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, 455 insertions, 0 deletions

diff --git a/binaryurp/source/writer.cxx b/binaryurp/source/writer.cxx
new file mode 100644
index 000000000..539d8a2c5
--- /dev/null
+++ b/binaryurp/source/writer.cxx
@@ -0,0 +1,455 @@
+/* -*- 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 <cstddef>
+#include <cstring>
+#include <exception>
+#include <limits>
+#include <utility>
+#include <vector>
+
+#include <com/sun/star/connection/XConnection.hpp>
+#include <com/sun/star/io/IOException.hpp>
+#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
+#include <com/sun/star/uno/XCurrentContext.hpp>
+#include <cppuhelper/exc_hlp.hxx>
+#include <sal/log.hxx>
+#include <uno/dispatcher.hxx>
+
+#include "binaryany.hxx"
+#include "bridge.hxx"
+#include "currentcontext.hxx"
+#include "specialfunctionids.hxx"
+#include "writer.hxx"
+
+namespace binaryurp {
+
+Writer::Item::Item()
+    : request(false)
+    , setter(false)
+    , exception(false)
+    , setCurrentContextMode(false)
+{}
+
+Writer::Item::Item(
+    rtl::ByteSequence theTid, OUString theOid,
+    css::uno::TypeDescription theType,
+    css::uno::TypeDescription theMember,
+    std::vector< BinaryAny >&& inArguments,
+    css::uno::UnoInterfaceReference theCurrentContext):
+    tid(std::move(theTid)), oid(std::move(theOid)), type(std::move(theType)), member(std::move(theMember)),
+    currentContext(std::move(theCurrentContext)), arguments(std::move(inArguments)),
+    request(true), setter(false), exception(false), setCurrentContextMode(false)
+{}
+
+Writer::Item::Item(
+    rtl::ByteSequence theTid,
+    css::uno::TypeDescription theMember, bool theSetter,
+    bool theException, BinaryAny theReturnValue,
+    std::vector< BinaryAny >&& outArguments,
+    bool theSetCurrentContextMode):
+    tid(std::move(theTid)), member(std::move(theMember)),
+    returnValue(std::move(theReturnValue)), arguments(std::move(outArguments)),
+    request(false), setter(theSetter),
+    exception(theException), setCurrentContextMode(theSetCurrentContextMode)
+{}
+
+Writer::Writer(rtl::Reference< Bridge > const  & bridge):
+    Thread("binaryurpWriter"), bridge_(bridge), marshal_(bridge, state_),
+    stop_(false)
+{
+    assert(bridge.is());
+}
+
+void Writer::sendDirectRequest(
+    rtl::ByteSequence const & tid, OUString const & oid,
+    css::uno::TypeDescription const & type,
+    css::uno::TypeDescription const & member,
+    std::vector< BinaryAny > const & inArguments)
+{
+    assert(!unblocked_.check());
+    sendRequest(
+        tid, oid, type, member, inArguments, false,
+        css::uno::UnoInterfaceReference());
+}
+
+void Writer::sendDirectReply(
+    rtl::ByteSequence const & tid, css::uno::TypeDescription const & member,
+    bool exception, BinaryAny const & returnValue,
+    std::vector< BinaryAny > const & outArguments)
+{
+    assert(!unblocked_.check());
+    sendReply(tid, member, false, exception, returnValue,outArguments);
+}
+
+void Writer::queueRequest(
+    rtl::ByteSequence const & tid, OUString const & oid,
+    css::uno::TypeDescription const & type,
+    css::uno::TypeDescription const & member,
+    std::vector< BinaryAny >&& inArguments)
+{
+    css::uno::UnoInterfaceReference cc(current_context::get());
+    std::lock_guard g(mutex_);
+    queue_.emplace_back(tid, oid, type, member, std::move(inArguments), cc);
+    items_.set();
+}
+
+void Writer::queueReply(
+    rtl::ByteSequence const & tid,
+    com::sun::star::uno::TypeDescription const & member, bool setter,
+    bool exception, BinaryAny const & returnValue,
+    std::vector< BinaryAny >&& outArguments, bool setCurrentContextMode)
+{
+    std::lock_guard g(mutex_);
+    queue_.emplace_back(
+            tid, member, setter, exception, returnValue, std::move(outArguments),
+            setCurrentContextMode);
+    items_.set();
+}
+
+void Writer::unblock() {
+    // Assumes that osl::Condition::set works as a memory barrier, so that
