56 lines
1.4 KiB
Rust
56 lines
1.4 KiB
Rust
/// Circle Message generated by the Message Transmitter program.
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///
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/// See https://developers.circle.com/stablecoins/docs/message-format for more info.
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#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
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pub struct CctpMessage<'a> {
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span: &'a [u8],
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}
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impl AsRef<[u8]> for CctpMessage<'_> {
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fn as_ref(&self) -> &[u8] {
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self.span
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}
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}
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impl<'a> CctpMessage<'a> {
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pub fn version(&self) -> u32 {
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u32::from_be_bytes(self.span[..4].try_into().unwrap())
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}
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pub fn source_domain(&self) -> u32 {
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u32::from_be_bytes(self.span[4..8].try_into().unwrap())
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}
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pub fn destination_domain(&self) -> u32 {
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u32::from_be_bytes(self.span[8..12].try_into().unwrap())
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}
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pub fn nonce(&self) -> u64 {
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u64::from_be_bytes(self.span[12..20].try_into().unwrap())
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}
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pub fn sender(&self) -> [u8; 32] {
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self.span[20..52].try_into().unwrap()
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}
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pub fn recipient(&self) -> [u8; 32] {
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self.span[52..84].try_into().unwrap()
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}
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pub fn destination_caller(&self) -> [u8; 32] {
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self.span[84..116].try_into().unwrap()
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}
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pub fn message(&self) -> &[u8] {
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&self.span[116..]
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}
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pub fn parse(span: &'a [u8]) -> Result<CctpMessage<'a>, &'static str> {
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if span.len() < 116 {
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return Err("CctpMessage span too short. Need at least 116 bytes");
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}
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Ok(CctpMessage { span })
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}
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}
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