Fixed wrong base62 encoding

This commit is contained in:
Dennis Schwerdel 2019-12-04 16:33:42 +01:00
parent 229db241de
commit 50058e60d0
8 changed files with 124 additions and 148 deletions

View File

@ -2,14 +2,15 @@
This project follows [semantic versioning](http://semver.org). This project follows [semantic versioning](http://semver.org).
### Unreleased ### v1.1.0 (2019-12-04)
- [added] Exchange peer timeout and adapt keepalive accordingly - [added] Exchange peer timeout and adapt keepalive accordingly
- [added] Reducing published peer timeout to 5 min when NAT is detected - [added] Reducing published peer timeout to 5 min when NAT is detected
- [added] Added more tests - [added] Added more tests
- [changed] Rust version 1.41.0 - [changed] Rust version 1.39.0
- [changed] Updated dependencies - [changed] Updated dependencies
- [fixed] Fixed potential startup dependency issue - [fixed] Fixed potential startup dependency issue
- [fixed] Fixed wrong base62 encoding
### v1.0.0 (2019-03-21) ### v1.0.0 (2019-03-21)

113
Cargo.lock generated
View File

@ -23,42 +23,6 @@ dependencies = [
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View File

@ -1,6 +1,6 @@
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@ -1,3 +1,15 @@
vpncloud (1.1.0) stable; urgency=medium
* [added] Exchange peer timeout and adapt keepalive accordingly
* [added] Reducing published peer timeout to 5 min when NAT is detected
* [added] Added more tests
* [changed] Rust version 1.41.0
* [changed] Updated dependencies
* [fixed] Fixed potential startup dependency issue
* [fixed] Fixed wrong base62 encoding
-- Dennis Schwerdel <schwerdel@googlemail.com> Thu, 04 Dec 2019 19:01:34 +0100
vpncloud (1.0.0) stable; urgency=medium vpncloud (1.0.0) stable; urgency=medium
* [added] Added ability to publish small beacons for rendezvous * [added] Added ability to publish small beacons for rendezvous

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@ -9,7 +9,7 @@ RUN useradd -ms /bin/bash user
USER user USER user
WORKDIR /home/user WORKDIR /home/user
ENV RUST=1.33.0 ENV RUST=1.39.0
RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain ${RUST} RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain ${RUST}

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@ -6,7 +6,7 @@ RUN useradd -ms /bin/bash user
USER user USER user
WORKDIR /home/user WORKDIR /home/user
ENV RUST=1.33.0 ENV RUST=1.39.0
RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain ${RUST} RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain ${RUST}

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@ -2,7 +2,6 @@
// Copyright (C) 2019-2019 Dennis Schwerdel // Copyright (C) 2019-2019 Dennis Schwerdel
// This software is licensed under GPL-3 or newer (see LICENSE.md) // This software is licensed under GPL-3 or newer (see LICENSE.md)
use base_62;
use ring::digest; use ring::digest;
use std::{ use std::{
@ -21,7 +20,7 @@ use std::{
thread thread
}; };
use super::util::{Encoder, TimeSource}; use super::util::{from_base62, to_base62, Encoder, TimeSource};
use std::net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6}; use std::net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6};
@ -90,11 +89,11 @@ impl<TS: TimeSource> BeaconSerializer<TS> {
} }
fn begin(&self) -> String { fn begin(&self) -> String {
base_62::encode(&self.get_keystream(TYPE_BEGIN, 0, 0))[0..5].to_string() to_base62(&self.get_keystream(TYPE_BEGIN, 0, 0))[0..5].to_string()
} }
fn end(&self) -> String { fn end(&self) -> String {
base_62::encode(&self.get_keystream(TYPE_END, 0, 0))[0..5].to_string() to_base62(&self.get_keystream(TYPE_END, 0, 0))[0..5].to_string()
} }
fn encrypt_data(&self, data: &mut Vec<u8>) { fn encrypt_data(&self, data: &mut Vec<u8>) {
// Note: the 1 byte seed is only meant to protect from random changes, // Note: the 1 byte seed is only meant to protect from random changes,
@ -152,11 +151,11 @@ impl<TS: TimeSource> BeaconSerializer<TS> {
data.extend_from_slice(&dat); data.extend_from_slice(&dat);
} }
self.encrypt_data(&mut data); self.encrypt_data(&mut data);
base_62::encode(&data) to_base62(&data)
} }
fn peerlist_decode(&self, data: &str, ttl_hours: Option<u16>) -> Vec<SocketAddr> { fn peerlist_decode(&self, data: &str, ttl_hours: Option<u16>) -> Vec<SocketAddr> {
let mut data = base_62::decode(data).expect("Invalid input"); let mut data = from_base62(data).expect("Invalid input");
let mut peers = Vec::new(); let mut peers = Vec::new();
let mut pos = 0; let mut pos = 0;
if data.len() < 4 { if data.len() < 4 {
@ -327,13 +326,13 @@ fn encode() {
let mut peers = Vec::new(); let mut peers = Vec::new();
peers.push(SocketAddr::from_str("1.2.3.4:5678").unwrap()); peers.push(SocketAddr::from_str("1.2.3.4:5678").unwrap());
peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap()); peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap());
assert_eq!("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", ser.encode(&peers)); assert_eq!("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", ser.encode(&peers));
peers.push(SocketAddr::from_str("[::1]:5678").unwrap()); peers.push(SocketAddr::from_str("[::1]:5678").unwrap());
assert_eq!("juWwKjF5qZG7PE5imnpi5XARaXnP3UsMsGBLxM4FNFDzvjlKt1SO55LN", ser.encode(&peers)); assert_eq!("3hRD8BKvg7jotek0FGLeYtIc1zj7jzPRyQscQAe9tCqnFJ0vyVfIxYMB", ser.encode(&peers));
let mut peers = Vec::new(); let mut peers = Vec::new();
peers.push(SocketAddr::from_str("1.2.3.4:5678").unwrap()); peers.push(SocketAddr::from_str("1.2.3.4:5678").unwrap());
peers.push(SocketAddr::from_str("6.6.6.6:54").unwrap()); peers.push(SocketAddr::from_str("6.6.6.6:54").unwrap());
assert_eq!("juWwKIgSqTammVFRNoIVzLPO0BEO55LN", ser.encode(&peers)); assert_eq!("3hRD86NwMC5dPp8bh5idzhMal4AIxYMB", ser.encode(&peers));
} }
#[test] #[test]
@ -343,11 +342,11 @@ fn decode() {
let mut peers = Vec::new(); let mut peers = Vec::new();
peers.push(SocketAddr::from_str("1.2.3.4:5678").unwrap()); peers.push(SocketAddr::from_str("1.2.3.4:5678").unwrap());
peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap()); peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap());
assert_eq!(format!("{:?}", peers), format!("{:?}", ser.decode("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", None))); assert_eq!(format!("{:?}", peers), format!("{:?}", ser.decode("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", None)));
peers.push(SocketAddr::from_str("[::1]:5678").unwrap()); peers.push(SocketAddr::from_str("[::1]:5678").unwrap());
assert_eq!( assert_eq!(
format!("{:?}", peers), format!("{:?}", peers),
format!("{:?}", ser.decode("juWwKjF5qZG7PE5imnpi5XARaXnP3UsMsGBLxM4FNFDzvjlKt1SO55LN", None)) format!("{:?}", ser.decode("3hRD8BKvg7jotek0FGLeYtIc1zj7jzPRyQscQAe9tCqnFJ0vyVfIxYMB", None))
); );
} }
@ -360,11 +359,11 @@ fn decode_split() {
peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap()); peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap());
assert_eq!( assert_eq!(
format!("{:?}", peers), format!("{:?}", peers),
format!("{:?}", ser.decode("juWwK-hj.VT:Yj bw\tJj\ntY(AZ)lM[fE]j7üIDäO55LN", None)) format!("{:?}", ser.decode("3hRD8-5V.3h:1P 0g\t5U\nn9(ZW)no[qR]Doü7ZäIxYMB", None))
); );
assert_eq!( assert_eq!(
format!("{:?}", peers), format!("{:?}", peers),
format!("{:?}", ser.decode("j -, \nuW--wKhjVTYjbwJjtYAZlMfEj7IDO(5}5ÖÄÜ\nLN", None)) format!("{:?}", ser.decode("3 -, \nhR--D85V3h1P0g5Un9ZWnoqRDo7ZI(x}YÖÄÜ\nMB", None))
); );
} }
@ -377,7 +376,7 @@ fn decode_offset() {
peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap()); peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap());
assert_eq!( assert_eq!(
format!("{:?}", peers), format!("{:?}", peers),
format!("{:?}", ser.decode("Hello World: juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN! End of the World", None)) format!("{:?}", ser.decode("Hello World: 3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB! End of the World", None))
); );
} }
@ -390,7 +389,7 @@ fn decode_multiple() {
peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap()); peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap());
assert_eq!( assert_eq!(
format!("{:?}", peers), format!("{:?}", peers),
format!("{:?}", ser.decode("juWwKkBEVBp9SsDiN3BO55LN juWwKtGGPQz1gXIBd68O55LN", None)) format!("{:?}", ser.decode("3hRD850fTOmqFffvcJEIxYMB 3hRD823uwTS47pupeONIxYMB", None))
); );
} }
@ -402,23 +401,23 @@ fn decode_ttl() {
peers.push(SocketAddr::from_str("1.2.3.4:5678").unwrap()); peers.push(SocketAddr::from_str("1.2.3.4:5678").unwrap());
peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap()); peers.push(SocketAddr::from_str("6.6.6.6:53").unwrap());
MockTimeSource::set_time(2000 * 3600); MockTimeSource::set_time(2000 * 3600);
assert_eq!(2, ser.decode("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", None).len()); assert_eq!(2, ser.decode("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", None).len());
MockTimeSource::set_time(2100 * 3600); MockTimeSource::set_time(2100 * 3600);
assert_eq!(2, ser.decode("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", None).len()); assert_eq!(2, ser.decode("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", None).len());
MockTimeSource::set_time(2005 * 3600); MockTimeSource::set_time(2005 * 3600);
assert_eq!(2, ser.decode("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", None).len()); assert_eq!(2, ser.decode("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", None).len());
MockTimeSource::set_time(1995 * 3600); MockTimeSource::set_time(1995 * 3600);
assert_eq!(2, ser.decode("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", None).len()); assert_eq!(2, ser.decode("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", None).len());
MockTimeSource::set_time(2000 * 3600); MockTimeSource::set_time(2000 * 3600);
assert_eq!(2, ser.decode("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", Some(24)).len()); assert_eq!(2, ser.decode("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", Some(24)).len());
MockTimeSource::set_time(1995 * 3600); MockTimeSource::set_time(1995 * 3600);
assert_eq!(2, ser.decode("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", Some(24)).len()); assert_eq!(2, ser.decode("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", Some(24)).len());
MockTimeSource::set_time(2005 * 3600); MockTimeSource::set_time(2005 * 3600);
assert_eq!(2, ser.decode("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", Some(24)).len()); assert_eq!(2, ser.decode("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", Some(24)).len());
MockTimeSource::set_time(2100 * 3600); MockTimeSource::set_time(2100 * 3600);
assert_eq!(0, ser.decode("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", Some(24)).len()); assert_eq!(0, ser.decode("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", Some(24)).len());
MockTimeSource::set_time(1900 * 3600); MockTimeSource::set_time(1900 * 3600);
assert_eq!(0, ser.decode("juWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", Some(24)).len()); assert_eq!(0, ser.decode("3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB", Some(24)).len());
} }
#[test] #[test]
@ -426,12 +425,12 @@ fn decode_invalid() {
MockTimeSource::set_time(2000 * 3600); MockTimeSource::set_time(2000 * 3600);
let ser = BeaconSerializer::<MockTimeSource>::new(b"vpnc", b"mysecretkey"); let ser = BeaconSerializer::<MockTimeSource>::new(b"vpnc", b"mysecretkey");
assert_eq!(0, ser.decode("", None).len()); assert_eq!(0, ser.decode("", None).len());
assert_eq!(0, ser.decode("juWwKO55LN", None).len()); assert_eq!(0, ser.decode("3hRD8IxYMB", None).len());
assert_eq!(0, ser.decode("juWwK--", None).len()); assert_eq!(0, ser.decode("3hRD8--", None).len());
assert_eq!(0, ser.decode("--O55LN", None).len()); assert_eq!(0, ser.decode("--IxYMB", None).len());
assert_eq!(0, ser.decode("juWwKhjVTYjbwJjtYAZXMfEj7IDO55LN", None).len()); assert_eq!(0, ser.decode("3hRD85V3h1P0g5Un8ZWnoqRDo7ZIxYMB", None).len());
assert_eq!(2, ser.decode("SGrivjuWwKhjVTYjbwJjtYAZlMfEj7IDO55LNjuWwK", None).len()); assert_eq!(2, ser.decode("IxYMB3hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMB3hRD8", None).len());
assert_eq!(2, ser.decode("juWwKjuWwKhjVTYjbwJjtYAZlMfEj7IDO55LN", None).len()); assert_eq!(2, ser.decode("3hRD83hRD85V3h1P0g5Un9ZWnoqRDo7ZIxYMBIxYMB", None).len());
} }

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@ -249,3 +249,79 @@ impl TimeSource for MockTimeSource {
MOCK_TIME.with(|t| t.load(Ordering::SeqCst) as Time) MOCK_TIME.with(|t| t.load(Ordering::SeqCst) as Time)
} }
} }
/// Helper function that multiplies the base62 data in buf[0..buflen] by 16 and adds m to it
fn base62_add_mult_16(buf: &mut [u8], mut buflen: usize, m: u8) -> usize {
let mut d: usize = m as usize;
for i in 0..buflen {
d += buf[i] as usize * 16;
buf[i] = (d % 62) as u8;
d /= 62;
}
assert!(d < 62);
if d > 0 {
buf[buflen] = d as u8;
buflen += 1;
}
buflen
}
const BASE62: [char; 62] = [
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
];
pub fn to_base62(data: &[u8]) -> String {
let l = data.len();
let mut buf = vec![0; l * 2];
let mut buflen = 0;
for b in data {
buflen = base62_add_mult_16(&mut buf, buflen, b / 16);
buflen = base62_add_mult_16(&mut buf, buflen, b % 16);
}
buf[0..buflen].reverse();
let mut result = String::with_capacity(buflen);
for b in &buf[0..buflen] {
result.push(BASE62[*b as usize]);
}
result
}
pub fn from_base62(data: &str) -> Result<Vec<u8>, char> {
let mut buf = Vec::with_capacity(data.len() / 2 + data.len() / 4);
for c in data.chars() {
let mut val = match c {
'0'..='9' => ((c as usize) % ('0' as usize)),
'A'..='Z' => ((c as usize) % ('A' as usize)) + 10,
'a'..='z' => ((c as usize) % ('a' as usize)) + 36,
_ => return Err(c)
};
for i in 0..buf.len() {
val += buf[i] as usize * 62;
buf[i] = (val % 256) as u8;
val /= 256;
}
if val > 0 {
buf.push(val as u8);
}
}
buf.reverse();
Ok(buf)
}
#[test]
fn base62() {
assert_eq!("", to_base62(&[0]));
assert_eq!("z", to_base62(&[61]));
assert_eq!("10", to_base62(&[62]));
assert_eq!("48", to_base62(&[1, 0]));
assert_eq!("1Xp7Ke", to_base62(b"Test"));
assert!(from_base62("").unwrap().is_empty());
assert_eq!(vec![61], from_base62("z").unwrap());
assert_eq!(vec![62], from_base62("10").unwrap());
assert_eq!(vec![1, 0], from_base62("48").unwrap());
assert_eq!(b"Test".to_vec(), from_base62("1Xp7Ke").unwrap());
}