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use crate::{
config::{Error, SecureBackend},
keys::ConfigKey,
network_id::NetworkId,
utils,
};
use diem_crypto::{x25519, Uniform};
use diem_network_address_encryption::Encryptor;
use diem_secure_storage::{CryptoStorage, KVStorage, Storage};
use diem_types::{
network_address::NetworkAddress, transaction::authenticator::AuthenticationKey, PeerId,
};
use rand::{
rngs::{OsRng, StdRng},
Rng, SeedableRng,
};
use serde::{Deserialize, Serialize};
use short_hex_str::AsShortHexStr;
use std::{
collections::{HashMap, HashSet},
convert::TryFrom,
path::PathBuf,
string::ToString,
time::Duration,
};
pub const HANDSHAKE_VERSION: u8 = 0;
pub const NETWORK_CHANNEL_SIZE: usize = 1024;
pub const PING_INTERVAL_MS: u64 = 1000;
pub const PING_TIMEOUT_MS: u64 = 10_000;
pub const PING_FAILURES_TOLERATED: u64 = 5;
pub const CONNECTIVITY_CHECK_INTERVAL_MS: u64 = 5000;
pub const MAX_CONCURRENT_NETWORK_REQS: usize = 100;
pub const MAX_CONNECTION_DELAY_MS: u64 = 60_000; pub const MAX_FULLNODE_OUTBOUND_CONNECTIONS: usize = 3;
pub const MAX_INBOUND_CONNECTIONS: usize = 100;
pub const MAX_FRAME_SIZE: usize = 8 * 1024 * 1024; pub const CONNECTION_BACKOFF_BASE: u64 = 2;
pub const IP_BYTE_BUCKET_RATE: usize = 102400 ;
pub const IP_BYTE_BUCKET_SIZE: usize = IP_BYTE_BUCKET_RATE;
#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
#[serde(default, deny_unknown_fields)]
pub struct NetworkConfig {
pub max_connection_delay_ms: u64,
pub connection_backoff_base: u64,
pub connectivity_check_interval_ms: u64,
pub network_channel_size: usize,
pub max_concurrent_network_reqs: usize,
pub discovery_method: DiscoveryMethod,
pub discovery_methods: Vec<DiscoveryMethod>,
pub identity: Identity,
pub listen_address: NetworkAddress,
pub mutual_authentication: bool,
pub network_address_key_backend: Option<SecureBackend>,
pub network_id: NetworkId,
pub seed_addrs: HashMap<PeerId, Vec<NetworkAddress>>,
pub seeds: PeerSet,
pub max_frame_size: usize,
pub enable_proxy_protocol: bool,
pub ping_interval_ms: u64,
pub ping_timeout_ms: u64,
pub ping_failures_tolerated: u64,
pub max_outbound_connections: usize,
pub max_inbound_connections: usize,
pub inbound_rate_limit_config: Option<RateLimitConfig>,
pub outbound_rate_limit_config: Option<RateLimitConfig>,
}
impl Default for NetworkConfig {
fn default() -> Self {
NetworkConfig::network_with_id(NetworkId::default())
}
}
impl NetworkConfig {
pub fn network_with_id(network_id: NetworkId) -> NetworkConfig {
let mut config = Self {
discovery_method: DiscoveryMethod::None,
discovery_methods: Vec::new(),
identity: Identity::None,
listen_address: "/ip4/0.0.0.0/tcp/6180".parse().unwrap(),
mutual_authentication: false,
network_address_key_backend: None,
network_id,
seed_addrs: HashMap::new(),
seeds: PeerSet::default(),
max_frame_size: MAX_FRAME_SIZE,
enable_proxy_protocol: false,
max_connection_delay_ms: MAX_CONNECTION_DELAY_MS,
connectivity_check_interval_ms: CONNECTIVITY_CHECK_INTERVAL_MS,
network_channel_size: NETWORK_CHANNEL_SIZE,
max_concurrent_network_reqs: MAX_CONCURRENT_NETWORK_REQS,
connection_backoff_base: CONNECTION_BACKOFF_BASE,
ping_interval_ms: PING_INTERVAL_MS,
ping_timeout_ms: PING_TIMEOUT_MS,
ping_failures_tolerated: PING_FAILURES_TOLERATED,
max_outbound_connections: MAX_FULLNODE_OUTBOUND_CONNECTIONS,
max_inbound_connections: MAX_INBOUND_CONNECTIONS,
inbound_rate_limit_config: None,
outbound_rate_limit_config: None,
};
config.prepare_identity();
config
}
}
impl NetworkConfig {
pub fn identity_key(&self) -> x25519::PrivateKey {
let key = match &self.identity {
Identity::FromConfig(config) => Some(config.key.clone().key),
Identity::FromStorage(config) => {
let storage: Storage = (&config.backend).into();
let key = storage
.export_private_key(&config.key_name)
.expect("Unable to read key");
let key = x25519::PrivateKey::from_ed25519_private_bytes(&key.to_bytes())
.expect("Unable to convert key");
Some(key)
}
Identity::None => None,
};
key.expect("identity key should be present")
}
pub fn identity_from_storage(&self) -> IdentityFromStorage {
if let Identity::FromStorage(identity) = self.identity.clone() {
identity
} else {
panic!("Invalid identity found, expected a storage identity.");
}
}
pub fn discovery_methods(&self) -> Vec<&DiscoveryMethod> {
if self.discovery_method != DiscoveryMethod::None && !self.discovery_methods.is_empty() {
panic!("Can't specify discovery_method and discovery_methods")
} else if self.discovery_method != DiscoveryMethod::None {
vec![&self.discovery_method]
} else {
self.discovery_methods
.iter()
.filter(|method| &&DiscoveryMethod::None != method)
.collect()
}
}
pub fn encryptor(&self) -> Encryptor<Storage> {
if let Some(backend) = self.network_address_key_backend.as_ref() {
let storage = backend.into();
Encryptor::new(storage)
} else {
Encryptor::for_testing()
}
}
pub fn load_validator_network(&mut self) -> Result<(), Error> {
self.network_id = NetworkId::Validator;
self.load()
}
pub fn load_fullnode_network(&mut self) -> Result<(), Error> {
if self.network_id.is_validator_network() {
return Err(Error::InvariantViolation(format!(
"Set {} network for a non-validator network",
self.network_id
)));
}
self.load()
}
fn load(&mut self) -> Result<(), Error> {
if self.listen_address.to_string().is_empty() {
self.listen_address = utils::get_local_ip()
.ok_or_else(|| Error::InvariantViolation("No local IP".to_string()))?;
}
self.prepare_identity();
Ok(())
}
pub fn peer_id(&self) -> PeerId {
match &self.identity {
Identity::FromConfig(config) => Some(config.peer_id),
Identity::FromStorage(config) => {
let storage: Storage = (&config.backend).into();
let peer_id = storage
.get::<PeerId>(&config.peer_id_name)
.expect("Unable to read peer id")
.value;
Some(peer_id)
}
Identity::None => None,
}
.expect("peer id should be present")
}
fn prepare_identity(&mut self) {
match &mut self.identity {
Identity::FromStorage(_) => (),
Identity::None => {
let mut rng = StdRng::from_seed(OsRng.gen());
let key = x25519::PrivateKey::generate(&mut rng);
let peer_id =
diem_types::account_address::from_identity_public_key(key.public_key());
self.identity = Identity::from_config(key, peer_id);
}
Identity::FromConfig(config) => {
let peer_id =
diem_types::account_address::from_identity_public_key(config.key.public_key());
if config.peer_id == PeerId::ZERO {
config.peer_id = peer_id;
}
}
};
}
pub fn random(&mut self, rng: &mut StdRng) {
self.random_with_peer_id(rng, None);
}
pub fn random_with_peer_id(&mut self, rng: &mut StdRng, peer_id: Option<PeerId>) {
let identity_key = x25519::PrivateKey::generate(rng);
let peer_id = if let Some(peer_id) = peer_id {
peer_id
} else {
AuthenticationKey::try_from(identity_key.public_key().as_slice())
.unwrap()
.derived_address()
};
self.identity = Identity::from_config(identity_key, peer_id);
}
fn verify_address(peer_id: &PeerId, addr: &NetworkAddress) -> Result<(), Error> {
crate::config::invariant(
addr.is_diemnet_addr(),
format!(
"Unexpected seed peer address format: peer_id: {}, addr: '{}'",
peer_id.short_str(),
addr,
),
)
}
pub fn verify_seeds(&self) -> Result<(), Error> {
for (peer_id, addrs) in self.seed_addrs.iter() {
for addr in addrs {
Self::verify_address(peer_id, addr)?;
}
}
for (peer_id, seed) in self.seeds.iter() {
for addr in seed.addresses.iter() {
Self::verify_address(peer_id, addr)?;
}
crate::config::invariant(
!seed.keys.is_empty() || !seed.addresses.is_empty(),
format!("Seed peer {} has no pubkeys", peer_id.short_str()),
)?;
}
Ok(())
}
}
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum DiscoveryMethod {
Onchain,
File(PathBuf, Duration),
None,
}
#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
#[serde(rename_all = "snake_case", tag = "type")]
pub enum Identity {
FromConfig(IdentityFromConfig),
FromStorage(IdentityFromStorage),
None,
}
impl Identity {
pub fn from_config(key: x25519::PrivateKey, peer_id: PeerId) -> Self {
let key = ConfigKey::new(key);
Identity::FromConfig(IdentityFromConfig { key, peer_id })
}
pub fn from_storage(key_name: String, peer_id_name: String, backend: SecureBackend) -> Self {
Identity::FromStorage(IdentityFromStorage {
backend,
key_name,
peer_id_name,
})
}
}
#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct IdentityFromConfig {
#[serde(flatten)]
pub key: ConfigKey<x25519::PrivateKey>,
pub peer_id: PeerId,
}
#[derive(Clone, Debug, Deserialize, PartialEq, Eq, Serialize)]
#[serde(deny_unknown_fields)]
pub struct IdentityFromStorage {
pub backend: SecureBackend,
pub key_name: String,
pub peer_id_name: String,
}
#[derive(Copy, Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
pub struct RateLimitConfig {
pub ip_byte_bucket_rate: usize,
pub ip_byte_bucket_size: usize,
pub initial_bucket_fill_percentage: u8,
pub enabled: bool,
}
impl Default for RateLimitConfig {
fn default() -> Self {
Self {
ip_byte_bucket_rate: IP_BYTE_BUCKET_RATE,
ip_byte_bucket_size: IP_BYTE_BUCKET_SIZE,
initial_bucket_fill_percentage: 25,
enabled: true,
}
}
}
pub type PeerSet = HashMap<PeerId, Peer>;
#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
pub enum PeerRole {
Validator = 0,
PreferredUpstream,
Upstream,
ValidatorFullNode,
Downstream,
Known,
Unknown,
}
impl Default for PeerRole {
fn default() -> Self {
PeerRole::Unknown
}
}
#[derive(Clone, Debug, Default, Deserialize, PartialEq, Eq, Serialize)]
#[serde(default)]
pub struct Peer {
pub addresses: Vec<NetworkAddress>,
pub keys: HashSet<x25519::PublicKey>,
pub role: PeerRole,
}
impl Peer {
pub fn new(
addresses: Vec<NetworkAddress>,
mut keys: HashSet<x25519::PublicKey>,
role: PeerRole,
) -> Peer {
let addr_keys = addresses
.iter()
.filter_map(NetworkAddress::find_noise_proto);
keys.extend(addr_keys);
Peer {
addresses,
keys,
role,
}
}
pub fn extend(&mut self, other: Peer) -> Result<(), Error> {
crate::config::invariant(
self.role != other.role,
format!(
"Roles don't match self {:?} vs other {:?}",
self.role, other.role
),
)?;
self.addresses.extend(other.addresses);
self.keys.extend(other.keys);
Ok(())
}
pub fn from_addrs(role: PeerRole, addresses: Vec<NetworkAddress>) -> Peer {
let keys: HashSet<x25519::PublicKey> = addresses
.iter()
.filter_map(NetworkAddress::find_noise_proto)
.collect();
Peer::new(addresses, keys, role)
}
}