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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*
*/
#include "config.h"
#include "PreviewConnectionHandler.h"
#include "PreviewConnection.h"
#include "qpid/framing/ConnectionStartBody.h"
#include "qpid/framing/ClientInvoker.h"
#include "qpid/framing/ServerInvoker.h"
#include "qpid/log/Statement.h"
#if HAVE_SASL
#include <sasl/sasl.h>
#endif
using namespace qpid;
using namespace qpid::broker;
using namespace qpid::framing;
namespace
{
const std::string PLAIN = "PLAIN";
const std::string en_US = "en_US";
}
void PreviewConnectionHandler::close(ReplyCode code, const string& text, ClassId classId, MethodId methodId)
{
handler->client.close(code, text, classId, methodId);
}
void PreviewConnectionHandler::handle(framing::AMQFrame& frame)
{
AMQMethodBody* method=frame.getBody()->getMethod();
try{
if (handler->serverMode) {
if (!invoke(static_cast<AMQP_ServerOperations::ConnectionHandler&>(*handler.get()), *method))
throw ChannelErrorException(QPID_MSG("Class can't be accessed over channel 0"));
} else {
if (!invoke(static_cast<AMQP_ClientOperations::ConnectionHandler&>(*handler.get()), *method))
throw ChannelErrorException(QPID_MSG("Class can't be accessed over channel 0"));
}
}catch(ConnectionException& e){
handler->client.close(e.code, e.what(), method->amqpClassId(), method->amqpMethodId());
}catch(std::exception& e){
handler->client.close(541/*internal error*/, e.what(), method->amqpClassId(), method->amqpMethodId());
}
}
PreviewConnectionHandler::PreviewConnectionHandler(PreviewConnection& connection, bool isClient) : handler(new Handler(connection)) {
FieldTable properties;
string mechanisms(PLAIN);
string locales(en_US);
if (isClient) {
handler->serverMode = false;
}else {
handler->serverMode = true;
handler->client.start(99, 0, properties, mechanisms, locales);
}
}
PreviewConnectionHandler::Handler:: Handler(PreviewConnection& c) : client(c.getOutput()), server(c.getOutput()),
connection(c), serverMode(false) {}
void PreviewConnectionHandler::Handler::startOk(const framing::FieldTable& /*clientProperties*/,
const string& mechanism,
const string& response, const string& /*locale*/)
{
//TODO: handle SASL mechanisms more cleverly
if (mechanism == PLAIN) {
QPID_LOG(info, "SASL Plain: Attempting authentication");
if (response.size() > 0 && response[0] == (char) 0) {
string temp = response.substr(1);
string::size_type i = temp.find((char)0);
string uid = temp.substr(0, i);
string pwd = temp.substr(i + 1);
#if HAVE_SASL
if (connection.getBroker().getOptions().auth) {
int code = sasl_server_new(BROKER_SASL_NAME,
NULL, NULL, NULL, NULL, NULL, 0,
&connection.sasl_conn);
if (SASL_OK != code) {
QPID_LOG(info, "SASL Plain: Connection creation failed: "
<< sasl_errdetail(connection.sasl_conn));
// TODO: Change this to an exception signaling
// server error, when one is available
throw CommandInvalidException("Unable to perform authentication");
}
code = sasl_checkpass(connection.sasl_conn,
uid.c_str(), uid.length(),
pwd.c_str(), pwd.length());
if (SASL_OK == code) {
QPID_LOG(info, "SASL Plain: Authentication accepted for " << uid);
} else {
// See man sasl_errors(3) or sasl/sasl.h for possible errors
QPID_LOG(info, "SASL Plain: Authentication rejected for "
<< uid << ": "
<< sasl_errdetail(connection.sasl_conn));
// TODO: Change this to an exception signaling
// authentication failure, when one is available
throw ConnectionForcedException("Authentication failed");
}
} else {
#endif
QPID_LOG(warning,
"SASL Plain Warning: No Authentication Performed for "
<< uid);
#if HAVE_SASL
}
#endif
connection.setUserId(uid);
}
} else {
// The 0-10 spec states that if the client requests a
// mechanism not proposed by the server the server MUST
// close the connection. Assumption here is if we proposed
// a mechanism we'd have a case for it above.
throw NotImplementedException("Unsupported authentication mechanism");
}
client.tune(framing::CHANNEL_MAX, connection.getFrameMax(), connection.getHeartbeat());
}
void PreviewConnectionHandler::Handler::secureOk(const string& /*response*/){}
void PreviewConnectionHandler::Handler::tuneOk(uint16_t /*channelmax*/,
uint32_t framemax, uint16_t heartbeat)
{
connection.setFrameMax(framemax);
connection.setHeartbeat(heartbeat);
}
void PreviewConnectionHandler::Handler::open(const string& /*virtualHost*/,
const string& /*capabilities*/, bool /*insist*/)
{
string knownhosts;
client.openOk(knownhosts);
}
void PreviewConnectionHandler::Handler::close(uint16_t /*replyCode*/, const string& /*replyText*/,
uint16_t /*classId*/, uint16_t /*methodId*/)
{
client.closeOk();
connection.getOutput().close();
}
void PreviewConnectionHandler::Handler::closeOk(){
connection.getOutput().close();
}
void PreviewConnectionHandler::Handler::start(uint8_t /*versionMajor*/,
uint8_t /*versionMinor*/,
const FieldTable& /*serverProperties*/,
const string& /*mechanisms*/,
const string& /*locales*/)
{
string uid = "qpidd";
string pwd = "qpidd";
string response = ((char)0) + uid + ((char)0) + pwd;
server.startOk(FieldTable(), PLAIN, response, en_US);
}
void PreviewConnectionHandler::Handler::secure(const string& /*challenge*/)
{
server.secureOk("");
}
void PreviewConnectionHandler::Handler::tune(uint16_t channelMax,
uint32_t frameMax,
uint16_t heartbeat)
{
connection.setFrameMax(frameMax);
connection.setHeartbeat(heartbeat);
server.tuneOk(channelMax, frameMax, heartbeat);
server.open("/", "", true);
}
void PreviewConnectionHandler::Handler::openOk(const string& /*knownHosts*/)
{
}
void PreviewConnectionHandler::Handler::redirect(const string& /*host*/, const string& /*knownHosts*/)
{
}
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