1 files changed, 115 insertions, 0 deletions
diff --git a/Swiften/LinkLocal/BonjourQuerier.cpp b/Swiften/LinkLocal/BonjourQuerier.cpp
new file mode 100644
index 0000000..1ddbd9d
--- /dev/null
+++ b/Swiften/LinkLocal/BonjourQuerier.cpp
@@ -0,0 +1,115 @@
+#include "Swiften/LinkLocal/BonjourQuerier.h"
+
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <fcntl.h>
+
+#include "Swiften/EventLoop/MainEventLoop.h"
+#include "Swiften/LinkLocal/BonjourBrowseQuery.h"
+#include "Swiften/Base/foreach.h"
+
+namespace Swift {
+
+BonjourQuerier::BonjourQuerier() : stopRequested(false), thread(0) {
+	int fds[2];
+	int result = pipe(fds);
+	assert(result == 0);
+	interruptSelectReadSocket = fds[0];
+	fcntl(interruptSelectReadSocket, F_SETFL, fcntl(interruptSelectReadSocket, F_GETFL)|O_NONBLOCK);
+	interruptSelectWriteSocket = fds[1];
+	// TODO: Schedule thread
+}
+
+BonjourQuerier::~BonjourQuerier() {
+	stop();
+}
+
+boost::shared_ptr<DNSSDBrowseQuery> BonjourQuerier::createBrowseQuery() {
+	return boost::shared_ptr<DNSSDBrowseQuery>(new BonjourBrowseQuery(shared_from_this()));
+}
+
+void BonjourQuerier::addRunningQuery(boost::shared_ptr<BonjourQuery> query) {
+	{
+		boost::lock_guard<boost::mutex> lock(runningQueriesMutex);
+		runningQueries.push_back(query);
+	}
+	runningQueriesAvailableEvent.notify_one();
+	interruptSelect();
+}
+
+void BonjourQuerier::removeRunningQuery(boost::shared_ptr<BonjourQuery> query) {
+	{
+		boost::lock_guard<boost::mutex> lock(runningQueriesMutex);
+		runningQueries.erase(std::remove(
+			runningQueries.begin(), runningQueries.end(), query), runningQueries.end());
+	}
+}
+
+void BonjourQuerier::interruptSelect() {
+	char c = 0;
+	write(interruptSelectWriteSocket, &c, 1);
+}
+
+void BonjourQuerier::start() {
+	stop();
+	thread = new boost::thread(boost::bind(&BonjourQuerier::run, shared_from_this()));
+}
+
+void BonjourQuerier::stop() {
+	if (thread) {
+		stopRequested = true;
+		runningQueries.clear(); // TODO: Is this the right thing to do?
+		runningQueriesAvailableEvent.notify_one();
+		interruptSelect();
+		thread->join();
+		delete thread;
+		stopRequested = false;
+	}
+}
+
+void BonjourQuerier::run() {
+	while (!stopRequested) {
+		fd_set fdSet;
+		int maxSocket;
+		{
+			boost::unique_lock<boost::mutex> lock(runningQueriesMutex);
+			runningQueriesAvailableEvent.wait(lock);
+			if (runningQueries.empty()) {
+				continue;
+			}
+
+			// Run all running queries
+			FD_ZERO(&fdSet);
+			int maxSocket = interruptSelectReadSocket;
+			FD_SET(interruptSelectReadSocket, &fdSet);
+
+			foreach(const boost::shared_ptr<BonjourQuery>& query, runningQueries) {
+				int socketID = query->getSocketID();
+				maxSocket = std::max(maxSocket, socketID);
+				FD_SET(socketID, &fdSet);
+			}
+		}
+
+		if (select(maxSocket+1, &fdSet, NULL, NULL, 0) <= 0) {
+			continue;
+		}
+
+		if (FD_ISSET(interruptSelectReadSocket, &fdSet)) {
+			char dummy;
+			while (read(interruptSelectReadSocket, &dummy, 1) > 0) {}
+		}
+
+		{
+			boost::lock_guard<boost::mutex> lock(runningQueriesMutex);
+			foreach(const boost::shared_ptr<BonjourQuery>& query, runningQueries) {
+				if (FD_ISSET(query->getSocketID(), &fdSet)) {
+					MainEventLoop::postEvent(
+							boost::bind(&BonjourQuery::processResult, query), shared_from_this());
+				}
+			}
+		}
+	}
+}
+
+}