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|
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: permissions.cxx,v $
* $Revision: 1.11.16.1 $
*
* 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.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_stoc.hxx"
#include <vector>
#include <osl/process.h>
#include <osl/socket.hxx>
#include <osl/mutex.hxx>
#include <rtl/string.hxx>
#include <rtl/ustrbuf.hxx>
#include <com/sun/star/security/RuntimePermission.hpp>
#include <com/sun/star/security/AllPermission.hpp>
#include <com/sun/star/io/FilePermission.hpp>
#include <com/sun/star/connection/SocketPermission.hpp>
#include <com/sun/star/security/AccessControlException.hpp>
#include "permissions.h"
#define OUSTR(x) ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(x) )
using namespace ::std;
using namespace ::osl;
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using ::rtl::OUString;
using ::rtl::OUStringBuffer;
namespace stoc_sec
{
//--------------------------------------------------------------------------------------------------
static inline sal_Int32 makeMask(
OUString const & items, char const * const * strings ) SAL_THROW( () )
{
sal_Int32 mask = 0;
sal_Int32 n = 0;
do
{
OUString item( items.getToken( 0, ',', n ).trim() );
if (! item.getLength())
continue;
sal_Int32 nPos = 0;
while (strings[ nPos ])
{
if (item.equalsAscii( strings[ nPos ] ))
{
mask |= (0x80000000 >> nPos);
break;
}
++nPos;
}
#if OSL_DEBUG_LEVEL > 0
if (! strings[ nPos ])
{
OUStringBuffer buf( 48 );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("### ignoring unknown socket action: ") );
buf.append( item );
::rtl::OString str( ::rtl::OUStringToOString(
buf.makeStringAndClear(), RTL_TEXTENCODING_ASCII_US ) );
OSL_TRACE( str.getStr() );
}
#endif
}
while (n >= 0); // all items
return mask;
}
//--------------------------------------------------------------------------------------------------
static inline OUString makeStrings(
sal_Int32 mask, char const * const * strings ) SAL_THROW( () )
{
OUStringBuffer buf( 48 );
while (mask)
{
if (0x80000000 & mask)
{
buf.appendAscii( *strings );
if (mask << 1) // more items following
buf.append( (sal_Unicode)',' );
}
mask = (mask << 1);
++strings;
}
return buf.makeStringAndClear();
}
//##################################################################################################
//==================================================================================================
class SocketPermission : public Permission
{
static char const * s_actions [];
sal_Int32 m_actions;
OUString m_host;
sal_Int32 m_lowerPort;
sal_Int32 m_upperPort;
mutable OUString m_ip;
mutable bool m_resolveErr;
mutable bool m_resolvedHost;
bool m_wildCardHost;
inline bool resolveHost() const SAL_THROW( () );
public:
SocketPermission(
connection::SocketPermission const & perm,
::rtl::Reference< Permission > const & next = ::rtl::Reference< Permission >() )
SAL_THROW( () );
virtual bool implies( Permission const & perm ) const SAL_THROW( () );
virtual OUString toString() const SAL_THROW( () );
};
//__________________________________________________________________________________________________
char const * SocketPermission::s_actions [] = { "accept", "connect", "listen", "resolve", 0 };
//__________________________________________________________________________________________________
SocketPermission::SocketPermission(
connection::SocketPermission const & perm,
::rtl::Reference< Permission > const & next )
SAL_THROW( () )
: Permission( SOCKET, next )
, m_actions( makeMask( perm.Actions, s_actions ) )
, m_host( perm.Host )
, m_lowerPort( 0 )
, m_upperPort( 65535 )
, m_resolveErr( false )
, m_resolvedHost( false )
, m_wildCardHost( perm.Host.getLength() && '*' == perm.Host.pData->buffer[ 0 ] )
