--- old/usr/src/cmd/ssh/sshd/auth-krb4.c	2016-08-16 20:42:18.226501313 -0400
+++ /dev/null	2016-08-16 20:42:18.000000000 -0400
@@ -1,370 +0,0 @@
-/*
- * Copyright (c) 1999 Dug Song.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "includes.h"
-RCSID("$OpenBSD: auth-krb4.c,v 1.28 2002/09/26 11:38:43 markus Exp $");
-
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
-#include "ssh.h"
-#include "ssh1.h"
-#include "packet.h"
-#include "xmalloc.h"
-#include "log.h"
-#include "servconf.h"
-#include "uidswap.h"
-#include "auth.h"
-
-#ifdef AFS
-#include "radix.h"
-#endif
-
-#ifdef KRB4
-extern ServerOptions options;
-
-static int
-krb4_init(void *context)
-{
-	static int cleanup_registered = 0;
-	Authctxt *authctxt = (Authctxt *)context;
-	const char *tkt_root = TKT_ROOT;
-	struct stat st;
-	int fd;
-
-	if (!authctxt->krb4_ticket_file) {
-		/* Set unique ticket string manually since we're still root. */
-		authctxt->krb4_ticket_file = xmalloc(MAXPATHLEN);
-#ifdef AFS
-		if (lstat("/ticket", &st) != -1)
-			tkt_root = "/ticket/";
-#endif /* AFS */
-		snprintf(authctxt->krb4_ticket_file, MAXPATHLEN, "%s%u_%ld",
-		    tkt_root, authctxt->pw->pw_uid, (long)getpid());
-		krb_set_tkt_string(authctxt->krb4_ticket_file);
-	}
-	/* Register ticket cleanup in case of fatal error. */
-	if (!cleanup_registered) {
-		fatal_add_cleanup(krb4_cleanup_proc, authctxt);
-		cleanup_registered = 1;
-	}
-	/* Try to create our ticket file. */
-	if ((fd = mkstemp(authctxt->krb4_ticket_file)) != -1) {
-		close(fd);
-		return (1);
-	}
-	/* Ticket file exists - make sure user owns it (just passed ticket). */
-	if (lstat(authctxt->krb4_ticket_file, &st) != -1) {
-		if (st.st_mode == (S_IFREG | S_IRUSR | S_IWUSR) &&
-		    st.st_uid == authctxt->pw->pw_uid)
-			return (1);
-	}
-	/* Failure - cancel cleanup function, leaving ticket for inspection. */
-	log("WARNING: bad ticket file %s", authctxt->krb4_ticket_file);
-
-	fatal_remove_cleanup(krb4_cleanup_proc, authctxt);
-	cleanup_registered = 0;
-
-	xfree(authctxt->krb4_ticket_file);
-	authctxt->krb4_ticket_file = NULL;
-
-	return (0);
-}
-
-/*
- * try krb4 authentication,
- * return 1 on success, 0 on failure, -1 if krb4 is not available
- */
-int
-auth_krb4_password(Authctxt *authctxt, const char *password)
-{
-	AUTH_DAT adata;
-	KTEXT_ST tkt;
-	struct hostent *hp;
-	struct passwd *pw;
-	char localhost[MAXHOSTNAMELEN], phost[INST_SZ], realm[REALM_SZ];
-	u_int32_t faddr;
-	int r;
-
-	if ((pw = authctxt->pw) == NULL)
-		return (0);
-
-	/*
-	 * Try Kerberos password authentication only for non-root
-	 * users and only if Kerberos is installed.
-	 */
-	if (pw->pw_uid != 0 && krb_get_lrealm(realm, 1) == KSUCCESS) {
-		/* Set up our ticket file. */
-		if (!krb4_init(authctxt)) {
-			log("Couldn't initialize Kerberos ticket file for %s!",
-			    pw->pw_name);
-			goto failure;
-		}
-		/* Try to get TGT using our password. */
-		r = krb_get_pw_in_tkt((char *) pw->pw_name, "", realm,
-		    "krbtgt", realm, DEFAULT_TKT_LIFE, (char *)password);
-		if (r != INTK_OK) {
-			debug("Kerberos v4 password authentication for %s "
-			    "failed: %s", pw->pw_name, krb_err_txt[r]);
-			goto failure;
-		}
-		/* Successful authentication. */
-		chown(tkt_string(), pw->pw_uid, pw->pw_gid);
-
-		/*
-		 * Now that we have a TGT, try to get a local
-		 * "rcmd" ticket to ensure that we are not talking
-		 * to a bogus Kerberos server.
