNewFolderName, sizeof (mNewFolderName))) {
Status = LibCreateNewFile (mNewFolderName, FALSE);
ZeroMem (mNewFolderName, sizeof (mNewFolderName));
}
}
if (QuestionId == KEY_VALUE_NO_CREATE_FOLDER_AND_EXIT) {
ZeroMem (mNewFolderName, sizeof (mNewFolderName));
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
}
if (QuestionId == NEW_FILE_NAME_ID) {
NewFileName = HiiGetString (gFileExplorerPrivate.FeHiiHandle, Value->string, NULL);
if (NewFileName != NULL) {
StrCpyS (mNewFileName, MAX_FILE_NAME_LEN, NewFileName);
FreePool (NewFileName);
NewFileName = NULL;
} else {
return EFI_INVALID_PARAMETER;
}
}
if (QuestionId == NEW_FOLDER_NAME_ID) {
NewFolderName = HiiGetString (gFileExplorerPrivate.FeHiiHandle, Value->string, NULL);
if (NewFolderName != NULL) {
StrCpyS (mNewFolderName, MAX_FOLDER_NAME_LEN, NewFolderName);
FreePool (NewFolderName);
NewFolderName = NULL;
} else {
return EFI_INVALID_PARAMETER;
}
}
if (QuestionId >= FILE_OPTION_OFFSET) {
LibGetDevicePath (QuestionId);
//
// Process the extra action.
//
if (gFileExplorerPrivate.ChooseHandler != NULL) {
NeedExit = gFileExplorerPrivate.ChooseHandler (gFileExplorerPrivate.RetDevicePath);
}
if (NeedExit) {
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
}
}
} else if (Action == EFI_BROWSER_ACTION_CHANGING) {
if (Value == NULL) {
return EFI_INVALID_PARAMETER;
}
if (QuestionId >= FILE_OPTION_OFFSET) {
LibGetDevicePath (QuestionId);
Status = LibUpdateFileExplorer (QuestionId);
if (EFI_ERROR (Status)) {
return Status;
}
}
}
return EFI_SUCCESS;
}
/**
Create a menu entry by given menu type.
@retval NULL If failed to create the menu.
@return the new menu entry.
**/
MENU_ENTRY *
LibCreateMenuEntry (
VOID
)
{
MENU_ENTRY *MenuEntry;
//
// Create new menu entry
//
MenuEntry = AllocateZeroPool (sizeof (MENU_ENTRY));
if (MenuEntry == NULL) {
return NULL;
}
MenuEntry->VariableContext = AllocateZeroPool (sizeof (FILE_CONTEXT));
if (MenuEntry->VariableContext == NULL) {
FreePool (MenuEntry);
return NULL;
}
MenuEntry->Signature = MENU_ENTRY_SIGNATURE;
return MenuEntry;
}
/**
Get the Menu Entry from the list in Menu Entry List.
If MenuNumber is great or equal to the number of Menu
Entry in the list, then ASSERT.
@param MenuOption The Menu Entry List to read the menu entry.
@param MenuNumber The index of Menu Entry.
@return The Menu Entry.
**/
MENU_ENTRY *
LibGetMenuEntry (
MENU_OPTION *MenuOption,
UINTN MenuNumber
)
{
MENU_ENTRY *NewMenuEntry;
UINTN Index;
LIST_ENTRY *List;
ASSERT (MenuNumber < MenuOption->MenuNumber);
List = MenuOption->Head.ForwardLink;
for (Index = 0; Index < MenuNumber; Index++) {
List = List->ForwardLink;
}
NewMenuEntry = CR (List, MENU_ENTRY, Link, MENU_ENTRY_SIGNATURE);
return NewMenuEntry;
}
/**
Free up all resource allocated for a BM_MENU_ENTRY.
@param MenuEntry A pointer to BM_MENU_ENTRY.
**/
VOID
LibDestroyMenuEntry (
MENU_ENTRY *MenuEntry
)
{
FILE_CONTEXT *FileContext;
FileContext = (FILE_CONTEXT *)MenuEntry->VariableContext;
if (!FileContext->IsRoot) {
if (FileContext->DevicePath != NULL) {
FreePool (FileContext->DevicePath);
}
} else {
if (FileContext->FileHandle != NULL) {
FileContext->FileHandle->Close (FileContext->FileHandle);
}
}
if (FileContext->FileName != NULL) {
FreePool (FileContext->FileName);
}
FreePool (FileContext);
if (MenuEntry->DisplayString != NULL) {
FreePool (MenuEntry->DisplayString);
}
if (MenuEntry->HelpString != NULL) {
FreePool (MenuEntry->HelpString);
}
FreePool (MenuEntry);
}
/**
Free resources allocated in Allocate Rountine.
@param FreeMenu Menu to be freed
**/
VOID
LibFreeMenu (
MENU_OPTION *FreeMenu
)
{
MENU_ENTRY *MenuEntry;
while (!IsListEmpty (&FreeMenu->Head)) {
MenuEntry = CR (
FreeMenu->Head.ForwardLink,
MENU_ENTRY,
Link,
MENU_ENTRY_SIGNATURE
);
RemoveEntryList (&MenuEntry->Link);
LibDestroyMenuEntry (MenuEntry);
}
FreeMenu->MenuNumber = 0;
}
/**
Function opens and returns a file handle to the root directory of a volume.
