#!/bin/bash

# NOTE: OMG - evidently 'read' can't be part of a pipeline if you want to export the variables
function child_of_sshd ()
{
    unset pid2ppid
    unset pid2cmd
    while read xPID xPPID xO ; do 
        
        pid2ppid[$xPID]="$xPPID"
        pid2cmd[$xPID]="$xO"
        
    done < <( ps ax -opid,ppid,cmd | grep -E "sshd|bash" )

    pid=$$
    while /bin/true ; do 
        # is the working PID part of the pid2ppid mapping?
        if echo ${!pid2ppid[@]} | grep -q $pid ; then
            pid=${pid2ppid[$pid]}
        else
            break
        fi
        # is the working PID command sshd?
        if echo "${pid2cmd[$pid]}" | grep -q 'sshd' ; then
            # then success; we're a child or sshd
            return 0
        fi
    done
    
    # we are not a child of sshd
    return 1
}

if child_of_sshd ; then 
    export LD_PRELOAD=/usr/lib/snoopy.so
fi