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audk/SecurityPkg/UserIdentification/PwdCredentialProviderDxe/PwdCredentialProvider.c

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/** @file
Password Credential Provider driver implementation.
Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "PwdCredentialProvider.h"
CREDENTIAL_TABLE *mPwdTable = NULL;
PWD_PROVIDER_CALLBACK_INFO *mCallbackInfo = NULL;
PASSWORD_CREDENTIAL_INFO *mPwdInfoHandle = NULL;
HII_VENDOR_DEVICE_PATH mHiiVendorDevicePath = {
{
{
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
{
(UINT8) (sizeof (VENDOR_DEVICE_PATH)),
(UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
}
},
PWD_CREDENTIAL_PROVIDER_GUID
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
(UINT8) (END_DEVICE_PATH_LENGTH),
(UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
}
}
};
EFI_USER_CREDENTIAL_PROTOCOL gPwdCredentialProviderDriver = {
PWD_CREDENTIAL_PROVIDER_GUID,
EFI_USER_CREDENTIAL_CLASS_PASSWORD,
CredentialEnroll,
CredentialForm,
CredentialTile,
CredentialTitle,
CredentialUser,
CredentialSelect,
CredentialDeselect,
CredentialDefault,
CredentialGetInfo,
CredentialGetNextInfo
};
/**
Get string by string id from HII Interface.
@param[in] Id String ID to get the string from.
@retval CHAR16 * String from ID.
@retval NULL If error occurs.
**/
CHAR16 *
GetStringById (
IN EFI_STRING_ID Id
)
{
//
// Get the current string for the current Language.
//
return HiiGetString (mCallbackInfo->HiiHandle, Id, NULL);
}
/**
Expand password table size.
**/
VOID
ExpandTableSize (
VOID
)
{
CREDENTIAL_TABLE *NewTable;
UINTN Count;
Count = mPwdTable->MaxCount + PASSWORD_TABLE_INC;
//
// Create new credential table.
//
NewTable = (CREDENTIAL_TABLE *) AllocateZeroPool (
sizeof (CREDENTIAL_TABLE) +
(Count - 1) * sizeof (PASSWORD_INFO)
);
ASSERT (NewTable != NULL);
NewTable->MaxCount = Count;
NewTable->Count = mPwdTable->Count;
NewTable->ValidIndex = mPwdTable->ValidIndex;
//
// Copy old entries
//
CopyMem (
&NewTable->UserInfo,
&mPwdTable->UserInfo,
mPwdTable->Count * sizeof (PASSWORD_INFO)
);
FreePool (mPwdTable);
mPwdTable = NewTable;
}
/**
Add or delete info in table, and sync with NV variable.
@param[in] Index The index of the password in table. The index begin from 1.
If index is found in table, delete the info, else add the
into to table.
@param[in] Info The new password info to add into table.
@retval EFI_INVALID_PARAMETER Info is NULL when save the info.
@retval EFI_SUCCESS Modify the table successfully.
@retval Others Failed to modify the table.
**/
EFI_STATUS
ModifyTable (
IN UINTN Index,
IN PASSWORD_INFO * Info OPTIONAL
)
{
EFI_STATUS Status;
if (Index < mPwdTable->Count) {
//
// Delete the specified entry.
//
mPwdTable->Count--;
if (Index != mPwdTable->Count) {
CopyMem (
&mPwdTable->UserInfo[Index],
&mPwdTable->UserInfo[mPwdTable->Count],
sizeof (PASSWORD_INFO)
);
}
} else {
//
// Add a new entry.
//
if (Info == NULL) {
return EFI_INVALID_PARAMETER;
}
if (mPwdTable->Count >= mPwdTable->MaxCount) {
ExpandTableSize ();
}
CopyMem (
&mPwdTable->UserInfo[mPwdTable->Count],
Info,
sizeof (PASSWORD_INFO)
);
mPwdTable->Count++;
}
//
// Save the credential table.
//
Status = gRT->SetVariable (
L"PwdCredential",
&gPwdCredentialProviderGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
mPwdTable->Count * sizeof (PASSWORD_INFO),
&mPwdTable->UserInfo
);
return Status;
}
/**
Create a password table.
@retval EFI_SUCCESS Create a password table successfully.
@retval Others Failed to create a password.
**/
EFI_STATUS
InitCredentialTable (
VOID
)
{
EFI_STATUS Status;
UINT8 *Var;
UINTN VarSize;
//
// Get Password credential data from NV variable.