@param DeviceHandle A handle for a device
@return A valid file handle or NULL is returned
**/
EFI_FILE_HANDLE
LibOpenRoot (
IN EFI_HANDLE DeviceHandle
)
{
EFI_STATUS Status;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Volume;
EFI_FILE_HANDLE File;
File = NULL;
//
// File the file system interface to the device
//
Status = gBS->HandleProtocol (
DeviceHandle,
&gEfiSimpleFileSystemProtocolGuid,
(VOID *)&Volume
);
//
// Open the root directory of the volume
//
if (!EFI_ERROR (Status)) {
Status = Volume->OpenVolume (
Volume,
&File
);
}
//
// Done
//
return EFI_ERROR (Status) ? NULL : File;
}
/**
This function converts an input device structure to a Unicode string.
@param DevPath A pointer to the device path structure.
@return A new allocated Unicode string that represents the device path.
**/
CHAR16 *
LibDevicePathToStr (
IN EFI_DEVICE_PATH_PROTOCOL *DevPath
)
{
EFI_STATUS Status;
CHAR16 *ToText;
EFI_DEVICE_PATH_TO_TEXT_PROTOCOL *DevPathToText;
if (DevPath == NULL) {
return NULL;
}
Status = gBS->LocateProtocol (
&gEfiDevicePathToTextProtocolGuid,
NULL,
(VOID **)&DevPathToText
);
ASSERT_EFI_ERROR (Status);
ToText = DevPathToText->ConvertDevicePathToText (
DevPath,
FALSE,
TRUE
);
ASSERT (ToText != NULL);
return ToText;
}
/**
Duplicate a string.
@param Src The source.
@return A new string which is duplicated copy of the source.
@retval NULL If there is not enough memory.
**/
CHAR16 *
LibStrDuplicate (
IN CHAR16 *Src
)
{
CHAR16 *Dest;
UINTN Size;
Size = StrSize (Src);
Dest = AllocateZeroPool (Size);
ASSERT (Dest != NULL);
if (Dest != NULL) {
CopyMem (Dest, Src, Size);
}
return Dest;
}
/**
Function gets the file information from an open file descriptor, and stores it
in a buffer allocated from pool.
@param FHand File Handle.
@param InfoType Info type need to get.
@retval A pointer to a buffer with file information or NULL is returned
**/
VOID *
LibFileInfo (
IN EFI_FILE_HANDLE FHand,
IN EFI_GUID *InfoType
)
{
EFI_STATUS Status;
EFI_FILE_INFO *Buffer;
UINTN BufferSize;
Buffer = NULL;
BufferSize = 0;
Status = FHand->GetInfo (
FHand,
InfoType,
&BufferSize,
Buffer
);
if (Status == EFI_BUFFER_TOO_SMALL) {
Buffer = AllocatePool (BufferSize);
ASSERT (Buffer != NULL);
}
Status = FHand->GetInfo (
FHand,
InfoType,
&BufferSize,
Buffer
);
return Buffer;
}
/**
Get file type base on the file name.
Just cut the file name, from the ".". eg ".efi"
@param FileName File need to be checked.
@retval the file type string.
**/
CHAR16 *
LibGetTypeFromName (
IN CHAR16 *FileName
)
{
UINTN Index;
Index = StrLen (FileName) - 1;
while ((FileName[Index] != L'.') && (Index != 0)) {
Index--;
}
return Index == 0 ? NULL : &FileName[Index];
}
/**
Converts the unicode character of the string from uppercase to lowercase.
This is a internal function.
@param ConfigString String to be converted
**/
VOID
LibToLowerString (
IN CHAR16 *String
)
{
CHAR16 *TmpStr;
for (TmpStr = String; *TmpStr != L'\0'; TmpStr++) {
if ((*TmpStr >= L'A') && (*TmpStr <= L'Z')) {
*TmpStr = (CHAR16)(*TmpStr - L'A' + L'a');
}
}
}
/**
Check whether current FileName point to a valid
Efi Image File.
@param FileName File need to be checked.
@retval TRUE Is Efi Image
@retval FALSE Not a valid Efi Image
**/
BOOLEAN
LibIsSupportedFileType (
IN UINT16 *FileName
)
{
CHAR16 *InputFileType;
CHAR16 *TmpStr;
BOOLEAN IsSupported;
if (gFileExplorerPrivate.FileType == NULL) {
return TRUE;
}
InputFileType = LibGetTypeFromName (FileName);
//
// If the file not has *.* style, always return TRUE.
//
if (InputFileType == NULL) {
return TRUE;
}
TmpStr = AllocateCopyPool (StrSize (InputFileType), InputFileType);
ASSERT (TmpStr != NULL);
LibToLowerString (TmpStr);
IsSupported = (StrStr (gFileExplorerPrivate.FileType, TmpStr) == NULL ? FALSE : TRUE);
FreePool (TmpStr);
return IsSupported;
}
/**
Append file name to existing file name.
