IOS/ES: Implement ES_SetUpStreamKey #5575
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BhaaLseN
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Jun 8, 2017
Source/Core/Core/IOS/ES/ES.cpp
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| // Only allow using this function with some titles (WFS titles). | ||
| // The following is the exact check from IOS. Unfortunately, other than knowing that the | ||
| // title type is what IOS checks, we don't know anything about the constants used here. | ||
| if ((!(title_type & 4) && ~(title_type >> 5) & 1) || (title_type & 0x24) == 36) |
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BhaaLseN
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Jun 8, 2017
Source/Core/Core/IOS/IOSC.cpp
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| const u32 mask = m_key_entries[handle].owner_mask | mask_with_current_pid; | ||
| if (mask != mask_with_current_pid) | ||
| return IOSC_EACCES; | ||
| m_key_entries[handle].owner_mask = (new_owner & 0xFFFFFFF8) | mask; |
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This ioctlv is used to get an IOSC decrypt handle for a title. It is known to be used internally by the WFS modules, but it can also be used from the PPC under some conditions. Brings us down to 2 essentially unimplementable ioctlvs (syscalls which seem to return kernel thread priorities...), and 1 known but unimplemented ioctlv (VerifySign).
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This ioctlv is used to get an IOSC decrypt handle for a title. It is known to be used internally by the WFS modules, but it can also be used from the PPC under some conditions.
Some title type constants that are used in IOS are pretty much unknown and not named anywhere (neither in the open sourced IOS source code, nor in IOS, nor in debug messages), unfortunately.
Implementing SetUpStreamKey brings us down to 2 essentially unimplementable ioctlvs (syscalls which seem to return kernel thread priorities...), and 1 known but unimplemented ioctlv (VerifySign).