Major re-factor, add XMPP-over-QUIC and outgoing forward support
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moparisthebest/xmpp-proxy/pipeline/head This commit looks good
Details
This commit is contained in:
parent
6a41f503d6
commit
377fbe0b73
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@ -6,6 +6,17 @@ version = "1.0.40"
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|
||||
[[package]]
|
||||
name = "schannel"
|
||||
version = "0.1.19"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8f05ba609c234e60bee0d547fe94a4c7e9da733d1c962cf6e59efa4cd9c8bc75"
|
||||
dependencies = [
|
||||
"lazy_static",
|
||||
"winapi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "scopeguard"
|
||||
version = "1.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
|
||||
|
||||
[[package]]
|
||||
name = "sct"
|
||||
version = "0.6.1"
|
||||
|
|
@ -312,6 +662,29 @@ dependencies = [
|
|||
"untrusted",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "security-framework"
|
||||
version = "2.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3670b1d2fdf6084d192bc71ead7aabe6c06aa2ea3fbd9cc3ac111fa5c2b1bd84"
|
||||
dependencies = [
|
||||
"bitflags",
|
||||
"core-foundation",
|
||||
"core-foundation-sys",
|
||||
"libc",
|
||||
"security-framework-sys",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "security-framework-sys"
|
||||
version = "2.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3676258fd3cfe2c9a0ec99ce3038798d847ce3e4bb17746373eb9f0f1ac16339"
|
||||
dependencies = [
|
||||
"core-foundation-sys",
|
||||
"libc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "serde"
|
||||
version = "1.0.125"
|
||||
|
|
@ -338,6 +711,23 @@ version = "0.4.2"
|
|||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
|
||||
|
||||
[[package]]
|
||||
name = "smallvec"
|
||||
version = "1.6.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
|
||||
|
||||
[[package]]
|
||||
name = "socket2"
|
||||
version = "0.3.19"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "122e570113d28d773067fab24266b66753f6ea915758651696b6e35e49f88d6e"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"libc",
|
||||
"winapi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "spin"
|
||||
version = "0.5.2"
|
||||
|
|
@ -355,6 +745,41 @@ dependencies = [
|
|||
"unicode-xid",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "thiserror"
|
||||
version = "1.0.24"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e0f4a65597094d4483ddaed134f409b2cb7c1beccf25201a9f73c719254fa98e"
|
||||
dependencies = [
|
||||
"thiserror-impl",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "thiserror-impl"
|
||||
version = "1.0.24"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7765189610d8241a44529806d6fd1f2e0a08734313a35d5b3a556f92b381f3c0"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tinyvec"
|
||||
version = "1.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5b5220f05bb7de7f3f53c7c065e1199b3172696fe2db9f9c4d8ad9b4ee74c342"
|
||||
dependencies = [
|
||||
"tinyvec_macros",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tinyvec_macros"
|
||||
version = "0.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
|
||||
|
||||
[[package]]
|
||||
name = "tokio"
|
||||
version = "1.5.0"
|
||||
|
|
@ -402,6 +827,107 @@ dependencies = [
|
|||
"serde",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tracing"
|
||||
version = "0.1.25"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "01ebdc2bb4498ab1ab5f5b73c5803825e60199229ccba0698170e3be0e7f959f"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"pin-project-lite",
|
||||
"tracing-attributes",
|
||||
"tracing-core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tracing-attributes"
|
||||
version = "0.1.15"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c42e6fa53307c8a17e4ccd4dc81cf5ec38db9209f59b222210375b54ee40d1e2"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tracing-core"
|
||||
version = "0.1.17"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f50de3927f93d202783f4513cda820ab47ef17f624b03c096e86ef00c67e6b5f"
|
||||
dependencies = [
|
||||
"lazy_static",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "trust-dns-proto"
|
||||
version = "0.20.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "952a078337565ba39007de99b151770f41039253a31846f0a3d5cd5a4ac8eedf"
|
||||
dependencies = [
|
||||
"async-trait",
|
||||
"cfg-if",
|
||||
"data-encoding",
|
||||
"enum-as-inner",
|
||||
"futures-channel",
|
||||
"futures-io",
|
||||
"futures-util",
|
||||
"idna",
|
||||
"ipnet",
|
||||
"lazy_static",
|
||||
"log",
|
||||
"rand",
|
||||
"smallvec",
|
||||
"thiserror",
|
||||
"tinyvec",
|
||||
"tokio",
|
||||
"url",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "trust-dns-resolver"
|
||||
version = "0.20.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "da9c97f7d103e0f94dbe384a57908833505ae5870126492f166821b7cf685589"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"futures-util",
|
||||
"ipconfig",
|
||||
"lazy_static",
|
||||
"log",
|
||||
"lru-cache",
|
||||
"parking_lot",
|
||||
"resolv-conf",
|
||||
"smallvec",
|
||||
"thiserror",
|
||||
"tokio",
|
||||
"trust-dns-proto",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-bidi"
|
||||
version = "0.3.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "eeb8be209bb1c96b7c177c7420d26e04eccacb0eeae6b980e35fcb74678107e0"
|
||||
dependencies = [
|
||||
"matches",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-normalization"
|
||||
version = "0.1.17"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "07fbfce1c8a97d547e8b5334978438d9d6ec8c20e38f56d4a4374d181493eaef"
|
||||
dependencies = [
|
||||
"tinyvec",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-segmentation"
|
||||
version = "1.7.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "bb0d2e7be6ae3a5fa87eed5fb451aff96f2573d2694942e40543ae0bbe19c796"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-xid"
|
||||
version = "0.2.1"
|
||||
|
|
@ -414,6 +940,24 @@ version = "0.7.1"
|
|||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
|
||||
|
||||
[[package]]
|
||||
name = "url"
|
||||
version = "2.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9ccd964113622c8e9322cfac19eb1004a07e636c545f325da085d5cdde6f1f8b"
|
||||
dependencies = [
|
||||
"form_urlencoded",
|
||||
"idna",
|
||||
"matches",
|
||||
"percent-encoding",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasi"
|
||||
version = "0.10.2+wasi-snapshot-preview1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
|
||||
|
||||
[[package]]
|
||||
name = "wasm-bindgen"
|
||||
version = "0.2.73"
|
||||
|
|
@ -488,6 +1032,21 @@ dependencies = [
|
|||
"untrusted",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "webpki-roots"
|
||||
version = "0.21.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "aabe153544e473b775453675851ecc86863d2a81d786d741f6b76778f2a48940"
|
||||
dependencies = [
|
||||
"webpki",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "widestring"
|
||||
version = "0.4.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c168940144dd21fd8046987c16a46a33d5fc84eec29ef9dcddc2ac9e31526b7c"
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.3.9"
|
||||
|
|
@ -510,6 +1069,15 @@ version = "0.4.0"
|
|||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
|
||||
[[package]]
|
||||
name = "winreg"
|
||||
version = "0.6.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b2986deb581c4fe11b621998a5e53361efe6b48a151178d0cd9eeffa4dc6acc9"
|
||||
dependencies = [
|
||||
"winapi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xmpp-proxy"
|
||||
version = "1.0.0"
|
||||
|
|
@ -517,9 +1085,13 @@ dependencies = [
|
|||
"anyhow",
|
||||
"die",
|
||||
"futures",
|
||||
"lazy_static",
|
||||
"quinn",
|
||||
"serde",
|
||||
"serde_derive",
|
||||
"tokio",
|
||||
"tokio-rustls",
|
||||
"toml",
|
||||
"trust-dns-resolver",
|
||||
"webpki-roots",
|
||||
]
|
||||
|
|
|
|||
27
Cargo.toml
27
Cargo.toml
|
|
@ -24,7 +24,30 @@ toml = "0.5"
|
|||
serde_derive = "1.0"
|
||||
serde = { version = "1.0", features = ["derive"] }
|
||||
futures = "0.3"
|
||||
die = "0.2.0"
|
||||
die = "0.2"
|
||||
anyhow = "1.0"
|
||||
tokio = { version = "1.4", features = ["net", "rt", "rt-multi-thread", "macros", "io-util"] }
|
||||
tokio-rustls = "0.22"
|
||||
|
||||
# incoming deps
|
||||
tokio-rustls = { version = "0.22", optional = true }
|
||||
|
||||
# outgoing deps
|
||||
lazy_static = { version = "1.4", optional = true }
|
||||
webpki-roots = { version = "0.21", optional = true }
|
||||
trust-dns-resolver = { version = "0.20", optional = true }
|
||||
#trust-dns-resolver = { version = "0.20", features = ["dns-over-rustls"], optional = true }
|
||||
|
||||
# quic deps
|
||||
quinn = { version = "0.7", optional = true }
|
||||
|
||||
[features]
|
||||
default = ["incoming", "outgoing", "quic"]
|
||||
#default = ["incoming", "outgoing"]
|
||||
#default = ["incoming", "quic"]
|
||||
#default = ["outgoing", "quic"]
|
||||
#default = ["quic"]
|
||||
#default = ["outgoing"]
|
||||
#default = ["incoming"]
|
||||
incoming = ["tokio-rustls"]
|
||||
outgoing = ["trust-dns-resolver", "webpki-roots", "lazy_static", "tokio-rustls"]
|
||||
quic = ["quinn"]
|
||||
|
|
|
|||
268
src/main.rs
268
src/main.rs
|
|
@ -1,7 +1,7 @@
|
|||
use std::ffi::OsString;
|
||||
use std::fs::File;
|
||||
use std::io;
|
||||
use std::io::{BufReader, Read};
|
||||
use std::io::{BufReader, Read, Write};
|
||||
use std::iter::Iterator;
|
||||
use std::net::SocketAddr;
|
||||
use std::path::Path;
|
||||
|
|
@ -11,13 +11,16 @@ use die::Die;
|
|||
|
||||
use serde_derive::Deserialize;
|
||||
|
||||
use tokio::io::{AsyncReadExt, AsyncWriteExt};
|
||||
use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt};
|
||||
use tokio::net::TcpListener;
|
||||
use tokio::task::JoinHandle;
|
||||
|
||||
use tokio_rustls::rustls::internal::pemfile::{certs, pkcs8_private_keys};
|
||||
use tokio_rustls::rustls::{NoClientAuth, ServerConfig};
|
||||
use tokio_rustls::TlsAcceptor;
|
||||
#[cfg(feature = "incoming")]
|
||||
use tokio_rustls::{
|
||||
rustls::internal::pemfile::{certs, pkcs8_private_keys},
|
||||
rustls::{NoClientAuth, ServerConfig},
|
||||
TlsAcceptor,
|
||||
};
|
||||
|
||||
use anyhow::{bail, Result};
|
||||
|
||||
|
|
@ -27,9 +30,30 @@ use slicesubsequence::*;
|
|||
mod stanzafilter;
|
||||
use stanzafilter::*;
|
||||
|
||||
#[cfg(feature = "quic")]
|
||||
mod quic;
|
||||
#[cfg(feature = "quic")]
|
||||
use crate::quic::*;
|
||||
|
||||
mod tls;
|
||||
use crate::tls::*;
|
||||
|
||||
#[cfg(feature = "outgoing")]
|
||||
mod outgoing;
|
||||
#[cfg(feature = "outgoing")]
|
||||
use crate::outgoing::*;
|
||||
|
||||
#[cfg(feature = "outgoing")]
|
||||
mod srv;
|
||||
#[cfg(feature = "outgoing")]
|
||||
use crate::srv::*;
|
||||
|
||||
const IN_BUFFER_SIZE: usize = 8192;
|
||||
const OUT_BUFFER_SIZE: usize = 8192;
|
||||
|
||||
const ALPN_XMPP_CLIENT: &[&[u8]] = &[b"xmpp-client"];
|
||||
const ALPN_XMPP_SERVER: &[&[u8]] = &[b"xmpp-server"];
|
||||
|
||||
#[cfg(debug_assertions)]
|
||||
fn c2s(is_c2s: bool) -> &'static str {
|
||||
if is_c2s {
|
||||
|
|
@ -55,7 +79,9 @@ macro_rules! debug {
|
|||
struct Config {
|
||||
tls_key: String,
|
||||
tls_cert: String,
|
||||
listen: Vec<String>,
|
||||
listen: Option<Vec<String>>,
|
||||
quic_listen: Option<Vec<String>>,
|
||||
outgoing_listen: Option<Vec<String>>,
|
||||
max_stanza_size_bytes: usize,
|
||||
s2s_target: String,
|
||||
c2s_target: String,
|
||||
|
|
@ -63,12 +89,11 @@ struct Config {
|
|||
}
|
||||
|
||||
#[derive(Clone)]
|
||||
struct CloneableConfig {
|
||||
pub struct CloneableConfig {
|
||||
max_stanza_size_bytes: usize,
|
||||
s2s_target: String,
|
||||
c2s_target: String,
|
||||
proxy: bool,
|
||||
acceptor: TlsAcceptor,
|
||||
}
|
||||
|
||||
impl Config {
|
||||
|
|
@ -79,16 +104,16 @@ impl Config {
|
|||
Ok(toml::from_str(&input)?)
|
||||
}
|
||||
|
||||
fn get_cloneable_cfg(&self) -> Result<CloneableConfig> {
|
||||
Ok(CloneableConfig {
|
||||
fn get_cloneable_cfg(&self) -> CloneableConfig {
|
||||
CloneableConfig {
|
||||
max_stanza_size_bytes: self.max_stanza_size_bytes,
|
||||
s2s_target: self.s2s_target.clone(),
|
||||
c2s_target: self.c2s_target.clone(),
|
||||
proxy: self.proxy,
|
||||
acceptor: self.tls_acceptor()?,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature = "incoming")]
|
||||
fn tls_acceptor(&self) -> Result<TlsAcceptor> {
|
||||
let mut tls_key = pkcs8_private_keys(&mut BufReader::new(File::open(&self.tls_key)?)).map_err(|_| io::Error::new(io::ErrorKind::InvalidInput, "invalid key"))?;
|
||||
if tls_key.is_empty() {
|
||||
|
|
@ -99,142 +124,61 @@ impl Config {
|
|||
let tls_cert = certs(&mut BufReader::new(File::open(&self.tls_cert)?)).map_err(|_| io::Error::new(io::ErrorKind::InvalidInput, "invalid cert"))?;
|
||||
|
||||
let mut config = ServerConfig::new(NoClientAuth::new());
|
||||
config.set_single_cert(tls_cert, tls_key).map_err(|err| io::Error::new(io::ErrorKind::InvalidInput, err))?;
|
||||
config.set_single_cert(tls_cert, tls_key)?;
|
||||
Ok(TlsAcceptor::from(Arc::new(config)))
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(PartialEq)]
|
||||
pub enum AllowedType {
|
||||
ClientOnly,
|
||||
ServerOnly,
|
||||
Any,
|
||||
}
|
||||
|
||||
fn to_str(buf: &[u8]) -> std::borrow::Cow<'_, str> {
|
||||
//&str {
|
||||
//std::str::from_utf8(buf).unwrap_or("[invalid utf-8]")
|
||||
String::from_utf8_lossy(buf)
|
||||
}
|
||||
|
||||
async fn handle_connection(mut stream: tokio::net::TcpStream, client_addr: SocketAddr, local_addr: SocketAddr, config: CloneableConfig) -> Result<()> {
|
||||
println!("INFO: {} connected", client_addr);
|
||||
async fn shuffle_rd_wr<R: AsyncRead + Unpin, W: AsyncWrite + Unpin>(
|
||||
in_rd: R,
|
||||
in_wr: W,
|
||||
config: CloneableConfig,
|
||||
local_addr: SocketAddr,
|
||||
client_addr: SocketAddr,
|
||||
allowed_type: AllowedType,
|
||||
) -> Result<()> {
|
||||
let filter = StanzaFilter::new(config.max_stanza_size_bytes);
|
||||
shuffle_rd_wr_filter(in_rd, in_wr, config, local_addr, client_addr, allowed_type, filter).await
|
||||
}
|
||||
|
||||
let mut in_filter = StanzaFilter::new(config.max_stanza_size_bytes);
|
||||
|
||||
let direct_tls = {
|
||||
// sooo... I don't think peek here can be used for > 1 byte without this timer
|
||||
// craziness... can it? this could be switched to only peek 1 byte and assume
|
||||
// a leading 0x16 is TLS, it would *probably* be ok ?
