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Move SilentPaymentAddress and Network to utils
These structs are not meant to be used for the default sending and receiving flow, but can still be quite useful. Therefore the utils module is probably the best place for them.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| use core::fmt; | ||
|
|
||
| use crate::Error; | ||
| use crate::Result; | ||
| use bech32::{FromBase32, ToBase32}; | ||
| use secp256k1::PublicKey; | ||
| use serde::{Deserialize, Serialize}; | ||
|
|
||
| /// The network format used for this silent payment address. | ||
| /// | ||
| /// There are three network types: Mainnet (`sp1..`), Testnet (`tsp1..`), and Regtest (`sprt1..`). | ||
| /// Signet uses the same network type as Testnet. | ||
| #[derive(Clone, Copy, Debug, Hash, PartialEq, Eq, Deserialize, Serialize)] | ||
| pub enum Network { | ||
| Mainnet, | ||
| Testnet, | ||
| Regtest, | ||
| } | ||
|
|
||
| /// A silent payment address struct that can be used to deserialize a silent payment address string. | ||
| #[derive(Clone, Copy, Debug, Hash, PartialEq, Eq)] | ||
| pub struct SilentPaymentAddress { | ||
| version: u8, | ||
| scan_pubkey: PublicKey, | ||
| m_pubkey: PublicKey, | ||
| network: Network, | ||
| } | ||
|
|
||
| impl SilentPaymentAddress { | ||
| pub fn new( | ||
| scan_pubkey: PublicKey, | ||
| m_pubkey: PublicKey, | ||
| network: Network, | ||
| version: u8, | ||
| ) -> Result<Self> { | ||
| if version != 0 { | ||
| return Err(Error::GenericError( | ||
| "Can't have other version than 0 for now".to_owned(), | ||
| )); | ||
| } | ||
|
|
||
| Ok(SilentPaymentAddress { | ||
| scan_pubkey, | ||
| m_pubkey, | ||
| network, | ||
| version, | ||
| }) | ||
| } | ||
|
|
||
| pub fn get_scan_key(&self) -> PublicKey { | ||
| self.scan_pubkey | ||
| } | ||
|
|
||
| pub fn get_spend_key(&self) -> PublicKey { | ||
| self.m_pubkey | ||
| } | ||
|
|
||
| pub fn get_network(&self) -> Network { | ||
| self.network | ||
| } | ||
| } | ||
|
|
||
| impl fmt::Display for SilentPaymentAddress { | ||
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | ||
| write!(f, "{}", <SilentPaymentAddress as Into<String>>::into(*self)) | ||
| } | ||
| } | ||
|
|
||
| impl TryFrom<&str> for SilentPaymentAddress { | ||
| type Error = Error; | ||
|
|
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| fn try_from(addr: &str) -> Result<Self> { | ||
| let (hrp, data, _variant) = bech32::decode(addr)?; | ||
|
|
||
| if data.len() != 107 { | ||
| return Err(Error::GenericError("Address length is wrong".to_owned())); | ||
| } | ||
|
|
||
| let version = data[0].to_u8(); | ||
|
|
||
| let network = match hrp.as_str() { | ||
| "sp" => Network::Mainnet, | ||
| "tsp" => Network::Testnet, | ||
| "sprt" => Network::Regtest, | ||
| _ => { | ||
| return Err(Error::InvalidAddress(format!( | ||
| "Wrong prefix, expected \"sp\", \"tsp\", or \"sprt\", got \"{}\"", | ||
| &hrp | ||
| ))) | ||
| } | ||
| }; | ||
|
|
||
| let data = Vec::<u8>::from_base32(&data[1..])?; | ||
|
|
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| let scan_pubkey = PublicKey::from_slice(&data[..33])?; | ||
| let m_pubkey = PublicKey::from_slice(&data[33..])?; | ||
|
|
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| SilentPaymentAddress::new(scan_pubkey, m_pubkey, network, version) | ||
| } | ||
| } | ||
|
|
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| impl TryFrom<String> for SilentPaymentAddress { | ||
| type Error = Error; | ||
|
|
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| fn try_from(addr: String) -> Result<Self> { | ||
| addr.as_str().try_into() | ||
| } | ||
| } | ||
|
|
||
| impl From<SilentPaymentAddress> for String { | ||
| fn from(val: SilentPaymentAddress) -> Self { | ||
| let hrp = match val.network { | ||
| Network::Testnet => "tsp", | ||
| Network::Regtest => "sprt", | ||
| Network::Mainnet => "sp", | ||
| }; | ||
|
|
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| let version = bech32::u5::try_from_u8(val.version).unwrap(); | ||
|
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| let B_scan_bytes = val.scan_pubkey.serialize(); | ||
| let B_m_bytes = val.m_pubkey.serialize(); | ||
|
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| let mut data = [B_scan_bytes, B_m_bytes].concat().to_base32(); | ||
|
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| data.insert(0, version); | ||
|
|
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| bech32::encode(hrp, data, bech32::Variant::Bech32m).unwrap() | ||
| } | ||
| } |
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