├── .gitignore ├── Cargo.lock ├── Cargo.toml ├── README.md └── src └── main.rs /.gitignore: -------------------------------------------------------------------------------- 1 | /target 2 | **/*.rs.bk -------------------------------------------------------------------------------- /Cargo.lock: -------------------------------------------------------------------------------- 1 | [[package]] 2 | name = "adler32" 3 | version = "1.0.3" 4 | source = "registry+https://github.com/rust-lang/crates.io-index" 5 | 6 | [[package]] 7 | name = "ansi_term" 8 | version = "0.11.0" 9 | source = "registry+https://github.com/rust-lang/crates.io-index" 10 | dependencies = [ 11 | "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)", 12 | ] 13 | 14 | [[package]] 15 | name = "atty" 16 | version = "0.2.11" 17 | source = "registry+https://github.com/rust-lang/crates.io-index" 18 | dependencies = [ 19 | "libc 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)", 20 | "termion 1.5.1 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"ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6" 311 | "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f" 312 | -------------------------------------------------------------------------------- /Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | name = "ctce8_cfg_tool" 3 | version = "0.1.0" 4 | authors = ["spoon"] 5 | edition = "2018" 6 | 7 | [dependencies] 8 | serde = { version = "1.0", features = ["derive"] } 9 | bincode = "1.1" 10 | crc = "1.8" 11 | flate2 = { version = "1.0", features = ["zlib"], default-features = false } 12 | clap = "2.32" 13 | 14 | [profile.release] 15 | panic = 'abort' -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ctce8_cfg_tool 2 | 3 | A tool for packing/unpacking ZTE Optical Modem configuration file 4 | 5 | 打包/解包中兴电信光猫 CTCE8 格式 cfg 配置文件工具 6 | 7 | 8 | ### 用法: 9 | 10 | ```PowerShell 11 | .\ctce8_cfg_tool.exe unpack "E:\e8_Config_Backup\ctce8_ZXHN_F450.cfg" ctce8_ZXHN_F450.xml 12 | .\ctce8_cfg_tool.exe pack ctce8_ZXHN_F450.xml ctce8_ZXHN_F450.cfg "ZXHN F450" 13 | ``` 14 | 15 | pack 打包命令的第三个参数是光猫设备名，一般为配置文件名中的字段。如我得到的配置文件名为 ctce8_ZXHN_F450.cfg，那么这个字符串就是 "ZXHN F450"，注意中间是空格。 16 | 17 | 准确描述见源码 [main.rs#L354](https://github.com/AlfnXd/ctce8_cfg_tool/blob/master/src/main.rs#L354)，Seek 跳过的部分就是这个字符串，可用 16 进制编辑器查看。 18 | 19 | ### 注意： 20 | 21 | - 操作有风险，请做好备份工作之后再继续。 22 | - 只在电信光猫 ZXHN F450 v2.0 上测试过。使用工具解包再打包回 cfg 文件，与光猫生成的 cfg 文件相同，修改后的重新打包的 cfg 文件也可以被光猫正确读取。 23 | - 建议使用此工具解包而不是选择 [offzip](http://aluigi.altervista.org/mytoolz/offzip.zip) 等工具，因为解包代码中有仔细的校验逻辑，不兼容的 cfg 文件会有提示。 24 | 25 | ### 感谢 26 | 27 | - [https://github.com/wx1183618058/ZET-Optical-Network-Terminal-Decoder](https://github.com/wx1183618058/ZET-Optical-Network-Terminal-Decoder) 28 | -------------------------------------------------------------------------------- /src/main.rs: -------------------------------------------------------------------------------- 1 | use std::fs::{self, File}; 2 | 3 | use std::io; 4 | use std::io::{BufReader, BufWriter}; 5 | use std::io::{Read, Write}; 6 | use std::io::{Seek, SeekFrom}; 7 | 8 | use std::mem; 9 | 10 | use std::error::{self, Error}; 11 | use std::fmt; 12 | 13 | use