net/vpnc/files/vpnc.sh

   1 #!/bin/sh
   2 . /lib/functions.sh
   3 . ../netifd-proto.sh
   4 init_proto "$@"
   5
   6 proto_vpnc_init_config() {
   7         proto_config_add_string "server"
   8         proto_config_add_string "username"
   9         proto_config_add_string "hexpasswd"
  10         proto_config_add_string "authgroup"
  11         proto_config_add_string "password"
  12         proto_config_add_string "token_mode"
  13         proto_config_add_string "token_secret"
  14         proto_config_add_string "interface"
  15         proto_config_add_string "passgroup"
  16         proto_config_add_string "hexpassgroup"
  17         proto_config_add_string "domain"
  18         proto_config_add_string "vendor"
  19         proto_config_add_string "natt_mode"
  20         proto_config_add_string "dh_group"
  21         proto_config_add_string "pfs"
  22         proto_config_add_boolean "enable_single_des"
  23         proto_config_add_boolean "enable_no_enc"
  24         proto_config_add_int "mtu"
  25         proto_config_add_string "local_addr"
  26         proto_config_add_int "local_port"
  27         proto_config_add_int "udp_port"
  28         proto_config_add_int "dpd_idle"
  29         proto_config_add_string "auth_mode"
  30         proto_config_add_string "target_network"
  31         proto_config_add_boolean "authfail"
  32         no_device=1
  33         available=1
  34 }
  35
  36 proto_vpnc_setup() {
  37         local config="$1"
  38
  39         json_get_vars server username hexpasswd authgroup password token_mode token_secret interface passgroup hexpassgroup domain vendor natt_mode dh_group pfs enable_single_des enable_no_enc mtu local_addr local_port udp_port dpd_idle auth_mode target_network authfail
  40
  41         grep -q tun /proc/modules || insmod tun
  42
  43         logger -t vpnc "initializing..."
  44         serv_addr=
  45         for ip in $(resolveip -t 10 "$server"); do
  46                 ( proto_add_host_dependency "$config" "$ip" $interface )
  47                 serv_addr=1
  48         done
  49         [ -n "$serv_addr" ] || {
  50                 logger -t vpnc "Could not resolve server address: '$server'"
  51                 sleep 60
  52                 proto_setup_failed "$config"
  53                 exit 1
  54         }
  55
  56         mkdir -p /var/etc
  57         umask 077
  58         pwfile="/var/etc/vpnc-$config.conf"
  59         echo "IPSec gateway $server" > "$pwfile"
  60         cmdline="--no-detach --pid-file /var/run/vpnc-$config.pid --ifname vpn-$config --non-inter --script /lib/netifd/vpnc-script $pwfile"
  61
  62         [ -f /etc/vpnc/ca-vpn-$config.pem ] && echo "CA-File /etc/vpnc/ca-vpn-$config.pem" >> "$pwfile"
  63         [ -n "$hexpasswd" ] && echo "Xauth obfuscated password $hexpasswd" >> "$pwfile"
  64         [ -n "$authgroup" ] && echo "IPSec ID $authgroup" >> "$pwfile"
  65         [ -n "$username" ] && echo "Xauth username $username" >> "$pwfile"
  66         [ -n "$password" ] && echo "Xauth password $password" >> "$pwfile"
  67         [ -n "$passgroup" ] && echo "IPSec secret $passgroup" >> "$pwfile"
  68         [ -n "$hexpassgroup" ] && echo "IPSec obfuscated secret $hexpassgroup" >> "$pwfile"
  69         [ -n "$domain" ] && echo "Domain $domain" >> "$pwfile"
  70         [ -n "$vendor" ] && echo "Vendor $vendor" >> "$pwfile"
  71         [ -n "$natt_mode" ] && echo "NAT Traversal Mode $natt_mode" >> "$pwfile"
  72         [ -n "$dh_group" ] && echo "IKE DH Group $dh_group" >> "$pwfile"
  73         [ -n "$pfs" ] && echo "Perfect Forward Secrecy $pfs" >> "$pwfile"
  74         [ "${enable_single_des:-0}" -gt 0 ] && echo "Enable Single DES" >> "$pwfile"
  75         [ "${enable_no_enc:-0}" -gt 0 ] && echo "Enable no encryption" >> "$pwfile"
  76         [ -n "$mtu" ] && echo "Interface MTU $mtu" >> "$pwfile"
  77         [ -n "$local_addr" ] && echo "Local Addr $local_addr" >> "$pwfile"
  78         [ -n "$local_port" ] && echo "Local Port $local_port" >> "$pwfile"
  79         [ -n "$udp_port" ] && echo "Cisco UDP Encapsulation Port $udp_port" >> "$pwfile"
  80         [ -n "$dpd_idle" ] && echo "DPD idle timeout (our side) $dpd_idle" >> "$pwfile"
  81         [ -n "$auth_mode" ] && echo "IKE Authmode $auth_mode" >> "$pwfile"
  82         [ -n "$target_network" ] && echo "IPSEC target network $target_network" >> "$pwfile"
  83
  84         proto_export INTERFACE="$config"
  85         logger -t vpnc "executing 'vpnc $cmdline'"
  86         proto_run_command "$config" /usr/sbin/vpnc $cmdline
  87 }
  88
  89 proto_vpnc_teardown() {
  90         local config="$1"
  91
  92         pwfile="/var/etc/vpnc-$config.conf"
  93
  94         json_get_var authfail authfail
  95         # On error exit (vpnc only has success = 0 and error = 1, so
  96         # we can't be fine-grained and say only auth error)
  97         # and authfail setting true, then don't retry starting vpnc
  98         # This is used for the case were the server blocks repeated
  99         # failed authentication attempts (which will occur if the password
 100         # is wrong, for example).
 101         if [ ${ERROR:-0} -gt 0 ] && [ "${authfail:-0}" -gt 0 ]; then
 102                 proto_block_restart "$config"
 103         fi
 104
 105         rm -f $pwfile
 106         logger -t vpnc "bringing down vpnc"
 107         proto_kill_command "$config" 2
 108 }
 109
 110 add_protocol vpnc