pub fn deserialize_compact_with_selector<'a, F>(
        &self,
        input: impl AsRef<[u8]>,
        selector: F,
    ) -> Result<(Vec<u8>, JwsHeader), JoseError>
    where
        F: Fn(&JwsHeader) -> Result<Option<&'a dyn JwsVerifier>, JoseError>,
    {
        (|| -> anyhow::Result<(Vec<u8>, JwsHeader)> {
            let input = input.as_ref();
            let indexies: Vec<usize> = input
                .iter()
                .enumerate()
                .filter(|(_, b)| **b == b'.' as u8)
                .map(|(pos, _)| pos)
                .collect();
            if indexies.len() != 2 {
                bail!(
                    "The compact serialization form of JWS must be three parts separated by colon."
                );
            }

            let header = &input[0..indexies[0]];
            let payload = &input[(indexies[0] + 1)..(indexies[1])];
            let signature = &input[(indexies[1] + 1)..];

            let header = base64::decode_config(header, base64::URL_SAFE_NO_PAD)?;
            let header: Map<String, Value> = serde_json::from_slice(&header)?;
            let header = JwsHeader::from_map(header)?;

            let verifier = match selector(&header)? {
                Some(val) => val,
                None => bail!("A verifier is not found."),
            };

            match header.claim("alg") {
                Some(Value::String(val)) => {
                    let expected_alg = verifier.algorithm().name();
                    if val != expected_alg {
                        bail!("The JWS alg header claim is not {}: {}", expected_alg, val);
                    }
                }
                Some(_) => bail!("The JWS alg header claim must be a string."),
                None => bail!("The JWS alg header claim is required."),
            }

            match verifier.key_id() {
                Some(expected) => match header.key_id() {
                    Some(actual) if expected == actual => {}
                    Some(actual) => bail!("The JWS kid header claim is mismatched: {}", actual),
                    None => bail!("The JWS kid header claim is required."),
                },
                None => {}
            }

            let mut b64 = true;
            if let Some(Value::Array(vals)) = header.claim("crit") {
                for val in vals {
                    if let Value::String(val2) = val {
                        if !self.is_acceptable_critical(val2) {
                            bail!("The critical name '{}' is not supported.", val2);
                        }

                        if val2 == "b64" {
                            if let Some(val) = header.base64url_encode_payload() {
                                b64 = val;
                            }
                        }
                    }
                }
            }

            let message = &input[..(indexies[1])];
            let signature = base64::decode_config(signature, base64::URL_SAFE_NO_PAD)?;
            verifier.verify(message, &signature)?;

            let payload = if b64 {
                base64::decode_config(payload, base64::URL_SAFE_NO_PAD)?
            } else {
                payload.to_vec()
            };

            Ok((payload, header))
        })()
        .map_err(|err| match err.downcast::<JoseError>() {
            Ok(err) => err,
            Err(err) => JoseError::InvalidJwsFormat(err),
        })
    }
/// Deserialize the input that is formatted by compact serialization.
///
/// # Arguments
///
/// * `input` - The input data.
/// * `header` - The decoded JWS header claims.
/// * `selector` - a function for selecting the verifying algorithm.
Deserialize the input that is formatted by compact serialization.
Deserialize the input that is formatted by compact serialization .
pub fn deserialize_compact_with_selector<'a, F>(
        &self,
        input: impl AsRef<[u8]>,
        selector: F,
    ) -> Result<(Vec<u8>, JwsHeader), JoseError>
    where
        F: Fn(&JwsHeader) -> Result<Option<&'a dyn JwsVerifier>, JoseError>,
    {
        (|| -> anyhow::Result<(Vec<u8>, JwsHeader)> {
            let input = input.as_ref();
            let indexies: Vec<usize> = input
                .iter()
                .enumerate()
                .filter(|(_, b)| **b == b'.' as u8)
                .map(|(pos, _)| pos)
                .collect();
            if indexies.len() != 2 {
                bail!(
                    "The compact serialization form of JWS must be three parts separated by colon."
                );
            }
            let header = &input[0..indexies[0]];
            let payload = &input[(indexies[0] + 1)..(indexies[1])];
            let signature = &input[(indexies[1] + 1)..];
            let header = base64::decode_config(header, base64::URL_SAFE_NO_PAD)?;
            let header: Map<String, Value> = serde_json::from_slice(&header)?;
            let header = JwsHeader::from_map(header)?;
            let verifier = match selector(&header)? {
                Some(val) => val,
                None => bail!("A verifier is not found."),
            };
            match header.claim("alg") {
                Some(Value::String(val)) => {
                    let expected_alg = verifier.algorithm().name();
                    if val != expected_alg {
                        bail!("The JWS alg header claim is not {}: {}", expected_alg, val);
                    }
                }
                Some(_) => bail!("The JWS alg header claim must be a string."),
                None => bail!("The JWS alg header claim is required."),
            }
            match verifier.key_id() {
                Some(expected) => match header.key_id() {
                    Some(actual) if expected == actual => {}
                    Some(actual) => bail!("The JWS kid header claim is mismatched: {}", actual),
                    None => bail!("The JWS kid header claim is required."),
                },
                None => {}
            }
            let mut b64 = true;
            if let Some(Value::Array(vals)) = header.claim("crit") {
                for val in vals {
                    if let Value::String(val2) = val {
                        if !self.is_acceptable_critical(val2) {
                            bail!("The critical name '{}' is not supported.", val2);
                        }
                        if val2 == "b64" {
                            if let Some(val) = header.base64url_encode_payload() {
                                b64 = val;
                            }
                        }
                    }
                }
            }
            let message = &input[..(indexies[1])];
            let signature = base64::decode_config(signature, base64::URL_SAFE_NO_PAD)?;
            verifier.verify(message, &signature)?;
            let payload = if b64 {
                base64::decode_config(payload, base64::URL_SAFE_NO_PAD)?
            } else {
                payload.to_vec()
            };
            Ok((payload, header))
        })()
        .map_err(|err| match err.downcast::<JoseError>() {
            Ok(err) => err,
            Err(err) => JoseError::InvalidJwsFormat(err),
        })
    }
pub fn deserialize_compact_with_selector < ' a , F > ( & self , input : impl AsRef < [ u8 ] > , selector : F , ) -> Result < ( Vec < u8 > , JwsHeader ) , JoseError > where F : Fn ( & JwsHeader ) -> Result < Option < & ' a dyn JwsVerifier > , JoseError > , { ( | | -> anyhow :: Result < ( Vec < u8 > , JwsHeader ) > { let input = input . as_ref ( ) ; let indexies : Vec < usize > = input . iter ( ) . enumerate ( ) . filter ( | ( _ , b ) | * * b == b'.' as u8 ) . map ( | ( pos , _ ) | pos ) . collect ( ) ; if indexies . len ( ) != 2 { bail ! ( " " ) ; } let header = & input [ 0 .. indexies [ 0 ] ] ; let payload = & input [ ( indexies [ 0 ] + 1 ) .. ( indexies [ 1 ] ) ] ; let signature = & input [ ( indexies [ 1 ] + 1 ) .. ] ; let header = base64 :: decode_config ( header , base64 :: URL_SAFE_NO_PAD ) ? ; let header : Map < String , Value > = serde_json :: from_slice ( & header ) ? ; let header = JwsHeader :: from_map ( header ) ? ; let verifier = match selector ( & header ) ? { Some ( val ) => val , None => bail ! ( " " ) , } ; match header . claim ( " " ) { Some ( Value :: String ( val ) ) => { let expected_alg = verifier . algorithm ( ) . name ( ) ; if val != expected_alg { bail ! ( " " expected_alg val ) ; } } Some ( _ ) => bail ! ( " " ) , None => bail ! ( " " ) , } match verifier . key_id ( ) { Some ( expected ) => match header . key_id ( ) { Some ( actual ) if expected == actual => { } Some ( actual ) => bail ! ( " " actual ) , None => bail ! ( " " ) , } , None => { } } let mut b64 = true ; if let Some ( Value :: Array ( vals ) ) = header . claim ( " " ) { for val in vals { if let Value :: String ( val2 ) = val { if ! self . is_acceptable_critical ( val2 ) { bail ! ( " " val2 ) ; } if val2 == " " { if let Some ( val ) = header . base64url_encode_payload ( ) { b64 = val ; } } } } } let message = & input [ .. ( indexies [ 1 ] ) ] ; let signature = base64 :: decode_config ( signature , base64 :: URL_SAFE_NO_PAD ) ? ; verifier . verify ( message , & signature ) ? ; let payload = if b64 { base64 :: decode_config ( payload , base64 :: URL_SAFE_NO_PAD ) ? } else { payload . to_vec ( ) } ; Ok ( ( payload , header ) ) } ) ( ) . map_err ( | err | match err . downcast :: < JoseError > ( ) { Ok ( err ) => err , Err ( err ) => JoseError :: InvalidJwsFormat ( err ) , } ) }
Deserialize the input that is formatted by compact serialization.
Deserialize the input that is formatted by compact serialization .
&self
input
impl AsRef<[u8]>
selector
F
&self
input
impl AsRef<[u8]>
selector
F