From 2fc4a488978a03338ecc65403597582c77dabeea Mon Sep 17 00:00:00 2001
From: des <des@FreeBSD.org>
Date: Mon, 18 Mar 2002 09:55:03 +0000
Subject: Vendor import of OpenSSH 3.1

---
 crypto/openssh/auth-rh-rsa.c | 51 +++++++-------------------------------------
 1 file changed, 8 insertions(+), 43 deletions(-)

(limited to 'crypto/openssh/auth-rh-rsa.c')

diff --git a/crypto/openssh/auth-rh-rsa.c b/crypto/openssh/auth-rh-rsa.c
index 506a5a2..d1b7ae9 100644
--- a/crypto/openssh/auth-rh-rsa.c
+++ b/crypto/openssh/auth-rh-rsa.c
@@ -13,10 +13,9 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: auth-rh-rsa.c,v 1.23 2001/04/06 21:00:04 markus Exp $");
+RCSID("$OpenBSD: auth-rh-rsa.c,v 1.29 2002/03/04 12:43:06 markus Exp $");
 
 #include "packet.h"
-#include "xmalloc.h"
 #include "uidswap.h"
 #include "log.h"
 #include "servconf.h"
@@ -24,7 +23,6 @@ RCSID("$OpenBSD: auth-rh-rsa.c,v 1.23 2001/04/06 21:00:04 markus Exp $");
 #include "hostfile.h"
 #include "pathnames.h"
 #include "auth.h"
-#include "tildexpand.h"
 #include "canohost.h"
 
 /*
@@ -33,16 +31,15 @@ RCSID("$OpenBSD: auth-rh-rsa.c,v 1.23 2001/04/06 21:00:04 markus Exp $");
  */
 
 int
-auth_rhosts_rsa(struct passwd *pw, const char *client_user, RSA *client_host_key)
+auth_rhosts_rsa(struct passwd *pw, const char *client_user, Key *client_host_key)
 {
 	extern ServerOptions options;
 	const char *canonical_hostname;
 	HostStatus host_status;
-	Key *client_key, *found;
 
 	debug("Trying rhosts with RSA host authentication for client user %.100s", client_user);
 
-	if (pw == NULL || client_host_key == NULL)
+	if (pw == NULL || client_host_key == NULL || client_host_key->rsa == NULL)
 		return 0;
 
 	/* Check if we would accept it using rhosts authentication. */
@@ -50,45 +47,13 @@ auth_rhosts_rsa(struct passwd *pw, const char *client_user, RSA *client_host_key
 		return 0;
 
 	canonical_hostname = get_canonical_hostname(
-	    options.reverse_mapping_check);
+	    options.verify_reverse_mapping);
 
 	debug("Rhosts RSA authentication: canonical host %.900s", canonical_hostname);
 
-	/* wrap the RSA key into a 'generic' key */
-	client_key = key_new(KEY_RSA1);
-	BN_copy(client_key->rsa->e, client_host_key->e);
-	BN_copy(client_key->rsa->n, client_host_key->n);
-	found = key_new(KEY_RSA1);
-
-	/* Check if we know the host and its host key. */
-	host_status = check_host_in_hostfile(_PATH_SSH_SYSTEM_HOSTFILE, canonical_hostname,
-	    client_key, found, NULL);
-
-	/* Check user host file unless ignored. */
-	if (host_status != HOST_OK && !options.ignore_user_known_hosts) {
-		struct stat st;
-		char *user_hostfile = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
-		/*
-		 * Check file permissions of _PATH_SSH_USER_HOSTFILE, auth_rsa()
-		 * did already check pw->pw_dir, but there is a race XXX
-		 */
-		if (options.strict_modes &&
-		    (stat(user_hostfile, &st) == 0) &&
-		    ((st.st_uid != 0 && st.st_uid != pw->pw_uid) ||
-		     (st.st_mode & 022) != 0)) {
-			log("Rhosts RSA authentication refused for %.100s: bad owner or modes for %.200s",
-			    pw->pw_name, user_hostfile);
-		} else {
-			/* XXX race between stat and the following open() */
-			temporarily_use_uid(pw);
-			host_status = check_host_in_hostfile(user_hostfile, canonical_hostname,
-			    client_key, found, NULL);
-			restore_uid();
-		}
-		xfree(user_hostfile);
-	}
-	key_free(client_key);
-	key_free(found);
+	host_status = check_key_in_hostfiles(pw, client_host_key,
+	    canonical_hostname, _PATH_SSH_SYSTEM_HOSTFILE,
+	    options.ignore_user_known_hosts ? NULL : _PATH_SSH_USER_HOSTFILE);
 
 	if (host_status != HOST_OK) {
 		debug("Rhosts with RSA host authentication denied: unknown or invalid host key");
@@ -98,7 +63,7 @@ auth_rhosts_rsa(struct passwd *pw, const char *client_user, RSA *client_host_key
 	/* A matching host key was found and is known. */
 
 	/* Perform the challenge-response dialog with the client for the host key. */
-	if (!auth_rsa_challenge_dialog(client_host_key)) {
+	if (!auth_rsa_challenge_dialog(client_host_key->rsa)) {
 		log("Client on %.800s failed to respond correctly to host authentication.",
 		    canonical_hostname);
 		return 0;
-- 
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