summaryrefslogtreecommitdiff
path: root/source4/libnet/libnet_site.c
blob: 9bfca74a368544d7810d8c0ff09ad28b6c7072fe (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
/*
   Unix SMB/CIFS implementation.

   Copyright (C) Brad Henry	2005

   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 3 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, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "libnet/libnet.h"
#include "libcli/cldap/cldap.h"
#include <ldb.h>
#include <ldb_errors.h>
#include "libcli/resolve/resolve.h"
#include "param/param.h"
#include "lib/tsocket/tsocket.h"

/**
 * 1. Setup a CLDAP socket.
 * 2. Lookup the default Site-Name.
 */
NTSTATUS libnet_FindSite(TALLOC_CTX *ctx, struct libnet_context *lctx, struct libnet_JoinSite *r)
{
	NTSTATUS status;
	TALLOC_CTX *tmp_ctx;

	char *site_name_str;
	char *config_dn_str;
	char *server_dn_str;

	struct cldap_socket *cldap = NULL;
	struct cldap_netlogon search;
	int ret;
	struct tsocket_address *dest_address;

	tmp_ctx = talloc_named(ctx, 0, "libnet_FindSite temp context");
	if (!tmp_ctx) {
		r->out.error_string = NULL;
		return NT_STATUS_NO_MEMORY;
	}

	/* Resolve the site name. */
	ZERO_STRUCT(search);
	search.in.dest_address = NULL;
	search.in.dest_port = 0;
	search.in.acct_control = -1;
	search.in.version = NETLOGON_NT_VERSION_5 | NETLOGON_NT_VERSION_5EX;
	search.in.map_response = true;

	ret = tsocket_address_inet_from_strings(tmp_ctx, "ip",
						r->in.dest_address,
						r->in.cldap_port,
						&dest_address);
	if (ret != 0) {
		r->out.error_string = NULL;
		status = map_nt_error_from_unix(errno);
		return status;
	}

	/* we want to use non async calls, so we're not passing an event context */
	status = cldap_socket_init(tmp_ctx, NULL, NULL, dest_address, &cldap);
	if (!NT_STATUS_IS_OK(status)) {
		talloc_free(tmp_ctx);
		r->out.error_string = NULL;
		return status;
	}
	status = cldap_netlogon(cldap, tmp_ctx, &search);
	if (!NT_STATUS_IS_OK(status)
	    || !search.out.netlogon.data.nt5_ex.client_site) {
		/*
		  If cldap_netlogon() returns in error,
		  default to using Default-First-Site-Name.
		*/
		site_name_str = talloc_asprintf(tmp_ctx, "%s",
						"Default-First-Site-Name");
		if (!site_name_str) {
			r->out.error_string = NULL;
			talloc_free(tmp_ctx);
			return NT_STATUS_NO_MEMORY;
		}
	} else {
		site_name_str = talloc_asprintf(tmp_ctx, "%s",
					search.out.netlogon.data.nt5_ex.client_site);
		if (!site_name_str) {
			r->out.error_string = NULL;
			talloc_free(tmp_ctx);
			return NT_STATUS_NO_MEMORY;
		}
	}

	/* Generate the CN=Configuration,... DN. */
/* TODO: look it up! */
	config_dn_str = talloc_asprintf(tmp_ctx, "CN=Configuration,%s", r->in.domain_dn_str);
	if (!config_dn_str) {
		r->out.error_string = NULL;
		talloc_free(tmp_ctx);
		return NT_STATUS_NO_MEMORY;
	}

	/* Generate the CN=Servers,... DN. */
	server_dn_str = talloc_asprintf(tmp_ctx, "CN=%s,CN=Servers,CN=%s,CN=Sites,%s",
						 r->in.netbios_name, site_name_str, config_dn_str);
	if (!server_dn_str) {
		r->out.error_string = NULL;
		talloc_free(tmp_ctx);
		return NT_STATUS_NO_MEMORY;
	}

	r->out.site_name_str = site_name_str;
	talloc_steal(r, site_name_str);

	r->out.config_dn_str = config_dn_str;
	talloc_steal(r, config_dn_str);

	r->out.server_dn_str = server_dn_str;
	talloc_steal(r, server_dn_str);

	talloc_free(tmp_ctx);
	return NT_STATUS_OK;
}

/*
 * find out Site specific stuff:
 * 1. Lookup the Site name.
 * 2. Add entry CN=<netbios name>,CN=Servers,CN=<site name>,CN=Sites,CN=Configuration,<domain dn>.
 * TODO: 3.) use DsAddEntry() to create CN=NTDS Settings,CN=<netbios name>,CN=Servers,CN=<site name>,...
 */
NTSTATUS libnet_JoinSite(struct libnet_context *ctx, 
			 struct ldb_context *remote_ldb,
			 struct libnet_JoinDomain *libnet_r)
{
	NTSTATUS status;
	TALLOC_CTX *tmp_ctx;

	struct libnet_JoinSite *r;

	struct ldb_dn *server_dn;
	struct ldb_message *msg;
	int rtn;

	const char *server_dn_str;
	const char *config_dn_str;
	struct nbt_name name;
	const char *dest_addr = NULL;

	tmp_ctx = talloc_named(libnet_r, 0, "libnet_JoinSite temp context");
	if (!tmp_ctx) {
		libnet_r->out.error_string = NULL;
		return NT_STATUS_NO_MEMORY;
	}

	r = talloc(tmp_ctx, struct libnet_JoinSite);
	if (!r) {
		libnet_r->out.error_string = NULL;
		talloc_free(tmp_ctx);
		return NT_STATUS_NO_MEMORY;
	}

	make_nbt_name_client(&name, libnet_r->out.samr_binding->host);
	status = resolve_name(lpcfg_resolve_context(ctx->lp_ctx), &name, r, &dest_addr, ctx->event_ctx);
	if (!NT_STATUS_IS_OK(status)) {
		libnet_r->out.error_string = NULL;
		talloc_free(tmp_ctx);
		return status;
	}

	/* Resolve the site name and AD DN's. */
	r->in.dest_address = dest_addr;
	r->in.netbios_name = libnet_r->in.netbios_name;
	r->in.domain_dn_str = libnet_r->out.domain_dn_str;
	r->in.cldap_port = lpcfg_cldap_port(ctx->lp_ctx);

	status = libnet_FindSite(tmp_ctx, ctx, r);
	if (!NT_STATUS_IS_OK(status)) {
		libnet_r->out.error_string =
			talloc_steal(libnet_r, r->out.error_string);
		talloc_free(tmp_ctx);
		return status;
	}

	config_dn_str = r->out.config_dn_str;
	server_dn_str = r->out.server_dn_str;

	/*
	 Add entry CN=<netbios name>,CN=Servers,CN=<site name>,CN=Sites,CN=Configuration,<domain dn>.
	*/
	msg = ldb_msg_new(tmp_ctx);
	if (!msg) {
		libnet_r->out.error_string = NULL;
		talloc_free(tmp_ctx);
		return NT_STATUS_NO_MEMORY;
	}

	rtn = ldb_msg_add_string(msg, "objectClass", "server");
	if (rtn != LDB_SUCCESS) {
		libnet_r->out.error_string = NULL;
		talloc_free(tmp_ctx);
		return NT_STATUS_NO_MEMORY;
	}
	rtn = ldb_msg_add_string(msg, "systemFlags", "50000000");
	if (rtn != LDB_SUCCESS) {
		libnet_r->out.error_string = NULL;
		talloc_free(tmp_ctx);
		return NT_STATUS_NO_MEMORY;
	}
	rtn = ldb_msg_add_string(msg, "serverReference", libnet_r->out.account_dn_str);
	if (rtn != LDB_SUCCESS) {
		libnet_r->out.error_string = NULL;
		talloc_free(tmp_ctx);
		return NT_STATUS_NO_MEMORY;
	}

	server_dn = ldb_dn_new(tmp_ctx, remote_ldb, server_dn_str);
	if ( ! ldb_dn_validate(server_dn)) {
		libnet_r->out.error_string = talloc_asprintf(libnet_r,
					"Invalid server dn: %s",
					server_dn_str);
		talloc_free(tmp_ctx);
		return NT_STATUS_UNSUCCESSFUL;
	}

	msg->dn = server_dn;

	rtn = ldb_add(remote_ldb, msg);
	if (rtn == LDB_ERR_ENTRY_ALREADY_EXISTS) {
		unsigned int i;

		/* make a 'modify' msg, and only for serverReference */
		msg = ldb_msg_new(tmp_ctx);
		if (!msg) {
			libnet_r->out.error_string = NULL;
			talloc_free(tmp_ctx);
			return NT_STATUS_NO_MEMORY;
		}
		msg->dn = server_dn;

		rtn = ldb_msg_add_string(msg, "serverReference",libnet_r->out.account_dn_str);
		if (rtn != LDB_SUCCESS) {
			libnet_r->out.error_string = NULL;
			talloc_free(tmp_ctx);
			return NT_STATUS_NO_MEMORY;
		}

		/* mark all the message elements (should be just one)
		   as LDB_FLAG_MOD_REPLACE */
		for (i=0;i<msg->num_elements;i++) {
			msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
		}

		rtn = ldb_modify(remote_ldb, msg);
		if (rtn != LDB_SUCCESS) {
			libnet_r->out.error_string
				= talloc_asprintf(libnet_r,
						  "Failed to modify server entry %s: %s: %d",
						  server_dn_str,
						  ldb_errstring(remote_ldb), rtn);
			talloc_free(tmp_ctx);
			return NT_STATUS_INTERNAL_DB_CORRUPTION;
		}
	} else if (rtn != LDB_SUCCESS) {
		libnet_r->out.error_string
			= talloc_asprintf(libnet_r,
				"Failed to add server entry %s: %s: %d",
				server_dn_str, ldb_errstring(remote_ldb),
				rtn);
		talloc_free(tmp_ctx);
		return NT_STATUS_INTERNAL_DB_CORRUPTION;
	}
	DEBUG(0, ("We still need to perform a DsAddEntry() so that we can create the CN=NTDS Settings container.\n"));

	/* Store the server DN in libnet_r */
	libnet_r->out.server_dn_str = server_dn_str;
	talloc_steal(libnet_r, server_dn_str);

	talloc_free(tmp_ctx);
	return NT_STATUS_OK;
}