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Diffstat (limited to 'binaryurp/source/reader.cxx')
| -rw-r--r-- | binaryurp/source/reader.cxx | 480 |
1 files changed, 480 insertions, 0 deletions
diff --git a/binaryurp/source/reader.cxx b/binaryurp/source/reader.cxx new file mode 100644 index 000000000..cbd18f1d8 --- /dev/null +++ b/binaryurp/source/reader.cxx @@ -0,0 +1,480 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <sal/config.h> + +#include <cassert> +#include <exception> +#include <memory> +#include <vector> + +#include <com/sun/star/connection/XConnection.hpp> +#include <com/sun/star/io/IOException.hpp> +#include <com/sun/star/uno/Any.hxx> +#include <com/sun/star/uno/Exception.hpp> +#include <com/sun/star/uno/Reference.hxx> +#include <com/sun/star/uno/RuntimeException.hpp> +#include <com/sun/star/uno/Sequence.hxx> +#include <com/sun/star/uno/Type.hxx> +#include <com/sun/star/uno/XCurrentContext.hpp> +#include <com/sun/star/uno/XInterface.hpp> +#include <cppu/unotype.hxx> +#include <o3tl/safeint.hxx> +#include <rtl/byteseq.h> +#include <rtl/ustring.hxx> +#include <sal/log.hxx> +#include <sal/types.h> +#include <typelib/typeclass.h> +#include <typelib/typedescription.h> +#include <typelib/typedescription.hxx> + +#include "binaryany.hxx" +#include "bridge.hxx" +#include "incomingreply.hxx" +#include "incomingrequest.hxx" +#include "outgoingrequest.hxx" +#include "reader.hxx" +#include "specialfunctionids.hxx" +#include "unmarshal.hxx" + +namespace binaryurp { + +namespace { + +css::uno::Sequence< sal_Int8 > read( + css::uno::Reference< css::connection::XConnection > const & connection, + sal_uInt32 size, bool eofOk) +{ + assert(connection.is()); + if (size > SAL_MAX_INT32) { + throw css::uno::RuntimeException( + "binaryurp::Reader: block size too large"); + } + css::uno::Sequence< sal_Int8 > buf; + sal_Int32 n = connection->read(buf, static_cast< sal_Int32 >(size)); + if (n == 0 && eofOk) { + return css::uno::Sequence< sal_Int8 >(); + } + if (o3tl::make_unsigned(n) != size) { + throw css::io::IOException( + "binaryurp::Reader: premature end of input"); + } + assert(o3tl::make_unsigned(buf.getLength()) == size); + return buf; +} + +extern "C" void request(void * pThreadSpecificData) { + assert(pThreadSpecificData != nullptr); + std::unique_ptr< IncomingRequest >( + static_cast< IncomingRequest * >(pThreadSpecificData))-> + execute(); +} + +} + +Reader::Reader(rtl::Reference< Bridge > const & bridge): + Thread("binaryurpReader"), bridge_(bridge) +{ + assert(bridge.is()); +} + +Reader::~Reader() {} + +void Reader::execute() { + try { + bridge_->sendRequestChangeRequest(); + css::uno::Reference< css::connection::XConnection > con( + bridge_->getConnection()); + for (;;) { + css::uno::Sequence< sal_Int8 > s(read(con, 8, true)); + if (!s.hasElements()) { + break; + } + Unmarshal header(bridge_, state_, s); + sal_uInt32 size = header.read32(); + sal_uInt32 count = header.read32(); + header.done(); + if (count == 0) { + throw css::io::IOException( + "binaryurp::Reader: block with zero message count received"); + } + Unmarshal block(bridge_, state_, read(con, size, false)); + for (sal_uInt32 i = 0; i != count; ++i) { + readMessage(block); + } + block.done(); + } + } catch (const css::uno::Exception & e) { + SAL_WARN("binaryurp", "caught UNO exception '" << e << '\''); + } catch (const std::exception & e) { + SAL_WARN("binaryurp", "caught C++ exception '" << e.what() << '\''); + } + bridge_->terminate(false); + bridge_.clear(); +} + +void Reader::readMessage(Unmarshal & unmarshal) { + sal_uInt8 flags1 = unmarshal.read8(); + bool newType; + bool newOid; + bool newTid; + bool forceSynchronous; + sal_uInt16 functionId; + if ((flags1 & 0x80) != 0) { // bit 7: LONGHEADER + if ((flags1 & 0x40) == 0) { // bit 6: REQUEST + readReplyMessage(unmarshal, flags1); + return; + } + newType = (flags1 & 0x20) != 0; // bit 5: NEWTYPE + newOid = (flags1 & 0x10) != 0; // bit 4: NEWOID + newTid = (flags1 & 0x08) != 0; // bit 3: NEWTID + if ((flags1 & 0x01) != 0) { // bit 0: MOREFLAGSS + sal_uInt8 flags2 = unmarshal.read8(); + forceSynchronous = (flags2 & 0x80) != 0; // bit 7: MUSTREPLY + if (((flags2 & 0x40) != 0) != forceSynchronous) { + // bit 6: SYNCHRONOUS + throw css::uno::RuntimeException( + "URP: request message with MUSTREPLY != SYNCHRONOUS" + " received"); + } + } else { + forceSynchronous = false; + } + functionId = ((flags1 & 0x04) != 0) // bit 2: FUNCTIONID16 + ? unmarshal.read16() : unmarshal.read8(); + } else { + newType = false; + newOid = false; + newTid = false; + forceSynchronous = false; + functionId = ((flags1 & 0x40) != 0) // bit 6: FUNCTIONID14 + ? ((flags1 & 0x3F) << 8) | unmarshal.read8() : flags1 & 0x3F; + } + css::uno::TypeDescription type; + if (newType) { + type = unmarshal.readType(); + lastType_ = type; + } else { + if (!lastType_.is()) { + throw css::uno::RuntimeException( + "URP: request message with NEWTYPE received when last" + " interface type has not yet been set"); + } + type = lastType_; + } + OUString oid; + if (newOid) { + oid = unmarshal.readOid(); + if (oid.isEmpty()) { + throw css::io::IOException( + "binaryurp::Unmarshal: empty OID"); + } + lastOid_ = oid; + } else { + if (lastOid_.isEmpty()) { + throw css::uno::RuntimeException( + "URP: request message with NEWOID received when last OID has" + " not yet been set"); + } + oid = lastOid_; + } + rtl::ByteSequence tid(getTid(unmarshal, newTid)); + lastTid_ = tid; + type.makeComplete(); + if (type.get()->eTypeClass != typelib_TypeClass_INTERFACE) { + throw css::uno::RuntimeException( + "URP: request message with non-interface interface type received"); + } + typelib_InterfaceTypeDescription * itd = + reinterpret_cast< typelib_InterfaceTypeDescription * >(type.get()); + if (functionId >= itd->nMapFunctionIndexToMemberIndex) { + throw css::uno::RuntimeException( + "URP: request message with unknown function ID received"); + } + sal_Int32 memberId = itd->pMapFunctionIndexToMemberIndex[functionId]; + css::uno::TypeDescription memberTd(itd->ppAllMembers[memberId]); + memberTd.makeComplete(); + assert(memberTd.is()); + bool protProps = bridge_->isProtocolPropertiesRequest(oid, type); + bool ccMode = !protProps && functionId != SPECIAL_FUNCTION_ID_RELEASE && + bridge_->isCurrentContextMode(); + css::uno::UnoInterfaceReference cc; + if (ccMode) { + css::uno::TypeDescription t( + cppu::UnoType<css::uno::XCurrentContext>::get()); + cc.set( + *static_cast< uno_Interface ** >( + unmarshal.readValue(t).getValue(t))); + } + bool oneWay = + memberTd.get()->eTypeClass == typelib_TypeClass_INTERFACE_METHOD && + (reinterpret_cast< typelib_InterfaceMethodTypeDescription * >( + memberTd.get())-> + bOneWay); + SAL_INFO_IF( + !oneWay && forceSynchronous, "binaryurp", + ("superfluous MUSTREPLY/SYNCHRONOUS ignored in request message with" + " non-oneway function ID")); + bool synchronous = !oneWay || forceSynchronous; + bool bSetter = false; + std::vector< BinaryAny > inArgs; + switch (memberTd.get()->eTypeClass) { + case typelib_TypeClass_INTERFACE_ATTRIBUTE: + bSetter = itd->pMapMemberIndexToFunctionIndex[memberId] != functionId; + // pMapMemberIndexToFunctionIndex contains function index of + // attribute getter + if (bSetter) { + inArgs.push_back( + unmarshal.readValue( + css::uno::TypeDescription( + reinterpret_cast< + typelib_InterfaceAttributeTypeDescription * >( + memberTd.get())-> + pAttributeTypeRef))); + } + break; + case typelib_TypeClass_INTERFACE_METHOD: + { + typelib_InterfaceMethodTypeDescription * mtd = + reinterpret_cast< typelib_InterfaceMethodTypeDescription * >( + memberTd.get()); + for (sal_Int32 i = 0; i != mtd->nParams; ++i) { + if (mtd->pParams[i].bIn) { + inArgs.push_back( + unmarshal.readValue( + css::uno::TypeDescription( + mtd->pParams[i].pTypeRef))); + } + } + break; + } + default: + assert(false); // this cannot happen + break; + } + bridge_->incrementCalls( + !protProps && functionId != SPECIAL_FUNCTION_ID_RELEASE); + if (protProps) { + switch (functionId) { + case SPECIAL_FUNCTION_ID_REQUEST_CHANGE: + bridge_->handleRequestChangeRequest(tid, inArgs); + break; + case SPECIAL_FUNCTION_ID_COMMIT_CHANGE: + bridge_->handleCommitChangeRequest(tid, inArgs); + break; + default: + throw css::uno::RuntimeException( + "URP: request message with UrpProtocolProperties OID and" + " unknown function ID received"); + } + } else { + css::uno::UnoInterfaceReference obj; + switch (functionId) { + case SPECIAL_FUNCTION_ID_QUERY_INTERFACE: + obj = bridge_->findStub(oid, type); + if (!obj.is()) { + assert( + inArgs.size() == 1 + && inArgs[0].getType().equals( + css::uno::TypeDescription( + cppu::UnoType< css::uno::Type >::get()))); + if (!(type.equals( + css::uno::TypeDescription( + cppu::UnoType< + css::uno::Reference< + css::uno::XInterface > >::get())) + && (css::uno::TypeDescription( + *static_cast< + typelib_TypeDescriptionReference ** >( + inArgs[0].getValue(inArgs[0].getType()))). + equals( + css::uno::TypeDescription( + cppu::UnoType< + css::uno::Reference< + css::uno::XInterface > >::get()))))) + { + throw css::uno::RuntimeException( + "URP: queryInterface request message with unknown OID '" + + oid + "' received"); + } + } + break; + case SPECIAL_FUNCTION_ID_RESERVED: + throw css::uno::RuntimeException( + "URP: request message with unknown function ID 1 received"); + case SPECIAL_FUNCTION_ID_RELEASE: + break; + default: + obj = bridge_->findStub(oid, type); + if (!obj.is()) { + throw css::uno::RuntimeException( + "URP: request message with unknown OID received"); + } + break; + } + std::unique_ptr< IncomingRequest > req( + new IncomingRequest( + bridge_, tid, oid, obj, type, functionId, synchronous, memberTd, + bSetter, std::move(inArgs), ccMode, cc)); + if (synchronous) { + bridge_->incrementActiveCalls(); + } + uno_threadpool_putJob( + bridge_->getThreadPool(), tid.getHandle(), req.get(), &request, + !synchronous); + req.release(); + } +} + +void Reader::readReplyMessage(Unmarshal & unmarshal, sal_uInt8 flags1) { + rtl::ByteSequence tid(getTid(unmarshal, (flags1 & 0x08) != 0)); + // bit 3: NEWTID + lastTid_ = tid; + OutgoingRequest req(bridge_->lastOutgoingRequest(tid)); + bool exc = (flags1 & 0x20) != 0; // bit 5: EXCEPTION + BinaryAny ret; + std::vector< BinaryAny > outArgs; + if (exc) { + ret = unmarshal.readValue( + css::uno::TypeDescription(cppu::UnoType< css::uno::Any >::get())); + if (!typelib_typedescription_isAssignableFrom( + (css::uno::TypeDescription( + cppu::UnoType< css::uno::RuntimeException >::get()). + get()), + ret.getType().get())) + { + sal_Int32 n = 0; + typelib_TypeDescriptionReference ** p = nullptr; + switch (req.member.get()->eTypeClass) { + case typelib_TypeClass_INTERFACE_ATTRIBUTE: + { + typelib_InterfaceAttributeTypeDescription * atd = + reinterpret_cast< + typelib_InterfaceAttributeTypeDescription * >( + req.member.get()); + n = req.setter ? atd->nSetExceptions : atd->nGetExceptions; + p = req.setter + ? atd->ppSetExceptions : atd->ppGetExceptions; + break; + } + case typelib_TypeClass_INTERFACE_METHOD: + { + typelib_InterfaceMethodTypeDescription * mtd = + reinterpret_cast< + typelib_InterfaceMethodTypeDescription * >( + req.member.get()); + n = mtd->nExceptions; + p = mtd->ppExceptions; + break; + } + default: + assert(false); // this cannot happen + break; + } + bool bOk = false; + for (sal_Int32 i = 0; i != n; ++i) { + if (typelib_typedescriptionreference_isAssignableFrom( + p[i], + reinterpret_cast< typelib_TypeDescriptionReference * >( + ret.getType().get()))) + { + bOk = true; + break; + } + } + if (!bOk) { + throw css::uno::RuntimeException( + "URP: reply message with bad exception type received"); + } + } + } else { + switch (req.member.get()->eTypeClass) { + case typelib_TypeClass_INTERFACE_ATTRIBUTE: + if (!req.setter) { + ret = unmarshal.readValue( + css::uno::TypeDescription( + reinterpret_cast< + typelib_InterfaceAttributeTypeDescription * >( + req.member.get())-> + pAttributeTypeRef)); + } + break; + case typelib_TypeClass_INTERFACE_METHOD: + { + typelib_InterfaceMethodTypeDescription * mtd = + reinterpret_cast< + typelib_InterfaceMethodTypeDescription * >( + req.member.get()); + ret = unmarshal.readValue( + css::uno::TypeDescription(mtd->pReturnTypeRef)); + for (sal_Int32 i = 0; i != mtd->nParams; ++i) { + if (mtd->pParams[i].bOut) { + outArgs.push_back( + unmarshal.readValue( + css::uno::TypeDescription( + mtd->pParams[i].pTypeRef))); + } + } + break; + } + default: + assert(false); // this cannot happen + break; + } + } + switch (req.kind) { + case OutgoingRequest::KIND_NORMAL: + { + std::unique_ptr< IncomingReply > resp( + new IncomingReply(exc, ret, std::move(outArgs))); + uno_threadpool_putJob( + bridge_->getThreadPool(), tid.getHandle(), resp.get(), nullptr, + false); + resp.release(); + break; + } + case OutgoingRequest::KIND_REQUEST_CHANGE: + assert(outArgs.empty()); + bridge_->handleRequestChangeReply(exc, ret); + break; + case OutgoingRequest::KIND_COMMIT_CHANGE: + assert(outArgs.empty()); + bridge_->handleCommitChangeReply(exc, ret); + break; + default: + assert(false); // this cannot happen + break; + } +} + +rtl::ByteSequence Reader::getTid(Unmarshal & unmarshal, bool newTid) const { + if (newTid) { + return unmarshal.readTid(); + } + if (lastTid_.getLength() == 0) { + throw css::uno::RuntimeException( + "URP: message with NEWTID received when last TID has not yet been" + " set"); + } + return lastTid_; +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |