Rewrite to POSIX sh

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appeasementPolitik 2022-09-12 19:46:21 +00:00 committed by GitHub
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#!/usr/bin/env bash #!/bin/sh
# #
# Author: Nick Clyde (clydedroid) # Author: Nick Clyde (clydedroid)
# #
# A script that generates a that uses bluetoothctl with dmenu to # A script that generates a dmenu prompt that uses bluetoothctl to
# connect to bluetooth devices and display status info. # connect to bluetooth devices and display status info.
# #
# Inspired by networkmanager-dmenu (https://github.com/firecat53/networkmanager-dmenu) # Inspired by networkmanager-dmenu (https://github.com/firecat53/networkmanager-dmenu)
@ -10,299 +10,199 @@
# #
# Depends on: # Depends on:
# Arch repositories: dmenu, bluez-utils (contains bluetoothctl) # Arch repositories: dmenu, bluez-utils (contains bluetoothctl)
# This is a modification of rofi-bluetooth script to work with dmenu # This is a modification of rofi-bluetooth script to work with dmenu
# Original script: https://github.com/nickclyde/rofi-bluetooth # Original script: https://github.com/nickclyde/rofi-bluetooth
# Constants # Constants
divider="<🔗-⚒>" divider='<🔗-⚒>'
goback="Back" goback='Back'
# Dmenu command to pipe into, can add any options here
dmenu_command='dmenu -i -p'
# Checks if bluetooth controller is powered on # Checks if bluetooth controller is powered on
power_on() { power_on() {
if bluetoothctl show | grep -q "Powered: yes"; then bluetoothctl show | grep -q 'Powered: yes' && return 0 || return 1
return 0
else
return 1
fi
} }
# Toggles power state # Toggles power state
toggle_power() { toggle_power() {
if power_on; then if power_on; then
bluetoothctl power off bluetoothctl power off
show_menu show_menu
else else
if rfkill list bluetooth | grep -q 'blocked: yes'; then rfkill list bluetooth | grep -q 'blocked: yes' && rfkill unblock bluetooth && sleep 3
rfkill unblock bluetooth && sleep 3
fi bluetoothctl power on
bluetoothctl power on show_menu
show_menu fi
fi
} }
# Checks if controller is scanning for new devices # Checks if controller is scanning for new devices
scan_on() { scan_on() {
if bluetoothctl show | grep -q "Discovering: yes"; then bluetoothctl show | grep -q 'Discovering: yes' &&
echo "Scan: on" echo 'Scan: on' && return 0 ||
return 0 { echo 'Scan: off' && return 1; }
else
echo "Scan: off"
return 1
fi
} }
# Toggles scanning state # Toggles scanning state
toggle_scan() { toggle_scan() {
if scan_on; then scan_on &&
kill $(pgrep -f "bluetoothctl scan on") kill "$(pgrep -f 'bluetoothctl scan on')" && bluetoothctl scan off && show_menu ||
bluetoothctl scan off { bluetoothctl scan on & echo 'Scanning...' && sleep 5 && show_menu; }
show_menu
else
bluetoothctl scan on &
echo "Scanning..."
sleep 5
show_menu
fi
} }
# Checks if controller is able to pair to devices # Checks if controller is able to pair to devices
pairable_on() { pairable_on() {
if bluetoothctl show | grep -q "Pairable: yes"; then bluetoothctl show | grep -q 'Pairable: yes' &&
echo "Pairable: on" echo 'Pairable: on' && return 0 ||
return 0 { echo 'Pairable: off' && return 1; }
else
echo "Pairable: off"
return 1
fi
} }
# Toggles pairable state # Toggles pairable state
toggle_pairable() { toggle_pairable() {
if pairable_on; then pairable_on &&
bluetoothctl pairable off bluetoothctl pairable off && show_menu ||
show_menu { bluetoothctl pairable on && show_menu; }
else
bluetoothctl pairable on
show_menu
fi
} }
# Checks if controller is discoverable by other devices # Checks if controller is discoverable by other devices
discoverable_on() { discoverable_on() {
if bluetoothctl show | grep -q "Discoverable: yes"; then bluetoothctl show | grep -q 'Discoverable: yes' &&
echo "Discoverable: on" echo 'Discoverable: on' && return 0 ||
return 0 { echo 'Discoverable: off' && return 1; }
else
echo "Discoverable: off"
return 1
fi
} }
# Toggles discoverable state # Toggles discoverable state
toggle_discoverable() { toggle_discoverable() {
if discoverable_on; then discoverable_on &&
bluetoothctl discoverable off bluetoothctl discoverable off && show_menu ||
show_menu { bluetoothctl discoverable on && show_menu; }
else
bluetoothctl discoverable on
show_menu
fi
} }
# Checks if a device is connected # Checks if a device is connected
device_connected() { device_connected() {
device_info=$(bluetoothctl info "$1") device_info=$(bluetoothctl info "$1")
if echo "$device_info" | grep -q "Connected: yes"; then
return 0 echo "$device_info" | grep -q 'Connected: yes' && return 0 || return 1
else
return 1
fi
} }
# Toggles device connection # Toggles device connection
toggle_connection() { toggle_connection() {
if device_connected $1; then device_connected "$1" &&
bluetoothctl disconnect $1 bluetoothctl disconnect "$1" && device_menu "$device" ||
device_menu "$device" { bluetoothctl connect "$1" && device_menu "$device"; }
else
bluetoothctl connect $1
device_menu "$device"
fi
} }
# Checks if a device is paired # Checks if a device is paired
device_paired() { device_paired() {
device_info=$(bluetoothctl info "$1") device_info=$(bluetoothctl info "$1")
if echo "$device_info" | grep -q "Paired: yes"; then
echo "Paired: yes" echo "$device_info" | grep -q 'Paired: yes' &&
return 0 echo 'Paired: yes' && return 0 ||
else { echo 'Paired: no' && return 1; }
echo "Paired: no"
return 1
fi
} }
# Toggles device paired state # Toggles device paired state
toggle_paired() { toggle_paired() {
if device_paired $1; then device_paired "$1" &&
bluetoothctl remove $1 bluetoothctl remove "$1" && device_menu "$device" ||
device_menu "$device" { bluetoothctl pair "$1" && device_menu "$device"; }
else
bluetoothctl pair $1
device_menu "$device"
fi
} }
# Checks if a device is trusted # Checks if a device is trusted
device_trusted() { device_trusted() {
device_info=$(bluetoothctl info "$1") device_info=$(bluetoothctl info "$1")
if echo "$device_info" | grep -q "Trusted: yes"; then
echo "Trusted: yes" echo "$device_info" | grep -q 'Trusted: yes' &&
return 0 echo 'Trusted: yes' && return 0 ||
else { echo 'Trusted: no' && return 1; }
echo "Trusted: no"
return 1
fi
} }
# Toggles device connection # Toggles device connection
toggle_trust() { toggle_trust() {
if device_trusted $1; then device_trusted "$1" &&
bluetoothctl untrust $1 bluetoothctl untrust "$1" && device_menu "$device" ||
device_menu "$device" { bluetoothctl trust "$1" && device_menu "$device"; }
else
bluetoothctl trust $1
device_menu "$device"
fi
}
# Prints a short string with the current bluetooth status
# Useful for status bars like polybar, etc.
print_status() {
if power_on; then
printf ''
mapfile -t paired_devices < <(bluetoothctl paired-devices | grep Device | cut -d ' ' -f 2)
counter=0
for device in "${paired_devices[@]}"; do
if device_connected $device; then
device_alias=$(bluetoothctl info $device | grep "Alias" | cut -d ' ' -f 2-)
if [ $counter -gt 0 ]; then
printf ", %s" "$device_alias"
else
printf " %s" "$device_alias"
fi
((counter++))
fi
done
printf "\n"
else
echo ""
fi
} }
# A submenu for a specific device that allows connecting, pairing, and trusting # A submenu for a specific device that allows connecting, pairing, and trusting
device_menu() { device_menu() {
device=$1 device=$1
# Get device name and mac address # Get device name and mac address
device_name=$(echo $device | cut -d ' ' -f 3-) device_name=$(echo "$device" | cut -d ' ' -f 3-)
mac=$(echo $device | cut -d ' ' -f 2) mac=$(echo "$device" | cut -d ' ' -f 2)
# Build options # Build options
if device_connected $mac; then device_connected "$mac" &&
connected="Connected: yes" connected='Connected: yes' ||
else connected='Connected: no'
connected="Connected: no"
fi
paired=$(device_paired $mac)
trusted=$(device_trusted $mac)
options="$connected\n$paired\n$trusted\n$divider\n$goback\nExit"
# Open dmenu, read chosen option paired=$(device_paired "$mac")
chosen="$(echo -e "$options" | $dmenu_command "$device_name")" trusted=$(device_trusted "$mac")
options="${connected}\n${paired}\n${trusted}\n${divider}\n${goback}\nExit"
# Match chosen option to command # Open dmenu, read chosen option
case $chosen in chosen="$(printf '%b' "$options" | $dmenu_command "$device_name")"
"" | $divider)
echo "No option chosen." # Match chosen option to command
;; case $chosen in
$connected) "" | "$divider")
toggle_connection $mac echo 'No option chosen.' ;;
;; "$connected")
$paired) toggle_connection "$mac" ;;
toggle_paired $mac "$paired")
;; toggle_paired "$mac" ;;
$trusted) "$trusted")
toggle_trust $mac toggle_trust "$mac" ;;
;; "$goback")
$goback) show_menu ;;
show_menu esac
;;
esac
} }
# Opens dmenu with current bluetooth status and options to connect # Opens dmenu with current bluetooth status and options to connect
show_menu() { show_menu() {
# Get menu options # Get menu options
if power_on; then if power_on; then
power="Power: on" power='Power: on'
# Human-readable names of devices, one per line # Human-readable names of devices, one per line
# If scan is off, will only list paired devices # If scan is off, will only list paired devices
devices=$(bluetoothctl devices | grep Device | cut -d ' ' -f 3-) devices=$(bluetoothctl devices | cut -d ' ' -f 3-)
# Get controller flags # Get controller flags
scan=$(scan_on) scan=$(scan_on)
pairable=$(pairable_on) pairable=$(pairable_on)
discoverable=$(discoverable_on) discoverable=$(discoverable_on)
# Options passed to dmenu # Options passed to dmenu
options="$devices\n$divider\n$power\n$scan\n$pairable\n$discoverable\nExit" options="${devices}\n${divider}\n${power}\n${scan}\n${pairable}\n${discoverable}\nExit"
else else
power="Power: off" power='Power: off'
options="$power\nExit" options="$power\nExit"
fi fi
# Open dmenu, read chosen option # Open dmenu, read chosen option
chosen="$(echo -e "$options" | $dmenu_command "Bluetooth")" chosen="$(printf '%b' "$options" | $dmenu_command 'Bluetooth')"
# Match chosen option to command # Match chosen option to command
case $chosen in case $chosen in
"" | $divider) "" | "$divider")
echo "No option chosen." echo 'No option chosen.' ;;
;; "$power")
$power) toggle_power ;;
toggle_power "$scan")
;; toggle_scan ;;
$scan) "$discoverable")
toggle_scan toggle_discoverable ;;
;; "$pairable")
$discoverable) toggle_pairable ;;
toggle_discoverable *)
;; device=$(bluetoothctl devices | grep "$chosen")
$pairable) # Open a submenu if a device is selected
toggle_pairable [ -n "$device" ] && device_menu "$device" ;;
;; esac
*)
device=$(bluetoothctl devices | grep "$chosen")
# Open a submenu if a device is selected
if [[ $device ]]; then device_menu "$device"; fi
;;
esac
} }
# Dmenu command to pipe into, can add any options here show_menu
dmenu_command="dmenu -i -p"
case "$1" in
--status)
print_status
;;
*)
show_menu
;;
esac