2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1994-1998
5 Copyright (C) Richard Sharpe 2001
6 Copyright (C) John Terpstra 2001
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "librpc/gen_ndr/messaging.h"
24 #include "libsmb/clidgram.h"
27 * cli_send_mailslot, send a mailslot for client code ...
30 static bool cli_prep_mailslot(bool unique
, const char *mailslot
,
33 const char *srcname
, int src_type
,
34 const char *dstname
, int dest_type
,
35 const struct sockaddr_storage
*dest_ss
,
37 struct packet_struct
*p
)
39 struct dgram_packet
*dgram
= &p
->packet
.dgram
;
42 char addr
[INET6_ADDRSTRLEN
];
47 * Next, build the DGRAM ...
50 /* DIRECT GROUP or UNIQUE datagram. */
51 dgram
->header
.msg_type
= unique
? 0x10 : 0x11;
52 dgram
->header
.flags
.node_type
= M_NODE
;
53 dgram
->header
.flags
.first
= True
;
54 dgram
->header
.flags
.more
= False
;
55 dgram
->header
.dgm_id
= dgm_id
;
56 /* source ip is filled by nmbd */
57 dgram
->header
.dgm_length
= 0; /* Let build_dgram() handle this. */
58 dgram
->header
.packet_offset
= 0;
60 make_nmb_name(&dgram
->source_name
,srcname
,src_type
);
61 make_nmb_name(&dgram
->dest_name
,dstname
,dest_type
);
63 ptr
= &dgram
->data
[0];
65 /* Setup the smb part. */
66 ptr
-= 4; /* XXX Ugliness because of handling of tcp SMB length. */
69 if (smb_size
+ 17*2 + strlen(mailslot
) + 1 + len
> MAX_DGRAM_SIZE
) {
70 DEBUG(0, ("cli_send_mailslot: Cannot write beyond end of packet\n"));
74 cli_set_message(ptr
,17,strlen(mailslot
) + 1 + len
,True
);
77 SCVAL(ptr
,smb_com
,SMBtrans
);
78 SSVAL(ptr
,smb_vwv1
,len
);
79 SSVAL(ptr
,smb_vwv11
,len
);
80 SSVAL(ptr
,smb_vwv12
,70 + strlen(mailslot
));
81 SSVAL(ptr
,smb_vwv13
,3);
82 SSVAL(ptr
,smb_vwv14
,1);
83 SSVAL(ptr
,smb_vwv15
,priority
);
84 SSVAL(ptr
,smb_vwv16
,2);
87 p2
= skip_string(ptr
,MAX_DGRAM_SIZE
,p2
);
95 dgram
->datasize
= PTR_DIFF(p2
,ptr
+4); /* +4 for tcp length. */
97 p
->packet_type
= DGRAM_PACKET
;
98 p
->ip
= ((const struct sockaddr_in
*)dest_ss
)->sin_addr
;
99 p
->timestamp
= time(NULL
);
101 DEBUG(4,("send_mailslot: Sending to mailslot %s from %s ",
102 mailslot
, nmb_namestr(&dgram
->source_name
)));
103 print_sockaddr(addr
, sizeof(addr
), dest_ss
);
105 DEBUGADD(4,("to %s IP %s\n", nmb_namestr(&dgram
->dest_name
), addr
));
110 static char *mailslot_name(TALLOC_CTX
*mem_ctx
, struct in_addr dc_ip
)
112 return talloc_asprintf(mem_ctx
, "%s%X",
113 NBT_MAILSLOT_GETDC
, dc_ip
.s_addr
);
116 static bool prep_getdc_request(const struct sockaddr_storage
*dc_ss
,
117 const char *domain_name
,
118 const struct dom_sid
*sid
,
120 const char *my_mailslot
,
122 struct packet_struct
*p
)
124 TALLOC_CTX
*frame
= talloc_stackframe();
125 const char *my_acct_name
;
126 struct nbt_netlogon_packet packet
;
127 struct NETLOGON_SAM_LOGON_REQUEST
*s
;
128 enum ndr_err_code ndr_err
;
129 DATA_BLOB blob
= data_blob_null
;
130 struct dom_sid my_sid
;
140 my_acct_name
= talloc_asprintf(talloc_tos(), "%s$", global_myname());
141 if (my_acct_name
== NULL
) {
145 packet
.command
= LOGON_SAM_LOGON_REQUEST
;
146 s
= &packet
.req
.logon
;
148 s
->request_count
= 0;
149 s
->computer_name
= global_myname();
150 s
->user_name
= my_acct_name
;
151 s
->mailslot_name
= my_mailslot
;
152 s
->acct_control
= ACB_WSTRUST
;
154 s
->nt_version
= nt_version
;
155 s
->lmnt_token
= 0xffff;
156 s
->lm20_token
= 0xffff;
158 if (DEBUGLEVEL
>= 10) {
159 NDR_PRINT_DEBUG(nbt_netlogon_packet
, &packet
);
162 ndr_err
= ndr_push_struct_blob(&blob
, talloc_tos(), &packet
,
163 (ndr_push_flags_fn_t
)ndr_push_nbt_netlogon_packet
);
164 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
168 ret
= cli_prep_mailslot(false, NBT_MAILSLOT_NTLOGON
, 0,
169 (char *)blob
.data
, blob
.length
,
170 global_myname(), 0, domain_name
, 0x1c,
177 bool send_getdc_request(struct messaging_context
*msg_ctx
,
178 const struct sockaddr_storage
*dc_ss
,
179 const char *domain_name
,
180 const struct dom_sid
*sid
,
184 struct packet_struct p
;
187 struct in_addr dc_ip
;
190 if ((nmbd_pid
= pidfile_pid("nmbd")) == 0) {
191 DEBUG(3, ("No nmbd found\n"));
195 if (dc_ss
->ss_family
!= AF_INET
) {
198 dc_ip
= ((struct sockaddr_in
*)dc_ss
)->sin_addr
;
200 my_mailslot
= mailslot_name(talloc_tos(), dc_ip
);
201 if (my_mailslot
== NULL
) {
205 if (!prep_getdc_request(dc_ss
, domain_name
, sid
, nt_version
,
206 my_mailslot
, dgm_id
, &p
)) {
207 TALLOC_FREE(my_mailslot
);
211 status
= messaging_send_buf(msg_ctx
, pid_to_procid(nmbd_pid
),
213 (uint8
*)&p
, sizeof(p
));
214 TALLOC_FREE(my_mailslot
);
216 return NT_STATUS_IS_OK(status
);
219 bool receive_getdc_response(TALLOC_CTX
*mem_ctx
,
220 const struct sockaddr_storage
*dc_ss
,
221 const char *domain_name
,
223 uint32_t *nt_version
,
224 const char **dc_name
,
225 struct netlogon_samlogon_response
**samlogon_response
)
227 struct packet_struct
*packet
= NULL
;
228 char *my_mailslot
= NULL
;
229 struct in_addr dc_ip
;
231 struct netlogon_samlogon_response
*r
= NULL
;
232 union dgram_message_body p
;
233 enum ndr_err_code ndr_err
;
236 const char *returned_dc
= NULL
;
237 const char *returned_domain
= NULL
;
239 if (dc_ss
->ss_family
!= AF_INET
) {
243 dc_ip
= ((struct sockaddr_in
*)dc_ss
)->sin_addr
;
245 my_mailslot
= mailslot_name(mem_ctx
, dc_ip
);
250 packet
= receive_unexpected(DGRAM_PACKET
, dgm_id
, my_mailslot
);
252 if (packet
== NULL
) {
253 DEBUG(5, ("Did not receive packet for %s\n", my_mailslot
));
257 DEBUG(5, ("Received packet for %s\n", my_mailslot
));
259 blob
= data_blob_const(packet
->packet
.dgram
.data
,
260 packet
->packet
.dgram
.datasize
);
262 if (blob
.length
< 4) {
263 DEBUG(0,("invalid length: %d\n", (int)blob
.length
));
267 if (RIVAL(blob
.data
,0) != DGRAM_SMB
) {
268 DEBUG(0,("invalid packet\n"));
275 ndr_err
= ndr_pull_union_blob_all(&blob
, mem_ctx
, &p
, DGRAM_SMB
,
276 (ndr_pull_flags_fn_t
)ndr_pull_dgram_smb_packet
);
277 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
278 DEBUG(0,("failed to parse packet\n"));
282 if (p
.smb
.smb_command
!= SMB_TRANSACTION
) {
283 DEBUG(0,("invalid smb_command: %d\n", p
.smb
.smb_command
));
287 if (DEBUGLEVEL
>= 10) {
288 NDR_PRINT_DEBUG(dgram_smb_packet
, &p
);
291 blob
= p
.smb
.body
.trans
.data
;
293 r
= TALLOC_ZERO_P(mem_ctx
, struct netlogon_samlogon_response
);
298 status
= pull_netlogon_samlogon_response(&blob
, mem_ctx
, r
);
299 if (!NT_STATUS_IS_OK(status
)) {
303 map_netlogon_samlogon_response(r
);
305 /* do we still need this ? */
306 *nt_version
= r
->ntver
;
308 returned_domain
= r
->data
.nt5_ex
.domain_name
;
309 returned_dc
= r
->data
.nt5_ex
.pdc_name
;
311 if (!strequal(returned_domain
, domain_name
)) {
312 DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
313 domain_name
, returned_domain
));
317 *dc_name
= talloc_strdup(mem_ctx
, returned_dc
);
322 if (**dc_name
== '\\') *dc_name
+= 1;
323 if (**dc_name
== '\\') *dc_name
+= 1;
325 if (samlogon_response
) {
326 *samlogon_response
= r
;
331 DEBUG(10, ("GetDC gave name %s for domain %s\n",
332 *dc_name
, returned_domain
));
335 TALLOC_FREE(my_mailslot
);
339 TALLOC_FREE(my_mailslot
);
341 if (packet
!= NULL
) {