88 lines
2.8 KiB
Bash
Executable File
88 lines
2.8 KiB
Bash
Executable File
#!/bin/sh
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set -eu
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# Create additional groups
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_IFS=${IFS}; IFS=,
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for gid in ${UNPRIVILEGED_USER_GROUPS?}; do
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if ! getent group "${gid:?}" >/dev/null 2>&1; then
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groupadd --gid "${gid:?}" "g_${gid:?}"
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fi
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done
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IFS=$_IFS
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# Create unprivileged user and group
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if ! getent group "${UNPRIVILEGED_USER_GID:?}" >/dev/null 2>&1; then
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groupadd --gid "${UNPRIVILEGED_USER_GID:?}" "${UNPRIVILEGED_USER_NAME:?}"
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fi
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if ! getent passwd "${UNPRIVILEGED_USER_UID:?}" >/dev/null 2>&1; then
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useradd \
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--uid "${UNPRIVILEGED_USER_UID:?}" \
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--gid "${UNPRIVILEGED_USER_GID:?}" \
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--groups "${UNPRIVILEGED_USER_GROUPS?}" \
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--shell "${UNPRIVILEGED_USER_SHELL:?}" \
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--create-home \
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"${UNPRIVILEGED_USER_NAME:?}"
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fi
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# Copy /etc/skel/ to unprivileged user home if empty
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UNPRIVILEGED_USER_HOME=$(getent passwd "${UNPRIVILEGED_USER_NAME:?}" | cut -d: -f6)
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if [ -z "$(ls -A "${UNPRIVILEGED_USER_HOME:?}")" ]; then
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cp -aT /etc/skel/ "${UNPRIVILEGED_USER_HOME:?}"
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chown -R "${UNPRIVILEGED_USER_NAME:?}:" "${UNPRIVILEGED_USER_HOME:?}"
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fi
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# Create /run/user/${UNPRIVILEGED_USER_UID}/dbus-1/ directory
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mkdir -p /run/user/"${UNPRIVILEGED_USER_UID:?}"/dbus-1/
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chmod -R 700 /run/user/"${UNPRIVILEGED_USER_UID:?}"/
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chown -R "${UNPRIVILEGED_USER_NAME:?}:" /run/user/"${UNPRIVILEGED_USER_UID:?}"/
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# Set unprivileged user password
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if [ -n "${UNPRIVILEGED_USER_PASSWORD?}" ]; then
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printf '%s' "${UNPRIVILEGED_USER_NAME:?}:${UNPRIVILEGED_USER_PASSWORD:?}" | chpasswd
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else
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passwd -d "${UNPRIVILEGED_USER_NAME:?}"
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fi
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# Enable xdummy service if ENABLE_XDUMMY is true
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if [ "${ENABLE_XDUMMY:?}" = 'true' ]; then
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ln -s /etc/sv/xdummy /etc/service/
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fi
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# Create RANDFILE if it does not exist
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RANDFILE=${RANDFILE-${HOME:?}/.rnd}
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if [ ! -f "${RANDFILE:?}" ] && [ -c /dev/urandom ]; then
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dd if=/dev/urandom of="${RANDFILE:?}" bs=256 count=1 >/dev/null 2>&1
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fi
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# Generate SSH keys if they do not exist
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if [ ! -f /etc/ssh/ssh_host_ed25519_key ]; then
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ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N '' >/dev/null
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fi
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if [ ! -f /etc/ssh/ssh_host_rsa_key ]; then
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ssh-keygen -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key -N '' >/dev/null
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fi
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# Generate RDP certificate if it does not exist
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if [ ! -f "${XRDP_TLS_KEY_PATH:?}" ] || [ ! -f "${XRDP_TLS_CRT_PATH:?}" ]; then
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KEY_FILE=${XRDP_TLS_KEY_PATH:?}
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CRT_FILE=${XRDP_TLS_CRT_PATH:?}
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CSR_FILE=$(mktemp -u)
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(umask 077 \
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&& openssl genrsa -out "${KEY_FILE:?}" 2048 \
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) >/dev/null
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(umask 022 \
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&& openssl req -new -subj "/CN=$(uname -n)" -key "${KEY_FILE:?}" -out "${CSR_FILE:?}" \
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&& openssl x509 -req -days 3650 -signkey "${KEY_FILE:?}" -in "${CSR_FILE:?}" -out "${CRT_FILE:?}" \
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&& rm -f "${CSR_FILE:?}" \
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) >/dev/null
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fi
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# Dump environment variables
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env | grep -Ev '^(PWD|HOME|USER|USERNAME|SHELL|TERM|SHLVL)=' | sort > /etc/environment
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# Start runit
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exec tini -- runsvdir -P /etc/service/
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