[PATCH 2/6] auth-pam.c (sshpam_tty_conv): Check fgets() return code

["Dmitry V. Levin" <ldv@altlinux.org>]

---
 openssh/auth-pam.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

--- a/openssh/auth-pam.c
+++ b/openssh/auth-pam.c
@@ -985,7 +985,8 @@ sshpam_tty_conv(int n, sshpam_const struct pam_message 
**msg,
                        break;
                case PAM_PROMPT_ECHO_ON:
                        fprintf(stderr, "%s\n", PAM_MSG_MEMBER(msg, i, msg));
-                       fgets(input, sizeof input, stdin);
+                       if (fgets(input, sizeof input, stdin) == NULL)
+                               input[0] = '\0';
                        if ((reply[i].resp = strdup(input)) == NULL)
                                goto fail;
                        reply[i].resp_retcode = PAM_SUCCESS;

-- 
ldv

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