//
VarSize = 0;
Var = NULL;
Status = gRT->GetVariable (
L"PwdCredential",
&gPwdCredentialProviderGuid,
NULL,
&VarSize,
Var
);
if (Status == EFI_BUFFER_TOO_SMALL) {
Var = AllocateZeroPool (VarSize);
if (Var == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Status = gRT->GetVariable (
L"PwdCredential",
&gPwdCredentialProviderGuid,
NULL,
&VarSize,
Var
);
}
if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
return Status;
}
//
// Create the password credential table.
//
mPwdTable = AllocateZeroPool (
sizeof (CREDENTIAL_TABLE) - sizeof (PASSWORD_INFO) +
PASSWORD_TABLE_INC * sizeof (PASSWORD_INFO) +
VarSize
);
if (mPwdTable == NULL) {
FreePool (Var);
return EFI_OUT_OF_RESOURCES;
}
mPwdTable->Count = VarSize / sizeof (PASSWORD_INFO);
mPwdTable->MaxCount = mPwdTable->Count + PASSWORD_TABLE_INC;
mPwdTable->ValidIndex = 0;
if (Var != NULL) {
CopyMem (mPwdTable->UserInfo, Var, VarSize);
FreePool (Var);
}
return EFI_SUCCESS;
}
/**
Hash the password to get credential.
@param[in] Password Points to the input password.
@param[in] PasswordSize The size of password, in bytes.
@param[out] Credential Points to the hashed result.
@retval TRUE Hash the password successfully.
@retval FALSE Failed to hash the password.
**/
BOOLEAN
GenerateCredential (
IN CHAR16 *Password,
IN UINTN PasswordSize,
OUT UINT8 *Credential
)
{
BOOLEAN Status;
UINTN HashSize;
VOID *Hash;
HashSize = Sha1GetContextSize ();
Hash = AllocatePool (HashSize);
ASSERT (Hash != NULL);
Status = Sha1Init (Hash);
if (!Status) {
goto Done;
}
Status = Sha1Update (Hash, Password, PasswordSize);
if (!Status) {
goto Done;
}
Status = Sha1Final (Hash, Credential);
Done:
FreePool (Hash);
return Status;
}
/**
Get password from user input.
@param[in] FirstPwd If True, prompt to input the first password.
If False, prompt to input password again.
@param[out] Credential Points to the input password.
**/
VOID
GetPassword (
IN BOOLEAN FirstPwd,
OUT CHAR8 *Credential
)
{
EFI_INPUT_KEY Key;
CHAR16 PasswordMask[CREDENTIAL_LEN + 1];
CHAR16 Password[CREDENTIAL_LEN];
UINTN PasswordLen;
CHAR16 *QuestionStr;
CHAR16 *LineStr;
PasswordLen = 0;
while (TRUE) {
PasswordMask[PasswordLen] = L'_';
PasswordMask[PasswordLen + 1] = L'\0';
LineStr = GetStringById (STRING_TOKEN (STR_DRAW_A_LINE));
if (FirstPwd) {
QuestionStr = GetStringById (STRING_TOKEN (STR_INPUT_PASSWORD));
} else {
QuestionStr = GetStringById (STRING_TOKEN (STR_INPUT_PASSWORD_AGAIN));
}
CreatePopUp (
EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE,
&Key,
QuestionStr,
LineStr,
PasswordMask,
NULL
);
FreePool (QuestionStr);
FreePool (LineStr);
//
// Check key stroke
//
if (Key.ScanCode == SCAN_NULL) {
if (Key.UnicodeChar == CHAR_CARRIAGE_RETURN) {
break;
} else if (Key.UnicodeChar == CHAR_BACKSPACE) {
if (PasswordLen > 0) {
PasswordLen--;
}
} else if ((Key.UnicodeChar == CHAR_NULL) ||
(Key.UnicodeChar == CHAR_TAB) ||
(Key.UnicodeChar == CHAR_LINEFEED)) {
continue;
} else {
Password[PasswordLen] = Key.UnicodeChar;
PasswordMask[PasswordLen] = L'*';
PasswordLen++;
if (PasswordLen == CREDENTIAL_LEN) {
break;
}
}
}
}
PasswordLen = PasswordLen * sizeof (CHAR16);
GenerateCredential (Password, PasswordLen, (UINT8 *)Credential);
}
/**
Check whether the password can be found on this provider.
@param[in] Password The password to be found.
@retval EFI_SUCCESS Found password sucessfully.
@retval EFI_NOT_FOUND Fail to find the password.
**/
EFI_STATUS
CheckPassword (
IN CHAR8 *Password
)
{
UINTN Index;
CHAR8 *Pwd;
//
// Check password credential.
