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From b31cff1bc3a298cfa36a10476f2d633c290b6741 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Jan=20=C4=8Cern=C3=BD?= <jcerny@redhat.com>
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Date: Tue, 11 May 2021 13:20:18 +0200
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Subject: [PATCH] Replace getlogin by cuserid
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The getlogin() is used here to fill in the xccdf:identity element which
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shall contain information about the system identity or user employed
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during application of the benchmark. But, the getlogin() can return NULL
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when there is no controlling terminal. This happened when testing oscap
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on a test system with no pty. As an alternative, the system provides
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also cuserid() function which gets the effective user ID of the process.
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However, these 2 values differ when the program is executed under sudo.
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From the user experience point of view, it would be better to have
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displayed there the user logged in on the controlling terminal. As a
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compromise, we will first attempt to obtain the name using getlogin()
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and if that fails we will run cuserid().
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---
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src/XCCDF/result.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/src/XCCDF/result.c b/src/XCCDF/result.c
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index cd03e6bd8f..cbe016c44a 100644
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--- a/src/XCCDF/result.c
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+++ b/src/XCCDF/result.c
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@@ -217,7 +217,10 @@ static inline void _xccdf_result_fill_identity(struct xccdf_result *result)
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xccdf_identity_set_authenticated(id, 0);
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xccdf_identity_set_privileged(id, 0);
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#ifdef OSCAP_UNIX
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- xccdf_identity_set_name(id, getlogin());
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+ char *name = getlogin();
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+ if (name == NULL)
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+ name = cuserid(NULL);
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+ xccdf_identity_set_name(id, name);
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#elif defined(OS_WINDOWS)
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GetUserName((TCHAR *) w32_username, &w32_usernamesize); /* XXX: Check the return value? */
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xccdf_identity_set_name(id, w32_username);
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