Share ndr_compression.c.

1 files changed, 0 insertions, 516 deletions

diff --git a/source4/librpc/ndr/ndr_compression.c b/source4/librpc/ndr/ndr_compression.c
deleted file mode 100644
index 05a80e20b2..0000000000
--- a/source4/librpc/ndr/ndr_compression.c
+++ /dev/null
@@ -1,516 +0,0 @@
-/* 
-   Unix SMB/CIFS implementation.
-
-   libndr compression support
-
-   Copyright (C) Stefan Metzmacher 2005
-   Copyright (C) Matthieu Suiche 2008
-   
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
-   
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-   
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "includes.h"
-#include "../lib/compression/lzxpress.h"
-#include "librpc/ndr/libndr.h"
-#include "librpc/ndr/ndr_compression.h"
-#include <zlib.h>
-
-static voidpf ndr_zlib_alloc(voidpf opaque, uInt items, uInt size)
-{
-	return talloc_zero_size(opaque, items * size);
-}
-
-static void  ndr_zlib_free(voidpf opaque, voidpf address)
-{
-	talloc_free(address);
-}
-
-static enum ndr_err_code ndr_pull_compression_mszip_chunk(struct ndr_pull *ndrpull,
-						 struct ndr_push *ndrpush,
-						 z_stream *z,
-						 bool *last)
-{
-	DATA_BLOB comp_chunk;
-	uint32_t comp_chunk_offset;
-	uint32_t comp_chunk_size;
-	DATA_BLOB plain_chunk;
-	uint32_t plain_chunk_offset;
-	uint32_t plain_chunk_size;
-	int z_ret;
-
-	NDR_CHECK(ndr_pull_uint32(ndrpull, NDR_SCALARS, &plain_chunk_size));
-	if (plain_chunk_size > 0x00008000) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION, "Bad MSZIP plain chunk size %08X > 0x00008000 (PULL)", 
-				      plain_chunk_size);
-	}
-
-	NDR_CHECK(ndr_pull_uint32(ndrpull, NDR_SCALARS, &comp_chunk_size));
-
-	DEBUG(9,("MSZIP plain_chunk_size: %08X (%u) comp_chunk_size: %08X (%u)\n",
-		 plain_chunk_size, plain_chunk_size, comp_chunk_size, comp_chunk_size));
-
-	comp_chunk_offset = ndrpull->offset;
-	NDR_CHECK(ndr_pull_advance(ndrpull, comp_chunk_size));
-	comp_chunk.length = comp_chunk_size;
-	comp_chunk.data = ndrpull->data + comp_chunk_offset;
-
-	plain_chunk_offset = ndrpush->offset;
-	NDR_CHECK(ndr_push_zero(ndrpush, plain_chunk_size));
-	plain_chunk.length = plain_chunk_size;
-	plain_chunk.data = ndrpush->data + plain_chunk_offset;
-
-	if (comp_chunk.length < 2) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "Bad MSZIP comp chunk size %u < 2 (PULL)",
-				      (unsigned int)comp_chunk.length);
-	}
-	/* CK = Chris Kirmse, official Microsoft purloiner */
-	if (comp_chunk.data[0] != 'C' ||
-	    comp_chunk.data[1] != 'K') {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "Bad MSZIP invalid prefix [%c%c] != [CK]",
-				      comp_chunk.data[0], comp_chunk.data[1]);
-	}
-
-	z->next_in	= comp_chunk.data + 2;
-	z->avail_in	= comp_chunk.length -2;
-	z->total_in	= 0;
-
-	z->next_out	= plain_chunk.data;
-	z->avail_out	= plain_chunk.length;
-	z->total_out	= 0;
-
-	if (!z->opaque) {
-		/* the first time we need to intialize completely */
-		z->zalloc	= ndr_zlib_alloc;
-		z->zfree	= ndr_zlib_free;
-		z->opaque	= ndrpull;
-
-		z_ret = inflateInit2(z, -15);
-		if (z_ret != Z_OK) {
-			return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-					      "Bad inflateInit2 error %s(%d) (PULL)",
-					      zError(z_ret), z_ret);
-
-		}
-	}
-
-	/* call inflate untill we get Z_STREAM_END or an error */
-	while (true) {
-		z_ret = inflate(z, Z_BLOCK);
-		if (z_ret != Z_OK) break;
-	}
-
-	if (z_ret != Z_STREAM_END) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "Bad inflate(Z_BLOCK) error %s(%d) (PULL)",
-				      zError(z_ret), z_ret);
-	}
-
-	if (z->avail_in) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "MSZIP not all avail_in[%u] bytes consumed (PULL)",
-				      z->avail_in);
-	}
-
-	if (z->avail_out) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "MSZIP not all avail_out[%u] bytes consumed (PULL)",
-				      z->avail_out);
-	}
-
-	if ((plain_chunk_size < 0x00008000) || (ndrpull->offset+4 >= ndrpull->data_size)) {
-		/* this is the last chunk */
-		*last = true;
-	}
-
-	z_ret = inflateReset(z);
-	if (z_ret != Z_OK) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "Bad inflateReset error %s(%d) (PULL)",
-				      zError(z_ret), z_ret);
-	}
-
-	z_ret = inflateSetDictionary(z, plain_chunk.data, plain_chunk.length);
-	if (z_ret != Z_OK) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "Bad inflateSetDictionary error %s(%d) (PULL)",
-				      zError(z_ret), z_ret);
-	}
-
-	return NDR_ERR_SUCCESS;
-}
-
-static enum ndr_err_code ndr_push_compression_mszip_chunk(struct ndr_push *ndrpush,
-							  struct ndr_pull *ndrpull,
-							  z_stream *z,
-							  bool *last)
-{
-	DATA_BLOB comp_chunk;
-	uint32_t comp_chunk_size;
-	uint32_t comp_chunk_size_offset;
-	DATA_BLOB plain_chunk;
-	uint32_t plain_chunk_size;
-	uint32_t plain_chunk_offset;
-	uint32_t max_plain_size = 0x00008000;
-	uint32_t max_comp_size = 0x00008000 + 2 + 12 /*TODO: what value do we really need here?*/;
-	uint32_t tmp_offset;
-	int z_ret;
-
-	plain_chunk_size = MIN(max_plain_size, ndrpull->data_size - ndrpull->offset);
-	plain_chunk_offset = ndrpull->offset;
-	NDR_CHECK(ndr_pull_advance(ndrpull, plain_chunk_size));
-
-	plain_chunk.data = ndrpull->data + plain_chunk_offset;
-	plain_chunk.length = plain_chunk_size;
-
-	if (plain_chunk_size < max_plain_size) {
-		*last = true;
-	}
-
-	NDR_CHECK(ndr_push_uint32(ndrpush, NDR_SCALARS, plain_chunk_size));
-	comp_chunk_size_offset = ndrpush->offset;
-	NDR_CHECK(ndr_push_uint32(ndrpush, NDR_SCALARS, 0xFEFEFEFE));
-
-	NDR_CHECK(ndr_push_expand(ndrpush, max_comp_size));
-
-	comp_chunk.data = ndrpush->data + ndrpush->offset;
-	comp_chunk.length = max_comp_size;
-
-	/* CK = Chris Kirmse, official Microsoft purloiner */
-	comp_chunk.data[0] = 'C';
-	comp_chunk.data[1] = 'K';
-
-	z->next_in	= plain_chunk.data;
-	z->avail_in	= plain_chunk.length;
-	z->total_in	= 0;
-
-	z->next_out	= comp_chunk.data + 2;
-	z->avail_out	= comp_chunk.length - 2;
-	z->total_out	= 0;
-
-	if (!z->opaque) {
-		/* the first time we need to intialize completely */
-		z->zalloc	= ndr_zlib_alloc;
-		z->zfree	= ndr_zlib_free;
-		z->opaque	= ndrpull;
-
-		/* TODO: find how to trigger the same parameters windows uses */
-		z_ret = deflateInit2(z,
-				     Z_DEFAULT_COMPRESSION,
-				     Z_DEFLATED,
-				     -15,
-				     9,
-				     Z_DEFAULT_STRATEGY);
-		if (z_ret != Z_OK) {
-			return ndr_push_error(ndrpush, NDR_ERR_COMPRESSION,
-					      "Bad deflateInit2 error %s(%d) (PUSH)",
-					      zError(z_ret), z_ret);
-
-		}
-	}
-
-	/* call deflate untill we get Z_STREAM_END or an error */
-	while (true) {
-		z_ret = deflate(z, Z_FINISH);
-		if (z_ret != Z_OK) break;
-	}
-	if (z_ret != Z_STREAM_END) {
-		return ndr_push_error(ndrpush, NDR_ERR_COMPRESSION,
-				      "Bad delate(Z_BLOCK) error %s(%d) (PUSH)",
-				      zError(z_ret), z_ret);
-	}
-
-	if (z->avail_in) {
-		return ndr_push_error(ndrpush, NDR_ERR_COMPRESSION,
-				      "MSZIP not all avail_in[%u] bytes consumed (PUSH)",
-				      z->avail_in);
-	}
-
-	comp_chunk_size = 2 + z->total_out;
-
-	z_ret = deflateReset(z);
-	if (z_ret != Z_OK) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "Bad deflateReset error %s(%d) (PULL)",
-				      zError(z_ret), z_ret);
-	}
-
-	z_ret = deflateSetDictionary(z, plain_chunk.data, plain_chunk.length);
-	if (z_ret != Z_OK) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "Bad deflateSetDictionary error %s(%d) (PULL)",
-				      zError(z_ret), z_ret);
-	}
-
-	tmp_offset = ndrpush->offset;
-	ndrpush->offset = comp_chunk_size_offset;
-	NDR_CHECK(ndr_push_uint32(ndrpush, NDR_SCALARS, comp_chunk_size));
-	ndrpush->offset = tmp_offset;
-
-	DEBUG(9,("MSZIP comp plain_chunk_size: %08X (%u) comp_chunk_size: %08X (%u)\n",
-		 plain_chunk.length, plain_chunk.length, comp_chunk_size, comp_chunk_size));
-
-	ndrpush->offset += comp_chunk_size;
-	return NDR_ERR_SUCCESS;
-}
-
-static enum ndr_err_code ndr_pull_compression_xpress_chunk(struct ndr_pull *ndrpull,
-						  struct ndr_push *ndrpush,
-						  bool *last)
-{
-	DATA_BLOB comp_chunk;
-	DATA_BLOB plain_chunk;
-	uint32_t comp_chunk_offset;
-	uint32_t plain_chunk_offset;
-	uint32_t comp_chunk_size;
-	uint32_t plain_chunk_size;
-	ssize_t ret;
-
-	NDR_CHECK(ndr_pull_uint32(ndrpull, NDR_SCALARS, &plain_chunk_size));
-	if (plain_chunk_size > 0x00010000) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION, "Bad XPRESS plain chunk size %08X > 0x00010000 (PULL)", 
-				      plain_chunk_size);
-	}
-
-	NDR_CHECK(ndr_pull_uint32(ndrpull, NDR_SCALARS, &comp_chunk_size));
-
-	comp_chunk_offset = ndrpull->offset;
-	NDR_CHECK(ndr_pull_advance(ndrpull, comp_chunk_size));
-	comp_chunk.length = comp_chunk_size;
-	comp_chunk.data = ndrpull->data + comp_chunk_offset;
-
-	plain_chunk_offset = ndrpush->offset;
-	NDR_CHECK(ndr_push_zero(ndrpush, plain_chunk_size));
-	plain_chunk.length = plain_chunk_size;
-	plain_chunk.data = ndrpush->data + plain_chunk_offset;
-
-	DEBUG(9,("XPRESS plain_chunk_size: %08X (%u) comp_chunk_size: %08X (%u)\n",
-		 plain_chunk_size, plain_chunk_size, comp_chunk_size, comp_chunk_size));
-
-	/* Uncompressing the buffer using LZ Xpress algorithm */
-	ret = lzxpress_decompress(comp_chunk.data,
-				  comp_chunk.length,
-				  plain_chunk.data,
-				  plain_chunk.length);
-	if (ret < 0) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "XPRESS lzxpress_decompress() returned %d\n",
-				      ret);
-	}
-	plain_chunk.length = ret;
-
-	if ((plain_chunk_size < 0x00010000) || (ndrpull->offset+4 >= ndrpull->data_size)) {
-		/* this is the last chunk */
-		*last = true;
-	}
-
-	return NDR_ERR_SUCCESS;
-}
-
-static enum ndr_err_code ndr_push_compression_xpress_chunk(struct ndr_push *ndrpush,
-							   struct ndr_pull *ndrpull,
-							   bool *last)
-{
-	DATA_BLOB comp_chunk;
-	uint32_t comp_chunk_size_offset;
-	DATA_BLOB plain_chunk;
-	uint32_t plain_chunk_size;
-	uint32_t plain_chunk_offset;
-	uint32_t max_plain_size = 0x00010000;
-	uint32_t max_comp_size = 0x00020000 + 2; /* TODO: use the correct value here */
-	uint32_t tmp_offset;
-	ssize_t ret;
-
-	plain_chunk_size = MIN(max_plain_size, ndrpull->data_size - ndrpull->offset);
-	plain_chunk_offset = ndrpull->offset;
-	NDR_CHECK(ndr_pull_advance(ndrpull, plain_chunk_size));
-
-	plain_chunk.data = ndrpull->data + plain_chunk_offset;
-	plain_chunk.length = plain_chunk_size;
-
-	if (plain_chunk_size < max_plain_size) {
-		*last = true;
-	}
-
-	NDR_CHECK(ndr_push_uint32(ndrpush, NDR_SCALARS, plain_chunk_size));
-	comp_chunk_size_offset = ndrpush->offset;
-	NDR_CHECK(ndr_push_uint32(ndrpush, NDR_SCALARS, 0xFEFEFEFE));
-
-	NDR_CHECK(ndr_push_expand(ndrpush, max_comp_size));
-
-	comp_chunk.data = ndrpush->data + ndrpush->offset;
-	comp_chunk.length = max_comp_size;
-
-	/* Compressing the buffer using LZ Xpress algorithm */
-	ret = lzxpress_compress(plain_chunk.data,
-				plain_chunk.length,
-				comp_chunk.data,
-				comp_chunk.length);
-	if (ret < 0) {
-		return ndr_pull_error(ndrpull, NDR_ERR_COMPRESSION,
-				      "XPRESS lzxpress_compress() returned %d\n",
-				      ret);
-	}
-	comp_chunk.length = ret;
-
-	tmp_offset = ndrpush->offset;
-	ndrpush->offset = comp_chunk_size_offset;
-	NDR_CHECK(ndr_push_uint32(ndrpush, NDR_SCALARS, comp_chunk.length));
-	ndrpush->offset = tmp_offset;
-
-	ndrpush->offset += comp_chunk.length;
-	return NDR_ERR_SUCCESS;
-}
-
-/*
-  handle compressed subcontext buffers, which in midl land are user-marshalled, but
-  we use magic in pidl to make them easier to cope with
-*/
-enum ndr_err_code ndr_pull_compression_start(struct ndr_pull *subndr,
-				    struct ndr_pull **_comndr,
-				    enum ndr_compression_alg compression_alg,
-				    ssize_t decompressed_len)
-{
-	struct ndr_push *ndrpush;
-	struct ndr_pull *comndr;
-	DATA_BLOB uncompressed;
-	bool last = false;
-	z_stream z;
-
-	ndrpush = ndr_push_init_ctx(subndr, subndr->iconv_convenience);
-	NDR_ERR_HAVE_NO_MEMORY(ndrpush);
-
-	switch (compression_alg) {
-	case NDR_COMPRESSION_MSZIP:
-		ZERO_STRUCT(z);
-		while (!last) {
-			NDR_CHECK(ndr_pull_compression_mszip_chunk(subndr, ndrpush, &z, &last));
-		}
-		break;
-
-	case NDR_COMPRESSION_XPRESS:
-		while (!last) {
-			NDR_CHECK(ndr_pull_compression_xpress_chunk(subndr, ndrpush, &last));
-		}
-		break;
-
-	default:
-		return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad compression algorithm %d (PULL)",
-				      compression_alg);
-	}
-
-	uncompressed = ndr_push_blob(ndrpush);
-	if (uncompressed.length != decompressed_len) {
-		return ndr_pull_error(subndr, NDR_ERR_COMPRESSION,
-				      "Bad uncompressed_len [%u] != [%u](0x%08X) (PULL)",
-				      (int)uncompressed.length,
-				      (int)decompressed_len,
-				      (int)decompressed_len);
-	}
-
-	comndr = talloc_zero(subndr, struct ndr_pull);
-	NDR_ERR_HAVE_NO_MEMORY(comndr);
-	comndr->flags		= subndr->flags;
-	comndr->current_mem_ctx	= subndr->current_mem_ctx;
-
-	comndr->data		= uncompressed.data;
-	comndr->data_size	= uncompressed.length;
-	comndr->offset		= 0;
-
-	comndr->iconv_convenience = talloc_reference(comndr, subndr->iconv_convenience);
-
-	*_comndr = comndr;
-	return NDR_ERR_SUCCESS;
-}
-
-enum ndr_err_code ndr_pull_compression_end(struct ndr_pull *subndr,
-				  struct ndr_pull *comndr,
-				  enum ndr_compression_alg compression_alg,
-				  ssize_t decompressed_len)
-{
-	return NDR_ERR_SUCCESS;
-}
-
-/*
-  push a compressed subcontext
-*/
-enum ndr_err_code ndr_push_compression_start(struct ndr_push *subndr,
-				    struct ndr_push **_uncomndr,
-				    enum ndr_compression_alg compression_alg,
-				    ssize_t decompressed_len)
-{
-	struct ndr_push *uncomndr;
-
-	switch (compression_alg) {
-	case NDR_COMPRESSION_MSZIP:
-	case NDR_COMPRESSION_XPRESS:
-		break;
-	default:
-		return ndr_push_error(subndr, NDR_ERR_COMPRESSION,
-				      "Bad compression algorithm %d (PUSH)",
-				      compression_alg);
-	}
-
-	uncomndr = ndr_push_init_ctx(subndr, subndr->iconv_convenience);
-	NDR_ERR_HAVE_NO_MEMORY(uncomndr);
-	uncomndr->flags	= subndr->flags;
-
-	*_uncomndr = uncomndr;
-	return NDR_ERR_SUCCESS;
-}
-
-/*
-  push a compressed subcontext
-*/
-enum ndr_err_code ndr_push_compression_end(struct ndr_push *subndr,
-				  struct ndr_push *uncomndr,
-				  enum ndr_compression_alg compression_alg,
-				  ssize_t decompressed_len)
-{
-	struct ndr_pull *ndrpull;
-	bool last = false;
-	z_stream z;
-
-	ndrpull = talloc_zero(uncomndr, struct ndr_pull);
-	NDR_ERR_HAVE_NO_MEMORY(ndrpull);
-	ndrpull->flags		= uncomndr->flags;
-	ndrpull->data		= uncomndr->data;
-	ndrpull->data_size	= uncomndr->offset;
-	ndrpull->offset		= 0;
-
-	ndrpull->iconv_convenience = talloc_reference(ndrpull, subndr->iconv_convenience);
-
-	switch (compression_alg) {
-	case NDR_COMPRESSION_MSZIP:
-		ZERO_STRUCT(z);
-		while (!last) {
-			NDR_CHECK(ndr_push_compression_mszip_chunk(subndr, ndrpull, &z, &last));
-		}
-		break;
-
-	case NDR_COMPRESSION_XPRESS:
-		while (!last) {
-			NDR_CHECK(ndr_push_compression_xpress_chunk(subndr, ndrpull, &last));
-		}
-		break;
-
-	default:
-		return ndr_push_error(subndr, NDR_ERR_COMPRESSION, "Bad compression algorithm %d (PUSH)", 
-				      compression_alg);
-	}
-
-	talloc_free(uncomndr);
-	return NDR_ERR_SUCCESS;
-}