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
use std::io;
use bytes::Bytes;
use ser::{Serializable, Deserializable, Stream, Reader, Error as ReaderError};
use {Payload, MessageResult};
pub const FILTERLOAD_MAX_FILTER_LEN: usize = 36_000;
pub const FILTERLOAD_MAX_HASH_FUNCS: usize = 50;
#[derive(Debug, PartialEq, Clone, Copy)]
#[repr(u8)]
pub enum FilterFlags {
None = 0,
All = 1,
PubKeyOnly = 2,
}
#[derive(Debug, PartialEq)]
pub struct FilterLoad {
pub filter: Bytes,
pub hash_functions: u32,
pub tweak: u32,
pub flags: FilterFlags,
}
impl Payload for FilterLoad {
fn version() -> u32 {
70001
}
fn command() -> &'static str {
"filterload"
}
fn deserialize_payload<T>(reader: &mut Reader<T>, _version: u32) -> MessageResult<Self> where T: io::Read {
let filterload = FilterLoad {
filter: try!(reader.read()),
hash_functions: try!(reader.read()),
tweak: try!(reader.read()),
flags: try!(reader.read()),
};
Ok(filterload)
}
fn serialize_payload(&self, stream: &mut Stream, _version: u32) -> MessageResult<()> {
stream
.append(&self.filter)
.append(&self.hash_functions)
.append(&self.tweak)
.append(&self.flags);
Ok(())
}
}
impl FilterFlags {
pub fn from_u8(v: u8) -> Option<Self> {
match v {
0 => Some(FilterFlags::None),
1 => Some(FilterFlags::All),
2 => Some(FilterFlags::PubKeyOnly),
_ => None,
}
}
}
impl From<FilterFlags> for u8 {
fn from(i: FilterFlags) -> Self {
i as u8
}
}
impl Serializable for FilterFlags {
fn serialize(&self, stream: &mut Stream) {
stream.append(&u8::from(*self));
}
}
impl Deserializable for FilterFlags {
fn deserialize<T>(reader: &mut Reader<T>) -> Result<Self, ReaderError> where T: io::Read {
let t: u8 = try!(reader.read());
FilterFlags::from_u8(t).ok_or(ReaderError::MalformedData)
}
}