1 files changed, 354 insertions, 0 deletions

diff --git a/source4/utils/net_rpc_join.c b/source4/utils/net_rpc_join.c
new file mode 100644
index 0000000000..4f82d0b800
--- /dev/null
+++ b/source4/utils/net_rpc_join.c
@@ -0,0 +1,354 @@
+/* 
+   Samba Unix/Linux SMB client library 
+   Distributed SMB/CIFS Server Management Utility 
+   Copyright (C) 2001 Andrew Bartlett (abartlet@samba.org)
+   Copyright (C) Tim Potter     2001
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+ 
+#include "includes.h"
+#include "../utils/net.h"
+
+/* Macro for checking RPC error codes to make things more readable */
+
+#define CHECK_RPC_ERR(rpc, msg) \
+        if (!NT_STATUS_IS_OK(result = rpc)) { \
+                DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
+                goto done; \
+        }
+
+#define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
+        if (!NT_STATUS_IS_OK(result = rpc)) { \
+                DEBUG(0, debug_args); \
+                goto done; \
+        }
+
+
+/**
+ * confirm that a domain join is still valid
+ *
+ * @return A shell status integer (0 for success)
+ *
+ **/
+int net_rpc_join_ok(const char *domain)
+{
+	struct cli_state *cli;
+	uchar stored_md4_trust_password[16];
+	int retval = 1;
+	uint32 channel;
+	NTSTATUS result;
+	uint32 neg_flags = 0x000001ff;
+
+	/* Connect to remote machine */
+	if (!(cli = net_make_ipc_connection(NET_FLAGS_ANONYMOUS | NET_FLAGS_PDC))) {
+		return 1;
+	}
+
+	if (!cli_nt_session_open(cli, PI_NETLOGON)) {
+		DEBUG(0,("Error connecting to NETLOGON pipe\n"));
+		goto done;
+	}
+
+	if (!secrets_fetch_trust_account_password(domain,
+						  stored_md4_trust_password, NULL)) {
+		DEBUG(0,("Could not reterive domain trust secret"));
+		goto done;
+	}
+	
+	if (lp_server_role() == ROLE_DOMAIN_BDC || 
+	    lp_server_role() == ROLE_DOMAIN_PDC) {
+		channel = SEC_CHAN_BDC;
+	} else {
+		channel = SEC_CHAN_WKSTA;
+	}
+
+	CHECK_RPC_ERR(cli_nt_setup_creds(cli, 
+					 channel,
+					 stored_md4_trust_password, &neg_flags, 2),
+			  "error in domain join verification");
+	
+	retval = 0;		/* Success! */
+	
+done:
+	/* Close down pipe - this will clean up open policy handles */
+	if (cli->nt_pipe_fnum)
+		cli_nt_session_close(cli);
+
+	cli_shutdown(cli);
+
+	return retval;
+}
+
+/**
+ * Join a domain using the administrator username and password
+ *
+ * @param argc  Standard main() style argc
+ * @param argc  Standard main() style argv.  Initial components are already
+ *              stripped.  Currently not used.
+ * @return A shell status integer (0 for success)
+ *
+ **/
+
+int net_rpc_join_newstyle(int argc, const char **argv) 
+{
+
+	/* libsmb variables */
+
+	struct cli_state *cli;
+	TALLOC_CTX *mem_ctx;
+        uint32 acb_info;
+
+	/* rpc variables */
+
+	POLICY_HND lsa_pol, sam_pol, domain_pol, user_pol;
+	DOM_SID domain_sid;
+	uint32 user_rid;
+
+	/* Password stuff */
+
+	char *clear_trust_password = NULL;
+	fstring ucs2_trust_password;
+	int ucs2_pw_len;
+	uchar pwbuf[516], sess_key[16];
+	SAM_USERINFO_CTR ctr;
+	SAM_USER_INFO_24 p24;
+	SAM_USER_INFO_10 p10;
+
+	/* Misc */
+
+	NTSTATUS result;
+	int retval = 1;
+	fstring domain;
+	uint32 num_rids, *name_types, *user_rids;
+	uint32 flags = 0x3e8;
+	char *acct_name;
+	const char *const_acct_name;
+
+	/* Connect to remote machine */
+
+	if (!(cli = net_make_ipc_connection(NET_FLAGS_PDC))) 
+		return 1;
+
+	if (!(mem_ctx = talloc_init("net_rpc_join_newstyle"))) {
+		DEBUG(0, ("Could not initialise talloc context\n"));
+		goto done;
+	}
+
+	/* Fetch domain sid */
+
+	if (!cli_nt_session_open(cli, PI_LSARPC)) {
+		DEBUG(0, ("Error connecting to SAM pipe\n"));
+		goto done;
+	}
+
+
+	CHECK_RPC_ERR(cli_lsa_open_policy(cli, mem_ctx, True,
+					  SEC_RIGHTS_MAXIMUM_ALLOWED,
+					  &lsa_pol),
+		      "error opening lsa policy handle");
+
+	CHECK_RPC_ERR(cli_lsa_query_info_policy(cli, mem_ctx, &lsa_pol,
+						5, domain, &domain_sid),
+		      "error querying info policy");
+
+	cli_lsa_close(cli, mem_ctx, &lsa_pol);
+
+	cli_nt_session_close(cli); /* Done with this pipe */
+
+	/* Create domain user */
+	if (!cli_nt_session_open(cli, PI_SAMR)) {
+		DEBUG(0, ("Error connecting to SAM pipe\n"));
+		goto done;
+	}
+
+	CHECK_RPC_ERR(cli_samr_connect(cli, mem_ctx, 
+				       SEC_RIGHTS_MAXIMUM_ALLOWED,
