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Matéo Duparc 2021-03-20 19:59:56 +01:00
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Cargo.lock
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[package]
name = "aira"
version = "0.0.1"
authors = ["Hardcore Sushi <hardcore.sushi@disroot.org>"]
edition = "2018"
[dependencies]
rand-8 = {package = "rand", version = "0.8.3"}
rand-7 = {package = "rand", version = "0.7.3"}
socket2 = "0.3.19"
ed25519-dalek = "1" #for singing
x25519-dalek = "1.1" #for shared secret
sha2 = "0.9.3"
hkdf = "0.10.0"
aes-gcm = "0.8.0"
hmac = "0.10.1"
hex = "0.4.3"
strum_macros = "0.20.1" #display enums
actix-web = "3"
tungstenite = "0.13.0" #websocket
serde = "1.0.124" #serialization
html-escape = "0.2.7"
dirs = "3.0"
uuid = { version = "0.8", features = ["v4"] }
webbrowser = "0.5.5"
astro-dnssd = "0.2.0" #mDNS advertiser
multicast_dns = "0.5" #mDNS browser
base64 = "0.13.0"
time = "0.2.25"
aes-gcm-siv = "0.9.0"
scrypt = "0.6.3"
zeroize = "1.2.0"
[dependencies.rusqlite]
version = "0.24.2"
features = ["bundled"]

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with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer network,
you should also make sure that it provides a way for users to get its source.
For example, if your program is a web application, its interface could display
a "Source" link that leads users to an archive of the code. There are many
ways you could offer source, and different solutions will be better for different
programs; see section 13 for the specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary. For
more information on this, and how to apply and follow the GNU AGPL, see <https://www.gnu.org/licenses/>.

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# AIRA
AIRA is peer-to-peer encrypted communication tool for local networks built on the [PSEC protocol](https://forge.chapril.org/hardcoresushi/PSEC). It allows to securely send text messages and files without any server or Internet access.
<img src="https://forge.chapril.org/hardcoresushi/AIRA/raw/branch/master/screenshot.png">
# Motivations
When people want to send a file from one computer to another located only meters apart, they usually send it via mail. This mail usually goes through many servers around the world before reaching its final destination.
Likewise, when people are lazy, they talk sometimes to their friends in the next room using centralized mobiles apps like Whatsapp. Their messages can be exported thousands of kilometers away to reach Facebook's servers where they are analysed with the aim of offering personalized ads and selling your data before being sent on the same way back to your friend's smartphone.
All this practices generate useless traffic, overload servers, often breach privacy but above all pollute a lot. This is why I decided to build a more ecological and private way to communicate with near devices. There are many awesome P2P projects built on top of the Internet, but none of them provide local-network communications that work even totally disconnected from the rest of the world. AIRA is the first to provide this capability.
# Disclaimer
AIRA is still under developement and is not ready for production usage yet. Not all features have been implemented and bugs are expected. Neither the code or the PSEC protocol received any security audit and therefore shouldn't be considered fully secure. AIRA is provided "as is", without any warranty of any kind.
# Features
- IPv4/v6 compatibility
- Cross-platform
- Web frontend that directly runs in your browser
- mDNS discovery
- Manual peer connection
- Database encryption
- Multi-identities
- Contact verification
- Free/Libre and Open Source
# Build
### Install Rust
```
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
```
### Download AIRA
```
git clone --depth=1 https://forge.chapril.org/hardcoresushi/AIRA.git && cd AIRA
```
### Build AIRA
```
cargo build
```
## What does AIRA stand for ?
The name AIRA was inspired by the name [GNU](https://www.gnu.org): "GNU's Not Unix". In the same way, AIRA stands for "AIRA Is a Recursive Acronym".

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use std::{io, io::Write, sync::Arc};
use crate::identity::Identity;
use crate::session_manager::SessionManager;
use text_io::read;
/*fn get_identity_or_create() -> identity::Identity {
match identity::get_identity() {
Ok(identity) => {identity}
Err(_) => {
identity::create_new_identidy("Bob").unwrap()
}
}
}*/
pub fn main(){
let identity = match Identity::get_identity() {
Ok(identity) => {identity}
Err(_) => {
println!("Creating new identity");
Identity::create_new_identidy("Bob").unwrap()
}
};
let session_manager = Arc::new(SessionManager::new(identity));
match SessionManager::start_listener(&session_manager) {
Ok(_) => {}
Err(e) => println!("{}", e.to_string())
}
SessionManager::start_receiver_loop(&session_manager);
let mut input = String::new();
while input != "exit" {
io::stdout().write(":~$ ".as_bytes()).unwrap();
io::stdout().flush().unwrap();
input = read!("{}\n");
let args: Vec<&str> = input.split(" ").collect();
if args[0] == "init" {
match session_manager.connect_to(args[1]) {
Ok(index) => {
println!("Connected !");
while input != "exit" {
io::stdout().write("BOB:~$ ".as_bytes()).unwrap();
io::stdout().flush().unwrap();
input = read!("{}\n");
match session_manager.send_to(&index, &input) {
Ok(_) => {
match session_manager.receive_from(index) {
Ok(msg) => println!("{}", std::str::from_utf8(&msg).unwrap()),
Err(e) => println!("{}", e.to_string())
}
}
Err(e) => println!("{}", e.to_string())
}
}
}
Err(e) => println!("{}", e.to_string())
}
} else if args[0] == "list" {
for (i, n) in session_manager.get_sessions() {
println!("{}: {}", i, n);
}
} else if args[0] != "exit" {
println!("?");
}
}
}

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pub const PORT: &str = "7530";
pub const APPLICATION_FOLDER: &str = "AIRA";
pub const HTTP_COOKIE_NAME: &str = "aira_auth";
pub const MUTEX_RELEASE_DELAY_MS: u64 = 100;

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use std::convert::TryInto;
use hkdf::Hkdf;
use sha2::Sha384;
use hmac::{Hmac, Mac, NewMac};
use scrypt::{scrypt, Params};
use rand_8::{RngCore, rngs::OsRng};
use aes_gcm::{aead::{Aead, generic_array::GenericArray}, NewAead};
use aes_gcm_siv::{Aes256GcmSiv};
use zeroize::Zeroize;
use strum_macros::Display;
use crate::utils::*;
pub const HASH_OUTPUT_LEN: usize = 48; //SHA384
const KEY_LEN: usize = 16;
pub const IV_LEN: usize = 12;
pub const AES_TAG_LEN: usize = 16;
const SALT_LEN: usize = 32;
const PASSWORD_HASH_LEN: usize = 32;
pub const MASTER_KEY_LEN: usize = 32;
pub fn iv_to_nonce(iv: &[u8], counter: &mut usize) -> Vec<u8> {
let mut counter_bytes = vec![0; 4];
counter_bytes.extend_from_slice(&counter.to_be_bytes());
let r: Vec<u8> = iv.iter().zip(counter_bytes.iter()).map(|(a, b)| a^b).collect();
*counter += 1;
r
}
fn hkdf_expand_label(key: &[u8], label: &str, context: Option<&[u8]>, okm: &mut [u8]) {
let hkdf = Hkdf::<Sha384>::from_prk(key).unwrap();
//can't set info conditionnally because of different array size
match context {
Some(context) => {
let info = [&label.len().to_be_bytes(), label.as_bytes(), &context.len().to_be_bytes(), context];
hkdf.expand_multi_info(&info, okm).unwrap();
}
None => {
let info = [&label.len().to_be_bytes(), label.as_bytes()];
hkdf.expand_multi_info(&info, okm).unwrap();
}
};
}
pub struct HandshakeKeys {
pub local_key: [u8; KEY_LEN],
pub local_iv: [u8; IV_LEN],
pub local_handshake_traffic_secret: [u8; HASH_OUTPUT_LEN],
pub peer_key: [u8; KEY_LEN],
pub peer_iv: [u8; IV_LEN],
pub peer_handshake_traffic_secret: [u8; HASH_OUTPUT_LEN],
pub handshake_secret: [u8; HASH_OUTPUT_LEN],
}
impl HandshakeKeys {
pub fn derive_keys(shared_secret: [u8; 32], handshake_hash: [u8; HASH_OUTPUT_LEN], i_am_bob: bool) -> HandshakeKeys {
let (handshake_secret, _) = Hkdf::<Sha384>::extract(None, &shared_secret);
let local_label = "handshake".to_owned() + if i_am_bob {"i_am_bob"} else {"i_am_alice"};
let mut local_handshake_traffic_secret = [0; HASH_OUTPUT_LEN];
hkdf_expand_label(handshake_secret.as_slice(), &local_label, Some(&handshake_hash), &mut local_handshake_traffic_secret);
let peer_label = "handshake".to_owned() + if i_am_bob {"i_am_alice"} else {"i_am_bob"};
let mut peer_handshake_traffic_secret = [0; HASH_OUTPUT_LEN];
hkdf_expand_label(handshake_secret.as_slice(), &peer_label, Some(&handshake_hash), &mut peer_handshake_traffic_secret);
let mut local_handshake_key = [0; KEY_LEN];
hkdf_expand_label(&local_handshake_traffic_secret, "key", None, &mut local_handshake_key);
let mut local_handshake_iv = [0; IV_LEN];
hkdf_expand_label(&local_handshake_traffic_secret, "iv", None, &mut local_handshake_iv);
let mut peer_handshake_key = [0; KEY_LEN];
hkdf_expand_label(&peer_handshake_traffic_secret, "key", None, &mut peer_handshake_key);
let mut peer_handshake_iv = [0; IV_LEN];
hkdf_expand_label(&peer_handshake_traffic_secret,"iv", None, &mut peer_handshake_iv);
HandshakeKeys {
local_key: local_handshake_key,
local_iv: local_handshake_iv,
local_handshake_traffic_secret: local_handshake_traffic_secret,
peer_key: peer_handshake_key,
peer_iv: peer_handshake_iv,
peer_handshake_traffic_secret: peer_handshake_traffic_secret,
handshake_secret: to_array_48(handshake_secret.as_slice())
}
}
}
pub struct ApplicationKeys {
pub local_key: [u8; KEY_LEN],
pub local_iv: [u8; IV_LEN],
pub peer_key: [u8; KEY_LEN],
pub peer_iv: [u8; IV_LEN],
}
impl ApplicationKeys {
pub fn derive_keys(handshake_secret: [u8; HASH_OUTPUT_LEN], handshake_hash: [u8; HASH_OUTPUT_LEN], i_am_bob: bool) -> ApplicationKeys {
let mut derived_secret = [0; HASH_OUTPUT_LEN];
hkdf_expand_label(&handshake_secret, "derived", None, &mut derived_secret);
let (master_secret, _) = Hkdf::<Sha384>::extract(Some(&derived_secret), b"");
let local_label = "application".to_owned() + if i_am_bob {"i_am_bob"} else {"i_am_alice"};
let mut local_application_traffic_secret = [0; HASH_OUTPUT_LEN];
hkdf_expand_label(&master_secret, &local_label, Some(&handshake_hash), &mut local_application_traffic_secret);
let peer_label = "application".to_owned() + if i_am_bob {"i_am_alice"} else {"i_am_bob"};
let mut peer_application_traffic_secret = [0; HASH_OUTPUT_LEN];
hkdf_expand_label(&master_secret, &peer_label, Some(&handshake_hash), &mut peer_application_traffic_secret);
let mut local_application_key = [0; KEY_LEN];
hkdf_expand_label(&local_application_traffic_secret, "key", None, &mut local_application_key);
let mut local_application_iv = [0; IV_LEN];
hkdf_expand_label(&local_application_traffic_secret, "iv", None, &mut local_application_iv);
let mut peer_application_key = [0; KEY_LEN];
hkdf_expand_label(&peer_application_traffic_secret, "key", None, &mut peer_application_key);
let mut peer_application_iv = [0; IV_LEN];
hkdf_expand_label(&peer_application_traffic_secret,"iv", None, &mut peer_application_iv);
ApplicationKeys {
local_key: local_application_key,
local_iv: local_application_iv,
peer_key: peer_application_key,
peer_iv: peer_application_iv,
}
}
}
pub fn compute_handshake_finished(local_handshake_traffic_secret: [u8; HASH_OUTPUT_LEN], handshake_hash: [u8; HASH_OUTPUT_LEN]) -> [u8; HASH_OUTPUT_LEN] {
let mut finished_key = [0; HASH_OUTPUT_LEN];
hkdf_expand_label(&local_handshake_traffic_secret, "finished", None, &mut finished_key);
let mut hmac = Hmac::<Sha384>::new_varkey(&finished_key).unwrap();
hmac.update(&handshake_hash);
hmac.finalize().into_bytes().as_slice().try_into().unwrap()
}
pub fn verify_handshake_finished(peer_handshake_finished: [u8; HASH_OUTPUT_LEN], peer_handshake_traffic_secret: [u8; HASH_OUTPUT_LEN], handshake_hash: [u8; HASH_OUTPUT_LEN]) -> bool {
let mut peer_finished_key = [0; HASH_OUTPUT_LEN];
hkdf_expand_label(&peer_handshake_traffic_secret, "finished", None, &mut peer_finished_key);
let mut hmac = Hmac::<Sha384>::new_varkey(&peer_finished_key).unwrap();
hmac.update(&handshake_hash);
hmac.verify(&peer_handshake_finished).is_ok()
}
pub fn generate_fingerprint(public_key: &[u8]) -> String {
let mut raw_fingerprint = [0; 16];
Hkdf::<Sha384>::new(None, public_key).expand(&[], &mut raw_fingerprint).unwrap();
hex::encode(raw_fingerprint).to_uppercase()
}
pub fn generate_master_key() -> [u8; MASTER_KEY_LEN] {
let mut master_key = [0; MASTER_KEY_LEN];
OsRng.fill_bytes(&mut master_key);
master_key
}
pub fn encrypt_data(data: &[u8], master_key: &[u8]) -> Result<Vec<u8>, CryptoError> {
if master_key.len() != MASTER_KEY_LEN {
return Err(CryptoError::InvalidLength);
}
let cipher = Aes256GcmSiv::new(GenericArray::from_slice(master_key));
let mut iv = [0; IV_LEN];
OsRng.fill_bytes(&mut iv); //use it for IV for now
let mut cipher_text = iv.to_vec();
cipher_text.extend(cipher.encrypt(GenericArray::from_slice(&iv), data).unwrap());
Ok(cipher_text)
}
#[derive(Display, Debug, PartialEq, Eq)]
pub enum CryptoError {
DecryptionFailed,
InvalidLength
}
pub fn decrypt_data(data: &[u8], master_key: &[u8]) -> Result<Vec<u8>, CryptoError> {
if data.len() <= IV_LEN || master_key.len() != MASTER_KEY_LEN {
return Err(CryptoError::InvalidLength);
}
let cipher = Aes256GcmSiv::new(GenericArray::from_slice(master_key));
match cipher.decrypt(GenericArray::from_slice(&data[..IV_LEN]), &data[IV_LEN..]) {
Ok(data) => {
Ok(data)
},
Err(_) => Err(CryptoError::DecryptionFailed)
}
}
fn scrypt_params() -> Params {
Params::new(13, 8, 1).unwrap()
}
pub fn encrypt_master_key(mut master_key: [u8; MASTER_KEY_LEN], password: &str) -> (
[u8; SALT_LEN], //salt
[u8; IV_LEN+MASTER_KEY_LEN+AES_TAG_LEN] //encrypted masterkey with IV
) {
let mut salt = [0; SALT_LEN];
OsRng.fill_bytes(&mut salt);
let mut password_hash = [0; PASSWORD_HASH_LEN];
scrypt(password.as_bytes(), &salt, &scrypt_params(), &mut password_hash).unwrap();
let mut output = [0; IV_LEN+MASTER_KEY_LEN+AES_TAG_LEN];
OsRng.fill_bytes(&mut output); //use it for IV for now
let cipher = Aes256GcmSiv::new(GenericArray::from_slice(&password_hash));
let encrypted_master_key = cipher.encrypt(GenericArray::from_slice(&output[..IV_LEN]), master_key.as_ref()).unwrap();
master_key.zeroize();
password_hash.zeroize();
encrypted_master_key.into_iter().enumerate().for_each(|i|{
output[IV_LEN+i.0] = i.1; //append encrypted master key to IV
});
(salt, output)
}
pub fn decrypt_master_key(encrypted_master_key: &[u8], password: &str, salt: &[u8]) -> Result<[u8; MASTER_KEY_LEN], CryptoError> {
if encrypted_master_key.len() != IV_LEN+MASTER_KEY_LEN+AES_TAG_LEN || salt.len() != SALT_LEN {
return Err(CryptoError::InvalidLength);
}
let mut password_hash = [0; PASSWORD_HASH_LEN];
scrypt(password.as_bytes(), salt, &scrypt_params(), &mut password_hash).unwrap();
let cipher = Aes256GcmSiv::new(GenericArray::from_slice(&password_hash));
let result = match cipher.decrypt(GenericArray::from_slice(&encrypted_master_key[..IV_LEN]), &encrypted_master_key[IV_LEN..]) {
Ok(master_key) => {
if master_key.len() == MASTER_KEY_LEN {
Ok(master_key.try_into().unwrap())
} else {
return Err(CryptoError::InvalidLength)
}
},
Err(_) => Err(CryptoError::DecryptionFailed)
};
password_hash.zeroize();
result
}

