extcap/
error.rs

1use std::error::Error;
2use std::fmt;
3use std::io;
4
5#[derive(Debug)]
6enum ExtcapErrorKind {
7    Io,
8    Clap,
9    Pcap,
10    MissingInterface,
11    InvalidInterface,
12    UnknownStepRequested,
13    UserError,
14}
15
16/// Extcap specific error
17#[derive(Debug)]
18pub struct ExtcapError {
19    kind: ExtcapErrorKind,
20    message: String,
21}
22
23impl ExtcapError {
24    pub(crate) fn missing_interface() -> Self {
25        ExtcapError {
26            kind: ExtcapErrorKind::MissingInterface,
27            message: "Missing interface".to_string(),
28        }
29    }
30
31    pub(crate) fn invalid_interface(interface: &str) -> Self {
32        ExtcapError {
33            kind: ExtcapErrorKind::InvalidInterface,
34            message: format!("Invalid interface: {}", interface),
35        }
36    }
37
38    pub(crate) fn unknown_step() -> Self {
39        ExtcapError {
40            kind: ExtcapErrorKind::UnknownStepRequested,
41            message: "Unknown step requested".to_string(),
42        }
43    }
44
45    /// Create user error
46    pub fn user_error<T: ToString>(msg: T) -> Self {
47        ExtcapError {
48            kind: ExtcapErrorKind::UserError,
49            message: msg.to_string(),
50        }
51    }
52}
53
54impl Error for ExtcapError {}
55
56impl fmt::Display for ExtcapError {
57    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
58        write!(f, "{:?}:{}", self.kind, self.message)
59    }
60}
61
62impl From<io::Error> for ExtcapError {
63    fn from(error: io::Error) -> Self {
64        ExtcapError {
65            kind: ExtcapErrorKind::Io,
66            message: error.to_string(),
67        }
68    }
69}
70
71impl From<clap::Error> for ExtcapError {
72    fn from(error: clap::Error) -> Self {
73        ExtcapError {
74            kind: ExtcapErrorKind::Clap,
75            message: format!("{:?}: {}", error.kind(), error),
76        }
77    }
78}
79
80impl From<pcap_file::PcapError> for ExtcapError {
81    fn from(error: pcap_file::PcapError) -> Self {
82        ExtcapError {
83            kind: ExtcapErrorKind::Pcap,
84            message: error.to_string(),
85        }
86    }
87}
extcap/error.rs

extcap/
error.rs
