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ilikesn0w
commented
Nov 5, 2026
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| Status = gBS->LocateHandleBuffer (ByProtocol, &gAppleFirmwarePasswordProtocolGuid, NULL, &HandleCount, &HandleBuffer); | ||
| if (!EFI_ERROR (Status) && (HandleCount != 0) && (HandleBuffer != NULL)) { | ||
| for (Index = 0; Index < HandleCount; Index++) { | ||
| FwPass = NULL; | ||
| Status = OcHandleProtocolFallback (HandleBuffer[Index], &gAppleFirmwarePasswordProtocolGuid, (VOID **)&FwPass); | ||
| if (!EFI_ERROR (Status) && (FwPass != NULL) && (FwPass->Signature == APPLE_FIRMWARE_PASSWORD_PROTOCOL_SIGNATURE)) { | ||
| FreePool (HandleBuffer); | ||
| return FwPass; | ||
| } | ||
| } | ||
|
|
||
| FreePool (HandleBuffer); | ||
| } |
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Apple does it like this:
Status = gBS->LocateHandleBuffer(
SearchType: ByProtocol,
Protocol: &APPLE_FIRMWARE_PASSWORD_PROTOCOL_GUID,
SearchKey: nullptr,
NoHandles,
&Buffer);
if ( (Status & 0x8000000000000000uLL) == 0LL )
{
if ( NoHandles[0] != 0 )
{
v4 = 0;
while ( 1 )
{
Status = gBS->HandleProtocol(
Handle: Buffer[v4],
Protocol: &APPLE_FIRMWARE_PASSWORD_PROTOCOL_GUID,
Interface: (void **)&AppleFirmwarePasswordProtocol);
if ( (Status & 0x8000000000000000uLL) == 0LL && AppleFirmwarePasswordProtocol->Signature == 0x4457535341505746LL )
break;
if ( ++v4 >= NoHandles[0] )
goto LABEL_9;
}
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Some corrections to AppleFirmwarePassword protocol reverse. I think it's OK if OcAppleFirmwarePasswordLib reports that there is no password in the system since we don't use it anyway.