1 /* This file is part of the Project Athena Zephyr Notification System.
2 * It contains source for the ZGetSender.c function.
3 *
4 * Created by: Robert French
5 *
6 * Copyright (c) 1987, 1991 by the Massachusetts Institute of Technology.
7 * For copying and distribution information, see the file
8 * "mit-copyright.h".
9 */
10
11 #include "internal.h"
12
13 #ifndef WIN32
14 #include <pwd.h>
15 #endif
16
ZGetSender()17 char *ZGetSender()
18 {
19 struct passwd *pw;
20 #ifdef ZEPHYR_USES_KERBEROS
21 char pname[ANAME_SZ];
22 char pinst[INST_SZ];
23 char prealm[REALM_SZ];
24 static char sender[ANAME_SZ+INST_SZ+REALM_SZ+3] = "";
25 long int kerror;
26 #else
27 static char sender[128] = "";
28 #endif
29
30 #ifdef WIN32
31 unsigned long sender_size = sizeof(sender) - 1;
32 #endif
33
34 #ifdef ZEPHYR_USES_KERBEROS
35 if ((kerror = krb_get_tf_fullname((char *)TKT_FILE, pname, pinst, prealm)) == KSUCCESS)
36 {
37 sprintf(sender, "%s%s%s@%s", pname, (pinst[0] ? "." : ""), pinst, prealm);
38 return sender;
39 }
40 #endif
41
42 #ifdef WIN32
43 GetUserName(sender, &sender_size);
44 #else
45 /* XXX a uid_t is a u_short (now), but getpwuid
46 * wants an int. AARGH! */
47 pw = getpwuid((int) getuid());
48 if (!pw)
49 return ("unknown");
50 sprintf(sender, "%s@%s", pw->pw_name, __Zephyr_realm);
51 #endif
52 return sender;
53 }
54