37 lines
1.1 KiB
Diff
37 lines
1.1 KiB
Diff
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From 8ae228fa76ff9ef1d8d6b2199582d9206f1830c6 Mon Sep 17 00:00:00 2001
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From: Stanislav Brabec <sbrabec@suse.cz>
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Date: Mon, 22 Jul 2024 23:18:16 +0200
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Subject: [PATCH] libpam_misc: Use ECHOCTL in the terminal input
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Use the canonical terminal mode (line mode) and set ECHOCTL to prevent
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cursor escape from the login prompt using arrows or escape sequences.
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ICANON is the default in most cases anyway. ECHOCTL is default on tty, but
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for example not on pty, allowing cursor to escape.
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Stanislav Brabec <sbrabec@suse.com>
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---
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libpam_misc/misc_conv.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/libpam_misc/misc_conv.c b/libpam_misc/misc_conv.c
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index 7410e929..6b839b48 100644
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--- a/libpam_misc/misc_conv.c
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+++ b/libpam_misc/misc_conv.c
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@@ -145,9 +145,10 @@ static int read_string(int echo, const char *prompt, char **retstr)
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return -1;
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}
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memcpy(&term_tmp, &term_before, sizeof(term_tmp));
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- if (!echo) {
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+ if (echo)
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+ term_tmp.c_lflag |= ICANON | ECHOCTL;
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+ else
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term_tmp.c_lflag &= ~(ECHO);
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- }
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have_term = 1;
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/*
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--
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2.45.2
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