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Diffstat (limited to 'binaryurp/source/marshal.cxx')
| -rw-r--r-- | binaryurp/source/marshal.cxx | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/binaryurp/source/marshal.cxx b/binaryurp/source/marshal.cxx new file mode 100644 index 0000000000..7d60cbf4de --- /dev/null +++ b/binaryurp/source/marshal.cxx @@ -0,0 +1,300 @@ +/* -*- 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 <vector> + +#include <com/sun/star/uno/RuntimeException.hpp> +#include <com/sun/star/uno/Sequence.hxx> +#include <cppu/unotype.hxx> +#include <rtl/byteseq.hxx> +#include <rtl/string.hxx> +#include <rtl/textcvt.h> +#include <rtl/textenc.h> +#include <rtl/ustring.h> +#include <rtl/ustring.hxx> +#include <sal/types.h> +#include <typelib/typeclass.h> +#include <typelib/typedescription.h> +#include <typelib/typedescription.hxx> +#include <uno/dispatcher.hxx> + +#include "binaryany.hxx" +#include "bridge.hxx" +#include "cache.hxx" +#include "lessoperators.hxx" +#include "marshal.hxx" + +namespace binaryurp { + +namespace { + +void write64(std::vector< unsigned char > * buffer, sal_uInt64 value) { + Marshal::write8(buffer, value >> 56); + Marshal::write8(buffer, (value >> 48) & 0xFF); + Marshal::write8(buffer, (value >> 40) & 0xFF); + Marshal::write8(buffer, (value >> 32) & 0xFF); + Marshal::write8(buffer, (value >> 24) & 0xFF); + Marshal::write8(buffer, (value >> 16) & 0xFF); + Marshal::write8(buffer, (value >> 8) & 0xFF); + Marshal::write8(buffer, value & 0xFF); +} + +void writeCompressed(std::vector< unsigned char > * buffer, sal_uInt32 value) { + if (value < 0xFF) { + Marshal::write8(buffer, static_cast< sal_uInt8 >(value)); + } else { + Marshal::write8(buffer, 0xFF); + Marshal::write32(buffer, value); + } +} + +void writeString( + std::vector< unsigned char > * buffer, OUString const & value) +{ + assert(buffer != nullptr); + OString v; + if (!value.convertToString( + &v, RTL_TEXTENCODING_UTF8, + (RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR | + RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR))) + { + throw css::uno::RuntimeException( + "UNO string contains invalid UTF-16 sequence"); + } + writeCompressed(buffer, static_cast< sal_uInt32 >(v.getLength())); + buffer->insert(buffer->end(), v.getStr(), v.getStr() + v.getLength()); +} + +} + +Marshal::Marshal(rtl::Reference< Bridge > const & bridge, WriterState & state): + bridge_(bridge), state_(state) +{ + assert(bridge.is()); +} + +Marshal::~Marshal() {} + +void Marshal::write8(std::vector< unsigned char > * buffer, sal_uInt8 value) { + assert(buffer != nullptr); + buffer->push_back(value); +} + +void Marshal::write16(std::vector< unsigned char > * buffer, sal_uInt16 value) { + write8(buffer, value >> 8); + write8(buffer, value & 0xFF); +} + +void Marshal::write32(std::vector< unsigned char > * buffer, sal_uInt32 value) { + write8(buffer, value >> 24); + write8(buffer, (value >> 16) & 0xFF); + write8(buffer, (value >> 8) & 0xFF); + write8(buffer, value & 0xFF); +} + +void Marshal::writeValue( + std::vector< unsigned char > * buffer, + css::uno::TypeDescription const & type, BinaryAny const & value) +{ + assert( + type.is() && + (type.get()->eTypeClass == typelib_TypeClass_ANY || + value.getType().equals(type))); + writeValue(buffer, type, value.getValue(type)); +} + +void Marshal::writeType( + std::vector< unsigned char > * buffer, + css::uno::TypeDescription const & value) +{ + value.makeComplete(); + assert(value.is()); + typelib_TypeClass tc = value.get()->eTypeClass; + if (tc <= typelib_TypeClass_ANY) { + write8(buffer, static_cast< sal_uInt8 >(tc)); + } else { + bool found; + sal_uInt16 idx = state_.typeCache.add(value, &found); + if (found) { + write8(buffer, static_cast< sal_uInt8 >(tc)); + write16(buffer, idx); + } else { + write8(buffer, static_cast< sal_uInt8 >(tc) | 0x80); + write16(buffer, idx); + writeString(buffer, OUString(value.get()->pTypeName)); + } + } +} + +void Marshal::writeOid( + std::vector< unsigned char > * buffer, OUString const & oid) +{ + bool