| /* zenutils - Utilities for working with creative firmwares. |
| * Copyright 2007 (c) Rasmus Ry <rasmus.ry{at}gmail.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <iostream> |
| #include <iomanip> |
| #include <ctime> |
| #include <getpot/GetPot> |
| #include <file.h> |
| #include <updater.h> |
| #include <utils.h> |
| |
| |
| static const char VERSION[] = "0.1"; |
| |
| void print_version() |
| { |
| std::cout |
| << "update_extract - Extracts a Creative firmware from an updater" |
| " executable." << std::endl |
| << "Version " << VERSION << std::endl |
| << "Copyright (c) 2007 Rasmus Ry" << std::endl; |
| } |
| |
| void print_help() |
| { |
| print_version(); |
| std::cout << std::endl |
| << "Usage: update_extract [command] [options]" << std::endl |
| << std::endl |
| << " Commands:" << std::endl |
| << " -h,--help" << std::endl |
| << " prints this message." << std::endl |
| << " -u,--updater [file]" << std::endl |
| << " specifies the updater executable." << std::endl |
| << std::endl |
| << " Options:" << std::endl |
| << " -V,--verbose" << std::endl |
| << " prints verbose messages." << std::endl |
| << " -f,--firmware [file]" << std::endl |
| << " specifies the firmware arhive file name." << std::endl |
| << " -k,--key [key]" << std::endl |
| << " specifies the firmware archive key." << std::endl |
| << " -o,--offset [offset]" << std::endl |
| << " specifies the firmware archive offset in c-style" |
| " hexadecimal." << std::endl |
| << std::endl |
| ; |
| } |
| |
| std::string options_name(const std::string& name) |
| { |
| return shared::replace_extension(name, ".opt"); |
| } |
| |
| std::string default_firmware_name(const std::string& name) |
| { |
| return shared::replace_extension(name, "_rk.bin"); |
| } |
| |
| int process_arguments(int argc, char* argv[]) |
| { |
| //-------------------------------------------------------------------- |
| // Parse input variables. |
| //-------------------------------------------------------------------- |
| |
| GetPot cl(argc, argv); |
| if (cl.size() == 1 || cl.search(2, "-h", "--help")) |
| { |
| print_help(); |
| return 1; |
| } |
| |
| std::string updatername; |
| if (cl.search("-u") || cl.search("--updater")) |
| updatername = cl.next(""); |
| if (updatername.empty()) |
| { |
| std::cerr << "Updater executable must be specified." << std::endl; |
| return 2; |
| } |
| |
| std::string firmarename = default_firmware_name(updatername); |
| if (cl.search("-f") || cl.search("--firmware")) |
| firmarename = cl.next(firmarename.c_str()); |
| |
| bool verbose = false; |
| if (cl.search("-V") || cl.search("--verbose")) |
| verbose = true; |
| |
| // Get or find the firmware archive key. |
| std::string key; |
| if (cl.search("-k") || cl.search("--key")) |
| key = cl.next(""); |
| |
| if (key.empty()) |
| { |
| if (verbose) |
| std::cout << "[*] Looking for firmware archive key..." |
| << std::endl; |
| shared::bytes buffer; |
| if (!shared::read_file(updatername, buffer)) |
| { |
| std::cerr << "Failed to read the firmware updater executable." |
| << std::endl; |
| return 3; |
| } |
| key = zen::find_firmware_key(&buffer[0], buffer.size()); |
| if (key.empty()) |
| { |
| std::cerr << "Failed to find the firmware archive key." |
| << std::endl; |
| return 4; |
| } |
| } |
| |
| // Get or find the firmware archive offset. |
| std::string offset; |
| dword offset_pa = 0; |
| if (cl.search("-o") || cl.search("--ofset")) |
| offset = cl.next(""); |
| |
| if (offset.empty()) |
| { |
| if (verbose) |
| std::cout << "[*] Looking for firmware archive offset..." |
| << std::endl; |
| |
| dword offset_va = 0; |
| if (!zen::find_firmware_archive(updatername, offset_va, offset_pa)) |
| { |
| std::cerr << "Failed to find the firmware archive offset." |
| << std::endl; |
| return 5; |
| } |
| } |
| else |
| { |
| int offset_val; |
| if (!sscanf(offset.c_str(), "0x%x", &offset_val)) |
| { |
| if (!sscanf(offset.c_str(), "0x%X", &offset_val)) |
| { |
| std::cerr << "\'" << offset |
| << "\' is not a valid c-style hexadecimal value." |
| << std::endl; |
| return 6; |
| } |
| } |
| offset_pa = static_cast<dword>(offset_val); |
| } |
| |
| // Read firmware archive size. |
| shared::bytes buffer; |
| if (!shared::read_file(updatername, buffer, offset_pa, sizeof(dword))) |
| { |
| std::cerr << "Failed to read the firmware archive size." << std::endl; |
| return 7; |
| } |
| dword archive_size = *(dword*)&buffer[0]; |
| |
| if (verbose) |
| { |
| std::cout << "[*] Printing input variables..." << std::endl; |
| std::cout << " Updater executable: " << updatername << std::endl; |
| std::cout << " Firmware archive: " << firmarename << std::endl; |
| std::cout << " Key: " << key << std::endl; |
| std::cout << " Offset: " |
| << std::hex << std::showbase << std::setw(10) |
| << std::setfill('0') << std::internal |
| << offset_pa << std::endl; |
| std::cout << " Size: " |
| << std::hex << std::showbase << std::setw(10) |
| << std::setfill('0') << std::internal |
| << archive_size << std::endl; |
| } |
| |
| |
| //-------------------------------------------------------------------- |
| // Extract the firmware archive from the updater. |
| //-------------------------------------------------------------------- |
| |
| if (verbose) |
| std::cout << "[*] Reading firmware archive..." << std::endl; |
| |
| // Read the firmware archive. |
| offset_pa += sizeof(dword); |
| if (!shared::read_file(updatername, buffer, offset_pa, archive_size)) |
| { |
| std::cerr << "Failed to read the firmware archive." << std::endl; |
| return 8; |
| } |
| |
| if (verbose) |
| std::cout << "[*] Decrypting firmware archive..." << std::endl; |
| |
| // Decrypt the firmware archive. |
| if (!zen::crypt_firmware(key.c_str(), &buffer[0], buffer.size())) |
| { |
| std::cerr << "Failed to decrypt the firmware archive." << std::endl; |
| return 9; |
| } |
| |
| if (verbose) |
| std::cout << "[*] Decompressing firmware archive..." << std::endl; |
| |
| // Inflate the firmware archive to the output file. |
| if (!shared::inflate_to_file(buffer, firmarename.c_str())) |
| { |
| std::cerr << "Failed to decompress the firmware archive." << std::endl; |
| return 10; |
| } |
| |
| |
| //-------------------------------------------------------------------- |
| // Generate an options file for the extracted firmware archive. |
| //-------------------------------------------------------------------- |
| |
| // Get options filename for the given input file. |
| std::string optionsname = options_name(updatername); |
| |
| if (verbose) |
| std::cout << "[*] Producing options file..." << std::endl; |
| |
| // Produce options file for the given input file. |
| std::ofstream ofs; |
| ofs.open(optionsname.c_str(), std::ios::binary); |
| if (!ofs) |
| { |
| std::cerr << "Failed to create firmware archive options file." |
| << std::endl; |
| return 11; |
| } |
| |
| time_t timeval = time(NULL); |
| ofs << "# Options file generated at: " << ctime(&timeval) |
| << "updater = \'" << shared::double_quote(updatername) << "\'" |
| << std::endl |
| << "firmware = \'" << shared::double_quote(firmarename) << "\'" |
| << std::endl |
| << "offset = " << (offset_pa - sizeof(dword)) << std::endl |
| << "size = " << archive_size << std::endl |
| << "key = \'" << key << "\'" << std::endl; |
| |
| return 0; |
| } |
| |
| int main(int argc, char* argv[]) |
| { |
| try |
| { |
| return process_arguments(argc, argv); |
| } |
| catch (const std::exception& xcpt) |
| { |
| std::cerr << "Exception caught: " << xcpt.what() << std::endl; |
| return -1; |
| } |
| catch (...) |
| { |
| std::cerr << "Unknown exception caught." << std::endl; |
| return -2; |
| } |
| return -3; |
| } |