snmp 0.2.2

SNMP client library
Documentation 
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use super::{AsnReader, SnmpError};
use super::{pdu, snmp};

#[test]
fn build_getnext_pdu() {
    let mut pdu = pdu::Buf::default();
    pdu::build_getnext(b"tyS0n43d",
                       1251699618,
                       &[1, 3, 6, 1, 2, 1, 1, 1, 0],
                       &mut pdu);

    let expected = &[0x30, 0x2b, 0x02, 0x01, 0x01, 0x04, 0x08, 0x74, 0x79, 0x53, 0x30, 0x6e,
                     0x34, 0x33, 0x64, 0xa1, 0x1c, 0x02, 0x04, 0x4a, 0x9b, 0x6b, 0xa2, 0x02,
                     0x01, 0x00, 0x02, 0x01, 0x00, 0x30, 0x0e, 0x30, 0x0c, 0x06, 0x08, 0x2b,
                     0x06, 0x01, 0x02, 0x01, 0x01, 0x01, 0x00, 0x05, 0x00];

    println!("{:?}", pdu);
    println!("{:?}", &expected[..]);

    assert_eq!(&pdu[..], &expected[..]);
}

#[test]
fn asn_read_byte() {
    let bytes = [1,2,3,4];
    let mut reader = AsnReader::from_bytes(&bytes[..]);
    let a = reader.read_byte().unwrap();
    let b = reader.read_byte().unwrap();
    let c = reader.read_byte().unwrap();
    let d = reader.read_byte().unwrap();
    assert_eq!(&[a,b,c,d], &bytes[..]);
    assert_eq!(reader.read_byte(), Err(SnmpError::AsnEof));
}


#[test]
fn asn_parse_getnext_pdu() {
    let pdu = &[0x30, 0x2b, 0x02, 0x01, 0x01, 0x04, 0x08, 0x74, 0x79, 0x53, 0x30, 0x6e,
                0x34, 0x33, 0x64, 0xa1, 0x1c, 0x02, 0x04, 0x4a, 0x9b, 0x6b, 0xa2, 0x02,
                0x01, 0x00, 0x02, 0x01, 0x00, 0x30, 0x0e, 0x30, 0x0c, 0x06, 0x08, 0x2b,
                0x06, 0x01, 0x02, 0x01, 0x01, 0x01, 0x00, 0x05, 0x00];
    let mut reader = AsnReader::from_bytes(&pdu[..]);
    reader.read_asn_sequence(|rdr| {
        let version = rdr.read_asn_integer()?;
        assert_eq!(version, snmp::VERSION_2 as i64);
        let community = rdr.read_asn_octetstring()?;
        assert_eq!(community, b"tyS0n43d");
        println!("version: {}", version);
        let msg_ident = rdr.peek_byte()?;
        println!("msg_ident: {}", msg_ident);
        assert_eq!(msg_ident, snmp::MSG_GET_NEXT);
        rdr.read_constructed(msg_ident, |rdr| {
            let req_id = rdr.read_asn_integer()?;
            let error_status = rdr.read_asn_integer()?;
            let error_index = rdr.read_asn_integer()?;
            println!("req_id: {}, error_status: {}, error_index: {}",
                     req_id, error_status, error_index);
            assert_eq!(req_id, 1251699618);
            assert_eq!(error_status, 0);
            assert_eq!(error_index, 0);
            rdr.read_asn_sequence(|rdr| {
                rdr.read_asn_sequence(|rdr| {
                    let name = rdr.read_asn_objectidentifier()?;
                    let expected = [1, 3, 6, 1, 2, 1, 1, 1, 0];
                    println!("name: {}", name);
                    assert_eq!(name, &expected[..]);
                    rdr.read_asn_null()
                })
            })
        })
    }).unwrap();
}