Initial Commit

.gitignore

@@ -0,0 +1,4 @@
+/target/
+**/*.rs.bk
+.idea
+easier

Cargo.lock

@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "wireguard-proxy"
+version = "0.1.0"
+

Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "wireguard-proxy"
+version = "0.1.0"
+authors = ["moparisthebest <admin@moparisthebest.com>"]
+
+description = "Tunnel wireguard (UDP) over TCP/TLS."
+repository  = "https://code.moparisthebest.com/moparisthebest/wireguard-proxy"
+keywords    = ["wireguard", "tunnel", "tcp", "udp", "tls"]
+
+license = "MIT/Apache-2.0"
+readme = "README.md"
+
+edition = "2018"
+
+include = [
+    "**/*.rs",
+    "Cargo.toml",
+    "LICENSE-*",
+    "*.md",
+]

LICENSE-APACHE

@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
+   control with that entity. For the purposes of this definition,
+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
+   exercising permissions granted by this License.
+
+   "Source" form shall mean the preferred form for making modifications,
+   including but not limited to software source code, documentation
+   source, and configuration files.
+
+   "Object" form shall mean any form resulting from mechanical
+   transformation or translation of a Source form, including but
+   not limited to compiled object code, generated documentation,
+   and conversions to other media types.
+
+   "Work" shall mean the work of authorship, whether in Source or
+   Object form, made available under the License, as indicated by a
+   copyright notice that is included in or attached to the work
+   (an example is provided in the Appendix below).
+
+   "Derivative Works" shall mean any work, whether in Source or Object
+   form, that is based on (or derived from) the Work and for which the
+   editorial revisions, annotations, elaborations, or other modifications
+   represent, as a whole, an original work of authorship. For the purposes
+   of this License, Derivative Works shall not include works that remain
+   separable from, or merely link (or bind by name) to the interfaces of,
+   the Work and Derivative Works thereof.
+
+   "Contribution" shall mean any work of authorship, including
+   the original version of the Work and any modifications or additions
+   to that Work or Derivative Works thereof, that is intentionally
+   submitted to Licensor for inclusion in the Work by the copyright owner
+   or by an individual or Legal Entity authorized to submit on behalf of
+   the copyright owner. For the purposes of this definition, "submitted"
+   means any form of electronic, verbal, or written communication sent
+   to the Licensor or its representatives, including but not limited to
+   communication on electronic mailing lists, source code control systems,
+   and issue tracking systems that are managed by, or on behalf of, the
+   Licensor for the purpose of discussing and improving the Work, but
+   excluding communication that is conspicuously marked or otherwise
+   designated in writing by the copyright owner as "Not a Contribution."
+
+   "Contributor" shall mean Licensor and any individual or Legal Entity
+   on behalf of whom a Contribution has been received by Licensor and
+   subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   copyright license to reproduce, prepare Derivative Works of,
+   publicly display, publicly perform, sublicense, and distribute the
+   Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of
+   this License, each Contributor hereby grants to You a perpetual,
+   worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+   (except as stated in this section) patent license to make, have made,
+   use, offer to sell, sell, import, and otherwise transfer the Work,
+   where such license applies only to those patent claims licensable
+   by such Contributor that are necessarily infringed by their
+   Contribution(s) alone or by combination of their Contribution(s)
+   with the Work to which such Contribution(s) was submitted. If You
+   institute patent litigation against any entity (including a
+   cross-claim or counterclaim in a lawsuit) alleging that the Work
+   or a Contribution incorporated within the Work constitutes direct
+   or contributory patent infringement, then any patent licenses
+   granted to You under this License for that Work shall terminate
+   as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the
+   Work or Derivative Works thereof in any medium, with or without
+   modifications, and in Source or Object form, provided that You
+   meet the following conditions:
+
+   (a) You must give any other recipients of the Work or
+       Derivative Works a copy of this License; and
+
+   (b) You must cause any modified files to carry prominent notices
+       stating that You changed the files; and
+
+   (c) You must retain, in the Source form of any Derivative Works
+       that You distribute, all copyright, patent, trademark, and
+       attribution notices from the Source form of the Work,
+       excluding those notices that do not pertain to any part of
+       the Derivative Works; and
+
+   (d) If the Work includes a "NOTICE" text file as part of its
+       distribution, then any Derivative Works that You distribute must
+       include a readable copy of the attribution notices contained
+       within such NOTICE file, excluding those notices that do not
+       pertain to any part of the Derivative Works, in at least one
+       of the following places: within a NOTICE text file distributed
+       as part of the Derivative Works; within the Source form or
+       documentation, if provided along with the Derivative Works; or,
+       within a display generated by the Derivative Works, if and
+       wherever such third-party notices normally appear. The contents
+       of the NOTICE file are for informational purposes only and
+       do not modify the License. You may add Your own attribution
+       notices within Derivative Works that You distribute, alongside
+       or as an addendum to the NOTICE text from the Work, provided
+       that such additional attribution notices cannot be construed
+       as modifying the License.
+
+   You may add Your own copyright statement to Your modifications and
+   may provide additional or different license terms and conditions
+   for use, reproduction, or distribution of Your modifications, or
+   for any such Derivative Works as a whole, provided Your use,
+   reproduction, and distribution of the Work otherwise complies with
+   the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
+   except as required for reasonable and customary use in describing the
+   origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
+   work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses), even if such Contributor
+   has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
+   and charge a fee for, acceptance of support, warranty, indemnity,
+   or other liability obligations and/or rights consistent with this
+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+   To apply the Apache License to your work, attach the following
+   boilerplate notice, with the fields enclosed by brackets "[]"
+   replaced with your own identifying information. (Don't include
+   the brackets!)  The text should be enclosed in the appropriate
+   comment syntax for the file format. We also recommend that a
+   file or class name and description of purpose be included on the
+   same "printed page" as the copyright notice for easier
+   identification within third-party archives.
+
+Copyright [yyyy] [name of copyright owner]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

