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