|
||||
//let mut p = [0u8; 3];
|
||||
let mut p = &mut in_filter.buf[0..3];
|
||||
// wait up to 10 seconds until 3 bytes have been read
|
||||
use std::time::{Duration, Instant};
|
||||
let duration = Duration::from_secs(10);
|
||||
let now = Instant::now();
|
||||
loop {
|
||||
let n = stream.peek(&mut p).await?;
|
||||
if n == 3 {
|
||||
break; // success
|
||||
}
|
||||
if n == 0 {
|
||||
bail!("not enough bytes");
|
||||
}
|
||||
if Instant::now() - now > duration {
|
||||
bail!("less than 3 bytes in 10 seconds, closed connection?");
|
||||
}
|
||||
}
|
||||
|
||||
/* TLS packet starts with a record "Hello" (0x16), followed by version
|
||||
* (0x03 0x00-0x03) (RFC6101 A.1)
|
||||
* This means we reject SSLv2 and lower, which is actually a good thing (RFC6176)
|
||||
*/
|
||||
p[0] == 0x16 && p[1] == 0x03 && p[2] <= 0x03
|
||||
};
|
||||
|
||||
println!("INFO: {} direct_tls: {}", client_addr, direct_tls);
|
||||
|
||||
// starttls
|
||||
if !direct_tls {
|
||||
let mut proceed_sent = false;
|
||||
|
||||
let (in_rd, mut in_wr) = stream.split();
|
||||
// we naively read 1 byte at a time, which buffering significantly speeds up
|
||||
let in_rd = tokio::io::BufReader::with_capacity(IN_BUFFER_SIZE, in_rd);
|
||||
let mut in_rd = StanzaReader(in_rd);
|
||||
|
||||
while let Ok(Some(buf)) = in_rd.next(&mut in_filter).await {
|
||||
debug!("received pre-tls stanza: {} '{}'", client_addr, to_str(&buf));
|
||||
if buf.starts_with(b"<?xml ") {
|
||||
debug!("> {} '{}'", client_addr, to_str(&buf));
|
||||
in_wr.write_all(&buf).await?;
|
||||
in_wr.flush().await?;
|
||||
} else if buf.starts_with(b"<stream:stream ") {
|
||||
// gajim seems to REQUIRE an id here...
|
||||
let buf = if buf.contains_seq(b"id=") {
|
||||
buf.replace_first(b" id='", b" id='xmpp-proxy")
|
||||
.replace_first(br#" id=""#, br#" id="xmpp-proxy"#)
|
||||
.replace_first(b" to=", br#" bla toblala="#)
|
||||
.replace_first(b" from=", b" to=")
|
||||
.replace_first(br#" bla toblala="#, br#" from="#)
|
||||
} else {
|
||||
buf.replace_first(b" to=", br#" bla toblala="#)
|
||||
.replace_first(b" from=", b" to=")
|
||||
.replace_first(br#" bla toblala="#, br#" id='xmpp-proxy' from="#)
|
||||
};
|
||||
|
||||
debug!("> {} '{}'", client_addr, to_str(&buf));
|
||||
in_wr.write_all(&buf).await?;
|
||||
|
||||
// ejabberd never sends <starttls/> with the first, only the second?
|
||||
//let buf = br###"<features xmlns="http://etherx.jabber.org/streams"><starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"><required/></starttls></features>"###;
|
||||
let buf = br###"<stream:features><starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"><required/></starttls></stream:features>"###;
|
||||
debug!("> {} '{}'", client_addr, to_str(buf));
|
||||
in_wr.write_all(buf).await?;
|
||||
in_wr.flush().await?;
|
||||
} else if buf.starts_with(b"<starttls ") {
|
||||
let buf = br###"<proceed xmlns="urn:ietf:params:xml:ns:xmpp-tls" />"###;
|
||||
debug!("> {} '{}'", client_addr, to_str(buf));
|
||||
in_wr.write_all(buf).await?;
|
||||
in_wr.flush().await?;
|
||||
proceed_sent = true;
|
||||
break;
|
||||
} else {
|
||||
bail!("bad pre-tls stanza: {}", to_str(&buf));
|
||||
}
|
||||
}
|
||||
if !proceed_sent {
|
||||
bail!("stream ended before open");
|
||||
}
|
||||
}
|
||||
|
||||
let stream = config.acceptor.accept(stream).await?;
|
||||
|
||||
let (in_rd, mut in_wr) = tokio::io::split(stream);
|
||||
async fn shuffle_rd_wr_filter<R: AsyncRead + Unpin, W: AsyncWrite + Unpin>(
|
||||
in_rd: R,
|
||||
mut in_wr: W,
|
||||
config: CloneableConfig,
|
||||
local_addr: SocketAddr,
|
||||
client_addr: SocketAddr,
|
||||
allowed_type: AllowedType,
|
||||
in_filter: StanzaFilter,
|
||||
) -> Result<()> {
|
||||
// we naively read 1 byte at a time, which buffering significantly speeds up
|
||||
let in_rd = tokio::io::BufReader::with_capacity(IN_BUFFER_SIZE, in_rd);
|
||||
let mut in_rd = StanzaReader(in_rd);
|
||||
|
||||
// now read to figure out client vs server
|
||||
let (stream_open, is_c2s) = {
|
||||
let mut stream_open = Vec::new();
|
||||
let mut ret = None;
|
||||
let (stream_open, is_c2s, mut in_rd, mut in_filter) = stream_preamble(StanzaReader(in_rd), client_addr, in_filter).await?;
|
||||
|
||||
while let Ok(Some(buf)) = in_rd.next(&mut in_filter).await {
|
||||
debug!("received pre-<stream:stream> stanza: {} '{}'", client_addr, to_str(&buf));
|
||||
if buf.starts_with(b"<?xml ") {
|
||||
stream_open.extend_from_slice(buf);
|
||||
} else if buf.starts_with(b"<stream:stream ") {
|
||||
stream_open.extend_from_slice(buf);
|
||||
//return (stream_open, stanza.contains(r#" xmlns="jabber:client""#) || stanza.contains(r#" xmlns='jabber:client'"#));
|
||||
ret = Some((stream_open, buf.contains_seq(br#" xmlns="jabber:client""#) || buf.contains_seq(br#" xmlns='jabber:client'"#)));
|
||||
break;
|
||||
} else {
|
||||
bail!("bad pre-<stream:stream> stanza: {}", to_str(&buf));
|
||||
}
|
||||
let target = if is_c2s {
|
||||
if allowed_type == AllowedType::ServerOnly {
|
||||
bail!("c2s requested when only s2s allowed");
|
||||
}
|
||||
if ret.is_some() {
|
||||
ret.unwrap()
|
||||
} else {
|
||||
bail!("stream ended before open");
|
||||
config.c2s_target
|
||||
} else {
|
||||
if allowed_type == AllowedType::ClientOnly {
|
||||
bail!("s2s requested when only c2s allowed");
|
||||
}
|
||||
config.s2s_target
|
||||
};
|
||||
|
||||
let target = if is_c2s { config.c2s_target } else { config.s2s_target };
|
||||
|
||||
println!("INFO: {} is_c2s: {}, target: {}", client_addr, is_c2s, target);
|
||||
|
||||
let out_stream = tokio::net::TcpStream::connect(target).await?;
|
||||
|
|
@ -249,7 +193,6 @@ async fn handle_connection(mut stream: tokio::net::TcpStream, client_addr: Socke
|
|||
*/
|
||||
// tokio AsyncWrite doesn't have write_fmt so have to go through this buffer for some crazy reason
|
||||
//write!(out_wr, "PROXY TCP{} {} {} {} {}\r\n", if client_addr.is_ipv4() { '4' } else {'6' }, client_addr.ip(), local_addr.ip(), client_addr.port(), local_addr.port())?;
|
||||
use std::io::Write;
|
||||
write!(
|
||||
&mut in_filter.buf[0..],
|
||||
"PROXY TCP{} {} {} {} {}\r\n",
|
||||
|
|
@ -299,26 +242,25 @@ async fn handle_connection(mut stream: tokio::net::TcpStream, client_addr: Socke
|
|||
Ok(())
|
||||
}
|
||||
|
||||
/*
|
||||
async fn handle_connection(mut stream: tokio::net::TcpStream, client_addr: SocketAddr, local_addr: SocketAddr, config: CloneableConfig) -> Result<()> {
|
||||
Ok(())
|
||||
}
|
||||
*/
|
||||
fn spawn_listener(listener: TcpListener, config: CloneableConfig) -> JoinHandle<Result<()>> {
|
||||
let local_addr = listener.local_addr().die("could not get local_addr?");
|
||||
tokio::spawn(async move {
|
||||
loop {
|
||||
let (stream, client_addr) = listener.accept().await?;
|
||||
let config = config.clone();
|
||||
tokio::spawn(async move {
|
||||
if let Err(e) = handle_connection(stream, client_addr, local_addr, config).await {
|
||||
eprintln!("ERROR: {} {}", client_addr, e);
|
||||
}
|
||||
});
|
||||
async fn stream_preamble<R: AsyncRead + Unpin>(mut in_rd: StanzaReader<R>, client_addr: SocketAddr, mut in_filter: StanzaFilter) -> Result<(Vec<u8>, bool, StanzaReader<R>, StanzaFilter)> {
|
||||
let mut stream_open = Vec::new();
|
||||
while let Ok(Some(buf)) = in_rd.next(&mut in_filter).await {
|
||||
debug!("received pre-<stream:stream> stanza: {} '{}'", client_addr, to_str(&buf));
|
||||
if buf.starts_with(b"<?xml ") {
|
||||
stream_open.extend_from_slice(buf);
|
||||
} else if buf.starts_with(b"<stream:stream ") {
|
||||
stream_open.extend_from_slice(buf);
|
||||
return Ok((
|
||||
stream_open,
|
||||
buf.contains_seq(br#" xmlns="jabber:client""#) || buf.contains_seq(br#" xmlns='jabber:client'"#),
|
||||
in_rd,
|
||||
in_filter,
|
||||
));
|
||||
} else {
|
||||
bail!("bad pre-<stream:stream> stanza: {}", to_str(&buf));
|
||||
}
|
||||
#[allow(unreachable_code)]
|
||||
Ok(())
|
||||
})
|
||||
}
|
||||
bail!("stream ended before open");
|
||||
}
|
||||
|
||||
#[tokio::main]
|
||||
|
|
@ -326,12 +268,28 @@ fn spawn_listener(listener: TcpListener, config: CloneableConfig) -> JoinHandle<
|
|||
async fn main() {
|
||||
let main_config = Config::parse(std::env::args_os().skip(1).next().unwrap_or(OsString::from("/etc/xmpp-proxy/xmpp-proxy.toml"))).die("invalid config file");
|
||||
|
||||
let config = main_config.get_cloneable_cfg().die("invalid cert/key ?");
|
||||
let config = main_config.get_cloneable_cfg();
|
||||
|
||||
let mut handles = Vec::with_capacity(main_config.listen.len());
|
||||
for listener in main_config.listen {
|
||||
let listener = TcpListener::bind(&listener).await.die("cannot listen on port/interface");
|
||||
handles.push(spawn_listener(listener, config.clone()));
|
||||
let mut handles: Vec<JoinHandle<Result<()>>> = Vec::new();
|
||||
#[cfg(feature = "incoming")]
|
||||
if let Some(ref listeners) = main_config.listen {
|
||||
let acceptor = main_config.tls_acceptor().die("invalid cert/key ?");
|
||||
for listener in listeners {
|
||||
handles.push(spawn_tls_listener(listener.parse().die("invalid listener address"), config.clone(), acceptor.clone()));
|
||||
}
|
||||
}
|
||||
#[cfg(feature = "quic")]
|
||||
if let Some(ref listeners) = main_config.quic_listen {
|
||||
let quic_config = main_config.quic_server_config().die("invalid cert/key ?");
|
||||
for listener in listeners {
|
||||
handles.push(spawn_quic_listener(listener.parse().die("invalid listener address"), config.clone(), quic_config.clone()));
|
||||
}
|
||||
}
|
||||
#[cfg(feature = "outgoing")]
|
||||
if let Some(ref listeners) = main_config.outgoing_listen {
|
||||
for listener in listeners {
|
||||
handles.push(spawn_outgoing_listener(listener.parse().die("invalid listener address"), config.max_stanza_size_bytes));
|
||||
}
|
||||
}
|
||||
futures::future::join_all(handles).await;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,75 @@
|
|||
use crate::*;
|
||||
|
||||
async fn handle_outgoing_connection(stream: tokio::net::TcpStream, client_addr: SocketAddr, max_stanza_size_bytes: usize) -> Result<()> {
|
||||
println!("INFO: outgoing {} connected", client_addr);
|
||||
|
||||
let in_filter = StanzaFilter::new(max_stanza_size_bytes);
|
||||
|
||||
let (in_rd, mut in_wr) = tokio::io::split(stream);
|
||||
|
||||
// we naively read 1 byte at a time, which buffering significantly speeds up
|
||||
//let in_rd = tokio::io::BufReader::with_capacity(IN_BUFFER_SIZE, in_rd);
|
||||
|
||||
// now read to figure out client vs server
|
||||
let (stream_open, is_c2s, in_rd, mut in_filter) = stream_preamble(StanzaReader(in_rd), client_addr, in_filter).await?;
|
||||
// pull raw reader back out of StanzaReader
|
||||
let mut in_rd = in_rd.0;
|
||||
|
||||
// todo: unsure how legit changing to a string here is...
|
||||
let domain = to_str(stream_open.extract_between(b" to='", b"'").or_else(|_| stream_open.extract_between(b" to=\"", b"\""))?);
|
||||
|
||||
println!("INFO: {} is_c2s: {}, domain: {}", client_addr, is_c2s, domain);
|
||||
|
||||
debug!("< {} {} '{}'", client_addr, c2s(is_c2s), to_str(&stream_open));
|
||||
let (mut out_wr, mut out_rd, stream_open) = srv_connect(&domain, is_c2s, &stream_open, &mut in_filter).await?;
|
||||
// send server response to client
|
||||
in_wr.write_all(&stream_open).await?;
|
||||
in_wr.flush().await?;
|
||||
drop(stream_open);
|
||||
|
||||
let mut out_buf = [0u8; OUT_BUFFER_SIZE];
|
||||
|
||||
loop {
|
||||
tokio::select! {
|
||||
Ok(buf) = out_rd.next(&mut in_filter) => {
|
||||
match buf {
|
||||
None => break,
|
||||
Some(buf) => {
|
||||
debug!("< {} {} '{}'", client_addr, c2s(is_c2s), to_str(buf));
|
||||
in_wr.write_all(buf).await?;
|
||||
in_wr.flush().await?;
|
||||
}
|
||||
}
|
||||
},
|
||||
// we could filter outgoing from-client stanzas by size here too by doing same as above
|
||||
// but instead, we'll just send whatever the client sends as it sends it...
