mirror of
https://github.com/YunoHost-Apps/hotspot_ynh.git
synced 2024-09-03 19:25:53 +02:00
590 lines
16 KiB
Bash
590 lines
16 KiB
Bash
#!/bin/bash
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#
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# Wifi Hotspot app for YunoHost
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# Copyright (C) 2015 Julien Vaubourg <julien@vaubourg.com>
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# Contribute at https://github.com/labriqueinternet/hotspot_ynh
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Functions
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## State functions
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has_vpnclient_app() {
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[ -e /tmp/.ynh-vpnclient-started ]
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}
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has_ip6delegatedprefix() {
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i=${1}
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[[ -n "${ynh_ip6_net[${i}]}" ]] && [[ "${ynh_ip6_net[${i}]}" != "none" ]]
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}
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ip6addrfromdelegatedprefix() {
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i=${1}
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echo "${ynh_ip6_net[${i}]}${i}001"
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}
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is_nat_set() {
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internet_device=${1}
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iptables -w -nvt nat -L POSTROUTING | grep MASQUERADE | grep -q "${internet_device}"
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}
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is_ip4nataddr_set() {
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i=${1}
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dev=$(devfromid "${i}")
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ip address show dev "${dev}" 2> /dev/null | grep -q "${ynh_ip4_nat_prefix[${i}]}.1/24"
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}
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is_ip6addr_set() {
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i=${1}
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dev=$(devfromid "${i}")
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ip address show dev "${dev}" 2> /dev/null | grep -q "$(ip6addrfromdelegatedprefix $i)/64"
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}
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is_ip6firewall_set() {
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i=${1}
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dev=$(devfromid "${i}")
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ip6tables -w -nvL FORWARD | grep DROP | grep -q "${dev}"
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}
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is_forwarding_set() {
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ip6=$(sysctl net.ipv6.conf.all.forwarding | awk '{ print $NF; }')
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ip4=$(sysctl net.ipv4.conf.all.forwarding | awk '{ print $NF; }')
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[ "${ip6}" -eq 1 -a "${ip4}" -eq 1 ]
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}
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is_dhcpd6_running() {
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i=${1}
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$(ps aux | grep "dhcpdv6-ssid${i}" | grep -qv grep)
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}
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is_dhcpd4_running() {
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i=${1}
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$(ps aux | grep "dhcpdv4-ssid${i}" | grep -qv grep)
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}
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is_hostapd_running() {
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systemctl is-active hostapd &> /dev/null
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}
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is_running() {
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for i in $(seq 0 $((${ynh_multissid} - 1))); do
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( has_ip6delegatedprefix ${i} && is_ip6addr_set ${i}\
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&& ( [ "${ynh_ip6_firewall[${i}]}" -eq 1 ] && is_ip6firewall_set ${i} || [ "${ynh_ip6_firewall[${i}]}" -eq 0 ] )\
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&& is_dhcpd6_running ${i} || ! has_ip6delegatedprefix ${i} )\
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&& is_ip4nataddr_set ${i} && is_dhcpd4_running ${i}
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if [ ! $? -eq 0 ]; then
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return 1
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fi
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done
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is_hostapd_running && is_forwarding_set && ( [ -z "${new_internet_device}" ] || is_nat_set "${new_internet_device}" )
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}
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## Setters
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set_nat() {
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internet_device=${1}
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iptables -w -t nat -A POSTROUTING -o "${internet_device}" -j MASQUERADE
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}
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set_ip4nataddr() {
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i=${1}
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dev=$(devfromid "${i}")
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ip address add "${ynh_ip4_nat_prefix[${i}]}.1/24" dev "${dev}"
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}
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set_ip6addr() {
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i=${1}
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dev=$(devfromid "${i}")
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ip address delete "$(ip6addrfromdelegatedprefix $i)/64" dev tun0 &> /dev/null
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ip address add "$(ip6addrfromdelegatedprefix $i)/64" dev "${dev}"
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}
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set_ip6firewall() {
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i=${1}
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dev=$(devfromid "${i}")
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ip6tables -w -A FORWARD -i "${dev}" -j ACCEPT
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ip6tables -w -A FORWARD -o "${dev}" -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
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ip6tables -w -A FORWARD -o "${dev}" -j DROP
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}
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set_forwarding() {
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sysctl -w net.ipv6.conf.all.forwarding=1 > /dev/null
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sysctl -w net.ipv4.conf.all.forwarding=1 > /dev/null
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}
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start_dhcpd6() {
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i=${1}
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dev=$(devfromid "${i}")
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cp /etc/dnsmasq.dhcpd/dhcpdv6{.conf.tpl,-ssid${i}.conf}
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sed "s|__WIFI_DEVICE__|${dev}|g" -i /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf
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sed "s|__IP6_NET__|${ynh_ip6_net[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf
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sed "s|__IP6_DNS__|${ynh_ip6_dns[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf
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dnsmasq -C /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf -p0
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}
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start_dhcpd4() {
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i=${1}
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dev=$(devfromid "${i}")
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cp /etc/dnsmasq.dhcpd/dhcpdv4{.conf.tpl,-ssid${i}.conf}
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sed "s|__IP4_DNS__|${ynh_ip4_dns[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf
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sed "s|__WIFI_DEVICE__|${dev}|g" -i /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf
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sed "s|__IP4_NAT_PREFIX__|${ynh_ip4_nat_prefix[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf
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dnsmasq -C /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf -p0
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}
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configure_hostapd() {
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ethaddr=$(ip link show dev "${ynh_wifi_device}" | grep link/ether | awk -F: '{ printf "02:%s:%s:%s:%s:00", $2, $3, $4, $5 }')
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ip link set addr "${ethaddr}" dev "${ynh_wifi_device}"
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cp /etc/hostapd/hostapd.base.conf /etc/hostapd/hostapd.conf
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sed "s|__WIFI_DEVICE__|${ynh_wifi_device}|g" -i /etc/hostapd/hostapd.conf
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sed "s|__WIFI_CHANNEL__|${ynh_wifi_channel}|g" -i /etc/hostapd/hostapd.conf
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sed "s|__N_COMMENT__||g" -i /etc/hostapd/hostapd.conf
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for i in $(seq 0 $((${ynh_multissid} - 1))); do
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[ "${ynh_wifi_secure[${i}]}" -eq 1 ] && local sec_comment="" || local sec_comment="#"
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[ "${i}" -eq 0 ] && local bss_comment="#" || local bss_comment=""
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cp /etc/hostapd/hostapd.accesspoint.conf /etc/hostapd/hostapd.conf.tmp
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sed "s|__WIFI_INTERFACE__|hotspot${i}|g" -i /etc/hostapd/hostapd.conf.tmp
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sed "s|__WIFI_SSID__|${ynh_wifi_ssid[${i}]}|g" -i /etc/hostapd/hostapd.conf.tmp
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sed "s|__WIFI_PASSPHRASE__|${ynh_wifi_passphrase[${i}]}|g" -i /etc/hostapd/hostapd.conf.tmp
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sed "s|__SEC_COMMENT__|${sec_comment}|g" -i /etc/hostapd/hostapd.conf.tmp
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sed "s|__BSS_COMMENT__|${bss_comment}|g" -i /etc/hostapd/hostapd.conf.tmp
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cat /etc/hostapd/hostapd.conf.tmp >> /etc/hostapd/hostapd.conf
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rm /etc/hostapd/hostapd.conf.tmp
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done
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}
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## Unsetters
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unset_nat() {
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internet_device=${1}
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iptables -w -t nat -D POSTROUTING -o "${internet_device}" -j MASQUERADE
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}
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unset_ip4nataddr() {
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i=${1}
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dev=$(devfromid "${i}")
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ip address delete "${ynh_ip4_nat_prefix[${i}]}.1/24" dev "${dev}"
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}
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unset_ip6addr() {
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i=${1}
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dev=$(devfromid "${i}")
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ip address delete "$(ip6addrfromdelegatedprefix $i)/64" dev "${dev}"
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}
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unset_ip6firewall() {
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i=${1}
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dev=$(devfromid "${i}")
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ip6tables -w -D FORWARD -i "${dev}" -j ACCEPT
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ip6tables -w -D FORWARD -o "${dev}" -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
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ip6tables -w -D FORWARD -o "${dev}" -j DROP
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}
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unset_forwarding() {
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sysctl -w net.ipv6.conf.all.forwarding=0 > /dev/null
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sysctl -w net.ipv4.conf.all.forwarding=0 > /dev/null
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}
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stop_dhcpd6() {
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kill $(ps aux | grep 'dhcpdv6-ssid' | grep -v grep | awk '{ print $2 }')
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rm -f /etc/dnsmasq.d/dhcpdv6-ssid*.conf
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}
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stop_dhcpd4() {
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kill $(ps aux | grep 'dhcpdv4-ssid' | grep -v grep | awk '{ print $2 }')
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rm -f /etc/dnsmasq.d/dhcpdv4-ssid*.conf
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}
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stop_hostapd() {
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systemctl stop hostapd
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}
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## Tools
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ynh_setting_get() {
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APP="$1" KEY="$2" python3 - <<EOF
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import os, yaml, sys
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app = os.environ['APP']
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key = os.environ['KEY']
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setting_file = "/etc/yunohost/apps/%s/settings.yml" % app
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assert os.path.exists(setting_file), "Setting file %s does not exists ?" % setting_file
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with open(setting_file) as f:
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settings = yaml.safe_load(f)
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if key in settings:
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print(settings[key])
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EOF
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}
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ynh_setting_set() {
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# This is a partial copypasta of the official ynh_app_setting internal helper
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# In particular, we do this instead of relying on 'yunohost app setting' for
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# performance reasons (it takes a few second to run every yunohost commands)
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# and to remove the need for the infamous '--need-lock' option/issue.
