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93 lines
4.3 KiB
C++
93 lines
4.3 KiB
C++
#ifndef BLOCKS0TO7_H
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#define BLOCKS0TO7_H
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#include "includes.h"
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//for now im creating this class to handle getting info about the first 8 blocks of nand
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//im not sure what all it should be doing, so it may become a clusterfuck
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//for now, just pass it a list of 8 bytearrays, each 0x20000 bytes. then check IsOk(), and then you can check boot1version and Boot2Infos()
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//! currently it checks the hash of boot1 block against known versions, checks blocks 1-7 for valid blockmaps,
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//! looks for copies of boot2 in those blocks, then finds the tmd, ticket and encrypted data. next it checks that
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//! the tid in the tmd&ticket is correct, and verifies all the signatures and decrypts the actual content and checks its hash
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//! finally it looks at the most recent valid blockmap and determines which copy would be used when booting & when booting from backup
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//! Because it does all this, the first time requesting this data will cause the current thread to hang
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//! ( checking the signatures takes the longest ) after the first time, the list returned by Boot2Infos() is remembered
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//! and it will be returned any time after that when this function is called
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enum //returned by Boot1Version(). theres no official names for these, so ill just stick with lettering them
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{
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BOOT_1_UNK = 0,
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BOOT_1_A,
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BOOT_1_B,
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BOOT_1_C,
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BOOT_1_D
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};
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#define BOOTMII_UNK 0x2110
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#define BOOTMII_11 0x2111
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#define BOOTMII_13 0x2113
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//TODO: what other versions of bootmii are there?
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//enum used to convey the state of each copy of boot2 on a nand
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enum
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{
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BOOT_2_ERROR_PARSING = -3, //error parsing the thing, cant really tell more info, since it wasnt parsed :P
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BOOT_2_BAD_SIGNATURE = -2, //RSA signature of boot2 doesnt pass memcmp or strncmp
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BOOT_2_ERROR = -1, //some other error
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BOOT_2_BAD_CONTENT_HASH = 1, //sha1 of the content did not match what was in the TMD
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BOOT_2_TMD_FAKESIGNED = 2, //tmd RSA seems fine, it passed strncmp but not memcmp ( probably bootmii )
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BOOT_2_TMD_SIG_OK = 4, //tmd RSA seems fine, signature passed memcmp ( probably official shit )
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BOOT_2_TIK_FAKESIGNED = 8, //tik RSA seems fine, it passed strncmp but not memcmp - not really sure why this would happen
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BOOT_2_TIK_SIG_OK = 0x10, //tik RSA seems fine, signature passed memcmp
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BOOT_2_MARKED_BAD = 0x20, //the most recent blockmap says this copy of boot2 falls on bad blocks
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BOOT_2_USED_TO_BOOT = 0x40, //this is the copy used when trying to boot the wii
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BOOT_2_BACKUP_COPY = 0x80 //this is the copy used when the first copy failed to boot
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};
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struct Boot2Info //this little guy is just some container to hold the information about the state of boot2 in these blocks
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{ //the above values are used for the "state". it will either be < 0 or it will be any of the other values |'d together
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//if the state is above 0, version will either be the version from the TMD or one of the BOOTMII_... values
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quint8 firstBlock; //block that contains the header
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quint8 secondBlock; //block that contains the blockmap
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quint32 generation; //generation of the blockmap
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quint8 blockMap[ 8 ]; //blockmap found on secondBlock ( only the first 8 blocks, as the rest belong to the encrypted FS )
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qint32 state; //information about this copy of boot2
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quint16 version; //whatversion of boot2 this is
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};
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class Blocks0to7
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{
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public:
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Blocks0to7( const QList<QByteArray> &blocks = QList<QByteArray>() );
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bool SetBlocks( const QList<QByteArray> &blocks );
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bool IsOk(){ return _ok; }
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//check which version of boot1 we have
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quint8 Boot1Version();
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//get a list containing info for each copy of boot2 on the given blocks
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const QList<Boot2Info> &Boot2Infos();
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private:
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bool _ok;
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//should hold the blocks, without ecc
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QList<QByteArray>blocks;
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//after the first time Boot2Infos() is called, store the result here so any subsequent calls can just return this for speed
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QList< Boot2Info > boot2Infos;
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//this one doesnt really return a complete info, it only gets the block map from a block
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//and returns it in an incomplete Boot2Info
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Boot2Info GetBlockMap( const QByteArray &block );
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//checks the hashes and whatnot in a copy of boot2
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//returns an incomplete Boot2Info
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Boot2Info CheckHashes( const Boot2Info &info );
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};
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#endif // BLOCKS0TO7_H
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