package/ppp/files/ppp.sh

   1 scan_ppp() {
   2         config_get ifname "$1" ifname
   3         pppdev="${pppdev:-0}"
   4         config_set "$1" ifname "ppp$pppdev"
   5         config_set "$1" unit "$pppdev"
   6 }
   7
   8 start_pppd() {
   9         local cfg="$1"; shift
  10
  11         # make sure only one pppd process is started
  12         lock "/var/lock/ppp-${cfg}"
  13         local pid="$(head -n1 /var/run/ppp-${cfg}.pid 2>/dev/null)"
  14         [ -d "/proc/$pid" ] && grep pppd "/proc/$pid/cmdline" 2>/dev/null >/dev/null && {
  15                 lock -u "/var/lock/ppp-${cfg}"
  16                 return 0
  17         }
  18
  19         config_get device "$cfg" device
  20         config_get unit "$cfg" unit
  21         config_get username "$cfg" username
  22         config_get password "$cfg" password
  23         config_get keepalive "$cfg" keepalive
  24
  25         config_get connect "$cfg" connect
  26         config_get disconnect "$cfg" disconnect
  27
  28         interval="${keepalive##*[, ]}"
  29         [ "$interval" != "$keepalive" ] || interval=5
  30
  31         config_get demand "$cfg" demand
  32         [ -n "$demand" ] && echo "nameserver 1.1.1.1" > /tmp/resolv.conf.auto
  33         /usr/sbin/pppd "$@" \
  34                 ${keepalive:+lcp-echo-interval $interval lcp-echo-failure ${keepalive%%[, ]*}} \
  35                 ${demand:+precompiled-active-filter /etc/ppp/filter demand idle }${demand:-persist} \
  36                 usepeerdns \
  37                 defaultroute \
  38                 replacedefaultroute \
  39                 ${username:+user "$username" password "$password"} \
  40                 linkname "$cfg" \
  41                 ipparam "$cfg" \
  42                 ${connect:+connect "$connect"} \
  43                 ${disconnect:+disconnect "$disconnect"}
  44
  45         lock -u "/var/lock/ppp-${cfg}"
  46 }
  47
  48 setup_interface_ppp() {
  49         local iface="$1"
  50         local config="$2"
  51
  52         config_get device "$config" device
  53
  54         config_get mtu "$cfg" mtu
  55         mtu=${mtu:-1492}
  56         start_pppd "$config" \
  57                 mtu $mtu mru $mtu \
  58                 "$device"
  59 }
  60