498 lines
18 KiB
C++
498 lines
18 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "sal/config.h"
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#include <cassert>
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#include <exception>
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#include <memory>
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#include <vector>
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#include "boost/scoped_ptr.hpp"
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#include "com/sun/star/connection/XConnection.hpp"
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#include "com/sun/star/io/IOException.hpp"
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#include "com/sun/star/uno/Any.hxx"
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#include "com/sun/star/uno/Exception.hpp"
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#include "com/sun/star/uno/Reference.hxx"
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#include "com/sun/star/uno/RuntimeException.hpp"
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#include "com/sun/star/uno/Sequence.hxx"
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#include "com/sun/star/uno/Type.hxx"
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#include "com/sun/star/uno/XCurrentContext.hpp"
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#include "com/sun/star/uno/XInterface.hpp"
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#include "cppu/unotype.hxx"
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#include "rtl/byteseq.h"
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#include "rtl/ustring.hxx"
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#include "sal/types.h"
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#include "typelib/typeclass.h"
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#include "typelib/typedescription.h"
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#include "typelib/typedescription.hxx"
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#include "binaryany.hxx"
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#include "bridge.hxx"
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#include "incomingreply.hxx"
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#include "incomingrequest.hxx"
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#include "outgoingrequest.hxx"
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#include "reader.hxx"
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#include "specialfunctionids.hxx"
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#include "unmarshal.hxx"
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namespace binaryurp {
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namespace {
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css::uno::Sequence< sal_Int8 > read(
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css::uno::Reference< css::connection::XConnection > const & connection,
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sal_uInt32 size, bool eofOk)
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{
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assert(connection.is());
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if (size > SAL_MAX_INT32) {
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throw css::uno::RuntimeException(
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"binaryurp::Reader: block size too large",
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css::uno::Reference< css::uno::XInterface >());
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}
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css::uno::Sequence< sal_Int8 > buf;
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sal_Int32 n = connection->read(buf, static_cast< sal_Int32 >(size));
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if (n == 0 && eofOk) {
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return css::uno::Sequence< sal_Int8 >();
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}
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if (n != static_cast< sal_Int32 >(size)) {
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throw css::io::IOException(
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"binaryurp::Reader: premature end of input",
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css::uno::Reference< css::uno::XInterface >());
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}
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assert(buf.getLength() == static_cast< sal_Int32 >(size));
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return buf;
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}
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extern "C" void SAL_CALL request(void * pThreadSpecificData) {
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assert(pThreadSpecificData != 0);
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boost::scoped_ptr< IncomingRequest >(
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static_cast< IncomingRequest * >(pThreadSpecificData))->
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execute();
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}
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}
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Reader::Reader(rtl::Reference< Bridge > const & bridge):
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Thread("binaryurpReader"), bridge_(bridge)
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{
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assert(bridge.is());
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}
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Reader::~Reader() {}
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void Reader::execute() {
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try {
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bridge_->sendRequestChangeRequest();
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css::uno::Reference< css::connection::XConnection > con(
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bridge_->getConnection());
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for (;;) {
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css::uno::Sequence< sal_Int8 > s(read(con, 8, true));
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if (s.getLength() == 0) {
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break;
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}
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Unmarshal header(bridge_, state_, s);
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sal_uInt32 size = header.read32();
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sal_uInt32 count = header.read32();
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header.done();
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if (count == 0) {
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throw css::io::IOException(
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"binaryurp::Reader: block with zero message count received",
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css::uno::Reference< css::uno::XInterface >());
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}
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Unmarshal block(bridge_, state_, read(con, size, false));
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for (sal_uInt32 i = 0; i != count; ++i) {
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readMessage(block);
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}
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block.done();
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}
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} catch (const css::uno::Exception & e) {
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SAL_WARN("binaryurp", "caught UNO exception '" << e.Message << '\'');
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} catch (const std::exception & e) {
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SAL_WARN("binaryurp", "caught C++ exception '" << e.what() << '\'');
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}
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bridge_->terminate(false);
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}
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void Reader::readMessage(Unmarshal & unmarshal) {
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sal_uInt8 flags1 = unmarshal.read8();
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bool newType;
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bool newOid;
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bool newTid;
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bool forceSynchronous;
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sal_uInt16 functionId;
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if ((flags1 & 0x80) != 0) { // bit 7: LONGHEADER
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if ((flags1 & 0x40) == 0) { // bit 6: REQUEST
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readReplyMessage(unmarshal, flags1);
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return;
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}
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newType = (flags1 & 0x20) != 0; // bit 5: NEWTYPE
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newOid = (flags1 & 0x10) != 0; // bit 4: NEWOID
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newTid = (flags1 & 0x08) != 0; // bit 3: NEWTID
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if ((flags1 & 0x01) != 0) { // bit 0: MOREFLAGSS
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sal_uInt8 flags2 = unmarshal.read8();
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forceSynchronous = (flags2 & 0x80) != 0; // bit 7: MUSTREPLY
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if (((flags2 & 0x40) != 0) != forceSynchronous) {
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// bit 6: SYNCHRONOUS
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throw css::uno::RuntimeException(
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("URP: request message with MUSTREPLY != SYNCHRONOUS"
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" received"),
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css::uno::Reference< css::uno::XInterface >());
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}
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} else {
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forceSynchronous = false;
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}
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functionId = ((flags1 & 0x04) != 0) // bit 2: FUNCTIONID16
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? unmarshal.read16() : unmarshal.read8();
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} else {
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newType = false;
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newOid = false;
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newTid = false;
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forceSynchronous = false;
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functionId = ((flags1 & 0x40) != 0) // bit 6: FUNCTIONID14
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? ((flags1 & 0x3F) << 8) | unmarshal.read8() : flags1 & 0x3F;
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}
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css::uno::TypeDescription type;
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if (newType) {
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type = unmarshal.readType();
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lastType_ = type;
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} else {
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if (!lastType_.is()) {
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throw css::uno::RuntimeException(
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("URP: request message with NEWTYPE received when last"
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" interface type has not yet been set"),
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css::uno::Reference< css::uno::XInterface >());
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}
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type = lastType_;
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}
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OUString oid;
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if (newOid) {
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oid = unmarshal.readOid();
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if (oid.isEmpty()) {
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throw css::io::IOException(
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"binaryurp::Unmarshal: emtpy OID",
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css::uno::Reference< css::uno::XInterface >());
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}
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lastOid_ = oid;
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} else {
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if (lastOid_.isEmpty()) {
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throw css::uno::RuntimeException(
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("URP: request message with NEWOID received when last OID has"
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" not yet been set"),
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css::uno::Reference< css::uno::XInterface >());
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}
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oid = lastOid_;
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}
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rtl::ByteSequence tid(getTid(unmarshal, newTid));
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lastTid_ = tid;
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type.makeComplete();
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if (type.get()->eTypeClass != typelib_TypeClass_INTERFACE) {
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throw css::uno::RuntimeException(
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"URP: request message with non-interface interface type received",
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css::uno::Reference< css::uno::XInterface >());
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}
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typelib_InterfaceTypeDescription * itd =
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reinterpret_cast< typelib_InterfaceTypeDescription * >(type.get());
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if (functionId >= itd->nMapFunctionIndexToMemberIndex) {
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throw css::uno::RuntimeException(
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"URP: request message with unknown function ID received",
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css::uno::Reference< css::uno::XInterface >());
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}
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sal_Int32 memberId = itd->pMapFunctionIndexToMemberIndex[functionId];
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css::uno::TypeDescription memberTd(itd->ppAllMembers[memberId]);
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memberTd.makeComplete();
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assert(memberTd.is());
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bool protProps = bridge_->isProtocolPropertiesRequest(oid, type);
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bool ccMode = !protProps && functionId != SPECIAL_FUNCTION_ID_RELEASE &&
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bridge_->isCurrentContextMode();
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css::uno::UnoInterfaceReference cc;
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if (ccMode) {
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css::uno::TypeDescription t(
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cppu::UnoType< css::uno::Reference< css::uno::XCurrentContext > >::
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get());
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cc.set(
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*static_cast< uno_Interface ** >(
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unmarshal.readValue(t).getValue(t)));
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}
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bool oneWay =
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memberTd.get()->eTypeClass == typelib_TypeClass_INTERFACE_METHOD &&
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(reinterpret_cast< typelib_InterfaceMethodTypeDescription * >(
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memberTd.get())->
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bOneWay);
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SAL_INFO_IF(
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!oneWay && forceSynchronous, "binaryurp",
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("superfluous MUSTREPLY/SYNCHRONOUS ignored in request message with"
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" non-oneway function ID"));
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bool synchronous = !oneWay || forceSynchronous;
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bool setter = false;
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std::vector< BinaryAny > inArgs;
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switch (memberTd.get()->eTypeClass) {
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case typelib_TypeClass_INTERFACE_ATTRIBUTE:
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setter = itd->pMapMemberIndexToFunctionIndex[memberId] != functionId;
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// pMapMemberIndexToFunctionIndex contains function index of
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// attribute getter
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if (setter) {
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inArgs.push_back(
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unmarshal.readValue(
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css::uno::TypeDescription(
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reinterpret_cast<
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typelib_InterfaceAttributeTypeDescription * >(
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memberTd.get())->
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pAttributeTypeRef)));
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}
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break;
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case typelib_TypeClass_INTERFACE_METHOD:
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{
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typelib_InterfaceMethodTypeDescription * mtd =
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reinterpret_cast< typelib_InterfaceMethodTypeDescription * >(
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memberTd.get());
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for (sal_Int32 i = 0; i != mtd->nParams; ++i) {
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if (mtd->pParams[i].bIn) {
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inArgs.push_back(
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unmarshal.readValue(
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css::uno::TypeDescription(
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mtd->pParams[i].pTypeRef)));
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}
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}
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break;
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}
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default:
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assert(false); // this cannot happen
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break;
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}
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bridge_->incrementCalls(
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!protProps && functionId != SPECIAL_FUNCTION_ID_RELEASE);
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if (protProps) {
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switch (functionId) {
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case SPECIAL_FUNCTION_ID_REQUEST_CHANGE:
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bridge_->handleRequestChangeRequest(tid, inArgs);
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break;
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case SPECIAL_FUNCTION_ID_COMMIT_CHANGE:
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bridge_->handleCommitChangeRequest(tid, inArgs);
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break;
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default:
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throw css::uno::RuntimeException(
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("URP: request message with UrpProtocolProperties OID and"
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" unknown function ID received"),
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css::uno::Reference< css::uno::XInterface >());
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}
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} else {
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css::uno::UnoInterfaceReference obj;
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switch (functionId) {
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case SPECIAL_FUNCTION_ID_QUERY_INTERFACE:
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obj = bridge_->findStub(oid, type);
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if (!obj.is()) {
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assert(
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inArgs.size() == 1
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&& inArgs[0].getType().equals(
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css::uno::TypeDescription(
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cppu::UnoType< css::uno::Type >::get())));
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if (!(type.equals(
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css::uno::TypeDescription(
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cppu::UnoType<
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css::uno::Reference<
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css::uno::XInterface > >::get()))
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&& (css::uno::TypeDescription(
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*static_cast<
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typelib_TypeDescriptionReference ** >(
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inArgs[0].getValue(inArgs[0].getType()))).
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equals(
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css::uno::TypeDescription(
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cppu::UnoType<
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css::uno::Reference<
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css::uno::XInterface > >::get())))))
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{
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throw css::uno::RuntimeException(
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("URP: queryInterface request message with unknown OID"
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" received"),
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css::uno::Reference< css::uno::XInterface >());
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}
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}
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break;
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case SPECIAL_FUNCTION_ID_RESERVED:
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throw css::uno::RuntimeException(
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"URP: request message with unknown function ID 1 received",
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css::uno::Reference< css::uno::XInterface >());
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case SPECIAL_FUNCTION_ID_RELEASE:
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break;
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default:
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obj = bridge_->findStub(oid, type);
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if (!obj.is()) {
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throw css::uno::RuntimeException(
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"URP: request message with unknown OID received",
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css::uno::Reference< css::uno::XInterface >());
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}
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break;
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}
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SAL_WNODEPRECATED_DECLARATIONS_PUSH
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std::auto_ptr< IncomingRequest > req(
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new IncomingRequest(
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bridge_, tid, oid, obj, type, functionId, synchronous, memberTd,
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setter, inArgs, ccMode, cc));
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SAL_WNODEPRECATED_DECLARATIONS_POP
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if (synchronous) {
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bridge_->incrementActiveCalls();
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}
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uno_threadpool_putJob(
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bridge_->getThreadPool(), tid.getHandle(), req.get(), &request,
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!synchronous);
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req.release();
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}
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}
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void Reader::readReplyMessage(Unmarshal & unmarshal, sal_uInt8 flags1) {
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rtl::ByteSequence tid(getTid(unmarshal, (flags1 & 0x08) != 0));
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// bit 3: NEWTID
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lastTid_ = tid;
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OutgoingRequest req(bridge_->lastOutgoingRequest(tid));
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bool exc = (flags1 & 0x20) != 0; // bit 5: EXCEPTION
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BinaryAny ret;
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std::vector< BinaryAny > outArgs;
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if (exc) {
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ret = unmarshal.readValue(
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css::uno::TypeDescription(cppu::UnoType< css::uno::Any >::get()));
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if (!typelib_typedescription_isAssignableFrom(
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(css::uno::TypeDescription(
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cppu::UnoType< css::uno::RuntimeException >::get()).
