dropbear server: support -T max auth tries Add support for '-T n' for a run-time specification for maximum number of authentication attempts where 'n' is between 1 and compile time option MAX_AUTH_TRIES. A default number of tries can be specified at compile time using 'DEFAULT_AUTH_TRIES' which itself defaults to MAX_AUTH_TRIES for backwards compatibility. Signed-off-by: Kevin Darbyshire-Bryant <[email protected]>

--- a/runopts.h	Sat Jun 24 23:32:25 2017 +0800
+++ b/runopts.h	Mon May 29 10:25:09 2017 +0100
@@ -96,6 +96,7 @@
 	int noauthpass;
 	int norootpass;
 	int allowblankpass;
+	unsigned int maxauthtries;
 
 #if DROPBEAR_SVR_REMOTETCPFWD
 	int noremotetcp;