r11691: added reply buffer code checks and oplock flags for create request/reply

(This used to be commit 26ed781375c03958241d8c93324e04e948944d01)

7 files changed, 71 insertions, 30 deletions

diff --git a/source4/libcli/smb2/close.c b/source4/libcli/smb2/close.c
index 4429cd557b..b60c1b3071 100644
--- a/source4/libcli/smb2/close.c
+++ b/source4/libcli/smb2/close.c
@@ -35,8 +35,9 @@ struct smb2_request *smb2_close_send(struct smb2_tree *tree, struct smb2_close *
 	req = smb2_request_init_tree(tree, SMB2_OP_CLOSE, 0x18);
 	if (req == NULL) return NULL;
 
-	SIVAL(req->out.body, 0x00, io->in.unknown1);
-	SIVAL(req->out.body, 0x04, io->in.unknown2);
+	SSVAL(req->out.body, 0x00, io->in.buffer_code);
+	SSVAL(req->out.body, 0x02, io->in.flags);
+	SIVAL(req->out.body, 0x04, io->in._pad);
 	SBVAL(req->out.body, 0x08, io->in.handle.data[0]);
 	SBVAL(req->out.body, 0x10, io->in.handle.data[1]);
 
@@ -60,8 +61,9 @@ NTSTATUS smb2_close_recv(struct smb2_request *req, struct smb2_close *io)
 		return NT_STATUS_BUFFER_TOO_SMALL;
 	}
 
-	io->out.unknown1 = IVAL(req->in.body, 0x00);
-	io->out.unknown2 = IVAL(req->in.body, 0x04);
+	io->out.buffer_code = SVAL(req->in.body, 0x00);
+	io->out.flags       = SVAL(req->in.body, 0x02);
+	io->out._pad        = IVAL(req->in.body, 0x04);
 	io->out.create_time = smbcli_pull_nttime(req->in.body, 0x08);
 	io->out.access_time = smbcli_pull_nttime(req->in.body, 0x10);
 	io->out.write_time  = smbcli_pull_nttime(req->in.body, 0x18);
diff --git a/source4/libcli/smb2/create.c b/source4/libcli/smb2/create.c
index f234e6cb35..e4b0773758 100644
--- a/source4/libcli/smb2/create.c
+++ b/source4/libcli/smb2/create.c
@@ -43,7 +43,8 @@ struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create
 	req = smb2_request_init_tree(tree, SMB2_OP_CREATE, 0x50 + path.length);
 	if (req == NULL) return NULL;
 
-	SIVAL(req->out.body, 0x00, io->in.unknown1);
+	SSVAL(req->out.body, 0x00, io->in.buffer_code);
+	SSVAL(req->out.body, 0x02, io->in.oplock_flags);
 	SIVAL(req->out.body, 0x04, io->in.unknown2);
 	SIVAL(req->out.body, 0x08, io->in.unknown3[0]);
 	SIVAL(req->out.body, 0x0C, io->in.unknown3[1]);
@@ -84,6 +85,9 @@ struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create
 */
 NTSTATUS smb2_create_recv(struct smb2_request *req, struct smb2_create *io)
 {
+	smb2_request_receive(req);
+	dump_data(0, req->in.body, req->in.body_size);
+
 	if (!smb2_request_receive(req) || 
 	    smb2_request_is_error(req)) {
 		return smb2_request_destroy(req);
@@ -93,16 +97,18 @@ NTSTATUS smb2_create_recv(struct smb2_request *req, struct smb2_create *io)
 		return NT_STATUS_BUFFER_TOO_SMALL;
 	}
 
-	io->out.unknown1 = IVAL(req->in.body, 0x00);
-	io->out.unknown2 = IVAL(req->in.body, 0x04);
-	io->out.create_time = smbcli_pull_nttime(req->in.body, 0x08);
-	io->out.access_time = smbcli_pull_nttime(req->in.body, 0x10);
-	io->out.write_time  = smbcli_pull_nttime(req->in.body, 0x18);
-	io->out.change_time = smbcli_pull_nttime(req->in.body, 0x20);
-	io->out.alloc_size  = BVAL(req->in.body, 0x28);
-	io->out.size        = BVAL(req->in.body, 0x30);
-	io->out.file_attr   = IVAL(req->in.body, 0x38);
-	io->out.unknown3    = IVAL(req->in.body, 0x3C);
+	SMB2_CHECK_BUFFER_CODE(req, 0x59);
+
+	io->out.oplock_flags   = SVAL(req->in.body, 0x02);
+	io->out.create_action  = IVAL(req->in.body, 0x04);
+	io->out.create_time    = smbcli_pull_nttime(req->in.body, 0x08);
+	io->out.access_time    = smbcli_pull_nttime(req->in.body, 0x10);
+	io->out.write_time     = smbcli_pull_nttime(req->in.body, 0x18);
+	io->out.change_time    = smbcli_pull_nttime(req->in.body, 0x20);
+	io->out.alloc_size     = BVAL(req->in.body, 0x28);
+	io->out.size           = BVAL(req->in.body, 0x30);
+	io->out.file_attr      = IVAL(req->in.body, 0x38);
+	io->out._pad           = IVAL(req->in.body, 0x3C);
 	io->out.handle.data[0] = BVAL(req->in.body, 0x40);
 	io->out.handle.data[1] = BVAL(req->in.body, 0x48);
 	io->out.unknown4 = IVAL(req->in.body, 0x50);
diff --git a/source4/libcli/smb2/negprot.c b/source4/libcli/smb2/negprot.c
index 5cd4810909..758b06fcae 100644
--- a/source4/libcli/smb2/negprot.c
+++ b/source4/libcli/smb2/negprot.c
@@ -62,7 +62,9 @@ NTSTATUS smb2_negprot_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx,
 		return NT_STATUS_BUFFER_TOO_SMALL;
 	}
 
-	io->out.unknown1     = IVAL(req->in.body, 0x00);
+	SMB2_CHECK_BUFFER_CODE(req, 0x41);
+
+	io->out._pad         = SVAL(req->in.body, 0x02);
 	io->out.unknown2     = IVAL(req->in.body, 0x04);
 	memcpy(io->out.sessid, req->in.body + 0x08, 16);
 	io->out.unknown3     = IVAL(req->in.body, 0x18);
diff --git a/source4/libcli/smb2/session.c b/source4/libcli/smb2/session.c
index 031360fcb9..9d945243d2 100644
--- a/source4/libcli/smb2/session.c
+++ b/source4/libcli/smb2/session.c
@@ -103,7 +103,9 @@ NTSTATUS smb2_session_setup_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx,
 		return NT_STATUS_BUFFER_TOO_SMALL;
 	}
 
-	io->out.unknown1 = IVAL(req->in.body, 0x00);
+	SMB2_CHECK_BUFFER_CODE(req, 0x09);
+
+	io->out._pad     = SVAL(req->in.body, 0x02);
 	io->out.uid      = BVAL(req->in.hdr,  SMB2_HDR_UID);
 	
 	status = smb2_pull_ofs_blob(req, req->in.body+0x04, &io->out.secblob);
diff --git a/source4/libcli/smb2/smb2.h b/source4/libcli/smb2/smb2.h
index 76f00cc573..f6847bfc9b 100644
--- a/source4/libcli/smb2/smb2.h
+++ b/source4/libcli/smb2/smb2.h
@@ -168,3 +168,14 @@ struct smb2_request {
 
 #define SMB2_MAGIC 0x424D53FE /* 0xFE 'S' 'M' 'B' */
 
+/*
+  check that a buffer code matches the expected value
+*/
+#define SMB2_CHECK_BUFFER_CODE(req, code) do { \
+	io->out.buffer_code = SVAL(req->in.body, 0); \
+	if (io->out.buffer_code != (code)) { \
+		DEBUG(0,("Unexpected buffer code 0x%x. Expected 0x%x\n", \
+			 io->out.buffer_code, code)); \
+		return NT_STATUS_INVALID_PARAMETER; \
+	} \
+} while (0)
diff --git a/source4/libcli/smb2/smb2_calls.h b/source4/libcli/smb2/smb2_calls.h
index f3d158dadd..859655355d 100644
--- a/source4/libcli/smb2/smb2_calls.h
+++ b/source4/libcli/smb2/smb2_calls.h
@@ -28,7 +28,8 @@ struct smb2_negprot {
 		uint8_t  unknown3[32]; /* all zero */
 	} in;
 	struct {
-		uint32_t unknown1; /* 0x41 */
+		uint16_t buffer_code;
+		uint16_t _pad;
 		uint32_t unknown2; /* 0x06 */
 		uint8_t  sessid[16];
 		uint32_t unknown3; /* 0x0d */
@@ -54,7 +55,8 @@ struct smb2_session_setup {
 		DATA_BLOB secblob;
 	} in;
 	struct {
-		uint32_t unknown1; /* 0x09 */
+		uint16_t buffer_code;
+		uint16_t _pad;
 		/* uint16_t secblob ofs/size here */
 		DATA_BLOB secblob;
 		uint64_t uid; /* returned in header */
@@ -67,7 +69,8 @@ struct smb2_tree_connect {
 		const char *path;
 	} in;
 	struct {
-		uint32_t unknown1; /* 0x00020010 */
+		uint16_t buffer_code;
+		uint16_t unknown1; /* 0x02 */
 		uint32_t unknown2; /* 0x00 */
 		uint32_t unknown3; /* 0x00 */
 		uint32_t access_mask;
@@ -82,10 +85,17 @@ struct smb2_handle {
 	uint64_t data[2];
 };
 
+
+#define SMB2_CREATE_FLAG_REQUEST_OPLOCK           0x0100
+#define SMB2_CREATE_FLAG_REQUEST_EXCLUSIVE_OPLOCK 0x0800
+#define SMB2_CREATE_FLAG_GRANT_OPLOCK             0x0001
+#define SMB2_CREATE_FLAG_GRANT_EXCLUSIVE_OPLOCK   0x0080
+
 struct smb2_create {
 	struct {
-		uint32_t unknown1; /* 0x09000039 */
-		uint32_t unknown2; /* 2 */
+		uint16_t buffer_code; /* 0x39 */
+		uint16_t oplock_flags; /* SMB2_CREATE_FLAG_* */
+		uint32_t unknown2;
 		uint32_t unknown3[4];
 		uint32_t access_mask;
 		uint32_t file_attr;
@@ -103,8 +113,9 @@ struct smb2_create {
 	} in;
 
 	struct {
-		uint32_t unknown1;
-		uint32_t unknown2;
+		uint16_t buffer_code; /* 0x59 */
+		uint16_t oplock_flags; /* SMB2_CREATE_FLAG_* */
+		uint32_t create_action;
 		NTTIME   create_time;
 		NTTIME   access_time;
 		NTTIME   write_time;
@@ -112,23 +123,28 @@ struct smb2_create {
 		uint64_t alloc_size;
 		uint64_t size;
 		uint32_t file_attr;
-		uint32_t unknown3;
+		uint32_t _pad;
 		struct smb2_handle handle;
 		uint32_t unknown4;
+		uint32_t unknown5;
 	} out;
 };
 
 
+#define SMB2_CLOSE_FLAGS_FULL_INFORMATION (1<<0)
+
 struct smb2_close {
 	struct {
-		uint32_t unknown1;
-		uint32_t unknown2;
+		uint16_t buffer_code;
+		uint16_t flags; /* SMB2_CLOSE_FLAGS_* */
+		uint32_t _pad;
 		struct smb2_handle handle;
 	} in;
 
 	struct {
-		uint32_t unknown1;
-		uint32_t unknown2;
+		uint16_t buffer_code;
+		uint16_t flags;
+		uint32_t _pad;
 		NTTIME   create_time;
 		NTTIME   access_time;
 		NTTIME   write_time;
diff --git a/source4/libcli/smb2/tcon.c b/source4/libcli/smb2/tcon.c
index 88a2d0a67d..f68987acf7 100644
--- a/source4/libcli/smb2/tcon.c
+++ b/source4/libcli/smb2/tcon.c
@@ -93,9 +93,11 @@ NTSTATUS smb2_tree_connect_recv(struct smb2_request *req, struct smb2_tree_conne
 		return NT_STATUS_BUFFER_TOO_SMALL;
 	}
 
+	SMB2_CHECK_BUFFER_CODE(req, 0x10);
+
 	io->out.tid      = IVAL(req->in.hdr,  SMB2_HDR_TID);
 
-	io->out.unknown1    = IVAL(req->in.body, 0x00);
+	io->out.unknown1    = SVAL(req->in.body, 0x02);
 	io->out.unknown2    = IVAL(req->in.body, 0x04);
 	io->out.unknown3    = IVAL(req->in.body, 0x08);
 	io->out.access_mask = IVAL(req->in.body, 0x0C);