+    // changes made by preceding sendDirectRequest/Reply calls are visible to
+    // subsequent sendRequest/Reply calls:
+    unblocked_.set();
+}
+
+void Writer::stop() {
+    {
+        std::lock_guard g(mutex_);
+        stop_ = true;
+    }
+    unblocked_.set();
+    items_.set();
+}
+
+Writer::~Writer() {}
+
+void Writer::execute() {
+    try {
+        unblocked_.wait();
+        for (;;) {
+            items_.wait();
+            Item item;
+            {
+                std::lock_guard g(mutex_);
+                if (stop_) {
+                    return;
+                }
+                assert(!queue_.empty());
+                item = queue_.front();
+                queue_.pop_front();
+                if (queue_.empty()) {
+                    items_.reset();
+                }
+            }
+            if (item.request) {
+                sendRequest(
+                    item.tid, item.oid, item.type, item.member, item.arguments,
+                    (item.oid != "UrpProtocolProperties" &&
+                     !item.member.equals(
+                         css::uno::TypeDescription(
+                             "com.sun.star.uno.XInterface::release")) &&
+                     bridge_->isCurrentContextMode()),
+                    item.currentContext);
+            } else {
+                sendReply(
+                    item.tid, item.member, item.setter, item.exception,
+                    item.returnValue, item.arguments);
+                if (item.setCurrentContextMode) {
+                    bridge_->setCurrentContextMode();
+                }
+            }
+        }
+    } catch (const css::uno::Exception & e) {
+        SAL_INFO("binaryurp", "caught " << e);
+    } catch (const std::exception & e) {
+        SAL_INFO("binaryurp", "caught C++ exception " << e.what());
+    }
+    bridge_->terminate(false);
+    bridge_.clear();
+}
+
+void Writer::sendRequest(
+    rtl::ByteSequence const & tid, OUString const & oid,
+    css::uno::TypeDescription const & type,
+    css::uno::TypeDescription const & member,
+    std::vector< BinaryAny > const & inArguments, bool currentContextMode,
+    css::uno::UnoInterfaceReference const & currentContext)
+{
+    assert(tid.getLength() != 0);
+    assert(!oid.isEmpty());
+    assert(member.is());
+    css::uno::TypeDescription t(type);
+    sal_Int32 functionId = 0;
+    bool bForceSynchronous = false;
+    member.makeComplete();
+    switch (member.get()->eTypeClass) {
+    case typelib_TypeClass_INTERFACE_ATTRIBUTE:
+        {
+            typelib_InterfaceAttributeTypeDescription * atd =
+                reinterpret_cast< typelib_InterfaceAttributeTypeDescription * >(
+                    member.get());
+            assert(atd->pInterface != nullptr);
+            if (!t.is()) {
+                t = css::uno::TypeDescription(&atd->pInterface->aBase);
+            }
+            t.makeComplete();
+            functionId = atd->pInterface->pMapMemberIndexToFunctionIndex[
+                atd->aBase.nPosition];
+            if (!inArguments.empty()) { // setter
+                ++functionId;
+            }
+            break;
+        }
+    case typelib_TypeClass_INTERFACE_METHOD:
+        {
+            typelib_InterfaceMethodTypeDescription * mtd =
+                reinterpret_cast< typelib_InterfaceMethodTypeDescription * >(
+                    member.get());
+            assert(mtd->pInterface != nullptr);
+            if (!t.is()) {
+                t = css::uno::TypeDescription(&mtd->pInterface->aBase);
+            }
+            t.makeComplete();
+            functionId = mtd->pInterface->pMapMemberIndexToFunctionIndex[
+                mtd->aBase.nPosition];
+            bForceSynchronous = mtd->bOneWay &&
+                functionId != SPECIAL_FUNCTION_ID_RELEASE;
+            break;
+        }
+    default:
+        assert(false); // this cannot happen
+        break;
+    }
+    assert(functionId >= 0);
+    if (functionId > SAL_MAX_UINT16) {
+        throw css::uno::RuntimeException("function ID too large for URP");
+    }
+    std::vector< unsigned char > buf;
+    bool newType = !(lastType_.is() && t.equals(lastType_));
+    bool newOid = oid != lastOid_;
+    bool newTid = tid != lastTid_;
+    if (newType || newOid || newTid || bForceSynchronous || functionId > 0x3FFF)
+        // > 14 bit function ID
+    {
+        Marshal::write8(
+            &buf,
+            (0xC0 | (newType ? 0x20 : 0) | (newOid ? 0x10 : 0) |
+             (newTid ? 0x08 : 0) | (functionId > 0xFF ? 0x04 : 0) |
+             (bForceSynchronous ? 0x01 : 0)));
+            // bit 7: LONGHEADER, bit 6: REQUEST, bit 5: NEWTYPE, bit 4: NEWOID,
+            // bit 3: NEWTID, bit 2: FUNCTIONID16, bit 0: MOREFLAGS
+        if (bForceSynchronous) {
+            Marshal::write8(&buf, 0xC0); // bit 7: MUSTREPLY, bit 6: SYNCHRONOUS
+        }
+        if (functionId <= 0xFF) {
+            Marshal::write8(&buf, static_cast< sal_uInt8 >(functionId));
+        } else {
+            Marshal::write16(&buf, static_cast< sal_uInt16 >(functionId));
+        }
+        if (newType) {
+            marshal_.writeType(&buf, t);
+        }
+        if (newOid) {
+            marshal_.writeOid(&buf, oid);
+        }
+        if (newTid) {
+            marshal_.writeTid(&buf, tid);
+        }
+    } else if (functionId <= 0x3F) { // <= 6 bit function ID
+        Marshal::write8(&buf, static_cast< sal_uInt8 >(functionId));
+            // bit 7: !LONGHEADER, bit 6: !FUNCTIONID14
+    } else {
+        Marshal::write8(
+            &buf, static_cast< sal_uInt8 >(0x40 | (functionId >> 8)));
+            // bit 7: !LONGHEADER, bit 6: FUNCTIONID14
+        Marshal::write8(&buf, functionId & 0xFF);
+    }
+    if (currentContextMode) {
+        css::uno::UnoInterfaceReference cc(currentContext);
+        marshal_.writeValue(
+            &buf,
+            css::uno::TypeDescription(
+                cppu::UnoType<
+                    css::uno::Reference< css::uno::XCurrentContext > >::get()),
+            BinaryAny(
+                css::uno::TypeDescription(
+                    cppu::UnoType<
+                        css::uno::Reference<
+                            css::uno::XCurrentContext > >::get()),
+                &cc.m_pUnoI));
+    }
+    switch (member.get()->eTypeClass) {
+    case typelib_TypeClass_INTERFACE_ATTRIBUTE:
+        if (!inArguments.empty()) { // setter
+            assert(inArguments.size() == 1);
+            marshal_.writeValue(
+                &buf,
+                css::uno::TypeDescription(
+                    reinterpret_cast<
+                        typelib_InterfaceAttributeTypeDescription * >(
+                            member.get())->
+                    pAttributeTypeRef),
+                inArguments.front());
+        }
+        break;
+    case typelib_TypeClass_INTERFACE_METHOD:
+        {
+            typelib_InterfaceMethodTypeDescription * mtd =
+                reinterpret_cast< typelib_InterfaceMethodTypeDescription * >(
+                    member.get());
+            std::vector< BinaryAny >::const_iterator i(inArguments.begin());
+            for (sal_Int32 j = 0; j != mtd->nParams; ++j) {
+                if (mtd->pParams[j].bIn) {
+                    marshal_.writeValue(
+                        &buf,
+                        css::uno::TypeDescription(mtd->pParams[j].pTypeRef),
+                        *i++);
+                }
+            }
+            assert(i == inArguments.end());
+            break;
+        }
+    default:
+        assert(false); // this cannot happen
+        break;
+    }
+    sendMessage(buf);
+    lastType_ = t;
+    lastOid_ = oid;
+    lastTid_ = tid;
+}
+
+void Writer::sendReply(
+    rtl::ByteSequence const & tid,
+    com::sun::star::uno::TypeDescription const & member, bool setter,
