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 }
  83
  84 ppp_generic_setup() {
  85         local config="$1"; shift
  86         local localip
  87
  88         json_get_vars ipv6 demand keepalive keepalive_adaptive username password pppd_options pppname unnumbered
  89         if [ "$ipv6" = 0 ]; then
  90                 ipv6=""
  91         elif [ -z "$ipv6" -o "$ipv6" = auto ]; then
  92                 ipv6=1
  93                 proto_export "AUTOIPV6=1"
  94         fi
  95
  96         if [ "${demand:-0}" -gt 0 ]; then
  97                 demand="precompiled-active-filter /etc/ppp/filter demand idle $demand"
  98         else
  99                 demand=""
 100         fi
 101         [ -n "$mtu" ] || json_get_var mtu mtu
 102         [ -n "$pppname" ] || pppname="${proto:-ppp}-$config"
 103         [ -n "$unnumbered" ] && {
 104                 local subnets
 105                 ( proto_add_host_dependency "$config" "" "$unnumbered" )
 106                 network_get_subnets subnets "$unnumbered"
 107                 localip=$(ppp_select_ipaddr "$subnets")
 108                 [ -n "$localip" ] || {
 109                         proto_block_restart "$config"
 110                         return
 111                 }
 112         }
 113
 114         local lcp_failure="${keepalive%%[, ]*}"
 115         local lcp_interval="${keepalive##*[, ]}"
 116         local lcp_adaptive="lcp-echo-adaptive"
 117         [ "${lcp_failure:-0}" -lt 1 ] && lcp_failure=""
 118         [ "$lcp_interval" != "$keepalive" ] || lcp_interval=5
 119         [ "${keepalive_adaptive:-1}" -lt 1 ] && lcp_adaptive=""
 120         [ -n "$connect" ] || json_get_var connect connect
 121         [ -n "$disconnect" ] || json_get_var disconnect disconnect
 122
 123         proto_run_command "$config" /usr/sbin/pppd \
 124                 nodetach ipparam "$config" \
 125                 ifname "$pppname" \
 126                 ${localip:+$localip:} \
 127                 ${lcp_failure:+lcp-echo-interval $lcp_interval lcp-echo-failure $lcp_failure $lcp_adaptive} \
 128                 ${ipv6:++ipv6} \
 129                 nodefaultroute \
 130                 usepeerdns \
 131                 $demand maxfail 1 \
 132                 ${username:+user "$username" password "$password"} \
 133                 ${connect:+connect "$connect"} \
 134                 ${disconnect:+disconnect "$disconnect"} \
 135                 ip-up-script /lib/netifd/ppp-up \
 136                 ipv6-up-script /lib/netifd/ppp-up \
 137                 ip-down-script /lib/netifd/ppp-down \
 138                 ipv6-down-script /lib/netifd/ppp-down \
 139                 ${mtu:+mtu $mtu mru $mtu} \
 140                 "$@" $pppd_options
 141 }
 142
 143 ppp_generic_teardown() {
 144         local interface="$1"
 145         local errorstring=$(ppp_exitcode_tostring $ERROR)
 146
 147         case "$ERROR" in
 148                 0)
 149                 ;;
 150                 2)
 151                         proto_notify_error "$interface" "$errorstring"
 152                         proto_block_restart "$interface"
 153                 ;;
 154                 11|19)
 155                         json_get_var authfail authfail
 156                         proto_notify_error "$interface" "$errorstring"
 157                         if [ "${authfail:-0}" -gt 0 ]; then
 158                                 proto_block_restart "$interface"
 159                         fi
 160                 ;;
 161                 *)
 162                         proto_notify_error "$interface" "$errorstring"
 163                 ;;
 164         esac
 165
 166         proto_kill_command "$interface"
 167 }
 168
 169 # PPP on serial device
 170
 171 proto_ppp_init_config() {
 172         proto_config_add_string "device"
 173         ppp_generic_init_config
 174         no_device=1
 175         available=1
 176         lasterror=1
 177 }
 178
 179 proto_ppp_setup() {
 180         local config="$1"
 181
 182         json_get_var device device
