Update UID drivers to align with latest UEFI spec 2.3.1.
[mirror_edk2.git] / SecurityPkg / UserIdentification / PwdCredentialProviderDxe / PwdCredentialProvider.c
1 /** @file
2 Password Credential Provider driver implementation.
3
4 Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
9
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12
13 **/
14
15 #include "PwdCredentialProvider.h"
16
17 CREDENTIAL_TABLE *mPwdTable = NULL;
18 PWD_PROVIDER_CALLBACK_INFO *mCallbackInfo = NULL;
19 PASSWORD_CREDENTIAL_INFO *mPwdInfoHandle = NULL;
20
21 HII_VENDOR_DEVICE_PATH mHiiVendorDevicePath = {
22 {
23 {
24 HARDWARE_DEVICE_PATH,
25 HW_VENDOR_DP,
26 {
27 (UINT8) (sizeof (VENDOR_DEVICE_PATH)),
28 (UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
29 }
30 },
31 PWD_CREDENTIAL_PROVIDER_GUID
32 },
33 {
34 END_DEVICE_PATH_TYPE,
35 END_ENTIRE_DEVICE_PATH_SUBTYPE,
36 {
37 (UINT8) (END_DEVICE_PATH_LENGTH),
38 (UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
39 }
40 }
41 };
42
43 EFI_USER_CREDENTIAL2_PROTOCOL gPwdCredentialProviderDriver = {
44 PWD_CREDENTIAL_PROVIDER_GUID,
45 EFI_USER_CREDENTIAL_CLASS_PASSWORD,
46 CredentialEnroll,
47 CredentialForm,
48 CredentialTile,
49 CredentialTitle,
50 CredentialUser,
51 CredentialSelect,
52 CredentialDeselect,
53 CredentialDefault,
54 CredentialGetInfo,
55 CredentialGetNextInfo,
56 EFI_CREDENTIAL_CAPABILITIES_ENROLL,
57 CredentialDelete
58 };
59
60
61 /**
62 Get string by string id from HII Interface.
63
64
65 @param[in] Id String ID to get the string from.
66
67 @retval CHAR16 * String from ID.
68 @retval NULL If error occurs.
69
70 **/
71 CHAR16 *
72 GetStringById (
73 IN EFI_STRING_ID Id
74 )
75 {
76 //
77 // Get the current string for the current Language.
78 //
79 return HiiGetString (mCallbackInfo->HiiHandle, Id, NULL);
80 }
81
82
83 /**
84 Expand password table size.
85
86 **/
87 VOID
88 ExpandTableSize (
89 VOID
90 )
91 {
92 CREDENTIAL_TABLE *NewTable;
93 UINTN Count;
94
95 Count = mPwdTable->MaxCount + PASSWORD_TABLE_INC;
96 //
97 // Create new credential table.
98 //
99 NewTable = (CREDENTIAL_TABLE *) AllocateZeroPool (
100 sizeof (CREDENTIAL_TABLE) +
101 (Count - 1) * sizeof (PASSWORD_INFO)
102 );
103 ASSERT (NewTable != NULL);
104
105 NewTable->MaxCount = Count;
106 NewTable->Count = mPwdTable->Count;
107 NewTable->ValidIndex = mPwdTable->ValidIndex;
108 //
109 // Copy old entries
110 //
111 CopyMem (
112 &NewTable->UserInfo,
113 &mPwdTable->UserInfo,
114 mPwdTable->Count * sizeof (PASSWORD_INFO)
115 );
116 FreePool (mPwdTable);
117 mPwdTable = NewTable;
118 }
119
120
121 /**
122 Add, update or delete info in table, and sync with NV variable.
123
124 @param[in] Index The index of the password in table. If index is found in
125 table, update the info, else add the into to table.
126 @param[in] Info The new password info to add into table.If Info is NULL,
127 delete the info by Index.
128
129 @retval EFI_INVALID_PARAMETER Info is NULL when save the info.
130 @retval EFI_SUCCESS Modify the table successfully.
131 @retval Others Failed to modify the table.
132
133 **/
134 EFI_STATUS
135 ModifyTable (
136 IN UINTN Index,
137 IN PASSWORD_INFO * Info OPTIONAL
138 )
139 {
140 EFI_STATUS Status;
141 PASSWORD_INFO *NewPasswordInfo;
142
143 NewPasswordInfo = NULL;
144
145 if (Index < mPwdTable->Count) {
146 if (Info == NULL) {
147 //
148 // Delete the specified entry.
149 //
150 mPwdTable->Count--;
151 if (Index != mPwdTable->Count) {
152 NewPasswordInfo = &mPwdTable->UserInfo[mPwdTable->Count];
153 }
154 } else {
155 //
156 // Update the specified entry.
157 //
158 NewPasswordInfo = Info;
159 }
160 } else {
161 //
162 // Add a new password info.
163 //
164 if (Info == NULL) {
165 return EFI_INVALID_PARAMETER;
166 }
167
168 if (mPwdTable->Count >= mPwdTable->MaxCount) {
169 ExpandTableSize ();
170 }
171
172 NewPasswordInfo = Info;
173 mPwdTable->Count++;
174 }
175
176 if (NewPasswordInfo != NULL) {
177 CopyMem (&mPwdTable->UserInfo[Index], NewPasswordInfo, sizeof (PASSWORD_INFO));
178 }
179
180 //
181 // Save the credential table.
182 //
183 Status = gRT->SetVariable (
184 L"PwdCredential",
185 &gPwdCredentialProviderGuid,
186 EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
187 mPwdTable->Count * sizeof (PASSWORD_INFO),
188 &mPwdTable->UserInfo
189 );
190 return Status;
191 }
192
193
194 /**
195 Create a password table.
196
197 @retval EFI_SUCCESS Create a password table successfully.
198 @retval Others Failed to create a password.
199
200 **/
201 EFI_STATUS
202 InitCredentialTable (
203 VOID
204 )
205 {
206 EFI_STATUS Status;
207 UINT8 *Var;
208 UINTN VarSize;
209
210 //
211 // Get Password credential data from NV variable.
212 //
213 VarSize = 0;
214 Var = NULL;
215 Status = gRT->GetVariable (
216 L"PwdCredential",
217 &gPwdCredentialProviderGuid,
218 NULL,
219 &VarSize,
220 Var
221 );
222 if (Status == EFI_BUFFER_TOO_SMALL) {
223 Var = AllocateZeroPool (VarSize);
224 if (Var == NULL) {
225 return EFI_OUT_OF_RESOURCES;
226 }
227 Status = gRT->GetVariable (
228 L"PwdCredential",
229 &gPwdCredentialProviderGuid,
230 NULL,
231 &VarSize,
232 Var
233 );
234 }
235 if (EFI_ERROR (Status) && (Status != EFI_NOT_FOUND)) {
236 return Status;
237 }
238
239 //
240 // Create the password credential table.
241 //
242 mPwdTable = AllocateZeroPool (
243 sizeof (CREDENTIAL_TABLE) - sizeof (PASSWORD_INFO) +
244 PASSWORD_TABLE_INC * sizeof (PASSWORD_INFO) +
245 VarSize
246 );
247 if (mPwdTable == NULL) {
248 FreePool (Var);
249 return EFI_OUT_OF_RESOURCES;
250 }
251
252 mPwdTable->Count = VarSize / sizeof (PASSWORD_INFO);
253 mPwdTable->MaxCount = mPwdTable->Count + PASSWORD_TABLE_INC;
254 mPwdTable->ValidIndex = 0;
255 if (Var != NULL) {
256 CopyMem (mPwdTable->UserInfo, Var, VarSize);
257 FreePool (Var);
258 }
259 return EFI_SUCCESS;
260 }
261
262
263 /**
264 Hash the password to get credential.
265
266 @param[in] Password Points to the input password.
267 @param[in] PasswordSize The size of password, in bytes.
268 @param[out] Credential Points to the hashed result.
269
270 @retval TRUE Hash the password successfully.
271 @retval FALSE Failed to hash the password.
272
273 **/
274 BOOLEAN
275 GenerateCredential (
276 IN CHAR16 *Password,
277 IN UINTN PasswordSize,
278 OUT UINT8 *Credential
279 )
280 {
281 BOOLEAN Status;
282 UINTN HashSize;
283 VOID *Hash;
284
285 HashSize = Sha1GetContextSize ();
286 Hash = AllocatePool (HashSize);
287 ASSERT (Hash != NULL);
288
289 Status = Sha1Init (Hash);
290 if (!Status) {
291 goto Done;
292 }
293
294 Status = Sha1Update (Hash, Password, PasswordSize);
295 if (!Status) {
296 goto Done;
297 }
298
299 Status = Sha1Final (Hash, Credential);
300
301 Done:
302 FreePool (Hash);
303 return Status;
304 }
305
306
307 /**
308 Get password from user input.
309
310 @param[in] FirstPwd If True, prompt to input the first password.
311 If False, prompt to input password again.
312 @param[out] Credential Points to the input password.
313
314 **/
315 VOID
316 GetPassword (
317 IN BOOLEAN FirstPwd,
318 OUT CHAR8 *Credential
319 )
320 {
321 EFI_INPUT_KEY Key;
322 CHAR16 PasswordMask[CREDENTIAL_LEN + 1];
323 CHAR16 Password[CREDENTIAL_LEN];
324 UINTN PasswordLen;
325 CHAR16 *QuestionStr;
326 CHAR16 *LineStr;
327
328 PasswordLen = 0;
329 while (TRUE) {
330 PasswordMask[PasswordLen] = L'_';
331 PasswordMask[PasswordLen + 1] = L'\0';
332 LineStr = GetStringById (STRING_TOKEN (STR_DRAW_A_LINE));
333 if (FirstPwd) {
334 QuestionStr = GetStringById (STRING_TOKEN (STR_INPUT_PASSWORD));
335 } else {
336 QuestionStr = GetStringById (STRING_TOKEN (STR_INPUT_PASSWORD_AGAIN));
337 }
338 CreatePopUp (
339 EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE,
340 &Key,
341 QuestionStr,
342 LineStr,
343 PasswordMask,
344 NULL
345 );
346 FreePool (QuestionStr);
347 FreePool (LineStr);
348
349 //
350 // Check key stroke
351 //
352 if (Key.ScanCode == SCAN_NULL) {
353 if (Key.UnicodeChar == CHAR_CARRIAGE_RETURN) {
354 break;
355 } else if (Key.UnicodeChar == CHAR_BACKSPACE) {
356 if (PasswordLen > 0) {
357 PasswordLen--;
358 }
359 } else if ((Key.UnicodeChar == CHAR_NULL) ||
360 (Key.UnicodeChar == CHAR_TAB) ||
361 (Key.UnicodeChar == CHAR_LINEFEED)) {
362 continue;
363 } else {
364 Password[PasswordLen] = Key.UnicodeChar;
365 PasswordMask[PasswordLen] = L'*';
366 PasswordLen++;
367 if (PasswordLen == CREDENTIAL_LEN) {
368 break;
369 }
370 }
371 }
372 }
373
374 PasswordLen = PasswordLen * sizeof (CHAR16);
375 GenerateCredential (Password, PasswordLen, (UINT8 *)Credential);
376 }
377
378 /**
379 Check whether the password can be found on this provider.
380
381 @param[in] Password The password to be found.
382
383 @retval EFI_SUCCESS Found password sucessfully.
384 @retval EFI_NOT_FOUND Fail to find the password.
385
386 **/
387 EFI_STATUS
388 CheckPassword (
389 IN CHAR8 *Password
390 )
391 {
392 UINTN Index;
393 CHAR8 *Pwd;
394
395 //
396 // Check password credential.
397 //
398 mPwdTable->ValidIndex = 0;
399 for (Index = 0; Index < mPwdTable->Count; Index++) {
400 Pwd = mPwdTable->UserInfo[Index].Password;
401 if (CompareMem (Pwd, Password, CREDENTIAL_LEN) == 0) {
402 mPwdTable->ValidIndex = Index + 1;
403 return EFI_SUCCESS;
404 }
405 }
406
407 return EFI_NOT_FOUND;
408 }
409
410
411 /**
412 Find a user infomation record by the information record type.
413
414 This function searches all user information records of User from beginning
415 until either the information is found, or there are no more user infomation
416 records. A match occurs when a Info.InfoType field matches the user information
417 record type.
418
419 @param[in] User Points to the user profile record to search.
420 @param[in] InfoType The infomation type to be searched.
421 @param[out] Info Points to the user info found, the caller is responsible
422 to free.
423
424 @retval EFI_SUCCESS Find the user information successfully.
425 @retval Others Fail to find the user information.
426
427 **/
428 EFI_STATUS
429 FindUserInfoByType (
430 IN EFI_USER_PROFILE_HANDLE User,
431 IN UINT8 InfoType,
432 OUT EFI_USER_INFO **Info
433 )
434 {
435 EFI_STATUS Status;
436 EFI_USER_INFO *UserInfo;
437 UINTN UserInfoSize;
438 EFI_USER_INFO_HANDLE UserInfoHandle;
439 EFI_USER_MANAGER_PROTOCOL *UserManager;
440
441 //
442 // Find user information by information type.
443 //
444 if (Info == NULL) {
445 return EFI_INVALID_PARAMETER;
446 }
447
448 Status = gBS->LocateProtocol (
449 &gEfiUserManagerProtocolGuid,
450 NULL,
451 (VOID **) &UserManager
452 );
453 if (EFI_ERROR (Status)) {
454 return EFI_NOT_FOUND;
455 }
456
457 //
458 // Get each user information.
459 //
460
461 UserInfoHandle = NULL;
462 UserInfo = NULL;
463 UserInfoSize = 0;
464 while (TRUE) {
465 Status = UserManager->GetNextInfo (UserManager, User, &UserInfoHandle);
466 if (EFI_ERROR (Status)) {
467 break;
468 }
469 //
470 // Get information.
471 //
472 Status = UserManager->GetInfo (
473 UserManager,
474 User,
475 UserInfoHandle,
476 UserInfo,
477 &UserInfoSize
478 );
479 if (Status == EFI_BUFFER_TOO_SMALL) {
480 if (UserInfo != NULL) {
481 FreePool (UserInfo);
482 }
483 UserInfo = AllocateZeroPool (UserInfoSize);
484 if (UserInfo == NULL) {
485 return EFI_OUT_OF_RESOURCES;
486 }
487 Status = UserManager->GetInfo (
488 UserManager,
489 User,
490 UserInfoHandle,
491 UserInfo,
492 &UserInfoSize
493 );
494 }
495 if (EFI_ERROR (Status)) {
496 break;
497 }
498
499 ASSERT (UserInfo != NULL);
500 if (UserInfo->InfoType == InfoType) {
501 *Info = UserInfo;
502 return EFI_SUCCESS;
503 }
504 }
505
506 if (UserInfo != NULL) {
507 FreePool (UserInfo);
508 }
509 return Status;
510 }
511
512
513 /**
514 This function processes the results of changes in configuration.
515
516 @param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
517 @param Action Specifies the type of action taken by the browser.
518 @param QuestionId A unique value which is sent to the original
519 exporting driver so that it can identify the type
520 of data to expect.
521 @param Type The type of value for the question.
522 @param Value A pointer to the data being sent to the original
523 exporting driver.
524 @param ActionRequest On return, points to the action requested by the
525 callback function.
526
527 @retval EFI_SUCCESS The callback successfully handled the action.
528 @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the
529 variable and its data.
530 @retval EFI_DEVICE_ERROR The variable could not be saved.
531 @retval EFI_UNSUPPORTED The specified Action is not supported by the
532 callback.
533
534 **/
535 EFI_STATUS
536 EFIAPI
537 CredentialDriverCallback (
538 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
539 IN EFI_BROWSER_ACTION Action,
540 IN EFI_QUESTION_ID QuestionId,
541 IN UINT8 Type,
542 IN EFI_IFR_TYPE_VALUE *Value,
543 OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
544 )
545 {
546 EFI_STATUS Status;
547 EFI_INPUT_KEY Key;
548 CHAR8 Password[CREDENTIAL_LEN];
549 CHAR16 *PromptStr;
550
551 if (Action == EFI_BROWSER_ACTION_CHANGING) {
552 if (QuestionId == KEY_GET_PASSWORD) {
553 //
554 // Get and check password.
555 //
556 GetPassword (TRUE, Password);
557 Status = CheckPassword (Password);
558 if (EFI_ERROR (Status)) {
559 PromptStr = GetStringById (STRING_TOKEN (STR_PASSWORD_INCORRECT));
560 CreatePopUp (
561 EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE,
562 &Key,
563 L"",
564 PromptStr,
565 L"",
566 NULL
567 );
568 FreePool (PromptStr);
569 return Status;
570 }
571 *ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
572 }
573 return EFI_SUCCESS;
574 }
575
576 //
577 // All other action return unsupported.
578 //
579 return EFI_UNSUPPORTED;
580 }
581
582
583 /**
584 This function allows a caller to extract the current configuration for one
585 or more named elements from the target driver.
586
587
588 @param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
589 @param Request A null-terminated Unicode string in <ConfigRequest> format.
590 @param Progress On return, points to a character in the Request string.
591 Points to the string's null terminator if request was successful.
592 Points to the most recent '&' before the first failing name/value
593 pair (or the beginning of the string if the failure is in the
594 first name/value pair) if the request was not successful.
595 @param Results A null-terminated Unicode string in <ConfigAltResp> format which
596 has all values filled in for the names in the Request string.
597 String to be allocated by the called function.
598
599 @retval EFI_SUCCESS The Results is filled with the requested values.
600 @retval EFI_OUT_OF_RESOURCES Not enough memory to store the results.
601 @retval EFI_INVALID_PARAMETER Request is illegal syntax, or unknown name.
602 @retval EFI_NOT_FOUND Routing data doesn't match any storage in this driver.
