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-rw-r--r--sd/source/ui/remotecontrol/DiscoveryService.cxx186
1 files changed, 186 insertions, 0 deletions
diff --git a/sd/source/ui/remotecontrol/DiscoveryService.cxx b/sd/source/ui/remotecontrol/DiscoveryService.cxx
new file mode 100644
index 000000000..bdd0b51c8
--- /dev/null
+++ b/sd/source/ui/remotecontrol/DiscoveryService.cxx
@@ -0,0 +1,186 @@
+/* -*- 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"
+
+#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((239U << 24) | 1U); // 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: */