mirror of
https://github.com/wiidev/usbloadergx.git
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535 lines
12 KiB
C++
535 lines
12 KiB
C++
/****************************************************************************
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* Copyright (C) 2013 Cyan
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* Copyright (C) 2011 Dimok
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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#include <stdio.h>
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#include <malloc.h>
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#include <string.h>
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#include "prompts/ProgressWindow.h"
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#include "FileOperations/fileops.h"
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#include "language/gettext.h"
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#include "utils/ShowError.h"
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#include "utils/tools.h"
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#include "wad.h"
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extern "C"
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{
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void aes_set_key(u8 *key);
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void aes_decrypt(u8 *iv, u8 *inbuf, u8 *outbuf, unsigned long long len);
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void _decrypt_title_key(u8 *tik, u8 *title_key);
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}
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typedef struct map_entry
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{
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char name[8];
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u8 hash[20];
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} __attribute__((packed)) map_entry_t;
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typedef struct uid_entry {
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u64 title_id;
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u32 uid;
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} __attribute__((packed)) uid_entry_t;
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Wad::Wad(const char *wadpath, bool prompt)
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: pFile(0), header(0),
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p_tik(0), p_tmd(0),
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content_map(0), content_map_size(0),
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content_start(0)
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{
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showPrompt = prompt;
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Open(wadpath);
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}
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Wad::~Wad()
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{
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Close();
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}
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void Wad::Close(void)
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{
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if(pFile)
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fclose(pFile);
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if(header)
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free(header);
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if(p_tik)
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free(p_tik);
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if(p_tmd)
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free(p_tmd);
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if(content_map)
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free(content_map);
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pFile = 0;
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header = 0;
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p_tik = 0;
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p_tmd = 0;
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content_map = 0;
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content_map_size = 0;
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}
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bool Wad::Open(const char *wadpath)
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{
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if(!wadpath)
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return false;
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// Close if another file is opened already
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Close();
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// Open file
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pFile = fopen(wadpath, "rb");
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if(!pFile)
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{
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if(showPrompt)
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ShowError(tr("Can't open file: %s"), wadpath);
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return false;
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}
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// Read wad header
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header = (wadHeader *) malloc(sizeof(wadHeader));
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if(!header)
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{
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if(showPrompt)
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ShowError(tr("Not enough memory."));
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return false;
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}
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if(fread(header, 1, sizeof(wadHeader), pFile) != sizeof(wadHeader))
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{
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if(showPrompt)
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ShowError(tr("Failed to read wad header."));
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return false;
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}
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// Check for sanity
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if(header->header_len != sizeof(wadHeader))
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{
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if(showPrompt)
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ShowError(tr("Invalid wad file."));
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return false;
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}
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u32 offset = round_up( header->header_len, 64 );
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offset += round_up( header->certs_len, 64 );
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if (header->crl_len)
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offset += round_up( header->crl_len, 64 );
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// Read title ticket
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p_tik = (u8 *) malloc(header->tik_len);
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if(!p_tik)
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{
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if(showPrompt)
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ShowError(tr("Not enough memory."));
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return false;
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}
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fseek(pFile, offset, SEEK_SET);
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if(fread(p_tik, 1, header->tik_len, pFile) != header->tik_len)
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{
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if(showPrompt)
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ShowError(tr("Failed to read ticket."));
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return false;
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}
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offset += round_up( header->tik_len, 64 );
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// Read title tmd
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p_tmd = (u8 *) malloc(header->tmd_len);
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if(!p_tik)
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{
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if(showPrompt)
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ShowError(tr("Not enough memory."));
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return false;
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}
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fseek(pFile, offset, SEEK_SET);
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if(fread(p_tmd, 1, header->tmd_len, pFile) != header->tmd_len)
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{
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if(showPrompt)
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ShowError(tr("Failed to read tmd file."));
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return false;
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}
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offset += round_up( header->tmd_len, 64 );
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// Prepare offset for install
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content_start = offset;
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return true;
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}
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bool Wad::UnInstall(const char *installpath)
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{
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if(!installpath || !pFile || !header || !p_tmd || !p_tik)
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return false;
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char filepath[1024];
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tmd *tmd_data = (tmd *) SIGNATURE_PAYLOAD((signed_blob *) p_tmd);
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// trim ending slash
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while(installpath[strlen(installpath)-1] == '/')
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{
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char *pathPtr = strrchr(installpath, '/');
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if(pathPtr) *pathPtr = 0;
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}
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int result = true;
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// Remove ticket
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snprintf(filepath, sizeof(filepath), "%s/ticket/%08x/%08x.tik", installpath, (unsigned int)(tmd_data->title_id >> 32), (unsigned int) tmd_data->title_id);
