wpa_gui: Debug enhancement

Instead of calling a dummy printf function use preprocessor to determine
if debugging mode is enabled. Also use native Qt debug function.

Signed-off-by: Arkadiusz Bokowy <arkadiusz.bokowy@gmail.com>

wpa_supplicant/wpa_gui-qt4/wpagui.cpp

@@ -23,15 +23,14 @@
 #include "userdatarequest.h"
 #include "networkconfig.h"
 
-#if 1
-/* Silence stdout */
-#define printf wpagui_printf
-static int wpagui_printf(const char *, ...)
-{
-	return 0;
-}
+
+#ifndef QT_NO_DEBUG
+#define debug(M, ...) qDebug("DEBUG %d: " M, __LINE__, ##__VA_ARGS__)
+#else
+#define debug(M, ...) do {} while (0)
 #endif
 
+
 WpaGui::WpaGui(QApplication *_app, QWidget *parent, const char *, Qt::WFlags)
 	: QMainWindow(parent), app(_app)
 {
@@ -163,8 +162,8 @@ WpaGui::WpaGui(QApplication *_app, QWidget *parent, const char *, Qt::WFlags)
 	timer->start(1000);
 
 	if (openCtrlConnection(ctrl_iface) < 0) {
-		printf("Failed to open control connection to "
-		       "wpa_supplicant.\n");
+		debug("Failed to open control connection to "
+		      "wpa_supplicant.");
 	}
 
 	updateStatus();
@@ -295,8 +294,8 @@ int WpaGui::openCtrlConnection(const char *ifname)
 				if (strcmp(dent->d_name, ".") == 0 ||
 				    strcmp(dent->d_name, "..") == 0)
 					continue;
-				printf("Selected interface '%s'\n",
-				       dent->d_name);
+				debug("Selected interface '%s'",
+				      dent->d_name);
 				ctrl_iface = strdup(dent->d_name);
 				break;
 			}
@@ -373,7 +372,7 @@ int WpaGui::openCtrlConnection(const char *ifname)
 		monitor_conn = NULL;
 	}
 
-	printf("Trying to connect to '%s'\n", cfile);
+	debug("Trying to connect to '%s'", cfile);
 	ctrl_conn = wpa_ctrl_open(cfile);
 	if (ctrl_conn == NULL) {
 		free(cfile);
@@ -386,7 +385,7 @@ int WpaGui::openCtrlConnection(const char *ifname)
 		return -1;
 	}
 	if (wpa_ctrl_attach(monitor_conn)) {
-		printf("Failed to attach to wpa_supplicant\n");
+		debug("Failed to attach to wpa_supplicant");
 		wpa_ctrl_close(monitor_conn);
 		monitor_conn = NULL;
 		wpa_ctrl_close(ctrl_conn);
@@ -447,9 +446,9 @@ int WpaGui::ctrlRequest(const char *cmd, char *buf, size_t *buflen)
 		return -3;
 	ret = wpa_ctrl_request(ctrl_conn, cmd, strlen(cmd), buf, buflen, NULL);
 	if (ret == -2)
-		printf("'%s' command timed out.\n", cmd);
+		debug("'%s' command timed out.", cmd);
 	else if (ret < 0)
-		printf("'%s' command failed.\n", cmd);
+		debug("'%s' command failed.", cmd);
 
 	return ret;
 }
@@ -705,13 +704,13 @@ void WpaGui::updateNetworks()
 
 void WpaGui::helpIndex()
 {
-	printf("helpIndex\n");
+	debug("helpIndex");
 }
 
 
 void WpaGui::helpContents()
 {
-	printf("helpContents\n");
+	debug("helpContents");
 }
 
 
@@ -806,9 +805,9 @@ void WpaGui::ping()
 
 	len = sizeof(buf) - 1;
 	if (ctrlRequest("PING", buf, &len) < 0) {
-		printf("PING failed - trying to reconnect\n");
+		debug("PING failed - trying to reconnect");
 		if (openCtrlConnection(ctrl_iface) >= 0) {
-			printf("Reconnected successfully\n");
+			debug("Reconnected successfully");
 			pingsToStatusUpdate = 0;
 		}
 	}
@@ -1002,8 +1001,8 @@ void WpaGui::enableNetwork(const QString &sel)
 	if (cmd.contains(QRegExp("^\\d+:")))
 		cmd.truncate(cmd.indexOf(':'));
 	else if (!cmd.startsWith("all")) {
-		printf("Invalid editNetwork '%s'\n",
-		       cmd.toAscii().constData());
+		debug("Invalid editNetwork '%s'",
+		      cmd.toAscii().constData());
 		return;
 	}
 	cmd.prepend("ENABLE_NETWORK ");
@@ -1021,8 +1020,8 @@ void WpaGui::disableNetwork(const QString &sel)
 	if (cmd.contains(QRegExp("^\\d+:")))
 		cmd.truncate(cmd.indexOf(':'));
 	else if (!cmd.startsWith("all")) {
-		printf("Invalid editNetwork '%s'\n",
-		       cmd.toAscii().constData());
+		debug("Invalid editNetwork '%s'",
+		      cmd.toAscii().constData());
 		return;
 	}
 	cmd.prepend("DISABLE_NETWORK ");
@@ -1111,8 +1110,8 @@ void WpaGui::removeNetwork(const QString &sel)
 	if (cmd.contains(QRegExp("^\\d+:")))
 		cmd.truncate(cmd.indexOf(':'));
 	else if (!cmd.startsWith("all")) {
-		printf("Invalid editNetwork '%s'\n",
-		       cmd.toAscii().constData());
+		debug("Invalid editNetwork '%s'",
+		      cmd.toAscii().constData());
 		return;
 	}
 	cmd.prepend("REMOVE_NETWORK ");
@@ -1175,8 +1174,8 @@ int WpaGui::getNetworkDisabled(const QString &sel)
 	size_t reply_len = sizeof(reply) - 1;
 	int pos = cmd.indexOf(':');
 	if (pos < 0) {
-		printf("Invalid getNetworkDisabled '%s'\n",
-		       cmd.toAscii().constData());
+		debug("Invalid getNetworkDisabled '%s'",
+		      cmd.toAscii().constData());
 		return -1;
 	}
 	cmd.truncate(pos);
@@ -1267,8 +1266,8 @@ void WpaGui::saveConfig()
 void WpaGui::selectAdapter( const QString & sel )
 {
 	if (openCtrlConnection(sel.toAscii().constData()) < 0)
-		printf("Failed to open control connection to "
-		       "wpa_supplicant.\n");
+		debug("Failed to open control connection to "
+		      "wpa_supplicant.");
 	updateStatus();
 	updateNetworks();
 }
@@ -1700,13 +1699,13 @@ bool WpaGui::serviceRunning()
 
 	scm = OpenSCManager(0, 0, SC_MANAGER_CONNECT);
 	if (!scm) {
-		printf("OpenSCManager failed: %d\n", (int) GetLastError());
+		debug("OpenSCManager failed: %d", (int) GetLastError());
 		return false;
 	}
 
 	svc = OpenService(scm, WPASVC_NAME, SERVICE_QUERY_STATUS);
 	if (!svc) {
-		printf("OpenService failed: %d\n\n", (int) GetLastError());
+		debug("OpenService failed: %d", (int) GetLastError());
 		CloseServiceHandle(scm);
 		return false;
 	}