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/*-
* Copyright (c) 2011 Michihiro NAKAJIMA
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "archive_platform.h"
__FBSDID("$FreeBSD$");
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <stdlib.h>
#ifdef HAVE_BZLIB_H
#include <cm_bzlib.h>
#endif
#if HAVE_LZMA_H
#include <lzma.h>
#endif
#ifdef HAVE_ZLIB_H
#include <cm_zlib.h>
#endif
#include "archive.h"
#ifndef HAVE_ZLIB_H
#include "archive_crc32.h"
#endif
#include "archive_endian.h"
#include "archive_entry.h"
#include "archive_entry_locale.h"
#include "archive_ppmd7_private.h"
#include "archive_private.h"
#include "archive_rb.h"
#include "archive_string.h"
#include "archive_write_private.h"
/*
* Codec ID
*/
#define _7Z_COPY 0
#define _7Z_LZMA1 0x030101
#define _7Z_LZMA2 0x21
#define _7Z_DEFLATE 0x040108
#define _7Z_BZIP2 0x040202
#define _7Z_PPMD 0x030401
/*
* 7-Zip header property IDs.
*/
#define kEnd 0x00
#define kHeader 0x01
#define kArchiveProperties 0x02
#define kAdditionalStreamsInfo 0x03
#define kMainStreamsInfo 0x04
#define kFilesInfo 0x05
#define kPackInfo 0x06
#define kUnPackInfo 0x07
#define kSubStreamsInfo 0x08
#define kSize 0x09
#define kCRC 0x0A
#define kFolder 0x0B
#define kCodersUnPackSize 0x0C
#define kNumUnPackStream 0x0D
#define kEmptyStream 0x0E
#define kEmptyFile 0x0F
#define kAnti 0x10
#define kName 0x11
#define kCTime 0x12
#define kATime 0x13
#define kMTime 0x14
#define kAttributes 0x15
#define kEncodedHeader 0x17
enum la_zaction {
ARCHIVE_Z_FINISH,
ARCHIVE_Z_RUN
};
/*
* A stream object of universal compressor.
*/
struct la_zstream {
const uint8_t *next_in;
size_t avail_in;
uint64_t total_in;
uint8_t *next_out;
size_t avail_out;
uint64_t total_out;
uint32_t prop_size;
uint8_t *props;
int valid;
void *real_stream;
int (*code) (struct archive *a,
struct la_zstream *lastrm,
enum la_zaction action);
int (*end)(struct archive *a,
struct la_zstream *lastrm);
};
#define PPMD7_DEFAULT_ORDER 6
#define PPMD7_DEFAULT_MEM_SIZE (1 << 24)
struct ppmd_stream {
int stat;
CPpmd7 ppmd7_context;
CPpmd7z_RangeEnc range_enc;
IByteOut byteout;
uint8_t *buff;
uint8_t *buff_ptr;
uint8_t *buff_end;
size_t buff_bytes;
};
struct coder {
unsigned codec;
size_t prop_size;
uint8_t *props;
};
struct file {
struct archive_rb_node rbnode;
struct file *next;
unsigned name_len;
uint8_t *utf16name;/* UTF16-LE name. */
uint64_t size;
unsigned flg;
#define MTIME_IS_SET (1<<0)
#define ATIME_IS_SET (1<<1)
#define CTIME_IS_SET (1<<2)
#define CRC32_IS_SET (1<<3)
#define HAS_STREAM (1<<4)
struct {
time_t time;
long time_ns;
} times[3];
#define MTIME 0
#define ATIME 1
#define CTIME 2
mode_t mode;
uint32_t crc32;
int dir:1;
};
struct _7zip {
int temp_fd;
uint64_t temp_offset;
struct file *cur_file;
size_t total_number_entry;
size_t total_number_nonempty_entry;
size_t total_number_empty_entry;
size_t total_number_dir_entry;
size_t total_bytes_entry_name;
size_t total_number_time_defined[3];
uint64_t total_bytes_compressed;
uint64_t total_bytes_uncompressed;
uint64_t entry_bytes_remaining;
uint32_t entry_crc32;
uint32_t precode_crc32;
uint32_t encoded_crc32;
int crc32flg;
#define PRECODE_CRC32 1
#define ENCODED_CRC32 2
unsigned opt_compression;
int opt_compression_level;
struct la_zstream stream;
struct coder coder;
struct archive_string_conv *sconv;
/*
* Compressed data buffer.
*/
unsigned char wbuff[1024 * 64];
size_t wbuff_remaining;
/*
* The list of the file entries which has its contents is used to
* manage struct file objects.
* We use 'next' a menber of struct file to chain.
*/
struct {
struct file *first;
struct file **last;
} file_list, empty_list;
struct archive_rb_tree rbtree;/* for empty files */
};
static int _7z_options(struct archive_write *,
const char *, const char *);
static int _7z_write_header(struct archive_write *,
struct archive_entry *);
static ssize_t _7z_write_data(struct archive_write *,
const void *, size_t);
static int _7z_finish_entry(struct archive_write *);
static int _7z_close(struct archive_write *);
static int _7z_free(struct archive_write *);
static int file_cmp_node(const struct archive_rb_node *,
const struct archive_rb_node *);
static int file_cmp_key(const struct archive_rb_node *, const void *);
static int file_new(struct archive_write *a, struct archive_entry *,
struct file **);
static void file_free(struct file *);
static void file_register(struct _7zip *, struct file *);
static void file_register_empty(struct _7zip *, struct file *);
static void file_init_register(struct _7zip *);
static void file_init_register_empty(struct _7zip *);
static void file_free_register(struct _7zip *);
static ssize_t compress_out(struct archive_write *, const void *, size_t ,
enum la_zaction);
static int compression_init_encoder_copy(struct archive *,
struct la_zstream *);
static int compression_code_copy(struct archive *,
struct la_zstream *, enum la_zaction);
static int compression_end_copy(struct archive *, struct la_zstream *);
static int compression_init_encoder_deflate(struct archive *,
struct la_zstream *, int, int);
#ifdef HAVE_ZLIB_H
static int compression_code_deflate(struct archive *,
struct la_zstream *, enum la_zaction);
static int compression_end_deflate(struct archive *, struct la_zstream *);
#endif
static int compression_init_encoder_bzip2(struct archive *,
struct la_zstream *, int);
#if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
static int compression_code_bzip2(struct archive *,
struct la_zstream *, enum la_zaction);
static int compression_end_bzip2(struct archive *, struct la_zstream *);
#endif
static int compression_init_encoder_lzma1(struct archive *,
struct la_zstream *, int);
static int compression_init_encoder_lzma2(struct archive *,
struct la_zstream *, int);
#if defined(HAVE_LZMA_H)
static int compression_code_lzma(struct archive *,
struct la_zstream *, enum la_zaction);
static int compression_end_lzma(struct archive *, struct la_zstream *);
#endif
static int compression_init_encoder_ppmd(struct archive *,
struct la_zstream *, unsigned, uint32_t);
static int compression_code_ppmd(struct archive *,
