From 354dd1646832af1ba64bcd0c09a35828a196921d Mon Sep 17 00:00:00 2001
From: Dash <4506276-Daash@users.noreply.gitlab.com>
Date: Tue, 8 Mar 2022 20:09:56 -0500
Subject: [PATCH] Re-enable terminal echo after fingerprint auth

---
 pam/pam_fprintd.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pam/pam_fprintd.c b/pam/pam_fprintd.c
index 5ddfe34..116d026 100644
--- a/pam/pam_fprintd.c
+++ b/pam/pam_fprintd.c
@@ -38,6 +38,7 @@
 #include <signal.h>
 #include <sys/signalfd.h>
 #include <poll.h>
+#include <termios.h>
 
 #define PAM_SM_AUTH
 #include <security/pam_modules.h>
@@ -788,6 +789,12 @@ do_auth (pam_handle_t *pamh, const char *username)
       int ret = do_verify(bus, data);
       pthread_cancel (pw_prompt_thread);
 
+      /* Authenticating with fingerprint doesn't re-enable echo, so we have to */
+      struct termios term;
+      tcgetattr(fileno(stdin), &term);
+      term.c_lflag |= ECHO;
+      tcsetattr(fileno(stdin), 0, &term);
+
       /* Simply disconnect from bus if we return PAM_SUCCESS */
       if (ret != PAM_SUCCESS)
         release_device (pamh, bus, data->dev);