/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project .
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License , v . 2 . 0 . If a copy of the MPL was not distributed with this
* file , You can obtain one at http : //mozilla.org/MPL/2.0/.
*/
#include <errno.h>
#include <string.h>
#include <iostream>
#include <osl/socket.hxx>
#include <config_features.h>
#include <sal/log.hxx>
#include "DiscoveryService.hxx"
#include "ZeroconfService.hxx"
struct sockaddr_in;
#ifdef _WIN32
// LO vs WinAPI conflict
#undef WB_LEFT
#undef WB_RIGHT
#include <winsock2.h>
#include <ws2tcpip.h>
#include "WINNetworkService.hxx"
typedef int socklen_t;
#else
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#ifdef MACOSX
#include <osl/conditn.hxx>
#include <premac.h>
#import <CoreFoundation/CoreFoundation.h>
#include <postmac.h>
#import "OSXNetworkService.hxx"
#endif
#if HAVE_FEATURE_AVAHI
#include "AvahiNetworkService.hxx"
#endif
using namespace osl;
using namespace sd;
DiscoveryService::DiscoveryService()
: mSocket(-1 )
, zService(nullptr)
{
}
DiscoveryService::~DiscoveryService()
{
if (mSocket != -1 )
{
#ifdef _WIN32
closesocket( mSocket );
#else
close( mSocket );
#endif
}
if (zService)
zService->clear();
}
void DiscoveryService::setupSockets()
{
#ifdef MACOSX
// Bonjour for OSX
zService = new OSXNetworkService();
zService->setup();
#endif
#if HAVE_FEATURE_AVAHI
// Avahi for Linux
char hostname[1024 ];
hostname[1023 ] = '\0' ;
gethostname(hostname, 1023 );
zService = new AvahiNetworkService(hostname);
zService->setup();
#endif
#ifdef _WIN32
zService = new WINNetworkService();
zService->setup();
#endif
// Old implementation for backward compatibility matter
mSocket = socket( AF_INET, SOCK_DGRAM, IPPROTO_UDP );
if (mSocket == -1 )
{
SAL_WARN("sd" , "DiscoveryService: socket failed: " << errno);
return ; // would be better to throw, but unsure if caller handles that
}
sockaddr_in aAddr = {};
aAddr.sin_family = AF_INET;
aAddr.sin_addr.s_addr = htonl(INADDR_ANY);
aAddr.sin_port = htons( PORT_DISCOVERY );
int rc = bind( mSocket, reinterpret_cast <sockaddr*>(&aAddr), sizeof (sockaddr_in) );
if (rc)
{
SAL_WARN("sd" , "DiscoveryService: bind failed: " << errno);
return ; // would be better to throw, but unsure if caller handles that
}
struct ip_mreq multicastRequest;
multicastRequest.imr_multiaddr.s_addr = htonl((239 U << 24 ) | 1 U); // 239.0.0.1
multicastRequest.imr_interface.s_addr = htonl(INADDR_ANY);
rc = setsockopt( mSocket, IPPROTO_IP, IP_ADD_MEMBERSHIP,
#ifdef _WIN32
reinterpret_cast <const char *>(&multicastRequest),
#else
&multicastRequest,
#endif
sizeof (multicastRequest));
if (rc)
{
SAL_WARN("sd" , "DiscoveryService: setsockopt failed: " << errno);
return ; // would be better to throw, but unsure if caller handles that
}
}
void SAL_CALL DiscoveryService::run()
{
osl::Thread::setName("DiscoveryService" );
setupSockets();
// Kept for backward compatibility
while ( true )
{
char aBuffer[BUFFER_SIZE] = {};
sockaddr_in aAddr;
socklen_t aLen = sizeof ( aAddr );
if (recvfrom( mSocket, aBuffer, BUFFER_SIZE, 0 , reinterpret_cast <sockaddr*>(&aAddr), &aLen ) > 0 )
{
OString aString( aBuffer, strlen( "LOREMOTE_SEARCH" ) );
if ( aString == "LOREMOTE_SEARCH" )
{
OString aStringBuffer = "LOREMOTE_ADVERTISE\n" +
OUStringToOString(osl::SocketAddr::getLocalHostname(), RTL_TEXTENCODING_UTF8 ) +
"\n\n" ;
if ( sendto( mSocket, aStringBuffer.getStr(),
aStringBuffer.getLength(), 0 , reinterpret_cast <sockaddr*>(&aAddr),
sizeof (aAddr) ) <= 0 )
{
// Write error or closed socket -- we are done.
return ;
}
}
}
else
{
// Read error or closed socket -- we are done.
return ;
}
}
}
DiscoveryService *sd::DiscoveryService::spService = nullptr;
void DiscoveryService::setup()
{
if (spService)
return ;
spService = new DiscoveryService();
spService->create();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Messung V0.5 in Prozent C=93 H=96 G=94
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-09-29)
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