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.
24 extern int DEBUGLEVEL;
27 extern fstring global_myworkgroup;
28 extern fstring remote_machine;
29 extern pstring myhostname;
31 /****************************************************************************
32 reply for the core protocol
33 ****************************************************************************/
34 static int reply_corep(char *outbuf)
36 int outsize = set_message(outbuf,1,0,True);
38 Protocol = PROTOCOL_CORE;
44 /****************************************************************************
45 reply for the coreplus protocol
46 ****************************************************************************/
47 static int reply_coreplus(char *outbuf)
49 int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
50 int outsize = set_message(outbuf,13,0,True);
51 SSVAL(outbuf,smb_vwv5,raw); /* tell redirector we support
52 readbraw and writebraw (possibly) */
53 /* Reply, SMBlockread, SMBwritelock supported. */
54 SCVAL(outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
55 SSVAL(outbuf,smb_vwv1,0x1); /* user level security, don't encrypt */
57 Protocol = PROTOCOL_COREPLUS;
63 /****************************************************************************
64 reply for the lanman 1.0 protocol
65 ****************************************************************************/
66 static int reply_lanman1(char *outbuf)
68 int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
70 BOOL doencrypt = SMBENCRYPT();
71 time_t t = time(NULL);
73 if (lp_security()>=SEC_USER) secword |= 1;
74 if (doencrypt) secword |= 2;
76 set_message(outbuf,13,doencrypt?8:0,True);
77 SSVAL(outbuf,smb_vwv1,secword);
78 /* Create a token value and add it to the outgoing packet. */
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,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 BOOL doencrypt = SMBENCRYPT();
108 time_t t = time(NULL);
109 struct cli_state *cli = NULL;
113 if (lp_security() == SEC_SERVER) {
114 cli = server_cryptkey();
118 DEBUG(3,("using password server validation\n"));
119 doencrypt = ((cli->sec_mode & 2) != 0);
122 if (lp_security()>=SEC_USER) secword |= 1;
123 if (doencrypt) secword |= 2;
128 generate_next_challenge(cryptkey);
130 memcpy(cryptkey, cli->cryptkey, 8);
131 set_challenge(cli->cryptkey);
135 set_message(outbuf,13,crypt_len,True);
136 SSVAL(outbuf,smb_vwv1,secword);
137 SIVAL(outbuf,smb_vwv6,getpid());
139 memcpy(smb_buf(outbuf), cryptkey, 8);
141 Protocol = PROTOCOL_LANMAN2;
143 /* Reply, SMBlockread, SMBwritelock supported. */
144 SCVAL(outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
145 SSVAL(outbuf,smb_vwv2,max_recv);
146 SSVAL(outbuf,smb_vwv3,lp_maxmux());
147 SSVAL(outbuf,smb_vwv4,1);
148 SSVAL(outbuf,smb_vwv5,raw); /* readbraw and/or writebraw */
149 SSVAL(outbuf,smb_vwv10, TimeDiff(t)/60);
150 put_dos_date(outbuf,smb_vwv8,t);
152 return (smb_len(outbuf)+4);
156 /****************************************************************************
157 reply for the nt protocol
158 ****************************************************************************/
159 static int reply_nt1(char *outbuf)
161 /* dual names + lock_and_read + nt SMBs + remote API calls */
162 int capabilities = CAP_NT_FIND|CAP_LOCK_AND_READ|
163 (lp_nt_smb_support() ? CAP_NT_SMBS | CAP_RPC_REMOTE_APIS : 0) |
164 (SMB_OFF_T_BITS == 64 ? CAP_LARGE_FILES : 0);
168 other valid capabilities which we may support at some time...
169 CAP_LARGE_READX|CAP_STATUS32|CAP_LEVEL_II_OPLOCKS;
173 BOOL doencrypt = SMBENCRYPT();
174 time_t t = time(NULL);
176 struct cli_state *cli = NULL;
180 if (lp_security() == SEC_SERVER) {
181 cli = server_cryptkey();
185 DEBUG(3,("using password server validation\n"));
186 doencrypt = ((cli->sec_mode & 2) != 0);
192 generate_next_challenge(cryptkey);
194 memcpy(cryptkey, cli->cryptkey, 8);
195 set_challenge(cli->cryptkey);
199 if (lp_readraw() && lp_writeraw()) {
200 capabilities |= CAP_RAW_MODE;
203 if (lp_security() >= SEC_USER) secword |= 1;
204 if (doencrypt) secword |= 2;
206 /* decide where (if) to put the encryption challenge, and
207 follow it with the OEM'd domain name
209 data_len = crypt_len + strlen(global_myworkgroup) + 1;
211 set_message(outbuf,17,data_len,True);
212 pstrcpy(smb_buf(outbuf)+crypt_len, global_myworkgroup);
214 CVAL(outbuf,smb_vwv1) = secword;
215 SSVALS(outbuf,smb_vwv16+1,crypt_len);
217 memcpy(smb_buf(outbuf), cryptkey, 8);
219 Protocol = PROTOCOL_NT1;
221 SSVAL(outbuf,smb_vwv1+1,lp_maxmux()); /* maxmpx */
222 SSVAL(outbuf,smb_vwv2+1,1); /* num vcs */
223 SIVAL(outbuf,smb_vwv3+1,0xffff); /* max buffer. LOTS! */
224 SIVAL(outbuf,smb_vwv5+1,0x10000); /* raw size. full 64k */
225 SIVAL(outbuf,smb_vwv7+1,getpid()); /* session key */
226 SIVAL(outbuf,smb_vwv9+1,capabilities); /* capabilities */
227 put_long_date(outbuf+smb_vwv11+1,t);
228 SSVALS(outbuf,smb_vwv15+1,TimeDiff(t)/60);
229 SSVAL(outbuf,smb_vwv17,data_len); /* length of challenge+domain strings */
231 return (smb_len(outbuf)+4);
234 /* these are the protocol lists used for auto architecture detection:
237 protocol [PC NETWORK PROGRAM 1.0]
238 protocol [XENIX CORE]
239 protocol [MICROSOFT NETWORKS 1.03]
241 protocol [Windows for Workgroups 3.1a]
244 protocol [NT LM 0.12]
247 protocol [PC NETWORK PROGRAM 1.0]
248 protocol [XENIX CORE]
249 protocol [MICROSOFT NETWORKS 1.03]
251 protocol [Windows for Workgroups 3.1a]
254 protocol [NT LM 0.12]
257 protocol [PC NETWORK PROGRAM 1.0]
258 protocol [XENIX CORE]
265 * Modified to recognize the architecture of the remote machine better.
267 * This appears to be the matrix of which protocol is used by which
269 Protocol WfWg Win95 WinNT OS/2
270 PC NETWORK PROGRAM 1.0 1 1 1 1
272 MICROSOFT NETWORKS 3.0 2 2
274 MICROSOFT NETWORKS 1.03 3
277 Windows for Workgroups 3.1a 5 5 5
282 * tim@fsg.com 09/29/95
285 #define ARCH_WFWG 0x3 /* This is a fudge because WfWg is like Win95 */
286 #define ARCH_WIN95 0x2
287 #define ARCH_OS2 0xC /* Again OS/2 is like NT */
288 #define ARCH_WINNT 0x8
289 #define ARCH_SAMBA 0x10
291 #define ARCH_ALL 0x1F
293 /* List of supported protocols, most desired first */
297 int (*proto_reply_fn)(char *);
299 } supported_protocols[] = {
300 {"NT LANMAN 1.0", "NT1", reply_nt1, PROTOCOL_NT1},
301 {"NT LM 0.12", "NT1", reply_nt1, PROTOCOL_NT1},
302 {"LM1.2X002", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
303 {"Samba", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
304 {"DOS LM1.2X002", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
305 {"LANMAN1.0", "LANMAN1", reply_lanman1, PROTOCOL_LANMAN1},
306 {"MICROSOFT NETWORKS 3.0", "LANMAN1", reply_lanman1, PROTOCOL_LANMAN1},
307 {"MICROSOFT NETWORKS 1.03", "COREPLUS", reply_coreplus, PROTOCOL_COREPLUS},
308 {"PC NETWORK PROGRAM 1.0", "CORE", reply_corep, PROTOCOL_CORE},
313 /****************************************************************************
315 ****************************************************************************/
316 int reply_negprot(connection_struct *conn,
317 char *inbuf,char *outbuf, int dum_size,
320 int outsize = set_message(outbuf,1,0,True);
325 int bcc = SVAL(smb_buf(inbuf),-2);
328 p = smb_buf(inbuf)+1;
329 while (p < (smb_buf(inbuf) + bcc))
332 DEBUG(3,("Requested protocol [%s]\n",p));
333 if (strcsequal(p,"Windows for Workgroups 3.1a"))
334 arch &= ( ARCH_WFWG | ARCH_WIN95 | ARCH_WINNT );
335 else if (strcsequal(p,"DOS LM1.2X002"))
336 arch &= ( ARCH_WFWG | ARCH_WIN95 );
337 else if (strcsequal(p,"DOS LANMAN2.1"))
338 arch &= ( ARCH_WFWG | ARCH_WIN95 );
339 else if (strcsequal(p,"NT LM 0.12"))
340 arch &= ( ARCH_WIN95 | ARCH_WINNT );
341 else if (strcsequal(p,"LANMAN2.1"))
342 arch &= ( ARCH_WINNT | ARCH_OS2 );
343 else if (strcsequal(p,"LM1.2X002"))
344 arch &= ( ARCH_WINNT | ARCH_OS2 );
345 else if (strcsequal(p,"MICROSOFT NETWORKS 1.03"))
347 else if (strcsequal(p,"XENIX CORE"))
348 arch &= ( ARCH_WINNT | ARCH_OS2 );
349 else if (strcsequal(p,"Samba")) {
359 set_remote_arch(RA_SAMBA);
362 set_remote_arch(RA_WFWG);
365 set_remote_arch(RA_WIN95);
368 set_remote_arch(RA_WINNT);
371 set_remote_arch(RA_OS2);
374 set_remote_arch(RA_UNKNOWN);
378 /* possibly reload - change of architecture */
379 reload_services(True);
381 /* a special case to stop password server loops */
382 if (Index == 1 && strequal(remote_machine,myhostname) &&
383 (lp_security()==SEC_SERVER || lp_security()==SEC_DOMAIN))
384 exit_server("Password server loop!");
386 /* Check for protocols, most desirable first */
387 for (protocol = 0; supported_protocols[protocol].proto_name; protocol++)
389 p = smb_buf(inbuf)+1;
391 if (lp_maxprotocol() >= supported_protocols[protocol].protocol_level)
392 while (p < (smb_buf(inbuf) + bcc))
394 if (strequal(p,supported_protocols[protocol].proto_name))
403 SSVAL(outbuf,smb_vwv0,choice);
405 extern fstring remote_proto;
406 fstrcpy(remote_proto,supported_protocols[protocol].short_name);
407 reload_services(True);
408 outsize = supported_protocols[protocol].proto_reply_fn(outbuf);
409 DEBUG(3,("Selected protocol %s\n",supported_protocols[protocol].proto_name));
412 DEBUG(0,("No protocol supported !\n"));
414 SSVAL(outbuf,smb_vwv0,choice);
416 DEBUG( 5, ( "negprot index=%d\n", choice ) );