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APP="$1" KEY="$2" VALUE="${3:-}" python3 - <<EOF
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import os, yaml, sys
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app = os.environ['APP']
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key, value = os.environ['KEY'], os.environ.get('VALUE', None)
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setting_file = "/etc/yunohost/apps/%s/settings.yml" % app
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assert os.path.exists(setting_file), "Setting file %s does not exists ?" % setting_file
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with open(setting_file) as f:
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settings = yaml.load(f)
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settings[key] = value
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with open(setting_file, "w") as f:
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yaml.safe_dump(settings, f, default_flow_style=False)
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EOF
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}
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devfromid() {
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i=${1}
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if [ "${i}" -eq 0 ]; then
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echo "${ynh_wifi_device}"
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else
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echo "hotspot${i}"
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fi
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}
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if [ "$1" != restart ]; then
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# Variables
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echo -n "Retrieving Yunohost settings... "
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ynh_service_enabled=$(systemctl is-enabled ynh-hotspot)
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ynh_wifi_device=$(ynh_setting_get hotspot wifi_device)
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ynh_wifi_channel=$(ynh_setting_get hotspot wifi_channel)
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ynh_multissid=$(ynh_setting_get hotspot multissid)
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IFS='|' read -a ynh_wifi_ssid <<< "$(ynh_setting_get hotspot wifi_ssid)"
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IFS='|' read -a ynh_wifi_secure <<< "$(ynh_setting_get hotspot wifi_secure)"
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IFS='|' read -a ynh_wifi_passphrase <<< "$(ynh_setting_get hotspot wifi_passphrase)"
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IFS='|' read -a ynh_ip6_firewall <<< "$(ynh_setting_get hotspot ip6_firewall)"
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IFS='|' read -a ynh_ip6_net <<< "$(ynh_setting_get hotspot ip6_net)"
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IFS='|' read -a ynh_dns <<< "$(ynh_setting_get hotspot dns)"
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IFS='|' read -a ynh_ip4_nat_prefix <<< "$(ynh_setting_get hotspot ip4_nat_prefix)"
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for i in $(seq 0 $((${ynh_multissid} - 1))); do
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ynh_ip6_dns[${i}]=""
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ynh_ip4_dns[${i}]=""
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for ip in $(echo "${ynh_dns[${i}]}" | tr ',' ' '); do
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if [[ "$ip" == *":"* ]]
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then
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ynh_ip6_dns[${i}]+="[$ip],"
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else
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ynh_ip4_dns[${i}]+="$ip,"
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fi
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done
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# Remove trailing ,
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ynh_ip6_dns[${i}]="${ynh_ip6_dns[${i}]%%,}"
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ynh_ip4_dns[${i}]="${ynh_ip4_dns[${i}]%%,}"
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done
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old_internet_device=$(ynh_setting_get hotspot internet_device)
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new_internet_device=$(ip route get 1.2.3.4 | awk '{ print $5; }')
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# Switch the NAT interface if there is a VPN
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ip link show dev tun0 &> /dev/null
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if [ "$?" -eq 0 ]; then
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new_internet_device=tun0
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fi
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echo "OK"
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fi
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# Script
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case "$1" in
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start)
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if is_running; then
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echo "Already started"
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elif [ "${ynh_service_enabled}" != "enabled" ]; then
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echo "Disabled service"
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else
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if [ -z "${ynh_wifi_device}" ]; then
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echo "[ERR] No wifi device selected. Make sure your wifi antenna is plugged-in / available and select it in the Hotspot admin"
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exitcode=1
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fi
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echo "[hotspot] Starting..."
