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#!/usr/bin/env bash
# A dot per active capture: microphone, camera, location, screen sharing.
# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
# Licensed under the GNU General Public License v2 only.
#
# dependencies: pipewire (pw-dump), jq, psmisc (fuser)
#
# Shows nothing when everything is off, which is the point: the pill only
# appears when something is actually capturing.
#
# The colours come from the palette, not from here: install.sh writes
# ~/.config/waybar-udt/dots.colors from the selected udt scheme, and this
# sources it. The defaults below are only what a missing file falls back to.
set -euo pipefail
JQ_BIN="${JQ:-jq}"
PW_DUMP_CMD="${PW_DUMP:-pw-dump}"
# Palette. Sourced, with fallbacks, so this script works standalone.
DOT_SUCCESS="#a6da95"
DOT_WARNING="#eed49f"
DOT_CRITICAL="#ed8796"
DOT_INFO="#8bd5ca"
DOT_ACCENT="#b7bdf8"
DOT_FAINT="#6e738d"
colors="$HOME/.config/waybar-udt/dots.colors"
# shellcheck source=/dev/null
[[ -r "$colors" ]] && . "$colors"
mic=0
cam=0
loc=0
scr=0
mic_app=""
cam_app=""
loc_app=""
scr_app=""
# mic & camera
if command -v "$PW_DUMP_CMD" >/dev/null 2>&1 && command -v "$JQ_BIN" >/dev/null 2>&1; then
dump="$($PW_DUMP_CMD 2>/dev/null || true)"
mic="$(
printf '%s' "$dump" \
| $JQ_BIN -r '
[ .[]
| select(.type=="PipeWire:Interface:Node")
| select((.info.props."media.class"=="Audio/Source" or .info.props."media.class"=="Audio/Source/Virtual"))
| select((.info.state=="running") or (.state=="running"))
] | (if length>0 then 1 else 0 end)
' 2>/dev/null || echo 0
)"
if [[ "$mic" -eq 1 ]]; then
mic_app="$(
printf '%s' "$dump" \
| $JQ_BIN -r '
[ .[]
| select(.type=="PipeWire:Interface:Node")
| select((.info.props."media.class"=="Stream/Input/Audio"))
| select((.info.state=="running") or (.state=="running"))
| .info.props["node.name"]
] | unique | join(", ")
' 2>/dev/null || echo ""
)"
fi
if command -v fuser >/dev/null 2>&1; then
cam=0
for dev in /dev/video*; do
if [ -e "$dev" ] && fuser "$dev" >/dev/null 2>&1; then
cam=1
break
fi
done
else
cam=0
fi
if command -v fuser >/dev/null 2>&1; then
for dev in /dev/video*; do
if [ -e "$dev" ] && fuser "$dev" >/dev/null 2>&1; then
pids=$(fuser "$dev" 2>/dev/null)
for pid in $pids; do
pname=$(ps -p "$pid" -o comm=)
if [[ -n "$pname" ]]; then
cam_app+="$pname, "
fi
done
fi
done
cam_app="${cam_app%, }"
fi
fi
# location
if command -v gdbus >/dev/null 2>&1; then
if pids=$(pgrep -x geoclue); then
loc=1
for pid in $pids; do
pname=$(ps -p "$pid" -o comm=)
[[ -n "$pname" ]] && loc_app+="$pname, "
done
loc_app="${loc_app%, }"
else
loc=0
fi
fi
# screen sharing
if command -v "$PW_DUMP_CMD" >/dev/null 2>&1 && command -v "$JQ_BIN" >/dev/null 2>&1; then
if [[ -z "${dump:-}" ]]; then
dump="$($PW_DUMP_CMD 2>/dev/null || true)"
fi
scr="$(
printf '%s' "$dump" \
| $JQ_BIN -e '
[ .[]
| select(.info?.props?)
| select(
(.info.props["media.name"]? // "")
| test("^(xdph-streaming|gsr-default)")
)
]
| (if length > 0 then true else false end)
' >/dev/null && echo 1 || echo 0
)"
fi
if [[ "$scr" -eq 1 ]]; then
scr_app="$(
printf '%s' "$dump" \
| $JQ_BIN -r '
[ .[]
| select(.type=="PipeWire:Interface:Node")
| select((.info.props."media.class"=="Stream/Input/Video") or (.info.props."media.name"=="gsr-default_output"))
| select((.info.state=="running") or (.state=="running"))
| .info.props["media.name"]
] | unique | join(", ")
' 2>/dev/null || echo ""
)"
fi
# output. Capture is a state worth noticing, so these are the alert roles:
# the microphone is the quiet one, the camera and the screen are not.
dot() {
local on="$1" color="$2"
if [[ "$on" -eq 1 ]]; then
printf '<span foreground="%s">●</span>' "$color"
else
printf ''
fi
}
dots=()
mic_dot="$(dot "$mic" "$DOT_SUCCESS")"; [[ -n "$mic_dot" ]] && dots+=("$mic_dot")
cam_dot="$(dot "$cam" "$DOT_WARNING")"; [[ -n "$cam_dot" ]] && dots+=("$cam_dot")
loc_dot="$(dot "$loc" "$DOT_INFO")"; [[ -n "$loc_dot" ]] && dots+=("$loc_dot")
scr_dot="$(dot "$scr" "$DOT_CRITICAL")"; [[ -n "$scr_dot" ]] && dots+=("$scr_dot")
text="${dots[*]}"
if [[ -n "$mic_app" ]]; then
mic_status="Mic: $mic_app"
else
mic_status="Mic: off"
fi
if [[ -n "$cam_app" ]]; then
cam_status="Cam: $cam_app"
else
cam_status="Cam: off"
fi
if [[ -n "$loc_app" ]]; then
loc_status="Location: $loc_app"
else
loc_status="Location: off"
fi
if [[ -n "$scr_app" ]]; then
scr_status="Screen sharing: $scr_app"
else
scr_status="Screen sharing: off"
fi
tooltip="$mic_status | $cam_status | $loc_status | $scr_status"
classes="privacydot"
[[ $mic -eq 1 ]] && classes="$classes mic-on" || classes="$classes mic-off"
[[ $cam -eq 1 ]] && classes="$classes cam-on" || classes="$classes cam-off"
[[ $loc -eq 1 ]] && classes="$classes loc-on" || classes="$classes loc-off"
[[ $scr -eq 1 ]] && classes="$classes scr-on" || classes="$classes scr-off"
$JQ_BIN -c -n --arg text "$text" --arg tooltip "$tooltip" --arg class "$classes" \
'{text:$text, tooltip:$tooltip, class:$class}'
|
