|
|
|
@ -16,113 +16,129 @@
|
|
|
|
|
|
|
|
|
|
#define SHA_SUM_LENGTH (SHA_DIGEST_LENGTH + SHA_DIGEST_LENGTH + 1) |
|
|
|
|
|
|
|
|
|
void picProto(void *picAddr, size_t picSize, void *clonePtr) { |
|
|
|
|
void (*cloneFunc)(void *, size_t, char *) = clonePtr; |
|
|
|
|
cloneFunc(picAddr, picSize); |
|
|
|
|
return; |
|
|
|
|
void picProto(void *picAddr, size_t picSize, void *clonePtr) |
|
|
|
|
{ |
|
|
|
|
void (*cloneFunc)(void *, size_t) = clonePtr; |
|
|
|
|
cloneFunc(picAddr, picSize); |
|
|
|
|
return; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
void clone(void *picAddr, size_t picSize, char *checksum) { |
|
|
|
|
auto retVal = EX_SOFTWARE; |
|
|
|
|
void clone(void *picAddr, size_t picSize) |
|
|
|
|
{ |
|
|
|
|
auto retVal = EX_SOFTWARE; |
|
|
|
|
|
|
|
|
|
struct drand48_data drand_data; |
|
|
|
|
srand48_r(time(NULL), &drand_data); |
|
|
|
|
long int randVal; |
|
|
|
|
lrand48_r(&drand_data, &randVal); |
|
|
|
|
struct drand48_data drand_data; |
|
|
|
|
srand48_r(time(NULL), &drand_data); |
|
|
|
|
long int randVal; |
|
|
|
|
lrand48_r(&drand_data, &randVal); |
|
|
|
|
|
|
|
|
|
unsigned int picOffset = (randVal % (picSize + 1)); |
|
|
|
|
unsigned char picFlip = ((char *)picAddr)[picOffset] & (randVal % 2); |
|
|
|
|
unsigned int picOffset = (randVal % (picSize + 1)); |
|
|
|
|
unsigned char picFlip = ((char *)picAddr)[picOffset] & (randVal % 2); |
|
|
|
|
|
|
|
|
|
printf("%x\t%x\n", picOffset, picFlip); |
|
|
|
|
printf("%x\t%x\n", picOffset, picFlip); |
|
|
|
|
|
|
|
|
|
((char *)picAddr)[picOffset] = picFlip; |
|
|
|
|
((char *)picAddr)[picOffset] = picFlip; |
|
|
|
|
|
|
|
|
|
unsigned char digest[SHA_DIGEST_LENGTH]; |
|
|
|
|
SHA1(picAddr, picSize, digest); |
|
|
|
|
unsigned char digest[SHA_DIGEST_LENGTH]; |
|
|
|
|
SHA1(picAddr, picSize, digest); |
|
|
|
|
|
|
|
|
|
for (int iter = 0; iter < SHA_DIGEST_LENGTH; iter++) { |
|
|
|
|
sprintf(&checksum[iter * 2], "%02x", digest[iter]); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
FILE *fileOutHandle = fopen(checksum, "w+"); |
|
|
|
|
if (NULL == fileOutHandle) { |
|
|
|
|
retVal = errno; |
|
|
|
|
goto CLONE_CLEANUP; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
retVal = fwrite(picAddr, 1, picSize, fileOutHandle); |
|
|
|
|
if (retVal != picSize) { |
|
|
|
|
retVal = errno; |
|
|
|
|
goto CLONE_CLEANUP; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
retVal = EX_OK; |
|
|
|
|
CLONE_CLEANUP: |
|
|
|
|
if (fileOutHandle) { |
|
|
|
|
fclose(fileOutHandle); |
|
|
|
|
} |
|
|
|
|
return; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
int main(int argc, const char **argv) { |
|
|
|
|
auto retVal = EX_SOFTWARE; |
|
|
|
|
char fileInPath[SHA_SUM_LENGTH]; |
|
|
|
|
char checksum[SHA_SUM_LENGTH]; |
|
|
|
|
|
|
|
|
|
strncpy(fileInPath, argv[1], SHA_SUM_LENGTH); |
|
|
|
|
|
|
|
|
|
while (1) { |
|
|
|
|
|
|
|
|
|
FILE *fileInHandle = fopen(fileInPath, "rb"); |
|
|
|
|
if (NULL == fileInHandle) { |
|
|
|
|
retVal = errno; |
|
|
|
|
goto MAIN_CLEANUP; |
|
|
|
|
for (int iter = 0; iter < SHA_DIGEST_LENGTH; iter++) |
|
|
|
|
{ |
|
|
|
|
sprintf(&checksum[iter * 2], "%02x", digest[iter]); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
struct stat picStat; |
|
|
|
|
retVal = fstat(fileno(fileInHandle), &picStat); |
|
|
|
|
if (-1 == retVal) { |
|
|
|
|
retVal = errno; |
|
|
|
|
goto MAIN_CLEANUP; |
|
|
|
|
FILE *fileOutHandle = fopen(checksum, "w+"); |
|
|
|
|
if (NULL == fileOutHandle) |
|
|
|
|
{ |
|
|
|
|
retVal = errno; |
|
|
|
|
goto CLONE_CLEANUP; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
void *picBuffer = mmap(NULL, picStat.st_size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE, -1, 0); |
|
|
|
|
if (MAP_FAILED == picBuffer) { |
|
|
|
|
retVal = errno; |
|
|
|
|
goto MAIN_CLEANUP; |
|
|
|
|
retVal = fwrite(picAddr, 1, picSize, fileOutHandle); |
|
|
|
|
if (retVal != picSize) |
|
|
|
|
{ |
|
|
|
|
retVal = errno; |
|
|
|
|
goto CLONE_CLEANUP; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
retVal = fread(picBuffer, 1, picStat.st_size, fileInHandle); |
|
|
|
|
if (retVal != picStat.st_size) { |
|
|
|
|
retVal = errno; |
|
|
|
|
goto MAIN_CLEANUP; |
|
|
|
|
retVal = EX_OK; |
|
|
|
|
CLONE_CLEANUP: |
|
|
|
|
if (fileOutHandle) |
|
|
|
|
{ |
|
|
|
|
fclose(fileOutHandle); |
|
|
|
|
} |
|
|
|
|
return; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
if (NULL != fileInHandle) { |
|
|
|
|
fclose(fileInHandle); |
|
|
|
|
fileInHandle = NULL; |
|
|
|
|
int main(int argc, const char **argv) |
|
|
|
|
{ |
|
|
|
|
auto retVal = EX_SOFTWARE; |
|
|
|
|
char fileInPath[SHA_SUM_LENGTH]; |
|
|
|
|
char checksum[SHA_SUM_LENGTH]; |
|
|
|
|
FILE *fileInHandle = NULL; |
|
|
|
|
struct stat picStat; |
|
|
|
|
void *picBuffer = NULL; |
|
|
|
|
|
|
|
|
|
strncpy(fileInPath, argv[1], SHA_SUM_LENGTH); |
|
|
|
|
|
|
|
|
|
while (1) |
|
|
|
|
{ |
|
|
|
|
|
|
|
|
|
fileInHandle = fopen(fileInPath, "rb"); |
|
|
|
|
if (NULL == fileInHandle) |
|
|
|
|
{ |
|
|
|
|
retVal = errno; |
|
|
|
|
goto MAIN_CLEANUP; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
retVal = fstat(fileno(fileInHandle), &picStat); |
|
|
|
|
if (-1 == retVal) |
|
|
|
|
{ |
|
|
|
|
retVal = errno; |
|
|
|
|
goto MAIN_CLEANUP; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
auto mmapFlags = (PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE); |
|
|
|
|
picBuffer = mmap(NULL, picStat.st_size, mmapFlags, -1, 0); |
|
|
|
|
if (MAP_FAILED == picBuffer) |
|
|
|
|
{ |
|
|
|
|
retVal = errno; |
|
|
|
|
goto MAIN_CLEANUP; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
retVal = fread(picBuffer, 1, picStat.st_size, fileInHandle); |
|
|
|
|
if (retVal != picStat.st_size) |
|
|
|
|
{ |
|
|
|
|
retVal = errno; |
|
|
|
|
goto MAIN_CLEANUP; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
if (NULL != fileInHandle) |
|
|
|
|
{ |
|
|
|
|
fclose(fileInHandle); |
|
|
|
|
fileInHandle = NULL; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
memset(checksum, 0, SHA_SUM_LENGTH); |
|
|
|
|
void (*cloneFunc)(void *, size_t) = clone; |
|
|
|
|
void (*picFunc)(void *, size_t, void *) = picBuffer; |
|
|
|
|
|
|
|
|
|
picFunc(picBuffer, picStat.st_size, cloneFunc); |
|
|
|
|
|
|
|
|
|
strncpy(fileInPath, checksum, SHA_SUM_LENGTH); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
memset(checksum, 0, SHA_SUM_LENGTH); |
|
|
|
|
void (*cloneFunc)(void *, size_t, char *) = clone; |
|
|
|
|
void (*picFunc)(void *, size_t, void *, char *) = picBuffer; |
|
|
|
|
|
|
|
|
|
signal(SIGSEGV, magic_handler); |
|
|
|
|
|
|
|
|
|
picFunc(picBuffer, picStat.st_size, cloneFunc, checksum); |
|
|
|
|
|
|
|
|
|
strncpy(fileInPath, checksum, SHA_SUM_LENGTH); |
|
|
|
|
|
|
|
|
|
retVal = EX_OK; |
|
|
|
|
MAIN_CLEANUP: |
|
|
|
|
if (NULL != picBuffer) { |
|
|
|
|
munmap(picBuffer, picStat.st_size); |
|
|
|
|
MAIN_CLEANUP: |
|
|
|
|
if (NULL != picBuffer) |
|
|
|
|
{ |
|
|
|
|
munmap(picBuffer, picStat.st_size); |
|
|
|
|
} |
|
|
|
|
if (NULL != fileInHandle) { |
|
|
|
|
fclose(fileInHandle); |
|
|
|
|
fileInHandle = NULL; |
|
|
|
|
if (NULL != fileInHandle) |
|
|
|
|
{ |
|
|
|
|
fclose(fileInHandle); |
|
|
|
|
fileInHandle = NULL; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
return retVal; |
|
|
|
|
} |
|
|
|
|
return retVal; |
|
|
|
|
} |