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NEX-1643 dtrace provider for smbsrv
Also illumos 1841:
DTrace smb provider was mis-implemented, doesn't exist.
Add back handlers for read/write raw, so that
legacy dtrace consumers can find the probes.
Kill extra arg in smb_negotiate
Fix missing "done" probe with smb_notify
Add example consumer: smb-trace.d
fix soi_pid
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--- old/usr/src/uts/common/fs/smbsrv/smb_negotiate.c
+++ new/usr/src/uts/common/fs/smbsrv/smb_negotiate.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 * Copyright 2016 Nexenta Systems, Inc. All rights reserved.
24 24 */
25 25
26 26 /*
27 27 * Notes on the virtual circuit (VC) values in the SMB Negotiate
28 28 * response and SessionSetupAndx request.
29 29 *
30 30 * A virtual circuit (VC) represents a connection between a client and a
31 31 * server using a reliable, session oriented transport protocol, such as
32 32 * NetBIOS or TCP/IP. Originally, each SMB session was restricted to a
33 33 * single underlying transport connection, i.e. a single NetBIOS session,
34 34 * which limited performance for raw data transfers.
35 35 *
36 36 * The intention behind multiple VCs was to improve performance by
37 37 * allowing parallelism over each NetBIOS session. For example, raw data
38 38 * could be transmitted using a different VC from other types of SMB
39 39 * requests to remove the interleaving restriction while a raw transfer
40 40 * is in progress. So the MaxNumberVcs field was added to the negotiate
41 41 * response to make the number of VCs configurable and to allow servers
42 42 * to specify how many they were prepared to support per session
43 43 * connection. This turned out to be difficult to manage and, with
44 44 * technology improvements, it has become obsolete.
45 45 *
46 46 * Servers should set the MaxNumberVcs value in the Negotiate response
47 47 * to 1. Clients should probably ignore it. If a server receives a
48 48 * SessionSetupAndx with a VC value of 0, it should close all other
49 49 * VCs to that client. If it receives a non-zero VC, it should leave
50 50 * other VCs in tact.
51 51 *
52 52 */
53 53
54 54 /*
55 55 * SMB: negotiate
56 56 *
57 57 * Client Request Description
58 58 * ============================ =======================================
59 59 *
60 60 * UCHAR WordCount; Count of parameter words = 0
61 61 * USHORT ByteCount; Count of data bytes; min = 2
62 62 * struct {
63 63 * UCHAR BufferFormat; 0x02 -- Dialect
64 64 * UCHAR DialectName[]; ASCII null-terminated string
65 65 * } Dialects[];
66 66 *
67 67 * The Client sends a list of dialects that it can communicate with. The
68 68 * response is a selection of one of those dialects (numbered 0 through n)
69 69 * or -1 (hex FFFF) indicating that none of the dialects were acceptable.
70 70 * The negotiate message is binding on the virtual circuit and must be
71 71 * sent. One and only one negotiate message may be sent, subsequent
72 72 * negotiate requests will be rejected with an error response and no action
73 73 * will be taken.
74 74 *
75 75 * The protocol does not impose any particular structure to the dialect
76 76 * strings. Implementors of particular protocols may choose to include,
77 77 * for example, version numbers in the string.
