Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 491 insertions, 0 deletions

diff --git a/binaryurp/source/unmarshal.cxx b/binaryurp/source/unmarshal.cxx
new file mode 100644
index 000000000..7d943d37b
--- /dev/null
+++ b/binaryurp/source/unmarshal.cxx
@@ -0,0 +1,491 @@
+/* -*- 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 <cstdlib>
+#include <new>
+#include <utility>
+#include <vector>
+
+#include <com/sun/star/io/IOException.hpp>
+#include <com/sun/star/uno/RuntimeException.hpp>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <cppu/unotype.hxx>
+#include <rtl/byteseq.hxx>
+#include <rtl/ref.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/any2.h>
+#include <uno/data.h>
+#include <uno/dispatcher.hxx>
+
+#include "binaryany.hxx"
+#include "bridge.hxx"
+#include "cache.hxx"
+#include "readerstate.hxx"
+#include "unmarshal.hxx"
+
+namespace binaryurp {
+
+namespace {
+
+void * allocate(sal_Size size) {
+    void * p = std::malloc(size);
+    if (p == nullptr) {
+        throw std::bad_alloc();
+    }
+    return p;
+}
+
+std::vector< BinaryAny >::iterator copyMemberValues(
+    css::uno::TypeDescription const & type,
+    std::vector< BinaryAny >::iterator const & it, void * buffer) noexcept
+{
+    assert(
+        type.is() &&
+        (type.get()->eTypeClass == typelib_TypeClass_STRUCT ||
+         type.get()->eTypeClass == typelib_TypeClass_EXCEPTION) &&
+        buffer != nullptr);
+    type.makeComplete();
+    std::vector< BinaryAny >::iterator i(it);
+    typelib_CompoundTypeDescription * ctd =
+        reinterpret_cast< typelib_CompoundTypeDescription * >(type.get());
+    if (ctd->pBaseTypeDescription != nullptr) {
+        i = copyMemberValues(
+            css::uno::TypeDescription(&ctd->pBaseTypeDescription->aBase), i,
+            buffer);
+    }
+    for (sal_Int32 j = 0; j != ctd->nMembers; ++j) {
+        uno_type_copyData(
+            static_cast< char * >(buffer) + ctd->pMemberOffsets[j],
+            i++->getValue(css::uno::TypeDescription(ctd->ppTypeRefs[j])),
+            ctd->ppTypeRefs[j], nullptr);
+    }
+    return i;
+}
+
+}
+
+Unmarshal::Unmarshal(
+    rtl::Reference< Bridge > bridge, ReaderState & state,
+    css::uno::Sequence< sal_Int8 > const & buffer):
+    bridge_(std::move(bridge)), state_(state), buffer_(buffer)
+{
+    data_ = reinterpret_cast< sal_uInt8 const * >(buffer_.getConstArray());
+    end_ = data_ + buffer_.getLength();
+}
+
+Unmarshal::~Unmarshal() {}
+
+sal_uInt8 Unmarshal::read8() {
+    check(1);
+    return *data_++;
+}
+
+sal_uInt16 Unmarshal::read16() {
+    check(2);
+    sal_uInt16 n = static_cast< sal_uInt16 >(*data_++) << 8;
+    return n | *data_++;
+}
+
+sal_uInt32 Unmarshal::read32() {
+    check(4);
+    sal_uInt32 n = static_cast< sal_uInt32 >(*data_++) << 24;
+    n |= static_cast< sal_uInt32 >(*data_++) << 16;
+    n |= static_cast< sal_uInt32 >(*data_++) << 8;
+    return n | *data_++;
+}
+
+css::uno::TypeDescription Unmarshal::readType() {
+    sal_uInt8 flags = read8();
+    typelib_TypeClass tc = static_cast< typelib_TypeClass >(flags & 0x7F);
+    switch (tc) {
+    case typelib_TypeClass_VOID:
+    case typelib_TypeClass_BOOLEAN:
+    case typelib_TypeClass_BYTE:
+    case typelib_TypeClass_SHORT:
+    case typelib_TypeClass_UNSIGNED_SHORT:
+    case typelib_TypeClass_LONG:
+    case typelib_TypeClass_UNSIGNED_LONG:
+    case typelib_TypeClass_HYPER:
+    case typelib_TypeClass_UNSIGNED_HYPER:
+    case typelib_TypeClass_FLOAT:
+    case typelib_TypeClass_DOUBLE:
+    case typelib_TypeClass_CHAR:
