libclamunrar/unrarhlp.c
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 /*
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  *  Copyright (C) 2015, 2017 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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  *  Copyright (C) 2007 Sourcefire, Inc.
  *
  *  The unRAR sources may be used in any software to handle RAR
  *  archives without limitations free of charge, but cannot be used
  *  to re-create the RAR compression algorithm, which is proprietary.
  *  Distribution of modified unRAR sources in separate form or as a
  *  part of other software is permitted, provided that it is clearly
  *  stated in the documentation and source comments that the code may
  *  not be used to develop a RAR (WinRAR) compatible archiver.
  */
 
 #include <stdio.h>
 #include <stdlib.h>
 
 #include "libclamunrar/unrarhlp.h"
 
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 #ifdef RAR_HIGH_DEBUG
 #define rar_dbgmsg printf
 #else
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 static void rar_dbgmsg(const char* fmt,...){(void)fmt;}
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 #endif
 
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 #define RAR_MAX_ALLOCATION 184549376
 
 void *rar_malloc(size_t size)
 {
 	void *alloc;
 
 
     if(!size || size > RAR_MAX_ALLOCATION) {
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 	rar_dbgmsg("UNRAR: rar_malloc(): Attempt to allocate %lu bytes. Please report to http://bugs.clamav.net\n", size);
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 	return NULL;
     }
 
     alloc = malloc(size);
 
     if(!alloc) {
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 	fprintf(stderr, "UNRAR: rar_malloc(): Can't allocate memory (%llu bytes).\n", (long long unsigned)size);
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 	return NULL;
     } else return alloc;
 }
 
 void *rar_realloc2(void *ptr, size_t size)
 {
 	void *alloc;
 
 
     if(!size || size > RAR_MAX_ALLOCATION) {
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 	rar_dbgmsg("UNRAR: rar_realloc2(): Attempt to allocate %lu bytes. Please report to http://bugs.clamav.net\n", size);
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 	return NULL;
     }
 
     alloc = realloc(ptr, size);
 
     if(!alloc) {
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 	fprintf(stderr, "UNRAR: rar_realloc2(): Can't allocate memory (%llu bytes).\n", (long long unsigned)size);
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 	if(ptr)
 	    free(ptr);
 	return NULL;
     } else return alloc;
 }