Check for overlows and error return from ASN1_object_size()

[openssl.git] / crypto / asn1 / a_mbstr.c

diff --git a/crypto/asn1/a_mbstr.c b/crypto/asn1/a_mbstr.c
index 823839ffbab8f6f331feee18559a2ab76032d082..5578e9239769fce1b1c402b848beb0d24614aa91 100644 (file)
--- a/crypto/asn1/a_mbstr.c
+++ b/crypto/asn1/a_mbstr.c
@@ -1,60 +1,10 @@
-/* a_mbstr.c */
 /*
- * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
- * 1999.
- */
-/* ====================================================================
- * Copyright (c) 1999 The OpenSSL Project.  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.
- *
- * 3. All advertising materials mentioning features or use of this
- *    software must display the following acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS CONTRIBUTORS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+ * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
  *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
  */
 
 #include <stdio.h>
@@ -78,8 +28,8 @@ static int is_printable(unsigned long value);
 /*
  * These functions take a string in UTF8, ASCII or multibyte form and a mask
  * of permissible ASN1 string types. It then works out the minimal type
- * (using the order Printable < IA5 < T61 < BMP < Universal < UTF8) and
- * creates a string of the correct type with the supplied data. Yes this is
+ * (using the order Numeric < Printable < IA5 < T61 < BMP < Universal < UTF8)
+ * and creates a string of the correct type with the supplied data. Yes this is
  * horrible: it has to be :-( The 'ncopy' form checks minimum and maximum
  * size limits too.
  */
@@ -200,7 +150,7 @@ int ASN1_mbstring_ncopy(ASN1_STRING **out, const unsigned char *in, int len,
     } else {
         free_out = 1;
         dest = ASN1_STRING_type_new(str_type);
-        if (!dest) {
+        if (dest == NULL) {
             ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ERR_R_MALLOC_FAILURE);
             return -1;
         }
@@ -425,11 +375,21 @@ static int is_printable(unsigned long value)
     return 0;
 }
 
+/* Return 1 if the character is a digit or space */
 static int is_numeric(unsigned long value)
 {
-    if (value > '9')
+    int ch;
+    if (value > 0x7f)
+        return 0;
+    ch = (int)value;
+#ifndef CHARSET_EBCDIC
+    if (!isdigit(ch) && ch != ' ')
+        return 0;
+#else
+    if (ch > os_toascii['9'])
         return 0;
-    if (value < '0' && value != 32)
+    if (ch < os_toascii['0'] && ch != os_toascii[' '])
         return 0;
+#endif
     return 1;
 }