From 3d1763056904e437471b7acb2b61c1c71e01b4c0 Mon Sep 17 00:00:00 2001
From: patrick <pschoeps@localhost.localdomain>
Date: Mon, 4 Nov 2013 23:14:21 +0100
Subject: [PATCH] aufgabe3-ordner

---
 aufgabe3/deleteuser |  9 +++++++++
 aufgabe3/newuser    | 48 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100755 aufgabe3/deleteuser
 create mode 100755 aufgabe3/newuser

diff --git a/aufgabe3/deleteuser b/aufgabe3/deleteuser
new file mode 100755
index 0000000..ecd74e1
--- /dev/null
+++ b/aufgabe3/deleteuser
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+# check for arguments
+if [[ $# -ne 1 || -z "$1" ]]; then
+        echo "USAGE: $0 username" 1>&2
+        exit 1
+fi
+
+userdel -r "$1"
diff --git a/aufgabe3/newuser b/aufgabe3/newuser
new file mode 100755
index 0000000..fe45a62
--- /dev/null
+++ b/aufgabe3/newuser
@@ -0,0 +1,48 @@
+#!/bin/bash
+set -e
+
+# check for root
+if [[ $EUID -ne 0 ]]; then
+  echo "This script must be run as root" 1>&2
+  exit 1
+fi
+
+# check for arguments
+if [[ $# -ne 1 ]]; then
+  echo "USAGE: $0 username" 1>&2
+  exit 1
+fi
+
+# check if user already exists
+if ! id "$1" &> /dev/null; then
+  echo "Adding user..."
+  useradd --base-dir /home --create-home "$1"
+fi
+
+# check if SSH key for user already exists
+if [[ ! -f "/home/$1/.ssh/id_ecdsa" ]]; then
+  echo "Generating SSH key for user..."
+  sudo --user "$1" ssh-keygen -t ecdsa -N "" -b 521 -f "/home/$1/.ssh/id_ecdsa" > /dev/null
+fi
+
+# check if SSH key is already added to list of authorized keys
+sudo -u "$1" touch /home/$1/.ssh/authorized_keys
+if ! grep -q "`cat /home/$1/.ssh/id_ecdsa.pub`" /home/$1/.ssh/authorized_keys; then
+  echo "Adding SSH key to list of authorized keys for user..."
+  cat "/home/$1/.ssh/id_ecdsa.pub" | sudo --user "$1" tee "/home/$1/.ssh/authorized_keys" > /dev/null
+fi
+
+export DIR="`mktemp -d`"
+trap "cd /; rm -rf $DIR" EXIT
+cd "$DIR"
+export GIT_AUTHOR_NAME=$SUDO_USER
+git clone "git@zotac0:gitolite-admin" "$DIR" > /dev/null
+
+# check if SSH key is already registered with git
+if [[ ! -f "$DIR/keydir/$1@$HOSTNAME.pub" ]]; then
+  echo "Adding SSH key to git..."
+  cp "/home/$1/.ssh/id_ecdsa.pub" "$DIR/keydir/$1@$HOSTNAME.pub"
+  git add "$DIR/keydir/$1@$HOSTNAME.pub"
+  git commit --all --message="User \"$1\" added" > /dev/null
+  git push > /dev/null
+fi