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if(!RemoveFile(filepath))
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result = false;
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// Remove contents / data
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snprintf(filepath, sizeof(filepath), "%s/title/%08x/%08x/", installpath, (unsigned int) (tmd_data->title_id >> 32), (unsigned int) tmd_data->title_id);
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if(!RemoveDirectory(filepath))
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result = false;
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return result;
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}
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bool Wad::Install(const char *installpath)
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{
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if(!installpath || !pFile || !header || !p_tmd || !p_tik)
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return false;
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char filepath[1024];
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u8 title_key[16];
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tmd *tmd_data = (tmd *) SIGNATURE_PAYLOAD((signed_blob *) p_tmd);
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// Create necessary folders if not existing
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snprintf(filepath, sizeof(filepath), "%s/ticket/%08x/", installpath, (unsigned int) (tmd_data->title_id >> 32));
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CreateSubfolder(filepath);
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snprintf(filepath, sizeof(filepath), "%s/title/%08x/%08x/content/", installpath, (unsigned int) (tmd_data->title_id >> 32), (unsigned int) tmd_data->title_id);
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CreateSubfolder(filepath);
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snprintf(filepath, sizeof(filepath), "%s/title/%08x/%08x/data/", installpath, (unsigned int) (tmd_data->title_id >> 32), (unsigned int) tmd_data->title_id);
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CreateSubfolder(filepath);
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// Write ticket file
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snprintf(filepath, sizeof(filepath), "%s/ticket/%08x/%08x.tik", installpath, (unsigned int) (tmd_data->title_id >> 32), (unsigned int) tmd_data->title_id);
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if(!WriteFile(filepath, p_tik, header->tik_len))
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return false;
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// Write tmd file
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snprintf(filepath, sizeof(filepath), "%s/title/%08x/%08x/content/title.tmd", installpath, (unsigned int) (tmd_data->title_id >> 32), (unsigned int) tmd_data->title_id);
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if(!WriteFile(filepath, p_tmd, header->tmd_len))
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return false;
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// Get title key and prepare decryption
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_decrypt_title_key(p_tik, title_key);
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aes_set_key(title_key);
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// Start progress
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ProgressCancelEnable(true);
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StartProgress(0, 0, 0, true, true);
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// Install contents
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bool result = InstallContents(installpath);
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// Stop progress
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ProgressStop();
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ProgressCancelEnable(false);
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if(!result)
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return false;
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// Update /sys/uid.sys
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if(!SetTitleUID(installpath, tmd_data->title_id))
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return false;
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return true;
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}
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bool Wad::WriteFile(const char *filepath, u8 *buffer, u32 len)
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{
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FILE *f = fopen(filepath, "wb");
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if(!f)
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{
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if(showPrompt)
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ShowError(tr("Can't create file: %s"), filepath);
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return false;
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}
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u32 write = fwrite(buffer, 1, len, f);
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fclose(f);
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if(write != len && showPrompt)
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ShowError(tr("Write error on file: %s"), filepath);
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return (write == len);
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}
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bool Wad::InstallContents(const char *installpath)
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{
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const u32 blocksize = 50 * 1024;
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u16 cnt;
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u32 totalDone = 0;
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u32 totalSize = 0;
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u32 offset = content_start;
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char filepath[1024];
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char progressTxt[80];
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u8 iv[16];
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bool userCanceled = false;
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// tmd
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tmd *tmd_data = (tmd *) SIGNATURE_PAYLOAD((signed_blob *) p_tmd);
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// Get total size for progress bar
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for (cnt = 0; cnt < tmd_data->num_contents; cnt++)
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{
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if(tmd_data->contents[cnt].type == 0x8001) {
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// shared content
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int result = CheckContentMap(installpath, &tmd_data->contents[cnt], filepath);
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if(result == 1) // exists already, skip file
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continue;
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}
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totalSize += round_up( tmd_data->contents[cnt].size, 64 );
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}
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for (cnt = 0; cnt < tmd_data->num_contents; cnt++)
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{
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if(ProgressCanceled())
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break;
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if(cnt > 0)
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offset += round_up( tmd_data->contents[cnt-1].size, 64);
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u32 done = 0, len;
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tmd_content *content = &tmd_data->contents[cnt];
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// Encrypted content size
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len = round_up( content->size, 64 );
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// Prepare iv for decryption
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memset(iv, 0, sizeof(iv));
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memcpy(iv, &cnt, 2);
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// Install content
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if(content->type == 0x8001) {
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// shared content
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int result = CheckContentMap(installpath, content, filepath);
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if(result == 1) // exists already, skip file
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continue;
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else if(result < 0) // failure
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return false;
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// else it does not exist...install it
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}
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else {
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// private content
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snprintf(filepath, sizeof(filepath), "%s/title/%08x/%08x/content/%08x.app", installpath, (unsigned int) (tmd_data->title_id >> 32), (unsigned int) tmd_data->title_id, (unsigned int) content->cid);
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}
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// Create file
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FILE *fp = fopen(filepath, "wb");
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if(!fp)
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{
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if(showPrompt)
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ShowError(tr("Can't create file: %s"), filepath);
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return false;
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}
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u8 * inbuf = (u8 *) malloc(blocksize);
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u8 * outbuf = (u8 *) malloc(blocksize);
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if(!inbuf || !outbuf)
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{
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if(showPrompt)
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ShowError(tr("Not enough memory."));
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if(inbuf) free(inbuf);
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if(outbuf) free(outbuf);
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fclose(fp);
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return false;
