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/* This file is part of the Project Athena Zephyr Notification System.
* It contains source for the ZGetSender.c function.
*
* Created by: Robert French
*
* $Id$
*
* Copyright (c) 1987, 1991 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include <internal.h>
#ifndef lint
static const char rcsid_ZGetSender_c[] =
"$Id$";
#endif
#include <pwd.h>
char *
ZGetSender(void)
{
struct passwd *pw;
static char *sender = NULL;
#ifdef HAVE_KRB5
krb5_ccache ccache;
krb5_principal principal;
char *prname;
int result;
#else
#ifdef HAVE_KRB4
char pname[ANAME_SZ], pinst[INST_SZ], prealm[REALM_SZ];
#endif
#endif
/* Return it if already cached */
if (sender)
return (sender);
#ifdef HAVE_KRB5
result = krb5_cc_default(Z_krb5_ctx, &ccache);
if (!result) {
result = krb5_cc_get_principal(Z_krb5_ctx, ccache, &principal);
if (!result) {
krb5_unparse_name(Z_krb5_ctx, principal, &prname);
sender = strdup(prname);
krb5_free_unparsed_name(Z_krb5_ctx, prname);
krb5_free_principal(Z_krb5_ctx, principal);
return sender;
}
krb5_cc_close(Z_krb5_ctx, ccache);
}
#else
#ifdef HAVE_KRB4
if (krb_get_tf_fullname((char *)TKT_FILE, pname, pinst, prealm) == KSUCCESS)
{
sender = malloc(ANAME_SZ+INST_SZ+REALM_SZ+3);
if (sender)
(void) sprintf(sender, "%s%s%s@%s", pname, (pinst[0]?".":""),
pinst, prealm);
return (sender);
}
#endif
#endif
/* XXX a uid_t is a u_short (now), but getpwuid
* wants an int. AARGH! */
pw = getpwuid((int) getuid());
if (!pw)
return ("unknown");
sender = malloc(strlen(pw->pw_name) + strlen(__Zephyr_realm) + 2);
if (sender)
(void) sprintf(sender, "%s@%s", pw->pw_name, __Zephyr_realm);
return (sender);
}
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