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get()),
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ret.getType().get()))
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{
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sal_Int32 n = 0;
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typelib_TypeDescriptionReference ** p = 0;
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switch (req.member.get()->eTypeClass) {
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case typelib_TypeClass_INTERFACE_ATTRIBUTE:
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{
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typelib_InterfaceAttributeTypeDescription * atd =
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reinterpret_cast<
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typelib_InterfaceAttributeTypeDescription * >(
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req.member.get());
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n = req.setter ? atd->nSetExceptions : atd->nGetExceptions;
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p = req.setter
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? atd->ppSetExceptions : atd->ppGetExceptions;
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break;
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}
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case typelib_TypeClass_INTERFACE_METHOD:
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{
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typelib_InterfaceMethodTypeDescription * mtd =
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reinterpret_cast<
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typelib_InterfaceMethodTypeDescription * >(
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req.member.get());
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n = mtd->nExceptions;
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p = mtd->ppExceptions;
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break;
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}
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default:
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assert(false); // this cannot happen
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break;
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}
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bool ok = false;
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for (sal_Int32 i = 0; i != n; ++i) {
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if (typelib_typedescriptionreference_isAssignableFrom(
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p[i],
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reinterpret_cast< typelib_TypeDescriptionReference * >(
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ret.getType().get())))
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{
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ok = true;
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break;
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}
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}
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if (!ok) {
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throw css::uno::RuntimeException(
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"URP: reply message with bad exception type received",
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css::uno::Reference< css::uno::XInterface >());
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}
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}
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} else {
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switch (req.member.get()->eTypeClass) {
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case typelib_TypeClass_INTERFACE_ATTRIBUTE:
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if (!req.setter) {
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ret = unmarshal.readValue(
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css::uno::TypeDescription(
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reinterpret_cast<
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typelib_InterfaceAttributeTypeDescription * >(
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req.member.get())->
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pAttributeTypeRef));
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}
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break;
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case typelib_TypeClass_INTERFACE_METHOD:
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{
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typelib_InterfaceMethodTypeDescription * mtd =
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reinterpret_cast<
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typelib_InterfaceMethodTypeDescription * >(
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req.member.get());
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ret = unmarshal.readValue(
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css::uno::TypeDescription(mtd->pReturnTypeRef));
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for (sal_Int32 i = 0; i != mtd->nParams; ++i) {
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if (mtd->pParams[i].bOut) {
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outArgs.push_back(
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unmarshal.readValue(
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css::uno::TypeDescription(
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mtd->pParams[i].pTypeRef)));
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}
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}
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break;
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}
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default:
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assert(false); // this cannot happen
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break;
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}
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}
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switch (req.kind) {
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case OutgoingRequest::KIND_NORMAL:
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{
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SAL_WNODEPRECATED_DECLARATIONS_PUSH
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std::auto_ptr< IncomingReply > resp(
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new IncomingReply(exc, ret, outArgs));
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SAL_WNODEPRECATED_DECLARATIONS_POP
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uno_threadpool_putJob(
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bridge_->getThreadPool(), tid.getHandle(), resp.get(), 0,
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false);
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resp.release();
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break;
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}
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case OutgoingRequest::KIND_REQUEST_CHANGE:
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assert(outArgs.empty());
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bridge_->handleRequestChangeReply(exc, ret);
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break;
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case OutgoingRequest::KIND_COMMIT_CHANGE:
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assert(outArgs.empty());
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bridge_->handleCommitChangeReply(exc, ret);
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break;
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default:
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assert(false); // this cannot happen
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break;
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}
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}
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rtl::ByteSequence Reader::getTid(Unmarshal & unmarshal, bool newTid) const {
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if (newTid) {
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return unmarshal.readTid();
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}
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if (lastTid_.getLength() == 0) {
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throw css::uno::RuntimeException(
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("URP: message with NEWTID received when last TID has not yet been"
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" set"),
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css::uno::Reference< css::uno::XInterface >());
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}
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return lastTid_;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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