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-rw-r--r--erts/emulator/Makefile.in6
-rw-r--r--erts/emulator/drivers/common/zlib_drv.c792
-rw-r--r--erts/emulator/nifs/common/zlib_nif.c998
3 files changed, 1001 insertions, 795 deletions
diff --git a/erts/emulator/Makefile.in b/erts/emulator/Makefile.in
index cc1fa571df..1916b97a89 100644
--- a/erts/emulator/Makefile.in
+++ b/erts/emulator/Makefile.in
@@ -819,14 +819,15 @@ RUN_OBJS = \
$(OBJDIR)/erl_io_queue.o
LTTNG_OBJS = $(OBJDIR)/erlang_lttng.o
-NIF_OBJS = $(OBJDIR)/erl_tracer_nif.o
+NIF_OBJS = \
+ $(OBJDIR)/erl_tracer_nif.o \
+ $(OBJDIR)/zlib_nif.o
ifeq ($(TARGET),win32)
DRV_OBJS = \
$(OBJDIR)/registry_drv.o \
$(OBJDIR)/efile_drv.o \
$(OBJDIR)/inet_drv.o \
- $(OBJDIR)/zlib_drv.o \
$(OBJDIR)/ram_file_drv.o \
$(OBJDIR)/ttsl_drv.o
OS_OBJS = \
@@ -856,7 +857,6 @@ OS_OBJS = \
DRV_OBJS = \
$(OBJDIR)/efile_drv.o \
$(OBJDIR)/inet_drv.o \
- $(OBJDIR)/zlib_drv.o \
$(OBJDIR)/ram_file_drv.o \
$(OBJDIR)/ttsl_drv.o
endif
diff --git a/erts/emulator/drivers/common/zlib_drv.c b/erts/emulator/drivers/common/zlib_drv.c
deleted file mode 100644
index e342e414b5..0000000000
--- a/erts/emulator/drivers/common/zlib_drv.c
+++ /dev/null
@@ -1,792 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 2003-2017. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-
-/*
- * ZLib interface for erlang
- *
- */
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-#include <stdio.h>
-#include <zlib.h>
-#include <errno.h>
-#include <string.h>
-
-#include "erl_driver.h"
-
-
-#define DEFLATE_INIT 1
-#define DEFLATE_INIT2 2
-#define DEFLATE_SETDICT 3
-#define DEFLATE_RESET 4
-#define DEFLATE_END 5
-#define DEFLATE_PARAMS 6
-#define DEFLATE 7
-
-#define INFLATE_INIT 8
-#define INFLATE_INIT2 9
-#define INFLATE_SETDICT 10
-#define INFLATE_GETDICT 11
-#define INFLATE_SYNC 12
-#define INFLATE_RESET 13
-#define INFLATE_END 14
-#define INFLATE 15
-
-#define CRC32_0 16
-#define CRC32_1 17
-#define CRC32_2 18
-
-#define SET_BUFSZ 19
-#define GET_BUFSZ 20
-#define GET_QSIZE 21
-
-#define ADLER32_1 22
-#define ADLER32_2 23
-
-#define CRC32_COMBINE 24
-#define ADLER32_COMBINE 25
-
-#define INFLATE_CHUNK 26
-
-
-#define DEFAULT_BUFSZ 4000
-
-/* According to zlib documentation, it can never exceed this */
-#define INFL_DICT_SZ 32768
-
-/* This flag is used in the same places, where zlib return codes
- * (Z_OK, Z_STREAM_END, Z_NEED_DICT) are. So, we need to set it to
- * relatively large value to avoid possible value clashes in future.
- * */
-#define INFLATE_HAS_MORE 100
-
-static int zlib_init(void);
-static ErlDrvData zlib_start(ErlDrvPort port, char* buf);
-static void zlib_stop(ErlDrvData e);
-static void zlib_flush(ErlDrvData e);
-static ErlDrvSSizeT zlib_ctl(ErlDrvData drv_data, unsigned int command, char *buf,
- ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen);
-static void zlib_outputv(ErlDrvData drv_data, ErlIOVec *ev);
-
-ErlDrvEntry zlib_driver_entry = {
- zlib_init,
- zlib_start,
- zlib_stop,
- NULL, /* output */
- NULL, /* ready_input */
- NULL, /* ready_output */
- "zlib_drv",
- NULL, /* finish */
- NULL, /* handle */
- zlib_ctl,
- NULL, /* timeout */
- zlib_outputv,
- NULL, /* read_async */
- zlib_flush,
- NULL, /* call */
- NULL, /* event */
- ERL_DRV_EXTENDED_MARKER,
- ERL_DRV_EXTENDED_MAJOR_VERSION,
- ERL_DRV_EXTENDED_MINOR_VERSION,
- ERL_DRV_FLAG_USE_PORT_LOCKING,
- NULL, /* handle2 */
- NULL, /* process_exit */
-};
-
-typedef enum {
- ST_NONE = 0,
- ST_DEFLATE = 1,
- ST_INFLATE = 2
-} ZLibState;
-
-
-typedef struct {
- z_stream s;
- ZLibState state;
- ErlDrvBinary* bin;
- int binsz;
- int binsz_need;
- uLong crc;
- int inflate_eos_seen;
- int want_crc; /* 1 if crc is calculated on clear text */
- ErlDrvPort port; /* the associcated port */
-} ZLibData;
-
-static int zlib_inflate(ZLibData* d, int flush);
-static int zlib_deflate(ZLibData* d, int flush);
-
-#if defined(__WIN32__)
-static int i32(char* buf)
-#else
-static __inline__ int i32(char* buf)
-#endif
-{
- return (int) (
- (((int)((unsigned char*)buf)[0]) << 24) |
- (((int)((unsigned char*)buf)[1]) << 16) |
- (((int)((unsigned char*)buf)[2]) << 8) |
- (((int)((unsigned char*)buf)[3]) << 0));
-}
-
-static char* zlib_reason(int code, int* err)
-{
- switch(code) {
- case Z_OK:
- *err = 0;
- return "ok";
- case Z_STREAM_END:
- *err = 0;
- return "stream_end";
- case Z_ERRNO:
- *err = 1;
- return erl_errno_id(errno);
- case Z_STREAM_ERROR:
- *err = 1;
- return "stream_error";
- case Z_DATA_ERROR:
- *err = 1;
- return "data_error";
- case Z_MEM_ERROR:
- *err = 1;
- return "mem_error";
- case Z_BUF_ERROR:
- *err = 1;
- return "buf_error";
- case Z_VERSION_ERROR:
- *err = 1;
- return "version_error";
- default:
- *err = 1;
- return "unknown_error";
- }
-}
-
-
-static ErlDrvSSizeT zlib_return(int code, char** rbuf, ErlDrvSizeT rlen)
-{
- int msg_code = 0; /* 0=ok, 1=error */
- char* dst = *rbuf;
- char* src;
- ErlDrvSizeT len = 0;
-
- src = zlib_reason(code, &msg_code);
- *dst++ = msg_code;
- rlen--;
- len = 1;
-
- while((rlen > 0) && *src) {
- *dst++ = *src++;
- rlen--;
- len++;
- }
- return len;
-}
-
-static ErlDrvSSizeT zlib_value2(int msg_code, int value,
- char** rbuf, ErlDrvSizeT rlen)
-{
- char* dst = *rbuf;
-
- if (rlen < 5) {
- return -1;
- }
- *dst++ = msg_code;
- *dst++ = (value >> 24) & 0xff;
- *dst++ = (value >> 16) & 0xff;
- *dst++ = (value >> 8) & 0xff;
- *dst++ = value & 0xff;
- return 5;
-}
-
