97 lines
4.3 KiB
Java
97 lines
4.3 KiB
Java
package net.minecraft.world.entity.player;
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import com.mojang.serialization.Codec;
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import com.mojang.serialization.codecs.RecordCodecBuilder;
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import com.mojang.serialization.codecs.RecordCodecBuilder.Instance;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.security.PublicKey;
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import java.time.Duration;
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import java.time.Instant;
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import java.util.Arrays;
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import java.util.UUID;
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import net.minecraft.network.FriendlyByteBuf;
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import net.minecraft.network.chat.Component;
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import net.minecraft.network.chat.ThrowingComponent;
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import net.minecraft.util.Crypt;
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import net.minecraft.util.ExtraCodecs;
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import net.minecraft.util.SignatureValidator;
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public record ProfilePublicKey(ProfilePublicKey.Data data) {
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public static final Component EXPIRED_PROFILE_PUBLIC_KEY = Component.translatable("multiplayer.disconnect.expired_public_key");
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private static final Component INVALID_SIGNATURE = Component.translatable("multiplayer.disconnect.invalid_public_key_signature");
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public static final Duration EXPIRY_GRACE_PERIOD = Duration.ofHours(8L);
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public static final Codec<ProfilePublicKey> TRUSTED_CODEC = ProfilePublicKey.Data.CODEC.xmap(ProfilePublicKey::new, ProfilePublicKey::data);
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public static ProfilePublicKey createValidated(SignatureValidator p_243373_, UUID p_243390_, ProfilePublicKey.Data p_243374_) throws ProfilePublicKey.ValidationException {
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if (!p_243374_.validateSignature(p_243373_, p_243390_)) {
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throw new ProfilePublicKey.ValidationException(INVALID_SIGNATURE);
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} else {
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return new ProfilePublicKey(p_243374_);
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}
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}
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public SignatureValidator createSignatureValidator() {
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return SignatureValidator.from(this.data.key, "SHA256withRSA");
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}
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public record Data(Instant expiresAt, PublicKey key, byte[] keySignature) {
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private static final int MAX_KEY_SIGNATURE_SIZE = 4096;
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public static final Codec<ProfilePublicKey.Data> CODEC = RecordCodecBuilder.create(
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p_219814_ -> p_219814_.group(
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ExtraCodecs.INSTANT_ISO8601.fieldOf("expires_at").forGetter(ProfilePublicKey.Data::expiresAt),
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Crypt.PUBLIC_KEY_CODEC.fieldOf("key").forGetter(ProfilePublicKey.Data::key),
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ExtraCodecs.BASE64_STRING.fieldOf("signature_v2").forGetter(ProfilePublicKey.Data::keySignature)
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)
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.apply(p_219814_, ProfilePublicKey.Data::new)
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);
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public Data(FriendlyByteBuf p_219809_) {
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this(p_219809_.readInstant(), p_219809_.readPublicKey(), p_219809_.readByteArray(4096));
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}
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public void write(FriendlyByteBuf p_219816_) {
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p_219816_.writeInstant(this.expiresAt);
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p_219816_.writePublicKey(this.key);
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p_219816_.writeByteArray(this.keySignature);
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}
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boolean validateSignature(SignatureValidator p_240296_, UUID p_240297_) {
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return p_240296_.validate(this.signedPayload(p_240297_), this.keySignature);
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}
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private byte[] signedPayload(UUID p_240267_) {
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byte[] abyte = this.key.getEncoded();
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byte[] abyte1 = new byte[24 + abyte.length];
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ByteBuffer bytebuffer = ByteBuffer.wrap(abyte1).order(ByteOrder.BIG_ENDIAN);
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bytebuffer.putLong(p_240267_.getMostSignificantBits())
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.putLong(p_240267_.getLeastSignificantBits())
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.putLong(this.expiresAt.toEpochMilli())
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.put(abyte);
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return abyte1;
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}
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public boolean hasExpired() {
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return this.expiresAt.isBefore(Instant.now());
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}
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public boolean hasExpired(Duration p_243376_) {
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return this.expiresAt.plus(p_243376_).isBefore(Instant.now());
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}
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@Override
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public boolean equals(Object p_219822_) {
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return !(p_219822_ instanceof ProfilePublicKey.Data profilepublickey$data)
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? false
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: this.expiresAt.equals(profilepublickey$data.expiresAt)
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&& this.key.equals(profilepublickey$data.key)
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&& Arrays.equals(this.keySignature, profilepublickey$data.keySignature);
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}
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}
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public static class ValidationException extends ThrowingComponent {
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public ValidationException(Component p_243378_) {
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super(p_243378_);
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}
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}
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} |