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_send_mailslot(struct messaging_context *msg_ctx,
31 bool unique, const char *mailslot,
34 const char *srcname, int src_type,
35 const char *dstname, int dest_type,
36 const struct sockaddr_storage *dest_ss,
39 struct packet_struct p;
40 struct dgram_packet *dgram = &p.packet.dgram;
44 char addr[INET6_ADDRSTRLEN];
46 if ((nmbd_pid = pidfile_pid("nmbd")) == 0) {
47 DEBUG(3, ("No nmbd found\n"));
51 if (dest_ss->ss_family != AF_INET) {
52 DEBUG(3, ("cli_send_mailslot: can't send to IPv6 address.\n"));
56 memset((char *)&p, '\0', sizeof(p));
59 * Next, build the DGRAM ...
62 /* DIRECT GROUP or UNIQUE datagram. */
63 dgram->header.msg_type = unique ? 0x10 : 0x11;
64 dgram->header.flags.node_type = M_NODE;
65 dgram->header.flags.first = True;
66 dgram->header.flags.more = False;
67 dgram->header.dgm_id = dgm_id;
68 /* source ip is filled by nmbd */
69 dgram->header.dgm_length = 0; /* Let build_dgram() handle this. */
70 dgram->header.packet_offset = 0;
72 make_nmb_name(&dgram->source_name,srcname,src_type);
73 make_nmb_name(&dgram->dest_name,dstname,dest_type);
75 ptr = &dgram->data[0];
77 /* Setup the smb part. */
78 ptr -= 4; /* XXX Ugliness because of handling of tcp SMB length. */
81 if (smb_size + 17*2 + strlen(mailslot) + 1 + len > MAX_DGRAM_SIZE) {
82 DEBUG(0, ("cli_send_mailslot: Cannot write beyond end of packet\n"));
86 cli_set_message(ptr,17,strlen(mailslot) + 1 + len,True);
89 SCVAL(ptr,smb_com,SMBtrans);
90 SSVAL(ptr,smb_vwv1,len);
91 SSVAL(ptr,smb_vwv11,len);
92 SSVAL(ptr,smb_vwv12,70 + strlen(mailslot));
93 SSVAL(ptr,smb_vwv13,3);
94 SSVAL(ptr,smb_vwv14,1);
95 SSVAL(ptr,smb_vwv15,priority);
96 SSVAL(ptr,smb_vwv16,2);
99 p2 = skip_string(ptr,MAX_DGRAM_SIZE,p2);
107 dgram->datasize = PTR_DIFF(p2,ptr+4); /* +4 for tcp length. */
109 p.packet_type = DGRAM_PACKET;
110 p.ip = ((const struct sockaddr_in *)dest_ss)->sin_addr;
111 p.timestamp = time(NULL);
113 DEBUG(4,("send_mailslot: Sending to mailslot %s from %s ",
114 mailslot, nmb_namestr(&dgram->source_name)));
115 print_sockaddr(addr, sizeof(addr), dest_ss);
117 DEBUGADD(4,("to %s IP %s\n", nmb_namestr(&dgram->dest_name), addr));
119 return NT_STATUS_IS_OK(messaging_send_buf(msg_ctx,
120 pid_to_procid(nmbd_pid),
122 (uint8 *)&p, sizeof(p)));
125 static const char *mailslot_name(TALLOC_CTX *mem_ctx, struct in_addr dc_ip)
127 return talloc_asprintf(mem_ctx, "%s%X",
128 NBT_MAILSLOT_GETDC, dc_ip.s_addr);
131 bool send_getdc_request(TALLOC_CTX *mem_ctx,
132 struct messaging_context *msg_ctx,
133 struct sockaddr_storage *dc_ss,
134 const char *domain_name,
135 const struct dom_sid *sid,
139 struct in_addr dc_ip;
140 const char *my_acct_name = NULL;
141 const char *my_mailslot = NULL;
142 struct nbt_netlogon_packet packet;
143 struct NETLOGON_SAM_LOGON_REQUEST *s;
144 enum ndr_err_code ndr_err;
146 struct dom_sid my_sid;
151 if (dc_ss->ss_family != AF_INET) {
159 dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
160 my_mailslot = mailslot_name(mem_ctx, dc_ip);
165 my_acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname());
170 packet.command = LOGON_SAM_LOGON_REQUEST;
171 s = &packet.req.logon;
173 s->request_count = 0;
174 s->computer_name = global_myname();
175 s->user_name = my_acct_name;
176 s->mailslot_name = my_mailslot;
177 s->acct_control = ACB_WSTRUST;
179 s->nt_version = nt_version;
180 s->lmnt_token = 0xffff;
181 s->lm20_token = 0xffff;
183 if (DEBUGLEVEL >= 10) {
184 NDR_PRINT_DEBUG(nbt_netlogon_packet, &packet);
187 ndr_err = ndr_push_struct_blob(&blob, mem_ctx, &packet,
188 (ndr_push_flags_fn_t)ndr_push_nbt_netlogon_packet);
189 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
193 return cli_send_mailslot(msg_ctx,
194 false, NBT_MAILSLOT_NTLOGON, 0,
195 (char *)blob.data, blob.length,
196 global_myname(), 0, domain_name, 0x1c,
200 bool receive_getdc_response(TALLOC_CTX *mem_ctx,
201 struct sockaddr_storage *dc_ss,
202 const char *domain_name,
204 uint32_t *nt_version,
205 const char **dc_name,
206 struct netlogon_samlogon_response **samlogon_response)
208 struct packet_struct *packet;
209 const char *my_mailslot = NULL;
210 struct in_addr dc_ip;
212 struct netlogon_samlogon_response *r;
213 union dgram_message_body p;
214 enum ndr_err_code ndr_err;
217 const char *returned_dc = NULL;
218 const char *returned_domain = NULL;
220 if (dc_ss->ss_family != AF_INET) {
224 dc_ip = ((struct sockaddr_in *)dc_ss)->sin_addr;
226 my_mailslot = mailslot_name(mem_ctx, dc_ip);
231 packet = receive_unexpected(DGRAM_PACKET, dgm_id, my_mailslot);
233 if (packet == NULL) {
234 DEBUG(5, ("Did not receive packet for %s\n", my_mailslot));
238 DEBUG(5, ("Received packet for %s\n", my_mailslot));
240 blob = data_blob_const(packet->packet.dgram.data,
241 packet->packet.dgram.datasize);
243 if (blob.length < 4) {
244 DEBUG(0,("invalid length: %d\n", (int)blob.length));
248 if (RIVAL(blob.data,0) != DGRAM_SMB) {
249 DEBUG(0,("invalid packet\n"));
256 ndr_err = ndr_pull_union_blob_all(&blob, mem_ctx, &p, DGRAM_SMB,
257 (ndr_pull_flags_fn_t)ndr_pull_dgram_smb_packet);
258 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
259 DEBUG(0,("failed to parse packet\n"));
263 if (p.smb.smb_command != SMB_TRANSACTION) {
264 DEBUG(0,("invalid smb_command: %d\n", p.smb.smb_command));
268 if (DEBUGLEVEL >= 10) {
269 NDR_PRINT_DEBUG(dgram_smb_packet, &p);
272 blob = p.smb.body.trans.data;
274 r = TALLOC_ZERO_P(mem_ctx, struct netlogon_samlogon_response);
279 status = pull_netlogon_samlogon_response(&blob, mem_ctx, r);
280 if (!NT_STATUS_IS_OK(status)) {
285 map_netlogon_samlogon_response(r);
287 /* do we still need this ? */
288 *nt_version = r->ntver;
290 returned_domain = r->data.nt5_ex.domain_name;
291 returned_dc = r->data.nt5_ex.pdc_name;
293 if (!strequal(returned_domain, domain_name)) {
294 DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
295 domain_name, returned_domain));
300 *dc_name = talloc_strdup(mem_ctx, returned_dc);
306 if (**dc_name == '\\') *dc_name += 1;
307 if (**dc_name == '\\') *dc_name += 1;
309 if (samlogon_response) {
310 *samlogon_response = r;
315 DEBUG(10, ("GetDC gave name %s for domain %s\n",
316 *dc_name, returned_domain));