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|
#!/bin/sh
# Control and query a Shelly Plug M Gen 3 via its HTTP RPC API.
#
# Usage:
# shelly-plug.sh [host] <command>
#
# Commands:
# status Show power, voltage, current, energy and temperature
# on Turn the plug on
# off Turn the plug off
# toggle Toggle the plug
# info Show device info (model, firmware, mac)
#
# The host defaults to 192.168.1.28 and can be overridden by the first
# argument or the SHELLY_HOST environment variable.
#
# If the device has authentication enabled, the password is read from the
# SHELLY_PASS environment variable, or from ~/.shelly_plug if that is unset
# (the username is always "admin" on Shelly Gen3). Digest auth is used
# automatically when a password is available.
set -eu
DEFAULT_HOST="192.168.1.28"
PASS_FILE="${HOME}/.shelly_plug"
# Argument forms:
# (none) -> host=default, command=status
# <command> -> host=default, command=<command>
# <host> <command> -> explicit host and command
if [ "$#" -ge 2 ]; then
HOST="$1"
CMD="$2"
elif [ "$#" -eq 1 ]; then
HOST="${SHELLY_HOST:-$DEFAULT_HOST}"
CMD="$1"
else
HOST="${SHELLY_HOST:-$DEFAULT_HOST}"
CMD="status"
fi
BASE="http://${HOST}"
# Resolve the password: SHELLY_PASS wins, otherwise read it from PASS_FILE.
PASS="${SHELLY_PASS:-}"
if [ -z "$PASS" ] && [ -r "$PASS_FILE" ]; then
PASS="$(head -n 1 "$PASS_FILE" | tr -d '\r\n')"
fi
# Build optional digest-auth args when a password is available.
AUTH=""
if [ -n "$PASS" ]; then
AUTH="--digest -u admin:${PASS}"
fi
rpc() {
# shellcheck disable=SC2086
curl -s --max-time 5 $AUTH "${BASE}/rpc/$1"
}
case "$CMD" in
status)
rpc "Switch.GetStatus?id=0"
echo
;;
on)
rpc "Switch.Set?id=0&on=true"
echo
;;
off)
rpc "Switch.Set?id=0&on=false"
echo
;;
toggle)
rpc "Switch.Toggle?id=0"
echo
;;
info)
curl -s --max-time 5 "${BASE}/shelly"
echo
;;
*)
echo "Unknown command: $CMD" >&2
echo "Use one of: status, on, off, toggle, info" >&2
exit 1
;;
esac
|
