2 Unix SMB/Netbios implementation.
5 Copyright (C) Andrew Tridgell 1992-1998
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.
26 extern fstring global_myworkgroup;
27 extern fstring remote_machine;
28 BOOL global_encrypted_passwords_negotiated;
30 /****************************************************************************
31 reply for the core protocol
32 ****************************************************************************/
33 static int reply_corep(char *inbuf, char *outbuf)
35 int outsize = set_message(outbuf,1,0,True);
37 Protocol = PROTOCOL_CORE;
43 /****************************************************************************
44 reply for the coreplus protocol
45 ****************************************************************************/
46 static int reply_coreplus(char *inbuf, char *outbuf)
48 int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
49 int outsize = set_message(outbuf,13,0,True);
50 SSVAL(outbuf,smb_vwv5,raw); /* tell redirector we support
51 readbraw and writebraw (possibly) */
52 /* Reply, SMBlockread, SMBwritelock supported. */
53 SCVAL(outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
54 SSVAL(outbuf,smb_vwv1,0x1); /* user level security, don't encrypt */
56 Protocol = PROTOCOL_COREPLUS;
62 /****************************************************************************
63 reply for the lanman 1.0 protocol
64 ****************************************************************************/
65 static int reply_lanman1(char *inbuf, char *outbuf)
67 int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
69 time_t t = time(NULL);
71 global_encrypted_passwords_negotiated = lp_encrypted_passwords();
73 if (lp_security()>=SEC_USER) secword |= 1;
74 if (global_encrypted_passwords_negotiated) secword |= 2;
76 set_message(outbuf,13,global_encrypted_passwords_negotiated?8:0,True);
77 SSVAL(outbuf,smb_vwv1,secword);
78 /* Create a token value and add it to the outgoing packet. */
79 if (global_encrypted_passwords_negotiated)
80 generate_next_challenge(smb_buf(outbuf));
82 Protocol = PROTOCOL_LANMAN1;
84 /* Reply, SMBlockread, SMBwritelock supported. */
85 SCVAL(outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
86 SSVAL(outbuf,smb_vwv2,max_recv);
87 SSVAL(outbuf,smb_vwv3,lp_maxmux()); /* maxmux */
88 SSVAL(outbuf,smb_vwv4,1);
89 SSVAL(outbuf,smb_vwv5,raw); /* tell redirector we support
90 readbraw writebraw (possibly) */
91 SIVAL(outbuf,smb_vwv6,sys_getpid());
92 SSVAL(outbuf,smb_vwv10, TimeDiff(t)/60);
94 put_dos_date(outbuf,smb_vwv8,t);
96 return (smb_len(outbuf)+4);
100 /****************************************************************************
101 reply for the lanman 2.0 protocol
102 ****************************************************************************/
103 static int reply_lanman2(char *inbuf, char *outbuf)
105 int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
107 time_t t = time(NULL);
108 struct cli_state *cli = NULL;
112 global_encrypted_passwords_negotiated = lp_encrypted_passwords();
114 if (lp_security() == SEC_SERVER) {
115 cli = server_cryptkey();
119 DEBUG(3,("using password server validation\n"));
120 global_encrypted_passwords_negotiated = ((cli->sec_mode & 2) != 0);
123 if (lp_security()>=SEC_USER) secword |= 1;
124 if (global_encrypted_passwords_negotiated) secword |= 2;
126 if (global_encrypted_passwords_negotiated) {
129 generate_next_challenge(cryptkey);
131 memcpy(cryptkey, cli->secblob.data, 8);
132 set_challenge((unsigned char *)cryptkey);
136 set_message(outbuf,13,crypt_len,True);
137 SSVAL(outbuf,smb_vwv1,secword);
138 SIVAL(outbuf,smb_vwv6,sys_getpid());
139 if (global_encrypted_passwords_negotiated)
140 memcpy(smb_buf(outbuf), cryptkey, 8);
142 Protocol = PROTOCOL_LANMAN2;
144 /* Reply, SMBlockread, SMBwritelock supported. */
145 SCVAL(outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
146 SSVAL(outbuf,smb_vwv2,max_recv);
147 SSVAL(outbuf,smb_vwv3,lp_maxmux());
148 SSVAL(outbuf,smb_vwv4,1);
149 SSVAL(outbuf,smb_vwv5,raw); /* readbraw and/or writebraw */
150 SSVAL(outbuf,smb_vwv10, TimeDiff(t)/60);
151 put_dos_date(outbuf,smb_vwv8,t);
153 return (smb_len(outbuf)+4);
159 generate the spnego negprot reply blob. Return the number of bytes used
161 static int negprot_spnego(char *p, uint8 cryptkey[8])
164 extern pstring global_myname;
166 const char *OIDs[] = {OID_NTLMSSP,
174 safe_strcpy((char *)guid, global_myname, 16);
175 strlower((char *)guid);
177 /* win2000 uses host$@REALM, which we will probably use eventually,
178 but for now this works */
179 asprintf(&principal, "HOST/%s@%s", guid, lp_realm());
180 blob = spnego_gen_negTokenInit(guid, OIDs, principal);
183 memcpy(p, blob.data, blob.length);
185 data_blob_free(&blob);
191 /****************************************************************************
192 reply for the nt protocol
193 ****************************************************************************/
194 static int reply_nt1(char *inbuf, char *outbuf)
196 /* dual names + lock_and_read + nt SMBs + remote API calls */
197 int capabilities = CAP_NT_FIND|CAP_LOCK_AND_READ|
198 CAP_LEVEL_II_OPLOCKS|CAP_STATUS32;
201 time_t t = time(NULL);
202 struct cli_state *cli = NULL;
205 BOOL negotiate_spnego = False;
207 global_encrypted_passwords_negotiated = lp_encrypted_passwords();
209 if (lp_security() == SEC_SERVER) {
210 DEBUG(5,("attempting password server validation\n"));
211 cli = server_cryptkey();
213 DEBUG(5,("not attempting password server validation\n"));
214 /* do spnego in user level security if the client
215 supports it and we can do encrypted passwords */
216 if (global_encrypted_passwords_negotiated &&
217 lp_security() == SEC_USER &&
218 (SVAL(inbuf, smb_flg2) & FLAGS2_EXTENDED_SECURITY)) {
219 negotiate_spnego = True;
220 capabilities |= CAP_EXTENDED_SECURITY;
225 DEBUG(3,("using password server validation\n"));
226 global_encrypted_passwords_negotiated = ((cli->sec_mode & 2) != 0);
228 DEBUG(3,("not using password server validation\n"));
231 if (global_encrypted_passwords_negotiated) {
233 generate_next_challenge((char *)cryptkey);
235 memcpy(cryptkey, cli->secblob.data, 8);
236 set_challenge(cryptkey);
240 capabilities |= CAP_NT_SMBS|CAP_RPC_REMOTE_APIS;
242 if (lp_large_readwrite() && (SMB_OFF_T_BITS == 64)) {
243 capabilities |= CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_W2K_SMBS;
246 if (SMB_OFF_T_BITS == 64) {
247 capabilities |= CAP_LARGE_FILES;
250 if (lp_readraw() && lp_writeraw()) {
251 capabilities |= CAP_RAW_MODE;
254 /* allow for disabling unicode */
256 capabilities |= CAP_UNICODE;
260 capabilities |= CAP_DFS;
262 if (lp_security() >= SEC_USER) secword |= 1;
263 if (global_encrypted_passwords_negotiated) secword |= 2;
265 set_message(outbuf,17,0,True);
267 CVAL(outbuf,smb_vwv1) = secword;
269 Protocol = PROTOCOL_NT1;
271 SSVAL(outbuf,smb_vwv1+1,lp_maxmux()); /* maxmpx */
272 SSVAL(outbuf,smb_vwv2+1,1); /* num vcs */
273 SIVAL(outbuf,smb_vwv3+1,0xffff); /* max buffer. LOTS! */
274 SIVAL(outbuf,smb_vwv5+1,0x10000); /* raw size. full 64k */
275 SIVAL(outbuf,smb_vwv7+1,sys_getpid()); /* session key */
276 SIVAL(outbuf,smb_vwv9+1,capabilities); /* capabilities */
277 put_long_date(outbuf+smb_vwv11+1,t);
278 SSVALS(outbuf,smb_vwv15+1,TimeDiff(t)/60);
280 p = q = smb_buf(outbuf);
281 if (!negotiate_spnego) {
282 if (global_encrypted_passwords_negotiated) memcpy(p, cryptkey, 8);
283 SSVALS(outbuf,smb_vwv16+1,8);
286 int len = negprot_spnego(p, cryptkey);
287 SSVALS(outbuf,smb_vwv16+1,len);
290 p += srvstr_push(outbuf, p, global_myworkgroup, -1,
291 STR_UNICODE|STR_TERMINATE|STR_NOALIGN);
293 SSVAL(outbuf,smb_vwv17, p - q); /* length of challenge+domain strings */
294 set_message_end(outbuf, p);
296 return (smb_len(outbuf)+4);
299 /* these are the protocol lists used for auto architecture detection:
302 protocol [PC NETWORK PROGRAM 1.0]
303 protocol [XENIX CORE]
304 protocol [MICROSOFT NETWORKS 1.03]
306 protocol [Windows for Workgroups 3.1a]
309 protocol [NT LM 0.12]
312 protocol [PC NETWORK PROGRAM 1.0]
313 protocol [XENIX CORE]
314 protocol [MICROSOFT NETWORKS 1.03]
316 protocol [Windows for Workgroups 3.1a]
319 protocol [NT LM 0.12]
322 protocol [PC NETWORK PROGRAM 1.0]
324 protocol [Windows for Workgroups 3.1a]
327 protocol [NT LM 0.12]
330 protocol [PC NETWORK PROGRAM 1.0]
331 protocol [XENIX CORE]
338 * Modified to recognize the architecture of the remote machine better.
340 * This appears to be the matrix of which protocol is used by which
342 Protocol WfWg Win95 WinNT Win2K OS/2
343 PC NETWORK PROGRAM 1.0 1 1 1 1 1
345 MICROSOFT NETWORKS 3.0 2 2
347 MICROSOFT NETWORKS 1.03 3
350 Windows for Workgroups 3.1a 5 5 5 3
355 * tim@fsg.com 09/29/95
356 * Win2K added by matty 17/7/99
359 #define ARCH_WFWG 0x3 /* This is a fudge because WfWg is like Win95 */
360 #define ARCH_WIN95 0x2
361 #define ARCH_WINNT 0x4
362 #define ARCH_WIN2K 0xC /* Win2K is like NT */
363 #define ARCH_OS2 0x14 /* Again OS/2 is like NT */
364 #define ARCH_SAMBA 0x20
366 #define ARCH_ALL 0x3F
368 /* List of supported protocols, most desired first */
372 int (*proto_reply_fn)(char *, char *);
374 } supported_protocols[] = {
375 {"NT LANMAN 1.0", "NT1", reply_nt1, PROTOCOL_NT1},
376 {"NT LM 0.12", "NT1", reply_nt1, PROTOCOL_NT1},
377 {"LM1.2X002", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
378 {"Samba", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
379 {"DOS LM1.2X002", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
380 {"LANMAN1.0", "LANMAN1", reply_lanman1, PROTOCOL_LANMAN1},
381 {"MICROSOFT NETWORKS 3.0", "LANMAN1", reply_lanman1, PROTOCOL_LANMAN1},
382 {"MICROSOFT NETWORKS 1.03", "COREPLUS", reply_coreplus, PROTOCOL_COREPLUS},
383 {"PC NETWORK PROGRAM 1.0", "CORE", reply_corep, PROTOCOL_CORE},
388 /****************************************************************************
390 ****************************************************************************/
391 int reply_negprot(connection_struct *conn,
392 char *inbuf,char *outbuf, int dum_size,
395 int outsize = set_message(outbuf,1,0,True);
400 int bcc = SVAL(smb_buf(inbuf),-2);
402 START_PROFILE(SMBnegprot);
404 p = smb_buf(inbuf)+1;
405 while (p < (smb_buf(inbuf) + bcc))
408 DEBUG(3,("Requested protocol [%s]\n",p));
409 if (strcsequal(p,"Windows for Workgroups 3.1a"))
410 arch &= ( ARCH_WFWG | ARCH_WIN95 | ARCH_WINNT | ARCH_WIN2K );
411 else if (strcsequal(p,"DOS LM1.2X002"))
412 arch &= ( ARCH_WFWG | ARCH_WIN95 );
413 else if (strcsequal(p,"DOS LANMAN2.1"))
414 arch &= ( ARCH_WFWG | ARCH_WIN95 );
415 else if (strcsequal(p,"NT LM 0.12"))
416 arch &= ( ARCH_WIN95 | ARCH_WINNT | ARCH_WIN2K );
417 else if (strcsequal(p,"LANMAN2.1"))
418 arch &= ( ARCH_WINNT | ARCH_WIN2K | ARCH_OS2 );
419 else if (strcsequal(p,"LM1.2X002"))
420 arch &= ( ARCH_WINNT | ARCH_WIN2K | ARCH_OS2 );
421 else if (strcsequal(p,"MICROSOFT NETWORKS 1.03"))
423 else if (strcsequal(p,"XENIX CORE"))
424 arch &= ( ARCH_WINNT | ARCH_OS2 );
425 else if (strcsequal(p,"Samba")) {
435 set_remote_arch(RA_SAMBA);
438 set_remote_arch(RA_WFWG);
441 set_remote_arch(RA_WIN95);
444 if(SVAL(inbuf,smb_flg2)==FLAGS2_WIN2K_SIGNATURE)
445 set_remote_arch(RA_WIN2K);
447 set_remote_arch(RA_WINNT);
450 set_remote_arch(RA_WIN2K);
453 set_remote_arch(RA_OS2);
456 set_remote_arch(RA_UNKNOWN);
460 /* possibly reload - change of architecture */
461 reload_services(True);
463 /* a special case to stop password server loops */
464 if (Index == 1 && strequal(remote_machine,myhostname()) &&
465 (lp_security()==SEC_SERVER || lp_security()==SEC_DOMAIN))
466 exit_server("Password server loop!");
468 /* Check for protocols, most desirable first */
469 for (protocol = 0; supported_protocols[protocol].proto_name; protocol++)
471 p = smb_buf(inbuf)+1;
473 if ((supported_protocols[protocol].protocol_level <= lp_maxprotocol()) &&
474 (supported_protocols[protocol].protocol_level >= lp_minprotocol()))
475 while (p < (smb_buf(inbuf) + bcc))
477 if (strequal(p,supported_protocols[protocol].proto_name))
486 SSVAL(outbuf,smb_vwv0,choice);
488 extern fstring remote_proto;
489 fstrcpy(remote_proto,supported_protocols[protocol].short_name);
490 reload_services(True);
491 outsize = supported_protocols[protocol].proto_reply_fn(inbuf, outbuf);
492 DEBUG(3,("Selected protocol %s\n",supported_protocols[protocol].proto_name));
495 DEBUG(0,("No protocol supported !\n"));
497 SSVAL(outbuf,smb_vwv0,choice);
499 DEBUG( 5, ( "negprot index=%d\n", choice ) );
501 END_PROFILE(SMBnegprot);