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use std::thread;
use astro_dnssd::register::DNSServiceBuilder;
use multicast_dns::discovery::{DiscoveryManager, DiscoveryListeners, ResolveListeners};
use crate::{constants, print_error};
const SERVICE_TYPE: &str = "_aira._tcp";
pub fn advertise_me(){
thread::spawn(||{
let mut service = DNSServiceBuilder::new(SERVICE_TYPE)
.with_name("AIRA Node")
.with_port(constants::PORT.parse().unwrap())
.build()
.unwrap();
match service.register(|reply| match reply {
Ok(_) => {},
Err(e) => println!("Error registering: {:?}", e)
}) {
Ok(_) => {
loop {
service.process_result();
}
}
Err(e) => println!("Unable to register mDNS service. You won't be discoverable by others peers. {}", e)
};
});
}
pub fn discover_peers<F: Fn(&DiscoveryManager, String)>(on_service_discovered: F){
let discovery_manager = DiscoveryManager::new();
let result = discovery_manager.discover_services(SERVICE_TYPE, DiscoveryListeners{
on_service_discovered: Some(&|service| {
discovery_manager.resolve_service(service, ResolveListeners{
on_service_resolved: Some(&|service| {
match service.address {
Some(service_ip) => on_service_discovered(&discovery_manager, service_ip),
None => println!("Service discovered without IP address: {:?}", service)
};
})
});
}),
on_all_discovered: Some(&|| {
discovery_manager.stop_service_discovery();
})
});
if result.is_err() {
print_error(result.err().unwrap());
}
}

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function generate_avatar(name){
let span = document.createElement("span");
if (typeof name == "undefined"){
span.appendChild(document.createTextNode("?"));
} else {
span.appendChild(document.createTextNode(name[0].toUpperCase()));
}
let div = document.createElement("div");
div.classList.add("avatar");
div.appendChild(span);
div.appendChild(document.createElement("div")); //used for background
return div;
}

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input[type="text"], input[type="password"] {
background-color: var(--transparent);
color: white;
padding: 15px;
border: 2px solid var(--accent);
border-radius: 5px;
box-sizing: border-box;
width: 100%;
margin: 0;
}
.avatar {
position: relative;
margin-right: .5em;
width: 1.5em;
height: 1.5em;
}
.avatar div {
width: 100%;
height: 100%;
background-color: var(--accent);
border-radius: 100%;
}
.avatar span {
position: absolute;
z-index: 1;
display: flex;
align-items: center;
justify-content: center;
height: 100%;
width: 100%;
margin: 0;
}

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<svg xmlns="http://www.w3.org/2000/svg" enable-background="new 0 0 24 24" viewBox="0 0 24 24" fill="#FILL_COLOR"><g><rect fill="none" height="24" width="24"/></g><g><path d="M14,8c0-2.21-1.79-4-4-4S6,5.79,6,8s1.79,4,4,4S14,10.21,14,8z M17,10v2h6v-2H17z M2,18v2h16v-2c0-2.66-5.33-4-8-4 S2,15.34,2,18z"/></g></svg>
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="#FILL_COLOR"><path d="M0 0h24v24H0z" fill="none"/><path d="M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm-2 16l-4-4 1.41-1.41L10 14.17l6.59-6.59L18 9l-8 8z"/></svg>
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="#FILL_COLOR"><path d="M0 0h24v24H0z" fill="none"/><path d="M1 21h22L12 2 1 21zm12-3h-2v-2h2v2zm0-4h-2v-4h2v4z"/></svg>
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>AIRA</title>
<link rel="stylesheet" href="/static/commons/style.css">
<style>
:root {
--accent: #FF3C00;
--transparent: #00000000;
}
html {
height: 100%;
font-family: Arial, Helvetica, Sans-Serif;
color: white;
}
body {
margin: 0;
height: 100%;
}
main {
display: grid;
grid-template-columns: 25% auto;
height: 100%;
}
.panel {
padding-left: 20px;
padding-right: 20px;
display: flex;
flex-direction: column;
}
ul {
list-style-type: none;
padding: 0;
margin: 0;
}
button {
background-color: var(--transparent);
border: none;
cursor: pointer;
}
button::after {
background-color: #8E99A4;
border-radius: 100%;
display: block;
width: 20px;
height: 20px;
padding: 8px;
}
button:hover::after {
background-color: var(--accent);
}
input[type="file"] {
display: none;
}
.file_picker {
display: flex;
align-items: center;
cursor: pointer;
}
.file_picker::after {
content: url("/static/imgs/icons/attach/FF3C00");
width: 2em;
}
.popup {
position: fixed;
top: 40%;
transform: translateY(-50%);
left: 0;
right: 0;
margin: auto;
width: 40%;
box-sizing: border-box;
padding: 20px 70px;
background-color: #2B2F31;
border-radius: 10px;
text-align: center;
font-size: 1.3em;
}
.popup h2::before {
content: url("/static/imgs/icons/warning/FF3C00");
width: 9%;
display: inline-block;
vertical-align: middle;
}
.popup .buttons {
display: flex;
justify-content: center;
}
.popup button {
background-color: #52585C;
color: white;
cursor: pointer;
padding: 15px 30px;
border-radius: 8px;
margin-left: 25px;
margin-right: 25px;
font-weight: bold;
}
.popup button:hover {
background-color: var(--accent);
}
.section_title {
margin-left: 8px;
font-weight: bold;
opacity: 0.5;
}
#left_panel {
background-color: #1D2228;
}
#right_panel {
background-color: #15191E;
display: flex;
flex-direction: column;
overflow: hidden;
}
#me {
border-bottom: 2px solid var(--accent);
padding: 10px;
display: flex;
align-items: center;
font-size: 1.7em;
}
#me p {
flex-grow: 1;
margin: 0;
font-weight: bold;
}
#left_panel ul:last-of-type, #msg_log {
flex-grow: 1;
}
#left_panel ul li {
font-size: 1.1em;
padding: 15px;
height: 50px;
box-sizing: border-box;
margin-left: 8px;
margin-bottom: 10px;
border-radius: 8px;
cursor: pointer;
display: flex;
align-items: center;
}
#left_panel ul li>p {
display: inline;
font-weight: bold;
}
#left_panel ul li .avatar {
width: 2em;
height: 2em;
}
#left_panel ul li:hover, #left_panel ul li.current {
background-color: #333940;
}
#left_panel ul li.output {
}
#left_panel ul li.input {
}
#left_panel ul li p::after {
content: url("/static/imgs/icons/warning/FF3C00");
display: inline-block;
width: 1em;
margin-left: .3em;
vertical-align: middle;
}
#left_panel ul li.is_contact p::after {
content: unset;
}
#left_panel ul li.is_verified p::after {
content: url("/static/imgs/icons/verified/FF3C00");
}
#connect_box {
margin-bottom: 20px;
}
#chat_header {
flex-direction: row;
align-items: center;
padding: 5px 20px;
font-size: 1.5em;
}
#chat_header>div {
display: flex;
align-items: center;
flex-grow: 1;
}
#chat_header>div>p {
font-weight: bold;
}
#chat_header p::after {
content: url("/static/imgs/icons/warning/FF3C00");
display: inline-block;
width: 1.2em;
vertical-align: middle;
padding-left: .3em;
}
#chat_header.is_contact p::after {
content: unset;
}
#chat_header.is_verified p::after {
content: url("/static/imgs/icons/verified/FF3C00");
}
#add_contact::after {
content: url("/static/imgs/icons/add_contact");
}
#remove_contact::after {
content: url("/static/imgs/icons/remove_contact");
}
#chat_header.is_contact #verify::after {
content: url("/static/imgs/icons/verified");
}
#chat_header.is_verified #verify::after {
content: unset;
}
#logout::after {
content: url("/static/imgs/icons/logout");
}
#message_input {
border: unset;
padding: 1em;
font-size: 1.1em;
}
#message_box {
border-top: 2px solid var(--accent);
margin-bottom: 0;
}
#msg_log {
font-size: 1.1em;
overflow-y: scroll;
white-space: pre;
}
#msg_log li>div:first-of-type { /*Message header*/
display: flex;
align-items: center;
}
#msg_log p.name {
margin: 0;
color: var(--accent);
font-weight: bold;
}
#msg_log li>div:last-of-type { /*Message content container*/
margin-left: 2em;
}
#msg_log li p {
margin-top: 0;
}
#msg_log .file {
display: flex;
align-items: end;
margin-bottom: 1em;
border-left: 3px solid var(--accent);
padding-left: .5em;
margin-top: .5em;
}
#msg_log .file div { /*Title and filename container*/
display: flex;
flex-direction: column;
}
#msg_log .file h4 {
margin: 0;
}
#msg_log .file p {
margin: 0;
color: var(--accent);
}
#msg_log .file a::after {
content: url("/static/imgs/icons/download/FF3C00");
display: block;
width: 2em;
margin-left: 1em;
}
#message_box, #chat_header, #msg_log {
display: none;
}
</style>
</head>
<body>
<main id="main">
<div id="left_panel" class="panel">
<div id="me">
<p>IDENTITY_NAME</p>
<button id="logout" title="Log out"></button>
</div>
<p class="section_title">Online peers:</p>
<ul id="online_sessions">
</ul>
<p class="section_title">Offline contacts:</p>
<ul id="offline_sessions">
</ul>
<div id="connect_box">
<p class="section_title">Add a new peer by IP:</p>
<input type="text" id="ip_input" placeholder="Enter IP address">
</div>
</div>
<div id="right_panel" class="panel">
<div id="chat_header">
<div></div>
<button id="verify" title="Verify"></button>
<button id="add_contact" title="Add to contact"></button>
<button id="remove_contact" title="Remove from contact"></button>
</div>
<ul id="msg_log">
</ul>
<div id="message_box">
<input type="text" id="message_input" placeholder="Send a message...">
<label title="Send file" class="file_picker">
<input type="file" id="attach_file">
</label>
</div>
</div>
</main>
<script src="/static/libs/linkify.min.js"></script>
<script src="/static/libs/linkify-element.min.js"></script>
<script src="/static/commons/script.js"></script>
<script>
"use strict";
const ENTER_KEY_CODE = 13;
const identity_name = "IDENTITY_NAME";
let socket = null;
let current_chat_index = -1;
let sessions_data = new Map();
let msg_history = new Map();
function on_click_session(event) {
let index = event.currentTarget.getAttribute("data-index");
if (index != null){
current_chat_index = index;
refresh_sessions();
display_header();
if (sessions_data.get(index).is_online){
document.getElementById("message_box").style.display = "flex";
}
display_history();
}
}
let ip_input = document.getElementById("ip_input");
ip_input.addEventListener("keyup", function(event){
if (event.keyCode === ENTER_KEY_CODE) {
socket.send("connect "+ip_input.value);
ip_input.value = "";
}
});
let message_input = document.getElementById("message_input");
message_input.addEventListener("keyup", function(event){
if (event.keyCode === ENTER_KEY_CODE) {
socket.send("send "+current_chat_index+" "+message_input.value);
msg_history.get(current_chat_index).push([true, false, message_input.value]);
message_input.value = "";
display_history(current_chat_index);
}
});
document.getElementById("add_contact").onclick = function(){
socket.send("contact "+current_chat_index+" "+sessions_data.get(current_chat_index).name);
sessions_data.get(current_chat_index).is_contact = true;
display_header();
refresh_sessions();
}
document.getElementById("remove_contact").onclick = function(){
socket.send("uncontact "+current_chat_index);
let session = sessions_data.get(current_chat_index);
session.is_contact = false;
session.is_verified = false;
display_header();
refresh_sessions();
}
document.getElementById("verify").onclick = function(){
socket.send("fingerprints "+current_chat_index);
}
document.getElementById("logout").onclick = function(){
display_popup("<p>If you log out, you will no longer receive messages and pending messages will not be sent until you log in back.</p><p>Do you really want to log out ?</p>",
"<button onclick=\"logout();\">Log out</button>"
);
}
document.getElementById("attach_file").onchange = function(event){
let file = event.target.files[0];
if (file.size > 45000000) { //45MB
display_popup("<p>The file is too large. Please select only files under 45MB.</p>");
} else {
let reader = new FileReader();
reader.onload = function(e){
socket.send("file "+current_chat_index+" "+file.name);
let data = e.target.result;
socket.send(data);
}
reader.readAsArrayBuffer(file);
}
}
socket = new WebSocket("ws://"+location.hostname+":WEBSOCKET_PORT/ws");
socket.onopen = function() {
console.log("Connected");
};
socket.onmessage = function(msg){
if (typeof msg.data == "string"){
console.log("Message: "+msg.data);
let args = msg.data.split(" ");
switch (args[0]){
case "connected":
on_connected(args[1]);
break;
case "disconnected":
on_disconnected(args[1]);
break;
case "new_session":
on_new_session(args[1]);
break;
case "new_message":
on_message_received(args[1], args.slice(2).join(" "));
break;
case "load_sent_msg":
on_msg_load(args[1], args.slice(2).join(" "));
break;
case "load_sent_file":
on_file_load(args[1], args[2], args.slice(3).join(" "));
break;
case "name_told":
on_name_told(args[1], args.slice(2).join(" "));
break;
case "is_contact":
on_is_contact(args[1], args[2], args.slice(3).join(" "));
break;
case "fingerprints":
on_fingerprints(args[1], args[2]);
break;
case "file":
on_file_received(args[1], args[2], args.slice(3).join(" "));
break;
case "file_sent":
on_file_sent(args[1], args[2], args.slice(3).join(" "));
break;
}
} else { //receiving file
on_file_re
}
}
socket.onclose = function(){
console.log("Disconnected");
}
let me = document.getElementById("me");
me.insertBefore(generate_avatar(identity_name), me.firstChild);
function on_connected(index){
if (sessions_data.has(index)){
sessions_data.get(index).is_online = true;
refresh_sessions();
} else {
add_session(index, undefined, true, false, false, true);
}
}
function on_new_session(index){
if (sessions_data.has(index)){
let session = sessions_data.get(index);
session.is_online = true;
session.outgoing = false;
refresh_sessions();
} else {
add_session(index, undefined, false, false, false, true);
}
}
function on_name_told(index, name){
sessions_data.get(index).name = name;
if (index == current_chat_index) {
display_header();
}
refresh_sessions();
}
function on_is_contact(index, str_verified, name){
let verified = (str_verified === "true");
if (sessions_data.has(index)){
let session = sessions_data.get(index);
session.is_contact = true;
session.is_verified = verified;
on_name_told(index, name);
} else {
add_session(index, name, true, true, verified, false);
}
}
function on_message_received(index, msg){
msg_history.get(index).push([false, false, msg]);
if (current_chat_index == index){
display_history();
}
}
function on_msg_load(index, msg){
msg_history.get(index).push([true, false, msg]);
if (current_chat_index == index){
display_history();
}
}
function on_file_load(index, uuid, file_name){
msg_history.get(index).push([true, true, [uuid, file_name]]);
if (current_chat_index == index){
display_history();
}
}
function on_disconnected(index){
if (current_chat_index == index){
document.getElementById("message_box").style.display = "none";
}
let session = sessions_data.get(index);
if (session.is_contact){
session.is_online = false;
} else {
sessions_data.delete(index);
if (current_chat_index == index){
current_chat_index = -1;
}
}
refresh_sessions();
}
function on_fingerprints(local, peer){
let beautify_fingerprints = function(f){
for (let i=4; i<f.length; i+=5){
f = f.slice(0, i)+" "+f.slice(i);
}
return f;
};
display_popup("<p>Compare the following fingerprints by a trusted way of communication (such as real life) before clicking on Verify.</p><p>Local fingerprint:</p><pre>"+beautify_fingerprints(local)+"</pre><p>Peer fingerprint:</p><pre>"+beautify_fingerprints(peer)+"</pre>",
"<button onclick=\"verify();\">Verified</button>"
);
}
function on_file_received(index, uuid, file_name){
msg_history.get(index).push([false, true, [uuid, file_name]]);
if (current_chat_index == index){
display_history();
}
}
function on_file_sent(index, uuid, file_name){
msg_history.get(index).push([true, true, [uuid, file_name]]);
if (current_chat_index == index){
display_history();
}
}
function add_session(index, name, outgoing, is_contact, is_verified, is_online){
sessions_data.set(index, {
"name": name,
"outgoing": outgoing,
"is_contact": is_contact,
"is_verified": is_verified,
"is_online": is_online,
});
msg_history.set(index, []);
refresh_sessions();
}
function refresh_sessions(){
let online_sessions = document.getElementById("online_sessions");
online_sessions.innerHTML = "";
let offline_sessions = document.getElementById("offline_sessions");
offline_sessions.innerHTML = "";
sessions_data.forEach(function (session, index){
let session_element = generate_session(index, session.outgoing, session.is_contact, session.is_verified, session.name);
if (session.is_online){
online_sessions.appendChild(session_element);
} else {
offline_sessions.appendChild(session_element) ;
}
});
}
function verify(){
socket.send("verify "+current_chat_index);
sessions_data.get(current_chat_index).is_verified = true;
remove_popup();
display_header();
refresh_sessions();
}
function logout(){
window.location = "/logout";
}
function display_header(){
let chat_header = document.getElementById("chat_header");
let session = sessions_data.get(current_chat_index);
chat_header.children[0].innerHTML = "";
chat_header.children[0].appendChild(generate_avatar(session.name));
chat_header.children[0].appendChild(generate_name(session.name));
chat_header.style.display = "flex";
if (session.is_contact){ //is_contact
chat_header.classList.add("is_contact");
document.getElementById("add_contact").style.display = "none";
document.getElementById("remove_contact").style.display = "block";
} else {
chat_header.classList.remove("is_contact");
document.getElementById("remove_contact").style.display = "none";
document.getElementById("add_contact").style.display = "block";
}
if (session.is_verified){
chat_header.classList.add("is_verified");
} else {
chat_header.classList.remove("is_verified");
}
}
function display_popup(content, button){
let popup_content = "<h2>Warning!</h2>"+content+"<div class=\"buttons\"><button onclick=\"remove_popup();\">";
if (typeof button == "undefined"){
popup_content += "OK</button></div>";
} else {
popup_content += "Cancel</button>"+button+"</div>";
}
let popup = document.createElement("div");
popup.classList.add("popup");
popup.innerHTML = popup_content;
let main = document.getElementsByTagName("main")[0];
main.insertBefore(popup, main.firstChild);
}
function remove_popup(){
document.getElementsByClassName("popup")[0].remove();
}
function generate_name(name){
let p = document.createElement("p");
if (typeof name == "undefined"){
p.appendChild(document.createTextNode("Unknown"));
} else {
p.appendChild(document.createTextNode(name));
}
return p;
}
function generate_session(index, outgoing, is_contact, is_verified, name){
let li = document.createElement("li");
li.setAttribute("data-index", index);
if (outgoing) {
li.classList.add("outgoing");
} else {
li.classList.add("incomming");
}
if (is_contact) {
li.classList.add("is_contact");
}
if (is_verified) {
li.classList.add("is_verified");
}
if (index == current_chat_index){
li.classList.add("current");
}
li.appendChild(generate_avatar(name));
li.appendChild(generate_name(name));
li.onclick = on_click_session;
return li;
}
function generate_msg_header(name){
let text = document.createTextNode(name);
let p = document.createElement("p");
p.appendChild(text);
p.classList.add("name");
let div = document.createElement("div");
div.appendChild(generate_avatar(name));
div.appendChild(p);
return div;
}
function generate_message(name, msg){
let text = document.createTextNode(msg);
let p = document.createElement("p");
p.appendChild(text);
let div = document.createElement("div");
div.appendChild(linkifyElement(p));
let li = document.createElement("li");
li.appendChild(generate_msg_header(name))
li.appendChild(div);
return li;
}
function generate_file(name, outgoing, file_info){
let content = "<li>"+generate_msg_header(name)+"<div class=\"file\"><div><h4>";
if (outgoing) {
content += "File sent:";
} else {
content += "File received:";
}
content += "</h4><p>"+file_info[1]+"</p></div>";
if (file_info[0] !== "None"){
content += "<a href=\"/load_file?uuid="+file_info[0]+"&file_name="+encodeURIComponent(file_info[1])+"\" target=\"_blank\"></a>";
}
content += "</div></li>";
return content;
}
function display_history(){
let msg_log = document.getElementById("msg_log");
msg_log.style.display = "block";
msg_log.innerHTML = "";
msg_history.get(current_chat_index).forEach(entry => {
let name;
if (entry[0]){ //outgoing msg
name = identity_name;
} else {
name = sessions_data.get(current_chat_index).name;
}
if (entry[1]){ //is file
msg_log.innerHTML += generate_file(name, entry[0], entry[2]);
} else {
msg_log.appendChild(generate_message(name, entry[2]));
}
});
msg_log.scrollTop = msg_log.scrollHeight;
}
function get_session_li_by_index(index){
["online_sessions", "offline_sessions"].forEach(function(id){
let sessions = document.getElementById(id);
for (let i = 0; i < sessions.children.length; i++) {
let li = sessions.children[i];
if (li.getAttribute("data-index") == index){
return li;
}
}
});
}
</script>
</body>
</html>

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"use strict";!function(e,t){var n=function(t){function n(e,t,n){var r=n[n.length-1];e.replaceChild(r,t);for(var i=n.length-2;i>=0;i--)e.insertBefore(n[i],r),r=n[i]}function r(e,t,n){for(var r=[],i=e,a=Array.isArray(i),o=0,i=a?i:i[Symbol.iterator]();;){var l;if(a){if(o>=i.length)break;l=i[o++]}else{if(o=i.next(),o.done)break;l=o.value}var s=l;if("nl"===s.type&&t.nl2br)r.push(n.createElement("br"));else if(s.isLink&&t.check(s)){var f=t.resolve(s),c=f.formatted,d=f.formattedHref,u=f.tagName,v=f.className,h=f.target,m=f.events,g=f.attributes,p=n.createElement(u);if(p.setAttribute("href",d),v&&p.setAttribute("class",v),h&&p.setAttribute("target",h),g)for(var b in g)p.setAttribute(b,g[b]);if(m)for(var y in m)p.addEventListener?p.addEventListener(y,m[y]):p.attachEvent&&p.attachEvent("on"+y,m[y]);p.appendChild(n.createTextNode(c)),r.push(p)}else r.push(n.createTextNode(s.toString()))}return r}function i(e,t,a){if(!e||e.nodeType!==c)throw new Error("Cannot linkify "+e+" - Invalid DOM Node type");var s=t.ignoreTags;if("A"===e.tagName||l.contains(s,e.tagName))return e;for(var u=e.firstChild;u;){var v=void 0,h=void 0,m=void 0;switch(u.nodeType){case c:i(u,t,a);break;case d:if(v=u.nodeValue,h=o(v),0===h.length||1===h.length&&h[0]instanceof f)break;m=r(h,t,a),n(e,u,m),u=m[m.length-1]}u=u.nextSibling}return e}function a(t,n){var r=arguments.length>2&&void 0!==arguments[2]&&arguments[2];try{r=r||document||e&&e.document||global&&global.document}catch(a){}if(!r)throw new Error("Cannot find document implementation. If you are in a non-browser environment like Node.js, pass the document implementation as the third argument to linkifyElement.");return n=new s(n),i(t,n,r)}var o=t.tokenize,l=t.options,s=l.Options,f=t.parser.TOKENS.TEXT,c=1,d=3;return a.helper=i,a.normalize=function(e){return new s(e)},a}(t);e.linkifyElement=n}(window,linkify);

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>AIRA - Login</title>
<link rel="stylesheet" href="/static/commons/style.css">
<style>
:root {
--accent: #FF3C00;
--transparent: #00000000;
}
html {
height: 100%;
font-family: Arial, Helvetica, Sans-Serif;
color: white;
}
body {
margin: 0;
height: 100%;
background-image: url("/static/imgs/wallpaper");
background-repeat: no-repeat;
background-position: center;
background-color: black;
}
main {
max-width: 900px;
background-color: #2B2F31;
border-radius: 10px;
position: absolute;
top: 20vh;
left: 0;
right: 0;
margin: auto;
padding-bottom: 20px;
}
h1, main>h3, #error_msg {
text-align: center;
}
h1 {
font-size: 3em;
margin-bottom: 0;
}
main>h3 {
font-style: italic;
color: #7E8183;
}
#error_msg {
font-size: 1.2em;
font-weight: bold;
margin-bottom: 0;
}
#panel_container {
display: grid;
grid-template-columns: 50% 50%;
position: relative;
}
input[type="text"], input[type="password"] {
margin-bottom: 20px;
}
button {
background-color: #52585C;
color: white;
cursor: pointer;
padding: 15px 20%;
border: none;
border-radius: 8px;
display: block;
margin: auto;
}
button:hover {
background-color: var(--accent);
}
.panel {
padding: 10px 50px;
}
#separator {
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
margin: auto;
background-color: var(--accent);
height: 30%;
width: 2px;
}
label {
background-color: #32383C;
padding: 20px;
border-radius: 8px;
margin-bottom: 10px;
display: grid;
grid-template-columns: auto 0 min-content;
grid-gap: 0.5em;
align-items: center;
}
label:hover {
background-color: #42484C;
}
label>div {
display: flex;
align-items: center;
}
label .avatar {
width: 2em;
height: 2em;
font-size: 1.3em;
}
input[type="radio"] {
opacity: 0;
width: 0;
height: 0;
}
.radio_checkmark {
display: flex;
width: 1.5em;
height: 1.5em;
background-color: #52585C;
border-radius: 50%;
align-items: center;
justify-content: center;
}
input[type="radio"]:checked + .radio_checkmark {
background-color: #282D2F;
}
input[type="radio"]:checked + .radio_checkmark::after {
display: block;
}
.radio_checkmark::after {
display: none;
content: "";
width: .5em;
height: .5em;
border-radius: 50%;
background-color: var(--accent);
}
#left_panel.no_identity {
display: none;
}
p {
color: red;
}
main.no_identity #panel_container {
display: block;
}
main.no_identity #left_panel, main.no_identity #separator {
display: none;
}
main.no_identity {
max-width: 500px;
}
</style>
</head>
<body>
<main id="main">
<h1>AIRA</h1>
<h3>Local network secure P2P communications</h3>
<p id="error_msg">ERROR_MSG</p>
<div id="panel_container">
<div id="left_panel" class="panel">
<h2>Login:</h2>
<form id="login_form" method="POST" action="/login">
<div id="identities">
</div>
<input name="password" type="password" placeholder="Password">
<button type="submit">Login</button>
</form>
</div>
<span id="separator"></span>
<div id="right_panel" class="panel">
<h2>Create New Identity:</h2>
<form method="POST">
<input type="text" name="name" placeholder="Name" required>
<input type="password" name="password" placeholder="Password">
<input type="password" name="password_confirm" placeholder="Password (Confirmation)">
<button type="submit">Create</button>
</form>
</div>
</div>
</main>
<script src="/static/commons/script.js"></script>
<script>
const identities = [IDENTITIES];
if (identities.length > 0) {
let identities_container = document.getElementById("identities");
identities.forEach(function(identity) {
let div = document.createElement("div");
div.appendChild(generate_avatar(identity[1]));
let radio_label = document.createElement("span");
radio_label.classList.add("radio_label");
radio_label.appendChild(document.createTextNode(identity[1]));
div.appendChild(radio_label);
let label = document.createElement("label");
label.appendChild(div);
let input = document.createElement("input");
input.type = "radio";
input.name = "uuid";
input.value = identity[0];
input.required = true;
label.appendChild(input);
let radio_checkmark = document.createElement("span");
radio_checkmark.classList.add("radio_checkmark");
label.appendChild(radio_checkmark);
identities_container.appendChild(label);
});
} else {
let main = document.getElementById("main");
main.classList.add("no_identity");
}
</script>
</body>
</html>

376
src/identity.rs Normal file
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use std::{convert::TryInto, path::Path, str::FromStr};
use crypto::CryptoError;
use ed25519_dalek::{Keypair, Signer, SIGNATURE_LENGTH, PUBLIC_KEY_LENGTH};
use rusqlite::{Connection, NO_PARAMS, params};
use dirs;
use utils::to_uuid_bytes;
use uuid::Uuid;
use zeroize::Zeroize;
use crate::{constants, crypto, print_error, utils};
const DB_NAME: &str = "Identities.db";
const IDENTITY_TABLE: &str = "identities";
const CONTACTS_TABLE: &str = "contacts";
const FILES_TABLE: &str = "files";
fn bool_to_byte(b: bool) -> u8 {
if b { 75 } else { 30 } //completely arbitrary values
}
fn byte_to_bool(b: u8) -> Result<bool, ()> {
if b == 75 {
Ok(true)
} else if b == 30 {
Ok(false)
} else {
Err(())
}
}
fn get_database_path() -> String {
Path::new(&dirs::config_dir().unwrap()).join(constants::APPLICATION_FOLDER).join(DB_NAME).to_str().unwrap().to_owned()
}
struct EncryptedIdentity {
name: String,
encrypted_keypair: Vec<u8>,
salt: Vec<u8>,
encrypted_master_key: Vec<u8>
}
fn get_identity_by_uuid(uuid: Uuid) -> Result<Option<EncryptedIdentity>, rusqlite::Error>{
let db = Connection::open(get_database_path())?;
let mut stmt = db.prepare(&("SELECT name, key, salt, masterkey FROM ".to_owned()+IDENTITY_TABLE+" WHERE uuid=?1"))?;
let mut rows = stmt.query(vec![&uuid.as_bytes()[..]])?;
Ok(match rows.next()? {
Some(row) => {
let name: Vec<u8> = row.get(0)?;
Some(
EncryptedIdentity {
name: std::str::from_utf8(name.as_slice()).unwrap().to_owned(),
encrypted_keypair: row.get(1)?,
salt: row.get(2)?,
encrypted_master_key: row.get(3)?
}
)
}
None => None
})
}
pub struct Contact {
pub uuid: Uuid,
pub public_key: [u8; PUBLIC_KEY_LENGTH],
pub name: String,
pub verified: bool,
}
pub struct Identity {
pub uuid: Uuid,
pub name: String,
key: Keypair,
pub master_key: [u8; crypto::MASTER_KEY_LEN]
}
impl Identity {
pub fn sign(&self, input: &[u8]) -> [u8; SIGNATURE_LENGTH] {
self.key.sign(input).to_bytes()
}
pub fn get_public_key(&self) -> [u8; PUBLIC_KEY_LENGTH] {
self.key.public.to_bytes()
}
fn get_database_path(&self) -> String {
Path::new(&dirs::config_dir().unwrap()).join(constants::APPLICATION_FOLDER).join(self.uuid.to_string()+".db").to_str().unwrap().to_owned()
}
pub fn add_contact(&self, name: String, public_key: [u8; PUBLIC_KEY_LENGTH]) -> Result<Contact, rusqlite::Error> {
let db = Connection::open(self.get_database_path())?;
db.execute(&("CREATE TABLE IF NOT EXISTS ".to_owned()+CONTACTS_TABLE+"(uuid BLOB PRIMARY KEY, name BLOB, key BLOB, verified BLOB)"), NO_PARAMS)?;
let contact_uuid = Uuid::new_v4();
let encrypted_name = crypto::encrypt_data(name.as_bytes(), &self.master_key).unwrap();
let encrypted_public_key = crypto::encrypt_data(&public_key, &self.master_key).unwrap();
let encrypted_verified = crypto::encrypt_data(&[bool_to_byte(false)], &self.master_key).unwrap();
db.execute(&("INSERT INTO ".to_owned()+CONTACTS_TABLE+" (uuid, name, key, verified) VALUES (?1, ?2, ?3, ?4)"), vec![&contact_uuid.as_bytes()[..], encrypted_name.as_slice(), encrypted_public_key.as_slice(), encrypted_verified.as_slice()])?;
Ok(Contact {
uuid: contact_uuid,
public_key: public_key,
name: name,
verified: false
})
}
pub fn remove_contact(&self, uuid: &Uuid) -> Result<(), rusqlite::Error> {
let db = Connection::open(self.get_database_path())?;
db.execute(&("DELETE FROM ".to_owned()+CONTACTS_TABLE+" WHERE uuid=?"), &[&uuid.as_bytes()[..]])?;
db.execute(&format!("DROP TABLE IF EXISTS \"{}\"", uuid), NO_PARAMS)?;
db.execute(&format!("DELETE FROM {} WHERE contact_uuid=?", FILES_TABLE), &[&uuid.as_bytes()[..]])?;
Ok(())
}
pub fn set_verified(&self, uuid: &Uuid) -> Result<(), rusqlite::Error> {
let db = Connection::open(self.get_database_path())?;
let encrypted_verified = crypto::encrypt_data(&[bool_to_byte(true)], &self.master_key).unwrap();
db.execute(&format!("UPDATE {} SET verified=?1 WHERE uuid=?2", CONTACTS_TABLE), &[encrypted_verified.as_slice(), &uuid.as_bytes()[..]])?;
Ok(())
}
pub fn load_contacts(&self) -> Option<Vec<Contact>> {
match Connection::open(self.get_database_path()) {
Ok(db) => {
match db.prepare(&("SELECT uuid, name, key, verified FROM ".to_owned()+CONTACTS_TABLE)) {
Ok(mut stmt) => {
let mut rows = stmt.query(NO_PARAMS).unwrap();
let mut contacts = Vec::new();
while let Some(row) = rows.next().unwrap() {
let encrypted_public_key: Vec<u8> = row.get(2).unwrap();
match crypto::decrypt_data(encrypted_public_key.as_slice(), &self.master_key){
Ok(public_key) => {
if public_key.len() == PUBLIC_KEY_LENGTH {
let encrypted_name: Vec<u8> = row.get(1).unwrap();
match crypto::decrypt_data(encrypted_name.as_slice(), &self.master_key) {
Ok(name) => {
let encrypted_verified: Vec<u8> = row.get(3).unwrap();
match crypto::decrypt_data(encrypted_verified.as_slice(), &self.master_key){
Ok(verified) => {
let uuid: Vec<u8> = row.get(0).unwrap();
match to_uuid_bytes(&uuid) {
Some(uuid_bytes) => {
contacts.push(Contact {
uuid: Uuid::from_bytes(uuid_bytes),
public_key: public_key.try_into().unwrap(),
name: std::str::from_utf8(name.as_slice()).unwrap().to_owned(),
verified: byte_to_bool(verified[0]).unwrap()
})
}
None => {}
}
}
Err(e) => print_error(e)
}
}
Err(e) => print_error(e)
}
} else {
print_error("Invalid public key length: database corrupted");
}
}
Err(e) => print_error(e)
}
}
Some(contacts)
}
Err(e) => {
print_error(e);
None
}
}
}
Err(e) => {
print_error(e);
None
}
}
}
pub fn clear_temporary_files(&self) -> Result<usize, rusqlite::Error> {
let db = Connection::open(self.get_database_path())?;
db.execute(&format!("DELETE FROM {} WHERE contact_uuid IS NULL", FILES_TABLE), NO_PARAMS)
}
pub fn load_file(&self, uuid: Uuid) -> Option<Vec<u8>> {
match Connection::open(self.get_database_path()) {
Ok(db) => {
match db.prepare(&format!("SELECT uuid, data FROM \"{}\"", FILES_TABLE)) {
Ok(mut stmt) => {
let mut rows = stmt.query(NO_PARAMS).unwrap();
while let Some(row) = rows.next().unwrap() {
let encrypted_uuid: Vec<u8> = row.get(0).unwrap();
match crypto::decrypt_data(encrypted_uuid.as_slice(), &self.master_key){
Ok(test_uuid) => {
if test_uuid == uuid.as_bytes() {
let encrypted_data: Vec<u8> = row.get(1).unwrap();
match crypto::decrypt_data(encrypted_data.as_slice(), &self.master_key) {
Ok(data) => return Some(data),
Err(e) => print_error(e)
}
}
}
Err(e) => print_error(e)
}
}
None
}
Err(e) => {
print_error(e);
None
}
}
}
Err(e) => {
print_error(e);
None
}
}
}
pub fn store_file(&self, contact_uuid: Option<Uuid>, data: &[u8]) -> Result<Uuid, rusqlite::Error> {
let db = Connection::open(self.get_database_path())?;
db.execute(&format!("CREATE TABLE IF NOT EXISTS \"{}\" (contact_uuid BLOB, uuid BLOB, data BLOB)", FILES_TABLE), NO_PARAMS)?;
let file_uuid = Uuid::new_v4();
let encrypted_uuid = crypto::encrypt_data(file_uuid.as_bytes(), &self.master_key).unwrap();
let encrypted_data = crypto::encrypt_data(data, &self.master_key).unwrap();
let query = format!("INSERT INTO \"{}\" (contact_uuid, uuid, data) VALUES (?1, ?2, ?3)", FILES_TABLE);
match contact_uuid {
Some(uuid) => db.execute(&query, params![&uuid.as_bytes()[..], &encrypted_uuid, &encrypted_data])?,
None => db.execute(&query, params![None as Option<Vec<u8>>, &encrypted_uuid, &encrypted_data])?
};
Ok(file_uuid)
}
pub fn store_msg(&self, contact_uuid: &Uuid, outgoing: bool, data: &[u8]) -> Result<(), rusqlite::Error> {
let db = Connection::open(self.get_database_path())?;
db.execute(&format!("CREATE TABLE IF NOT EXISTS \"{}\" (outgoing BLOB, data BLOB)", contact_uuid), NO_PARAMS)?;
let outgoing_byte: u8 = bool_to_byte(outgoing);
let encrypted_outgoing = crypto::encrypt_data(&[outgoing_byte], &self.master_key).unwrap();
let encrypted_data = crypto::encrypt_data(data, &self.master_key).unwrap();
db.execute(&format!("INSERT INTO \"{}\" (outgoing, data) VALUES (?1, ?2)", contact_uuid), vec![encrypted_outgoing, encrypted_data])?;
Ok(())
}
pub fn load_msgs(&self, contact_uuid: &Uuid) -> Option<Vec<(bool, Vec<u8>)>> {
match Connection::open(self.get_database_path()) {
Ok(db) => {
match db.prepare(&format!("SELECT outgoing, data FROM \"{}\"", contact_uuid)) {
Ok(mut stmt) => {
let mut rows = stmt.query(NO_PARAMS).unwrap();
let mut msgs = Vec::new();
while let Some(row) = rows.next().unwrap() {
let encrypted_outgoing: Vec<u8> = row.get(0).unwrap();
match crypto::decrypt_data(encrypted_outgoing.as_slice(), &self.master_key){
Ok(outgoing) => {
match byte_to_bool(outgoing[0]) {
Ok(outgoing) => {
let encrypted_data: Vec<u8> = row.get(1).unwrap();
match crypto::decrypt_data(encrypted_data.as_slice(), &self.master_key) {
Ok(data) => {
msgs.push(
(
outgoing,
data
)
)
},
Err(e) => print_error(e)
}
}
Err(_) => {}
}
}
Err(e) => print_error(e)
}
}
Some(msgs)
}
Err(e) => {
print_error(e);
None
}
}
}
Err(e) => {
print_error(e);
None
}
}
}
pub fn zeroize(&mut self){
self.master_key.zeroize();
self.key.secret.zeroize();
}
pub fn get_identity(uuid: &str, password: &str) -> Result<Identity, String> {
let uuid = Uuid::from_str(&uuid).unwrap();
match get_identity_by_uuid(uuid) {
Ok(encrypted_identity) => {
match encrypted_identity {
Some(encrypted_identity) => {
match crypto::decrypt_master_key(encrypted_identity.encrypted_master_key.as_slice(), password, encrypted_identity.salt.as_slice()) {
Ok(master_key) => {
match crypto::decrypt_data(encrypted_identity.encrypted_keypair.as_slice(), &master_key) {
Ok(keypair) => {
Ok(Identity{
uuid: uuid,
name: encrypted_identity.name,
key: Keypair::from_bytes(&keypair[..]).unwrap(),
master_key: master_key
})
}
Err(e) => {
print_error(e);
Err("Database corrupted".to_owned())
}
}
}
Err(e) => {
Err(match e {
CryptoError::DecryptionFailed => "Bad password".to_owned(),
CryptoError::InvalidLength => "Database corrupted".to_owned()
})
}
}
}
None => {
Err("No such identity".to_owned())
}
}
}
Err(e) => {
Err(e.to_string())
}
}
}
pub fn get_identities() -> Result<Vec<(Uuid, String)>, rusqlite::Error> {
let db = Connection::open(get_database_path())?;
let mut stmt = db.prepare(&("SELECT uuid, name FROM ".to_owned()+IDENTITY_TABLE))?;
let mut rows = stmt.query(NO_PARAMS)?;
let mut identities = Vec::new();
while let Some(row) = rows.next()? {
let uuid: Vec<u8> = row.get(0)?;
let name: Vec<u8> = row.get(1)?;
match to_uuid_bytes(&uuid) {
Some(uuid_bytes) => identities.push(
(
Uuid::from_bytes(uuid_bytes),
std::str::from_utf8(name.as_slice()).unwrap().to_owned()
)
),
None => {}
}
}
Ok(identities)
}
pub fn create_new_identidy(name: &str, password: &str) -> Result<Identity, rusqlite::Error> {
let db = Connection::open(get_database_path())?;
db.execute(&("CREATE TABLE IF NOT EXISTS ".to_owned()+IDENTITY_TABLE+"(uuid BLOB PRIMARY KEY, name TEXT, key BLOB, salt BLOB, masterkey BLOB)"), NO_PARAMS)?;
let uuid = Uuid::new_v4();
let keypair = Keypair::generate(&mut rand_7::rngs::OsRng);
let master_key = crypto::generate_master_key();
let encrypted_keypair = crypto::encrypt_data(&keypair.to_bytes(), &master_key).unwrap();
let (salt, encrypted_master_key) = crypto::encrypt_master_key(master_key, password);
db.execute(&("INSERT INTO ".to_owned()+IDENTITY_TABLE+" (uuid, name, key, salt, masterkey) VALUES (?1, ?2, ?3, ?4, ?5)"), vec![&uuid.as_bytes()[..], name.as_bytes(), encrypted_keypair.as_slice(), &salt, &encrypted_master_key]).unwrap();
Ok(Identity {
uuid: uuid,
name: name.to_owned(),
key: keypair,
master_key: master_key
})
}
}

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src/main.rs Normal file
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mod identity;
mod crypto;
mod session_manager;
mod utils;
mod ui_interface;
mod constants;
mod discovery;
use std::{collections::HashMap, env, fmt::Display, fs, io, net::{TcpStream, TcpListener}, path::Path, str::FromStr, sync::{RwLock, Mutex, Arc}, thread, thread::sleep, time::Duration};
use actix_web::{http::{header, CookieBuilder}, App, HttpRequest, HttpResponse, HttpMessage, HttpServer, web, web::Data};
use rand_8::{RngCore, rngs::OsRng};
use session_manager::SessionError;
use tungstenite::{
WebSocket,
accept,
};
use serde::{Deserialize, Serialize};
use utils::escape_double_quote;
use uuid::Uuid;
use crate::identity::Identity;
use crate::session_manager::{SessionManager, protocol};
use crate::ui_interface::UiConnection;
fn start_websocket_server(global_vars: &Arc<RwLock<GlobalVars>>) -> u16 {
let websocket_bind_addr = env::var("AIRA_WEBSOCKET_ADDR").unwrap_or("127.0.0.1".to_owned());
let websocket_port = env::var("AIRA_WEBSOCKET_PORT").unwrap_or("0".to_owned());
let server = TcpListener::bind(websocket_bind_addr+":"+&websocket_port).unwrap();
let websocket_port = server.local_addr().unwrap().port();
let global_vars_clone = Arc::clone(global_vars);
thread::spawn(move || {
for stream in server.incoming() {
let stream = stream.unwrap();
stream.set_read_timeout(Some(Duration::from_millis(100))).unwrap();
match accept(stream) {
Ok(websocket) => {
websocket_worker(websocket, &global_vars_clone);
}
Err(e) => print_error(e)
}
}
});
websocket_port
}
fn on_connected(index: usize, session_manager: &Arc<SessionManager>, ui_connection: &Arc<Mutex<UiConnection>>){
let mut ui_connection = ui_connection.lock().unwrap();
ui_connection.on_connected(index);
session_manager.handle_new_session(&index, ui_connection);
}
fn handle_connect(ip: &str, session_manager: &Arc<SessionManager>, ui_connection: &Arc<Mutex<UiConnection>>){
match session_manager.connect_to(ip){
Ok(index) => {
on_connected(index, session_manager, ui_connection);
}
Err(e) => {
if e != SessionError::AlreadyConnected && e != SessionError::IsUs {
print_error(e)
}
}
}
}
fn websocket_worker(websocket: WebSocket<TcpStream>, global_vars: &Arc<RwLock<GlobalVars>>){
let ui_connection = Arc::new(Mutex::new(UiConnection::new(websocket)));
let global_vars_read = global_vars.read().unwrap();
global_vars_read.session_manager.set_ui_connection(&ui_connection);
if global_vars_read.is_backend_running { //ui reconnection
global_vars_read.session_manager.list_sessions().into_iter().for_each(|index|{
on_connected(index, &global_vars_read.session_manager, &ui_connection);
});
} else {
match SessionManager::start_listener(&global_vars_read.session_manager) {
Ok(_) => {}
Err(e) => println!("{}. You won't be able to receive incomming connections from other peers.", e)
}
SessionManager::start_receiver_loop(&global_vars_read.session_manager);
discovery::advertise_me();
drop(global_vars_read);
global_vars.write().unwrap().is_backend_running = true;
}
let global_vars_read = global_vars.read().unwrap();
global_vars_read.session_manager.list_contacts().into_iter().for_each(|contact|{
let mut ui_connection_locked = ui_connection.lock().unwrap();
ui_connection_locked.set_as_contact(contact.0, &contact.1, contact.2);
match global_vars_read.session_manager.load_msgs(&contact.0) {
Some(msgs) => {
ui_connection_locked.load_msgs(&contact.0, msgs);
}
None => {}
}
});
global_vars_read.session_manager.get_saved_msgs().into_iter().for_each(|entry| {
ui_connection.lock().unwrap().on_received(&entry.0, &entry.1);
});
let session_manager_clone = Arc::clone(&global_vars_read.session_manager);
let ui_connection_clone = Arc::clone(&ui_connection);
thread::spawn(move || {
discovery::discover_peers(|discovery_manager, ip| {
println!("New peer discovered: {}", ip);
if ui_connection_clone.lock().unwrap().is_valid {
handle_connect(&ip, &session_manager_clone, &ui_connection_clone);
} else {
discovery_manager.stop_service_discovery();
}
});
});
loop {
let mut ui_connection_locked = ui_connection.lock().unwrap();
let msg_result = ui_connection_locked.read_message();
drop(ui_connection_locked); //release mutex
match msg_result {
Ok(msg) => {
let args: Vec<&str> = msg.split(" ").collect();
match args[0] {
"connect" => {
handle_connect(args[1], &global_vars_read.session_manager, &ui_connection);
}
"send" => {
let buffer = protocol::new_message(args[2..].join(" "));
let index: usize = args[1].parse().unwrap();
match global_vars_read.session_manager.send_to(&index, &buffer){
Ok(_) => {
if global_vars_read.session_manager.is_contact(&index) {
match global_vars_read.session_manager.store_msg(&index, true, &buffer) {
Ok(_) => {},
Err(e) => print_error(e)
}
}
}
Err(e) => print_error(e)
}
}
"contact" => {
let index: usize = args[1].parse().unwrap();
match global_vars_read.session_manager.add_contact(index, args[2..].join(" ")) {
Ok(_) => {},
Err(e) => print_error(e)
}
}
"uncontact" => {
let index: usize = args[1].parse().unwrap();
match global_vars_read.session_manager.remove_contact(&index) {
Ok(_) => {},
Err(e) => print_error(e)
}
}
"fingerprints" => {
let index: usize = args[1].parse().unwrap();
let (local, peer) = global_vars_read.session_manager.get_public_keys(&index);
let local = crypto::generate_fingerprint(&local);
let peer = crypto::generate_fingerprint(&peer);
ui_connection.lock().unwrap().fingerprints(&local, &peer);
}
"verify" => {
let index: usize = args[1].parse().unwrap();
match global_vars_read.session_manager.set_verified(&index) {
Ok(_) => {},
Err(e) => print_error(e)
}
}
"file" => {
let index: usize = args[1].parse().unwrap();
let file_name = args[2..].join(" ");
let mut ui_connection_locked = ui_connection.lock().unwrap();
let buffer = ui_connection_locked.read_binary();
drop(ui_connection_locked);
match buffer {
Ok(buffer) => {
match global_vars_read.session_manager.send_to(&index, &protocol::file(&file_name, &buffer)) {
Ok(_) => {
if global_vars_read.session_manager.is_contact(&index) {
match global_vars_read.session_manager.store_file(&index, &buffer) {
Ok(file_uuid) => {
ui_connection.lock().unwrap().file_sent(index, &file_name, Some(file_uuid.to_string()));
match global_vars_read.session_manager.store_msg(&index, true, &[&[protocol::Headers::FILE][..], file_uuid.as_bytes(), &file_name.into_bytes()].concat()) {
Ok(_) => {}
Err(e) => print_error(e)
}
}
Err(e) => print_error(e)
}
} else {
ui_connection.lock().unwrap().file_sent(index, &file_name, None);
}
}
Err(e) => print_error(e)
}
}
Err(e) => print_error(e)
}
}
_ => println!("Unknown: {}", msg)
}
}
Err(e) => {
match e {
tungstenite::Error::Io(ref e) => {
if e.kind() != io::ErrorKind::WouldBlock {
print_error(e)
}
}
tungstenite::Error::ConnectionClosed => {
println!("Websocket connection closed");
ui_connection.lock().unwrap().is_valid = false;
return
}
_ => print_error(e)
}
}
}
sleep(Duration::from_millis(constants::MUTEX_RELEASE_DELAY_MS)); //pause let other threads use ui_connection
}
}
#[derive(Deserialize, Serialize, Debug)]
struct FileInfo {
uuid: String,
file_name: String,
}
fn handle_load_file(req: HttpRequest, file_info: web::Query<FileInfo>) -> HttpResponse {
println!("Load file request from: {}", req.peer_addr().unwrap());
match req.cookie(constants::HTTP_COOKIE_NAME) {
Some(cookie) => {
let global_vars = req.app_data::<Data<Arc<RwLock<GlobalVars>>>>().unwrap();
let global_vars = global_vars.read().unwrap();
match global_vars.http_session_manager.get_name_from_cookie(cookie.value()) {
Some(_) => {
match Uuid::from_str(&file_info.uuid) {
Ok(uuid) => {
match global_vars.session_manager.load_file(uuid) {
Some(buffer) => {
return HttpResponse::Ok().header("Content-Disposition", format!("attachment; filename=\"{}\"", escape_double_quote(html_escape::decode_html_entities(&file_info.file_name).to_string()))).content_type("application/octet-stream").body(buffer);
}
None => {}
}
}
Err(e) => print_error(e)
}
}
None => {}
}
}
None => {}
}
HttpResponse::NotFound().finish()
}
fn handle_logout(req: HttpRequest) -> HttpResponse {
println!("Logout request from: {}", req.peer_addr().unwrap());
match req.cookie(constants::HTTP_COOKIE_NAME) {
Some(cookie) => {
let global_vars = req.app_data::<Data<Arc<RwLock<GlobalVars>>>>().unwrap();
let mut global_vars_write = global_vars.write().unwrap();
global_vars_write.http_session_manager.remove(cookie.value());
global_vars_write.session_manager.stop();
global_vars_write.is_backend_running = false;
HttpResponse::Found().header(header::LOCATION, "/").finish()
}
None => HttpResponse::Unauthorized().finish()
}
}
fn login(identity: Identity, global_vars: &Arc<RwLock<GlobalVars>>) -> HttpResponse {
let mut global_vars = global_vars.write().unwrap();
let cookie_value = global_vars.http_session_manager.register(identity.name.to_string());
if match global_vars.session_manager.get_identity_uuid() {
Some(uuid) => uuid != identity.uuid,
None => true
} {
global_vars.session_manager.set_identity(Some(identity));
}
let cookie = CookieBuilder::new(constants::HTTP_COOKIE_NAME, cookie_value)
.http_only(true)
.max_age(time::Duration::hours(4)
).finish();
HttpResponse::Found().header(header::LOCATION, "/").set_header(header::SET_COOKIE, cookie.to_string()).finish()
}
fn handle_login(req: HttpRequest, params: web::Form<LoginParams>) -> HttpResponse {
println!("Login request from: {}", req.peer_addr().unwrap());
match Identity::get_identity(&params.uuid, &params.password) {
Ok(identity) => {
let global_vars = req.app_data::<Data<Arc<RwLock<GlobalVars>>>>().unwrap();
match identity.clear_temporary_files() {
Ok(n) => println!("Deleted {} files", n),
Err(e) => print_error(e)
}
login(identity, global_vars.get_ref())
}
Err(e) => {
let body = get_login_body(Some(&e.to_string()));
HttpResponse::NotFound().body(body)
}
}
}
fn get_login_body(error_msg: Option<&str>) -> String {
let mut formated_identities = String::new();
match Identity::get_identities(){
Ok(identities) => {
for i in 0..identities.len() {
let uuid = identities[i].0.to_string();
formated_identities += &format!("[\"{}\", \"{}\"]", uuid, identities[i].1);
if i != identities.len()-1 {
formated_identities += ", ";
}
}
}
Err(e) => {
print_error(e)
}
};
include_str!("frontend/login.html")
.replace("IDENTITIES", &formated_identities).replace("ERROR_MSG", &match error_msg {
Some(error_msg) => format!("Error: {}.", error_msg),
None => String::new()
})
}
fn handle_create(req: HttpRequest, params: web::Form<CreateParams>) -> HttpResponse {
println!("Create request from: {}", req.peer_addr().unwrap());
if params.password == params.password_confirm {
match Identity::create_new_identidy(&params.name, &params.password) {
Ok(identity) => {
let global_vars = req.app_data::<Data<Arc<RwLock<GlobalVars>>>>().unwrap();
login(identity, global_vars.get_ref())
}
Err(e) => {
print_error(&e);
let body = get_login_body(Some(&e.to_string()));
HttpResponse::Ok().body(body)
}
}
} else {
let body = get_login_body(Some("Passwords don't match"));
HttpResponse::Ok().body(body)
}
}
fn index(req: HttpRequest) -> HttpResponse {
println!("GET request from: {}", req.peer_addr().unwrap());
let body = match req.cookie(constants::HTTP_COOKIE_NAME) {
Some(cookie) => {
let global_vars = req.app_data::<Data<Arc<RwLock<GlobalVars>>>>().unwrap();
let global_vars = global_vars.write().unwrap();
match global_vars.http_session_manager.get_name_from_cookie(cookie.value()) {
Some(name) => {
include_str!("frontend/index.html")
.replace("WEBSOCKET_PORT", &global_vars.websocket_port.to_string())
.replace("IDENTITY_NAME", &name)
}
None => get_login_body(None)
}
}
None => get_login_body(None)
};
HttpResponse::Ok().body(body)
}
const JS_CONTENT_TYPE: &str = "text/javascript";
fn handle_static(req: HttpRequest) -> HttpResponse {
println!("Static: {}", req.path());
let splits: Vec<&str> = req.path()[1..].split("/").collect();
if splits[0] == "static" {
let mut response_builder = HttpResponse::Ok();
match splits[1] {
"imgs" => {
if splits[2] == "icons" && splits.len() <= 5 {
let color = if splits.len() == 5 {
splits[4]
} else {
"none"
};
match match splits[3] {
"verified" => Some(include_str!("frontend/imgs/icons/verified.svg")),
"add_contact" => Some(include_str!("frontend/imgs/icons/add_contact.svg")),
"remove_contact" => Some(include_str!("frontend/imgs/icons/remove_contact.svg")),
"logout" => Some(include_str!("frontend/imgs/icons/logout.svg")),
"warning" => Some(include_str!("frontend/imgs/icons/warning.svg")),
"attach" => Some(include_str!("frontend/imgs/icons/attach.svg")),
"download" => Some(include_str!("frontend/imgs/icons/download.svg")),
_ => None
} {
Some(body) => {
response_builder.content_type("image/svg+xml");
return response_builder.body(body.replace("FILL_COLOR", color))
}
None => {}
}
} else if splits.len() == 3 {
response_builder.content_type("image/jpeg");
match splits[2] {
"wallpaper" => return response_builder.body(&include_bytes!("frontend/imgs/wallpaper.jpeg")[..]),
_ => {}
}
}
}
"commons" => {
if splits.len() == 3 {
match splits[2] {
"script.js" => return response_builder.content_type(JS_CONTENT_TYPE).body(include_str!("frontend/commons/script.js")),
"style.css" => return response_builder.body(include_str!("frontend/commons/style.css")),
_ => {}
}
}
}
"libs" => {
if splits.len() == 3 {
match match splits[2] {
"linkify.min.js" => Some(include_str!("frontend/libs/linkify.min.js")),
"linkify-html.min.js" => Some(include_str!("frontend/libs/linkify-html.min.js")),
"linkify-element.min.js" => Some(include_str!("frontend/libs/linkify-element.min.js")),
_ => None
} {
Some(body) => return response_builder.content_type(JS_CONTENT_TYPE).body(body),
None => {}
}
}
}
_ => {}
}
}
HttpResponse::NotFound().finish()
}
#[actix_web::main]
async fn start_http_server(global_vars: Arc<RwLock<GlobalVars>>) -> io::Result<()> {
let http_bind_addr = env::var("AIRA_HTTP_ADDR").unwrap_or("127.0.0.1".to_owned());
let http_port = env::var("AIRA_HTTP_PORT").unwrap_or("0".to_owned());
let server = HttpServer::new(move || {
let global_vars_clone = global_vars.clone();
App::new()
.data(global_vars_clone)
.service(web::resource("/")
.route(web::get().to(index))
.route(web::post().to(handle_create))
)
.route("/login", web::post().to(handle_login))
.route("/load_file", web::get().to(handle_load_file))
.route("/static/.*", web::get().to(handle_static))
.route("/logout", web::get().to(handle_logout))
}
).bind(http_bind_addr+":"+&http_port)?;
let url = "http://127.0.0.1:".to_owned()+&server.addrs().get(0).unwrap().port().to_string();
println!("AIRA started on: {}", url);
if webbrowser::open(&url).is_err() {
println!("Failed to open browser. Please open the link manually.");
}
server.run().await
}
#[derive(Serialize, Deserialize)]
struct LoginParams {
uuid: String,
password: String
}
#[derive(Serialize, Deserialize)]
struct CreateParams {
name: String,
password: String,
password_confirm: String
}
struct HttpSessionsManager {
http_sessions: HashMap<String, String>
}
impl HttpSessionsManager {
pub fn new() -> HttpSessionsManager {
HttpSessionsManager {
http_sessions: HashMap::new()
}
}
pub fn register(&mut self, identity_name: String) -> String {
let mut raw_cookie = [0; 32];
OsRng.fill_bytes(&mut raw_cookie);
let cookie = base64::encode(raw_cookie);
self.http_sessions.insert(cookie.clone(), identity_name);
cookie
}
pub fn remove(&mut self, cookie: &str) {
self.http_sessions.remove(cookie);
}
pub fn get_name_from_cookie(&self, cookie_value: &str) -> Option<String> {
Some(self.http_sessions.get(cookie_value)?.clone())
}
}
/*impl Debug for HttpSessionsManager {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str("{\n")?;
for (k, v) in self.http_sessions.read().unwrap().iter() {
f.write_str(&format!("\t{} : {}", k, v))?;
}
f.write_str("\n}")
}
}*/
struct GlobalVars {
session_manager: Arc<SessionManager>,
is_backend_running: bool,
websocket_port: u16,
http_session_manager: HttpSessionsManager,
}
fn main() {
match fs::create_dir(Path::new(&dirs::config_dir().unwrap()).join(constants::APPLICATION_FOLDER)){
Ok(_) => {}
Err(e) => {
if e.kind() != io::ErrorKind::AlreadyExists {
print_error(e);
}
}
}
let session_manager = Arc::new(SessionManager::new());
let global_vars = Arc::new(RwLock::new(GlobalVars {
session_manager: session_manager,
is_backend_running: false,
websocket_port: 0,
http_session_manager: HttpSessionsManager::new()
}));
let websocket_port = start_websocket_server(&global_vars);
global_vars.write().unwrap().websocket_port = websocket_port;
start_http_server(global_vars).unwrap();
}
fn print_error<T: Display>(error: T){
println!("{}", error);
}