+				       &sam_pol),
+		      "could not connect to SAM database");
+
+	
+	CHECK_RPC_ERR(cli_samr_open_domain(cli, mem_ctx, &sam_pol,
+					   SEC_RIGHTS_MAXIMUM_ALLOWED,
+					   &domain_sid, &domain_pol),
+		      "could not open domain");
+
+	/* Create domain user */
+	acct_name = talloc_asprintf(mem_ctx, "%s$", lp_netbios_name()); 
+	strlower(acct_name);
+	const_acct_name = acct_name;
+
+        acb_info = ((lp_server_role() == ROLE_DOMAIN_BDC) || lp_server_role() == ROLE_DOMAIN_PDC) ? ACB_SVRTRUST : ACB_WSTRUST;
+
+	result = cli_samr_create_dom_user(cli, mem_ctx, &domain_pol,
+					  acct_name, acb_info,
+					  0xe005000b, &user_pol, 
+					  &user_rid);
+
+	if (!NT_STATUS_IS_OK(result) && 
+	    !NT_STATUS_EQUAL(result, NT_STATUS_USER_EXISTS)) {
+		d_printf("Create of workstation account failed\n");
+
+		/* If NT_STATUS_ACCESS_DENIED then we have a valid
+		   username/password combo but the user does not have
+		   administrator access. */
+
+		if (NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
+			d_printf("User specified does not have administrator privileges\n");
+
+		goto done;
+	}
+
+	/* We *must* do this.... don't ask... */
+
+	if (NT_STATUS_IS_OK(result))
+		cli_samr_close(cli, mem_ctx, &user_pol);
+
+	CHECK_RPC_ERR_DEBUG(cli_samr_lookup_names(cli, mem_ctx,
+						  &domain_pol, flags,
+						  1, &const_acct_name, 
+						  &num_rids,
+						  &user_rids, &name_types),
+			    ("error looking up rid for user %s: %s\n",
+			     acct_name, nt_errstr(result)));
+
+	if (name_types[0] != SID_NAME_USER) {
+		DEBUG(0, ("%s is not a user account\n", acct_name));
+		goto done;
+	}
+
+	user_rid = user_rids[0];
+		
+	/* Open handle on user */
+
+	CHECK_RPC_ERR_DEBUG(
+		cli_samr_open_user(cli, mem_ctx, &domain_pol,
+				   SEC_RIGHTS_MAXIMUM_ALLOWED,
+				   user_rid, &user_pol),
+		("could not re-open existing user %s: %s\n",
+		 acct_name, nt_errstr(result)));
+	
+	/* Create a random machine account password */
+
+	{ 
+		char *str;
+		str = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
+		clear_trust_password = strdup(str);
+	}
+
+	ucs2_pw_len = push_ucs2(NULL, ucs2_trust_password, 
+				clear_trust_password, 
+				sizeof(ucs2_trust_password), 0);
+		  
+	encode_pw_buffer((char *)pwbuf, ucs2_trust_password,
+			 ucs2_pw_len);
+
+	/* 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;
+
+	CHECK_RPC_ERR(cli_samr_set_userinfo(cli, mem_ctx, &user_pol, 24, 
+					    cli->user_session_key, &ctr),
+		      "error setting trust account password");
+
+	/* 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 = 0x10;
+	ctr.info.id10 = &p10;
+
+	init_sam_user_info10(&p10, acb_info);
+
+	/* Ignoring the return value is necessary for joining a domain
+	   as a normal user with "Add workstation to domain" privilege. */
+
+	result = cli_samr_set_userinfo2(cli, mem_ctx, &user_pol, 0x10, 
+					sess_key, &ctr);
+
+	/* Now store the secret in the secrets database */
+
+	strupper(domain);
+
+	if (!secrets_store_domain_sid(domain, &domain_sid)) {
+		DEBUG(0, ("error storing domain sid for %s\n", domain));
+		goto done;
+	}
+
+	if (!secrets_store_machine_password(clear_trust_password)) {
+		DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
+	}
+
+	/* Now check the whole process from top-to-bottom */
+	cli_samr_close(cli, mem_ctx, &user_pol);
+	cli_nt_session_close(cli); /* Done with this pipe */
+
+	retval = net_rpc_join_ok(domain);
+	
+done:
+	/* Close down pipe - this will clean up open policy handles */
+
+	if (cli->nt_pipe_fnum)
+		cli_nt_session_close(cli);
+
+	/* Display success or failure */
+
+	if (retval != 0) {
+		trust_password_delete(domain);
+		fprintf(stderr,"Unable to join domain %s.\n",domain);
+	} else {
+		printf("Joined domain %s.\n",domain);
+	}
+	
+	cli_shutdown(cli);
+
+	SAFE_FREE(clear_trust_password);
+
+	return retval;
+}
+
+
+/**
+ * check that a join is OK
+ *
+ * @return A shell status integer (0 for success)
+ *
+ **/
+int net_rpc_testjoin(int argc, const char **argv) 
+{
+	char *domain = smb_xstrdup(lp_workgroup());
+
+	/* Display success or failure */
+	if (net_rpc_join_ok(domain) != 0) {
+		fprintf(stderr,"Join to domain '%s' is not valid\n",domain);
+		free(domain);
+		return -1;
+	}
+
+	printf("Join to '%s' is OK\n",domain);
+	free(domain);
+	return 0;
+}