5th try

initial checkin of X11 Opie stuff
it features an IPC Server
the client is todo
this will become the OPIE X11 department
including
alternative QPEApplication, QCOP replacement

1 files changed, 383 insertions, 0 deletions

diff --git a/x11/ipc/server/ocopserver.cpp b/x11/ipc/server/ocopserver.cpp
new file mode 100644
index 0000000..3df574b
--- a/dev/null
+++ b/x11/ipc/server/ocopserver.cpp
@@ -0,0 +1,383 @@
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <qcstring.h>
+#include <qtimer.h>
+
+#include "ocopserver.h"
+
+OCopServer::OCopServer()
+    : QObject()
+{
+    setName( "ocopserver");
+
+    /*
+     * init the server
+     */
+    init();
+    initSocket();
+}
+OCopServer::~OCopServer() {
+// socket notifiers should be deleted
+    close(m_serverfd );
+}
+void OCopServer::init() {
+    /*
+     * we set SIGPIPE to SIG_IGN
+     * to get EPIPE on reads ;)
+     */
+    qWarning("SIGPIPE to be ignored");
+    signal(SIGPIPE,  SIG_IGN );
+
+    /*
+     * initialize some variables
+     */
+    m_server = 0l;
+    m_serverError = 0l;
+}
+
+/**
+ * here we will init our server
+ * socket and bind and do the listen
+ */
+void OCopServer::initSocket() {
+    /* get the home dir */
+    QCString home( getenv("HOME") );
+    QCString path( home + "/.opie.cop");
+
+    if ( ( m_serverfd = socket( PF_UNIX, SOCK_STREAM, 0 ) ) == -1 ) {
+        qWarning("failed to create server socket");
+        /* try again later */
+        QTimer::singleShot( 400, this, SLOT(initSocket() ) );
+        return;
+    }
+    qWarning( "unlinking file %s", path.data() );
+
+    /* unlink previous sockets */
+    unlink( path.data() );
+
+    struct sockaddr_un m_address;
+    memset(&m_address, 0, sizeof(m_address ) );
+    m_address.sun_family = AF_UNIX; /* unix domain socket */
+    strcpy(m_address.sun_path, path.data() );
+    m_adrlaenge = sizeof(m_address.sun_family) + strlen(m_address.sun_path );
+
+    /* cast to make it a (sockadr*) */
+    if (bind(m_serverfd,  (struct sockaddr*)&m_address, m_adrlaenge ) == -1 ) {
+        qWarning("Server could not bind try again");
+        close(m_serverfd);
+        QTimer::singleShot(400, this, SLOT(initSocket() ) );
+        return;
+    }
+
+    /* tell the kernel that we're listening and accepting
+     * 5 pending connections */
+    if (listen(m_serverfd, 5) == -1 ) {
+        qWarning("could not listen");
+        close(m_serverfd );
+        QTimer::singleShot(400, this, SLOT(initSocket() ) );
+        return;
+    }
+
+    /*
+     * now we will create two QSocketNotifier
+     * which will us notify on reads
+     * and errors
+     * we do this because they integrate
+     * nicely into the QApplication eventloop
+     */
+    m_server = new QSocketNotifier(m_serverfd, QSocketNotifier::Read, this );
+    connect( m_server, SIGNAL(activated(int) ),
+             this, SLOT(newOnServer() ) );
+
+    m_serverError = new QSocketNotifier( m_serverfd, QSocketNotifier::Exception, this);
+    connect(m_serverError, SIGNAL(activated(int) ),
+            this, SLOT(errorOnServer() ) );
+
+    qWarning("done with registering");
+}
+/**
+ * we got the possibility to read
+ * on the server
+ * this is mostly due a connect
+ * on a client side
+ * we will accept it
+ * add it to our list
+ */
+void OCopServer::newOnServer() {
+    int fd = accept();
+    if ( fd < 0 )
+        return;
+
+    /*
+     * we got a successfull new connection
+     * be happy
+     * set SocketNotifier
+     * connect it
+     * and a OCOPClient
+     */
+    qWarning("Heureka new connection %d", fd );
+
+
+    registerClient( fd );
+}
+int OCopServer::accept() {
+    /*
+     * accept it
+     * the socket is currently blocking IIRC
+     */
+    return ::accept( m_serverfd,  (struct sockaddr*)&m_address, &m_adrlaenge );
+}
+void OCopServer::newOnClient( int fd ) {
+    int bug[4096];
+    //qWarning("new stuff for client on fd %d", fd );
+    errno = 0;
+    OCOPHead head;
+    memset(&head, 0, sizeof(head) );
+    int rea = ::read(fd, &head, sizeof(head) );
+    //qWarning("read %d %d", rea,  errno);
+    /*
+     * I should get EPIPE but nothing like this happens
+     * so if rea == 0 and we were signaled by the notifier
+     * we close it and drop the clients...
