Add optional ciphers to ssh config.

README.md

@@ -48,6 +48,7 @@ See my [repository of addons][hassio-addons] for more information.
 |`remote_directory`|Yes|The directory to put the backups on the remote server.|
 |`zip_password`|No|If set then the backup will be contained in a password protected zip|
 |`keep_local_backup`|No|Control how many local backups you want to preserve. Default (`""`) is to keep no local backups created from this addon. If `all` then all loocal backups will be preserved. A positive integer will determine how many of the latest backups will be preserved. Note this will delete other local backups created outside this addon.
+|`ssh_ciphers`|No|Optional ciphers to use for `SCP`. e.g. `aes128-cbc,3des-cbc`  This is useful if you need to connect to a machine running an old version of ssh server.|
 
 ## <a name='example'></a>Example: daily backups at 4 AM
 

remote-backup/config.json

@@ -10,6 +10,7 @@
   "hassio_role": "backup",
   "map": ["backup:rw"],
   "options": {
+    "ssh_ciphers": "",
     "ssh_host": "",
     "ssh_port": 22,
     "ssh_user": "",
@@ -19,6 +20,7 @@
     "keep_local_backup": ""
   },
   "schema": {
+    "ssh_ciphers": "str",
     "ssh_host": "str",
     "ssh_port": "int",
     "ssh_user": "str",

remote-backup/run.sh

@@ -4,6 +4,7 @@ set -e
 CONFIG_PATH=/data/options.json
 
 # parse inputs from options
+SSH_CIPHERS=$(jq --raw-output ".ssh_ciphers" $CONFIG_PATH)
 SSH_HOST=$(jq --raw-output ".ssh_host" $CONFIG_PATH)
 SSH_PORT=$(jq --raw-output ".ssh_port" $CONFIG_PATH)
 SSH_USER=$(jq --raw-output ".ssh_user" $CONFIG_PATH)
@@ -25,6 +26,9 @@ function add-ssh-key {
         echo "    User ${SSH_USER}"
         echo "    Port ${SSH_PORT}"
         echo "    StrictHostKeyChecking no"
+        if [ -n "$SSH_CIPHERS" ]; then
+            echo "    Ciphers ${SSH_CIPHER}"
+        fi
     ) > "${HOME}/.ssh/config"
 
     while read -r line; do