install: bluetooth: Add dev script

install/bluetooth/setup-bluetooth-console.sh

@@ -0,0 +1,98 @@
+#!/usr/bin/env bash
+# Set up a Bluetooth serial (RFCOMM/SPP) login console on the BlueOS host.
+#
+# Pairs over Bluetooth (just works, no PIN) and hands each connection a login
+# prompt on the host. Run once on the machine host (not inside docker):
+#   sudo bash setup-bluetooth-console.sh
+# or:
+#   curl -fsSL https://raw.githubusercontent.com/bluerobotics/BlueOS/master/install/bluetooth/setup-bluetooth-console.sh | sudo bash
+set -e
+
+[[ $EUID != 0 ]] && echo "Run as root." && exit 1
+
+echo "Installing bluez-tools (bt-agent)"
+apt-get install -y --no-install-recommends bluez-tools
+
+echo "Enabling bluetoothd --compat (needed for sdptool SPP)"
+BTD=$(command -v bluetoothd || echo /usr/libexec/bluetooth/bluetoothd)
+mkdir -p /etc/systemd/system/bluetooth.service.d
+printf '[Service]\nExecStart=\nExecStart=%s --compat\n' "$BTD" \
+  > /etc/systemd/system/bluetooth.service.d/compat.conf
+
+echo "Installing console launcher"
+cat > /usr/bin/blueos-bluetooth-console.sh <<'EOF'
+#!/usr/bin/env bash
+set -e
+ADAPTER=hci0
+CHANNEL=1
+/usr/sbin/rfkill unblock bluetooth || true
+bluetoothctl -- power on || true
+bluetoothctl -- system-alias 'BlueOS-BT' || true
+bluetoothctl -- pairable on || true
+bluetoothctl -- discoverable-timeout 0 || true
+bluetoothctl -- discoverable on || true
+# persistent just-works pairing agent (auto-accepts, no PIN)
+/usr/bin/bt-agent --capability=NoInputNoOutput &
+# register Serial Port Profile SDP record (needs bluetoothd --compat)
+sdptool add --channel=$CHANNEL SP || true
+# setsid: give agetty its own session so it can acquire rfcomm0 as controlling tty
+# (without it: "cannot get controlling tty", which breaks the line in weird ways)
+# TERM=dumb: over Bluetooth's latency a smart TERM makes bash emit cursor-position
+# queries (ESC[6n); the client auto-replies too late and bash runs the reply as a
+# command, looping forever. dumb makes readline emit no terminal queries at all.
+exec /usr/bin/rfcomm watch "$ADAPTER" "$CHANNEL" /usr/bin/setsid /sbin/agetty --autologin pi --noissue --noclear -L rfcomm0 115200 dumb
+EOF
+chmod +x /usr/bin/blueos-bluetooth-console.sh
+
+echo "Installing rfcomm shell profile (disable bracketed paste)"
+# Bash's bracketed-paste sends a cursor-position query (ESC[6n) each prompt; over
+# Bluetooth latency the reply lands too late and bash runs it as a command, looping.
+# Disable it only for rfcomm ttys (SSH/console are unaffected).
+cat > /etc/profile.d/blueos-bluetooth-console.sh <<'EOF'
+case "$(tty 2>/dev/null)" in
+  /dev/rfcomm*) bind 'set enable-bracketed-paste off' 2>/dev/null ;;
+esac
+EOF
+
+echo "Installing systemd service"
+cat > /etc/systemd/system/blueos-bluetooth-console.service <<'EOF'
+[Unit]
+Description=BlueOS Bluetooth serial console
+After=bluetooth.service
+Requires=bluetooth.service
+
+[Service]
+ExecStart=/usr/bin/blueos-bluetooth-console.sh
+Restart=on-failure
+# bt-agent ignores SIGTERM; don't wait the default 90s on stop/restart
+TimeoutStopSec=5
+KillMode=mixed
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+echo "Reloading systemd"
+systemctl daemon-reload
+
+# Only restart bluetooth when it is not already in --compat mode. On boards where
+# Wi-Fi and Bluetooth share one chip (e.g. Raspberry Pi), restarting the BT stack
+# can briefly drop Wi-Fi, so we avoid it on re-runs (the compat drop-in is already live).
+if ! pgrep -f 'bluetoothd.*--compat' >/dev/null; then
+  echo "Restarting bluetooth to apply --compat (may briefly drop Wi-Fi on combo-chip boards)"
+  systemctl restart bluetooth
+  sleep 1
+fi
+
+echo "Enabling + (re)starting blueos-bluetooth-console"
+systemctl enable blueos-bluetooth-console
+systemctl restart blueos-bluetooth-console
+
+echo "Done."
+
+# Connect from an Arch Linux client (BlueOS advertises as BlueOS-BT):
+#   MAC=$(bluetoothctl devices | grep BlueOS-BT | awk '{print $2}')   # scan/pair first if empty
+#   bluetoothctl pair "$MAC" && bluetoothctl trust "$MAC"
+#   sudo rfcomm bind 0 "$MAC" 1                                        # persistent /dev/rfcomm0
+#   sudo scrren /dev/rfcomm0 115200
+