com.alphawallet.token.web.Ethereum.web3j.StructuredData Maven / Gradle / Ivy

/*
 * Copyright 2019 Web3 Labs Ltd.
 *
 * 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 com.alphawallet.token.web.Ethereum.web3j;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import java.util.HashMap;
import java.util.List;

/**
 * This class is here due to a bug in Web3j which prevented EIP712 working for some structures
 * The fix has been submitted to Web3j repo, when fixed this code can be removed. See also class StructuredDataEncoder
 */

public class StructuredData {
    public static class Entry {
        private final String name;
        private final String type;

        @JsonCreator
        public Entry(
            @JsonProperty(value = "name") String name,
            @JsonProperty(value = "type") String type) {
            this.name = name;
            this.type = type;
        }

        public String getName() {
            return name;
        }

        public String getType() {
            return type;
        }
    }

    public static class EIP712Domain {
        private final String name;
        private final String version;
        // Should be uint256, but this does not serialize, so this is a hack working as long as chainId is 64 bits
        private final Long chainId;
        // Should be Address, but this does not serialize
        private final String verifyingContract;
        private final String salt;

        @JsonCreator
        public EIP712Domain(
            @JsonProperty(value = "name") String name,
            @JsonProperty(value = "version") String version,
            @JsonProperty(value = "chainId") Long chainId,
            @JsonProperty(value = "verifyingContract") String verifyingContract,
            @JsonProperty(value = "salt") String salt) {
            this.name = name;
            this.version = version;
            this.chainId = chainId;
            this.verifyingContract = verifyingContract;
            this.salt = salt;
        }

        public String getName() {
            return name;
        }

        public String getVersion() {
            return version;
        }

        public Long getChainId() {
            return chainId;
        }

        public String getVerifyingContract() {
            return verifyingContract;
        }

        public String getSalt() {
            return salt;
        }
    }

    public static class EIP712Message {
        private final HashMap> types;
        private final String primaryType;
        private final Object message;
        private final EIP712Domain domain;

        @JsonCreator
        public EIP712Message(
            @JsonProperty(value = "types") HashMap> types,
            @JsonProperty(value = "primaryType") String primaryType,
            @JsonProperty(value = "message") Object message,
            @JsonProperty(value = "domain") EIP712Domain domain) {
            this.types = types;
            this.primaryType = primaryType;
            this.message = message;
            this.domain = domain;
        }

        public HashMap> getTypes() {
            return types;
        }

        public String getPrimaryType() {
            return primaryType;
        }

        public Object getMessage() {
            return message;
        }

        public EIP712Domain getDomain() {
            return domain;
        }

        @Override
        public String toString() {
            return "EIP712Message{"
                + "primaryType='"
                + this.primaryType
                + '\''
                + ", message='"
                + this.message
                + '\''
                + '}';
        }
    }
}