#!/bin/bash

SSH_CMD=${SSH_CMD:=ssh}
SSH_USER=${SSH_USER:=USER}
SSH_PASSWORD=${SSH_PASSWORD:=fakepassword}
SCRIPTDIR=$(dirname $0)

trap cleanup INT TERM EXIT

askpass() {
        echo $SSH_PASSWORD
}

cleanup() {
    rm $SSHCFG
}

if [ -z "$SSH_USER" ]; then
    echo Could not obtain username from SSH_USER>&2
    exit 1
fi

# when ssh run the SSH_ASKPASS command, it will have itself in the SSH_ASKPASS environment variable. we can detect which type of "invokation" we're in
if [ -z "$SSH_ASKPASS" ]; then
        # DISPLAY isn't used and its content is irrelevant. but ssh requires it to be set
        export DISPLAY="dummy:0"
        # set the script to run to ourselves. this will hit the second branch of the if block
        export SSH_ASKPASS=$0

        if [[ "$SSH_CMD" == "ssh" ]]; then
            setsid $SSH_CMD -F $SSHCFG -l $USER "$@"
        else
            echo "Note: Not using ssh command, make sure you're using the username $USER" >&2
            setsid $SSH_CMD "$@"
        fi
else
        askpass
fi