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463 lines (374 loc) · 13 KB
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/* mz_strm_lzma.c -- Stream for lzma inflate/deflate
part of the minizip-ng project
Copyright (C) Nathan Moinvaziri
https://github.com/zlib-ng/minizip-ng
This program is distributed under the terms of the same license as zlib.
See the accompanying LICENSE file for the full text of the license.
*/
#include "mz.h"
#include "mz_strm.h"
#include "mz_strm_lzma.h"
#include "lzma.h"
/***************************************************************************/
#define MZ_LZMA_MAGIC_SIZE (4)
#define MZ_LZMA_ZIP_HEADER_SIZE (5)
#define MZ_LZMA_ALONE_HEADER_SIZE (MZ_LZMA_ZIP_HEADER_SIZE + 8)
/***************************************************************************/
static mz_stream_vtbl mz_stream_lzma_vtbl = {
mz_stream_lzma_open,
mz_stream_lzma_is_open,
mz_stream_lzma_read,
mz_stream_lzma_write,
mz_stream_lzma_tell,
mz_stream_lzma_seek,
mz_stream_lzma_close,
mz_stream_lzma_error,
mz_stream_lzma_create,
mz_stream_lzma_delete,
mz_stream_lzma_get_prop_int64,
mz_stream_lzma_set_prop_int64
};
/***************************************************************************/
typedef struct mz_stream_lzma_s {
mz_stream stream;
lzma_stream lstream;
int32_t mode;
int32_t error;
uint8_t buffer[INT16_MAX];
int32_t buffer_len;
int64_t total_in;
int64_t total_out;
int64_t max_total_in;
int64_t max_total_out;
int8_t initialized;
int8_t header;
int32_t header_size;
uint32_t preset;
int16_t method;
} mz_stream_lzma;
/***************************************************************************/
int32_t mz_stream_lzma_open(void *stream, const char *path, int32_t mode) {
mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
lzma_filter filters[LZMA_FILTERS_MAX + 1];
lzma_options_lzma opt_lzma;
uint32_t size = 0;
uint8_t major = 0;
uint8_t minor = 0;
MZ_UNUSED(path);
memset(&opt_lzma, 0, sizeof(opt_lzma));
lzma->lstream.total_in = 0;
lzma->lstream.total_out = 0;
lzma->total_in = 0;
lzma->total_out = 0;
lzma->header = 0;
if (mode & MZ_OPEN_MODE_WRITE) {
#ifdef MZ_ZIP_NO_COMPRESSION
MZ_UNUSED(filters);
MZ_UNUSED(major);
MZ_UNUSED(minor);
return MZ_SUPPORT_ERROR;
#else
lzma->lstream.next_out = lzma->buffer;
lzma->lstream.avail_out = sizeof(lzma->buffer);
if (lzma_lzma_preset(&opt_lzma, lzma->preset))
return MZ_OPEN_ERROR;
memset(&filters, 0, sizeof(filters));
if (lzma->method == MZ_COMPRESS_METHOD_LZMA)
filters[0].id = LZMA_FILTER_LZMA1;
else if (lzma->method == MZ_COMPRESS_METHOD_XZ)
filters[0].id = LZMA_FILTER_LZMA2;
filters[0].options = &opt_lzma;
filters[1].id = LZMA_VLI_UNKNOWN;
lzma_properties_size(&size, (lzma_filter *)&filters);
if (lzma->method == MZ_COMPRESS_METHOD_LZMA) {
mz_stream_write_uint8(lzma->stream.base, LZMA_VERSION_MAJOR);
mz_stream_write_uint8(lzma->stream.base, LZMA_VERSION_MINOR);
mz_stream_write_uint16(lzma->stream.base, (uint16_t)size);
lzma->header = 1;
lzma->total_out += MZ_LZMA_MAGIC_SIZE;
lzma->error = lzma_alone_encoder(&lzma->lstream, &opt_lzma);
} else if (lzma->method == MZ_COMPRESS_METHOD_XZ)
lzma->error = lzma_stream_encoder(&lzma->lstream, filters, LZMA_CHECK_CRC64);
#endif
} else if (mode & MZ_OPEN_MODE_READ) {
#ifdef MZ_ZIP_NO_DECOMPRESSION
MZ_UNUSED(filters);
MZ_UNUSED(major);
MZ_UNUSED(minor);
return MZ_SUPPORT_ERROR;
#else
lzma->lstream.next_in = lzma->buffer;
lzma->lstream.avail_in = 0;
if (lzma->method == MZ_COMPRESS_METHOD_LZMA) {
mz_stream_read_uint8(lzma->stream.base, &major);
mz_stream_read_uint8(lzma->stream.base, &minor);
mz_stream_read_uint16(lzma->stream.base, (uint16_t *)&size);
lzma->header = 1;
lzma->total_in += MZ_LZMA_MAGIC_SIZE;
lzma->error = lzma_alone_decoder(&lzma->lstream, UINT64_MAX);
