#!/bin/bash

set -eu

# OpenShift containers run as a user with a random uid, which does not appear in
# /etc/passwd. httpd tries to look up the uid for the user it is running as
# (default in this case), and will exit if it cannot find that user in
# /etc/passwd. This script copies /etc/passwd to /tmp to make it writable, and
# appends an entry to /etc/passwd for the "default" user, using the current uid
# and gid. It then uses libnss_wrapper.so to redirect references from
# /etc/passwd to our modified file in /tmp, so httpd can run as "default".

export USER_ID=$(id -u)
export GROUP_ID=$(id -g)

cp /etc/passwd /tmp/passwd
cat >> /tmp/passwd <<EOF
default:x:${USER_ID}:${GROUP_ID}:Default Application User:${HOME}:/sbin/nologin
EOF

export LD_PRELOAD=libnss_wrapper.so
export NSS_WRAPPER_PASSWD=/tmp/passwd
export NSS_WRAPPER_GROUP=/etc/group

exec httpd -D FOREGROUND $@