bincode::{self, config}; 14 | use crc::{crc32, Hasher32}; 15 | use serde::{Deserialize, Serialize}; 16 | 17 | // 错误统一处理 18 | macro_rules! turn { 19 | ($expr:expr) => { 20 | return core::result::Result::Err(core::convert::From::from($expr)); 21 | }; 22 | } 23 | 24 | #[derive(Debug)] 25 | enum CustomError<'a> { 26 | IoError(io::Error), 27 | UnpackError(UnpackError<'a>), 28 | DeserializeOrSerializeError(Box), 29 | DecompressError(flate2::DecompressError), 30 | CompressError(flate2::CompressError), 31 | } 32 | 33 | impl<'a> From for CustomError<'a> { 34 | fn from(err: io::Error) -> CustomError<'a> { 35 | CustomError::IoError(err) 36 | } 37 | } 38 | 39 | impl<'a> From> for CustomError<'a> { 40 | fn from(err: UnpackError<'a>) -> CustomError<'a> { 41 | CustomError::UnpackError(err) 42 | } 43 | } 44 | 45 | impl<'a> From> for CustomError<'a> { 46 | fn from(err: Box) -> CustomError<'a> { 47 | CustomError::DeserializeOrSerializeError(err) 48 | } 49 | } 50 | 51 | impl<'a> From for CustomError<'a> { 52 | fn from(err: flate2::DecompressError) -> CustomError<'a> { 53 | CustomError::DecompressError(err) 54 | } 55 | } 56 | 57 | impl<'a> From for CustomError<'a> { 58 | fn from(err: flate2::CompressError) -> CustomError<'a> { 59 | CustomError::CompressError(err) 60 | } 61 | } 62 | 63 | #[derive(Debug)] 64 | struct UnpackError<'a> { 65 | reason: &'a str, 66 | } 67 | 68 | impl<'a> fmt::Display for UnpackError<'a> { 69 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { 70 | write!(f, "{}", &self.reason) 71 | } 72 | } 73 | 74 | impl<'a> error::Error for UnpackError<'a> { 75 | fn description(&self) -> &str { 76 | &self.reason 77 | } 78 | 79 | fn source(&self) -> Option<&(dyn Error + 'static)> { 80 | None 81 | } 82 | } 83 | 84 | // ctce8 的一些文件数据格式定义 85 | #[derive(Serialize, Deserialize, PartialEq, Debug)] 86 | struct CTCE8HeaderPart1 { 87 | flag1: [u32; 4], 88 | blank_bytes1: [u32; 2], 89 | flag2: u32, 90 | blank_bytes2: [u32; 8], 91 | flag3: u32, 92 | flag4: [u32; 2], 93 | } 94 | 95 | #[derive(Serialize, Deserialize, PartialEq, Debug)] 96 | struct CTCE8HeaderPart2 { 97 | blank_bytes3: [u32; 13], 98 | flag5: [u32; 2], 99 | } 100 | 101 | #[derive(Serialize, Deserialize, Debug)] 102 | struct CfgHeader { 103 | flag1: [u32; 2], 104 | uncompressed_file_size: u32, 105 | output_data_with_header_size: u32, 106 | compress_chunk_size: u32, 107 | compressed_chunk_overlying_crc32: u32, 108 | cfg_header_crc32: u32, 109 | blank_bytes: [u32; 8], 110 | } 111 | 112 | #[derive(Serialize, Deserialize, Debug)] 113 | struct DataChunkHeader { 114 | before_compressed_size: u32, 115 | after_compressed_size: u32, 116 | chunk_end_offset: u32, 117 | } 118 | 119 | const READ_CHUNK_SIZE: usize = 0x10000; 120 | const MIN_ZLIB_COMPRESSED_DATA_SIZE: u32 = 9; // 以 level9 压缩一个字节，长度为9位。 其中 CMF(1) + FLG(1) + ADLER32(4) == 6。