Bug Summary

File:home/maarten/src/libreoffice/core/connectivity/source/drivers/postgresql/pq_xtables.cxx
Warning:line 362, column 5
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name pq_xtables.cxx -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -mframe-pointer=all -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib64/clang/11.0.0 -D BOOST_ERROR_CODE_HEADER_ONLY -D BOOST_SYSTEM_NO_DEPRECATED -D CPPU_ENV=gcc3 -D LINUX -D OSL_DEBUG_LEVEL=1 -D SAL_LOG_INFO -D SAL_LOG_WARN -D UNIX -D UNX -D X86_64 -D _PTHREADS -D _REENTRANT -D PQ_SDBC_MAJOR=0 -D PQ_SDBC_MINOR=8 -D PQ_SDBC_MICRO=2 -D EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/openldap/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/postgresql/src/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/postgresql/src/interfaces/libpq -I /home/maarten/src/libreoffice/core/external/boost/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/boost -I /home/maarten/src/libreoffice/core/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include/linux -I /home/maarten/src/libreoffice/core/config_host -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/udkapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/offapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/nss/dist/public/nss -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/nss/dist/out/include -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10 -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/x86_64-redhat-linux -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/11.0.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -O0 -Wno-missing-braces -std=c++17 -fdeprecated-macro -fdebug-compilation-dir /home/maarten/src/libreoffice/core -ferror-limit 19 -fvisibility hidden -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -debug-info-kind=constructor -analyzer-output=html -faddrsig -o /home/maarten/tmp/wis/scan-build-libreoffice/output/report/2020-10-07-141433-9725-1 -x c++ /home/maarten/src/libreoffice/core/connectivity/source/drivers/postgresql/pq_xtables.cxx
1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*************************************************************************
3 *
4 * Effective License of whole file:
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License version 2.1, as published by the Free Software Foundation.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
18 * MA 02111-1307 USA
19 *
20 * Parts "Copyright by Sun Microsystems, Inc" prior to August 2011:
21 *
22 * The Contents of this file are made available subject to the terms of
23 * the GNU Lesser General Public License Version 2.1
24 *
25 * Copyright: 2000 by Sun Microsystems, Inc.
26 *
27 * Contributor(s): Joerg Budischewski
28 *
29 * All parts contributed on or after August 2011:
30 *
31 * This Source Code Form is subject to the terms of the Mozilla Public
32 * License, v. 2.0. If a copy of the MPL was not distributed with this
33 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
34 *
35 ************************************************************************/
36
37#include <rtl/ustrbuf.hxx>
38#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
39#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
40#include <com/sun/star/sdbc/SQLException.hpp>
41#include <com/sun/star/sdbc/XRow.hpp>
42#include <com/sun/star/sdbcx/Privilege.hpp>
43#include <com/sun/star/sdbc/DataType.hpp>
44#include <cppuhelper/exc_hlp.hxx>
45
46#include "pq_xtables.hxx"
47#include "pq_xviews.hxx"
48#include "pq_xtable.hxx"
49#include "pq_statics.hxx"
50#include "pq_tools.hxx"
51
52using osl::MutexGuard;
53
54using com::sun::star::beans::XPropertySet;
55
56using com::sun::star::uno::Any;
57using com::sun::star::uno::makeAny;
58using com::sun::star::uno::UNO_QUERY;
59using com::sun::star::uno::Reference;
60using com::sun::star::uno::Sequence;
61
62using com::sun::star::container::XEnumerationAccess;
63using com::sun::star::container::XEnumeration;
64
65using com::sun::star::sdbc::XRow;
66using com::sun::star::sdbc::XStatement;
67using com::sun::star::sdbc::XResultSet;
68using com::sun::star::sdbc::XDatabaseMetaData;
69using com::sun::star::sdbcx::XColumnsSupplier;
70using com::sun::star::sdbcx::XKeysSupplier;
71
72namespace pq_sdbc_driver
73{
74Tables::Tables(
75 const ::rtl::Reference< comphelper::RefCountedMutex > & refMutex,
76 const css::uno::Reference< css::sdbc::XConnection > & origin,
77 ConnectionSettings *pSettings )
78 : Container( refMutex, origin, pSettings, getStatics().TABLE )
79{}
80
81Tables::~Tables()
82{}
83
84void Tables::refresh()
85{
86 try
87 {
88 osl::MutexGuard guard( m_xMutex->GetMutex() );
89 Statics & st = getStatics();
90
91 Reference< XDatabaseMetaData > meta = m_origin->getMetaData();
92
93 Reference< XResultSet > rs =
94 meta->getTables( Any(), st.cPERCENT,st.cPERCENT, Sequence< OUString > () );
95
96 Reference< XRow > xRow( rs , UNO_QUERY );
97
98 String2IntMap map;
99
100 m_values.clear();
101 sal_Int32 tableIndex = 0;
102 while( rs->next() )
103 {
104 // if creating all these tables turns out to have too bad performance, we might
105 // instead offer a factory interface
106 Table * pTable =
107 new Table( m_xMutex, m_origin, m_pSettings );
108 Reference< css::beans::XPropertySet > prop = pTable;
109
110 OUString name = xRow->getString( TABLE_INDEX_NAME+1);
111 OUString schema = xRow->getString( TABLE_INDEX_SCHEMA+1);
112 pTable->setPropertyValue_NoBroadcast_public(
113 st.CATALOG_NAME , makeAny(xRow->getString( TABLE_INDEX_CATALOG+1) ) );
114 pTable->setPropertyValue_NoBroadcast_public( st.NAME , makeAny( name ) );
115 pTable->setPropertyValue_NoBroadcast_public( st.SCHEMA_NAME , makeAny( schema ));
116 pTable->setPropertyValue_NoBroadcast_public(
117 st.TYPE , makeAny( xRow->getString( TABLE_INDEX_TYPE+1) ) );
118 pTable->setPropertyValue_NoBroadcast_public(
119 st.DESCRIPTION , makeAny( xRow->getString( TABLE_INDEX_REMARKS+1) ) );
120 pTable->setPropertyValue_NoBroadcast_public(
121 st.PRIVILEGES ,
122 makeAny( sal_Int32( css::sdbcx::Privilege::SELECT |
123 css::sdbcx::Privilege::INSERT |
124 css::sdbcx::Privilege::UPDATE |
125 css::sdbcx::Privilege::DELETE |
126 css::sdbcx::Privilege::READ |
127 css::sdbcx::Privilege::CREATE |
128 css::sdbcx::Privilege::ALTER |
129 css::sdbcx::Privilege::REFERENCE |
130 css::sdbcx::Privilege::DROP ) ) );
131
132 {
133 m_values.push_back( makeAny( prop ) );
134 map[ schema + "." + name ] = tableIndex;
135 ++tableIndex;
136 }
137 }
138 m_name2index.swap( map );
139 }
140 catch ( const css::sdbc::SQLException & e )
141 {
142 css::uno::Any anyEx = cppu::getCaughtException();
143 throw css::lang::WrappedTargetRuntimeException( e.Message,
144 e.Context, anyEx );
145 }
146
147 fire( RefreshedBroadcaster( *this ) );
148}
149
150
151static void appendColumnList(
152 OUStringBuffer &buf, const Reference< XColumnsSupplier > & columnSupplier, ConnectionSettings *settings )
153{
154 if( !columnSupplier.is() )
155 return;
156
157 Reference< XEnumerationAccess > columns( columnSupplier->getColumns(),UNO_QUERY );
158 if( !columns.is() )
159 return;
160
161 Reference< XEnumeration > xEnum( columns->createEnumeration() );
162 bool first = true;
163 Statics & st = getStatics();
164
165 while( xEnum.is() && xEnum->hasMoreElements() )
166 {
167 if( first )
168 {
169 first = false;
170 }
171 else
172 {
173 buf.append( ", " );
174 }
175 Reference< XPropertySet > column( xEnum->nextElement(), UNO_QUERY );
176 OUString name = extractStringProperty( column, st.NAME );
177 OUString defaultValue = extractStringProperty( column, st.DEFAULT_VALUE );
178 bool isNullable = extractBoolProperty( column, st.IS_NULLABLE );
179 bool isAutoIncrement = extractBoolProperty( column, st.IS_AUTO_INCREMENT );
180
181 bufferQuoteIdentifier( buf, name, settings );
182
183 OUString type = sqltype2string( column );
184 if( isAutoIncrement )
185 {
186 sal_Int32 dataType = 0;
187 column->getPropertyValue( st.TYPE ) >>= dataType;
188 if( css::sdbc::DataType::INTEGER == dataType )
189 {
190 buf.append( " serial ");
191 isNullable = false;
192 }
193 else if( css::sdbc::DataType::BIGINT == dataType )
194 {
195 buf.append( " serial8 " );
196 isNullable = false;
197 }
198 else
199 buf.append( type );
200 }
201 else
202 {
203 buf.append( type );
204 }
205 if( !defaultValue.isEmpty() )
206 {
207 bufferQuoteConstant( buf, defaultValue, settings );
208 }
209
210 if( ! isNullable )
211 buf.append( " NOT NULL " );
212
213 }
214}
215
216static void appendKeyList(
217 OUStringBuffer & buf, const Reference< XKeysSupplier > &keySupplier, ConnectionSettings *settings )
218{
219 if( !keySupplier.is() )
220 return;
221
222 Reference< XEnumerationAccess > keys( keySupplier->getKeys(), UNO_QUERY );
223 if(keys.is() )
224 {
225 Reference< XEnumeration > xEnum = keys->createEnumeration();
226 while( xEnum.is() && xEnum->hasMoreElements() )
227 {
228 buf.append( ", " );
229 Reference< XPropertySet > key( xEnum->nextElement(), UNO_QUERY );
230 bufferKey2TableConstraint( buf, key, settings );
231 }
232 }
233}
234
235void Tables::appendByDescriptor(
236 const css::uno::Reference< css::beans::XPropertySet >& descriptor )
237{
238 osl::MutexGuard guard( m_xMutex->GetMutex() );
239 Reference< XStatement > stmt =
240 m_origin->createStatement();
241
242 Statics &st = getStatics();
243 OUString name,schema;
244 descriptor->getPropertyValue( st.SCHEMA_NAME ) >>= schema;
245 descriptor->getPropertyValue( st.NAME ) >>= name;
246
247 TransactionGuard transaction( stmt );
248
249 OUStringBuffer buf( 128 );
250 buf.append( "CREATE TABLE" );
251 bufferQuoteQualifiedIdentifier( buf, schema, name , m_pSettings);
252 buf.append( "(" );
253
254 // columns
255 Reference< XColumnsSupplier > supplier( descriptor, UNO_QUERY );
256 appendColumnList( buf, supplier, m_pSettings );
257
258 appendKeyList( buf, Reference< XKeysSupplier >( descriptor, UNO_QUERY ), m_pSettings );
259
260 buf.append( ") " );
261 // execute the creation !
262 transaction.executeUpdate( buf.makeStringAndClear() );
263
264 // description...
265 OUString description = extractStringProperty( descriptor, st.DESCRIPTION );
266 if( !description.isEmpty() )
267 {
268 buf.truncate();
269 buf.append( "COMMENT ON TABLE" );
270 bufferQuoteQualifiedIdentifier( buf, schema, name, m_pSettings );
271 buf.append( "IS " );
272 bufferQuoteConstant( buf, description, m_pSettings);
273
274 transaction.executeUpdate( buf.makeStringAndClear() );
275 }
276
277 // column descriptions
278 if( supplier.is() )
279 {
280 Reference< XEnumerationAccess > columns( supplier->getColumns(),UNO_QUERY );
281 if( columns.is() )
282 {
283 Reference< XEnumeration > xEnum( columns->createEnumeration() );
284 while( xEnum.is() && xEnum->hasMoreElements() )
285 {
286 Reference< XPropertySet > column( xEnum->nextElement(), UNO_QUERY );
287 description = extractStringProperty( column,st.DESCRIPTION );
288 if( !description.isEmpty() )
289 {
290 buf.truncate();
291 buf.append( "COMMENT ON COLUMN " );
292 bufferQuoteQualifiedIdentifier(
293 buf, schema, name, extractStringProperty( column, st.NAME ), m_pSettings );
294 buf.append( "IS " );
295 bufferQuoteConstant( buf, description, m_pSettings );
296 transaction.executeUpdate( buf.makeStringAndClear() );
297 }
298 }
299 }
300 }
301
302 transaction.commit();
303
304 disposeNoThrow( stmt );
305 // TODO: cheaper recalculate
306// Container::append( concatQualified( schema, name ), descriptor ); // maintain the lists
307 refresh();
308}
309
310void Tables::dropByIndex( sal_Int32 index )
311{
312 osl::MutexGuard guard( m_xMutex->GetMutex() );
313 if( index < 0 || index >= static_cast<sal_Int32>(m_values.size()) )
314 {
315 throw css::lang::IndexOutOfBoundsException(
316 "TABLES: Index out of range (allowed 0 to " + OUString::number(m_values.size() -1)
317 + ", got " + OUString::number( index ) + ")",
318 *this );
319 }
320
321 Reference< XPropertySet > set;
322 m_values[index] >>= set;
323 Statics &st = getStatics();
324 OUString name,schema;
325 set->getPropertyValue( st.SCHEMA_NAME ) >>= schema;
326 set->getPropertyValue( st.NAME ) >>= name;
327 if( extractStringProperty( set, st.TYPE ) == st.VIEW && m_pSettings->views.is() )
328 {
329 m_pSettings->pViewsImpl->dropByName( concatQualified( schema, name ) );
330 }
331 else
332 {
333 OUStringBuffer update( 128 );
334 update.append( "DROP " );
335 if( extractStringProperty( set, st.TYPE ) == st.VIEW )
336 update.append( "VIEW " );
337 else
338 update.append( "TABLE " );
339 bufferQuoteQualifiedIdentifier( update, schema, name, m_pSettings );
340 Reference< XStatement > stmt = m_origin->createStatement( );
341 DisposeGuard dispGuard( stmt );
342 stmt->executeUpdate( update.makeStringAndClear() );
343 }
344
345 Container::dropByIndex( index );
346}
347
348
349css::uno::Reference< css::beans::XPropertySet > Tables::createDataDescriptor()
350{
351 return new TableDescriptor( m_xMutex, m_origin, m_pSettings );
352}
353
354Reference< css::container::XNameAccess > Tables::create(
355 const ::rtl::Reference< comphelper::RefCountedMutex > & refMutex,
356 const css::uno::Reference< css::sdbc::XConnection > & origin,
357 ConnectionSettings *pSettings,
358 Tables **ppTables)
359{
360 *ppTables = new Tables( refMutex, origin, pSettings );
1
Assigning value
→
361 Reference< css::container::XNameAccess > ret = *ppTables;
362 (*ppTables)->refresh();
2
←
Called C++ object pointer is null
363
364 return ret;
365}
366
367};
368
369/* vim:set shiftwidth=4 softtabstop=4 expandtab: */