603
604 **/
605 EFI_STATUS
606 EFIAPI
607 FakeExtractConfig (
608 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
609 IN CONST EFI_STRING Request,
610 OUT EFI_STRING *Progress,
611 OUT EFI_STRING *Results
612 )
613 {
614 if (Progress == NULL || Results == NULL) {
615 return EFI_INVALID_PARAMETER;
616 }
617 *Progress = Request;
618 return EFI_NOT_FOUND;
619 }
620
621 /**
622 This function processes the results of changes in configuration.
623
624
625 @param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
626 @param Configuration A null-terminated Unicode string in <ConfigResp> format.
627 @param Progress A pointer to a string filled in with the offset of the most
628 recent '&' before the first failing name/value pair (or the
629 beginning of the string if the failure is in the first
630 name/value pair) or the terminating NULL if all was successful.
631
632 @retval EFI_SUCCESS The Results is processed successfully.
633 @retval EFI_INVALID_PARAMETER Configuration is NULL.
634 @retval EFI_NOT_FOUND Routing data doesn't match any storage in this driver.
635
636 **/
637 EFI_STATUS
638 EFIAPI
639 FakeRouteConfig (
640 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
641 IN CONST EFI_STRING Configuration,
642 OUT EFI_STRING *Progress
643 )
644 {
645 if (Configuration == NULL || Progress == NULL) {
646 return EFI_INVALID_PARAMETER;
647 }
648
649 return EFI_NOT_FOUND;
650 }
651
652 /**
653 This function initialize the data mainly used in form browser.
654
655 @retval EFI_SUCCESS Initialize form data successfully.
656 @retval Others Fail to Initialize form data.
657
658 **/
659 EFI_STATUS
660 InitFormBrowser (
661 VOID
662 )
663 {
664 EFI_STATUS Status;
665 PWD_PROVIDER_CALLBACK_INFO *CallbackInfo;
666
667 //
668 // Initialize driver private data.
669 //
670 CallbackInfo = AllocateZeroPool (sizeof (PWD_PROVIDER_CALLBACK_INFO));
671 if (CallbackInfo == NULL) {
672 return EFI_OUT_OF_RESOURCES;
673 }
674
675 CallbackInfo->Signature = PWD_PROVIDER_SIGNATURE;
676 CallbackInfo->ConfigAccess.ExtractConfig = FakeExtractConfig;
677 CallbackInfo->ConfigAccess.RouteConfig = FakeRouteConfig;
678 CallbackInfo->ConfigAccess.Callback = CredentialDriverCallback;
679 CallbackInfo->DriverHandle = NULL;
680
681 //
682 // Install Device Path Protocol and Config Access protocol to driver handle.
683 //
684 Status = gBS->InstallMultipleProtocolInterfaces (
685 &CallbackInfo->DriverHandle,
686 &gEfiDevicePathProtocolGuid,
687 &mHiiVendorDevicePath,
688 &gEfiHiiConfigAccessProtocolGuid,
689 &CallbackInfo->ConfigAccess,
690 NULL
691 );
692 ASSERT_EFI_ERROR (Status);
693
694 //
695 // Publish HII data.
696 //
697 CallbackInfo->HiiHandle = HiiAddPackages (
698 &gPwdCredentialProviderGuid,
699 CallbackInfo->DriverHandle,
700 PwdCredentialProviderStrings,
701 PwdCredentialProviderVfrBin,
702 NULL
703 );
704 if (CallbackInfo->HiiHandle == NULL) {
705 return EFI_OUT_OF_RESOURCES;
706 }
707 mCallbackInfo = CallbackInfo;
708
709 return Status;
710 }
711
712
713 /**
714 Enroll a user on a credential provider.
715
716 This function enrolls a user on this credential provider. If the user exists on
717 this credential provider, update the user information on this credential provider;
718 otherwise add the user information on credential provider.
719
720 @param[in] This Points to this instance of EFI_USER_CREDENTIAL2_PROTOCOL.
721 @param[in] User The user profile to enroll.
722
723 @retval EFI_SUCCESS User profile was successfully enrolled.
724 @retval EFI_ACCESS_DENIED Current user profile does not permit enrollment on the
725 user profile handle. Either the user profile cannot enroll
726 on any user profile or cannot enroll on a user profile
727 other than the current user profile.
728 @retval EFI_UNSUPPORTED This credential provider does not support enrollment in
729 the pre-OS.
730 @retval EFI_DEVICE_ERROR The new credential could not be created because of a device
731 error.
732 @retval EFI_INVALID_PARAMETER User does not refer to a valid user profile handle.
733
734 **/
735 EFI_STATUS
736 EFIAPI
737 CredentialEnroll (
738 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
739 IN EFI_USER_PROFILE_HANDLE User
740 )
741 {
742 EFI_STATUS Status;
743 UINTN Index;
744 PASSWORD_INFO PwdInfo;
745 EFI_USER_INFO *UserInfo;
746 CHAR8 Password[CREDENTIAL_LEN];
747 EFI_INPUT_KEY Key;
748 EFI_USER_MANAGER_PROTOCOL *UserManager;
749 UINT8 *UserId;
750 CHAR16 *QuestionStr;
751 CHAR16 *PromptStr;
752
753 if ((This == NULL) || (User == NULL)) {
754 return EFI_INVALID_PARAMETER;
755 }
756
757 Status = gBS->LocateProtocol (
758 &gEfiUserManagerProtocolGuid,
759 NULL,
760 (VOID **) &UserManager
761 );
762 if (EFI_ERROR (Status)) {
763 return EFI_UNSUPPORTED;
764 }
765
766 //
767 // Get User Identifier.
768 //
769 UserInfo = NULL;
770 Status = FindUserInfoByType (
771 User,
772 EFI_USER_INFO_IDENTIFIER_RECORD,
773 &UserInfo
774 );
775 if (EFI_ERROR (Status)) {
776 return EFI_INVALID_PARAMETER;
777 }
778
779 CopyMem (PwdInfo.UserId, (UINT8 *) (UserInfo + 1), sizeof (EFI_USER_INFO_IDENTIFIER));
780 FreePool (UserInfo);
781
782 //
783 // Get password from user.
784 //
785 while (TRUE) {
786 //
787 // Input password.