参见 https://tools.ietf.org/html/rfc1950 121 | 122 | static CTCE8_HEADER_PART1: CTCE8HeaderPart1 = CTCE8HeaderPart1 { 123 | flag1: [0x99999999, 0x44444444, 0x55555555, 0xAAAAAAAA], 124 | blank_bytes1: [0; 2], 125 | flag2: 0x04000000, 126 | blank_bytes2: [0; 8], 127 | flag3: 0x40000000, 128 | flag4: [0x02000000, 0x80000000], 129 | }; 130 | 131 | static CTCE8_HEADER_PART2: CTCE8HeaderPart2 = CTCE8HeaderPart2 { 132 | blank_bytes3: [0; 13], 133 | flag5: [0x04030201, 0], 134 | }; 135 | 136 | fn pack_to_cfg<'a>( 137 | xml_file_path: &str, 138 | ctce8_file_path: &str, 139 | device_model_string: &str, 140 | ) -> Result<(), CustomError<'a>> { 141 | use flate2::{Compress, Compression, FlushCompress}; 142 | 143 | let input_file_size = fs::metadata(&xml_file_path)?.len(); 144 | 145 | let input_file = File::open(&xml_file_path)?; 146 | let mut input_stream = BufReader::new(input_file); 147 | 148 | let output_file = File::create(&ctce8_file_path)?; 149 | let mut output_stream = BufWriter::new(output_file); 150 | 151 | let mut special_file_size: u32 = 0u32; // 最终输出 ctce8 文件大小 - 128，在 ZXHN F450 上是这样，其他地区机型未知 152 | let device_model_name_length: u32 = device_model_string.len() as u32; 153 | 154 | let header_placeholder_length = mem::size_of::() 155 | + mem::size_of_val(&special_file_size) 156 | + mem::size_of::() 157 | + mem::size_of_val(&device_model_name_length) 158 | + device_model_string.len() 159 | + mem::size_of::(); 160 | 161 | { 162 | let header_placeholder_bytes = vec![0u8; header_placeholder_length]; 163 | output_stream.write_all(&header_placeholder_bytes)?; 164 | } 165 | 166 | let mut big_endian_config = config(); 167 | big_endian_config.big_endian(); 168 | let mut little_endian_config = config(); 169 | little_endian_config.little_endian(); 170 | 171 | let data_chunk_header_size = mem::size_of::() as u32; 172 | 173 | let mut output_data_size = 0u32; // 文件头之后的数据区大小。数据区的每块数据由块头（data_chunk_header_size == 12 字节）加压缩数据组成 174 | let mut chunk_end_offset = mem::size_of::() as u32; // 注意是以 cfg header 开头作为起始地址，而不是文件初始位置 175 | let mut compressed_chunk_overlaying_crc32 = 0u32; // 压缩后的数据求 CRC32 值，以前一块压缩数据 CRC32 值为初始值，第一个初始值是 0 176 | 177 | { 178 | let mut compressed: Vec = 179 | Vec::with_capacity(READ_CHUNK_SIZE + MIN_ZLIB_COMPRESSED_DATA_SIZE as usize); 180 | let mut compressor = Compress::new(Compression::best(), true); 181 | 182 | let mut read_buffer: Vec = vec![0u8; READ_CHUNK_SIZE]; 183 | let mut read_chunk_size = READ_CHUNK_SIZE; 184 | 185 | let total_read_times: u64 = input_file_size / read_chunk_size as u64 + 1; 186 | for i in 0..total_read_times { 187 | if i == total_read_times - 1 { 188 | read_chunk_size = (input_file_size % read_chunk_size as u64) as usize; 189 | if read_chunk_size == 0 { 190 | break; 191 | } 192 | } 193 | 194 | input_stream.read_exact(&mut read_buffer[..read_chunk_size])?; 195 | 196 | compressor.compress_vec( 197 | &read_buffer[..read_chunk_size], 198 | &mut compressed, 199 | FlushCompress::Finish, 200 | )?; 201 | 202 | if read_chunk_size == READ_CHUNK_SIZE { 203 | chunk_end_offset += data_chunk_header_size + compressor.total_out() as u32; 204 | } else { 205 | chunk_end_offset = 0; // 以偏移值 0 标记接下来的数据块为最后一块 206 | } 207 | 208 | { 209 | let data_chunk_header = DataChunkHeader { 210 | before_compressed_size: compressor.total_in() as u32, 211 | after_compressed_size: compressor.total_out() as u32, 212 | chunk_end_offset: chunk_end_offset, 213 | }; 214 | 215 | let encoded: Vec = big_endian_config.serialize(&data_chunk_header)?; 216 | output_stream.write_all(&encoded)?; 217 | 218 | output_stream.write_all(&compressed)?; 219 | output_data_size += 220 | data_chunk_header_size + data_chunk_header.after_compressed_size; 221 | 222 | let mut crc32_digest = 223 | crc32::Digest::new_with_initial(crc32::IEEE, compressed_chunk_overlaying_crc32); 224 | crc32_digest.write(&compressed); 225 | compressed_chunk_overlaying_crc32 = crc32_digest.sum32(); 226 | } 227 | 228 | compressed.clear(); 229 | compressor.reset(); 230 | } 231 | } 232 | 233 | output_stream.seek(SeekFrom::Start(0))?; 234 | 235 | { 236 | let encoded: Vec = big_endian_config.serialize(&CTCE8_HEADER_PART1)?; 237 | output_stream.write_all(&encoded)?; 238 | } 239 | 240 | { 241 | special_file_size = output_data_size + header_placeholder_length as u32 - 128; 242 | let encoded: Vec = little_endian_config.serialize(&special_file_size)?; // 注意这里是用小端写入，也就这个地方特别 243 | output_stream.write_all(&encoded)?; 244 | } 245 | 246 | { 247 | let encoded: Vec = big_endian_config.serialize(&CTCE8_HEADER_PART2)?; 248 | output_stream.write_all(&encoded)?; 249 | } 250 | 251 | { 252 | let device_model_name_length: u32 = device_model_string.len() as u32; 253 | let encoded: Vec = big_endian_config.serialize(&device_model_name_length)?; 254 | output_stream.write_all(&encoded)?; 255 | 256 | output_stream 257 | .write_all(&(device_model_string.as_bytes()[..device_model_name_length as usize]))?; 258 | } 259 | 260 | { 261 | let mut cfg_header = CfgHeader { 262 | flag1: [0x01020304, 0], 263 | uncompressed_file_size: input_file_size as u32, 264 | output_data_with_header_size: output_data_size + mem::size_of::() as u32, 265 | compress_chunk_size: READ_CHUNK_SIZE as u32, 266 | compressed_chunk_overlying_crc32: compressed_chunk_overlaying_crc32, 267 | cfg_header_crc32: 0, 268 | blank_bytes: [0u32; 8], 269 | }; 270 | let encoded: Vec = big_endian_config.serialize(&cfg_header)?; 271 | 272 | let mut crc32_digest = crc32::Digest::new_with_initial(crc32::IEEE, 0u32); 273 | crc32_digest.write(&(encoded.as_slice()[..24])); 274 | cfg_header.cfg_header_crc32 = crc32_digest.sum32(); 275 | 276 | let encoded: Vec = big_endian_config.serialize(&cfg_header)?; 277 | output_stream.write_all(&encoded)?; 278 | } 279 | 280 | Ok(()) 281 | } 282 | 283 | fn unpack_to_xml<'a>(ctce8_file_path: &str, xml_file_path: &str) -> Result<(), CustomError<'a>> { 284 | use flate2::{Decompress, FlushDecompress}; 285 | 286 | let input_file_size = fs::metadata(&ctce8_file_path)?.len(); 287 | 288 | let input_file = File::open(&ctce8_file_path)?; 289 | let mut input_stream = BufReader::new(input_file); 290 | 291 | let output_file = File::create(&xml_file_path)?; 292 | let mut output_stream = BufWriter::new(output_file); 293 | 294 | let mut big_endian_config = config(); 295 | big_endian_config.big_endian(); 296 | let mut little_endian_config = config(); 297 | little_endian_config.little_endian(); 298 | 299 | { 300 | let size = mem::size_of::(); 301 | let mut read_buffer: Vec = vec![0u8; size]; 302 | input_stream.read_exact(&mut read_buffer)?; 303 | let decoded: CTCE8HeaderPart1 = big_endian_config.deserialize(&read_buffer)?; 304 | if decoded != CTCE8_HEADER_PART1 { 305 | turn!