diff options
Diffstat (limited to 'jurt/com/sun/star/lib/uno/protocols/urp/urp.java')
| -rw-r--r-- | jurt/com/sun/star/lib/uno/protocols/urp/urp.java | 734 |
1 files changed, 734 insertions, 0 deletions
diff --git a/jurt/com/sun/star/lib/uno/protocols/urp/urp.java b/jurt/com/sun/star/lib/uno/protocols/urp/urp.java new file mode 100644 index 000000000000..da54bc7612a1 --- /dev/null +++ b/jurt/com/sun/star/lib/uno/protocols/urp/urp.java @@ -0,0 +1,734 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +package com.sun.star.lib.uno.protocols.urp; + +import com.sun.star.bridge.InvalidProtocolChangeException; +import com.sun.star.bridge.ProtocolProperty; +import com.sun.star.bridge.XProtocolProperties; +import com.sun.star.lib.uno.environments.remote.IProtocol; +import com.sun.star.lib.uno.environments.remote.Message; +import com.sun.star.lib.uno.environments.remote.ThreadId; +import com.sun.star.lib.uno.typedesc.MethodDescription; +import com.sun.star.lib.uno.typedesc.TypeDescription; +import com.sun.star.uno.Any; +import com.sun.star.uno.IBridge; +import com.sun.star.uno.IMethodDescription; +import com.sun.star.uno.ITypeDescription; +import com.sun.star.uno.Type; +import com.sun.star.uno.TypeClass; +import com.sun.star.uno.UnoRuntime; +import com.sun.star.uno.XCurrentContext; +import java.io.DataInput; +import java.io.DataInputStream; +import java.io.DataOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.lang.reflect.Array; +import java.util.ArrayList; +import java.util.Random; +import java.util.StringTokenizer; + +// This class internally relies on the availability of Java UNO type information +// for the interface type com.sun.star.bridge.XProtocolProperties, even though +// URP itself does not rely on that type. + +public final class urp implements IProtocol { + public urp( + IBridge bridge, String attributes, InputStream input, + OutputStream output) + { + this.input = new DataInputStream(input); + this.output = new DataOutputStream(output); + marshal = new Marshal(bridge, CACHE_SIZE); + unmarshal = new Unmarshal(bridge, CACHE_SIZE); + forceSynchronous = parseAttributes(attributes); + } + + // @see IProtocol#init + public void init() throws IOException { + synchronized (monitor) { + if (state == STATE_INITIAL0) { + sendRequestChange(); + } + } + } + + // @see IProtocol#readMessage + public Message readMessage() throws IOException { + for (;;) { + if (!unmarshal.hasMore()) { + unmarshal.reset(readBlock()); + if (!unmarshal.hasMore()) { + throw new IOException("closeConnection message received"); + } + } + UrpMessage msg; + int header = unmarshal.read8Bit(); + if ((header & HEADER_LONGHEADER) != 0) { + if ((header & HEADER_REQUEST) != 0) { + msg = readLongRequest(header); + } else { + msg = readReply(header); + } + } else { + msg = readShortRequest(header); + } + if (msg.isInternal()) { + handleInternalMessage(msg); + } else { + return msg; + } + } + } + + // @see IProtocol#writeRequest + public boolean writeRequest( + String oid, TypeDescription type, String function, ThreadId tid, + Object[] arguments) + throws IOException + { + if (oid.equals(PROPERTIES_OID)) { + throw new IllegalArgumentException("illegal OID " + oid); + } + synchronized (monitor) { + while (!initialized) { + try { + monitor.wait(); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + throw new RuntimeException(e.toString()); + } + } + return writeRequest(false, oid, type, function, tid, arguments); + } + } + + // @see IProtocol#writeReply + public void writeReply(boolean exception, ThreadId tid, Object result) + throws IOException + { + synchronized (output) { + writeQueuedReleases(); + int header = HEADER_LONGHEADER; + PendingRequests.Item pending = pendingIn.pop(tid); + TypeDescription resultType; + ITypeDescription[] argTypes; + Object[] args; + if (exception) { + header |= HEADER_EXCEPTION; + resultType = TypeDescription.getTypeDescription(TypeClass.ANY); + argTypes = null; + args = null; + } else { + resultType = (TypeDescription) + pending.function.getReturnSignature(); + argTypes = pending.function.getOutSignature(); + args = pending.arguments; + } + if (!tid.equals(outL1Tid)) { + header |= HEADER_NEWTID; + outL1Tid = tid; + } else { + tid = null; + } + marshal.write8Bit(header); + if (tid != null) { + marshal.writeThreadId(tid); + } + marshal.writeValue(resultType, result); + if (argTypes != null) { + for (int i = 0; i < argTypes.length; ++i) { + if (argTypes[i] != null) { + marshal.writeValue( + (TypeDescription) argTypes[i].getComponentType(), + Array.get(args[i], 0)); + } + } + } + writeBlock(true); + } + } + + private void sendRequestChange() throws IOException { + if (propertiesTid == null) { + propertiesTid = ThreadId.createFresh(); + } + random = new Random().nextInt(); + writeRequest( + true, PROPERTIES_OID, + TypeDescription.getTypeDescription(XProtocolProperties.class), + PROPERTIES_FUN_REQUEST_CHANGE, propertiesTid, + new Object[] { new Integer(random) }); + state = STATE_REQUESTED; + } + + private void handleInternalMessage(Message message) throws IOException { + if (message.isRequest()) { + String t = message.getType().getTypeName(); + if (!t.equals("com.sun.star.bridge.XProtocolProperties")) { + throw new IOException( + "read URP protocol properties request with unsupported" + + " type " + t); + } + int fid = message.getMethod().getIndex(); + switch (fid) { + case PROPERTIES_FID_REQUEST_CHANGE: + checkSynchronousPropertyRequest(message); + synchronized (monitor) { + switch (state) { + case STATE_INITIAL0: + case STATE_INITIAL: + writeReply( + false, message.getThreadId(), new Integer(1)); + state = STATE_WAIT; + break; + case STATE_REQUESTED: + int n + = ((Integer) message.getArguments()[0]).intValue(); + if (random < n) { + writeReply( + false, message.getThreadId(), new Integer(1)); + state = STATE_WAIT; + } else if (random == n) { + writeReply( + false, message.getThreadId(), new Integer(-1)); + state = STATE_INITIAL; + sendRequestChange(); + } else { + writeReply( + false, message.getThreadId(), new Integer(0)); + } + break; + default: + writeReply( + true, message.getThreadId(), + new com.sun.star.uno.RuntimeException( + "read URP protocol properties requestChange" + + " request in illegal state")); + break; + } + } + break; + case PROPERTIES_FID_COMMIT_CHANGE: + checkSynchronousPropertyRequest(message); + synchronized (monitor) { + if (state == STATE_WAIT) { + ProtocolProperty[] p = (ProtocolProperty[]) + message.getArguments()[0]; + boolean ok = true; + boolean cc = false; + int i = 0; + for (; i < p.length; ++i) { + if (p[i].Name.equals(PROPERTY_CURRENT_CONTEXT)) { + cc = true; + } else { + ok = false; + break; + } + } + if (ok) { + writeReply(false, message.getThreadId(), null); + } else { + writeReply( + true, message.getThreadId(), + new InvalidProtocolChangeException( + "", null, p[i], 1)); + } + state = STATE_INITIAL; + if (!initialized) { + if (cc) { + currentContext = true; + initialized = true; + monitor.notifyAll(); + } else { + sendRequestChange(); + } + } + } else { + writeReply( + true, message.getThreadId(), + new com.sun.star.uno.RuntimeException( + "read URP protocol properties commitChange" + + " request in illegal state")); + } + } + break; + default: + throw new IOException( + "read URP protocol properties request with unsupported" + + " function ID " + fid); + } + } else { + synchronized (monitor) { + if (state == STATE_COMMITTED) { + // commitChange reply: + if (!message.isAbnormalTermination()) { + currentContext = true; + } + state = STATE_INITIAL; + initialized = true; + monitor.notifyAll(); + } else { + // requestChange reply: + if (message.isAbnormalTermination()) { + // remote side probably does not support negotiation: + state = STATE_INITIAL; + initialized = true; + monitor.notifyAll(); + } else { + int n = ((Integer) message.getResult()).intValue(); + switch (n) { + case -1: + case 0: + break; + case 1: + writeRequest( + true, PROPERTIES_OID, + TypeDescription.getTypeDescription( + XProtocolProperties.class), + PROPERTIES_FUN_COMMIT_CHANGE, propertiesTid, + new Object[] { + new ProtocolProperty[] { + new ProtocolProperty( + PROPERTY_CURRENT_CONTEXT, + Any.VOID) } }); + state = STATE_COMMITTED; + break; + default: + throw new IOException( + "read URP protocol properties " + + PROPERTIES_FUN_REQUEST_CHANGE + + " reply with illegal return value " + n); + } + } + } + } + } + } + + private void checkSynchronousPropertyRequest(Message message) + throws IOException + { + if (!message.isSynchronous()) { + throw new IOException( + "read URP protocol properties request for synchronous function" + + " marked as not SYNCHRONOUS"); + } + } + + private byte[] readBlock() throws IOException { + int size = input.readInt(); + input.readInt(); // ignore count + byte[] bytes = new byte[size]; + input.readFully(bytes); + return bytes; + } + + private UrpMessage readLongRequest(int header) throws IOException { + boolean sync = false; + if ((header & HEADER_MOREFLAGS) != 0) { + if (unmarshal.read8Bit() != (HEADER_MUSTREPLY | HEADER_SYNCHRONOUS)) + { + throw new IOException( + "read URP request with bad MUSTREPLY/SYNCHRONOUS byte"); + } + sync = true; + } + int funId = (header & HEADER_FUNCTIONID16) != 0 + ? unmarshal.read16Bit() : unmarshal.read8Bit(); + if ((header & HEADER_NEWTYPE) != 0) { + inL1Type = unmarshal.readType(); + if (inL1Type.getTypeClass() != TypeClass.INTERFACE) { + throw new IOException( + "read URP request with non-interface type " + inL1Type); + } + } + if ((header & HEADER_NEWOID) != 0) { + inL1Oid = unmarshal.readObjectId(); + } + if ((header & HEADER_NEWTID) != 0) { + inL1Tid = unmarshal.readThreadId(); + } + //TODO: check HEADER_IGNORECACHE + return readRequest(funId, sync); + } + + private UrpMessage readShortRequest(int header) { + int funId = (header & HEADER_FUNCTIONID14) != 0 + ? ((header & HEADER_FUNCTIONID) << 8) | unmarshal.read8Bit() + : header & HEADER_FUNCTIONID; + return readRequest(funId, false); + } + + private UrpMessage readRequest(int functionId, boolean forcedSynchronous) { + boolean internal = PROPERTIES_OID.equals(inL1Oid); + // inL1Oid may be null in XInstanceProvider.getInstance("") + XCurrentContext cc = + (currentContext && !internal + && functionId != MethodDescription.ID_RELEASE) + ? (XCurrentContext) unmarshal.readInterface( + new Type(XCurrentContext.class)) + : null; + IMethodDescription desc = inL1Type.getMethodDescription(functionId); + ITypeDescription[] inSig = desc.getInSignature(); + ITypeDescription[] outSig = desc.getOutSignature(); + Object[] args = new Object[inSig.length]; + for (int i = 0; i < args.length; ++i) { + if (inSig[i] != null) { + if (outSig[i] != null) { + Object inout = Array.newInstance( + outSig[i].getComponentType().getZClass(), 1); + Array.set( + inout, 0, + unmarshal.readValue( + (TypeDescription) outSig[i].getComponentType())); + args[i] = inout; + } else { + args[i] = unmarshal.readValue((TypeDescription) inSig[i]); + } + } else { + args[i] = Array.newInstance( + outSig[i].getComponentType().getZClass(), 1); + } + } + boolean sync = forcedSynchronous || !desc.isOneway(); + if (sync) { + pendingIn.push( + inL1Tid, new PendingRequests.Item(internal, desc, args)); + } + return new UrpMessage( + inL1Tid, true, inL1Oid, inL1Type, desc, sync, cc, false, null, args, + internal); + } + + private UrpMessage readReply(int header) { + if ((header & HEADER_NEWTID) != 0) { + inL1Tid = unmarshal.readThreadId(); + } + PendingRequests.Item pending = pendingOut.pop(inL1Tid); + TypeDescription resultType; + ITypeDescription[] argTypes; + Object[] args; + boolean exception = (header & HEADER_EXCEPTION) != 0; + if (exception) { + resultType = TypeDescription.getTypeDescription(TypeClass.ANY); + argTypes = null; + args = null; + } else { + resultType = (TypeDescription) + pending.function.getReturnSignature(); + argTypes = pending.function.getOutSignature(); + args = pending.arguments; + } + Object result = resultType == null + ? null : unmarshal.readValue(resultType); + if (argTypes != null) { + for (int i = 0; i < argTypes.length; ++i) { + if (argTypes[i] != null) { + Array.set( + args[i], 0, + unmarshal.readValue( + (TypeDescription) argTypes[i].getComponentType())); + } + } + } + return new UrpMessage( + inL1Tid, false, null, null, null, false, null, exception, result, + args, pending.internal); + } + + private boolean writeRequest( + boolean internal, String oid, TypeDescription type, String function, + ThreadId tid, Object[] arguments) + throws IOException + { + IMethodDescription desc = type.getMethodDescription(function); + synchronized (output) { + if (desc.getIndex() == MethodDescription.ID_RELEASE + && releaseQueue.size() < MAX_RELEASE_QUEUE_SIZE) + { + releaseQueue.add( + new QueuedRelease(internal, oid, type, desc, tid)); + return false; + } else { + writeQueuedReleases(); + return writeRequest( + internal, oid, type, desc, tid, arguments, true); + } + } + } + + private boolean writeRequest( + boolean internal, String oid, TypeDescription type, + IMethodDescription desc, ThreadId tid, Object[] arguments, + boolean flush) + throws IOException + { + int funId = desc.getIndex(); + if (funId < 0 || funId > MAX_FUNCTIONID16) { + throw new IllegalArgumentException( + "function ID " + funId + " out of range"); + } + boolean forceSync = forceSynchronous + && funId != MethodDescription.ID_RELEASE; + boolean moreFlags = forceSync && desc.isOneway(); + boolean longHeader = moreFlags; + int header = 0; + if (!type.equals(outL1Type)) { + longHeader = true; + header |= HEADER_NEWTYPE; + outL1Type = type; + } else { + type = null; + } + if (!oid.equals(outL1Oid)) { + longHeader = true; + header |= HEADER_NEWOID; + outL1Oid = oid; + } else { + oid = null; + } + if (!tid.equals(outL1Tid)) { + longHeader = true; + header |= HEADER_NEWTID; + outL1Tid = tid; + } else { + tid = null; + } + if (funId > MAX_FUNCTIONID14) { + longHeader = true; + } + if (longHeader) { + header |= HEADER_LONGHEADER | HEADER_REQUEST; + if (funId > MAX_FUNCTIONID8) { + header |= HEADER_FUNCTIONID16; + } + if (moreFlags) { + header |= HEADER_MOREFLAGS; + } + marshal.write8Bit(header); + if (moreFlags) { + marshal.write8Bit(HEADER_MUSTREPLY | HEADER_SYNCHRONOUS); + } + if (funId > MAX_FUNCTIONID8) { + marshal.write16Bit(funId); + } else { + marshal.write8Bit(funId); + } + if (type != null) { + marshal.writeType(type); + } + if (oid != null) { + marshal.writeObjectId(oid); + } + if (tid != null) { + marshal.writeThreadId(tid); + } + } else { + if (funId > HEADER_FUNCTIONID) { + marshal.write8Bit(HEADER_FUNCTIONID14 | (funId >> 8)); + } + marshal.write8Bit(funId); + } + if (currentContext && !internal + && funId != MethodDescription.ID_RELEASE) + { + marshal.writeInterface( + UnoRuntime.getCurrentContext(), + new Type(XCurrentContext.class)); + } + ITypeDescription[] inSig = desc.getInSignature(); + ITypeDescription[] outSig = desc.getOutSignature(); + for (int i = 0; i < inSig.length; ++i) { + if (inSig[i] != null) { + if (outSig[i] != null) { + marshal.writeValue( + (TypeDescription) outSig[i].getComponentType(), + ((Object[]) arguments[i])[0]); + } else { + marshal.writeValue( + (TypeDescription) inSig[i], arguments[i]); + } + } + } + boolean sync = forceSync || !desc.isOneway(); + if (sync) { + pendingOut.push( + outL1Tid, new PendingRequests.Item(internal, desc, arguments)); + } + writeBlock(flush); + return sync; + } + + private void writeBlock(boolean flush) throws IOException { + byte[] data = marshal.reset(); + output.writeInt(data.length); + output.writeInt(1); + output.write(data); + if (flush) { + output.flush(); + } + } + + private void writeQueuedReleases() throws IOException { + for (int i = releaseQueue.size(); i > 0;) { + --i; + QueuedRelease r = (QueuedRelease) releaseQueue.get(i); + writeRequest( + r.internal, r.objectId, r.type, r.method, r.threadId, null, + false); + releaseQueue.remove(i); + } + } + + private static boolean parseAttributes(String attributes) { + boolean forceSynchronous = true; + if (attributes != null) { + StringTokenizer t = new StringTokenizer(attributes, ","); + while (t.hasMoreTokens()) { + String a = t.nextToken(); + String v = null; + int i = a.indexOf('='); + if (i >= 0) { + v = a.substring(i + 1); + a = a.substring(0, i); + } + if (a.equalsIgnoreCase("ForceSynchronous")) { + forceSynchronous = parseBooleanAttributeValue(a, v); + } else if (a.equalsIgnoreCase("negotiate")) { + // Ignored: + parseBooleanAttributeValue(a, v); + } else { + throw new IllegalArgumentException( + "unknown protocol attribute " + a); + } + } + } + return forceSynchronous; + } + + private static boolean parseBooleanAttributeValue( + String attribute, String value) + { + if (value == null) { + throw new IllegalArgumentException( + "missing value for protocol attribute " + attribute); + } + if (value.equals("0")) { + return false; + } else if (value.equals("1")) { + return true; + } else { + throw new IllegalArgumentException( + "bad value " + value + " for protocol attribute " + attribute); + } + } + + private static final class QueuedRelease { + public QueuedRelease( + boolean internal, String objectId, TypeDescription type, + IMethodDescription method, ThreadId threadId) + { + this.internal = internal; + this.objectId = objectId; + this.type = type; + this.method = method; + this.threadId = threadId; + } + + public final boolean internal; + public final String objectId; + public final TypeDescription type; + public final IMethodDescription method; + public final ThreadId threadId; + } + + private static final String PROPERTIES_OID = "UrpProtocolProperties"; + private static final int PROPERTIES_FID_REQUEST_CHANGE = 4; + private static final String PROPERTIES_FUN_REQUEST_CHANGE = "requestChange"; + private static final int PROPERTIES_FID_COMMIT_CHANGE = 5; + private static final String PROPERTIES_FUN_COMMIT_CHANGE = "commitChange"; + private static final String PROPERTY_CURRENT_CONTEXT = "CurrentContext"; + + private static final short CACHE_SIZE = 256; + + private static final int HEADER_LONGHEADER = 0x80; + private static final int HEADER_REQUEST = 0x40; + private static final int HEADER_NEWTYPE = 0x20; + private static final int HEADER_NEWOID = 0x10; + private static final int HEADER_NEWTID = 0x08; + private static final int HEADER_FUNCTIONID16 = 0x04; + private static final int HEADER_IGNORECACHE = 0x02; + private static final int HEADER_MOREFLAGS = 0x01; + private static final int HEADER_MUSTREPLY = 0x80; + private static final int HEADER_SYNCHRONOUS = 0x40; + private static final int HEADER_FUNCTIONID14 = 0x40; + private static final int HEADER_FUNCTIONID = 0x3F; + private static final int HEADER_EXCEPTION = 0x20; + + private static final int MAX_FUNCTIONID16 = 0xFFFF; + private static final int MAX_FUNCTIONID14 = 0x3FFF; + private static final int MAX_FUNCTIONID8 = 0xFF; + + private static final int STATE_INITIAL0 = 0; + private static final int STATE_INITIAL = 1; + private static final int STATE_REQUESTED = 2; + private static final int STATE_COMMITTED = 3; + private static final int STATE_WAIT = 4; + + private static final int MAX_RELEASE_QUEUE_SIZE = 100; + + private final DataInput input; + private final DataOutputStream output; + + private final Marshal marshal; + private final Unmarshal unmarshal; + + private final boolean forceSynchronous; + + private final PendingRequests pendingIn = new PendingRequests(); + private final PendingRequests pendingOut = new PendingRequests(); + + private final Object monitor = new Object(); + private int state = STATE_INITIAL0; + private boolean initialized = false; + private ThreadId propertiesTid = null; + private int random; + private boolean currentContext = false; + + private ThreadId inL1Tid = null; + private String inL1Oid = null; + private TypeDescription inL1Type = null; + + private ThreadId outL1Tid = null; + private String outL1Oid = null; + private ITypeDescription outL1Type = null; + + private final ArrayList releaseQueue = new ArrayList(); // of QueuedRelease +} |