788 //
789 GetPassword (TRUE, PwdInfo.Password);
790
791 //
792 // Input password again.
793 //
794 GetPassword (FALSE, Password);
795
796 //
797 // Compare the two password consistency.
798 //
799 if (CompareMem (PwdInfo.Password, Password, CREDENTIAL_LEN) == 0) {
800 break;
801 }
802
803 QuestionStr = GetStringById (STRING_TOKEN (STR_PASSWORD_MISMATCH));
804 PromptStr = GetStringById (STRING_TOKEN (STR_INPUT_PASSWORD_AGAIN));
805 CreatePopUp (
806 EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE,
807 &Key,
808 QuestionStr,
809 L"",
810 PromptStr,
811 NULL
812 );
813 FreePool (QuestionStr);
814 FreePool (PromptStr);
815 }
816
817 //
818 // Check whether User is ever enrolled in the provider.
819 //
820 for (Index = 0; Index < mPwdTable->Count; Index++) {
821 UserId = (UINT8 *) &mPwdTable->UserInfo[Index].UserId;
822 if (CompareMem (UserId, (UINT8 *) &PwdInfo.UserId, sizeof (EFI_USER_INFO_IDENTIFIER)) == 0) {
823 //
824 // User already exists, update the password.
825 //
826 break;
827 }
828 }
829
830 //
831 // Enroll the User to the provider.
832 //
833 Status = ModifyTable (Index, &PwdInfo);
834 if (EFI_ERROR (Status)) {
835 return Status;
836 }
837
838 //
839 // Notify the user manager driver that credential information has changed.
840 //
841 UserManager->Notify (UserManager, mCallbackInfo->DriverHandle);
842
843 return EFI_SUCCESS;
844 }
845
846
847 /**
848 Returns the user interface information used during user identification.
849
850 This function returns information about the form used when interacting with the
851 user during user identification. The form is the first enabled form in the form-set
852 class EFI_HII_USER_CREDENTIAL_FORMSET_GUID installed on the HII handle HiiHandle. If
853 the user credential provider does not require a form to identify the user, then this
854 function should return EFI_NOT_FOUND.
855
856 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
857 @param[out] Hii On return, holds the HII database handle.
858 @param[out] FormSetId On return, holds the identifier of the form set which contains
859 the form used during user identification.
860 @param[out] FormId On return, holds the identifier of the form used during user
861 identification.
862
863 @retval EFI_SUCCESS Form returned successfully.
864 @retval EFI_NOT_FOUND Form not returned.
865 @retval EFI_INVALID_PARAMETER Hii is NULL or FormSetId is NULL or FormId is NULL.
866
867 **/
868 EFI_STATUS
869 EFIAPI
870 CredentialForm (
871 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
872 OUT EFI_HII_HANDLE *Hii,
873 OUT EFI_GUID *FormSetId,
874 OUT EFI_FORM_ID *FormId
875 )
876 {
877 if ((This == NULL) || (Hii == NULL) ||
878 (FormSetId == NULL) || (FormId == NULL)) {
879 return EFI_INVALID_PARAMETER;
880 }
881
882 *Hii = mCallbackInfo->HiiHandle;
883 *FormId = FORMID_GET_PASSWORD_FORM;
884 CopyGuid (FormSetId, &gPwdCredentialProviderGuid);
885
886 return EFI_SUCCESS;
887 }
888
889
890 /**
891 Returns bitmap used to describe the credential provider type.
892
893 This optional function returns a bitmap that is less than or equal to the number
894 of pixels specified by Width and Height. If no such bitmap exists, then EFI_NOT_FOUND
895 is returned.
896
897 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
898 @param[in, out] Width On entry, points to the desired bitmap width. If NULL then no
899 bitmap information will be returned. On exit, points to the
900 width of the bitmap returned.
901 @param[in, out] Height On entry, points to the desired bitmap height. If NULL then no
902 bitmap information will be returned. On exit, points to the
903 height of the bitmap returned
904 @param[out] Hii On return, holds the HII database handle.
905 @param[out] Image On return, holds the HII image identifier.
906
907 @retval EFI_SUCCESS Image identifier returned successfully.
908 @retval EFI_NOT_FOUND Image identifier not returned.
909 @retval EFI_INVALID_PARAMETER Hii is NULL or Image is NULL.
910
911 **/
912 EFI_STATUS
913 EFIAPI
914 CredentialTile (
915 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
916 IN OUT UINTN *Width,
917 IN OUT UINTN *Height,
918 OUT EFI_HII_HANDLE *Hii,
919 OUT EFI_IMAGE_ID *Image
920 )
921 {
922 if ((This == NULL) || (Hii == NULL) || (Image == NULL)) {
923 return EFI_INVALID_PARAMETER;
924 }
925 return EFI_NOT_FOUND;
926 }
927
928
929 /**
930 Returns string used to describe the credential provider type.
931
932 This function returns a string which describes the credential provider. If no
933 such string exists, then EFI_NOT_FOUND is returned.
934
935 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
936 @param[out] Hii On return, holds the HII database handle.
937 @param[out] String On return, holds the HII string identifier.
938
939 @retval EFI_SUCCESS String identifier returned successfully.
940 @retval EFI_NOT_FOUND String identifier not returned.
941 @retval EFI_INVALID_PARAMETER Hii is NULL or String is NULL.
942
943 **/
944 EFI_STATUS
945 EFIAPI
946 CredentialTitle (
947 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
948 OUT EFI_HII_HANDLE *Hii,
949 OUT EFI_STRING_ID *String
950 )
951 {
952 if ((This == NULL) || (Hii == NULL) || (String == NULL)) {
953 return EFI_INVALID_PARAMETER;
954 }
955
956 //
957 // Set Hii handle and String ID.
958 //
959 *Hii = mCallbackInfo->HiiHandle;
960 *String = STRING_TOKEN (STR_CREDENTIAL_TITLE);
961
962 return EFI_SUCCESS;
963 }
964
965
966 /**
967 Return the user identifier associated with the currently authenticated user.
968
969 This function returns the user identifier of the user authenticated by this credential
970 provider. This function is called after the credential-related information has been
971 submitted on a form, OR after a call to Default() has returned that this credential is
972 ready to log on.
