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/*
* libjingle
* Copyright 2009 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TALK_BASE_FAKENETWORK_H_
#define TALK_BASE_FAKENETWORK_H_
#include <string>
#include <vector>
#include "talk/base/network.h"
#include "talk/base/messagehandler.h"
#include "talk/base/socketaddress.h"
#include "talk/base/stringencode.h"
#include "talk/base/thread.h"
namespace talk_base {
const int kFakeIPv4NetworkPrefixLength = 24;
const int kFakeIPv6NetworkPrefixLength = 64;
// Fake network manager that allows us to manually specify the IPs to use.
class FakeNetworkManager : public NetworkManagerBase,
public MessageHandler {
public:
FakeNetworkManager()
: thread_(Thread::Current()),
next_index_(0),
started_(false),
sent_first_update_(false) {
}
typedef std::vector<SocketAddress> IfaceList;
void AddInterface(const SocketAddress& iface) {
// ensure a unique name for the interface
SocketAddress address("test" + talk_base::ToString(next_index_++), 0);
address.SetResolvedIP(iface.ipaddr());
ifaces_.push_back(address);
DoUpdateNetworks();
}
void RemoveInterface(const SocketAddress& iface) {
for (IfaceList::iterator it = ifaces_.begin();
it != ifaces_.end(); ++it) {
if (it->EqualIPs(iface)) {
ifaces_.erase(it);
break;
}
}
DoUpdateNetworks();
}
virtual void StartUpdating() {
if (started_) {
if (sent_first_update_)
SignalNetworksChanged();
return;
}
started_ = true;
sent_first_update_ = false;
thread_->Post(this);
}
virtual void StopUpdating() {
started_ = false;
}
// MessageHandler interface.
virtual void OnMessage(Message* msg) {
DoUpdateNetworks();
}
private:
void DoUpdateNetworks() {
if (!started_)
return;
std::vector<Network*> networks;
for (IfaceList::iterator it = ifaces_.begin();
it != ifaces_.end(); ++it) {
int prefix_length = 0;
if (it->ipaddr().family() == AF_INET) {
prefix_length = kFakeIPv4NetworkPrefixLength;
} else if (it->ipaddr().family() == AF_INET6) {
prefix_length = kFakeIPv6NetworkPrefixLength;
}
IPAddress prefix = TruncateIP(it->ipaddr(), prefix_length);
scoped_ptr<Network> net(new Network(it->hostname(),
it->hostname(),
prefix,
prefix_length));
net->AddIP(it->ipaddr());
networks.push_back(net.release());
}
bool changed;
MergeNetworkList(networks, &changed);
if (changed || !sent_first_update_) {
SignalNetworksChanged();
sent_first_update_ = true;
}
}
Thread* thread_;
IfaceList ifaces_;
int next_index_;
bool started_;
bool sent_first_update_;
};
} // namespace talk_base
#endif // TALK_BASE_FAKENETWORK_H_
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