init (wip)

conf/dhcpd.conf

@@ -0,0 +1,15 @@
+option domain-name-servers <TPL:IP4_DNS0>, <TPL:IP4_DNS1>;
+default-lease-time 14440;
+ddns-update-style none;
+deny bootp;
+
+shared-network <TPL:WIFI_DEVICE> {
+  subnet <TPL:IP4_NAT_PREFIX>.0
+  netmask 255.255.255.0 {
+    option routers <TPL:IP4_NAT_PREFIX>.1;
+    option subnet-mask 255.255.255.0;
+    pool {
+      range <TPL:IP4_NAT_PREFIX>.2 <TPL:IP4_NAT_PREFIX>.254;
+    }
+  }
+}

conf/hostapd.conf

@@ -0,0 +1,12 @@
+interface=<TPL:WIFI_DEVICE>
+ssid=<TPL:WIFI_SSID>
+hw_mode=g
+channel=6
+macaddr_acl=0
+auth_algs=1
+ignore_broadcast_ssid=0
+wpa=2
+wpa_passphrase=<TPL:WIFI_PASSPHRASE>
+wpa_key_mgmt=WPA-PSK
+wpa_pairwise=TKIP
+rsn_pairwise=CCMP

conf/radvd.conf

@@ -0,0 +1,6 @@
+interface <TPL:WIFI_DEVICE>
+{
+  AdvSendAdvert on;
+  prefix <TPL:IP6_NET>/64 { };
+  RDNSS <TPL:IP6_DNS0> <TPL:IP6_DNS1> { };
+};

conf/ynh-hotspot

@@ -0,0 +1,215 @@
+#!/bin/bash
+### BEGIN INIT INFO
+# Provides: ynh-hotspot
+# Required-Start:    $network $remote_fs $syslog
+# Required-Stop:     $network $remote_fs $syslog
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: Set prerequisites for wifi hotspot.
+# Description:       Set prerequisites for wifi hotspot.
+### END INIT INFO
+
+is_ndproxy_set() {
+  proxy=$(ip -6 neigh show proxy)
+  [ ! -z "${proxy}" ]
+}
+
+is_nat_set() {
+  iptables -nt nat -L POSTROUTING | grep -q MASQUERADE
+}
+
+is_ip4nataddr_set() {
+  ip a s dev <TPL:WIFI_DEVICE> | grep -q <TPL:IP4_NAT_PREFIX>.1/24
+}
+
+is_ip6addr_set() {
+  ip a s dev <TPL:WIFI_DEVICE> | grep -q <TPL:IP6_ADDR>/64
+}
+
+is_forwarding_set() {
+  ip6=$(sysctl net.ipv6.conf.all.forwarding | awk '{ print $NF; }')
+  ip4=$(sysctl net.ipv4.conf.all.forwarding | awk '{ print $NF; }')
+  [ ${ip6} -eq 1 -a ${ip4} -eq 1 ]
+}
+
+is_hostapd_running() {
+  service hostapd status &> /dev/null
+}
+
+is_radvd_running() {
+  service radvd status &> /dev/null
+}
+
+is_dhcpd_running() {
+  service isc-dhcp-server status &> /dev/null
+}
+
+is_running() {
+  is_ndproxy_set && is_nat_set && is_forwarding_set\
+  && is_hostapd_running && is_radvd_running && is_dhcpd_running
+}
+
+case "$1" in
+  start)
+    if is_running; then
+      echo "Already correctly set"
+    else
+      if ! is_ndproxy_set; then
+        echo "Set NDP proxy"
+        ip -6 neigh add proxy <TPL:IP6_ADDR> dev <TPL:WIFI_DEVICE>
+      fi
+
+      if ! is_nat_set; then
+        echo "Set NAT"
+        iptables -t nat -A POSTROUTING -o <TPL:WIRED_DEVICE> -j MASQUERADE
+      fi
+
+      if ! is_ip4nataddr_set; then
+        echo "Set IPv4 NAT address"
+        ip a a <TPL:IP4_NAT_PREFIX>.1/24 dev <TPL:WIFI_DEVICE>
+      fi
+
+      if ! is_ip6addr_set; then
+        echo "Set IPv6 address"
+        ip a a <TPL:IP6_ADDR>/64 dev <TPL:WIFI_DEVICE>
+      fi
+
+      if ! is_forwarding_set; then
+        echo "Set forwarding"
+        sysctl -w net.ipv6.conf.all.forwarding=1 &> /dev/null
+        sysctl -w net.ipv4.conf.all.forwarding=1 &> /dev/null
+      fi
+
+      if ! is_hostapd_running; then
+        echo "Run hostapd"
+        service hostapd start
+      fi
+
+      # must be running after hostapd
+      if ! is_radvd_running; then
+        echo "Run radvd"
+        sleep 1
+        service radvd start
+      fi
+
+      # "options routers" addr (is_ip6addr_set) must be set before
+      if ! is_dhcpd_running; then
+        echo "Run dhcpd"
+        service isc-dhcp-server start
+      fi
+    fi
+  ;;
+  stop)
+    if is_ndproxy_set; then
+      echo "Unset NDP proxy"
+      ip -6 neigh del proxy <TPL:IP6_ADDR> dev <TPL:WIFI_DEVICE>
+    fi
+  
+    if is_nat_set; then
+      echo "Unset NAT"
+      iptables -t nat -D POSTROUTING -o <TPL:WIRED_DEVICE> -j MASQUERADE
+    fi
+
+    if is_ip4nataddr_set; then
+      echo "Unset IPv4 NAT address"
+      ip a d <TPL:IP4_NAT_PREFIX>.1/24 dev <TPL:WIFI_DEVICE>
+    fi
+
+    if is_ip6addr_set; then
+      echo "Unset IPv6 address"
+      ip a d <TPL:IP6_ADDR>/64 dev <TPL:WIFI_DEVICE>
+    fi 
+
+    if is_forwarding_set; then
+      echo "Unset forwarding"
+      sysctl -w net.ipv6.conf.all.forwarding=0 &> /dev/null
+      sysctl -w net.ipv4.conf.all.forwarding=0 &> /dev/null
+    fi
+  
+    if is_hostapd_running; then
+      echo "Stop hostapd"
+      service hostapd stop
+    fi
+  
+    if is_radvd_running; then
+      echo "Stop radvd"
+      service radvd stop
+    fi
+  
+    if is_dhcpd_running; then
+      echo "Stop dhcpd"
+      service isc-dhcp-server stop
+    fi
+  ;;
+  restart)
+    $0 stop
+    $0 start
+  ;;
+  status)
+    exitcode=0
+
+    if is_ndproxy_set; then
+      echo "NDP proxy is correctly set"
+    else
+      echo "NDP proxy is NOT set"
+      exitcode=1
+    fi
+
+    if is_nat_set; then
+      echo "NAT is correctly set"
+    else
+      echo "NAT is NOT set"
+      exitcode=1
+    fi
+
+    if is_ip4nataddr_set; then
+      echo "IPv4 NAT address is correctly set"
+    else
+      echo "IPv4 NAT address is NOT set"
+      exitcode=1
+    fi
+
+    if is_ip6addr_set; then
+      echo "IPv6 address is correctly set"
+    else
+      echo "IPv6 address is NOT set"
+      exitcode=1
+    fi
+
+    if is_forwarding_set; then
+      echo "Forwarding is correctly set"
+    else
+      echo "Forwarding is NOT set"
+      exitcode=1
+    fi
+
+    if is_hostapd_running; then
+      echo "Hostapd is running"
+    else
+      echo "Hostapd is NOT running"
+      exitcode=1
+    fi
+
+    if is_radvd_running; then
+      echo "Radvd is running"
+    else
+      echo "Radvd is NOT running"
+      exitcode=1
+    fi
+
+    if is_dhcpd_running; then
+      echo "Dhcpd is running"
+    else
+      echo "Dhcpd is NOT running"
+      exitcode=1
+    fi
+
+    exit ${exitcode}
+  ;;
+  *)
+    echo "Usage: $0 {start|stop|restart|status}"
+    exit 1
+  ;;
+esac
+
+exit 0