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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_CHANGED) {
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 UINT8 *UserId;
749 CHAR16 *QuestionStr;
750 CHAR16 *PromptStr;
751
752 if ((This == NULL) || (User == NULL)) {
753 return EFI_INVALID_PARAMETER;
754 }
755
756 //
757 // Get User Identifier.
758 //
759 UserInfo = NULL;
760 Status = FindUserInfoByType (
761 User,
762 EFI_USER_INFO_IDENTIFIER_RECORD,
763 &UserInfo
764 );
765 if (EFI_ERROR (Status)) {
766 return EFI_INVALID_PARAMETER;
767 }
768
769 CopyMem (PwdInfo.UserId, (UINT8 *) (UserInfo + 1), sizeof (EFI_USER_INFO_IDENTIFIER));
770 FreePool (UserInfo);
771
772 //
773 // Get password from user.
774 //
775 while (TRUE) {
776 //
777 // Input password.
778 //
779 GetPassword (TRUE, PwdInfo.Password);
780
781 //
782 // Input password again.
783 //
784 GetPassword (FALSE, Password);
785
786 //
787 // Compare the two password consistency.
788 //
789 if (CompareMem (PwdInfo.Password, Password, CREDENTIAL_LEN) == 0) {
790 break;
791 }
792
793 QuestionStr = GetStringById (STRING_TOKEN (STR_PASSWORD_MISMATCH));
794 PromptStr = GetStringById (STRING_TOKEN (STR_INPUT_PASSWORD_AGAIN));
795 CreatePopUp (
796 EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE,
797 &Key,
798 QuestionStr,
799 L"",
800 PromptStr,
801 NULL
802 );
803 FreePool (QuestionStr);
804 FreePool (PromptStr);
805 }
806
807 //
808 // Check whether User is ever enrolled in the provider.
809 //
810 for (Index = 0; Index < mPwdTable->Count; Index++) {
811 UserId = (UINT8 *) &mPwdTable->UserInfo[Index].UserId;
812 if (CompareMem (UserId, (UINT8 *) &PwdInfo.UserId, sizeof (EFI_USER_INFO_IDENTIFIER)) == 0) {
813 //
814 // User already exists, update the password.
815 //
816 break;
817 }
818 }
819
820 //
821 // Enroll the User to the provider.
822 //
823 Status = ModifyTable (Index, &PwdInfo);
824 if (EFI_ERROR (Status)) {
825 return Status;
826 }
827
828 return EFI_SUCCESS;
829 }
830
831
832 /**
833 Returns the user interface information used during user identification.
834
835 This function returns information about the form used when interacting with the
836 user during user identification. The form is the first enabled form in the form-set
837 class EFI_HII_USER_CREDENTIAL_FORMSET_GUID installed on the HII handle HiiHandle. If
838 the user credential provider does not require a form to identify the user, then this
839 function should return EFI_NOT_FOUND.
840
841 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
842 @param[out] Hii On return, holds the HII database handle.
843 @param[out] FormSetId On return, holds the identifier of the form set which contains
844 the form used during user identification.
845 @param[out] FormId On return, holds the identifier of the form used during user
846 identification.
847
848 @retval EFI_SUCCESS Form returned successfully.
849 @retval EFI_NOT_FOUND Form not returned.
850 @retval EFI_INVALID_PARAMETER Hii is NULL or FormSetId is NULL or FormId is NULL.
851
852 **/
853 EFI_STATUS
854 EFIAPI
855 CredentialForm (
856 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
857 OUT EFI_HII_HANDLE *Hii,
858 OUT EFI_GUID *FormSetId,
859 OUT EFI_FORM_ID *FormId
860 )
861 {
862 if ((This == NULL) || (Hii == NULL) ||
863 (FormSetId == NULL) || (FormId == NULL)) {
864 return EFI_INVALID_PARAMETER;
865 }
866
867 *Hii = mCallbackInfo->HiiHandle;
868 *FormId = FORMID_GET_PASSWORD_FORM;
869 CopyGuid (FormSetId, &gPwdCredentialProviderGuid);
870
871 return EFI_SUCCESS;
872 }
873
874
875 /**
876 Returns bitmap used to describe the credential provider type.
877
878 This optional function returns a bitmap that is less than or equal to the number
879 of pixels specified by Width and Height. If no such bitmap exists, then EFI_NOT_FOUND
880 is returned.
881
882 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
883 @param[in, out] Width On entry, points to the desired bitmap width. If NULL then no
884 bitmap information will be returned. On exit, points to the
885 width of the bitmap returned.
886 @param[in, out] Height On entry, points to the desired bitmap height. If NULL then no
887 bitmap information will be returned. On exit, points to the
888 height of the bitmap returned
889 @param[out] Hii On return, holds the HII database handle.
890 @param[out] Image On return, holds the HII image identifier.
891
892 @retval EFI_SUCCESS Image identifier returned successfully.
893 @retval EFI_NOT_FOUND Image identifier not returned.
894 @retval EFI_INVALID_PARAMETER Hii is NULL or Image is NULL.
895
896 **/
897 EFI_STATUS
898 EFIAPI
899 CredentialTile (
900 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
901 IN OUT UINTN *Width,
902 IN OUT UINTN *Height,
903 OUT EFI_HII_HANDLE *Hii,
904 OUT EFI_IMAGE_ID *Image
905 )
906 {
907 if ((This == NULL) || (Hii == NULL) || (Image == NULL)) {
908 return EFI_INVALID_PARAMETER;
909 }
910 return EFI_NOT_FOUND;
911 }
912
913
914 /**
915 Returns string used to describe the credential provider type.
916
917 This function returns a string which describes the credential provider. If no
918 such string exists, then EFI_NOT_FOUND is returned.
919
920 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
921 @param[out] Hii On return, holds the HII database handle.
922 @param[out] String On return, holds the HII string identifier.
923
924 @retval EFI_SUCCESS String identifier returned successfully.
925 @retval EFI_NOT_FOUND String identifier not returned.
926 @retval EFI_INVALID_PARAMETER Hii is NULL or String is NULL.
927
928 **/
929 EFI_STATUS
930 EFIAPI
931 CredentialTitle (
932 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
933 OUT EFI_HII_HANDLE *Hii,
934 OUT EFI_STRING_ID *String
935 )
936 {
937 if ((This == NULL) || (Hii == NULL) || (String == NULL)) {
938 return EFI_INVALID_PARAMETER;
939 }
940
941 //
942 // Set Hii handle and String ID.
943 //
944 *Hii = mCallbackInfo->HiiHandle;
945 *String = STRING_TOKEN (STR_CREDENTIAL_TITLE);
946
947 return EFI_SUCCESS;
948 }
949
950
951 /**
952 Return the user identifier associated with the currently authenticated user.
953
954 This function returns the user identifier of the user authenticated by this credential
955 provider. This function is called after the credential-related information has been
956 submitted on a form, OR after a call to Default() has returned that this credential is
957 ready to log on.
958
959 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
960 @param[in] User The user profile handle of the user profile currently being
961 considered by the user identity manager. If NULL, then no user
962 profile is currently under consideration.
963 @param[out] Identifier On return, points to the user identifier.
964
965 @retval EFI_SUCCESS User identifier returned successfully.
966 @retval EFI_NOT_READY No user identifier can be returned.
967 @retval EFI_ACCESS_DENIED The user has been locked out of this user credential.
968 @retval EFI_INVALID_PARAMETER This is NULL, or Identifier is NULL.
969 @retval EFI_NOT_FOUND User is not NULL, and the specified user handle can't be
970 found in user profile database
971
972 **/
973 EFI_STATUS
974 EFIAPI
975 CredentialUser (
976 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
977 IN EFI_USER_PROFILE_HANDLE User,
978 OUT EFI_USER_INFO_IDENTIFIER *Identifier
979 )
980 {
981 EFI_STATUS Status;
982 UINTN Index;
983 EFI_USER_INFO *UserInfo;
984 UINT8 *UserId;
985 UINT8 *NewUserId;
986 CHAR8 *Pwd;
987 CHAR8 *NewPwd;
988
989 if ((This == NULL) || (Identifier == NULL)) {
990 return EFI_INVALID_PARAMETER;
991 }
992
993 if (mPwdTable->ValidIndex == 0) {
994 //
995 // No password input, or the input password doesn't match
996 // anyone in PwdTable.
997 //
998 return EFI_NOT_READY;
999 }
1000
1001 if (User == NULL) {
1002 //
1003 // Return the user ID whose password matches the input password.
