blob: 19fe3da6b84d3988e3153e4f3fe25111d23ae914 [file] [log] [blame]
#!/bin/bash
# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# $1 = hostname, $2 = port
#
# Use socat to connect to the specified host and port via one of the proxies
# defined in the environment, if the target host does not appear in the
# no_proxy environment variable.
DEST_HOST="$1"
DEST_PORT="$2"
# Determine whether the destination host is in the "no_proxy" list.
use_proxy="true"
GLOBIGNORE="*"
for a_host in ${no_proxy//,/ } ; do
case "${a_host}" in
"*") # A "*" matches all hosts.
use_proxy="false"
break
;;
.*) # Items of the form ".some.fqdn" imply match-at-end.
if [[ "${DEST_HOST}" == *"${a_host}" ]]; then
use_proxy="false"
break
fi
;;
${DEST_HOST}) # Items of the form "some.fqdn" imply exact-match.
use_proxy="false"
break
;;
esac
done
if [[ -n "${all_proxy}" ]]; then
PROXY="${all_proxy}"
TYPE=SOCKS4
PORT_ATTR=socksport
elif [[ -n "${https_proxy}" ]]; then
PROXY="${https_proxy}"
TYPE=PROXY
PORT_ATTR=proxyport
elif [[ -n "${http_proxy}" ]]; then
PROXY="${http_proxy}"
TYPE=PROXY
PORT_ATTR=proxyport
else
use_proxy="false"
fi
if [[ "${use_proxy}" == "true" ]]; then
PROXY="${PROXY#*://}"
PROXY="${PROXY%%/*}"
PROXY_HOST="${PROXY%%:*}"
PROXY_PORT="${PROXY##*:}"
PARMS="${PROXY_HOST}:${DEST_HOST}:${DEST_PORT},${PORT_ATTR}=${PROXY_PORT}"
socat_args=( "${TYPE}:${PARMS}" )
else
socat_args=( TCP:"${DEST_HOST}":"${DEST_PORT}" )
fi
exec socat STDIO "${socat_args[@]}"