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touch /tmp/.ynh-hotspot-started
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# Check old state of the ipv4 NAT settings
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if [ ! -z "${old_internet_device}" -a "${new_internet_device}" != "${old_internet_device}" ]\
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&& is_nat_set "${old_internet_device}"; then
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unset_nat "${old_internet_device}"
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fi
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# Set ipv4 NAT
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if [ ! -z "${new_internet_device}" ] && ! is_nat_set "${new_internet_device}"; then
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echo "Set NAT"
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set_nat "${new_internet_device}"
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fi
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# Set forwarding for ipv6 and ipv4
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if ! is_forwarding_set; then
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echo "Set forwarding"
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set_forwarding
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fi
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# Run hostapd
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if ! is_hostapd_running; then
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echo "Run hostapd"
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start_hostapd ${i}
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if [ ! $? -eq 0 ]; then
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journalctl -u hostapd -n 100 --no-hostname --no-pager
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exit 1
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fi
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if [ "${ynh_multissid}" -gt 1 ]; then
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i=0; false || while [ $? -ne 0 ]; do
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sleep 1 && (( i++ ))
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[ ${i} -gt 20 ] && stop_hostapd
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[ ${i} -gt 20 ] && exit 1
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ip link show dev hotspot1 &> /dev/null
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done
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else
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sleep 1
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fi
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fi
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# For each registred ssid
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for i in $(seq 0 $((${ynh_multissid} - 1))); do
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# Set ipv4 NAT address
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if ! is_ip4nataddr_set ${i}; then
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echo "hotspot${i}: Set IPv4 NAT address"
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set_ip4nataddr ${i}
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fi
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# Set the ipv6 address
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if has_ip6delegatedprefix ${i} && ! is_ip6addr_set ${i}; then
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echo "hotspot${i}: Set IPv6 address"
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set_ip6addr ${i}
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fi
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# Set ipv6 firewalling
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if has_ip6delegatedprefix ${i} && [ "${ynh_ip6_firewall[${i}]}" -eq 1 ] && ! is_ip6firewall_set ${i}; then
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echo "hotspot${i}: Set IPv6 firewalling"
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set_ip6firewall ${i}
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fi
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# Run DHCPv6 server
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if has_ip6delegatedprefix ${i} && ! is_dhcpd6_running ${i}; then
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echo "hotspot${i}: Start the NDP and DHCPv6 server (dnsmasq)"
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start_dhcpd6 ${i}
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fi
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# Run DHCPv4 server
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if ! is_dhcpd4_running ${i}; then
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echo "hotspot${i}: Start the DHCPv4 server (dnsmasq)"
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start_dhcpd4 ${i}
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fi
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done
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# Update dynamic settings
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ynh_setting_set hotspot internet_device "${new_internet_device}"
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fi
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;;
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stop)
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echo "[hotspot] Stopping..."
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rm -f /tmp/.ynh-hotspot-started
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if [ ! -z "${old_internet_device}" ] && is_nat_set "${old_internet_device}"; then
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echo "Unset NAT"
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unset_nat "${old_internet_device}"
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fi
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if is_forwarding_set; then
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echo "Unset forwarding"
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unset_forwarding
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fi
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for i in $(seq 0 $((${ynh_multissid} - 1))); do
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if is_ip4nataddr_set ${i}; then
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echo "hotspot${i}: Unset IPv4 NAT address"
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unset_ip4nataddr ${i}
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fi
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if has_ip6delegatedprefix ${i} && is_ip6addr_set ${i}; then
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echo "hotspot${i}: Unset IPv6 address"
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unset_ip6addr ${i}
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fi
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if has_ip6delegatedprefix ${i} && [ "${ynh_ip6_firewall[${i}]}" -eq 1 ] && is_ip6firewall_set ${i}; then
|
|
echo "hotspot${i}: Unset IPv6 firewalling"
|
|
unset_ip6firewall ${i}
|
|
fi
|
|
|
|
if is_dhcpd6_running ${i}; then
|
|
echo "hotspot${i}: Stop the NDP and DHCPv6 server (dnsmasq)"
|
|
stop_dhcpd6 ${i}
|
|
fi
|
|
|
|
if is_dhcpd4_running ${i}; then
|
|
echo "hotspot${i}: Stop the DHCPv4 server (dnsmasq)"
|
|
stop_dhcpd4 ${i}
|
|
fi
|
|
done
|
|
|
|
if is_hostapd_running; then
|
|
echo "Stop hostapd"
|
|
stop_hostapd
|
|
fi
|
|
|
|
# Fix configuration
|
|
if has_vpnclient_app; then
|
|
ynh-vpnclient start
|
|
fi
|
|
;;
|
|
restart)
|
|
$0 stop
|
|
$0 start
|
|
;;
|
|
status)
|
|
exitcode=0
|
|
|
|
if [ "${ynh_service_enabled}" != "enabled" ]; then
|
|
echo "[ERR] Hotspot Service disabled"
|
|
exitcode=1
|
|
fi
|
|
|
|
if [ -z "${ynh_wifi_device}" ]; then
|
|
echo "[ERR] No wifi device selected. Make sure your wifi antenna is plugged-in / available and select it in the Hotspot admin"
|
|
exitcode=1
|
|
fi
|
|
|
|
echo "[INFO] Autodetected internet interface: ${new_internet_device} (last start: ${old_internet_device})"
|
|
|
|
if is_nat_set "${new_internet_device}"; then
|
|
echo "[OK] IPv4 NAT set"
|
|
else
|
|
if [ -z "${new_internet_device}" ]; then
|
|
echo "[INFO] No IPv4 NAT set (no internet interface)"
|
|
else
|
|
echo "[ERR] No IPv4 NAT set"
|
|
fi
|
|
exitcode=1
|
|
fi
|
|
|
|
if is_forwarding_set; then
|
|
echo "[OK] IPv6/IPv4 forwarding set"
|
|
else
|
|
echo "[ERR] No IPv6/IPv4 forwarding set"
|
|
exitcode=1
|
|
fi
|
|
|
|
if is_hostapd_running; then
|
|
echo "[OK] Hostapd is running"
|
|
else
|
|
echo "[ERR] Hostapd is not running"
|
|
exitcode=1
|
|
fi
|
|
|
|
for i in $(seq 0 $((${ynh_multissid} - 1))); do
|
|
if has_ip6delegatedprefix ${i}; then
|
|
echo "[INFO] hotspot${i}: IPv6 delegated prefix found"
|
|
echo "[INFO] hotspot${i}: IPv6 address computed from the delegated prefix: $(ip6addrfromdelegatedprefix $i)"
|
|
|
|
if is_ip6addr_set ${i}; then
|
|
echo "[OK] hotspot${i}: IPv6 address set"
|
|
else
|
|
echo "[ERR] hotspot${i}: No IPv6 address set"
|
|
exitcode=1
|
|
fi
|
|
|
|
if is_ip6firewall_set ${i}; then
|
|
echo "[OK] hotspot${i}: IPv6 firewalling set"
|
|
else
|
|
if [ "${ynh_ip6_firewall[${i}]}" -eq 1 ]; then
|
|
echo "[ERR] hotspot${i}: No IPv6 firewalling set"
|
|
else
|
|
echo "[INFO] hotspot${i}: No IPv6 firewalling set"
|
|
fi
|
|
exitcode=1
|
|
fi
|
|
|
|
if is_dhcpd6_running ${i}; then
|
|
echo "[OK] hotspot${i}: NDP and DHCPv6 server (dnsmasq) are running"
|
|
else
|
|
echo "[ERR] hotspot${i}: NDP and DHCPv6 server (dnsmasq) are not running"
|
|
exitcode=1
|
|
fi
|
|
else
|
|
echo "[INFO] hotspot${i}: No IPv6 delegated prefix found"
|
|
fi
|
|
|
|
if is_dhcpd4_running ${i}; then
|
|
echo "[OK] hotspot${i}: DHCPv4 server (dnsmasq) is running"
|
|
else
|
|
echo "[ERR] hotspot${i}: DHCPv4 (dnsmasq) is not running"
|
|
exitcode=1
|
|
fi
|
|
|
|
if is_ip4nataddr_set ${i}; then
|
|
echo "[OK] hotspot${i}: IPv4 NAT address set"
|
|
else
|
|
echo "[ERR] hotspot${i}: No IPv4 NAT address set"
|
|
exitcode=1
|
|
fi
|
|
done
|
|
|
|
exit ${exitcode}
|
|
;;
|
|
*)
|
|
echo "Usage: $0 {start|stop|restart|status}"
|
|
exit 1
|
|
;;
|
|
esac
|
|
|
|
exit 0
|