1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

use der_parser::error::BerError;
use nom::error::{ErrorKind, ParseError};
use std::convert::From;

#[derive(Debug, PartialEq, thiserror::Error)]
pub enum SnmpError {
    #[error("Invalid message: not a DER sequence, or unexpected number of items, etc.")]
    InvalidMessage,
    #[error("Invalid version: not a number, or not in supported range (1, 2 or 3)")]
    InvalidVersion,
    #[error("Unknown or invalid PDU type")]
    InvalidPduType,
    #[error("Invalid PDU: content does not match type, or content cannot be decoded")]
    InvalidPdu,
    #[error("Invalid SNMPv3 header data")]
    InvalidHeaderData,
    #[error("Invalid SNMPv3 scoped PDU")]
    InvalidScopedPduData,
    #[error("Nom error")]
    NomError(ErrorKind),
    #[error("BER error")]
    BerError(BerError),
}

impl<I> ParseError<I> for SnmpError {
    fn from_error_kind(_input: I, kind: ErrorKind) -> Self {
        SnmpError::NomError(kind)
    }
    fn append(_input: I, kind: ErrorKind, _other: Self) -> Self {
        SnmpError::NomError(kind)
    }
}

impl From<BerError> for SnmpError {
    fn from(e: BerError) -> SnmpError {
        SnmpError::BerError(e)
    }
}

impl From<SnmpError> for nom::Err<SnmpError> {
    fn from(e: SnmpError) -> nom::Err<SnmpError> {
        nom::Err::Error(e)
    }
}