973
974 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
975 @param[in] User The user profile handle of the user profile currently being
976 considered by the user identity manager. If NULL, then no user
977 profile is currently under consideration.
978 @param[out] Identifier On return, points to the user identifier.
979
980 @retval EFI_SUCCESS User identifier returned successfully.
981 @retval EFI_NOT_READY No user identifier can be returned.
982 @retval EFI_ACCESS_DENIED The user has been locked out of this user credential.
983 @retval EFI_INVALID_PARAMETER This is NULL, or Identifier is NULL.
984 @retval EFI_NOT_FOUND User is not NULL, and the specified user handle can't be
985 found in user profile database
986
987 **/
988 EFI_STATUS
989 EFIAPI
990 CredentialUser (
991 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
992 IN EFI_USER_PROFILE_HANDLE User,
993 OUT EFI_USER_INFO_IDENTIFIER *Identifier
994 )
995 {
996 EFI_STATUS Status;
997 UINTN Index;
998 EFI_USER_INFO *UserInfo;
999 UINT8 *UserId;
1000 UINT8 *NewUserId;
1001 CHAR8 *Pwd;
1002 CHAR8 *NewPwd;
1003
1004 if ((This == NULL) || (Identifier == NULL)) {
1005 return EFI_INVALID_PARAMETER;
1006 }
1007
1008 if (mPwdTable->ValidIndex == 0) {
1009 //
1010 // No password input, or the input password doesn't match
1011 // anyone in PwdTable.
1012 //
1013 return EFI_NOT_READY;
1014 }
1015
1016 if (User == NULL) {
1017 //
1018 // Return the user ID whose password matches the input password.
1019 //
1020 CopyMem (
1021 Identifier,
1022 &mPwdTable->UserInfo[mPwdTable->ValidIndex - 1].UserId,
1023 sizeof (EFI_USER_INFO_IDENTIFIER)
1024 );
1025 return EFI_SUCCESS;
1026 }
1027
1028 //
1029 // Get the User's ID.
1030 //
1031 Status = FindUserInfoByType (
1032 User,
1033 EFI_USER_INFO_IDENTIFIER_RECORD,
1034 &UserInfo
1035 );
1036 if (EFI_ERROR (Status)) {
1037 return EFI_NOT_FOUND;
1038 }
1039
1040 //
1041 // Check whether the input password matches one in PwdTable.
1042 //
1043 for (Index = 0; Index < mPwdTable->Count; Index++) {
1044 UserId = (UINT8 *) &mPwdTable->UserInfo[Index].UserId;
1045 NewUserId = (UINT8 *) (UserInfo + 1);
1046 if (CompareMem (UserId, NewUserId, sizeof (EFI_USER_INFO_IDENTIFIER)) == 0) {
1047 Pwd = mPwdTable->UserInfo[Index].Password;
1048 NewPwd = mPwdTable->UserInfo[mPwdTable->ValidIndex - 1].Password;
1049 if (CompareMem (Pwd, NewPwd, CREDENTIAL_LEN) == 0) {
1050 CopyMem (Identifier, UserId, sizeof (EFI_USER_INFO_IDENTIFIER));
1051 FreePool (UserInfo);
1052 return EFI_SUCCESS;
1053 }
1054 }
1055 }
1056
1057 FreePool (UserInfo);
1058 return EFI_NOT_READY;
1059 }
1060
1061
1062 /**
1063 Indicate that user interface interaction has begun for the specified credential.
1064
1065 This function is called when a credential provider is selected by the user. If
1066 AutoLogon returns FALSE, then the user interface will be constructed by the User
1067 Identity Manager.
1068
1069 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1070 @param[out] AutoLogon On return, points to the credential provider's capabilities
1071 after the credential provider has been selected by the user.
1072
1073 @retval EFI_SUCCESS Credential provider successfully selected.
1074 @retval EFI_INVALID_PARAMETER AutoLogon is NULL.
1075
1076 **/
1077 EFI_STATUS
1078 EFIAPI
1079 CredentialSelect (
1080 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
1081 OUT EFI_CREDENTIAL_LOGON_FLAGS *AutoLogon
1082 )
1083 {
1084 if ((This == NULL) || (AutoLogon == NULL)) {
1085 return EFI_INVALID_PARAMETER;
1086 }
1087 *AutoLogon = 0;
1088
1089 return EFI_SUCCESS;
1090 }
1091
1092
1093 /**
1094 Indicate that user interface interaction has ended for the specified credential.
1095
1096 This function is called when a credential provider is deselected by the user.
1097
1098 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1099
1100 @retval EFI_SUCCESS Credential provider successfully deselected.
1101
1102 **/
1103 EFI_STATUS
1104 EFIAPI
1105 CredentialDeselect (
1106 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This
1107 )
1108 {
1109 if (This == NULL) {
1110 return EFI_INVALID_PARAMETER;
1111 }
1112 return EFI_SUCCESS;
1113 }
1114
1115
1116 /**
1117 Return the default logon behavior for this user credential.
1118
1119 This function reports the default login behavior regarding this credential provider.
1120
1121 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1122 @param[out] AutoLogon On return, holds whether the credential provider should be used
1123 by default to automatically log on the user.
1124
1125 @retval EFI_SUCCESS Default information successfully returned.
1126 @retval EFI_INVALID_PARAMETER AutoLogon is NULL.
1127
1128 **/
1129 EFI_STATUS
1130 EFIAPI
1131 CredentialDefault (
1132 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
1133 OUT EFI_CREDENTIAL_LOGON_FLAGS *AutoLogon
1134 )
1135 {
1136 if ((This == NULL) || (AutoLogon == NULL)) {
1137 return EFI_INVALID_PARAMETER;
1138 }
1139 *AutoLogon = 0;
1140
1141 return EFI_SUCCESS;
1142 }
1143
1144
1145 /**
1146 Return information attached to the credential provider.
1147
1148 This function returns user information.
1149
1150 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1151 @param[in] UserInfo Handle of the user information data record.