78 78 *
79 79 * If the server does not understand any of the dialect strings, or if PC
80 80 * NETWORK PROGRAM 1.0 is the chosen dialect, the response format is
81 81 *
82 82 * Server Response Description
83 83 * ============================ =======================================
84 84 *
85 85 * UCHAR WordCount; Count of parameter words = 1
86 86 * USHORT DialectIndex; Index of selected dialect
87 87 * USHORT ByteCount; Count of data bytes = 0
88 88 *
89 89 * If the chosen dialect is greater than core up to and including
90 90 * LANMAN2.1, the protocol response format is
91 91 *
92 92 * Server Response Description
93 93 * ============================ =======================================
94 94 *
95 95 * UCHAR WordCount; Count of parameter words = 13
96 96 * USHORT DialectIndex; Index of selected dialect
97 97 * USHORT SecurityMode; Security mode:
98 98 * bit 0: 0 = share, 1 = user
99 99 * bit 1: 1 = use challenge/response
100 100 * authentication
101 101 * USHORT MaxBufferSize; Max transmit buffer size (>= 1024)
102 102 * USHORT MaxMpxCount; Max pending multiplexed requests
103 103 * USHORT MaxNumberVcs; Max VCs between client and server
104 104 * USHORT RawMode; Raw modes supported:
105 105 * bit 0: 1 = Read Raw supported
106 106 * bit 1: 1 = Write Raw supported
107 107 * ULONG SessionKey; Unique token identifying this session
108 108 * SMB_TIME ServerTime; Current time at server
109 109 * SMB_DATE ServerDate; Current date at server
110 110 * USHORT ServerTimeZone; Current time zone at server
111 111 * USHORT EncryptionKeyLength; MBZ if this is not LM2.1
112 112 * USHORT Reserved; MBZ
113 113 * USHORT ByteCount Count of data bytes
114 114 * UCHAR EncryptionKey[]; The challenge encryption key
115 115 * STRING PrimaryDomain[]; The server's primary domain
116 116 *
117 117 * MaxBufferSize is the size of the largest message which the client can
118 118 * legitimately send to the server
119 119 *
120 120 * If bit0 of the Flags field is set in the negotiate response, this
121 121 * indicates the server supports the SMB_COM_LOCK_AND_READ and
122 122 * SMB_COM_WRITE_AND_UNLOCK client requests.
123 123 *
124 124 * If the SecurityMode field indicates the server is running in user mode,
125 125 * the client must send appropriate SMB_COM_SESSION_SETUP_ANDX requests
126 126 * before the server will allow the client to access resources. If the
127 127 * SecurityMode fields indicates the client should use challenge/response
128 128 * authentication, the client should use the authentication mechanism
129 129 * specified in section 2.10.
130 130 *
131 131 * Clients should submit no more than MaxMpxCount distinct unanswered SMBs
132 132 * to the server when using multiplexed reads or writes (see sections 5.13
133 133 * and 5.25)
134 134 *
135 135 * Clients using the "MICROSOFT NETWORKS 1.03" dialect use a different
136 136 * form of raw reads than documented here, and servers are better off
137 137 * setting RawMode in this response to 0 for such sessions.
138 138 *
139 139 * If the negotiated dialect is "DOS LANMAN2.1" or "LANMAN2.1", then
140 140 * PrimaryDomain string should be included in this response.
141 141 *
142 142 * If the negotiated dialect is NT LM 0.12, the response format is
143 143 *
144 144 * Server Response Description
145 145 * ========================== =========================================
146 146 *
147 147 * UCHAR WordCount; Count of parameter words = 17
148 148 * USHORT DialectIndex; Index of selected dialect
149 149 * UCHAR SecurityMode; Security mode:
150 150 * bit 0: 0 = share, 1 = user
151 151 * bit 1: 1 = encrypt passwords
152 152 * USHORT MaxMpxCount; Max pending multiplexed requests
153 153 * USHORT MaxNumberVcs; Max VCs between client and server
154 154 * ULONG MaxBufferSize; Max transmit buffer size
155 155 * ULONG MaxRawSize; Maximum raw buffer size
156 156 * ULONG SessionKey; Unique token identifying this session
157 157 * ULONG Capabilities; Server capabilities
158 158 * ULONG SystemTimeLow; System (UTC) time of the server (low).
159 159 * ULONG SystemTimeHigh; System (UTC) time of the server (high).
160 160 * USHORT ServerTimeZone; Time zone of server (min from UTC)
161 161 * UCHAR EncryptionKeyLength; Length of encryption key.
162 162 * USHORT ByteCount; Count of data bytes
163 163 * UCHAR EncryptionKey[]; The challenge encryption key
164 164 * UCHAR OemDomainName[]; The name of the domain (in OEM chars)
165 165 *
166 166 * In addition to the definitions above, MaxBufferSize is the size of the
167 167 * largest message which the client can legitimately send to the server.
168 168 * If the client is using a connectionless protocol, MaxBufferSize must be
169 169 * set to the smaller of the server's internal buffer size and the amount
170 170 * of data which can be placed in a response packet.
171 171 *
172 172 * MaxRawSize specifies the maximum message size the server can send or
173 173 * receive for SMB_COM_WRITE_RAW or SMB_COM_READ_RAW.
174 174 *
175 175 * Connectionless clients must set Sid to 0 in the SMB request header.
176 176 *
177 177 * Capabilities allows the server to tell the client what it supports.
178 178 * The bit definitions defined in smb.h. Bit 0x2000 used to be set in
179 179 * the negotiate response capabilities but it caused problems with
180 180 * Windows 2000. It is probably not valid, it doesn't appear in the
181 181 * CIFS spec.
182 182 *
183 183 * 4.1.1.1 Errors
184 184 *
185 185 * SUCCESS/SUCCESS
186 186 * ERRSRV/ERRerror
187 187 */
188 188 #include <sys/types.h>
189 189 #include <sys/socket.h>
190 190 #include <netinet/in.h>
191 191 #include <smbsrv/smb_kproto.h>
192 192 #include <smbsrv/smbinfo.h>
193 193
194 194 static const smb_xlate_t smb_dialect[] = {
195 195 { DIALECT_UNKNOWN, "DIALECT_UNKNOWN" },
196 196 { PC_NETWORK_PROGRAM_1_0, "PC NETWORK PROGRAM 1.0" },
197 197 { PCLAN1_0, "PCLAN1.0" },
198 198 { MICROSOFT_NETWORKS_1_03, "MICROSOFT NETWORKS 1.03" },
199 199 { MICROSOFT_NETWORKS_3_0, "MICROSOFT NETWORKS 3.0" },
200 200 { LANMAN1_0, "LANMAN1.0" },
201 201 { LM1_2X002, "LM1.2X002" },
202 202 { DOS_LM1_2X002, "DOS LM1.2X002" },
203 203 { DOS_LANMAN2_1, "DOS LANMAN2.1" },
204 204 { LANMAN2_1, "LANMAN2.1" },
205 205 { Windows_for_Workgroups_3_1a, "Windows for Workgroups 3.1a" },
206 206 { NT_LM_0_12, "NT LM 0.12" },
207 207 { DIALECT_SMB2002, "SMB 2.002" },
208 208 { DIALECT_SMB2XXX, "SMB 2.???" },
209 209 };
210 210 static int smb_ndialects = sizeof (smb_dialect) / sizeof (smb_dialect[0]);
211 211
212 212 /*
213 213 * Maximum buffer size for DOS: chosen to be the same as NT.
214 214 * Do not change this value, DOS is very sensitive to it.
215 215 */
216 216 #define SMB_DOS_MAXBUF 0x1104
217 217
218 218 /*
219 219 * The DOS TCP rcvbuf is set to 8700 because DOS 6.1 seems to have problems
220 220 * with other values. DOS 6.1 seems to depend on a window value of 8700 to
221 221 * send the next set of data. If we return a window value of 40KB, after
222 222 * sending 8700 bytes of data, it will start the next set of data from 40KB
223 223 * instead of 8.7k. Why 8.7k? We have no idea; it is the value that NT uses.
224 224 * September 2000.
225 225 *
226 226 * IR104720 Increased smb_nt_tcp_rcvbuf from 40KB to just under 1MB to allow
227 227 * for a larger TCP window sizei based on observations of Windows 2000 and
228 228 * performance testing. March 2003.
229 229 */
230 230 static uint32_t smb_dos_tcp_rcvbuf = 8700;
231 231 static uint32_t smb_nt_tcp_rcvbuf = 1048560; /* scale factor of 4 */
232 232
233 233 /*
234 234 * Maximum number of simultaneously pending SMB requests allowed on
235 235 * one connection. This is like "credits" in SMB2, but SMB1 uses a
236 236 * fixed limit, having no way to request an increase like SMB2 does.
237 237 * Note: Some older clients only handle the low byte of this value,
238 238 * so this value should be less than 256.
239 239 */
240 240 static uint16_t smb_maxmpxcount = 64;
241 241
242 242 static int smb_xlate_dialect(const char *);
243 243
244 244 /*
245 245 * "Capabilities" offered by SMB1 Negotiate Protocol.
246 246 * See smb.h for descriptions.
247 247 *
248 248 * CAP_RAW_MODE, CAP_MPX_MODE are obsolete.
249 249 * UNICODE support is required for long share names,
250 250 * long file names and streams.
251 251 *
252 252 * For testing, one can patch this, i.e. remove the high bit to
253 253 * temporarily disable extended security, etc.
254 254 */
255 255 uint32_t smb1srv_capabilities =
256 256 CAP_UNICODE |
257 257 CAP_LARGE_FILES |
258 258 CAP_NT_SMBS |
259 259 CAP_RPC_REMOTE_APIS |
260 260 CAP_STATUS32 |
261 261 CAP_LEVEL_II_OPLOCKS |
262 262 CAP_LOCK_AND_READ |
263 263 CAP_NT_FIND |
264 264 CAP_DFS |
265 265 CAP_INFOLEVEL_PASSTHRU |
266 266 CAP_LARGE_READX |
267 267 CAP_LARGE_WRITEX |
268 268 CAP_EXTENDED_SECURITY;
269 269
270 270 /*
271 271 * SMB Negotiate gets special handling. This is called directly by
272 272 * the reader thread (see smbsr_newrq_initial) with what _should_ be
273 273 * an SMB1 Negotiate. Only the "\ffSMB" header has been checked
274 274 * when this is called, so this needs to check the SMB command,
275 275 * if it's Negotiate execute it, then send the reply, etc.
276 276 *
277 277 * Since this is called directly from the reader thread, we
278 278 * know this is the only thread currently using this session.
279 279 * This has to duplicate some of what smb1sr_work does as a
280 280 * result of bypassing the normal dispatch mechanism.
281 281 *
282 282 * The caller always frees this request.
283 283 */
284 284 int
285 285 smb1_newrq_negotiate(smb_request_t *sr)
286 286 {
287 287 smb_sdrc_t sdrc;
288 288 uint16_t pid_hi, pid_lo;
289 289
290 290 /*
291 291 * Decode the header
292 292 */
293 293 if (smb_mbc_decodef(&sr->command, SMB_HEADER_ED_FMT,
294 294 &sr->smb_com,
295 295 &sr->smb_rcls,
296 296 &sr->smb_reh,
297 297 &sr->smb_err,
298 298 &sr->smb_flg,
299 299 &sr->smb_flg2,
300 300 &pid_hi,
301 301 sr->smb_sig,
302 302 &sr->smb_tid,
303 303 &pid_lo,
304 304 &sr->smb_uid,
305 305 &sr->smb_mid) != 0)
306 306 return (-1);
307 307 if (sr->smb_com != SMB_COM_NEGOTIATE)
308 308 return (-1);
309 309
310 310 sr->smb_pid = (pid_hi << 16) | pid_lo;
311 311
312 312 /*
313 313 * Reserve space for the reply header.
314 314 */
315 315 (void) smb_mbc_encodef(&sr->reply, "#.", SMB_HEADER_LEN);
316 316 sr->first_smb_com = sr->smb_com;
317 317
318 318 if (smb_mbc_decodef(&sr->command, "b", &sr->smb_wct) != 0)
319 319 return (-1);
320 320 (void) MBC_SHADOW_CHAIN(&sr->smb_vwv, &sr->command,
321 321 sr->command.chain_offset, sr->smb_wct * 2);
322 322
323 323 if (smb_mbc_decodef(&sr->command, "#.w", sr->smb_wct*2, &sr->smb_bcc))
324 324 return (-1);
325 325 (void) MBC_SHADOW_CHAIN(&sr->smb_data, &sr->command,
326 326 sr->command.chain_offset, sr->smb_bcc);
327 327
328 328 sr->command.chain_offset += sr->smb_bcc;
329 329 if (sr->command.chain_offset > sr->command.max_bytes)
330 330 return (-1);
331 331
332 332 /* Store pointers for later */
333 333 sr->cur_reply_offset = sr->reply.chain_offset;
334 334
335 335 sdrc = smb_pre_negotiate(sr);
336 336 if (sdrc == SDRC_SUCCESS)
337 337 sdrc = smb_com_negotiate(sr);
338 338 smb_post_negotiate(sr);
339 339
340 340 if (sdrc != SDRC_NO_REPLY)
341 341 smbsr_send_reply(sr);
342 342 if (sdrc == SDRC_DROP_VC)
343 343 return (-1);
344 344
345 345 return (0);
346 346 }
347 347
348 348 smb_sdrc_t
349 349 smb_pre_negotiate(smb_request_t *sr)
350 350 {
351 351 smb_kmod_cfg_t *skc;
352 352 smb_arg_negotiate_t *negprot;
353 353 int dialect;
354 354 int pos;
355 355 int rc = 0;
356 356
357 357 skc = &sr->session->s_cfg;
358 358 negprot = smb_srm_zalloc(sr, sizeof (smb_arg_negotiate_t));
359 359 negprot->ni_index = -1;
360 360 sr->sr_negprot = negprot;
361 361
362 362 for (pos = 0; smbsr_decode_data_avail(sr); pos++) {
363 363 if (smbsr_decode_data(sr, "%L", sr, &negprot->ni_name) != 0) {
364 364 smbsr_error(sr, 0, ERRSRV, ERRerror);
365 365 rc = -1;
366 366 break;
367 367 }
368 368
369 369 if ((dialect = smb_xlate_dialect(negprot->ni_name)) < 0)
370 370 continue;
371 371
372 372 /*
373 373 * Conditionally recognize the SMB2 dialects.
374 374 */
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375 375 if (dialect >= DIALECT_SMB2002 &&
376 376 skc->skc_max_protocol < SMB_VERS_2_BASE)
377 377 continue;
378 378
379 379 if (negprot->ni_dialect < dialect) {
380 380 negprot->ni_dialect = dialect;
381 381 negprot->ni_index = pos;
382 382 }
383 383 }
384 384
385 - DTRACE_SMB_2(op__Negotiate__start, smb_request_t *, sr,
386 - smb_arg_negotiate_t, negprot);
385 + DTRACE_SMB_1(op__Negotiate__start, smb_request_t *, sr);
387 386
388 387 return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
389 388 }
390 389
391 390 void
392 391 smb_post_negotiate(smb_request_t *sr)
393 392 {
394 393 smb_arg_negotiate_t *negprot = sr->sr_negprot;
395 394
396 - DTRACE_SMB_2(op__Negotiate__done, smb_request_t *, sr,
397 - smb_arg_negotiate_t, negprot);
395 + DTRACE_SMB_1(op__Negotiate__done, smb_request_t *, sr);
398 396
399 397 bzero(negprot, sizeof (smb_arg_negotiate_t));
400 398 }
401 399
402 400 smb_sdrc_t
403 401 smb_com_negotiate(smb_request_t *sr)
404 402 {
405 403 smb_session_t *session = sr->session;
406 404 smb_arg_negotiate_t *negprot = sr->sr_negprot;
407 405 uint16_t secmode;
408 406 uint32_t sesskey;
409 407 char *nbdomain;
410 408 uint8_t *wcbuf;
411 409 int wclen;
412 410 smb_msgbuf_t mb;
413 411 int rc;
414 412
415 413 if (session->s_state != SMB_SESSION_STATE_ESTABLISHED) {
416 414 /* The protocol has already been negotiated. */
417 415 smbsr_error(sr, 0, ERRSRV, ERRerror);
418 416 return (SDRC_ERROR);
419 417 }
420 418
421 419 /*
422 420 * Special case for negotiating SMB2 from SMB1. The client
423 421 * includes the "SMB 2..." dialects in the SMB1 negotiate,
424 422 * and if SMB2 is enabled, we choose one of those and then
425 423 * send an SMB2 reply to that SMB1 request. Yes, it's very
426 424 * strange, but this SMB1 request can have an SMB2 reply!
427 425 * To accomplish this, we let the SMB2 code send the reply
428 426 * and return the special code SDRC_NO_REPLY to the SMB1
429 427 * dispatch logic so it will NOT send an SMB1 reply.
430 428 * (Or possibly send an SMB1 error reply.)
