bthandler/bt

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#!/bin/sh
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#load config
CONFIG="${XDG_CONFIG_HOME:-$HOME/.config}/bt/config"
#shellcheck disable=SC1090
. "$CONFIG"
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"$AUTOTRUST" || actions="$(printf '%s\ntrust\n' "$actions")"
power(){
powerstatus="$( bluetoothctl show | grep Powered | awk '{print $2}' )"
if [ "$powerstatus" = "no" ]; then
[ "$1" = on ] && bluetoothctl power on
elif [ "$powerstatus" = "yes" ]; then
[ "$1" = off ] && bluetoothctl power off
fi
}
scan(){
scanstatus="$( bluetoothctl show | grep Discovering | awk '{print $2}' )"
if [ "$1" = on ]; then
#sets variable in case scanning was no already on before the start of bt
[ -f /tmp/bt_start_scan$$ ] || start_scan="$( date +'%s' )"
if [ "$scanstatus" = "no" ]; then
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bluetoothctl scan on &
start_scan="$( date +'%s' )"
fi
echo "$start_scan" > /tmp/bt_start_scan$$
elif [ "$1" = off ]; then
if [ "$scanstatus" = "yes" ]; then
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bluetoothctl scan off
fi
fi
}
#Check bluetoothctl paired-devices for new devices to be hardcoded into pair list
update_pair_list(){
btctl_paired_devices="$(bluetoothctl paired-devices)"
if [ -n "$btctl_paired_devices" ]
then
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#needs temp var as it writes into the same file as it reads from
btctl_not_in_list="$( echo "$btctl_paired_devices" | grep -vf "$PAIRLIST")"
[ -n "$btctl_not_in_list" ] && echo "$btctl_not_in_list" >> "$PAIRLIST"
fi
}
#start scanning as early as possible to speed up pairing process
startup(){
if $AUTOSCAN
then
power on
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scan on
fi
}
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if [ "$1" = "edit" ]; then
case $2 in
"config")${EDITOR:-vim} "$CONFIG";;
"paired")${EDITOR:-vim} "$PAIRLIST";;
"alias")${EDITOR:-vim} "$ALIASLIST";;
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"blacklist")${EDITOR:-vim} "$BLACKLIST";;
*)echo "options: config/paired/alias/blacklist" && exit 1;;
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esac
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exit
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fi
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startup &
update_pair_list &
# shellcheck disable=SC1091
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connected_ids="$(bluetoothctl devices | awk '{print "bluetoothctl info "$2}' | . /dev/stdin | grep -E '(^Device |Connected:)' | sed -e 'N;s/\n/;/' | grep 'Connected: yes' | cut -d' ' -f2,5)"
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de_alias(){
while read -r id; do
if grep -q "$id" "$ALIASLIST"; then
grep "$id" "$ALIASLIST" | cut -d' ' --complement -f1
else
grep "$id" "$PAIRLIST" | cut -d' ' --complement -f1,2
fi
done
}
[ -z "$connected_ids" ] ||
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connected_devices="$( echo "$connected_ids" | de_alias )"
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# shellcheck disable=SC2154
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"$include_disconnect_option" &&
[ -n "$connected_devices" ] &&
actions="$(printf "disconnect\n%s" "$actions")"
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#Compile list of all device ids of paired devices (from bluetoothctl and from hardcoded list)
connected_ids="$( ( bluetoothctl paired-devices && cat "$PAIRLIST" ) | sort -u | cut -d' ' -f2)"
paired_devices="$( echo "$connected_ids" | de_alias )"
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echo "paired_devices:"
echo "$paired_devices"
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disp_devices="$( echo "$paired_devices" | grep -vf "$BLACKLIST" )"
#show which devices are connected in menu
disp_devices_with_links="$(echo "$paired_devices" | while read -r device; do
printf '%s' "$device"
if [ -n "$connected_devices" ] &&
echo "$device" | grep -q "$connected_devices"
then
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printf '🔗'
fi
printf '\n'
done
)"
#detects current power mode of controller and adjusts options accordingly
powerstatus="$( bluetoothctl show | grep Powered | awk '{print $2}' )"
poweroption="$( echo "$powerstatus" | sed 's/yes/power off/; s/no/power on/' )"
#Don't print empty device list, removes unnecessary empty choice in dmenu
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if [ "$disp_devices" = "" ];then
choice=$( printf "%s\n%s" "$actions" "$poweroption" |
dmenu -i -p 'What BT action would you like to perform:')
else
choice=$( ( echo "$disp_devices_with_links" && printf "%s\n%s" "$actions" "$poweroption" ) |
dmenu -i -p 'What BT action would you like to perform:' | sed 's/🔗$//')
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fi
cleanup(){
scan off
rm -f /tmp/bt_start_scan*
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pkill -RTMIN+$barsignal $bar
exit 0
}
pair(){
#since this function can get called indefinitely, make sure to always be scanning and controller has power in the case that it got deactived by some other process.
power on
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scan on > /dev/null
#check whether $SCAN_PERIOD seconds has already passed since starting scanning, if not, wait for the rest of that time.
start_scan="$(cat /tmp/bt_start_scan$$)"
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if [ $(( $(date +'%s') - start_scan )) -lt "$SCAN_PERIOD" ]; then
sleep_period="$(( SCAN_PERIOD - $( date +'%s') + start_scan ))"
[ "$sleep_period" -gt 1 ] && plural="s"
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notify-send "bt" "Searching for devices, please wait $sleep_period second$plural"
sleep "$sleep_period"
fi
all_devices="$( bluetoothctl devices )"
if [ "$paired_devices" = "" ]; then
new_devices="$( echo "$all_devices" | awk '{for (i=3; i<NF; i++) printf $i " "; print $NF}' )"
bt_IDS="$( echo "$all_devices" | awk '{print $2}' )"
else
#echo "$paired_devices" > /tmp/paired_devices$$
filtered_devices="$( echo "$all_devices" | grep -v "$paired_devices")"
bt_IDS="$( echo "$filtered_devices" | awk '{print $2}' )"
new_devices="$( echo "$filtered_devices" | awk '{for (i=3; i<NF; i++) printf $i " "; print $NF}' )"
#rm /tmp/paired_devices$$
fi
[ "$new_devices" = "" ] && options="rescan" || options=$(echo "$new_devices" && echo 'rescan')
choice=$( echo "$options" | dmenu -l 10 -i -p 'pair with which device?' )
if [ -n "$choice" ]; then
if [ "$choice" = "rescan" ]; then
start_scan="$( date +'%s')"
echo "$start_scan" > /tmp/bt_start_scan$$
pair
else
dev_no=$( echo "$new_devices" | nl | grep "$choice" | awk '{print $1}')
dev_id=$( echo "$bt_IDS" | nl | grep -P "^.*$dev_no\t" | awk '{print $2}' )
#only attempt to connect if pairing succeeds
bluetoothctl pair "$dev_id" && ( pair_succesful=true && bluetoothctl connect "$dev_id" ) || pair_succesful=false
if $AUTOTRUST; then
bluetoothctl trust "$dev_id"
fi
#if device is not already hard coded as paired, add to paired devices list
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if $pair_succesful && [ "$( grep "$dev_id" "$PAIRLIST")" = "" ] || [ "$(wc -l < "$PAIRLIST")" -eq 0 ]
then
echo to be added to "$PAIRLIST":
echo Device "$dev_id" "$choice"
echo Device "$dev_id" "$choice" >> "$PAIRLIST"
fi
fi
fi
}
case $choice in
"power on") bluetoothctl power on;;
"power off") bluetoothctl power off;;
"scan on") bluetoothctl power on && echo power on && sleep 2
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([ -n "$TERMINAL" ] && $TERMINAL -e bluetoothctl scan on ) || st bluetoothctl scan on > /dev/null;;
"pair") pair;;
"unpair") choice=$( echo "$paired_devices" | dmenu -l 10 -i -p 'remove which paired device?')
if [ -n "$choice" ]; then
dev_no=$( echo "$paired_devices" | nl | grep -P "[0-9]+\t$choice$" | awk '{print $1}')
dev_id=$( echo "$bt_IDS" | nl | grep -P "^.*$dev_no\t" | awk '{print $2}' )
bluetoothctl remove "$dev_id"
#remove device to unpair from hard coded paired devices list
new_paired_list="$( grep -v "$dev_id" "$PAIRLIST" )"
if [ "$new_paired_list" != "" ]
then
echo "$new_paired_list" > "$PAIRLIST"
else
rm -rf "$PAIRLIST"
touch "$PAIRLIST"
fi
fi;;
"trust")
#search through all devices which are connected and only list those as options
# shellcheck disable=SC1091
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untrusted_device_ids="$( awk '{print "bluetoothctl info "$2}' "$PAIRLIST" | . /dev/stdin | grep -E '(Device |Trusted:)' | sed -e 'N;s/\n/;/;s/^.?*Alias: //' | grep "Trusted: no" | cut -d' ' -f2 )"
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untrusted_devices="$( echo "$untrusted_device_ids" | de_alias )"
if [ "$( echo "$untrusted_devices" | wc -l )" -gt 0 ]
then
choice=$( echo "$untrusted_devices" | dmenu -l 10 -i -p 'trust which paired device?')
else
notify-send "bt" "No paired devices that are not trusted already."
fi
if [ -n "$choice" ]; then
dev_no=$( echo "$paired_devices" | nl | grep -P "[0-9]+\t$choice$" | awk '{print $1}')
dev_id=$( echo "$bt_IDS" | nl | grep -P "^.*$dev_no\t" | awk '{print $2}' )
bluetoothctl trust "$dev_id"
fi;;
"disconnect")
#search through all devices and check which are connected
#only list those connceted devices as options
# shellcheck disable=SC1091
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connected_ids="$(bluetoothctl devices | awk '{print "bluetoothctl info "$2}' | . /dev/stdin | grep -E '(^Device |Connected:)' | sed -e 'N;s/\n/;/' | grep 'Connected: yes' | cut -d' ' -f2,5)"
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connected_devices="$( echo "$connected_ids" | de_alias )"
#only open dmenu prompt if there is more than one connected device
if [ "$( echo "$connected_devices" | wc -l )" -gt 1 ]
then
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choice=$( echo "$connected_devices" | dmenu -l 10 -i -p 'disconnect which paired device?')
else
choice="$connected_devices"
fi
#only there was a choice (instead of canceling the dmenu)
if [ -n "$choice" ]; then
dev_no=$( echo "$paired_devices" | nl | grep -P "[0-9]+\t$choice$" | awk '{print $1}')
dev_id=$( echo "$bt_IDS" | nl | grep -P "^.*$dev_no\t" | awk '{print $2}' )
bluetoothctl disconnect "$dev_id"
fi;;
"blacklist")
choice=$( echo "$paired_devices" | dmenu -l 10 -i -p 'blacklist which paired device from selection?')
if [ -n "$choice" ]; then
echo "$choice" >> "$BLACKLIST"
fi;;
*)
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echo "choice: $choice"
dev_no=$( echo "$paired_devices" | nl | grep -P "[0-9]+\t$choice$" | awk '{print $1}')
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[ "$dev_no" != "" ] && dev_id=$( echo "$connected_ids" | nl | grep -P "^.*$dev_no\t" | awk '{print $2}')
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echo "dev_id: $dev_id"
if [ -n "$dev_id" ]; then
power on
if bluetoothctl info "$dev_id" | grep -q "Connected: yes"
then
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echo Was connceted... disconnecting
bluetoothctl disconnect "$dev_id"
else
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if ! bluetoothctl paired-devices | grep -q "$dev_id"; then
echo "not in paired-devices list, re-adding (device needs to be in pairing mode for this)"
notify-send "bt" "device not in paired-devices list, re-pairing"
all_devices="$(bluetoothctl devices | cut -d' ' -f2)"
if ! echo "$dev_id" | grep -q "$all_devices"; then
scan on
start_scan="$(cat /tmp/bt_start_scan$$)"
echo "Scan on"
notify-send "bt" "Scanning for new devices until wanted device has been found"
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until echo "$dev_id" | grep -q "$all_devices"; do
sleep 1
all_devices="$(bluetoothctl devices | cut -d' ' -f2)"
time_scanned="$(( $(date +'%s') - start_scan ))"
[ "$time_scanned" -gt 30 ] && exit 1
done
fi
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echo Attempting to pair...
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bluetoothctl pair "$dev_id"
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scan off
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fi
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echo connecting...
bluetoothctl connect "$dev_id"
fi
fi;;
esac
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cleanup