Patch a few buffer overrun problems and odd crash potentials

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1217371 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

5 files changed, 14 insertions, 11 deletions

diff --git a/kdecore/kapplication.cpp b/kdecore/kapplication.cpp
index 07260813c..3b6b78367 100644
--- a/kdecore/kapplication.cpp
+++ b/kdecore/kapplication.cpp
@@ -617,7 +617,7 @@ KApplication::KApplication( int& argc, char** argv, const TQCString& rAppName,
 
 KApplication::KApplication( bool allowStyles, bool GUIenabled ) :
   TQApplication( *KCmdLineArgs::qt_argc(), *KCmdLineArgs::qt_argv(),
-                GUIenabled ),
+                TRUE ),	// Qt4 requires that there always be a GUI
   KInstance( KCmdLineArgs::about),
 #ifdef Q_WS_X11
   display(0L),
diff --git a/kdecore/kconfig_compiler/kconfig_compiler.cpp b/kdecore/kconfig_compiler/kconfig_compiler.cpp
index 1b1d82860..434208b70 100644
--- a/kdecore/kconfig_compiler/kconfig_compiler.cpp
+++ b/kdecore/kconfig_compiler/kconfig_compiler.cpp
@@ -933,7 +933,7 @@ TQString itemAccessorBody( CfgEntry *e )
 
 //indents text adding X spaces per line
 TQString indent(TQString text, int spaces)
-{    
+{
     TQString result;
     TQTextStream out(&result, IO_WriteOnly);
     TQTextStream in(&text, IO_ReadOnly);
diff --git a/kdecore/ksycoca.cpp b/kdecore/ksycoca.cpp
index f6b9ffa6a..255763ef0 100644
--- a/kdecore/ksycoca.cpp
+++ b/kdecore/ksycoca.cpp
@@ -87,7 +87,7 @@ int KSycoca::version()
 
 // Read-only constructor
 KSycoca::KSycoca()
-  : DCOPObject("ksycoca"), m_lstFactories(0), m_str(0), bNoDatabase(false),
+  : DCOPObject("ksycoca"), m_lstFactories(0), m_str(0), m_barray(0), bNoDatabase(false),
     m_sycoca_size(0), m_sycoca_mmap(0), m_timeStamp(0)
 {
    d = new KSycocaPrivate;
@@ -110,6 +110,7 @@ bool KSycoca::openDatabase( bool openDummyIfNotFound )
   
    m_sycoca_mmap = 0;
    m_str = 0;
+   m_barray = 0;
    TQString path;
    TQCString ksycoca_env = getenv("KDESYCOCA");
    if (ksycoca_env.isEmpty())
@@ -154,9 +155,9 @@ bool KSycoca::openDatabase( bool openDummyIfNotFound )
 #ifdef HAVE_MADVISE
 	(void) madvise((char*)m_sycoca_mmap, m_sycoca_size, MADV_WILLNEED);
 #endif
-        TQByteArray b_array;
-        b_array.setRawData(m_sycoca_mmap, m_sycoca_size);
-        TQBuffer *buffer = new TQBuffer( b_array );
+        m_barray = new TQByteArray();
+        m_barray->setRawData(m_sycoca_mmap, m_sycoca_size);
+        TQBuffer *buffer = new TQBuffer( *m_barray );
         buffer->open(IO_ReadWrite);
         m_str = new TQDataStream( buffer);
      }
@@ -195,7 +196,7 @@ bool KSycoca::openDatabase( bool openDummyIfNotFound )
 
 // Read-write constructor - only for KBuildSycoca
 KSycoca::KSycoca( bool /* dummy */ )
-  : DCOPObject("ksycoca_building"), m_lstFactories(0), m_str(0), bNoDatabase(false),
+  : DCOPObject("ksycoca_building"), m_lstFactories(0), m_str(0), m_barray(0), bNoDatabase(false),
     m_sycoca_size(0), m_sycoca_mmap(0)
 {
    d = new KSycocaPrivate;
@@ -226,13 +227,13 @@ KSycoca::~KSycoca()
 
 void KSycoca::closeDatabase()
 {
-   TQIODevice *device = 0;
+   QIODevice *device = 0;
    if (m_str)
-      device = m_str->tqdevice();
+      device = m_str->device();
 #ifdef HAVE_MMAP
    if (device && m_sycoca_mmap)
    {
-      TQBuffer *buf = (TQBuffer *) device;
+      TQBuffer *buf = static_cast<TQBuffer*>(device);
       buf->buffer().resetRawData(m_sycoca_mmap, m_sycoca_size);
       // Solaris has munmap(char*, size_t) and everything else should
       // be happy with a char* for munmap(void*, size_t)
@@ -246,6 +247,7 @@ void KSycoca::closeDatabase()
    delete device;
    if (TQT_TQIODEVICE(d->database) != device)
       delete d->database;
+   if (m_barray) delete m_barray;
    device = 0;
    d->database = 0;
    // It is very important to delete all factories here
diff --git a/kdecore/ksycoca.h b/kdecore/ksycoca.h
index 6b8fcd0f3..52e712989 100644
--- a/kdecore/ksycoca.h
+++ b/kdecore/ksycoca.h
@@ -169,6 +169,7 @@ protected:
    void closeDatabase();
    KSycocaFactoryList *m_lstFactories;
    TQDataStream *m_str;
+   TQByteArray *m_barray;
    bool bNoDatabase;
    size_t m_sycoca_size;
    const char *m_sycoca_mmap;
diff --git a/kdecore/kurl.cpp b/kdecore/kurl.cpp
index 047f18dee..428ab2f20 100644
--- a/kdecore/kurl.cpp
+++ b/kdecore/kurl.cpp
@@ -83,7 +83,7 @@ static TQString encode( const TQString& segment, int encoding_offset, int encodi
 
   int old_length = isRawURI ? local.size() - 1 : local.length();
 
-  if ( !old_length )
+  if ( old_length < 1 )
     return segment.isNull() ? TQString::null : TQString(""); // differentiate null and empty
 
   // a worst case approximation