dcopclient: Use default path for XDG_RUNTIME_DIR if the variable is not set.

This resolves issue TDE/tdebase#241.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 81d495430d)

dcop/client/dcop.cpp

@@ -590,69 +590,76 @@ int runDCOP( QCStringList args, UserList users, Session session,
 	    }
 	}
 
-	if( users.count() > 1 || ( users.count() == 1 &&
-	    ( getenv( "ICEAUTHORITY" ) == 0 || getenv( "DISPLAY" ) == 0 ) ) )
+	if ((users.count() > 1) || ((users.count() == 1) &&
+		((getenv("ICEAUTHORITY") == 0) || (getenv("DISPLAY") == 0))))
 	{
-	    // Check for ICE authority file and if the file can be read by us
-	    TQString iceFileBase = "ICEauthority";
-	    TQString iceFile;
-	    TQFileInfo fi;
+		// Check for ICE authority file and if the file can be read by us
+		TQString iceFileBase = "ICEauthority";
+		TQString iceFile;
+		TQFileInfo fi;
 
-	    if (getenv("XDG_RUNTIME_DIR") != 0 )
-	    {
-		TQFileInfo xdgRuntime(getenv("XDG_RUNTIME_DIR"));
-		passwd* pstruct = getpwnam(it.key().local8Bit());
-		if (pstruct)
+		TQString xdgRuntimeDir = TQString::fromLocal8Bit(getenv("XDG_RUNTIME_DIR"));
+		if (xdgRuntimeDir.isEmpty())
 		{
-		    iceFile = TQString("%1/%2/%3").arg(xdgRuntime.dirPath()).arg(pstruct->pw_uid).arg(iceFileBase);
-		    fi.setFile(iceFile);
+			xdgRuntimeDir = "/run/user/<uid>";
 		}
-		if (!pstruct || !fi.exists())
+		if (!xdgRuntimeDir.isEmpty())
 		{
-		    iceFile = TQString::null;
+			TQFileInfo xdgRuntime(xdgRuntimeDir);
+			passwd* pstruct = getpwnam(it.key().local8Bit());
+			if (pstruct)
+			{
+				iceFile = TQString("%1/%2/%3").arg(xdgRuntime.dirPath()).arg(pstruct->pw_uid).arg(iceFileBase);
+				fi.setFile(iceFile);
+			}
+			if (!pstruct || !fi.exists())
+			{
+				iceFile = TQString::null;
+			}
 		}
-	    }
-	    if (iceFile.isEmpty())
-	    {
-		iceFile = TQString("%1/.%2").arg(it.data()).arg(iceFileBase);
-		fi.setFile(iceFile);
-	    }
-	    if( iceFile.isEmpty() )
-	    {
-		cerr_ << "WARNING: Cannot determine home directory for user "
-		     << it.key() << "!" << endl
-		     << "Please check permissions or set the $ICEAUTHORITY variable manually before" << endl
-		     << "calling dcop." << endl;
-	    }
-	    else if( fi.exists() )
-	    {
-		if( fi.isReadable() )
+		if (iceFile.isEmpty())
 		{
-		    char *envStr = strdup( ( "ICEAUTHORITY=" + iceFile ).ascii() );
-		    putenv( envStr );
-		    //cerr_ << "ice: " << envStr << endl;
+			iceFile = TQString("%1/.%2").arg(it.data()).arg(iceFileBase);
+			fi.setFile(iceFile);
 		}
-		else
+		if (iceFile.isEmpty())
 		{
-		    cerr_ << "WARNING: ICE authority file " << iceFile
-			 << "is not readable by you!" << endl
-			 << "Please check permissions or set the $ICEAUTHORITY variable manually before" << endl
-			 << "calling dcop." << endl;
+			cerr_ << "WARNING: Cannot determine home directory for user "
+				<< it.key() << "!" << endl
+				<< "Please check permissions or set the $ICEAUTHORITY variable manually before" << endl
+				<< "calling dcop." << endl;
+		}
+		else if (fi.exists())
+		{
+			if (fi.isReadable())
+			{
+				char *envStr = strdup(("ICEAUTHORITY=" + iceFile).local8Bit());
+				putenv(envStr);
+				//cerr_ << "ice: " << envStr << endl;
+			}
+			else
+			{
+				cerr_ << "WARNING: ICE authority file " << iceFile
+					<< "is not readable by you!" << endl
+					<< "Please check permissions or set the $ICEAUTHORITY variable manually before" << endl
+					<< "calling dcop." << endl;
+			}
 		}
-	    }
-	    else
-	    {
-		if( users.count() > 1 )
-		    continue;
 		else
 		{
-		    cerr_ << "WARNING: Cannot find ICE authority file "
-		         << iceFile << "!" << endl
-			 << "Please check permissions or set the $ICEAUTHORITY"
-			 << " variable manually before" << endl
-			 << "calling dcop." << endl;
+			if (users.count() > 1)
+			{
+				continue;
+			}
+			else
+			{
+				cerr_ << "WARNING: Cannot find ICE authority file "
+					<< iceFile << "!" << endl
+					<< "Please check permissions or set the $ICEAUTHORITY"
+					<< " variable manually before" << endl
+					<< "calling dcop." << endl;
+			}
 		}
-	    }
 	}
 
 	// Main loop