dgst.rs

dgst.rs

extern crate webclient;

use std::io::Reader;
use std::io::stdin;
use webclient::digest::types::HashAlgorithm;

pub fn hash_algorithm_from_lower(name: &str) -> Option<Box<HashAlgorithm+'static>> {
    match name {
        "-md5" => Some(box webclient::digest::md5::md5_new() as Box<HashAlgorithm>),
        "-sha1" => Some(box webclient::digest::sha1::sha1_new() as Box<HashAlgorithm>),
        "-sha224" => Some(box webclient::digest::sha2::sha224_new() as Box<HashAlgorithm>),
        "-sha256" => Some(box webclient::digest::sha2::sha256_new() as Box<HashAlgorithm>),
        "-sha384" => Some(box webclient::digest::sha2::sha384_new() as Box<HashAlgorithm>),
        "-sha512" => Some(box webclient::digest::sha2::sha512_new() as Box<HashAlgorithm>),
        "-sha512224" => Some(box webclient::digest::sha2::sha512224_new() as Box<HashAlgorithm>),
        "-sha512256" => Some(box webclient::digest::sha2::sha512256_new() as Box<HashAlgorithm>),
        _ => None
    }
}

fn main() {
    // get message
    let mut reader = stdin();
    let message: Vec<u8> = reader.read_to_end().unwrap();

    // get hash algorithm
    let args = std::os::args();
    let command: &str = args[1].as_slice();
    let mut hasher = hash_algorithm_from_lower(command).unwrap();

    // compute hash
    let bytes = hasher.hash(message);
    for byte in bytes.into_iter() {
        print!("{:02x}", byte);
    }
    println!("");
}

error

$ cargo build
   Compiling webtools v0.0.1 (file:///Users/ajr/Workspaces/Rust/my/rust-webtools)
   
# :)