-
Notifications
You must be signed in to change notification settings - Fork 12
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
3 changed files
with
206 additions
and
3 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| use std::collections::HashMap; | ||
|
|
||
| use model::bitcoin::consensus::Decodable; | ||
| use model::bitcoin::util::psbt; | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct PortalPsbt { | ||
| pub inputs: Vec<psbt::Input>, | ||
| } | ||
|
|
||
| impl PortalPsbt { | ||
| pub fn parse(data: &[u8]) -> Result<Self, ParseError> { | ||
| if &data[..5] != &[0x70, 0x73, 0x62, 0x74, 0xFF] { | ||
| return Err(ParseError::InvalidMagic); | ||
| } | ||
| let data = &data[5..]; | ||
|
|
||
| let (_global, data) = RawMap::parse(data)?; | ||
| let mut inputs = vec![]; | ||
|
|
||
| let mut data = data; | ||
| loop { | ||
| let (input_map, remainder) = RawMap::parse(data)?; | ||
| if input_map.0.is_empty() { | ||
| break; | ||
| } | ||
|
|
||
| inputs.push(input_map.into_psbt_input()?); | ||
|
|
||
| data = remainder; | ||
| } | ||
|
|
||
| Ok(PortalPsbt { inputs }) | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct RawMap(HashMap<(u64, Vec<u8>), Vec<u8>>); | ||
|
|
||
| impl RawMap { | ||
| pub fn parse(mut data: &[u8]) -> Result<(Self, &[u8]), ParseError> { | ||
| let mut map = HashMap::new(); | ||
|
|
||
| while !data.is_empty() { | ||
| let mut cursor = std::io::Cursor::new(data); | ||
|
|
||
| let key = Vec::<u8>::consensus_decode(&mut cursor)?; | ||
| if key.is_empty() { | ||
| data = &data[1..]; | ||
| break; | ||
| } | ||
| let key_type = model::bitcoin::VarInt::consensus_decode(&mut key.as_slice())?; | ||
|
|
||
| let value = Vec::<u8>::consensus_decode(&mut cursor)?; | ||
| let key = key.into_iter().skip(key_type.len()).collect(); | ||
|
|
||
| map.insert((key_type.0, key), value); | ||
| data = &data[cursor.position() as usize..]; | ||
| } | ||
|
|
||
| Ok((RawMap(map), data)) | ||
| } | ||
|
|
||
| pub fn into_psbt_input(self) -> Result<psbt::Input, ParseError> { | ||
| fn map_err<E>(_: E) -> ParseError { | ||
| ParseError::InvalidData | ||
| } | ||
|
|
||
| self.0 | ||
| .into_iter() | ||
| .try_fold(psbt::Input::default(), |mut state, ((ty, key), data)| { | ||
| match ty { | ||
| // PSBT_IN_PARTIAL_SIG | ||
| 0x02 => { | ||
| let pk = model::bitcoin::PublicKey::from_slice(&key).map_err(map_err)?; | ||
| let sig = model::bitcoin::EcdsaSig::from_slice(&data).map_err(map_err)?; | ||
|
|
||
| state.partial_sigs.insert(pk, sig); | ||
| } | ||
| // PSBT_IN_TAP_KEY_SIG | ||
| 0x13 => { | ||
| let sig = model::bitcoin::SchnorrSig::from_slice(&data).map_err(map_err)?; | ||
|
|
||
| state.tap_key_sig = Some(sig); | ||
| } | ||
| // PSBT_IN_TAP_SCRIPT_SIG | ||
| 0x14 => { | ||
| use model::bitcoin::hashes::Hash; | ||
|
|
||
| let pk = model::bitcoin::XOnlyPublicKey::from_slice(&key[..32]) | ||
| .map_err(map_err)?; | ||
| let lh = model::bitcoin::util::taproot::TapLeafHash::from_slice(&key[32..]) | ||
| .map_err(map_err)?; | ||
| let sig = model::bitcoin::SchnorrSig::from_slice(&data).map_err(map_err)?; | ||
|
|
||
| state.tap_script_sigs.insert((pk, lh), sig); | ||
| } | ||
|
|
||
| // Ignore unknown types | ||
| _ => {} | ||
| } | ||
|
|
||
| Ok(state) | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug, Clone)] | ||
| pub enum ParseError { | ||
| InvalidMagic, | ||
| InvalidData, | ||
| } | ||
|
|
||
| impl From<model::bitcoin::consensus::encode::Error> for ParseError { | ||
| fn from(_: model::bitcoin::consensus::encode::Error) -> Self { | ||
| ParseError::InvalidData | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod test { | ||
| use super::*; | ||
|
|
||
| #[test] | ||
| fn test_parse_multiple_inputs() { | ||
| let data = vec![ | ||
| 0x70, 0x73, 0x62, 0x74, 0xFF, 0x01, 0x00, 0x33, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, | ||
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
| 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, | ||
| 0x00, 0x00, 0x00, 0x00, 0x22, 0x02, 0x02, 0xC5, 0x1A, 0x19, 0x85, 0xE7, 0x6C, 0x6C, | ||
| 0x31, 0xB8, 0xB0, 0xB4, 0x3E, 0x85, 0x04, 0x9D, 0xF5, 0x9F, 0xBD, 0x1D, 0x17, 0x14, | ||
| 0xF5, 0xF9, 0x5C, 0xC3, 0x0F, 0x27, 0x76, 0xA5, 0x3A, 0xB4, 0x40, 0x47, 0x30, 0x44, | ||
| 0x02, 0x20, 0x77, 0x51, 0x39, 0xD4, 0x42, 0xF7, 0xA1, 0x2A, 0xCA, 0x1A, 0x20, 0xD8, | ||
| 0xA4, 0x51, 0x9F, 0x70, 0x7E, 0xA0, 0xC1, 0x65, 0xFF, 0x08, 0x98, 0xF5, 0x50, 0xE4, | ||
| 0xF1, 0x70, 0xD1, 0x14, 0x81, 0x3E, 0x02, 0x20, 0x40, 0xDC, 0x09, 0x28, 0x16, 0x20, | ||
| 0xF5, 0xC0, 0xB3, 0x87, 0x43, 0x1A, 0x75, 0x17, 0x3A, 0x3E, 0x33, 0xC2, 0xBB, 0xDF, | ||
| 0x89, 0xCF, 0xFE, 0x25, 0xC0, 0xF6, 0x61, 0xAD, 0x2F, 0x18, 0xE0, 0x63, 0x01, 0x00, | ||
| 0x22, 0x02, 0x03, 0x2B, 0x64, 0xB3, 0x42, 0xD0, 0x68, 0x0C, 0x4E, 0x03, 0x99, 0xE4, | ||
| 0x69, 0x61, 0xAC, 0x04, 0x2F, 0x4C, 0x91, 0xD6, 0x7C, 0x1E, 0xF6, 0x1A, 0x73, 0x1C, | ||
| 0x7D, 0x65, 0x3E, 0x31, 0x72, 0x0D, 0xCF, 0x47, 0x30, 0x44, 0x02, 0x20, 0x02, 0x3F, | ||
| 0xA0, 0x7E, 0x82, 0x59, 0x78, 0xDA, 0x9A, 0xB7, 0xC7, 0x58, 0x6D, 0x8B, 0x0E, 0x05, | ||
| 0x2C, 0x07, 0x55, 0xDE, 0xA0, 0xB4, 0x23, 0x63, 0xF5, 0x39, 0x40, 0xAC, 0xB7, 0xB6, | ||
| 0xD0, 0x1A, 0x02, 0x20, 0x6C, 0x6D, 0xCE, 0xA4, 0x4E, 0x3A, 0x35, 0x29, 0x06, 0xB7, | ||
| 0x82, 0xC2, 0xA0, 0x9A, 0x2B, 0xA8, 0x96, 0x16, 0x5B, 0x0E, 0xBD, 0x92, 0x34, 0xE9, | ||
| 0x99, 0x63, 0xC1, 0xC7, 0x00, 0xCF, 0xD5, 0xAF, 0x01, 0x00, 0x22, 0x02, 0x02, 0xC5, | ||
| 0x1A, 0x19, 0x85, 0xE7, 0x6C, 0x6C, 0x31, 0xB8, 0xB0, 0xB4, 0x3E, 0x85, 0x04, 0x9D, | ||
| 0xF5, 0x9F, 0xBD, 0x1D, 0x17, 0x14, 0xF5, 0xF9, 0x5C, 0xC3, 0x0F, 0x27, 0x76, 0xA5, | ||
| 0x3A, 0xB4, 0x40, 0x47, 0x30, 0x44, 0x02, 0x20, 0x25, 0xC4, 0x14, 0x8D, 0x39, 0xF1, | ||
| 0xAE, 0x3E, 0x4E, 0x53, 0x65, 0x8A, 0x81, 0xB0, 0x0D, 0x27, 0x91, 0xE0, 0xDC, 0xDD, | ||
| 0x49, 0x1A, 0x5E, 0x9A, 0x57, 0x71, 0xA5, 0xD4, 0xDD, 0x1D, 0x42, 0xB6, 0x02, 0x20, | ||
| 0x5C, 0x6E, 0x5D, 0xA6, 0xEC, 0xFB, 0xE2, 0xEB, 0xE0, 0x9B, 0x1C, 0xDA, 0xB8, 0x18, | ||
| 0x13, 0x79, 0xBB, 0xFC, 0xAE, 0xE3, 0xA5, 0x48, 0x39, 0xFA, 0x16, 0xF8, 0x0D, 0x8E, | ||
| 0xF2, 0x15, 0x4A, 0xB2, 0x01, 0x00, | ||
| ]; | ||
| let parsed = PortalPsbt::parse(&data).unwrap().inputs; | ||
|
|
||
| assert_eq!(parsed.len(), 3); | ||
| for input in &parsed { | ||
| assert_eq!(input.partial_sigs.len(), 1); | ||
| } | ||
| } | ||
| } |