diff options
Diffstat (limited to 'ucb/source/ucp/webdav-neon/DAVResourceAccess.cxx')
| -rw-r--r-- | ucb/source/ucp/webdav-neon/DAVResourceAccess.cxx | 1192 |
1 files changed, 1192 insertions, 0 deletions
diff --git a/ucb/source/ucp/webdav-neon/DAVResourceAccess.cxx b/ucb/source/ucp/webdav-neon/DAVResourceAccess.cxx new file mode 100644 index 000000000..f0576e049 --- /dev/null +++ b/ucb/source/ucp/webdav-neon/DAVResourceAccess.cxx @@ -0,0 +1,1192 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + + +#include <com/sun/star/io/IOException.hpp> +#include <com/sun/star/lang/IllegalArgumentException.hpp> +#include <com/sun/star/task/XInteractionAbort.hpp> +#include <com/sun/star/ucb/XWebDAVCommandEnvironment.hpp> + +#include <ucbhelper/simpleauthenticationrequest.hxx> +#include <comphelper/seekableinput.hxx> + +#include "DAVAuthListenerImpl.hxx" +#include "DAVResourceAccess.hxx" + +using namespace webdav_ucp; +using namespace com::sun::star; + + +// DAVAuthListener_Impl Implementation. + +static constexpr sal_uInt32 g_nRedirectLimit = 5; + +// virtual +int DAVAuthListener_Impl::authenticate( + const OUString & inRealm, + const OUString & inHostName, + OUString & inoutUserName, + OUString & outPassWord, + bool bCanUseSystemCredentials ) +{ + if ( m_xEnv.is() ) + { + uno::Reference< task::XInteractionHandler > xIH + = m_xEnv->getInteractionHandler(); + + if ( xIH.is() ) + { + // #102871# - Supply username and password from previous try. + // Password container service depends on this! + if ( inoutUserName.isEmpty() ) + inoutUserName = m_aPrevUsername; + + if ( outPassWord.isEmpty() ) + outPassWord = m_aPrevPassword; + + rtl::Reference< ucbhelper::SimpleAuthenticationRequest > xRequest + = new ucbhelper::SimpleAuthenticationRequest( + m_aURL, inHostName, inRealm, inoutUserName, + outPassWord, bCanUseSystemCredentials ); + xIH->handle( xRequest.get() ); + + rtl::Reference< ucbhelper::InteractionContinuation > xSelection + = xRequest->getSelection(); + + if ( xSelection.is() ) + { + // Handler handled the request. + uno::Reference< task::XInteractionAbort > xAbort( + xSelection.get(), uno::UNO_QUERY ); + if ( !xAbort.is() ) + { + const rtl::Reference< + ucbhelper::InteractionSupplyAuthentication > & xSupp + = xRequest->getAuthenticationSupplier(); + + bool bUseSystemCredentials = false; + + if ( bCanUseSystemCredentials ) + bUseSystemCredentials + = xSupp->getUseSystemCredentials(); + + if ( bUseSystemCredentials ) + { + // This is the (strange) way to tell neon to use + // system credentials. + inoutUserName.clear(); + outPassWord.clear(); + } + else + { + inoutUserName = xSupp->getUserName(); + outPassWord = xSupp->getPassword(); + } + + // #102871# - Remember username and password. + m_aPrevUsername = inoutUserName; + m_aPrevPassword = outPassWord; + + // go on. + return 0; + } + } + } + } + // Abort. + return -1; +} + + +// DAVResourceAccess Implementation. + + +DAVResourceAccess::DAVResourceAccess( + const uno::Reference< uno::XComponentContext > & rxContext, + rtl::Reference< DAVSessionFactory > const & rSessionFactory, + const OUString & rURL ) +: m_aURL( rURL ), + m_xSessionFactory( rSessionFactory ), + m_xContext( rxContext ) +{ +} + + +DAVResourceAccess::DAVResourceAccess( const DAVResourceAccess & rOther ) +: m_aURL( rOther.m_aURL ), + m_aPath( rOther.m_aPath ), + m_aFlags( rOther.m_aFlags ), + m_xSession( rOther.m_xSession ), + m_xSessionFactory( rOther.m_xSessionFactory ), + m_xContext( rOther.m_xContext ), + m_aRedirectURIs( rOther.m_aRedirectURIs ) +{ +} + + +DAVResourceAccess & DAVResourceAccess::operator=( + const DAVResourceAccess & rOther ) +{ + m_aURL = rOther.m_aURL; + m_aPath = rOther.m_aPath; + m_aFlags = rOther.m_aFlags; + m_xSession = rOther.m_xSession; + m_xSessionFactory = rOther.m_xSessionFactory; + m_xContext = rOther.m_xContext; + m_aRedirectURIs = rOther.m_aRedirectURIs; + + return *this; +} + +void DAVResourceAccess::OPTIONS( + DAVOptions & rOptions, + const css::uno::Reference< + css::ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + + getUserRequestHeaders( xEnv, + getRequestURI(), + css::ucb::WebDAVHTTPMethod_OPTIONS, + aHeaders ); + + m_xSession->OPTIONS( getRequestURI(), + rOptions, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + +void DAVResourceAccess::PROPFIND( + const Depth nDepth, + const std::vector< OUString > & rPropertyNames, + std::vector< DAVResource > & rResources, + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_PROPFIND, + aHeaders ); + + m_xSession->PROPFIND( getRequestURI(), + nDepth, + rPropertyNames, + rResources, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +void DAVResourceAccess::PROPFIND( + const Depth nDepth, + std::vector< DAVResourceInfo > & rResInfo, + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_PROPFIND, + aHeaders ); + + m_xSession->PROPFIND( getRequestURI(), + nDepth, + rResInfo, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ) ; + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +void DAVResourceAccess::PROPPATCH( + const std::vector< ProppatchValue >& rValues, + const uno::Reference< ucb::XCommandEnvironment >& xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_PROPPATCH, + aHeaders ); + + m_xSession->PROPPATCH( getRequestURI(), + rValues, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +void DAVResourceAccess::HEAD( + const std::vector< OUString > & rHeaderNames, + DAVResource & rResource, + const uno::Reference< ucb::XCommandEnvironment >& xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_HEAD, + aHeaders ); + + m_xSession->HEAD( getRequestURI(), + rHeaderNames, + rResource, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +uno::Reference< io::XInputStream > DAVResourceAccess::GET( + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + uno::Reference< io::XInputStream > xStream; + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_GET, + aHeaders ); + + xStream = m_xSession->GET( getRequestURI(), + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( + xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); + + return xStream; +} + + +void DAVResourceAccess::GET( + uno::Reference< io::XOutputStream > & rStream, + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_GET, + aHeaders ); + + m_xSession->GET( getRequestURI(), + rStream, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + +uno::Reference< io::XInputStream > DAVResourceAccess::GET( + const std::vector< OUString > & rHeaderNames, + DAVResource & rResource, + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + uno::Reference< io::XInputStream > xStream; + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_GET, + aHeaders ); + + xStream = m_xSession->GET( getRequestURI(), + rHeaderNames, + rResource, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( + xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); + + return xStream; +} + +// used as HEAD substitute when HEAD is not implemented on server +void DAVResourceAccess::GET0( + DAVRequestHeaders &rRequestHeaders, + const std::vector< OUString > & rHeaderNames, + DAVResource & rResource, + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_GET, + rRequestHeaders ); + + m_xSession->GET0( getRequestURI(), + rHeaderNames, + rResource, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( + xEnv, m_aURL ), + rRequestHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +void DAVResourceAccess::GET( + uno::Reference< io::XOutputStream > & rStream, + const std::vector< OUString > & rHeaderNames, + DAVResource & rResource, + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + bool bRetry; + int errorCount = 0; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_GET, + aHeaders ); + + m_xSession->GET( getRequestURI(), + rStream, + rHeaderNames, + rResource, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +void DAVResourceAccess::abort() +{ + initialize(); + m_xSession->abort(); +} + + +namespace { + + /// @throws DAVException + void resetInputStream( const uno::Reference< io::XInputStream > & rStream ) + { + try + { + uno::Reference< io::XSeekable > xSeekable( + rStream, uno::UNO_QUERY ); + if ( xSeekable.is() ) + { + xSeekable->seek( 0 ); + return; + } + } + catch ( lang::IllegalArgumentException const & ) + { + } + catch ( io::IOException const & ) + { + } + + throw DAVException( DAVException::DAV_INVALID_ARG ); + } + +} // namespace + + +void DAVResourceAccess::PUT( + const uno::Reference< io::XInputStream > & rStream, + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + // Make stream seekable, if it not. Needed, if request must be retried. + uno::Reference< io::XInputStream > xSeekableStream + = comphelper::OSeekableInputWrapper::CheckSeekableCanWrap( + rStream, m_xContext ); + + int errorCount = 0; + bool bRetry = false; + do + { + if ( bRetry ) + resetInputStream( xSeekableStream ); + + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_PUT, + aHeaders ); + + m_xSession->PUT( getRequestURI(), + xSeekableStream, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +uno::Reference< io::XInputStream > DAVResourceAccess::POST( + const OUString & rContentType, + const OUString & rReferer, + const uno::Reference< io::XInputStream > & rInputStream, + const uno::Reference< ucb::XCommandEnvironment >& xEnv ) +{ + initialize(); + + // Make stream seekable, if it not. Needed, if request must be retried. + uno::Reference< io::XInputStream > xSeekableStream + = comphelper::OSeekableInputWrapper::CheckSeekableCanWrap( + rInputStream, m_xContext ); + + uno::Reference< io::XInputStream > xStream; + int errorCount = 0; + bool bRetry = false; + do + { + if ( bRetry ) + { + resetInputStream( xSeekableStream ); + bRetry = false; + } + + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_POST, + aHeaders ); + + xStream = m_xSession->POST( getRequestURI(), + rContentType, + rReferer, + xSeekableStream, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( + xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + + if ( e.getError() == DAVException::DAV_HTTP_REDIRECT ) + { + // #i74980# - Upon POST redirect, do a GET. + return GET( xEnv ); + } + } + } + while ( bRetry ); + + return xStream; +} + + +void DAVResourceAccess::POST( + const OUString & rContentType, + const OUString & rReferer, + const uno::Reference< io::XInputStream > & rInputStream, + uno::Reference< io::XOutputStream > & rOutputStream, + const uno::Reference< ucb::XCommandEnvironment >& xEnv ) +{ + initialize(); + + // Make stream seekable, if it not. Needed, if request must be retried. + uno::Reference< io::XInputStream > xSeekableStream + = comphelper::OSeekableInputWrapper::CheckSeekableCanWrap( + rInputStream, m_xContext ); + + int errorCount = 0; + bool bRetry = false; + do + { + if ( bRetry ) + { + resetInputStream( xSeekableStream ); + bRetry = false; + } + + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_POST, + aHeaders ); + + m_xSession->POST( getRequestURI(), + rContentType, + rReferer, + xSeekableStream, + rOutputStream, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + + if ( e.getError() == DAVException::DAV_HTTP_REDIRECT ) + { + // #i74980# - Upon POST redirect, do a GET. + GET( rOutputStream, xEnv ); + return; + } + } + } + while ( bRetry ); +} + + +void DAVResourceAccess::MKCOL( + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_MKCOL, + aHeaders ); + + m_xSession->MKCOL( getRequestURI(), + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +void DAVResourceAccess::COPY( + const OUString & rSourcePath, + const OUString & rDestinationURI, + bool bOverwrite, + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_COPY, + aHeaders ); + + m_xSession->COPY( rSourcePath, + rDestinationURI, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ), + bOverwrite ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +void DAVResourceAccess::MOVE( + const OUString & rSourcePath, + const OUString & rDestinationURI, + bool bOverwrite, + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_MOVE, + aHeaders ); + + m_xSession->MOVE( rSourcePath, + rDestinationURI, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ), + bOverwrite ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +void DAVResourceAccess::DESTROY( + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_DELETE, + aHeaders ); + + m_xSession->DESTROY( getRequestURI(), + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +// set new lock. +void DAVResourceAccess::LOCK( + ucb::Lock & inLock, + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_LOCK, + aHeaders ); + + m_xSession->LOCK( getRequestURI(), + inLock, + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + +void DAVResourceAccess::UNLOCK( + const uno::Reference< ucb::XCommandEnvironment > & xEnv ) +{ + initialize(); + + int errorCount = 0; + bool bRetry; + do + { + bRetry = false; + try + { + DAVRequestHeaders aHeaders; + getUserRequestHeaders( xEnv, + getRequestURI(), + ucb::WebDAVHTTPMethod_UNLOCK, + aHeaders ); + + m_xSession->UNLOCK( getRequestURI(), + DAVRequestEnvironment( + getRequestURI(), + new DAVAuthListener_Impl( xEnv, m_aURL ), + aHeaders, xEnv ) ); + } + catch ( const DAVException & e ) + { + errorCount++; + bRetry = handleException( e, errorCount ); + if ( !bRetry ) + throw; + } + } + while ( bRetry ); +} + + +void DAVResourceAccess::setFlags( const uno::Sequence< beans::NamedValue >& rFlags ) +{ + osl::Guard< osl::Mutex > aGuard( m_aMutex ); + m_aFlags = rFlags; +} + + +void DAVResourceAccess::setURL( const OUString & rNewURL ) +{ + osl::Guard< osl::Mutex > aGuard( m_aMutex ); + m_aURL = rNewURL; + m_aPath.clear(); // Next initialize() will create new session. +} + + +// init dav session and path +void DAVResourceAccess::initialize() +{ + osl::Guard< osl::Mutex > aGuard( m_aMutex ); + if ( m_aPath.isEmpty() ) + { + NeonUri aURI( m_aURL ); + const OUString& aPath( aURI.GetPath() ); + + /* #134089# - Check URI */ + if ( aPath.isEmpty() ) + throw DAVException( DAVException::DAV_INVALID_ARG ); + + /* #134089# - Check URI */ + if ( aURI.GetHost().isEmpty() ) + throw DAVException( DAVException::DAV_INVALID_ARG ); + + if ( !m_xSession.is() || !m_xSession->CanUse( m_aURL, m_aFlags ) ) + { + m_xSession.clear(); + + // create new webdav session + m_xSession + = m_xSessionFactory->createDAVSession( m_aURL, m_aFlags, m_xContext ); + + if ( !m_xSession.is() ) + return; + } + + // Own URI is needed to redirect cycle detection. + m_aRedirectURIs.push_back( aURI ); + + // Success. + m_aPath = aPath; + + // Not only the path has to be encoded + m_aURL = aURI.GetURI(); + } +} + + +const OUString & DAVResourceAccess::getRequestURI() const +{ + assert( m_xSession.is() && "DAVResourceAccess::getRequestURI - Not initialized!" ); + + // In case a proxy is used we have to use the absolute URI for a request. + if ( m_xSession->UsesProxy() ) + return m_aURL; + + return m_aPath; +} + + +// static +void DAVResourceAccess::getUserRequestHeaders( + const uno::Reference< ucb::XCommandEnvironment > & xEnv, + const OUString & rURI, + ucb::WebDAVHTTPMethod eMethod, + DAVRequestHeaders & rRequestHeaders ) +{ + if ( xEnv.is() ) + { + uno::Reference< ucb::XWebDAVCommandEnvironment > xDAVEnv( + xEnv, uno::UNO_QUERY ); + + if ( xDAVEnv.is() ) + { + const uno::Sequence< beans::StringPair > aRequestHeaders + = xDAVEnv->getUserRequestHeaders( rURI, eMethod ); + + for ( const auto& rRequestHeader : aRequestHeaders ) + { + rRequestHeaders.emplace_back( + rRequestHeader.First, + rRequestHeader.Second ); + } + } + } + + // Make sure a User-Agent header is always included, as at least + // en.wikipedia.org:80 forces back 403 "Scripts should use an informative + // User-Agent string with contact information, or they may be IP-blocked + // without notice" otherwise: + if ( std::any_of(rRequestHeaders.begin(), rRequestHeaders.end(), + [](const DAVRequestHeader& rHeader) { return rHeader.first.equalsIgnoreAsciiCase( "User-Agent" ); }) ) + { + return; + } + rRequestHeaders.emplace_back( "User-Agent", "LibreOffice" ); +} + +// This function member implements the control on cyclical redirections +bool DAVResourceAccess::detectRedirectCycle( + const OUString& rRedirectURL ) +{ + osl::Guard< osl::Mutex > aGuard( m_aMutex ); + + NeonUri aUri( rRedirectURL ); + + // Check for maximum number of redirections + // according to <https://tools.ietf.org/html/rfc7231#section-6.4>. + // A practical limit may be 5, due to earlier specifications: + // <https://tools.ietf.org/html/rfc2068#section-10.3> + // it can be raised keeping in mind the added net activity. + if( static_cast< size_t >( g_nRedirectLimit ) <= m_aRedirectURIs.size() ) + return true; + + // try to detect a cyclical redirection + return std::any_of(m_aRedirectURIs.begin(), m_aRedirectURIs.end(), + [&aUri](const NeonUri& rUri) { + // if equal, cyclical redirection detected + return aUri == rUri; }); +} + + +void DAVResourceAccess::resetUri() +{ + osl::Guard< osl::Mutex > aGuard( m_aMutex ); + if ( !m_aRedirectURIs.empty() ) + { + std::vector< NeonUri >::const_iterator it = m_aRedirectURIs.begin(); + + NeonUri aUri( *it ); + m_aRedirectURIs.clear(); + setURL ( aUri.GetURI() ); + initialize(); + } +} + + +bool DAVResourceAccess::handleException( const DAVException & e, int errorCount ) +{ + switch ( e.getError() ) + { + case DAVException::DAV_HTTP_REDIRECT: + if ( !detectRedirectCycle( e.getData() ) ) + { + // set new URL and path. + setURL( e.getData() ); + initialize(); + return true; + } + return false; + // #67048# copy & paste images doesn't display. This bug refers + // to an old OOo problem about getting resources from sites with a bad connection. + // If we have a bad connection try again. Up to three times. + case DAVException::DAV_HTTP_ERROR: + // retry up to three times, if not a client-side error (4xx error codes) + if ( e.getStatus() < SC_BAD_REQUEST && errorCount < 3 ) + return true; + // check the server side errors + switch( e.getStatus() ) + { + // the HTTP server side response status codes that can be retried + case SC_BAD_GATEWAY: // retry, can be an excessive load + case SC_GATEWAY_TIMEOUT: // retry, may be we get lucky + case SC_SERVICE_UNAVAILABLE: // retry, the service may become available + case SC_INSUFFICIENT_STORAGE: // space may be freed, retry + { + return errorCount < 3; + } + break; + // all the other HTTP server response status codes are NOT retry + default: + return false; + } + break; + // if connection has said retry then retry! + case DAVException::DAV_HTTP_RETRY: + return true; + default: + return false; // Abort + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |