Bug Summary

File:comphelper/source/misc/logging.cxx
Location:line 259, column 13
Description:Called C++ object pointer is null

Annotated Source Code

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#include <comphelper/logging.hxx>
22#include <comphelper/componentcontext.hxx>
23
24#include <com/sun/star/logging/LoggerPool.hpp>
25#include <com/sun/star/logging/LogLevel.hpp>
26#include <com/sun/star/resource/XResourceBundle.hpp>
27#include <com/sun/star/resource/XResourceBundleLoader.hpp>
28
29#include <rtl/ustrbuf.hxx>
30
31//........................................................................
32namespace comphelper
33{
34//........................................................................
35
36 /** === begin UNO using === **/
37 using ::com::sun::star::uno::Reference;
38 using ::com::sun::star::uno::XComponentContext;
39 using ::com::sun::star::logging::XLoggerPool;
40 using ::com::sun::star::logging::LoggerPool;
41 using ::com::sun::star::logging::XLogger;
42 using ::com::sun::star::uno::UNO_QUERY_THROW;
43 using ::com::sun::star::uno::Exception;
44 using ::com::sun::star::logging::XLogHandler;
45 using ::com::sun::star::resource::XResourceBundle;
46 using ::com::sun::star::resource::XResourceBundleLoader;
47 /** === end UNO using === **/
48 namespace LogLevel = ::com::sun::star::logging::LogLevel;
49
50 //====================================================================
51 //= EventLogger_Impl - declaration
52 //====================================================================
53 class EventLogger_Impl
54 {
55 private:
56 ::comphelper::ComponentContext m_aContext;
57 ::rtl::OUString m_sLoggerName;
58 Reference< XLogger > m_xLogger;
59
60 public:
61 EventLogger_Impl( const Reference< XComponentContext >& _rxContext, const ::rtl::OUString& _rLoggerName )
62 :m_aContext( _rxContext )
63 ,m_sLoggerName( _rLoggerName )
64 {
65 impl_createLogger_nothrow();
66 }
67
68 inline bool isValid() const { return m_xLogger.is(); }
69 inline const ::rtl::OUString& getName() const { return m_sLoggerName; }
70 inline const Reference< XLogger >& getLogger() const { return m_xLogger; }
71 inline const ::comphelper::ComponentContext& getContext() const { return m_aContext; }
72
73 private:
74 void impl_createLogger_nothrow();
75 };
76
77 //====================================================================
78 //= EventLogger_Impl - implementation
79 //====================================================================
80 //--------------------------------------------------------------------
81 void EventLogger_Impl::impl_createLogger_nothrow()
82 {
83 try
84 {
85 Reference< XLoggerPool > xPool( LoggerPool::get( m_aContext.getUNOContext() ), UNO_QUERY_THROW );
86 if ( !m_sLoggerName.isEmpty() )
87 m_xLogger = xPool->getNamedLogger( m_sLoggerName );
88 else
89 m_xLogger = xPool->getDefaultLogger();
90 }
91 catch( const Exception& e )
92 {
93 (void)e;
94 OSL_FAIL( "EventLogger_Impl::impl_createLogger_nothrow: caught an exception!" )do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/comphelper/source/misc/logging.cxx"
":" "94" ": "), "%s", "EventLogger_Impl::impl_createLogger_nothrow: caught an exception!"
); } } while (false);
95 }
96 }
97
98 //====================================================================
99 //= EventLogger
100 //====================================================================
101 //--------------------------------------------------------------------
102 EventLogger::EventLogger( const Reference< XComponentContext >& _rxContext, const sal_Char* _pAsciiLoggerName )
103 :m_pImpl( new EventLogger_Impl( _rxContext, ::rtl::OUString::createFromAscii( _pAsciiLoggerName ) ) )
104 {
105 }
106
107 //--------------------------------------------------------------------
108 EventLogger::~EventLogger()
109 {
110 }
111
112 //--------------------------------------------------------------------
113 bool EventLogger::isLoggable( const sal_Int32 _nLogLevel ) const
114 {
115 if ( !m_pImpl->isValid() )
116 return false;
117
118 try
119 {
120 return m_pImpl->getLogger()->isLoggable( _nLogLevel );
121 }
122 catch( const Exception& e )
123 {
124 (void)e;
125 OSL_FAIL( "EventLogger::isLoggable: caught an exception!" )do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/comphelper/source/misc/logging.cxx"
":" "125" ": "), "%s", "EventLogger::isLoggable: caught an exception!"
); } } while (false);
126 }
127
128 return false;
129 }
130
131 //--------------------------------------------------------------------
132 namespace
133 {
134 void lcl_replaceParameter( ::rtl::OUString& _inout_Message, const ::rtl::OUString& _rPlaceHolder, const ::rtl::OUString& _rReplacement )
135 {
136 sal_Int32 nPlaceholderPosition = _inout_Message.indexOf( _rPlaceHolder );
137 OSL_ENSURE( nPlaceholderPosition >= 0, "lcl_replaceParameter: placeholder not found!" )do { if (true && (!(nPlaceholderPosition >= 0))) {
sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"
), ("/usr/local/src/libreoffice/comphelper/source/misc/logging.cxx"
":" "137" ": "), "%s", "lcl_replaceParameter: placeholder not found!"
); } } while (false);
138 if ( nPlaceholderPosition < 0 )
139 return;
140
141 _inout_Message = _inout_Message.replaceAt( nPlaceholderPosition, _rPlaceHolder.getLength(), _rReplacement );
142 }
143 }
144
145 //--------------------------------------------------------------------
146 bool EventLogger::impl_log( const sal_Int32 _nLogLevel,
147 const sal_Char* _pSourceClass, const sal_Char* _pSourceMethod, const ::rtl::OUString& _rMessage,
148 const OptionalString& _rArgument1, const OptionalString& _rArgument2,
149 const OptionalString& _rArgument3, const OptionalString& _rArgument4,
150 const OptionalString& _rArgument5, const OptionalString& _rArgument6 ) const
151 {
152 // (if ::rtl::OUString had an indexOfAscii, we could save those ugly statics ...)
153 static ::rtl::OUString sPH1( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "$1$" )(&("$1$")[0]), ((sal_Int32)((sizeof ("$1$") / sizeof (("$1$"
)[0]))-1)), (((rtl_TextEncoding) 11)) ) );
154 static ::rtl::OUString sPH2( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "$2$" )(&("$2$")[0]), ((sal_Int32)((sizeof ("$2$") / sizeof (("$2$"
)[0]))-1)), (((rtl_TextEncoding) 11)) ) );
155 static ::rtl::OUString sPH3( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "$3$" )(&("$3$")[0]), ((sal_Int32)((sizeof ("$3$") / sizeof (("$3$"
)[0]))-1)), (((rtl_TextEncoding) 11)) ) );
156 static ::rtl::OUString sPH4( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "$4$" )(&("$4$")[0]), ((sal_Int32)((sizeof ("$4$") / sizeof (("$4$"
)[0]))-1)), (((rtl_TextEncoding) 11)) ) );
157 static ::rtl::OUString sPH5( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "$5$" )(&("$5$")[0]), ((sal_Int32)((sizeof ("$5$") / sizeof (("$5$"
)[0]))-1)), (((rtl_TextEncoding) 11)) ) );
158 static ::rtl::OUString sPH6( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "$6$" )(&("$6$")[0]), ((sal_Int32)((sizeof ("$6$") / sizeof (("$6$"
)[0]))-1)), (((rtl_TextEncoding) 11)) ) );
159
160 ::rtl::OUString sMessage( _rMessage );
161 if ( !!_rArgument1 )
162 lcl_replaceParameter( sMessage, sPH1, *_rArgument1 );
163
164 if ( !!_rArgument2 )
165 lcl_replaceParameter( sMessage, sPH2, *_rArgument2 );
166
167 if ( !!_rArgument3 )
168 lcl_replaceParameter( sMessage, sPH3, *_rArgument3 );
169
170 if ( !!_rArgument4 )
171 lcl_replaceParameter( sMessage, sPH4, *_rArgument4 );
172
173 if ( !!_rArgument5 )
174 lcl_replaceParameter( sMessage, sPH5, *_rArgument5 );
175
176 if ( !!_rArgument6 )
177 lcl_replaceParameter( sMessage, sPH6, *_rArgument6 );
178
179 try
180 {
181 Reference< XLogger > xLogger( m_pImpl->getLogger() );
182 OSL_PRECOND( xLogger.is(), "EventLogger::impl_log: should never be called without a logger!" )do { if (true && (!(xLogger.is()))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/comphelper/source/misc/logging.cxx"
":" "182" ": "), "%s", "EventLogger::impl_log: should never be called without a logger!"
); } } while (false);
183 if ( _pSourceClass && _pSourceMethod )
184 {
185 xLogger->logp(
186 _nLogLevel,
187 ::rtl::OUString::createFromAscii( _pSourceClass ),
188 ::rtl::OUString::createFromAscii( _pSourceMethod ),
189 sMessage
190 );
191 }
192 else
193 {
194 xLogger->log( _nLogLevel, sMessage );
195 }
196 }
197 catch( const Exception& e )
198 {
199 (void)e;
200 OSL_FAIL( "EventLogger::impl_log: caught an exception!" )do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/comphelper/source/misc/logging.cxx"
":" "200" ": "), "%s", "EventLogger::impl_log: caught an exception!"
); } } while (false);
201 }
202
203 return false;
204 }
205
206 //====================================================================
207 //= ResourceBasedEventLogger_Data
208 //====================================================================
209 struct ResourceBasedEventLogger_Data
210 {
211 /// the base name of the resource bundle
212 ::rtl::OUString sBundleBaseName;
213 /// did we already attempt to load the bundle?
