}

function cackeySSHAgentEncodeArray(input) {
	var result;

	result = cackeySSHAgentEncodeInt(input.length);
	input.forEach(function(element) {
		result = result.concat(cackeySSHAgentEncodeLV(element));
	});

	return(result);
}

function cackeySSHAgentDecodeArray(input) {
	var items, info;
	var itemCount;

	info = cackeySSHAgentDecodeInt(input);
	input = info.output;
	itemCount = info.value;

	items = [];
	while (itemCount > 0) {
		itemCount--;

		info = cackeySSHAgentDecodeLV(input);
		input = info.output;
		items.push(info.value);
	}

	return({
		value: items,
		output: input
	});
}


function cackeySSHAgentEncodeToUTF8Array(str) {
	var utf8 = [];

	if (typeof(str) === "string") {
		str = str.split("").map(function(c) {
			return(c.charCodeAt(0));

			buffer = buffer.join("");
			break;
	}

	return(buffer);
}

function cackeySSHAgentEncodeCertToKeyAndID(cert, sshKeyType) {
	var result = null, resultKey = null;
	var certObj, certBytes;
	var publicKey;

	certObj = new X509;
	if (!certObj) {
		return(result);
	}

	certBytes = Array.from(new Uint8Array(cert));

	certObj.readCertHex(cackeySSHAgentEncodeBinaryToHex(certBytes));

	publicKey = certObj.getPublicKey();

	switch (sshKeyType) {
		case "ssh":
			switch (publicKey.type) {
				case "RSA":
					resultKey = cackeySSHAgentEncodeString("ssh-rsa");
					resultKey = resultKey.concat(cackeySSHAgentEncodeBigInt(publicKey.e));
					resultKey = resultKey.concat(cackeySSHAgentEncodeBigInt(publicKey.n));
					break;
				default:
					console.log("[cackeySSH] Unsupported public key type:", sshKeyType, "/", publicKey.type, "-- ignoring.");
					break;
			}
			break;
		case "x509v3-sign":
			resultKey = certBytes;
			break;
		case "x509v3-ssh":
			switch (publicKey.type) {
				case "RSA":
					resultKey = cackeySSHAgentEncodeString("x509v3-ssh-rsa");

					/*
					 * Array of certificates
					 */
					resultKey = resultKey.concat(cackeySSHAgentEncodeArray([
						certBytes
					]));

					/*
					 * Array of OCSP responses
					 */
					resultKey = resultKey.concat(cackeySSHAgentEncodeArray([]));
					break;
				default:
					console.log("[cackeySSH] Unsupported public key type:", sshKeyType, "/", publicKey.type, "-- ignoring.");
					break;
			}
			break;
		default:
			console.log("[cackeySSH] Unsupported SSH key type:", sshKeyType, "-- ignoring.");
			break;
	}

	if (resultKey) {
		var certLabel;
		var certSAN;
		var ignoreException;

		/*
		 * Set a default label
		 */
		certLabel = certObj.getSubjectString();

		/*
		 * Try to find a better label from the certificate's
		 * Subject Alternative Name (SAN) extensions
		 */
		try {
			certSAN = certObj.getExtSubjectAltName2();
			certSAN.forEach(function(itemPair) {
				var itemType, itemValue;

				itemType = itemPair[0];
				itemValue = itemPair[1];

				if (itemType === "MAIL") {
					certLabel = itemValue;
				}
			});
		} catch (ignoreException) {
		}

		result = {
			label: certLabel,
			publicKeyType: publicKey.type,
			sshKeyType: sshKeyType,
			key: resultKey
		};
	}

	return(result);
}

function cackeySSHAgentDecodeCert(requestArray) {
}

/*
 * Command Handlers
 */
async function cackeySSHAgentCommandRequestIdentity(request) {
	var response;
	var certs = [];

	 */
	response = [];

	response.push(cackeySSHAgentMessage.SSH_AGENT_IDENTITIES_ANSWER);
	response = response.concat(cackeySSHAgentEncodeInt(keys.length));
	keys.forEach(function(key) {
		response = response.concat(cackeySSHAgentEncodeLV(key.key));
		response = response.concat(cackeySSHAgentEncodeString(key.label));
	});

	return(response);
}

async function cackeySSHAgentCommandSignRequest(request) {
	var keyInfo, data, flags;
	var certs, certToUse, certToUseType;
	var hashMethod, signedData, signedDataHeader, signRequest;
	var decryptedData, decryptRequest;
	var operation, response;
	var flagMeaning = {
		SSH_AGENT_RSA_SHA2_256: 2,
		SSH_AGENT_RSA_SHA2_512: 4,
		SSH_AGENT_RSA_RAW:      0x40000000,
		SSH_AGENT_RSA_DECRYPT:  0x80000000
	};

	/*
	 * Default mode is signing
	 */
	operation = "sign";

	/*
	 * Strip off the command
	 */
	request = request.slice(1);

	/*
	 * Get certificate to sign using

		case "RSA":
			if ((flags & flagMeaning.SSH_AGENT_RSA_SHA2_512) == flagMeaning.SSH_AGENT_RSA_SHA2_512) {
				hashMethod = "SHA512";
				data = await crypto.subtle.digest("SHA-512", new Uint8Array(data));
			} else if ((flags & flagMeaning.SSH_AGENT_RSA_SHA2_256) == flagMeaning.SSH_AGENT_RSA_SHA2_256) {
				hashMethod = "SHA256";
				data = await crypto.subtle.digest("SHA-256", new Uint8Array(data));
			} else if (flags == (flagMeaning.SSH_AGENT_RSA_RAW | flagMeaning.SSH_AGENT_RSA_DECRYPT)) {
				operation = "decrypt";
				data = new Uint8Array(data);
			} else if (flags == flagMeaning.SSH_AGENT_RSA_RAW) {
				hashMethod = "RAW";
				data = new Uint8Array(data);
			} else if (flags == 0) {
				hashMethod = "SHA1";
				data = await crypto.subtle.digest("SHA-1", new Uint8Array(data));
			} else {
				console.info("[cackeySSH] Sign request with flags set to", flags, "which is unsupported, failing the request.");

				return(null);
			}

			switch (hashMethod) {
				case "RAW":
					signedDataHeader = cackeySSHAgentEncodeString("rsa");
					break;
				case "SHA1":
					signedDataHeader = cackeySSHAgentEncodeString("ssh-rsa");
					break;
				case "SHA256":
					signedDataHeader = cackeySSHAgentEncodeString("rsa-sha2-256");
					break;
				case "SHA512":

			console.info("[cackeySSH] Unsupported public key type:", certToUseType, "failing the request.");

			return(null);
			break;
	}

	/*
	 * Sign or decrypt the data
	 */
	switch (operation) {
		case "sign":
			signRequest = {
				hash: hashMethod,
				certificate: certToUse.certificate,
				digest: new Uint8Array(data)
			};

			if (goog.DEBUG) {
				console.log("[cackeySSH] Requesting CACKey sign message:", signRequest);
			}

			signedData = await cackeySignMessage(signRequest);
			signedData = Array.from(new Uint8Array(signedData));
			break;
		case "decrypt":
			/* XXX:TODO: Incomplete ! */
			decryptRequest = {
				data: data
			}
			break;
	}

	/*
	 * Encode signature
	 */
	signedData = signedDataHeader.concat(cackeySSHAgentEncodeLV(signedData));

	/*

/*
 * Session handling
 */
async function cackeySSHAgentHandleMessage(socket, request) {
	var sshRequestID, sshRequest, response, sshResponse;
	var sshHandlerError;
	var postMessageException;

	if (!request.type || request.type !== "auth-agent@openssh.com") {
		return;
	}

	if (!request.data || request.data.length < 1) {
		return;

		data: response
	};

	if (goog.DEBUG) {
		console.log("[cackeySSH] Response: ", sshResponse);
	}

	try {
		socket.postMessage(sshResponse);
	} catch (postMessageException) {
		if (goog.DEBUG) {
			console.log("[cackeySSH] Failed to send response", postMessageException);
		}
	}

	return;
}

function cackeySSHAgentAcceptConnection(socket) {
	if (!socket) {
		return;