From af0c6f201ff83eab26e5f48736a82f4838bc82c6 Mon Sep 17 00:00:00 2001
From: Stefanie Eckner <stefanie@eckner.net>
Date: Sat, 30 Dec 2023 16:25:15 +0100
Subject: Client vllt. auch fertig

---
 computer-time-limit | 98 +++++++++++++++++++++++------------------------------
 1 file changed, 43 insertions(+), 55 deletions(-)

diff --git a/computer-time-limit b/computer-time-limit
index 632f5ec..ca429fb 100755
--- a/computer-time-limit
+++ b/computer-time-limit
@@ -18,93 +18,81 @@ if [ -d "${dir}"'/.git' ] && [ $# -eq 0 ] && [ "$(stat -c%U "${dir}"'/.git')" =
   fi
 fi
 
-curl -X POST --data "key=$(
-  {
-    gpg --list-secret-keys --with-colons \
-    | awk -F: '$1 == "sec" {print $5 " " $7}'
-    printf 'SCHNIPP '
-    date '+%s'
-  } \
-  | sort -k2nr,2 \
-  | sed '/^SCHNIPP /,$ d' \
-  | cut -d' ' -f1 \
-  | xargs -r gpg -a --export \
-  | base64 -w0
-)" "${url}"
+unset key_file
 
-time_file=~/.computer-time-limit
-time_per_day=$((60*60/2))
-max_time=$((4*60*60))
-start_time=$(date +%s)
+for dir in ~/.local/keys $(mount | cut -d' ' -f3)/keys ''; do
+  [ -d "${dir}" ] || continue
+  key_file=$(
+    find "${dir}" -mindepth 1 -maxdepth 1 -type f -name '*.sec' \
+    | head -n1
+  )
+  [ -f "${key_file}" ] && break
+done
+
+sende_msg() {
+  curl \
+    -s \
+    -X POST \
+    --data "msg=$1" \
+    --data "sig=$(
+      echo "$1" \
+      | signify -S -s "${key_file}" -m /dev/stdin -x /dev/stdout \
+      | base64 -w0
+    )" \
+    'https://eckner.net/computer-time-limit.php'
+}
 
-save_left_time() {
-  now=$(date +%s)
-  time_left=$((initial_time_left - now + start_time))
-  if [ "${time_left}" -lt 0 ]; then
-    time_left=0
+wie_lange_noch() {
+  if [ -f "${key_file}" ]; then
+    erg=$(
+      sende_msg start | tee /dev/stderr
+    )
+    if [ -n "${erg}" ] && ! echo "${erg}" | grep -qvx '[0-9]\+'; then
+      noch="${erg}"
+    fi
+  else
+    noch=0
   fi
-  printf '%s\n' "${time_left}" > "${time_file}"
 }
 
 still_logged_in() {
   if users | grep -qwF "$(whoami)"; then
+    wie_lange_noch
     return 0
   fi
+  sende_msg stop
   return 1
 }
 
-if [ ! -f "${time_file}" ]; then
-  initial_time_left="${time_per_day}"
-  save_left_time
-else
-  initial_time_left=$(cat "${time_file}")
-fi
-
-day_number() {
-  echo "$(($1 / 60 / 60 / 24))"
-}
-
 check_time() {
-  last_day_number=$(day_number "$(stat -c%Y "${time_file}")")
-  current_day_number=$(day_number "$(date +%s)")
-  if [ "${last_day_number}" -lt "${current_day_number}" ]; then
-    touch "${time_file}"
-    now=$(date +%s)
-    time_left=$((initial_time_left - now + start_time + time_per_day * (current_day_number - last_day_number)))
-    if [ "${time_left}" -gt "${max_time}" ]; then
-      time_left="${max_time}"
-    fi
-    initial_time_left="${time_left}"
-    safe_left_time
-  fi
-  if [ "${time_left}" -le 0 ]; then
-    loginctl session-status | sed -n 's/ .*$//;1p' | xargs -r loginctl terminate-session
+  if [ "${noch}" -le 0 ]; then
+    loginctl session-status | sed -n 's/ .*$//;1p' | xargs -r echo loginctl terminate-session
   fi
-  if [ "${time_left}" -lt 3600 ] && [ "${time_left}" -gt 3540 ]; then
+  if [ "${noch}" -lt 3600 ] && [ "${noch}" -gt 3540 ]; then
     espeak-ng -vde -w /tmp/stunde.wav 'noch eine Stunde'
     xmessage -nearmouse 'Noch 1 Stunde' &
     play /tmp/stunde.wav
     sleep 1m
   fi
-  if [ "${time_left}" -lt 1800 ] && [ "${time_left}" -gt 1740 ]; then
+  if [ "${noch}" -lt 1800 ] && [ "${noch}" -gt 1740 ]; then
     espeak-ng -vde -w /tmp/halbe_stunde.wav 'noch eine halbe Stunde'
     xmessage -nearmouse 'Noch 1/2 Stunde' &
     play /tmp/halbe_stunde.wav
     sleep 1m
   fi
-  if [ "${time_left}" -lt 600 ] && [ "${time_left}" -gt 540 ]; then
+  if [ "${noch}" -lt 600 ] && [ "${noch}" -gt 540 ]; then
     espeak-ng -vde -w /tmp/zehn.wav 'noch zehn Minuten'
     xmessage -nearmouse 'Noch 10 Minuten' &
     play /tmp/zehn.wav
     sleep 1m
   fi
-  if [ "${time_left}" -lt 300 ] && [ "${time_left}" -gt 240 ]; then
+  if [ "${noch}" -lt 300 ] && [ "${noch}" -gt 240 ]; then
     espeak-ng -vde -w /tmp/fuenf.wav 'noch fünf Minuten'
     xmessage -nearmouse 'Noch 5 Minuten' &
     play /tmp/fuenf.wav
     sleep 1m
   fi
-  if [ "${time_left}" -lt 60 ] && [ "${time_left}" -gt 30 ]; then
+  if [ "${noch}" -lt 60 ] && [ "${noch}" -gt 30 ]; then
     espeak-ng -vde -w /tmp/eins.wav 'noch eine Minute'
     xmessage -nearmouse 'Noch 1 Minute' &
     play /tmp/eins.wav
@@ -112,10 +100,10 @@ check_time() {
   fi
 }
 
-trap 'save_left_time' EXIT
+trap 'sende_msg stop' EXIT
+noch=0
 
 while still_logged_in; do
   sleep 1
   check_time
-  save_left_time
 done
-- 
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