From 0aaf98a35432cce0115d43c69ffd7f25d2892bda Mon Sep 17 00:00:00 2001
From: Denis Kenzior <denkenz@gmail.com>
Date: Tue, 13 Apr 2010 15:14:40 -0500
Subject: ppp: Get rid of net_open and net_close

There really isn't a need for these now
---
 gatchat/ppp_net.c | 82 ++++++++++++++++++++++---------------------------------
 1 file changed, 33 insertions(+), 49 deletions(-)

(limited to 'gatchat/ppp_net.c')

diff --git a/gatchat/ppp_net.c b/gatchat/ppp_net.c
index 8b2fc8dd..8d1a5d48 100644
--- a/gatchat/ppp_net.c
+++ b/gatchat/ppp_net.c
@@ -55,13 +55,6 @@ void ppp_net_process_packet(struct ppp_net *net, guint8 *packet)
 	gsize bytes_written;
 	guint16 len;
 
-	/*
-	 * since ppp_net_open can fail, we need to make sure
-	 * channel is valid
-	 */
-	if (net->channel == NULL)
-		return;
-
 	/* find the length of the packet to transmit */
 	len = get_host_short(&packet[2]);
 	status = g_io_channel_write_chars(net->channel, (gchar *) packet,
@@ -99,81 +92,72 @@ static gboolean ppp_net_callback(GIOChannel *channel, GIOCondition cond,
 	return TRUE;
 }
 
-void ppp_net_close(struct ppp_net *net)
+const char *ppp_net_get_interface(struct ppp_net *net)
 {
-	g_source_remove(net->watch);
-	g_io_channel_unref(net->channel);
+	return net->if_name;
 }
 
-void ppp_net_open(struct ppp_net *net)
+struct ppp_net *ppp_net_new(GAtPPP *ppp)
 {
+	struct ppp_net *net;
 	int fd;
 	struct ifreq ifr;
-	GIOChannel *channel;
+	GIOChannel *channel = NULL;
 	int err;
 
+	net = g_try_new0(struct ppp_net, 1);
 	if (net == NULL)
-		return;
+		return NULL;
 
 	/* open a tun interface */
 	fd = open("/dev/net/tun", O_RDWR);
-	if (fd < 0) {
-		g_printerr("error opening tun\n");
-		return;
-	}
+	if (fd < 0)
+		goto error;
 
 	memset(&ifr, 0, sizeof(ifr));
 	ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
 	strcpy(ifr.ifr_name, "ppp%d");
+
 	err = ioctl(fd, TUNSETIFF, (void *)&ifr);
-	if (err < 0) {
-		g_printerr("error %d setting ifr\n", err);
-		close(fd);
-		return;
-	}
+	if (err < 0)
+		goto error;
+
 	net->if_name = strdup(ifr.ifr_name);
 
 	/* create a channel for reading and writing to this interface */
 	channel = g_io_channel_unix_new(fd);
-	if (!channel) {
-		g_printerr("Error creating I/O Channel to TUN device\n");
-		close(fd);
-		return;
-	}
-	if (!g_at_util_setup_io(channel, G_IO_FLAG_NONBLOCK)) {
-		g_io_channel_unref(channel);
-		return;
-	}
-	net->channel = channel;
+	if (channel == NULL)
+		goto error;
+
+	if (!g_at_util_setup_io(channel, G_IO_FLAG_NONBLOCK))
+		goto error;
+
 	g_io_channel_set_buffered(channel, FALSE);
+
+	net->channel = channel;
 	net->watch = g_io_add_watch(channel,
 			G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
 			ppp_net_callback, net);
-}
-
-const char *ppp_net_get_interface(struct ppp_net *net)
-{
-	return net->if_name;
-}
+	net->ppp = ppp;
 
-struct ppp_net *ppp_net_new(GAtPPP *ppp)
-{
-	struct ppp_net *net;
+	return net;
 
-	net = g_try_new0(struct ppp_net, 1);
-	if (net == NULL)
-		return NULL;
+error:
+	if (channel)
+		g_io_channel_unref(channel);
 
-	net->ppp = ppp;
+	if (fd >= 0)
+		close(fd);
 
-	return net;
+	g_free(net);
+	return NULL;
 }
 
 void ppp_net_free(struct ppp_net *net)
 {
-	/* cleanup tun interface */
-	ppp_net_close(net);
+	g_source_remove(net->watch);
+	g_io_channel_unref(net->channel);
 
-	/* free self */
+	g_free(net->if_name);
 	g_free(net);
 }
-- 
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