mirror of
https://github.com/ckolivas/lrzip.git
synced 2025-12-06 07:12:00 +01:00
6b50431410
For various use cases it is desirable to be able to specify the passphrase for a password protected encryption on the command line. So allow option 'encrypt' to have an optional argument and set control->passphrase to this argument if it is given. Read the passphrase (and prompt for it) only from standard input if not given on the command line. Additionally, update documentation. This fixes github issue #72, reported by aivanise.
548 lines
14 KiB
C
548 lines
14 KiB
C
/*
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Copyright (C) 2006-2016 Con Kolivas
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Copyright (C) 2011 Peter Hyman
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Copyright (C) 1998-2003 Andrew Tridgell
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LRZIP_PRIV_H
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#define LRZIP_PRIV_H
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#include "config.h"
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#define NUM_STREAMS 2
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#define STREAM_BUFSIZE (1024 * 1024 * 10)
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdarg.h>
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#include <semaphore.h>
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#ifdef HAVE_PTHREAD_H
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# include <pthread.h>
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_MALLOC_H
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# include <malloc.h>
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#endif
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#ifdef HAVE_ALLOCA_H
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# include <alloca.h>
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#elif defined __GNUC__
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# define alloca __builtin_alloca
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#elif defined _AIX
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# define alloca __alloca
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#elif defined _MSC_VER
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# include <malloc.h>
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# define alloca _alloca
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#else
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# include <stddef.h>
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# ifdef __cplusplus
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extern "C"
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# endif
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void *alloca (size_t);
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#endif
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#ifdef HAVE_ENDIAN_H
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# include <endian.h>
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#elif HAVE_SYS_ENDIAN_H
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# include <sys/endian.h>
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#endif
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#ifndef __BYTE_ORDER
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# ifndef __BIG_ENDIAN
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# define __BIG_ENDIAN 4321
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# define __LITTLE_ENDIAN 1234
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# endif
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# ifdef WORDS_BIGENDIAN
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# define __BYTE_ORDER __BIG_ENDIAN
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# else
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# define __BYTE_ORDER __LITTLE_ENDIAN
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# endif
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#endif
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#ifndef MD5_DIGEST_SIZE
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# define MD5_DIGEST_SIZE 16
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#endif
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#define free(X) do { free((X)); (X) = NULL; } while (0)
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#ifndef strdupa
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# define strdupa(str) strcpy(alloca(strlen(str) + 1), str)
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#endif
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#ifndef strndupa
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# define strndupa(str, len) strncpy(alloca(len + 1), str, len)
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#endif
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#ifndef uchar
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#define uchar unsigned char
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#endif
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#ifndef int32
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#if (SIZEOF_INT == 4)
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#define int32 int
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#elif (SIZEOF_LONG == 4)
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#define int32 long
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#elif (SIZEOF_SHORT == 4)
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#define int32 short
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#endif
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#endif
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#ifndef int16
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#if (SIZEOF_INT == 2)
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#define int16 int
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#elif (SIZEOF_SHORT == 2)
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#define int16 short
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#endif
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#endif
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#ifndef uint32
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#define uint32 unsigned int32
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#endif
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#ifndef uint16
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#define uint16 unsigned int16
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#endif
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#ifndef MIN
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#define MIN(a, b) ((a) < (b)? (a): (b))
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#endif
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#ifndef MAX
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#define MAX(a, b) ((a) > (b)? (a): (b))
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#endif
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#if !HAVE_STRERROR
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extern char *sys_errlist[];
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#define strerror(i) sys_errlist[i]
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#endif
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#ifndef HAVE_ERRNO_H
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extern int errno;
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#endif
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define __maybe_unused __attribute__((unused))
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#if defined(__MINGW32__) || defined(__CYGWIN__) || defined(ANDROID) || defined(__APPLE__)
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# define ffsll __builtin_ffsll
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#endif
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typedef int64_t i64;
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typedef uint32_t u32;
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typedef struct rzip_control rzip_control;
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typedef struct md5_ctx md5_ctx;
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/* ck specific unnamed semaphore implementations to cope with osx not
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* implementing them. */
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#ifdef __APPLE__
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struct cksem {
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int pipefd[2];
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};
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typedef struct cksem cksem_t;
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#else
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typedef sem_t cksem_t;
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#endif
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#if !defined(__linux)
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#define mremap fake_mremap
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#endif
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#if defined(__APPLE__)
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# define MD5_RELIABLE (0)
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#else
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# define MD5_RELIABLE (1)
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#endif
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#define bswap_32(x) \
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((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
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(((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
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# define bswap_64(x) \
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((((x) & 0xff00000000000000ull) >> 56) \
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| (((x) & 0x00ff000000000000ull) >> 40) \
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| (((x) & 0x0000ff0000000000ull) >> 24) \
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| (((x) & 0x000000ff00000000ull) >> 8) \
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| (((x) & 0x00000000ff000000ull) << 8) \
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| (((x) & 0x0000000000ff0000ull) << 24) \
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| (((x) & 0x000000000000ff00ull) << 40) \
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| (((x) & 0x00000000000000ffull) << 56))
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#ifdef leto32h
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# define le32toh(x) leto32h(x)
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# define le64toh(x) leto64h(x)
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#endif
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#ifndef le32toh
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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# define htole32(x) (x)
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# define le32toh(x) (x)
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# define htole64(x) (x)
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# define le64toh(x) (x)
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# elif __BYTE_ORDER == __BIG_ENDIAN
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# define htole32(x) bswap_32 (x)
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# define le32toh(x) bswap_32 (x)
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# define htole64(x) bswap_64 (x)
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# define le64toh(x) bswap_64 (x)
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#else
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#error UNKNOWN BYTE ORDER
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#endif
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#endif
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#define FLAG_SHOW_PROGRESS (1 << 0)
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#define FLAG_KEEP_FILES (1 << 1)
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#define FLAG_TEST_ONLY (1 << 2)
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#define FLAG_FORCE_REPLACE (1 << 3)
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#define FLAG_DECOMPRESS (1 << 4)
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#define FLAG_NO_COMPRESS (1 << 5)
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#define FLAG_LZO_COMPRESS (1 << 6)
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#define FLAG_BZIP2_COMPRESS (1 << 7)
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#define FLAG_ZLIB_COMPRESS (1 << 8)
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#define FLAG_ZPAQ_COMPRESS (1 << 9)
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#define FLAG_VERBOSITY (1 << 10)
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#define FLAG_VERBOSITY_MAX (1 << 11)
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#define FLAG_STDIN (1 << 12)
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#define FLAG_STDOUT (1 << 13)
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#define FLAG_INFO (1 << 14)
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#define FLAG_UNLIMITED (1 << 15)
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#define FLAG_HASH (1 << 16)
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#define FLAG_MD5 (1 << 17)
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#define FLAG_CHECK (1 << 18)
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#define FLAG_KEEP_BROKEN (1 << 19)
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#define FLAG_THRESHOLD (1 << 20)
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#define FLAG_TMP_OUTBUF (1 << 21)
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#define FLAG_TMP_INBUF (1 << 22)
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#define FLAG_ENCRYPT (1 << 23)
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#define NO_MD5 (!(HASH_CHECK) && !(HAS_MD5))
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#define BITS32 (sizeof(long) == 4)
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#define CTYPE_NONE 3
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#define CTYPE_BZIP2 4
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#define CTYPE_LZO 5
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#define CTYPE_LZMA 6
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#define CTYPE_GZIP 7
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#define CTYPE_ZPAQ 8
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#define PASS_LEN 512
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#define HASH_LEN 64
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#define SALT_LEN 8
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#define CBC_LEN 16
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#define one_g (1000 * 1024 * 1024)
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#if defined(NOTHREAD) || !defined(_SC_NPROCESSORS_ONLN)
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# define PROCESSORS (1)
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#else
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# define PROCESSORS (sysconf(_SC_NPROCESSORS_ONLN))
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#endif
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#ifdef _SC_PAGE_SIZE
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# define PAGE_SIZE (sysconf(_SC_PAGE_SIZE))
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#else
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# define PAGE_SIZE (4096)
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#endif
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/* Determine how many times to hash the password when encrypting, based on
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* the date such that we increase the number of loops according to Moore's
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* law relative to when the data is encrypted. It is then stored as a two
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* byte value in the header */
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#define MOORE 1.835 // world constant [TIMES per YEAR]
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#define ARBITRARY 1000000 // number of sha2 calls per one second in 2011
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#define T_ZERO 1293840000 // seconds since epoch in 2011
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#define SECONDS_IN_A_YEAR (365*86400)
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#define MOORE_TIMES_PER_SECOND pow (MOORE, 1.0 / SECONDS_IN_A_YEAR)
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#define ARBITRARY_AT_EPOCH (ARBITRARY * pow (MOORE_TIMES_PER_SECOND, -T_ZERO))
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#define FLAG_VERBOSE (FLAG_VERBOSITY | FLAG_VERBOSITY_MAX)
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#define FLAG_NOT_LZMA (FLAG_NO_COMPRESS | FLAG_LZO_COMPRESS | FLAG_BZIP2_COMPRESS | FLAG_ZLIB_COMPRESS | FLAG_ZPAQ_COMPRESS)
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#define LZMA_COMPRESS (!(control->flags & FLAG_NOT_LZMA))
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#define SHOW_PROGRESS (control->flags & FLAG_SHOW_PROGRESS)