struct la_zstream *, enum la_zaction);
static int compression_end_ppmd(struct archive *, struct la_zstream *);
static int _7z_compression_init_encoder(struct archive_write *, unsigned,
int);
static int compression_code(struct archive *,
struct la_zstream *, enum la_zaction);
static int compression_end(struct archive *,
struct la_zstream *);
static int enc_uint64(struct archive_write *, uint64_t);
static int make_header(struct archive_write *, uint64_t, uint64_t,
uint64_t, int, struct coder *);
static int make_streamsInfo(struct archive_write *, uint64_t, uint64_t,
uint64_t, int, struct coder *, int, uint32_t);
int
archive_write_set_format_7zip(struct archive *_a)
{
static const struct archive_rb_tree_ops rb_ops = {
file_cmp_node, file_cmp_key
};
struct archive_write *a = (struct archive_write *)_a;
struct _7zip *zip;
archive_check_magic(_a, ARCHIVE_WRITE_MAGIC,
ARCHIVE_STATE_NEW, "archive_write_set_format_7zip");
/* If another format was already registered, unregister it. */
if (a->format_free != NULL)
(a->format_free)(a);
zip = calloc(1, sizeof(*zip));
if (zip == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate 7-Zip data");
return (ARCHIVE_FATAL);
}
zip->temp_fd = -1;
__archive_rb_tree_init(&(zip->rbtree), &rb_ops);
file_init_register(zip);
file_init_register_empty(zip);
/* Set default compression type and its level. */
#if HAVE_LZMA_H
zip->opt_compression = _7Z_LZMA1;
#elif defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
zip->opt_compression = _7Z_BZIP2;
#elif defined(HAVE_ZLIB_H)
zip->opt_compression = _7Z_DEFLATE;
#else
zip->opt_compression = _7Z_COPY;
#endif
zip->opt_compression_level = 6;
a->format_data = zip;
a->format_name = "7zip";
a->format_options = _7z_options;
a->format_write_header = _7z_write_header;
a->format_write_data = _7z_write_data;
a->format_finish_entry = _7z_finish_entry;
a->format_close = _7z_close;
a->format_free = _7z_free;
a->archive.archive_format = ARCHIVE_FORMAT_7ZIP;
a->archive.archive_format_name = "7zip";
return (ARCHIVE_OK);
}
static int
_7z_options(struct archive_write *a, const char *key, const char *value)
{
struct _7zip *zip;
zip = (struct _7zip *)a->format_data;
if (strcmp(key, "compression") == 0) {
const char *name = NULL;
if (value == NULL || strcmp(value, "copy") == 0 ||
strcmp(value, "COPY") == 0 ||
strcmp(value, "store") == 0 ||
strcmp(value, "STORE") == 0)
zip->opt_compression = _7Z_COPY;
else if (strcmp(value, "deflate") == 0 ||
strcmp(value, "DEFLATE") == 0)
#if HAVE_ZLIB_H
zip->opt_compression = _7Z_DEFLATE;
#else
name = "deflate";
#endif
else if (strcmp(value, "bzip2") == 0 ||
strcmp(value, "BZIP2") == 0)
#if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
zip->opt_compression = _7Z_BZIP2;
#else
name = "bzip2";
#endif
else if (strcmp(value, "lzma1") == 0 ||
strcmp(value, "LZMA1") == 0)
#if HAVE_LZMA_H
zip->opt_compression = _7Z_LZMA1;
#else
name = "lzma1";
#endif
else if (strcmp(value, "lzma2") == 0 ||
strcmp(value, "LZMA2") == 0)
#if HAVE_LZMA_H
zip->opt_compression = _7Z_LZMA2;
#else
name = "lzma2";
#endif
else if (strcmp(value, "ppmd") == 0 ||
strcmp(value, "PPMD") == 0 ||
strcmp(value, "PPMd") == 0)
zip->opt_compression = _7Z_PPMD;
else {
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"Unkonwn compression name: `%s'",
value);
return (ARCHIVE_FAILED);
}
if (name != NULL) {
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"`%s' compression not supported "
"on this platform",
name);
return (ARCHIVE_FAILED);
}
return (ARCHIVE_OK);
}
if (strcmp(key, "compression-level") == 0) {
if (value == NULL ||
!(value[0] >= '0' && value[0] <= '9') ||
value[1] != '\0') {
archive_set_error(&(a->archive),
ARCHIVE_ERRNO_MISC,
"Illeagal value `%s'",
value);
return (ARCHIVE_FAILED);
}
zip->opt_compression_level = value[0] - '0';
return (ARCHIVE_OK);
}
return (ARCHIVE_FAILED);
}
static int
_7z_write_header(struct archive_write *a, struct archive_entry *entry)
{
struct _7zip *zip;
struct file *file;
int r;
zip = (struct _7zip *)a->format_data;
zip->cur_file = NULL;
zip->entry_bytes_remaining = 0;
if (zip->sconv == NULL) {
zip->sconv = archive_string_conversion_to_charset(
&a->archive, "UTF-16LE", 1);
if (zip->sconv == NULL)
return (ARCHIVE_FATAL);
}
r = file_new(a, entry, &file);
if (r < ARCHIVE_WARN) {
file_free(file);
return (r);
}
if (file->flg & MTIME_IS_SET)
zip->total_number_time_defined[MTIME]++;
if (file->flg & CTIME_IS_SET)
zip->total_number_time_defined[CTIME]++;
if (file->flg & ATIME_IS_SET)
zip->total_number_time_defined[ATIME]++;
if (file->size == 0 && file->dir) {
if (!__archive_rb_tree_insert_node(&(zip->rbtree),
(struct archive_rb_node *)file))
file_free(file);
}
zip->total_number_entry++;
zip->total_bytes_entry_name += file->name_len + 2;
if (file->size == 0) {
/* Count up the number of empty files. */
zip->total_number_empty_entry++;
if (file->dir)
zip->total_number_dir_entry++;
else
file_register_empty(zip, file);
return (r);
}
/*
* Init compression.
*/
if ((zip->total_number_entry - zip->total_number_empty_entry) == 1) {
r = _7z_compression_init_encoder(a, zip->opt_compression,
zip->opt_compression_level);
if (r < 0) {
file_free(file);
return (ARCHIVE_FATAL);
}
}
/* Register a non-empty file. */
file_register(zip, file);
/*
* Set the current file to cur_file to read its contents.
*/
zip->cur_file = file;
/* Save a offset of current file in temporary file. */
zip->entry_bytes_remaining = file->size;
zip->entry_crc32 = 0;
/*
* Store a symbolic link name as file contents.
*/
if (archive_entry_filetype(entry) == AE_IFLNK) {
ssize_t bytes;
const void *p = (const void *)archive_entry_symlink(entry);
bytes = compress_out(a, p, file->size, ARCHIVE_Z_RUN);
if (bytes < 0)
return ((int)bytes);
zip->entry_crc32 = crc32(zip->entry_crc32, p, bytes);
zip->entry_bytes_remaining -= bytes;
}
return (r);
}
/*
* Write data to a temporary file.
*/
static int
write_to_temp(struct archive_write *a, const void *buff, size_t s)
{
struct _7zip *zip;
unsigned char *p;
ssize_t ws;
zip = (struct _7zip *)a->format_data;
/*
* Open a temporary file.
*/
if (zip->temp_fd == -1) {
zip->temp_offset = 0;
zip->temp_fd = __archive_mktemp(NULL);
if (zip->temp_fd < 0) {
archive_set_error(&a->archive, errno,
"Couldn't create temporary file");
return (ARCHIVE_FATAL);
}
}
p = (unsigned char *)buff;
while (s) {
ws = write(zip->temp_fd, p, s);
if (ws < 0) {
archive_set_error(&(a->archive), errno,
"fwrite function failed");
return (ARCHIVE_FATAL);
}
s -= ws;
p += ws;
zip->temp_offset += ws;
}
return (ARCHIVE_OK);
}
static ssize_t
compress_out(struct archive_write *a, const void *buff, size_t s,
enum la_zaction run)
{
struct _7zip *zip = (struct _7zip *)a->format_data;
int r;
if (run == ARCHIVE_Z_FINISH && zip->stream.total_in == 0 && s == 0)
return (0);
if ((zip->crc32flg & PRECODE_CRC32) && s)
zip->precode_crc32 = crc32(zip->precode_crc32, buff, s);
zip->stream.next_in = (const unsigned char *)buff;
zip->stream.avail_in = s;
do {
/* Compress file data. */
r = compression_code(&(a->archive), &(zip->stream), run);
if (r != ARCHIVE_OK && r != ARCHIVE_EOF)
return (ARCHIVE_FATAL);
if (zip->stream.avail_out == 0) {
if (write_to_temp(a, zip->wbuff, sizeof(zip->wbuff))
!= ARCHIVE_OK)
return (ARCHIVE_FATAL);
zip->stream.next_out = zip->wbuff;
zip->stream.avail_out = sizeof(zip->wbuff);
if (zip->crc32flg & ENCODED_CRC32)
zip->encoded_crc32 = crc32(zip->encoded_crc32,
zip->wbuff, sizeof(zip->wbuff));
}
} while (zip->stream.avail_in);
if (run == ARCHIVE_Z_FINISH) {
uint64_t bytes = sizeof(zip->wbuff) - zip->stream.avail_out;
if (write_to_temp(a, zip->wbuff, bytes) != ARCHIVE_OK)
return (ARCHIVE_FATAL);
if ((zip->crc32flg & ENCODED_CRC32) && bytes)
zip->encoded_crc32 = crc32(zip->encoded_crc32,
zip->wbuff, bytes);
}
return (s);
}
static ssize_t
_7z_write_data(struct archive_write *a, const void *buff, size_t s)
{
struct _7zip *zip;
ssize_t bytes;
zip = (struct _7zip *)a->format_data;
if (s > zip->entry_bytes_remaining)
s = zip->entry_bytes_remaining;
if (s == 0 || zip->cur_file == NULL)
return (0);
bytes = compress_out(a, buff, s, ARCHIVE_Z_RUN);
if (bytes < 0)
return (bytes);
zip->entry_crc32 = crc32(zip->entry_crc32, buff, bytes);
zip->entry_bytes_remaining -= bytes;
return (bytes);
}
static int
_7z_finish_entry(struct archive_write *a)
{
struct _7zip *zip;
size_t s;
ssize_t r;
zip = (struct _7zip *)a->format_data;
if (zip->cur_file == NULL)
return (ARCHIVE_OK);
while (zip->entry_bytes_remaining > 0) {
s = zip->entry_bytes_remaining;
if (s > a->null_length)
s = a->null_length;
r = _7z_write_data(a, a->nulls, s);
if (r < 0)
return (r);
}
zip->total_bytes_compressed += zip->stream.total_in;
zip->total_bytes_uncompressed += zip->stream.total_out;
zip->cur_file->crc32 = zip->entry_crc32;
zip->cur_file = NULL;
return (ARCHIVE_OK);
}
static int
flush_wbuff(struct archive_write *a)
{
struct _7zip *zip;
int r;
size_t s;
zip = (struct _7zip *)a->format_data;
s = sizeof(zip->wbuff) - zip->wbuff_remaining;
r = __archive_write_output(a, zip->wbuff, s);
if (r != ARCHIVE_OK)
return (r);
zip->wbuff_remaining = sizeof(zip->wbuff);
return (r);
}
static int
copy_out(struct archive_write *a, uint64_t offset, uint64_t length)
{
struct _7zip *zip;
int r;
zip = (struct _7zip *)a->format_data;
if (zip->temp_offset > 0 &&
lseek(zip->temp_fd, offset, SEEK_SET) < 0) {
archive_set_error(&(a->archive), errno, "lseek failed");
return (ARCHIVE_FATAL);
}
while (length) {
size_t rsize;
ssize_t rs;
unsigned char *wb;
if (length > zip->wbuff_remaining)
rsize = zip->wbuff_remaining;
else
rsize = (size_t)length;
wb = zip->wbuff + (sizeof(zip->wbuff) - zip->wbuff_remaining);
rs = read(zip->temp_fd, wb, rsize);
if (rs < 0) {
archive_set_error(&(a->archive), errno,
"Can't read temporary file(%jd)",
(intmax_t)rs);
return (ARCHIVE_FATAL);
}
if (rs == 0) {
archive_set_error(&(a->archive), 0,
"Truncated 7-Zip archive");
return (ARCHIVE_FATAL);
}
zip->wbuff_remaining -= rs;
length -= rs;
if (zip->wbuff_remaining == 0) {
r = flush_wbuff(a);
if (r != ARCHIVE_OK)
return (r);
}
}
return (ARCHIVE_OK);
}
static int
_7z_close(struct archive_write *a)
{
struct _7zip *zip;
unsigned char *wb;
uint64_t header_offset, header_size, header_unpacksize;
uint64_t length;
uint32_t header_crc32;
int r;
zip = (struct _7zip *)a->format_data;
if (zip->total_number_entry > 0) {
struct archive_rb_node *n;
uint64_t data_offset, data_size, data_unpacksize;
unsigned header_compression;
r = (int)compress_out(a, NULL, 0, ARCHIVE_Z_FINISH);
if (r < 0)
return (r);
data_offset = 0;
data_size = zip->stream.total_out;
data_unpacksize = zip->stream.total_in;
zip->coder.codec = zip->opt_compression;
zip->coder.prop_size = zip->stream.prop_size;
zip->coder.props = zip->stream.props;
zip->stream.prop_size = 0;
zip->stream.props = NULL;
zip->total_number_nonempty_entry =
zip->total_number_entry - zip->total_number_empty_entry;
/* Connect an empty file list. */
*zip->file_list.last = zip->empty_list.first;
zip->file_list.last = zip->empty_list.last;
/* Connect a directory file list. */
ARCHIVE_RB_TREE_FOREACH(n, &(zip->rbtree)) {
file_register(zip, (struct file *)n);
}
/*
* NOTE: 7z command supports just LZMA1, LZMA2 and COPY for
* the compression type for encoding the header.
*/
#if HAVE_LZMA_H
header_compression = _7Z_LZMA1;
/* If the stored file is only one, do not encode the header.
* This is the same way 7z command does. */
if (zip->total_number_entry == 1)
header_compression = _7Z_COPY;
#else
header_compression = _7Z_COPY;
#endif
r = _7z_compression_init_encoder(a, header_compression, 6);
if (r < 0)
return (r);
zip->crc32flg = PRECODE_CRC32;
zip->precode_crc32 = 0;
r = make_header(a, data_offset, data_size, data_unpacksize,
1, &(zip->coder));
if (r < 0)
return (r);
r = (int)compress_out(a, NULL, 0, ARCHIVE_Z_FINISH);
if (r < 0)
return (r);
header_offset = data_offset + data_size;
header_size = zip->stream.total_out;
header_crc32 = zip->precode_crc32;
header_unpacksize = zip->stream.total_in;
if (header_compression != _7Z_COPY) {
/*
* Encode the header in order to reduce the size
* of the archive.
*/
free(zip->coder.props);
zip->coder.codec = header_compression;
zip->coder.prop_size = zip->stream.prop_size;
zip->coder.props = zip->stream.props;
zip->stream.prop_size = 0;
zip->stream.props = NULL;
r = _7z_compression_init_encoder(a, _7Z_COPY, 0);
if (r < 0)
return (r);
zip->crc32flg = ENCODED_CRC32;
zip->encoded_crc32 = 0;
/*
* Make EncodedHeader.
*/
r = enc_uint64(a, kEncodedHeader);
if (r < 0)
return (r);
r = make_streamsInfo(a, header_offset, header_size,
header_unpacksize, 1, &(zip->coder), 0,
header_crc32);
if (r < 0)
return (r);
r = (int)compress_out(a, NULL, 0, ARCHIVE_Z_FINISH);
if (r < 0)
return (r);
header_offset = header_offset + header_size;
header_size = zip->stream.total_out;
header_crc32 = zip->encoded_crc32;
}
zip->crc32flg = 0;
} else {
header_offset = header_size = 0;
header_crc32 = 0;
}
length = zip->temp_offset;
/*
* Make the zip header on wbuff(write buffer).
*/
wb = zip->wbuff;
zip->wbuff_remaining = sizeof(zip->wbuff);
memcpy(&wb[0], "7z\xBC\xAF\x27\x1C", 6);
wb[6] = 0;/* Major version. */
wb[7] = 3;/* Minor version. */
archive_le64enc(&wb[12], header_offset);/* Next Header Offset */
archive_le64enc(&wb[20], header_size);/* Next Header Size */
archive_le32enc(&wb[28], header_crc32);/* Next Header CRC */
archive_le32enc(&wb[8], crc32(0, &wb[12], 20));/* Start Header CRC */
zip->wbuff_remaining -= 32;
/*
* Read all file contents and an encoded header from the temporary
* file and write out it.
*/
r = copy_out(a, 0, length);
if (r != ARCHIVE_OK)
return (r);
r = flush_wbuff(a);
return (r);
}
/*
* Encode 64 bits value into 7-Zip's encoded UINT64 value.
*/
static int
enc_uint64(struct archive_write *a, uint64_t val)
{
unsigned mask = 0x80;
uint8_t numdata[9];
int i;
numdata[0] = 0;
for (i = 1; i < sizeof(numdata); i++) {
if (val < mask) {
numdata[0] |= (uint8_t)val;
break;
}
numdata[i] = (uint8_t)val;
val >>= 8;
numdata[0] |= mask;
mask >>= 1;
}
return (compress_out(a, numdata, i, ARCHIVE_Z_RUN));
}
static int
make_substreamsInfo(struct archive_write *a, struct coder *coders)
{
struct _7zip *zip = (struct _7zip *)a->format_data;
struct file *file;
int r;
/*
* Make SubStreamsInfo.
*/
r = enc_uint64(a, kSubStreamsInfo);
if (r < 0)
return (r);
if (zip->total_number_nonempty_entry > 1 && coders->codec != _7Z_COPY) {
/*
* Make NumUnPackStream.
*/
r = enc_uint64(a, kNumUnPackStream);
if (r < 0)
return (r);
/* Write numUnpackStreams */
r = enc_uint64(a, zip->total_number_nonempty_entry);
if (r < 0)
return (r);
/*
* Make kSize.
*/
r = enc_uint64(a, kSize);
if (r < 0)
return (r);
file = zip->file_list.first;
for (;file != NULL; file = file->next) {
if (file->next == NULL ||
file->next->size == 0)
break;
r = enc_uint64(a, file->size);
if (r < 0)
return (r);
}
}
/*
* Make CRC.
*/
r = enc_uint64(a, kCRC);
if (r < 0)
return (r);
/* All are defined */
r = enc_uint64(a, 1);
if (r < 0)
return (r);
file = zip->file_list.first;
for (;file != NULL; file = file->next) {
uint8_t crc[4];
if (file->size == 0)
break;
archive_le32enc(crc, file->crc32);
r = compress_out(a, crc, 4, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
}
/* Write End. */
r = enc_uint64(a, kEnd);
if (r < 0)
return (r);
return (ARCHIVE_OK);
}
static int
make_streamsInfo(struct archive_write *a, uint64_t offset, uint64_t pack_size,
uint64_t unpack_size, int num_coder, struct coder *coders, int substrm,
uint32_t header_crc)
{
struct _7zip *zip = (struct _7zip *)a->format_data;
uint8_t codec_buff[8];
int numFolders, fi;
int codec_size;
int i, r;
if (coders->codec == _7Z_COPY)
numFolders = zip->total_number_nonempty_entry;
else
numFolders = 1;
/*
* Make PackInfo.
*/
r = enc_uint64(a, kPackInfo);
if (r < 0)
return (r);
/* Write PackPos. */
r = enc_uint64(a, offset);
if (r < 0)
return (r);
/* Write NumPackStreams. */
r = enc_uint64(a, numFolders);
if (r < 0)
return (r);
/* Make Size. */
r = enc_uint64(a, kSize);
if (r < 0)
return (r);
if (numFolders > 1) {
struct file *file = zip->file_list.first;
for (;file != NULL; file = file->next) {
if (file->size == 0)
break;
r = enc_uint64(a, file->size);
if (r < 0)
return (r);
}
} else {
/* Write size. */
r = enc_uint64(a, pack_size);
if (r < 0)
return (r);
}
r = enc_uint64(a, kEnd);
if (r < 0)
return (r);
/*
* Make UnPackInfo.
*/
r = enc_uint64(a, kUnPackInfo);
if (r < 0)
return (r);
/*
* Make Folder.
*/
r = enc_uint64(a, kFolder);
if (r < 0)
return (r);
/* Write NumFolders. */
r = enc_uint64(a, numFolders);
if (r < 0)
return (r);
/* Write External. */
r = enc_uint64(a, 0);
if (r < 0)
return (r);
for (fi = 0; fi < numFolders; fi++) {
/* Write NumCoders. */
r = enc_uint64(a, num_coder);
if (r < 0)
return (r);
for (i = 0; i < num_coder; i++) {
unsigned codec_id = coders[i].codec;
/* Write Codec flag. */
archive_be64enc(codec_buff, codec_id);
for (codec_size = 8; codec_size > 0; codec_size--) {
if (codec_buff[8 - codec_size])
break;
}
if (codec_size == 0)
codec_size = 1;
if (coders[i].prop_size)
r = enc_uint64(a, codec_size | 0x20);
else
r = enc_uint64(a, codec_size);
if (r < 0)
return (r);
/* Write Codec ID. */
codec_size &= 0x0f;
r = compress_out(a, &codec_buff[8-codec_size],
codec_size, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
if (coders[i].prop_size) {
/* Write Codec property size. */
r = enc_uint64(a, coders[i].prop_size);
if (r < 0)
return (r);
/* Write Codec properties. */
r = compress_out(a, coders[i].props,
coders[i].prop_size, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
}
}
}
/*
* Make CodersUnPackSize.
*/
r = enc_uint64(a, kCodersUnPackSize);
if (r < 0)
return (r);
if (numFolders > 1) {
struct file *file = zip->file_list.first;
for (;file != NULL; file = file->next) {
if (file->size == 0)
break;
r = enc_uint64(a, file->size);
if (r < 0)
return (r);
}
} else {
/* Write UnPackSize. */
r = enc_uint64(a, unpack_size);
if (r < 0)
return (r);
}
if (!substrm) {
uint8_t crc[4];
/*
* Make CRC.
*/
r = enc_uint64(a, kCRC);
if (r < 0)
return (r);
/* All are defined */
r = enc_uint64(a, 1);
if (r < 0)
return (r);
archive_le32enc(crc, header_crc);
r = compress_out(a, crc, 4, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
}
/* Write End. */
r = enc_uint64(a, kEnd);
if (r < 0)
return (r);
if (substrm) {
/*
* Make SubStreamsInfo.
*/
r = make_substreamsInfo(a, coders);
if (r < 0)
return (r);
}
/* Write End. */
r = enc_uint64(a, kEnd);
if (r < 0)
return (r);
return (ARCHIVE_OK);
}
#define EPOC_TIME ARCHIVE_LITERAL_ULL(116444736000000000)
static uint64_t
utcToFiletime(time_t time, long ns)
{
uint64_t fileTime;
fileTime = time;
fileTime *= 10000000;
fileTime += ns / 100;
fileTime += EPOC_TIME;
return (fileTime);
}
static int
make_time(struct archive_write *a, uint8_t type, unsigned flg, int ti)
{
uint8_t filetime[8];
struct _7zip *zip = (struct _7zip *)a->format_data;
struct file *file;
int r;
uint8_t mask, byte;
/*
* Make Time Bools.
*/
if (zip->total_number_time_defined[ti] == zip->total_number_entry) {
/* Write Time Type. */
r = enc_uint64(a, type);
if (r < 0)
return (r);
/* Write EmptyStream Size. */
r = enc_uint64(a, 2 + zip->total_number_entry * 8);
if (r < 0)
return (r);
/* All are defined. */
r = enc_uint64(a, 1);
if (r < 0)
return (r);
} else {
if (zip->total_number_time_defined[ti] == 0)
return (ARCHIVE_OK);
/* Write Time Type. */
r = enc_uint64(a, type);
if (r < 0)
return (r);
/* Write EmptyStream Size. */
r = enc_uint64(a, 2 + ((zip->total_number_entry + 7) >> 3)
+ zip->total_number_time_defined[ti] * 8);
if (r < 0)
return (r);
/* All are not defined. */
r = enc_uint64(a, 0);
if (r < 0)
return (r);
byte = 0;
mask = 0x80;
file = zip->file_list.first;
for (;file != NULL; file = file->next) {
if (file->flg & flg)
byte |= mask;
mask >>= 1;
if (mask == 0) {
r = compress_out(a, &byte, 1, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
mask = 0x80;
byte = 0;
}
}
if (mask != 0x80) {
r = compress_out(a, &byte, 1, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
}
}
/* External. */
r = enc_uint64(a, 0);
if (r < 0)
return (r);
/*
* Make Times.
*/
file = zip->file_list.first;
for (;file != NULL; file = file->next) {
if ((file->flg & flg) == 0)
continue;
archive_le64enc(filetime, utcToFiletime(file->times[ti].time,
file->times[ti].time_ns));
r = compress_out(a, filetime, 8, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
}
return (ARCHIVE_OK);
}
static int
make_header(struct archive_write *a, uint64_t offset, uint64_t pack_size,
uint64_t unpack_size, int codernum, struct coder *coders)
{
struct _7zip *zip = (struct _7zip *)a->format_data;
struct file *file;
int r;
uint8_t mask, byte;
/*
* Make FilesInfo.
*/
r = enc_uint64(a, kHeader);
if (r < 0)
return (r);
/*
* If there are empty files only, do not write MainStreamInfo.
*/
if (zip->total_number_nonempty_entry) {
/*
* Make MainStreamInfo.
*/
r = enc_uint64(a, kMainStreamsInfo);
if (r < 0)
return (r);
r = make_streamsInfo(a, offset, pack_size, unpack_size,
codernum, coders, 1, 0);
if (r < 0)
return (r);
}
/*
* Make FilesInfo.
*/
r = enc_uint64(a, kFilesInfo);
if (r < 0)
return (r);
/* Write numFiles. */
r = enc_uint64(a, zip->total_number_entry);
if (r < 0)
return (r);
if (zip->total_number_empty_entry > 0) {
/* Make EmptyStream. */
r = enc_uint64(a, kEmptyStream);
if (r < 0)
return (r);
/* Write EmptyStream Size. */
r = enc_uint64(a, (zip->total_number_entry+7)>>3);
if (r < 0)
return (r);
byte = 0;
mask = 0x80;
file = zip->file_list.first;
for (;file != NULL; file = file->next) {
if (file->size == 0)
byte |= mask;
mask >>= 1;
if (mask == 0) {
r = compress_out(a, &byte, 1, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
mask = 0x80;
byte = 0;
}
}
if (mask != 0x80) {
r = compress_out(a, &byte, 1, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
}
}
if (zip->total_number_empty_entry > zip->total_number_dir_entry) {
/* Make EmptyFile. */
r = enc_uint64(a, kEmptyFile);
if (r < 0)
return (r);
/* Write EmptyFile Size. */
r = enc_uint64(a, (zip->total_number_empty_entry + 7) >> 3);
if (r < 0)
return (r);
byte = 0;
mask = 0x80;
file = zip->file_list.first;
for (;file != NULL; file = file->next) {
if (file->size)
continue;
if (!file->dir)
byte |= mask;
mask >>= 1;
if (mask == 0) {
r = compress_out(a, &byte, 1, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
mask = 0x80;
byte = 0;
}
}
if (mask != 0x80) {
r = compress_out(a, &byte, 1, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
}
}
/* Make Name. */
r = enc_uint64(a, kName);
if (r < 0)
return (r);
/* Write Nume size. */
r = enc_uint64(a, zip->total_bytes_entry_name+1);
if (r < 0)
return (r);
/* Write dmy byte. */
r = enc_uint64(a, 0);
if (r < 0)
return (r);
file = zip->file_list.first;
for (;file != NULL; file = file->next) {
r = compress_out(a, file->utf16name, file->name_len+2,
ARCHIVE_Z_RUN);
if (r < 0)
return (r);
}
/* Make MTime. */
r = make_time(a, kMTime, MTIME_IS_SET, MTIME);
if (r < 0)
return (r);
/* Make CTime. */
r = make_time(a, kCTime, CTIME_IS_SET, CTIME);
if (r < 0)
return (r);
/* Make ATime. */
r = make_time(a, kATime, ATIME_IS_SET, ATIME);
if (r < 0)
return (r);
/* Make Attributes. */
r = enc_uint64(a, kAttributes);
if (r < 0)
return (r);
/* Write Attributes size. */
r = enc_uint64(a, 2 + zip->total_number_entry * 4);
if (r < 0)
return (r);
/* Write "All Are Defined". */
r = enc_uint64(a, 1);
if (r < 0)
return (r);
/* Write dmy byte. */
r = enc_uint64(a, 0);
if (r < 0)
return (r);
file = zip->file_list.first;
for (;file != NULL; file = file->next) {
/*
* High 16bits is unix mode.
* Low 16bits is Windows attributes.
*/
uint32_t encattr, attr;
if (file->dir)
attr = 0x8010;
else
attr = 0x8020;
if ((file->mode & 0222) == 0)
attr |= 1;/* Read Only. */
attr |= ((uint32_t)file->mode) << 16;
archive_le32enc(&encattr, attr);
r = compress_out(a, &encattr, 4, ARCHIVE_Z_RUN);
if (r < 0)
return (r);
}
/* Write End. */
r = enc_uint64(a, kEnd);
if (r < 0)
return (r);
/* Write End. */
r = enc_uint64(a, kEnd);
if (r < 0)
return (r);
return (ARCHIVE_OK);
}
static int
_7z_free(struct archive_write *a)
{
struct _7zip *zip = (struct _7zip *)a->format_data;
file_free_register(zip);
compression_end(&(a->archive), &(zip->stream));
free(zip->coder.props);
free(zip);
return (ARCHIVE_OK);
}
static int
file_cmp_node(const struct archive_rb_node *n1,
const struct archive_rb_node *n2)
{
struct file *f1 = (struct file *)n1;
struct file *f2 = (struct file *)n2;
if (f1->name_len == f2->name_len)
return (memcmp(f1->utf16name, f2->utf16name, f1->name_len));
return (f1->name_len > f2->name_len)?1:-1;
}
static int
file_cmp_key(const struct archive_rb_node *n, const void *key)
{
struct file *f = (struct file *)n;
return (f->name_len - *(const char *)key);
}
static int
file_new(struct archive_write *a, struct archive_entry *entry,
struct file **newfile)
{
struct _7zip *zip;
struct file *file;
const char *u16;
size_t u16len;
int ret = ARCHIVE_OK;
zip = (struct _7zip *)a->format_data;
*newfile = NULL;
file = calloc(1, sizeof(*file));
if (file == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory");
return (ARCHIVE_FATAL);
}
if (0 > archive_entry_pathname_l(entry, &u16, &u16len, zip->sconv)) {
if (errno == ENOMEM) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory for UTF-16LE");
return (ARCHIVE_FATAL);
}
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
"A filename cannot be converted to UTF-16LE;"
"You should disable making Joliet extension");
ret = ARCHIVE_WARN;
}
file->utf16name = malloc(u16len + 2);
if (file->utf16name == NULL) {
archive_set_error(&a->archive, ENOMEM,
"Can't allocate memory for Name");
return (ARCHIVE_FATAL);
}
memcpy(file->utf16name, u16, u16len);
file->utf16name[u16len+0] = 0;
file->utf16name[u16len+1] = 0;
file->name_len = u16len;
file->mode = archive_entry_mode(entry);
if (archive_entry_filetype(entry) == AE_IFREG)
file->size = archive_entry_size(entry);
else
archive_entry_set_size(entry, 0);
if (archive_entry_filetype(entry) == AE_IFDIR)
file->dir = 1;
else if (archive_entry_filetype(entry) == AE_IFLNK)
file->size = strlen(archive_entry_symlink(entry));
if (archive_entry_mtime_is_set(entry)) {
file->flg |= MTIME_IS_SET;
file->times[MTIME].time = archive_entry_mtime(entry);
file->times[MTIME].time_ns = archive_entry_mtime_nsec(entry);
}
if (archive_entry_atime_is_set(entry)) {
file->flg |= ATIME_IS_SET;
file->times[ATIME].time = archive_entry_atime(entry);
file->times[ATIME].time_ns = archive_entry_atime_nsec(entry);
}
if (archive_entry_ctime_is_set(entry)) {
file->flg |= CTIME_IS_SET;
file->times[CTIME].time = archive_entry_ctime(entry);
file->times[CTIME].time_ns = archive_entry_ctime_nsec(entry);
}
*newfile = file;
return (ret);
}
static void
file_free(struct file *file)
{
free(file->utf16name);
free(file);
}
static void
file_register(struct _7zip *zip, struct file *file)
{
file->next = NULL;
*zip->file_list.last = file;
zip->file_list.last = &(file->next);
}
static void
file_init_register(struct _7zip *zip)
{
zip->file_list.first = NULL;
zip->file_list.last = &(zip->file_list.first);
}
static void
file_free_register(struct _7zip *zip)
{
struct file *file, *file_next;
file = zip->file_list.first;
while (file != NULL) {
file_next = file->next;
file_free(file);
file = file_next;
}
}
static void
file_register_empty(struct _7zip *zip, struct file *file)
{
file->next = NULL;
*zip->empty_list.last = file;
zip->empty_list.last = &(file->next);
}
static void
file_init_register_empty(struct _7zip *zip)
{
zip->empty_list.first = NULL;
zip->empty_list.last = &(zip->empty_list.first);
}
#if !defined(HAVE_BZLIB_H) || !defined(BZ_CONFIG_ERROR) || !defined(HAVE_LZMA_H)
static int
compression_unsupported_encoder(struct archive *a,
struct la_zstream *lastrm, const char *name)
{
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"%s compression not supported on this platform", name);
lastrm->valid = 0;
lastrm->real_stream = NULL;
return (ARCHIVE_FAILED);
}
#endif
/*
* _7_COPY compressor.
*/
static int
compression_init_encoder_copy(struct archive *a, struct la_zstream *lastrm)
{
if (lastrm->valid)
compression_end(a, lastrm);
lastrm->valid = 1;
lastrm->code = compression_code_copy;
lastrm->end = compression_end_copy;
return (ARCHIVE_OK);
}
static int
compression_code_copy(struct archive *a,
struct la_zstream *lastrm, enum la_zaction action)
{
size_t bytes;
(void)a; /* UNUSED */
if (lastrm->avail_out > lastrm->avail_in)
bytes = lastrm->avail_in;
else
bytes = lastrm->avail_out;
if (bytes) {
memcpy(lastrm->next_out, lastrm->next_in, bytes);
lastrm->next_in += bytes;
lastrm->avail_in -= bytes;
lastrm->total_in += bytes;
lastrm->next_out += bytes;
lastrm->avail_out -= bytes;
lastrm->total_out += bytes;
}
if (action == ARCHIVE_Z_FINISH && lastrm->avail_in == 0)
return (ARCHIVE_EOF);
return (ARCHIVE_OK);
}
static int
compression_end_copy(struct archive *a, struct la_zstream *lastrm)
{
(void)a; /* UNUSED */
lastrm->valid = 0;
return (ARCHIVE_OK);
}
/*
* _7_DEFLATE compressor.
*/
#ifdef HAVE_ZLIB_H
static int
compression_init_encoder_deflate(struct archive *a,
struct la_zstream *lastrm, int level, int withheader)
{
z_stream *strm;
if (lastrm->valid)
compression_end(a, lastrm);
strm = calloc(1, sizeof(*strm));
if (strm == NULL) {
archive_set_error(a, ENOMEM,
"Can't allocate memory for gzip stream");
return (ARCHIVE_FATAL);
}
/* zlib.h is not const-correct, so we need this one bit
* of ugly hackery to convert a const * pointer to
* a non-const pointer. */
strm->next_in = (Bytef *)(uintptr_t)(const void *)lastrm->next_in;
strm->avail_in = lastrm->avail_in;
strm->total_in = lastrm->total_in;
strm->next_out = lastrm->next_out;
strm->avail_out = lastrm->avail_out;
strm->total_out = lastrm->total_out;
if (deflateInit2(strm, level, Z_DEFLATED,
(withheader)?15:-15,
8, Z_DEFAULT_STRATEGY) != Z_OK) {
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Internal error initializing compression library");
return (ARCHIVE_FATAL);
}
lastrm->real_stream = strm;
lastrm->valid = 1;
lastrm->code = compression_code_deflate;
lastrm->end = compression_end_deflate;
return (ARCHIVE_OK);
}
static int
compression_code_deflate(struct archive *a,
struct la_zstream *lastrm, enum la_zaction action)
{
z_stream *strm;
int r;
strm = (z_stream *)lastrm->real_stream;
/* zlib.h is not const-correct, so we need this one bit
* of ugly hackery to convert a const * pointer to
* a non-const pointer. */
strm->next_in = (Bytef *)(uintptr_t)(const void *)lastrm->next_in;
strm->avail_in = lastrm->avail_in;
strm->total_in = lastrm->total_in;
strm->next_out = lastrm->next_out;
strm->avail_out = lastrm->avail_out;
strm->total_out = lastrm->total_out;
r = deflate(strm,
(action == ARCHIVE_Z_FINISH)? Z_FINISH: Z_NO_FLUSH);
lastrm->next_in = strm->next_in;
lastrm->avail_in = strm->avail_in;
lastrm->total_in = strm->total_in;
lastrm->next_out = strm->next_out;
lastrm->avail_out = strm->avail_out;
lastrm->total_out = strm->total_out;
switch (r) {
case Z_OK:
return (ARCHIVE_OK);
case Z_STREAM_END:
return (ARCHIVE_EOF);
default:
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"GZip compression failed:"
" deflate() call returned status %d", r);
return (ARCHIVE_FATAL);
}
}
static int
compression_end_deflate(struct archive *a, struct la_zstream *lastrm)
{
z_stream *strm;
int r;
strm = (z_stream *)lastrm->real_stream;
r = deflateEnd(strm);
free(strm);
lastrm->real_stream = NULL;
lastrm->valid = 0;
if (r != Z_OK) {
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Failed to clean up compressor");
return (ARCHIVE_FATAL);
}
return (ARCHIVE_OK);
}
#else
static int
compression_init_encoder_deflate(struct archive *a,
struct la_zstream *lastrm, int level, int withheader)
{
(void) level; /* UNUSED */
(void) withheader; /* UNUSED */
if (lastrm->valid)
compression_end(a, lastrm);
return (compression_unsupported_encoder(a, lastrm, "deflate"));
}
#endif
/*
* _7_BZIP2 compressor.
*/
#if defined(HAVE_BZLIB_H) && defined(BZ_CONFIG_ERROR)
static int
compression_init_encoder_bzip2(struct archive *a,
struct la_zstream *lastrm, int level)
{
bz_stream *strm;
if (lastrm->valid)
compression_end(a, lastrm);
strm = calloc(1, sizeof(*strm));
if (strm == NULL) {
archive_set_error(a, ENOMEM,
"Can't allocate memory for bzip2 stream");
return (ARCHIVE_FATAL);
}
/* bzlib.h is not const-correct, so we need this one bit
* of ugly hackery to convert a const * pointer to
* a non-const pointer. */
strm->next_in = (char *)(uintptr_t)(const void *)lastrm->next_in;
strm->avail_in = lastrm->avail_in;
strm->total_in_lo32 = (uint32_t)(lastrm->total_in & 0xffffffff);
strm->total_in_hi32 = (uint32_t)(lastrm->total_in >> 32);
strm->next_out = (char *)lastrm->next_out;
strm->avail_out = lastrm->avail_out;
strm->total_out_lo32 = (uint32_t)(lastrm->total_out & 0xffffffff);
strm->total_out_hi32 = (uint32_t)(lastrm->total_out >> 32);
if (BZ2_bzCompressInit(strm, level, 0, 30) != BZ_OK) {
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Internal error initializing compression library");
return (ARCHIVE_FATAL);
}
lastrm->real_stream = strm;
lastrm->valid = 1;
lastrm->code = compression_code_bzip2;
lastrm->end = compression_end_bzip2;
return (ARCHIVE_OK);
}
static int
compression_code_bzip2(struct archive *a,
struct la_zstream *lastrm, enum la_zaction action)
{
bz_stream *strm;
int r;
strm = (bz_stream *)lastrm->real_stream;
/* bzlib.h is not const-correct, so we need this one bit
* of ugly hackery to convert a const * pointer to
* a non-const pointer. */
strm->next_in = (char *)(uintptr_t)(const void *)lastrm->next_in;
strm->avail_in = lastrm->avail_in;
strm->total_in_lo32 = (uint32_t)(lastrm->total_in & 0xffffffff);
strm->total_in_hi32 = (uint32_t)(lastrm->total_in >> 32);
strm->next_out = (char *)lastrm->next_out;
strm->avail_out = lastrm->avail_out;
strm->total_out_lo32 = (uint32_t)(lastrm->total_out & 0xffffffff);
strm->total_out_hi32 = (uint32_t)(lastrm->total_out >> 32);
r = BZ2_bzCompress(strm,
(action == ARCHIVE_Z_FINISH)? BZ_FINISH: BZ_RUN);
lastrm->next_in = (const unsigned char *)strm->next_in;
lastrm->avail_in = strm->avail_in;
lastrm->total_in =
(((uint64_t)(uint32_t)strm->total_in_hi32) << 32)
+ (uint64_t)(uint32_t)strm->total_in_lo32;
lastrm->next_out = (unsigned char *)strm->next_out;
lastrm->avail_out = strm->avail_out;
lastrm->total_out =
(((uint64_t)(uint32_t)strm->total_out_hi32) << 32)
+ (uint64_t)(uint32_t)strm->total_out_lo32;
switch (r) {
case BZ_RUN_OK: /* Non-finishing */
case BZ_FINISH_OK: /* Finishing: There's more work to do */
return (ARCHIVE_OK);
case BZ_STREAM_END: /* Finishing: all done */
/* Only occurs in finishing case */
return (ARCHIVE_EOF);
default:
/* Any other return value indicates an error */
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Bzip2 compression failed:"
" BZ2_bzCompress() call returned status %d", r);
return (ARCHIVE_FATAL);
}
}
static int
compression_end_bzip2(struct archive *a, struct la_zstream *lastrm)
{
bz_stream *strm;
int r;
strm = (bz_stream *)lastrm->real_stream;
r = BZ2_bzCompressEnd(strm);
free(strm);
lastrm->real_stream = NULL;
lastrm->valid = 0;
if (r != BZ_OK) {
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Failed to clean up compressor");
return (ARCHIVE_FATAL);
}
return (ARCHIVE_OK);
}
#else
static int
compression_init_encoder_bzip2(struct archive *a,
struct la_zstream *lastrm, int level)
{
(void) level; /* UNUSED */
if (lastrm->valid)
compression_end(a, lastrm);
return (compression_unsupported_encoder(a, lastrm, "bzip2"));
}
#endif
/*
* _7_LZMA1, _7_LZMA2 compressor.
*/
#if defined(HAVE_LZMA_H)
static int
compression_init_encoder_lzma(struct archive *a,
struct la_zstream *lastrm, int level, uint64_t filter_id)
{
static const lzma_stream lzma_init_data = LZMA_STREAM_INIT;
lzma_stream *strm;
lzma_filter *lzmafilters;
lzma_options_lzma lzma_opt;
int r;
if (lastrm->valid)
compression_end(a, lastrm);
strm = calloc(1, sizeof(*strm) + sizeof(*lzmafilters) * 2);
if (strm == NULL) {
archive_set_error(a, ENOMEM,
"Can't allocate memory for lzma stream");
return (ARCHIVE_FATAL);
}
lzmafilters = (lzma_filter *)(strm+1);
if (level > 6)
level = 6;
if (lzma_lzma_preset(&lzma_opt, level)) {
lastrm->real_stream = NULL;
archive_set_error(a, ENOMEM,
"Internal error initializing compression library");
return (ARCHIVE_FATAL);
}
lzmafilters[0].id = filter_id;
lzmafilters[0].options = &lzma_opt;
lzmafilters[1].id = LZMA_VLI_UNKNOWN;/* Terminate */
r = lzma_properties_size(&(lastrm->prop_size), lzmafilters);
if (r != LZMA_OK) {
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"lzma_properties_size failed");
return (ARCHIVE_FATAL);
}
if (lastrm->prop_size) {
lastrm->props = malloc(lastrm->prop_size);
if (lastrm->props == NULL) {
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ENOMEM,
"Cannot allocate memory");
return (ARCHIVE_FATAL);
}
r = lzma_properties_encode(lzmafilters, lastrm->props);
if (r != LZMA_OK) {
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"lzma_properties_encode failed");
return (ARCHIVE_FATAL);
}
}
*strm = lzma_init_data;
r = lzma_raw_encoder(strm, lzmafilters);
switch (r) {
case LZMA_OK:
lastrm->real_stream = strm;
lastrm->valid = 1;
lastrm->code = compression_code_lzma;
lastrm->end = compression_end_lzma;
r = ARCHIVE_OK;
break;
case LZMA_MEM_ERROR:
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ENOMEM,
"Internal error initializing compression library: "
"Cannot allocate memory");
r = ARCHIVE_FATAL;
break;
default:
free(strm);
lastrm->real_stream = NULL;
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"Internal error initializing compression library: "
"It's a bug in liblzma");
r = ARCHIVE_FATAL;
break;
}
return (r);
}
static int
compression_init_encoder_lzma1(struct archive *a,
struct la_zstream *lastrm, int level)
{
return compression_init_encoder_lzma(a, lastrm, level,
LZMA_FILTER_LZMA1);
}
static int
compression_init_encoder_lzma2(struct archive *a,
struct la_zstream *lastrm, int level)
{
return compression_init_encoder_lzma(a, lastrm, level,
LZMA_FILTER_LZMA2);
}
static int
compression_code_lzma(struct archive *a,
struct la_zstream *lastrm, enum la_zaction action)
{
lzma_stream *strm;
int r;
strm = (lzma_stream *)lastrm->real_stream;
strm->next_in = lastrm->next_in;
strm->avail_in = lastrm->avail_in;
strm->total_in = lastrm->total_in;
strm->next_out = lastrm->next_out;
strm->avail_out = lastrm->avail_out;
strm->total_out = lastrm->total_out;
r = lzma_code(strm,
(action == ARCHIVE_Z_FINISH)? LZMA_FINISH: LZMA_RUN);
lastrm->next_in = strm->next_in;
lastrm->avail_in = strm->avail_in;
lastrm->total_in = strm->total_in;
lastrm->next_out = strm->next_out;
lastrm->avail_out = strm->avail_out;
lastrm->total_out = strm->total_out;
switch (r) {
case LZMA_OK:
/* Non-finishing case */
return (ARCHIVE_OK);
case LZMA_STREAM_END:
/* This return can only occur in finishing case. */
return (ARCHIVE_EOF);
case LZMA_MEMLIMIT_ERROR:
archive_set_error(a, ENOMEM,
"lzma compression error:"
" %ju MiB would have been needed",
(uintmax_t)((lzma_memusage(strm) + 1024 * 1024 -1)
/ (1024 * 1024)));
return (ARCHIVE_FATAL);
default:
/* Any other return value indicates an error */
archive_set_error(a, ARCHIVE_ERRNO_MISC,
"lzma compression failed:"
" lzma_code() call returned status %d", r);
return (ARCHIVE_FATAL);
}
}
static int
compression_end_lzma(struct archive *a, struct la_zstream *lastrm)
{
lzma_stream *strm;
(void)a; /* UNUSED */
strm = (lzma_stream *)lastrm->real_stream;
lzma_end(strm);
free(strm);
lastrm->valid = 0;
lastrm->real_stream = NULL;
return (ARCHIVE_OK);
}
#else
static int
compression_init_encoder_lzma1(struct archive *a,
struct la_zstream *lastrm, int level)
{
(void) level; /* UNUSED */
if (lastrm->valid)
compression_end(a, lastrm);
return (compression_unsupported_encoder(a, lastrm, "lzma"));
}
static int
compression_init_encoder_lzma2(struct archive *a,
struct la_zstream *lastrm, int level)
{
(void) level; /* UNUSED */
if (lastrm->valid)
compression_end(a, lastrm);
return (compression_unsupported_encoder(a, lastrm, "lzma"));
}
#endif
/*
* _7_PPMD compressor.
*/
static void *
ppmd_alloc(void *p, size_t size)
{
(void)p;
return malloc(size);
}
static void
ppmd_free(void *p, void *address)
{
(void)p;
free(address);
}
static ISzAlloc g_szalloc = { ppmd_alloc, ppmd_free };
static void
ppmd_write(void *p, Byte b)
{
struct archive_write *a = ((IByteOut *)p)->a;
struct _7zip *zip = (struct _7zip *)(a->format_data);
struct la_zstream *lastrm = &(zip->stream);
struct ppmd_stream *strm;
if (lastrm->avail_out) {
*lastrm->next_out++ = b;
lastrm->avail_out--;
lastrm->total_out++;
return;
}
strm = (struct ppmd_stream *)lastrm->real_stream;
if (strm->buff_ptr < strm->buff_end) {
*strm->buff_ptr++ = b;
strm->buff_bytes++;
}
}
static int
compression_init_encoder_ppmd(struct archive *a,
struct la_zstream *lastrm, unsigned maxOrder, uint32_t msize)
{
struct ppmd_stream *strm;
uint8_t *props;
int r;
if (lastrm->valid)
compression_end(a, lastrm);
strm = calloc(1, sizeof(*strm));
if (strm == NULL) {
archive_set_error(a, ENOMEM,
"Can't allocate memory for PPMd");
return (ARCHIVE_FATAL);
}
strm->buff = malloc(32);
if (strm->buff == NULL) {
free(strm);
archive_set_error(a, ENOMEM,
"Can't allocate memory for PPMd");
return (ARCHIVE_FATAL);
}
strm->buff_ptr = strm->buff;
strm->buff_end = strm->buff + 32;
props = malloc(1+4);
if (props == NULL) {
free(strm->buff);
free(strm);
archive_set_error(a, ENOMEM,
"Coludn't allocate memory for PPMd");
return (ARCHIVE_FATAL);
}
props[0] = maxOrder;
archive_le32enc(props+1, msize);
__archive_ppmd7_functions.Ppmd7_Construct(&strm->ppmd7_context);
r = __archive_ppmd7_functions.Ppmd7_Alloc(
&strm->ppmd7_context, msize, &g_szalloc);
if (r == 0) {
free(strm->buff);
free(strm);
free(props);
archive_set_error(a, ENOMEM,
"Coludn't allocate memory for PPMd");
return (ARCHIVE_FATAL);
}
__archive_ppmd7_functions.Ppmd7_Init(&(strm->ppmd7_context), maxOrder);
strm->byteout.a = (struct archive_write *)a;
strm->byteout.Write = ppmd_write;
strm->range_enc.Stream = &(strm->byteout);
__archive_ppmd7_functions.Ppmd7z_RangeEnc_Init(&(strm->range_enc));
strm->stat = 0;
lastrm->real_stream = strm;
lastrm->valid = 1;
lastrm->code = compression_code_ppmd;
lastrm->end = compression_end_ppmd;
lastrm->prop_size = 5;
lastrm->props = props;
return (ARCHIVE_OK);
}
static int
compression_code_ppmd(struct archive *a,
struct la_zstream *lastrm, enum la_zaction action)
{
struct ppmd_stream *strm;
strm = (struct ppmd_stream *)lastrm->real_stream;
/* Copy encoded data if there are remaining bytes from previous call. */
if (strm->buff_bytes) {
uint8_t *p = strm->buff_ptr - strm->buff_bytes;
while (lastrm->avail_out && strm->buff_bytes) {
*lastrm->next_out++ = *p++;
lastrm->avail_out--;
lastrm->total_out++;
strm->buff_bytes--;
}
if (strm->buff_bytes)
return (ARCHIVE_OK);
if (strm->stat == 1)
return (ARCHIVE_EOF);
strm->buff_ptr = strm->buff;
}
while (lastrm->avail_in && lastrm->avail_out) {
__archive_ppmd7_functions.Ppmd7_EncodeSymbol(
&(strm->ppmd7_context), &(strm->range_enc),
*lastrm->next_in++);
lastrm->avail_in--;
lastrm->total_in++;
}
if (lastrm->avail_in == 0 && action == ARCHIVE_Z_FINISH) {
__archive_ppmd7_functions.Ppmd7z_RangeEnc_FlushData(
&(strm->range_enc));
strm->stat = 1;
/* Return EOF if there are no remaining bytes. */
if (strm->buff_bytes == 0)
return (ARCHIVE_EOF);
}
return (ARCHIVE_OK);
}
static int
compression_end_ppmd(struct archive *a, struct la_zstream *lastrm)
{
struct ppmd_stream *strm;
strm = (struct ppmd_stream *)lastrm->real_stream;
__archive_ppmd7_functions.Ppmd7_Free(&strm->ppmd7_context, &g_szalloc);
free(strm->buff);
free(strm);
lastrm->real_stream = NULL;
lastrm->valid = 0;
return (ARCHIVE_OK);
}
/*
* Universal compressor initializer.
*/
static int
_7z_compression_init_encoder(struct archive_write *a, unsigned compression,
int compression_level)
{
struct _7zip *zip;
int r;
zip = (struct _7zip *)a->format_data;
switch (compression) {
case _7Z_DEFLATE:
r = compression_init_encoder_deflate(
&(a->archive), &(zip->stream),
compression_level, 0);
break;
case _7Z_BZIP2:
r = compression_init_encoder_bzip2(
&(a->archive), &(zip->stream),
compression_level);
break;
case _7Z_LZMA1:
r = compression_init_encoder_lzma1(
&(a->archive), &(zip->stream),
compression_level);
break;
case _7Z_LZMA2:
r = compression_init_encoder_lzma2(
&(a->archive), &(zip->stream),
compression_level);
break;
case _7Z_PPMD:
r = compression_init_encoder_ppmd(
&(a->archive), &(zip->stream),
PPMD7_DEFAULT_ORDER, PPMD7_DEFAULT_MEM_SIZE);
break;
case _7Z_COPY:
default:
r = compression_init_encoder_copy(
&(a->archive), &(zip->stream));
break;
}
if (r == ARCHIVE_OK) {
zip->stream.total_in = 0;
zip->stream.next_out = zip->wbuff;
zip->stream.avail_out = sizeof(zip->wbuff);
zip->stream.total_out = 0;
}
return (r);
}
static int
compression_code(struct archive *a, struct la_zstream *lastrm,
enum la_zaction action)
{
if (lastrm->valid)
return (lastrm->code(a, lastrm, action));
return (ARCHIVE_OK);
}
static int
compression_end(struct archive *a, struct la_zstream *lastrm)
{
if (lastrm->valid) {
lastrm->prop_size = 0;
free(lastrm->props);
lastrm->props = NULL;
return (lastrm->end(a, lastrm));
}
return (ARCHIVE_OK);
}
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