node-query/node_modules/mysql2/lib/commands/server_handshake.js

99 lines
3.0 KiB
JavaScript

var Command = require('./command');
var Packets = require('../packets/index.js');
var util = require('util');
var ClientConstants = require('../constants/client');
var CommandCode = require('../constants/commands');
function ServerHandshake(args)
{
Command.call(this);
this.args = args;
/*
this.protocolVersion = args.protocolVersion || 10;
this.serverVersion = args.serverVersion;
this.connectionId = args.connectionId,
this.statusFlags = args.statusFlags,
this.characterSet = args.characterSet,
this.capabilityFlags = args.capabilityFlags || 512;
*/
}
util.inherits(ServerHandshake, Command);
ServerHandshake.prototype.start = function(packet, connection) {
var serverHelloPacket = new Packets.Handshake(this.args);
serverHelloPacket.setScrambleData(function(err) {
connection.writePacket(serverHelloPacket.toPacket(0));
});
return ServerHandshake.prototype.readClientReply;
};
ServerHandshake.prototype.readClientReply = function(packet, connection) {
// TODO connection.writeOk();
var ok = new Buffer([0x07, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00]);
connection.write(ok);
return ServerHandshake.prototype.dispatchCommands;
};
ServerHandshake.prototype.dispatchCommands = function(packet, connection) {
// command from client to server
var commandCode = packet.readInt8();
switch (commandCode) {
case CommandCode.QUIT:
connection.stream.end();
break;
case CommandCode.INIT_DB:
var schemaName = packet.readString();
connection.emit('init_db', schemaName);
connection.writeOk();
break;
case CommandCode.PING:
// allow custom ping response (delayed/incorrect/etc)
// if no listeners, respond with OK
if (connection.listeners('ping').length === 0) {
connection.writeOk();
} else {
connection.emit('ping');
}
break;
case CommandCode.QUERY:
var query = packet.readString();
connection.emit('query', query);
break;
case CommandCode.FIELD_LIST:
var table = packet.readNullTerminatedString();
var fields = packet.readString();
connection.emit('field_list', table, fields);
break;
default:
console.log('Unknown command:', commandCode);
}
return ServerHandshake.prototype.dispatchCommands;
};
module.exports = ServerHandshake;
// TODO: implement server-side 4.1 authentication
/*
4.1 authentication: (http://bazaar.launchpad.net/~mysql/mysql-server/5.5/view/head:/sql/password.c)
SERVER: public_seed=create_random_string()
send(public_seed)
CLIENT: recv(public_seed)
hash_stage1=sha1("password")
hash_stage2=sha1(hash_stage1)
reply=xor(hash_stage1, sha1(public_seed,hash_stage2)
// this three steps are done in scramble()
send(reply)
SERVER: recv(reply)
hash_stage1=xor(reply, sha1(public_seed,hash_stage2))
candidate_hash2=sha1(hash_stage1)
check(candidate_hash2==hash_stage2)
server stores sha1(sha1(password)) ( hash_stag2)
*/