|
||||
Ok(n) = in_rd.read(&mut out_buf) => {
|
||||
if n == 0 {
|
||||
break;
|
||||
}
|
||||
debug!("> {} {} '{}'", client_addr, c2s(is_c2s), to_str(&out_buf[0..n]));
|
||||
out_wr.write_all(&out_buf[0..n]).await?;
|
||||
out_wr.flush().await?;
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
println!("INFO: {} disconnected", client_addr);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn spawn_outgoing_listener(local_addr: SocketAddr, max_stanza_size_bytes: usize) -> JoinHandle<Result<()>> {
|
||||
tokio::spawn(async move {
|
||||
let listener = TcpListener::bind(&local_addr).await.die("cannot listen on port/interface");
|
||||
loop {
|
||||
let (stream, client_addr) = listener.accept().await?;
|
||||
tokio::spawn(async move {
|
||||
if let Err(e) = handle_outgoing_connection(stream, client_addr, max_stanza_size_bytes).await {
|
||||
eprintln!("ERROR: {} {}", client_addr, e);
|
||||
}
|
||||
});
|
||||
}
|
||||
#[allow(unreachable_code)]
|
||||
Ok(())
|
||||
})
|
||||
}
|
||||
|
|
@ -0,0 +1,113 @@
|
|||
use crate::*;
|
||||
use futures::StreamExt;
|
||||
use quinn::{ClientConfigBuilder, Endpoint, ServerConfig, ServerConfigBuilder, TransportConfig};
|
||||
use std::{net::SocketAddr, sync::Arc};
|
||||
use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
|
||||
|
||||
use anyhow::Result;
|
||||
|
||||
pub async fn quic_connect(target: SocketAddr, server_name: &str, is_c2s: bool) -> Result<(Box<dyn AsyncWrite + Unpin + Send>, Box<dyn AsyncRead + Unpin + Send>)> {
|
||||
let bind_addr = "0.0.0.0:0".parse().unwrap();
|
||||
let mut client_cfg = ClientConfigBuilder::default();
|
||||
client_cfg.protocols(if is_c2s { ALPN_XMPP_CLIENT } else { ALPN_XMPP_SERVER });
|
||||
let client_cfg = client_cfg.build();
|
||||
let mut endpoint_builder = Endpoint::builder();
|
||||
endpoint_builder.default_client_config(client_cfg);
|
||||
let (endpoint, _incoming) = endpoint_builder.bind(&bind_addr)?;
|
||||
// connect to server
|
||||
let quinn::NewConnection { connection, .. } = endpoint.connect(&target, server_name).unwrap().await.unwrap();
|
||||
debug!("[client] connected: addr={}", connection.remote_address());
|
||||
|
||||
if is_c2s {
|
||||
let (wrt, rd) = connection.open_bi().await.unwrap();
|
||||
Ok((Box::new(wrt), Box::new(rd)))
|
||||
} else {
|
||||
let wrt = connection.open_uni().await.unwrap();
|
||||
Ok((Box::new(wrt), Box::new(NoopIo)))
|
||||
}
|
||||
}
|
||||
|
||||
impl Config {
|
||||
pub fn quic_server_config(&self) -> Result<ServerConfig> {
|
||||
let pem = std::fs::read(&self.tls_key).expect("error reading key");
|
||||
let tls_key = quinn::PrivateKey::from_pem(&pem).expect("error parsing key");
|
||||
|
||||
let pem = std::fs::read(&self.tls_cert).expect("error reading certificates");
|
||||
let cert_chain = quinn::CertificateChain::from_pem(&pem).expect("error parsing certificates");
|
||||
|
||||
let transport_config = TransportConfig::default();
|
||||
// todo: configure transport_config here if needed
|
||||
let mut server_config = ServerConfig::default();
|
||||
server_config.transport = Arc::new(transport_config);
|
||||
let mut cfg_builder = ServerConfigBuilder::new(server_config);
|
||||
cfg_builder.certificate(cert_chain, tls_key)?;
|
||||
|
||||
Ok(cfg_builder.build())
|
||||
}
|
||||
}
|
||||
|
||||
struct NoopIo;
|
||||
|
||||
use core::pin::Pin;
|
||||
use core::task::{Context, Poll};
|
||||
|
||||
// todo: could change this to return Error and kill the stream instead, after all, s2s *should* not be receiving any bytes back
|
||||
impl AsyncWrite for NoopIo {
|
||||
fn poll_write(self: Pin<&mut Self>, _cx: &mut Context<'_>, buf: &[u8]) -> Poll<io::Result<usize>> {
|
||||
Poll::Ready(Ok(buf.len()))
|
||||
}
|
||||
|
||||
fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
|
||||
Poll::Ready(Ok(()))
|
||||
}
|
||||
|
||||
fn poll_shutdown(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<io::Result<()>> {
|
||||
Poll::Ready(Ok(()))
|
||||
}
|
||||
}
|
||||
|
||||
impl AsyncRead for NoopIo {
|
||||
fn poll_read(self: Pin<&mut Self>, _cx: &mut Context<'_>, _buf: &mut ReadBuf<'_>) -> Poll<io::Result<()>> {
|
||||
Poll::Pending
|
||||
}
|
||||
}
|
||||
|
||||
pub fn spawn_quic_listener(local_addr: SocketAddr, config: CloneableConfig, server_config: ServerConfig) -> JoinHandle<Result<()>> {
|
||||
//let (mut incoming, server_cert) = make_server_endpoint(local_addr).die("cannot listen on port/interface");
|
||||
let mut endpoint_builder = Endpoint::builder();
|
||||
endpoint_builder.listen(server_config);
|
||||
let (_endpoint, mut incoming) = endpoint_builder.bind(&local_addr).die("cannot listen on port/interface");
|
||||
// accept a single connection
|
||||
tokio::spawn(async move {
|
||||
let incoming_conn = incoming.next().await.unwrap();
|
||||
let mut new_conn = incoming_conn.await.unwrap();
|
||||
let client_addr = new_conn.connection.remote_address();
|
||||
let config = config.clone();
|
||||
tokio::spawn(async move {
|
||||
println!("INFO: {} quic connected", client_addr);
|
||||
|
||||
loop {
|
||||
tokio::select! {
|
||||
Some(Ok((wrt, rd))) = new_conn.bi_streams.next() => {
|
||||
let config = config.clone();
|
||||
tokio::spawn(async move {
|
||||
if let Err(e) = shuffle_rd_wr(rd, wrt, config, local_addr, client_addr, AllowedType::ClientOnly).await {
|
||||
eprintln!("ERROR: {} {}", client_addr, e);
|
||||
}
|
||||
});
|
||||
},
|
||||
Some(Ok(rd)) = new_conn.uni_streams.next() => {
|
||||
let config = config.clone();
|
||||
tokio::spawn(async move {
|
||||
if let Err(e) = shuffle_rd_wr(rd, NoopIo, config, local_addr, client_addr, AllowedType::ServerOnly).await {
|
||||
eprintln!("ERROR: {} {}", client_addr, e);
|
||||
}
|
||||
});
|
||||
},
|
||||
}
|
||||
}
|
||||
});
|
||||
#[allow(unreachable_code)]
|
||||
Ok(())
|
||||
})
|
||||
}
|
||||
|
|
@ -4,6 +4,7 @@ pub trait SliceSubsequence<T> {
|
|||
fn trim_start(&self, needle: &[T]) -> &[T];
|
||||
fn first_index_of(&self, needle: &[T]) -> Result<usize>;
|
||||
fn replace_first(self, needle: &[T], replacement: &[T]) -> Vec<T>;
|
||||
fn extract_between(&self, before: &[T], after: &[T]) -> Result<&[T]>;
|
||||
|
||||
fn contains_seq(&self, needle: &[T]) -> bool {
|
||||