+    case typelib_TypeClass_STRING:
+    case typelib_TypeClass_TYPE:
+    case typelib_TypeClass_ANY:
+        if ((flags & 0x80) != 0) {
+            throw css::io::IOException(
+                "binaryurp::Unmarshal: cache flag of simple type is set");
+        }
+        return css::uno::TypeDescription(
+            *typelib_static_type_getByTypeClass(tc));
+    case typelib_TypeClass_SEQUENCE:
+    case typelib_TypeClass_ENUM:
+    case typelib_TypeClass_STRUCT:
+    case typelib_TypeClass_EXCEPTION:
+    case typelib_TypeClass_INTERFACE:
+        {
+            sal_uInt16 idx = readCacheIndex();
+            if ((flags & 0x80) == 0) {
+                if (idx == cache::ignore || !state_.typeCache[idx].is()) {
+                    throw css::io::IOException(
+                        "binaryurp::Unmarshal: unknown type cache index");
+                }
+                return state_.typeCache[idx];
+            } else {
+                OUString const str(readString());
+                css::uno::TypeDescription t(str);
+                if (!t.is() || t.get()->eTypeClass != tc) {
+
+                    throw css::io::IOException(
+                        "binaryurp::Unmarshal: type with unknown name: " + str);
+                }
+                for (css::uno::TypeDescription t2(t);
+                     t2.get()->eTypeClass == typelib_TypeClass_SEQUENCE;)
+                {
+                    t2.makeComplete();
+                    t2 = css::uno::TypeDescription(
+                        reinterpret_cast< typelib_IndirectTypeDescription * >(
+                            t2.get())->pType);
+                    if (!t2.is()) {
+                        throw css::io::IOException(
+                            "binaryurp::Unmarshal: sequence type with unknown"
+                            " component type");
+                    }
+                    switch (t2.get()->eTypeClass) {
+                    case typelib_TypeClass_VOID:
+                    case typelib_TypeClass_EXCEPTION:
+                        throw css::io::IOException(
+                            "binaryurp::Unmarshal: sequence type with bad"
+                            " component type");
+                    default:
+                        break;
+                    }
+                }
+                if (idx != cache::ignore) {
+                    state_.typeCache[idx] = t;
+                }
+                return t;
+            }
+        }
+    default:
+        throw css::io::IOException(
+            "binaryurp::Unmarshal: type of unknown type class");
+    }
+}
+
+OUString Unmarshal::readOid() {
+    OUString oid(readString());
+    for (sal_Int32 i = 0; i != oid.getLength(); ++i) {
+        if (oid[i] > 0x7F) {
+            throw css::io::IOException(
+                "binaryurp::Unmarshal: OID contains non-ASCII character");
+        }
+    }
+    sal_uInt16 idx = readCacheIndex();
+    if (oid.isEmpty() && idx != cache::ignore) {
+        if (state_.oidCache[idx].isEmpty()) {
+            throw css::io::IOException(
+                "binaryurp::Unmarshal: unknown OID cache index");
+        }
+        return state_.oidCache[idx];
+    }
+    if (idx != cache::ignore) {
+        state_.oidCache[idx] = oid;
+    }
+    return oid;
+}
+
+rtl::ByteSequence Unmarshal::readTid() {
+    rtl::ByteSequence tid(
+        *static_cast< sal_Sequence * const * >(
+            readSequence(
+                css::uno::TypeDescription(
+                    cppu::UnoType< css::uno::Sequence< sal_Int8 > >::get())).
+            getValue(
+                css::uno::TypeDescription(
+                    cppu::UnoType< css::uno::Sequence< sal_Int8 > >::get()))));
+    sal_uInt16 idx = readCacheIndex();
+    if (tid.getLength() == 0) {
+        if (idx == cache::ignore || state_.tidCache[idx].getLength() == 0) {
+            throw css::io::IOException(
+                "binaryurp::Unmarshal: unknown TID cache index");
+        }
+        return state_.tidCache[idx];
+    }
+    if (idx != cache::ignore) {
+        state_.tidCache[idx] = tid;
+    }
+    return tid;
+}
+
+BinaryAny Unmarshal::readValue(css::uno::TypeDescription const & type) {
+    assert(type.is());
+    switch (type.get()->eTypeClass) {
+    default:
+        std::abort(); // this cannot happen
+        // pseudo fall-through to avoid compiler warnings
+    case typelib_TypeClass_VOID:
+        return BinaryAny();
+    case typelib_TypeClass_BOOLEAN:
+        {
+            sal_uInt8 v = read8();
+            if (v > 1) {
+                throw css::io::IOException(
+                    "binaryurp::Unmarshal: boolean of unknown value");
+            }
+            return BinaryAny(type, &v);
+        }
+    case typelib_TypeClass_BYTE:
+        {
+            sal_uInt8 v = read8();
+            return BinaryAny(type, &v);
+        }
+    case typelib_TypeClass_SHORT:
+    case typelib_TypeClass_UNSIGNED_SHORT:
+    case typelib_TypeClass_CHAR:
+        {
+            sal_uInt16 v = read16();
+            return BinaryAny(type, &v);
+        }
+    case typelib_TypeClass_LONG:
+    case typelib_TypeClass_UNSIGNED_LONG:
+    case typelib_TypeClass_FLOAT:
+        {
+            sal_uInt32 v = read32();
+            return BinaryAny(type, &v);
+        }
+    case typelib_TypeClass_HYPER:
+    case typelib_TypeClass_UNSIGNED_HYPER:
+    case typelib_TypeClass_DOUBLE:
+        {
+            sal_uInt64 v = read64();
+            return BinaryAny(type, &v);
+        }
+    case typelib_TypeClass_STRING:
+        {
+            OUString v(readString());
+            return BinaryAny(type, &v.pData);
+        }
+    case typelib_TypeClass_TYPE:
+        {
+            css::uno::TypeDescription v(readType());
+            typelib_TypeDescription * p = v.get();
+            return BinaryAny(type, &p);
+        }
+    case typelib_TypeClass_ANY:
+        {
+            css::uno::TypeDescription t(readType());
+            if (t.get()->eTypeClass == typelib_TypeClass_ANY) {
+                throw css::io::IOException(
+                    "binaryurp::Unmarshal: any of type ANY");
+            }
+            return readValue(t);
+        }
+    case typelib_TypeClass_SEQUENCE:
+        type.makeComplete();
+        return readSequence(type);
+    case typelib_TypeClass_ENUM:
+        {
+            sal_Int32 v = static_cast< sal_Int32 >(read32());
+            type.makeComplete();
+            typelib_EnumTypeDescription * etd =
+                reinterpret_cast< typelib_EnumTypeDescription * >(type.get());
+            bool bFound = false;
+            for (sal_Int32 i = 0; i != etd->nEnumValues; ++i) {
+                if (etd->pEnumValues[i] == v) {
+                    bFound = true;
+                    break;
+                }
+            }
+            if (!bFound) {
+                throw css::io::IOException(
+                    "binaryurp::Unmarshal: unknown enum value");
+            }
+            return BinaryAny(type, &v);
+        }
+    case typelib_TypeClass_STRUCT:
+    case typelib_TypeClass_EXCEPTION:
+        {
+            std::vector< BinaryAny > as;
+            readMemberValues(type, &as);
+            void * buf = allocate(type.get()->nSize);
+            copyMemberValues(type, as.begin(), buf);
+            uno_Any raw;
+            raw.pType = reinterpret_cast< typelib_TypeDescriptionReference * >(
+                type.get());
+            raw.pData = buf;
+            raw.pReserved = nullptr;
+            return BinaryAny(raw);
+        }
+    case typelib_TypeClass_INTERFACE:
+        {
+            css::uno::UnoInterfaceReference obj(
+                bridge_->registerIncomingInterface(readOid(), type));
+            return BinaryAny(type, &obj.m_pUnoI);
+        }
+    }
+}
+
+void Unmarshal::done() const {
+    if (data_ != end_) {
+        throw css::io::IOException(
+            "binaryurp::Unmarshal: block contains excess data");
+    }
+}
+
+void Unmarshal::check(sal_Int32 size) const {
+    if (end_ - data_ < size) {
+        throw css::io::IOException(
