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 *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 *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 *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 *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->cryptkey, 8);
132 set_challenge(cli->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);
157 /****************************************************************************
158 reply for the nt protocol
159 ****************************************************************************/
160 static int reply_nt1(char *outbuf)
162 /* dual names + lock_and_read + nt SMBs + remote API calls */
163 int capabilities = CAP_NT_FIND|CAP_LOCK_AND_READ|
164 CAP_LEVEL_II_OPLOCKS|CAP_STATUS32;
167 time_t t = time(NULL);
168 struct cli_state *cli = NULL;
173 global_encrypted_passwords_negotiated = lp_encrypted_passwords();
175 if (lp_security() == SEC_SERVER) {
176 DEBUG(5,("attempting password server validation\n"));
177 cli = server_cryptkey();
179 DEBUG(5,("not attempting password server validation\n"));
183 DEBUG(3,("using password server validation\n"));
184 global_encrypted_passwords_negotiated = ((cli->sec_mode & 2) != 0);
186 DEBUG(3,("not using password server validation\n"));
189 if (global_encrypted_passwords_negotiated) {
192 generate_next_challenge(cryptkey);
194 memcpy(cryptkey, cli->cryptkey, 8);
195 set_challenge(cli->cryptkey);
199 capabilities |= CAP_NT_SMBS|CAP_RPC_REMOTE_APIS;
201 if (lp_large_readwrite() && (SMB_OFF_T_BITS == 64)) {
202 capabilities |= CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_W2K_SMBS;
205 if (SMB_OFF_T_BITS == 64) {
206 capabilities |= CAP_LARGE_FILES;
209 if (lp_readraw() && lp_writeraw()) {
210 capabilities |= CAP_RAW_MODE;
213 /* allow for disabling unicode */
215 capabilities |= CAP_UNICODE;
219 capabilities |= CAP_DFS;
221 if (lp_security() >= SEC_USER) secword |= 1;
222 if (global_encrypted_passwords_negotiated) secword |= 2;
224 set_message(outbuf,17,0,True);
226 CVAL(outbuf,smb_vwv1) = secword;
227 SSVALS(outbuf,smb_vwv16+1,crypt_len);
229 Protocol = PROTOCOL_NT1;
231 SSVAL(outbuf,smb_vwv1+1,lp_maxmux()); /* maxmpx */
232 SSVAL(outbuf,smb_vwv2+1,1); /* num vcs */
233 SIVAL(outbuf,smb_vwv3+1,0xffff); /* max buffer. LOTS! */
234 SIVAL(outbuf,smb_vwv5+1,0x10000); /* raw size. full 64k */
235 SIVAL(outbuf,smb_vwv7+1,sys_getpid()); /* session key */
236 SIVAL(outbuf,smb_vwv9+1,capabilities); /* capabilities */
237 put_long_date(outbuf+smb_vwv11+1,t);
238 SSVALS(outbuf,smb_vwv15+1,TimeDiff(t)/60);
240 p = q = smb_buf(outbuf);
241 if (global_encrypted_passwords_negotiated) memcpy(p, cryptkey, 8);
243 p += srvstr_push(outbuf, p, global_myworkgroup, -1,
244 STR_UNICODE|STR_TERMINATE|STR_NOALIGN);
246 SSVAL(outbuf,smb_vwv17, p - q); /* length of challenge+domain strings */
247 set_message_end(outbuf, p);
249 return (smb_len(outbuf)+4);
252 /* these are the protocol lists used for auto architecture detection:
255 protocol [PC NETWORK PROGRAM 1.0]
256 protocol [XENIX CORE]
257 protocol [MICROSOFT NETWORKS 1.03]
259 protocol [Windows for Workgroups 3.1a]
262 protocol [NT LM 0.12]
265 protocol [PC NETWORK PROGRAM 1.0]
266 protocol [XENIX CORE]
267 protocol [MICROSOFT NETWORKS 1.03]
269 protocol [Windows for Workgroups 3.1a]
272 protocol [NT LM 0.12]
275 protocol [PC NETWORK PROGRAM 1.0]
277 protocol [Windows for Workgroups 3.1a]
280 protocol [NT LM 0.12]
283 protocol [PC NETWORK PROGRAM 1.0]
284 protocol [XENIX CORE]
291 * Modified to recognize the architecture of the remote machine better.
293 * This appears to be the matrix of which protocol is used by which
295 Protocol WfWg Win95 WinNT Win2K OS/2
296 PC NETWORK PROGRAM 1.0 1 1 1 1 1
298 MICROSOFT NETWORKS 3.0 2 2
300 MICROSOFT NETWORKS 1.03 3
303 Windows for Workgroups 3.1a 5 5 5 3
308 * tim@fsg.com 09/29/95
309 * Win2K added by matty 17/7/99
312 #define ARCH_WFWG 0x3 /* This is a fudge because WfWg is like Win95 */
313 #define ARCH_WIN95 0x2
314 #define ARCH_WINNT 0x4
315 #define ARCH_WIN2K 0xC /* Win2K is like NT */
316 #define ARCH_OS2 0x14 /* Again OS/2 is like NT */
317 #define ARCH_SAMBA 0x20
319 #define ARCH_ALL 0x3F
321 /* List of supported protocols, most desired first */
325 int (*proto_reply_fn)(char *);
327 } supported_protocols[] = {
328 {"NT LANMAN 1.0", "NT1", reply_nt1, PROTOCOL_NT1},
329 {"NT LM 0.12", "NT1", reply_nt1, PROTOCOL_NT1},
330 {"LM1.2X002", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
331 {"Samba", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
332 {"DOS LM1.2X002", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
333 {"LANMAN1.0", "LANMAN1", reply_lanman1, PROTOCOL_LANMAN1},
334 {"MICROSOFT NETWORKS 3.0", "LANMAN1", reply_lanman1, PROTOCOL_LANMAN1},
335 {"MICROSOFT NETWORKS 1.03", "COREPLUS", reply_coreplus, PROTOCOL_COREPLUS},
336 {"PC NETWORK PROGRAM 1.0", "CORE", reply_corep, PROTOCOL_CORE},
341 /****************************************************************************
343 ****************************************************************************/
344 int reply_negprot(connection_struct *conn,
345 char *inbuf,char *outbuf, int dum_size,
348 int outsize = set_message(outbuf,1,0,True);
353 int bcc = SVAL(smb_buf(inbuf),-2);
355 START_PROFILE(SMBnegprot);
357 p = smb_buf(inbuf)+1;
358 while (p < (smb_buf(inbuf) + bcc))
361 DEBUG(3,("Requested protocol [%s]\n",p));
362 if (strcsequal(p,"Windows for Workgroups 3.1a"))
363 arch &= ( ARCH_WFWG | ARCH_WIN95 | ARCH_WINNT | ARCH_WIN2K );
364 else if (strcsequal(p,"DOS LM1.2X002"))
365 arch &= ( ARCH_WFWG | ARCH_WIN95 );
366 else if (strcsequal(p,"DOS LANMAN2.1"))
367 arch &= ( ARCH_WFWG | ARCH_WIN95 );
368 else if (strcsequal(p,"NT LM 0.12"))
369 arch &= ( ARCH_WIN95 | ARCH_WINNT | ARCH_WIN2K );
370 else if (strcsequal(p,"LANMAN2.1"))
371 arch &= ( ARCH_WINNT | ARCH_WIN2K | ARCH_OS2 );
372 else if (strcsequal(p,"LM1.2X002"))
373 arch &= ( ARCH_WINNT | ARCH_WIN2K | ARCH_OS2 );
374 else if (strcsequal(p,"MICROSOFT NETWORKS 1.03"))
376 else if (strcsequal(p,"XENIX CORE"))
377 arch &= ( ARCH_WINNT | ARCH_OS2 );
378 else if (strcsequal(p,"Samba")) {
388 set_remote_arch(RA_SAMBA);
391 set_remote_arch(RA_WFWG);
394 set_remote_arch(RA_WIN95);
397 if(SVAL(inbuf,smb_flg2)==FLAGS2_WIN2K_SIGNATURE)
398 set_remote_arch(RA_WIN2K);
400 set_remote_arch(RA_WINNT);
403 set_remote_arch(RA_WIN2K);
406 set_remote_arch(RA_OS2);
409 set_remote_arch(RA_UNKNOWN);
413 /* possibly reload - change of architecture */
414 reload_services(True);
416 /* a special case to stop password server loops */
417 if (Index == 1 && strequal(remote_machine,myhostname()) &&
418 (lp_security()==SEC_SERVER || lp_security()==SEC_DOMAIN))
419 exit_server("Password server loop!");
421 /* Check for protocols, most desirable first */
422 for (protocol = 0; supported_protocols[protocol].proto_name; protocol++)
424 p = smb_buf(inbuf)+1;
426 if ((supported_protocols[protocol].protocol_level <= lp_maxprotocol()) &&
427 (supported_protocols[protocol].protocol_level >= lp_minprotocol()))
428 while (p < (smb_buf(inbuf) + bcc))
430 if (strequal(p,supported_protocols[protocol].proto_name))
439 SSVAL(outbuf,smb_vwv0,choice);
441 extern fstring remote_proto;
442 fstrcpy(remote_proto,supported_protocols[protocol].short_name);
443 reload_services(True);
444 outsize = supported_protocols[protocol].proto_reply_fn(outbuf);
445 DEBUG(3,("Selected protocol %s\n",supported_protocols[protocol].proto_name));
448 DEBUG(0,("No protocol supported !\n"));
450 SSVAL(outbuf,smb_vwv0,choice);
452 DEBUG( 5, ( "negprot index=%d\n", choice ) );
454 END_PROFILE(SMBnegprot);