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From fbef6bd05629e3f5939317bd073a2281fcc3b636 Mon Sep 17 00:00:00 2001
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From: Andreas Schneider <asn@samba.org>
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Date: Tue, 30 May 2017 16:30:33 +0200
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Subject: [PATCH] libcli:smb2: Gracefully handle not supported for
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 FSCTL_VALIDATE_NEGOTIATE_INFO
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If FSCTL_VALIDATE_NEGOTIATE_INFO is not implemented, e.g. in a SMB2 only
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server then gracefully handle NT_STATUS_NOT_SUPPORTED too.
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BUG: https://bugzilla.samba.org/show_bug.cgi?id=12808
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Signed-off-by: Andreas Schneider <asn@samba.org>
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Signed-off-by: Guenther Deschner <gd@samba.org>
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Pair-Programmed-With: Guenther Deschner <gd@samba.org>
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Reviewed-by: Jeremy Allison <jra@samba.org>
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Autobuild-User(master): Volker Lendecke <vl@samba.org>
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Autobuild-Date(master): Thu Jun 15 17:32:45 CEST 2017 on sn-devel-144
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(cherry picked from commit a4d9438ecf92614a0915b9cf61f905ea8170043a)
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---
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 libcli/smb/smbXcli_base.c | 15 +++++++++++++++
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 1 file changed, 15 insertions(+)
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diff --git a/libcli/smb/smbXcli_base.c b/libcli/smb/smbXcli_base.c
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index a7b24f01497..593edf9ce78 100644
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--- a/libcli/smb/smbXcli_base.c
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+++ b/libcli/smb/smbXcli_base.c
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@@ -5321,6 +5321,21 @@ static void smb2cli_validate_negotiate_info_done(struct tevent_req *subreq)
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 		tevent_req_done(req);
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 		return;
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 	}
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+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
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+		/*
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+		 * The response was signed, but not supported
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+		 *
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+		 * This might be returned by older Windows versions or by
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+		 * NetApp SMB server implementations.
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+		 *
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+		 * See
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+		 *
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+		 * https://blogs.msdn.microsoft.com/openspecification/2012/06/28/smb3-secure-dialect-negotiation/
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+		 *
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+		 */
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+		tevent_req_done(req);
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+		return;
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+	}
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 	if (tevent_req_nterror(req, status)) {
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 		return;
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 	}
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-- 
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2.13.1.518.g3df882009-goog
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