From 495785d561070d4bab7d21c22551cccb6587f53d Mon Sep 17 00:00:00 2001
From: Thomas L <tom@dl6tom.de>
Date: Sun, 30 Dec 2018 01:14:23 +0100
Subject: [PATCH] Initial commit

---
 LICENSE      | 13 +++++++++++++
 Makefile     | 10 ++++++++++
 login_-sober | 29 +++++++++++++++++++++++++++++
 3 files changed, 52 insertions(+)
 create mode 100644 LICENSE
 create mode 100644 Makefile
 create mode 100755 login_-sober

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a2407c8
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,13 @@
+Copyright (c) 2018, Thomas L <tom@dl6tom.de>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..24af096
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,10 @@
+.PHONY: all install
+
+PREFIX		?= /usr
+LIBEXECDIR	?= ${PREFIX}/libexec
+
+all:
+
+install:
+	install -o root -g wheel -m 750 -d "$(DESTDIR)$(LIBEXECDIR)/auth"
+	install -o root -g auth -m 555 login_-sober "$(DESTDIR)$(LIBEXECDIR)/auth/login_-sober"
diff --git a/login_-sober b/login_-sober
new file mode 100755
index 0000000..ac92854
--- /dev/null
+++ b/login_-sober
@@ -0,0 +1,29 @@
+#!/bin/ksh
+
+while getopts 'v:s:' opt; do
+    case "$opt" in
+        v)
+            ;;
+        s)
+            if [ 'login' != "$OPTARG" ]; then
+                exit 1
+            fi
+            ;;
+        *)
+            exit 1
+            ;;
+    esac
+done
+
+test_sentence="Please, type _exactly_ this sentence as fast as you can."
+temp_file=$(mktemp)
+echo "$test_sentence"
+{ time -p read user_sentence; } 2> "$temp_file"
+user_time=$(sed -ne 's/real *\([^.]*\).*/\1/p' < "$temp_file")
+rm -f "$temp_file"
+
+if [ "$test_sentence" == "$user_sentence" -a "$user_time" -le 15 ]; then
+    exec /usr/libexec/auth/login_passwd "$@"
+fi
+echo "Too slow or inaccurate typing."
+echo reject >&3