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
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
use std::hash::{Hash, Hasher};
use std::cmp::Ordering;

use failure;

use crate::packet::Tag;
use crate::packet;
use crate::Packet;

/// Holds an unknown packet.
///
/// This is used by the parser to hold packets that it doesn't know
/// how to process rather than abort.
///
/// This packet effectively holds a binary blob.
#[derive(Debug)]
pub struct Unknown {
    /// CTB packet header fields.
    pub(crate) common: packet::Common,
    /// Packet tag.
    tag: Tag,
    /// Error that caused parsing or processing to abort.
    error: failure::Error,
}

impl Eq for Unknown {}

impl PartialEq for Unknown {
    fn eq(&self, other: &Unknown) -> bool {
        self.cmp(other) == Ordering::Equal
    }
}

impl PartialOrd for Unknown
{
    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
        Some(self.cmp(other))
    }
}

impl Ord for Unknown
{
    fn cmp(&self, other: &Unknown) -> Ordering {
        // An unknown packet cannot have children.
        assert!(self.common.children.is_none());
        assert!(other.common.children.is_none());

        match self.tag.cmp(&other.tag) {
            Ordering::Equal => self.common.body().cmp(&other.common.body()),
            o => o,
        }
    }
}

impl Hash for Unknown {
    fn hash<H: Hasher>(&self, state: &mut H) {
        self.common.hash(state);
        self.tag.hash(state);
    }
}

impl Clone for Unknown {
    fn clone(&self) -> Self {
        Unknown {
            common: self.common.clone(),
            tag: self.tag,
            error: failure::err_msg(format!("{}", self.error)),
        }
    }
}


impl Unknown {
    /// Returns a new `Unknown` packet.
    pub fn new(tag: Tag, error: failure::Error) -> Self {
        Unknown {
            common: Default::default(),
            tag: tag,
            error: error,
        }
    }

    /// Gets the unknown packet's tag.
    pub fn tag(&self) -> Tag {
        self.tag
    }

    /// Sets the unknown packet's tag.
    pub fn set_tag(&mut self, tag: Tag) -> Tag {
        ::std::mem::replace(&mut self.tag, tag)
    }

    /// Gets the unknown packet's error.
    ///
    /// This is the error that caused parsing or processing to abort.
    pub fn error(&self) -> &failure::Error {
        &self.error
    }

    /// Sets the unknown packet's error.
    ///
    /// This is the error that caused parsing or processing to abort.
    pub fn set_error(&mut self, error: failure::Error) -> failure::Error {
        ::std::mem::replace(&mut self.error, error)
    }

    /// Sets the packet's contents.
    ///
    /// This is the raw packet content not include the CTB and length
    /// information, and not encoded using something like OpenPGP's
    /// partial body encoding.
    pub fn body(&self) -> Option<&[u8]> {
        self.common.body.as_ref().map(|b| b.as_slice())
    }

    /// Sets the packet's contents.
    ///
    /// This is the raw packet content not include the CTB and length
    /// information, and not encoded using something like OpenPGP's
    /// partial body encoding.
    pub fn set_body(&mut self, data: Vec<u8>) -> Option<Vec<u8>> {
        ::std::mem::replace(&mut self.common.body, Some(data))
    }
}

impl From<Unknown> for Packet {
    fn from(s: Unknown) -> Self {
        Packet::Unknown(s)
    }
}