mirror of
https://github.com/YunoHost-Apps/hotspot_ynh.git
synced 2024-09-03 19:25:53 +02:00
508 lines
13 KiB
Bash
508 lines
13 KiB
Bash
#!/bin/bash
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### BEGIN INIT INFO
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# Provides: ynh-hotspot
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# Required-Start: $network $remote_fs $syslog yunohost-api
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# Required-Stop: $network $remote_fs $syslog
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Set prerequisites for wifi hotspot.
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# Description: Set prerequisites for wifi hotspot.
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### END INIT INFO
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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/jvaubourg/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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[ "${ynh_ip6_net[${i}]}" != none ]
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}
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is_nat_set() {
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internet_device=${1}
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iptables -nvt nat -L POSTROUTING | grep MASQUERADE | grep -q "${internet_device}"
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}
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is_ip4nataddr_set() {
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i=${1}
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ip address show dev "ssid${i}" 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=${1}
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ip address show dev "ssid${i}" 2> /dev/null | grep -q "${ynh_ip6_addr[${i}]}/64"
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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 "${ip4}" -eq 1 ]
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}
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is_dhcpd_running() {
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i=${1}
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$(ps aux | grep "dhcpdv.-ssid${i}" | grep -qv grep)
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}
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is_hostapd_running() {
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service hostapd status &> /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} || ! has_ip6delegatedprefix ${i} )\
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&& is_ip4nataddr_set ${i} && is_dhcpd_running ${i}
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if [ ! $? -eq 0 ]; then
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return 1
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fi
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done
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is_hostapd_running && is_forwarding_set && is_nat_set "${new_internet_device}"
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}
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## Setters
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set_nat() {
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internet_device=${1}
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iptables -t nat -A POSTROUTING -o "${internet_device}" -j MASQUERADE
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}
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set_ip4nataddr() {
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i=${1}
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ip address add "${ynh_ip4_nat_prefix[${i}]}.1/24" dev "ssid${i}"
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}
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set_ip6addr() {
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i=${1}
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ip address delete "${ynh_ip6_addr[${i}]}/64" dev tun0 &> /dev/null
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ip address add "${ynh_ip6_addr[${i}]}/64" dev "ssid${i}"
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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_dhcpd() {
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i=${1}
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rm -f /etc/dnsmasq.dhcpd/dhcpdv?-ssid*.conf
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if has_ip6delegatedprefix ${i}; then
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cp /etc/dnsmasq.dhcpdhcpd/dhcpdv6{.conf.tpl,-ssid${i}.conf}
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sed "s|<TPL:WIFI_DEVICE>|ssid${i}|g" -i /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf
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sed "s|<TPL:IP6_NET>|${ynh_ip6_net[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf
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sed "s|<TPL:IP6_DNS0>|${ynh_ip6_dns0[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv6-ssid${i}.conf
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sed "s|<TPL:IP6_DNS1>|${ynh_ip6_dns1[${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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fi
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cp /etc/dnsmasq.dhcpd/dhcpdv4{.conf.tpl,-ssid${i}.conf}
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sed "s|<TPL:IP4_DNS0>|${ynh_ip4_dns0[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf
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sed "s|<TPL:IP4_DNS1>|${ynh_ip4_dns1[${i}]}|g" -i /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf
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sed "s|<TPL:WIFI_DEVICE>|ssid${i}|g" -i /etc/dnsmasq.dhcpd/dhcpdv4-ssid${i}.conf
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sed "s|<TPL:IP4_NAT_PREFIX>|${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${i}.conf -p0
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}
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start_hostapd() {
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cp /etc/hostapd/hostapd.conf{.tpl1,}
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ip link set addr 02:42:42:13:37:00 dev "${ynh_wifi_device}"
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sed "s|<TPL:WIFI_DEVICE>|${ynh_wifi_device}|g" -i /etc/hostapd/hostapd.conf
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sed "s|<TPL:WIFI_CHANNEL>|${ynh_wifi_channel}|g" -i /etc/hostapd/hostapd.conf
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iwconfig "${ynh_wifi_device}" | grep -q 'n *ESSID'
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if [ $? -eq 0 ]; then
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sed "s|<TPL:N_COMMENT>||g" -i /etc/hostapd/hostapd.conf
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else
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sed "s|<TPL:N_COMMENT>|#|g" -i /etc/hostapd/hostapd.conf
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fi
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for i in $(seq 0 $((${ynh_multissid} - 1))); do
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cp /etc/hostapd/hostapd.conf{.tpl2,.tmp}
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sed "s|<TPL:WIFI_INTERFACE>|ssid${i}|g" -i /etc/hostapd/hostapd.conf.tmp
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sed "s|<TPL:WIFI_SSID>|${ynh_wifi_ssid[${i}]}|g" -i /etc/hostapd/hostapd.conf.tmp
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sed "s|<TPL:WIFI_PASSPHRASE>|${ynh_wifi_passphrase[${i}]}|g" -i /etc/hostapd/hostapd.conf.tmp
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if [ "${ynh_wifi_secure[${i}]}" -eq 1 ]; then
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sed "s|<TPL:SEC_COMMENT>||g" -i /etc/hostapd/hostapd.conf.tmp
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else
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sed "s|<TPL:SEC_COMMENT>|#|g" -i /etc/hostapd/hostapd.conf.tmp
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fi
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if [ "${i}" -eq 0 ]; then
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sed "s|<TPL:BSS_COMMENT>|#|g" -i /etc/hostapd/hostapd.conf.tmp
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else
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sed "s|<TPL:BSS_COMMENT>||g" -i /etc/hostapd/hostapd.conf.tmp
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fi
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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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service hostapd start
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}
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## Unsetters
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unset_nat() {
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internet_device=${1}
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iptables -t nat -D POSTROUTING -o "${internet_device}" -j MASQUERADE
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}
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unset_ip4nataddr() {
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i=${1}
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ip address delete "${ynh_ip4_nat_prefix[${i}]}.1/24" dev "ssid${i}"
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}
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unset_ip6addr() {
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i=${1}
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ip address delete "${ynh_ip6_addr[${i}]}/64" dev "ssid${i}"
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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_dhcpd() {
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kill $(ps aux | grep 'dhcpdv.-ssid' | grep -v grep | awk '{ print $2 }')
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rm -f /etc/dnsmasq.d/dhcpdv?-ssid*.conf
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}
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stop_hostapd() {
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service hostapd stop
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}
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## Tools
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moulinette_get() {
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var=${1}
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value=$(yunohost app setting hotspot "${var}")
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if [[ "${value}" =~ "An instance is already running" ]]; then
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echo "${value}" >&2
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exit 1
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fi
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echo "${value}"
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}
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moulinette_vpnclient_get() {
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var=${1}
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value=$(yunohost app setting vpnclient "${var}")
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if [[ "${value}" =~ "An instance is already running" ]]; then
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echo "${value}" >&2
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exit 1
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fi
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echo "${value}"
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}
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moulinette_set() {
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var=${1}
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value=${2}
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msg=$(yunohost app setting hotspot "${var}" -v "${value}")
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if [ ! $? -eq 0 ]; then
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echo "${msg}" >&2
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exit 1
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fi
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}
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if [ "$1" != restart ]; then
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# Restart php5-fpm at the first start (it needs to be restarted after the slapd start)
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if [ ! -e /tmp/.ynh-hotspot-boot ]; then
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touch /tmp/.ynh-hotspot-boot
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service php5-fpm restart
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fi
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# Variables
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echo -n "Retrieving Yunohost settings... "
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ynh_service_enabled=$(moulinette_get service_enabled)
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ynh_wifi_device=$(moulinette_get wifi_device)
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ynh_wifi_channel=$(moulinette_get wifi_channel)
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ynh_multissid=$(moulinette_get multissid)
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IFS='|' read -a ynh_wifi_ssid <<< "$(moulinette_get wifi_ssid)"
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IFS='|' read -a ynh_wifi_secure <<< "$(moulinette_get wifi_secure)"
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IFS='|' read -a ynh_wifi_passphrase <<< "$(moulinette_get wifi_passphrase)"
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IFS='|' read -a ynh_ip6_addr <<< "$(moulinette_get ip6_addr)"
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IFS='|' read -a ynh_ip6_net <<< "$(moulinette_get ip6_net)"
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IFS='|' read -a ynh_ip6_dns0 <<< "$(moulinette_get ip6_dns0)"
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IFS='|' read -a ynh_ip6_dns1 <<< "$(moulinette_get ip6_dns1)"
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IFS='|' read -a ynh_ip4_dns0 <<< "$(moulinette_get ip4_dns0)"
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IFS='|' read -a ynh_ip4_dns1 <<< "$(moulinette_get ip4_dns1)"
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IFS='|' read -a ynh_ip4_nat_prefix <<< "$(moulinette_get ip4_nat_prefix)"
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old_internet_device=$(moulinette_get internet_device)
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new_internet_device=$(ip route | awk '/default via/ { print $NF; }')
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# Switch the NAT interface if there is a VPN
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ip link show dev tun0 &> /dev/null
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if [ "$?" -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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# Check IPv6 delegated prefix from vpnclient
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# vpnclient_ip6_net=$(moulinette_vpnclient_get ip6_net)
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#
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# if [ ! -z "${vpnclient_ip6_addr}" ]; then
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# if [ "${ynh_ip6_net}" == none ]; then
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# ynh_ip6_net=$vpnclient_ip6_net
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# ynh_ip6_addr=$(moulinette_vpnclient_get ip6_addr)
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#
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# moulinette_set ip6_net "${ynh_ip6_net}"
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# moulinette_set ip6_addr "${ynh_ip6_addr}"
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# else
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# if [ "${ynh_ip6_net}" != "${vpnclient_ip6_net}" ]; then
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# echo "[WARN] The IPv6 delegated prefix is different from the vpnclient one"
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# fi
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# fi
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# fi
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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}" -eq 0 ]; then
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echo "Disabled service"
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else
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echo "[hotspot] Starting..."
