source: branches/samba-3.5.x/source4/nbt_server/dgram/netlogon.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 6.2 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 NBT datagram netlogon server
5
6 Copyright (C) Andrew Tridgell 2005
7 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
21*/
22
23#include "includes.h"
24#include "nbt_server/nbt_server.h"
25#include "lib/socket/socket.h"
26#include "lib/ldb/include/ldb.h"
27#include "dsdb/samdb/samdb.h"
28#include "auth/auth.h"
29#include "../lib/util/util_ldb.h"
30#include "param/param.h"
31#include "smbd/service_task.h"
32#include "cldap_server/cldap_server.h"
33#include "libcli/security/security.h"
34#include "nbt_server/dgram/proto.h"
35
36/*
37 reply to a GETDC request
38 */
39static void nbtd_netlogon_getdc(struct dgram_mailslot_handler *dgmslot,
40 struct nbtd_interface *iface,
41 struct nbt_dgram_packet *packet,
42 const struct socket_address *src,
43 struct nbt_netlogon_packet *netlogon)
44{
45 struct nbt_name *name = &packet->data.msg.dest_name;
46 struct nbtd_interface *reply_iface = nbtd_find_reply_iface(iface, src->addr, false);
47 struct nbt_netlogon_response_from_pdc *pdc;
48 struct ldb_context *samctx;
49 struct nbt_netlogon_response netlogon_response;
50
51 /* only answer getdc requests on the PDC or LOGON names */
52 if (name->type != NBT_NAME_PDC && name->type != NBT_NAME_LOGON) {
53 return;
54 }
55
56 samctx = iface->nbtsrv->sam_ctx;
57
58 if (lp_server_role(iface->nbtsrv->task->lp_ctx) != ROLE_DOMAIN_CONTROLLER
59 || !samdb_is_pdc(samctx)) {
60 DEBUG(2, ("Not a PDC, so not processing LOGON_PRIMARY_QUERY\n"));
61 return;
62 }
63
64 if (strcasecmp_m(name->name, lp_workgroup(iface->nbtsrv->task->lp_ctx)) != 0) {
65 DEBUG(5,("GetDC requested for a domian %s that we don't host\n", name->name));
66 return;
67 }
68
69 /* setup a GETDC reply */
70 ZERO_STRUCT(netlogon_response);
71 netlogon_response.response_type = NETLOGON_GET_PDC;
72 pdc = &netlogon_response.data.get_pdc;
73
74 pdc->command = NETLOGON_RESPONSE_FROM_PDC;
75 pdc->pdc_name = lp_netbios_name(iface->nbtsrv->task->lp_ctx);
76 pdc->unicode_pdc_name = pdc->pdc_name;
77 pdc->domain_name = lp_workgroup(iface->nbtsrv->task->lp_ctx);
78 pdc->nt_version = 1;
79 pdc->lmnt_token = 0xFFFF;
80 pdc->lm20_token = 0xFFFF;
81
82 dgram_mailslot_netlogon_reply(reply_iface->dgmsock,
83 packet,
84 lp_netbios_name(iface->nbtsrv->task->lp_ctx),
85 netlogon->req.pdc.mailslot_name,
86 &netlogon_response);
87}
88
89
90/*
91 reply to a ADS style GETDC request
92 */
93static void nbtd_netlogon_samlogon(struct dgram_mailslot_handler *dgmslot,
94 struct nbtd_interface *iface,
95 struct nbt_dgram_packet *packet,
96 const struct socket_address *src,
97 struct nbt_netlogon_packet *netlogon)
98{
99 struct nbt_name *name = &packet->data.msg.dest_name;
100 struct nbtd_interface *reply_iface = nbtd_find_reply_iface(iface, src->addr, false);
101 struct ldb_context *samctx;
102 const char *my_ip = reply_iface->ip_address;
103 struct dom_sid *sid;
104 struct nbt_netlogon_response netlogon_response;
105 NTSTATUS status;
106
107 if (!my_ip) {
108 DEBUG(0, ("Could not obtain own IP address for datagram socket\n"));
109 return;
110 }
111
112 /* only answer getdc requests on the PDC or LOGON names */
113 if (name->type != NBT_NAME_PDC && name->type != NBT_NAME_LOGON) {
114 return;
115 }
116
117 samctx = iface->nbtsrv->sam_ctx;
118
119 if (netlogon->req.logon.sid_size) {
120 sid = &netlogon->req.logon.sid;
121 } else {
122 sid = NULL;
123 }
124
125 status = fill_netlogon_samlogon_response(samctx, packet, NULL, name->name, sid, NULL,
126 netlogon->req.logon.user_name, netlogon->req.logon.acct_control, src->addr,
127 netlogon->req.logon.nt_version, iface->nbtsrv->task->lp_ctx, &netlogon_response.data.samlogon);
128 if (!NT_STATUS_IS_OK(status)) {
129 DEBUG(2,("NBT netlogon query failed domain=%s sid=%s version=%d - %s\n",
130 name->name, dom_sid_string(packet, sid), netlogon->req.logon.nt_version, nt_errstr(status)));
131 return;
132 }
133
134 netlogon_response.response_type = NETLOGON_SAMLOGON;
135
136 packet->data.msg.dest_name.type = 0;
137
138 dgram_mailslot_netlogon_reply(reply_iface->dgmsock,
139 packet,
140 lp_netbios_name(iface->nbtsrv->task->lp_ctx),
141 netlogon->req.logon.mailslot_name,
142 &netlogon_response);
143}
144
145
146/*
147 handle incoming netlogon mailslot requests
148*/
149void nbtd_mailslot_netlogon_handler(struct dgram_mailslot_handler *dgmslot,
150 struct nbt_dgram_packet *packet,
151 struct socket_address *src)
152{
153 NTSTATUS status = NT_STATUS_NO_MEMORY;
154 struct nbtd_interface *iface =
155 talloc_get_type(dgmslot->private_data, struct nbtd_interface);
156 struct nbt_netlogon_packet *netlogon =
157 talloc(dgmslot, struct nbt_netlogon_packet);
158 struct nbtd_iface_name *iname;
159 struct nbt_name *name = &packet->data.msg.dest_name;
160
161 if (netlogon == NULL) goto failed;
162
163 /*
164 see if the we are listening on the destination netbios name
165 */
166 iname = nbtd_find_iname(iface, name, 0);
167 if (iname == NULL) {
168 status = NT_STATUS_BAD_NETWORK_NAME;
169 goto failed;
170 }
171
172 DEBUG(2,("netlogon request to %s from %s:%d\n",
173 nbt_name_string(netlogon, name), src->addr, src->port));
174 status = dgram_mailslot_netlogon_parse_request(dgmslot, netlogon, packet, netlogon);
175 if (!NT_STATUS_IS_OK(status)) goto failed;
176
177 switch (netlogon->command) {
178 case LOGON_PRIMARY_QUERY:
179 nbtd_netlogon_getdc(dgmslot, iface, packet,
180 src, netlogon);
181 break;
182 case LOGON_SAM_LOGON_REQUEST:
183 nbtd_netlogon_samlogon(dgmslot, iface, packet,
184 src, netlogon);
185 break;
186 default:
187 DEBUG(2,("unknown netlogon op %d from %s:%d\n",
188 netlogon->command, src->addr, src->port));
189 NDR_PRINT_DEBUG(nbt_netlogon_packet, netlogon);
190 break;
191 }
192
193 talloc_free(netlogon);
194 return;
195
196failed:
197 DEBUG(2,("nbtd netlogon handler failed from %s:%d to %s - %s\n",
198 src->addr, src->port, nbt_name_string(netlogon, name),
199 nt_errstr(status)));
200 talloc_free(netlogon);
201}
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