From 1038892f651cbc1a924cd7e74b393eb356dd5266 Mon Sep 17 00:00:00 2001
From: Justin Stephenson <jstephen@redhat.com>
Date: Wed, 27 Jun 2018 11:32:31 -0400
Subject: [PATCH] s3:libads: Add net ads leave keep-account option

Add the ability to leave the domain with --keep-account argument to avoid
removal of the host machine account.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13498

Signed-off-by: Justin Stephenson <jstephen@redhat.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
(cherry picked from commit d881f0c8a0ce2fc7cabf1966c5724e72c70d6694)
---
 docs-xml/manpages/net.8.xml  | 9 ++++++++-
 source3/libnet/libnet_join.c | 2 ++
 source3/utils/net.c          | 3 ++-
 source3/utils/net.h          | 1 +
 source3/utils/net_ads.c      | 9 +++++++--
 5 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/docs-xml/manpages/net.8.xml b/docs-xml/manpages/net.8.xml
index 3154ee5ff85..d2bcd24c502 100644
--- a/docs-xml/manpages/net.8.xml
+++ b/docs-xml/manpages/net.8.xml
@@ -377,6 +377,13 @@
 		</para></listitem>
 		</varlistentry>
 
+		<varlistentry>
+		<term>--keep-account</term>
+		<listitem><para>Prevent the machine account removal as
+		part of "net ads leave".
+		</para></listitem>
+		</varlistentry>
+
 		&stdarg.encrypt;
 		&popt.common.samba.client;
 
@@ -1276,7 +1283,7 @@ against an NT4 Domain Controller.
 </refsect2>
 
 <refsect2>
-<title>ADS LEAVE</title>
+<title>ADS LEAVE [--keep-account]</title>
 
 <para>Make the remote host leave the domain it is part of. </para>
 
diff --git a/source3/libnet/libnet_join.c b/source3/libnet/libnet_join.c
index a9405e8d288..27fc5135442 100644
--- a/source3/libnet/libnet_join.c
+++ b/source3/libnet/libnet_join.c
@@ -2868,6 +2868,8 @@ static WERROR libnet_DomainUnjoin(TALLOC_CTX *mem_ctx,
 			return ntstatus_to_werror(status);
 		}
 
+		r->out.dns_domain_name = talloc_strdup(mem_ctx,
+				                      r->in.domain_name);
 		r->out.disabled_machine_account = true;
 	}
 
diff --git a/source3/utils/net.c b/source3/utils/net.c
index 759d8cd442b..b3bd4b67118 100644
--- a/source3/utils/net.c
+++ b/source3/utils/net.c
@@ -970,8 +970,9 @@ static struct functable net_func[] = {
 		{"wipe", 0, POPT_ARG_NONE, &c->opt_wipe},
 		/* Options for 'net registry import' */
 		{"precheck", 0, POPT_ARG_STRING, &c->opt_precheck},
-		/* Options for 'net ads join' */
+		/* Options for 'net ads join or leave' */
 		{"no-dns-updates", 0, POPT_ARG_NONE, &c->opt_no_dns_updates},
+		{"keep-account", 0, POPT_ARG_NONE, &c->opt_keep_account},
 		POPT_COMMON_SAMBA
 		{ 0, 0, 0, 0}
 	};
diff --git a/source3/utils/net.h b/source3/utils/net.h
index d6dfeb6208f..5e70fd3aafa 100644
--- a/source3/utils/net.h
+++ b/source3/utils/net.h
@@ -85,6 +85,7 @@ struct net_context {
 	int opt_wipe;
 	const char *opt_precheck;
 	int opt_no_dns_updates;
+	int opt_keep_account;
 
 	int opt_have_ip;
 	struct sockaddr_storage opt_dest_ip;
diff --git a/source3/utils/net_ads.c b/source3/utils/net_ads.c
index ffa67d8f525..afe47dad839 100644
--- a/source3/utils/net_ads.c
+++ b/source3/utils/net_ads.c
@@ -964,7 +964,7 @@ static int net_ads_leave(struct net_context *c, int argc, const char **argv)
 
 	if (c->display_usage) {
 		d_printf(  "%s\n"
-			   "net ads leave\n"
+			   "net ads leave [--keep-account]\n"
 			   "    %s\n",
 			 _("Usage:"),
 			 _("Leave an AD domain"));
@@ -1009,7 +1009,12 @@ static int net_ads_leave(struct net_context *c, int argc, const char **argv)
 	   WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE really means "disable */
 	r->in.unjoin_flags	= WKSSVC_JOIN_FLAGS_JOIN_TYPE |
 				  WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE;
-	r->in.delete_machine_account = true;
+	if (c->opt_keep_account) {
+		r->in.delete_machine_account = false;
+	} else {
+		r->in.delete_machine_account = true;
+	}
+
 	r->in.msg_ctx		= c->msg_ctx;
 
 	werr = libnet_Unjoin(ctx, r);
-- 
2.17.1