| /* mz_strm.c -- Stream interface |
| Version 2.3.3, June 10, 2018 |
| part of the MiniZip project |
| |
| Copyright (C) 2010-2018 Nathan Moinvaziri |
| https://github.com/nmoinvaz/minizip |
| |
| 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 <stdlib.h> |
| #include <stdint.h> |
| #include <string.h> |
| |
| #include <time.h> |
| |
| #include "mz.h" |
| #include "mz_strm.h" |
| |
| /***************************************************************************/ |
| |
| int32_t mz_stream_open(void *stream, const char *path, int32_t mode) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| if (strm == NULL || strm->vtbl == NULL || strm->vtbl->open == NULL) |
| return MZ_STREAM_ERROR; |
| return strm->vtbl->open(strm, path, mode); |
| } |
| |
| int32_t mz_stream_is_open(void *stream) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| if (strm == NULL || strm->vtbl == NULL || strm->vtbl->is_open == NULL) |
| return MZ_STREAM_ERROR; |
| return strm->vtbl->is_open(strm); |
| } |
| |
| int32_t mz_stream_read(void *stream, void *buf, int32_t size) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| if (strm == NULL || strm->vtbl == NULL || strm->vtbl->read == NULL) |
| return MZ_PARAM_ERROR; |
| if (mz_stream_is_open(stream) != MZ_OK) |
| return MZ_STREAM_ERROR; |
| return strm->vtbl->read(strm, buf, size); |
| } |
| |
| static int32_t mz_stream_read_value(void *stream, uint64_t *value, int32_t len) |
| { |
| uint8_t buf[8]; |
| int32_t n = 0; |
| int32_t i = 0; |
| |
| *value = 0; |
| if (mz_stream_read(stream, buf, len) == len) |
| { |
| for (n = 0; n < len; n += 1, i += 8) |
| *value += ((uint64_t)buf[n]) << i; |
| } |
| else if (mz_stream_error(stream)) |
| return MZ_STREAM_ERROR; |
| else |
| return MZ_END_OF_STREAM; |
| |
| return MZ_OK; |
| } |
| |
| int32_t mz_stream_read_uint8(void *stream, uint8_t *value) |
| { |
| int32_t err = MZ_OK; |
| uint64_t value64 = 0; |
| |
| *value = 0; |
| err = mz_stream_read_value(stream, &value64, sizeof(uint8_t)); |
| if (err == MZ_OK) |
| *value = (uint8_t)value64; |
| return err; |
| } |
| |
| int32_t mz_stream_read_uint16(void *stream, uint16_t *value) |
| { |
| int32_t err = MZ_OK; |
| uint64_t value64 = 0; |
| |
| *value = 0; |
| err = mz_stream_read_value(stream, &value64, sizeof(uint16_t)); |
| if (err == MZ_OK) |
| *value = (uint16_t)value64; |
| return err; |
| } |
| |
| int32_t mz_stream_read_uint32(void *stream, uint32_t *value) |
| { |
| int32_t err = MZ_OK; |
| uint64_t value64 = 0; |
| |
| *value = 0; |
| err = mz_stream_read_value(stream, &value64, sizeof(uint32_t)); |
| if (err == MZ_OK) |
| *value = (uint32_t)value64; |
| return err; |
| } |
| |
| int32_t mz_stream_read_uint64(void *stream, uint64_t *value) |
| { |
| return mz_stream_read_value(stream, value, sizeof(uint64_t)); |
| } |
| |
| int32_t mz_stream_write(void *stream, const void *buf, int32_t size) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| if (size == 0) |
| return size; |
| if (strm == NULL || strm->vtbl == NULL || strm->vtbl->write == NULL) |
| return MZ_PARAM_ERROR; |
| if (mz_stream_is_open(stream) != MZ_OK) |
| return MZ_STREAM_ERROR; |
| return strm->vtbl->write(strm, buf, size); |
| } |
| |
| static int32_t mz_stream_write_value(void *stream, uint64_t value, int32_t len) |
| { |
| uint8_t buf[8]; |
| int32_t n = 0; |
| |
| for (n = 0; n < len; n += 1) |
| { |
| buf[n] = (uint8_t)(value & 0xff); |
| value >>= 8; |
| } |
| |
| if (value != 0) |
| { |
| // Data overflow - hack for ZIP64 (X Roche) |
| for (n = 0; n < len; n += 1) |
| buf[n] = 0xff; |
| } |
| |
| if (mz_stream_write(stream, buf, len) != len) |
| return MZ_STREAM_ERROR; |
| |
| return MZ_OK; |
| } |
| |
| int32_t mz_stream_write_uint8(void *stream, uint8_t value) |
| { |
| return mz_stream_write_value(stream, value, sizeof(uint8_t)); |
| } |
| |
| int32_t mz_stream_write_uint16(void *stream, uint16_t value) |
| { |
| return mz_stream_write_value(stream, value, sizeof(uint16_t)); |
| } |
| |
| int32_t mz_stream_write_uint32(void *stream, uint32_t value) |
| { |
| return mz_stream_write_value(stream, value, sizeof(uint32_t)); |
| } |
| |
| int32_t mz_stream_write_uint64(void *stream, uint64_t value) |
| { |
| return mz_stream_write_value(stream, value, sizeof(uint64_t)); |
| } |
| |
| int32_t mz_stream_copy(void *target, void *source, int32_t len) |
| { |
| uint8_t buf[INT16_MAX]; |
| int32_t bytes_to_copy = 0; |
| int32_t read = 0; |
| int32_t written = 0; |
| |
| while (len > 0) |
| { |
| bytes_to_copy = len; |
| if (bytes_to_copy > (int32_t)sizeof(buf)) |
| bytes_to_copy = sizeof(buf); |
| read = mz_stream_read(source, buf, bytes_to_copy); |
| if (read < 0) |
| return MZ_STREAM_ERROR; |
| written = mz_stream_write(target, buf, read); |
| if (written != read) |
| return MZ_STREAM_ERROR; |
| len -= read; |
| } |
| |
| return MZ_OK; |
| } |
| |
| int64_t mz_stream_tell(void *stream) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| if (strm == NULL || strm->vtbl == NULL || strm->vtbl->tell == NULL) |
| return MZ_PARAM_ERROR; |
| if (mz_stream_is_open(stream) != MZ_OK) |
| return MZ_STREAM_ERROR; |
| return strm->vtbl->tell(strm); |
| } |
| |
| int32_t mz_stream_seek(void *stream, int64_t offset, int32_t origin) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| if (strm == NULL || strm->vtbl == NULL || strm->vtbl->seek == NULL) |
| return MZ_PARAM_ERROR; |
| if (mz_stream_is_open(stream) != MZ_OK) |
| return MZ_STREAM_ERROR; |
| return strm->vtbl->seek(strm, offset, origin); |
| } |
| |
| int32_t mz_stream_close(void *stream) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| if (strm == NULL || strm->vtbl == NULL || strm->vtbl->close == NULL) |
| return MZ_PARAM_ERROR; |
| if (mz_stream_is_open(stream) != MZ_OK) |
| return MZ_STREAM_ERROR; |
| return strm->vtbl->close(strm); |
| } |
| |
| int32_t mz_stream_error(void *stream) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| if (strm == NULL || strm->vtbl == NULL || strm->vtbl->error == NULL) |
| return MZ_PARAM_ERROR; |
| return strm->vtbl->error(strm); |
| } |
| |
| int32_t mz_stream_set_base(void *stream, void *base) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| strm->base = (mz_stream *)base; |
| return MZ_OK; |
| } |
| |
| int32_t mz_stream_get_prop_int64(void *stream, int32_t prop, int64_t *value) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| if (strm == NULL || strm->vtbl == NULL || strm->vtbl->get_prop_int64 == NULL) |
| return MZ_PARAM_ERROR; |
| return strm->vtbl->get_prop_int64(stream, prop, value); |
| } |
| |
| int32_t mz_stream_set_prop_int64(void *stream, int32_t prop, int64_t value) |
| { |
| mz_stream *strm = (mz_stream *)stream; |
| if (strm == NULL || strm->vtbl == NULL || strm->vtbl->set_prop_int64 == NULL) |
| return MZ_PARAM_ERROR; |
| return strm->vtbl->set_prop_int64(stream, prop, value); |
| } |
| |
| void *mz_stream_create(void **stream, mz_stream_vtbl *vtbl) |
| { |
| if (stream == NULL) |
| return NULL; |
| if (vtbl == NULL || vtbl->create == NULL) |
| return NULL; |
| return vtbl->create(stream); |
| } |
| |
| void mz_stream_delete(void **stream) |
| { |
| mz_stream *strm = NULL; |
| if (stream == NULL) |
| return; |
| strm = (mz_stream *)*stream; |
| if (strm != NULL && strm->vtbl != NULL && strm->vtbl->destroy != NULL) |
| strm->vtbl->destroy(stream); |
| *stream = NULL; |
| } |
| |
| /***************************************************************************/ |
| |
| static mz_stream_vtbl mz_stream_crc32_vtbl = { |
| mz_stream_crc32_open, |
| mz_stream_crc32_is_open, |
| mz_stream_crc32_read, |
| mz_stream_crc32_write, |
| mz_stream_crc32_tell, |
| mz_stream_crc32_seek, |
| mz_stream_crc32_close, |
| mz_stream_crc32_error, |
| mz_stream_crc32_create, |
| mz_stream_crc32_delete, |
| mz_stream_crc32_get_prop_int64, |
| NULL |
| }; |
| |
| /***************************************************************************/ |
| |
| typedef struct mz_stream_crc32_s { |
| mz_stream stream; |
| int8_t initialized; |
| int64_t value; |
| int64_t total_in; |
| int64_t total_out; |
| |
| mz_stream_crc32_update update; |
| } mz_stream_crc32; |
| |
| /***************************************************************************/ |
| |
| int32_t mz_stream_crc32_open(void *stream, const char *path, int32_t mode) |
| { |
| mz_stream_crc32 *crc32 = (mz_stream_crc32 *)stream; |
| |
| MZ_UNUSED(path); |
| MZ_UNUSED(mode); |
| |
| crc32->initialized = 1; |
| crc32->value = 0; |
| return MZ_OK; |
| } |
| |
| int32_t mz_stream_crc32_is_open(void *stream) |
| { |
| mz_stream_crc32 *crc32 = (mz_stream_crc32 *)stream; |
| if (crc32->initialized != 1) |
| return MZ_STREAM_ERROR; |
| return MZ_OK; |
| } |
| |
| int32_t mz_stream_crc32_read(void *stream, void *buf, int32_t size) |
| { |
| mz_stream_crc32 *crc32x = (mz_stream_crc32 *)stream; |
| int32_t read = 0; |
| read = mz_stream_read(crc32x->stream.base, buf, size); |
| if (read > 0) |
| crc32x->value = crc32x->update(crc32x->value, buf, read); |
| crc32x->total_in += read; |
| return read; |
| } |
| |
| int32_t mz_stream_crc32_write(void *stream, const void *buf, int32_t size) |
| { |
| mz_stream_crc32 *crc32x = (mz_stream_crc32 *)stream; |
| int32_t written = 0; |
| crc32x->value = crc32x->update(crc32x->value, buf, size); |
| written = mz_stream_write(crc32x->stream.base, buf, size); |
| crc32x->total_out += written; |
| return written; |
| } |
| |
| int64_t mz_stream_crc32_tell(void *stream) |
| { |
| mz_stream_crc32 *crc32 = (mz_stream_crc32 *)stream; |
| return mz_stream_tell(crc32->stream.base); |
| } |
| |
| int32_t mz_stream_crc32_seek(void *stream, int64_t offset, int32_t origin) |
| { |
| mz_stream_crc32 *crc32 = (mz_stream_crc32 *)stream; |
| crc32->value = 0; |
| return mz_stream_seek(crc32->stream.base, offset, origin); |
| } |
| |
| int32_t mz_stream_crc32_close(void *stream) |
| { |
| mz_stream_crc32 *crc32 = (mz_stream_crc32 *)stream; |
| crc32->initialized = 0; |
| return MZ_OK; |
| } |
| |
| int32_t mz_stream_crc32_error(void *stream) |
| { |
| mz_stream_crc32 *crc32 = (mz_stream_crc32 *)stream; |
| return mz_stream_error(crc32->stream.base); |
| } |
| |
| int32_t mz_stream_crc32_get_value(void *stream) |
| { |
| mz_stream_crc32 *crc32 = (mz_stream_crc32 *)stream; |
| return (int32_t)crc32->value; |
| } |
| |
| int32_t mz_stream_crc32_get_prop_int64(void *stream, int32_t prop, int64_t *value) |
| { |
| mz_stream_crc32 *crc32 = (mz_stream_crc32 *)stream; |
| switch (prop) |
| { |
| case MZ_STREAM_PROP_TOTAL_IN: |
| *value = crc32->total_in; |
| return MZ_OK; |
| case MZ_STREAM_PROP_TOTAL_OUT: |
| *value = crc32->total_out; |
| return MZ_OK; |
| } |
| return MZ_EXIST_ERROR; |
| } |
| |
| int32_t mz_stream_crc32_set_update_func(void *stream, mz_stream_crc32_update update) |
| { |
| mz_stream_crc32 *crc32 = (mz_stream_crc32 *)stream; |
| crc32->update = update; |
| return MZ_OK; |
| } |
| |
| void *mz_stream_crc32_create(void **stream) |
| { |
| mz_stream_crc32 *crc32 = NULL; |
| |
| crc32 = (mz_stream_crc32 *)MZ_ALLOC(sizeof(mz_stream_crc32)); |
| if (crc32 != NULL) |
| { |
| memset(crc32, 0, sizeof(mz_stream_crc32)); |
| crc32->stream.vtbl = &mz_stream_crc32_vtbl; |
| } |
| if (stream != NULL) |
| *stream = crc32; |
| |
| return crc32; |
| } |
| |
| void mz_stream_crc32_delete(void **stream) |
| { |
| mz_stream_crc32 *crc32 = NULL; |
| if (stream == NULL) |
| return; |
| crc32 = (mz_stream_crc32 *)*stream; |
| if (crc32 != NULL) |
| MZ_FREE(crc32); |
| *stream = NULL; |
| } |
| |
| void *mz_stream_crc32_get_interface(void) |
| { |
| return (void *)&mz_stream_crc32_vtbl; |
| } |
| |
| /***************************************************************************/ |
| |
| typedef struct mz_stream_raw_s { |
| mz_stream stream; |
| int64_t total_in; |
| int64_t total_out; |
| int64_t max_total_in; |
| } mz_stream_raw; |
| |
| /***************************************************************************/ |
| |
| int32_t mz_stream_raw_open(void *stream, const char *path, int32_t mode) |
| { |
| MZ_UNUSED(stream); |
| MZ_UNUSED(path); |
| MZ_UNUSED(mode); |
| |
| return MZ_OK; |
| } |
| |
| int32_t mz_stream_raw_is_open(void *stream) |
| { |
| mz_stream_raw *raw = (mz_stream_raw *)stream; |
| return mz_stream_is_open(raw->stream.base); |
| } |
| |
| int32_t mz_stream_raw_read(void *stream, void *buf, int32_t size) |
| { |
| mz_stream_raw *raw = (mz_stream_raw *)stream; |
| int32_t bytes_to_read = size; |
| int32_t read = 0; |
| |
| if (raw->max_total_in > 0) |
| { |
| if ((raw->max_total_in - raw->total_in) < size) |
| bytes_to_read = (int32_t)(raw->max_total_in - raw->total_in); |
| } |
| |
| read = mz_stream_read(raw->stream.base, buf, bytes_to_read); |
| |
| if (read > 0) |
| raw->total_in += read; |
| |
| return read; |
| } |
| |
| int32_t mz_stream_raw_write(void *stream, const void *buf, int32_t size) |
| { |
| mz_stream_raw *raw = (mz_stream_raw *)stream; |
| int32_t written = mz_stream_write(raw->stream.base, buf, size); |
| if (written > 0) |
| raw->total_out += written; |
| return written; |
| } |
| |
| int64_t mz_stream_raw_tell(void *stream) |
| { |
| mz_stream_raw *raw = (mz_stream_raw *)stream; |
| return mz_stream_tell(raw->stream.base); |
| } |
| |
| int32_t mz_stream_raw_seek(void *stream, int64_t offset, int32_t origin) |
| { |
| mz_stream_raw *raw = (mz_stream_raw *)stream; |
| return mz_stream_seek(raw->stream.base, offset, origin); |
| } |
| |
| int32_t mz_stream_raw_close(void *stream) |
| { |
| MZ_UNUSED(stream); |
| |
| return MZ_OK; |
| } |
| |
| int32_t mz_stream_raw_error(void *stream) |
| { |
| mz_stream_raw *raw = (mz_stream_raw *)stream; |
| return mz_stream_error(raw->stream.base); |
| } |
| |
| int32_t mz_stream_raw_get_prop_int64(void *stream, int32_t prop, int64_t *value) |
| { |
| mz_stream_raw *raw = (mz_stream_raw *)stream; |
| switch (prop) |
| { |
| case MZ_STREAM_PROP_TOTAL_IN: |
| *value = raw->total_in; |
| return MZ_OK; |
| case MZ_STREAM_PROP_TOTAL_OUT: |
| *value = raw->total_out; |
| return MZ_OK; |
| } |
| return MZ_EXIST_ERROR; |
| } |
| |
| int32_t mz_stream_raw_set_prop_int64(void *stream, int32_t prop, int64_t value) |
| { |
| mz_stream_raw *raw = (mz_stream_raw *)stream; |
| switch (prop) |
| { |
| case MZ_STREAM_PROP_TOTAL_IN_MAX: |
| raw->max_total_in = value; |
| return MZ_OK; |
| } |
| return MZ_EXIST_ERROR; |
| } |
| |
| /***************************************************************************/ |
| |
| static mz_stream_vtbl mz_stream_raw_vtbl = { |
| mz_stream_raw_open, |
| mz_stream_raw_is_open, |
| mz_stream_raw_read, |
| mz_stream_raw_write, |
| mz_stream_raw_tell, |
| mz_stream_raw_seek, |
| mz_stream_raw_close, |
| mz_stream_raw_error, |
| mz_stream_raw_create, |
| mz_stream_raw_delete, |
| mz_stream_raw_get_prop_int64, |
| mz_stream_raw_set_prop_int64 |
| }; |
| |
| /***************************************************************************/ |
| |
| void *mz_stream_raw_create(void **stream) |
| { |
| mz_stream_raw *raw = NULL; |
| |
| raw = (mz_stream_raw *)MZ_ALLOC(sizeof(mz_stream_raw)); |
| if (raw != NULL) |
| { |
| memset(raw, 0, sizeof(mz_stream_raw)); |
| raw->stream.vtbl = &mz_stream_raw_vtbl; |
| } |
| if (stream != NULL) |
| *stream = raw; |
| |
| return raw; |
| } |
| |
| void mz_stream_raw_delete(void **stream) |
| { |
| mz_stream_raw *raw = NULL; |
| if (stream == NULL) |
| return; |
| raw = (mz_stream_raw *)*stream; |
| if (raw != NULL) |
| MZ_FREE(raw); |
| *stream = NULL; |
| } |