net-proxy/routify/files/routify-0

   1 #! /bin/sh
   2
   3 # Wrapper script for use of the tsocks(8) transparent socksification library
   4 # See the tsocks(1) manpages.
   5
   6 # Copyright (c) 2004, 2006 Peter Palfrader
   7 # Modified by Jacob Appelbaum <jacob@appelbaum.net> April 16th 2006
   8 # Modified by Felix Bechstein <f@ub0r.de> Dec 23th 2007
   9
  10
  11 # Define and ensure we have tsocks
  12 # XXX: what if we don't have which?
  13 TSOCKS="`which tsocks`"
  14 if [ ! -x "$TSOCKS" ]
  15 then
  16         echo "$0: Can't find tsocks in PATH. Perhaps you haven't installed it?" >&2
  17         exit 1
  18 fi
  19
  20 # Define TMPDIR
  21 TMPDIR=/tmp/
  22
  23 # Check for any argument list
  24 if [ "$#" = 0 ]
  25 then
  26         echo "Usage: $0 <port/dev> <command> [<options>...]" >&2
  27         exit 1
  28 fi
  29
  30 if [ "$#" = 1 ] && ( [ "$1" = "-h" ] || [ "$1" = "--help" ] )
  31 then
  32         echo "Usage: $0 <port/dev> <command> [<options>...]"
  33         exit 0
  34 fi
  35
  36 TSOCKS_PORT=$1
  37 shift
  38
  39 if [ "$#" = 0 ]
  40 then
  41         echo "Usage: $0 <port/dev> <command> [<options>...]" >&2
  42         exit 1
  43 fi
  44 if [ "$#" = 1 ] && ( [ "$1" = "-h" ] || [ "$1" = "--help" ] )
  45 then
  46         echo "Usage: $0 <port/dev> <command> [<options>...]"
  47         exit 0
  48 fi
  49
  50 # generate config file for port/dev $TSOCKS_PORT
  51 if [ -r "${TMPDIR}routify.${TSOCKS_PORT}" ] ; then
  52         #conf file already generated. we should use that conf
  53         TSOCKS_CONF_FILE="${TMPDIR}routify.${TSOCKS_PORT}"
  54 fi
  55
  56 if echo test | nc localhost ${TSOCKS_PORT} > /dev/null 2> /dev/null ; then
  57         if [ -z "$TSOCKS_CONF_FILE" ] ; then
  58                 echo "server = 127.0.0.1" > ${TMPDIR}routify.${TSOCKS_PORT}
  59                 echo "server_port = ${TSOCKS_PORT}" >> ${TMPDIR}routify.${TSOCKS_PORT}
  60         fi
  61 else
  62         /sbin/ifconfig | grep -o "^[a-zA-Z][^ ]*" | grep -v ^lo$ > "${TMPDIR}devlist"
  63         if echo ${TSOCKS_PORT} | grep -f "${TMPDIR}devlist" > /dev/null ; then
  64                 TSOCKS_DEV=${TSOCKS_PORT}
  65                 # found device as arg
  66                 # but no proxy started for this device
  67                 if [ -z "$TSOCKS_CONF_FILE" ] ; then
  68                         TSOCKS_PORT=10080
  69                         while true ; do
  70                                 if echo test | nc localhost ${TSOCKS_PORT} > /dev/null 2> /dev/null ; then
  71                                         TSOCKS_PORT=$(expr ${TSOCKS_PORT} + 1) # search for free port
  72                                 else
  73                                         if fgrep "server_port = $TSOCKS_PORT" ${TMPDIR}routify.* > /dev/null 2> /dev/null ; then
  74                                                 TSOCKS_PORT=$(expr ${TSOCKS_PORT} + 1) # search for free port
  75                                         else
  76                                                 break
  77                                         fi
  78                                 fi
  79                         done
  80                         # generate conf file
  81                         echo "server = 127.0.0.1" > ${TMPDIR}routify.${TSOCKS_DEV}
  82                         echo "server_port = ${TSOCKS_PORT}" >> ${TMPDIR}routify.${TSOCKS_DEV}
  83                 else
  84                         # read port from conf file
  85                         TSOCKS_PORT=$(grep server_port ${TMPDIR}routify.${TSOCKS_PORT} | tr -d 'a-zA-Z =#;_')
  86                 fi
  87                 # start nylon on $TSOCKS_DEV to listen on $TSOCKS_PORT
  88                 echo test | nc localhost ${TSOCKS_PORT} 2> /dev/null > /dev/null || \
  89                         nylon -p $TSOCKS_PORT -I $TSOCKS_DEV -P ${TMPDIR}routify.${TSOCKS_DEV}.nylon
  90                 TSOCKS_CONF_FILE="${TMPDIR}routify.${TSOCKS_DEV}"
  91         else # proxy down
  92                 echo "socket-proxy is down!"
  93                 rm "${TMPDIR}devlist"
  94                 exit 1
  95         fi
  96         rm "${TMPDIR}devlist"
  97 fi
  98
  99
 100
 101 # Define our tsocks config file
 102 [ -z "$TSOCKS_CONF_FILE" ] && TSOCKS_CONF_FILE="${TMPDIR}routify.${TSOCKS_PORT}"
 103 export TSOCKS_CONF_FILE
 104
 105 # Check that we've got a tsocks config file
 106 if [ -r "$TSOCKS_CONF_FILE" ]
 107 then
 108         exec tsocks "$@"
 109         echo "$0: Failed to exec tsocks $@" >&2
 110         exit 1
 111 else
 112         echo "$0: Missing tsocks configuration file \"$TSOCKS_CONF_FILE\"." >&2
 113         exit 1
 114 fi