wget/contrib/tsocked-wget
2014-11-05 09:19:21 +01:00

91 lines
2.8 KiB
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#!/bin/bash
# Script that executes wget using a socks proxy if the environment variable
# socks_proxy is set.
#
# The socks_proxy variable shall have one of the forms:
# socks://username:password@host:port
# socks4://username:password@host:port
# socks5://username:password@host:port
# with username, password and port fields being optional
#
# As socksification applies to the whole process, domains defined in the
# no_proxy setting are *not* excluded.
#
# Requisites: bash (version 3.2.3 or later), tsocks and wget
####################################
# Copyright (C) 2014 Ángel González
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
set -eu
# Binary to be executed. Use an absolute path if installing this script as 'wget'
WGET=wget
if [ -z "${socks_proxy:-}" ]; then
exec "$WGET" "$@"
fi
CONFIG=""
if [[ "${socks_proxy}" =~ ^socks[45]?:// ]]; then
if [[ "${socks_proxy:5:1}" != ":" ]]; then
CONFIG+="server_type = ${socks_proxy:5:1}"
socks_proxy="${socks_proxy:9}"
else
socks_proxy="${socks_proxy:8}"
fi
elif [[ "${socks_proxy}" =~ ^[[:alnum:]]*:// ]]; then
echo "Bad value specified for socks_proxy: $socks_proxy" >&2
exit 2
fi
if [[ "${socks_proxy}" =~ ^([^@:]*)(:([^@]*))?@ ]]; then
unset TSOCKS_USERNAME
CONFIG+="
default_user = ${BASH_REMATCH[1]}"
if [ ! -z "${BASH_REMATCH[3]}" ]; then
unset TSOCKS_PASSWORD
CONFIG+="
default_pass = ${BASH_REMATCH[3]}"
fi
socks_proxy="${socks_proxy:${#BASH_REMATCH[0]}}"
fi
# Get rid of trailing slashes
if [[ "${socks_proxy}" =~ ^([^/]*)/ ]]; then
socks_proxy="${socks_proxy:0:${#BASH_REMATCH[1]}}"
fi
if [[ "${socks_proxy}" =~ :([0-9]+)$ ]]; then
CONFIG+="
server_port = ${BASH_REMATCH[1]}"
socks_proxy=${socks_proxy:0:${#socks_proxy} - ${#BASH_REMATCH[0]}}
fi
CONFIG+="
server = ${socks_proxy}"
TSOCKS_CONF_FILE=<(echo "$CONFIG") exec tsocks "$WGET" --no-proxy "$@"