@param Str1 The existing file name
@param Str2 The file name to be appended
@return Allocate a new string to hold the appended result.
Caller is responsible to free the returned string.
**/
CHAR16 *
LibAppendFileName (
IN CHAR16 *Str1,
IN CHAR16 *Str2
)
{
UINTN Size1;
UINTN Size2;
UINTN MaxLen;
CHAR16 *Str;
CHAR16 *TmpStr;
CHAR16 *Ptr;
CHAR16 *LastSlash;
Size1 = StrSize (Str1);
Size2 = StrSize (Str2);
//
// Check overflow
//
if (((MAX_UINTN - Size1) < Size2) || ((MAX_UINTN - Size1 - Size2) < sizeof (CHAR16))) {
return NULL;
}
MaxLen = (Size1 + Size2 + sizeof (CHAR16))/ sizeof (CHAR16);
Str = AllocateZeroPool (Size1 + Size2 + sizeof (CHAR16));
ASSERT (Str != NULL);
TmpStr = AllocateZeroPool (Size1 + Size2 + sizeof (CHAR16));
ASSERT (TmpStr != NULL);
StrCpyS (Str, MaxLen, Str1);
if (!((*Str == '\\') && (*(Str + 1) == 0))) {
StrCatS (Str, MaxLen, L"\\");
}
StrCatS (Str, MaxLen, Str2);
Ptr = Str;
LastSlash = Str;
while (*Ptr != 0) {
if ((*Ptr == '\\') && (*(Ptr + 1) == '.') && (*(Ptr + 2) == '.') && (*(Ptr + 3) == L'\\')) {
//
// Convert "\Name\..\" to "\"
// DO NOT convert the .. if it is at the end of the string. This will
// break the .. behavior in changing directories.
//
//
// Use TmpStr as a backup, as StrCpyS in BaseLib does not handle copy of two strings
// that overlap.
//
StrCpyS (TmpStr, MaxLen, Ptr + 3);
StrCpyS (LastSlash, MaxLen - ((UINTN)LastSlash - (UINTN)Str) / sizeof (CHAR16), TmpStr);
Ptr = LastSlash;
} else if ((*Ptr == '\\') && (*(Ptr + 1) == '.') && (*(Ptr + 2) == '\\')) {
//
// Convert a "\.\" to a "\"
//
//
// Use TmpStr as a backup, as StrCpyS in BaseLib does not handle copy of two strings
// that overlap.
//
StrCpyS (TmpStr, MaxLen, Ptr + 2);
StrCpyS (Ptr, MaxLen - ((UINTN)Ptr - (UINTN)Str) / sizeof (CHAR16), TmpStr);
Ptr = LastSlash;
} else if (*Ptr == '\\') {
LastSlash = Ptr;
}
Ptr++;
}
FreePool (TmpStr);
return Str;
}
/**
This function build the FsOptionMenu list which records all
available file system in the system. They includes all instances
of EFI_SIMPLE_FILE_SYSTEM_PROTOCOL, all instances of EFI_LOAD_FILE_SYSTEM.
@retval EFI_SUCCESS Success find the file system
@retval EFI_OUT_OF_RESOURCES Can not create menu entry
**/
EFI_STATUS
LibFindFileSystem (
VOID
)
{
UINTN NoSimpleFsHandles;
EFI_HANDLE *SimpleFsHandle;
UINT16 *VolumeLabel;
UINTN Index;
EFI_STATUS Status;
MENU_ENTRY *MenuEntry;
FILE_CONTEXT *FileContext;
UINTN OptionNumber;
EFI_FILE_SYSTEM_VOLUME_LABEL *Info;
NoSimpleFsHandles = 0;
OptionNumber = 0;
//
// Locate Handles that support Simple File System protocol
//
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiSimpleFileSystemProtocolGuid,
NULL,
&NoSimpleFsHandles,
&SimpleFsHandle
);
if (!EFI_ERROR (Status)) {
//
// Find all the instances of the File System prototocol
//
for (Index = 0; Index < NoSimpleFsHandles; Index++) {
//
// Allocate pool for this load option
//
MenuEntry = LibCreateMenuEntry ();
if (NULL == MenuEntry) {
FreePool (SimpleFsHandle);
return EFI_OUT_OF_RESOURCES;
}
FileContext = (FILE_CONTEXT *)MenuEntry->VariableContext;
FileContext->DeviceHandle = SimpleFsHandle[Index];
FileContext->FileHandle = LibOpenRoot (FileContext->DeviceHandle);
if (FileContext->FileHandle == NULL) {
LibDestroyMenuEntry (MenuEntry);
continue;
}
MenuEntry->HelpString = LibDevicePathToStr (DevicePathFromHandle (FileContext->DeviceHandle));
FileContext->FileName = LibStrDuplicate (L"\\");
FileContext->DevicePath = FileDevicePath (FileContext->DeviceHandle, FileContext->FileName);
FileContext->IsDir = TRUE;
FileContext->IsRoot = TRUE;
//
// Get current file system's Volume Label
//
Info = (EFI_FILE_SYSTEM_VOLUME_LABEL *)LibFileInfo (FileContext->FileHandle, &gEfiFileSystemVolumeLabelInfoIdGuid);
if (Info == NULL) {
VolumeLabel = L"NO FILE SYSTEM INFO";
} else {
VolumeLabel = Info->VolumeLabel;
if (*VolumeLabel == 0x0000) {
VolumeLabel = L"NO VOLUME LABEL";
}
}
MenuEntry->DisplayString = AllocateZeroPool (MAX_CHAR);
ASSERT (MenuEntry->DisplayString != NULL);
UnicodeSPrint (
MenuEntry->DisplayString,
MAX_CHAR,
L"%s, [%s]",
VolumeLabel,
MenuEntry->HelpString
);
MenuEntry->DisplayStringToken = HiiSetString (
gFileExplorerPrivate.FeHiiHandle,
0,
MenuEntry->DisplayString,
NULL
);
if (Info != NULL) {
FreePool (Info);
}
OptionNumber++;
InsertTailList (&gFileExplorerPrivate.FsOptionMenu->Head, &MenuEntry->Link);
}
}
if (NoSimpleFsHandles != 0) {
FreePool (SimpleFsHandle);
}
gFileExplorerPrivate.FsOptionMenu->MenuNumber = OptionNumber;
return EFI_SUCCESS;
}
/**
Find the file handle from the input menu info.
