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