client: Add connmanctl D-Bus helper functions

Add helper functions for pretty-printing D-Bus messages and making a
method call.

1 files changed, 193 insertions, 0 deletions

diff --git a/client/dbus_helpers.c b/client/dbus_helpers.c
new file mode 100644
index 00000000..816da73a
--- /dev/null
+++ b/client/dbus_helpers.c
@@ -0,0 +1,193 @@
+/*
+ *
+ *  Connection Manager
+ *
+ *  Copyright (C) 2013  Intel Corporation. All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <glib.h>
+
+#include "dbus_helpers.h"
+
+#define TIMEOUT         60000
+
+void __connmanctl_dbus_print(DBusMessageIter *iter, const char *pre,
+		const char *dict, const char *sep)
+{
+	int arg_type;
+	dbus_bool_t b;
+	unsigned char c;
+	unsigned int i;
+	double d;
+
+	char *str;
+	DBusMessageIter entry;
+
+	if (pre == NULL)
+		pre = "";
+
+	while ((arg_type = dbus_message_iter_get_arg_type(iter))
+			!= DBUS_TYPE_INVALID) {
+
+		fprintf(stdout, "%s", pre);
+
+		switch (arg_type) {
+		case DBUS_TYPE_STRUCT:
+			fprintf(stdout, "{ ");
+			dbus_message_iter_recurse(iter, &entry);
+			__connmanctl_dbus_print(&entry, "", "=", " ");
+			fprintf(stdout, " }");
+			break;
+
+		case DBUS_TYPE_ARRAY:
+			fprintf(stdout, "[ ");
+
+			dbus_message_iter_recurse(iter, &entry);
+			__connmanctl_dbus_print(&entry, "", "=", ", ");
+
+			fprintf(stdout, " ]");
+			break;
+
+		case DBUS_TYPE_DICT_ENTRY:
+
+			dbus_message_iter_recurse(iter, &entry);
+			__connmanctl_dbus_print(&entry, "", dict, dict);
+			break;
+
+		case DBUS_TYPE_STRING:
+		case DBUS_TYPE_OBJECT_PATH:
+			dbus_message_iter_get_basic(iter, &str);
+			fprintf(stdout, "%s", str);
+			break;
+
+		case DBUS_TYPE_VARIANT:
+			dbus_message_iter_recurse(iter, &entry);
+			__connmanctl_dbus_print(&entry, pre, dict, sep);
+			break;
+
+		case DBUS_TYPE_BOOLEAN:
+			dbus_message_iter_get_basic(iter, &b);
+			if (b == FALSE)
+				fprintf(stdout, "False");
+			else
+				fprintf(stdout, "True");
+			break;
+
+		case DBUS_TYPE_BYTE:
+			dbus_message_iter_get_basic(iter, &c);
+			fprintf(stdout, "%d", c);
+			break;
+
+		case DBUS_TYPE_UINT16:
+		case DBUS_TYPE_UINT32:
+			dbus_message_iter_get_basic(iter, &i);
+			fprintf(stdout, "%d", i);
+			break;
+
+		case DBUS_TYPE_DOUBLE:
+			dbus_message_iter_get_basic(iter, &d);
+			fprintf(stdout, "%f", d);
+			break;
+
+		default:
+			fprintf(stdout, "<type %c>", arg_type);
+			break;
+		}
+
+		if (dbus_message_iter_has_next(iter) == TRUE)
+			fprintf(stdout, "%s", sep);
+
+		dbus_message_iter_next(iter);
+	}
+}
+
+struct dbus_callback {
+	connmanctl_dbus_method_return_func_t cb;
+	void *user_data;
+};
+
+static void dbus_method_reply(DBusPendingCall *call, void *user_data)
+{
+	struct dbus_callback *callback = user_data;
+	DBusMessage *reply;
+	DBusMessageIter iter;
+
+	reply = dbus_pending_call_steal_reply(call);
+	if (dbus_message_get_type(reply) == DBUS_MESSAGE_TYPE_ERROR) {
+		DBusError err;
+
+		dbus_error_init(&err);
+		dbus_set_error_from_message(&err, reply);
+
+		callback->cb(NULL, err.message, callback->user_data);
+
+		dbus_error_free(&err);
+		goto end;
+	}
+
+	dbus_message_iter_init(reply, &iter);
+	callback->cb(&iter, NULL, callback->user_data);
+
+end:
+	g_free(callback);
+	dbus_message_unref(reply);
+}
+
+int __connmanctl_dbus_method_call(DBusConnection *connection, const char *path,
+		const char *interface, const char *method,
+		connmanctl_dbus_method_return_func_t cb, void * user_data,
+		int arg1, ...)
+{
+	int res = -ENXIO;
+	DBusMessage *message;
+	va_list args;
+	DBusPendingCall *call;
+	struct dbus_callback *callback;
+
+	message = dbus_message_new_method_call("net.connman", path,
+			interface, method);
+
+	if (message == NULL)
+		return -ENOMEM;
+
+	va_start(args, arg1);
+	dbus_message_append_args_valist(message, arg1, args);
+	va_end(args);
+
+	if (dbus_connection_send_with_reply(connection, message, &call,
+					TIMEOUT) == FALSE)
+		goto end;
+
+        if (call == NULL)
+                goto end;
+
+	if (cb != NULL) {
+		callback = g_new0(struct dbus_callback, 1);
+		callback->cb = cb;
+		callback->user_data = user_data;
+		dbus_pending_call_set_notify(call, dbus_method_reply,
+				callback, NULL);
+		res = -EINPROGRESS;
+	}
+
+end:
+        dbus_message_unref(message);
+	return res;
+}