//
mPwdTable->ValidIndex = 0;
for (Index = 0; Index < mPwdTable->Count; Index++) {
Pwd = mPwdTable->UserInfo[Index].Password;
if (CompareMem (Pwd, Password, CREDENTIAL_LEN) == 0) {
mPwdTable->ValidIndex = Index + 1;
return EFI_SUCCESS;
}
}
return EFI_NOT_FOUND;
}
/**
Find a user infomation record by the information record type.
This function searches all user information records of User from beginning
until either the information is found, or there are no more user infomation
records. A match occurs when a Info.InfoType field matches the user information
record type.
@param[in] User Points to the user profile record to search.
@param[in] InfoType The infomation type to be searched.
@param[out] Info Points to the user info found, the caller is responsible
to free.
@retval EFI_SUCCESS Find the user information successfully.
@retval Others Fail to find the user information.
**/
EFI_STATUS
FindUserInfoByType (
IN EFI_USER_PROFILE_HANDLE User,
IN UINT8 InfoType,
OUT EFI_USER_INFO **Info
)
{
EFI_STATUS Status;
EFI_USER_INFO *UserInfo;
UINTN UserInfoSize;
EFI_USER_INFO_HANDLE UserInfoHandle;
EFI_USER_MANAGER_PROTOCOL *UserManager;
//
// Find user information by information type.
//
if (Info == NULL) {
return EFI_INVALID_PARAMETER;
}
Status = gBS->LocateProtocol (
&gEfiUserManagerProtocolGuid,
NULL,
(VOID **) &UserManager
);
if (EFI_ERROR (Status)) {
return EFI_NOT_FOUND;
}
//
// Get each user information.
//
UserInfoHandle = NULL;
UserInfo = NULL;
UserInfoSize = 0;
while (TRUE) {
Status = UserManager->GetNextInfo (UserManager, User, &UserInfoHandle);
if (EFI_ERROR (Status)) {
break;
}
//
// Get information.
//
Status = UserManager->GetInfo (
UserManager,
User,
UserInfoHandle,
UserInfo,
&UserInfoSize
);
if (Status == EFI_BUFFER_TOO_SMALL) {
if (UserInfo != NULL) {
FreePool (UserInfo);
}
UserInfo = AllocateZeroPool (UserInfoSize);
if (UserInfo == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Status = UserManager->GetInfo (
UserManager,
User,
UserInfoHandle,
UserInfo,
&UserInfoSize
);
}
if (EFI_ERROR (Status)) {
break;
}
ASSERT (UserInfo != NULL);
if (UserInfo->InfoType == InfoType) {
*Info = UserInfo;
return EFI_SUCCESS;
}
}
if (UserInfo != NULL) {
FreePool (UserInfo);
}
return Status;
}
/**
This function processes the results of changes in configuration.
@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 EFI_OUT_OF_RESOURCES Not enough storage is available to hold the
variable and its data.
@retval EFI_DEVICE_ERROR The variable could not be saved.
@retval EFI_UNSUPPORTED The specified Action is not supported by the
callback.
**/
EFI_STATUS
EFIAPI
CredentialDriverCallback (
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;
EFI_INPUT_KEY Key;
CHAR8 Password[CREDENTIAL_LEN];
CHAR16 *PromptStr;
if (Action == EFI_BROWSER_ACTION_CHANGING) {
if (QuestionId == KEY_GET_PASSWORD) {
//
// Get and check password.
//
GetPassword (TRUE, Password);
Status = CheckPassword (Password);
if (EFI_ERROR (Status)) {
PromptStr = GetStringById (STRING_TOKEN (STR_PASSWORD_INCORRECT));
CreatePopUp (
EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE,
&Key,
L"",
PromptStr,
L"",
NULL
);
FreePool (PromptStr);
return Status;
}
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
}
return EFI_SUCCESS;
}
//
// All other action return unsupported.
//
return EFI_UNSUPPORTED;
}
/**
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_SUCCESS The Results is filled with the requested values.
@retval EFI_OUT_OF_RESOURCES Not enough memory to store the results.
@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
FakeExtractConfig (
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_SUCCESS The Results is processed successfully.
@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_NOT_FOUND Routing data doesn't match any storage in this driver.
**/
EFI_STATUS
EFIAPI
FakeRouteConfig (
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;
}
return EFI_NOT_FOUND;
}
/**
This function initialize the data mainly used in form browser.
@retval EFI_SUCCESS Initialize form data successfully.
@retval Others Fail to Initialize form data.
**/
EFI_STATUS
InitFormBrowser (
VOID
)
{
EFI_STATUS Status;
PWD_PROVIDER_CALLBACK_INFO *CallbackInfo;
//
// Initialize driver private data.