{
if (0xe0000000 & m_actions) // if any (except resolve) is given => resolve implied
m_actions |= 0x10000000;
// separate host from portrange
sal_Int32 colon = m_host.indexOf( ':' );
if (colon >= 0) // port [range] given
{
sal_Int32 minus = m_host.indexOf( '-', colon +1 );
if (minus < 0)
{
m_lowerPort = m_upperPort = m_host.copy( colon +1 ).toInt32();
}
else if (minus == (colon +1)) // -N
{
m_upperPort = m_host.copy( minus +1 ).toInt32();
}
else if (minus == (m_host.getLength() -1)) // N-
{
m_lowerPort = m_host.copy( colon +1, m_host.getLength() -1 -colon -1 ).toInt32();
}
else // A-B
{
m_lowerPort = m_host.copy( colon +1, minus - colon -1 ).toInt32();
m_upperPort = m_host.copy( minus +1, m_host.getLength() -minus -1 ).toInt32();
}
m_host = m_host.copy( 0, colon );
}
}
//__________________________________________________________________________________________________
inline bool SocketPermission::resolveHost() const SAL_THROW( () )
{
if (m_resolveErr)
return false;
if (! m_resolvedHost)
{
// dns lookup
SocketAddr addr;
SocketAddr::resolveHostname( m_host, addr );
OUString ip;
m_resolveErr = (::osl_Socket_Ok != ::osl_getDottedInetAddrOfSocketAddr(
addr.getHandle(), &ip.pData ));
if (m_resolveErr)
return false;
MutexGuard guard( Mutex::getGlobalMutex() );
if (! m_resolvedHost)
{
m_ip = ip;
m_resolvedHost = true;
}
}
return m_resolvedHost;
}
//__________________________________________________________________________________________________
bool SocketPermission::implies( Permission const & perm ) const SAL_THROW( () )
{
// check type
if (SOCKET != perm.m_type)
return false;
SocketPermission const & demanded = static_cast< SocketPermission const & >( perm );
// check actions
if ((m_actions & demanded.m_actions) != demanded.m_actions)
return false;
// check ports
if (demanded.m_lowerPort < m_lowerPort)
return false;
if (demanded.m_upperPort > m_upperPort)
return false;
// quick check host (DNS names: RFC 1034/1035)
if (m_host.equalsIgnoreAsciiCase( demanded.m_host ))
return true;
// check for host wildcards
if (m_wildCardHost)
{
OUString const & demanded_host = demanded.m_host;
if (demanded_host.getLength() <= m_host.getLength())
return false;
sal_Int32 len = m_host.getLength() -1; // skip star
return (0 == ::rtl_ustr_compareIgnoreAsciiCase_WithLength(
demanded_host.getStr() + demanded_host.getLength() - len, len,
m_host.pData->buffer + 1, len ));
}
if (demanded.m_wildCardHost)
return false;
// compare IP addresses
if (! resolveHost())
return false;
if (! demanded.resolveHost())
return false;
return (sal_False != m_ip.equals( demanded.m_ip ));
}
//__________________________________________________________________________________________________
OUString SocketPermission::toString() const SAL_THROW( () )
{
OUStringBuffer buf( 48 );
// host
buf.appendAscii(
RTL_CONSTASCII_STRINGPARAM("com.sun.star.connection.SocketPermission (host=\"") );
buf.append( m_host );
if (m_resolvedHost)
{
buf.append( (sal_Unicode)'[' );
buf.append( m_ip );
buf.append( (sal_Unicode)']' );
}
// port
if (0 != m_lowerPort || 65535 != m_upperPort)
{
buf.append( (sal_Unicode)':' );
if (m_lowerPort > 0)
buf.append( m_lowerPort );
if (m_upperPort > m_lowerPort)
{
buf.append( (sal_Unicode)'-' );
if (m_upperPort < 65535)
buf.append( m_upperPort );
}
}
// actions
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("\", actions=\"") );
buf.append( makeStrings( m_actions, s_actions ) );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("\")") );
return buf.makeStringAndClear();
}
//##################################################################################################
//==================================================================================================
class FilePermission : public Permission
{