LICENSE-MIT

@@ -0,0 +1,25 @@
+Copyright (c) 2019 Travis Burtrum
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.

README.md

@@ -0,0 +1,28 @@
+# wireguard-proxy
+
+Server-side daemon to proxy multiple TCP connections to wireguard, client-side implementation coming here soon
+
+Testing with GNU netcat:
+
+- `nc -vulp 51820` listen on udp like wireguard would
+- `nc -u 127.0.0.1 51820` connect directly to local udp wireguard port to send/receive data
+- `nc -vlp 5555` listen on tcp like wireguard-proxy would
+- `nc 127.0.0.1 5555` connect directly to local tcp wireguard-proxy port to send/recieve data
+- so to test through wireguard-proxy run first and last command while it's running, type in both places
+
+# License
+
+This project is licensed under either of
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
+   http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license ([LICENSE-MIT](LICENSE-MIT) or
+   http://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in die by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.

src/main.rs

@@ -0,0 +1,186 @@
+use std::io::{Read, Write};
+use std::net::{TcpListener, TcpStream, UdpSocket};
+use std::time::Duration;
+
+use std::env;
+use std::str::FromStr;
+use std::sync::Arc;
+use std::thread;
+
+struct Server {
+    udp_target: String,
+    udp_host: String,
+    udp_low_port: u16,
+    udp_high_port: u16,
+    socket_timeout: Option<Duration>,
+}
+
+unsafe impl Send for Server {}
+
+impl Server {
+    fn new(
+        udp_target: String,
+        udp_host: String,
+        udp_low_port: u16,
+        udp_high_port: u16,
+        secs: u64,
+    ) -> Server {
+        Server {
+            udp_target,
+            udp_host,
+            udp_low_port,
+            udp_high_port,
+            socket_timeout: match secs {
+                0 => None,
+                x => Some(Duration::from_secs(x)),
+            },
+        }
+    }
+
+    fn handle_client(&self, mut tcp_stream: TcpStream) -> std::io::Result<usize> {
+        tcp_stream.set_read_timeout(self.socket_timeout)?;
+
+        let mut port = self.udp_low_port;
+        let udp_socket = loop {
+            match UdpSocket::bind((&self.udp_host[..], port)) {
+                Ok(sock) => break sock,
+                Err(_) => {
+                    port += 1;
+                    if port > self.udp_high_port {
+                        panic!("cannot find free port, increase range?");
+                    }
+                }
+            }
+        };
+        udp_socket.set_read_timeout(self.socket_timeout)?;
+        udp_socket.connect(&self.udp_target)?;
+
+        let udp_socket_clone = udp_socket.try_clone().expect("clone udp_socket failed");
+        let mut tcp_stream_clone = tcp_stream.try_clone().expect("clone tcp_stream failed");
+        thread::spawn(move || {
+            let mut buf = [0u8; 2048];
+            loop {
+                match udp_socket_clone.recv(&mut buf) {
+                    Ok(len) => {
+                        println!("udp got len: {}", len);
+                        tcp_stream_clone
+                            .write(&buf[..len])
+                            .expect("cannot write to tcp_clone");
+                    }
+                    Err(e) => {
+                        println!("recv function failed: {:?}", e);
+                        break;
+                    }
+                }
+            }
+        });
+
+        let mut buf = [0u8; 2048];
+        loop {
+            match tcp_stream.read(&mut buf) {
+                Ok(len) => {
+                    println!("tcp got len: {}", len);
+                    udp_socket.send(&buf[..len])?;
+                }
+                Err(e) => {
+                    println!("Unable to read stream: {}", e);
+                    break;
+                }
+            }
+        }
+
+        Ok(0)
+    }
+}
+
+struct Args<'a> {
+    args: &'a Vec<String>,
+}
+
+impl<'a> Args<'a> {
+    fn new(args: &'a Vec<String>) -> Args {
+        Args { args }
+    }
+    fn get_str(&self, index: usize, def: &'a str) -> &'a str {
+        match self.args.get(index) {
+            Some(ret) => ret,
+            None => def,
+        }
+    }
+    fn get<T: FromStr>(&self, index: usize, def: T) -> T {
+        match self.args.get(index) {
+            Some(ret) => match ret.parse::<T>() {
+                Ok(ret) => ret,
+                Err(_) => def, // or panic
+            },
+            None => def,
+        }
+    }
+}
+
+fn main() {
+    let raw_args = env::args().collect();
+    let args = Args::new(&raw_args);
+    if args.get_str(1, "").contains("-h") {
+        println!(
+            "usage: {} [-h] [host, 127.0.0.1:5555] [udp_target, 127.0.0.1:51820] [udp_bind_host_range, 127.0.0.1:30000-40000] [socket_timeout, 0]",
+            args.get_str(0, "curl_bash")
+        );
+        return;
+    }
+    let host = args.get_str(1, "127.0.0.1:5555");
+
+    let udp_bind_host_range_str = args.get_str(3, "127.0.0.1:30000-40000");
+    let mut udp_bind_host_range = udp_bind_host_range_str.split(":");
+    let udp_host = udp_bind_host_range
+        .next()
+        .expect("udp_bind_host_range host invalid");
+    let mut udp_ports = udp_bind_host_range
+        .next()
+        .expect("udp_bind_host_range port range invalid")
+        .split("-");
+    let udp_low_port = udp_ports
+        .next()
+        .expect("udp_bind_host_range low port invalid")
+        .trim()
+        .parse::<u16>()
+        .expect("udp_bind_host_range low port invalid");
+    let udp_high_port = udp_ports
+        .next()
+        .expect("udp_bind_host_range low port invalid")
+        .trim()
+        .parse::<u16>()
+        .expect("udp_bind_host_range low port invalid");
+
+    let server = Arc::new(Server::new(
+        args.get_str(2, "127.0.0.1:51820").to_owned(),
+        udp_host.to_string(),
+        udp_low_port,
+        udp_high_port,
+        args.get(4, 0),
+    ));
+
+    println!(
+        "udp_target: {}, udp_bind_host_range: {}, socket_timeout: {:?}",
+        server.udp_target, udp_bind_host_range_str, server.socket_timeout,
+    );
+
+    let listener = TcpListener::bind(&host).unwrap();
+    println!("Listening for connections on {}", &host);
+
+    for stream in listener.incoming() {
+        match stream {
+            Ok(stream) => {
+                let server = server.clone();
+                thread::spawn(move || {
+                    server
+                        .handle_client(stream)
+                        .expect("error handling connection")
+                });
+            }
+            Err(e) => {
+                println!("Unable to connect: {}", e);
+            }
+        }
+    }
+}