+     */
+    if ( rea <= 0 ) {
+        deregisterClient( fd );
+        return;
+    }
+    /*
+     * OCOPHead
+     */
+    qWarning("data %s %d", bug, rea );
+
+    /*
+     * Check the magic
+     * if chcked read till EOF if magic does not match
+     * otherwise do read
+     *  channel
+     * func
+     * data into mem
+     * and then send the OCOPPacket
+     *
+     */
+    if (head.magic == 47 ) {
+        qWarning("magic match");
+        QCString channel( head.chlen+1 );
+        QCString func( head.funclen+1 );
+        QByteArray data ( head.datalen );
+
+        /*
+         * we do not check for errors
+         */
+        int s = read(fd, channel.data(), head.chlen );
+        s = read(fd, func.data(), head.funclen );
+        s = read(fd, data.data(), head.datalen );
+
+        /* debug output */
+        qWarning("channel %s %d", channel.data(), head.chlen );
+        qWarning("func %s %d", func.data(), head.funclen );
+        /* debug end */
+
+        /*
+         * now that we got the complete body
+         * we need to make a package
+         * and then we need to send it to clients
+         * making a package is done here
+         * dispatching it not
+         */
+        OCOPPacket packet( head.type, channel, func, data );
+        dispatch( packet, fd );
+
+    }else{
+        qWarning("magic does not match");
+        qWarning("magic %d", head.magic );
+    }
+}
+void OCopServer::registerClient( int fd ) {
+    if (m_clients.contains(fd) )
+        return;
+
+    QSocketNotifier* notify = new QSocketNotifier(fd, QSocketNotifier::Read, this );
+    connect(notify, SIGNAL(activated(int) ),
+            this, SLOT(newOnClient(int) ) );
+    OCOPClient client;
+    client.fd = fd;
+    client.notify = notify;
+    m_clients.insert( client.fd, client );
+    qWarning("clients are up to %d", m_clients.count() );
+};
+void OCopServer::deregisterClient(int fd ) {
+    QMap<int, OCOPClient>::Iterator it = m_clients.find( fd );
+    if (it != m_clients.end() ) {
+        OCOPClient client = (*it);
+        delete client.notify;
+        m_clients.remove(fd );
+        close(fd );
+        /*
+         * TIME_ME
+         *
+         * now delete from all channels
+         * go through all channels
+         * remove the fd from the list
+         * if count becomes 0 remove the channel
+         * otherwise replace QArray<int>
+         */
+        QMap<QCString, QValueList<int> >::Iterator it;
+        for ( it = m_channels.begin(); it != m_channels.end(); ++it ) {
+            /*
+             * The channel contains this fd
+             */
+            if ( it.data().contains( fd ) ) {
+                QValueList<int> array = it.data();
+
+                /*
+                 * remove channel or just replace
+                 */
+                if ( array.count() == 1 ) {
+                    /* is the list now invalidatet? */
+                    m_channels.remove( it );
+                }else{
+                    array.remove( fd );
+                    it = m_channels.replace( it.key(), array );
+                }
+            }
+        } // off all channels
+    }
+    qWarning("clients are now at %d", m_clients.count() );
+};
+/**
+ * this function will evaluate
+ * the package and then do the appropriate thins
+ */
+void OCopServer::dispatch( const OCOPPacket& packet, int sourceFD ) {
+    qWarning("packet.type() == %d", packet.type() );
+    switch( packet.type() ) {
+    case OCOPPacket::Register:
+        registerClient(sourceFD );
+        break;
+    case OCOPPacket::Unregister:
+        deregisterClient(sourceFD );
+        break;
+    case OCOPPacket::Call:
+        call( packet, sourceFD );
+        break;
+        /* not implemented */
+    case OCOPPacket::Method:
+        break;
+        /* nit implemented */
+    case OCOPPacket::Reply:
+        break;
+    case OCOPPacket::RegisterChannel:
+        addChannel( packet.channel() , sourceFD );
+        break;
+    case OCOPPacket::UnregisterChannel:
+        delChannel( packet.channel(), sourceFD );
+        break;
+        /* not implemented */
+    case OCOPPacket::Return:
+        break;
+        /* not implemented :( */
+    case OCOPPacket::Signal:
+        break;
+    case OCOPPacket::IsRegistered:
+        isRegistered( packet.channel(), sourceFD );
+        break;
+    };
+}
+void OCopServer::errorOnServer() {
+    /*
+     * something is wrong on the server socket?
+     * what should we do?
+     * FIXME
+     */
+}
+QStringList OCopServer::channels() {
+    QStringList list;
+    {
+        QMap<QCString, QValueList<int> >::Iterator it;
+        for (it = m_channels.begin(); it != m_channels.end(); ++it ) {
+            list << it.key();
+        };
+    }
+    return list;
+}
+bool OCopServer::isChannelRegistered( const QCString& chan ) const{
+    return m_channels.contains( chan );
+}
+void OCopServer::addChannel( const QCString& channel,
+                             int fd ) {
+    QMap<QCString, QValueList<int> >::Iterator it;
+    it = m_channels.find( channel );
+
+    /* could be empty */
+    QValueList<int> list = it.data();
+    list.append( fd );
+    it = m_channels.replace( channel, list );
+};
+void OCopServer::delChannel( const QCString& channel,
+                             int fd ) {
+    if (!m_channels.contains( channel ) )
+        return;
+
+    QMap<QCString, QValueList<int> >::Iterator it;
+    it = m_channels.find( channel );
+
+    if ( it.data().contains(fd) ) {
+
+        QValueList<int> ints = it.data();
+        if ( ints.count() == 1  )
+            m_channels.remove( it );
+        else{
+            QValueList<int> ints = it.data();
+            ints.remove( fd );
+            m_channels.replace( it.key(), ints );
+        }
+    }
+}
+void OCopServer::isRegistered( const QCString& channel, int fd) {
+    OCOPHead head;
+    QCString func(2);
+
+    memset(&head, 0, sizeof(head ) );
+    head.magic = 47;
+    head.type = OCOPPacket::IsRegistered;
+    head.chlen = channel.size();
+    head.funclen = func.size();
+    head.datalen = 0;
+
+    if ( isChannelRegistered( channel ) ) {
+        //is registered
+        func[0] = 1;
+    }else{
+        func[0] = 0;
+    }
+
+    /**
+     * write the head
+     * and then channel
+     * success/failure inside func
+     */
+    write(fd, &head, sizeof(head) );
+    write(fd, channel.data(), channel.size() );
+    write(fd, func.data(), func.size() );
+}
+QValueList<int> OCopServer::clients( const QCString& channel ) {
+    return m_channels[channel];
+}
+void OCopServer::call( const OCOPPacket& p, int fd ) {
+    QValueList<int> cli = clients( p.channel() );
+    QValueList<int>::Iterator it;
+
+    OCOPHead head = p.head();
+    for (it = cli.begin(); it != cli.end(); ++it ) {
+        write( (*it), &head, sizeof(head ) );
+        write( (*it), p.channel().data(), p.channel().size() );
+        write( (*it), p.header().data(), p.header().size() );
+        write( (*it), p.content().data(), p.content().size() );
+    };
+}