ucb/source/ucp/package/pkguri.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
  21 /**************************************************************************
  22                                 TODO
  23  **************************************************************************
  24
  25  *************************************************************************/
  26
  27 #include "rtl/ustrbuf.hxx"
  28 #include "osl/diagnose.h"
  29 #include "comphelper/storagehelper.hxx"
  30
  31 #include "../inc/urihelper.hxx"
  32
  33 #include "pkguri.hxx"
  34
  35 using namespace package_ucp;
  36
  37
  38
  39
  40
  41 // PackageUri Implementation.
  42
  43
  44
  45
  46 static void normalize( OUString& rURL )
  47 {
  48     sal_Int32 nPos = 0;
  49     do
  50     {
  51         nPos = rURL.indexOf( '%', nPos );
  52         if ( nPos != -1 )
  53         {
  54             if ( nPos < ( rURL.getLength() - 2 ) )
  55             {
  56                 OUString aTmp = rURL.copy( nPos + 1, 2 );
  57                 rURL = rURL.replaceAt( nPos + 1, 2, aTmp.toAsciiUpperCase() );
  58                 nPos++;
  59             }
  60         }
  61     }
  62     while ( nPos != -1 );
  63 }
  64
  65
  66 void PackageUri::init() const
  67 {
  68     // Already inited?
  69     if ( !m_aUri.isEmpty() && m_aPath.isEmpty() )
  70     {
  71         // Note: Maybe it's a re-init, setUri only resets m_aPath!
  72         m_aPackage.clear();
  73         m_aParentUri.clear();
  74         m_aName.clear();
  75         m_aParam.clear();
  76         m_aScheme.clear();
  77
  78         // URI must match at least: <sheme>://<non_empty_url_to_file>
  79         if ( ( m_aUri.getLength() < PACKAGE_URL_SCHEME_LENGTH + 4 ) )
  80         {
  81             // error, but remember that we did a init().
  82             m_aPath = "/";
  83             return;
  84         }
  85
  86         // Scheme must be followed by '://'
  87         if ( ( m_aUri[ PACKAGE_URL_SCHEME_LENGTH ] != ':' )
  88              ||
  89              ( m_aUri[ PACKAGE_URL_SCHEME_LENGTH + 1 ] != '/' )
  90              ||
  91              ( m_aUri[ PACKAGE_URL_SCHEME_LENGTH + 2 ] != '/' ) )
  92         {
  93             // error, but remember that we did a init().
  94             m_aPath = "/";
  95             return;
  96         }
  97
  98         OUString aPureUri;
  99         sal_Int32 nParam = m_aUri.indexOf( '?' );
 100         if( nParam >= 0 )
 101         {
 102             m_aParam = m_aUri.copy( nParam );
 103             aPureUri = m_aUri.copy( 0, nParam );
 104         }
 105         else
 106             aPureUri = m_aUri;
 107
 108         // Scheme is case insensitive.
 109         m_aScheme = aPureUri.copy(
 110             0, PACKAGE_URL_SCHEME_LENGTH ).toAsciiLowerCase();
 111
 112         if ( m_aScheme == PACKAGE_URL_SCHEME || m_aScheme == PACKAGE_ZIP_URL_SCHEME )
 113         {
 114             if ( m_aScheme == PACKAGE_ZIP_URL_SCHEME )
 115             {
 116                 m_aParam +=
 117                     ( !m_aParam.isEmpty()
 118                       ? OUString( "&purezip" )
 119                       : OUString( "?purezip" ) );
 120             }
 121
 122             aPureUri = aPureUri.replaceAt( 0,
 123                                            m_aScheme.getLength(),
 124                                            m_aScheme );
 125
 126             sal_Int32 nStart = PACKAGE_URL_SCHEME_LENGTH + 3;
 127             sal_Int32 nEnd   = aPureUri.lastIndexOf( '/' );
 128             if ( nEnd == PACKAGE_URL_SCHEME_LENGTH + 3 )
 129             {
 130                 // Only <scheme>:/// - Empty authority
 131
 132                 // error, but remember that we did a init().
