From 223d3fb192965618707a55b7b423d35f61fcf545 Mon Sep 17 00:00:00 2001
From: gonzalo- <gonzalo@x61.com.ar>
Date: Sun, 31 Oct 2021 15:16:53 +0100
Subject: [PATCH 1/3] add openbsd connection share

---
 scripts/openbsd_connection_share.sh | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 scripts/openbsd_connection_share.sh

diff --git a/scripts/openbsd_connection_share.sh b/scripts/openbsd_connection_share.sh
new file mode 100644
index 00000000..0def9f27
--- /dev/null
+++ b/scripts/openbsd_connection_share.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+USB_IFACE=$(ifconfig urndis0 | grep urndis0 | awk '{print $1}' | tr -d ':')
+USB_IP=${2:-10.0.0.1}
+
+if [ "${USB_IFACE}" == "urndis0" ]; then
+	ifconfig ${USB_IFACE} ${USB_IP}
+	sysctl -w net.inet.ip.forwarding=1
+	pfctl -e
+	echo "match out on egress inet from ${USB_IFACE}:network to any nat-to (egress:0)" | pfctl -f -
+	echo "sharing connecting from upstream interface to usb interface ${USB_IFACE} ..."
+else
+	echo "can't find usb interface with ip $USB_IP"
+	exit 1
+fi

From 359e501d3a409146b1809755be1a7e38d7d99b2a Mon Sep 17 00:00:00 2001
From: gonzalo- <gonzalo@x61.com.ar>
Date: Sun, 31 Oct 2021 15:18:50 +0100
Subject: [PATCH 2/3] Update openbsd_connection_share.sh

let's use USB_IFACE instead on the error message.
---
 scripts/openbsd_connection_share.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/openbsd_connection_share.sh b/scripts/openbsd_connection_share.sh
index 0def9f27..277202de 100644
--- a/scripts/openbsd_connection_share.sh
+++ b/scripts/openbsd_connection_share.sh
@@ -10,6 +10,6 @@ if [ "${USB_IFACE}" == "urndis0" ]; then
 	echo "match out on egress inet from ${USB_IFACE}:network to any nat-to (egress:0)" | pfctl -f -
 	echo "sharing connecting from upstream interface to usb interface ${USB_IFACE} ..."
 else
-	echo "can't find usb interface with ip $USB_IP"
+	echo "can't find usb interface with ip ${USB_IFACE}"
 	exit 1
 fi

From 6117133bbcff1bd3833db4ec0a3ffd8ced9ed8a7 Mon Sep 17 00:00:00 2001
From: gonzalo <gonzalo@x61.com.ar>
Date: Thu, 11 Nov 2021 14:51:54 +0100
Subject: [PATCH 3/3] lets reload pf.conf, and check for root just-in-case

---
 scripts/openbsd_connection_share.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/scripts/openbsd_connection_share.sh b/scripts/openbsd_connection_share.sh
index 277202de..fd20f44d 100644
--- a/scripts/openbsd_connection_share.sh
+++ b/scripts/openbsd_connection_share.sh
@@ -3,11 +3,16 @@
 USB_IFACE=$(ifconfig urndis0 | grep urndis0 | awk '{print $1}' | tr -d ':')
 USB_IP=${2:-10.0.0.1}
 
+if test $(whoami) != root; then
+	doas "$0" "$@"
+	exit $?
+fi
+
 if [ "${USB_IFACE}" == "urndis0" ]; then
 	ifconfig ${USB_IFACE} ${USB_IP}
 	sysctl -w net.inet.ip.forwarding=1
-	pfctl -e
 	echo "match out on egress inet from ${USB_IFACE}:network to any nat-to (egress:0)" | pfctl -f -
+	pfctl -f /etc/pf.conf
 	echo "sharing connecting from upstream interface to usb interface ${USB_IFACE} ..."
 else
 	echo "can't find usb interface with ip ${USB_IFACE}"