@param MenuEntry Input Menu info.
@param RetFileHandle Return the file handle for the input device path.
@retval EFI_SUCESS Find the file handle success.
@retval Other Find the file handle failure.
**/
EFI_STATUS
LibGetFileHandleFromMenu (
IN MENU_ENTRY *MenuEntry,
OUT EFI_FILE_HANDLE *RetFileHandle
)
{
EFI_FILE_HANDLE Dir;
EFI_FILE_HANDLE NewDir;
FILE_CONTEXT *FileContext;
EFI_STATUS Status;
FileContext = (FILE_CONTEXT *)MenuEntry->VariableContext;
Dir = FileContext->FileHandle;
//
// Open current directory to get files from it
//
Status = Dir->Open (
Dir,
&NewDir,
FileContext->FileName,
EFI_FILE_READ_ONLY,
0
);
if (EFI_ERROR (Status)) {
return Status;
}
if (!FileContext->IsRoot) {
Dir->Close (Dir);
}
*RetFileHandle = NewDir;
return EFI_SUCCESS;
}
/**
Find the file handle from the input device path info.
@param RootDirectory Device path info.
@param RetFileHandle Return the file handle for the input device path.
@param ParentFileName Parent file name.
@param DeviceHandle Driver handle for this partition.
@retval EFI_SUCESS Find the file handle success.
@retval Other Find the file handle failure.
**/
EFI_STATUS
LibGetFileHandleFromDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *RootDirectory,
OUT EFI_FILE_HANDLE *RetFileHandle,
OUT UINT16 **ParentFileName,
OUT EFI_HANDLE *DeviceHandle
)
{
EFI_DEVICE_PATH_PROTOCOL *DevicePathNode;
EFI_DEVICE_PATH_PROTOCOL *TempDevicePathNode;
EFI_STATUS Status;
EFI_HANDLE Handle;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Volume;
EFI_FILE_HANDLE FileHandle;
EFI_FILE_HANDLE LastHandle;
CHAR16 *TempPath;
*ParentFileName = NULL;
//
// Attempt to access the file via a file system interface
//
DevicePathNode = RootDirectory;
Status = gBS->LocateDevicePath (&gEfiSimpleFileSystemProtocolGuid, &DevicePathNode, &Handle);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->HandleProtocol (Handle, &gEfiSimpleFileSystemProtocolGuid, (VOID **)&Volume);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Open the Volume to get the File System handle
//
Status = Volume->OpenVolume (Volume, &FileHandle);
if (EFI_ERROR (Status)) {
return Status;
}
*DeviceHandle = Handle;
if (IsDevicePathEnd (DevicePathNode)) {
*ParentFileName = AllocateCopyPool (StrSize (L"\\"), L"\\");
*RetFileHandle = FileHandle;
return EFI_SUCCESS;
}
//
// Duplicate the device path to avoid the access to unaligned device path node.
// Because the device path consists of one or more FILE PATH MEDIA DEVICE PATH
// nodes, It assures the fields in device path nodes are 2 byte aligned.
//
TempDevicePathNode = DuplicateDevicePath (DevicePathNode);
if (TempDevicePathNode == NULL) {
//
// Setting Status to an EFI_ERROR value will cause the rest of
// the file system support below to be skipped.
//
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
//
// Parse each MEDIA_FILEPATH_DP node. There may be more than one, since the
// directory information and filename can be seperate. The goal is to inch
// our way down each device path node and close the previous node
//
DevicePathNode = TempDevicePathNode;
while (!EFI_ERROR (Status) && !IsDevicePathEnd (DevicePathNode)) {
if ((DevicePathType (DevicePathNode) != MEDIA_DEVICE_PATH) ||
(DevicePathSubType (DevicePathNode) != MEDIA_FILEPATH_DP))
{
Status = EFI_UNSUPPORTED;
goto Done;
}
LastHandle = FileHandle;
FileHandle = NULL;
Status = LastHandle->Open (
LastHandle,
&FileHandle,
((FILEPATH_DEVICE_PATH *)DevicePathNode)->PathName,
EFI_FILE_MODE_READ,
0
);
if (*ParentFileName == NULL) {
*ParentFileName = AllocateCopyPool (StrSize (((FILEPATH_DEVICE_PATH *)DevicePathNode)->PathName), ((FILEPATH_DEVICE_PATH *)DevicePathNode)->PathName);
} else {
TempPath = LibAppendFileName (*ParentFileName, ((FILEPATH_DEVICE_PATH *)DevicePathNode)->PathName);
if (TempPath == NULL) {
LastHandle->Close (LastHandle);
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
FreePool (*ParentFileName);
*ParentFileName = TempPath;
}
//
// Close the previous node
//
LastHandle->Close (LastHandle);
DevicePathNode = NextDevicePathNode (DevicePathNode);
}
if (EFI_ERROR (Status)) {
goto Done;
}
*RetFileHandle = FileHandle;
Status = EFI_SUCCESS;
Done:
if (TempDevicePathNode != NULL) {
FreePool (TempDevicePathNode);
}
if ((FileHandle != NULL) && (EFI_ERROR (Status))) {
FileHandle->Close (FileHandle);
}
return Status;
}
/**
Create a new file or folder in current directory.
@param FileName Point to the fileNmae or folder name.
@param CreateFile CreateFile== TRUE means create a new file.
CreateFile== FALSE means create a new Folder.
**/
EFI_STATUS
LibCreateNewFile (
IN CHAR16 *FileName,
IN BOOLEAN CreateFile
)
{
EFI_FILE_HANDLE FileHandle;
EFI_FILE_HANDLE NewHandle;
EFI_HANDLE DeviceHandle;
EFI_STATUS Status;
CHAR16 *ParentName;
CHAR16 *FullFileName;
NewHandle = NULL;
FullFileName = NULL;
if (EFI_ERROR (LibGetFileHandleFromDevicePath (gFileExplorerPrivate.RetDevicePath, &FileHandle, &ParentName, &DeviceHandle))) {
return EFI_DEVICE_ERROR;
}
FullFileName = LibAppendFileName (ParentName, FileName);
if (FullFileName == NULL) {
return EFI_OUT_OF_RESOURCES;
}
if (CreateFile) {
Status = FileHandle->Open (
FileHandle,
&NewHandle,
FullFileName,
EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE| EFI_FILE_MODE_CREATE,
0
);
if (EFI_ERROR (Status)) {
FileHandle->Close (FileHandle);
return Status;
}
} else {
Status = FileHandle->Open (
FileHandle,
&NewHandle,
FullFileName,
EFI_FILE_MODE_READ | EFI_FILE_MODE_WRITE| EFI_FILE_MODE_CREATE,
EFI_FILE_DIRECTORY
);
if (EFI_ERROR (Status)) {
FileHandle->Close (FileHandle);
return Status;
}
}
FileHandle->Close (FileHandle);
//
// Return the DevicePath of the new created file or folder.
//
gFileExplorerPrivate.RetDevicePath = FileDevicePath (DeviceHandle, FullFileName);
return EFI_SUCCESS;
}
/**
Find files under current directory.
All files and sub-directories in current directory
will be stored in DirectoryMenu for future use.
@param FileHandle Parent file handle.
@param FileName Parent file name.
@param DeviceHandle Driver handle for this partition.
@retval EFI_SUCCESS Get files from current dir successfully.
@return Other value if can't get files from current dir.
**/
EFI_STATUS
LibFindFiles (
IN EFI_FILE_HANDLE FileHandle,
IN UINT16 *FileName,
IN EFI_HANDLE DeviceHandle
)
{
EFI_FILE_INFO *DirInfo;
UINTN BufferSize;
UINTN DirBufferSize;
MENU_ENTRY *NewMenuEntry;
FILE_CONTEXT *NewFileContext;
UINTN Pass;
EFI_STATUS Status;
UINTN OptionNumber;
OptionNumber = 0;
DirBufferSize = sizeof (EFI_FILE_INFO) + 1024;
DirInfo = AllocateZeroPool (DirBufferSize);
if (DirInfo == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Get all files in current directory
// Pass 1 to get Directories
// Pass 2 to get files that are EFI images
//
Status = EFI_SUCCESS;
for (Pass = 1; Pass <= 2; Pass++) {
FileHandle->SetPosition (FileHandle, 0);
for ( ; ;) {
BufferSize = DirBufferSize;
Status = FileHandle->Read (FileHandle, &BufferSize, DirInfo);
if (EFI_ERROR (Status) || (BufferSize == 0)) {
Status = EFI_SUCCESS;
break;
}
if ((((DirInfo->Attribute & EFI_FILE_DIRECTORY) != 0) && (Pass == 2)) ||
(((DirInfo->Attribute & EFI_FILE_DIRECTORY) == 0) && (Pass == 1))
)
{
//
// Pass 1 is for Directories
// Pass 2 is for file names
//
continue;
}
if (!(((DirInfo->Attribute & EFI_FILE_DIRECTORY) != 0) || LibIsSupportedFileType (DirInfo->FileName))) {
//
// Slip file unless it is a directory entry or a .EFI file
//
continue;
}
NewMenuEntry = LibCreateMenuEntry ();
if (NULL == NewMenuEntry) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
NewFileContext = (FILE_CONTEXT *)NewMenuEntry->VariableContext;
NewFileContext->DeviceHandle = DeviceHandle;
NewFileContext->FileName = LibAppendFileName (FileName, DirInfo->FileName);
if (NewFileContext->FileName == NULL) {
LibDestroyMenuEntry (NewMenuEntry);
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
NewFileContext->FileHandle = FileHandle;
NewFileContext->DevicePath = FileDevicePath (NewFileContext->DeviceHandle, NewFileContext->FileName);
NewMenuEntry->HelpString = NULL;
NewFileContext->IsDir = (BOOLEAN)((DirInfo->Attribute & EFI_FILE_DIRECTORY) == EFI_FILE_DIRECTORY);
if (NewFileContext->IsDir) {
BufferSize = StrLen (DirInfo->FileName) * 2 + 6;
NewMenuEntry->DisplayString = AllocateZeroPool (BufferSize);
UnicodeSPrint (
NewMenuEntry->DisplayString,
BufferSize,
L"<%s>",
DirInfo->FileName
);
} else {
NewMenuEntry->DisplayString = LibStrDuplicate (DirInfo->FileName);
}
NewMenuEntry->DisplayStringToken = HiiSetString (
gFileExplorerPrivate.FeHiiHandle,
0,
NewMenuEntry->DisplayString,
NULL
);
NewFileContext->IsRoot = FALSE;
OptionNumber++;
InsertTailList (&gFileExplorerPrivate.FsOptionMenu->Head, &NewMenuEntry->Link);
}
}
gFileExplorerPrivate.FsOptionMenu->MenuNumber = OptionNumber;
Done:
FreePool (DirInfo);
return Status;
}
/**
Refresh the global UpdateData structure.
**/
VOID
LibRefreshUpdateData (
VOID
)
{
//
// Free current updated date
//
if (mLibStartOpCodeHandle != NULL) {
HiiFreeOpCodeHandle (mLibStartOpCodeHandle);
}
if (mLibEndOpCodeHandle != NULL) {
HiiFreeOpCodeHandle (mLibEndOpCodeHandle);
}
//
// Create new OpCode Handle
//
mLibStartOpCodeHandle = HiiAllocateOpCodeHandle ();
mLibEndOpCodeHandle = HiiAllocateOpCodeHandle ();
//
// Create Hii Extend Label OpCode as the start opcode
//
mLibStartLabel = (EFI_IFR_GUID_LABEL *)HiiCreateGuidOpCode (
mLibStartOpCodeHandle,
&gEfiIfrTianoGuid,
NULL,
sizeof (EFI_IFR_GUID_LABEL)
);
mLibStartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
mLibStartLabel->Number = FORM_FILE_EXPLORER_ID;
//
// Create Hii Extend Label OpCode as the start opcode
//
mLibEndLabel = (EFI_IFR_GUID_LABEL *)HiiCreateGuidOpCode (
mLibEndOpCodeHandle,
&gEfiIfrTianoGuid,
NULL,
sizeof (EFI_IFR_GUID_LABEL)
);
mLibEndLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
mLibEndLabel->Number = LABEL_END;
}
/**
Update the File Explore page.
**/
VOID
LibUpdateFileExplorePage (
VOID
)
{
UINTN Index;
MENU_ENTRY *NewMenuEntry;
FILE_CONTEXT *NewFileContext;
MENU_OPTION *MenuOption;
BOOLEAN CreateNewFile;
NewMenuEntry = NULL;
NewFileContext = NULL;
CreateNewFile = FALSE;
LibRefreshUpdateData ();
MenuOption = gFileExplorerPrivate.FsOptionMenu;
mQuestionIdUpdate += QUESTION_ID_UPDATE_STEP;
for (Index = 0; Index < MenuOption->MenuNumber; Index++) {
NewMenuEntry = LibGetMenuEntry (MenuOption, Index);
NewFileContext = (FILE_CONTEXT *)NewMenuEntry->VariableContext;
if (!NewFileContext->IsRoot && !CreateNewFile) {
HiiCreateGotoOpCode (
mLibStartOpCodeHandle,
FORM_ADD_NEW_FILE_ID,
STRING_TOKEN (STR_NEW_FILE),
STRING_TOKEN (STR_NEW_FILE_HELP),
EFI_IFR_FLAG_CALLBACK,
(UINT16)(mNewFileQuestionId++)
);
HiiCreateGotoOpCode (
mLibStartOpCodeHandle,
FORM_ADD_NEW_FOLDER_ID,
STRING_TOKEN (STR_NEW_FOLDER),
STRING_TOKEN (STR_NEW_FOLDER_HELP),
EFI_IFR_FLAG_CALLBACK,
(UINT16)(mNewFolderQuestionId++)
);
HiiCreateTextOpCode (
mLibStartOpCodeHandle,
STRING_TOKEN (STR_NULL_STRING),
STRING_TOKEN (STR_NULL_STRING),
0
);
CreateNewFile = TRUE;
}
if (!NewFileContext->IsDir) {
//
// Create Text opcode for directory, also create Text opcode for file in FileExplorerStateBootFromFile.
//
HiiCreateActionOpCode (
mLibStartOpCodeHandle,
(UINT16)(FILE_OPTION_OFFSET + Index + mQuestionIdUpdate),
NewMenuEntry->DisplayStringToken,
STRING_TOKEN (STR_NULL_STRING),
EFI_IFR_FLAG_CALLBACK,
0
);
} else {
//
// Create Goto opcode for file in FileExplorerStateAddBootOption or FileExplorerStateAddDriverOptionState.
//
HiiCreateGotoOpCode (
mLibStartOpCodeHandle,
FORM_FILE_EXPLORER_ID,
NewMenuEntry->DisplayStringToken,
STRING_TOKEN (STR_NULL_STRING),
EFI_IFR_FLAG_CALLBACK,
(UINT16)(FILE_OPTION_OFFSET + Index + mQuestionIdUpdate)
);
}
}
HiiUpdateForm (
gFileExplorerPrivate.FeHiiHandle,
&FileExplorerGuid,
FORM_FILE_EXPLORER_ID,
mLibStartOpCodeHandle, // Label FORM_FILE_EXPLORER_ID
mLibEndOpCodeHandle // LABEL_END
);
}
/**
Update the file explower page with the refershed file system.
@param KeyValue Key value to identify the type of data to expect.
@retval EFI_SUCCESS Update the file explorer form success.
@retval other errors Error occur when parse one directory.
**/
EFI_STATUS
LibUpdateFileExplorer (
IN UINT16 KeyValue
)
{
UINT16 FileOptionMask;
MENU_ENTRY *NewMenuEntry;
FILE_CONTEXT *NewFileContext;
EFI_STATUS Status;
EFI_FILE_HANDLE FileHandle;
Status = EFI_SUCCESS;
FileOptionMask = (UINT16)(FILE_OPTION_MASK & KeyValue) - mQuestionIdUpdate;
NewMenuEntry = LibGetMenuEntry (gFileExplorerPrivate.FsOptionMenu, FileOptionMask);
NewFileContext = (FILE_CONTEXT *)NewMenuEntry->VariableContext;
if (NewFileContext->IsDir) {
RemoveEntryList (&NewMenuEntry->Link);
LibFreeMenu (gFileExplorerPrivate.FsOptionMenu);
Status = LibGetFileHandleFromMenu (NewMenuEntry, &FileHandle);
if (!EFI_ERROR (Status)) {
Status = LibFindFiles (FileHandle, NewFileContext->FileName, NewFileContext->DeviceHandle);
if (!EFI_ERROR (Status)) {
LibUpdateFileExplorePage ();
} else {
LibFreeMenu (gFileExplorerPrivate.FsOptionMenu);
}
}
LibDestroyMenuEntry (NewMenuEntry);
}
return Status;
}
/**
Get the device path info saved in the menu structure.
@param KeyValue Key value to identify the type of data to expect.
**/
VOID
LibGetDevicePath (
IN UINT16 KeyValue
)
{
UINT16 FileOptionMask;
MENU_ENTRY *NewMenuEntry;
FILE_CONTEXT *NewFileContext;
FileOptionMask = (UINT16)(FILE_OPTION_MASK & KeyValue) - mQuestionIdUpdate;
NewMenuEntry = LibGetMenuEntry (gFileExplorerPrivate.FsOptionMenu, FileOptionMask);
NewFileContext = (FILE_CONTEXT *)NewMenuEntry->VariableContext;
if (gFileExplorerPrivate.RetDevicePath != NULL) {
FreePool (gFileExplorerPrivate.RetDevicePath);
}
gFileExplorerPrivate.RetDevicePath = DuplicateDevicePath (NewFileContext->DevicePath);
}
/**
Choose a file in the specified directory.
If user input NULL for the RootDirectory, will choose file in the system.
If user input *File != NULL, function will return the allocate device path
info for the choosed file, caller has to free the memory after use it.
@param RootDirectory Pointer to the root directory.
@param FileType The file type need to choose.
@param ChooseHandler Function pointer to the extra task need to do
after choose one file.
@param File Return the device path for the last time chosed file.
@retval EFI_SUCESS Choose file success.
@retval EFI_INVALID_PARAMETER Both ChooseHandler and return device path are NULL
One of them must not NULL.
@retval Other errors Choose file failed.
