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-rw-r--r--svr-runopts.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/svr-runopts.c b/svr-runopts.c
index dea4a55..1966f26 100644
--- a/svr-runopts.c
+++ b/svr-runopts.c
@@ -73,6 +73,7 @@ static void printhelp(const char * progname) {
"-g Disable password logins for root\n"
"-B Allow blank password logins\n"
#endif
+ "-T <1 to %d> Maximum authentication tries (default %d)\n"
#if DROPBEAR_SVR_LOCALTCPFWD
"-j Disable local port forwarding\n"
#endif
@@ -107,6 +108,7 @@ static void printhelp(const char * progname) {
#if DROPBEAR_ECDSA
ECDSA_PRIV_FILENAME,
#endif
+ MAX_AUTH_TRIES, DEFAULT_AUTH_TRIES,
DROPBEAR_MAX_PORTS, DROPBEAR_DEFPORT, DROPBEAR_PIDFILE,
DEFAULT_RECV_WINDOW, DEFAULT_KEEPALIVE, DEFAULT_IDLE_TIMEOUT);
}
@@ -119,6 +121,7 @@ void svr_getopts(int argc, char ** argv) {
char* recv_window_arg = NULL;
char* keepalive_arg = NULL;
char* idle_timeout_arg = NULL;
+ char* maxauthtries_arg = NULL;
char* keyfile = NULL;
char c;
@@ -132,6 +135,7 @@ void svr_getopts(int argc, char ** argv) {
svr_opts.noauthpass = 0;
svr_opts.norootpass = 0;
svr_opts.allowblankpass = 0;
+ svr_opts.maxauthtries = DEFAULT_AUTH_TRIES;
svr_opts.inetdmode = 0;
svr_opts.portcount = 0;
svr_opts.hostkey = NULL;
@@ -235,6 +239,9 @@ void svr_getopts(int argc, char ** argv) {
case 'I':
next = &idle_timeout_arg;
break;
+ case 'T':
+ next = &maxauthtries_arg;
+ break;
#if DROPBEAR_SVR_PASSWORD_AUTH || DROPBEAR_SVR_PAM_AUTH
case 's':
svr_opts.noauthpass = 1;
@@ -331,6 +338,16 @@ void svr_getopts(int argc, char ** argv) {
dropbear_exit("Bad recv window '%s'", recv_window_arg);
}
}
+
+ if (maxauthtries_arg) {
+ unsigned int val = 0;
+ if (m_str_to_uint(maxauthtries_arg, &val) == DROPBEAR_FAILURE ||
+ val == 0 || val > MAX_AUTH_TRIES) {
+ dropbear_exit("Bad maxauthtries '%s'", maxauthtries_arg);
+ }
+ svr_opts.maxauthtries = val;
+ }
+
if (keepalive_arg) {
unsigned int val;