//
CallbackInfo = AllocateZeroPool (sizeof (PWD_PROVIDER_CALLBACK_INFO));
if (CallbackInfo == NULL) {
return EFI_OUT_OF_RESOURCES;
}
CallbackInfo->Signature = PWD_PROVIDER_SIGNATURE;
CallbackInfo->ConfigAccess.ExtractConfig = FakeExtractConfig;
CallbackInfo->ConfigAccess.RouteConfig = FakeRouteConfig;
CallbackInfo->ConfigAccess.Callback = CredentialDriverCallback;
CallbackInfo->DriverHandle = NULL;
//
// Install Device Path Protocol and Config Access protocol to driver handle.
//
Status = gBS->InstallMultipleProtocolInterfaces (
&CallbackInfo->DriverHandle,
&gEfiDevicePathProtocolGuid,
&mHiiVendorDevicePath,
&gEfiHiiConfigAccessProtocolGuid,
&CallbackInfo->ConfigAccess,
NULL
);
ASSERT_EFI_ERROR (Status);
//
// Publish HII data.
//
CallbackInfo->HiiHandle = HiiAddPackages (
&gPwdCredentialProviderGuid,
CallbackInfo->DriverHandle,
PwdCredentialProviderStrings,
PwdCredentialProviderVfrBin,
NULL
);
if (CallbackInfo->HiiHandle == NULL) {
return EFI_OUT_OF_RESOURCES;
}
mCallbackInfo = CallbackInfo;
return Status;
}
/**
Enroll a user on a credential provider.
This function enrolls and deletes a user profile using this credential provider.
If a user profile is successfully enrolled, it calls the User Manager Protocol
function Notify() to notify the user manager driver that credential information
has changed. If an enrolled user does exist, delete the user on the credential
provider.
@param[in] This Points to this instance of EFI_USER_CREDENTIAL_PROTOCOL.
@param[in] User The user profile to enroll.
@retval EFI_SUCCESS User profile was successfully enrolled.
@retval EFI_ACCESS_DENIED Current user profile does not permit enrollment on the
user profile handle. Either the user profile cannot enroll
on any user profile or cannot enroll on a user profile
other than the current user profile.
@retval EFI_UNSUPPORTED This credential provider does not support enrollment in
the pre-OS.
@retval EFI_DEVICE_ERROR The new credential could not be created because of a device
error.
@retval EFI_INVALID_PARAMETER User does not refer to a valid user profile handle.
**/
EFI_STATUS
EFIAPI
CredentialEnroll (
IN CONST EFI_USER_CREDENTIAL_PROTOCOL *This,
IN EFI_USER_PROFILE_HANDLE User
)
{
EFI_STATUS Status;
UINTN Index;
PASSWORD_INFO PwdInfo;
EFI_USER_INFO *UserInfo;
CHAR8 Password[CREDENTIAL_LEN];
EFI_INPUT_KEY Key;
EFI_USER_MANAGER_PROTOCOL *UserManager;
UINT8 *UserId;
UINT8 *NewUserId;
CHAR16 *QuestionStr;
CHAR16 *PromptStr;
if ((This == NULL) || (User == NULL)) {
return EFI_INVALID_PARAMETER;
}
Status = gBS->LocateProtocol (
&gEfiUserManagerProtocolGuid,
NULL,
(VOID **) &UserManager
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
//
// Get User Identifier.
//
UserInfo = NULL;
Status = FindUserInfoByType (
User,
EFI_USER_INFO_IDENTIFIER_RECORD,
&UserInfo
);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
//
// If User exists in mPwdTable, delete User.
//
for (Index = 0; Index < mPwdTable->Count; Index++) {
UserId = (UINT8 *) &mPwdTable->UserInfo[Index].UserId;
NewUserId = (UINT8 *) (UserInfo + 1);
if (CompareMem (UserId, NewUserId, sizeof (EFI_USER_INFO_IDENTIFIER)) == 0) {
//
// Delete the existing password.
//
FreePool (UserInfo);
return ModifyTable (Index, NULL);
}
}
//
// The User doesn't exist in mPwdTable; Enroll the new User.
//
while (TRUE) {
//
// Input password.
//
GetPassword (TRUE, PwdInfo.Password);
//
// Input password again.
//
GetPassword (FALSE, Password);
//
// Compare the two password consistency.
