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