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, 571 insertions, 0 deletions

diff --git a/connectivity/source/drivers/postgresql/pq_connection.cxx b/connectivity/source/drivers/postgresql/pq_connection.cxx
new file mode 100644
index 000000000..6661a97d5
--- /dev/null
+++ b/connectivity/source/drivers/postgresql/pq_connection.cxx
@@ -0,0 +1,571 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ *  Effective License of whole file:
+ *
+ *    This library is free software; you can redistribute it and/or
+ *    modify it under the terms of the GNU Lesser General Public
+ *    License version 2.1, as published by the Free Software Foundation.
+ *
+ *    This library is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *    Lesser General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Lesser General Public
+ *    License along with this library; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *    MA  02111-1307  USA
+ *
+ *  Parts "Copyright by Sun Microsystems, Inc" prior to August 2011:
+ *
+ *    The Contents of this file are made available subject to the terms of
+ *    the GNU Lesser General Public License Version 2.1
+ *
+ *    Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ *    Contributor(s): Joerg Budischewski
+ *
+ *  All parts contributed on or after August 2011:
+ *
+ *    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/.
+ *
+ ************************************************************************/
+
+#include <vector>
+#include <string.h>
+
+#include <memory>
+
+#include "pq_connection.hxx"
+#include "pq_statement.hxx"
+#include "pq_tools.hxx"
+#include "pq_preparedstatement.hxx"
+#include "pq_databasemetadata.hxx"
+#include "pq_xtables.hxx"
+#include "pq_xviews.hxx"
+#include "pq_xusers.hxx"
+
+#include <rtl/ref.hxx>
+#include <rtl/uuid.h>
+#include <sal/log.hxx>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <com/sun/star/beans/PropertyValue.hpp>
+#include <com/sun/star/script/Converter.hpp>
+#include <com/sun/star/sdbc/SQLException.hpp>
+
+using osl::MutexGuard;
+
+using com::sun::star::container::XNameAccess;
+
+using com::sun::star::lang::XComponent;
+using com::sun::star::lang::IllegalArgumentException;
+
+using com::sun::star::script::Converter;
+using com::sun::star::script::XTypeConverter;
+
+using com::sun::star::uno::RuntimeException;
+using com::sun::star::uno::Sequence;
+using com::sun::star::uno::Reference;
+using com::sun::star::uno::XInterface;
+using com::sun::star::uno::UNO_QUERY;
+using com::sun::star::uno::UNO_QUERY_THROW;
+using com::sun::star::uno::XComponentContext;
+using com::sun::star::uno::Any;
+
+using com::sun::star::beans::PropertyValue;
+
+using com::sun::star::sdbc::XCloseable;
+using com::sun::star::sdbc::SQLException;
+using com::sun::star::sdbc::XPreparedStatement;
+using com::sun::star::sdbc::XStatement;
+using com::sun::star::sdbc::XDatabaseMetaData;
+
+namespace pq_sdbc_driver
+{
+
+namespace {
+
+// Helper class for statement lifetime management
+class ClosableReference : public cppu::WeakImplHelper< css::uno::XReference >
+{
+    rtl::Reference<Connection> m_conn;
+    ::rtl::ByteSequence m_id;
+public:
+    ClosableReference( const ::rtl::ByteSequence & id , Connection *that )
+      :  m_conn( that ), m_id( id )
+    {
+    }
+
+    virtual void SAL_CALL dispose() override
+    {
+        if( m_conn.is() )
+        {
+            m_conn->removeFromWeakMap(m_id);
+            m_conn.clear();
+        }
+    }
+};
+
+}
+
+Connection::Connection(
+    const rtl::Reference< comphelper::RefCountedMutex > &refMutex,
+    const css::uno::Reference< css::uno::XComponentContext > & ctx )
+    : ConnectionBase( refMutex->GetMutex() ),
+      m_ctx( ctx ) ,
+      m_xMutex( refMutex )
+{
+}
+
+Connection::~Connection()
+{
+    if( m_settings.pConnection )
+    {
+        PQfinish( m_settings.pConnection );
+        m_settings.pConnection = nullptr;
+    }
+}
+
+void Connection::close()
+{
+    std::vector< css::uno::Reference< css::sdbc::XCloseable > > vectorCloseable;
+    std::vector< css::uno::Reference< css::lang::XComponent > > vectorDispose;
+    {
+        MutexGuard guard( m_xMutex->GetMutex() );
+        // silently ignore, if the connection has been closed already
+        if( m_settings.pConnection )
+        {
+            SAL_INFO("connectivity.postgresql", "closing connection");
+            PQfinish( m_settings.pConnection );
+            m_settings.pConnection = nullptr;
+        }
+
+        vectorDispose.push_back( Reference< XComponent > ( m_settings.users, UNO_QUERY ) );
+        vectorDispose.push_back( Reference< XComponent > ( m_settings.tables , UNO_QUERY ) );
+        vectorDispose.push_back( Reference< XComponent > ( m_meta, UNO_QUERY ) );
+        m_meta.clear();
+        m_settings.tables.clear();
+        m_settings.users.clear();
+
+        for (auto const& statement : m_myStatements)
+        {
+            Reference< XCloseable > r = statement.second;
+            if( r.is() )
+                vectorCloseable.push_back( r );
+        }
+    }
+
+    // close all created statements
+    for (auto const& elem : vectorCloseable)
+        elem->close();
+
+    // close all created statements
+    for (auto const& elem : vectorDispose)
+    {
+        if( elem.is() )
+            elem->dispose();
+    }
+}
+
+
+void Connection::removeFromWeakMap( const ::rtl::ByteSequence & id )
+{
+    // shrink the list !
+    MutexGuard guard( m_xMutex->GetMutex() );
+    WeakHashMap::iterator ii = m_myStatements.find( id );
+    if( ii != m_myStatements.end() )
+        m_myStatements.erase( ii );
+}
+
+Reference< XStatement > Connection::createStatement()
+{
+    MutexGuard guard( m_xMutex->GetMutex() );
+    checkClosed();
+
+    rtl::Reference<Statement> stmt = new Statement( m_xMutex, this , &m_settings );
+    ::rtl::ByteSequence id( 16 );
+    rtl_createUuid( reinterpret_cast<sal_uInt8*>(id.getArray()), nullptr, false );
+    m_myStatements[ id ] = Reference< XCloseable > ( stmt );
+    stmt->queryAdapter()->addReference( new ClosableReference( id, this ) );
+    return stmt;
+}
+
+Reference< XPreparedStatement > Connection::prepareStatement( const OUString& sql )
+{
+    MutexGuard guard( m_xMutex->GetMutex() );
+    checkClosed();
+
+    OString byteSql = OUStringToOString( sql, ConnectionSettings::encoding );
+    rtl::Reference<PreparedStatement> stmt
+        = new PreparedStatement( m_xMutex, this, &m_settings, byteSql );
+
+    ::rtl::ByteSequence id( 16 );
+    rtl_createUuid( reinterpret_cast<sal_uInt8*>(id.getArray()), nullptr, false );
+    m_myStatements[ id ] = Reference< XCloseable > ( stmt );
+    stmt->queryAdapter()->addReference( new ClosableReference( id, this ) );
+    return stmt;
+}
+
+Reference< XPreparedStatement > Connection::prepareCall( const OUString& )
+{
+    throw SQLException(
+        "pq_driver: Callable statements not supported",
+        Reference< XInterface > (), OUString() , 1, Any() );
+}
+
+
+OUString Connection::nativeSQL( const OUString& sql )
+{
+    return sql;
+}
+
+void Connection::setAutoCommit( sal_Bool )
+{
+    // UNSUPPORTED
+}
+
+sal_Bool Connection::getAutoCommit()
+{
+    // UNSUPPORTED
+    return true;
+}
+
+void Connection::commit()
+{
+    // UNSUPPORTED
+}
+
+void Connection::rollback()
+{
+    // UNSUPPORTED
+}
+
+sal_Bool Connection::isClosed()
+{
+    return m_settings.pConnection == nullptr;
+}
+
+Reference< XDatabaseMetaData > Connection::getMetaData()
+{
+    MutexGuard guard( m_xMutex->GetMutex() );
+    checkClosed();
+    if( ! m_meta.is() )
+        m_meta = new DatabaseMetaData( m_xMutex, this, &m_settings );
+    return m_meta;
+}
+
+void  Connection::setReadOnly( sal_Bool )
+{
+    // UNSUPPORTED
+
+}
+
+sal_Bool Connection::isReadOnly()
+{
+    // UNSUPPORTED
+    return false;
+}
+
+void Connection::setCatalog( const OUString& )
+{
+    // UNSUPPORTED
+}
+
+OUString Connection::getCatalog()
+{
+    MutexGuard guard( m_xMutex->GetMutex() );
+    if( m_settings.pConnection == nullptr )
+    {
+        throw SQLException( "pq_connection: connection is closed", *this,
+                            OUString(), 1, Any() );
+    }
+    char * p = PQdb(m_settings.pConnection );
+    return OUString( p, strlen(p) ,  ConnectionSettings::encoding );
+}
+
+void Connection::setTransactionIsolation( sal_Int32 )
+{
+    // UNSUPPORTED
+}
+
+sal_Int32 Connection::getTransactionIsolation()
+{
+    // UNSUPPORTED
+    return 0;
+}
+
+Reference< XNameAccess > Connection::getTypeMap()
+{
+    Reference< XNameAccess > t;
+    {
+        MutexGuard guard( m_xMutex->GetMutex() );
+        t = m_typeMap;
+    }
+    return t;
+}
+
+void Connection::setTypeMap( const Reference< XNameAccess >& typeMap )
+{
+    MutexGuard guard( m_xMutex->GetMutex() );
+    m_typeMap = typeMap;
+}
+Any Connection::getWarnings()
+{
+    return Any();
+}
+
+void Connection::clearWarnings()
+{
+}
+
+namespace {
+
+class cstr_vector
+{
+    std::vector<char*> values;
+    std::vector<bool>  acquired;
+public:
+    cstr_vector ()  { values.reserve(8); acquired.reserve(8); }
+    ~cstr_vector ()
+    {
+        OSL_ENSURE(values.size() == acquired.size(), "pq_connection: cstr_vector values and acquired size mismatch");
+        std::vector<bool>::const_iterator pa = acquired.begin();
+        for( const auto& v : values )
+        {
+            if (*pa)
+                free(v);
+            ++pa;
+        }
+    }
+    void push_back(const char* s, __sal_NoAcquire)
