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 = False;
29 BOOL global_spnego_negotiated = False;
30 auth_authsupplied_info *negprot_global_auth_info = NULL;
32 /****************************************************************************
33 reply for the core protocol
34 ****************************************************************************/
35 static int reply_corep(char *inbuf, char *outbuf)
37 int outsize = set_message(outbuf,1,0,True);
39 Protocol = PROTOCOL_CORE;
45 /****************************************************************************
46 reply for the coreplus protocol
47 ****************************************************************************/
48 static int reply_coreplus(char *inbuf, char *outbuf)
50 int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
51 int outsize = set_message(outbuf,13,0,True);
52 SSVAL(outbuf,smb_vwv5,raw); /* tell redirector we support
53 readbraw and writebraw (possibly) */
54 /* Reply, SMBlockread, SMBwritelock supported. */
55 SCVAL(outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
56 SSVAL(outbuf,smb_vwv1,0x1); /* user level security, don't encrypt */
58 Protocol = PROTOCOL_COREPLUS;
64 /****************************************************************************
65 reply for the lanman 1.0 protocol
66 ****************************************************************************/
67 static int reply_lanman1(char *inbuf, char *outbuf)
69 int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
71 time_t t = time(NULL);
74 global_encrypted_passwords_negotiated = lp_encrypted_passwords();
76 if (lp_security()>=SEC_USER) secword |= 1;
77 if (global_encrypted_passwords_negotiated) secword |= 2;
79 set_message(outbuf,13,global_encrypted_passwords_negotiated?8:0,True);
80 SSVAL(outbuf,smb_vwv1,secword);
81 /* Create a token value and add it to the outgoing packet. */
82 if (global_encrypted_passwords_negotiated) {
83 if (!make_auth_info_subsystem(&negprot_global_auth_info)) {
84 smb_panic("cannot make_negprot_global_auth_info!\n");
86 cryptkey = auth_get_challange(negprot_global_auth_info);
87 memcpy(smb_buf(outbuf), cryptkey.data, 8);
88 data_blob_free(&cryptkey);
91 Protocol = PROTOCOL_LANMAN1;
93 /* Reply, SMBlockread, SMBwritelock supported. */
94 SCVAL(outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
95 SSVAL(outbuf,smb_vwv2,max_recv);
96 SSVAL(outbuf,smb_vwv3,lp_maxmux()); /* maxmux */
97 SSVAL(outbuf,smb_vwv4,1);
98 SSVAL(outbuf,smb_vwv5,raw); /* tell redirector we support
99 readbraw writebraw (possibly) */
100 SIVAL(outbuf,smb_vwv6,sys_getpid());
101 SSVAL(outbuf,smb_vwv10, TimeDiff(t)/60);
103 put_dos_date(outbuf,smb_vwv8,t);
105 return (smb_len(outbuf)+4);
109 /****************************************************************************
110 reply for the lanman 2.0 protocol
111 ****************************************************************************/
112 static int reply_lanman2(char *inbuf, char *outbuf)
114 int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
116 time_t t = time(NULL);
119 global_encrypted_passwords_negotiated = lp_encrypted_passwords();
121 if (lp_security()>=SEC_USER) secword |= 1;
122 if (global_encrypted_passwords_negotiated) secword |= 2;
124 set_message(outbuf,13,global_encrypted_passwords_negotiated?8:0,True);
125 SSVAL(outbuf,smb_vwv1,secword);
126 SIVAL(outbuf,smb_vwv6,sys_getpid());
128 if (global_encrypted_passwords_negotiated) {
129 if (!make_auth_info_subsystem(&negprot_global_auth_info)) {
130 smb_panic("cannot make_negprot_global_auth_info!\n");
132 cryptkey = auth_get_challange(negprot_global_auth_info);
133 memcpy(smb_buf(outbuf), cryptkey.data, 8);
134 data_blob_free(&cryptkey);
137 Protocol = PROTOCOL_LANMAN2;
139 /* Reply, SMBlockread, SMBwritelock supported. */
140 SCVAL(outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
141 SSVAL(outbuf,smb_vwv2,max_recv);
142 SSVAL(outbuf,smb_vwv3,lp_maxmux());
143 SSVAL(outbuf,smb_vwv4,1);
144 SSVAL(outbuf,smb_vwv5,raw); /* readbraw and/or writebraw */
145 SSVAL(outbuf,smb_vwv10, TimeDiff(t)/60);
