mirror of
https://github.com/openziti/zrok.git
synced 2024-11-28 11:04:04 +01:00
241 lines
8.6 KiB
Bash
241 lines
8.6 KiB
Bash
#!/usr/bin/env bash
|
|
#
|
|
# this script shares the configured backend for a reserved share token
|
|
#
|
|
|
|
set -o errexit
|
|
set -o nounset
|
|
set -o pipefail
|
|
|
|
share_reserved(){
|
|
local token="$1"
|
|
local target="$2"
|
|
shift 2
|
|
local opts="${*:-}"
|
|
local zrok_cmd="share reserved ${token} --headless ${opts} --override-endpoint ${target}"
|
|
echo "INFO: running: zrok ${zrok_cmd}"
|
|
exec zrok ${zrok_cmd}
|
|
}
|
|
|
|
if ! command -v jq &>/dev/null; then
|
|
echo "ERROR: jq is needed but not installed" >&2
|
|
exit 1
|
|
fi
|
|
|
|
# set HOME to the first colon-sep dir in STATE_DIRECTORY inherited from systemd (/var/lib/zrok-share) or docker (/mnt)
|
|
if [[ -n "${STATE_DIRECTORY:-}" ]]; then
|
|
export HOME="${STATE_DIRECTORY%:*}"
|
|
else
|
|
echo "WARNING: STATE_DIRECTORY is undefined. Using HOME=${HOME}" >&2
|
|
fi
|
|
echo "DEBUG: zrok state directory is ${HOME}/.zrok"
|
|
|
|
: "${ZROK_SHARE_RESERVED:=true}"
|
|
|
|
echo "DEBUG: ZROK_SHARE_RESERVED=${ZROK_SHARE_RESERVED}"
|
|
|
|
if (( $# )); then
|
|
if [[ -s "$1" ]]; then
|
|
echo "INFO: reading share configuration from $1"
|
|
source "$1"
|
|
shift
|
|
else
|
|
echo "ERROR: '$1' is empty or not readable" >&2
|
|
exit 1
|
|
fi
|
|
else
|
|
# TODO: consider defining a default environment file
|
|
# if [[ -s /opt/openziti/etc/zrok.env ]]; then
|
|
# source /opt/openziti/etc/zrok.env
|
|
# else
|
|
# echo "ERROR: need /opt/openziti/etc/zrok.env or filename argument to read share configuration" >&2
|
|
# exit 1
|
|
# fi
|
|
echo "INFO: reading share configuration from environment variables"
|
|
fi
|
|
|
|
[[ -n "${ZROK_TARGET:-}" ]] || {
|
|
echo "ERROR: ZROK_TARGET is not defined." >&2
|
|
exit 1
|
|
}
|
|
|
|
# default mode is 'reserved-public', override modes are reserved-private, temp-public, temp-private.
|
|
: "${ZROK_FRONTEND_MODE:=reserved-public}"
|
|
if [[ "${ZROK_FRONTEND_MODE:-}" == temp-public ]]; then
|
|
ZROK_CMD="share public --headless ${ZROK_VERBOSE:-}"
|
|
elif [[ "${ZROK_FRONTEND_MODE:-}" == temp-private ]]; then
|
|
ZROK_CMD="share private --headless ${ZROK_VERBOSE:-}"
|
|
elif [[ -s ~/.zrok/reserved.json ]]; then
|
|
ZROK_RESERVED_TOKEN="$(jq -r '.token' ~/.zrok/reserved.json 2>/dev/null)"
|
|
if [[ -z "${ZROK_RESERVED_TOKEN}" || "${ZROK_RESERVED_TOKEN}" == null ]]; then
|
|
echo "ERROR: invalid reserved.json: '$(jq -c . ~/.zrok/reserved.json)'" >&2
|
|
exit 1
|
|
else
|
|
echo "INFO: zrok backend is already reserved: ${ZROK_RESERVED_TOKEN}"
|
|
ZROK_CMD="${ZROK_RESERVED_TOKEN} ${ZROK_TARGET}"
|
|
ZROK_CMD+=" ${ZROK_VERBOSE:-} ${ZROK_INSECURE:-}"
|
|
if [[ "${ZROK_SHARE_RESERVED}" == true ]]; then
|
|
share_reserved ${ZROK_CMD}
|
|
else
|
|
echo "INFO: finished reserving zrok backend, continuing without sharing"
|
|
exit 0
|
|
fi
|
|
fi
|
|
elif [[ "${ZROK_FRONTEND_MODE:-}" == reserved-public ]]; then
|
|
ZROK_CMD="reserve public --json-output ${ZROK_VERBOSE:-}"
|
|
elif [[ "${ZROK_FRONTEND_MODE:-}" == reserved-private ]]; then
|
|
ZROK_CMD="reserve private --json-output ${ZROK_VERBOSE:-}"
|
|
else
|
|
echo "ERROR: invalid value for ZROK_FRONTEND_MODE '${ZROK_FRONTEND_MODE}'" >&2
|
|
exit 1
|
|
fi
|
|
|
|
[[ -n "${ZROK_BACKEND_MODE:-}" ]] || {
|
|
echo "WARNING: ZROK_BACKEND_MODE was not defined, assuming mode 'proxy'." >&2
|
|
ZROK_BACKEND_MODE="proxy"
|
|
}
|
|
|
|
case "${ZROK_BACKEND_MODE}" in
|
|
proxy)
|
|
if ! [[ "${ZROK_TARGET}" =~ ^https?:// ]]; then
|
|
echo "ERROR: ZROK_TARGET='${ZROK_TARGET}' is not an HTTP URL" >&2
|
|
exit 1
|
|
else
|
|
echo "INFO: validated backend mode '${ZROK_BACKEND_MODE}' and target '${ZROK_TARGET}'"
|
|
fi
|
|
;;
|
|
caddy)
|
|
if ! [[ "${ZROK_TARGET}" =~ ^/ ]]; then
|
|
echo "ERROR: ZROK_TARGET='${ZROK_TARGET}' is not an absolute filesystem path" >&2
|
|
exit 1
|
|
elif ! [[ -f "${ZROK_TARGET}" && -r "${ZROK_TARGET}" ]]; then
|
|
echo "ERROR: ZROK_TARGET='${ZROK_TARGET}' is not a readable regular file" >&2
|
|
exit 1
|
|
else
|
|
echo "INFO: validated backend mode ${ZROK_BACKEND_MODE} and target ${ZROK_TARGET}"
|
|
fi
|
|
;;
|
|
web|drive)
|
|
if ! [[ "${ZROK_TARGET}" =~ ^/ ]]; then
|
|
echo "ERROR: ZROK_TARGET='${ZROK_TARGET}' is not an absolute filesystem path" >&2
|
|
exit 1
|
|
elif ! [[ -d "${ZROK_TARGET}" && -r "${ZROK_TARGET}" ]]; then
|
|
echo "ERROR: ZROK_TARGET='${ZROK_TARGET}' is not a readable directory" >&2
|
|
exit 1
|
|
else
|
|
echo "INFO: validated backend mode ${ZROK_BACKEND_MODE} and target ${ZROK_TARGET}"
|
|
fi
|
|
;;
|
|
tcpTunnel|udpTunnel|socks|vpn)
|
|
if ! [[ "${ZROK_FRONTEND_MODE}" =~ -private$ ]]; then
|
|
echo "ERROR: ZROK_BACKEND_MODE='${ZROK_BACKEND_MODE}' is a private share backend mode and cannot be used with ZROK_FRONTEND_MODE='${ZROK_FRONTEND_MODE}'" >&2
|
|
exit 1
|
|
else
|
|
case "${ZROK_BACKEND_MODE}" in
|
|
tcpTunnel|udpTunnel)
|
|
echo "INFO: ${ZROK_BACKEND_MODE} backend mode has target '${ZROK_TARGET}'"
|
|
;;
|
|
vpn)
|
|
if [[ -n "${ZROK_TARGET}" ]]; then
|
|
ZROK_SVC_FILE=/etc/systemd/system/zrok-share.service.d/override.conf
|
|
if ! grep -qE '^AmbientCapabilities=CAP_NET_ADMIN' "${ZROK_SVC_FILE}"; then
|
|
echo "ERROR: you must uncomment 'AmbientCapabilities=CAP_NET_ADMIN' in '${ZROK_SVC_FILE}'"\
|
|
"and run 'systemctl daemon-reload' to enable VPN mode" >&2
|
|
exit 1
|
|
fi
|
|
fi
|
|
;;
|
|
socks)
|
|
if [[ -n "${ZROK_TARGET}" ]]; then
|
|
echo "WARNING: ZROK_TARGET='${ZROK_TARGET}' is ignored with ZROK_BACKEND_MODE='${ZROK_BACKEND_MODE}'" >&2
|
|
unset ZROK_TARGET
|
|
fi
|
|
;;
|
|
esac
|
|
fi
|
|
;;
|
|
*)
|
|
echo "WARNING: ZROK_BACKEND_MODE='${ZROK_BACKEND_MODE}' is not a recognized mode for a zrok public share."\
|
|
" ZROK_TARGET value will not validated before running." >&2
|
|
;;
|
|
esac
|
|
|
|
if [[ "${ZROK_FRONTEND_MODE:-}" =~ ^reserved- && -n "${ZROK_UNIQUE_NAME:-}" ]]; then
|
|
ZROK_CMD+=" --unique-name ${ZROK_UNIQUE_NAME}"
|
|
elif [[ -n "${ZROK_UNIQUE_NAME:-}" ]]; then
|
|
echo "WARNING: ZROK_UNIQUE_NAME='${ZROK_UNIQUE_NAME}' is ignored with ZROK_FRONTEND_MODE='${ZROK_FRONTEND_MODE}'" >&2
|
|
fi
|
|
|
|
if [[ "${ZROK_FRONTEND_MODE:-}" =~ -private$ && "${ZROK_PERMISSION_MODE:-}" == closed ]]; then
|
|
ZROK_CMD+=" --closed"
|
|
if [[ -n "${ZROK_ACCESS_GRANTS:-}" ]]; then
|
|
for ACCESS_GRANT in ${ZROK_ACCESS_GRANTS}; do
|
|
ZROK_CMD+=" --access-grant ${ACCESS_GRANT}"
|
|
done
|
|
else
|
|
echo "WARNING: ZROK_PERMISSION_MODE='${ZROK_PERMISSION_MODE}' and no additional ZROK_ACCESS_GRANTS; will be granted access" >&2
|
|
exit 1
|
|
fi
|
|
elif [[ "${ZROK_FRONTEND_MODE:-}" =~ -private$ && -n "${ZROK_PERMISSION_MODE:-}" && "${ZROK_PERMISSION_MODE}" != open ]]; then
|
|
echo "WARNING: ZROK_PERMISSION_MODE='${ZROK_PERMISSION_MODE}' is not a recognized value'" >&2
|
|
elif [[ "${ZROK_FRONTEND_MODE:-}" =~ -public$ && -n "${ZROK_PERMISSION_MODE:-}" ]]; then
|
|
echo "WARNING: ZROK_PERMISSION_MODE='${ZROK_PERMISSION_MODE}' is ignored with ZROK_FRONTEND_MODE='${ZROK_FRONTEND_MODE}'" >&2
|
|
fi
|
|
|
|
ZROK_CMD+=" --backend-mode ${ZROK_BACKEND_MODE} ${ZROK_TARGET}"
|
|
|
|
if [[ -n "${ZROK_SHARE_OPTS:-}" ]]; then
|
|
ZROK_CMD+=" ${ZROK_SHARE_OPTS}"
|
|
fi
|
|
|
|
if [[ -n "${ZROK_OAUTH_PROVIDER:-}" ]]; then
|
|
ZROK_CMD+=" --oauth-provider ${ZROK_OAUTH_PROVIDER}"
|
|
if [[ -n "${ZROK_OAUTH_EMAILS:-}" ]]; then
|
|
for EMAIL in ${ZROK_OAUTH_EMAILS}; do
|
|
ZROK_CMD+=" --oauth-email-address-patterns ${EMAIL}"
|
|
done
|
|
fi
|
|
elif [[ -n "${ZROK_BASIC_AUTH:-}" ]]; then
|
|
ZROK_CMD+=" --basic-auth ${ZROK_BASIC_AUTH}"
|
|
fi
|
|
|
|
echo "INFO: running: zrok ${ZROK_CMD}"
|
|
|
|
if [[ "${ZROK_FRONTEND_MODE:-}" =~ ^temp- ]]; then
|
|
# frontend mode starts with 'temp-', so is temporary.
|
|
# share without reserving until exit.
|
|
exec zrok ${ZROK_CMD}
|
|
else
|
|
# reserve and continue
|
|
zrok ${ZROK_CMD} > ~/.zrok/reserved.json
|
|
# share the reserved backend target until exit
|
|
if ! [[ -s ~/.zrok/reserved.json ]]; then
|
|
echo "ERROR: empty or missing $(realpath ~/.zrok)/reserved.json" >&2
|
|
exit 1
|
|
elif ! jq . < ~/.zrok/reserved.json &>/dev/null; then
|
|
echo "ERROR: invalid JSON in $(realpath ~/.zrok)/reserved.json" >&2
|
|
exit 1
|
|
else
|
|
ZROK_PUBLIC_URLS=$(jq -cr '.frontend_endpoints' ~/.zrok/reserved.json 2>/dev/null)
|
|
if [[ -z "${ZROK_PUBLIC_URLS}" || "${ZROK_PUBLIC_URLS}" == null ]]; then
|
|
echo "ERROR: frontend endpoints not defined in $(realpath ~/.zrok)/reserved.json" >&2
|
|
exit 1
|
|
else
|
|
echo "INFO: zrok public URLs: ${ZROK_PUBLIC_URLS}"
|
|
fi
|
|
ZROK_RESERVED_TOKEN=$(jq -r '.token' ~/.zrok/reserved.json 2>/dev/null)
|
|
if [[ -z "${ZROK_RESERVED_TOKEN}" || "${ZROK_RESERVED_TOKEN}" == null ]]; then
|
|
echo "ERROR: zrok reservation token not defined in $(realpath ~/.zrok)/reserved.json" >&2
|
|
exit 1
|
|
fi
|
|
ZROK_CMD="${ZROK_RESERVED_TOKEN} ${ZROK_TARGET}"
|
|
ZROK_CMD+=" ${ZROK_VERBOSE:-} ${ZROK_INSECURE:-}"
|
|
if [[ "${ZROK_SHARE_RESERVED}" == true ]]; then
|
|
share_reserved ${ZROK_CMD}
|
|
else
|
|
echo "INFO: finished reserving zrok backend, continuing without sharing"
|
|
exit 0
|
|
fi
|
|
fi
|
|
fi
|