1004 //
1005 CopyMem (
1006 Identifier,
1007 &mPwdTable->UserInfo[mPwdTable->ValidIndex - 1].UserId,
1008 sizeof (EFI_USER_INFO_IDENTIFIER)
1009 );
1010 return EFI_SUCCESS;
1011 }
1012
1013 //
1014 // Get the User's ID.
1015 //
1016 Status = FindUserInfoByType (
1017 User,
1018 EFI_USER_INFO_IDENTIFIER_RECORD,
1019 &UserInfo
1020 );
1021 if (EFI_ERROR (Status)) {
1022 return EFI_NOT_FOUND;
1023 }
1024
1025 //
1026 // Check whether the input password matches one in PwdTable.
1027 //
1028 for (Index = 0; Index < mPwdTable->Count; Index++) {
1029 UserId = (UINT8 *) &mPwdTable->UserInfo[Index].UserId;
1030 NewUserId = (UINT8 *) (UserInfo + 1);
1031 if (CompareMem (UserId, NewUserId, sizeof (EFI_USER_INFO_IDENTIFIER)) == 0) {
1032 Pwd = mPwdTable->UserInfo[Index].Password;
1033 NewPwd = mPwdTable->UserInfo[mPwdTable->ValidIndex - 1].Password;
1034 if (CompareMem (Pwd, NewPwd, CREDENTIAL_LEN) == 0) {
1035 CopyMem (Identifier, UserId, sizeof (EFI_USER_INFO_IDENTIFIER));
1036 FreePool (UserInfo);
1037 return EFI_SUCCESS;
1038 }
1039 }
1040 }
1041
1042 FreePool (UserInfo);
1043 return EFI_NOT_READY;
1044 }
1045
1046
1047 /**
1048 Indicate that user interface interaction has begun for the specified credential.
1049
1050 This function is called when a credential provider is selected by the user. If
1051 AutoLogon returns FALSE, then the user interface will be constructed by the User
1052 Identity Manager.
1053
1054 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1055 @param[out] AutoLogon On return, points to the credential provider's capabilities
1056 after the credential provider has been selected by the user.
1057
1058 @retval EFI_SUCCESS Credential provider successfully selected.
1059 @retval EFI_INVALID_PARAMETER AutoLogon is NULL.
1060
1061 **/
1062 EFI_STATUS
1063 EFIAPI
1064 CredentialSelect (
1065 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
1066 OUT EFI_CREDENTIAL_LOGON_FLAGS *AutoLogon
1067 )
1068 {
1069 if ((This == NULL) || (AutoLogon == NULL)) {
1070 return EFI_INVALID_PARAMETER;
1071 }
1072 *AutoLogon = 0;
1073
1074 return EFI_SUCCESS;
1075 }
1076
1077
1078 /**
1079 Indicate that user interface interaction has ended for the specified credential.
1080
1081 This function is called when a credential provider is deselected by the user.
1082
1083 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1084
1085 @retval EFI_SUCCESS Credential provider successfully deselected.
1086
1087 **/
1088 EFI_STATUS
1089 EFIAPI
1090 CredentialDeselect (
1091 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This
1092 )
1093 {
1094 if (This == NULL) {
1095 return EFI_INVALID_PARAMETER;
1096 }
1097 return EFI_SUCCESS;
1098 }
1099
1100
1101 /**
1102 Return the default logon behavior for this user credential.
1103
1104 This function reports the default login behavior regarding this credential provider.
1105
1106 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1107 @param[out] AutoLogon On return, holds whether the credential provider should be used
1108 by default to automatically log on the user.
1109
1110 @retval EFI_SUCCESS Default information successfully returned.
1111 @retval EFI_INVALID_PARAMETER AutoLogon is NULL.
1112
1113 **/
1114 EFI_STATUS
1115 EFIAPI
1116 CredentialDefault (
1117 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
1118 OUT EFI_CREDENTIAL_LOGON_FLAGS *AutoLogon
1119 )
1120 {
1121 if ((This == NULL) || (AutoLogon == NULL)) {
1122 return EFI_INVALID_PARAMETER;
1123 }
1124 *AutoLogon = 0;
1125
1126 return EFI_SUCCESS;
1127 }
1128
1129
1130 /**
1131 Return information attached to the credential provider.
1132
1133 This function returns user information.
1134
1135 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1136 @param[in] UserInfo Handle of the user information data record.