146 put_dos_date(outbuf,smb_vwv8,t);
148 return (smb_len(outbuf)+4);
154 generate the spnego negprot reply blob. Return the number of bytes used
156 static int negprot_spnego(char *p)
159 extern pstring global_myname;
161 const char *OIDs[] = {OID_NTLMSSP,
168 global_spnego_negotiated = True;
171 safe_strcpy((char *)guid, global_myname, 16);
172 strlower((char *)guid);
174 /* win2000 uses host$@REALM, which we will probably use eventually,
175 but for now this works */
176 asprintf(&principal, "HOST/%s@%s", guid, lp_realm());
177 blob = spnego_gen_negTokenInit(guid, OIDs, principal);
180 memcpy(p, blob.data, blob.length);
182 data_blob_free(&blob);
188 /****************************************************************************
189 reply for the nt protocol
190 ****************************************************************************/
191 static int reply_nt1(char *inbuf, char *outbuf)
193 /* dual names + lock_and_read + nt SMBs + remote API calls */
194 int capabilities = CAP_NT_FIND|CAP_LOCK_AND_READ|
195 CAP_LEVEL_II_OPLOCKS|CAP_STATUS32;
198 time_t t = time(NULL);
201 BOOL negotiate_spnego = False;
203 global_encrypted_passwords_negotiated = lp_encrypted_passwords();
205 /* do spnego in user level security if the client
206 supports it and we can do encrypted passwords */
208 if (global_encrypted_passwords_negotiated &&
209 (lp_security() != SEC_SHARE) &&
210 (SVAL(inbuf, smb_flg2) & FLAGS2_EXTENDED_SECURITY)) {
211 negotiate_spnego = True;
212 capabilities |= CAP_EXTENDED_SECURITY;
215 capabilities |= CAP_NT_SMBS|CAP_RPC_REMOTE_APIS;
217 if (lp_large_readwrite() && (SMB_OFF_T_BITS == 64)) {
218 capabilities |= CAP_LARGE_READX|CAP_LARGE_WRITEX|CAP_W2K_SMBS;
221 if (SMB_OFF_T_BITS == 64) {
222 capabilities |= CAP_LARGE_FILES;
225 if (lp_readraw() && lp_writeraw()) {
226 capabilities |= CAP_RAW_MODE;
229 /* allow for disabling unicode */
231 capabilities |= CAP_UNICODE;
235 capabilities |= CAP_DFS;
237 if (lp_security() >= SEC_USER) secword |= 1;
238 if (global_encrypted_passwords_negotiated) secword |= 2;
240 set_message(outbuf,17,0,True);
242 CVAL(outbuf,smb_vwv1) = secword;
244 Protocol = PROTOCOL_NT1;
246 SSVAL(outbuf,smb_vwv1+1,lp_maxmux()); /* maxmpx */
247 SSVAL(outbuf,smb_vwv2+1,1); /* num vcs */
248 SIVAL(outbuf,smb_vwv3+1,0xffff); /* max buffer. LOTS! */
249 SIVAL(outbuf,smb_vwv5+1,0x10000); /* raw size. full 64k */
250 SIVAL(outbuf,smb_vwv7+1,sys_getpid()); /* session key */
251 SIVAL(outbuf,smb_vwv9+1,capabilities); /* capabilities */
252 put_long_date(outbuf+smb_vwv11+1,t);
253 SSVALS(outbuf,smb_vwv15+1,TimeDiff(t)/60);
255 p = q = smb_buf(outbuf);
256 if (!negotiate_spnego) {
257 if (global_encrypted_passwords_negotiated) {
258 if (!make_auth_info_subsystem(&negprot_global_auth_info)) {
259 smb_panic("cannot make_negprot_global_auth_info!\n");
261 cryptkey = auth_get_challange(negprot_global_auth_info);
262 memcpy(p, cryptkey.data, 8);
263 data_blob_free(&cryptkey);
265 SSVALS(outbuf,smb_vwv16+1,8);
267 DEBUG(3,("not using SPNEGO\n"));
269 int len = negprot_spnego(p);
271 SSVALS(outbuf,smb_vwv16+1,len);
273 DEBUG(3,("using SPNEGO\n"));
275 p += srvstr_push(outbuf, p, global_myworkgroup, -1,
276 STR_UNICODE|STR_TERMINATE|STR_NOALIGN);
278 SSVAL(outbuf,smb_vwv17, p - q); /* length of challenge+domain strings */
279 set_message_end(outbuf, p);
281 return (smb_len(outbuf)+4);
284 /* these are the protocol lists used for auto architecture detection:
287 protocol [PC NETWORK PROGRAM 1.0]
288 protocol [XENIX CORE]
289 protocol [MICROSOFT NETWORKS 1.03]
291 protocol [Windows for Workgroups 3.1a]
294 protocol [NT LM 0.12]
297 protocol [PC NETWORK PROGRAM 1.0]
298 protocol [XENIX CORE]
299 protocol [MICROSOFT NETWORKS 1.03]
301 protocol [Windows for Workgroups 3.1a]
304 protocol [NT LM 0.12]
307 protocol [PC NETWORK PROGRAM 1.0]
309 protocol [Windows for Workgroups 3.1a]
312 protocol [NT LM 0.12]
315 protocol [PC NETWORK PROGRAM 1.0]
316 protocol [XENIX CORE]
323 * Modified to recognize the architecture of the remote machine better.
325 * This appears to be the matrix of which protocol is used by which
327 Protocol WfWg Win95 WinNT Win2K OS/2
328 PC NETWORK PROGRAM 1.0 1 1 1 1 1
330 MICROSOFT NETWORKS 3.0 2 2
332 MICROSOFT NETWORKS 1.03 3
335 Windows for Workgroups 3.1a 5 5 5 3
340 * tim@fsg.com 09/29/95
341 * Win2K added by matty 17/7/99
344 #define ARCH_WFWG 0x3 /* This is a fudge because WfWg is like Win95 */
345 #define ARCH_WIN95 0x2
346 #define ARCH_WINNT 0x4
347 #define ARCH_WIN2K 0xC /* Win2K is like NT */
348 #define ARCH_OS2 0x14 /* Again OS/2 is like NT */
349 #define ARCH_SAMBA 0x20
351 #define ARCH_ALL 0x3F
353 /* List of supported protocols, most desired first */
357 int (*proto_reply_fn)(char *, char *);
359 } supported_protocols[] = {
360 {"NT LANMAN 1.0", "NT1", reply_nt1, PROTOCOL_NT1},
361 {"NT LM 0.12", "NT1", reply_nt1, PROTOCOL_NT1},
362 {"LM1.2X002", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
363 {"Samba", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
364 {"DOS LM1.2X002", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
365 {"LANMAN1.0", "LANMAN1", reply_lanman1, PROTOCOL_LANMAN1},
366 {"MICROSOFT NETWORKS 3.0", "LANMAN1", reply_lanman1, PROTOCOL_LANMAN1},
367 {"MICROSOFT NETWORKS 1.03", "COREPLUS", reply_coreplus, PROTOCOL_COREPLUS},
368 {"PC NETWORK PROGRAM 1.0", "CORE", reply_corep, PROTOCOL_CORE},
373 /****************************************************************************
375 ****************************************************************************/
376 int reply_negprot(connection_struct *conn,
377 char *inbuf,char *outbuf, int dum_size,
380 int outsize = set_message(outbuf,1,0,True);
385 int bcc = SVAL(smb_buf(inbuf),-2);
387 START_PROFILE(SMBnegprot);
389 p = smb_buf(inbuf)+1;
390 while (p < (smb_buf(inbuf) + bcc))
393 DEBUG(3,("Requested protocol [%s]\n",p));
394 if (strcsequal(p,"Windows for Workgroups 3.1a"))
395 arch &= ( ARCH_WFWG | ARCH_WIN95 | ARCH_WINNT | ARCH_WIN2K );
396 else if (strcsequal(p,"DOS LM1.2X002"))
397 arch &= ( ARCH_WFWG | ARCH_WIN95 );
398 else if (strcsequal(p,"DOS LANMAN2.1"))
399 arch &= ( ARCH_WFWG | ARCH_WIN95 );
400 else if (strcsequal(p,"NT LM 0.12"))
401 arch &= ( ARCH_WIN95 | ARCH_WINNT | ARCH_WIN2K );
402 else if (strcsequal(p,"LANMAN2.1"))
403 arch &= ( ARCH_WINNT | ARCH_WIN2K | ARCH_OS2 );
404 else if (strcsequal(p,"LM1.2X002"))
405 arch &= ( ARCH_WINNT | ARCH_WIN2K | ARCH_OS2 );
406 else if (strcsequal(p,"MICROSOFT NETWORKS 1.03"))
408 else if (strcsequal(p,"XENIX CORE"))
409 arch &= ( ARCH_WINNT | ARCH_OS2 );
410 else if (strcsequal(p,"Samba")) {
420 set_remote_arch(RA_SAMBA);
423 set_remote_arch(RA_WFWG);
426 set_remote_arch(RA_WIN95);
429 if(SVAL(inbuf,smb_flg2)==FLAGS2_WIN2K_SIGNATURE)
430 set_remote_arch(RA_WIN2K);
432 set_remote_arch(RA_WINNT);
435 set_remote_arch(RA_WIN2K);
438 set_remote_arch(RA_OS2);
441 set_remote_arch(RA_UNKNOWN);
445 /* possibly reload - change of architecture */
446 reload_services(True);
448 /* Check for protocols, most desirable first */
449 for (protocol = 0; supported_protocols[protocol].proto_name; protocol++)
451 p = smb_buf(inbuf)+1;
453 if ((supported_protocols[protocol].protocol_level <= lp_maxprotocol()) &&
454 (supported_protocols[protocol].protocol_level >= lp_minprotocol()))
455 while (p < (smb_buf(inbuf) + bcc))
457 if (strequal(p,supported_protocols[protocol].proto_name))
466 SSVAL(outbuf,smb_vwv0,choice);
468 extern fstring remote_proto;
469 fstrcpy(remote_proto,supported_protocols[protocol].short_name);
470 reload_services(True);
471 outsize = supported_protocols[protocol].proto_reply_fn(inbuf, outbuf);
472 DEBUG(3,("Selected protocol %s\n",supported_protocols[protocol].proto_name));
475 DEBUG(0,("No protocol supported !\n"));
477 SSVAL(outbuf,smb_vwv0,choice);
479 DEBUG( 5, ( "negprot index=%d\n", choice ) );
481 END_PROFILE(SMBnegprot);