**/
EFI_STATUS
EFIAPI
ChooseFile (
IN EFI_DEVICE_PATH_PROTOCOL *RootDirectory,
IN CHAR16 *FileType OPTIONAL,
IN CHOOSE_HANDLER ChooseHandler OPTIONAL,
OUT EFI_DEVICE_PATH_PROTOCOL **File OPTIONAL
)
{
EFI_FILE_HANDLE FileHandle;
EFI_STATUS Status;
UINT16 *FileName;
EFI_HANDLE DeviceHandle;
if ((ChooseHandler == NULL) && (File == NULL)) {
return EFI_INVALID_PARAMETER;
}
mQuestionIdUpdate = 0;
FileName = NULL;
gFileExplorerPrivate.RetDevicePath = NULL;
gFileExplorerPrivate.ChooseHandler = ChooseHandler;
if (FileType != NULL) {
gFileExplorerPrivate.FileType = AllocateCopyPool (StrSize (FileType), FileType);
ASSERT (gFileExplorerPrivate.FileType != NULL);
LibToLowerString (gFileExplorerPrivate.FileType);
} else {
gFileExplorerPrivate.FileType = NULL;
}
if (RootDirectory == NULL) {
Status = LibFindFileSystem ();
} else {
Status = LibGetFileHandleFromDevicePath (RootDirectory, &FileHandle, &FileName, &DeviceHandle);
if (EFI_ERROR (Status)) {
goto Done;
}
Status = LibFindFiles (FileHandle, FileName, DeviceHandle);
}
if (EFI_ERROR (Status)) {
goto Done;
}
LibUpdateFileExplorePage ();
gFileExplorerPrivate.FormBrowser2->SendForm (
gFileExplorerPrivate.FormBrowser2,
&gFileExplorerPrivate.FeHiiHandle,
1,
&FileExplorerGuid,
0,
NULL,
NULL
);
Done:
if ((Status == EFI_SUCCESS) && (File != NULL)) {
*File = gFileExplorerPrivate.RetDevicePath;
} else if (gFileExplorerPrivate.RetDevicePath != NULL) {
FreePool (gFileExplorerPrivate.RetDevicePath);
}
if (gFileExplorerPrivate.FileType != NULL) {
FreePool (gFileExplorerPrivate.FileType);
}
LibFreeMenu (gFileExplorerPrivate.FsOptionMenu);
if (FileName != NULL) {
FreePool (FileName);
}
return Status;
}
/**
Install Boot Manager Menu driver.
@param ImageHandle The image handle.
@param SystemTable The system table.
@retval EFI_SUCEESS Install File explorer library success.
**/
EFI_STATUS
EFIAPI
FileExplorerLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
gHiiVendorDevicePath = (HII_VENDOR_DEVICE_PATH *)DuplicateDevicePath ((EFI_DEVICE_PATH_PROTOCOL *)&FeHiiVendorDevicePath);
ASSERT (gHiiVendorDevicePath != NULL);
CopyGuid (&gHiiVendorDevicePath->VendorDevicePath.Guid, &gEfiCallerIdGuid);
//
// Install Device Path Protocol and Config Access protocol to driver handle
//
Status = gBS->InstallMultipleProtocolInterfaces (
&gFileExplorerPrivate.FeDriverHandle,
&gEfiDevicePathProtocolGuid,
gHiiVendorDevicePath,
&gEfiHiiConfigAccessProtocolGuid,
&gFileExplorerPrivate.FeConfigAccess,
NULL
);
if (Status == EFI_ALREADY_STARTED) {
return EFI_SUCCESS;
}
if (EFI_ERROR (Status)) {
return Status;
}
//
// Post our File Explorer VFR binary to the HII database.
//
gFileExplorerPrivate.FeHiiHandle = HiiAddPackages (
&FileExplorerGuid,
gFileExplorerPrivate.FeDriverHandle,
FileExplorerVfrBin,
FileExplorerLibStrings,
NULL
);
ASSERT (gFileExplorerPrivate.FeHiiHandle != NULL);
//
// Locate Formbrowser2 protocol
//
Status = gBS->LocateProtocol (&gEfiFormBrowser2ProtocolGuid, NULL, (VOID **)&gFileExplorerPrivate.FormBrowser2);
ASSERT_EFI_ERROR (Status);
InitializeListHead (&gFileExplorerPrivate.FsOptionMenu->Head);
return EFI_SUCCESS;
}
/**
Unloads the application and its installed protocol.
@param[in] ImageHandle Handle that identifies the image to be unloaded.
@param[in] SystemTable The system table.
@retval EFI_SUCCESS The image has been unloaded.
**/
EFI_STATUS
EFIAPI
FileExplorerLibDestructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
ASSERT (gHiiVendorDevicePath != NULL);
if (gFileExplorerPrivate.FeDriverHandle != NULL) {
Status = gBS->UninstallMultipleProtocolInterfaces (
gFileExplorerPrivate.FeDriverHandle,
&gEfiDevicePathProtocolGuid,
gHiiVendorDevicePath,
&gEfiHiiConfigAccessProtocolGuid,
&gFileExplorerPrivate.FeConfigAccess,
NULL
);
ASSERT_EFI_ERROR (Status);
HiiRemovePackages (gFileExplorerPrivate.FeHiiHandle);
gFileExplorerPrivate.FeDriverHandle = NULL;
}
FreePool (gHiiVendorDevicePath);
return EFI_SUCCESS;
}
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