net.adamcin.httpsig.http.apache3.Http3Util Maven / Gradle / Ivy

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/*
 * This is free and unencumbered software released into the public domain.
 *
 * Anyone is free to copy, modify, publish, use, compile, sell, or
 * distribute this software, either in source code form or as a compiled
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 *
 * In jurisdictions that recognize copyright laws, the author or authors
 * of this software dedicate any and all copyright interest in the
 * software to the public domain. We make this dedication for the benefit
 * of the public at large and to the detriment of our heirs and
 * successors. We intend this dedication to be an overt act of
 * relinquishment in perpetuity of all present and future rights to this
 * software under copyright law.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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package net.adamcin.httpsig.http.apache3;

import net.adamcin.httpsig.api.Constants;
import net.adamcin.httpsig.api.KeyId;
import net.adamcin.httpsig.api.Keychain;
import net.adamcin.httpsig.api.Signer;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.auth.AuthPolicy;
import org.apache.commons.httpclient.auth.CredentialsProvider;
import org.apache.commons.httpclient.params.DefaultHttpParams;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

public final class Http3Util {

    public static void enableAuth(HttpClient client, Keychain keychain, KeyId keyId) {
        Signer signer = new Signer(keychain, keyId);
        CredentialsProvider credProvider =
            (CredentialsProvider) client.getParams()
                    .getParameter(CredentialsProvider.PROVIDER);

        CredentialsProvider newProvider;
        if (credProvider instanceof SignerCredentialsProvider) {
            newProvider = new SignerCredentialsProvider(signer,
                                                        ((SignerCredentialsProvider) credProvider).getDelegatee());
        } else {
            newProvider = new SignerCredentialsProvider(signer, credProvider);
        }

        client.getParams().setParameter(CredentialsProvider.PROVIDER, newProvider);
        AuthPolicy.registerAuthScheme(Constants.SCHEME, Http3SignatureAuthScheme.class);
        List schemes = new ArrayList();
        schemes.add(Constants.SCHEME);

        Collection authSchemePriority = (Collection) DefaultHttpParams.getDefaultParams().getParameter(AuthPolicy.AUTH_SCHEME_PRIORITY);
        if (authSchemePriority != null) {
            schemes.addAll(authSchemePriority);
        }
        client.getParams().setParameter(AuthPolicy.AUTH_SCHEME_PRIORITY, schemes);
    }

    private Http3Util() {
    }
}