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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 "Incoming.h"
#include "Exception.h"
#include "ManagedConnection.h"
#include "Message.h"
#include "Session.h"
#include "qpid/amqp/descriptors.h"
#include "qpid/broker/AsyncCompletion.h"
#include "qpid/broker/Message.h"
#include "qpid/broker/Broker.h"
#include "qpid/log/Statement.h"
namespace qpid {
namespace broker {
namespace amqp {
Incoming::Incoming(pn_link_t* l, Broker& broker, Session& parent, const std::string& source, const std::string& target, const std::string& name)
: ManagedIncomingLink(broker, parent, source, target, name), credit(500), window(0), link(l), session(parent) {}
Incoming::~Incoming() {}
bool Incoming::doWork()
{
uint32_t c = getCredit();
bool issue = window < c;
if (issue) {
pn_link_flow(link, c - window);
window = c;
}
return issue;
}
bool Incoming::haveWork()
{
return window <= (getCredit()/2);
}
uint32_t Incoming::getCredit()
{
return credit;//TODO: proper flow control
}
void Incoming::detached(bool /*closed*/)
{
}
void Incoming::wakeup()
{
session.wakeup();
}
void Incoming::verify(const std::string& u, const std::string& r)
{
userid.init(u, r);
}
Incoming::UserId::UserId() : inDefaultRealm(false) {}
void Incoming::UserId::init(const std::string& u, const std::string& defaultRealm)
{
userid = u;
size_t at = userid.find('@');
if (at != std::string::npos) {
unqualified = userid.substr(0, at);
inDefaultRealm = defaultRealm == userid.substr(at+1);
}
}
void Incoming::UserId::verify(const std::string& claimed)
{
if(!userid.empty() && !claimed.empty() && userid != claimed && !(inDefaultRealm && claimed == unqualified)) {
throw Exception(qpid::amqp::error_conditions::NOT_ALLOWED, QPID_MSG("Authenticated user id is " << userid << " but user id in message declared as " << claimed));
}
}
namespace {
class Transfer : public qpid::broker::AsyncCompletion::Callback
{
public:
Transfer(pn_delivery_t* d, boost::shared_ptr<Session> s) : delivery(d), session(s) {}
void completed(bool sync) { session->accepted(delivery, sync); }
boost::intrusive_ptr<qpid::broker::AsyncCompletion::Callback> clone()
{
boost::intrusive_ptr<qpid::broker::AsyncCompletion::Callback> copy(new Transfer(delivery, session));
return copy;
}
private:
pn_delivery_t* delivery;
boost::shared_ptr<Session> session;
};
}
DecodingIncoming::DecodingIncoming(pn_link_t* link, Broker& broker, Session& parent, const std::string& source, const std::string& target, const std::string& name)
: Incoming(link, broker, parent, source, target, name), sessionPtr(parent.shared_from_this()) {}
DecodingIncoming::~DecodingIncoming() {}
void DecodingIncoming::readable(pn_delivery_t* delivery)
{
size_t pending = pn_delivery_pending(delivery);
size_t offset = partial ? partial->getSize() : 0;
boost::intrusive_ptr<Message> received(new Message(offset + pending));
if (partial) {
::memcpy(received->getData(), partial->getData(), offset);
partial = boost::intrusive_ptr<Message>();
}
assert(received->getSize() == pending + offset);
pn_link_recv(link, received->getData() + offset, pending);
if (pn_delivery_partial(delivery)) {
QPID_LOG(debug, "Message incomplete: received " << pending << " bytes, now have " << received->getSize());
partial = received;
} else {
incomingMessageReceived();
if (offset) {
QPID_LOG(debug, "Message complete: received " << pending << " bytes, " << received->getSize() << " in total");
} else {
QPID_LOG(debug, "Message received: " << received->getSize() << " bytes");
}
received->scan();
pn_link_advance(link);
received->setPublisher(&session.getParent());
received->computeExpiration();
--window;
deliver(received, delivery);
}
}
void DecodingIncoming::deliver(boost::intrusive_ptr<qpid::broker::amqp::Message> received, pn_delivery_t* delivery)
{
qpid::broker::Message message(received, received);
userid.verify(message.getUserId());
received->begin();
handle(message, session.getTransaction(delivery));
Transfer t(delivery, sessionPtr);
received->end(t);
}
}}} // namespace qpid::broker::amqp
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