405
src/session_manager/mod.rs Normal file
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@ -0,0 +1,405 @@
mod session;
pub mod protocol;
use std::{collections::HashMap, io::ErrorKind, net::{SocketAddr, TcpStream}, sync::{Arc, Mutex, MutexGuard, RwLock}, thread, thread::sleep, time::Duration};
use socket2::{Socket, Domain, Type};
use session::Session;
use strum_macros::Display;
use ed25519_dalek::PUBLIC_KEY_LENGTH;
use uuid::Uuid;
use zeroize::Zeroize;
use crate::{constants, identity::{Contact, Identity}, print_error};
use crate::ui_interface::UiConnection;
#[derive(Display, Debug, PartialEq, Eq)]
pub enum SessionError {
SocketTimeout,
ConnectionReset,
BrokenPipe,
TransmissionCorrupted,
BufferTooLarge,
ConnectFailed,
InvalidSessionId,
BindFailed,
AlreadyConnected,
IsUs,
Unknown
}
pub struct SessionManager {
session_counter: RwLock<usize>,
sessions: RwLock<HashMap<usize, Session>>,
identity: RwLock<Option<Identity>>,
ui_connection: Mutex<Option<Arc<Mutex<UiConnection>>>>,
loaded_contacts: RwLock<HashMap<usize, Contact>>,
msg_queue: Mutex<Vec<(usize, Vec<u8>)>>,
is_stopping: RwLock<bool>
}
impl SessionManager {
fn with_ui_connection<F>(&self, f: F) -> bool where F: Fn(MutexGuard<UiConnection>) {
let mut ui_connection_opt = self.ui_connection.lock().unwrap();
let ui_connection = ui_connection_opt.as_mut().unwrap().lock().unwrap();
if ui_connection.is_valid {
f(ui_connection);
true
} else {
false
}
}
fn do_handshake_then_add(&self, mut session: Session) -> Result<usize, SessionError>{
let identity_opt = self.identity.read().unwrap();
let identity = identity_opt.as_ref().unwrap();
session.do_handshake(identity)?;
let peer_public_key = session.peer_public_key.unwrap();
if identity.get_public_key() == peer_public_key { //did handshake with the same Identity
return Err(SessionError::IsUs);
}
let mut sessions = self.sessions.write().unwrap();
for (_, registered_session) in sessions.iter() {
if registered_session.peer_public_key.unwrap() == peer_public_key { //already connected with a different addr
return Err(SessionError::AlreadyConnected)
}
}
for (index, contact) in self.loaded_contacts.read().unwrap().iter() {
if contact.public_key == peer_public_key { //session is a known contact. Assign the contact index to it
sessions.insert(*index, session);
return Ok(*index)
}
}
//if not a contact, increment the session_counter
let mut session_counter = self.session_counter.write().unwrap();
sessions.insert(*session_counter, session);
let r = *session_counter;
*session_counter += 1;
Ok(r)
}
pub fn connect_to(&self, ip: &str) -> Result<usize, SessionError> {
let sessions = self.sessions.read().unwrap();
for (_, s) in sessions.iter() {
if s.get_ip() == ip {
return Err(SessionError::AlreadyConnected)
}
}
drop(sessions); //release mutex
match TcpStream::connect((ip, constants::PORT.parse().unwrap())) {
Ok(stream) => {
let session = Session::new(stream);
self.do_handshake_then_add(session)
}
Err(_) => Err(SessionError::ConnectFailed)
}
}
pub fn send_to(&self, index: &usize, message: &[u8]) -> Result<(), SessionError> {
let mut sessions = self.sessions.write().unwrap();
match sessions.get_mut(index) {
Some(session) => session.encrypt_and_send(message),
None => Err(SessionError::InvalidSessionId)
}
}
pub fn start_receiver_loop(session_manager: &Arc<SessionManager>) {
let session_manager_clone = Arc::clone(session_manager);
thread::spawn(move || {
loop {
let mut dead_sessions = Vec::new();
let mut sessions = session_manager_clone.sessions.write().unwrap();
for (index, session) in sessions.iter_mut() {
let mut dead_session = false;
match session.receive_and_decrypt() {
Ok(buffer) => {
if buffer[0] == protocol::Headers::ASK_NAME {
session.encrypt_and_send(&protocol::tell_name(&session_manager_clone.identity.read().unwrap().as_ref().unwrap().name)).unwrap();
} else {
let buffer = if buffer[0] == protocol::Headers::FILE {
let file_name_len = u16::from_be_bytes([buffer[1], buffer[2]]) as usize;
let file_name = &buffer[3..3+file_name_len];
match session_manager_clone.store_file(index, &buffer[3+file_name_len..]) {
Ok(file_uuid) => {
Some([&[protocol::Headers::FILE][..], file_uuid.as_bytes(), file_name].concat())
}
Err(e) => {
print_error(e);
None
}
}
} else {
Some(buffer)
};
if buffer.is_some() {
let mut msg_saved = false;
if session_manager_clone.is_contact(index) && buffer.as_ref().unwrap()[0] != protocol::Headers::TELL_NAME {
match session_manager_clone.store_msg(&index, false, &buffer.as_ref().unwrap()) {
Ok(_) => msg_saved = true,
Err(e) => print_error(e)
}
}
let ui_connection_valid = session_manager_clone.with_ui_connection(|mut ui_connection| {
ui_connection.on_received(index, &buffer.as_ref().unwrap());
});
if !ui_connection_valid && !msg_saved {
session_manager_clone.msg_queue.lock().unwrap().push((*index, buffer.unwrap()));
}
}
}
}
Err(e) => {
if e == SessionError::BrokenPipe {
dead_session = true
} else if e != SessionError::SocketTimeout {
print_error(e);
}
}
}
if dead_session {
session_manager_clone.with_ui_connection(|mut ui_connection| {
ui_connection.on_disconnected(*index);
});
dead_sessions.push(*index);
}
}
dead_sessions.into_iter().for_each(|index| {
sessions.remove(&index);
});
drop(sessions); //release mutex
if *session_manager_clone.is_stopping.read().unwrap() {
break;
}
sleep(Duration::from_millis(constants::MUTEX_RELEASE_DELAY_MS));
}
println!("Stopping receiver thread");
});
}
pub fn start_listener(session_manager: &Arc<SessionManager>) -> Result<(), SessionError> {
let socket_v6 = Socket::new(Domain::ipv6(), Type::stream(), None).unwrap();
let socket_v4 = Socket::new(Domain::ipv4(), Type::stream(), None).unwrap();
socket_v4.set_reuse_address(true).unwrap();
socket_v6.set_reuse_address(true).unwrap();
let addr_v6 = "[::1]:".to_owned()+constants::PORT;
let addr_v4 = "0.0.0.0:".to_owned()+constants::PORT;
let mut sockets = Vec::new();
match socket_v6.bind(&addr_v6.parse::<SocketAddr>().unwrap().into()) {
Ok(_) => sockets.push(socket_v6),
Err(e) => println!("Unable to bind on IPv6: {}", e)
};
match socket_v4.bind(&addr_v4.parse::<SocketAddr>().unwrap().into()) {
Ok(_) => sockets.push(socket_v4),
Err(e) => println!("Unable to bind on IPv4: {}", e)
}
if sockets.len() > 0 {
println!("Listening on port {}...", constants::PORT);
for socket in sockets {
socket.listen(256).unwrap();
socket.set_read_timeout(Some(Duration::from_millis(100))).unwrap();
let session_manager_clone = Arc::clone(session_manager);
thread::spawn(move ||{
for stream in socket.into_tcp_listener().incoming() {
match stream {
Ok(stream) => {
let session = Session::new(stream);
match session_manager_clone.do_handshake_then_add(session) {
Ok(index) => {
session_manager_clone.with_ui_connection(|mut ui_connection| {
ui_connection.on_new_session(index);
session_manager_clone.handle_new_session(&index, ui_connection);
});
}
Err(e) => {
if e != SessionError::AlreadyConnected && e != SessionError::IsUs {
print_error(e);
}
}
}
}
Err(e) => {
if e.kind() != ErrorKind::WouldBlock {
print_error(e);
}
}
}
if *session_manager_clone.is_stopping.read().unwrap() {
break;
}
}
println!("Stopping listener thread");
});
}
Ok(())
} else {
Err(SessionError::BindFailed)
}
}
pub fn handle_new_session(&self, index: &usize, mut ui_connection: MutexGuard<UiConnection>) {
if self.is_contact(index) {
match self.load_msgs(index) {
Some(msgs) => {
ui_connection.load_msgs(index, msgs);
}
None => {}
}
} else {
match self.ask_name_to(&index) {
Ok(_) => {}
Err(e) => print_error(e)
}
}
}
pub fn list_sessions(&self) -> Vec<usize> {
let sessions = self.sessions.read().unwrap();
sessions.iter().map(|t| *t.0).collect()
}
pub fn list_contacts(&self) -> Vec<(usize, String, bool)> {
self.loaded_contacts.read().unwrap().iter().map(|c| (*c.0, c.1.name.clone(), c.1.verified)).collect()
}
pub fn get_identity_uuid(&self) -> Option<Uuid> {
Some(self.identity.read().unwrap().as_ref()?.uuid)
}
pub fn get_saved_msgs(&self) -> Vec<(usize, Vec<u8>)> {
let mut msgs = Vec::new();
let mut msg_queue = self.msg_queue.lock().unwrap();
let sessions = self.sessions.read().unwrap();
for i in 0..msg_queue.len() {
let mut entry = msg_queue.remove(i);
if sessions.contains_key(&entry.0) {
msgs.push(entry);
} else {
entry.1.zeroize();
}
};
msgs
}
fn ask_name_to(&self, index: &usize) -> Result<(), SessionError> {
let mut sessions = self.sessions.write().unwrap();
match sessions.get_mut(index) {
Some(session) => {
session.encrypt_and_send(&protocol::ask_name())
},
None => Err(SessionError::InvalidSessionId)
}
}
pub fn get_peer_public_key(&self, index: &usize) -> Option<[u8; PUBLIC_KEY_LENGTH]> {
let sessions = self.sessions.read().unwrap();
let session = sessions.get(index)?;
session.peer_public_key
}
pub fn add_contact(&self, index: usize, name: String) -> Result<(), rusqlite::Error> {
let contact = self.identity.read().unwrap().as_ref().unwrap().add_contact(name, self.get_peer_public_key(&index).unwrap())?;
self.loaded_contacts.write().unwrap().insert(index, contact);
Ok(())
}
pub fn remove_contact(&self, index: &usize) -> Result<(), rusqlite::Error> {
let mut loaded_contacts = self.loaded_contacts.write().unwrap();
let result = self.identity.read().unwrap().as_ref().unwrap().remove_contact(&loaded_contacts.get(index).unwrap().uuid);
if result.is_ok() {
loaded_contacts.remove(index);
}
result
}
pub fn set_verified(&self, index: &usize) -> Result<(), rusqlite::Error> {
let mut loaded_contacts = self.loaded_contacts.write().unwrap();
let contact = loaded_contacts.get_mut(index).unwrap();
let result = self.identity.read().unwrap().as_ref().unwrap().set_verified(&contact.uuid);
if result.is_ok() {
contact.verified = true;
}
result
}
pub fn is_contact(&self, index: &usize) -> bool {
self.loaded_contacts.read().unwrap().contains_key(index)
}
pub fn load_file(&self, uuid: Uuid) -> Option<Vec<u8>> {
self.identity.read().unwrap().as_ref().unwrap().load_file(uuid)
}
pub fn store_file(&self, index: &usize, data: &[u8]) -> Result<Uuid, rusqlite::Error> {
self.identity.read().unwrap().as_ref().unwrap().store_file(match self.loaded_contacts.read().unwrap().get(index) {
Some(contact) => Some(contact.uuid),
None => None
}, data)
}
pub fn store_msg(&self, index: &usize, outgoing: bool, data: &[u8]) -> Result<(), rusqlite::Error> {
self.identity.read().unwrap().as_ref().unwrap().store_msg(&self.loaded_contacts.read().unwrap().get(index).unwrap().uuid, outgoing, data)
}
pub fn load_msgs(&self, index: &usize) -> Option<Vec<(bool, Vec<u8>)>> {
self.identity.read().unwrap().as_ref().unwrap().load_msgs(&self.loaded_contacts.read().unwrap().get(index).unwrap().uuid)
}
pub fn get_public_keys(&self, index: &usize) -> ([u8; PUBLIC_KEY_LENGTH], [u8; PUBLIC_KEY_LENGTH]) {
(self.identity.read().unwrap().as_ref().unwrap().get_public_key(), self.loaded_contacts.read().unwrap().get(index).unwrap().public_key)
}
fn clear_identity_related_data(&self){
self.loaded_contacts.write().unwrap().clear();
let mut msg_queue = self.msg_queue.lock().unwrap();
msg_queue.iter_mut().for_each(|m| m.1.zeroize());
msg_queue.clear();
}
pub fn stop(&self) {
*self.is_stopping.write().unwrap() = true;
self.set_identity(None);
*self.ui_connection.lock().unwrap() = None;
}
pub fn set_identity(&self, identity: Option<Identity>) {
let mut identity_guard = self.identity.write().unwrap();
match identity_guard.as_mut() {
Some(previous_identity) => {
previous_identity.zeroize();
self.sessions.write().unwrap().clear();
*self.session_counter.write().unwrap() = 0;
self.clear_identity_related_data();
}
None => {}
}
*identity_guard = identity;
if identity_guard.is_some() {
match identity_guard.as_ref().unwrap().load_contacts() {
Some(contacts) => {
let mut loaded_contacts = self.loaded_contacts.write().unwrap();
let mut session_counter = self.session_counter.write().unwrap();
contacts.into_iter().for_each(|contact|{
loaded_contacts.insert(*session_counter, contact);
*session_counter += 1;
})
}
None => {}
}
}
}
pub fn set_ui_connection(&self, ui_connection: &Arc<Mutex<UiConnection>>){
*self.ui_connection.lock().unwrap() = Some(ui_connection.clone());
}
pub fn new() -> SessionManager {
SessionManager {
session_counter: RwLock::new(0),
sessions: RwLock::new(HashMap::new()),
identity: RwLock::new(None),
ui_connection: Mutex::new(None),
loaded_contacts: RwLock::new(HashMap::new()),
msg_queue: Mutex::new(Vec::new()),
is_stopping: RwLock::new(false)
}
}
}

