From: Rafal Szczesniak <mimir@samba.org>
Date: Wed, 29 Aug 2007 11:02:04 +0000 (+0000)
Subject: r24771: Use infolevel 25 to set the machine account's password (just like winxp).
X-Git-Tag: release-3-0-28a~35
X-Git-Url: http://git.samba.org/samba.git/?p=tprouty%2Fsamba.git;a=commitdiff_plain;h=2ced9b906fe9044edf6efbca6175aa481c2a4451

r24771: Use infolevel 25 to set the machine account's password (just like winxp).
This correctly updates pwdLastSet field on win2k3 server.

rafal
---

diff --git a/source/rpc_parse/parse_samr.c b/source/rpc_parse/parse_samr.c
index 0d83e454ef..d452c1fe82 100644
--- a/source/rpc_parse/parse_samr.c
+++ b/source/rpc_parse/parse_samr.c
@@ -5870,6 +5870,25 @@ void init_sam_user_info23A(SAM_USER_INFO_23 * usr, NTTIME * logon_time,	/* all z
 	}
 }
 
+
+/*************************************************************************
+ init_samr_user_info25P
+ fields_present = ACCT_NT_PWD_SET | ACCT_LM_PWD_SET | ACCT_FLAGS
+*************************************************************************/
+
+void init_sam_user_info25P(SAM_USER_INFO_25 * usr,
+			   uint32 fields_present, uint32 acb_info,
+			   char newpass[532])
+{
+	usr->fields_present = fields_present;
+	ZERO_STRUCT(usr->padding1);
+	ZERO_STRUCT(usr->padding2);
+
+	usr->acb_info = acb_info;
+	memcpy(usr->pass, newpass, sizeof(usr->pass));
+}
+
+
 /*******************************************************************
 reads or writes a structure.
 ********************************************************************/
diff --git a/source/utils/net_domain.c b/source/utils/net_domain.c
index ac7e0dad73..533bb9c698 100644
--- a/source/utils/net_domain.c
+++ b/source/utils/net_domain.c
@@ -210,10 +210,14 @@ NTSTATUS netdom_join_domain( TALLOC_CTX *mem_ctx, struct cli_state *cli,
 	uint32 flags = 0x3e8;
 	uint32 acb_info = ACB_WSTRUST;
 	uint32 acct_flags=0;
-	uchar pwbuf[516];
+	uint32 fields_present;
+	uchar pwbuf[532];
 	SAM_USERINFO_CTR ctr;
-	SAM_USER_INFO_24 p24;
-	SAM_USER_INFO_16 p16;
+	SAM_USER_INFO_25 p25;
+	const int infolevel = 25;
+	struct MD5Context md5ctx;
+	uchar md5buffer[16];
+	DATA_BLOB digested_session_key;
 	uchar md4_trust_password[16];
 
 	/* Open the domain */
@@ -289,44 +293,25 @@ NTSTATUS netdom_join_domain( TALLOC_CTX *mem_ctx, struct cli_state *cli,
 
 	status = rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
 			SEC_RIGHTS_MAXIMUM_ALLOWED, user_rid, &user_pol);
-	
-	/* Create a random machine account password */
-
-	E_md4hash( clear_pw, md4_trust_password);
-	encode_pw_buffer(pwbuf, clear_pw, STR_UNICODE);
-
-	/* Set password on machine account */
-
-	ZERO_STRUCT(ctr);
-	ZERO_STRUCT(p24);
-
-	init_sam_user_info24(&p24, (char *)pwbuf,24);
-
-	ctr.switch_value = 24;
-	ctr.info.id24 = &p24;
-
-	status = rpccli_samr_set_userinfo(pipe_hnd, mem_ctx, &user_pol, 
-			24, &cli->user_session_key, &ctr);
-
-	if ( !NT_STATUS_IS_OK(status) ) {
-		d_fprintf( stderr, "Failed to set password for machine account (%s)\n", 
-			nt_errstr(status));
+	if (!NT_STATUS_IS_OK(status)) {
 		return status;
 	}
+	
+	/* Create a random machine account password and generate the hash */
 
-
-	/* Why do we have to try to (re-)set the ACB to be the same as what
-	   we passed in the samr_create_dom_user() call?  When a NT
-	   workstation is joined to a domain by an administrator the
-	   acb_info is set to 0x80.  For a normal user with "Add
-	   workstations to the domain" rights the acb_info is 0x84.  I'm
-	   not sure whether it is supposed to make a difference or not.  NT
-	   seems to cope with either value so don't bomb out if the set
-	   userinfo2 level 0x10 fails.  -tpot */
-
-	ZERO_STRUCT(ctr);
-	ctr.switch_value = 16;
-	ctr.info.id16 = &p16;
+	E_md4hash(clear_pw, md4_trust_password);
+	encode_pw_buffer(pwbuf, clear_pw, STR_UNICODE);
+	
+	generate_random_buffer((uint8*)md5buffer, sizeof(md5buffer));
+	digested_session_key = data_blob_talloc(mem_ctx, 0, 16);
+	
+	MD5Init(&md5ctx);
+	MD5Update(&md5ctx, md5buffer, sizeof(md5buffer));
+	MD5Update(&md5ctx, cli->user_session_key.data, cli->user_session_key.length);
+	MD5Final(digested_session_key.data, &md5ctx);
+	
+	SamOEMhashBlob(pwbuf, sizeof(pwbuf), &digested_session_key);
+	memcpy(&pwbuf[516], md5buffer, sizeof(md5buffer));
 
 	/* Fill in the additional account flags now */
 
@@ -338,10 +323,25 @@ NTSTATUS netdom_join_domain( TALLOC_CTX *mem_ctx, struct cli_state *cli,
 		;;
 	}
 
-	init_sam_user_info16(&p16, acb_info);
+	/* Set password and account flags on machine account */
 
-	status = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol, 16, 
-					&cli->user_session_key, &ctr);
+	ZERO_STRUCT(ctr);
+	ZERO_STRUCT(p25);
+
+	fields_present = ACCT_NT_PWD_SET | ACCT_LM_PWD_SET | ACCT_FLAGS;
+	init_sam_user_info25P(&p25, fields_present, acb_info, (char *)pwbuf);
+
+	ctr.switch_value = infolevel;
+	ctr.info.id25    = &p25;
+
+	status = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol,
+					   infolevel, &cli->user_session_key, &ctr);
+
+	if ( !NT_STATUS_IS_OK(status) ) {
+		d_fprintf( stderr, "Failed to set password for machine account (%s)\n", 
+			nt_errstr(status));
+		return status;
+	}
 
 	rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
 	cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */