From e23cc70a72e6582e91bcfdaf1d6ed2191e7e23a6 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 20 May 2006 19:03:06 +0000
Subject: [PATCH] r15760: - add RAW_READ_SMB2 => generic mapping - Implement
 SMB2 Read

metze
(This used to be commit d0ac0c5af44ba5aa8b18106c2ac26c0d194e59b4)
---
 source4/ntvfs/ntvfs_generic.c    | 25 +++++++++++++++++---
 source4/smb_server/smb2/fileio.c | 40 +++++++++++++++++++++++++++++++-
 2 files changed, 61 insertions(+), 4 deletions(-)

diff --git a/source4/ntvfs/ntvfs_generic.c b/source4/ntvfs/ntvfs_generic.c
index 119fef2c6dd..922093a0a96 100644
--- a/source4/ntvfs/ntvfs_generic.c
+++ b/source4/ntvfs/ntvfs_generic.c
@@ -1165,13 +1165,16 @@ static NTSTATUS ntvfs_map_read_finish(struct ntvfs_module_context *ntvfs,
 {
 	switch (rd->generic.level) {
 	case RAW_READ_READ:
-		rd->read.out.nread        = rd2->generic.out.nread;
+		rd->read.out.nread	= rd2->generic.out.nread;
 		break;
 	case RAW_READ_READBRAW:
-		rd->readbraw.out.nread    = rd2->generic.out.nread;
+		rd->readbraw.out.nread	= rd2->generic.out.nread;
 		break;
 	case RAW_READ_LOCKREAD:
-		rd->lockread.out.nread = rd2->generic.out.nread;
+		rd->lockread.out.nread	= rd2->generic.out.nread;
+		break;
+	case RAW_READ_SMB2:
+		rd->smb2.out.data.length= rd2->generic.out.nread;
 		break;
 	default:
 		return NT_STATUS_INVALID_LEVEL;
@@ -1259,6 +1262,22 @@ _PUBLIC_ NTSTATUS ntvfs_map_read(struct ntvfs_module_context *ntvfs,
 			status = ntvfs->ops->read(ntvfs, req, rd2);
 		}
 		break;
+
+	case RAW_READ_SMB2:
+		if (rd->smb2.in.length > UINT16_MAX) {
+			DEBUG(0,("%s: mapping SMB2 => generic length to large %u!\n",
+				__FUNCTION__, rd->smb2.in.length));
+			status = NT_STATUS_FOOBAR;
+			goto done;
+		}
+		rd2->readx.in.file.ntvfs= rd->smb2.in.file.ntvfs;
+		rd2->readx.in.offset    = rd->smb2.in.offset;
+		rd2->readx.in.mincnt    = rd->smb2.in.length;
+		rd2->readx.in.maxcnt    = rd->smb2.in.length;
+		rd2->readx.in.remaining = 0;
+		rd2->readx.out.data     = rd->smb2.out.data.data;
+		status = ntvfs->ops->read(ntvfs, req, rd2);
+		break;
 	}
 
 done:
diff --git a/source4/smb_server/smb2/fileio.c b/source4/smb_server/smb2/fileio.c
index e46a42c2d87..d1900496313 100644
--- a/source4/smb_server/smb2/fileio.c
+++ b/source4/smb_server/smb2/fileio.c
@@ -148,9 +148,47 @@ void smb2srv_flush_recv(struct smb2srv_request *req)
 	SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_flush(req->ntvfs, io));
 }
 
+static void smb2srv_read_send(struct ntvfs_request *ntvfs)
+{
+	struct smb2srv_request *req;
+	union smb_read *io;
+
+	SMB2SRV_CHECK_ASYNC_STATUS(io, union smb_read);
+	SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x10, True, 0));
+
+	SMB2SRV_CHECK(smb2_push_o16s32_blob(&req->out, 0x02, io->smb2.out.data));
+	SBVAL(req->out.body,	0x08,	io->smb2.out.unknown1);
+	SCVAL(req->out.body,	0x10,	0);
+
+	smb2srv_send_reply(req);
+}
+
 void smb2srv_read_recv(struct smb2srv_request *req)
 {
-	smb2srv_send_error(req, NT_STATUS_NOT_IMPLEMENTED);
+	union smb_read *io;
+
+	SMB2SRV_CHECK_BODY_SIZE(req, 0x30, True);
+	SMB2SRV_TALLOC_IO_PTR(io, union smb_read);
+	SMB2SRV_SETUP_NTVFS_REQUEST(smb2srv_read_send, NTVFS_ASYNC_STATE_MAY_ASYNC);
+
+	io->smb2.level			= RAW_READ_SMB2;
+	io->smb2.in._pad		= SVAL(req->in.body, 0x02);
+	io->smb2.in.length		= IVAL(req->in.body, 0x04);
+	io->smb2.in.offset		= BVAL(req->in.body, 0x08);
+	io->smb2.in.file.ntvfs		= smb2srv_pull_handle(req, req->in.body, 0x10);
+	io->smb2.in.unknown1		= BVAL(req->in.body, 0x20);
+	io->smb2.in.unknown2		= BVAL(req->in.body, 0x28);
+	io->smb2.in._bug		= CVAL(req->in.body, 0x30);
+
+	SMB2SRV_CHECK_FILE_HANDLE(io->smb2.in.file.ntvfs);
+
+	/* preallocate the buffer for the backends */
+	io->smb2.out.data = data_blob_talloc(io, NULL, io->smb2.in.length);
+	if (io->smb2.out.data.length != io->smb2.in.length) {
+		SMB2SRV_CHECK(NT_STATUS_NO_MEMORY);
+	}
+
+	SMB2SRV_CALL_NTVFS_BACKEND(ntvfs_read(req->ntvfs, io));
 }
 
 static void smb2srv_write_send(struct ntvfs_request *ntvfs)