io.macgyver.core.auth.ApiToken.java Source code

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Here is the source code for io.macgyver.core.auth.ApiToken.java

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/**
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.macgyver.core.auth;

import java.io.IOException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;

import org.springframework.core.convert.support.GenericConversionService;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.google.common.io.BaseEncoding;

import io.macgyver.core.MacGyverException;

public class ApiToken {

    static ObjectMapper mapper = new ObjectMapper();

    ObjectNode data = mapper.createObjectNode();

    protected ApiToken() {
        // TODO Auto-generated constructor stub
    }

    public String getAccessKey() {
        return data.get("a").asText();
    }

    public String getSecretKey() {
        return data.get("s").asText();
    }

    public String getArmoredString() {
        return BaseEncoding.base64Url().encode(data.toString().getBytes());
    }

    public static ApiToken parse(String armored) {

        try {
            ApiToken t = new ApiToken();
            t.data = (ObjectNode) mapper.readTree(new String(BaseEncoding.base64Url().decode(armored), "UTF8"));

            return t;
        } catch (IOException | RuntimeException e) {
            // the exception tends to leak information about the token, so don't include it
            throw new MacGyverException("could not parse token");
        }

    }

    public static ApiToken createRandom() {
        try {
            ApiToken t = new ApiToken();

            byte[] accessKey = new byte[8];
            byte[] secretKey = new byte[16];
            SecureRandom.getInstance("SHA1PRNG").nextBytes(accessKey);
            SecureRandom.getInstance("SHA1PRNG").nextBytes(secretKey);

            t.data.put("a", BaseEncoding.base64().encode(accessKey));
            t.data.put("s", BaseEncoding.base64().encode(secretKey));

            return t;
        } catch (NoSuchAlgorithmException e) {
            throw new MacGyverException(e);
        }
    }
}