self.first_index_of(needle).is_ok()
|
||||
|
|
@ -39,6 +40,11 @@ impl<T: PartialEq + Clone> SliceSubsequence<T> for &[T] {
|
|||
fn replace_first(self, needle: &[T], replacement: &[T]) -> Vec<T> {
|
||||
self.to_vec().replace_first(needle, replacement)
|
||||
}
|
||||
|
||||
fn extract_between(&self, before: &[T], after: &[T]) -> Result<&[T]> {
|
||||
let first = &self[self.first_index_of(before)? + before.len()..];
|
||||
Ok(&first[..first.first_index_of(after)? + after.len() - 1])
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: PartialEq + Clone> SliceSubsequence<T> for Vec<T> {
|
||||
|
|
@ -47,7 +53,7 @@ impl<T: PartialEq + Clone> SliceSubsequence<T> for Vec<T> {
|
|||
}
|
||||
|
||||
fn first_index_of(&self, needle: &[T]) -> Result<usize> {
|
||||
return (self.as_slice()).first_index_of(needle);
|
||||
(self.as_slice()).first_index_of(needle)
|
||||
}
|
||||
|
||||
fn replace_first(self, needle: &[T], replacement: &[T]) -> Vec<T> {
|
||||
|
|
@ -62,6 +68,11 @@ impl<T: PartialEq + Clone> SliceSubsequence<T> for Vec<T> {
|
|||
self
|
||||
}
|
||||
}
|
||||
|
||||
fn extract_between(&self, before: &[T], after: &[T]) -> Result<&[T]> {
|
||||
let first = &self[self.first_index_of(before)? + before.len()..];
|
||||
Ok(&first[..first.first_index_of(after)? + after.len() - 1])
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
|
|
@ -99,4 +110,17 @@ mod tests {
|
|||
let buf = buf.replace_first(b" bla2", b"");
|
||||
assert_eq!(buf, b"bla to='tsnhaou'");
|
||||
}
|
||||
#[test]
|
||||
fn extract_between() {
|
||||
let buf = &b"bla to='tsnhaou' bla2"[..];
|
||||
assert_eq!(buf.extract_between(b" to='", b"'").unwrap(), b"tsnhaou");
|
||||
|
||||
let buf = &br###"<stream:stream xmlns='jabber:server' xmlns:stream='http://etherx.jabber.org/streams' xmlns:db='jabber:server:dialback' version='1.0' to='example.org' from='example.com' xml:lang='en'>"###[..];
|
||||
|
||||
assert_eq!(buf.extract_between(b" to='", b"'").or_else(|_| buf.extract_between(b" to=\"", b"\"")).unwrap(), b"example.org");
|
||||
|
||||
let buf = &br###"<stream:stream xmlns="jabber:server" xmlns:stream="http://etherx.jabber.org/streams" xmlns:db="jabber:server:dialback" version="1.0" to="example.org" from="example.com" xml:lang="en">"###[..];
|
||||
|
||||
assert_eq!(buf.extract_between(b" to='", b"'").or_else(|_| buf.extract_between(b" to=\"", b"\"")).unwrap(), b"example.org");
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,208 @@
|
|||
use std::net::SocketAddr;
|
||||
|
||||
use trust_dns_resolver::error::ResolveError;
|
||||
use trust_dns_resolver::lookup::SrvLookup;
|
||||
use trust_dns_resolver::{IntoName, TokioAsyncResolver};
|
||||
|
||||
use anyhow::{bail, Result};
|
||||
|
||||
use tokio::io::{AsyncRead, AsyncWrite, AsyncWriteExt};
|
||||
|
||||
use crate::stanzafilter::StanzaReader;
|
||||
use crate::*;
|
||||
|
||||
lazy_static::lazy_static! {
|
||||
static ref RESOLVER: TokioAsyncResolver = TokioAsyncResolver::tokio_from_system_conf().unwrap();
|
||||
}
|
||||
|
||||
#[derive(Copy, Clone, Debug)]
|
||||
pub enum XmppConnectionType {
|
||||
StartTLS,
|
||||
DirectTLS,
|
||||
#[cfg(feature = "quic")]
|
||||
QUIC,
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct XmppConnection {
|
||||
conn_type: XmppConnectionType,
|
||||
priority: u16,
|
||||
weight: u16,
|
||||
port: u16,
|
||||
target: String,
|
||||
}
|
||||
|
||||
impl XmppConnection {
|
||||
pub async fn connect(
|
||||
&self,
|
||||
domain: &str,
|
||||
is_c2s: bool,
|
||||
stream_open: &[u8],
|
||||
mut in_filter: &mut crate::StanzaFilter,
|
||||
) -> Result<(Box<dyn AsyncWrite + Unpin + Send>, Box<dyn AsyncRead + Unpin + Send>)> {
|
||||
// todo: need to set options to Ipv4AndIpv6
|
||||
let ips = RESOLVER.lookup_ip(self.target.clone()).await?;
|
||||
debug!("trying 1 domain {}, SRV: {:?}", domain, self);
|
||||
for ip in ips.iter() {
|
||||
debug!("trying domain {}, ip {}, SRV: {:?}", domain, ip, self);
|
||||
match self.conn_type {
|
||||
XmppConnectionType::StartTLS => match crate::starttls_connect(SocketAddr::new(ip, self.port), domain, is_c2s, &stream_open, &mut in_filter).await {
|
||||
Ok((wr, rd)) => return Ok((wr, rd)),
|
||||
Err(e) => println!("ERROR: starttls connection failed to IP {} from SRV {}, error: {}", ip, self.target, e),
|
||||
},
|
||||
XmppConnectionType::DirectTLS => match crate::tls_connect(SocketAddr::new(ip, self.port), domain, is_c2s).await {
|
||||
Ok((wr, rd)) => return Ok((wr, rd)),
|
||||
Err(e) => println!("ERROR: direct tls connection failed to IP {} from SRV {}, error: {}", ip, self.target, e),
|
||||
},
|
||||
#[cfg(feature = "quic")]
|
||||
XmppConnectionType::QUIC => match crate::quic_connect(SocketAddr::new(ip, self.port), domain, is_c2s).await {
|
||||
Ok((wr, rd)) => return Ok((wr, rd)),
|
||||
Err(e) => println!("ERROR: quic connection failed to IP {} from SRV {}, error: {}", ip, self.target, e),
|
||||
},
|
||||
}
|
||||
}
|
||||
debug!("trying 2 domain {}, SRV: {:?}", domain, self);
|
||||
bail!("cannot connect to any IPs for SRV: {}", self.target)
|
||||
}
|
||||
}
|
||||
|
||||
fn collect_srvs(ret: &mut Vec<XmppConnection>, srv_records: std::result::Result<SrvLookup, ResolveError>, conn_type: XmppConnectionType) {
|
||||
if let Ok(srv_records) = srv_records {
|
||||
for srv in srv_records.iter() {
|
||||
if !srv.target().is_root() {
|
||||
ret.push(XmppConnection {
|
||||
conn_type,
|
||||
priority: srv.priority(),
|
||||
weight: srv.weight(),
|
||||
port: srv.port(),
|
||||
target: srv.target().to_ascii(),
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub async fn get_xmpp_connections(domain: &str, is_c2s: bool) -> Result<Vec<XmppConnection>> {
|
||||
let (starttls, direct_tls, quic) = if is_c2s {
|
||||
("_xmpp-client._tcp", "_xmpps-client._tcp", "_xmppq-client._udp")
|
||||
} else {
|
||||
("_xmpp-server._tcp", "_xmpps-server._tcp", "_xmppq-server._udp")
|
||||
};
|
||||
|
||||
let starttls = format!("{}.{}.", starttls, domain).into_name()?;
|
||||
let direct_tls = format!("{}.{}.", direct_tls, domain).into_name()?;
|
||||
let quic = format!("{}.{}.", quic, domain).into_name()?;
|
||||
|
||||
// this lets them run concurrently but not in parallel, could spawn parallel tasks but... worth it ?
|
||||
let (starttls, direct_tls, quic) = tokio::join!(RESOLVER.srv_lookup(starttls), RESOLVER.srv_lookup(direct_tls), RESOLVER.srv_lookup(quic),);
|
||||
|
||||
let mut ret = Vec::new();
|
||||
collect_srvs(&mut ret, starttls, XmppConnectionType::StartTLS);
|
||||
collect_srvs(&mut ret, direct_tls, XmppConnectionType::DirectTLS);
|
||||
#[cfg(feature = "quic")]
|
||||
collect_srvs(&mut ret, quic, XmppConnectionType::QUIC);
|
||||
ret.sort_by(|a, b| a.priority.cmp(&b.priority));
|
||||
// todo: do something with weight
|
||||
|
||||
if ret.is_empty() {
|
||||
// default starttls ports
|
||||
ret.push(XmppConnection {
|
||||
priority: 0,
|
||||
weight: 0,
|
||||
target: domain.to_string(),
|
||||
conn_type: XmppConnectionType::StartTLS,
|
||||
port: if is_c2s { 5222 } else { 5269 },
|
||||
});
|
||||
// by spec there are no default direct/quic ports, but we are going 443
|
||||
ret.push(XmppConnection {
|
||||
priority: 0,
|
||||
weight: 0,
|
||||
target: domain.to_string(),
|
||||
conn_type: XmppConnectionType::DirectTLS,
|
||||
port: 443,
|
||||
});
|
||||
#[cfg(feature = "quic")]
|
||||
ret.push(XmppConnection {
|
||||
priority: 0,
|
||||
weight: 0,
|
||||
target: domain.to_string(),
|
||||
conn_type: XmppConnectionType::QUIC,
|
||||
port: 443,
|
||||
});
|
||||
}
|
||||
|
||||
/*
|
||||
// manual target for testing
|
||||
ret.clear();
|
||||
ret.push(XmppConnection {
|
||||
priority: 0,
|
||||
weight: 0,
|
||||
target: "127.0.0.1".to_string(),
|
||||
conn_type: XmppConnectionType::QUIC,
|
||||
port: 4443,
|
||||
});
|
||||
*/
|
||||
|
||||
debug!("{} records for {}: {:?}", ret.len(), domain, ret);
|
||||
|
||||
Ok(ret)
|
||||
}
|
||||
|
||||
pub async fn srv_connect(
|
||||
domain: &str,
|
||||
is_c2s: bool,
|
||||
stream_open: &[u8],
|
||||
mut in_filter: &mut crate::StanzaFilter,
|
||||
) -> Result<(Box<dyn AsyncWrite + Unpin + Send>, StanzaReader<tokio::io::BufReader<Box<dyn AsyncRead + Unpin + Send>>>, Vec<u8>)> {
|
||||
for srv in get_xmpp_connections(&domain, is_c2s).await? {
|
||||
debug!("main srv: {:?}", srv);
|
||||
let connect = srv.connect(&domain, is_c2s, &stream_open, &mut in_filter).await;
|
||||
if connect.is_err() {
|
||||
continue;
|
||||
}
|
||||
let (mut out_wr, out_rd) = connect.unwrap();
|
||||
debug!("main srv out: {:?}", srv);
|
||||
|
||||
// we naively read 1 byte at a time, which buffering significantly speeds up
|
||||
let mut out_rd = StanzaReader(tokio::io::BufReader::with_capacity(crate::IN_BUFFER_SIZE, out_rd));
|
||||
|
||||
out_wr.write_all(&stream_open).await?;
|
||||
out_wr.flush().await?;
|
||||
|
||||
let mut server_response = Vec::new();
|
||||
if is_c2s {
|
||||
// let's read to first <stream:stream to make sure we are successfully connected to a real XMPP server
|
||||
let mut stream_received = false;
|
||||
while let Ok(Some(buf)) = out_rd.next(&mut in_filter).await {
|
||||
debug!("received pre-tls stanza: {} '{}'", domain, to_str(&buf));
|
||||
if buf.starts_with(b"<?xml ") {
|
||||
server_response.extend_from_slice(&buf);
|
||||
} else if buf.starts_with(b"<stream:stream ") {
|
||||
server_response.extend_from_slice(&buf);
|
||||
stream_received = true;
|
||||
break;
|
||||
} else {
|
||||
debug!("bad pre-tls stanza: {}", to_str(&buf));
|
||||
break;
|
||||
}
|
||||
}
|
||||
if !stream_received {
|
||||
debug!("bad server response, going to next record");
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
return Ok((Box::new(out_wr), out_rd, server_response));
|
||||
}
|
||||
bail!("all connection attempts failed")
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use crate::srv::*;
|
||||
#[tokio::test]
|
||||
async fn srv() -> Result<()> {
|
||||
get_xmpp_connections("burtrum.org", true).await?;
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
|
@ -211,7 +211,7 @@ mod tests {
|
|||
}
|
||||
|
||||
#[tokio::test]
|
||||
async fn process_next_byte() -> std::result::Result<(), anyhow::Error> {
|
||||
async fn process_next_byte() -> Result<()> {
|
||||
let mut filter = StanzaFilter::new(262_144);
|
||||
|
||||
//todo: <x a='/>'>This is going to be fun.</x>
|
||||
|
|
|
|||
|
|
@ -0,0 +1,209 @@
|
|||
use crate::*;
|
||||
|
||||
#[cfg(any(feature = "incoming", feature = "outgoing"))]
|
||||
use tokio_rustls::{rustls::ClientConfig, webpki::DNSNameRef, TlsConnector};
|
||||
|
||||
#[cfg(feature = "outgoing")]
|
||||
lazy_static::lazy_static! {
|
||||
static ref CLIENT_TLS_CONFIG: TlsConnector = {
|
||||
let mut config = ClientConfig::new();
|
||||
config.root_store.add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
|
||||
config.alpn_protocols.push(ALPN_XMPP_CLIENT[0].to_vec());
|
||||
let config = TlsConnector::from(Arc::new(config));
|
||||
config
|
||||
};
|
||||
static ref SERVER_TLS_CONFIG: TlsConnector = {
|
||||
let mut config = ClientConfig::new();
|
||||
config.root_store.add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
|
||||
config.alpn_protocols.push(ALPN_XMPP_SERVER[0].to_vec());
|
||||
let config = TlsConnector::from(Arc::new(config));
|
||||
config
|
||||
};
|
||||
}
|
||||
|
||||
#[cfg(feature = "outgoing")]
|
||||
pub async fn tls_connect(target: SocketAddr, server_name: &str, is_c2s: bool) -> Result<(Box<dyn AsyncWrite + Unpin + Send>, Box<dyn AsyncRead + Unpin + Send>)> {
|
||||
let dnsname = DNSNameRef::try_from_ascii_str(server_name)?;
|
||||
let stream = tokio::net::TcpStream::connect(target).await?;
|
||||
let stream = if is_c2s {
|
||||
CLIENT_TLS_CONFIG.connect(dnsname, stream).await?
|
||||
} else {
|
||||
SERVER_TLS_CONFIG.connect(dnsname, stream).await?
|
||||
};
|
||||
let (rd, wrt) = tokio::io::split(stream);
|
||||
Ok((Box::new(wrt), Box::new(rd)))
|
||||
}
|
||||
|
||||
#[cfg(feature = "outgoing")]
|
||||
pub async fn starttls_connect(
|
||||
target: SocketAddr,
|
||||
server_name: &str,
|
||||
is_c2s: bool,
|
||||
stream_open: &[u8],
|
||||
mut in_filter: &mut StanzaFilter,
|
||||
) -> Result<(Box<dyn AsyncWrite + Unpin + Send>, Box<dyn AsyncRead + Unpin + Send>)> {
|
||||
let dnsname = DNSNameRef::try_from_ascii_str(server_name)?;
|
||||
let mut stream = tokio::net::TcpStream::connect(target).await?;
|
||||
let (in_rd, mut in_wr) = stream.split();
|
||||
|
||||
// send the stream_open
|
||||
debug!("starttls sending: {} '{}'", server_name, to_str(&stream_open));
|
||||
in_wr.write_all(&stream_open).await?;
|
||||
in_wr.flush().await?;
|
||||
|
||||
// we naively read 1 byte at a time, which buffering significantly speeds up
|
||||
let in_rd = tokio::io::BufReader::with_capacity(IN_BUFFER_SIZE, in_rd);
|
||||
let mut in_rd = StanzaReader(in_rd);
|
||||
let mut proceed_received = false;
|
||||
|
||||
debug!("starttls reading stream open {}", server_name);
|
||||
while let Ok(Some(buf)) = in_rd.next(&mut in_filter).await {
|
||||
debug!("received pre-tls stanza: {} '{}'", server_name, to_str(&buf));
|
||||
if buf.starts_with(b"<?xml ") {
|
||||
// ignore this
|
||||
} else if buf.starts_with(b"<stream:stream ") {
|
||||
// ignore this
|
||||
} else if buf.starts_with(b"<stream:features") {
|
||||
// we send starttls regardless, it could have been stripped out, we don't do plaintext
|
||||
let buf = br###"<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>"###;
|
||||
debug!("> {} '{}'", server_name, to_str(buf));
|
||||
in_wr.write_all(buf).await?;
|
||||
in_wr.flush().await?;
|
||||
} else if buf.starts_with(b"<proceed ") {
|
||||
proceed_received = true;
|
||||
break;
|
||||
} else {
|
||||
bail!("bad pre-tls stanza: {}", to_str(&buf));
|
||||
}
|
||||
}
|
||||
if !proceed_received {
|
||||
bail!("stream ended before proceed");
|
||||
}
|
||||
|
||||
debug!("starttls starting TLS {}", server_name);
|
||||
let stream = if is_c2s {
|
||||
CLIENT_TLS_CONFIG.connect(dnsname, stream).await?
