third_party/mbedtls/repo/programs/test/udp_proxy_wrapper.sh

   1 #!/bin/sh
   2 # -*-sh-basic-offset: 4-*-
   3 # Usage: udp_proxy_wrapper.sh [PROXY_PARAM...] -- [SERVER_PARAM...]
   4
   5 set -u
   6
   7 MBEDTLS_BASE="$(dirname -- "$0")/../.."
   8 TPXY_BIN="$MBEDTLS_BASE/programs/test/udp_proxy"
   9 SRV_BIN="$MBEDTLS_BASE/programs/ssl/ssl_server2"
  10
  11 : ${VERBOSE:=0}
  12
  13 stop_proxy() {
  14     if [ -n "${tpxy_pid:-}" ]; then
  15         echo
  16         echo "  * Killing proxy (pid $tpxy_pid) ..."
  17         kill $tpxy_pid
  18     fi
  19 }
  20
  21 stop_server() {
  22     if [ -n "${srv_pid:-}" ]; then
  23         echo
  24         echo "  * Killing server (pid $srv_pid) ..."
  25         kill $srv_pid >/dev/null 2>/dev/null
  26     fi
  27 }
  28
  29 cleanup() {
  30     stop_server
  31     stop_proxy
  32     exit 129
  33 }
  34
  35 trap cleanup INT TERM HUP
  36
  37 # Extract the proxy parameters
  38 tpxy_cmd_snippet='"$TPXY_BIN"'
  39 while [ $# -ne 0 ] && [ "$1" != "--" ]; do
  40     tail="$1" quoted=""
  41     while [ -n "$tail" ]; do
  42         case "$tail" in
  43             *\'*) quoted="${quoted}${tail%%\'*}'\\''" tail="${tail#*\'}";;
  44             *) quoted="${quoted}${tail}"; tail=; false;;
  45         esac
  46     done
  47     tpxy_cmd_snippet="$tpxy_cmd_snippet '$quoted'"
  48     shift
  49 done
  50 unset tail quoted
  51 if [ $# -eq 0 ]; then
  52     echo "  * No server arguments (must be preceded by \" -- \") - exit"
  53     exit 3
  54 fi
  55 shift
  56
  57 dtls_enabled=
  58 ipv6_in_use=
  59 server_port_orig=
  60 server_addr_orig=
  61 for param; do
  62     case "$param" in
  63         server_port=*) server_port_orig="${param#*=}";;
  64         server_addr=*:*) server_addr_orig="${param#*=}"; ipv6_in_use=1;;
  65         server_addr=*) server_addr_orig="${param#*=}";;
  66         dtls=[!0]*) dtls_enabled=1;;
  67     esac
  68 done
  69
  70 if [ -z "$dtls_enabled" ] || [ -n "$ipv6_in_use" ]; then
  71     echo >&2 "$0: Couldn't find DTLS enabling, or IPv6 is in use - immediate fallback to server application..."
  72     if [ $VERBOSE -gt 0 ]; then
  73         echo "[ $SRV_BIN $* ]"
  74     fi
  75     exec "$SRV_BIN" "$@"
  76 fi
  77
  78 if [ -z "$server_port_orig" ]; then
  79     server_port_orig=4433
  80 fi
  81 echo "  * Server port:       $server_port_orig"
  82 tpxy_cmd_snippet="$tpxy_cmd_snippet \"listen_port=\$server_port_orig\""
  83 tpxy_cmd_snippet="$tpxy_cmd_snippet \"server_port=\$server_port\""
  84
  85 if [ -n "$server_addr_orig" ]; then
  86     echo "  * Server address:    $server_addr_orig"
  87     tpxy_cmd_snippet="$tpxy_cmd_snippet \"server_addr=\$server_addr_orig\""
  88     tpxy_cmd_snippet="$tpxy_cmd_snippet \"listen_addr=\$server_addr_orig\""
  89 fi
  90
  91 server_port=$(( server_port_orig + 1 ))
  92 set -- "$@" "server_port=$server_port"
  93 echo "  * Intermediate port: $server_port"
  94
  95 echo "  * Start proxy in background ..."
  96 if [ $VERBOSE -gt 0 ]; then
  97     echo "[ $tpxy_cmd_snippet ]"
  98 fi
  99 eval exec "$tpxy_cmd_snippet" >/dev/null 2>&1 &
 100 tpxy_pid=$!
 101
 102 if [ $VERBOSE -gt 0 ]; then
 103     echo "  * Proxy ID:          $TPXY_PID"
 104 fi
 105
 106 echo "  * Starting server ..."
 107 if [ $VERBOSE -gt 0 ]; then
 108     echo "[ $SRV_BIN $* ]"
 109 fi
 110
 111 exec "$SRV_BIN" "$@" >&2 &
 112 srv_pid=$!
 113
 114 wait $srv_pid
 115
 116 stop_proxy
 117 return 0