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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 "qpid/sys/ssl/SslHandler.h"
#include "qpid/sys/ssl/SslIo.h"
#include "qpid/sys/ssl/SslSocket.h"
#include "qpid/framing/AMQP_HighestVersion.h"
#include "qpid/framing/ProtocolInitiation.h"
#include "qpid/log/Statement.h"
#include <boost/bind.hpp>
namespace qpid {
namespace sys {
namespace ssl {
// Buffer definition
struct Buff : public SslIO::BufferBase {
Buff() :
SslIO::BufferBase(new char[65536], 65536)
{}
~Buff()
{ delete [] bytes;}
};
SslHandler::SslHandler(std::string id, ConnectionCodec::Factory* f, bool _nodict) :
identifier(id),
aio(0),
factory(f),
codec(0),
readError(false),
isClient(false),
nodict(_nodict)
{}
SslHandler::~SslHandler() {
if (codec)
codec->closed();
delete codec;
}
void SslHandler::init(SslIO* a, int numBuffs) {
aio = a;
// Give connection some buffers to use
for (int i = 0; i < numBuffs; i++) {
aio->queueReadBuffer(new Buff);
}
}
void SslHandler::write(const framing::ProtocolInitiation& data)
{
QPID_LOG(debug, "SENT [" << identifier << "] INIT(" << data << ")");
SslIO::BufferBase* buff = aio->getQueuedBuffer();
if (!buff)
buff = new Buff;
framing::Buffer out(buff->bytes, buff->byteCount);
data.encode(out);
buff->dataCount = data.encodedSize();
aio->queueWrite(buff);
}
void SslHandler::abort() {
// TODO: can't implement currently as underlying functionality not implemented
// aio->requestCallback(boost::bind(&SslHandler::eof, this, _1));
}
void SslHandler::activateOutput() {
aio->notifyPendingWrite();
}
void SslHandler::giveReadCredit(int32_t) {
// FIXME aconway 2008-12-05: not yet implemented.
}
// Input side
void SslHandler::readbuff(SslIO& , SslIO::BufferBase* buff) {
if (readError) {
return;
}
size_t decoded = 0;
if (codec) { // Already initiated
try {
decoded = codec->decode(buff->bytes+buff->dataStart, buff->dataCount);
}catch(const std::exception& e){
QPID_LOG(error, e.what());
readError = true;
aio->queueWriteClose();
}
}else{
framing::Buffer in(buff->bytes+buff->dataStart, buff->dataCount);
framing::ProtocolInitiation protocolInit;
if (protocolInit.decode(in)) {
decoded = in.getPosition();
QPID_LOG(debug, "RECV [" << identifier << "] INIT(" << protocolInit << ")");
try {
codec = factory->create(protocolInit.getVersion(), *this, identifier, getSecuritySettings(aio));
if (!codec) {
//TODO: may still want to revise this...
//send valid version header & close connection.
write(framing::ProtocolInitiation(framing::highestProtocolVersion));
readError = true;
aio->queueWriteClose();
}
} catch (const std::exception& e) {
QPID_LOG(error, e.what());
readError = true;
aio->queueWriteClose();
}
}
}
// TODO: unreading needs to go away, and when we can cope
// with multiple sub-buffers in the general buffer scheme, it will
if (decoded != size_t(buff->dataCount)) {
// Adjust buffer for used bytes and then "unread them"
buff->dataStart += decoded;
buff->dataCount -= decoded;
aio->unread(buff);
} else {
// Give whole buffer back to aio subsystem
aio->queueReadBuffer(buff);
}
}
void SslHandler::eof(SslIO&) {
QPID_LOG(debug, "DISCONNECTED [" << identifier << "]");
if (codec) codec->closed();
aio->queueWriteClose();
}
void SslHandler::closedSocket(SslIO&, const SslSocket& s) {
// If we closed with data still to send log a warning
if (!aio->writeQueueEmpty()) {
QPID_LOG(warning, "CLOSING [" << identifier << "] unsent data (probably due to client disconnect)");
}
delete &s;
aio->queueForDeletion();
delete this;
}
void SslHandler::disconnect(SslIO& a) {
// treat the same as eof
eof(a);
}
// Notifications
void SslHandler::nobuffs(SslIO&) {
}
void SslHandler::idle(SslIO&){
if (isClient && codec == 0) {
codec = factory->create(*this, identifier, getSecuritySettings(aio));
write(framing::ProtocolInitiation(codec->getVersion()));
return;
}
if (codec == 0) return;
if (codec->canEncode()) {
// Try and get a queued buffer if not then construct new one
SslIO::BufferBase* buff = aio->getQueuedBuffer();
if (!buff) buff = new Buff;
size_t encoded=codec->encode(buff->bytes, buff->byteCount);
buff->dataCount = encoded;
aio->queueWrite(buff);
}
if (codec->isClosed())
aio->queueWriteClose();
}
SecuritySettings SslHandler::getSecuritySettings(SslIO* aio)
{
SecuritySettings settings = aio->getSecuritySettings();
settings.nodict = nodict;
return settings;
}
}}} // namespace qpid::sys::ssl
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