 183         ppp_generic_setup "$config" "$device"
 184 }
 185
 186 proto_ppp_teardown() {
 187         ppp_generic_teardown "$@"
 188 }
 189
 190 proto_pppoe_init_config() {
 191         ppp_generic_init_config
 192         proto_config_add_string "ac"
 193         proto_config_add_string "service"
 194         proto_config_add_string "host_uniq"
 195         lasterror=1
 196 }
 197
 198 proto_pppoe_setup() {
 199         local config="$1"
 200         local iface="$2"
 201
 202         for module in slhc ppp_generic pppox pppoe; do
 203                 /sbin/insmod $module 2>&- >&-
 204         done
 205
 206         json_get_var mtu mtu
 207         mtu="${mtu:-1492}"
 208
 209         json_get_var ac ac
 210         json_get_var service service
 211         json_get_var host_uniq host_uniq
 212
 213         ppp_generic_setup "$config" \
 214                 plugin rp-pppoe.so \
 215                 ${ac:+rp_pppoe_ac "$ac"} \
 216                 ${service:+rp_pppoe_service "$service"} \
 217                 ${host_uniq:+host-uniq "$host_uniq"} \
 218                 "nic-$iface"
 219 }
 220
 221 proto_pppoe_teardown() {
 222         ppp_generic_teardown "$@"
 223 }
 224
 225 proto_pppoa_init_config() {
 226         ppp_generic_init_config
 227         proto_config_add_int "atmdev"
 228         proto_config_add_int "vci"
 229         proto_config_add_int "vpi"
 230         proto_config_add_string "encaps"
 231         no_device=1
 232         available=1
 233         lasterror=1
 234 }
 235
 236 proto_pppoa_setup() {
 237         local config="$1"
 238         local iface="$2"
 239
 240         for module in slhc ppp_generic pppox pppoatm; do
 241                 /sbin/insmod $module 2>&- >&-
 242         done
 243
 244         json_get_vars atmdev vci vpi encaps
 245
 246         case "$encaps" in
 247                 1|vc) encaps="vc-encaps" ;;
 248                 *) encaps="llc-encaps" ;;
 249         esac
 250
 251         ppp_generic_setup "$config" \
 252                 plugin pppoatm.so \
 253                 ${atmdev:+$atmdev.}${vpi:-8}.${vci:-35} \
 254                 ${encaps}
 255 }
 256
 257 proto_pppoa_teardown() {
 258         ppp_generic_teardown "$@"
 259 }
 260
 261 proto_pptp_init_config() {
 262         ppp_generic_init_config
 263         proto_config_add_string "server"
 264         proto_config_add_string "interface"
 265         available=1
 266         no_device=1
 267         lasterror=1
 268 }
 269
 270 proto_pptp_setup() {
 271         local config="$1"
 272         local iface="$2"
 273
 274         local ip serv_addr server interface
 275         json_get_vars interface server
 276         [ -n "$server" ] && {
 277                 for ip in $(resolveip -t 5 "$server"); do
 278                         ( proto_add_host_dependency "$config" "$ip" $interface )
 279                         serv_addr=1
 280                 done
 281         }
 282         [ -n "$serv_addr" ] || {
 283                 echo "Could not resolve server address"
 284                 sleep 5
 285                 proto_setup_failed "$config"
 286                 exit 1
 287         }
 288
 289         local load
 290         for module in slhc ppp_generic ppp_async ppp_mppe ip_gre gre pptp; do
 291                 grep -q "^$module " /proc/modules && continue
 292                 /sbin/insmod $module 2>&- >&-
 293                 load=1
 294         done
 295         [ "$load" = "1" ] && sleep 1
 296
 297         ppp_generic_setup "$config" \
 298                 plugin pptp.so \
 299                 pptp_server $server \
 300                 file /etc/ppp/options.pptp
 301 }
 302
 303 proto_pptp_teardown() {
 304         ppp_generic_teardown "$@"
 305 }
 306
 307 [ -n "$INCLUDE_ONLY" ] || {
 308         add_protocol ppp
 309         [ -f /usr/lib/pppd/*/rp-pppoe.so ] && add_protocol pppoe
 310         [ -f /usr/lib/pppd/*/pppoatm.so ] && add_protocol pppoa
 311         [ -f /usr/lib/pppd/*/pptp.so ] && add_protocol pptp
 312 }
 313