From d7e642e93581cc6ed17a0d63c33569ef3bb61cf1 Mon Sep 17 00:00:00 2001
From: Jason Hobbs <telnetdoogie@gmail.com>
Date: Sat, 3 Jul 2021 00:34:52 -0500
Subject: [PATCH] add support for multiple keys to be added; plus dropbear
 conversion (#192)

* add support for multiple keys to be added; converts private key to dropbear for unifi scp use

* change ssh id filename for dropbear default

using .ssh/id_dropbear is dropbear's default id file so no need to use
`ssh -i /root/id_rsa`
any more.

Former-commit-id: 8043e6ae6ae78ecf2b956e99eef2ebebd1836f4e
---
 .../on_boot.d/15-add-root-ssh-key.sh          | 31 ++++++++++++++++---
 1 file changed, 26 insertions(+), 5 deletions(-)

diff --git a/on-boot-script/examples/udm-files/on_boot.d/15-add-root-ssh-key.sh b/on-boot-script/examples/udm-files/on_boot.d/15-add-root-ssh-key.sh
index eb780cf..1f4173a 100644
--- a/on-boot-script/examples/udm-files/on_boot.d/15-add-root-ssh-key.sh
+++ b/on-boot-script/examples/udm-files/on_boot.d/15-add-root-ssh-key.sh
@@ -1,10 +1,31 @@
 #!/bin/sh
 
-MY_SSH_KEY="ADD PUBLIC SSH KEY HERE"
+#####################################################
+# ADD RSA KEYS AS BELOW - CHANGE BEFORE RUNNING     #
+#####################################################
+# set -- "ssh-rsa first key here all keys quoted" \ #
+#        "ssh-rsa each line appended with slash " \ #
+# 	 "ssh-rsa last one has no backslash"        #
+#####################################################
+set -- "ssh-rsa AAAABUNCHOFCHARACTERSANDSTUFF me on MyMachine" \
+       "ssh-rsa AAAADIFFERENTKEYWITHCHARSETC! user@myhost"
+
 KEYS_FILE="/root/.ssh/authorized_keys"
 
-# Places public key in ~/.ssh/authorized_keys if not present
-if ! grep -Fxq "$MY_SSH_KEY" "$KEYS_FILE"; then
-    echo "$MY_SSH_KEY" >> "$KEYS_FILE"
-fi
+counter=0
+for key in "$@"
+do
+	## Places public key in ~/.ssh/authorized_keys if not present
+	if ! grep -Fxq "$key" "$KEYS_FILE"; then
+		let counter++
+		echo "$key" >> "$KEYS_FILE"
+	fi
+done
 
+echo $counter keys added to $KEYS_FILE
+
+echo Converting SSH private key to dropbear format 
+#convert ssh key to dropbear for shell interaction
+dropbearconvert openssh dropbear /mnt/data/ssh/id_rsa /root/.ssh/id_dropbear
+
+exit 0;