1137 @param[out] Info On entry, points to a buffer of at least *InfoSize bytes. On
1138 exit, holds the user information. If the buffer is too small
1139 to hold the information, then EFI_BUFFER_TOO_SMALL is returned
1140 and InfoSize is updated to contain the number of bytes actually
1141 required.
1142 @param[in, out] InfoSize On entry, points to the size of Info. On return, points to the
1143 size of the user information.
1144
1145 @retval EFI_SUCCESS Information returned successfully.
1146 @retval EFI_BUFFER_TOO_SMALL The size specified by InfoSize is too small to hold all of the
1147 user information. The size required is returned in *InfoSize.
1148 @retval EFI_INVALID_PARAMETER Info is NULL or InfoSize is NULL.
1149 @retval EFI_NOT_FOUND The specified UserInfo does not refer to a valid user info handle.
1150
1151 **/
1152 EFI_STATUS
1153 EFIAPI
1154 CredentialGetInfo (
1155 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
1156 IN EFI_USER_INFO_HANDLE UserInfo,
1157 OUT EFI_USER_INFO *Info,
1158 IN OUT UINTN *InfoSize
1159 )
1160 {
1161 EFI_USER_INFO *CredentialInfo;
1162 UINTN Index;
1163
1164 if ((This == NULL) || (InfoSize == NULL) || (Info == NULL)) {
1165 return EFI_INVALID_PARAMETER;
1166 }
1167
1168 if ((UserInfo == NULL) || (mPwdInfoHandle == NULL)) {
1169 return EFI_NOT_FOUND;
1170 }
1171
1172 //
1173 // Find information handle in credential info table.
1174 //
1175 for (Index = 0; Index < mPwdInfoHandle->Count; Index++) {
1176 CredentialInfo = mPwdInfoHandle->Info[Index];
1177 if (UserInfo == (EFI_USER_INFO_HANDLE)CredentialInfo) {
1178 //
1179 // The handle is found, copy the user info.
1180 //
1181 if (CredentialInfo->InfoSize > *InfoSize) {
1182 *InfoSize = CredentialInfo->InfoSize;
1183 return EFI_BUFFER_TOO_SMALL;
1184 }
1185 CopyMem (Info, CredentialInfo, CredentialInfo->InfoSize);
1186 return EFI_SUCCESS;
1187 }
1188 }
1189
1190 return EFI_NOT_FOUND;
1191 }
1192
1193
1194 /**
1195 Enumerate all of the user informations on the credential provider.
1196
1197 This function returns the next user information record. To retrieve the first user
1198 information record handle, point UserInfo at a NULL. Each subsequent call will retrieve
1199 another user information record handle until there are no more, at which point UserInfo
1200 will point to NULL.
1201
1202 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1203 @param[in, out] UserInfo On entry, points to the previous user information handle or NULL
1204 to start enumeration. On exit, points to the next user information
1205 handle or NULL if there is no more user information.
1206
1207 @retval EFI_SUCCESS User information returned.
1208 @retval EFI_NOT_FOUND No more user information found.
1209 @retval EFI_INVALID_PARAMETER UserInfo is NULL.
1210
1211 **/
1212 EFI_STATUS
1213 EFIAPI
1214 CredentialGetNextInfo (
1215 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
1216 IN OUT EFI_USER_INFO_HANDLE *UserInfo
1217 )
1218 {
1219 EFI_USER_INFO *Info;
1220 CHAR16 *ProvNameStr;
1221 UINTN InfoLen;
1222 UINTN Index;
1223 UINTN ProvStrLen;
1224
1225 if ((This == NULL) || (UserInfo == NULL)) {
1226 return EFI_INVALID_PARAMETER;
1227 }
1228
1229 if (mPwdInfoHandle == NULL) {
1230 //
1231 // Initilized user info table. There are 4 user info records in the table.
1232 //
1233 InfoLen = sizeof (PASSWORD_CREDENTIAL_INFO) + (4 - 1) * sizeof (EFI_USER_INFO *);
1234 mPwdInfoHandle = AllocateZeroPool (InfoLen);
1235 if (mPwdInfoHandle == NULL) {
1236 *UserInfo = NULL;
1237 return EFI_NOT_FOUND;
1238 }
1239
1240 //
1241 // The first information, Credential Provider info.