1152 @param[out] Info On entry, points to a buffer of at least *InfoSize bytes. On
1153 exit, holds the user information. If the buffer is too small
1154 to hold the information, then EFI_BUFFER_TOO_SMALL is returned
1155 and InfoSize is updated to contain the number of bytes actually
1156 required.
1157 @param[in, out] InfoSize On entry, points to the size of Info. On return, points to the
1158 size of the user information.
1159
1160 @retval EFI_SUCCESS Information returned successfully.
1161 @retval EFI_BUFFER_TOO_SMALL The size specified by InfoSize is too small to hold all of the
1162 user information. The size required is returned in *InfoSize.
1163 @retval EFI_INVALID_PARAMETER Info is NULL or InfoSize is NULL.
1164 @retval EFI_NOT_FOUND The specified UserInfo does not refer to a valid user info handle.
1165
1166 **/
1167 EFI_STATUS
1168 EFIAPI
1169 CredentialGetInfo (
1170 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
1171 IN EFI_USER_INFO_HANDLE UserInfo,
1172 OUT EFI_USER_INFO *Info,
1173 IN OUT UINTN *InfoSize
1174 )
1175 {
1176 EFI_USER_INFO *CredentialInfo;
1177 UINTN Index;
1178
1179 if ((This == NULL) || (InfoSize == NULL) || (Info == NULL)) {
1180 return EFI_INVALID_PARAMETER;
1181 }
1182
1183 if ((UserInfo == NULL) || (mPwdInfoHandle == NULL)) {
1184 return EFI_NOT_FOUND;
1185 }
1186
1187 //
1188 // Find information handle in credential info table.
1189 //
1190 for (Index = 0; Index < mPwdInfoHandle->Count; Index++) {
1191 CredentialInfo = mPwdInfoHandle->Info[Index];
1192 if (UserInfo == (EFI_USER_INFO_HANDLE)CredentialInfo) {
1193 //
1194 // The handle is found, copy the user info.
1195 //
1196 if (CredentialInfo->InfoSize > *InfoSize) {
1197 *InfoSize = CredentialInfo->InfoSize;
1198 return EFI_BUFFER_TOO_SMALL;
1199 }
1200 CopyMem (Info, CredentialInfo, CredentialInfo->InfoSize);
1201 return EFI_SUCCESS;
1202 }
1203 }
1204
1205 return EFI_NOT_FOUND;
1206 }
1207
1208
1209 /**
1210 Enumerate all of the user informations on the credential provider.
1211
1212 This function returns the next user information record. To retrieve the first user
1213 information record handle, point UserInfo at a NULL. Each subsequent call will retrieve
1214 another user information record handle until there are no more, at which point UserInfo
1215 will point to NULL.
1216
1217 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1218 @param[in, out] UserInfo On entry, points to the previous user information handle or NULL
1219 to start enumeration. On exit, points to the next user information
1220 handle or NULL if there is no more user information.
1221
1222 @retval EFI_SUCCESS User information returned.
1223 @retval EFI_NOT_FOUND No more user information found.
1224 @retval EFI_INVALID_PARAMETER UserInfo is NULL.
1225
1226 **/
1227 EFI_STATUS
1228 EFIAPI
1229 CredentialGetNextInfo (
1230 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
1231 IN OUT EFI_USER_INFO_HANDLE *UserInfo
1232 )
1233 {
1234 EFI_USER_INFO *Info;
1235 CHAR16 *ProvNameStr;
1236 UINTN InfoLen;
1237 UINTN Index;
1238 UINTN ProvStrLen;
1239
1240 if ((This == NULL) || (UserInfo == NULL)) {
1241 return EFI_INVALID_PARAMETER;
1242 }
1243
1244 if (mPwdInfoHandle == NULL) {
1245 //
1246 // Initilized user info table. There are 4 user info records in the table.
1247 //
1248 InfoLen = sizeof (PASSWORD_CREDENTIAL_INFO) + (4 - 1) * sizeof (EFI_USER_INFO *);
1249 mPwdInfoHandle = AllocateZeroPool (InfoLen);
1250 if (mPwdInfoHandle == NULL) {
1251 *UserInfo = NULL;
1252 return EFI_NOT_FOUND;
1253 }
1254
1255 //
1256 // The first information, Credential Provider info.
1257 //
1258 InfoLen = sizeof (EFI_USER_INFO) + sizeof (EFI_GUID);
1259 Info = AllocateZeroPool (InfoLen);
1260 ASSERT (Info != NULL);
1261
1262 Info->InfoType = EFI_USER_INFO_CREDENTIAL_PROVIDER_RECORD;
1263 Info->InfoSize = (UINT32) InfoLen;
1264 Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
1265 CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
1266 CopyGuid ((EFI_GUID *)(Info + 1), &gPwdCredentialProviderGuid);
1267
1268 mPwdInfoHandle->Info[0] = Info;
1269 mPwdInfoHandle->Count++;
1270
1271 //
1272 // The second information, Credential Provider name info.
1273 //
1274 ProvNameStr = GetStringById (STRING_TOKEN (STR_PROVIDER_NAME));
1275 ProvStrLen = StrSize (ProvNameStr);
1276 InfoLen = sizeof (EFI_USER_INFO) + ProvStrLen;
1277 Info = AllocateZeroPool (InfoLen);
1278 ASSERT (Info != NULL);
1279
1280 Info->InfoType = EFI_USER_INFO_CREDENTIAL_PROVIDER_NAME_RECORD;
1281 Info->InfoSize = (UINT32) InfoLen;
1282 Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
1283 CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
1284 CopyMem ((UINT8*)(Info + 1), ProvNameStr, ProvStrLen);
1285 FreePool (ProvNameStr);
1286
1287 mPwdInfoHandle->Info[1] = Info;
1288 mPwdInfoHandle->Count++;
1289
1290 //
1291 // The third information, Credential Provider type info.
