Files
ubuntu-based-kiosk/provision/files/usr/local/bin/kiosk-mirror-display.sh
T
Claude 037a62e008 Add real first-time provisioning to install.sh (v2.14.0)
Until now ./install.sh only managed an already-installed kiosk;
ubuntu-based-kiosk.sh was still the only path from a bare Ubuntu Server
box to a running one. install.sh now provisions from scratch too:
packages, kiosk user, Node.js/Electron, LightDM+Openbox autologin,
audio/video/HDMI/power-button hardware setup, and the firewall, then
hands off to the already-migrated Core Settings/Advanced menus for
initial configuration instead of reimplementing that logic again.

- lib/provision.sh: the new provisioning flow, built mostly by calling
  existing menus (core_settings_menu, emergency hotspot, virtual
  consoles) - cuts it to ~300 lines against the legacy script's
  ~4,000-line first_time_install().
- lib/electron.sh: electron_install_binary() extracted out of
  menus/advanced_electron.sh so provisioning and the existing "Fix
  blank screen" action share one implementation.
- kiosk-app/ and provision/files/: the Electron app source and every
  system template file, extracted byte-for-byte out of
  ubuntu-based-kiosk.sh's heredocs into real files.
- Found and fixed a bash set -e gotcha along the way: testing a
  multi-statement function as an if-condition (`if ! some_func; then`)
  silently exempts everything inside that function from set -e for the
  duration of the call. Fixed in the new provisioning code and in
  menus/advanced_electron.sh's pre-existing repair action, which had
  the same shape.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VfsFSoRqfbRG7XAg5RoE7e
2026-08-19 05:24:32 +00:00

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#!/bin/bash
# Assumes it's run with DISPLAY/XAUTHORITY already set for the kiosk user's
# X session (either inherited, as from Openbox autostart, or exported by the
# caller). Mirrors every connected non-primary output at the primary's exact
# current resolution so kiosk content isn't cropped/letterboxed/blank on a
# TV/monitor with a different native resolution than the kiosk panel.
QUERY=$(xrandr --query 2>/dev/null)
[ -z "$QUERY" ] && exit 0
PRIMARY_OUTPUT=$(echo "$QUERY" | awk '/ primary/{print $1; exit}')
[ -z "$PRIMARY_OUTPUT" ] && exit 0
PRIMARY_RES=$(echo "$QUERY" | awk -v p="$PRIMARY_OUTPUT" '$1==p{for(i=1;i<=NF;i++) if ($i ~ /^[0-9]+x[0-9]+\+/){split($i,a,"+"); print a[1]; exit}}')
[ -z "$PRIMARY_RES" ] && exit 0
for OUT in $(echo "$QUERY" | awk '/ connected/{print $1}'); do
[ "$OUT" = "$PRIMARY_OUTPUT" ] && continue
HAS_NATIVE=$(echo "$QUERY" | awk -v out="$OUT" -v res="$PRIMARY_RES" '
$0 ~ "^"out" " {infound=1; next}
/^[^ \t]/ {infound=0}
infound && $1==res {print "yes"; exit}
')
if [ "$HAS_NATIVE" = "yes" ]; then
xrandr --output "$OUT" --mode "$PRIMARY_RES" --same-as "$PRIMARY_OUTPUT" 2>/dev/null \
&& logger "KIOSK: mirrored $OUT at native $PRIMARY_RES" \
|| logger "KIOSK: mirror of $OUT at $PRIMARY_RES failed"
continue
fi
# $OUT doesn't natively list the primary's resolution - force a matching mode
CVT_LINE=$(cvt "${PRIMARY_RES%x*}" "${PRIMARY_RES#*x}" 2>/dev/null | grep Modeline)
MODENAME=$(echo "$CVT_LINE" | sed -n 's/^Modeline "\([^"]*\)".*/\1/p')
TIMINGS=$(echo "$CVT_LINE" | sed -n 's/^Modeline "[^"]*" *//p')
if [ -z "$MODENAME" ] || [ -z "$TIMINGS" ]; then
logger "KIOSK: could not generate a $PRIMARY_RES mode for $OUT (cvt failed or missing)"
continue
fi
xrandr --newmode "$MODENAME" $TIMINGS 2>/dev/null
xrandr --addmode "$OUT" "$MODENAME" 2>/dev/null
xrandr --output "$OUT" --mode "$MODENAME" --same-as "$PRIMARY_OUTPUT" 2>/dev/null \
&& logger "KIOSK: mirrored $OUT at forced $PRIMARY_RES ($MODENAME)" \
|| logger "KIOSK: mirror of $OUT at forced $PRIMARY_RES failed"
done