85 lines
3.1 KiB
Bash
85 lines
3.1 KiB
Bash
#!/bin/sh
|
|
#
|
|
# Copyright (C) 2019-2023, Digi International Inc.
|
|
#
|
|
# This Source Code Form is subject to the terms of the Mozilla Public
|
|
# License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
# file, you can obtain one at http://mozilla.org/MPL/2.0/.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
#
|
|
# Description: create P2P link
|
|
#
|
|
# Configuration variables in '/etc/network/interfaces':
|
|
# Mandatory:
|
|
# p2p-peer-mac <peer-mac>
|
|
# Optional:
|
|
# p2p-discover-window <interval-secs>
|
|
# p2p-freq <channel-freq>
|
|
# p2p-local-address <local-ip>
|
|
# p2p-local-netmask <local-netmask>
|
|
# p2p-network-id <wpa_supplicant_conf P2P network ID>
|
|
#
|
|
|
|
# Execute only for the P2P interface
|
|
[ "${IFACE}" = "##WLAN_P2P_INTERFACE##" ] || exit 0
|
|
|
|
log() {
|
|
if type "systemd-cat" >/dev/null 2>/dev/null; then
|
|
systemd-cat -p "${1}" -t p2plink printf "%s" "${2}"
|
|
else
|
|
logger -p "${1}" -t p2plink "${2}"
|
|
fi
|
|
}
|
|
|
|
# Exit without error if the peer MAC address is not available
|
|
[ -z "${IF_P2P_PEER_MAC}" ] && { log info "Peer MAC address not available"; exit 0; }
|
|
|
|
# wpa_cli reports lowercase MACs, so convert to lowercase
|
|
IF_P2P_PEER_MAC="$(echo "${IF_P2P_PEER_MAC}" | tr 'A-F' 'a-f')"
|
|
|
|
if [ "${MODE}" = "start" ]; then
|
|
wpa_cli -i"${IFACE}" p2p_find && sleep 1
|
|
for _ in $(seq "${IF_P2P_DISCOVER_WINDOW:=120}"); do
|
|
wpa_cli -i"${IFACE}" p2p_peers discovered | grep -i -qs "${IF_P2P_PEER_MAC}" && { peer_found="1"; break; }
|
|
sleep 1
|
|
done
|
|
wpa_cli -i"${IFACE}" p2p_stop_find
|
|
[ -z "${peer_found}" ] && { log err "p2p discover: peer NOT found"; exit 1; }
|
|
|
|
# Peer found, establish the link
|
|
log info "establish P2P link"
|
|
wpa_cli -i"${IFACE}" p2p_connect "${IF_P2P_PEER_MAC}" pbc ${IF_P2P_NETWORK_ID:+persistent=${IF_P2P_NETWORK_ID}} ${IF_P2P_FREQ:+freq=${IF_P2P_FREQ}} auto
|
|
for _ in $(seq 20); do
|
|
if wpa_cli status 2>&1 | grep -qs "^wpa_state=COMPLETED$"; then
|
|
if wpa_cli status 2>&1 | grep -qs "^mode=P2P GO$"; then
|
|
# P2P GO side: verify the remote peer has connected
|
|
wpa_cli all_sta 2>&1 | grep -i -qs "^p2p_device_addr=${IF_P2P_PEER_MAC}$" && p2p_link_found="1"
|
|
elif wpa_cli status 2>&1 | grep -qs "^mode=station$"; then
|
|
p2p_link_found="1"
|
|
fi
|
|
fi
|
|
if [ -n "${p2p_link_found}" ]; then
|
|
# Configure the newly created interface
|
|
if [ -n "${IF_P2P_LOCAL_ADDRESS}" ]; then
|
|
for P2P_IFNAME in $(basename $(echo /sys/class/net/p2p-"${IFACE}"-*)); do
|
|
echo "${P2P_IFNAME}" | grep -qs "p2p-${IFACE}-\*" && continue
|
|
ifconfig "${P2P_IFNAME}" "${IF_P2P_LOCAL_ADDRESS}" ${IF_P2P_LOCAL_NETMASK:+netmask ${IF_P2P_LOCAL_NETMASK}} up
|
|
break
|
|
done
|
|
fi
|
|
break
|
|
fi
|
|
sleep 1
|
|
done
|
|
|
|
# Give 'ifupdown' a proper error return value if 'wpa_state' is NOT COMPLETED
|
|
[ -n "${p2p_link_found}" ] && true || false
|
|
fi
|