Add resolver plugin using resolvconf helper tool

1 files changed, 118 insertions, 0 deletions

diff --git a/plugins/resolvconf.c b/plugins/resolvconf.c
new file mode 100644
index 00000000..732db4f0
--- /dev/null
+++ b/plugins/resolvconf.c
@@ -0,0 +1,118 @@
+/*
+ *
+ *  Connection Manager
+ *
+ *  Copyright (C) 2007  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 version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  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
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <net/if.h>
+
+#include <connman/plugin.h>
+#include <connman/resolver.h>
+#include <connman/log.h>
+
+static int resolvconf_append(struct connman_iface *iface, const char *nameserver)
+{
+	struct ifreq ifr;
+	char cmd[128];
+	int sk, err;
+
+	sk = socket(PF_INET, SOCK_DGRAM, 0);
+	if (sk < 0)
+		return -1;
+
+	memset(&ifr, 0, sizeof(ifr));
+	ifr.ifr_ifindex = iface->index;
+
+	err = ioctl(sk, SIOCGIFNAME, &ifr);
+
+	close(sk);
+
+	if (err < 0)
+		return -1;
+
+	DBG("ifname %s", ifr.ifr_name);
+
+	snprintf(cmd, sizeof(cmd), "echo \"nameserver %s\" | resolvconf -a %s",
+						nameserver, ifr.ifr_name);
+
+	DBG("%s", cmd);
+
+	err = system(cmd);
+
+	return 0;
+}
+
+static int resolvconf_remove(struct connman_iface *iface)
+{
+	struct ifreq ifr;
+	char cmd[128];
+	int sk, err;
+
+	sk = socket(PF_INET, SOCK_DGRAM, 0);
+	if (sk < 0)
+		return -1;
+
+	memset(&ifr, 0, sizeof(ifr));
+	ifr.ifr_ifindex = iface->index;
+
+	err = ioctl(sk, SIOCGIFNAME, &ifr);
+
+	close(sk);
+
+	if (err < 0)
+		return -1;
+
+	DBG("ifname %s", ifr.ifr_name);
+
+	snprintf(cmd, sizeof(cmd), "resolvconf -d %s", ifr.ifr_name);
+
+	DBG("%s", cmd);
+
+	err = system(cmd);
+
+	return 0;
+}
+
+static struct connman_resolver_driver resolvconf_driver = {
+	.name		= "resolvconf",
+	.append		= resolvconf_append,
+	.remove		= resolvconf_remove,
+};
+
+static int resolvconf_init(void)
+{
+	return connman_resolver_register(&resolvconf_driver);
+}
+
+static void resolvconf_exit(void)
+{
+	connman_resolver_unregister(&resolvconf_driver);
+}
+
+CONNMAN_PLUGIN_DEFINE("resolvconf", "Name resolver plugin", VERSION,
+					resolvconf_init, resolvconf_exit)