socketprotocol.c

用于移动设备上的java虚拟机源代码

	    connectionHandle =
		prim_com_sun_midp_io_j2me_serversocket_Protocol_accept(handle);
	
	    NDEBUG1("serversocket::accept connection handle=%d\n", connectionHandle);
	}
    }

    if (connectionHandle < 0) {
        NDEBUG1("serversocket::accept error=%d\n", netError());

        if (connectionHandle != IO_WOULDBLOCK) {
            KNI_ThrowNew("java/io/IOException", "");
        }
    }
    KNI_ReturnInt((jint)connectionHandle);
}

/*=========================================================================
 * FUNCTION:      close0()
 * CLASS:         com.sun.midp.io.j2me.serversocket.Protocol
 * TYPE:          virtual native function
 * OVERVIEW:      Close a listening TCP socket
 * INTERFACE (operand stack manipulation):
 *   parameters:  this
 *   returns:     none
 *=======================================================================*/

KNIEXPORT KNI_RETURNTYPE_VOID
Java_com_sun_midp_io_j2me_serversocket_Socket_close0()
{
    int handle = getServerSocketHandle();

    /* Ensure we don't accidentally close the handle more than once */
    setServerSocketHandle(INVALID_HANDLE);
    
    NDEBUG1("serversocket::close handle=%d\n", handle);
    if (pushcheckin(handle) == -1){
	if (handle != INVALID_HANDLE ) {
	    if (prim_com_sun_midp_io_j2me_serversocket_Protocol_close(handle) < 0) {
		NDEBUG1("serversocket::close error=%d\n", netError());
		KNI_ThrowNew("java/io/IOException", "");
	    }
	}
    }

    KNI_ReturnVoid();
}


static void
serversocketCleanup(jobject serversocket)
{
    int handle;

    KNI_StartHandles(1);
    KNI_DeclareHandle(clazz);

    KNI_GetObjectClass(serversocket, clazz);
    /* We need to call KNI_GetFieldID(); serverSocketHandleFieldID may not
     * have been set before we cleanup.
     */
    handle = KNI_GetIntField(serversocket, 
                             KNI_GetFieldID(clazz, "handle", "I"));
    if ((handle != INVALID_HANDLE) && (pushcheckin(handle) == -1)) {
        prim_com_sun_midp_io_j2me_serversocket_Protocol_close(handle);
        /* Ensure we don't accidentally close the handle more than once */
        KNI_SetIntField(serversocket, 
                        KNI_GetFieldID(clazz, "handle", "I"), INVALID_HANDLE);
    }

    KNI_EndHandles();
}

/*=========================================================================
 * FUNCTION:      registerCleanup
 * CLASS:         com.sun.midp.io.j2me.serversocket.Protocol
 * TYPE:          virtual native function
 * OVERVIEW:      Close a TCP socket
 * INTERFACE (operand stack manipulation):
 *   parameters:  this
 *   returns:     none
 *=======================================================================*/

KNIEXPORT KNI_RETURNTYPE_VOID
Java_com_sun_midp_io_j2me_serversocket_Socket_registerCleanup()
{
    KNI_StartHandles(1);
    KNI_DeclareHandle(instance);
    KNI_GetThisPointer(instance);

    KNI_registerCleanup(instance, serversocketCleanup);

    KNI_EndHandles();

    KNI_ReturnVoid();
}

/*=========================================================================
 * FUNCTION:      finalize
 * CLASS:         com.sun.midp.io.j2me.serversocket.Protocol
 * TYPE:          virtual native function
 * OVERVIEW:      Close a TCP socket
 * INTERFACE (operand stack manipulation):
 *   parameters:  this
 *   returns:     none
 *=======================================================================*/

KNIEXPORT KNI_RETURNTYPE_VOID
Java_com_sun_midp_io_j2me_serversocket_Socket_finalize()
{
    KNI_StartHandles(1);
    KNI_DeclareHandle(instance);
    KNI_GetThisPointer(instance);

    serversocketCleanup(instance);

    KNI_EndHandles();

    KNI_ReturnVoid();
}

/*=========================================================================
 * FUNCTION:      initalizeInternal();
 * CLASS:         com.sun.midp.io.NetworkConnectionBase()
 * TYPE:          virtual native function
 * OVERVIEW:      Initialize the network
 * INTERFACE (operand stack manipulation):
 *   parameters:  this
 *   returns:     none
 *
 * This is a static initializer in NetworkConnectionBase, the parent of
 * all ..../Protocol classes that access the network.
 *=======================================================================*/

KNIEXPORT KNI_RETURNTYPE_VOID
    Java_com_sun_midp_io_NetworkConnectionBase_initializeInternal()
{
    networkInit();
    KNI_ReturnVoid();
}
/*
 * Wrapper to the system gethostname functionality.
 * Make sure the network is properly initialized.
 * Complete the transaction by recording the system
 * host name in the property values.
 */
char *getLocalHostName() { 
    char host[MAX_HOST_LENGTH];

    networkInit();
    if (gethostname(host, MAX_HOST_LENGTH) == 0) {
	setSystemProp("microedition.hostname", host);
    }
    return getSystemProp("microedition.hostname");
}

/*=========================================================================
 * FUNCTION:      getHost0();
 * CLASS:         com.sun.midp.io.j2me.socket.Protocol
 * TYPE:          virtual native function
 * OVERVIEW:      Get the host address for the requested endpoint.
 * INTERFACE (operand stack manipulation):
 *   parameters:  this, local
 *   returns:     IP number as a formatted string
 *
 * This routine formats the IP address as a String for either the 
 * local or remote end point of the connection.
 *=======================================================================*/

KNIEXPORT KNI_RETURNTYPE_OBJECT 
Java_com_sun_midp_io_j2me_socket_Protocol_getHost0()
{
    long            local;
    long            fd = getSocketHandle();
    char *          value;

    KNI_StartHandles(1);
    KNI_DeclareHandle(result);
    local = (int)KNI_GetParameterAsBoolean(1);

    value = prim_com_sun_midp_io_j2me_socket_Protocol_getipnumber1(fd, local);

    if (value != NULL) {
	KNI_NewStringUTF(value, result);
    } else {
	KNI_ReleaseHandle(result);
    }

    KNI_EndHandlesAndReturnObject(result); 
}

/*=========================================================================
 * FUNCTION:      getPort0();
 * CLASS:         com.sun.midp.io.j2me.socket.Protocol
 * TYPE:          virtual native function
 * OVERVIEW:      Get the port number for the requested endpoint.
 * INTERFACE (operand stack manipulation):
 *   parameters:  this, local
 *   returns:     IP number as a formatted string
 *
 * This routine returns the port number for the local or remote 
 * end point for the current socket connection.
 *=======================================================================*/
KNIEXPORT KNI_RETURNTYPE_INT
Java_com_sun_midp_io_j2me_socket_Protocol_getPort0()
{
    long            local;
    long            fd = getSocketHandle();
    long            port;

    local = (int)KNI_GetParameterAsInt(1);
    port = prim_com_sun_midp_io_j2me_socket_Protocol_getport1(fd, local);

    KNI_ReturnInt((jint)port);
}

/*=========================================================================
 * FUNCTION:      getSocketOpt0();
 * CLASS:         com.sun.midp.io.j2me.socket.Protocol
 * TYPE:          virtual native function
 * OVERVIEW:      Get the requested socket option value.
 * INTERFACE (operand stack manipulation):
 *   parameters:  this, option
 *   returns:     int value of requested socket option
 *
 * This routine returns the requested socket option current value.
 *=======================================================================*/

KNIEXPORT KNI_RETURNTYPE_INT
Java_com_sun_midp_io_j2me_socket_Protocol_getSockOpt0()
{
    long            flag;
    long            fd = getSocketHandle();
    int             optval;

    flag = (int)KNI_GetParameterAsInt(1);
    if (prim_com_sun_midp_io_j2me_socket_Protocol_getsockopt0(fd, flag,
                                                              &optval) == -1) {
	KNI_ThrowNew("java/io/IOException", "");
    }

    KNI_ReturnInt((jint)optval);
}


/*=========================================================================
 * FUNCTION:      setSocketOpt0();
 * CLASS:         com.sun.midp.io.j2me.socket.Protocol
 * TYPE:          virtual native function
 * OVERVIEW:      set the requested socket option value.
 * INTERFACE (operand stack manipulation):
 *   parameters:  this, option, value
 *   returns:     int value of requested socket option
 *
 * This routine returns the requested socket option current value.
 *=======================================================================*/
KNIEXPORT KNI_RETURNTYPE_VOID
Java_com_sun_midp_io_j2me_socket_Protocol_setSockOpt0()
{
    long            option;
    long            value;
    long            fd = getSocketHandle();
    
    option = (int)KNI_GetParameterAsInt(1);
    value = (int)KNI_GetParameterAsInt(2);

    if (prim_com_sun_midp_io_j2me_socket_Protocol_setsockopt0(fd, option, value) == -1){
 	KNI_ThrowNew("java/io/IOException", "");
    }
    KNI_ReturnVoid();
}

/*=========================================================================
 * FUNCTION:      getLocalAddress0();
 * CLASS:         com.sun.midp.io.j2me.serversocket.Socket
 * TYPE:          virtual native function
 * OVERVIEW:      Get the host address for the local device.
 * INTERFACE (operand stack manipulation):
 *   parameters:  this
 *   returns:     IP number as a formatted string
 *=======================================================================*/

KNIEXPORT KNI_RETURNTYPE_OBJECT 
Java_com_sun_midp_io_j2me_serversocket_Socket_getLocalAddress0()
{
    char *          value;

    KNI_StartHandles(1);
    KNI_DeclareHandle(result);

    value = getLocalIPAddressAsString_md();

    if (value != NULL) {
	KNI_NewStringUTF(value, result);
    } else {
	KNI_ReleaseHandle(result);
    }
    if (getServerSocketHandle() == INVALID_HANDLE) {
	KNI_ThrowNew("java/io/IOException", "");
    }

    KNI_EndHandlesAndReturnObject(result); 
}

/*=========================================================================
 * FUNCTION:      getLocalPort0();
 * CLASS:         com.sun.midp.io.j2me.serversocket.Socket
 * TYPE:          virtual native function
 * OVERVIEW:      Get the port number for the requested endpoint.
 * INTERFACE (operand stack manipulation):
 *   parameters:  this
 *   returns:     IP number as a formatted string
 *
 * This routine returns the port number for the local
 * end point for the current socket connection.
 *=======================================================================*/
KNIEXPORT KNI_RETURNTYPE_INT
Java_com_sun_midp_io_j2me_serversocket_Socket_getLocalPort0()
{
    long            fd = getServerSocketHandle();
    long            port = -1;
    
    if (fd == -1) {
	KNI_ThrowNew("java/io/IOException", "");
    } else {
	port = prim_com_sun_midp_io_j2me_socket_Protocol_getport1(fd, 1);
    }

    KNI_ReturnInt((jint)port);
}