make sure to specify HostKeyAlgorithms for ssh and rsync. this is needed because otherwise you can't connect to a server that has ecdsa host key if all you have is an rsa key host key. closes bug #6337

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/leap_cli/ssh_key.rb b/lib/leap_cli/ssh_key.rb
index 3cbeddd..5a7ac23 100644
--- a/lib/leap_cli/ssh_key.rb
+++ b/lib/leap_cli/ssh_key.rb
@@ -107,6 +107,23 @@ module LeapCli
       return keys.map{|k| SshKey.load(k[1], k[0])}
     end
 
+    #
+    # takes a string with one or more ssh keys, one key per line,
+    # and returns a string that specified the ssh key algorithms
+    # that are supported by the keys, in order of preference.
+    #
+    # eg: ecdsa-sha2-nistp256,ssh-rsa,ssh-ed25519
+    #
+    def self.supported_host_key_algorithms(string)
+      if string
+        self.parse_keys(string).map {|key|
+          key.type
+        }.join(',')
+      else
+        ""
+      end
+    end
+
     ##
     ## INSTANCE METHODS
     ##