-		 */
-		gethostname(localhost, sizeof(localhost));
-		strlcpy(phost, (char *)krb_get_phost(localhost),
-		    sizeof(phost));
-		r = krb_mk_req(&tkt, KRB4_SERVICE_NAME, phost, realm, 33);
-
-		if (r == KSUCCESS) {
-			if ((hp = gethostbyname(localhost)) == NULL) {
-				log("Couldn't get local host address!");
-				goto failure;
-			}
-			memmove((void *)&faddr, (void *)hp->h_addr,
-			    sizeof(faddr));
-
-			/* Verify our "rcmd" ticket. */
-			r = krb_rd_req(&tkt, KRB4_SERVICE_NAME, phost,
-			    faddr, &adata, "");
-			if (r == RD_AP_UNDEC) {
-				/*
-				 * Probably didn't have a srvtab on
-				 * localhost. Disallow login.
-				 */
-				log("Kerberos v4 TGT for %s unverifiable, "
-				    "no srvtab installed? krb_rd_req: %s",
-				    pw->pw_name, krb_err_txt[r]);
-				goto failure;
-			} else if (r != KSUCCESS) {
-				log("Kerberos v4 %s ticket unverifiable: %s",
-				    KRB4_SERVICE_NAME, krb_err_txt[r]);
-				goto failure;
-			}
-		} else if (r == KDC_PR_UNKNOWN) {
-			/*
-			 * Disallow login if no rcmd service exists, and
-			 * log the error.
-			 */
-			log("Kerberos v4 TGT for %s unverifiable: %s; %s.%s "
-			    "not registered, or srvtab is wrong?", pw->pw_name,
-			    krb_err_txt[r], KRB4_SERVICE_NAME, phost);
-			goto failure;
-		} else {
-			/*
-			 * TGT is bad, forget it. Possibly spoofed!
-			 */
-			debug("WARNING: Kerberos v4 TGT possibly spoofed "
-			    "for %s: %s", pw->pw_name, krb_err_txt[r]);
-			goto failure;
-		}
-		/* Authentication succeeded. */
-		return (1);
-	} else
-		/* Logging in as root or no local Kerberos realm. */
-		debug("Unable to authenticate to Kerberos.");
-
- failure:
-	krb4_cleanup_proc(authctxt);
-
-	if (!options.kerberos_or_local_passwd)
-		return (0);
-
-	/* Fall back to ordinary passwd authentication. */
-	return (-1);
-}
-
-void
-krb4_cleanup_proc(void *context)
-{
-	Authctxt *authctxt = (Authctxt *)context;
-	debug("krb4_cleanup_proc called");
-	if (authctxt->krb4_ticket_file) {
-		(void) dest_tkt();
-		xfree(authctxt->krb4_ticket_file);
-		authctxt->krb4_ticket_file = NULL;
-	}
-}
-
-int
-auth_krb4(Authctxt *authctxt, KTEXT auth, char **client, KTEXT reply)
-{
-	AUTH_DAT adat = {0};
-	Key_schedule schedule;
-	struct sockaddr_in local, foreign;
-	char instance[INST_SZ];
-	socklen_t slen;
-	u_int cksum;
-	int r, s;
-
-	s = packet_get_connection_in();
-
-	slen = sizeof(local);
-	memset(&local, 0, sizeof(local));
-	if (getsockname(s, (struct sockaddr *) & local, &slen) < 0)
-		debug("getsockname failed: %.100s", strerror(errno));
-	slen = sizeof(foreign);
-	memset(&foreign, 0, sizeof(foreign));
-	if (getpeername(s, (struct sockaddr *) & foreign, &slen) < 0) {
-		debug("getpeername failed: %.100s", strerror(errno));
-		fatal_cleanup();
-	}
-	instance[0] = '*';
-	instance[1] = 0;
-
-	/* Get the encrypted request, challenge, and session key. */
-	if ((r = krb_rd_req(auth, KRB4_SERVICE_NAME, instance,
-	    0, &adat, ""))) {
-		debug("Kerberos v4 krb_rd_req: %.100s", krb_err_txt[r]);
-		return (0);
-	}
-	des_key_sched((des_cblock *) adat.session, schedule);
-
-	*client = xmalloc(MAX_K_NAME_SZ);
-	(void) snprintf(*client, MAX_K_NAME_SZ, "%s%s%s@%s", adat.pname,
-	    *adat.pinst ? "." : "", adat.pinst, adat.prealm);
-
-	/* Check ~/.klogin authorization now. */
-	if (kuserok(&adat, authctxt->user) != KSUCCESS) {
-		log("Kerberos v4 .klogin authorization failed for %s to "
-		    "account %s", *client, authctxt->user);
-		xfree(*client);
-		*client = NULL;
-		return (0);
-	}
-	/* Increment the checksum, and return it encrypted with the
-	   session key. */
-	cksum = adat.checksum + 1;
-	cksum = htonl(cksum);
-
-	/* If we can't successfully encrypt the checksum, we send back an
-	   empty message, admitting our failure. */
-	if ((r = krb_mk_priv((u_char *) & cksum, reply->dat, sizeof(cksum) + 1,
-	    schedule, &adat.session, &local, &foreign)) < 0) {
-		debug("Kerberos v4 mk_priv: (%d) %s", r, krb_err_txt[r]);
-		reply->dat[0] = 0;
-		reply->length = 0;
-	} else
-		reply->length = r;
-
-	/* Clear session key. */
-	memset(&adat.session, 0, sizeof(&adat.session));
-	return (1);
-}
-#endif /* KRB4 */
-
-#ifdef AFS
-int
-auth_krb4_tgt(Authctxt *authctxt, const char *string)
-{
-	CREDENTIALS creds;
-	struct passwd *pw;
-
-	if ((pw = authctxt->pw) == NULL)
-		goto failure;
-
-	temporarily_use_uid(pw);
-
-	if (!radix_to_creds(string, &creds)) {
-		log("Protocol error decoding Kerberos v4 TGT");
-		goto failure;
-	}
-	if (strncmp(creds.service, "", 1) == 0)	/* backward compatibility */
-		strlcpy(creds.service, "krbtgt", sizeof creds.service);
-
-	if (strcmp(creds.service, "krbtgt")) {
-		log("Kerberos v4 TGT (%s%s%s@%s) rejected for %s",
-		    creds.pname, creds.pinst[0] ? "." : "", creds.pinst,
-		    creds.realm, pw->pw_name);
-		goto failure;
-	}
-	if (!krb4_init(authctxt))
-		goto failure;
-
-	if (in_tkt(creds.pname, creds.pinst) != KSUCCESS)
-		goto failure;
-
-	if (save_credentials(creds.service, creds.instance, creds.realm,
-	    creds.session, creds.lifetime, creds.kvno, &creds.ticket_st,
-	    creds.issue_date) != KSUCCESS) {
-		debug("Kerberos v4 TGT refused: couldn't save credentials");
-		goto failure;
-	}
-	/* Successful authentication, passed all checks. */
-	chown(tkt_string(), pw->pw_uid, pw->pw_gid);
-
-	debug("Kerberos v4 TGT accepted (%s%s%s@%s)",
-	    creds.pname, creds.pinst[0] ? "." : "", creds.pinst, creds.realm);
-	memset(&creds, 0, sizeof(creds));
-
-	restore_uid();
-
-	return (1);
-
- failure:
-	krb4_cleanup_proc(authctxt);
-	memset(&creds, 0, sizeof(creds));
-	restore_uid();
-
-	return (0);
-}
-
-int
-auth_afs_token(Authctxt *authctxt, const char *token_string)
-{
-	CREDENTIALS creds;
-	struct passwd *pw;
-	uid_t uid;
-
-	if ((pw = authctxt->pw) == NULL)
-		return (0);
-
-	if (!radix_to_creds(token_string, &creds)) {
-		log("Protocol error decoding AFS token");
-		return (0);
-	}
-	if (strncmp(creds.service, "", 1) == 0)	/* backward compatibility */
-		strlcpy(creds.service, "afs", sizeof creds.service);
-
-	if (strncmp(creds.pname, "AFS ID ", 7) == 0)
-		uid = atoi(creds.pname + 7);
-	else
-		uid = pw->pw_uid;
-
-	if (kafs_settoken(creds.realm, uid, &creds)) {
-		log("AFS token (%s@%s) rejected for %s",
-		    creds.pname, creds.realm, pw->pw_name);
-		memset(&creds, 0, sizeof(creds));
-		return (0);
-	}
-	debug("AFS token accepted (%s@%s)", creds.pname, creds.realm);
-	memset(&creds, 0, sizeof(creds));
-
-	return (1);
-}
-#endif /* AFS */