//
if (CompareMem (PwdInfo.Password, Password, CREDENTIAL_LEN) == 0) {
break;
}
QuestionStr = GetStringById (STRING_TOKEN (STR_PASSWORD_MISMATCH));
PromptStr = GetStringById (STRING_TOKEN (STR_INPUT_PASSWORD_AGAIN));
CreatePopUp (
EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE,
&Key,
QuestionStr,
L"",
PromptStr,
NULL
);
FreePool (QuestionStr);
FreePool (PromptStr);
}
CopyMem (
PwdInfo.UserId,
(UINT8 *) (UserInfo + 1),
sizeof (EFI_USER_INFO_IDENTIFIER)
);
FreePool (UserInfo);
//
// Save the new added entry.
//
Status = ModifyTable (mPwdTable->Count, &PwdInfo);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Notify the user manager driver that credential information has changed.
//
UserManager->Notify (UserManager, mCallbackInfo->DriverHandle);
return EFI_SUCCESS;
}
/**
Returns the user interface information used during user identification.
This function returns information about the form used when interacting with the
user during user identification. The form is the first enabled form in the form-set
class EFI_HII_USER_CREDENTIAL_FORMSET_GUID installed on the HII handle HiiHandle. If
the user credential provider does not require a form to identify the user, then this
function should return EFI_NOT_FOUND.
@param[in] This Points to this instance of the EFI_USER_CREDENTIAL_PROTOCOL.
@param[out] Hii On return, holds the HII database handle.
@param[out] FormSetId On return, holds the identifier of the form set which contains
the form used during user identification.
@param[out] FormId On return, holds the identifier of the form used during user
identification.
@retval EFI_SUCCESS Form returned successfully.
@retval EFI_NOT_FOUND Form not returned.
@retval EFI_INVALID_PARAMETER Hii is NULL or FormSetId is NULL or FormId is NULL.
**/
EFI_STATUS
EFIAPI
CredentialForm (
IN CONST EFI_USER_CREDENTIAL_PROTOCOL *This,
OUT EFI_HII_HANDLE *Hii,
OUT EFI_GUID *FormSetId,
OUT EFI_FORM_ID *FormId
)
{
if ((This == NULL) || (Hii == NULL) ||
(FormSetId == NULL) || (FormId == NULL)) {
return EFI_INVALID_PARAMETER;
}
*Hii = mCallbackInfo->HiiHandle;
*FormId = FORMID_GET_PASSWORD_FORM;
CopyGuid (FormSetId, &gPwdCredentialProviderGuid);
return EFI_SUCCESS;
}
/**
Returns bitmap used to describe the credential provider type.
This optional function returns a bitmap that is less than or equal to the number
of pixels specified by Width and Height. If no such bitmap exists, then EFI_NOT_FOUND
is returned.
@param[in] This Points to this instance of the EFI_USER_CREDENTIAL_PROTOCOL.
@param[in, out] Width On entry, points to the desired bitmap width. If NULL then no
bitmap information will be returned. On exit, points to the
width of the bitmap returned.
@param[in, out] Height On entry, points to the desired bitmap height. If NULL then no
bitmap information will be returned. On exit, points to the
height of the bitmap returned
@param[out] Hii On return, holds the HII database handle.
@param[out] Image On return, holds the HII image identifier.
@retval EFI_SUCCESS Image identifier returned successfully.
@retval EFI_NOT_FOUND Image identifier not returned.
@retval EFI_INVALID_PARAMETER Hii is NULL or Image is NULL.
**/
EFI_STATUS
EFIAPI
CredentialTile (
IN CONST EFI_USER_CREDENTIAL_PROTOCOL *This,
IN OUT UINTN *Width,
IN OUT UINTN *Height,
OUT EFI_HII_HANDLE *Hii,
OUT EFI_IMAGE_ID *Image
)
{
if ((This == NULL) || (Hii == NULL) || (Image == NULL)) {
return EFI_INVALID_PARAMETER;
}
return EFI_NOT_FOUND;
}
/**
Returns string used to describe the credential provider type.
This function returns a string which describes the credential provider. If no
such string exists, then EFI_NOT_FOUND is returned.
@param[in] This Points to this instance of the EFI_USER_CREDENTIAL_PROTOCOL.
@param[out] Hii On return, holds the HII database handle.
@param[out] String On return, holds the HII string identifier.
@retval EFI_SUCCESS String identifier returned successfully.
@retval EFI_NOT_FOUND String identifier not returned.
@retval EFI_INVALID_PARAMETER Hii is NULL or String is NULL.
**/
EFI_STATUS
EFIAPI
CredentialTitle (
IN CONST EFI_USER_CREDENTIAL_PROTOCOL *This,
OUT EFI_HII_HANDLE *Hii,
OUT EFI_STRING_ID *String
)
{
if ((This == NULL) || (Hii == NULL) || (String == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// Set Hii handle and String ID.
//
*Hii = mCallbackInfo->HiiHandle;
*String = STRING_TOKEN (STR_CREDENTIAL_TITLE);
return EFI_SUCCESS;
}
/**
Return the user identifier associated with the currently authenticated user.
This function returns the user identifier of the user authenticated by this credential
provider. This function is called after the credential-related information has been
submitted on a form, OR after a call to Default() has returned that this credential is
ready to log on.
@param[in] This Points to this instance of the EFI_USER_CREDENTIAL_PROTOCOL.
@param[in] User The user profile handle of the user profile currently being
considered by the user identity manager. If NULL, then no user
profile is currently under consideration.
@param[out] Identifier On return, points to the user identifier.
@retval EFI_SUCCESS User identifier returned successfully.
@retval EFI_NOT_READY No user identifier can be returned.
@retval EFI_ACCESS_DENIED The user has been locked out of this user credential.
@retval EFI_INVALID_PARAMETER This is NULL, or Identifier is NULL.
@retval EFI_NOT_FOUND User is not NULL, and the specified user handle can't be
found in user profile database
**/
EFI_STATUS
EFIAPI
CredentialUser (
IN CONST EFI_USER_CREDENTIAL_PROTOCOL *This,
IN EFI_USER_PROFILE_HANDLE User,
OUT EFI_USER_INFO_IDENTIFIER *Identifier
)
{
EFI_STATUS Status;
UINTN Index;
EFI_USER_INFO *UserInfo;
UINT8 *UserId;
UINT8 *NewUserId;
CHAR8 *Pwd;
CHAR8 *NewPwd;
if ((This == NULL) || (Identifier == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (mPwdTable->ValidIndex == 0) {
//
// No password input, or the input password doesn't match
// anyone in PwdTable.
//
return EFI_NOT_READY;
}
if (User == NULL) {
//
// Return the user ID whose password matches the input password.
//
CopyMem (
Identifier,
&mPwdTable->UserInfo[mPwdTable->ValidIndex - 1].UserId,
sizeof (EFI_USER_INFO_IDENTIFIER)
);
return EFI_SUCCESS;
}
//
// Get the User's ID.
//
Status = FindUserInfoByType (
User,
EFI_USER_INFO_IDENTIFIER_RECORD,
&UserInfo
);
if (EFI_ERROR (Status)) {
return EFI_NOT_FOUND;
}
//
// Check whether the input password matches one in PwdTable.
//
for (Index = 0; Index < mPwdTable->Count; Index++) {
UserId = (UINT8 *) &mPwdTable->UserInfo[Index].UserId;
NewUserId = (UINT8 *) (UserInfo + 1);
if (CompareMem (UserId, NewUserId, sizeof (EFI_USER_INFO_IDENTIFIER)) == 0) {
Pwd = mPwdTable->UserInfo[Index].Password;
NewPwd = mPwdTable->UserInfo[mPwdTable->ValidIndex - 1].Password;
if (CompareMem (Pwd, NewPwd, CREDENTIAL_LEN) == 0) {
CopyMem (Identifier, UserId, sizeof (EFI_USER_INFO_IDENTIFIER));
FreePool (UserInfo);
return EFI_SUCCESS;
}
}
}
FreePool (UserInfo);
return EFI_NOT_READY;
}
/**
Indicate that user interface interaction has begun for the specified credential.
This function is called when a credential provider is selected by the user. If
AutoLogon returns FALSE, then the user interface will be constructed by the User
Identity Manager.
@param[in] This Points to this instance of the EFI_USER_CREDENTIAL_PROTOCOL.
@param[out] AutoLogon On return, points to the credential provider's capabilities
after the credential provider has been selected by the user.
@retval EFI_SUCCESS Credential provider successfully selected.
@retval EFI_INVALID_PARAMETER AutoLogon is NULL.
**/
EFI_STATUS
EFIAPI
CredentialSelect (
IN CONST EFI_USER_CREDENTIAL_PROTOCOL *This,
OUT EFI_CREDENTIAL_LOGON_FLAGS *AutoLogon
)
{
if ((This == NULL) || (AutoLogon == NULL)) {
return EFI_INVALID_PARAMETER;
}
*AutoLogon = 0;
return EFI_SUCCESS;
}
/**
Indicate that user interface interaction has ended for the specified credential.
This function is called when a credential provider is deselected by the user.
@param[in] This Points to this instance of the EFI_USER_CREDENTIAL_PROTOCOL.
@retval EFI_SUCCESS Credential provider successfully deselected.
**/
EFI_STATUS
EFIAPI
CredentialDeselect (
IN CONST EFI_USER_CREDENTIAL_PROTOCOL *This
)
{
if (This == NULL) {
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
/**
Return the default logon behavior for this user credential.
This function reports the default login behavior regarding this credential provider.
@param[in] This Points to this instance of the EFI_USER_CREDENTIAL_PROTOCOL.
@param[out] AutoLogon On return, holds whether the credential provider should be used
by default to automatically log on the user.
@retval EFI_SUCCESS Default information successfully returned.
@retval EFI_INVALID_PARAMETER AutoLogon is NULL.
**/
EFI_STATUS
EFIAPI
CredentialDefault (
IN CONST EFI_USER_CREDENTIAL_PROTOCOL *This,
OUT EFI_CREDENTIAL_LOGON_FLAGS *AutoLogon
)
{
if ((This == NULL) || (AutoLogon == NULL)) {
return EFI_INVALID_PARAMETER;
}
*AutoLogon = 0;
return EFI_SUCCESS;
}
/**
Return information attached to the credential provider.
This function returns user information.
@param[in] This Points to this instance of the EFI_USER_CREDENTIAL_PROTOCOL.
@param[in] UserInfo Handle of the user information data record.
@param[out] Info On entry, points to a buffer of at least *InfoSize bytes. On
exit, holds the user information. If the buffer is too small
to hold the information, then EFI_BUFFER_TOO_SMALL is returned
and InfoSize is updated to contain the number of bytes actually
required.
@param[in, out] InfoSize On entry, points to the size of Info. On return, points to the
size of the user information.
@retval EFI_SUCCESS Information returned successfully.
@retval EFI_BUFFER_TOO_SMALL The size specified by InfoSize is too small to hold all of the
user information. The size required is returned in *InfoSize.
@retval EFI_INVALID_PARAMETER Info is NULL or InfoSize is NULL.
@retval EFI_NOT_FOUND The specified UserInfo does not refer to a valid user info handle.
**/
EFI_STATUS
EFIAPI
CredentialGetInfo (
IN CONST EFI_USER_CREDENTIAL_PROTOCOL *This,
IN EFI_USER_INFO_HANDLE UserInfo,
OUT EFI_USER_INFO *Info,
IN OUT UINTN *InfoSize
)
{
EFI_USER_INFO *CredentialInfo;
UINTN Index;
if ((This == NULL) || (InfoSize == NULL) || (Info == NULL)) {
return EFI_INVALID_PARAMETER;
}
if ((UserInfo == NULL) || (mPwdInfoHandle == NULL)) {
return EFI_NOT_FOUND;
}
//
// Find information handle in credential info table.
//
for (Index = 0; Index < mPwdInfoHandle->Count; Index++) {
CredentialInfo = mPwdInfoHandle->Info[Index];
if (UserInfo == (EFI_USER_INFO_HANDLE)CredentialInfo) {
//
// The handle is found, copy the user info.
//
if (CredentialInfo->InfoSize > *InfoSize) {
*InfoSize = CredentialInfo->InfoSize;
return EFI_BUFFER_TOO_SMALL;
}
CopyMem (Info, CredentialInfo, CredentialInfo->InfoSize);
return EFI_SUCCESS;
}
}
return EFI_NOT_FOUND;
}
/**
Enumerate all of the user informations on the credential provider.
This function returns the next user information record. To retrieve the first user
information record handle, point UserInfo at a NULL. Each subsequent call will retrieve
another user information record handle until there are no more, at which point UserInfo
will point to NULL.
@param[in] This Points to this instance of the EFI_USER_CREDENTIAL_PROTOCOL.
@param[in, out] UserInfo On entry, points to the previous user information handle or NULL
to start enumeration. On exit, points to the next user information
handle or NULL if there is no more user information.
@retval EFI_SUCCESS User information returned.
@retval EFI_NOT_FOUND No more user information found.
@retval EFI_INVALID_PARAMETER UserInfo is NULL.
**/
EFI_STATUS
EFIAPI
CredentialGetNextInfo (
IN CONST EFI_USER_CREDENTIAL_PROTOCOL *This,
IN OUT EFI_USER_INFO_HANDLE *UserInfo
)
{
EFI_USER_INFO *Info;
CHAR16 *ProvNameStr;
UINTN InfoLen;
UINTN Index;
UINTN ProvStrLen;
if ((This == NULL) || (UserInfo == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (mPwdInfoHandle == NULL) {
//
// Initilized user info table. There are 4 user info records in the table.
//
InfoLen = sizeof (PASSWORD_CREDENTIAL_INFO) + (4 - 1) * sizeof (EFI_USER_INFO *);
mPwdInfoHandle = AllocateZeroPool (InfoLen);
if (mPwdInfoHandle == NULL) {
*UserInfo = NULL;
return EFI_NOT_FOUND;
}
//
// The first information, Credential Provider info.
//
InfoLen = sizeof (EFI_USER_INFO) + sizeof (EFI_GUID);
Info = AllocateZeroPool (InfoLen);
ASSERT (Info != NULL);
Info->InfoType = EFI_USER_INFO_CREDENTIAL_PROVIDER_RECORD;
Info->InfoSize = (UINT32) InfoLen;
Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
CopyGuid ((EFI_GUID *)(Info + 1), &gPwdCredentialProviderGuid);
mPwdInfoHandle->Info[0] = Info;
mPwdInfoHandle->Count++;
//
// The second information, Credential Provider name info.
//
ProvNameStr = GetStringById (STRING_TOKEN (STR_PROVIDER_NAME));
ProvStrLen = StrSize (ProvNameStr);
InfoLen = sizeof (EFI_USER_INFO) + ProvStrLen;
Info = AllocateZeroPool (InfoLen);
ASSERT (Info != NULL);
Info->InfoType = EFI_USER_INFO_CREDENTIAL_PROVIDER_NAME_RECORD;
Info->InfoSize = (UINT32) InfoLen;
Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
CopyMem ((UINT8*)(Info + 1), ProvNameStr, ProvStrLen);
FreePool (ProvNameStr);
mPwdInfoHandle->Info[1] = Info;
mPwdInfoHandle->Count++;
//
// The third information, Credential Provider type info.
//
InfoLen = sizeof (EFI_USER_INFO) + sizeof (EFI_GUID);
Info = AllocateZeroPool (InfoLen);
ASSERT (Info != NULL);
Info->InfoType = EFI_USER_INFO_CREDENTIAL_TYPE_RECORD;
Info->InfoSize = (UINT32) InfoLen;
Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
CopyGuid ((EFI_GUID *)(Info + 1), &gEfiUserCredentialClassPasswordGuid);
mPwdInfoHandle->Info[2] = Info;
mPwdInfoHandle->Count++;
//
// The fourth information, Credential Provider type name info.
//
ProvNameStr = GetStringById (STRING_TOKEN (STR_PROVIDER_TYPE_NAME));
ProvStrLen = StrSize (ProvNameStr);
InfoLen = sizeof (EFI_USER_INFO) + ProvStrLen;
Info = AllocateZeroPool (InfoLen);
ASSERT (Info != NULL);
Info->InfoType = EFI_USER_INFO_CREDENTIAL_PROVIDER_NAME_RECORD;
Info->InfoSize = (UINT32) InfoLen;
Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
CopyMem ((UINT8*)(Info + 1), ProvNameStr, ProvStrLen);
FreePool (ProvNameStr);
mPwdInfoHandle->Info[3] = Info;
mPwdInfoHandle->Count++;
}
if (*UserInfo == NULL) {
//
// Return the first info handle.
//
*UserInfo = (EFI_USER_INFO_HANDLE) mPwdInfoHandle->Info[0];
return EFI_SUCCESS;
}
//
// Find information handle in credential info table.
//
for (Index = 0; Index < mPwdInfoHandle->Count; Index++) {
Info = mPwdInfoHandle->Info[Index];
if (*UserInfo == (EFI_USER_INFO_HANDLE)Info) {
//
// The handle is found, get the next one.
//
if (Index == mPwdInfoHandle->Count - 1) {
//
// Already last one.
//
*UserInfo = NULL;
return EFI_NOT_FOUND;
}
Index++;
*UserInfo = (EFI_USER_INFO_HANDLE)mPwdInfoHandle->Info[Index];
return EFI_SUCCESS;
}
}
*UserInfo = NULL;
return EFI_NOT_FOUND;
}
/**
Main entry for this driver.
@param ImageHandle Image handle this driver.
@param SystemTable Pointer to SystemTable.
@retval EFI_SUCESS This function always complete successfully.
**/
EFI_STATUS
EFIAPI
PasswordProviderInit (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
//
// Init credential table.
//
Status = InitCredentialTable ();
if (EFI_ERROR (Status)) {
return Status;
}
//
// Init Form Browser.
//
Status = InitFormBrowser ();
if (EFI_ERROR (Status)) {
return Status;
}
//
// Install protocol interfaces for the password credential provider.
//
Status = gBS->InstallProtocolInterface (
&mCallbackInfo->DriverHandle,
&gEfiUserCredentialProtocolGuid,
EFI_NATIVE_INTERFACE,
&gPwdCredentialProviderDriver
);
return Status;
}
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