+    {
+        values.push_back(const_cast<char*>(s));
+        acquired.push_back(false);
+    }
+    void push_back(char* s)
+    {
+        values.push_back(s);
+        acquired.push_back(true);
+    }
+    // This const_cast is there for compatibility with PostgreSQL <= 9.1;
+    // PostgreSQL >= 9.2 has the right const qualifiers in the headers
+    // for a return type of "char const*const*".
+    char const** c_array() const { return const_cast <const char**>(values.data()); }
+};
+
+}
+
+static void properties2arrays( const Sequence< PropertyValue > & args,
+                               const Reference< XTypeConverter> &tc,
+                               rtl_TextEncoding enc,
+                               cstr_vector &keywords,
+                               cstr_vector &values)
+{
+    // LEM TODO: can we just blindly take all properties?
+    // I.e. they are prefiltered to have only relevant ones?
+    // Else, at least support all keywords from
+    // http://www.postgresql.org/docs/9.0/interactive/libpq-connect.html
+
+    static const char* keyword_list[] = {
+        "password",
+        "user",
+        "port",
+        "dbname",
+        "connect_timeout",
+        "options",
+        "requiressl"
+    };
+
+    for( PropertyValue const & prop : args )
+    {
+        bool append = false;
+        for(const char* j : keyword_list)
+        {
+            if( prop.Name.equalsIgnoreAsciiCaseAscii( j ))
+            {
+                keywords.push_back( j, SAL_NO_ACQUIRE );
+                append = true;
+                break;
+            }
+        }
+
+        if( append )
+        {
+            OUString value;
+            tc->convertTo( prop.Value, cppu::UnoType<decltype(value)>::get() ) >>= value;
+            char *v = strdup(OUStringToOString(value, enc).getStr());
+            values.push_back ( v );
+        }
+        else
+        {
+            // ignore for now
+            SAL_WARN("connectivity.postgresql", "sdbc-postgresql: unknown argument '" << prop.Name << "' having value: " << prop.Value );
+        }
+    }
+}
+
+void Connection::initialize( const Sequence< Any >& aArguments )
+{
+    OUString url;
+    Sequence< PropertyValue > args;
+
+    Reference< XTypeConverter > tc( Converter::create(m_ctx) );
+    if( ! tc.is() )
+    {
+        throw RuntimeException(
+            "pq_driver: Couldn't instantiate converter service" );
+    }
+    if( aArguments.getLength() != 2 )
+    {
+        throw IllegalArgumentException(
+            "pq_driver: expected 2 arguments, got " + OUString::number( aArguments.getLength( ) ),
+            Reference< XInterface > () , 0 );
+    }
+
+    if( ! (aArguments[0] >>= url) )
+    {
+        throw IllegalArgumentException(
+            "pq_driver: expected string as first argument, got "
+            + aArguments[0].getValueType().getTypeName(),
+            *this, 0 );
+    }
+
+    tc->convertTo( aArguments[1], cppu::UnoType<decltype(args)>::get() ) >>= args;
+
+    OString o;
+    int nColon = url.indexOf( ':' );
+    if( nColon != -1 )
+    {
+        nColon = url.indexOf( ':' , 1+ nColon );
+        if( nColon != -1 )
+        {
+             o = rtl::OUStringToOString( url.subView(nColon+1), ConnectionSettings::encoding );
+        }
+    }
+    {
+        cstr_vector keywords;
+        cstr_vector values;
+
+        if ( o.getLength() > 0 )
+        {
+            char *err;
+            const std::unique_ptr<PQconninfoOption, deleter_from_fn<PQconninfoFree>>
+                oOpts(PQconninfoParse(o.getStr(), &err));
+            if (oOpts == nullptr)
+            {
+                OUString errorMessage;
+                if ( err != nullptr)
+                {
+                    errorMessage = OUString( err, strlen(err), ConnectionSettings::encoding );
+                    PQfreemem(err);
+                }
+                else
+                    errorMessage = "#no error message#";
+                // HY092 is "Invalid attribute/option identifier."
