package/network/services/ppp/files/ppp.sh

   1 #!/bin/sh
   2
   3 [ -x /usr/sbin/pppd ] || exit 0
   4
   5 [ -n "$INCLUDE_ONLY" ] || {
   6         . /lib/functions.sh
   7         . /lib/functions/network.sh
   8         . ../netifd-proto.sh
   9         init_proto "$@"
  10 }
  11
  12 ppp_select_ipaddr()
  13 {
  14         local subnets=$1
  15         local res
  16         local res_mask
  17
  18         for subnet in $subnets; do
  19                 local addr="${subnet%%/*}"
  20                 local mask="${subnet#*/}"
  21
  22                 if [ -n "$res_mask" -a "$mask" != 32 ]; then
  23                         [ "$mask" -gt "$res_mask" ] || [ "$res_mask" = 32 ] && {
  24                                 res="$addr"
  25                                 res_mask="$mask"
  26                         }
  27                 elif [ -z "$res_mask" ]; then
  28                         res="$addr"
  29                         res_mask="$mask"
  30                 fi
  31         done
  32
  33         echo "$res"
  34 }
  35
  36 ppp_exitcode_tostring()
  37 {
  38         local errorcode=$1
  39         [ -n "$errorcode" ] || errorcode=5
  40
  41         case "$errorcode" in
  42                 0) echo "OK" ;;
  43                 1) echo "FATAL_ERROR" ;;
  44                 2) echo "OPTION_ERROR" ;;
  45                 3) echo "NOT_ROOT" ;;
  46                 4) echo "NO_KERNEL_SUPPORT" ;;
  47                 5) echo "USER_REQUEST" ;;
  48                 6) echo "LOCK_FAILED" ;;
  49                 7) echo "OPEN_FAILED" ;;
  50                 8) echo "CONNECT_FAILED" ;;
  51                 9) echo "PTYCMD_FAILED" ;;
  52                 10) echo "NEGOTIATION_FAILED" ;;
  53                 11) echo "PEER_AUTH_FAILED" ;;
  54                 12) echo "IDLE_TIMEOUT" ;;
  55                 13) echo "CONNECT_TIME" ;;
  56                 14) echo "CALLBACK" ;;
  57                 15) echo "PEER_DEAD" ;;
  58                 16) echo "HANGUP" ;;
  59                 17) echo "LOOPBACK" ;;
  60                 18) echo "INIT_FAILED" ;;
  61                 19) echo "AUTH_TOPEER_FAILED" ;;
  62                 20) echo "TRAFFIC_LIMIT" ;;
  63                 21) echo "CNID_AUTH_FAILED";;
  64                 *) echo "UNKNOWN_ERROR" ;;
  65         esac
  66 }
  67
  68 ppp_generic_init_config() {
  69         proto_config_add_string username
  70         proto_config_add_string password
  71         proto_config_add_string keepalive
  72         proto_config_add_boolean keepalive_adaptive
  73         proto_config_add_int demand
  74         proto_config_add_string pppd_options
  75         proto_config_add_string 'connect:file'
  76         proto_config_add_string 'disconnect:file'
  77         [ -e /proc/sys/net/ipv6 ] && proto_config_add_string ipv6
  78         proto_config_add_boolean authfail
  79         proto_config_add_int mtu
  80         proto_config_add_string pppname
  81         proto_config_add_string unnumbered
  82         proto_config_add_boolean persist
  83         proto_config_add_int maxfail
  84         proto_config_add_int holdoff
  85 }
  86
  87 ppp_generic_setup() {
  88         local config="$1"; shift
  89         local localip
  90
  91         json_get_vars ip6table demand keepalive keepalive_adaptive username password pppd_options pppname unnumbered persist maxfail holdoff peerdns
  92
  93         [ ! -e /proc/sys/net/ipv6 ] && ipv6=0 || json_get_var ipv6 ipv6
  94
  95         if [ "$ipv6" = 0 ]; then
  96                 ipv6=""
  97         elif [ -z "$ipv6" -o "$ipv6" = auto ]; then
  98                 ipv6=1
  99                 autoipv6=1
 100         fi
 101
 102         if [ "${demand:-0}" -gt 0 ]; then
 103                 demand="precompiled-active-filter /etc/ppp/filter demand idle $demand"
 104         else
 105                 demand=""
 106         fi
 107         if [ -n "$persist" ]; then
 108                 [ "${persist}" -lt 1 ] && persist="nopersist" || persist="persist"
 109         fi
 110         if [ -z "$maxfail" ]; then
 111                 [ "$persist" = "persist" ] && maxfail=0 || maxfail=1
 112         fi
 113         [ -n "$mtu" ] || json_get_var mtu mtu
 114         [ -n "$pppname" ] || pppname="${proto:-ppp}-$config"
 115         [ -n "$unnumbered" ] && {
 116                 local subnets
 117                 ( proto_add_host_dependency "$config" "" "$unnumbered" )
 118                 network_get_subnets subnets "$unnumbered"
 119                 localip=$(ppp_select_ipaddr "$subnets")
 120                 [ -n "$localip" ] || {
 121                         proto_block_restart "$config"
 122                         return
 123                 }
 124         }
 125
 126         [ -n "$keepalive" ] || keepalive="5 1"
 127
 128         local lcp_failure="${keepalive%%[, ]*}"
 129         local lcp_interval="${keepalive##*[, ]}"
 130         local lcp_adaptive="lcp-echo-adaptive"
 131         [ "${lcp_failure:-0}" -lt 1 ] && lcp_failure=""
 132         [ "$lcp_interval" != "$keepalive" ] || lcp_interval=5
 133         [ "${keepalive_adaptive:-1}" -lt 1 ] && lcp_adaptive=""
 134         [ -n "$connect" ] || json_get_var connect connect
 135         [ -n "$disconnect" ] || json_get_var disconnect disconnect
 136
 137         proto_run_command "$config" /usr/sbin/pppd \
 138                 nodetach ipparam "$config" \
 139                 ifname "$pppname" \
 140                 ${localip:+$localip:} \
 141                 ${lcp_failure:+lcp-echo-interval $lcp_interval lcp-echo-failure $lcp_failure $lcp_adaptive} \
 142                 ${ipv6:++ipv6} \
 143                 ${autoipv6:+set AUTOIPV6=1} \
 144                 ${ip6table:+set IP6TABLE=$ip6table} \
 145                 ${peerdns:+set PEERDNS=$peerdns} \
 146                 nodefaultroute \
 147                 usepeerdns \
 148                 $demand $persist maxfail $maxfail \
 149                 ${holdoff:+holdoff "$holdoff"} \
 150                 ${username:+user "$username" password "$password"} \
 151                 ${connect:+connect "$connect"} \
 152                 ${disconnect:+disconnect "$disconnect"} \
 153                 ip-up-script /lib/netifd/ppp-up \
 154                 ${ipv6:+ipv6-up-script /lib/netifd/ppp6-up} \
 155                 ip-down-script /lib/netifd/ppp-down \
 156                 ${ipv6:+ipv6-down-script /lib/netifd/ppp-down} \
 157                 ${mtu:+mtu $mtu mru $mtu} \
 158                 "$@" $pppd_options
 159 }
 160
 161 ppp_generic_teardown() {
 162         local interface="$1"
 163         local errorstring=$(ppp_exitcode_tostring $ERROR)
 164
 165         case "$ERROR" in
 166                 0)
 167                 ;;
 168                 2)
 169                         proto_notify_error "$interface" "$errorstring"
 170                         proto_block_restart "$interface"
 171                 ;;
 172                 11|19)
 173                         json_get_var authfail authfail
 174                         proto_notify_error "$interface" "$errorstring"
 175                         if [ "${authfail:-0}" -gt 0 ]; then
 176                                 proto_block_restart "$interface"
 177                         fi
 178                 ;;
 179                 *)
 180                         proto_notify_error "$interface" "$errorstring"
 181                 ;;
 182         esac
 183
 184         proto_kill_command "$interface"
 185 }
 186
 187 # PPP on serial device
 188
 189 proto_ppp_init_config() {
 190         proto_config_add_string "device"
 191         ppp_generic_init_config
 192         no_device=1
 193         available=1
 194         lasterror=1
 195 }
 196
 197 proto_ppp_setup() {
 198         local config="$1"
 199
 200         json_get_var device device
 201         ppp_generic_setup "$config" "$device"
 202 }
 203
 204 proto_ppp_teardown() {
 205         ppp_generic_teardown "$@"
 206 }
 207
 208 proto_pppoe_init_config() {
 209         ppp_generic_init_config
 210         proto_config_add_string "ac"
 211         proto_config_add_string "service"
 212         proto_config_add_string "host_uniq"
 213         lasterror=1
 214 }
 215
 216 proto_pppoe_setup() {
 217         local config="$1"
 218         local iface="$2"
 219
 220         for module in slhc ppp_generic pppox pppoe; do
 221                 /sbin/insmod $module 2>&- >&-
 222         done
 223
 224         json_get_var mtu mtu
 225         mtu="${mtu:-1492}"
 226
 227         json_get_var ac ac
 228         json_get_var service service
 229         json_get_var host_uniq host_uniq
 230
 231         ppp_generic_setup "$config" \
 232                 plugin rp-pppoe.so \
 233                 ${ac:+rp_pppoe_ac "$ac"} \
 234                 ${service:+rp_pppoe_service "$service"} \
 235                 ${host_uniq:+host-uniq "$host_uniq"} \
 236                 "nic-$iface"
 237 }
 238
 239 proto_pppoe_teardown() {
 240         ppp_generic_teardown "$@"
 241 }
 242
 243 proto_pppoa_init_config() {
 244         ppp_generic_init_config
 245         proto_config_add_int "atmdev"
 246         proto_config_add_int "vci"
 247         proto_config_add_int "vpi"
 248         proto_config_add_string "encaps"
 249         no_device=1
 250         available=1
 251         lasterror=1
 252 }
 253
 254 proto_pppoa_setup() {
 255         local config="$1"
 256         local iface="$2"
 257
 258         for module in slhc ppp_generic pppox pppoatm; do
 259                 /sbin/insmod $module 2>&- >&-
 260         done
 261
 262         json_get_vars atmdev vci vpi encaps
 263
 264         case "$encaps" in
 265                 1|vc) encaps="vc-encaps" ;;
 266                 *) encaps="llc-encaps" ;;
 267         esac
 268
 269         ppp_generic_setup "$config" \
 270                 plugin pppoatm.so \
 271                 ${atmdev:+$atmdev.}${vpi:-8}.${vci:-35} \
 272                 ${encaps}
 273 }
 274
 275 proto_pppoa_teardown() {
 276         ppp_generic_teardown "$@"
 277 }
 278
 279 proto_pptp_init_config() {
 280         ppp_generic_init_config
 281         proto_config_add_string "server"
 282         proto_config_add_string "interface"
 283         available=1
 284         no_device=1
 285         lasterror=1
 286 }
 287
 288 proto_pptp_setup() {
 289         local config="$1"
 290         local iface="$2"
 291
 292         local ip serv_addr server interface
 293         json_get_vars interface server
 294         [ -n "$server" ] && {
 295                 for ip in $(resolveip -t 5 "$server"); do
 296                         ( proto_add_host_dependency "$config" "$ip" $interface )
 297                         serv_addr=1
 298                 done
 299         }
 300         [ -n "$serv_addr" ] || {
 301                 echo "Could not resolve server address"
 302                 sleep 5
 303                 proto_setup_failed "$config"
 304                 exit 1
 305         }
 306
 307         local load
 308         for module in slhc ppp_generic ppp_async ppp_mppe ip_gre gre pptp; do
 309                 grep -q "^$module " /proc/modules && continue
 310                 /sbin/insmod $module 2>&- >&-
 311                 load=1
 312         done
 313         [ "$load" = "1" ] && sleep 1
 314
 315         ppp_generic_setup "$config" \
 316                 plugin pptp.so \
 317                 pptp_server $server \
 318                 file /etc/ppp/options.pptp
 319 }
 320
 321 proto_pptp_teardown() {
 322         ppp_generic_teardown "$@"
 323 }
 324
 325 [ -n "$INCLUDE_ONLY" ] || {
 326         add_protocol ppp
 327         [ -f /usr/lib/pppd/*/rp-pppoe.so ] && add_protocol pppoe
 328         [ -f /usr/lib/pppd/*/pppoatm.so ] && add_protocol pppoa
 329         [ -f /usr/lib/pppd/*/pptp.so ] && add_protocol pptp
 330 }
 331