1292 //
1293 InfoLen = sizeof (EFI_USER_INFO) + sizeof (EFI_GUID);
1294 Info = AllocateZeroPool (InfoLen);
1295 ASSERT (Info != NULL);
1296
1297 Info->InfoType = EFI_USER_INFO_CREDENTIAL_TYPE_RECORD;
1298 Info->InfoSize = (UINT32) InfoLen;
1299 Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
1300 CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
1301 CopyGuid ((EFI_GUID *)(Info + 1), &gEfiUserCredentialClassPasswordGuid);
1302
1303 mPwdInfoHandle->Info[2] = Info;
1304 mPwdInfoHandle->Count++;
1305
1306 //
1307 // The fourth information, Credential Provider type name info.
1308 //
1309 ProvNameStr = GetStringById (STRING_TOKEN (STR_PROVIDER_TYPE_NAME));
1310 ProvStrLen = StrSize (ProvNameStr);
1311 InfoLen = sizeof (EFI_USER_INFO) + ProvStrLen;
1312 Info = AllocateZeroPool (InfoLen);
1313 ASSERT (Info != NULL);
1314
1315 Info->InfoType = EFI_USER_INFO_CREDENTIAL_PROVIDER_NAME_RECORD;
1316 Info->InfoSize = (UINT32) InfoLen;
1317 Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
1318 CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
1319 CopyMem ((UINT8*)(Info + 1), ProvNameStr, ProvStrLen);
1320 FreePool (ProvNameStr);
1321
1322 mPwdInfoHandle->Info[3] = Info;
1323 mPwdInfoHandle->Count++;
1324 }
1325
1326 if (*UserInfo == NULL) {
1327 //
1328 // Return the first info handle.
1329 //
1330 *UserInfo = (EFI_USER_INFO_HANDLE) mPwdInfoHandle->Info[0];
1331 return EFI_SUCCESS;
1332 }
1333
1334 //
1335 // Find information handle in credential info table.
1336 //
1337 for (Index = 0; Index < mPwdInfoHandle->Count; Index++) {
1338 Info = mPwdInfoHandle->Info[Index];
1339 if (*UserInfo == (EFI_USER_INFO_HANDLE)Info) {
1340 //
1341 // The handle is found, get the next one.
1342 //
1343 if (Index == mPwdInfoHandle->Count - 1) {
1344 //
1345 // Already last one.
1346 //
1347 *UserInfo = NULL;
1348 return EFI_NOT_FOUND;
1349 }
1350
1351 Index++;
1352 *UserInfo = (EFI_USER_INFO_HANDLE)mPwdInfoHandle->Info[Index];
1353 return EFI_SUCCESS;
1354 }
1355 }
1356
1357 *UserInfo = NULL;
1358 return EFI_NOT_FOUND;
1359 }
1360
1361 /**
1362 Delete a user on this credential provider.
1363
1364 This function deletes a user on this credential provider.
1365
1366 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1367 @param[in] User The user profile handle to delete.
1368
1369 @retval EFI_SUCCESS User profile was successfully deleted.
1370 @retval EFI_ACCESS_DENIED Current user profile does not permit deletion on the user profile handle.
1371 Either the user profile cannot delete on any user profile or cannot delete
1372 on a user profile other than the current user profile.
1373 @retval EFI_UNSUPPORTED This credential provider does not support deletion in the pre-OS.
1374 @retval EFI_DEVICE_ERROR The new credential could not be deleted because of a device error.
1375 @retval EFI_INVALID_PARAMETER User does not refer to a valid user profile handle.
1376 **/
1377 EFI_STATUS
1378 EFIAPI
1379 CredentialDelete (
1380 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
1381 IN EFI_USER_PROFILE_HANDLE User
1382 )
1383 {
1384 EFI_STATUS Status;
1385 EFI_USER_INFO *UserInfo;
1386 UINT8 *UserId;
1387 UINT8 *NewUserId;
1388 UINTN Index;
1389
1390 if ((This == NULL) || (User == NULL)) {
1391 return EFI_INVALID_PARAMETER;
1392 }
1393
1394 //
1395 // Get User Identifier.
1396 //
1397 UserInfo = NULL;
1398 Status = FindUserInfoByType (
1399 User,
1400 EFI_USER_INFO_IDENTIFIER_RECORD,
1401 &UserInfo
1402 );
1403 if (EFI_ERROR (Status)) {
1404 return EFI_INVALID_PARAMETER;
1405 }
1406
1407 //
1408 // Find the user by user identifier in mPwdTable.
1409 //
1410 for (Index = 0; Index < mPwdTable->Count; Index++) {
1411 UserId = (UINT8 *) &mPwdTable->UserInfo[Index].UserId;
1412 NewUserId = (UINT8 *) (UserInfo + 1);
1413 if (CompareMem (UserId, NewUserId, sizeof (EFI_USER_INFO_IDENTIFIER)) == 0) {
1414 //
1415 // Found the user, delete it.
1416 //
1417 ModifyTable (Index, NULL);
1418 break;
1419 }
1420 }
1421
1422 FreePool (UserInfo);
1423 return EFI_SUCCESS;
1424 }
1425
1426
1427 /**
1428 Main entry for this driver.
1429
1430 @param ImageHandle Image handle this driver.
1431 @param SystemTable Pointer to SystemTable.
1432
1433 @retval EFI_SUCESS This function always complete successfully.
1434
1435 **/
1436 EFI_STATUS
1437 EFIAPI
1438 PasswordProviderInit (
1439 IN EFI_HANDLE ImageHandle,
1440 IN EFI_SYSTEM_TABLE *SystemTable
1441 )
1442 {
1443 EFI_STATUS Status;
1444
1445 //
1446 // Init credential table.
1447 //
1448 Status = InitCredentialTable ();
1449 if (EFI_ERROR (Status)) {
1450 return Status;
1451 }
1452
1453 //
1454 // Init Form Browser.
1455 //
1456 Status = InitFormBrowser ();
1457 if (EFI_ERROR (Status)) {
1458 return Status;
1459 }
1460
1461 //
1462 // Install protocol interfaces for the password credential provider.
1463 //
1464 Status = gBS->InstallProtocolInterface (
1465 &mCallbackInfo->DriverHandle,
1466 &gEfiUserCredential2ProtocolGuid,
1467 EFI_NATIVE_INTERFACE,
1468 &gPwdCredentialProviderDriver
1469 );
1470 return Status;
1471 }