This partially restores a hack which causes ES to fake ticket views for
IOS titles.
This is necessary because we still allow users to boot games from the
game list, so, with no way of making sure the required IOSes are
installed beforehand, games may OSPanic() when they try to reload to
some IOS version and just find out that the IOS is not installed
(something which *never* happens on the real console, of course).
A warning is printed in the logs to make sure technical users know the
IOS titles are being faked. To try and keep things accurate in all
other cases, this hack is only active when it is needed (when the
current title is a disc title which was launched from the game list).
Depending upon the desktop colour scheme, the light/dark
GameList backgrounds can cause the always white text
to become unreadble.
Use the common luminance approximation algorithm to
determine whether black text should be used instead.
This adds a hash check for imported contents. IOS does it for security;
we do it for a somewhat different reason, to catch content decryption
bugs before incorrectly decrypted contents get written to the NAND,
which can cause titles to be corrupted.
Either way, we should have been doing this check in all cases.
const, when used on value type parameters in the declaration,
is superfluous. This doesn't really convey any information to take note
of when using the function. This only matters in the definition when you
want to prevent accidental modification.
e.g.
// Header
void CalculateSomething(int lhs, int rhs);
// Definition
void CalculateSomething(const int lhs, const int rhs)
{
// lhs and rhs can't accidentally be modified
}
When the TMD doesn't exist on the NAND, IOS returns -106.
This commit also changes IsValid() to not check for the TMD validity,
since this is not always something we want. (IOS can have different
error codes when the TMD is missing, or even worse, simply assume
that the TMD is valid.)
IOS determines installed titles by looking at /title, not uid.sys,
which is more like a history of installed titles. And it does not care
at all about the installed TMD (or even if it is present at all).
Anthony