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}
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snprintf(progressTxt, sizeof(progressTxt), "%s %08x.app", tr("Installing content"), (unsigned int) content->cid);
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// Go to position
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fseek(pFile, offset, SEEK_SET);
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// Install content data
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while (done < len)
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{
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if(ProgressCanceled())
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{
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userCanceled = true;
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break;
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}
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ShowProgress(tr("Installing title..."), progressTxt, 0, totalDone + done, totalSize, true, true);
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// Encrypted data length
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u32 size = (len - done);
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if (size > blocksize)
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size = blocksize;
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// Decryted data length
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u32 dec_size = (content->size - done); // Content size not round up to 64
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if (dec_size > blocksize)
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dec_size = blocksize;
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// Read data
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if(fread(inbuf, 1, size, pFile) != size)
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break;
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// Decrypt data
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aes_decrypt(iv, inbuf, outbuf, size);
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// Write data
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if(fwrite(outbuf, 1, dec_size, fp) != dec_size)
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break;
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// Set new iv for next read chunk
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memcpy(iv, inbuf + blocksize - 16, 16);
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// Increase variables
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done += size;
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}
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// done
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free(inbuf);
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free(outbuf);
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fclose(fp);
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// update progress variable
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totalDone += len;
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// Check if the user canceled the install manually
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if(userCanceled)
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return false;
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// Check if the read/write process stopped before finishing
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if(done < len)
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{
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if(showPrompt)
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ShowError(tr("File read/write error."));
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return false;
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}
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}
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return true;
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}
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int Wad::CheckContentMap(const char *installpath, tmd_content *content, char *filepath)
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{
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if(!content_map)
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{
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// Get and keep content map in memory
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snprintf(filepath, 1024, "%s/shared1/content.map", installpath);
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if(LoadFileToMem(filepath, &content_map, &content_map_size) < 0 || content_map_size < sizeof(map_entry_t))
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{
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if(showPrompt)
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ShowError(tr("Can't read file: %s"), filepath);
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return -1;
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}
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content_map_size /= sizeof(map_entry_t);
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}
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map_entry_t *map = (map_entry_t *) content_map;
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for(u32 n = 0; n < content_map_size; n++)
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{
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if(memcmp(map[n].hash, content->hash, 20) == 0)
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return 1; // content exists already
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}
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// Content does not exists, append it.
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u32 next_entry = content_map_size;
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u8 *tmp = (u8 *) realloc(content_map, (next_entry + 1) * sizeof(map_entry_t));
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if(!tmp)
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{
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if(showPrompt)
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ShowError(tr("Not enough memory."));
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return -1;
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}
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content_map = tmp;
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content_map_size++;
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map = (map_entry_t *) content_map;
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char name[9];
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sprintf(name, "%08x", (unsigned int)next_entry);
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memcpy(map[next_entry].name, name, 8);
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memcpy(map[next_entry].hash, content->hash, 20);
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// write new content.map
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snprintf(filepath, 1024, "%s/shared1/content.map", installpath);
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if(!WriteFile(filepath, content_map, content_map_size * sizeof(map_entry_t)))
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return -1;
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snprintf(filepath, 1024, "%s/shared1/%08x.app", installpath, (unsigned int)next_entry);
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return 0;
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}
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bool Wad::SetTitleUID(const char *installpath, const u64 &tid)
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{
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char filepath[1024];
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u8 *uid_sys = NULL;
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u32 uid_sys_size = 0;
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// Read in uid.sys file
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snprintf(filepath, sizeof(filepath), "%s/sys/uid.sys", installpath);
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if(LoadFileToMem(filepath, &uid_sys, &uid_sys_size) < 0 || uid_sys_size < sizeof(uid_entry_t))
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{
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if(showPrompt)
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ShowError(tr("Can't read file: %s"), filepath);
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if(uid_sys) free(uid_sys);
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return false;
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}
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uid_sys_size /= sizeof(uid_entry_t);
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uid_entry_t *map = (uid_entry_t *) uid_sys;
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for(u32 i = 0; i < uid_sys_size; ++i)
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{
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if(map[i].title_id == tid)
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{
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// title entry exists already
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free(uid_sys);
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return true;
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}
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}
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// title entry does not exists, append it
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u32 next_entry = uid_sys_size;
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u8 *tmp = (u8 *) realloc(uid_sys, (next_entry + 1) * sizeof(uid_entry_t));
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if(!tmp)
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{
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if(showPrompt)
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ShowError(tr("Not enough memory."));
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free(uid_sys);
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return -1;
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}
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uid_sys = tmp;
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uid_sys_size++;
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map = (uid_entry_t *) uid_sys;
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map[next_entry].title_id = tid;
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map[next_entry].uid = map[next_entry-1].uid + 1;
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// write new uid.sys
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bool result = WriteFile(filepath, uid_sys, uid_sys_size * sizeof(uid_entry_t));
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free(uid_sys);
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return result;
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}
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