From 6802c7ca843e7cb8aad37ab0cb2364a7eb446f83 Mon Sep 17 00:00:00 2001
From: Adrian Amaglio <aamaglio@dbmtechnologies.com>
Date: Wed, 20 Sep 2023 15:21:25 +0200
Subject: [PATCH] update

---
 gw.sh              |   2 +-
 radicale_server.sh |  28 +++++++++++
 redshift.sh        | 115 ++++++++++++++++++++++++++++++++++++++++++---
 3 files changed, 137 insertions(+), 8 deletions(-)
 create mode 100755 radicale_server.sh

diff --git a/gw.sh b/gw.sh
index d68a59a..2dd9821 100755
--- a/gw.sh
+++ b/gw.sh
@@ -31,6 +31,6 @@ run iptables -A INPUT  -i "$local_iface" -j ACCEPT
 run iptables -t nat -A POSTROUTING -o "$net_iface" -j MASQUERADE
 run iptables -A FORWARD -i $net_iface -o $local_iface -m state --state RELATED,ESTABLISHED -j ACCEPT
 run iptables -A FORWARD -i $local_iface -o $net_iface  -j ACCEPT
-run dnsmasq --dhcp-range=192.168.238.100,192.168.238.199,10m -d --server=9.9.9.9
+run dnsmasq --dhcp-range=192.168.238.100,192.168.238.199,10m -d --server=9.9.9.9 --listen-address 192.168.238.254 --interface "$local_iface" -p0
 
 clean
diff --git a/radicale_server.sh b/radicale_server.sh
new file mode 100755
index 0000000..0239dda
--- /dev/null
+++ b/radicale_server.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+set -euo pipefail
+
+echo "vars"
+htpasswd="$(mktemp)"
+venv=~/.cache/radicale-venv
+#locale_ip_addr="$(ip -o -4 a show dev usb0 | grep -Po 'inet[[:space:]]+\K192.168.42.[0-9]{1,3}')"
+locale_ip_addr="192.168.42.58"
+port=5232
+
+if [ ! -d "$venv" ] || [ -z "$(ls -A "$venv")" ] ; then
+	virtualvenv "$venv"
+fi
+
+sudo ip a add "$locale_ip_addr" dev usb0
+
+echo "populating htpasswd. Enter password :"
+htpasswd -c "$htpasswd" dav
+
+echo "venv"
+. venv/bin/activate
+
+echo "runing on $locale_ip_addr:$port"
+python3 -m radicale -H "$locale_ip_addr:$port" --storage-filesystem-folder=~/.contacts --auth-type=htpasswd --auth-htpasswd-encryption md5 --auth-htpasswd-filename "$htpasswd"
+
+echo "Cleaning"
+rm "$htpasswd"
diff --git a/redshift.sh b/redshift.sh
index 9daa57f..ab025ff 100755
--- a/redshift.sh
+++ b/redshift.sh
@@ -1,17 +1,118 @@
 #!/bin/bash
 
-if [ "$#" -ne 1 ] ; then
-	echo "Usage : $0 +/-" >&2
+BRIGHTNESS_INCREMENT=.1
+R_INCREMENT=0
+G_INCREMENT=.1
+B_INCREMENT=.2
+
+xrandr_settings_of_display () {
+	if [ "$#" -ne 1 ] ; then
+		echo "Usage : xrandr_settings_of_display <display_name>" >&2
+		exit 1
+	fi
+
+	out="$(xrandr --verbose | sed -e "1,/^$1/d" | sed '/^ /,$d')"
+
+	if [ -z "$out" ] ; then
+		echo "ERROR, empty output for command: xrandr_settings_of_display $@" >&2
+		exit 1
+	fi
+
+	echo "$out"
+}
+
+
+brigthness_of_display () {
+	if [ "$#" -ne 1 ] ; then
+		echo "Usage : brigthness_of_display <display_name>" >&2
+		exit 1
+	fi
+
+	xrandr_settings_of_display "$1" | grep -Po 'Brightness: \K.*'
+}
+
+
+raw_gamma_of_display () {
+	if [ "$#" -ne 1 ] ; then
+		echo "Usage : raw_gamma_of_display <display_name>" >&2
+		exit 1
+	fi
+
+	xrandr_settings_of_display "$1" | grep -Po 'Gamma: \K.*' | tr ':' ' '
+}
+
+gamma_of_display () {
+	if [ "$#" -ne 1 ] ; then
+		echo "Usage : gamma_of_display <display_name>" >&2
+		exit 1
+	fi
+
+	read r g b <<< "$(raw_gamma_of_display "$1")"
+	echo "$r $g $b -> $(invert $r) $(invert $g) $(invert $b)" >&2
+	echo "$(invert $r) $(invert $g) $(invert $b)"
+}
+
+invert () {
+	if [ "$#" -ne 1 ] ; then
+		echo "Usage : invert <float_number>" >&2
+		exit 1
+	fi
+
+	echo "1/$1" | bc -l | grep -o '.*\...'
+}
+
+
+############### Args
+
+if [ "$#" -ne 2 ] ; then
+	echo "Usage : $0 <brightness|redness> +|-|=" >&2
 	exit 1
 fi
-red='--gamma 1:.6:.6 --brightness 0.6'
-size='--rate 60 --mode 1920x1080 --fb 1920x1080 --panning 1920x1080*'
+
+property="$1"
+action="$2"
+
+if [ ! "$action" = - ] && [ ! "$action" = + ] && [ ! "$action" = '=' ] ; then
+	echo "Bad action '$action'. Expected + - or =."
+	exit 1
+fi
+
+
 i=0
-same=''
 xrandr --listactivemonitors | tail -n +2 | cut -d ' ' -f 6  | while read monitor ; do
-	xrandr --output "$monitor" $red $size $same
+	args=''
 	if [ "$i" -eq 0 ] ; then
 		((i=i+1))
-		same="--same-as $monitor"
+		case "$property" in
+			brightness)
+				if [ "$action" = '=' ] ; then
+					args="--brightness 1"
+				else
+					b="$(brigthness_of_display "$monitor")"
+					b="$( echo "$b $action $BRIGHTNESS_INCREMENT" | bc -l )"
+					args="--brightness $b"
+				fi
+				;;
+			redness)
+				if [ "$action" = '=' ] ; then
+					args="--gamma 1:1:1"
+				else
+					read r g b <<< "$(gamma_of_display "$monitor")"
+
+					rnew="$( echo "$r $action $R_INCREMENT" | bc -l )"
+					gnew="$( echo "$g $action $G_INCREMENT" | bc -l )"
+					bnew="$( echo "$b $action $B_INCREMENT" | bc -l )"
+					args="--gamma $rnew:$gnew:$bnew"
+					#echo "from $r:$g:$b to $rnew:$gnew:$bnew"
+				fi
+				;;
+			*)
+				echo "Invalid property $property"
+				exit 1
+		esac
+	else
+		args="--same-as $monitor"
 	fi
+	xrandr --output "$monitor" $args
+	echo xrandr --output "$monitor" $args
 done