+            "binaryurp::Unmarshal: trying to read past end of block");
+    }
+}
+
+sal_uInt32 Unmarshal::readCompressed() {
+    sal_uInt8 n = read8();
+    return n == 0xFF ? read32() : n;
+}
+
+sal_uInt16 Unmarshal::readCacheIndex() {
+    sal_uInt16 idx = read16();
+    if (idx >= cache::size && idx != cache::ignore) {
+        throw css::io::IOException(
+            "binaryurp::Unmarshal: cache index out of range");
+    }
+    return idx;
+}
+
+sal_uInt64 Unmarshal::read64() {
+    check(8);
+    sal_uInt64 n = static_cast< sal_uInt64 >(*data_++) << 56;
+    n |= static_cast< sal_uInt64 >(*data_++) << 48;
+    n |= static_cast< sal_uInt64 >(*data_++) << 40;
+    n |= static_cast< sal_uInt64 >(*data_++) << 32;
+    n |= static_cast< sal_uInt64 >(*data_++) << 24;
+    n |= static_cast< sal_uInt64 >(*data_++) << 16;
+    n |= static_cast< sal_uInt64 >(*data_++) << 8;
+    return n | *data_++;
+}
+
+OUString Unmarshal::readString() {
+    sal_uInt32 n = readCompressed();
+    if (n > SAL_MAX_INT32) {
+        throw css::uno::RuntimeException(
+            "binaryurp::Unmarshal: string size too large");
+    }
+    check(static_cast< sal_Int32 >(n));
+    OUString s;
+    if (!rtl_convertStringToUString(
+            &s.pData, reinterpret_cast< char const * >(data_),
+            static_cast< sal_Int32 >(n), RTL_TEXTENCODING_UTF8,
+            (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR |
+             RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR |
+             RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR)))
+    {
+        throw css::io::IOException(
+            "binaryurp::Unmarshal: string does not contain UTF-8");
+    }
+    data_ += n;
+    return s;
+}
+
+BinaryAny Unmarshal::readSequence(css::uno::TypeDescription const & type) {
+    assert(type.is() && type.get()->eTypeClass == typelib_TypeClass_SEQUENCE);
+    sal_uInt32 n = readCompressed();
+    if (n > SAL_MAX_INT32) {
+        throw css::uno::RuntimeException(
+            "binaryurp::Unmarshal: sequence size too large");
+    }
+    if (n == 0) {
+        return BinaryAny(type, nullptr);
+    }
+    css::uno::TypeDescription ctd(
+        reinterpret_cast< typelib_IndirectTypeDescription * >(
+            type.get())->pType);
+    if (ctd.get()->eTypeClass == typelib_TypeClass_BYTE) {
+        check(static_cast< sal_Int32 >(n));
+        rtl::ByteSequence s(
+            reinterpret_cast< sal_Int8 const * >(data_),
+            static_cast< sal_Int32 >(n));
+        data_ += n;
+        sal_Sequence * p = s.getHandle();
+        return BinaryAny(type, &p);
+    }
+    std::vector< BinaryAny > as;
+    as.reserve(n);
+    for (sal_uInt32 i = 0; i != n; ++i) {
+        as.push_back(readValue(ctd));
+    }
+    assert(ctd.get()->nSize >= 0);
+    sal_uInt64 size = static_cast< sal_uInt64 >(n) *
+        static_cast< sal_uInt64 >(ctd.get()->nSize);
+        // sal_uInt32 * sal_Int32 -> sal_uInt64 cannot overflow
+    if (size > SAL_MAX_SIZE - SAL_SEQUENCE_HEADER_SIZE) {
+        throw css::uno::RuntimeException(
+            "binaryurp::Unmarshal: sequence size too large");
+    }
+    void * buf = allocate(
+        SAL_SEQUENCE_HEADER_SIZE + static_cast< sal_Size >(size));
+    static_cast< sal_Sequence * >(buf)->nRefCount = 0;
+    static_cast< sal_Sequence * >(buf)->nElements =
+        static_cast< sal_Int32 >(n);
+    for (sal_uInt32 i = 0; i != n; ++i) {
+        uno_copyData(
+            static_cast< sal_Sequence * >(buf)->elements + i * ctd.get()->nSize,
+            as[i].getValue(ctd), ctd.get(), nullptr);
+    }
+    return BinaryAny(type, &buf);
+}
+
+void Unmarshal::readMemberValues(
+    css::uno::TypeDescription const & type, std::vector< BinaryAny > * values)
+{
+    assert(
+        type.is() &&
+        (type.get()->eTypeClass == typelib_TypeClass_STRUCT ||
+         type.get()->eTypeClass == typelib_TypeClass_EXCEPTION) &&
+        values != nullptr);
+    type.makeComplete();
+    typelib_CompoundTypeDescription * ctd =
+        reinterpret_cast< typelib_CompoundTypeDescription * >(type.get());
+    if (ctd->pBaseTypeDescription != nullptr) {
+        readMemberValues(
+            css::uno::TypeDescription(&ctd->pBaseTypeDescription->aBase),
+            values);
+    }
+    values->reserve(values->size() + ctd->nMembers);
+    for (sal_Int32 i = 0; i != ctd->nMembers; ++i) {
+        values->push_back(
+            readValue(css::uno::TypeDescription(ctd->ppTypeRefs[i])));
+    }
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */