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;
30 extern dfs_internal dfs_struct;
32 /****************************************************************************
33 reply for the core protocol
34 ****************************************************************************/
35 static int reply_corep(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 *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 *outbuf)
69 int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
71 BOOL doencrypt = SMBENCRYPT();
72 time_t t = time(NULL);
74 if (lp_security()>=SEC_USER) secword |= 1;
75 if (doencrypt) secword |= 2;
77 set_message(outbuf,13,doencrypt?8:0,True);
78 SSVAL(outbuf,smb_vwv1,secword);
79 /* Create a token value and add it to the outgoing packet. */
81 generate_next_challenge(smb_buf(outbuf));
83 Protocol = PROTOCOL_LANMAN1;
85 /* Reply, SMBlockread, SMBwritelock supported. */
86 SCVAL(outbuf,smb_flg,FLAG_REPLY|FLAG_SUPPORT_LOCKREAD);
87 SSVAL(outbuf,smb_vwv2,max_recv);
88 SSVAL(outbuf,smb_vwv3,lp_maxmux()); /* maxmux */
89 SSVAL(outbuf,smb_vwv4,1);
90 SSVAL(outbuf,smb_vwv5,raw); /* tell redirector we support
91 readbraw writebraw (possibly) */
92 SIVAL(outbuf,smb_vwv6,getpid());
93 SSVAL(outbuf,smb_vwv10, TimeDiff(t)/60);
95 put_dos_date(outbuf,smb_vwv8,t);
97 return (smb_len(outbuf)+4);
101 /****************************************************************************
102 reply for the lanman 2.0 protocol
103 ****************************************************************************/
104 static int reply_lanman2(char *outbuf)
106 int raw = (lp_readraw()?1:0) | (lp_writeraw()?2:0);
108 BOOL doencrypt = SMBENCRYPT();
109 time_t t = time(NULL);
110 struct cli_state *cli = NULL;
114 if (lp_security() == SEC_SERVER) {
115 cli = server_cryptkey();
119 DEBUG(3,("using password server validation\n"));
120 doencrypt = ((cli->sec_mode & 2) != 0);
123 if (lp_security()>=SEC_USER) secword |= 1;
124 if (doencrypt) secword |= 2;
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,getpid());
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 */
164 BOOL doencrypt = SMBENCRYPT();
165 time_t t = time(NULL);
167 struct cli_state *cli = NULL;
171 int capabilities = CAP_NT_FIND|CAP_LOCK_AND_READ;
173 if (lp_nt_smb_support())
175 capabilities |= CAP_NT_SMBS | CAP_RPC_REMOTE_APIS;
178 if (SMB_OFF_T_BITS == 64)
180 capabilities |= CAP_LARGE_FILES;
183 if (dfs_struct.ready==True)
185 capabilities |= CAP_DFS;
189 other valid capabilities which we may support at some time...
190 CAP_LARGE_READX|CAP_STATUS32|CAP_LEVEL_II_OPLOCKS;
193 if (lp_security() == SEC_SERVER)
195 cli = server_cryptkey();
199 DEBUG(3,("using password server validation\n"));
200 doencrypt = ((cli->sec_mode & 2) != 0);
206 generate_next_challenge(cryptkey);
208 memcpy(cryptkey, cli->cryptkey, 8);
209 set_challenge(cli->cryptkey);
213 if (lp_readraw() && lp_writeraw()) {
214 capabilities |= CAP_RAW_MODE;
217 if (lp_security() >= SEC_USER) secword |= 1;
218 if (doencrypt) secword |= 2;
220 /* decide where (if) to put the encryption challenge, and
221 follow it with the OEM'd domain name in Unicode.
223 data_len = crypt_len + (strlen(global_myworkgroup)+1)*2;
225 set_message(outbuf,17,data_len,True);
226 ascii_to_unibuf(smb_buf(outbuf)+crypt_len, global_myworkgroup,
227 (strlen(global_myworkgroup)+1)*2);
229 CVAL(outbuf,smb_vwv1) = secword;
230 SSVALS(outbuf,smb_vwv16+1,crypt_len);
232 memcpy(smb_buf(outbuf), cryptkey, 8);
234 Protocol = PROTOCOL_NT1;
236 SSVAL(outbuf,smb_vwv1+1,lp_maxmux()); /* maxmpx */
237 SSVAL(outbuf,smb_vwv2+1,1); /* num vcs */
238 SIVAL(outbuf,smb_vwv3+1,0xffff); /* max buffer. LOTS! */
239 SIVAL(outbuf,smb_vwv5+1,0x10000); /* raw size. full 64k */
240 SIVAL(outbuf,smb_vwv7+1,getpid()); /* session key */
241 SIVAL(outbuf,smb_vwv9+1,capabilities); /* capabilities */
242 put_long_date(outbuf+smb_vwv11+1,t);
243 SSVALS(outbuf,smb_vwv15+1,TimeDiff(t)/60);
244 SSVAL(outbuf,smb_vwv17,data_len); /* length of challenge+domain strings */
246 return (smb_len(outbuf)+4);
249 /* these are the protocol lists used for auto architecture detection:
252 protocol [PC NETWORK PROGRAM 1.0]
253 protocol [XENIX CORE]
254 protocol [MICROSOFT NETWORKS 1.03]
256 protocol [Windows for Workgroups 3.1a]
259 protocol [NT LM 0.12]
262 protocol [PC NETWORK PROGRAM 1.0]
263 protocol [XENIX CORE]
264 protocol [MICROSOFT NETWORKS 1.03]
266 protocol [Windows for Workgroups 3.1a]
269 protocol [NT LM 0.12]
272 protocol [PC NETWORK PROGRAM 1.0]
273 protocol [XENIX CORE]
280 * Modified to recognize the architecture of the remote machine better.
282 * This appears to be the matrix of which protocol is used by which
284 Protocol WfWg Win95 WinNT OS/2
285 PC NETWORK PROGRAM 1.0 1 1 1 1
287 MICROSOFT NETWORKS 3.0 2 2
289 MICROSOFT NETWORKS 1.03 3
292 Windows for Workgroups 3.1a 5 5 5
297 * tim@fsg.com 09/29/95
300 #define ARCH_WFWG 0x3 /* This is a fudge because WfWg is like Win95 */
301 #define ARCH_WIN95 0x2
302 #define ARCH_OS2 0xC /* Again OS/2 is like NT */
303 #define ARCH_WINNT 0x8
304 #define ARCH_SAMBA 0x10
306 #define ARCH_ALL 0x1F
308 /* List of supported protocols, most desired first */
312 int (*proto_reply_fn)(char *);
314 } supported_protocols[] = {
315 {"NT LANMAN 1.0", "NT1", reply_nt1, PROTOCOL_NT1},
316 {"NT LM 0.12", "NT1", reply_nt1, PROTOCOL_NT1},
317 {"LM1.2X002", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
318 {"Samba", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
319 {"DOS LM1.2X002", "LANMAN2", reply_lanman2, PROTOCOL_LANMAN2},
320 {"LANMAN1.0", "LANMAN1", reply_lanman1, PROTOCOL_LANMAN1},
321 {"MICROSOFT NETWORKS 3.0", "LANMAN1", reply_lanman1, PROTOCOL_LANMAN1},
322 {"MICROSOFT NETWORKS 1.03", "COREPLUS", reply_coreplus, PROTOCOL_COREPLUS},
323 {"PC NETWORK PROGRAM 1.0", "CORE", reply_corep, PROTOCOL_CORE},
328 /****************************************************************************
330 ****************************************************************************/
331 int reply_negprot(connection_struct *conn,
332 char *inbuf,char *outbuf, int dum_size,
335 int outsize = set_message(outbuf,1,0,True);
340 int bcc = SVAL(smb_buf(inbuf),-2);
343 p = smb_buf(inbuf)+1;
344 while (p < (smb_buf(inbuf) + bcc))
347 DEBUG(3,("Requested protocol [%s]\n",p));
348 if (strcsequal(p,"Windows for Workgroups 3.1a"))
349 arch &= ( ARCH_WFWG | ARCH_WIN95 | ARCH_WINNT );
350 else if (strcsequal(p,"DOS LM1.2X002"))
351 arch &= ( ARCH_WFWG | ARCH_WIN95 );
352 else if (strcsequal(p,"DOS LANMAN2.1"))
353 arch &= ( ARCH_WFWG | ARCH_WIN95 );
354 else if (strcsequal(p,"NT LM 0.12"))
355 arch &= ( ARCH_WIN95 | ARCH_WINNT );
356 else if (strcsequal(p,"LANMAN2.1"))
357 arch &= ( ARCH_WINNT | ARCH_OS2 );
358 else if (strcsequal(p,"LM1.2X002"))
359 arch &= ( ARCH_WINNT | ARCH_OS2 );
360 else if (strcsequal(p,"MICROSOFT NETWORKS 1.03"))
362 else if (strcsequal(p,"XENIX CORE"))
363 arch &= ( ARCH_WINNT | ARCH_OS2 );
364 else if (strcsequal(p,"Samba")) {
374 set_remote_arch(RA_SAMBA);
377 set_remote_arch(RA_WFWG);
380 set_remote_arch(RA_WIN95);
383 set_remote_arch(RA_WINNT);
386 set_remote_arch(RA_OS2);
389 set_remote_arch(RA_UNKNOWN);
393 /* possibly reload - change of architecture */
394 reload_services(True);
396 /* a special case to stop password server loops */
397 if (Index == 1 && strequal(remote_machine,myhostname) &&
398 (lp_security()==SEC_SERVER || lp_security()==SEC_DOMAIN))
399 exit_server("Password server loop!");
401 /* Check for protocols, most desirable first */
402 for (protocol = 0; supported_protocols[protocol].proto_name; protocol++)
404 p = smb_buf(inbuf)+1;
406 if (lp_maxprotocol() >= supported_protocols[protocol].protocol_level)
407 while (p < (smb_buf(inbuf) + bcc))
409 if (strequal(p,supported_protocols[protocol].proto_name))
418 SSVAL(outbuf,smb_vwv0,choice);
420 extern fstring remote_proto;
421 fstrcpy(remote_proto,supported_protocols[protocol].short_name);
422 reload_services(True);
423 outsize = supported_protocols[protocol].proto_reply_fn(outbuf);
424 DEBUG(3,("Selected protocol %s\n",supported_protocols[protocol].proto_name));
427 DEBUG(0,("No protocol supported !\n"));
429 SSVAL(outbuf,smb_vwv0,choice);
431 DEBUG( 5, ( "negprot index=%d\n", choice ) );