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30 lines
1.2 KiB
30 lines
1.2 KiB
From 4db34f73d461b973867ddaf18bf690219229cd7a Mon Sep 17 00:00:00 2001
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From: Carlos Santos <casantos@redhat.com>
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Date: Thu, 25 Jul 2024 18:39:59 -0300
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Subject: [PATCH] vncsession: use /bin/sh if the user shell is not set
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An empty shell field in the password file is valid, although not common.
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Use /bin/sh in this case, as documented in the passwd(5) man page, since
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the vncserver script requires a non-empty SHELL environment variable.
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Fixes issue #1786.
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Signed-off-by: Carlos Santos <casantos@redhat.com>
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---
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unix/vncserver/vncsession.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/unix/vncserver/vncsession.c b/unix/vncserver/vncsession.c
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index 1ee096c7c..98a0432aa 100644
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--- a/unix/vncserver/vncsession.c
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+++ b/unix/vncserver/vncsession.c
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@@ -545,7 +545,7 @@ run_script(const char *username, const char *display, char **envp)
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// Set up some basic environment for the script
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setenv("HOME", pwent->pw_dir, 1);
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- setenv("SHELL", pwent->pw_shell, 1);
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+ setenv("SHELL", *pwent->pw_shell != '\0' ? pwent->pw_shell : "/bin/sh", 1);
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setenv("LOGNAME", pwent->pw_name, 1);
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setenv("USER", pwent->pw_name, 1);
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setenv("USERNAME", pwent->pw_name, 1);
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