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touch /tmp/.ynh-hotspot-started
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if [ "${new_internet_device}" == tun0 ]; then
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moulinette_set vpnclient yes
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else
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moulinette_set vpnclient no
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fi
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# Check old state of the ipv4 NAT settings
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if [ ! -z "${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 ! 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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exit 1
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fi
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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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[ ${i} -gt 20 ] && exit 1
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ip link show dev "mon.${ynh_wifi_device}" &> /dev/null
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done
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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 "SSID ${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 "SSID ${i}: Set IPv6 address"
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set_ip6addr ${i}
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fi
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# Run DHCP servers
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if ! is_dhcpd_running ${i}; then
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echo "SSID ${i}: Set DHCP servers (dnsmasq)"
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start_dhcpd ${i}
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fi
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done
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# Update dynamic settings
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moulinette_set internet_device "${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 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 "SSID ${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 "SSID ${i}: Unset IPv6 address"
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unset_ip6addr ${i}
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fi
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if is_dhcpd_running ${i}; then
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echo "SSID ${i}: Stop DHCP servers"
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stop_dhcpd ${i}
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fi
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done
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if is_hostapd_running; then
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echo "Stop hostapd"
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stop_hostapd
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fi
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if has_vpnclient_app; then
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service ynh-vpnclient start
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fi
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;;
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restart)
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$0 stop
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$0 start
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;;
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status)
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exitcode=0
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if [ "${ynh_service_enabled}" -eq 0 ]; then
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echo "[ERR] Hotspot Service disabled"
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exitcode=1
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fi
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echo "[INFO] Autodetected internet interface: ${new_internet_device} (last start: ${old_internet_device})"
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if is_nat_set "${new_internet_device}"; then
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echo "[OK] IPv4 NAT set"
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else
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echo "[ERR] No IPv4 NAT set"
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exitcode=1
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fi
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if is_forwarding_set; then
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echo "[OK] IPv6/IPv4 forwarding set"
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else
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echo "[ERR] No IPv6/IPv4 forwarding set"
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exitcode=1
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fi
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if is_hostapd_running; then
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echo "[OK] Hostapd is running"
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else
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echo "[ERR] Hostapd is not running"
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exitcode=1
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fi
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for i in $(seq 0 $((${ynh_multissid} - 1))); do
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if has_ip6delegatedprefix ${i}; then
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echo "[INFO] SSID ${i}: IPv6 delegated prefix found"
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echo "[INFO] SSID ${i}: IPv6 address computed from the delegated prefix: ${ynh_ip6_addr}"
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if is_ip6addr_set ${i}; then
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echo "[OK] SSID ${i}: IPv6 address set"
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else
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echo "[ERR] SSID ${i}: No IPv6 address set"
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exitcode=1
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fi
|
|
else
|
|
echo "[INFO] SSID ${i}: No IPv6 delegated prefix found"
|
|
fi
|
|
|
|
if is_dhcpd_running ${i}; then
|
|
echo "[OK] SSID ${i}: DHCP servers set"
|
|
else
|
|
echo "[ERR] SSID ${i}: No DHCP servers set"
|
|
exitcode=1
|
|
fi
|
|
|
|
if is_ip4nataddr_set ${i}; then
|
|
echo "[OK] SSID ${i}: IPv4 NAT address set"
|
|
else
|
|
echo "[ERR] SSID ${i}: No IPv4 NAT address set"
|
|
exitcode=1
|
|
fi
|
|
done
|
|
|
|
exit ${exitcode}
|
|
;;
|
|
*)
|
|
echo "Usage: $0 {start|stop|restart|status}"
|
|
exit 1
|
|
;;
|
|
esac
|
|
|
|
exit 0
|