xmlsecurity/source/helper/xmlsignaturehelper2.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <xmlsignaturehelper2.hxx>
  21
  22 #include <tools/solar.h>
  23 #include <unotools/streamhelper.hxx>
  24
  25 #include <com/sun/star/embed/XStorage.hpp>
  26 #include <com/sun/star/embed/ElementModes.hpp>
  27 #include <osl/diagnose.h>
  28 #include <rtl/uri.hxx>
  29 #include <sal/log.hxx>
  30
  31 using namespace com::sun::star;
  32
  33 // XUriBinding
  34
  35 UriBindingHelper::UriBindingHelper()
  36 {
  37 }
  38
  39 UriBindingHelper::UriBindingHelper( const css::uno::Reference < css::embed::XStorage >& rxStorage )
  40 {
  41     mxStorage = rxStorage;
  42 }
  43
  44 void SAL_CALL UriBindingHelper::setUriBinding( const OUString& /*uri*/, const uno::Reference< io::XInputStream >&)
  45 {
  46 }
  47
  48 uno::Reference< io::XInputStream > SAL_CALL UriBindingHelper::getUriBinding( const OUString& uri )
  49 {
  50     uno::Reference< io::XInputStream > xInputStream;
  51     if ( mxStorage.is() )
  52     {
  53         xInputStream = OpenInputStream( mxStorage, uri );
  54     }
  55     else
  56     {
  57         SvFileStream* pStream = new SvFileStream( uri, StreamMode::READ );
  58         sal_uInt64 nBytes = pStream->TellEnd();
  59         SvLockBytesRef xLockBytes = new SvLockBytes( pStream, true );
  60         xInputStream = new utl::OInputStreamHelper( xLockBytes, nBytes );
  61     }
  62     return xInputStream;
  63 }
  64
  65 uno::Reference < io::XInputStream > UriBindingHelper::OpenInputStream( const uno::Reference < embed::XStorage >& rxStore, const OUString& rURI )
  66 {
  67     OSL_ASSERT(!rURI.isEmpty());
  68     uno::Reference < io::XInputStream > xInStream;
  69
  70     OUString aURI(rURI);
  71     // Ignore leading slash, don't attempt to open a storage with name "".
  72     if (aURI.startsWith("/"))
  73         aURI = aURI.copy(1);
  74     // Ignore query part of the URI.
  75     sal_Int32 nQueryPos = aURI.indexOf('?');
  76     if (nQueryPos != -1)
  77         aURI = aURI.copy(0, nQueryPos);
  78
  79
  80     sal_Int32 nSepPos = aURI.indexOf( '/' );
  81     if ( nSepPos == -1 )
  82     {
  83         // Cloning because of I can't keep all storage references open
  84         // MBA with think about a better API...
  85         const OUString sName = ::rtl::Uri::decode(
  86             aURI, rtl_UriDecodeStrict, rtl_UriCharClassRelSegment);
  87         if (sName.isEmpty() && !aURI.isEmpty())
  88             throw uno::Exception("Could not decode URI for stream element.", nullptr);
  89
  90         uno::Reference< io::XStream > xStream;
  91         if (!rxStore->hasByName(sName))
  92             SAL_WARN("xmlsecurity.helper", "expected stream, but not found: " << sName);
  93         else
  94             xStream = rxStore->cloneStreamElement( sName );
  95         if ( !xStream.is() )
  96             throw uno::RuntimeException();
  97         xInStream = xStream->getInputStream();
  98     }
  99     else
 100     {
 101         const OUString aStoreName = ::rtl::Uri::decode(
 102             aURI.copy( 0, nSepPos ), rtl_UriDecodeStrict, rtl_UriCharClassRelSegment);
 103         if (aStoreName.isEmpty() && !aURI.isEmpty())
 104             throw uno::Exception("Could not decode URI for stream element.", nullptr);
 105
 106         OUString aElement = aURI.copy( nSepPos+1 );
 107         uno::Reference < embed::XStorage > xSubStore = rxStore->openStorageElement( aStoreName, embed::ElementModes::READ );
 108         xInStream = OpenInputStream( xSubStore, aElement );
 109     }
 110     return xInStream;
 111 }
 112
 113 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */