130 lines
3.8 KiB
C++
130 lines
3.8 KiB
C++
// Copyright (c) 2014-2024, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdint.h>
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#include "gtest/gtest.h"
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// OS X, FreeBSD, and OpenBSD don't need malloc.h
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#if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__OpenBSD__) && \
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!defined(__DragonFly__)
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#include <malloc.h>
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#endif
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//#define TEST_ORIGINAL
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//#define VERBOSE
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#ifdef TEST_ORIGINAL
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size_t slow_memmem_original(void* start_buff, size_t buflen,void* pat,size_t patlen)
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{
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void* buf = start_buff;
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void* end=(char*)buf+buflen-patlen;
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while((buf=memchr(buf,((char*)pat)[0],buflen)))
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{
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if(buf>end)
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return 0;
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if(memcmp(buf,pat,patlen)==0)
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return (char*)buf - (char*)start_buff;
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buf=(char*)buf+1;
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}
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return 0;
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}
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#define slow_memmem slow_memmem_original
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#else
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namespace cryptonote {
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size_t slow_memmem(const void* start_buff, size_t buflen,const void* pat,size_t patlen);
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}
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using namespace cryptonote;
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#endif
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static const struct {
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size_t buflen;
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const char *buf;
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size_t patlen;
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const char *pat;
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size_t res;
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} T[]={
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{0,"",0,"",0},
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{1,"",0,"",0},
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{0,"",1,"",0},
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{1,"x",1,"x",0},
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{2,"x",1,"",1},
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{1,"x",1,"",0},
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{1,"x",2,"x",0},
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{2,"ax",2,"x",0},
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{1,"xx",2,"xx",0},
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{4,"abcd",3,"abc",0},
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{4,"abcd",3,"bcd",1},
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{4,"abcd",4,"abcd",0},
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{4,"abcd",1,"d",3},
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{4,"abcd",1,"c",2},
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{4,"abcd",1,"bc",1},
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{4,"abcd",1,"",0},
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{3,"abcd",1,"d",0},
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{5,"aaaab",2,"ab",3},
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{7,"aaaabab",2,"ab",3},
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{7,"aaaabab",3,"abc",0},
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{4,"abcd",2,"cd",2},
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{3,"abcd",2,"cd",0},
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{3,"a\0b",1,"",1},
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{3,"a\0b",2,"\0b",1},
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{8,"xxxxxxab",3,"xyz",0},
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{8,"xxxxxxab",6,"abcdef",0},
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{9,"\0xxxxxab",3,"ab",6},
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{4,"\0\0a",3,"\0a",1}, //
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};
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TEST(slowmem,Success)
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{
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size_t n;
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for (n=0;n<sizeof(T)/sizeof(T[0]);++n) {
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#ifdef VERBOSE
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printf("%3zu: ",n);
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fflush(stdout);
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#endif
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void *buf=malloc(T[n].buflen);
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memcpy(buf,T[n].buf,T[n].buflen);
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void *pat=malloc(T[n].patlen);
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memcpy(pat,T[n].pat,T[n].patlen);
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size_t res=slow_memmem(buf,T[n].buflen,pat,T[n].patlen);
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free(pat);
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free(buf);
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ASSERT_EQ(res,T[n].res);
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#ifdef VERBOSE
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if (res!=T[n].res) printf("failed (got %zu, expected %zu)",res,T[n].res); else printf("ok");
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printf("\n");
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#endif
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}
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}
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