|
||||
} else {
|
||||
SERVER_TLS_CONFIG.connect(dnsname, stream).await?
|
||||
};
|
||||
let (rd, wrt) = tokio::io::split(stream);
|
||||
Ok((Box::new(wrt), Box::new(rd)))
|
||||
}
|
||||
|
||||
#[cfg(feature = "incoming")]
|
||||
pub fn spawn_tls_listener(local_addr: SocketAddr, config: CloneableConfig, acceptor: TlsAcceptor) -> JoinHandle<Result<()>> {
|
||||
tokio::spawn(async move {
|
||||
let listener = TcpListener::bind(&local_addr).await.die("cannot listen on port/interface");
|
||||
loop {
|
||||
let (stream, client_addr) = listener.accept().await?;
|
||||
let config = config.clone();
|
||||
let acceptor = acceptor.clone();
|
||||
tokio::spawn(async move {
|
||||
if let Err(e) = handle_tls_connection(stream, client_addr, local_addr, config, acceptor).await {
|
||||
eprintln!("ERROR: {} {}", client_addr, e);
|
||||
}
|
||||
});
|
||||
}
|
||||
#[allow(unreachable_code)]
|
||||
Ok(())
|
||||
})
|
||||
}
|
||||
|
||||
#[cfg(feature = "incoming")]
|
||||
async fn handle_tls_connection(mut stream: tokio::net::TcpStream, client_addr: SocketAddr, local_addr: SocketAddr, config: CloneableConfig, acceptor: TlsAcceptor) -> Result<()> {
|
||||
println!("INFO: {} connected", client_addr);
|
||||
|
||||
let mut in_filter = StanzaFilter::new(config.max_stanza_size_bytes);
|
||||
|
||||
let direct_tls = {
|
||||
// sooo... I don't think peek here can be used for > 1 byte without this timer
|
||||
// craziness... can it? this could be switched to only peek 1 byte and assume
|
||||
// a leading 0x16 is TLS, it would *probably* be ok ?
|
||||
//let mut p = [0u8; 3];
|
||||
let mut p = &mut in_filter.buf[0..3];
|
||||
// wait up to 10 seconds until 3 bytes have been read
|
||||
use std::time::{Duration, Instant};
|
||||
let duration = Duration::from_secs(10);
|
||||
let now = Instant::now();
|
||||
loop {
|
||||
let n = stream.peek(&mut p).await?;
|
||||
if n == 3 {
|
||||
break; // success
|
||||
}
|
||||
if n == 0 {
|
||||
bail!("not enough bytes");
|
||||
}
|
||||
if Instant::now() - now > duration {
|
||||
bail!("less than 3 bytes in 10 seconds, closed connection?");
|
||||
}
|
||||
}
|
||||
|
||||
/* TLS packet starts with a record "Hello" (0x16), followed by version
|
||||
* (0x03 0x00-0x03) (RFC6101 A.1)
|
||||
* This means we reject SSLv2 and lower, which is actually a good thing (RFC6176)
|
||||
*/
|
||||
p[0] == 0x16 && p[1] == 0x03 && p[2] <= 0x03
|
||||
};
|
||||
|
||||
println!("INFO: {} direct_tls: {}", client_addr, direct_tls);
|
||||
|
||||
// starttls
|
||||
if !direct_tls {
|
||||
let mut proceed_sent = false;
|
||||
|
||||
let (in_rd, mut in_wr) = stream.split();
|
||||
// we naively read 1 byte at a time, which buffering significantly speeds up
|
||||
let in_rd = tokio::io::BufReader::with_capacity(IN_BUFFER_SIZE, in_rd);
|
||||
let mut in_rd = StanzaReader(in_rd);
|
||||
|
||||
while let Ok(Some(buf)) = in_rd.next(&mut in_filter).await {
|
||||
debug!("received pre-tls stanza: {} '{}'", client_addr, to_str(&buf));
|
||||
if buf.starts_with(b"<?xml ") {
|
||||
debug!("> {} '{}'", client_addr, to_str(&buf));
|
||||
in_wr.write_all(&buf).await?;
|
||||
in_wr.flush().await?;
|
||||
} else if buf.starts_with(b"<stream:stream ") {
|
||||
// gajim seems to REQUIRE an id here...
|
||||
let buf = if buf.contains_seq(b"id=") {
|
||||
buf.replace_first(b" id='", b" id='xmpp-proxy")
|
||||
.replace_first(br#" id=""#, br#" id="xmpp-proxy"#)
|
||||
.replace_first(b" to=", br#" bla toblala="#)
|
||||
.replace_first(b" from=", b" to=")
|
||||
.replace_first(br#" bla toblala="#, br#" from="#)
|
||||
} else {
|
||||
buf.replace_first(b" to=", br#" bla toblala="#)
|
||||
.replace_first(b" from=", b" to=")
|
||||
.replace_first(br#" bla toblala="#, br#" id='xmpp-proxy' from="#)
|
||||
};
|
||||
|
||||
debug!("> {} '{}'", client_addr, to_str(&buf));
|
||||
in_wr.write_all(&buf).await?;
|
||||
|
||||
// ejabberd never sends <starttls/> with the first, only the second?
|
||||
//let buf = br###"<features xmlns="http://etherx.jabber.org/streams"><starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"><required/></starttls></features>"###;
|
||||
let buf = br###"<stream:features><starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"><required/></starttls></stream:features>"###;
|
||||
debug!("> {} '{}'", client_addr, to_str(buf));
|
||||
in_wr.write_all(buf).await?;
|
||||
in_wr.flush().await?;
|
||||
} else if buf.starts_with(b"<starttls ") {
|
||||
let buf = br###"<proceed xmlns="urn:ietf:params:xml:ns:xmpp-tls" />"###;
|
||||
debug!("> {} '{}'", client_addr, to_str(buf));
|
||||
in_wr.write_all(buf).await?;
|
||||
in_wr.flush().await?;
|
||||
proceed_sent = true;
|
||||
break;
|
||||
} else {
|
||||
bail!("bad pre-tls stanza: {}", to_str(&buf));
|
||||
}
|
||||
}
|
||||
if !proceed_sent {
|
||||
bail!("stream ended before open");
|
||||
}
|
||||
}
|
||||
|
||||
let stream = acceptor.accept(stream).await?;
|
||||
|
||||
let (in_rd, in_wr) = tokio::io::split(stream);
|
||||
|
||||
shuffle_rd_wr_filter(in_rd, in_wr, config, local_addr, client_addr, AllowedType::Any, in_filter).await
|
||||
}
|
||||
|
|
@ -1,6 +1,8 @@
|
|||
|
||||
# interfaces to listen for external XMPP connections on
|
||||
listen = [ "0.0.0.0:5222", "0.0.0.0:5269" ]
|
||||
quic_listen = [ "0.0.0.0:443" ]
|
||||
outgoing_listen = [ "0.0.0.0:5252" ]
|
||||
|
||||
# these ports shouldn't do any TLS, but should assume any connection from xmpp-proxy is secure
|
||||
# prosody module: https://modules.prosody.im/mod_secure_interfaces.html
|
||||
|
|
|
|||
Loading…
Reference in New Issue