LinuxGSM/lgsm/functions/command_details.sh

#!/bin/bash -x
# LGSM command_postdetails.sh function
# Author: CedarLUG
# Contributor: CedarLUG
# Website: https://gameservermanagers.com
# Description: Strips sensitive information out of Details output

local commandname="POSTDETAILS"
local commandaction="Postdetails"
local function_selfname="$(basename $(readlink -f "${BASH_SOURCE[0]}"))"

# POSTDETAILS variable affects the output of command_details.sh.  Setting
# it here silences the output from sourcing command_details.sh.
POSTDETAILS=yes

# Set POSTTARGET to the appropriately-defined post destination.  The present
# option is only pastebin, but hastebin is on the todo list (and should be
# a lot easier than pastebin.
#
# Another reason for an alternative here is that pastebin limits guest
# posts to 10 per day, which might be a tight limit for some debugging situations.
 
#POSTTARGET="http://pastebin.com"
POSTTARGET="http://hastebin.com"
POSTEXPIRE="1W" # use 1 week as the default, other options are '24h' for a day, etc.

# This file sources the command_details.sh file to leverage all
# of the already-defined functions.  To keep the command_details.sh
# from actually producing output, the main executable statements have
# been wrapped in the equivalent of an ifdef clause, that looks
# for the variable "postdetails" to be defined. -CedarLUG

# source all of the functions defined in the details command
. ${functionsdir}/command_details.sh

fn_bad_tmpfile() {
	echo "There was a problem creating a temporary file ${tmpfile}."
	core_exit.sh
}

fn_gen_rand() {
	# This is just a simple random generator to generate a random
 	# name for storing the output.  Named pipes would (possibly) be
	# better. -CedarLUG
	#
	# len holds the number of digits in our random string
	local len=$1
	# If not specified, default to 10.
       	: {len:=10}
	# Quick generator for a random filename, pulled from /dev/urandom
      	tr -dc A-Za-z0-9_ < /dev/urandom | head -c ${len} | xargs
}

# Rather than a one-pass sed parser, default to using a temporary directory
filedir="${lgsmdir}/tmp"

# Not all game servers possess a tmp directory.  So create it if
# it doesn't already exist
mkdir -p ${filedir} 2>&1 >/dev/null

tmpfile=${filedir}/$(fn_gen_rand 10).tmp

touch ${tmpfile} || fn_bad_tmpfile

# fn_display_details is found in the command_details.sh file (which 
# was sourced above.  The output is parsed for passwords and other
# confidential information. -CedarLUG

# The numerous sed lines could certainly be condensed quite a bit,
# but they are separated out to provide examples for how to add
# additional criteria in a straight-forward manner.
# (This was originally a sed one-liner.) -CedarLUG

fn_display_details | sed -e 's/password="[^"]*/password="--stripped--/' |
                sed -e 's/password "[^"]*/password "--stripped--/' |
                sed -e 's/password: .*/password: --stripped--/' |
                sed -e 's/gslt="[^"]*/gslt="--stripped--/' |
                sed -e 's/gslt "[^"]*/gslt "--stripped--/' |
                sed -e 's/pushbullettoken="[^"]*/pushbullettoken="--stripped--/' |
                sed -e 's/pushbullettoken "[^"]*/pushbullettoken "--stripped--/' |
                sed -e 's/authkey="[^"]*/authkey="--stripped--/' |
                sed -e 's/authkey "[^"]*/authkey "--stripped--/' |
                sed -e 's/authkey [A-Za-z0-9]\+/authkey --stripped--/' |
                sed -e 's/rcts_strAdminPassword="[^"]*/rcts_strAdminPassword="--stripped--/' |
                sed -e 's/rcts_strAdminPassword "[^"]*/rcts_strAdminPassword "--stripped--/' |
                sed -e 's/sv_setsteamaccount [A-Za-z0-9]\+/sv_setsteamaccount --stripped--/' |
                sed -e 's/sv_password="[^"]*/sv_password="--stripped--/' |
                sed -e 's/sv_password "[^"]*/sv_password "--stripped--/' |
                sed -e 's/zmq_stats_password="[^"]*/zmq_stats_password="--stripped--/' |
                sed -e 's/zmq_stats_password "[^"]*/zmq_stats_password "--stripped--/' |
                sed -e 's/zmq_rcon_password="[^"]*/zmq_rcon_password="--stripped--/' |
                sed -e 's/zmq_rcon_password "[^"]*/zmq_rcon_password "--stripped--/' |
                sed -e 's/pass="[^"]*/pass="--stripped--/' |
                sed -e 's/pass "[^"]*/pass "--stripped--/' |
                sed -e 's/rconServerPassword="[^"]*/rconServerPassword="--stripped--/' |
                sed -e 's/rconServerPassword "[^"]*/rconServerPassword "--stripped--/' > ${tmpfile}

# strip off all console escape codes (colorization)
sed -i -r "s/[\x1B,\x0B]\[([0-9]{1,2}(;[0-9]{1,2})?)?[mGK]//g" ${tmpfile}

# If the gameserver uses anonymous steam credentials, leave them displayed
# in the output.  Otherwise, strip these out as well.
if ! grep -q "^steampass[= ]\"\"" ${tmpfile} ; then
	sed -i -e 's/steampass[= ]"[^"]*/steampass "--stripped--/' ${tmpfile}
fi
if ! grep -q "^steamuser[= ]\"anonymous\"" ${tmpfile} ; then
	sed -i -e 's/steamuser[= ]"[^"]*/steamuser "--stripped--/' ${tmpfile}
fi

if [ "$POSTTARGET" == "http://pastebin.com" ] ; then 
   # grab the return from 'value' from an initial visit to pastebin.
   TOKEN=$(curl -s $POSTTARGET |
           sed -n 's/^.*input type="hidden" name="csrf_token_post" value="\(.*\)".*$/\1/p')
   # 
   # Use the TOKEN to then post the content.
   #
   link=$(curl -s "$POSTTARGET/post.php" -D - -F "submit_hidden=submit_hidden" \
	       -F "post_key=$TOKEN" -F "paste_expire_date=${POSTEXPIRE}" \
	       -F "paste_name=${gamename} Debug Info" \
               -F "paste_format=8" -F "paste_private=0" \
               -F "paste_type=bash" -F "paste_code=<${tmpfile}" |
	       awk '/^location: / { print $2 }' | sed "s/\n//g")

   # Output the resulting link.
   fn_print_warn_nl "You now need to visit (and verify) the content posted at ${POSTTARGET}${link}"
elif [ "$POSTTARGET" == "http://hastebin.com" ] ; then
   # hastebin is a bit simpler.  If successful, the returned result
   # should look like: {"something":"key"}, putting the reference that
   # we need in "key".  TODO - error handling. -CedarLUG
   link=$(curl -s -d "$(<${tmpfile})" ${POSTTARGET}/documents| cut -d\" -f4) 
   fn_print_warn_nl "You now need to visit (and verify) the content posted at ${POSTTARGET}/${link}"
fi

# cleanup
rm ${tmpfile} || /bin/true

core_exit.sh