1/* 2 * Copyright (c) 2007-2013 Apple Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24#include <stdlib.h> 25#include <stdio.h> 26#include <stdarg.h> 27#include <limits.h> 28#include "secure.h" 29 30int 31__sprintf_chk (char *dest, int flags, size_t dstlen, const char *format, ...) 32{ 33 va_list arg; 34 int done; 35 36 va_start (arg, format); 37 38 if (__builtin_expect (dstlen > (size_t) INT_MAX, 0)) 39 done = vsprintf (dest, format, arg); 40 else 41 { 42 done = vsnprintf (dest, dstlen, format, arg); 43 if (__builtin_expect(done >= 0 && (size_t) done >= dstlen, 0)) 44 __chk_fail_overflow (); 45 } 46 47 va_end (arg); 48 49 return done; 50} 51