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use r2pipe::R2Pipe;
use structopt::StructOpt;
use std::path::PathBuf;
use std::time::Duration;
// we're using a custom int type here, as we want to set defaults using
// structopt which leads to a problem, as structopt only allows strings to be
// set as default values ()
#[derive(Debug)]
struct Int(u64);
impl std::str::FromStr for Int {
type Err = Box<dyn std::error::Error>;
fn from_str(s: &str) -> Result<Self, Self::Err> {
Ok(Int(s.parse::<u64>().unwrap()))
}
}
impl std::fmt::Display for Int {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(f, "{}", self.0)
}
}
// we're using a custom "Delay" type here, as we want to define the duration
// #of a game round, but structopt (as with the int stuff above) can't use time
// durations (it's time, not easy!). [derive(Debug)]
#[derive(Debug)]
struct Delay(Duration);
impl std::str::FromStr for Delay {
type Err = Box<dyn std::error::Error>;
fn from_str(s: &str) -> Result<Self, Self::Err> {
Ok(Delay(Duration::from_secs(s.parse::<u64>().unwrap())))
}
}
#[derive(Debug)]
struct Bot {
// Path defines the path to the source of the bot
path: PathBuf,
// Source defines the source of the bot after being compiled with rasm2
source: Option<String>,
// Addr defines the initial address the bot is placed at
addr: Option<u64>,
// Regs defines the state of the registers of the bot
// It is used to store the registers after each round and restore them in the
// next round when the bot's turn has come
regs: Option<String>,
}
#[derive(Debug, PartialEq, Clone)]
struct BotPaths(Vec<String>);
impl std::str::FromStr for BotPaths {
type Err = Box<dyn std::error::Error>;
fn from_str(s: &str) -> Result<Self, Self::Err> {
Ok(BotPaths(s.split(",").map(|x| x.trim().to_owned()).collect()))
}
}
// these are the options you can use, list them nicely using
// `cargo run -- --help`
#[derive(Debug, StructOpt)]
#[structopt(about = "Yet another r2wars implementation, made with <3 @ AFRA Berlin")]
struct Opt {
#[structopt(short = "a", long = "arch", default_value = "x86")]
architecture: String,
#[structopt(short = "b", long = "bits", default_value = "64")]
bits: Int,
#[structopt(long = "memsize", default_value = "4096")]
memory_size: Int,
#[structopt(long = "maxbotsize", default_value = "256")]
max_bot_size: Int,
#[structopt(long = "bots", default_value = "bots/warrior0.asm, bots/warrior1.asm")]
bots: BotPaths,
#[structopt(long = "delay", default_value = "1")]
game_round_duration_seconds: Delay,
}
fn init_arena(r2p: &mut R2Pipe, opt: &Opt) {
println!("[ ] Initializing the arena");
println!("[ ] Allocating {} bytes of memory...", opt.memory_size);
let _ = r2p.cmd(format!("malloc://{}", opt.memory_size).as_str())
.expect("could not allocate memory");
println!("[ ] General configuration...");
let _ = r2p.cmd(format!("e asm.arch = {}", opt.architecture).as_str())
.expect("could not set the desired architecture");
let _ = r2p.cmd(format!("e asm.bits = {}", opt.bits).as_str())
.expect("could not set the desired bits");
println!("[ ] ...Done");
println!("[ ] Theming...");
let _ = r2p.cmd("e scr.color = 3").expect("set color err");
let _ = r2p.cmd("e scr.color.args = true").expect("set color err");
let _ = r2p.cmd("e scr.color.bytes = true").expect("set color err");
let _ = r2p.cmd("e scr.color.grep = true").expect("set color err");
let _ = r2p.cmd("e scr.color.ops = true").expect("set color err");
let _ = r2p.cmd("e scr.color.pipe = true").expect("set color err");
let _ = r2p.cmd("e scr.bgfill = true").expect("set color err");
let _ = r2p.cmd("e scr.utf8 = true").expect("set color err");
let _ = r2p.cmd("e hex.cols = 32").expect("set hex col width err");
println!("[ ] ...Done");
println!("[ ] ESIL...");
let _ = r2p.cmd("aei").expect("init esil vm failed"); // init ESIL VM
let _ = r2p.cmd("aeim").expect("init esil vm stack failed"); // init ESIL VM stack
println!("[ ] ...Done");
}
fn build_bots(opt: &Opt, bots: &mut Vec<Bot>) {
for bot_path in opt.bots.0.clone().into_iter() {
bots.push(
build_bot(PathBuf::from(bot_path))
.expect("could not build a bot!")
)
}
}
fn build_bot(bot_path: PathBuf) -> Result<Bot, ()> {
let mut r2p = r2pipe::open_pipe!(Some("--").to_owned()).expect("could not open r2pipe");
let source = r2p.cmd(format!("rasm2 -a {} -b {} -f {:?}", "x86", "32", bot_path).as_str())
.expect("failed to build the bot!");
let new_bot: Bot = Bot {
path: bot_path,
source: Some(source),
addr: None,
regs: None,
};
Ok(new_bot)
}
fn main() -> Result<(), Box<dyn std::error::Error>> {
let mut bots: Vec<Bot> = vec![];
let opt = Opt::from_args();
println!("{:?}", opt.architecture);
println!("{:?}", opt.bits);
println!("{:?}", opt.memory_size);
println!("{:?}", opt.max_bot_size);
println!("{:?}", opt.bots);
println!("{:?}", opt.game_round_duration_seconds);
let path = Some("/Users/emilehansmaennel/Documents/CTF/2023/indore/Lengan/main_fixed".to_owned());
let mut r2p = r2pipe::open_pipe!(path).expect("could not open r2pipe");
init_arena(&mut r2p, &opt);
build_bots(&opt, &mut bots);
for bot in bots {
println!("{:?}", bot);
}
// println!("{}", r2p.cmd("?e Hello World").expect("could not exec command"));
// println!("{}", r2p.cmd("aaa").expect("could not exec command"));
// println!("---");
// println!("{}", r2p.cmd("afl").expect("could not exec command"));
// println!("---");
r2p.close();
Ok(())
}
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