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pub struct Headers;
impl Headers {
pub const MESSAGE: u8 = 0x01;
pub const ASK_NAME: u8 = 0x02;
pub const TELL_NAME: u8 = 0x03;
pub const FILE: u8 = 0x04;
}
pub fn new_message(message: String) -> Vec<u8> {
[&[Headers::MESSAGE], message.as_bytes()].concat()
}
pub fn ask_name() -> Vec<u8> {
vec![Headers::ASK_NAME]
}
pub fn tell_name(name: &str) -> Vec<u8> {
[&[Headers::TELL_NAME], name.as_bytes()].concat()
}
pub fn file(file_name: &str, buffer: &[u8]) -> Vec<u8> {
[&[Headers::FILE], &(file_name.len() as u16).to_be_bytes()[..], file_name.as_bytes(), buffer].concat()
}

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use std::{io::{Read, Write, ErrorKind}, net::{TcpStream}, option::Option, result::Result, time::Duration};
use ed25519_dalek;
use ed25519_dalek::{ed25519::signature::Signature, Verifier, PUBLIC_KEY_LENGTH, SIGNATURE_LENGTH};
use x25519_dalek;
use rand_7::{RngCore, rngs::OsRng};
use sha2::{Sha384, Digest};
use aes_gcm::{Aes128Gcm, aead::Aead, NewAead, aead::Payload, aead::generic_array::GenericArray};
use crate::utils::*;
use crate::crypto::*;
use crate::identity::Identity;
use crate::session_manager::SessionError;
use crate::print_error;
const RANDOM_LEN: usize = 64;
const MESSAGE_LEN_LEN: usize = 4;
type MessageLenType = u32;
pub struct Session {
stream: TcpStream,
handshake_sent_buff: Vec<u8>,
handshake_recv_buff: Vec<u8>,
local_cipher: Option<Aes128Gcm>,
local_iv: Option<[u8; IV_LEN]>,
local_counter: usize,
peer_cipher: Option<Aes128Gcm>,
peer_iv: Option<[u8; IV_LEN]>,
peer_counter: usize,
pub peer_public_key: Option<[u8; PUBLIC_KEY_LENGTH]>,
//pub name: Option<String>,
//pub message_queue: Vec<Vec<u8>>,
}
impl Session {
pub fn new(stream: TcpStream) -> Session {
stream.set_read_timeout(Some(Duration::from_millis(1000))).unwrap();
Session {
stream: stream,
handshake_sent_buff: Vec::new(),
handshake_recv_buff: Vec::new(),
local_cipher: None,
local_iv: None,
local_counter: 0,
peer_cipher: None,
peer_iv: None,
peer_counter: 0,
peer_public_key: None,
}
}
pub fn get_ip(&self) -> String {
self.stream.peer_addr().unwrap().ip().to_string()
}
fn socket_read(&mut self, buff: &mut [u8]) -> Result<usize, SessionError> {
match self.stream.read(buff) {
Ok(read) => {
if read > 0 {
return Ok(read);
} else if read == 0 {
return Err(SessionError::BrokenPipe);
}
}
Err(e) => {
match e.kind() {
ErrorKind::WouldBlock => return Err(SessionError::SocketTimeout),
ErrorKind::ConnectionReset => return Err(SessionError::ConnectionReset),
_ => print_error(format!("Receive error: {}", e))
}
}
};
Err(SessionError::Unknown)
}
fn socket_write(&mut self, buff: &[u8]) -> Result<(), SessionError> {
match self.stream.write(buff) {
Ok(sent) => {
if buff.len() == sent {
return Ok(());
} else if sent == 0 {
return Err(SessionError::BrokenPipe);
}
}
Err(e) => print_error(format!("Send error: {}", e))
};
Err(SessionError::Unknown)
}
fn handshake_read(&mut self, buff: &mut [u8]) -> Result<(), SessionError> {
match self.socket_read(buff) {
Ok(_) => {
self.handshake_recv_buff.extend(buff.as_ref());
Ok(())
}
Err(e) => Err(e)
}
}
fn handshake_write(&mut self, buff: &[u8]) -> Result<(), SessionError> {
match self.socket_write(buff) {
Ok(_) => {
self.handshake_sent_buff.extend(buff);
Ok(())
}
Err(e) => Err(e)
}
}
fn hash_handshake(&self, i_am_bob: bool) -> [u8; 48] {
let handshake_bytes = if i_am_bob {
[self.handshake_sent_buff.as_slice(), self.handshake_recv_buff.as_slice()].concat()
} else {
[self.handshake_recv_buff.as_slice(), self.handshake_sent_buff.as_slice()].concat()
};
let mut hasher = Sha384::new();
hasher.update(handshake_bytes);
let handshake_hash = hasher.finalize();
to_array_48(handshake_hash.as_slice())
}
fn on_handshake_successful(&mut self, application_keys: ApplicationKeys){
self.local_cipher = Some(Aes128Gcm::new_varkey(&application_keys.local_key).unwrap());
self.local_iv = Some(application_keys.local_iv);
self.peer_cipher = Some(Aes128Gcm::new_varkey(&application_keys.peer_key).unwrap());
self.peer_iv = Some(application_keys.peer_iv);
self.handshake_sent_buff.clear();
self.handshake_sent_buff.shrink_to_fit();
self.handshake_recv_buff.clear();
self.handshake_recv_buff.shrink_to_fit();
}
pub fn do_handshake(&mut self, identity: &Identity) -> Result<(), SessionError> {
//ECDHE initial exchange
//generate random bytes
let mut handshake_buffer = [0; RANDOM_LEN+PUBLIC_KEY_LENGTH];
OsRng.fill_bytes(&mut handshake_buffer[..RANDOM_LEN]);
//generate ephemeral x25519 keys
let ephemeral_secret = x25519_dalek::EphemeralSecret::new(OsRng);
let ephemeral_public_key = x25519_dalek::PublicKey::from(&ephemeral_secret);
handshake_buffer[RANDOM_LEN..].copy_from_slice(&ephemeral_public_key.to_bytes());
self.handshake_write(&handshake_buffer)?;
self.handshake_read(&mut handshake_buffer)?;
let peer_ephemeral_public_key = x25519_dalek::PublicKey::from(to_array_32(&handshake_buffer[RANDOM_LEN..]));
//calc handshake keys
let i_am_bob = self.handshake_sent_buff < self.handshake_recv_buff; //mutual consensus for keys attribution
let handshake_hash = self.hash_handshake(i_am_bob);
let shared_secret = ephemeral_secret.diffie_hellman(&peer_ephemeral_public_key);
let handshake_keys = HandshakeKeys::derive_keys(shared_secret.to_bytes(), handshake_hash, i_am_bob);
//encrypted handshake
//generate random bytes
let mut random_bytes = [0; RANDOM_LEN];
OsRng.fill_bytes(&mut random_bytes);
self.handshake_write(&random_bytes)?;
//receive peer random bytes
let mut peer_random = [0; RANDOM_LEN];
self.handshake_read(&mut peer_random)?;
//get public key & sign our ephemeral public key
let mut auth_msg = [0; PUBLIC_KEY_LENGTH+SIGNATURE_LENGTH];
auth_msg[..PUBLIC_KEY_LENGTH].copy_from_slice(&identity.get_public_key());
auth_msg[PUBLIC_KEY_LENGTH..].copy_from_slice(&identity.sign(ephemeral_public_key.as_bytes()));
//encrypt auth_msg
let local_cipher = Aes128Gcm::new_varkey(&handshake_keys.local_key).unwrap();
let mut local_handshake_counter = 0;
let nonce = iv_to_nonce(&handshake_keys.local_iv, &mut local_handshake_counter);
let encrypted_auth_msg = local_cipher.encrypt(GenericArray::from_slice(&nonce), auth_msg.as_ref()).unwrap();
self.handshake_write(&encrypted_auth_msg)?;
let mut encrypted_peer_auth_msg = [0; PUBLIC_KEY_LENGTH+SIGNATURE_LENGTH+AES_TAG_LEN];
self.handshake_read(&mut encrypted_peer_auth_msg)?;
//decrypt peer_auth_msg
let peer_cipher = Aes128Gcm::new_varkey(&handshake_keys.peer_key).unwrap();
let mut peer_handshake_counter = 0;
let peer_nonce = iv_to_nonce(&handshake_keys.peer_iv, &mut peer_handshake_counter);
match peer_cipher.decrypt(GenericArray::from_slice(&peer_nonce), encrypted_peer_auth_msg.as_ref()) {
Ok(peer_auth_msg) => {
//verify ephemeral public key signature
self.peer_public_key = Some(to_array_32(&peer_auth_msg[..PUBLIC_KEY_LENGTH]));
let peer_public_key = ed25519_dalek::PublicKey::from_bytes(&self.peer_public_key.unwrap()).unwrap();
let peer_signature = Signature::from_bytes(&peer_auth_msg[PUBLIC_KEY_LENGTH..]).unwrap();
if peer_public_key.verify(peer_ephemeral_public_key.as_bytes(), &peer_signature).is_ok() {
let handshake_hash = self.hash_handshake(i_am_bob);
//sending handshake finished
let handshake_finished = compute_handshake_finished(handshake_keys.local_handshake_traffic_secret, handshake_hash);
self.socket_write(&handshake_finished)?;
let mut peer_handshake_finished = [0; HASH_OUTPUT_LEN];
self.socket_read(&mut peer_handshake_finished)?;
if verify_handshake_finished(peer_handshake_finished, handshake_keys.peer_handshake_traffic_secret, handshake_hash) {
//calc application keys
let application_keys = ApplicationKeys::derive_keys(handshake_keys.handshake_secret, handshake_hash, i_am_bob);
self.on_handshake_successful(application_keys);
return Ok(());
}
}
}
Err(_) => {}
}
Err(SessionError::TransmissionCorrupted)
}
pub fn encrypt_and_send(&mut self, message: &[u8]) -> Result<(), SessionError> {
let cipher_len = (message.len() as MessageLenType).to_be_bytes();
let payload = Payload {
msg: message,
aad: &cipher_len
};
let nonce = iv_to_nonce(&self.local_iv.unwrap(), &mut self.local_counter);
println!("nonce: {}", hex::encode(&nonce));
let cipher_text = self.local_cipher.as_ref().unwrap().encrypt(GenericArray::from_slice(&nonce), payload).unwrap();
self.socket_write([&cipher_len, cipher_text.as_slice()].concat().as_slice())
}
pub fn receive_and_decrypt(&mut self) -> Result<Vec<u8>, SessionError> {
let mut message_len = [0; MESSAGE_LEN_LEN];
self.socket_read(&mut message_len)?;
let recv_len = MessageLenType::from_be_bytes(message_len) as usize + AES_TAG_LEN;
if recv_len <= 50000000 {
let mut cipher_text = vec![0; recv_len];
let mut read = 0;
while read < recv_len {
read += self.socket_read(&mut cipher_text[read..])?;
}
let peer_nonce = iv_to_nonce(&self.peer_iv.unwrap(), &mut self.peer_counter);
let peer_cipher = self.peer_cipher.as_ref().unwrap();
let payload = Payload {
msg: &cipher_text,
aad: &message_len
};
match peer_cipher.decrypt(GenericArray::from_slice(&peer_nonce), payload) {
Ok(plain_text) => Ok(plain_text),
Err(_) => Err(SessionError::TransmissionCorrupted)
}
} else {
Err(SessionError::BufferTooLarge)
}
}
}

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use std::net::TcpStream;
use tungstenite::{Error, WebSocket};
use crate::{protocol};
mod ui_messages {
use std::str::from_utf8;
use tungstenite::Message;
use uuid::Uuid;
use crate::{print_error, session_manager::protocol, utils::to_uuid_bytes};
pub fn on_connected(index: usize) -> Message {
Message::from(format!("connected {}", index))
}
pub fn on_disconnected(index: usize) -> Message {
Message::from(format!("disconnected {}", index))
}
pub fn on_new_session(index: usize) -> Message {
Message::from(format!("new_session {}", index))
}
pub fn on_new_message(index: &usize, raw_message: &[u8]) -> Option<Message> {
match from_utf8(raw_message) {
Ok(msg) => Some(Message::from(format!("new_message {} {}", index, msg))),
Err(e) => {
print_error(e);
None
}
}
}
pub fn on_file_received(index: &usize, buffer: &[u8]) -> Option<Message> {
let uuid = Uuid::from_bytes(to_uuid_bytes(&buffer[..16])?);
match from_utf8(&buffer[16..]) {
Ok(file_name) => Some(Message::from(format!("file {} {} {}", index, uuid.to_string(), file_name))),
Err(e) => {
print_error(e);
None
}
}
}
pub fn load_sent_msg(index: &usize, buffer: &[u8]) -> Option<Message> {
match buffer[0] {
protocol::Headers::MESSAGE => {
match from_utf8(&buffer[1..]) {
Ok(msg) => Some(Message::from(format!("load_sent_msg {} {}", index, msg))),
Err(e) => {
print_error(e);
None
}
}
}
protocol::Headers::FILE => {
let uuid = Uuid::from_bytes(to_uuid_bytes(&buffer[1..17])?);
match from_utf8(&buffer[17..]) {
Ok(file_name) => Some(Message::from(format!("load_sent_file {} {} {}", index, uuid.to_string(), file_name))),
Err(e) => {
print_error(e);
None
}
}
}
_ => None
}
}
pub fn on_name_told(index: &usize, raw_name: &[u8]) -> Option<Message> {
match from_utf8(raw_name) {
Ok(name) => Some(Message::from(format!("name_told {} {}", index, name))),
Err(e) => {
print_error(e);
None
}
}
}
pub fn set_as_contact(index: usize, name: &str, verified: bool) -> Message {
Message::from(format!("is_contact {} {} {}", index, verified, name))
}
pub fn fingerprints(local: &str, peer: &str) -> Message {
Message::from(format!("fingerprints {} {}", local, peer))
}
pub fn file_sent(index: usize, file_name: &str, uuid: Option<String>) -> Message {
Message::from(format!("file_sent {} {} {}", index, match uuid {
Some(uuid) => uuid,
None => "None".to_owned()
}, file_name))
}
}
pub struct UiConnection{
pub websocket: WebSocket<TcpStream>,
pub is_valid: bool
}
impl UiConnection {
pub fn new(websocket: WebSocket<TcpStream>) -> UiConnection {
UiConnection {
websocket: websocket,
is_valid: true
}
}
pub fn on_received(&mut self, index: &usize, buffer: &[u8]) {
let ui_message = match buffer[0] {
protocol::Headers::MESSAGE => {
ui_messages::on_new_message(index, &buffer[1..])
}
protocol::Headers::TELL_NAME => {
ui_messages::on_name_told(index, &buffer[1..])
}
protocol::Headers::FILE => {
ui_messages::on_file_received(index, &buffer[1..])
}
_ => None
};
if ui_message.is_some() {
self.websocket.write_message(ui_message.unwrap()).unwrap();
}
}
pub fn on_new_session(&mut self, index: usize) {
self.websocket.write_message(ui_messages::on_new_session(index)).unwrap();
}
pub fn on_disconnected(&mut self, index: usize) {
self.websocket.write_message(ui_messages::on_disconnected(index)).unwrap();
}
pub fn on_connected(&mut self, index: usize) {
self.websocket.write_message(ui_messages::on_connected(index)).unwrap();
}
pub fn read_message(&mut self) -> Result<String, Error> {
Ok(self.websocket.read_message()?.into_text()?)
}
pub fn read_binary(&mut self) -> Result<Vec<u8>, Error> {
Ok(self.websocket.read_message()?.into_data())
}
pub fn set_as_contact(&mut self, index: usize, name: &str, verified: bool) {
self.websocket.write_message(ui_messages::set_as_contact(index, name, verified)).unwrap();
}
pub fn load_msgs(&mut self, index: &usize, msgs: Vec<(bool, Vec<u8>)>) {
msgs.into_iter().for_each(|msg| {
if msg.0 { //outgoing
match ui_messages::load_sent_msg(index, &msg.1) {
Some(msg) => self.websocket.write_message(msg).unwrap(),
None => {}
}
} else {
self.on_received(index, &msg.1)
}
})
}
pub fn fingerprints(&mut self, local: &str, peer: &str) {
self.websocket.write_message(ui_messages::fingerprints(local, peer)).unwrap();
}
pub fn file_sent(&mut self, index: usize, name: &str, uuid: Option<String>) {
self.websocket.write_message(ui_messages::file_sent(index, name, uuid)).unwrap()
}
}

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use std::convert::TryInto;
use uuid::Bytes;
use crate::print_error;
pub fn to_array_48(s: &[u8]) -> [u8; 48] {
s.try_into().unwrap()
}
pub fn to_array_32(s: &[u8]) -> [u8; 32] {
s.try_into().unwrap()
}
pub fn to_uuid_bytes(bytes: &[u8]) -> Option<Bytes> {
match bytes.try_into() {
Ok(uuid) => Some(uuid),
Err(e) => {
print_error(e);
None
}
}
}
pub fn escape_double_quote(origin: String) -> String {
origin.replace("\"", "\\\"")
}