xref: /freebsd/kerberos5/lib/libgssapi_krb5/pname_to_uid.c (revision 641a6cfb86023499caafe26a4d821a0b885cf00b)
1 /*-
2  * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
3  * Authors: Doug Rabson <dfr@rabson.org>
4  * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 /* $FreeBSD$ */
28 
29 #include <pwd.h>
30 
31 #include "krb5/gsskrb5_locl.h"
32 
33 OM_uint32
34 _gsskrb5_pname_to_uid(OM_uint32 *minor_status, const gss_name_t pname,
35     const gss_OID mech, uid_t *uidp)
36 {
37 	krb5_context context;
38 	krb5_const_principal name = (krb5_const_principal) pname;
39 	krb5_error_code kret;
40 	char lname[MAXLOGNAME + 1], buf[128];
41 	struct passwd pwd, *pw;
42 
43 	GSSAPI_KRB5_INIT (&context);
44 
45 	kret = krb5_aname_to_localname(context, name, sizeof(lname), lname);
46 	if (kret) {
47 		*minor_status = kret;
48 		return (GSS_S_FAILURE);
49 	}
50 
51 	*minor_status = 0;
52 	getpwnam_r(lname, &pwd, buf, sizeof(buf), &pw);
53 	if (pw) {
54 		*uidp = pw->pw_uid;
55 		return (GSS_S_COMPLETE);
56 	} else {
57 		return (GSS_S_FAILURE);
58 	}
59 }
60