 133                 m_aPath = "/";
 134                 return;
 135             }
 136             else if ( nEnd == ( aPureUri.getLength() - 1 ) )
 137             {
 138                 if ( aPureUri[ aPureUri.getLength() - 2 ] == '/' )
 139                 {
 140                     // Only <scheme>://// or <scheme>://<something>
 141
 142                     // error, but remember that we did a init().
 143                     m_aPath = "/";
 144                     return;
 145                 }
 146
 147                 // Remove trailing slash.
 148                 aPureUri = aPureUri.copy( 0, nEnd );
 149             }
 150
 151
 152             nEnd = aPureUri.indexOf( '/', nStart );
 153             if ( nEnd == -1 )
 154             {
 155                 // root folder.
 156
 157                 OUString aNormPackage = aPureUri.copy( nStart );
 158                 normalize( aNormPackage );
 159
 160                 aPureUri = aPureUri.replaceAt(
 161                     nStart, aPureUri.getLength() - nStart, aNormPackage );
 162                 m_aPackage
 163                     = ::ucb_impl::urihelper::decodeSegment( aNormPackage );
 164                 m_aPath = "/";
 165                 m_aUri = m_aUri.replaceAt( 0,
 166                                            ( nParam >= 0 )
 167                                            ? nParam
 168                                            : m_aUri.getLength(), aPureUri );
 169
 170                 sal_Int32 nLastSlash = m_aPackage.lastIndexOf( '/' );
 171                 if ( nLastSlash != -1 )
 172                     m_aName = ::ucb_impl::urihelper::decodeSegment(
 173                         m_aPackage.copy( nLastSlash + 1 ) );
 174                 else
 175                     m_aName
 176                         = ::ucb_impl::urihelper::decodeSegment( m_aPackage );
 177             }
 178             else
 179             {
 180                 m_aPath = aPureUri.copy( nEnd + 1 );
 181
 182                 // Unexpected sequences of characters:
 183                 // - empty path segments
 184                 // - encoded slashes
 185                 // - parent folder segments ".."
 186                 // - current folder segments "."
 187                 if ( m_aPath.indexOf( "//" ) != -1
 188                   || m_aPath.indexOf( "%2F" ) != -1
 189                   || m_aPath.indexOf( "%2f" ) != -1
 190                   || ::comphelper::OStorageHelper::PathHasSegment( m_aPath, OUString( ".." ) )
 191                   || ::comphelper::OStorageHelper::PathHasSegment( m_aPath, OUString( "." ) ) )
 192                 {
 193                     // error, but remember that we did a init().
 194                     m_aPath = "/";
 195                     return;
 196                 }
 197
 198                 OUString aNormPackage = aPureUri.copy( nStart, nEnd - nStart );
 199                 normalize( aNormPackage );
 200
 201                 aPureUri = aPureUri.replaceAt(
 202                     nStart, nEnd - nStart, aNormPackage );
 203                 aPureUri = aPureUri.replaceAt(
 204                     nEnd + 1,
 205                     aPureUri.getLength() - nEnd - 1,
 206                     ::ucb_impl::urihelper::encodeURI( m_aPath ) );
 207
 208                 m_aPackage
 209                     = ::ucb_impl::urihelper::decodeSegment( aNormPackage );
 210                 m_aPath = ::ucb_impl::urihelper::decodeSegment( m_aPath );
 211                 m_aUri = m_aUri.replaceAt( 0,
 212                                            ( nParam >= 0 )
 213                                            ? nParam
 214                                            : m_aUri.getLength(), aPureUri );
 215
 216                 sal_Int32 nLastSlash = aPureUri.lastIndexOf( '/' );
 217                 if ( nLastSlash != -1 )
 218                 {
 219                     m_aParentUri = aPureUri.copy( 0, nLastSlash );
 220                     m_aName = ::ucb_impl::urihelper::decodeSegment(
 221                         aPureUri.copy( nLastSlash + 1 ) );
 222                 }
 223             }
 224
 225             // success
 226             m_bValid = true;
 227         }
 228         else
 229         {
 230             // error, but remember that we did a init().
 231             m_aPath = "/";
 232         }
 233     }
 234 }
 235
 236 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */