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-rw-r--r--source4/build/pidl/ndr_parser.pm138
-rw-r--r--source4/configure.in1
-rw-r--r--source4/librpc/config.m435
-rw-r--r--source4/librpc/config.mk3
-rw-r--r--source4/librpc/idl/drsuapi.idl8
-rw-r--r--source4/librpc/ndr/libndr.h5
-rw-r--r--source4/librpc/ndr/ndr_compression.c177
7 files changed, 359 insertions, 8 deletions
diff --git a/source4/build/pidl/ndr_parser.pm b/source4/build/pidl/ndr_parser.pm
index a689a8a849..6f8029d338 100644
--- a/source4/build/pidl/ndr_parser.pm
+++ b/source4/build/pidl/ndr_parser.pm
@@ -470,6 +470,92 @@ sub ParseArrayPull($$$$)
}
}
+sub compression_alg($)
+{
+ my $e = shift;
+ my $compression = util::has_property($e, "compression");
+ my ($alg, $clen, $dlen) = split(/ /, $compression);
+
+ return $alg;
+}
+
+sub compression_clen($)
+{
+ my $e = shift;
+ my $compression = util::has_property($e, "compression");
+ my ($alg, $clen, $dlen) = split(/ /, $compression);
+
+ return ParseExpr($e, $clen, "r->");
+}
+
+sub compression_dlen($)
+{
+ my $e = shift;
+ my $compression = util::has_property($e, "compression");
+ my ($alg, $clen, $dlen) = split(/ /, $compression);
+
+ return ParseExpr($e, $dlen, "r->");
+}
+
+sub ParseCompressionPushStart($$$)
+{
+ my $e = shift;
+ my $subndr = shift;
+ my $ndr_flags = shift;
+ my $comndr = $subndr."_compressed";
+
+ pidl "{";
+ indent;
+ pidl "struct ndr_push *$comndr;";
+ pidl "";
+ pidl "$comndr = ndr_push_init_ctx($subndr);";
+ pidl "if (!$comndr) return NT_STATUS_NO_MEMORY;";
+ pidl "$comndr->flags = $subndr->flags;";
+ pidl "";
+
+ return $comndr;
+}
+
+sub ParseCompressionPushEnd($$)
+{
+ my $e = shift;
+ my $subndr = shift;
+ my $comndr = $subndr."_compressed";
+ my $alg = compression_alg($e);
+
+ pidl "NDR_CHECK(ndr_push_compression($subndr, $comndr, $alg));";
+ deindent;
+ pidl "}";
+}
+
+sub ParseCompressionPullStart($$$)
+{
+ my $e = shift;
+ my $subndr = shift;
+ my $ndr_flags = shift;
+ my $comndr = $subndr."_compressed";
+ my $alg = compression_alg($e);
+ my $dlen = compression_dlen($e);
+
+ pidl "{";
+ indent;
+ pidl "struct ndr_pull *$comndr;";
+ pidl "NDR_ALLOC($subndr, $comndr);";
+ pidl "NDR_CHECK(ndr_pull_compression($subndr, $comndr, $alg, $dlen));";
+
+ return $comndr;
+}
+
+sub ParseCompressionPullEnd($$)
+{
+ my $e = shift;
+ my $subndr = shift;
+ my $comndr = $subndr."_compressed";
+
+ deindent;
+ pidl "}";
+}
+
sub ParseSubcontextPushStart($$)
{
my $e = shift;
@@ -551,7 +637,10 @@ sub ParseElementPushScalar($$$)
my $cprefix = c_push_prefix($e);
my $ptr_prefix = c_ptr_prefix($e);
my $sub_size = util::has_property($e, "subcontext");
+ my $compression = util::has_property($e, "compression");
my $ndr = "ndr";
+ my $subndr = undef;
+ my $comndr = undef;
start_flags($e);
@@ -560,7 +649,12 @@ sub ParseElementPushScalar($$$)
}
if (defined $sub_size and $e->{POINTERS} == 0) {
- $ndr = ParseSubcontextPushStart($e, "NDR_SCALARS");
+ $subndr = ParseSubcontextPushStart($e, "NDR_SCALARS");
+ $ndr = $subndr;
+ if (defined $compression) {
+ $comndr = ParseCompressionPushStart($e, $subndr, "NDR_SCALARS");
+ $ndr = $comndr;
+ }
}
if (Ndr::need_wire_pointer($e)) {
@@ -578,6 +672,9 @@ sub ParseElementPushScalar($$$)
}
if (defined $sub_size and $e->{POINTERS} == 0) {
+ if (defined $compression) {
+ ParseCompressionPushEnd($e, $subndr);
+ }
ParseSubcontextPushEnd($e);
}
@@ -698,13 +795,21 @@ sub ParseElementPullScalar($$$)
my $cprefix = c_pull_prefix($e);
my $ptr_prefix = c_ptr_prefix($e);
my $sub_size = util::has_property($e, "subcontext");
+ my $compression = util::has_property($e, "compression");
my $ndr = "ndr";
+ my $subndr = undef;
+ my $comndr = undef;
start_flags($e);
if (defined $sub_size && $e->{POINTERS} == 0) {
- $ndr = ParseSubcontextPullStart($e, $ndr_flags);
+ $subndr = ParseSubcontextPullStart($e, $ndr_flags);
+ $ndr = $subndr;
$ndr_flags = "NDR_SCALARS|NDR_BUFFERS";
+ if (defined $compression) {
+ $comndr = ParseCompressionPullStart($e, $subndr, $ndr_flags);
+ $ndr = $comndr;
+ }
}
if (Ndr::is_inline_array($e)) {
@@ -728,6 +833,9 @@ sub ParseElementPullScalar($$$)
}
if (defined $sub_size && $e->{POINTERS} == 0) {
+ if (defined $compression) {
+ ParseCompressionPullEnd($e, $subndr);
+ }
ParseSubcontextPullEnd($e);
}
@@ -766,7 +874,10 @@ sub ParseElementPushBuffer($$)
my($var_prefix) = shift;
my $cprefix = c_push_prefix($e);
my $sub_size = util::has_property($e, "subcontext");
+ my $compression = util::has_property($e, "compression");
my $ndr = "ndr";
+ my $subndr = undef;
+ my $comndr = undef;
return unless (need_buffers_section($e));
@@ -793,8 +904,13 @@ sub ParseElementPushBuffer($$)
}
if (defined $sub_size) {
- $ndr = ParseSubcontextPushStart($e, $ndr_flags);
+ $subndr = ParseSubcontextPushStart($e, $ndr_flags);
+ $ndr = $subndr;
$ndr_flags = "NDR_SCALARS|NDR_BUFFERS";
+ if (defined $compression) {
+ $comndr = ParseCompressionPushStart($e, $subndr, $ndr_flags);
+ $ndr = $comndr;
+ }
}
if (util::array_size($e)) {
@@ -808,6 +924,9 @@ sub ParseElementPushBuffer($$)
}
if (defined $sub_size) {
+ if (defined $compression) {
+ ParseCompressionPushEnd($e, $subndr);
+ }
ParseSubcontextPushEnd($e);
}
@@ -827,7 +946,10 @@ sub ParseElementPullBuffer($$)
my($var_prefix) = shift;
my $cprefix = c_pull_prefix($e);
my $sub_size = util::has_property($e, "subcontext");
+ my $compression = util::has_property($e, "compression");
my $ndr = "ndr";
+ my $subndr = undef;
+ my $comndr = undef;
return unless (need_buffers_section($e));
@@ -856,8 +978,13 @@ sub ParseElementPullBuffer($$)
}
if (defined $sub_size) {
- $ndr = ParseSubcontextPullStart($e, $ndr_flags);
+ $subndr = ParseSubcontextPullStart($e, $ndr_flags);
+ $ndr = $subndr;
$ndr_flags = "NDR_SCALARS|NDR_BUFFERS";
+ if (defined $compression) {
+ $comndr = ParseCompressionPullStart($e, $subndr, $ndr_flags);
+ $ndr = $comndr;
+ }
}
if (util::array_size($e)) {
@@ -871,6 +998,9 @@ sub ParseElementPullBuffer($$)
}
if (defined $sub_size) {
+ if (defined $compression) {
+ ParseCompressionPullEnd($e, $subndr);
+ }
ParseSubcontextPullEnd($e);
}
diff --git a/source4/configure.in b/source4/configure.in
index 5791a57adf..366f038030 100644
--- a/source4/configure.in
+++ b/source4/configure.in
@@ -22,6 +22,7 @@ SMB_INCLUDE_M4(lib/cmdline/config.m4)
SMB_INCLUDE_M4(param/config.m4)
SMB_INCLUDE_M4(libcli/auth/gensec.m4)
SMB_INCLUDE_M4(libcli/config.m4)
+SMB_INCLUDE_M4(librpc/config.m4)
SMB_INCLUDE_M4(smbd/process_model.m4)
SMB_INCLUDE_M4(lib/registry/config.m4)
SMB_INCLUDE_M4(scripting/config.m4)
diff --git a/source4/librpc/config.m4 b/source4/librpc/config.m4
new file mode 100644
index 0000000000..d67e880a38
--- /dev/null
+++ b/source4/librpc/config.m4
@@ -0,0 +1,35 @@
+########################################################
+# Compile with compression support
+
+with_zlib_support=auto
+ZLIB_LIBS=""
+ZLIB_CFLAGS=""
+ZLIB_CPPFLAGS=""
+ZLIB_LDFLAGS=""
+
+AC_CHECK_HEADERS(zlib.h)
+if test x"$ac_cv_header_zlib_h" != x"yes"; then
+ with_zlib_support=no
+fi
+
+if test x"$with_zlib_support" != x"no"; then
+ AC_CHECK_LIB_EXT(z, ZLIB_LIBS, inflate)
+
+ if test x"$ac_cv_lib_ext_z_inflate" = x"yes"; then
+ AC_DEFINE(HAVE_ZLIB,1,[Whether zlib is available])
+ with_zlib_support=yes
+ SMB_EXT_LIB_ENABLE(ZLIB,YES)
+ else
+ ZLIB_LIBS=""
+ with_zlib_support=no
+ fi
+ LIBS=$ac_save_LIBS
+fi
+AC_MSG_CHECKING(whether ZLIB support is available)
+AC_MSG_RESULT($with_zlib_support)
+
+# for now enable this always but maybe all fields are empty
+# TODO: move compression methods to seperate files each
+SMB_EXT_LIB_ENABLE(ZLIB,YES)
+
+SMB_EXT_LIB(ZLIB,[${ZLIB_LIBS}],[${ZLIB_CFLAGS}],[${ZLIB_CPPFLAGS}],[${ZLIB_LDFLAGS}])
diff --git a/source4/librpc/config.mk b/source4/librpc/config.mk
index f6b05a41b5..d73f6bf96f 100644
--- a/source4/librpc/config.mk
+++ b/source4/librpc/config.mk
@@ -5,8 +5,9 @@ INIT_OBJ_FILES = \
librpc/ndr/ndr.o
ADD_OBJ_FILES = \
librpc/ndr/ndr_basic.o \
+ librpc/ndr/ndr_compression.o \
librpc/ndr/ndr_misc.o
-REQUIRED_SUBSYSTEMS = LIBCLI_UTILS
+REQUIRED_SUBSYSTEMS = LIBCLI_UTILS EXT_LIB_ZLIB
# End SUBSYSTEM LIBNDR_RAW
################################################
diff --git a/source4/librpc/idl/drsuapi.idl b/source4/librpc/idl/drsuapi.idl
index 330165830c..1b81dd6297 100644
--- a/source4/librpc/idl/drsuapi.idl
+++ b/source4/librpc/idl/drsuapi.idl
@@ -283,7 +283,8 @@ interface drsuapi
} drsuapi_DsReplicaCoursor2Ctr2;
typedef [v1_enum] enum {
- DRSUAPI_OBJECTCLASS_top = 0x0
+ DRSUAPI_OBJECTCLASS_top = 0x00010000,
+ DRSUAPI_OBJECTCLASS_test = 0x00000000
} drsuapi_DsObjectClassId;
typedef [v1_enum,public] enum {
@@ -497,9 +498,10 @@ interface drsuapi
} drsuapi_DsGetNCChangesCtr1;
typedef struct {
- uint32 unknown1;/* decompressed_length ? */
+ uint32 decompressed_length;
uint32 compressed_length;
- DATA_BLOB *compressed;
+ [subcontext(4),compression(NDR_COMPRESSION_ZLIB,compressed_length,decompressed_length),flag(NDR_REMAINING)] DATA_BLOB *decompressed;
+ /*[subcontext(4),compression(NDR_COMPRESSION_ZLIB,compressed_length,decompressed_length)] drsuapi_DsGetNCChangesCtr1 *ctr1;*/
} drsuapi_DsGetNCChangesCompressedInfo;
typedef struct {
diff --git a/source4/librpc/ndr/libndr.h b/source4/librpc/ndr/libndr.h
index 4df3e7f248..3cc25b0ef2 100644
--- a/source4/librpc/ndr/libndr.h
+++ b/source4/librpc/ndr/libndr.h
@@ -152,6 +152,7 @@ enum ndr_err_code {
NDR_ERR_CHARCNV,
NDR_ERR_LENGTH,
NDR_ERR_SUBCONTEXT,
+ NDR_ERR_COMPRESSION,
NDR_ERR_STRING,
NDR_ERR_VALIDATE,
NDR_ERR_BUFSIZE,
@@ -160,6 +161,10 @@ enum ndr_err_code {
NDR_ERR_TOKEN
};
+enum ndr_compression_alg {
+ NDR_COMPRESSION_ZLIB
+};
+
/*
flags passed to control parse flow
*/
diff --git a/source4/librpc/ndr/ndr_compression.c b/source4/librpc/ndr/ndr_compression.c
new file mode 100644
index 0000000000..d4f1a2a927
--- /dev/null
+++ b/source4/librpc/ndr/ndr_compression.c
@@ -0,0 +1,177 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ libndr compression support
+
+ Copyright (C) Stefan Metzmacher 2005
+
+ 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 2 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, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+#ifdef HAVE_ZLIB
+#include <zlib.h>
+
+static NTSTATUS ndr_pull_compression_zlib(struct ndr_pull *subndr,
+ struct ndr_pull *comndr,
+ ssize_t decompressed_len)
+{
+ DATA_BLOB inbuf;
+ DATA_BLOB outbuf = data_blob_talloc(comndr, NULL, decompressed_len);
+ uint32_t outbuf_len = outbuf.length;
+ struct z_stream_s zs;
+ int ret;
+
+ ZERO_STRUCT(zs);
+
+ if (subndr->data_size < 10) {
+ return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad ZLIB compressed header (PULL) subcontext size %d",
+ subndr->data_size);
+ }
+
+ inbuf.data = subndr->data+10;
+ inbuf.length = subndr->data_size-10;
+
+ zs.avail_in = inbuf.length;
+ zs.next_in = inbuf.data;
+ zs.next_out = outbuf.data;
+ zs.avail_out = outbuf.length;
+
+ ret = inflateInit2(&zs, 15);
+ if (ret != Z_OK) {
+ return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad ZLIB (PULL) inflateInit2 error %d",
+ ret);
+ }
+
+ while(1) {
+ ret = inflate(&zs, Z_SYNC_FLUSH);
+ if (ret == Z_STREAM_END) {
+
+ DEBUG(0,("inbuf.length: %d avail_in: %d, avail_out: %d\n", inbuf.length, zs.avail_in, zs.avail_out));
+ break;
+ }
+ if (ret != Z_OK) {
+ return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad ZLIB (PULL) inflate error %d",
+ ret);
+ }
+ }
+
+ inflateEnd(&zs);
+
+ /* TODO: check if the decompressed_len == outbuf_len */
+ outbuf.length = outbuf_len - zs.avail_out;
+
+ if (outbuf.length < 16) {
+ return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad ZLIB uncompressed header (PULL) uncompressed size %d",
+ outbuf.length);
+ }
+
+ outbuf.data += 16;
+ outbuf.length -= 16;
+
+ /* TODO: really decompress the data here */
+ *comndr = *subndr;
+ comndr->data = outbuf.data;
+ comndr->data_size = outbuf.length;
+ comndr->offset = 0;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS ndr_push_compression_zlib(struct ndr_push *subndr,
+ struct ndr_push *comndr)
+{
+ DATA_BLOB inbuf;
+ DATA_BLOB outbuf = data_blob_talloc(comndr, NULL, comndr->offset + 10);
+ struct z_stream_s zs;
+ int ret;
+
+ ZERO_STRUCT(zs);
+
+ inbuf = ndr_push_blob(comndr);
+
+ zs.avail_in = inbuf.length;
+ zs.next_in = inbuf.data;
+ zs.next_out = outbuf.data+10;
+ zs.avail_out = outbuf.length-10;
+
+ ret = deflateInit(&zs, Z_DEFAULT_COMPRESSION);
+ if (ret != Z_OK) {
+ return ndr_push_error(subndr, NDR_ERR_COMPRESSION, "Bad ZLIB (PUSH) deflateInit2 error %d",
+ ret);
+ }
+
+ ret = deflate(&zs, Z_SYNC_FLUSH);
+
+ if (ret != Z_OK && ret != Z_STREAM_END) {
+ return ndr_push_error(subndr, NDR_ERR_COMPRESSION, "Bad ZLIB (PULL) deflate error %d",
+ ret);
+ }
+
+ deflateEnd(&zs);
+
+ /* TODO: push the header here */
+
+
+ NDR_CHECK(ndr_push_bytes(subndr, outbuf.data, outbuf.length));
+
+ return NT_STATUS_OK;
+}
+#endif
+
+/*
+ handle compressed subcontext buffers, which in midl land are user-marshalled, but
+ we use magic in pidl to make them easier to cope with
+*/
+NTSTATUS ndr_pull_compression(struct ndr_pull *subndr,
+ struct ndr_pull *comndr,
+ enum ndr_compression_alg compression_alg,
+ ssize_t decompressed_len)
+{
+ comndr->flags = subndr->flags;
+
+ switch (compression_alg) {
+#ifdef HAVE_ZLIB
+ case NDR_COMPRESSION_ZLIB:
+ return ndr_pull_compression_zlib(subndr, comndr, decompressed_len);
+#endif
+ default:
+ return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad compression algorithm %d (PULL)",
+ compression_alg);
+ }
+ return NT_STATUS_OK;
+}
+
+/*
+ push a compressed subcontext
+*/
+NTSTATUS ndr_push_compression(struct ndr_push *subndr,
+ struct ndr_push *comndr,
+ enum ndr_compression_alg compression_alg)
+{
+ comndr->flags = subndr->flags;
+
+ switch (compression_alg) {
+#ifdef HAVE_ZLIB
+ case NDR_COMPRESSION_ZLIB:
+ return ndr_push_compression_zlib(subndr, comndr);
+#endif
+ default:
+ return ndr_push_error(subndr, NDR_ERR_COMPRESSION, "Bad compression algorithm %d (PUSH)",
+ compression_alg);
+ }
+ return NT_STATUS_OK;
+}
generated by cgit (git 2.34.1) at 2024-07-07 00:36:56 +0000