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         proto_config_add_boolean sourcefilter
  86 }
  87
  88 ppp_generic_setup() {
  89         local config="$1"; shift
  90         local localip
  91
  92         json_get_vars ip6table demand keepalive keepalive_adaptive username password pppd_options pppname unnumbered persist maxfail holdoff peerdns sourcefilter
  93
  94         [ ! -e /proc/sys/net/ipv6 ] && ipv6=0 || json_get_var ipv6 ipv6
  95
  96         if [ "$ipv6" = 0 ]; then
  97                 ipv6=""
  98         elif [ -z "$ipv6" -o "$ipv6" = auto ]; then
  99                 ipv6=1
 100                 autoipv6=1
 101         fi
 102
 103         if [ "${demand:-0}" -gt 0 ]; then
 104                 demand="precompiled-active-filter /etc/ppp/filter demand idle $demand"
 105         else
 106                 demand=""
 107         fi
 108         if [ -n "$persist" ]; then
 109                 [ "${persist}" -lt 1 ] && persist="nopersist" || persist="persist"
 110         fi
 111         if [ -z "$maxfail" ]; then
 112                 [ "$persist" = "persist" ] && maxfail=0 || maxfail=1
 113         fi
 114         [ -n "$mtu" ] || json_get_var mtu mtu
 115         [ -n "$pppname" ] || pppname="${proto:-ppp}-$config"
 116         [ -n "$unnumbered" ] && {
 117                 local subnets
 118                 ( proto_add_host_dependency "$config" "" "$unnumbered" )
 119                 network_get_subnets subnets "$unnumbered"
 120                 localip=$(ppp_select_ipaddr "$subnets")
 121                 [ -n "$localip" ] || {
 122                         proto_block_restart "$config"
 123                         return
 124                 }
 125         }
 126
 127         [ -n "$keepalive" ] || keepalive="5 1"
 128
 129         local lcp_failure="${keepalive%%[, ]*}"
 130         local lcp_interval="${keepalive##*[, ]}"
 131         local lcp_adaptive="lcp-echo-adaptive"
 132         [ "${lcp_failure:-0}" -lt 1 ] && lcp_failure=""
 133         [ "$lcp_interval" != "$keepalive" ] || lcp_interval=5
 134         [ "${keepalive_adaptive:-1}" -lt 1 ] && lcp_adaptive=""
 135         [ -n "$connect" ] || json_get_var connect connect
 136         [ -n "$disconnect" ] || json_get_var disconnect disconnect
 137         [ "$sourcefilter" = "0" ] || sourcefilter=""
 138
 139         proto_run_command "$config" /usr/sbin/pppd \
 140                 nodetach ipparam "$config" \
 141                 ifname "$pppname" \
 142                 ${localip:+$localip:} \
 143                 ${lcp_failure:+lcp-echo-interval $lcp_interval lcp-echo-failure $lcp_failure $lcp_adaptive} \
 144                 ${ipv6:++ipv6} \
 145                 ${autoipv6:+set AUTOIPV6=1} \
 146                 ${ip6table:+set IP6TABLE=$ip6table} \
 147                 ${peerdns:+set PEERDNS=$peerdns} \
 148                 ${sourcefilter:+set NOSOURCEFILTER=1} \
 149                 nodefaultroute \
 150                 usepeerdns \
 151                 $demand $persist maxfail $maxfail \
 152                 ${holdoff:+holdoff "$holdoff"} \
 153                 ${username:+user "$username" password "$password"} \
 154                 ${connect:+connect "$connect"} \
 155                 ${disconnect:+disconnect "$disconnect"} \
 156                 ip-up-script /lib/netifd/ppp-up \
 157                 ${ipv6:+ipv6-up-script /lib/netifd/ppp6-up} \
 158                 ip-down-script /lib/netifd/ppp-down \
 159                 ${ipv6:+ipv6-down-script /lib/netifd/ppp-down} \
 160                 ${mtu:+mtu $mtu mru $mtu} \
 161                 "$@" $pppd_options
 162 }
 163
 164 ppp_generic_teardown() {
 165         local interface="$1"
 166         local errorstring=$(ppp_exitcode_tostring $ERROR)
 167
 168         case "$ERROR" in
 169                 0)
 170                 ;;
 171                 2)
 172                         proto_notify_error "$interface" "$errorstring"
 173                         proto_block_restart "$interface"
 174                 ;;
 175                 11|19)
 176                         json_get_var authfail authfail
 177                         proto_notify_error "$interface" "$errorstring"
 178                         if [ "${authfail:-0}" -gt 0 ]; then
 179                                 proto_block_restart "$interface"
 180                         fi
 181                 ;;
 182                 *)
 183                         proto_notify_error "$interface" "$errorstring"
 184                 ;;
 185         esac
 186
 187         proto_kill_command "$interface"
 188 }
 189
 190 # PPP on serial device
 191
 192 proto_ppp_init_config() {
 193         proto_config_add_string "device"
 194         ppp_generic_init_config
 195         no_device=1
 196         available=1
 197         lasterror=1
 198 }
 199
 200 proto_ppp_setup() {
 201         local config="$1"
 202
 203         json_get_var device device
 204         ppp_generic_setup "$config" "$device"
 205 }
 206
 207 proto_ppp_teardown() {
 208         ppp_generic_teardown "$@"
 209 }
 210
 211 proto_pppoe_init_config() {
 212         ppp_generic_init_config
 213         proto_config_add_string "ac"
 214         proto_config_add_string "service"
 215         proto_config_add_string "host_uniq"
 216         proto_config_add_int "padi_attempts"
 217         proto_config_add_int "padi_timeout"
 218
 219         lasterror=1
 220 }
 221
 222 proto_pppoe_setup() {
 223         local config="$1"
 224         local iface="$2"
 225
 226         /sbin/modprobe -qa slhc ppp_generic pppox pppoe
 227
 228         json_get_var mtu mtu
 229         mtu="${mtu:-1492}"
 230
 231         json_get_var ac ac
 232         json_get_var service service
 233         json_get_var host_uniq host_uniq
 234         json_get_var padi_attempts padi_attempts
 235         json_get_var padi_timeout padi_timeout
 236
 237         ppp_generic_setup "$config" \
 238                 plugin pppoe.so \
 239                 ${ac:+rp_pppoe_ac "$ac"} \
 240                 ${service:+rp_pppoe_service "$service"} \
 241                 ${host_uniq:+host-uniq "$host_uniq"} \
 242                 ${padi_attempts:+pppoe-padi-attempts $padi_attempts} \
 243                 ${padi_timeout:+pppoe-padi-timeout $padi_timeout} \
 244                 "nic-$iface"
 245 }
 246
 247 proto_pppoe_teardown() {
 248         ppp_generic_teardown "$@"
 249 }
 250
 251 proto_pppoa_init_config() {
 252         ppp_generic_init_config
 253         proto_config_add_int "atmdev"
 254         proto_config_add_int "vci"
 255         proto_config_add_int "vpi"
 256         proto_config_add_string "encaps"
 257         no_device=1
 258         available=1
 259         lasterror=1
 260 }
 261
 262 proto_pppoa_setup() {
 263         local config="$1"
 264         local iface="$2"
 265
 266         /sbin/modprobe -qa slhc ppp_generic pppox pppoatm
 267
 268         json_get_vars atmdev vci vpi encaps
 269
 270         case "$encaps" in
 271                 1|vc) encaps="vc-encaps" ;;
 272                 *) encaps="llc-encaps" ;;
 273         esac
 274
 275         ppp_generic_setup "$config" \
 276                 plugin pppoatm.so \
 277                 ${atmdev:+$atmdev.}${vpi:-8}.${vci:-35} \
 278                 ${encaps}
 279 }
 280
 281 proto_pppoa_teardown() {
 282         ppp_generic_teardown "$@"
 283 }
 284
 285 proto_pptp_init_config() {
 286         ppp_generic_init_config
 287         proto_config_add_string "server"
 288         proto_config_add_string "interface"
 289         available=1
 290         no_device=1
 291         lasterror=1
 292 }
 293
 294 proto_pptp_setup() {
 295         local config="$1"
 296         local iface="$2"
 297
 298         local ip serv_addr server interface
 299         json_get_vars interface server
 300         [ -n "$server" ] && {
 301                 for ip in $(resolveip -t 5 "$server"); do
 302                         ( proto_add_host_dependency "$config" "$ip" $interface )
 303                         serv_addr=1
 304                 done
 305         }
 306         [ -n "$serv_addr" ] || {
 307                 echo "Could not resolve server address"
 308                 sleep 5
 309                 proto_setup_failed "$config"
 310                 exit 1
 311         }
 312
 313         /sbin/modprobe -qa slhc ppp_generic ppp_async ppp_mppe ip_gre gre pptp
 314         sleep 1
 315
 316         ppp_generic_setup "$config" \
 317                 plugin pptp.so \
 318                 pptp_server $server \
 319                 file /etc/ppp/options.pptp
 320 }
 321
 322 proto_pptp_teardown() {
 323         ppp_generic_teardown "$@"
 324 }
 325
 326 [ -n "$INCLUDE_ONLY" ] || {
 327         add_protocol ppp
 328         [ -f /usr/lib/pppd/*/pppoe.so ] && add_protocol pppoe
 329         [ -f /usr/lib/pppd/*/pppoatm.so ] && add_protocol pppoa
 330         [ -f /usr/lib/pppd/*/pptp.so ] && add_protocol pptp
 331 }