anp 0.8.9

Rust SDK for Agent Network Protocol (ANP)
Documentation 
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use percent_encoding::percent_decode_str;
#[cfg(feature = "network")]
use reqwest::Client;
use serde_json::Value;

#[cfg(feature = "network")]
use crate::proof::{verify_w3c_proof, ProofVerificationOptions};

#[cfg(feature = "network")]
use super::did_wba::{find_verification_method, validate_did_document_binding};
use super::did_wba::{
    resolve_did_wba_document_sync, resolve_did_wba_document_with_options, AuthenticationError,
    DidResolutionOptions,
};
#[cfg(feature = "network")]
use super::verification_methods::extract_public_key;

pub async fn resolve_did_document(
    did: &str,
    verify_proof: bool,
) -> Result<Value, AuthenticationError> {
    resolve_did_document_with_options(did, verify_proof, &DidResolutionOptions::default()).await
}

pub async fn resolve_did_document_with_options(
    did: &str,
    verify_proof: bool,
    options: &DidResolutionOptions,
) -> Result<Value, AuthenticationError> {
    if did.starts_with("did:wba:") {
        return resolve_did_wba_document_with_options(did, verify_proof, options).await;
    }
    if !did.starts_with("did:web:") {
        return Err(AuthenticationError::InvalidDid);
    }

    let parts: Vec<&str> = did.split(':').collect();
    if parts.len() < 3 {
        return Err(AuthenticationError::InvalidDid);
    }
    let domain = percent_decode_str(parts[2]).decode_utf8_lossy().to_string();
    let path_segments = if parts.len() > 3 {
        &parts[3..]
    } else {
        &[][..]
    };
    let base_url = options
        .base_url_override
        .clone()
        .unwrap_or_else(|| format!("https://{domain}"));
    let url = if path_segments.is_empty() {
        format!("{}/.well-known/did.json", base_url.trim_end_matches('/'))
    } else {
        format!(
            "{}/{}/did.json",
            base_url.trim_end_matches('/'),
            path_segments
                .iter()
                .map(|segment| percent_decode_str(segment).decode_utf8_lossy().to_string())
                .collect::<Vec<String>>()
                .join("/")
        )
    };

    #[cfg(not(feature = "network"))]
    {
        let _ = url;
        return Err(AuthenticationError::NetworkFailure);
    }

    #[cfg(feature = "network")]
    {
        let client = Client::builder()
            .danger_accept_invalid_certs(!options.verify_ssl)
            .timeout(std::time::Duration::from_secs_f64(options.timeout_seconds))
            .build()
            .map_err(|_| AuthenticationError::NetworkFailure)?;
        let mut request = client.get(url).header("Accept", "application/json");
        for (key, value) in &options.headers {
            request = request.header(key.as_str(), value.as_str());
        }
        let document: Value = request
            .send()
            .await
            .map_err(|_| AuthenticationError::NetworkFailure)?
            .error_for_status()
            .map_err(|_| AuthenticationError::NetworkFailure)?
            .json()
            .await
            .map_err(|_| AuthenticationError::JsonFailure)?;

        if document.get("id").and_then(Value::as_str) != Some(did) {
            return Err(AuthenticationError::InvalidDidDocument);
        }
        if did.starts_with("did:wba:") && !validate_did_document_binding(&document, verify_proof) {
            return Err(AuthenticationError::InvalidDidBinding);
        }
        if verify_proof {
            if let Some(proof) = document.get("proof") {
                let verification_method = proof
                    .get("verificationMethod")
                    .and_then(Value::as_str)
                    .ok_or(AuthenticationError::InvalidDidDocument)?;
                let method = find_verification_method(&document, verification_method)
                    .ok_or(AuthenticationError::VerificationMethodNotFound)?;
                let public_key = extract_public_key(&method)
                    .map_err(|err| AuthenticationError::VerificationMethod(err.to_string()))?;
                if !verify_w3c_proof(&document, &public_key, ProofVerificationOptions::default()) {
                    return Err(AuthenticationError::VerificationFailed);
                }
            }
        }

        Ok(document)
    }
}

pub fn resolve_did_document_sync(
    did: &str,
    verify_proof: bool,
) -> Result<Value, AuthenticationError> {
    if did.starts_with("did:wba:") {
        return resolve_did_wba_document_sync(did, verify_proof);
    }
    let runtime =
        tokio::runtime::Runtime::new().map_err(|_| AuthenticationError::NetworkFailure)?;
    runtime.block_on(resolve_did_document(did, verify_proof))
}