set-http-proxy

#!/bin/bash

# make sure, script is sourced
EXECUTED=`echo "$BASH"`
if [[ "$EXECUTED" != "" ]]; then
  echo "the script must be sourced not executed. Aborting"
  exit 1
fi

# make sure, script runs on OS X
if [ "Darwin" != `uname` ]; then 
    echo "This script is only tested on OSX. Aborting"
    return 1
fi

# make sure, pacparser is installed
type pacparser >/dev/null 2>&1 || { echo >&2 "'pacparser' required.  Aborting."; return 2; }

NETWORK=$1
if [ -z "$NETWORK" ]; then
  echo "using 'Wi-Fi'  (call 'networksetup -listallnetworkservices' for a list of network services)"
  NETWORK="Wi-Fi"
  # networksetup -listallnetworkservices
fi

function enabled() {
  echo "$1" | grep "^Enabled" | sed "s/[a-zA-Z]*: \(.*\)/\1/"
}


#--------------------------------------------------------------------------------------------------
# MAIN
#--------------------------------------------------------------------------------------------------

# proxy explicitely set?
PROXY_INFO=`networksetup -getwebproxy "$NETWORK"`
PROXY_ENABLED=`enabled "$PROXY_INFO"`

if [ "$PROXY_ENABLED" = "Yes" ]; then 
  export PROXY_HOST=`echo "$PROXY_INFO" | grep Server | sed "s/[a-zA-Z]*: \(.*\)/\1/"`
  export PROXY_PORT=`echo "$PROXY_INFO" | grep Port | sed "s/[a-zA-Z]*: \(.*\)/\1/"`
  PROXY="$PROXY_HOST:$PROXY_PORT"
else
  # proxy not explicitely set, try proxy.pac
  PROXY_INFO=`networksetup -getautoproxyurl $NETWORK`
  PROXY_ENABLED=`enabled "$PROXY_INFO"`
  if [ "$PROXY_ENABLED" = "Yes" ]; then 
    PROXY_PAC=`echo "$PROXY_INFO" | grep "^URL:" | sed "s/URL: //"`
    echo "proxy.pac: $PROXY_PAC"
    if [ -e /tmp/proxy.pac ]; then 
      if test "`find /tmp/proxy.pac -mmin +1440`"; then 
        curl $PROXY_PAC > /tmp/proxy.pac
      fi
    else
      curl $PROXY_PAC > /tmp/proxy.pac
    fi 
    PROXY=`pacparser | sed "s/PROXY //"`
    PROXY_PARTS=( `echo "$PROXY" | tr -s ':' ' '` )
    export PROXY_HOST="$PROXY_PARTS[1]"
    export PROXY_PORT="$PROXY_PARTS[2]"
  fi
fi

echo "$PROXY"

# set/unset environment variables, git and Maven settings
if [ "$PROXY_ENABLED" = "Yes" ]; then 
  echo "setting http_proxy: $PROXY"
  export http_proxy=`echo "$PROXY"`
  export https_proxy=`echo "$PROXY"`
  git config --global http.proxy "http://$PROXY"
  mvn-proxy-patch true
else 
  echo "unset http_proxy"
  export http_proxy=
  git config --global --unset http.proxy
  mvn-proxy-patch false
fi