[PATCHv2] wpa_supplicant: add DBus method for changing debug parameters

[Helmut Schaa]

Add a new DBus method "setDebugParams" which takes the parameters
debug_level, debug_timestamp and show_keys as input and updates the
internal debug variables accordingly.

To change the debug level, enable/disable timestamps and enable/disable
show_keys the following dbus-send command can be used:

dbus-send --system --dest=fi.epitest.hostap.WPASupplicant --print-reply
/fi/epitest/hostap/WPASupplicant fi.epitest.hostap.WPASupplicant.setDebugParams
int32:0 boolean:false boolean:false

Signed-off-by: Helmut Schaa <helmut.schaa at googlemail.com>
---

diff --git a/wpa_supplicant/ctrl_iface_dbus.c b/wpa_supplicant/ctrl_iface_dbus.c
index c4e329c..7048d75 100644
--- a/wpa_supplicant/ctrl_iface_dbus.c
+++ b/wpa_supplicant/ctrl_iface_dbus.c
@@ -603,6 +603,9 @@ static DBusHandlerResult wpas_message_handler(DBusConnection *connection,
 		} else if (!strcmp(method, "getInterface")) {
 			reply = wpas_dbus_global_get_interface(
 				message, ctrl_iface->global);
+		} else if (!strcmp(method, "setDebugParams")) {
+			reply = wpas_dbus_global_set_debugparams(
+				message, ctrl_iface->global);
 		}
 	}
 
diff --git a/wpa_supplicant/ctrl_iface_dbus_handlers.c b/wpa_supplicant/ctrl_iface_dbus_handlers.c
index 161f7f8..e21c35c 100644
--- a/wpa_supplicant/ctrl_iface_dbus_handlers.c
+++ b/wpa_supplicant/ctrl_iface_dbus_handlers.c
@@ -25,6 +25,9 @@
 #include "wpas_glue.h"
 #include "eapol_supp/eapol_supp_sm.h"
 
+extern int wpa_debug_level;
+extern int wpa_debug_show_keys;
+extern int wpa_debug_timestamp;
 
 /**
  * wpas_dbus_new_invalid_opts_error - Return a new invalid options error message
@@ -277,6 +280,51 @@ out:
 	return reply;
 }
 
+/**
+ * wpas_dbus_global_set_debugparams- Set the debug params
+ * @message: Pointer to incoming dbus message
+ * @global: %wpa_supplicant global data structure
+ * Returns: a dbus message containing a UINT32 indicating success (1) or
+ *          failure (0), or returns a dbus error message with more information
+ *
+ * Handler function for "setDebugParams" method call. Handles requests
+ * by dbus clients for the object path of an specific network interface.
+ */
+DBusMessage * wpas_dbus_global_set_debugparams(DBusMessage *message,
+					     struct wpa_global *global)
+{
+	DBusMessage *reply = NULL;
+	int debug_level;	
+	dbus_bool_t debug_timestamp;	
+	dbus_bool_t debug_show_keys;
+
+	if (!dbus_message_get_args(message, NULL,
+	                           DBUS_TYPE_INT32, &debug_level,
+	                           DBUS_TYPE_BOOLEAN, &debug_timestamp,
+	                           DBUS_TYPE_BOOLEAN, &debug_show_keys,
+	                           DBUS_TYPE_INVALID)) {
+		reply = wpas_dbus_new_invalid_opts_error(message, NULL);
+		goto out;
+	}
+
+	/* check for allowed debuglevels */
+	if (debug_level != MSG_MSGDUMP &&
+	    debug_level != MSG_DEBUG &&
+	    debug_level != MSG_INFO &&
+	    debug_level != MSG_WARNING &&
+	    debug_level != MSG_ERROR) {
+		reply = wpas_dbus_new_invalid_opts_error(message, NULL);
+		goto out;
+	}
+
+	wpa_debug_level = debug_level;
+	wpa_debug_timestamp = debug_timestamp ? 1 : 0;
+	wpa_debug_show_keys = debug_show_keys ? 1 : 0;
+	reply = wpas_dbus_new_success_reply(message);
+
+out:
+	return reply;
+}
 
 /**
  * wpas_dbus_iface_scan - Request a wireless scan on an interface
diff --git a/wpa_supplicant/ctrl_iface_dbus_handlers.h b/wpa_supplicant/ctrl_iface_dbus_handlers.h
index 9660f95..65fa721 100644
--- a/wpa_supplicant/ctrl_iface_dbus_handlers.h
+++ b/wpa_supplicant/ctrl_iface_dbus_handlers.h
@@ -28,6 +28,9 @@ DBusMessage * wpas_dbus_global_remove_interface(DBusMessage *message,
 DBusMessage * wpas_dbus_global_get_interface(DBusMessage *message,
 					     struct wpa_global *global);
 
+DBusMessage * wpas_dbus_global_set_debugparams(DBusMessage *message,
+					     struct wpa_global *global);
+
 DBusMessage * wpas_dbus_iface_scan(DBusMessage *message,
 				   struct wpa_supplicant *wpa_s);