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Diffstat (limited to 'deps/flac-1.3.2/include/share/alloc.h')
| -rw-r--r-- | deps/flac-1.3.2/include/share/alloc.h | 219 |
1 files changed, 0 insertions, 219 deletions
diff --git a/deps/flac-1.3.2/include/share/alloc.h b/deps/flac-1.3.2/include/share/alloc.h deleted file mode 100644 index 914de9b..0000000 --- a/deps/flac-1.3.2/include/share/alloc.h +++ /dev/null @@ -1,219 +0,0 @@ -/* alloc - Convenience routines for safely allocating memory - * Copyright (C) 2007-2009 Josh Coalson - * Copyright (C) 2011-2016 Xiph.Org Foundation - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * - 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. - * - * - Neither the name of the Xiph.org Foundation nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * ``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 FOUNDATION OR - * 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. - */ - -#ifndef FLAC__SHARE__ALLOC_H -#define FLAC__SHARE__ALLOC_H - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -/* WATCHOUT: for c++ you may have to #define __STDC_LIMIT_MACROS 1 real early - * before #including this file, otherwise SIZE_MAX might not be defined - */ - -#include <limits.h> /* for SIZE_MAX */ -#if HAVE_STDINT_H -#include <stdint.h> /* for SIZE_MAX in case limits.h didn't get it */ -#endif -#include <stdlib.h> /* for size_t, malloc(), etc */ -#include "share/compat.h" - -#ifndef SIZE_MAX -# ifndef SIZE_T_MAX -# ifdef _MSC_VER -# ifdef _WIN64 -# define SIZE_T_MAX FLAC__U64L(0xffffffffffffffff) -# else -# define SIZE_T_MAX 0xffffffff -# endif -# else -# error -# endif -# endif -# define SIZE_MAX SIZE_T_MAX -#endif - -/* avoid malloc()ing 0 bytes, see: - * https://www.securecoding.cert.org/confluence/display/seccode/MEM04-A.+Do+not+make+assumptions+about+the+result+of+allocating+0+bytes?focusedCommentId=5407003 -*/ -static inline void *safe_malloc_(size_t size) -{ - /* malloc(0) is undefined; FLAC src convention is to always allocate */ - if(!size) - size++; - return malloc(size); -} - -static inline void *safe_calloc_(size_t nmemb, size_t size) -{ - if(!nmemb || !size) - return malloc(1); /* malloc(0) is undefined; FLAC src convention is to always allocate */ - return calloc(nmemb, size); -} - -/*@@@@ there's probably a better way to prevent overflows when allocating untrusted sums but this works for now */ - -static inline void *safe_malloc_add_2op_(size_t size1, size_t size2) -{ - size2 += size1; - if(size2 < size1) - return 0; - return safe_malloc_(size2); -} - -static inline void *safe_malloc_add_3op_(size_t size1, size_t size2, size_t size3) -{ - size2 += size1; - if(size2 < size1) - return 0; - size3 += size2; - if(size3 < size2) - return 0; - return safe_malloc_(size3); -} - -static inline void *safe_malloc_add_4op_(size_t size1, size_t size2, size_t size3, size_t size4) -{ - size2 += size1; - if(size2 < size1) - return 0; - size3 += size2; - if(size3 < size2) - return 0; - size4 += size3; - if(size4 < size3) - return 0; - return safe_malloc_(size4); -} - -void *safe_malloc_mul_2op_(size_t size1, size_t size2) ; - -static inline void *safe_malloc_mul_3op_(size_t size1, size_t size2, size_t size3) -{ - if(!size1 || !size2 || !size3) - return malloc(1); /* malloc(0) is undefined; FLAC src convention is to always allocate */ - if(size1 > SIZE_MAX / size2) - return 0; - size1 *= size2; - if(size1 > SIZE_MAX / size3) - return 0; - return malloc(size1*size3); -} - -/* size1*size2 + size3 */ -static inline void *safe_malloc_mul2add_(size_t size1, size_t size2, size_t size3) -{ - if(!size1 || !size2) - return safe_malloc_(size3); - if(size1 > SIZE_MAX / size2) - return 0; - return safe_malloc_add_2op_(size1*size2, size3); -} - -/* size1 * (size2 + size3) */ -static inline void *safe_malloc_muladd2_(size_t size1, size_t size2, size_t size3) -{ - if(!size1 || (!size2 && !size3)) - return malloc(1); /* malloc(0) is undefined; FLAC src convention is to always allocate */ - size2 += size3; - if(size2 < size3) - return 0; - if(size1 > SIZE_MAX / size2) - return 0; - return malloc(size1*size2); -} - -static inline void *safe_realloc_(void *ptr, size_t size) -{ - void *oldptr = ptr; - void *newptr = realloc(ptr, size); - if(size > 0 && newptr == 0) - free(oldptr); - return newptr; -} -static inline void *safe_realloc_add_2op_(void *ptr, size_t size1, size_t size2) -{ - size2 += size1; - if(size2 < size1) { - free(ptr); - return 0; - } - return realloc(ptr, size2); -} - -static inline void *safe_realloc_add_3op_(void *ptr, size_t size1, size_t size2, size_t size3) -{ - size2 += size1; - if(size2 < size1) - return 0; - size3 += size2; - if(size3 < size2) - return 0; - return realloc(ptr, size3); -} - -static inline void *safe_realloc_add_4op_(void *ptr, size_t size1, size_t size2, size_t size3, size_t size4) -{ - size2 += size1; - if(size2 < size1) - return 0; - size3 += size2; - if(size3 < size2) - return 0; - size4 += size3; - if(size4 < size3) - return 0; - return realloc(ptr, size4); -} - -static inline void *safe_realloc_mul_2op_(void *ptr, size_t size1, size_t size2) -{ - if(!size1 || !size2) - return realloc(ptr, 0); /* preserve POSIX realloc(ptr, 0) semantics */ - if(size1 > SIZE_MAX / size2) - return 0; - return safe_realloc_(ptr, size1*size2); -} - -/* size1 * (size2 + size3) */ -static inline void *safe_realloc_muladd2_(void *ptr, size_t size1, size_t size2, size_t size3) -{ - if(!size1 || (!size2 && !size3)) - return realloc(ptr, 0); /* preserve POSIX realloc(ptr, 0) semantics */ - size2 += size3; - if(size2 < size3) - return 0; - return safe_realloc_mul_2op_(ptr, size1, size2); -} - -#endif |