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|
use std::{
fs::File,
io::{Read, Seek, SeekFrom},
path::{Path, PathBuf},
};
use anyhow::{anyhow, Result};
use clap::Parser;
use rockfile::boot::{
RkBootEntry, RkBootEntryBytes, RkBootHeader, RkBootHeaderBytes, RkBootHeaderEntry,
};
fn parse_entry(header: RkBootHeaderEntry, name: &str, file: &mut File) -> Result<()> {
for i in 0..header.count {
let mut entry: RkBootEntryBytes = [0; 57];
file.seek(SeekFrom::Start(
header.offset as u64 + (header.size * i) as u64,
))?;
file.read_exact(&mut entry)?;
let entry = RkBootEntry::from_bytes(&entry);
println!("== {} Entry {} ==", name, i);
println!("Name: {}", String::from_utf16(entry.name.as_slice())?);
println!("Raw: {:?}", entry);
let mut data = vec![0; entry.data_size as usize];
file.seek(SeekFrom::Start(entry.data_offset as u64))?;
file.read_exact(&mut data)?;
let crc = crc::Crc::<u16>::new(&crc::CRC_16_IBM_3740);
println!("Data CRC: {:x}", crc.checksum(&data));
}
Ok(())
}
fn parse_boot(path: &Path) -> Result<()> {
let mut file = File::open(path)?;
let mut header: RkBootHeaderBytes = [0; 102];
file.read_exact(&mut header)?;
let header =
RkBootHeader::from_bytes(&header).ok_or_else(|| anyhow!("Failed to parse header"))?;
println!("Raw Header: {:?}", header);
println!(
"chip: {:?} - {}",
header.supported_chip,
String::from_utf8_lossy(&header.supported_chip)
);
parse_entry(header.entry_471, "0x471", &mut file)?;
parse_entry(header.entry_472, "0x472", &mut file)?;
parse_entry(header.entry_loader, "loader", &mut file)?;
Ok(())
}
#[derive(Debug, clap::Subcommand)]
enum Command {
BootFile { path: PathBuf },
}
#[derive(clap::Parser)]
struct Opts {
#[command(subcommand)]
command: Command,
}
fn main() -> Result<()> {
let opt = Opts::parse();
// Commands that don't talk a device
match opt.command {
Command::BootFile { path } => parse_boot(&path),
}
}
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