214 bool bBundleLoaded;
215 /// the lazily loaded bundle
216 Reference< XResourceBundle > xBundle;
217
218 ResourceBasedEventLogger_Data()
219 :sBundleBaseName()
220 ,bBundleLoaded( false )
221 ,xBundle()
222 {
223 }
224 };
225
226 //--------------------------------------------------------------------
227 bool lcl_loadBundle_nothrow( const ComponentContext& _rContext, ResourceBasedEventLogger_Data& _rLoggerData )
228 {
229 if ( _rLoggerData.bBundleLoaded )
230 return _rLoggerData.xBundle.is();
231
232 // no matter what happens below, don't attempt creation ever again
233 _rLoggerData.bBundleLoaded = true;
234
235 try
236 {
237 Reference< XResourceBundleLoader > xLoader( _rContext.getSingleton( "com.sun.star.resource.OfficeResourceLoader" ), UNO_QUERY_THROW );
238 _rLoggerData.xBundle = Reference< XResourceBundle >( xLoader->loadBundle_Default( _rLoggerData.sBundleBaseName ), UNO_QUERY_THROW );
239 }
240 catch( const Exception& e )
241 {
242 (void)e;
243 OSL_FAIL( "lcl_loadBundle_nothrow: caught an exception!" )do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/comphelper/source/misc/logging.cxx"
":" "243" ": "), "%s", "lcl_loadBundle_nothrow: caught an exception!"
); } } while (false);
244 }
245
246 return _rLoggerData.xBundle.is();
247 }
248
249 //--------------------------------------------------------------------
250 ::rtl::OUString lcl_loadString_nothrow( const Reference< XResourceBundle >& _rxBundle, const sal_Int32 _nMessageResID )
251 {
252 OSL_PRECOND( _rxBundle.is(), "lcl_loadString_nothrow: this will crash!" )do { if (true && (!(_rxBundle.is()))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/comphelper/source/misc/logging.cxx"
":" "252" ": "), "%s", "lcl_loadString_nothrow: this will crash!"
); } } while (false);
253 ::rtl::OUString sMessage;
254 try
255 {
256 ::rtl::OUStringBuffer aBuffer;
257 aBuffer.appendAscii( "string:" );
258 aBuffer.append( _nMessageResID );
259 OSL_VERIFY( _rxBundle->getDirectElement( aBuffer.makeStringAndClear() ) >>= sMessage )do { if (!(_rxBundle->getDirectElement( aBuffer.makeStringAndClear
() ) >>= sMessage)) do { if (true && (!(0))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/comphelper/source/misc/logging.cxx"
":" "259" ": "), "OSL_ASSERT: %s", "0"); } } while (false); }
while (0);
Within the expansion of the macro 'OSL_VERIFY':
a
Called C++ object pointer is null
260 }
261 catch( const Exception& e )
262 {
263 (void)e;
264 OSL_FAIL( "lcl_loadString_nothrow: caught an exception!" )do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/comphelper/source/misc/logging.cxx"
":" "264" ": "), "%s", "lcl_loadString_nothrow: caught an exception!"
); } } while (false);
265 }
266 return sMessage;
267 }
268
269 //====================================================================
270 //= ResourceBasedEventLogger
271 //====================================================================
272 //--------------------------------------------------------------------
273 ResourceBasedEventLogger::ResourceBasedEventLogger( const Reference< XComponentContext >& _rxContext, const sal_Char* _pResourceBundleBaseName,
274 const sal_Char* _pAsciiLoggerName )
275 :EventLogger( _rxContext, _pAsciiLoggerName )
276 ,m_pData( new ResourceBasedEventLogger_Data )
277 {
278 m_pData->sBundleBaseName = ::rtl::OUString::createFromAscii( _pResourceBundleBaseName );
279 }
280
281 //--------------------------------------------------------------------
282 ::rtl::OUString ResourceBasedEventLogger::impl_loadStringMessage_nothrow( const sal_Int32 _nMessageResID ) const
283 {
284 ::rtl::OUString sMessage;
285 if ( lcl_loadBundle_nothrow( m_pImpl->getContext(), *m_pData ) )
286 sMessage = lcl_loadString_nothrow( m_pData->xBundle, _nMessageResID );
287 if ( sMessage.isEmpty() )
288 {
289 ::rtl::OUStringBuffer aBuffer;
290 aBuffer.appendAscii( "<invalid event resource: '" );
291 aBuffer.append( m_pData->sBundleBaseName );
292 aBuffer.appendAscii( ":" );
293 aBuffer.append( _nMessageResID );
294 aBuffer.appendAscii( "'>" );
295 sMessage = aBuffer.makeStringAndClear();
296 }
297 return sMessage;
298 }
299
300//........................................................................
301} // namespace comphelper
302//........................................................................
303
304/* vim:set shiftwidth=4 softtabstop=4 expandtab: */