| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2015 by Amaury Pouly |
| * |
| * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| |
| #include <cstdio> |
| #include <cstring> |
| #include <cstdlib> |
| #include <stdint.h> |
| #include <fstream> |
| #include <sys/stat.h> |
| #include <getopt.h> |
| #include <sys/types.h> |
| #include <dirent.h> |
| #include <unistd.h> |
| #include <vector> |
| #include <string> |
| #include <algorithm> |
| #include <ctime> |
| #include <sstream> |
| |
| struct jz4760_fw_hdr_t |
| { |
| uint32_t magic; |
| uint32_t fs_size; // unsure, always 0x7f00000 |
| uint32_t hdr_size; // header size in sectors, always 4 |
| uint32_t pad; |
| char datetime[12]; // format: yyyymmddhhmm |
| uint32_t nr_files; |
| uint32_t unk; // always 2, seems related to CRC, maybe CRC mode |
| uint32_t pad2[3]; |
| uint8_t machine[8]; |
| uint8_t pad3[452]; |
| uint32_t eoh; // end of header |
| } __attribute__((packed)); |
| |
| const uint32_t JZ4760_FW_MAGIC = 0x49484653; // 'IHFS' |
| const uint32_t JZ4760_FW_EOH = 0x55aa55aa; // end of header |
| |
| struct jz4760_fw_file_t |
| { |
| char name[56]; |
| uint32_t offset; // absolute offset in sectors |
| uint32_t size; // in bytes |
| } __attribute__((packed)); |
| |
| const uint32_t jz4760_crc_key[256] = |
| { |
| 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, |
| 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, |
| 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, |
| 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, |
| 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, |
| 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, |
| 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, |
| 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, |
| 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, |
| 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, |
| 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, |
| 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, |
| 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, |
| 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, |
| 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, |
| 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, |
| 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, |
| 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, |
| 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, |
| 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, |
| 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, |
| 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, |
| 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, |
| 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, |
| 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, |
| 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, |
| 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, |
| 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, |
| 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, |
| 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, |
| 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, |
| 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0, |
| }; |
| |
| /* This table is generated programmatically: it contains two copies of a 172-bytes |
| * table. This table contains the lower 8-bit of the first 172 prime numbers: |
| * 2, 3, 5, 7, ..., 251(=0xfb), 257(=0x101 -> 0x01), ... */ |
| const unsigned JZ4760_XOR_KEY_SIZE = 344; |
| uint8_t jz4760_xor_key[JZ4760_XOR_KEY_SIZE] = |
| { |
| 0x02, 0x03, 0x05, 0x07, 0x0b, 0x0d, 0x11, 0x13, |
| 0x17, 0x1d, 0x1f, 0x25, 0x29, 0x2b, 0x2f, 0x35, |
| 0x3b, 0x3d, 0x43, 0x47, 0x49, 0x4f, 0x53, 0x59, |
| 0x61, 0x65, 0x67, 0x6b, 0x6d, 0x71, 0x7f, 0x83, |
| 0x89, 0x8b, 0x95, 0x97, 0x9d, 0xa3, 0xa7, 0xad, |
| 0xb3, 0xb5, 0xbf, 0xc1, 0xc5, 0xc7, 0xd3, 0xdf, |
| 0xe3, 0xe5, 0xe9, 0xef, 0xf1, 0xfb, 0x01, 0x07, |
| 0x0d, 0x0f, 0x15, 0x19, 0x1b, 0x25, 0x33, 0x37, |
| 0x39, 0x3d, 0x4b, 0x51, 0x5b, 0x5d, 0x61, 0x67, |
| 0x6f, 0x75, 0x7b, 0x7f, 0x85, 0x8d, 0x91, 0x99, |
| 0xa3, 0xa5, 0xaf, 0xb1, 0xb7, 0xbb, 0xc1, 0xc9, |
| 0xcd, 0xcf, 0xd3, 0xdf, 0xe7, 0xeb, 0xf3, 0xf7, |
| 0xfd, 0x09, 0x0b, 0x1d, 0x23, 0x2d, 0x33, 0x39, |
| 0x3b, 0x41, 0x4b, 0x51, 0x57, 0x59, 0x5f, 0x65, |
| 0x69, 0x6b, 0x77, 0x81, 0x83, 0x87, 0x8d, 0x93, |
| 0x95, 0xa1, 0xa5, 0xab, 0xb3, 0xbd, 0xc5, 0xcf, |
| 0xd7, 0xdd, 0xe3, 0xe7, 0xef, 0xf5, 0xf9, 0x01, |
| 0x05, 0x13, 0x1d, 0x29, 0x2b, 0x35, 0x37, 0x3b, |
| 0x3d, 0x47, 0x55, 0x59, 0x5b, 0x5f, 0x6d, 0x71, |
| 0x73, 0x77, 0x8b, 0x8f, 0x97, 0xa1, 0xa9, 0xad, |
| 0xb3, 0xb9, 0xc7, 0xcb, 0xd1, 0xd7, 0xdf, 0xe5, |
| 0xf1, 0xf5, 0xfb, 0xfd, 0x02, 0x03, 0x05, 0x07, |
| 0x0b, 0x0d, 0x11, 0x13, 0x17, 0x1d, 0x1f, 0x25, |
| 0x29, 0x2b, 0x2f, 0x35, 0x3b, 0x3d, 0x43, 0x47, |
| 0x49, 0x4f, 0x53, 0x59, 0x61, 0x65, 0x67, 0x6b, |
| 0x6d, 0x71, 0x7f, 0x83, 0x89, 0x8b, 0x95, 0x97, |
| 0x9d, 0xa3, 0xa7, 0xad, 0xb3, 0xb5, 0xbf, 0xc1, |
| 0xc5, 0xc7, 0xd3, 0xdf, 0xe3, 0xe5, 0xe9, 0xef, |
| 0xf1, 0xfb, 0x01, 0x07, 0x0d, 0x0f, 0x15, 0x19, |
| 0x1b, 0x25, 0x33, 0x37, 0x39, 0x3d, 0x4b, 0x51, |
| 0x5b, 0x5d, 0x61, 0x67, 0x6f, 0x75, 0x7b, 0x7f, |
| 0x85, 0x8d, 0x91, 0x99, 0xa3, 0xa5, 0xaf, 0xb1, |
| 0xb7, 0xbb, 0xc1, 0xc9, 0xcd, 0xcf, 0xd3, 0xdf, |
| 0xe7, 0xeb, 0xf3, 0xf7, 0xfd, 0x09, 0x0b, 0x1d, |
| 0x23, 0x2d, 0x33, 0x39, 0x3b, 0x41, 0x4b, 0x51, |
| 0x57, 0x59, 0x5f, 0x65, 0x69, 0x6b, 0x77, 0x81, |
| 0x83, 0x87, 0x8d, 0x93, 0x95, 0xa1, 0xa5, 0xab, |
| 0xb3, 0xbd, 0xc5, 0xcf, 0xd7, 0xdd, 0xe3, 0xe7, |
| 0xef, 0xf5, 0xf9, 0x01, 0x05, 0x13, 0x1d, 0x29, |
| 0x2b, 0x35, 0x37, 0x3b, 0x3d, 0x47, 0x55, 0x59, |
| 0x5b, 0x5f, 0x6d, 0x71, 0x73, 0x77, 0x8b, 0x8f, |
| 0x97, 0xa1, 0xa9, 0xad, 0xb3, 0xb9, 0xc7, 0xcb, |
| 0xd1, 0xd7, 0xdf, 0xe5, 0xf1, 0xf5, 0xfb, 0xfd, |
| }; |
| |
| bool g_verbose = false; |
| |
| uint8_t *read_file(const std::string& path, size_t& size) |
| { |
| std::ifstream fin(path.c_str(), std::ios::binary); |
| if(!fin) |
| { |
| printf("Error: cannot open '%s'\n", path.c_str()); |
| return 0; |
| } |
| fin.seekg(0, std::ios::end); |
| size = fin.tellg(); |
| fin.seekg(0, std::ios::beg); |
| uint8_t *buf = new uint8_t[size]; |
| fin.read((char *)buf, size); |
| return buf; |
| } |
| |
| bool write_file(const std::string& path, uint8_t *buf, size_t size) |
| { |
| std::ofstream fout(path.c_str(), std::ios::binary); |
| if(!fout) |
| { |
| printf("Error: cannot open '%s'\n", path.c_str()); |
| return false; |
| } |
| fout.write((char *)buf, size); |
| fout.close(); |
| return true; |
| } |
| |
| bool create_dir(const std::string& dir) |
| { |
| mkdir(dir.c_str(), 0755); |
| return true; |
| } |
| |
| // the firmware uses '\' as separator |
| bool create_file(std::string path, uint8_t *buf, size_t size) |
| { |
| size_t pos = -1; |
| while((pos = path.find_first_of("/\\", pos + 1)) != std::string::npos) |
| { |
| path[pos] = '/'; |
| create_dir(path.substr(0, pos)); |
| } |
| return write_file(path, buf, size); |
| } |
| |
| bool list_files(const std::string& prefix, const std::string& path, |
| std::vector< std::string >& list) |
| { |
| DIR *dir = opendir((prefix + "/" + path).c_str()); |
| if(!dir) |
| { |
| printf("Error: cannot open directory '%s'\n", path.c_str()); |
| goto Lerr; |
| } |
| struct dirent *entry; |
| while((entry = readdir(dir))) |
| { |
| std::string p = entry->d_name; |
| if(p == "." || p == "..") |
| continue; |
| std::string subname = prefix + "/" + path + "/" + entry->d_name; |
| struct stat st; |
| if(lstat(subname.c_str(), &st) != 0) |
| { |
| printf("Error: cannot stat '%s'\n", subname.c_str()); |
| goto Lerr; |
| } |
| if(!path.empty()) |
| p = path + "/" + p; |
| if(st.st_mode & S_IFREG) |
| list.push_back(p); |
| if(st.st_mode & S_IFDIR) |
| { |
| if(!list_files(prefix, p, list)) |
| goto Lerr; |
| } |
| } |
| closedir(dir); |
| return true; |
| Lerr: |
| closedir(dir); |
| return false; |
| } |
| |
| std::vector< std::string > list_files(const std::string& path, bool& ok) |
| { |
| std::vector< std::string > list; |
| ok = list_files(path, "", list); |
| return list; |
| } |
| |
| uint32_t jz4760_crc(uint32_t crc, uint8_t *buf, size_t size) |
| { |
| while(size--) |
| crc = jz4760_crc_key[*buf++ ^ ((crc & 0xff00) >> 8)] ^ (crc << 8); |
| return crc; |
| } |
| |
| int unpack(int argc, char **argv) |
| { |
| std::string input_file; |
| std::string output_dir; |
| while(1) |
| { |
| int c = getopt(argc, argv, "i:o:v"); |
| if(c == -1) |
| break; |
| switch(c) |
| { |
| case 'v': |
| g_verbose = true; |
| break; |
| case 'i': |
| input_file = optarg; |
| break; |
| case 'o': |
| output_dir = optarg; |
| break; |
| default: |
| abort(); |
| } |
| } |
| if(optind != argc) |
| return printf("Error: extra arguments on command line\n"); |
| if(input_file.empty()) |
| return printf("Error: you need to specify the input file\n"); |
| if(output_dir.empty()) |
| printf("Warning: you did not specify an output directory, this will be a dry run\n"); |
| size_t fw_size; |
| uint8_t *fw_buf = read_file(input_file, fw_size); |
| if(!fw_buf) |
| return 1; |
| /* firmware has N blocks of 512 plus a 4 byte checksum at the end |
| * each file must have at least 4 sectors for the header and 256 for the entries |
| * for a total of 260 */ |
| if(fw_size < 512 * 260) |
| return printf("Error: firmware is too small\n"); |
| if((fw_size - 4) % 512) |
| return printf("Error: firmware has bad size\n"); |
| struct jz4760_fw_hdr_t *fw_hdr = (struct jz4760_fw_hdr_t *)fw_buf; |
| if(fw_hdr->magic != JZ4760_FW_MAGIC) |
| return printf("Error: firmware has wrong magic value\n"); |
| if(fw_hdr->eoh != JZ4760_FW_EOH) |
| return printf("Error: firmware has wrong end of header value\n"); |
| if(g_verbose) |
| { |
| printf("Header:\n"); |
| printf(" Magic: %#x\n", fw_hdr->magic); |
| printf(" FS Size: %#x\n", fw_hdr->fs_size); |
| printf(" Header Size: %d\n", fw_hdr->hdr_size); |
| printf(" Date: %c%c/%c%c/%c%c%c%c\n", fw_hdr->datetime[6], |
| fw_hdr->datetime[7], fw_hdr->datetime[4], fw_hdr->datetime[5], |
| fw_hdr->datetime[0], fw_hdr->datetime[1], fw_hdr->datetime[2], |
| fw_hdr->datetime[3]); |
| printf(" Time: %c%c:%c%c\n", fw_hdr->datetime[8], |
| fw_hdr->datetime[9], fw_hdr->datetime[10], fw_hdr->datetime[11]); |
| printf(" Files: %u\n", fw_hdr->nr_files); |
| printf(" Unknown: %x\n", fw_hdr->unk); |
| printf(" Machine: %.8s\n", fw_hdr->machine); |
| } |
| uint32_t crc = *reinterpret_cast< uint32_t* >(fw_buf + fw_size - 4); |
| if(crc != jz4760_crc(0, fw_buf, fw_size - 4)) |
| return printf("Error: CRC does not match\n"); |
| // check number of files |
| if(fw_hdr->nr_files > 2048) |
| return printf("Error: too many files\n"); |
| struct jz4760_fw_file_t *fw_file = (struct jz4760_fw_file_t *)(fw_buf + 4 * 512); |
| for(unsigned i = 0; i < fw_hdr->nr_files; i++) |
| { |
| if(g_verbose) |
| { |
| printf("File #%d:\n", i); |
| printf(" Name: %s\n", fw_file[i].name); |
| printf(" Offset: %#x\n", fw_file[i].offset); |
| printf(" Size: %u\n", fw_file[i].size); |
| } |
| if(output_dir.empty()) |
| continue; |
| create_file(output_dir + "/" + std::string(fw_file[i].name, sizeof(fw_file[i].name)), |
| fw_buf + 512 * fw_file[i].offset, fw_file[i].size); |
| } |
| return 0; |
| } |
| |
| bool parse_time(const std::string& time, std::tm& tm) |
| { |
| std::istringstream iss(time); |
| iss >> tm.tm_mday; |
| if(iss.get() != '/') |
| goto Lwarn; |
| iss >> tm.tm_mon; |
| if(iss.get() != '/') |
| goto Lwarn; |
| iss >> tm.tm_year; |
| iss >> tm.tm_hour; |
| if(iss.get() != ':') |
| goto Lwarn; |
| iss >> tm.tm_min; |
| return true; |
| Lwarn: |
| printf("Error: wrong time format\n"); |
| return false; |
| } |
| |
| bool istrcmp(const std::string& a, const std::string& b) |
| { |
| return strcasecmp(a.c_str(), b.c_str()) < 0; |
| } |
| |
| int pack(int argc, char **argv) |
| { |
| std::string input_dir; |
| std::string output_file; |
| std::string machine; |
| std::string datetime; |
| while(1) |
| { |
| int c = getopt(argc, argv, "i:o:m:vt:"); |
| if(c == -1) |
| break; |
| switch(c) |
| { |
| case 'v': |
| g_verbose = true; |
| break; |
| case 'i': |
| input_dir = optarg; |
| break; |
| case 'o': |
| output_file = optarg; |
| break; |
| case 'm': |
| machine = optarg; |
| break; |
| case 't': |
| datetime = optarg; |
| break; |
| default: |
| abort(); |
| } |
| } |
| if(optind != argc) |
| return printf("Error: extra arguments on command line\n"); |
| if(input_dir.empty()) |
| return printf("Error: you need to specify the input file\n"); |
| if(machine.empty()) |
| printf("Warning: you did not specify the machine flags, the produce file may be invalid\n"); |
| if(output_file.empty()) |
| return printf("Error: you must specify an output file\n"); |
| bool ok = true; |
| std::vector< std::string > list = list_files(input_dir, ok); |
| if(!ok) |
| return printf("Error: there were some errors while listing files\n"); |
| /* NOTE: keep compatibility with original packtools which sorts files, |
| * I doubt the sorted order is really necessary but not costly anyway */ |
| std::sort(list.begin(), list.end(), istrcmp); |
| if(g_verbose) |
| { |
| for(size_t i = 0; i < list.size(); i++) |
| printf("%s\n", list[i].c_str()); |
| } |
| if(list.size() > 2048) |
| return printf("Error: cannot make an archive with more than 2048 files\n"); |
| struct jz4760_fw_hdr_t hdr; |
| memset(&hdr, 0, sizeof(hdr)); |
| hdr.magic = JZ4760_FW_MAGIC; |
| hdr.fs_size = 0x7f00000; |
| hdr.hdr_size = 4; |
| std::time_t time = std::time(0); |
| std::tm *tm = localtime(&time); |
| if(!datetime.empty()) |
| if(!parse_time(datetime, *tm)) |
| return 1; |
| char str[13]; |
| snprintf(str, sizeof(str), "%04d%02d%02d%02d%02d", tm->tm_year, tm->tm_mon, |
| tm->tm_mday, tm->tm_hour, tm->tm_min); |
| memcpy(hdr.datetime, str, sizeof(hdr.datetime)); |
| hdr.unk = 2; |
| hdr.nr_files = list.size(); |
| memcpy(hdr.machine, machine.c_str(), sizeof(hdr.machine)); |
| hdr.eoh = JZ4760_FW_EOH; |
| uint32_t crc = jz4760_crc(0, (uint8_t *)&hdr, sizeof(hdr)); |
| |
| std::ofstream fout(output_file.c_str(), std::ios::binary); |
| fout.write((char *)&hdr, sizeof(hdr)); |
| // three empty sectors |
| uint8_t zero_sector[512]; |
| memset(zero_sector, 0, sizeof(zero_sector)); |
| crc = jz4760_crc(crc, zero_sector, sizeof(zero_sector)); |
| fout.write((char *)zero_sector, sizeof(zero_sector)); |
| crc = jz4760_crc(crc, zero_sector, sizeof(zero_sector)); |
| fout.write((char *)zero_sector, sizeof(zero_sector)); |
| crc = jz4760_crc(crc, zero_sector, sizeof(zero_sector)); |
| fout.write((char *)zero_sector, sizeof(zero_sector)); |
| // write file headers |
| size_t tot_size = 260; // 4 for headers, 256 for file headers |
| for(size_t i = 0; i < list.size(); i++) |
| { |
| jz4760_fw_file_t file; |
| memset(&file, 0, sizeof(file)); |
| std::string name = list[i]; |
| for(size_t j = 0; j < name.size(); j++) |
| if(name[j] == '/') |
| name[j] = '\\'; |
| if(name.size() > sizeof(file.name)) |
| return printf("Error: filename '%s' is too long\n", name.c_str()); |
| memcpy(file.name, name.c_str(), name.size()); |
| struct stat st; |
| if(lstat((input_dir + "/" + list[i]).c_str(), &st)) |
| return printf("Error: cannot stat file '%s'\n", list[i].c_str()); |
| file.size = st.st_size; |
| file.offset = tot_size; |
| tot_size += (file.size + 511) / 512; |
| crc = jz4760_crc(crc, (uint8_t *)&file, sizeof(file)); |
| fout.write((char *)&file, sizeof(file)); |
| } |
| // finish writing the 256 sectors |
| for(size_t i = list.size(); i < 2048; i++) |
| { |
| crc = jz4760_crc(crc, zero_sector, sizeof(jz4760_fw_file_t)); |
| fout.write((char *)zero_sector, sizeof(jz4760_fw_file_t)); |
| } |
| // write the files |
| for(size_t i = 0; i < list.size(); i++) |
| { |
| size_t sz; |
| uint8_t *data = read_file(input_dir + "/" + list[i], sz); |
| if(!data) |
| return printf("Error: cannot read file '%s'\n", list[i].c_str()); |
| crc = jz4760_crc(crc, data, sz); |
| fout.write((char *)data, sz); |
| delete data; |
| if(sz % 512) |
| { |
| crc = jz4760_crc(crc, zero_sector, 512 - (sz % 512)); |
| fout.write((char *)zero_sector, 512 - (sz % 512)); |
| } |
| } |
| // write the crc |
| fout.write((char *)&crc, sizeof(crc)); |
| fout.close(); |
| return 0; |
| } |
| |
| int descramble(int argc, char **argv) |
| { |
| std::string input_file; |
| std::string output_file; |
| while(1) |
| { |
| int c = getopt(argc, argv, "i:o:"); |
| if(c == -1) |
| break; |
| switch(c) |
| { |
| case 'i': |
| input_file = optarg; |
| break; |
| case 'o': |
| output_file = optarg; |
| break; |
| default: |
| abort(); |
| } |
| } |
| if(optind != argc) |
| return printf("Error: extra arguments on command line\n"); |
| if(input_file.empty() || output_file.empty()) |
| return printf("Error: you need to specify the input and output files\n"); |
| size_t fw_size; |
| uint8_t *fw_buf = read_file(input_file, fw_size); |
| if(!fw_buf) |
| return 1; |
| for(size_t i = 0; i < fw_size; i++) |
| fw_buf[i] ^= jz4760_xor_key[i % JZ4760_XOR_KEY_SIZE]; |
| if(!write_file(output_file, fw_buf, fw_size)) |
| return 1; |
| return 0; |
| } |
| |
| void usage() |
| { |
| printf("usage: [--pack|--unpack|--descramble|--scramble] <options>\n"); |
| printf(" unpack options:\n"); |
| printf(" -i <file> Input file\n"); |
| printf(" -o <dir> Output directory\n"); |
| printf(" -v Verbose output\n"); |
| printf(" pack options:\n"); |
| printf(" -i <dir> Input directory\n"); |
| printf(" -o <file> Output file\n"); |
| printf(" -m <mach> Machine flags\n"); |
| printf(" -v Verbose output\n"); |
| printf(" -t <time> Override date/time (dd/mm/yy hh:mm)\n"); |
| printf(" (de)scramble options:\n"); |
| printf(" -i <file> Input file\n"); |
| printf(" -o <file> Output file\n"); |
| exit(1); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| if(argc <= 1) |
| usage(); |
| if(strcmp(argv[1], "--unpack") == 0) |
| return unpack(argc - 1, argv + 1); |
| if(strcmp(argv[1], "--pack") == 0) |
| return pack(argc - 1, argv + 1); |
| if(strcmp(argv[1], "--descramble") == 0 || strcmp(argv[1], "--scramble") == 0) |
| return descramble(argc - 1, argv + 1); |
| usage(); |
| return 1; |
| } |
| |