// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

fn gpgv(args: ~[~str]) -> { status: int, out: ~str, err: ~str } {
    return run::program_output(~"gpgv", args);
}

fn signing_key() -> ~str {
    ~"
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: SKS 1.1.0

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=2z6P
-----END PGP PUBLIC KEY BLOCK-----
"
}

fn signing_key_fp() -> ~str {
    ~"FE79 EDB0 3DEF B0D8 27D2  6C41 0B2D 6A28 3033 6376"
}

fn supported() -> bool {
    let r = gpgv(~[~"--version"]);
    r.status == 0
}

fn init(root: &Path) {
    let p = root.push("gpg");
    if !os::path_is_dir(&p) {
        os::make_dir(&p, 0x1c0i32);
        let p = run::start_program(~"gpg", ~[~"--homedir",
                                             p.to_str(),
                                             ~"--import"]);
        p.input().write_str(signing_key());
        let s = p.finish();
        if s != 0 {
            fail ~"pgp init failed";
        }
    }
}

fn add(root: &Path, key: &Path) {
    let path = root.push("gpg");
    let p =
        run::program_output(~"gpg", ~[~"--homedir", path.to_str(),
                                      ~"--import", key.to_str()]);
    if p.status != 0 {
        fail ~"pgp add failed: " + p.out;
    }
}

fn verify(root: &Path, data: &Path, sig: &Path) -> bool {
    let path = root.push("gpg");
    let res = gpgv(~[~"--homedir", path.to_str(),
                  ~"--keyring", ~"pubring.gpg",
                  ~"--verify",
                 sig.to_str(), data.to_str()]);
    if res.status != 0 {
        return false;
    }
    return true;
}