forked from townforge/townforge
130 lines
3.8 KiB
C++
130 lines
3.8 KiB
C++
// Copyright (c) 2014-2019, The Monero 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. Neither the name of the copyright holder 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 COPYRIGHT HOLDER 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.
|
|
//
|
|
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
#include "gtest/gtest.h"
|
|
|
|
// OS X, FreeBSD, and OpenBSD don't need malloc.h
|
|
#if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__OpenBSD__) && \
|
|
!defined(__DragonFly__)
|
|
#include <malloc.h>
|
|
#endif
|
|
|
|
//#define TEST_ORIGINAL
|
|
//#define VERBOSE
|
|
|
|
#ifdef TEST_ORIGINAL
|
|
size_t slow_memmem_original(void* start_buff, size_t buflen,void* pat,size_t patlen)
|
|
{
|
|
void* buf = start_buff;
|
|
void* end=(char*)buf+buflen-patlen;
|
|
while((buf=memchr(buf,((char*)pat)[0],buflen)))
|
|
{
|
|
if(buf>end)
|
|
return 0;
|
|
if(memcmp(buf,pat,patlen)==0)
|
|
return (char*)buf - (char*)start_buff;
|
|
buf=(char*)buf+1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define slow_memmem slow_memmem_original
|
|
#else
|
|
namespace cryptonote {
|
|
size_t slow_memmem(const void* start_buff, size_t buflen,const void* pat,size_t patlen);
|
|
}
|
|
using namespace cryptonote;
|
|
#endif
|
|
|
|
static const struct {
|
|
size_t buflen;
|
|
const char *buf;
|
|
size_t patlen;
|
|
const char *pat;
|
|
size_t res;
|
|
} T[]={
|
|
{0,"",0,"",0},
|
|
{1,"",0,"",0},
|
|
{0,"",1,"",0},
|
|
{1,"x",1,"x",0},
|
|
{2,"x",1,"",1},
|
|
{1,"x",1,"",0},
|
|
{1,"x",2,"x",0},
|
|
{2,"ax",2,"x",0},
|
|
{1,"xx",2,"xx",0},
|
|
{4,"abcd",3,"abc",0},
|
|
{4,"abcd",3,"bcd",1},
|
|
{4,"abcd",4,"abcd",0},
|
|
{4,"abcd",1,"d",3},
|
|
{4,"abcd",1,"c",2},
|
|
{4,"abcd",1,"bc",1},
|
|
{4,"abcd",1,"",0},
|
|
{3,"abcd",1,"d",0},
|
|
{5,"aaaab",2,"ab",3},
|
|
{7,"aaaabab",2,"ab",3},
|
|
{7,"aaaabab",3,"abc",0},
|
|
{4,"abcd",2,"cd",2},
|
|
{3,"abcd",2,"cd",0},
|
|
{3,"a\0b",1,"",1},
|
|
{3,"a\0b",2,"\0b",1},
|
|
{8,"xxxxxxab",3,"xyz",0},
|
|
{8,"xxxxxxab",6,"abcdef",0},
|
|
{9,"\0xxxxxab",3,"ab",6},
|
|
{4,"\0\0a",3,"\0a",1}, //
|
|
};
|
|
|
|
TEST(slowmem,Success)
|
|
{
|
|
size_t n;
|
|
for (n=0;n<sizeof(T)/sizeof(T[0]);++n) {
|
|
#ifdef VERBOSE
|
|
printf("%3zu: ",n);
|
|
fflush(stdout);
|
|
#endif
|
|
void *buf=malloc(T[n].buflen);
|
|
memcpy(buf,T[n].buf,T[n].buflen);
|
|
void *pat=malloc(T[n].patlen);
|
|
memcpy(pat,T[n].pat,T[n].patlen);
|
|
size_t res=slow_memmem(buf,T[n].buflen,pat,T[n].patlen);
|
|
free(pat);
|
|
free(buf);
|
|
ASSERT_EQ(res,T[n].res);
|
|
#ifdef VERBOSE
|
|
if (res!=T[n].res) printf("failed (got %zu, expected %zu)",res,T[n].res); else printf("ok");
|
|
printf("\n");
|
|
#endif
|
|
}
|
|
}
|