+                // Just the most likely error; the error might be  HY024 "Invalid attribute value".
+                throw SQLException(
+                    "Error in database URL '" + url + "':\n"  + errorMessage,
+                    *this, "HY092", 5, Any() );
+            }
+
+            for (  PQconninfoOption * opt = oOpts.get(); opt->keyword != nullptr; ++opt)
+            {
+                if ( opt->val != nullptr )
+                {
+                    keywords.push_back(strdup(opt->keyword));
+                    values.push_back(strdup(opt->val));
+                }
+            }
+        }
+        properties2arrays( args , tc, ConnectionSettings::encoding, keywords, values );
+        keywords.push_back(nullptr, SAL_NO_ACQUIRE);
+        values.push_back(nullptr, SAL_NO_ACQUIRE);
+
+        m_settings.pConnection = PQconnectdbParams( keywords.c_array(), values.c_array(), 0 );
+    }
+    if( ! m_settings.pConnection )
+        throw RuntimeException("pq_driver: out of memory" );
+    if( PQstatus( m_settings.pConnection ) == CONNECTION_BAD )
+    {
+        const char * error = PQerrorMessage( m_settings.pConnection );
+        OUString errorMessage( error, strlen( error) , RTL_TEXTENCODING_ASCII_US );
+        PQfinish( m_settings.pConnection );
+        m_settings.pConnection = nullptr;
+        throw SQLException(
+            "Couldn't establish database connection to '" + url + "'\n"
+            + errorMessage,
+            *this, errorMessage, CONNECTION_BAD, Any() );
+    }
+    PQsetClientEncoding( m_settings.pConnection, "UNICODE" );
+    char *p = PQuser( m_settings.pConnection );
+    m_settings.user = OUString( p, strlen(p), RTL_TEXTENCODING_UTF8);
+    p = PQdb( m_settings.pConnection );
+    m_settings.catalog = OUString( p, strlen(p), RTL_TEXTENCODING_UTF8);
+    m_settings.tc = tc;
+
+    SAL_INFO("connectivity.postgresql", "connection to '" << url << "' successfully opened");
+}
+
+void Connection::disposing()
+{
+    close();
+}
+
+void Connection::checkClosed()
+{
+    if( !m_settings.pConnection )
+        throw SQLException( "pq_connection: Connection already closed",
+                            *this, OUString(), 1, Any() );
+}
+
+Reference< XNameAccess > Connection::getTables()
+{
+    SAL_INFO("connectivity.postgresql", "Connection::getTables() got called");
+    MutexGuard guard( m_xMutex->GetMutex() );
+    if( !m_settings.tables.is() )
+        m_settings.tables = Tables::create( m_xMutex, this, &m_settings , &m_settings.pTablesImpl);
+    else
+        // TODO: how to overcome the performance problem ?
+        Reference< css::util::XRefreshable > ( m_settings.tables, UNO_QUERY_THROW )->refresh();
+    return m_settings.tables;
+}
+
+Reference< XNameAccess > Connection::getViews()
+{
+    SAL_INFO("connectivity.postgresql", "Connection::getViews() got called");
+    MutexGuard guard( m_xMutex->GetMutex() );
+    if( !m_settings.views.is() )
+        m_settings.views = Views::create( m_xMutex, this, &m_settings, &(m_settings.pViewsImpl) );
+    else
+        // TODO: how to overcome the performance problem ?
+        Reference< css::util::XRefreshable > ( m_settings.views, UNO_QUERY_THROW )->refresh();
+    return m_settings.views;
+}
+
+
+Reference< XNameAccess > Connection::getUsers()
+{
+    SAL_INFO("connectivity.postgresql", "Connection::getUsers() got called");
+
+    MutexGuard guard( m_xMutex->GetMutex() );
+    if( !m_settings.users.is() )
+        m_settings.users = Users::create( m_xMutex, this, &m_settings );
+    return m_settings.users;
+}
+
+} // end namespace
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+connectivity_postgresql_Connection_get_implementation(
+    css::uno::XComponentContext* context , css::uno::Sequence<css::uno::Any> const&)
+{
+    ::rtl::Reference< comphelper::RefCountedMutex > ref = new comphelper::RefCountedMutex;
+    return cppu::acquire(new pq_sdbc_driver::Connection( ref, context ));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */