From 44002f3a4e371d6a6831fe08d7884b0d3badf536 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Mon, 23 May 2022 21:46:31 +0200
Subject: scripts/check-keys: make possible to check all keys

---
 scripts/check-keys | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/scripts/check-keys b/scripts/check-keys
index 6a417fe..360a2c6 100755
--- a/scripts/check-keys
+++ b/scripts/check-keys
@@ -1,5 +1,12 @@
 #!/bin/bash
 
+if [ $# -eq 0 ] && [ $(whoami) = 'root' ]; then
+  getent passwd \
+  | cut -d: -f1 \
+  | parallel "${0}"
+  exit $?
+fi
+
 cd "${0%/*}/.."
 
 if [ $# -gt 1 ]; then
@@ -14,14 +21,13 @@ if [ ! -d "hosts/${host}" ]; then
 fi
 
 user="${1:-$(whoami)}"
-if [ ! -f "hosts/${host}/${user}" ]; then
-  >&2 printf 'no keys for user %s on host %s\n' "${user}" "${host}"
-  exit 1
-fi
-
 home_dir=$(
   getent passwd "${user}" \
   | cut -d: -f6
 )
 
+if [ ! -f "hosts/${host}/${user}" ] && [ ! -f "${home_dir}/.ssh/authorized_keys" ]; then
+  exit 0
+fi
+
 diff -u --color "hosts/${host}/${user}" "${home_dir}/.ssh/authorized_keys"
-- 
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