1242 //
1243 InfoLen = sizeof (EFI_USER_INFO) + sizeof (EFI_GUID);
1244 Info = AllocateZeroPool (InfoLen);
1245 ASSERT (Info != NULL);
1246
1247 Info->InfoType = EFI_USER_INFO_CREDENTIAL_PROVIDER_RECORD;
1248 Info->InfoSize = (UINT32) InfoLen;
1249 Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
1250 CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
1251 CopyGuid ((EFI_GUID *)(Info + 1), &gPwdCredentialProviderGuid);
1252
1253 mPwdInfoHandle->Info[0] = Info;
1254 mPwdInfoHandle->Count++;
1255
1256 //
1257 // The second information, Credential Provider name info.
1258 //
1259 ProvNameStr = GetStringById (STRING_TOKEN (STR_PROVIDER_NAME));
1260 ProvStrLen = StrSize (ProvNameStr);
1261 InfoLen = sizeof (EFI_USER_INFO) + ProvStrLen;
1262 Info = AllocateZeroPool (InfoLen);
1263 ASSERT (Info != NULL);
1264
1265 Info->InfoType = EFI_USER_INFO_CREDENTIAL_PROVIDER_NAME_RECORD;
1266 Info->InfoSize = (UINT32) InfoLen;
1267 Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
1268 CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
1269 CopyMem ((UINT8*)(Info + 1), ProvNameStr, ProvStrLen);
1270 FreePool (ProvNameStr);
1271
1272 mPwdInfoHandle->Info[1] = Info;
1273 mPwdInfoHandle->Count++;
1274
1275 //
1276 // The third information, Credential Provider type info.
1277 //
1278 InfoLen = sizeof (EFI_USER_INFO) + sizeof (EFI_GUID);
1279 Info = AllocateZeroPool (InfoLen);
1280 ASSERT (Info != NULL);
1281
1282 Info->InfoType = EFI_USER_INFO_CREDENTIAL_TYPE_RECORD;
1283 Info->InfoSize = (UINT32) InfoLen;
1284 Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
1285 CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
1286 CopyGuid ((EFI_GUID *)(Info + 1), &gEfiUserCredentialClassPasswordGuid);
1287
1288 mPwdInfoHandle->Info[2] = Info;
1289 mPwdInfoHandle->Count++;
1290
1291 //
1292 // The fourth information, Credential Provider type name info.
1293 //
1294 ProvNameStr = GetStringById (STRING_TOKEN (STR_PROVIDER_TYPE_NAME));
1295 ProvStrLen = StrSize (ProvNameStr);
1296 InfoLen = sizeof (EFI_USER_INFO) + ProvStrLen;
1297 Info = AllocateZeroPool (InfoLen);
1298 ASSERT (Info != NULL);
1299
1300 Info->InfoType = EFI_USER_INFO_CREDENTIAL_PROVIDER_NAME_RECORD;
1301 Info->InfoSize = (UINT32) InfoLen;
1302 Info->InfoAttribs = EFI_USER_INFO_PROTECTED;
1303 CopyGuid (&Info->Credential, &gPwdCredentialProviderGuid);
1304 CopyMem ((UINT8*)(Info + 1), ProvNameStr, ProvStrLen);
1305 FreePool (ProvNameStr);
1306
1307 mPwdInfoHandle->Info[3] = Info;
1308 mPwdInfoHandle->Count++;
1309 }
1310
1311 if (*UserInfo == NULL) {
1312 //
1313 // Return the first info handle.
1314 //
1315 *UserInfo = (EFI_USER_INFO_HANDLE) mPwdInfoHandle->Info[0];
1316 return EFI_SUCCESS;
1317 }
1318
1319 //
1320 // Find information handle in credential info table.
1321 //
1322 for (Index = 0; Index < mPwdInfoHandle->Count; Index++) {
1323 Info = mPwdInfoHandle->Info[Index];
1324 if (*UserInfo == (EFI_USER_INFO_HANDLE)Info) {
1325 //
1326 // The handle is found, get the next one.
1327 //
1328 if (Index == mPwdInfoHandle->Count - 1) {
1329 //
1330 // Already last one.
