mbedtls/programs/test/udp_proxy_wrapper.sh
Hanno Becker f65ca329b6 Introduce UDP proxy wrapper script
This commit introduces the script `programs/test/udp_proxy_wrapper.sh` which can
be used to wrap the SSL server binary `programs/ssl/ssl_server2` by the UDP
proxy application `programs/test/udp_proxy` while maintaining the same
interface from the command line.

Specifically, given UDP proxy arguments ARGS_UDP and SSL server arguments
ARGS_SSL, the command line

> ./udp_proxy_wrapper.sh ARGS_UDP -- ARGS_SSL

behaves like

> ./ssl_server2 ARGS_SSL

wrapped by

> ./udp_proxy ARGS_UDP

The motivation and benefit of this is that scripts like `ssl-opt.sh` can be used
with the server command line `P_SRV` modified to `./udp_proxy_wrapper.sh
ARGS_UDP -- DEFAULT_ARGS_SSL` which will result in all tests being executed for
an SSL server behind a UDP proxy.
2017-10-10 16:01:15 +01:00

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#!/bin/sh
set -u
MBEDTLS_BASE="$(pwd)/$(dirname $0)/../../"
TPXY_BIN="$MBEDTLS_BASE/test/udp_proxy"
SRV_BIN="$MBEDTLS_BASE/programs/ssl/ssl_server2"
: ${VERBOSE:=0}
VERBOSE=1
PARAM_SEP="^(.*)--(.*)$"
PROXY_PARAMS=$(echo $@ | sed -n -r "s/$PARAM_SEP/\1/p")
SERVER_PARAMS=$(echo $@ | sed -n -r "s/$PARAM_SEP/\2/p")
stop_proxy() {
test -n "${TPXY_PID:-}" &&
(
echo "\n * Killing proxy (pid $TPXY_PID) ..."
kill $TPXY_PID
)
}
stop_server() {
test -n "${SRV_PID:-}" &&
(
echo "\n * Killing server (pid $SRV_PID) ..."
kill $SRV_PID >/dev/null 2>/dev/null
)
}
cleanup() {
stop_server
stop_proxy
return 1
}
trap cleanup INT TERM HUP
DTLS_ENABLED=$(echo "$SERVER_PARAMS" | grep -v "::1" | grep "dtls=1")
if [ -z "$DTLS_ENABLED" ]; then
echo " * Couldn't find DTLS enabling, or IPv6 is in use - immediate fallback to server application..."
if [ $VERBOSE -gt 0 ]; then
echo "[ $SRV_BIN $SERVER_PARAMS ]"
fi
$SRV_BIN $SERVER_PARAMS >&1 2>&1 &
SRV_PID=$!
wait $SRV_PID
exit 0
fi
SERVER_PORT_ORIG=$(echo "$SERVER_PARAMS" | sed -n -r "s/^.*server_port=([0-9]+).*$/\1/p")
if [ -z "$SERVER_PORT_ORIG" ]; then
echo " * No server port specified - exit"
exit 1
fi
SERVER_ADDR_ORIG=$(echo "$SERVER_PARAMS" | sed -n -r "s/^.*server_addr=([a-zA-Z0-9\.]+).*$/\1/p")
if [ -z "$SERVER_ADDR_ORIG" ]; then
echo " * No server address specified - exit"
exit 1
fi
echo " * Server address: $SERVER_ADDR_ORIG"
echo " * Server port: $SERVER_PORT_ORIG"
SERVER_PORT=$(( $SERVER_PORT_ORIG + 1 ))
echo " * Intermediate port: $SERVER_PORT"
TPXY_CMD=\
"$TPXY_BIN $PROXY_PARAMS "\
"listen_port=$SERVER_PORT_ORIG "\
"server_port=$SERVER_PORT "\
"server_addr=$SERVER_ADDR_ORIG "\
"listen_addr=$SERVER_ADDR_ORIG"
echo " * Start proxy in background ..."
if [ $VERBOSE -gt 0 ]; then
echo "[ $TPXY_CMD ]"
fi
$TPXY_CMD >/dev/null 2>&1 &
TPXY_PID=$!
if [ $VERBOSE -gt 0 ]; then
echo " * Proxy ID: $TPXY_PID"
fi
SERVER_PARAMS_NEW=$(echo $SERVER_PARAMS | sed -n -r "s/^(.*server_port=)[0-9]+(.*)$/\1$SERVER_PORT\2/p")
SRV_CMD="$SRV_BIN $SERVER_PARAMS_NEW"
echo " * Starting server ..."
if [ $VERBOSE -gt 0 ]; then
echo "[ $SRV_CMD ]"
fi
$SRV_CMD >&2 &
SRV_PID=$!
wait $SRV_PID
stop_proxy
return 0