} else if (lzma->method == MZ_COMPRESS_METHOD_XZ)
lzma->error = lzma_stream_decoder(&lzma->lstream, UINT64_MAX, 0);
#endif
}
if (lzma->error != LZMA_OK)
return MZ_OPEN_ERROR;
lzma->initialized = 1;
lzma->mode = mode;
return MZ_OK;
}
int32_t mz_stream_lzma_is_open(void *stream) {
mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
if (lzma->initialized != 1)
return MZ_OPEN_ERROR;
return MZ_OK;
}
int32_t mz_stream_lzma_read(void *stream, void *buf, int32_t size) {
#ifdef MZ_ZIP_NO_DECOMPRESSION
MZ_UNUSED(stream);
MZ_UNUSED(buf);
MZ_UNUSED(size);
return MZ_SUPPORT_ERROR;
#else
mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
uint64_t total_in_before = 0;
uint64_t total_out_before = 0;
uint64_t total_in_after = 0;
uint64_t total_out_after = 0;
int32_t total_in = 0;
int32_t total_out = 0;
int32_t in_bytes = 0;
int32_t out_bytes = 0;
int32_t bytes_to_read = sizeof(lzma->buffer);
int32_t read = 0;
int32_t err = LZMA_OK;
lzma->lstream.next_out = (uint8_t *)buf;
lzma->lstream.avail_out = (size_t)size;
do {
if (lzma->lstream.avail_in == 0) {
if (lzma->max_total_in > 0) {
if ((int64_t)bytes_to_read > (lzma->max_total_in - lzma->total_in))
bytes_to_read = (int32_t)(lzma->max_total_in - lzma->total_in);
}
if (lzma->header) {
bytes_to_read = MZ_LZMA_ZIP_HEADER_SIZE - lzma->header_size;
}
read = mz_stream_read(lzma->stream.base, lzma->buffer, bytes_to_read);
if (read < 0)
return read;
/* Write uncompressed size for lzma alone header not in zip format */
if (lzma->header) {
lzma->header_size += read;
if (lzma->header_size == MZ_LZMA_ZIP_HEADER_SIZE) {
uint64_t uncompressed_size = UINT64_MAX;
memcpy(lzma->buffer + MZ_LZMA_ZIP_HEADER_SIZE, &uncompressed_size, sizeof(uncompressed_size));
read += sizeof(uncompressed_size);
bytes_to_read = sizeof(lzma->buffer);
lzma->total_in -= sizeof(uncompressed_size);
lzma->header = 0;
}
}
lzma->lstream.next_in = lzma->buffer;
lzma->lstream.avail_in = (size_t)read;
}
total_in_before = lzma->lstream.avail_in;
total_out_before = lzma->lstream.total_out;
err = lzma_code(&lzma->lstream, LZMA_RUN);
total_in_after = lzma->lstream.avail_in;
total_out_after = lzma->lstream.total_out;
if ((lzma->max_total_out != -1) && (int64_t)total_out_after > lzma->max_total_out)
total_out_after = (uint64_t)lzma->max_total_out;
in_bytes = (int32_t)(total_in_before - total_in_after);
out_bytes = (int32_t)(total_out_after - total_out_before);
total_in += in_bytes;
total_out += out_bytes;
lzma->total_in += in_bytes;
lzma->total_out += out_bytes;
if (err == LZMA_STREAM_END)
break;
if (err != LZMA_OK) {
lzma->error = err;
break;
}
} while (lzma->lstream.avail_out > 0);
MZ_UNUSED(total_in);
if (lzma->error != 0)
return MZ_DATA_ERROR;
return total_out;
#endif
}
#ifndef MZ_ZIP_NO_COMPRESSION
static int32_t mz_stream_lzma_flush(void *stream) {
mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
int32_t buffer_len = lzma->buffer_len;
uint8_t *buffer = lzma->buffer;
/* Skip writing lzma_alone header uncompressed size for zip format */
if (lzma->header) {
uint64_t uncompressed_size = 0;
if (lzma->buffer_len < MZ_LZMA_ALONE_HEADER_SIZE)
return MZ_OK;
if (mz_stream_write(lzma->stream.base, buffer, MZ_LZMA_ZIP_HEADER_SIZE) != MZ_LZMA_ZIP_HEADER_SIZE)
return MZ_WRITE_ERROR;
buffer += MZ_LZMA_ALONE_HEADER_SIZE;
buffer_len -= MZ_LZMA_ALONE_HEADER_SIZE;
lzma->buffer_len -= sizeof(uncompressed_size);
lzma->total_out -= sizeof(uncompressed_size);
lzma->header = 0;
}
if (mz_stream_write(lzma->stream.base, buffer, buffer_len) != buffer_len)
return MZ_WRITE_ERROR;
return MZ_OK;
}
static int32_t mz_stream_lzma_code(void *stream, int32_t flush) {
mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
uint64_t total_out_before = 0;
uint64_t total_out_after = 0;
uint32_t out_bytes = 0;
int32_t err = LZMA_OK;
do {
if (lzma->lstream.avail_out == 0) {
err = mz_stream_lzma_flush(lzma);
if (err != MZ_OK)
return err;
lzma->lstream.avail_out = sizeof(lzma->buffer);
lzma->lstream.next_out = lzma->buffer;
lzma->buffer_len = 0;
}
total_out_before = lzma->lstream.total_out;
err = lzma_code(&lzma->lstream, (lzma_action)flush);
total_out_after = lzma->lstream.total_out;
out_bytes = (uint32_t)(total_out_after - total_out_before);
if (err != LZMA_OK && err != LZMA_STREAM_END) {
lzma->error = err;
return MZ_DATA_ERROR;
}
lzma->buffer_len += out_bytes;
lzma->total_out += out_bytes;
} while ((lzma->lstream.avail_in > 0) || (flush == LZMA_FINISH && err == LZMA_OK));
return MZ_OK;
}
#endif
int32_t mz_stream_lzma_write(void *stream, const void *buf, int32_t size) {
#ifdef MZ_ZIP_NO_COMPRESSION
MZ_UNUSED(stream);
MZ_UNUSED(buf);
MZ_UNUSED(size);
return MZ_SUPPORT_ERROR;
#else
mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
int32_t err = MZ_OK;
lzma->lstream.next_in = (uint8_t *)(intptr_t)buf;
lzma->lstream.avail_in = (size_t)size;
err = mz_stream_lzma_code(stream, LZMA_RUN);
if (err != MZ_OK) {
return err;
}
lzma->total_in += size;
return size;
#endif
}
int64_t mz_stream_lzma_tell(void *stream) {
MZ_UNUSED(stream);
return MZ_TELL_ERROR;
}
int32_t mz_stream_lzma_seek(void *stream, int64_t offset, int32_t origin) {
MZ_UNUSED(stream);
MZ_UNUSED(offset);
MZ_UNUSED(origin);
return MZ_SEEK_ERROR;
}
int32_t mz_stream_lzma_close(void *stream) {
mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
if (lzma->mode & MZ_OPEN_MODE_WRITE) {
#ifdef MZ_ZIP_NO_COMPRESSION
return MZ_SUPPORT_ERROR;
#else
mz_stream_lzma_code(stream, LZMA_FINISH);
mz_stream_lzma_flush(stream);
lzma_end(&lzma->lstream);
#endif
} else if (lzma->mode & MZ_OPEN_MODE_READ) {
#ifdef MZ_ZIP_NO_DECOMPRESSION
return MZ_SUPPORT_ERROR;
#else
lzma_end(&lzma->lstream);
#endif
}
lzma->initialized = 0;
if (lzma->error != LZMA_OK)
return MZ_CLOSE_ERROR;
return MZ_OK;
}
int32_t mz_stream_lzma_error(void *stream) {
mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
return lzma->error;
}
int32_t mz_stream_lzma_get_prop_int64(void *stream, int32_t prop, int64_t *value) {
mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
switch (prop) {
case MZ_STREAM_PROP_TOTAL_IN:
*value = lzma->total_in;
break;
case MZ_STREAM_PROP_TOTAL_IN_MAX:
*value = lzma->max_total_in;
break;
case MZ_STREAM_PROP_TOTAL_OUT:
*value = lzma->total_out;
break;
case MZ_STREAM_PROP_TOTAL_OUT_MAX:
*value = lzma->max_total_out;
break;
case MZ_STREAM_PROP_HEADER_SIZE:
*value = MZ_LZMA_MAGIC_SIZE;
break;
default:
return MZ_EXIST_ERROR;
}
return MZ_OK;
}
int32_t mz_stream_lzma_set_prop_int64(void *stream, int32_t prop, int64_t value) {
mz_stream_lzma *lzma = (mz_stream_lzma *)stream;
switch (prop) {
case MZ_STREAM_PROP_COMPRESS_LEVEL:
if (value == MZ_COMPRESS_LEVEL_DEFAULT)
lzma->preset = LZMA_PRESET_DEFAULT;
else
lzma->preset = (uint32_t)value;
break;
case MZ_STREAM_PROP_COMPRESS_METHOD:
lzma->method = (int16_t)value;
break;
case MZ_STREAM_PROP_TOTAL_IN_MAX:
lzma->max_total_in = value;
break;
case MZ_STREAM_PROP_TOTAL_OUT_MAX:
if (value < -1)
return MZ_PARAM_ERROR;
lzma->max_total_out = value;
break;
default:
return MZ_EXIST_ERROR;
}
return MZ_OK;
}
void *mz_stream_lzma_create(void) {
mz_stream_lzma *lzma = (mz_stream_lzma *)calloc(1, sizeof(mz_stream_lzma));
if (lzma) {
lzma->stream.vtbl = &mz_stream_lzma_vtbl;
lzma->method = MZ_COMPRESS_METHOD_LZMA;
lzma->preset = LZMA_PRESET_DEFAULT;
lzma->max_total_out = -1;
}
return lzma;
}
void mz_stream_lzma_delete(void **stream) {
mz_stream_lzma *lzma = NULL;
if (!stream)
return;
lzma = (mz_stream_lzma *)*stream;
if (lzma)
free(lzma);
*stream = NULL;
}
void *mz_stream_lzma_get_interface(void) {
return (void *)&mz_stream_lzma_vtbl;
}