found; + sal_uInt16 idx; + if ( oid.isEmpty() ) { + found = true; + idx = cache::ignore; + } else { + idx = state_.oidCache.add(oid, &found); + } + if (found) { + write8(buffer, 0); + } else { + writeString(buffer, oid); + } + write16(buffer, idx); +} + +void Marshal::writeTid( + std::vector< unsigned char > * buffer, rtl::ByteSequence const & tid) +{ + bool found; + sal_uInt16 idx = state_.tidCache.add(tid, &found); + if (found) { + write8(buffer, 0); + } else { + sal_Sequence * p = tid.getHandle(); + writeValue( + buffer, + css::uno::TypeDescription( + cppu::UnoType< css::uno::Sequence< sal_Int8 > >::get()), &p); + } + write16(buffer, idx); +} + +void Marshal::writeValue( + std::vector< unsigned char > * buffer, + css::uno::TypeDescription const & type, void const * value) +{ + assert(buffer != nullptr && type.is()); + type.makeComplete(); + switch (type.get()->eTypeClass) { + case typelib_TypeClass_VOID: + break; + case typelib_TypeClass_BOOLEAN: + assert(*static_cast< sal_uInt8 const * >(value) <= 1); + [[fallthrough]]; + case typelib_TypeClass_BYTE: + write8(buffer, *static_cast< sal_uInt8 const * >(value)); + break; + case typelib_TypeClass_SHORT: + case typelib_TypeClass_UNSIGNED_SHORT: + case typelib_TypeClass_CHAR: + write16(buffer, *static_cast< sal_uInt16 const * >(value)); + break; + case typelib_TypeClass_LONG: + case typelib_TypeClass_UNSIGNED_LONG: + case typelib_TypeClass_FLOAT: + case typelib_TypeClass_ENUM: + write32(buffer, *static_cast< sal_uInt32 const * >(value)); + break; + case typelib_TypeClass_HYPER: + case typelib_TypeClass_UNSIGNED_HYPER: + case typelib_TypeClass_DOUBLE: + write64(buffer, *static_cast< sal_uInt64 const * >(value)); + break; + case typelib_TypeClass_STRING: + writeString( + buffer, + OUString(*static_cast< rtl_uString * const * >(value))); + break; + case typelib_TypeClass_TYPE: + writeType( + buffer, + css::uno::TypeDescription( + *static_cast< typelib_TypeDescriptionReference * const * >( + value))); + break; + case typelib_TypeClass_ANY: + { + uno_Any const * p = static_cast< uno_Any const * >(value); + css::uno::TypeDescription t(p->pType); + writeType(buffer, t); + writeValue(buffer, t, p->pData); + break; + } + case typelib_TypeClass_SEQUENCE: + { + sal_Sequence * p = *static_cast< sal_Sequence * const * >(value); + writeCompressed(buffer, static_cast< sal_uInt32 >(p->nElements)); + css::uno::TypeDescription ctd( + reinterpret_cast< typelib_IndirectTypeDescription * >( + type.get())-> + pType); + assert(ctd.is()); + if (ctd.get()->eTypeClass == typelib_TypeClass_BYTE) { + buffer->insert( + buffer->end(), p->elements, p->elements + p->nElements); + } else { + for (sal_Int32 i = 0; i != p->nElements; ++i) { + writeValue(buffer, ctd, p->elements + i * ctd.get()->nSize); + } + } + break; + } + case typelib_TypeClass_STRUCT: + case typelib_TypeClass_EXCEPTION: + writeMemberValues(buffer, type, value); + break; + case typelib_TypeClass_INTERFACE: + writeOid( + buffer, + bridge_->registerOutgoingInterface( + css::uno::UnoInterfaceReference( + *static_cast< uno_Interface * const * >(value)), + type)); + break; + default: + assert(false); // this cannot happen + break; + } +} + +void Marshal::writeMemberValues( + std::vector< unsigned char > * buffer, + css::uno::TypeDescription const & type, void const * aggregateValue) +{ + assert( + type.is() && + (type.get()->eTypeClass == typelib_TypeClass_STRUCT || + type.get()->eTypeClass == typelib_TypeClass_EXCEPTION) && + aggregateValue != nullptr); + type.makeComplete(); + typelib_CompoundTypeDescription * ctd = + reinterpret_cast< typelib_CompoundTypeDescription * >(type.get()); + if (ctd->pBaseTypeDescription != nullptr) { + writeMemberValues( + buffer, + css::uno::TypeDescription(&ctd->pBaseTypeDescription->aBase), + aggregateValue); + } + for (sal_Int32 i = 0; i != ctd->nMembers; ++i) { + writeValue( + buffer, css::uno::TypeDescription(ctd->ppTypeRefs[i]), + (static_cast< char const * >(aggregateValue) + + ctd->pMemberOffsets[i])); + } +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |