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
157
158
159
160
161
162
|
pub use std::io;
use async_trait::async_trait;
use futures::future::{AbortHandle, Aborted, abortable};
use std::net::{Ipv4Addr, SocketAddr};
use tokio::task::JoinHandle;
use shadowsocks_service::{
config::{
Config, ConfigType, LocalConfig, LocalInstanceConfig, ProtocolType, ServerInstanceConfig,
},
local,
shadowsocks::{
ServerAddr,
config::{Mode, ServerConfig},
},
};
use super::{Error, ProxyMonitor, ProxyMonitorCloseHandle};
use talpid_types::{ErrorExt, net::proxy::Shadowsocks};
pub struct ShadowsocksProxyMonitor {
port: u16,
server_join_handle: Option<JoinHandle<Result<io::Result<()>, Aborted>>>,
server_abort_handle: AbortHandle,
}
impl ShadowsocksProxyMonitor {
pub async fn start(
settings: &Shadowsocks,
#[cfg(target_os = "linux")] fwmark: u32,
) -> super::Result<Self> {
Self::start_inner(
settings,
#[cfg(target_os = "linux")]
fwmark,
)
.await
.map_err(Error::Io)
}
async fn start_inner(
settings: &Shadowsocks,
#[cfg(target_os = "linux")] fwmark: u32,
) -> io::Result<Self> {
let mut config = Config::new(ConfigType::Local);
config.fast_open = true;
let mut local = LocalConfig::new(ProtocolType::Socks);
local.mode = Mode::TcpOnly;
local.addr = Some(ServerAddr::SocketAddr(SocketAddr::from((
Ipv4Addr::LOCALHOST,
0,
))));
config
.local
.push(LocalInstanceConfig::with_local_config(local));
let server = ServerConfig::new(
settings.endpoint,
settings.password.clone(),
settings
.cipher
.parse()
.map_err(|_| io::Error::other(format!("Invalid cipher: {}", settings.cipher)))?,
);
config
.server
.push(ServerInstanceConfig::with_server_config(server));
#[cfg(target_os = "linux")]
{
config.outbound_fwmark = Some(fwmark);
}
let srv = local::Server::new(config).await?;
let listener_addr = Self::get_listener_addr(&srv)?;
let (fut, server_abort_handle) = abortable(async move {
let result = srv.run().await;
if let Err(error) = &result {
log::error!(
"{}",
error.display_chain_with_msg("sslocal stopped with an error")
);
}
result
});
let server_join_handle = tokio::spawn(fut);
Ok(Self {
port: listener_addr.port(),
server_join_handle: Some(server_join_handle),
server_abort_handle,
})
}
fn get_listener_addr(srv: &local::Server) -> io::Result<SocketAddr> {
let no_addr_err = || io::Error::other("Missing listener address");
let socks_server = srv.socks_servers().first().ok_or_else(no_addr_err)?;
socks_server
.tcp_server()
.ok_or_else(no_addr_err)?
.local_addr()
}
}
impl Drop for ShadowsocksProxyMonitor {
fn drop(&mut self) {
self.server_abort_handle.abort();
}
}
#[async_trait]
impl ProxyMonitor for ShadowsocksProxyMonitor {
fn close_handle(&mut self) -> Box<dyn ProxyMonitorCloseHandle> {
Box::new(ShadowsocksProxyMonitorCloseHandle {
server_abort_handle: self.server_abort_handle.clone(),
})
}
async fn wait(mut self: Box<Self>) -> super::Result<()> {
if let Some(join_handle) = self.server_join_handle.take() {
match join_handle.await {
Ok(Err(Aborted)) => Ok(()),
Err(join_err) if join_err.is_cancelled() => Ok(()),
Err(_) => Err(Error::UnexpectedExit(
"Shadowsocks task panicked".to_string(),
)),
Ok(Ok(result)) => match result {
Ok(()) => Err(Error::UnexpectedExit("Exited without error".to_string())),
Err(error) => Err(Error::UnexpectedExit(format!(
"Error: {}",
error.display_chain()
))),
},
}
} else {
Ok(())
}
}
fn port(&self) -> u16 {
self.port
}
}
struct ShadowsocksProxyMonitorCloseHandle {
server_abort_handle: AbortHandle,
}
impl ProxyMonitorCloseHandle for ShadowsocksProxyMonitorCloseHandle {
fn close(self: Box<Self>) -> super::Result<()> {
self.server_abort_handle.abort();
Ok(())
}
}
|