+    bool exception, BinaryAny const & returnValue,
+    std::vector< BinaryAny > const & outArguments)
+{
+    assert(tid.getLength() != 0);
+    assert(member.is());
+    assert(member.get()->bComplete);
+    std::vector< unsigned char > buf;
+    bool newTid = tid != lastTid_;
+    Marshal::write8(&buf, 0x80 | (exception ? 0x20 : 0) | (newTid ? 0x08 : 0));
+        // bit 7: LONGHEADER; bit 6: !REQUEST; bit 5: EXCEPTION; bit 3: NEWTID
+    if (newTid) {
+        marshal_.writeTid(&buf, tid);
+    }
+    if (exception) {
+        marshal_.writeValue(
+            &buf,
+            css::uno::TypeDescription(cppu::UnoType< css::uno::Any >::get()),
+            returnValue);
+    } else {
+        switch (member.get()->eTypeClass) {
+        case typelib_TypeClass_INTERFACE_ATTRIBUTE:
+            if (!setter) {
+                marshal_.writeValue(
+                    &buf,
+                    css::uno::TypeDescription(
+                        reinterpret_cast<
+                            typelib_InterfaceAttributeTypeDescription * >(
+                                member.get())->
+                        pAttributeTypeRef),
+                    returnValue);
+            }
+            break;
+        case typelib_TypeClass_INTERFACE_METHOD:
+            {
+                typelib_InterfaceMethodTypeDescription * mtd =
+                    reinterpret_cast<
+                        typelib_InterfaceMethodTypeDescription * >(
+                            member.get());
+                marshal_.writeValue(
+                    &buf, css::uno::TypeDescription(mtd->pReturnTypeRef),
+                    returnValue);
+                std::vector< BinaryAny >::const_iterator i(
+                    outArguments.begin());
+                for (sal_Int32 j = 0; j != mtd->nParams; ++j) {
+                    if (mtd->pParams[j].bOut) {
+                        marshal_.writeValue(
+                            &buf,
+                            css::uno::TypeDescription(mtd->pParams[j].pTypeRef),
+                            *i++);
+                    }
+                }
+                assert(i == outArguments.end());
+                break;
+            }
+        default:
+            assert(false); // this cannot happen
+            break;
+        }
+    }
+    sendMessage(buf);
+    lastTid_ = tid;
+    bridge_->decrementCalls();
+}
+
+void Writer::sendMessage(std::vector< unsigned char > const & buffer) {
+    std::vector< unsigned char > header;
+    if (buffer.size() > SAL_MAX_UINT32) {
+        throw css::uno::RuntimeException(
+            "message too large for URP");
+    }
+    Marshal::write32(&header, static_cast< sal_uInt32 >(buffer.size()));
+    Marshal::write32(&header, 1);
+    assert(!buffer.empty());
+    unsigned char const * p = buffer.data();
+    std::vector< unsigned char >::size_type n = buffer.size();
+    assert(header.size() <= SAL_MAX_INT32);
+    /*static_*/assert(SAL_MAX_INT32 <= std::numeric_limits<std::size_t>::max());
+    std::size_t k = SAL_MAX_INT32 - header.size();
+    if (n < k) {
+        k = n;
+    }
+    css::uno::Sequence<sal_Int8> s(header.size() + k);
+    assert(!header.empty());
+    std::memcpy(s.getArray(), header.data(), header.size());
+    for (;;) {
+        std::memcpy(s.getArray() + s.getLength() - k, p, k);
+        try {
+            bridge_->getConnection()->write(s);
+        } catch (const css::io::IOException & e) {
+            css::uno::Any exc(cppu::getCaughtException());
+            throw css::lang::WrappedTargetRuntimeException(
+                "Binary URP write raised IO exception: " + e.Message,
+                css::uno::Reference< css::uno::XInterface >(), exc);
+        }
+        n -= k;
+        if (n == 0) {
+            break;
+        }
+        p += k;
+        k = SAL_MAX_INT32;
+        if (n < k) {
+            k = n;
+        }
+        s.realloc(k);
+    }
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */