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70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*
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* minute - a port of the "mini" IOS replacement for the Wii U.
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*
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* Copyright (C) 2016 SALT
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* Copyright (C) 2016 Daz Jones <daz@dazzozo.com>
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*
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* This code is licensed to you under the terms of the GNU GPL, version 2;
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* see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
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*/
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#include "types.h"
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#include "utils.h"
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#include "memory.h"
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#include "debug.h"
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#include <string.h>
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#include <sys/errno.h>
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#include <stdio.h>
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#include "sha.h"
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#include "crypto.h"
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#include "smc.h"
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#include "ancast.h"
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u32 ancast_iop_load(u8* buffer, size_t size)
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{
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u32 magic = read32((u32) buffer);
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if(magic != ANCAST_MAGIC) {
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DEBUG("ancast_iop_load: not an ancast image (magic is 0x%08lX, expected 0x%08lX).\n", magic, ANCAST_MAGIC);
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return 0;
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}
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u32 sig_offset = read32((u32) &buffer[0x08]);
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u32 sig_type = read32((u32) &buffer[sig_offset]);
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if (sig_type != 0x02) {
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DEBUG("ancast_iop_load: unexpected signature type 0x%02lX.\n", sig_type);
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return 0;
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}
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ancast_header* ancast = (ancast_header*)&buffer[0x1A0];
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u8 target = ancast->device >> 4;
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if(target != ANCAST_TARGET_IOP) {
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DEBUG("ancast: not an IOP image (target is 0x%02X, expected 0x%02X).\n", target, ANCAST_TARGET_IOP);
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return 0;
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}
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u8* body = (u8*)(ancast + 1);
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u32 hash[SHA_HASH_WORDS] = {0};
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sha_hash(body, hash, ancast->body_size);
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u32* h1 = ancast->body_hash;
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u32* h2 = hash;
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if(memcmp(h1, h2, SHA_HASH_SIZE) != 0) {
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DEBUG("ancast: body hash check failed.\n");
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DEBUG(" expected: %08lX%08lX%08lX%08lX%08lX\n", h1[0], h1[1], h1[2], h1[3], h1[4]);
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DEBUG(" calculated: %08lX%08lX%08lX%08lX%08lX\n", h2[0], h2[1], h2[2], h2[3], h2[4]);
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return 0;
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}
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ios_header* header = (ios_header*)body;
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u32 vector = (u32) &body[header->header_size];
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return vector;
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}
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