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/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2002 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "net/NetworkAddress.h"
#include "net/XSocket.h"
#include "arch/Arch.h"
#include "arch/XArch.h"
#include <cstdlib>
//
// NetworkAddress
//
// name re-resolution adapted from a patch by Brent Priddy.
NetworkAddress::NetworkAddress() :
m_address(NULL),
m_hostname(),
m_port(0)
{
// note -- make no calls to Network socket interface here;
// we're often called prior to Network::init().
}
NetworkAddress::NetworkAddress(int port) :
m_address(NULL),
m_hostname(),
m_port(port)
{
checkPort();
m_address = ARCH->newAnyAddr(IArchNetwork::kINET);
ARCH->setAddrPort(m_address, m_port);
}
NetworkAddress::NetworkAddress(const NetworkAddress& addr) :
m_address(addr.m_address != NULL ? ARCH->copyAddr(addr.m_address) : NULL),
m_hostname(addr.m_hostname),
m_port(addr.m_port)
{
// do nothing
}
NetworkAddress::NetworkAddress(const String& hostname, int port) :
m_address(NULL),
m_hostname(hostname),
m_port(port)
{
// check for port suffix
String::size_type i = m_hostname.rfind(':');
if (i != String::npos && i + 1 < m_hostname.size()) {
// found a colon. see if it looks like an IPv6 address.
bool colonNotation = false;
bool dotNotation = false;
bool doubleColon = false;
for (String::size_type j = 0; j < i; ++j) {
if (m_hostname[j] == ':') {
colonNotation = true;
dotNotation = false;
if (m_hostname[j + 1] == ':') {
doubleColon = true;
}
}
else if (m_hostname[j] == '.' && colonNotation) {
dotNotation = true;
}
}
// port suffix is ambiguous with IPv6 notation if there's
// a double colon and the end of the address is not in dot
// notation. in that case we assume it's not a port suffix.
// the user can replace the double colon with zeros to
// disambiguate.
if ((!doubleColon || dotNotation) && !colonNotation) {
// parse port from hostname
char* end;
const char* chostname = m_hostname.c_str();
long suffixPort = strtol(chostname + i + 1, &end, 10);
if (end == chostname + i + 1 || *end != '\0') {
throw XSocketAddress(XSocketAddress::kBadPort,
m_hostname, m_port);
}
// trim port from hostname
m_hostname.erase(i);
// save port
m_port = static_cast<int>(suffixPort);
}
}
// check port number
checkPort();
}
NetworkAddress::~NetworkAddress()
{
if (m_address != NULL) {
ARCH->closeAddr(m_address);
}
}
NetworkAddress&
NetworkAddress::operator=(const NetworkAddress& addr)
{
ArchNetAddress newAddr = NULL;
if (addr.m_address != NULL) {
newAddr = ARCH->copyAddr(addr.m_address);
}
if (m_address != NULL) {
ARCH->closeAddr(m_address);
}
m_address = newAddr;
m_hostname = addr.m_hostname;
m_port = addr.m_port;
return *this;
}
void
NetworkAddress::resolve()
{
// discard previous address
if (m_address != NULL) {
ARCH->closeAddr(m_address);
m_address = NULL;
}
try {
// if hostname is empty then use wildcard address otherwise look
// up the name.
if (m_hostname.empty()) {
m_address = ARCH->newAnyAddr(IArchNetwork::kINET);
}
else {
m_address = ARCH->nameToAddr(m_hostname);
}
}
catch (XArchNetworkNameUnknown&) {
throw XSocketAddress(XSocketAddress::kNotFound, m_hostname, m_port);
}
catch (XArchNetworkNameNoAddress&) {
throw XSocketAddress(XSocketAddress::kNoAddress, m_hostname, m_port);
}
catch (XArchNetworkNameUnsupported&) {
throw XSocketAddress(XSocketAddress::kUnsupported, m_hostname, m_port);
}
catch (XArchNetworkName&) {
throw XSocketAddress(XSocketAddress::kUnknown, m_hostname, m_port);
}
// set port in address
ARCH->setAddrPort(m_address, m_port);
}
bool
NetworkAddress::operator==(const NetworkAddress& addr) const
{
return ARCH->isEqualAddr(m_address, addr.m_address);
}
bool
NetworkAddress::operator!=(const NetworkAddress& addr) const
{
return !operator==(addr);
}
bool
NetworkAddress::isValid() const
{
return (m_address != NULL);
}
const ArchNetAddress&
NetworkAddress::getAddress() const
{
return m_address;
}
int
NetworkAddress::getPort() const
{
return m_port;
}
String
NetworkAddress::getHostname() const
{
return m_hostname;
}
void
NetworkAddress::checkPort()
{
// check port number
if (m_port <= 0 || m_port > 65535) {
throw XSocketAddress(XSocketAddress::kBadPort, m_hostname, m_port);
}
}
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