2 Unix SMB/CIFS implementation.
3 SMB client session context management functions
4 Copyright (C) Andrew Tridgell 1994-1998
5 Copyright (C) James Myers 2003 <myersjj@samba.org>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #define SETUP_REQUEST_SESSION(cmd, wct, buflen) do { \
25 req = cli_request_setup_session(session, cmd, wct, buflen); \
26 if (!req) return NULL; \
29 /****************************************************************************
30 Initialize the session context
31 ****************************************************************************/
32 struct cli_session *cli_session_init(struct cli_transport *transport)
34 struct cli_session *session;
35 TALLOC_CTX *mem_ctx = talloc_init("cli_session");
36 if (mem_ctx == NULL) {
40 session = talloc_zero(mem_ctx, sizeof(*session));
42 talloc_destroy(mem_ctx);
46 session->mem_ctx = mem_ctx;
47 session->transport = transport;
48 session->pid = (uint16)getpid();
49 session->vuid = UID_FIELD_INVALID;
50 session->transport->reference_count++;
55 /****************************************************************************
56 reduce reference_count and destroy is <= 0
57 ****************************************************************************/
58 void cli_session_close(struct cli_session *session)
60 session->reference_count--;
61 if (session->reference_count <= 0) {
62 cli_transport_close(session->transport);
63 talloc_destroy(session->mem_ctx);
67 /****************************************************************************
68 Perform a session setup (async send)
69 ****************************************************************************/
70 struct cli_request *smb_raw_session_setup_send(struct cli_session *session, union smb_sesssetup *parms)
72 struct cli_request *req;
74 switch (parms->generic.level) {
75 case RAW_SESSSETUP_GENERIC:
76 /* handled elsewhere */
79 case RAW_SESSSETUP_OLD:
80 SETUP_REQUEST_SESSION(SMBsesssetupX, 10, 0);
81 SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
82 SSVAL(req->out.vwv, VWV(1), 0);
83 SSVAL(req->out.vwv,VWV(2),parms->old.in.bufsize);
84 SSVAL(req->out.vwv,VWV(3),parms->old.in.mpx_max);
85 SSVAL(req->out.vwv,VWV(4),parms->old.in.vc_num);
86 SIVAL(req->out.vwv,VWV(5),parms->old.in.sesskey);
87 SSVAL(req->out.vwv,VWV(7),parms->old.in.password.length);
88 cli_req_append_blob(req, &parms->old.in.password);
89 cli_req_append_string(req, parms->old.in.user, STR_TERMINATE);
90 cli_req_append_string(req, parms->old.in.domain, STR_TERMINATE|STR_UPPER);
91 cli_req_append_string(req, parms->old.in.os, STR_TERMINATE);
92 cli_req_append_string(req, parms->old.in.lanman, STR_TERMINATE);
95 case RAW_SESSSETUP_NT1:
96 SETUP_REQUEST_SESSION(SMBsesssetupX, 13, 0);
97 SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
98 SSVAL(req->out.vwv, VWV(1), 0);
99 SSVAL(req->out.vwv, VWV(2), parms->nt1.in.bufsize);
100 SSVAL(req->out.vwv, VWV(3), parms->nt1.in.mpx_max);
101 SSVAL(req->out.vwv, VWV(4), parms->nt1.in.vc_num);
102 SIVAL(req->out.vwv, VWV(5), parms->nt1.in.sesskey);
103 SSVAL(req->out.vwv, VWV(7), parms->nt1.in.password1.length);
104 SSVAL(req->out.vwv, VWV(8), parms->nt1.in.password2.length);
105 SIVAL(req->out.vwv, VWV(9), 0); /* reserved */
106 SIVAL(req->out.vwv, VWV(11), parms->nt1.in.capabilities);
107 cli_req_append_blob(req, &parms->nt1.in.password1);
108 cli_req_append_blob(req, &parms->nt1.in.password2);
109 cli_req_append_string(req, parms->nt1.in.user, STR_TERMINATE);
110 cli_req_append_string(req, parms->nt1.in.domain, STR_TERMINATE|STR_UPPER);
111 cli_req_append_string(req, parms->nt1.in.os, STR_TERMINATE);
112 cli_req_append_string(req, parms->nt1.in.lanman, STR_TERMINATE);
115 case RAW_SESSSETUP_SPNEGO:
116 SETUP_REQUEST_SESSION(SMBsesssetupX, 12, 0);
117 SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
118 SSVAL(req->out.vwv, VWV(1), 0);
119 SSVAL(req->out.vwv, VWV(2), parms->spnego.in.bufsize);
120 SSVAL(req->out.vwv, VWV(3), parms->spnego.in.mpx_max);
121 SSVAL(req->out.vwv, VWV(4), parms->spnego.in.vc_num);
122 SIVAL(req->out.vwv, VWV(5), parms->spnego.in.sesskey);
123 SSVAL(req->out.vwv, VWV(7), parms->spnego.in.secblob.length);
124 SIVAL(req->out.vwv, VWV(10), parms->spnego.in.capabilities);
125 cli_req_append_blob(req, &parms->spnego.in.secblob);
126 cli_req_append_string(req, parms->spnego.in.os, STR_TERMINATE);
127 cli_req_append_string(req, parms->spnego.in.lanman, STR_TERMINATE);
131 if (!cli_request_send(req)) {
132 cli_request_destroy(req);
140 /****************************************************************************
141 Perform a session setup (async recv)
142 ****************************************************************************/
143 NTSTATUS smb_raw_session_setup_recv(struct cli_request *req,
145 union smb_sesssetup *parms)
150 if (!cli_request_receive(req)) {
151 return cli_request_destroy(req);
154 if (!NT_STATUS_IS_OK(req->status) &&
155 !NT_STATUS_EQUAL(req->status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
156 return cli_request_destroy(req);
159 switch (parms->generic.level) {
160 case RAW_SESSSETUP_GENERIC:
161 /* handled elsewhere */
162 return NT_STATUS_INVALID_LEVEL;
164 case RAW_SESSSETUP_OLD:
165 CLI_CHECK_WCT(req, 3);
166 ZERO_STRUCT(parms->old.out);
167 parms->old.out.vuid = SVAL(req->in.hdr, HDR_UID);
168 parms->old.out.action = SVAL(req->in.vwv, VWV(2));
171 p += cli_req_pull_string(req, mem_ctx, &parms->old.out.os, p, -1, STR_TERMINATE);
172 p += cli_req_pull_string(req, mem_ctx, &parms->old.out.lanman, p, -1, STR_TERMINATE);
173 p += cli_req_pull_string(req, mem_ctx, &parms->old.out.domain, p, -1, STR_TERMINATE);
177 case RAW_SESSSETUP_NT1:
178 CLI_CHECK_WCT(req, 3);
179 ZERO_STRUCT(parms->nt1.out);
180 parms->nt1.out.vuid = SVAL(req->in.hdr, HDR_UID);
181 parms->nt1.out.action = SVAL(req->in.vwv, VWV(2));
184 p += cli_req_pull_string(req, mem_ctx, &parms->nt1.out.os, p, -1, STR_TERMINATE);
185 p += cli_req_pull_string(req, mem_ctx, &parms->nt1.out.lanman, p, -1, STR_TERMINATE);
186 if (p < (req->in.data + req->in.data_size)) {
187 p += cli_req_pull_string(req, mem_ctx, &parms->nt1.out.domain, p, -1, STR_TERMINATE);
192 case RAW_SESSSETUP_SPNEGO:
193 CLI_CHECK_WCT(req, 4);
194 ZERO_STRUCT(parms->spnego.out);
195 parms->spnego.out.vuid = SVAL(req->in.hdr, HDR_UID);
196 parms->spnego.out.action = SVAL(req->in.vwv, VWV(2));
197 len = SVAL(req->in.vwv, VWV(3));
203 parms->spnego.out.secblob = cli_req_pull_blob(req, mem_ctx, p, len);
204 p += parms->spnego.out.secblob.length;
205 p += cli_req_pull_string(req, mem_ctx, &parms->spnego.out.os, p, -1, STR_TERMINATE);
206 p += cli_req_pull_string(req, mem_ctx, &parms->spnego.out.lanman, p, -1, STR_TERMINATE);
207 p += cli_req_pull_string(req, mem_ctx, &parms->spnego.out.domain, p, -1, STR_TERMINATE);
212 return cli_request_destroy(req);
216 form an encrypted lanman password from a plaintext password
217 and the server supplied challenge
219 static DATA_BLOB lanman_blob(const char *pass, DATA_BLOB challenge)
221 DATA_BLOB blob = data_blob(NULL, 24);
222 SMBencrypt(pass, challenge.data, blob.data);
227 form an encrypted NT password from a plaintext password
228 and the server supplied challenge
230 static DATA_BLOB nt_blob(const char *pass, DATA_BLOB challenge)
232 DATA_BLOB blob = data_blob(NULL, 24);
233 SMBNTencrypt(pass, challenge.data, blob.data);
238 setup signing for a NT1 style session setup
240 static void setup_nt1_signing(struct cli_transport *transport, const char *password)
243 uchar session_key[16];
244 DATA_BLOB nt_response;
246 E_md4hash(password, nt_hash);
247 SMBsesskeygen_ntv1(nt_hash, NULL, session_key);
248 nt_response = nt_blob(password, transport->negotiate.secblob);
250 cli_transport_set_session_key(transport, session_key);
252 cli_transport_simple_set_signing(transport, session_key, nt_response);
255 /****************************************************************************
256 Perform a session setup (sync interface) using generic interface and the old
258 ****************************************************************************/
259 static NTSTATUS smb_raw_session_setup_generic_old(struct cli_session *session,
261 union smb_sesssetup *parms)
264 union smb_sesssetup s2;
266 /* use the old interface */
267 s2.generic.level = RAW_SESSSETUP_OLD;
268 s2.old.in.bufsize = ~0;
269 s2.old.in.mpx_max = 50;
270 s2.old.in.vc_num = 1;
271 s2.old.in.sesskey = parms->generic.in.sesskey;
272 s2.old.in.domain = parms->generic.in.domain;
273 s2.old.in.user = parms->generic.in.user;
274 s2.old.in.os = "Unix";
275 s2.old.in.lanman = "Samba";
277 if (!parms->generic.in.password) {
278 s2.old.in.password = data_blob(NULL, 0);
279 } else if (session->transport->negotiate.sec_mode &
280 NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) {
281 s2.old.in.password = lanman_blob(parms->generic.in.password,
282 session->transport->negotiate.secblob);
284 s2.old.in.password = data_blob(parms->generic.in.password,
285 strlen(parms->generic.in.password));
288 status = smb_raw_session_setup(session, mem_ctx, &s2);
290 data_blob_free(&s2.old.in.password);
292 if (!NT_STATUS_IS_OK(status)) {
296 parms->generic.out.vuid = s2.old.out.vuid;
297 parms->generic.out.os = s2.old.out.os;
298 parms->generic.out.lanman = s2.old.out.lanman;
299 parms->generic.out.domain = s2.old.out.domain;
304 /****************************************************************************
305 Perform a session setup (sync interface) using generic interface and the NT1
307 ****************************************************************************/
308 static NTSTATUS smb_raw_session_setup_generic_nt1(struct cli_session *session,
310 union smb_sesssetup *parms)
313 union smb_sesssetup s2;
315 s2.generic.level = RAW_SESSSETUP_NT1;
316 s2.nt1.in.bufsize = ~0;
317 s2.nt1.in.mpx_max = 50;
318 s2.nt1.in.vc_num = 1;
319 s2.nt1.in.sesskey = parms->generic.in.sesskey;
320 s2.nt1.in.capabilities = parms->generic.in.capabilities;
321 s2.nt1.in.domain = parms->generic.in.domain;
322 s2.nt1.in.user = parms->generic.in.user;
323 s2.nt1.in.os = "Unix";
324 s2.nt1.in.lanman = "Samba";
326 if (!parms->generic.in.password) {
327 s2.nt1.in.password1 = data_blob(NULL, 0);
328 s2.nt1.in.password2 = data_blob(NULL, 0);
329 } else if (session->transport->negotiate.sec_mode &
330 NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) {
331 s2.nt1.in.password1 = lanman_blob(parms->generic.in.password,
332 session->transport->negotiate.secblob);
333 s2.nt1.in.password2 = nt_blob(parms->generic.in.password,
334 session->transport->negotiate.secblob);
335 setup_nt1_signing(session->transport, parms->generic.in.password);
337 s2.nt1.in.password1 = data_blob(parms->generic.in.password,
338 strlen(parms->generic.in.password));
339 s2.nt1.in.password2 = data_blob(NULL, 0);
342 status = smb_raw_session_setup(session, mem_ctx, &s2);
344 data_blob_free(&s2.nt1.in.password1);
345 data_blob_free(&s2.nt1.in.password2);
347 if (!NT_STATUS_IS_OK(status)) {
351 parms->generic.out.vuid = s2.nt1.out.vuid;
352 parms->generic.out.os = s2.nt1.out.os;
353 parms->generic.out.lanman = s2.nt1.out.lanman;
354 parms->generic.out.domain = s2.nt1.out.domain;
360 /****************************************************************************
361 Perform a session setup (sync interface) using generic interface
362 ****************************************************************************/
363 static NTSTATUS smb_raw_session_setup_generic(struct cli_session *session,
365 union smb_sesssetup *parms)
367 if (session->transport->negotiate.protocol < PROTOCOL_LANMAN1) {
368 /* no session setup at all in earliest protocols */
369 ZERO_STRUCT(parms->generic.out);
373 /* see if we need to use the original session setup interface */
374 if (session->transport->negotiate.protocol < PROTOCOL_NT1) {
375 return smb_raw_session_setup_generic_old(session, mem_ctx, parms);
378 /* see if we should use the NT1 interface */
379 if (!(session->transport->negotiate.capabilities & CAP_EXTENDED_SECURITY) ||
380 !session->transport->options.use_spnego) {
381 return smb_raw_session_setup_generic_nt1(session, mem_ctx, parms);
384 /* default to using SPNEGO/NTLMSSP */
385 DEBUG(0,("Need to add client SPNEGO code back in\n"));
386 return NT_STATUS_UNSUCCESSFUL;
390 /****************************************************************************
391 Perform a session setup (sync interface)
392 this interface allows for RAW_SESSSETUP_GENERIC to auto-select session
393 setup varient based on negotiated protocol options
394 ****************************************************************************/
395 NTSTATUS smb_raw_session_setup(struct cli_session *session, TALLOC_CTX *mem_ctx,
396 union smb_sesssetup *parms)
398 struct cli_request *req;
400 if (parms->generic.level == RAW_SESSSETUP_GENERIC) {
401 return smb_raw_session_setup_generic(session, mem_ctx, parms);
404 req = smb_raw_session_setup_send(session, parms);
405 return smb_raw_session_setup_recv(req, mem_ctx, parms);
409 /****************************************************************************
410 Send a uloggoff (async send)
411 *****************************************************************************/
412 struct cli_request *smb_raw_ulogoff_send(struct cli_session *session)
414 struct cli_request *req;
416 SETUP_REQUEST_SESSION(SMBulogoffX, 2, 0);
418 SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
419 SSVAL(req->out.vwv, VWV(1), 0);
421 if (!cli_request_send(req)) {
422 cli_request_destroy(req);
429 /****************************************************************************
430 Send a uloggoff (sync interface)
431 *****************************************************************************/
432 NTSTATUS smb_raw_ulogoff(struct cli_session *session)
434 struct cli_request *req = smb_raw_ulogoff_send(session);
435 return cli_request_simple_recv(req);
439 /****************************************************************************
441 ****************************************************************************/
442 NTSTATUS smb_raw_exit(struct cli_session *session)
444 struct cli_request *req;
446 req = cli_request_setup_session(session, SMBexit, 0, 0);
448 if (cli_request_send(req)) {
449 cli_request_receive(req);
451 return cli_request_destroy(req);