- djm@cvs.openbsd.org 2010/01/30 02:54:53

[openssh.git] / sshconnect1.c

diff --git a/sshconnect1.c b/sshconnect1.c
index 440d7c5bdb07ce0804f266befe7fcc438a6f2e95..fd07bbf7418a15b7c87d1816c811cdc7829acd88 100644 (file)
--- a/sshconnect1.c
+++ b/sshconnect1.c
@@ -1,3 +1,4 @@
+/* $OpenBSD: sshconnect1.c,v 1.70 2006/11/06 21:25:28 markus Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -13,28 +14,38 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: sshconnect1.c,v 1.62 2005/10/30 08:52:18 djm Exp $");
+
+#include <sys/types.h>
+#include <sys/socket.h>
 
 #include <openssl/bn.h>
 #include <openssl/md5.h>
 
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <pwd.h>
+
+#include "xmalloc.h"
 #include "ssh.h"
 #include "ssh1.h"
-#include "xmalloc.h"
 #include "rsa.h"
 #include "buffer.h"
 #include "packet.h"
+#include "key.h"
+#include "cipher.h"
 #include "kex.h"
 #include "uidswap.h"
 #include "log.h"
 #include "readconf.h"
-#include "key.h"
 #include "authfd.h"
 #include "sshconnect.h"
 #include "authfile.h"
 #include "misc.h"
-#include "cipher.h"
 #include "canohost.h"
+#include "hostfile.h"
 #include "auth.h"
 
 /* Session id for the current session. */
@@ -197,7 +208,7 @@ try_rsa_authentication(int idx)
        BIGNUM *challenge;
        Key *public, *private;
        char buf[300], *passphrase, *comment, *authfile;
-       int i, type, quit;
+       int i, perm_ok = 1, type, quit;
 
        public = options.identity_keys[idx];
        authfile = options.identity_files[idx];
@@ -243,15 +254,16 @@ try_rsa_authentication(int idx)
        if (public->flags & KEY_FLAG_EXT)
                private = public;
        else
-               private = key_load_private_type(KEY_RSA1, authfile, "", NULL);
-       if (private == NULL && !options.batch_mode) {
+               private = key_load_private_type(KEY_RSA1, authfile, "", NULL,
+                   &perm_ok);
+       if (private == NULL && !options.batch_mode && perm_ok) {
                snprintf(buf, sizeof(buf),
                    "Enter passphrase for RSA key '%.100s': ", comment);
                for (i = 0; i < options.number_of_password_prompts; i++) {
                        passphrase = read_passphrase(buf, 0);
                        if (strcmp(passphrase, "") != 0) {
                                private = key_load_private_type(KEY_RSA1,
-                                   authfile, passphrase, NULL);
+                                   authfile, passphrase, NULL, NULL);
                                quit = 0;
                        } else {
                                debug2("no passphrase given, try next key");
@@ -268,7 +280,7 @@ try_rsa_authentication(int idx)
        xfree(comment);
 
        if (private == NULL) {
-               if (!options.batch_mode)
+               if (!options.batch_mode && perm_ok)
                        error("Bad passphrase.");
 
                /* Send a dummy response packet to avoid protocol error. */
@@ -551,14 +563,20 @@ ssh_kex(char *host, struct sockaddr *hostaddr)
         * the first 16 bytes of the session id.
         */
        if ((key = BN_new()) == NULL)
-               fatal("respond_to_rsa_challenge: BN_new failed");
-       BN_set_word(key, 0);
+               fatal("ssh_kex: BN_new failed");
+       if (BN_set_word(key, 0) == 0)
+               fatal("ssh_kex: BN_set_word failed");
        for (i = 0; i < SSH_SESSION_KEY_LENGTH; i++) {
-               BN_lshift(key, key, 8);
-               if (i < 16)
-                       BN_add_word(key, session_key[i] ^ session_id[i]);
-               else
-                       BN_add_word(key, session_key[i]);
+               if (BN_lshift(key, key, 8) == 0)
+                       fatal("ssh_kex: BN_lshift failed");
+               if (i < 16) {
+                       if (BN_add_word(key, session_key[i] ^ session_id[i])
+                           == 0)
+                               fatal("ssh_kex: BN_add_word failed");
+               } else {
+                       if (BN_add_word(key, session_key[i]) == 0)
+                               fatal("ssh_kex: BN_add_word failed");
+               }
        }
 
        /*