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#define KEEP_FILES (control->flags & FLAG_KEEP_FILES)
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#define TEST_ONLY (control->flags & FLAG_TEST_ONLY)
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#define FORCE_REPLACE (control->flags & FLAG_FORCE_REPLACE)
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#define DECOMPRESS (control->flags & FLAG_DECOMPRESS)
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#define NO_COMPRESS (control->flags & FLAG_NO_COMPRESS)
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#define LZO_COMPRESS (control->flags & FLAG_LZO_COMPRESS)
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#define BZIP2_COMPRESS (control->flags & FLAG_BZIP2_COMPRESS)
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#define ZLIB_COMPRESS (control->flags & FLAG_ZLIB_COMPRESS)
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#define ZPAQ_COMPRESS (control->flags & FLAG_ZPAQ_COMPRESS)
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#define VERBOSE (control->flags & FLAG_VERBOSE)
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#define VERBOSITY (control->flags & FLAG_VERBOSITY)
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#define MAX_VERBOSE (control->flags & FLAG_VERBOSITY_MAX)
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#define STDIN (control->flags & FLAG_STDIN)
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#define STDOUT (control->flags & FLAG_STDOUT)
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#define INFO (control->flags & FLAG_INFO)
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#define UNLIMITED (control->flags & FLAG_UNLIMITED)
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#define HASH_CHECK (control->flags & FLAG_HASH)
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#define HAS_MD5 (control->flags & FLAG_MD5)
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#define CHECK_FILE (control->flags & FLAG_CHECK)
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#define KEEP_BROKEN (control->flags & FLAG_KEEP_BROKEN)
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#define LZO_TEST (control->flags & FLAG_THRESHOLD)
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#define TMP_OUTBUF (control->flags & FLAG_TMP_OUTBUF)
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#define TMP_INBUF (control->flags & FLAG_TMP_INBUF)
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#define ENCRYPT (control->flags & FLAG_ENCRYPT)
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#define IS_FROM_FILE ( !!(control->inFILE) && !STDIN )
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/* Structure to save state of computation between the single steps. */
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struct md5_ctx
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{
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uint32_t A;
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uint32_t B;
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uint32_t C;
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uint32_t D;
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uint32_t total[2];
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uint32_t buflen;
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uint32_t buffer[32];
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};
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struct sliding_buffer {
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uchar *buf_low; /* The low window buffer */
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uchar *buf_high;/* "" high "" */
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i64 orig_offset;/* Where the original buffer started */
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i64 offset_low; /* What the current offset the low buffer has */
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i64 offset_high;/* "" high buffer "" */
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i64 offset_search;/* Where the search is up to */
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i64 orig_size; /* How big the full buffer would be */
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i64 size_low; /* How big the low buffer is */
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i64 size_high; /* "" high "" */
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i64 high_length;/* How big the high buffer should be */
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int fd; /* The fd of the mmap */
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};
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struct checksum {
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uint32_t *cksum;
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uchar *buf;
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i64 len;
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};
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typedef i64 tag;
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struct rzip_state {
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void *ss;
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struct level *level;
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tag hash_index[256];
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struct hash_entry *hash_table;
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char hash_bits;
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i64 hash_count;
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i64 hash_limit;
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tag minimum_tag_mask;
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i64 tag_clean_ptr;
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i64 last_match;
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i64 chunk_size;
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i64 mmap_size;
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char chunk_bytes;
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uint32_t cksum;
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int fd_in, fd_out;
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char stdin_eof;
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struct {
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i64 inserts;
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i64 literals;
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i64 literal_bytes;
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i64 matches;
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i64 match_bytes;
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i64 tag_hits;
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i64 tag_misses;
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} stats;
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};
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struct rzip_control {
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char *infile;
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FILE *inFILE; // if a FILE is being read from
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char *outname;
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char *outfile;
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FILE *outFILE; // if a FILE is being written to
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char *outdir;
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char *tmpdir; // when stdin, stdout, or test used
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uchar *tmp_outbuf; // Temporary file storage for stdout
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i64 out_ofs; // Output offset when tmp_outbuf in use
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i64 hist_ofs; // History offset
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i64 out_len; // Total length of tmp_outbuf
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i64 out_maxlen; // The largest the tmp_outbuf can be used
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i64 out_relofs; // Relative tmp_outbuf offset when stdout has been flushed
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uchar *tmp_inbuf;
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i64 in_ofs;
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i64 in_len;
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i64 in_maxlen;
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FILE *msgout; //stream for output messages
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FILE *msgerr; //stream for output errors
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char *suffix;
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uchar compression_level;
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i64 overhead; // compressor overhead
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i64 usable_ram; // the most ram we'll try to use on one activity
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i64 maxram; // the largest chunk of ram to allocate
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unsigned char lzma_properties[5]; // lzma properties, encoded
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i64 window;
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unsigned long flags;
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i64 ramsize;
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i64 max_chunk;
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i64 max_mmap;
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int threads;
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char nice_val; // added for consistency
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char major_version;
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char minor_version;
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i64 st_size;
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long page_size;
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int fd_in;
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int fd_out;
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int fd_hist;
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i64 encloops;
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i64 secs;
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void (*pass_cb)(void *, char *, size_t); /* callback to get password in lib */
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void *pass_data;
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uchar salt[SALT_LEN];
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uchar *salt_pass;
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int salt_pass_len;
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uchar *hash;
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char *passphrase;
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pthread_mutex_t control_lock;
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unsigned char eof;
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unsigned char magic_written;
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bool lzma_prop_set;
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cksem_t cksumsem;
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md5_ctx ctx;
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uchar md5_resblock[MD5_DIGEST_SIZE];
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i64 md5_read; // How far into the file the md5 has done so far
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struct checksum checksum;
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const char *util_infile;
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char delete_infile;
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const char *util_outfile;
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#define STREAM_BUCKET_SIZE 20
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size_t sinfo_buckets;
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size_t sinfo_idx;
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struct stream_info **sinfo_queue;
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char delete_outfile;
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FILE *outputfile;
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char library_mode;
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int log_level;
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void (*info_cb)(void *data, int pct, int chunk_pct);
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void *info_data;
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void (*log_cb)(void *data, unsigned int level, unsigned int line, const char *file, const char *func, const char *format, va_list args);
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void *log_data;
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char chunk_bytes;
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struct sliding_buffer sb;
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void (*do_mcpy)(rzip_control *, unsigned char *, i64, i64);
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void (*next_tag)(rzip_control *, struct rzip_state *, i64, tag *);
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tag (*full_tag)(rzip_control *, struct rzip_state *, i64);
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i64 (*match_len)(rzip_control *, struct rzip_state *, i64, i64, i64, i64 *);
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};
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struct stream {
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i64 last_head;
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uchar *buf;
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i64 buflen;
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i64 bufp;
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uchar eos;
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long uthread_no;
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long unext_thread;
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long base_thread;
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int total_threads;
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i64 last_headofs;
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};
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struct stream_info {
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struct stream *s;
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uchar num_streams;
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int fd;
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i64 bufsize;
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i64 cur_pos;
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i64 initial_pos;
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i64 total_read;
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i64 ram_alloced;
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i64 size;
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long thread_no;
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long next_thread;
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int chunks;
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char chunk_bytes;
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};
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static inline void print_stuff(const rzip_control *control, int level, unsigned int line, const char *file, const char *func, const char *format, ...)
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{
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va_list ap;
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if (control->library_mode && control->log_cb && (control->log_level >= level)) {
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va_start(ap, format);
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control->log_cb(control->log_data, level, line, file, func, format, ap);
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va_end(ap);
|
|
} else if (control->msgout) {
|
|
va_start(ap, format);
|
|
vfprintf(control->msgout, format, ap);
|
|
va_end(ap);
|
|
fflush(control->msgout);
|
|
}
|
|
}
|
|
|
|
static inline void print_err(const rzip_control *control, unsigned int line, const char *file, const char *func, const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
if (control->library_mode && control->log_cb && (control->log_level >= 0)) {
|
|
va_start(ap, format);
|
|
control->log_cb(control->log_data, 0, line, file, func, format, ap);
|
|
va_end(ap);
|
|
} else if (control->msgerr) {
|
|
va_start(ap, format);
|
|
vfprintf(control->msgerr, format, ap);
|
|
va_end(ap);
|
|
fflush(control->msgerr);
|
|
}
|
|
}
|
|
|
|
#define print_stuff(level, ...) do {\
|
|
print_stuff(control, level, __LINE__, __FILE__, __func__, __VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define print_output(...) do {\
|
|
print_stuff(1, __VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define print_progress(...) do {\
|
|
if (SHOW_PROGRESS) \
|
|
print_stuff(2, __VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define print_verbose(...) do {\
|
|
if (VERBOSE) \
|
|
print_stuff(3, __VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define print_maxverbose(...) do {\
|
|
if (MAX_VERBOSE) \
|
|
print_stuff(4, __VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define print_err(...) do {\
|
|
print_err(control, __LINE__, __FILE__, __func__, __VA_ARGS__); \
|
|
} while (0)
|
|
#endif
|