1331 //
1332 *UserInfo = NULL;
1333 return EFI_NOT_FOUND;
1334 }
1335
1336 Index++;
1337 *UserInfo = (EFI_USER_INFO_HANDLE)mPwdInfoHandle->Info[Index];
1338 return EFI_SUCCESS;
1339 }
1340 }
1341
1342 *UserInfo = NULL;
1343 return EFI_NOT_FOUND;
1344 }
1345
1346 /**
1347 Delete a user on this credential provider.
1348
1349 This function deletes a user on this credential provider.
1350
1351 @param[in] This Points to this instance of the EFI_USER_CREDENTIAL2_PROTOCOL.
1352 @param[in] User The user profile handle to delete.
1353
1354 @retval EFI_SUCCESS User profile was successfully deleted.
1355 @retval EFI_ACCESS_DENIED Current user profile does not permit deletion on the user profile handle.
1356 Either the user profile cannot delete on any user profile or cannot delete
1357 on a user profile other than the current user profile.
1358 @retval EFI_UNSUPPORTED This credential provider does not support deletion in the pre-OS.
1359 @retval EFI_DEVICE_ERROR The new credential could not be deleted because of a device error.
1360 @retval EFI_INVALID_PARAMETER User does not refer to a valid user profile handle.
1361 **/
1362 EFI_STATUS
1363 EFIAPI
1364 CredentialDelete (
1365 IN CONST EFI_USER_CREDENTIAL2_PROTOCOL *This,
1366 IN EFI_USER_PROFILE_HANDLE User
1367 )
1368 {
1369 EFI_STATUS Status;
1370 EFI_USER_INFO *UserInfo;
1371 UINT8 *UserId;
1372 UINT8 *NewUserId;
1373 UINTN Index;
1374
1375 if ((This == NULL) || (User == NULL)) {
1376 return EFI_INVALID_PARAMETER;
1377 }
1378
1379 //
1380 // Get User Identifier.
1381 //
1382 UserInfo = NULL;
1383 Status = FindUserInfoByType (
1384 User,
1385 EFI_USER_INFO_IDENTIFIER_RECORD,
1386 &UserInfo
1387 );
1388 if (EFI_ERROR (Status)) {
1389 return EFI_INVALID_PARAMETER;
1390 }
1391
1392 //
1393 // Find the user by user identifier in mPwdTable.
1394 //
1395 for (Index = 0; Index < mPwdTable->Count; Index++) {
1396 UserId = (UINT8 *) &mPwdTable->UserInfo[Index].UserId;
1397 NewUserId = (UINT8 *) (UserInfo + 1);
1398 if (CompareMem (UserId, NewUserId, sizeof (EFI_USER_INFO_IDENTIFIER)) == 0) {
1399 //
1400 // Found the user, delete it.
1401 //
1402 ModifyTable (Index, NULL);
1403 break;
1404 }
1405 }
1406
1407 FreePool (UserInfo);
1408 return EFI_SUCCESS;
1409 }
1410
1411
1412 /**
1413 Main entry for this driver.
1414
1415 @param ImageHandle Image handle this driver.
1416 @param SystemTable Pointer to SystemTable.
1417
1418 @retval EFI_SUCESS This function always complete successfully.
1419
1420 **/
1421 EFI_STATUS
1422 EFIAPI
1423 PasswordProviderInit (
1424 IN EFI_HANDLE ImageHandle,
1425 IN EFI_SYSTEM_TABLE *SystemTable
1426 )
1427 {
1428 EFI_STATUS Status;
1429
1430 //
1431 // Init credential table.
1432 //
1433 Status = InitCredentialTable ();
1434 if (EFI_ERROR (Status)) {
1435 return Status;
1436 }
1437
1438 //
1439 // Init Form Browser.
1440 //
1441 Status = InitFormBrowser ();
1442 if (EFI_ERROR (Status)) {
1443 return Status;
1444 }
1445
1446 //
1447 // Install protocol interfaces for the password credential provider.
1448 //
1449 Status = gBS->InstallProtocolInterface (
1450 &mCallbackInfo->DriverHandle,
1451 &gEfiUserCredential2ProtocolGuid,
1452 EFI_NATIVE_INTERFACE,
1453 &gPwdCredentialProviderDriver
1454 );
1455 return Status;
1456 }
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