(UnpackError { 306 | reason: "文件格式不正确（CTCE8_HEADER_PART1）" 307 | }) 308 | } 309 | } 310 | 311 | let mut special_file_size: u32 = 0; 312 | { 313 | let mut read_buffer: Vec = vec![0u8; mem::size_of_val(&special_file_size)]; 314 | input_stream.read_exact(&mut read_buffer)?; 315 | special_file_size = little_endian_config.deserialize(&read_buffer)?; 316 | } 317 | 318 | if input_file_size - special_file_size as u64 != 128 { 319 | turn!(UnpackError { 320 | reason: "文件大小不正确，可能不兼容该版本 cfg 文件" 321 | }) 322 | } 323 | 324 | { 325 | let size = mem::size_of::(); 326 | let mut read_buffer: Vec = vec![0u8; size]; 327 | input_stream.read_exact(&mut read_buffer)?; 328 | let decoded: CTCE8HeaderPart2 = big_endian_config.deserialize(&read_buffer)?; 329 | if decoded != CTCE8_HEADER_PART2 { 330 | turn!(UnpackError { 331 | reason: "文件格式不正确（CTCE8_HEADER_PART2）" 332 | }) 333 | } 334 | } 335 | 336 | { 337 | let mut device_model_string_length: u32 = 0; 338 | let mut read_buffer: Vec = vec![0u8; mem::size_of_val(&device_model_string_length)]; 339 | input_stream.read_exact(&mut read_buffer)?; 340 | device_model_string_length = big_endian_config.deserialize(&read_buffer)?; 341 | 342 | let placeholder_length = mem::size_of::() 343 | + mem::size_of_val(&special_file_size) 344 | + mem::size_of::() 345 | + mem::size_of_val(&device_model_string_length) 346 | + device_model_string_length as usize 347 | + mem::size_of::(); 348 | if MIN_ZLIB_COMPRESSED_DATA_SIZE as u64 > input_file_size - placeholder_length as u64 { 349 | turn!(UnpackError { 350 | reason: "文件数据不正确，压缩的数据丢失" 351 | }) 352 | } 353 | 354 | input_stream.seek(SeekFrom::Current(device_model_string_length as i64))?; 355 | } 356 | 357 | let cfg_header: CfgHeader; 358 | { 359 | let mut read_buffer: Vec = vec![0u8; mem::size_of::()]; 360 | input_stream.read_exact(&mut read_buffer)?; 361 | cfg_header = big_endian_config.deserialize(&read_buffer)?; 362 | 363 | if cfg_header.flag1 != [0x01020304u32, 0u32] || cfg_header.blank_bytes != [0u32; 8] { 364 | turn!(UnpackError { 365 | reason: "文件格式不正确，cfc header magic位 校验失败" 366 | }) 367 | } 368 | 369 | let mut crc32_digest = crc32::Digest::new_with_initial(crc32::IEEE, 0u32); 370 | crc32_digest.write(&(read_buffer.as_slice()[..24])); 371 | if cfg_header.cfg_header_crc32 != crc32_digest.sum32() { 372 | turn!(UnpackError { 373 | reason: "文件格式不正确，cfg header crc32 校验失败" 374 | }) 375 | } 376 | } 377 | 378 | let mut decompressor = Decompress::new(true); 379 | 380 | let cfg_header_size = mem::size_of::(); 381 | let data_chunk_header_size = mem::size_of::() as u32; 382 | let mut last_chunk_end_offset = cfg_header_size as u32; 383 | let mut compressed_chunk_overlaying_crc32 = 0u32; 384 | loop { 385 | let data_chunk_header: DataChunkHeader; 386 | { 387 | let mut read_buffer: Vec = vec![0u8; data_chunk_header_size as usize]; 388 | input_stream.read_exact(&mut read_buffer)?; 389 | data_chunk_header = big_endian_config.deserialize(&read_buffer)?; 390 | } 391 | 392 | { 393 | let mut read_buffer: Vec; 394 | if data_chunk_header.chunk_end_offset != 0 { 395 | read_buffer = vec![ 396 | 0u8; 397 | (data_chunk_header.chunk_end_offset 398 | - data_chunk_header_size 399 | - last_chunk_end_offset) as usize 400 | ]; 401 | input_stream.read_exact(&mut read_buffer)?; 402 | last_chunk_end_offset = data_chunk_header.chunk_end_offset; 403 | } else { 404 | read_buffer = Vec::with_capacity(data_chunk_header.after_compressed_size as usize); 405 | input_stream.read_to_end(&mut read_buffer)?; 406 | } 407 | 408 | let mut write_buffer: Vec = 409 | Vec::with_capacity(data_chunk_header.before_compressed_size as usize); 410 | decompressor.decompress_vec( 411 | &read_buffer, 412 | &mut write_buffer, 413 | FlushDecompress::Finish, 414 | )?; 415 | 416 | output_stream.write_all(&write_buffer)?; 417 | decompressor.reset(true); 418 | 419 | let mut crc32_digest = 420 | crc32::Digest::new_with_initial(crc32::IEEE, compressed_chunk_overlaying_crc32); 421 | crc32_digest.write(&read_buffer); 422 | compressed_chunk_overlaying_crc32 = crc32_digest.sum32(); 423 | 424 | if data_chunk_header.chunk_end_offset == 0 { 425 | break; 426 | } 427 | } 428 | } 429 | 430 | if compressed_chunk_overlaying_crc32 != cfg_header.compressed_chunk_overlying_crc32 { 431 | turn!(UnpackError { 432 | reason: "文件数据不正确，压缩数据 CRC32 校验失败" 433 | }) 434 | } 435 | 436 | Ok(()) 437 | } 438 | 439 | fn main() { 440 | use clap::{App, Arg, SubCommand}; 441 | 442 | let matches = App::new("CTCE8 file pack/unpack tool") 443 | .version("0.1.0") 444 | .subcommand( 445 | SubCommand::with_name("pack") 446 | .about("Package the XML file into a CTCE8 CFG file") 447 | .arg( 448 | Arg::with_name("INPUT") 449 | .help("Sets the XML file path") 450 | .required(true) 451 | .index(1), 452 | ) 453 | .arg( 454 | Arg::with_name("OUTPUT") 455 | .help("Sets the CFG file path") 456 | .required(true) 457 | .index(2), 458 | ) 459 | .arg( 460 | Arg::with_name("MODEL") 461 | .help("Sets the device model string") 462 | .required(true) 463 | .index(3), 464 | ), 465 | ) 466 | .subcommand( 467 | SubCommand::with_name("unpack") 468 | .about("Unpack the CTCE8 CFG file into an XML file") 469 | .arg( 470 | Arg::with_name("INPUT") 471 | .help("Sets the CFG file path") 472 | .required(true) 473 | .index(1), 474 | ) 475 | .arg( 476 | Arg::with_name("OUTPUT") 477 | .help("Sets the XML file path") 478 | .required(true) 479 | .index(2), 480 | ), 481 | ) 482 | .get_matches(); 483 | 484 | if let Some(matches) = matches.subcommand_matches("pack") { 485 | if let Err(err) = pack_to_cfg( 486 | matches.value_of("INPUT").unwrap(), 487 | matches.value_of("OUTPUT").unwrap(), 488 | matches.value_of("MODEL").unwrap(), 489 | ) { 490 | println!("{:?}", err); 491 | } 492 | 493 | return; 494 | } 495 | 496 | if let Some(matches) = matches.subcommand_matches("unpack") { 497 | if let Err(err) = unpack_to_xml( 498 | matches.value_of("INPUT").unwrap(), 499 | matches.value_of("OUTPUT").unwrap(), 500 | ) { 501 | println!("{:?}", err); 502 | } 503 | 504 | return; 505 | } 506 | 507 | println!("{}", matches.usage()); 508 | println!(""); 509 | println!( 510 | "Try `{} --help' for more information.", 511 | std::env::current_exe() 512 | .unwrap_or(std::path::Path::new("ctce8_cfg_tool").to_path_buf()) 513 | .file_name() 514 | .unwrap() 515 | .to_str() 516 | .unwrap() 517 | ); 518 | } 519 | --------------------------------------------------------------------------------