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/***
* Copyright 2017 Marc Stevens <marc@marc-stevens.nl>, Dan Shumow <danshu@microsoft.com>
* Distributed under the MIT Software License.
* See accompanying file LICENSE.txt or copy at
* https://opensource.org/licenses/MIT
***/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifndef _WIN32
#include <libgen.h>
#endif
#include "sha1.h"
#ifdef _WIN32
char* basename(char* path)
{
char *base = NULL, *cur = NULL;
base = path;
cur = path;
while (0 != *cur)
{
if ('\\' == *cur)
{
base = cur + 1;
}
cur++;
}
return base;
}
#endif
int main(int argc, char** argv)
{
FILE* fd;
unsigned char hash2[20];
char buffer[65536];
size_t size;
SHA1_CTX ctx2;
int i,j,foundcollision;
if (argc < 2)
{
fprintf(stderr, "Usage: %s <file>\n", basename(argv[0]));
return 1;
}
for (i=1; i < argc; ++i)
{
SHA1DCInit(&ctx2);
/* if the program name includes the word 'partial' then also test for reduced-round SHA-1 collisions */
if (NULL != strstr(argv[0], "partial"))
{
SHA1DCSetDetectReducedRoundCollision(&ctx2, 1);
}
if(!strcmp(argv[i],"-")) {
fd = stdin;
} else {
fd = fopen(argv[i], "rb");
}
if (fd == NULL)
{
fprintf(stderr, "cannot open file: %s: %s\n", argv[i], strerror(errno));
return 1;
}
while (1)
{
size=fread(buffer,1,65536,fd);
SHA1DCUpdate(&ctx2, buffer, (unsigned)(size));
if (size != 65536)
break;
}
if (ferror(fd))
{
fprintf(stderr, "error while reading file: %s: %s\n", argv[i], strerror(errno));
return 1;
}
if (!feof(fd))
{
fprintf(stderr, "not end of file?: %s: %s\n", argv[i], strerror(errno));
return 1;
}
foundcollision = SHA1DCFinal(hash2,&ctx2);
for (j = 0; j < 20; ++j)
{
sprintf(buffer+(j*2), "%02x", hash2[j]);
}
buffer[20*2] = 0;
if (foundcollision)
{
printf("%s *coll* %s\n", buffer, argv[i]);
}
else
{
printf("%s %s\n", buffer, argv[i]);
}
fclose(fd);
}
return 0;
}
#ifdef _MSC_VER
#pragma warning(disable : 4710 ) /* 4710 -- compiler complains about printf,sprintf not being inlined. */
#endif
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