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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
use std::io::IoSlice;
use std::pin::Pin;
use std::sync::Arc;
use std::task::{Context, Poll};
use pin_project_lite::pin_project;
use tokio::io::{self, AsyncRead, AsyncWrite, ReadBuf, ReadHalf, WriteHalf};
use tokio_rustls::server::TlsStream;
use tokio_rustls::{rustls::ServerConfig, TlsAcceptor};
use crate::commands::ClientHandshake;
use crate::myc::constants::CapabilityFlags;
use crate::packet_reader::PacketReader;
use crate::packet_writer::PacketWriter;
use crate::{AsyncMysqlIntermediary, AsyncMysqlShim, IntermediaryOptions};
pub async fn plain_run_with_options<B, R, W>(
shim: B,
writer: W,
opts: IntermediaryOptions,
init_params: (ClientHandshake, u8, CapabilityFlags, PacketReader<R>),
) -> Result<(), B::Error>
where
B: AsyncMysqlShim<W> + Send + Sync,
R: AsyncRead + Send + Unpin,
W: AsyncWrite + Send + Unpin,
{
let (handshake, seq, client_capabilities, reader) = init_params;
let reader = PacketReader::new(reader);
let writer = PacketWriter::new(writer);
let process_use_statement_on_query = opts.process_use_statement_on_query;
let mut mi = AsyncMysqlIntermediary {
client_capabilities,
process_use_statement_on_query,
shim,
reader,
writer,
};
mi.init_after_ssl(handshake, seq).await?;
mi.run().await
}
pub async fn secure_run_with_options<B, R, W>(
shim: B,
writer: W,
opts: IntermediaryOptions,
tls_config: Arc<ServerConfig>,
init_params: (ClientHandshake, u8, CapabilityFlags, PacketReader<R>),
) -> Result<(), B::Error>
where
B: AsyncMysqlShim<WriteHalf<TlsStream<Duplex<PacketReader<R>, W>>>> + Send + Sync,
R: AsyncRead + Send + Unpin,
W: AsyncWrite + Send + Unpin,
{
let (handshake, seq, client_capabilities, reader) = init_params;
let (reader, writer) = switch_to_tls(tls_config, reader, writer).await?;
let reader = PacketReader::new(reader);
let writer = PacketWriter::new(writer);
let process_use_statement_on_query = opts.process_use_statement_on_query;
let mut mi = AsyncMysqlIntermediary {
client_capabilities,
process_use_statement_on_query,
shim,
reader,
writer,
};
mi.init_after_ssl(handshake, seq).await?;
mi.run().await
}
pub async fn switch_to_tls<R: AsyncRead + Send + Unpin, W: AsyncWrite + Send + Unpin>(
config: Arc<ServerConfig>,
reader: R,
writer: W,
) -> std::io::Result<(
ReadHalf<TlsStream<Duplex<R, W>>>,
WriteHalf<TlsStream<Duplex<R, W>>>,
)> {
let stream = Duplex::new(reader, writer);
let acceptor = TlsAcceptor::from(config);
let stream = acceptor.accept(stream).await?;
let (r, w) = tokio::io::split(stream);
Ok((r, w))
}
pin_project! {
#[derive(Clone, Debug)]
pub struct Duplex<R, W> {
#[pin]
reader: R,
#[pin]
writer: W,
}
}
impl<R, W> Duplex<R, W> {
pub fn new(reader: R, writer: W) -> Self {
Self { reader, writer }
}
}
impl<R: AsyncRead, W> AsyncRead for Duplex<R, W> {
fn poll_read(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &mut ReadBuf<'_>,
) -> Poll<io::Result<()>> {
AsyncRead::poll_read(self.project().reader, cx, buf)
}
}
impl<R, W: AsyncWrite> AsyncWrite for Duplex<R, W> {
fn poll_write(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
buf: &[u8],
) -> Poll<io::Result<usize>> {
AsyncWrite::poll_write(self.project().writer, cx, buf)
}
fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<()>> {
AsyncWrite::poll_flush(self.project().writer, cx)
}
fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), io::Error>> {
AsyncWrite::poll_shutdown(self.project().writer, cx)
}
fn poll_write_vectored(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
bufs: &[IoSlice<'_>],
) -> Poll<Result<usize, io::Error>> {
AsyncWrite::poll_write_vectored(self.project().writer, cx, bufs)
}
fn is_write_vectored(&self) -> bool {
AsyncWrite::is_write_vectored(&self.writer)
}
}