-static ErlDrvSSizeT zlib_value(int value, char** rbuf, ErlDrvSizeT rlen)
-{
- return zlib_value2(2, value, rbuf, rlen);
-}
-
-static int zlib_output_init(ZLibData* d)
-{
- if (d->bin != NULL)
- driver_free_binary(d->bin);
- if ((d->bin = driver_alloc_binary(d->binsz_need)) == NULL)
- return -1;
- d->binsz = d->binsz_need;
- d->s.next_out = (unsigned char*)d->bin->orig_bytes;
- d->s.avail_out = d->binsz;
- return 0;
-}
-
-/*
- * Send compressed or uncompressed data
- * and restart output procesing
- */
-static int zlib_output(ZLibData* d)
-{
- if (d->bin != NULL) {
- int len = d->binsz - d->s.avail_out;
- if (len > 0) {
- if (driver_output_binary(d->port, NULL, 0, d->bin, 0, len) < 0)
- return -1;
- }
- driver_free_binary(d->bin);
- d->bin = NULL;
- d->binsz = 0;
- }
- return zlib_output_init(d);
-}
-
-static int zlib_inflate_get_dictionary(ZLibData* d)
-{
-#ifdef HAVE_ZLIB_INFLATEGETDICTIONARY
- ErlDrvBinary* dbin = driver_alloc_binary(INFL_DICT_SZ);
- uInt dlen = 0;
- int res = inflateGetDictionary(&d->s, (unsigned char*)dbin->orig_bytes, &dlen);
- if ((res == Z_OK) && (driver_output_binary(d->port, NULL, 0, dbin, 0, dlen) < 0)) {
- res = Z_ERRNO;
- }
- driver_free_binary(dbin);
- return res;
-#else
- abort(); /* never called, just to silence 'unresolved symbol'
- for non-optimizing compiler */
-#endif
-}
-
-static int zlib_inflate(ZLibData* d, int flush)
-{
- int res = Z_OK;
-
- if ((d->bin == NULL) && (zlib_output_init(d) < 0)) {
- errno = ENOMEM;
- return Z_ERRNO;
- }
-
- while ((driver_sizeq(d->port) > 0) && (res != Z_STREAM_END)) {
- int vlen;
- SysIOVec* iov = driver_peekq(d->port, &vlen);
- int len;
- int possibly_more_output = 0;
-
- d->s.next_in = iov[0].iov_base;
- d->s.avail_in = iov[0].iov_len;
- while((possibly_more_output || (d->s.avail_in > 0)) && (res != Z_STREAM_END)) {
- res = inflate(&d->s, Z_NO_FLUSH);
- if (res == Z_NEED_DICT) {
- /* Essential to eat the header bytes that zlib has looked at */
- len = iov[0].iov_len - d->s.avail_in;
- driver_deq(d->port, len);
- return res;
- }
- if (res == Z_BUF_ERROR) {
- /* Was possible more output, but actually not */
- res = Z_OK;
- }
- else if (res < 0) {
- return res;
- }
- if (d->s.avail_out != 0) {
- possibly_more_output = 0;
- } else {
- if (d->want_crc)
- d->crc = crc32(d->crc, (unsigned char*)d->bin->orig_bytes,
- d->binsz - d->s.avail_out);
- zlib_output(d);
- possibly_more_output = 1;
- }
- }
- len = iov[0].iov_len - d->s.avail_in;
- driver_deq(d->port, len);
- }
-
- if (d->want_crc) {
- d->crc = crc32(d->crc, (unsigned char*) d->bin->orig_bytes,
- d->binsz - d->s.avail_out);
- }
- zlib_output(d);
- if (res == Z_STREAM_END) {
- d->inflate_eos_seen = 1;
- }
- return res;
-}
-
-static int zlib_inflate_chunk(ZLibData* d)
-{
- int res = Z_OK;
-
- if ((d->bin == NULL) && (zlib_output_init(d) < 0)) {
- errno = ENOMEM;
- return Z_ERRNO;
- }
-
- while ((driver_sizeq(d->port) > 0) && (d->s.avail_out > 0) &&
- (res != Z_STREAM_END)) {
- int vlen;
- SysIOVec* iov = driver_peekq(d->port, &vlen);
- int len;
-
- d->s.next_in = iov[0].iov_base;
- d->s.avail_in = iov[0].iov_len;
- while((d->s.avail_in > 0) && (d->s.avail_out > 0) && (res != Z_STREAM_END)) {
- res = inflate(&d->s, Z_NO_FLUSH);
- if (res == Z_NEED_DICT) {
- /* Essential to eat the header bytes that zlib has looked at */
- len = iov[0].iov_len - d->s.avail_in;
- driver_deq(d->port, len);
- return res;
- }
- if (res == Z_BUF_ERROR) {
- /* Was possible more output, but actually not */
- res = Z_OK;
- }
- else if (res < 0) {
- return res;
- }
- }
- len = iov[0].iov_len - d->s.avail_in;
- driver_deq(d->port, len);
- }
-
- /* We are here because all input was consumed or EOS reached or output
- * buffer is full */
- if (d->want_crc) {
- d->crc = crc32(d->crc, (unsigned char*) d->bin->orig_bytes,
- d->binsz - d->s.avail_out);
- }
- zlib_output(d);
- if ((res == Z_OK) && (d->s.avail_in > 0))
- res = INFLATE_HAS_MORE;
- else if (res == Z_STREAM_END) {
- d->inflate_eos_seen = 1;
- }
- return res;
-}
-
-static int zlib_deflate(ZLibData* d, int flush)
-{
- int res = Z_OK;
-
- if ((d->bin == NULL) && (zlib_output_init(d) < 0)) {
- errno = ENOMEM;
- return Z_ERRNO;
- }
-
- while ((driver_sizeq(d->port) > 0) && (res != Z_STREAM_END)) {
- int vlen;
- SysIOVec* iov = driver_peekq(d->port, &vlen);
- int len;
-
- d->s.next_in = iov[0].iov_base;
- d->s.avail_in = iov[0].iov_len;
-
- while((d->s.avail_in > 0) && (res != Z_STREAM_END)) {
- if ((res = deflate(&d->s, Z_NO_FLUSH)) < 0) {
- return res;
- }
- if (d->s.avail_out == 0) {
- zlib_output(d);
- }
- }
- len = iov[0].iov_len - d->s.avail_in;
- if (d->want_crc) {
- d->crc = crc32(d->crc, iov[0].iov_base, len);
- }
- driver_deq(d->port, len);
- }
-
- if (flush != Z_NO_FLUSH) {
- if ((res = deflate(&d->s, flush)) < 0) {
- return res;
- }
- if (flush == Z_FINISH) {
- while (d->s.avail_out < d->binsz) {
- zlib_output(d);
- if (res == Z_STREAM_END) {
- break;
- }
- if ((res = deflate(&d->s, flush)) < 0) {
- return res;
- }
- }
- } else {
- while (d->s.avail_out == 0) {
- zlib_output(d);
- if ((res = deflate(&d->s, flush)) < 0) {
- return res;
- }
- }
- if (d->s.avail_out < d->binsz) {
- zlib_output(d);
- }
- }
- }
- return res;
-}
-
-
-
-static void* zlib_alloc(void* data, unsigned int items, unsigned int size)
-{
- return (void*) driver_alloc(items*size);
-}
-
-static void zlib_free(void* data, void* addr)
-{
- driver_free(addr);
-}
-
-#if defined(__APPLE__) && defined(__MACH__) && defined(HAVE_ZLIB_INFLATEGETDICTIONARY)
-
-/* Work around broken build system with runtime version test */
-static int have_inflateGetDictionary;
-
-static int zlib_init()
-{
- unsigned int v[4] = {0, 0, 0, 0};
- unsigned hexver;
-
- sscanf(zlibVersion(), "%u.%u.%u.%u", &v[0], &v[1], &v[2], &v[3]);
-
- hexver = (v[0] << (8*3)) | (v[1] << (8*2)) | (v[2] << (8)) | v[3];
-
- have_inflateGetDictionary = (hexver >= 0x1020701); /* 1.2.7.1 */
-
- return 0;
-}
-#else /* trust configure got it right */
-# ifdef HAVE_ZLIB_INFLATEGETDICTIONARY
-# define have_inflateGetDictionary 1
-# else
-# define have_inflateGetDictionary 0
-# endif
-static int zlib_init()
-{
- return 0;
-}
-#endif
-
-static ErlDrvData zlib_start(ErlDrvPort port, char* buf)
-{
- ZLibData* d;
-
- if ((d = (ZLibData*) driver_alloc(sizeof(ZLibData))) == NULL)
- return ERL_DRV_ERROR_GENERAL;
-
- memset(&d->s, 0, sizeof(z_stream));
-
- d->s.zalloc = zlib_alloc;
- d->s.zfree = zlib_free;
- d->s.opaque = d;
- d->s.data_type = Z_BINARY;
-
- d->port = port;
- d->state = ST_NONE;
- d->bin = NULL;
- d->binsz = 0;
- d->binsz_need = DEFAULT_BUFSZ;
- d->crc = crc32(0L, Z_NULL, 0);
- d->inflate_eos_seen = 0;
- d->want_crc = 0;
- return (ErlDrvData)d;
-}
-
-
-static void zlib_stop(ErlDrvData e)
-{
- ZLibData* d = (ZLibData*)e;
-
- if (d->state == ST_DEFLATE)
- deflateEnd(&d->s);
- else if (d->state == ST_INFLATE)
- inflateEnd(&d->s);
-
- if (d->bin != NULL)
- driver_free_binary(d->bin);
-
- driver_free(d);
-}
-
-static void zlib_flush(ErlDrvData drv_data)
-{
- ZLibData* d = (ZLibData*) drv_data;
-
- driver_deq(d->port, driver_sizeq(d->port));
-}
-
-static ErlDrvSSizeT zlib_ctl(ErlDrvData drv_data, unsigned int command, char *buf,
- ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen)
-{
- ZLibData* d = (ZLibData*)drv_data;
- int res;
-
- switch(command) {
- case DEFLATE_INIT:
- if (len != 4) goto badarg;
- if (d->state != ST_NONE) goto badarg;
- res = deflateInit(&d->s, i32(buf));
- if (res == Z_OK) {
- d->state = ST_DEFLATE;
- d->want_crc = 0;
- d->crc = crc32(0L, Z_NULL, 0);
- }
- return zlib_return(res, rbuf, rlen);
-
- case DEFLATE_INIT2: {
- int wbits;
-
- if (len != 20) goto badarg;
- if (d->state != ST_NONE) goto badarg;
- wbits = i32(buf+8);
- res = deflateInit2(&d->s, i32(buf), i32(buf+4), wbits,
- i32(buf+12), i32(buf+16));
- if (res == Z_OK) {
- d->state = ST_DEFLATE;
- d->want_crc = (wbits < 0);
- d->crc = crc32(0L, Z_NULL, 0);
- }
- return zlib_return(res, rbuf, rlen);
- }
-
- case DEFLATE_SETDICT:
- if (d->state != ST_DEFLATE) goto badarg;
- res = deflateSetDictionary(&d->s, (unsigned char*)buf, len);
- if (res == Z_OK) {
- return zlib_value(d->s.adler, rbuf, rlen);
- } else {
- return zlib_return(res, rbuf, rlen);
- }
-
- case DEFLATE_RESET:
- if (len != 0) goto badarg;
- if (d->state != ST_DEFLATE) goto badarg;
- driver_deq(d->port, driver_sizeq(d->port));
- res = deflateReset(&d->s);
- return zlib_return(res, rbuf, rlen);
-
- case DEFLATE_END:
- if (len != 0) goto badarg;
- if (d->state != ST_DEFLATE) goto badarg;
- driver_deq(d->port, driver_sizeq(d->port));
- res = deflateEnd(&d->s);
- d->state = ST_NONE;
- return zlib_return(res, rbuf, rlen);
-
- case DEFLATE_PARAMS:
- if (len != 8) goto badarg;
- if (d->state != ST_DEFLATE) goto badarg;
- res = deflateParams(&d->s, i32(buf), i32(buf+4));
- return zlib_return(res, rbuf, rlen);
-
- case DEFLATE:
- if (d->state != ST_DEFLATE) goto badarg;
- if (len != 4) goto badarg;
- res = zlib_deflate(d, i32(buf));
- return zlib_return(res, rbuf, rlen);
-
- case INFLATE_INIT:
- if (len != 0) goto badarg;
- if (d->state != ST_NONE) goto badarg;
- res = inflateInit(&d->s);
- if (res == Z_OK) {
- d->state = ST_INFLATE;
- d->inflate_eos_seen = 0;
- d->want_crc = 0;
- d->crc = crc32(0L, Z_NULL, 0);
- }
- return zlib_return(res, rbuf, rlen);
-
- case INFLATE_INIT2: {
- int wbits;
-
- if (len != 4) goto badarg;
- if (d->state != ST_NONE) goto badarg;
- wbits = i32(buf);
- res = inflateInit2(&d->s, wbits);
- if (res == Z_OK) {
- d->state = ST_INFLATE;
- d->inflate_eos_seen = 0;
- d->want_crc = (wbits < 0);
- d->crc = crc32(0L, Z_NULL, 0);
- }
- return zlib_return(res, rbuf, rlen);
- }
-
- case INFLATE_SETDICT:
- if (d->state != ST_INFLATE) goto badarg;
- res = inflateSetDictionary(&d->s, (unsigned char*)buf, len);
- return zlib_return(res, rbuf, rlen);
-
- case INFLATE_GETDICT:
- if (have_inflateGetDictionary) {
- if (d->state != ST_INFLATE) goto badarg;
- res = zlib_inflate_get_dictionary(d);
- } else {
- errno = ENOTSUP;
- res = Z_ERRNO;
- }
- return zlib_return(res, rbuf, rlen);
-
- case INFLATE_SYNC:
- if (d->state != ST_INFLATE) goto badarg;
- if (len != 0) goto badarg;
- if (driver_sizeq(d->port) == 0) {
- res = Z_BUF_ERROR;
- } else {
- int vlen;
- SysIOVec* iov = driver_peekq(d->port, &vlen);
-
- d->s.next_in = iov[0].iov_base;
- d->s.avail_in = iov[0].iov_len;
- res = inflateSync(&d->s);
- }
- return zlib_return(res, rbuf, rlen);
-
- case INFLATE_RESET:
- if (d->state != ST_INFLATE) goto badarg;
- if (len != 0) goto badarg;
- driver_deq(d->port, driver_sizeq(d->port));
- res = inflateReset(&d->s);
- d->inflate_eos_seen = 0;
- return zlib_return(res, rbuf, rlen);
-
- case INFLATE_END:
- if (d->state != ST_INFLATE) goto badarg;
- if (len != 0) goto badarg;
- driver_deq(d->port, driver_sizeq(d->port));
- res = inflateEnd(&d->s);
- if (res == Z_OK && d->inflate_eos_seen == 0) {
- res = Z_DATA_ERROR;
- }
- d->state = ST_NONE;
- return zlib_return(res, rbuf, rlen);
-
- case INFLATE:
- if (d->state != ST_INFLATE) goto badarg;
- if (len != 4) goto badarg;
- res = zlib_inflate(d, i32(buf));
- if (res == Z_NEED_DICT) {
- return zlib_value2(3, d->s.adler, rbuf, rlen);
- } else {
- return zlib_return(res, rbuf, rlen);
- }
-
- case INFLATE_CHUNK:
- if (d->state != ST_INFLATE) goto badarg;
- if (len != 0) goto badarg;
- res = zlib_inflate_chunk(d);
- if (res == INFLATE_HAS_MORE) {
- return zlib_value2(4, 0, rbuf, rlen);
- } else if (res == Z_NEED_DICT) {
- return zlib_value2(3, d->s.adler, rbuf, rlen);
- } else {
- return zlib_return(res, rbuf, rlen);
- }
-
- case GET_QSIZE:
- return zlib_value(driver_sizeq(d->port), rbuf, rlen);
-
- case GET_BUFSZ:
- return zlib_value(d->binsz_need, rbuf, rlen);
-
- case SET_BUFSZ: {
- int need;
- if (len != 4) goto badarg;
- need = i32(buf);
- if ((need < 16) || (need > 0x00ffffff))
- goto badarg;
- if (d->binsz_need != need) {
- d->binsz_need = need;
- if (d->bin != NULL) {
- if (d->s.avail_out == d->binsz) {
- driver_free_binary(d->bin);
- d->bin = NULL;
- d->binsz = 0;
- }
- else
- zlib_output(d);
- }
- }
- return zlib_return(Z_OK, rbuf, rlen);
- }
-
- case CRC32_0:
- return zlib_value(d->crc, rbuf, rlen);
-
- case CRC32_1: {
- uLong crc = crc32(0L, Z_NULL, 0);
- crc = crc32(crc, (unsigned char*) buf, len);
- return zlib_value(crc, rbuf, rlen);
- }
-
- case CRC32_2: {
- uLong crc;
- if (len < 4) goto badarg;
- crc = (unsigned int) i32(buf);
- crc = crc32(crc, (unsigned char*) buf+4, len-4);
- return zlib_value(crc, rbuf, rlen);
- }
-
- case ADLER32_1: {
- uLong adler = adler32(0L, Z_NULL, 0);
- adler = adler32(adler, (unsigned char*) buf, len);
- return zlib_value(adler, rbuf, rlen);
- }
-
- case ADLER32_2: {
- uLong adler;
- if (len < 4) goto badarg;
- adler = (unsigned int) i32(buf);
- adler = adler32(adler, (unsigned char*) buf+4, len-4);
- return zlib_value(adler, rbuf, rlen);
- }
-
- case CRC32_COMBINE: {
- uLong crc, crc1, crc2, len2;
- if (len != 12) goto badarg;
- crc1 = (unsigned int) i32(buf);
- crc2 = (unsigned int) i32(buf+4);
- len2 = (unsigned int) i32(buf+8);
- crc = crc32_combine(crc1, crc2, len2);
- return zlib_value(crc, rbuf, rlen);
- }
-
- case ADLER32_COMBINE: {
- uLong adler, adler1, adler2, len2;
- if (len != 12) goto badarg;
- adler1 = (unsigned int) i32(buf);
- adler2 = (unsigned int) i32(buf+4);
- len2 = (unsigned int) i32(buf+8);
- adler = adler32_combine(adler1, adler2, len2);
- return zlib_value(adler, rbuf, rlen);
- }
- }
-
- badarg:
- errno = EINVAL;
- return zlib_return(Z_ERRNO, rbuf, rlen);
-}
-
-
-
-static void zlib_outputv(ErlDrvData drv_data, ErlIOVec *ev)
-{
- ZLibData* d = (ZLibData*) drv_data;
-
- driver_enqv(d->port, ev, 0);
-}
diff --git a/erts/emulator/nifs/common/zlib_nif.c b/erts/emulator/nifs/common/zlib_nif.c
new file mode 100644
index 0000000000..cffb3f3f63
--- /dev/null
+++ b/erts/emulator/nifs/common/zlib_nif.c
@@ -0,0 +1,998 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson 2017. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#define STATIC_ERLANG_NIF 1
+
+#include <stdio.h>
+#include <zlib.h>
+
+#include "erl_nif.h"
+#include "config.h"
+#include "sys.h"
+
+#ifdef VALGRIND
+# include <valgrind/memcheck.h>
+#endif
+
+#define INFL_DICT_SZ (32768)
+
+#ifndef MAX
+#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
+#endif
+
+#ifndef MIN
+#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
+#endif
+
+/* NIF interface declarations */
+static int load(ErlNifEnv *env, void** priv_data, ERL_NIF_TERM load_info);
+static int upgrade(ErlNifEnv *env, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info);
+static void unload(ErlNifEnv *env, void* priv_data);
+
+static ErlNifResourceType *rtype_zlib;
+
+static ERL_NIF_TERM am_ok;
+static ERL_NIF_TERM am_error;
+static ERL_NIF_TERM am_continue;
+static ERL_NIF_TERM am_finished;
+static ERL_NIF_TERM am_empty;
+static ERL_NIF_TERM am_not_supported;
+static ERL_NIF_TERM am_need_dictionary;
+static ERL_NIF_TERM am_stream_end;
+static ERL_NIF_TERM am_stream_error;
+static ERL_NIF_TERM am_data_error;
+static ERL_NIF_TERM am_mem_error;
+static ERL_NIF_TERM am_buf_error;
+static ERL_NIF_TERM am_version_error;
+static ERL_NIF_TERM am_unknown_error;
+
+typedef enum {
+ ST_NONE = 0,
+ ST_DEFLATE = 1,
+ ST_INFLATE = 2,
+ ST_CLOSED = 3
+} zlib_state;
+
+typedef struct {
+ z_stream s;
+ zlib_state state;
+
+ /* These refer to the plaintext CRC, and are only needed for zlib:crc32/1
+ * which is deprecated. */
+ uLong input_crc;
+ uLong output_crc;
+ int want_input_crc;
+ int want_output_crc;
+
+ int is_raw_stream;
+
+ int eos_seen;
+
+ /* DEPRECATED */
+ int inflateChunk_buffer_size;
+
+ ErlNifPid controlling_process;
+
+ ErlNifIOQueue *input_queue;
+
+ ErlNifEnv *stash_env;
+ ERL_NIF_TERM stash_term;
+} zlib_data_t;
+
+/* The NIFs: */
+
+static ERL_NIF_TERM zlib_open(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_close(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_deflateInit(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_deflateInit2(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_deflateSetDictionary(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_deflateReset(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_deflateEnd(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_deflateParams(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_deflate(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM zlib_inflateInit(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_inflateInit2(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_inflateSetDictionary(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_inflateGetDictionary(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_inflateReset(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_inflateEnd(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_inflate(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM zlib_crc32(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM zlib_clearStash(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_setStash(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_getStash(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM zlib_getBufSize(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM zlib_setBufSize(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ERL_NIF_TERM zlib_enqueue_input(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+static ErlNifFunc nif_funcs[] = {
+ /* deflate */
+ {"deflateInit_nif", 2, zlib_deflateInit},
+ {"deflateInit_nif", 6, zlib_deflateInit2},
+ {"deflateSetDictionary_nif", 2, zlib_deflateSetDictionary},
+ {"deflateReset_nif", 1, zlib_deflateReset},
+ {"deflateEnd_nif", 1, zlib_deflateEnd},
+ {"deflateParams_nif", 3, zlib_deflateParams},
+ {"deflate_nif", 4, zlib_deflate},
+
+ /* inflate */
+ {"inflateInit_nif", 1, zlib_inflateInit},
+ {"inflateInit_nif", 2, zlib_inflateInit2},
+ {"inflateSetDictionary_nif", 2, zlib_inflateSetDictionary},
+ {"inflateGetDictionary_nif", 1, zlib_inflateGetDictionary},
+ {"inflateReset_nif", 1, zlib_inflateReset},
+ {"inflateEnd_nif", 1, zlib_inflateEnd},
+ {"inflate_nif", 4, zlib_inflate},
+
+ /* running checksum */
+ {"crc32_nif", 1, zlib_crc32},
+
+ /* open & close */
+ {"close_nif", 1, zlib_close},
+ {"open_nif", 0, zlib_open},
+
+ /* The stash keeps a single term alive across calls, and is used in
+ * exception_on_need_dict/1 to retain the old error behavior, and for
+ * saving data flushed through deflateParams/3. */
+ {"getStash_nif", 1, zlib_getStash},
+ {"clearStash_nif", 1, zlib_clearStash},
+ {"setStash_nif", 2, zlib_setStash},
+
+ /* DEPRECATED: buffer size for inflateChunk */
+ {"getBufSize_nif", 1, zlib_getBufSize},
+ {"setBufSize_nif", 2, zlib_setBufSize},
+
+ {"enqueue_nif", 2, zlib_enqueue_input},
+};
+
+ERL_NIF_INIT(zlib, nif_funcs, load, NULL, upgrade, unload)
+
+static void gc_zlib(ErlNifEnv *env, void* data);
+
+static int load(ErlNifEnv *env, void** priv_data, ERL_NIF_TERM load_info)
+{
+ am_ok = enif_make_atom(env, "ok");
+ am_error = enif_make_atom(env, "error");
+ am_empty = enif_make_atom(env, "empty");
+ am_continue = enif_make_atom(env, "continue");
+ am_finished = enif_make_atom(env, "finished");
+ am_need_dictionary = enif_make_atom(env, "need_dictionary");
+ am_not_supported = enif_make_atom(env, "not_supported");
+ am_stream_end = enif_make_atom(env, "stream_end");
+ am_stream_error = enif_make_atom(env, "stream_error");
+ am_data_error = enif_make_atom(env, "data_error");
+ am_mem_error = enif_make_atom(env, "mem_error");
+ am_buf_error = enif_make_atom(env, "buf_error");
+ am_version_error = enif_make_atom(env, "version_error");
+ am_unknown_error = enif_make_atom(env, "unknown_error");
+
+ rtype_zlib = enif_open_resource_type(env, NULL,
+ "gc_zlib", gc_zlib, ERL_NIF_RT_CREATE, NULL);
+ *priv_data = NULL;
+
+ return 0;
+}
+
+static void unload(ErlNifEnv *env, void* priv_data)
+{
+
+}
+
+static int upgrade(ErlNifEnv *env, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info)
+{
+ if(*old_priv_data != NULL) {
+ return -1; /* Don't know how to do that */
+ }
+ if(*priv_data != NULL) {
+ return -1; /* Don't know how to do that */
+ }
+ if(load(env, priv_data, load_info)) {
+ return -1;
+ }
+ return 0;
+}
+
+static void* zlib_alloc(void* data, unsigned int items, unsigned int size)
+{
+ return (void*) enif_alloc(items * size);
+}
+
+static void zlib_free(void* data, void* addr)
+{
+ enif_free(addr);
+}
+
+static ERL_NIF_TERM zlib_return(ErlNifEnv *env, int code) {
+ ERL_NIF_TERM reason;
+ switch(code) {
+ case Z_OK:
+ reason = am_ok;
+ break;
+ case Z_STREAM_END:
+ reason = am_stream_end;
+ break;
+ case Z_ERRNO:
+ reason = enif_make_int(env, errno);
+ //enif_make_tuple2(env, enif_make_int(env, err), reason);
+ break;
+ case Z_STREAM_ERROR:
+ //reason = am_stream_error;
+ reason = enif_raise_exception(env, am_stream_error);
+ break;
+ case Z_DATA_ERROR:
+ //reason = am_data_error;
+ reason = enif_raise_exception(env, am_data_error);
+ break;
+ case Z_MEM_ERROR:
+ reason = am_mem_error;
+ break;
+ case Z_BUF_ERROR:
+ reason = am_buf_error;
+ break;
+ case Z_VERSION_ERROR:
+ reason = am_version_error;
+ break;
+ default:
+ reason = am_unknown_error;
+ break;
+ }
+ return reason;
+}
+
+static void gc_zlib(ErlNifEnv *env, void* data) {
+ zlib_data_t *d = (zlib_data_t*)data;
+
+ if(d->state == ST_DEFLATE) {
+ deflateEnd(&d->s);
+ } else if(d->state == ST_INFLATE) {
+ inflateEnd(&d->s);
+ }
+
+ if(d->state != ST_CLOSED) {
+ enif_ioq_destroy(d->input_queue);
+
+ if(d->stash_env != NULL) {
+ enif_free_env(d->stash_env);
+ }
+
+ d->state = ST_CLOSED;
+ }
+}
+
+static void zlib_reset_input(zlib_data_t *d) {
+ enif_ioq_destroy(d->input_queue);
+ d->input_queue = enif_ioq_create(ERL_NIF_IOQ_NORMAL);
+
+ if(d->stash_env != NULL) {
+ enif_free_env(d->stash_env);
+ d->stash_env = NULL;
+ d->stash_term = NIL;
+ }
+}
+
+static int get_zlib_data(ErlNifEnv* env, ERL_NIF_TERM opaque, zlib_data_t **d) {
+ ErlNifPid current_process;
+
+ if(!enif_get_resource(env, opaque, rtype_zlib, (void **)d)) {
+ return 0;
+ }
+
+ enif_self(env, &current_process);
+
+ return enif_is_identical(enif_make_pid(env, &current_process),
+ enif_make_pid(env, &(*d)->controlling_process));
+}
+
+static int zlib_flush_queue(int (*codec)(z_stream*, int), ErlNifEnv *env,
+ zlib_data_t *d, size_t input_limit, ErlNifBinary *output_buffer, int flush,
+ size_t *bytes_produced, size_t *bytes_consumed, size_t *bytes_remaining) {
+
+ int vec_len, vec_idx;
+ SysIOVec *input_vec;
+ int res;
+
+ input_vec = enif_ioq_peek(d->input_queue, &vec_len);
+ vec_idx = 0;
+ res = Z_OK;
+
+ *bytes_produced = 0;
+ *bytes_consumed = 0;
+
+ d->s.avail_out = output_buffer->size;
+ d->s.next_out = output_buffer->data;
+
+ while(res == Z_OK && vec_idx < vec_len && *bytes_consumed < input_limit) {
+ size_t timeslice_percent, block_consumed, block_size;
+
+ block_size = MIN(input_vec[vec_idx].iov_len, input_limit);
+
+ d->s.next_in = input_vec[vec_idx].iov_base;
+ d->s.avail_in = block_size;
+
+ res = codec(&d->s, Z_NO_FLUSH);
+
+ ASSERT(d->s.avail_in == 0 || d->s.avail_out == 0 || res != Z_OK);
+
+ block_consumed = block_size - d->s.avail_in;
+ *bytes_consumed += block_consumed;
+
+ if(d->want_input_crc) {
+ d->input_crc =
+ crc32(d->input_crc, input_vec[vec_idx].iov_base, block_consumed);
+ }
+
+ timeslice_percent = (100 * block_consumed) / input_limit;
+ if(enif_consume_timeslice(env, MAX(1, timeslice_percent))) {
+ break;
+ }
+
+ vec_idx++;
+ }
+
+ if(!enif_ioq_deq(d->input_queue, *bytes_consumed, bytes_remaining)) {
+ *bytes_remaining = 0;
+ res = Z_BUF_ERROR;
+ }
+
+ if(res == Z_OK && flush != Z_NO_FLUSH && (*bytes_remaining == 0)) {
+ d->s.next_in = NULL;
+ d->s.avail_in = 0;
+
+ res = codec(&d->s, flush);
+ }
+
+ *bytes_produced = output_buffer->size - d->s.avail_out;
+
+ return res;
+}
+
+static ERL_NIF_TERM zlib_codec(int (*codec)(z_stream*, int),
+ ErlNifEnv *env, zlib_data_t *d,
+ int input_chunk_size,
+ int output_chunk_size,
+ int flush) {
+
+ size_t bytes_produced, bytes_consumed, bytes_remaining;
+ ErlNifBinary output_buffer;
+ int res;
+
+ if(!enif_alloc_binary(output_chunk_size, &output_buffer)) {
+ return zlib_return(env, Z_MEM_ERROR);
+ }
+
+ res = zlib_flush_queue(codec, env, d, input_chunk_size, &output_buffer,
+ flush, &bytes_produced, &bytes_consumed, &bytes_remaining);
+
+ if(res < 0 && res != Z_BUF_ERROR) {
+ enif_release_binary(&output_buffer);
+ return zlib_return(env, res);
+ }
+
+ if(res == Z_STREAM_END) {
+ d->eos_seen = 1;
+ }
+
+ if(d->want_output_crc) {
+ d->output_crc =
+ crc32(d->output_crc, output_buffer.data, bytes_produced);
+ }
+
+ if(bytes_consumed == 0 && bytes_produced == 0 && bytes_remaining != 0) {
+ /* Die if we've made zero progress; this should not happen on
+ * well-formed input. */
+
+ enif_release_binary(&output_buffer);
+ return zlib_return(env, Z_DATA_ERROR);
+ } else {
+ ERL_NIF_TERM flushed_output;
+
+ if(bytes_produced > 0) {
+ if(bytes_produced < output_buffer.size) {
+ enif_realloc_binary(&output_buffer, bytes_produced);
+ }
+
+ flushed_output =
+ enif_make_list1(env, enif_make_binary(env, &output_buffer));
+ } else {
+ enif_release_binary(&output_buffer);
+ flushed_output = enif_make_list(env, 0);
+ }
+
+ if(bytes_remaining == 0 && bytes_produced < output_chunk_size) {
+ return enif_make_tuple2(env, am_finished, flushed_output);
+ } else if(res != Z_NEED_DICT) {
+ return enif_make_tuple2(env, am_continue, flushed_output);
+ }
+
+ return enif_make_tuple3(env, am_need_dictionary,
+ enif_make_int(env, d->s.adler), flushed_output);
+ }
+}
+
+/* zlib nifs */
+
+static ERL_NIF_TERM zlib_getStash(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->stash_env == NULL) {
+ return am_empty;
+ }
+
+ return enif_make_tuple2(env, am_ok, enif_make_copy(env, d->stash_term));
+}
+
+static ERL_NIF_TERM zlib_clearStash(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->stash_env == NULL) {
+ return enif_make_badarg(env);
+ }
+
+ enif_free_env(d->stash_env);
+ d->stash_env = NULL;
+ d->stash_term = NIL;
+
+ return am_ok;
+}
+
+static ERL_NIF_TERM zlib_setStash(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+
+ if(argc != 2 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->stash_env != NULL) {
+ return enif_make_badarg(env);
+ }
+
+ d->stash_env = enif_alloc_env();
+ d->stash_term = enif_make_copy(d->stash_env, argv[1]);
+
+ return am_ok;
+}
+
+static ERL_NIF_TERM zlib_open(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ ERL_NIF_TERM result;
+
+ d = (zlib_data_t *) enif_alloc_resource(rtype_zlib, sizeof(zlib_data_t));
+
+ memset(&d->s, 0, sizeof(z_stream));
+
+ enif_self(env, &d->controlling_process);
+
+ d->input_queue = enif_ioq_create(ERL_NIF_IOQ_NORMAL);
+
+ d->s.zalloc = zlib_alloc;
+ d->s.zfree = zlib_free;
+ d->s.opaque = d;
+ d->s.data_type = Z_BINARY;
+
+ d->state = ST_NONE;
+ d->eos_seen = 0;
+
+ d->want_output_crc = 0;
+ d->want_input_crc = 0;
+ d->is_raw_stream = 0;
+
+ d->output_crc = crc32(0L, Z_NULL, 0);
+ d->input_crc = crc32(0L, Z_NULL, 0);
+
+ d->stash_env = NULL;
+ d->stash_term = NIL;
+
+ d->inflateChunk_buffer_size = 4000;
+
+ result = enif_make_resource(env, d);
+ enif_release_resource(d);
+
+ return result;
+}
+
+static ERL_NIF_TERM zlib_close(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+
+ /* strictly speaking not needed since the gc will handle this */
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state == ST_CLOSED) {
+ return enif_make_badarg(env);
+ }
+
+ gc_zlib(env, d);
+
+ return am_ok;
+}
+
+/* deflate */
+
+static ERL_NIF_TERM zlib_deflateInit(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ int level, res;
+
+ if(argc != 2 || !get_zlib_data(env, argv[0], &d) ||
+ !enif_get_int(env, argv[1], &level)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_NONE) {
+ return enif_make_badarg(env);
+ }
+
+ res = deflateInit(&d->s, level);
+
+ if(res == Z_OK) {
+ d->state = ST_DEFLATE;
+ d->eos_seen = 0;
+
+ /* FIXME: crc32/1 is documented as returning "the current calculated
+ * checksum," but failed to mention that the old implementation only
+ * calculated it when WindowBits < 0 (See zlib_deflateInit2).
+ *
+ * We could fix this behavior by setting d->want_input_crc to 1 here,
+ * but we've decided to retain this quirk since the performance hit is
+ * quite significant. */
+ d->want_output_crc = 0;
+ d->want_input_crc = 0;
+
+ d->output_crc = crc32(0L, Z_NULL, 0);
+ d->input_crc = crc32(0L, Z_NULL, 0);
+ }
+
+ return zlib_return(env, res);
+}
+
+static ERL_NIF_TERM zlib_deflateInit2(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ int level, method, windowBits, memLevel, strategy, res;
+
+ if(argc != 6 || !get_zlib_data(env, argv[0], &d)
+ || !enif_get_int(env, argv[1], &level)
+ || !enif_get_int(env, argv[2], &method)
+ || !enif_get_int(env, argv[3], &windowBits)
+ || !enif_get_int(env, argv[4], &memLevel)
+ || !enif_get_int(env, argv[5], &strategy)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_NONE) {
+ return enif_make_badarg(env);
+ }
+
+ res = deflateInit2(&d->s, level, method, windowBits, memLevel, strategy);
+
+ if(res == Z_OK) {
+ d->state = ST_DEFLATE;
+ d->eos_seen = 0;
+
+ d->is_raw_stream = (windowBits < 0);
+
+ d->want_output_crc = 0;
+ d->want_input_crc = d->is_raw_stream;
+
+ d->output_crc = crc32(0L, Z_NULL, 0);
+ d->input_crc = crc32(0L, Z_NULL, 0);
+ }
+
+ return zlib_return(env, res);
+}
+
+static ERL_NIF_TERM zlib_deflateSetDictionary(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ ErlNifBinary bin;
+ int res;
+
+ if(argc != 2 || !get_zlib_data(env, argv[0], &d)
+ || !enif_inspect_iolist_as_binary(env, argv[1], &bin)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_DEFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ if((res = deflateSetDictionary(&d->s, bin.data, bin.size)) == Z_OK) {
+ uLong checksum = d->s.adler;
+
+ /* d->s.adler is not updated in raw deflate mode, so we'll calculate it
+ * ourselves in case the user wants to rely on that behavior. */
+ if(d->is_raw_stream) {
+ checksum = adler32(0, bin.data, bin.size);
+ }
+
+ return enif_make_int(env, checksum);
+ }
+
+ return zlib_return(env, res);
+}
+
+static ERL_NIF_TERM zlib_deflateReset(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ int res;
+
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_DEFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ res = deflateReset(&d->s);
+
+ d->input_crc = crc32(0L, Z_NULL, 0);
+ d->eos_seen = 0;
+
+ zlib_reset_input(d);
+
+ return zlib_return(env, res);
+}
+
+static ERL_NIF_TERM zlib_deflateEnd(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ int res;
+
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_DEFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ res = deflateEnd(&d->s);
+
+ if(res == Z_OK && enif_ioq_size(d->input_queue) > 0) {
+ res = Z_DATA_ERROR;
+ }
+
+ zlib_reset_input(d);
+ d->state = ST_NONE;
+
+ return zlib_return(env, res);
+}
+
+static ERL_NIF_TERM zlib_deflateParams(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ int res, level, strategy;
+
+ if(argc != 3 || !get_zlib_data(env, argv[0], &d)
+ || !enif_get_int(env, argv[1], &level)
+ || !enif_get_int(env, argv[2], &strategy)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_DEFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ /* deflateParams will flush everything currently in the stream, corrupting
+ * the heap unless it's empty. We therefore pretend to have a full output
+ * buffer, forcing a Z_BUF_ERROR if there's anything left to be flushed. */
+ d->s.avail_out = 0;
+ res = deflateParams(&d->s, level, strategy);
+
+ return zlib_return(env, res);
+}
+
+static ERL_NIF_TERM zlib_deflate(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+
+ int input_chunk_size, output_chunk_size, flush;
+
+ if(argc != 4 || !get_zlib_data(env, argv[0], &d)
+ || !enif_get_int(env, argv[1], &input_chunk_size)
+ || !enif_get_int(env, argv[2], &output_chunk_size)
+ || !enif_get_int(env, argv[3], &flush)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_DEFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ return zlib_codec(&deflate, env, d, input_chunk_size, output_chunk_size, flush);
+}
+
+/* inflate */
+
+static ERL_NIF_TERM zlib_inflateInit(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ int res;
+
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_NONE) {
+ return enif_make_badarg(env);
+ }
+
+ res = inflateInit(&d->s);
+
+ if(res == Z_OK) {
+ d->state = ST_INFLATE;
+ d->eos_seen = 0;
+
+ d->want_output_crc = 0;
+ d->want_input_crc = 0;
+ d->is_raw_stream = 0;
+
+ d->output_crc = crc32(0L, Z_NULL, 0);
+ d->input_crc = crc32(0L, Z_NULL, 0);
+ }
+
+ return zlib_return(env, res);
+}
+
+static ERL_NIF_TERM zlib_inflateInit2(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ int windowBits, res;
+
+ if(argc != 2 || !get_zlib_data(env, argv[0], &d)
+ || !enif_get_int(env, argv[1], &windowBits)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_NONE) {
+ return enif_make_badarg(env);
+ }
+
+ res = inflateInit2(&d->s, windowBits);
+
+ if(res == Z_OK) {
+ d->state = ST_INFLATE;
+ d->eos_seen = 0;
+
+ d->is_raw_stream = (windowBits < 0);
+
+ d->want_output_crc = d->is_raw_stream;
+ d->want_input_crc = 0;
+
+ d->output_crc = crc32(0L, Z_NULL, 0);
+ d->input_crc = crc32(0L, Z_NULL, 0);
+ }
+
+ return zlib_return(env, res);
+}
+
+static ERL_NIF_TERM zlib_inflateSetDictionary(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ ErlNifBinary bin;
+ int res;
+
+ if(argc != 2 || !get_zlib_data(env, argv[0], &d)
+ || !enif_inspect_iolist_as_binary(env, argv[1], &bin)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_INFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ res = inflateSetDictionary(&d->s, bin.data, bin.size);
+
+ return zlib_return(env, res);
+}
+
+#ifdef HAVE_ZLIB_INFLATEGETDICTIONARY
+/* Work around broken build system with runtime version test */
+static int zlib_supports_inflateGetDictionary(void) {
+ static int supportsGetDictionary = -1;
+
+#if defined(__APPLE__) && defined(__MACH__)
+ if(supportsGetDictionary < 0) {
+ unsigned int v[4] = {0, 0, 0, 0};
+ unsigned hexver;
+
+ sscanf(zlibVersion(), "%u.%u.%u.%u", &v[0], &v[1], &v[2], &v[3]);
+
+ hexver = (v[0] << (8*3)) | (v[1] << (8*2)) | (v[2] << (8)) | v[3];
+ supportsGetDictionary = (hexver >= 0x1020701); /* 1.2.7.1 */
+ }
+#endif
+
+ return supportsGetDictionary;
+}
+
+static ERL_NIF_TERM zlib_inflateGetDictionary(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ ErlNifBinary obin;
+ uInt len;
+ int res;
+
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_INFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ if(!zlib_supports_inflateGetDictionary()) {
+ return enif_make_badarg(env);
+ }
+
+ enif_alloc_binary(INFL_DICT_SZ, &obin);
+
+ len = 0;
+ if((res = inflateGetDictionary(&d->s, obin.data, &len)) < 0) {
+ enif_release_binary(&obin);
+ return zlib_return(env, res);
+ }
+
+ enif_realloc_binary(&obin, (size_t)len);
+ return enif_make_binary(env, &obin);
+}
+
+#else /* !HAVE_ZLIB_INFLATEGETDICTIONARY */
+
+static ERL_NIF_TERM zlib_inflateGetDictionary(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ return enif_make_badarg(env);
+}
+
+#endif
+
+static ERL_NIF_TERM zlib_inflateReset(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ int res;
+
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_INFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ res = inflateReset(&d->s);
+
+ d->output_crc = crc32(0L, Z_NULL, 0);
+ d->eos_seen = 0;
+
+ zlib_reset_input(d);
+
+ return zlib_return(env, res);
+}
+
+static ERL_NIF_TERM zlib_inflateEnd(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+ int res;
+
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_INFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ res = inflateEnd(&d->s);
+
+ if(res == Z_OK && (!d->eos_seen || enif_ioq_size(d->input_queue) > 0)) {
+ res = Z_DATA_ERROR;
+ }
+
+ zlib_reset_input(d);
+ d->state = ST_NONE;
+
+ return zlib_return(env, res);
+}
+
+static ERL_NIF_TERM zlib_inflate(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+
+ int input_chunk_size, output_chunk_size, flush;
+
+ if(argc != 4 || !get_zlib_data(env, argv[0], &d)
+ || !enif_get_int(env, argv[1], &input_chunk_size)
+ || !enif_get_int(env, argv[2], &output_chunk_size)
+ || !enif_get_int(env, argv[3], &flush)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_INFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ return zlib_codec(&inflate, env, d, input_chunk_size, output_chunk_size, flush);
+}
+
+static ERL_NIF_TERM zlib_crc32(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state == ST_DEFLATE) {
+ return enif_make_ulong(env, d->input_crc);
+ } else if(d->state == ST_INFLATE) {
+ return enif_make_ulong(env, d->output_crc);
+ }
+
+ return enif_make_badarg(env);
+}
+
+static ERL_NIF_TERM zlib_getBufSize(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+
+ if(argc != 1 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ return enif_make_int(env, d->inflateChunk_buffer_size);
+}
+
+static ERL_NIF_TERM zlib_setBufSize(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+
+ if(argc != 2 || !get_zlib_data(env, argv[0], &d)
+ || !enif_get_int(env, argv[1], &d->inflateChunk_buffer_size)) {
+ return enif_make_badarg(env);
+ }
+
+ return am_ok;
+}
+
+static ERL_NIF_TERM zlib_enqueue_input(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
+ zlib_data_t *d;
+
+ ErlNifIOVec prealloc, *iovec = &prealloc;
+ ERL_NIF_TERM tail;
+
+ if(argc != 2 || !get_zlib_data(env, argv[0], &d)) {
+ return enif_make_badarg(env);
+ }
+
+ if(d->state != ST_DEFLATE && d->state != ST_INFLATE) {
+ return enif_make_badarg(env);
+ }
+
+ if(!enif_inspect_iovec(env, 256, argv[1], &tail, &iovec)) {
+ return enif_make_badarg(env);
+ }
+
+ if(!enif_ioq_enqv(d->input_queue, iovec, 0)) {
+ return enif_make_badarg(env);
+ }
+
+ if(!enif_is_empty_list(env, tail)) {
+ return enif_make_tuple2(env, am_continue, tail);
+ }
+
+ return am_ok;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 05:43:09 +0000