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xxhsum.c
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xxhsum.c
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/*
* xxhsum - Command line interface for xxhash algorithms
* Copyright (C) Yann Collet 2012-2016
*
* GPL v2 License
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* You can contact the author at :
* - xxHash homepage : http://www.xxhash.com
* - xxHash source repository : https://github.com/Cyan4973/xxHash
*/
/* xxhsum :
* Provides hash value of a file content, or a list of files, or stdin
* Display convention is Big Endian, for both 32 and 64 bits algorithms
*/
#ifndef XXHASH_C_2097394837
#define XXHASH_C_2097394837
/* ************************************
* Compiler Options
**************************************/
/* MS Visual */
#if defined(_MSC_VER) || defined(_WIN32)
# define _CRT_SECURE_NO_WARNINGS /* removes visual warnings */
#endif
/* Under Linux at least, pull in the *64 commands */
#ifndef _LARGEFILE64_SOURCE
# define _LARGEFILE64_SOURCE
#endif
/* ************************************
* Includes
**************************************/
#include <stdlib.h> /* malloc, calloc, free, exit */
#include <stdio.h> /* fprintf, fopen, ftello64, fread, stdin, stdout; when present : _fileno */
#include <string.h> /* strcmp */
#include <sys/types.h> /* stat64 */
#include <sys/stat.h> /* stat64 */
#include <time.h> /* clock_t, clock, CLOCKS_PER_SEC */
#define XXH_STATIC_LINKING_ONLY /* *_state_t */
#include "xxhash.h"
/*-************************************
* OS-Specific Includes
**************************************/
#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__)
# include <fcntl.h> /* _O_BINARY */
# include <io.h> /* _setmode, _isatty */
# ifdef __MINGW32__
int _fileno(FILE *stream); /* MINGW somehow forgets to include this windows declaration into <stdio.h> */
# endif
# define SET_BINARY_MODE(file) _setmode(_fileno(file), _O_BINARY)
# define IS_CONSOLE(stdStream) _isatty(_fileno(stdStream))
#else
# include <unistd.h> /* isatty, STDIN_FILENO */
# define SET_BINARY_MODE(file)
# define IS_CONSOLE(stdStream) isatty(STDIN_FILENO)
#endif
#if !defined(S_ISREG)
# define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
#endif
/* ************************************
* Basic Types
**************************************/
#ifndef MEM_MODULE
# define MEM_MODULE
# if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 */
# include <stdint.h>
typedef uint8_t BYTE;
typedef uint16_t U16;
typedef uint32_t U32;
typedef int32_t S32;
typedef uint64_t U64;
# else
typedef unsigned char BYTE;
typedef unsigned short U16;
typedef unsigned int U32;
typedef signed int S32;
typedef unsigned long long U64;
# endif
#endif
static unsigned BMK_isLittleEndian(void)
{
const union { U32 u; BYTE c[4]; } one = { 1 }; /* don't use static : performance detrimental */
return one.c[0];
}
/* *************************************
* Constants
***************************************/
#define LIB_VERSION XXH_VERSION_MAJOR.XXH_VERSION_MINOR.XXH_VERSION_RELEASE
#define QUOTE(str) #str
#define EXPAND_AND_QUOTE(str) QUOTE(str)
#define PROGRAM_VERSION EXPAND_AND_QUOTE(LIB_VERSION)
static const int g_nbBits = (int)(sizeof(void*)*8);
static const char g_lename[] = "little endian";
static const char g_bename[] = "big endian";
#define ENDIAN_NAME (BMK_isLittleEndian() ? g_lename : g_bename)
static const char author[] = "Yann Collet";
#define WELCOME_MESSAGE(exename) "%s %s (%i-bits %s), by %s \n", \
exename, PROGRAM_VERSION, g_nbBits, ENDIAN_NAME, author
#define NBLOOPS 3 /* Default number of benchmark iterations */
#define TIMELOOP_S 1
#define TIMELOOP (TIMELOOP_S * CLOCKS_PER_SEC) /* Minimum timing per iteration */
#define XXHSUM32_DEFAULT_SEED 0 /* Default seed for algo_xxh32 */
#define XXHSUM64_DEFAULT_SEED 0 /* Default seed for algo_xxh64 */
#define KB *( 1<<10)
#define MB *( 1<<20)
#define GB *(1U<<30)
#define MAX_MEM (2 GB - 64 MB)
static const char stdinName[] = "-";
typedef enum { algo_xxh32, algo_xxh64 } algoType;
static const algoType g_defaultAlgo = algo_xxh64; /* required within main() & usage() */
/* <16 hex char> <SPC> <SPC> <filename> <'\0'>
* '4096' is typical Linux PATH_MAX configuration. */
#define DEFAULT_LINE_LENGTH (sizeof(XXH64_hash_t) * 2 + 2 + 4096 + 1)
/* Maximum acceptable line length. */
#define MAX_LINE_LENGTH (32 KB)
/* ************************************
* Display macros
**************************************/
#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
#define DISPLAYRESULT(...) fprintf(stdout, __VA_ARGS__)
#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) DISPLAY(__VA_ARGS__);
static U32 g_displayLevel = 1;
/* ************************************
* Local variables
**************************************/
static size_t g_sampleSize = 100 KB;
static U32 g_nbIterations = NBLOOPS;
/* ************************************
* Benchmark Functions
**************************************/
static clock_t BMK_clockSpan( clock_t start )
{
return clock() - start; /* works even if overflow; Typical max span ~ 30 mn */
}
static size_t BMK_findMaxMem(U64 requiredMem)
{
size_t const step = 64 MB;
void* testmem = NULL;
requiredMem = (((requiredMem >> 26) + 1) << 26);
requiredMem += 2*step;
if (requiredMem > MAX_MEM) requiredMem = MAX_MEM;
while (!testmem) {
if (requiredMem > step) requiredMem -= step;
else requiredMem >>= 1;
testmem = malloc ((size_t)requiredMem);
}
free (testmem);
/* keep some space available */
if (requiredMem > step) requiredMem -= step;
else requiredMem >>= 1;
return (size_t)requiredMem;
}
static U64 BMK_GetFileSize(const char* infilename)
{
int r;
#if defined(_MSC_VER)
struct _stat64 statbuf;
r = _stat64(infilename, &statbuf);
#else
struct stat statbuf;
r = stat(infilename, &statbuf);
#endif
if (r || !S_ISREG(statbuf.st_mode)) return 0; /* No good... */
return (U64)statbuf.st_size;
}
typedef U32 (*hashFunction)(const void* buffer, size_t bufferSize, U32 seed);
static U32 localXXH32(const void* buffer, size_t bufferSize, U32 seed) { return XXH32(buffer, bufferSize, seed); }
static U32 localXXH64(const void* buffer, size_t bufferSize, U32 seed) { return (U32)XXH64(buffer, bufferSize, seed); }
static void BMK_benchHash(hashFunction h, const char* hName, const void* buffer, size_t bufferSize)
{
static const U32 nbh_perloop = 100;
U32 iterationNb;
double fastestH = 100000000.;
DISPLAY("\r%79s\r", ""); /* Clean display line */
if (g_nbIterations<1) g_nbIterations=1;
for (iterationNb = 1; iterationNb <= g_nbIterations; iterationNb++) {
U32 nbHashes = 0, r=0;
clock_t cStart;
DISPLAY("%1i-%-17.17s : %10u ->\r", iterationNb, hName, (U32)bufferSize);
cStart = clock();
while (clock() == cStart); /* starts clock() at its exact beginning */
cStart = clock();
while (BMK_clockSpan(cStart) < TIMELOOP) {
U32 i;
for (i=0; i<nbh_perloop; i++)
r += h(buffer, bufferSize, i);
nbHashes += nbh_perloop;
}
if (r==0) DISPLAY(".\r"); /* need to do something with r to avoid compiler "optimizing" away hash function */
{ double const timeS = ((double)BMK_clockSpan(cStart) / CLOCKS_PER_SEC) / nbHashes;
if (timeS < fastestH) fastestH = timeS;
DISPLAY("%1i-%-17.17s : %10u -> %7.1f MB/s\r",
iterationNb, hName, (U32)bufferSize, ((double)bufferSize / (1<<20)) / fastestH );
}
}
DISPLAY("%-19.19s : %10u -> %7.1f MB/s \n", hName, (U32)bufferSize, ((double)bufferSize / (1<<20)) / fastestH);
}
/* Note : buffer is supposed malloc'ed, hence aligned */
static void BMK_benchMem(const void* buffer, size_t bufferSize)
{
/* XXH32 bench */
BMK_benchHash(localXXH32, "XXH32", buffer, bufferSize);
/* Bench XXH32 on Unaligned input */
BMK_benchHash(localXXH32, "XXH32 unaligned", ((const char*)buffer)+1, bufferSize);
/* Bench XXH64 */
BMK_benchHash(localXXH64, "XXH64", buffer, bufferSize);
/* Bench XXH64 on Unaligned input */
BMK_benchHash(localXXH64, "XXH64 unaligned", ((const char*)buffer)+3, bufferSize);
}
static size_t BMK_selectBenchedSize(const char* fileName)
{ U64 const inFileSize = BMK_GetFileSize(fileName);
size_t benchedSize = (size_t) BMK_findMaxMem(inFileSize);
if ((U64)benchedSize > inFileSize) benchedSize = (size_t)inFileSize;
if (benchedSize < inFileSize) {
DISPLAY("Not enough memory for '%s' full size; testing %i MB only...\n", fileName, (int)(benchedSize>>20));
}
return benchedSize;
}
static int BMK_benchFiles(const char** fileNamesTable, int nbFiles)
{
int fileIdx;
for (fileIdx=0; fileIdx<nbFiles; fileIdx++) {
const char* const inFileName = fileNamesTable[fileIdx];
FILE* const inFile = fopen( inFileName, "rb" );
size_t const benchedSize = BMK_selectBenchedSize(inFileName);
char* const buffer = (char*)calloc(benchedSize+16+3, 1);
void* const alignedBuffer = (buffer+15) - (((size_t)(buffer+15)) & 0xF); /* align on next 16 bytes */
/* Checks */
if ((inFile==NULL) || (inFileName==NULL)) {
DISPLAY( "Pb opening %s\n", inFileName);
free(buffer);
return 11;
}
if(!buffer) {
DISPLAY("\nError: not enough memory!\n");
fclose(inFile);
return 12;
}
/* Fill input buffer */
DISPLAY("\rLoading %s... \n", inFileName);
{ size_t const readSize = fread(alignedBuffer, 1, benchedSize, inFile);
fclose(inFile);
if(readSize != benchedSize) {
DISPLAY("\nError: problem reading file '%s' !! \n", inFileName);
free(buffer);
return 13;
} }
/* bench */
BMK_benchMem(alignedBuffer, benchedSize);
free(buffer);
}
return 0;
}
static int BMK_benchInternal(void)
{
size_t const benchedSize = g_sampleSize;
void* const buffer = calloc(benchedSize+3, 1);
if(!buffer) {
DISPLAY("\nError: not enough memory!\n");
return 12;
}
/* bench */
DISPLAY("\rSample of %u KB... \n", (U32)(benchedSize >> 10));
BMK_benchMem(buffer, benchedSize);
free(buffer);
return 0;
}
static void BMK_checkResult(U32 r1, U32 r2)
{
static int nbTests = 1;
if (r1==r2) DISPLAY("\rTest%3i : %08X == %08X ok ", nbTests, r1, r2);
else {
DISPLAY("\rERROR : Test%3i : %08X <> %08X !!!!! \n", nbTests, r1, r2);
exit(1);
}
nbTests++;
}
static void BMK_checkResult64(U64 r1, U64 r2)
{
static int nbTests = 1;
if (r1!=r2) {
DISPLAY("\rERROR : Test%3i : 64-bit values non equals !!!!! \n", nbTests);
DISPLAY("\r %08X%08X != %08X%08X \n", (U32)(r1>>32), (U32)r1, (U32)(r2>>32), (U32)r2);
exit(1);
}
nbTests++;
}
static void BMK_testSequence64(void* sentence, size_t len, U64 seed, U64 Nresult)
{
XXH64_state_t state;
U64 Dresult;
size_t pos;
Dresult = XXH64(sentence, len, seed);
BMK_checkResult64(Dresult, Nresult);
XXH64_reset(&state, seed);
XXH64_update(&state, sentence, len);
Dresult = XXH64_digest(&state);
BMK_checkResult64(Dresult, Nresult);
XXH64_reset(&state, seed);
for (pos=0; pos<len; pos++) XXH64_update(&state, ((char*)sentence)+pos, 1);
Dresult = XXH64_digest(&state);
BMK_checkResult64(Dresult, Nresult);
}
static void BMK_testSequence(const void* sequence, size_t len, U32 seed, U32 Nresult)
{
XXH32_state_t state;
U32 Dresult;
size_t pos;
Dresult = XXH32(sequence, len, seed);
BMK_checkResult(Dresult, Nresult);
XXH32_reset(&state, seed);
XXH32_update(&state, sequence, len);
Dresult = XXH32_digest(&state);
BMK_checkResult(Dresult, Nresult);
XXH32_reset(&state, seed);
for (pos=0; pos<len; pos++) XXH32_update(&state, ((const char*)sequence)+pos, 1);
Dresult = XXH32_digest(&state);
BMK_checkResult(Dresult, Nresult);
}
#define SANITY_BUFFER_SIZE 101
static void BMK_sanityCheck(void)
{
static const U32 prime = 2654435761U;
BYTE sanityBuffer[SANITY_BUFFER_SIZE];
U32 byteGen = prime;
int i;
for (i=0; i<SANITY_BUFFER_SIZE; i++) {
sanityBuffer[i] = (BYTE)(byteGen>>24);
byteGen *= byteGen;
}
BMK_testSequence(NULL, 0, 0, 0x02CC5D05);
BMK_testSequence(NULL, 0, prime, 0x36B78AE7);
BMK_testSequence(sanityBuffer, 1, 0, 0xB85CBEE5);
BMK_testSequence(sanityBuffer, 1, prime, 0xD5845D64);
BMK_testSequence(sanityBuffer, 14, 0, 0xE5AA0AB4);
BMK_testSequence(sanityBuffer, 14, prime, 0x4481951D);
BMK_testSequence(sanityBuffer, SANITY_BUFFER_SIZE, 0, 0x1F1AA412);
BMK_testSequence(sanityBuffer, SANITY_BUFFER_SIZE, prime, 0x498EC8E2);
BMK_testSequence64(NULL , 0, 0, 0xEF46DB3751D8E999ULL);
BMK_testSequence64(NULL , 0, prime, 0xAC75FDA2929B17EFULL);
BMK_testSequence64(sanityBuffer, 1, 0, 0x4FCE394CC88952D8ULL);
BMK_testSequence64(sanityBuffer, 1, prime, 0x739840CB819FA723ULL);
BMK_testSequence64(sanityBuffer, 14, 0, 0xCFFA8DB881BC3A3DULL);
BMK_testSequence64(sanityBuffer, 14, prime, 0x5B9611585EFCC9CBULL);
BMK_testSequence64(sanityBuffer, SANITY_BUFFER_SIZE, 0, 0x0EAB543384F878ADULL);
BMK_testSequence64(sanityBuffer, SANITY_BUFFER_SIZE, prime, 0xCAA65939306F1E21ULL);
DISPLAY("\r%79s\r", ""); /* Clean display line */
DISPLAYLEVEL(2, "Sanity check -- all tests ok\n");
}
/* ********************************************************
* File Hashing
**********************************************************/
static void BMK_display_LittleEndian(const void* ptr, size_t length)
{
const BYTE* p = (const BYTE*)ptr;
size_t idx;
for (idx=length-1; idx<length; idx--) /* intentional underflow to negative to detect end */
DISPLAYRESULT("%02x", p[idx]);
}
static void BMK_display_BigEndian(const void* ptr, size_t length)
{
const BYTE* p = (const BYTE*)ptr;
size_t idx;
for (idx=0; idx<length; idx++)
DISPLAYRESULT("%02x", p[idx]);
}
static void BMK_hashStream(void* xxhHashValue, const algoType hashType, FILE* inFile, void* buffer, size_t blockSize)
{
XXH64_state_t state64;
XXH32_state_t state32;
size_t readSize;
/* Init */
XXH32_reset(&state32, XXHSUM32_DEFAULT_SEED);
XXH64_reset(&state64, XXHSUM64_DEFAULT_SEED);
/* Load file & update hash */
readSize = 1;
while (readSize) {
readSize = fread(buffer, 1, blockSize, inFile);
switch(hashType)
{
case algo_xxh32:
XXH32_update(&state32, buffer, readSize);
break;
case algo_xxh64:
XXH64_update(&state64, buffer, readSize);
break;
default:
break;
}
}
switch(hashType)
{
case algo_xxh32:
{ U32 const h32 = XXH32_digest(&state32);
memcpy(xxhHashValue, &h32, sizeof(h32));
break;
}
case algo_xxh64:
{ U64 const h64 = XXH64_digest(&state64);
memcpy(xxhHashValue, &h64, sizeof(h64));
break;
}
default:
break;
}
}
typedef enum { big_endian, little_endian} endianess;
static int BMK_hash(const char* fileName,
const algoType hashType,
const endianess displayEndianess)
{
FILE* inFile;
size_t const blockSize = 64 KB;
void* buffer;
U32 h32 = 0;
U64 h64 = 0;
/* Check file existence */
if (fileName == stdinName) {
inFile = stdin;
SET_BINARY_MODE(stdin);
}
else
inFile = fopen( fileName, "rb" );
if (inFile==NULL) {
DISPLAY( "Pb opening %s\n", fileName);
return 1;
}
/* Memory allocation & restrictions */
buffer = malloc(blockSize);
if(!buffer) {
DISPLAY("\nError: not enough memory!\n");
fclose(inFile);
return 1;
}
/* loading notification */
{ const size_t fileNameSize = strlen(fileName);
const char* const fileNameEnd = fileName + fileNameSize;
const size_t maxInfoFilenameSize = fileNameSize > 30 ? 30 : fileNameSize;
size_t infoFilenameSize = 1;
while ( (infoFilenameSize < maxInfoFilenameSize)
&&(fileNameEnd[-1-infoFilenameSize] != '/')
&&(fileNameEnd[-1-infoFilenameSize] != '\\') )
infoFilenameSize++;
DISPLAY("\rLoading %s... \r", fileNameEnd - infoFilenameSize);
/* Load file & update hash */
switch(hashType)
{
case algo_xxh32:
BMK_hashStream(&h32, algo_xxh32, inFile, buffer, blockSize);
break;
case algo_xxh64:
BMK_hashStream(&h64, algo_xxh64, inFile, buffer, blockSize);
break;
default:
break;
}
fclose(inFile);
free(buffer);
DISPLAY("%s \r", fileNameEnd - infoFilenameSize); /* erase line */
}
/* display Hash */
switch(hashType)
{
case algo_xxh32:
{ XXH32_canonical_t hcbe32;
XXH32_canonicalFromHash(&hcbe32, h32);
displayEndianess==big_endian ?
BMK_display_BigEndian(&hcbe32, sizeof(hcbe32)) : BMK_display_LittleEndian(&hcbe32, sizeof(hcbe32));
DISPLAYRESULT(" %s\n", fileName);
break;
}
case algo_xxh64:
{ XXH64_canonical_t hcbe64;
XXH64_canonicalFromHash(&hcbe64, h64);
displayEndianess==big_endian ?
