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/*
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Find out login name for vlock, the VT locking program for linux.
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Copyright (C) 2002 Dmitry V. Levin <ldv@altlinux.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <pwd.h>
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#include "vlock.h"
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#include "nls.h"
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#include "kbd_error.h"
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/*
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* Try to find out proper login name.
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*/
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const char *
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get_username(void)
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{
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const char *name;
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struct passwd *pw = 0;
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uid_t uid = getuid();
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char *logname = getenv("LOGNAME");
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if (logname) {
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pw = getpwnam(logname);
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/* Ensure uid is same as current. */
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if (pw && pw->pw_uid != uid)
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pw = 0;
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}
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if (!pw)
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pw = getpwuid(uid);
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if (!pw)
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kbd_error(EXIT_FAILURE, 0, _("unrecognized user"));
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name = strdup(pw->pw_name);
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if (!name)
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kbd_error(EXIT_FAILURE, errno, "strdup");
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endpwent();
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return name;
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}
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