static char const * s_actions [];
sal_Int32 m_actions;
OUString m_url;
bool m_allFiles;
public:
FilePermission(
io::FilePermission const & perm,
::rtl::Reference< Permission > const & next = ::rtl::Reference< Permission >() )
SAL_THROW( () );
virtual bool implies( Permission const & perm ) const SAL_THROW( () );
virtual OUString toString() const SAL_THROW( () );
};
//__________________________________________________________________________________________________
char const * FilePermission::s_actions [] = { "read", "write", "execute", "delete", 0 };
//--------------------------------------------------------------------------------------------------
static OUString const & getWorkingDir() SAL_THROW( () )
{
static OUString * s_workingDir = 0;
if (! s_workingDir)
{
OUString workingDir;
::osl_getProcessWorkingDir( &workingDir.pData );
MutexGuard guard( Mutex::getGlobalMutex() );
if (! s_workingDir)
{
static OUString s_dir( workingDir );
s_workingDir = &s_dir;
}
}
return *s_workingDir;
}
//__________________________________________________________________________________________________
FilePermission::FilePermission(
io::FilePermission const & perm,
::rtl::Reference< Permission > const & next )
SAL_THROW( () )
: Permission( FILE, next )
, m_actions( makeMask( perm.Actions, s_actions ) )
, m_url( perm.URL )
, m_allFiles( sal_False != perm.URL.equalsAsciiL(RTL_CONSTASCII_STRINGPARAM("<<ALL FILES>>")) )
{
if (! m_allFiles)
{
if (m_url.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM("*") ))
{
OUStringBuffer buf( 64 );
buf.append( getWorkingDir() );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("/*") );
m_url = buf.makeStringAndClear();
}
else if (m_url.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM("-") ))
{
OUStringBuffer buf( 64 );
buf.append( getWorkingDir() );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("/-") );
m_url = buf.makeStringAndClear();
}
else if (0 != m_url.compareToAscii( RTL_CONSTASCII_STRINGPARAM("file:///") ))
{
// relative path
OUString out;
oslFileError rc = ::osl_getAbsoluteFileURL(
getWorkingDir().pData, perm.URL.pData, &out.pData );
m_url = (osl_File_E_None == rc ? out : perm.URL); // fallback
}
#ifdef SAL_W32
// correct win drive letters
if (9 < m_url.getLength() && '|' == m_url[ 9 ]) // file:///X|
{
static OUString s_colon = OUSTR(":");
// common case in API is a ':' (sal), so convert '|' to ':'
m_url = m_url.replaceAt( 9, 1, s_colon );
}
#endif
}
}
//__________________________________________________________________________________________________
bool FilePermission::implies( Permission const & perm ) const SAL_THROW( () )
{
// check type
if (FILE != perm.m_type)
return false;
FilePermission const & demanded = static_cast< FilePermission const & >( perm );
// check actions
if ((m_actions & demanded.m_actions) != demanded.m_actions)
return false;
// check url
if (m_allFiles)
return true;
if (demanded.m_allFiles)
return false;
#ifdef SAL_W32
if (m_url.equalsIgnoreAsciiCase( demanded.m_url ))
return true;
#else
if (m_url.equals( demanded.m_url ))
return true;
#endif
if (m_url.getLength() > demanded.m_url.getLength())
return false;
// check /- wildcard: all files and recursive in that path
if (1 < m_url.getLength() &&
0 == ::rtl_ustr_ascii_compare_WithLength( m_url.getStr() + m_url.getLength() - 2, 2, "/-" ))
{
// demanded url must start with granted path (including path trailing path sep)
sal_Int32 len = m_url.getLength() -1;
#ifdef SAL_W32
return (0 == ::rtl_ustr_compareIgnoreAsciiCase_WithLength(
demanded.m_url.pData->buffer, len, m_url.pData->buffer, len ));
#else
return (0 == ::rtl_ustr_reverseCompare_WithLength(
demanded.m_url.pData->buffer, len, m_url.pData->buffer, len ));
#endif
}
// check /* wildcard: all files in that path (not recursive!)
if (1 < m_url.getLength() &&
0 == ::rtl_ustr_ascii_compare_WithLength( m_url.getStr() + m_url.getLength() - 2, 2, "/*" ))
{
// demanded url must start with granted path (including path trailing path sep)
sal_Int32 len = m_url.getLength() -1;
#ifdef SAL_W32
return ((0 == ::rtl_ustr_compareIgnoreAsciiCase_WithLength(
demanded.m_url.pData->buffer, len, m_url.pData->buffer, len )) &&
(0 > demanded.m_url.indexOf( '/', len ))); // in addition, no deeper pathes
#else
return ((0 == ::rtl_ustr_reverseCompare_WithLength(
demanded.m_url.pData->buffer, len, m_url.pData->buffer, len )) &&
(0 > demanded.m_url.indexOf( '/', len ))); // in addition, no deeper pathes
#endif
}
return false;
}
//__________________________________________________________________________________________________
OUString FilePermission::toString() const SAL_THROW( () )
{
OUStringBuffer buf( 48 );
// url
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("com.sun.star.io.FilePermission (url=\"") );
buf.append( m_url );
// actions
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("\", actions=\"") );
buf.append( makeStrings( m_actions, s_actions ) );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("\")") );
return buf.makeStringAndClear();
}
//##################################################################################################
//==================================================================================================
class RuntimePermission : public Permission
{
OUString m_name;
public:
inline RuntimePermission(
security::RuntimePermission const & perm,
::rtl::Reference< Permission > const & next = ::rtl::Reference< Permission >() )
SAL_THROW( () )
: Permission( RUNTIME, next )
, m_name( perm.Name )
{}
virtual bool implies( Permission const & perm ) const SAL_THROW( () );
virtual OUString toString() const SAL_THROW( () );
};
//__________________________________________________________________________________________________
bool RuntimePermission::implies( Permission const & perm ) const SAL_THROW( () )
{
// check type
if (RUNTIME != perm.m_type)
return false;
RuntimePermission const & demanded = static_cast< RuntimePermission const & >( perm );
// check name
return (sal_False != m_name.equals( demanded.m_name ));
}
//__________________________________________________________________________________________________
OUString RuntimePermission::toString() const SAL_THROW( () )
{
OUStringBuffer buf( 48 );
buf.appendAscii(
RTL_CONSTASCII_STRINGPARAM("com.sun.star.security.RuntimePermission (name=\"") );
buf.append( m_name );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("\")") );
return buf.makeStringAndClear();
}
//##################################################################################################
//__________________________________________________________________________________________________
bool AllPermission::implies( Permission const & ) const SAL_THROW( () )
{
return true;
}
//__________________________________________________________________________________________________
OUString AllPermission::toString() const SAL_THROW( () )
{
return OUSTR("com.sun.star.security.AllPermission");
}
//##################################################################################################
//__________________________________________________________________________________________________
PermissionCollection::PermissionCollection(
Sequence< Any > const & permissions, PermissionCollection const & addition )
SAL_THROW( (RuntimeException) )
: m_head( addition.m_head )
{
Any const * perms = permissions.getConstArray();
for ( sal_Int32 nPos = permissions.getLength(); nPos--; )
{
Any const & perm = perms[ nPos ];
Type const & perm_type = perm.getValueType();
// supported permission types
if (perm_type.equals( ::getCppuType( (io::FilePermission const *)0 ) ))
{
m_head = new FilePermission(
*reinterpret_cast< io::FilePermission const * >( perm.pData ), m_head );
}
else if (perm_type.equals( ::getCppuType( (connection::SocketPermission const *)0 ) ))
{
m_head = new SocketPermission(
*reinterpret_cast< connection::SocketPermission const * >( perm.pData ), m_head );
}
else if (perm_type.equals( ::getCppuType( (security::RuntimePermission const *)0 ) ))
{
m_head = new RuntimePermission(
*reinterpret_cast< security::RuntimePermission const * >( perm.pData ), m_head );
}
else if (perm_type.equals( ::getCppuType( (security::AllPermission const *)0 ) ))
{
m_head = new AllPermission( m_head );
}
else
{
OUStringBuffer buf( 48 );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM(
"checking for unsupported permission type: ") );
buf.append( perm_type.getTypeName() );
throw RuntimeException(
buf.makeStringAndClear(), Reference< XInterface >() );
}
}
}
#ifdef __DIAGNOSE
//__________________________________________________________________________________________________
Sequence< OUString > PermissionCollection::toStrings() const SAL_THROW( () )
{
vector< OUString > strings;
strings.reserve( 8 );
for ( Permission * perm = m_head.get(); perm; perm = perm->m_next.get() )
{
strings.push_back( perm->toString() );
}
return Sequence< OUString >(
strings.empty() ? 0 : &strings[ 0 ], strings.size() );
}
#endif
//__________________________________________________________________________________________________
inline static bool __implies(
::rtl::Reference< Permission > const & head, Permission const & demanded ) SAL_THROW( () )
{
for ( Permission * perm = head.get(); perm; perm = perm->m_next.get() )
{
if (perm->implies( demanded ))
return true;
}
return false;
}
#ifdef __DIAGNOSE
//--------------------------------------------------------------------------------------------------
static void demanded_diag(
Permission const & perm )
SAL_THROW( () )
{
OUStringBuffer buf( 48 );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("demanding ") );
buf.append( perm.toString() );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM(" => ok.") );
::rtl::OString str(
::rtl::OUStringToOString( buf.makeStringAndClear(), RTL_TEXTENCODING_ASCII_US ) );
OSL_TRACE( str.getStr() );
}
#endif
//--------------------------------------------------------------------------------------------------
static void throwAccessControlException(
Permission const & perm, Any const & demanded_perm )
SAL_THROW( (security::AccessControlException) )
{
OUStringBuffer buf( 48 );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("access denied: ") );
buf.append( perm.toString() );
throw security::AccessControlException(
buf.makeStringAndClear(), Reference< XInterface >(), demanded_perm );
}
//==================================================================================================
void PermissionCollection::checkPermission( Any const & perm ) const
SAL_THROW( (RuntimeException) )
{
Type const & demanded_type = perm.getValueType();
// supported permission types
// stack object of SimpleReferenceObject are ok, as long as they are not
// assigned to a ::rtl::Reference<> (=> delete this)
if (demanded_type.equals( ::getCppuType( (io::FilePermission const *)0 ) ))
{
FilePermission demanded(
*reinterpret_cast< io::FilePermission const * >( perm.pData ) );
if (__implies( m_head, demanded ))
{
#ifdef __DIAGNOSE
demanded_diag( demanded );
#endif
return;
}
throwAccessControlException( demanded, perm );
}
else if (demanded_type.equals( ::getCppuType( (connection::SocketPermission const *)0 ) ))
{
SocketPermission demanded(
*reinterpret_cast< connection::SocketPermission const * >( perm.pData ) );
if (__implies( m_head, demanded ))
{
#ifdef __DIAGNOSE
demanded_diag( demanded );
#endif
return;
}
throwAccessControlException( demanded, perm );
}
else if (demanded_type.equals( ::getCppuType( (security::RuntimePermission const *)0 ) ))
{
RuntimePermission demanded(
*reinterpret_cast< security::RuntimePermission const * >( perm.pData ) );
if (__implies( m_head, demanded ))
{
#ifdef __DIAGNOSE
demanded_diag( demanded );
#endif
return;
}
throwAccessControlException( demanded, perm );
}
else if (demanded_type.equals( ::getCppuType( (security::AllPermission const *)0 ) ))
{
AllPermission demanded;
if (__implies( m_head, demanded ))
{
#ifdef __DIAGNOSE
demanded_diag( demanded );
#endif
return;
}
throwAccessControlException( demanded, perm );
}
else
{
OUStringBuffer buf( 48 );
buf.appendAscii( RTL_CONSTASCII_STRINGPARAM("checking for unsupported permission type: ") );
buf.append( demanded_type.getTypeName() );
throw RuntimeException(
buf.makeStringAndClear(), Reference< XInterface >() );
}
}
}
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