From: Volker Lendecke <vl@samba.org>
Date: Tue, 21 May 2019 12:52:22 +0000 (+0200)
Subject: smbd: Enable "smbd:suicide mode" for smb2
X-Git-Url: http://git.samba.org/?a=commitdiff_plain;h=ebf95e62bd03a7344b3a141c3e7102aac721f25a;p=metze%2Fsamba%2Fwip.git

smbd: Enable "smbd:suicide mode" for smb2

The next commit needs an smbd to just exit and leave data behind in the
locking.tdb file. Don't make it harder to eventually phase out SMB1: Do
the test in SMB2.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=13957
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
---

diff --git a/source3/smbd/smb2_server.c b/source3/smbd/smb2_server.c
index 5057cf68d7b2..7b6e82ba2f01 100644
--- a/source3/smbd/smb2_server.c
+++ b/source3/smbd/smb2_server.c
@@ -30,6 +30,7 @@
 #include "../librpc/gen_ndr/krb5pac.h"
 #include "lib/util/iov_buf.h"
 #include "auth.h"
+#include "libcli/smb/smbXcli_base.h"
 
 #include <gnutls/gnutls.h>
 #include <gnutls/crypto.h>
@@ -447,6 +448,17 @@ static NTSTATUS smbd_smb2_inbuf_parse_compound(struct smbXsrv_connection *xconn,
 		 */
 
 		if (len < SMB2_HDR_BODY + 2) {
+
+			if ((len == 5) &&
+			    (IVAL(hdr, 0) == SMB_SUICIDE_PACKET) &&
+			    lp_parm_bool(-1, "smbd", "suicide mode", false)) {
+				uint8_t exitcode = CVAL(hdr, 4);
+				DBG_WARNING("SUICIDE: Exiting immediately "
+					    "with code %"PRIu8"\n",
+					    exitcode);
+				exit(exitcode);
+			}
+
 			DEBUG(10, ("%d bytes left, expected at least %d\n",
 				   (int)len, SMB2_HDR_BODY));
 			goto inval;