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/*
* SPDX-FileCopyrightText: 1996 - 1997, Marek Michałkiewicz
* SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
* SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/*
* myname.c - determine the current username and get the passwd entry
*
*/
#include <config.h>
#ident "$Id$"
#include <pwd.h>
#include "defines.h"
#include "prototypes.h"
#include "string/strcmp/streq.h"
/*@null@*/ /*@only@*/struct passwd *get_my_pwent (void)
{
struct passwd *pw;
const char *cp = getlogin ();
uid_t ruid = getuid ();
/*
* Try getlogin() first - if it fails or returns a non-existent
* username, or a username which doesn't match the real UID, fall
* back to getpwuid(getuid()). This should work reasonably with
* usernames longer than the utmp limit (8 characters), as well as
* shared UIDs - but not both at the same time...
*
* XXX - when running from su, will return the current user (not
* the original user, like getlogin() does). Does this matter?
*/
if ((NULL != cp) && !streq(cp, "")) {
pw = xgetpwnam (cp);
if ((NULL != pw) && (pw->pw_uid == ruid)) {
return pw;
}
if (NULL != pw) {
pw_free (pw);
}
}
return xgetpwuid (ruid);
}
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