Handle PAM_MAXTRIES from modules.

bz#2249: handle the case where PAM returns PAM_MAXTRIES by ceasing to offer
password and keyboard-interative authentication methods.  Should prevent
"sshd ignoring max retries" warnings in the log.  ok djm@

It probably won't trigger with keyboard-interactive in the default
configuration because the retry counter is stored in module-private
storage which goes away with the sshd PAM process (see bz#688).  On the
other hand, those cases probably won't log a warning either.

1 files changed, 2 insertions, 0 deletions

diff --git a/auth-pam.h b/auth-pam.h
index a1a2b52d..2e9a0c0a 100644
--- a/auth-pam.h
+++ b/auth-pam.h
@@ -45,6 +45,8 @@ void free_pam_environment(char **);
 void sshpam_thread_cleanup(void);
 void sshpam_cleanup(void);
 int sshpam_auth_passwd(Authctxt *, const char *);
+int sshpam_get_maxtries_reached(void);
+void sshpam_set_maxtries_reached(int);
 int is_pam_session_open(void);
 
 #endif /* USE_PAM */