BMK_display_BigEndian(&hcbe64, sizeof(hcbe64)) : BMK_display_LittleEndian(&hcbe64, sizeof(hcbe64));
DISPLAYRESULT(" %s\n", fileName);
break;
}
default:
break;
}
return 0;
}
static int BMK_hashFiles(const char** fnList, int fnTotal,
algoType hashType, endianess displayEndianess)
{
int fnNb;
int result = 0;
if (fnTotal==0)
return BMK_hash(stdinName, hashType, displayEndianess);
for (fnNb=0; fnNb<fnTotal; fnNb++)
result += BMK_hash(fnList[fnNb], hashType, displayEndianess);
DISPLAY("\r%70s\r", "");
return result;
}
typedef enum {
GetLine_ok,
GetLine_eof,
GetLine_exceedMaxLineLength,
GetLine_outOfMemory,
} GetLineResult;
typedef enum {
CanonicalFromString_ok,
CanonicalFromString_invalidFormat,
} CanonicalFromStringResult;
typedef enum {
ParseLine_ok,
ParseLine_invalidFormat,
} ParseLineResult;
typedef enum {
LineStatus_hashOk,
LineStatus_hashFailed,
LineStatus_failedToOpen,
} LineStatus;
typedef union {
XXH32_canonical_t xxh32;
XXH64_canonical_t xxh64;
} Canonical;
typedef struct {
Canonical canonical;
const char* filename;
int xxhBits; /* canonical type : 32:xxh32, 64:xxh64 */
} ParsedLine;
typedef struct {
unsigned long nProperlyFormattedLines;
unsigned long nImproperlyFormattedLines;
unsigned long nMismatchedChecksums;
unsigned long nOpenOrReadFailures;
unsigned long nMixedFormatLines;
int xxhBits;
int quit;
} ParseFileReport;
typedef struct {
const char* inFileName;
FILE* inFile;
int lineMax;
char* lineBuf;
size_t blockSize;
char* blockBuf;
int strictMode;
int statusOnly;
int warn;
int quiet;
ParseFileReport report;
} ParseFileArg;
/* Read line from stream.
Returns GetLine_ok, if it reads line successfully.
Returns GetLine_eof, if stream reaches EOF.
Returns GetLine_exceedMaxLineLength, if line length is longer than MAX_LINE_LENGTH.
Returns GetLine_outOfMemory, if line buffer memory allocation failed.
*/
static GetLineResult getLine(char** lineBuf, int* lineMax, FILE* inFile)
{
GetLineResult result = GetLine_ok;
int len = 0;
if ((*lineBuf == NULL) || (*lineMax<1)) {
free(*lineBuf); /* in case it's != NULL */
*lineMax = 0;
*lineBuf = (char*)malloc(DEFAULT_LINE_LENGTH);
if(*lineBuf == NULL) return GetLine_outOfMemory;
*lineMax = DEFAULT_LINE_LENGTH;
}
for (;;) {
const int c = fgetc(inFile);
if (c == EOF) {
/* If we meet EOF before first character, returns GetLine_eof,
* otherwise GetLine_ok.
*/
if (len == 0) result = GetLine_eof;
break;
}
/* Make enough space for len+1 (for final NUL) bytes. */
if (len+1 >= *lineMax) {
char* newLineBuf = NULL;
int newBufSize = *lineMax;
newBufSize += (newBufSize/2) + 1; /* x 1.5 */
if (newBufSize > MAX_LINE_LENGTH) newBufSize = MAX_LINE_LENGTH;
if (len+1 >= newBufSize) return GetLine_exceedMaxLineLength;
newLineBuf = (char*) realloc(*lineBuf, newBufSize);
if (newLineBuf == NULL) return GetLine_outOfMemory;
*lineBuf = newLineBuf;
*lineMax = newBufSize;
}
if (c == '\n') break;
(*lineBuf)[len++] = (char) c;
}
(*lineBuf)[len] = '\0';
return result;
}
/* Converts one hexadecimal character to integer.
* Returns -1, if given character is not hexadecimal.
*/
static int charToHex(char c)
{
int result = -1;
if (c >= '0' && c <= '9') {
result = (int) (c - '0');
} else if (c >= 'A' && c <= 'F') {
result = (int) (c - 'A') + 0x0a;
} else if (c >= 'a' && c <= 'f') {
result = (int) (c - 'a') + 0x0a;
}
return result;
}
/* Converts XXH32 canonical hexadecimal string hashStr to big endian unsigned char array dst.
* Returns CANONICAL_FROM_STRING_INVALID_FORMAT, if hashStr is not well formatted.
* Returns CANONICAL_FROM_STRING_OK, if hashStr is parsed successfully.
*/
static CanonicalFromStringResult canonicalFromString(unsigned char* dst,
size_t dstSize,
const char* hashStr)
{
size_t i;
for (i = 0; i < dstSize; ++i) {
int h0, h1;
h0 = charToHex(hashStr[i*2 + 0]);
if (h0 < 0) return CanonicalFromString_invalidFormat;
h1 = charToHex(hashStr[i*2 + 1]);
if (h1 < 0) return CanonicalFromString_invalidFormat;
dst[i] = (unsigned char) ((h0 << 4) | h1);
}
return CanonicalFromString_ok;
}
/* Parse single line of xxHash checksum file.
* Returns PARSE_LINE_ERROR_INVALID_FORMAT, if line is not well formatted.
* Returns PARSE_LINE_OK if line is parsed successfully.
* And members of parseLine will be filled by parsed values.
*
* - line must be ended with '\0'.
* - Since parsedLine.filename will point within given argument `line`,
* users must keep `line`s content during they are using parsedLine.
*
* Given xxHash checksum line should have the following format:
*
* <8 or 16 hexadecimal char> <space> <space> <filename...> <'\0'>
*/
static ParseLineResult parseLine(ParsedLine* parsedLine, const char* line)
{
const char* const firstSpace = strchr(line, ' ');
const char* const secondSpace = firstSpace + 1;
parsedLine->filename = NULL;
parsedLine->xxhBits = 0;
if (firstSpace == NULL || *secondSpace != ' ') return ParseLine_invalidFormat;
switch (firstSpace - line)
{
case 8:
{ XXH32_canonical_t* xxh32c = &parsedLine->canonical.xxh32;
if (canonicalFromString(xxh32c->digest, sizeof(xxh32c->digest), line)
!= CanonicalFromString_ok) {
return ParseLine_invalidFormat;
}
parsedLine->xxhBits = 32;
break;
}
case 16:
{ XXH64_canonical_t* xxh64c = &parsedLine->canonical.xxh64;
if (canonicalFromString(xxh64c->digest, sizeof(xxh64c->digest), line)
!= CanonicalFromString_ok) {
return ParseLine_invalidFormat;
}
parsedLine->xxhBits = 64;
break;
}
default:
return ParseLine_invalidFormat;
break;
}
parsedLine->filename = secondSpace + 1;
return ParseLine_ok;
}
/*! Parse xxHash checksum file.
*/
static void parseFile1(ParseFileArg* parseFileArg)
{
const char* const inFileName = parseFileArg->inFileName;
ParseFileReport* const report = &parseFileArg->report;
unsigned long lineNumber = 0;
memset(report, 0, sizeof(*report));
while (!report->quit) {
FILE* fp = NULL;
LineStatus lineStatus = LineStatus_hashFailed;
GetLineResult getLineResult;
ParsedLine parsedLine;
memset(&parsedLine, 0, sizeof(parsedLine));
lineNumber++;
if (lineNumber == 0) {
/* This is unlikely happen, but md5sum.c has this
* error check. */
DISPLAY("%s : too many checksum lines\n", inFileName);
report->quit = 1;
break;
}
getLineResult = getLine(&parseFileArg->lineBuf, &parseFileArg->lineMax,
parseFileArg->inFile);
if (getLineResult != GetLine_ok) {
if (getLineResult == GetLine_eof) break;
switch (getLineResult)
{
case GetLine_ok:
case GetLine_eof:
/* These cases never happen. See above getLineResult related "if"s.
They exist just for make gcc's -Wswitch-enum happy. */
break;
default:
DISPLAY("%s : %lu: unknown error\n", inFileName, lineNumber);
break;
case GetLine_exceedMaxLineLength:
DISPLAY("%s : %lu: too long line\n", inFileName, lineNumber);
break;
case GetLine_outOfMemory:
DISPLAY("%s : %lu: out of memory\n", inFileName, lineNumber);
break;
}
report->quit = 1;
break;
}
if (parseLine(&parsedLine, parseFileArg->lineBuf) != ParseLine_ok) {
report->nImproperlyFormattedLines++;
if (parseFileArg->warn) {
DISPLAY("%s : %lu: improperly formatted XXHASH checksum line\n"
, inFileName, lineNumber);
}
continue;
}
if (report->xxhBits != 0 && report->xxhBits != parsedLine.xxhBits) {
/* Don't accept xxh32/xxh64 mixed file */
report->nImproperlyFormattedLines++;
report->nMixedFormatLines++;
if (parseFileArg->warn) {
DISPLAY("%s : %lu: improperly formatted XXHASH checksum line (XXH32/64)\n"
, inFileName, lineNumber);
}
continue;
}
report->nProperlyFormattedLines++;
if (report->xxhBits == 0) {
report->xxhBits = parsedLine.xxhBits;
}
fp = fopen(parsedLine.filename, "rb");
if (fp == NULL) {
lineStatus = LineStatus_failedToOpen;
} else {
lineStatus = LineStatus_hashFailed;
switch (parsedLine.xxhBits)
{
case 32:
{ XXH32_hash_t xxh;
BMK_hashStream(&xxh, algo_xxh32, fp, parseFileArg->blockBuf, parseFileArg->blockSize);
if (xxh == XXH32_hashFromCanonical(&parsedLine.canonical.xxh32)) {
lineStatus = LineStatus_hashOk;
} }
break;
case 64:
{ XXH64_hash_t xxh;
BMK_hashStream(&xxh, algo_xxh64, fp, parseFileArg->blockBuf, parseFileArg->blockSize);
if (xxh == XXH64_hashFromCanonical(&parsedLine.canonical.xxh64)) {
lineStatus = LineStatus_hashOk;
} }
break;
default:
break;
}
fclose(fp);
}
switch (lineStatus)
{
default:
DISPLAY("%s : unknown error\n", inFileName);
report->quit = 1;
break;
case LineStatus_failedToOpen:
report->nOpenOrReadFailures++;
if (!parseFileArg->statusOnly) {
DISPLAYRESULT("%s : %lu: FAILED open or read %s\n"
, inFileName, lineNumber, parsedLine.filename);
}
break;
case LineStatus_hashOk:
case LineStatus_hashFailed:
{ int b = 1;
if (lineStatus == LineStatus_hashOk) {
/* If --quiet is specified, don't display "OK" */
if (parseFileArg->quiet) b = 0;
} else {
report->nMismatchedChecksums++;
}
if (b && !parseFileArg->statusOnly) {
DISPLAYRESULT("%s: %s\n", parsedLine.filename
, lineStatus == LineStatus_hashOk ? "OK" : "FAILED");
} }
break;
}
} /* while (!report->quit) */
}
/* Parse xxHash checksum file.
* Returns 1, if all procedures were succeeded.
* Returns 0, if any procedures was failed.
*
* If strictMode != 0, return error code if any line is invalid.
* If statusOnly != 0, don't generate any output.
* If warn != 0, print a warning message to stderr.
* If quiet != 0, suppress "OK" line.
*
* "All procedures are succeeded" means:
* - Checksum file contains at least one line and less than SIZE_T_MAX lines.
* - All files are properly opened and read.
* - All hash values match with its content.
* - (strict mode) All lines in checksum file are consistent and well formatted.
*
*/
static int checkFile(const char* inFileName,
const endianess displayEndianess,
U32 strictMode,
U32 statusOnly,
U32 warn,
U32 quiet)
{
int result = 0;
FILE* inFile = NULL;
ParseFileArg parseFileArgBody;
ParseFileArg* const parseFileArg = &parseFileArgBody;
ParseFileReport* const report = &parseFileArg->report;
if (displayEndianess != big_endian) {
/* Don't accept little endian */
DISPLAY( "Check file mode doesn't support little endian\n" );
return 0;
}