s4:torture/smb2: make use of FSCTL_SMBTORTURE_FORCE_UNACKED_TIMEOUT

This is a way to test without being able to use iptables.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11897

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>

1 files changed, 131 insertions, 24 deletions

diff --git a/source4/torture/smb2/multichannel.c b/source4/torture/smb2/multichannel.c
index 7cf39dadbe3..3742cb8bac8 100644
--- a/source4/torture/smb2/multichannel.c
+++ b/source4/torture/smb2/multichannel.c
@@ -36,6 +36,7 @@
 #include "oplock_break_handler.h"
 #include "lease_break_handler.h"
 #include "torture/smb2/block.h"
+#include "lib/util/tevent_ntstatus.h"
 
 #define BASEDIR "multichanneltestdir"
 
@@ -367,28 +368,6 @@ static void test_multichannel_init_smb_create(struct smb2_create *io)
 }
 
 /*
- * We simulate blocking incoming oplock break requests by simply ignoring
- * the incoming break requests.
- */
-static bool test_set_ignore_break_handler(struct torture_context *tctx,
-					  struct smb2_transport *transport)
-{
-	transport->oplock.handler = torture_oplock_ignore_handler;
-	transport->lease.handler = torture_lease_ignore_handler;
-
-	return true;
-}
-
-static bool test_reset_break_handler(struct torture_context *tctx,
-				     struct smb2_transport *transport)
-{
-	transport->oplock.handler = torture_oplock_ack_handler;
-	transport->lease.handler = torture_lease_handler;
-
-	return true;
-}
-
-/*
  * Use iptables to block channels
  */
 static bool test_iptables_block_channel(struct torture_context *tctx,
@@ -421,6 +400,134 @@ static bool test_iptables_unblock_channel(struct torture_context *tctx,
 	return ret;
 }
 
+static bool torture_blocked_lease_handler(struct smb2_transport *transport,
+					  const struct smb2_lease_break *lb,
+					  void *private_data)
+{
+	struct smb2_transport *transport_copy =
+		talloc_get_type_abort(private_data,
+		struct smb2_transport);
+	bool lease_skip_ack = lease_break_info.lease_skip_ack;
+	bool ok;
+
+	lease_break_info.lease_skip_ack = true;
+	ok = transport_copy->lease.handler(transport,
+					   lb,
+					   transport_copy->lease.private_data);
+	lease_break_info.lease_skip_ack = lease_skip_ack;
+
+	if (!ok) {
+		return false;
+	}
+
+	if (lease_break_info.lease_skip_ack) {
+		return true;
+	}
+
+	if (lb->break_flags & SMB2_NOTIFY_BREAK_LEASE_FLAG_ACK_REQUIRED) {
+		lease_break_info.failures++;
+	}
+
+	return true;
+}
+
+static bool torture_blocked_oplock_handler(struct smb2_transport *transport,
+					   const struct smb2_handle *handle,
+					   uint8_t level,
+					   void *private_data)
+{
+	struct smb2_transport *transport_copy =
+		talloc_get_type_abort(private_data,
+		struct smb2_transport);
+	bool oplock_skip_ack = break_info.oplock_skip_ack;
+	bool ok;
+
+	break_info.oplock_skip_ack = true;
+	ok = transport_copy->oplock.handler(transport,
+					    handle,
+					    level,
+					    transport_copy->oplock.private_data);
+	break_info.oplock_skip_ack = oplock_skip_ack;
+
+	if (!ok) {
+		return false;
+	}
+
+	if (break_info.oplock_skip_ack) {
+		return true;
+	}
+
+	break_info.failures++;
+	break_info.failure_status = NT_STATUS_CONNECTION_DISCONNECTED;
+
+	return true;
+}
+
+static bool test_block_smb2_transport_fsctl_smbtorture(struct torture_context *tctx,
+						       struct smb2_transport *transport,
+						       const char *name)
+{
+	struct smb2_transport *transport_copy = NULL;
+	DATA_BLOB in_input_buffer = data_blob_null;
+	DATA_BLOB in_output_buffer = data_blob_null;
+	DATA_BLOB out_input_buffer = data_blob_null;
+	DATA_BLOB out_output_buffer = data_blob_null;
+	struct tevent_req *req = NULL;
+	uint16_t local_port;
+	NTSTATUS status;
+	bool ok;
+
+	transport_copy = talloc_zero(transport, struct smb2_transport);
+	torture_assert(tctx, transport_copy, "talloc transport_copy");
+	transport_copy->lease = transport->lease;
+	transport_copy->oplock = transport->oplock;
+
+	local_port = torture_get_local_port_from_transport(transport);
+	torture_comment(tctx, "transport[%s] uses tcp port: %d\n", name, local_port);
+	req = smb2cli_ioctl_send(tctx,
+				 tctx->ev,
+				 transport->conn,
+				 1000, /* timeout_msec */
+				 NULL, /* session */
+				 NULL, /* tcon */
+				 UINT64_MAX, /* in_fid_persistent */
+				 UINT64_MAX, /* in_fid_volatile */
+				 FSCTL_SMBTORTURE_FORCE_UNACKED_TIMEOUT,
+				 0, /* in_max_input_length */
+				 &in_input_buffer,
+				 0, /* in_max_output_length */
+				 &in_output_buffer,
+				 SMB2_IOCTL_FLAG_IS_FSCTL);
+	torture_assert(tctx, req != NULL, "smb2cli_ioctl_send() failed");
+	ok = tevent_req_poll_ntstatus(req, tctx->ev, &status);
+	if (ok) {
+		status = NT_STATUS_OK;
+	}
+	torture_assert_ntstatus_ok(tctx, status, "tevent_req_poll_ntstatus() failed");
+	status = smb2cli_ioctl_recv(req, tctx,
+				    &out_input_buffer,
+				    &out_output_buffer);
+	torture_assert_ntstatus_ok(tctx, status,
+		"FSCTL_SMBTORTURE_FORCE_UNACKED_TIMEOUT failed\n\n"
+		"On a Samba server 'smbd:FSCTL_SMBTORTURE = yes' is needed!\n\n"
+		"Otherwise you may need to use iptables like this:\n"
+		"--option='torture:use_iptables=yes'\n"
+		"And maybe something like this in addition:\n"
+		"--option='torture:iptables_command=sudo /sbin/iptables'\n\n");
+	TALLOC_FREE(req);
+
+	if (transport->lease.handler != NULL) {
+		transport->lease.handler = torture_blocked_lease_handler;
+		transport->lease.private_data = transport_copy;
+	}
+	if (transport->oplock.handler != NULL) {
+		transport->oplock.handler = torture_blocked_oplock_handler;
+		transport->oplock.private_data = transport_copy;
+	}
+
+	return true;
+}
+
 #define test_block_channel(_tctx, _t) _test_block_channel(_tctx, _t, #_t)
 static bool _test_block_channel(struct torture_context *tctx,
 					  struct smb2_transport *transport,
@@ -432,7 +539,7 @@ static bool _test_block_channel(struct torture_context *tctx,
 	if (use_iptables) {
 		return test_iptables_block_channel(tctx, transport, name);
 	} else {
-		return test_set_ignore_break_handler(tctx, transport);
+		return test_block_smb2_transport_fsctl_smbtorture(tctx, transport, name);
 	}
 }
 
@@ -447,7 +554,7 @@ static bool _test_unblock_channel(struct torture_context *tctx,
 	if (use_iptables) {
 		return test_iptables_unblock_channel(tctx, transport, name);
 	} else {
-		return test_reset_break_handler(tctx, transport);
+		return true;
 	}
 }