431 429 */
432 430 if (negprot->ni_dialect >= DIALECT_SMB2002) {
433 431 rc = smb1_negotiate_smb2(sr);
434 432 ASSERT(rc == SDRC_NO_REPLY ||
435 433 rc == SDRC_DROP_VC || rc == SDRC_ERROR);
436 434 return (rc);
437 435 }
438 436
439 437 session->srv_secmode = NEGOTIATE_ENCRYPT_PASSWORDS |
440 438 NEGOTIATE_USER_SECURITY;
441 439 secmode = session->srv_secmode;
442 440 sesskey = session->sesskey;
443 441
444 442 negprot->ni_servertime.tv_sec = gethrestime_sec();
445 443 negprot->ni_servertime.tv_nsec = 0;
446 444 negprot->ni_tzcorrection = sr->sr_gmtoff / 60;
447 445 negprot->ni_maxmpxcount = smb_maxmpxcount;
448 446 negprot->ni_keylen = SMB_CHALLENGE_SZ;
449 447 bcopy(&session->challenge_key, negprot->ni_key, SMB_CHALLENGE_SZ);
450 448 nbdomain = sr->sr_cfg->skc_nbdomain;
451 449
452 450 negprot->ni_capabilities = smb1srv_capabilities;
453 451
454 452 switch (negprot->ni_dialect) {
455 453 case PC_NETWORK_PROGRAM_1_0: /* core */
456 454 (void) ksocket_setsockopt(session->sock, SOL_SOCKET,
457 455 SO_RCVBUF, (const void *)&smb_dos_tcp_rcvbuf,
458 456 sizeof (smb_dos_tcp_rcvbuf), CRED());
459 457 rc = smbsr_encode_result(sr, 1, 0, "bww", 1,
460 458 negprot->ni_index, 0);
461 459 break;
462 460
463 461 case Windows_for_Workgroups_3_1a:
464 462 case PCLAN1_0:
465 463 case MICROSOFT_NETWORKS_1_03:
466 464 case MICROSOFT_NETWORKS_3_0:
467 465 case LANMAN1_0:
468 466 case LM1_2X002:
469 467 case DOS_LM1_2X002:
470 468 (void) ksocket_setsockopt(session->sock, SOL_SOCKET,
471 469 SO_RCVBUF, (const void *)&smb_dos_tcp_rcvbuf,
472 470 sizeof (smb_dos_tcp_rcvbuf), CRED());
473 471 sr->smb_flg |= SMB_FLAGS_LOCK_AND_READ_OK;
474 472 rc = smbsr_encode_result(sr, 13, VAR_BCC,
475 473 "bwwwwwwlYww2.w#c",
476 474 13, /* wct */
477 475 negprot->ni_index, /* dialect index */
478 476 secmode, /* security mode */
479 477 SMB_DOS_MAXBUF, /* max buffer size */
480 478 1, /* max MPX */
481 479 1, /* max VCs */
482 480 0, /* read/write raw */
483 481 sesskey, /* session key */
484 482 negprot->ni_servertime.tv_sec, /* server date/time */
485 483 negprot->ni_tzcorrection,
486 484 (uint16_t)negprot->ni_keylen, /* encryption key length */
487 485 /* reserved field handled 2. */
488 486 VAR_BCC,
489 487 (int)negprot->ni_keylen,
490 488 negprot->ni_key); /* encryption key */
491 489 break;
492 490
493 491 case DOS_LANMAN2_1:
494 492 case LANMAN2_1:
495 493 (void) ksocket_setsockopt(session->sock, SOL_SOCKET,
496 494 SO_RCVBUF, (const void *)&smb_dos_tcp_rcvbuf,
497 495 sizeof (smb_dos_tcp_rcvbuf), CRED());
498 496 sr->smb_flg |= SMB_FLAGS_LOCK_AND_READ_OK;
499 497 rc = smbsr_encode_result(sr, 13, VAR_BCC,
500 498 "bwwwwwwlYww2.w#cs",
501 499 13, /* wct */
502 500 negprot->ni_index, /* dialect index */
503 501 secmode, /* security mode */
504 502 SMB_DOS_MAXBUF, /* max buffer size */
505 503 1, /* max MPX */
506 504 1, /* max VCs */
507 505 0, /* read/write raw */
508 506 sesskey, /* session key */
509 507 negprot->ni_servertime.tv_sec, /* server date/time */
510 508 negprot->ni_tzcorrection,
511 509 (uint16_t)negprot->ni_keylen, /* encryption key length */
512 510 /* reserved field handled 2. */
513 511 VAR_BCC,
514 512 (int)negprot->ni_keylen,
515 513 negprot->ni_key, /* encryption key */
516 514 nbdomain);
517 515 break;
518 516
519 517 case NT_LM_0_12:
520 518 (void) ksocket_setsockopt(session->sock, SOL_SOCKET,
521 519 SO_RCVBUF, (const void *)&smb_nt_tcp_rcvbuf,
522 520 sizeof (smb_nt_tcp_rcvbuf), CRED());
523 521
524 522 /*
525 523 * Allow SMB signatures if using encrypted passwords
526 524 */
527 525 if ((secmode & NEGOTIATE_ENCRYPT_PASSWORDS) &&
528 526 sr->sr_cfg->skc_signing_enable) {
529 527 secmode |= NEGOTIATE_SECURITY_SIGNATURES_ENABLED;
530 528 if (sr->sr_cfg->skc_signing_required)
531 529 secmode |=
532 530 NEGOTIATE_SECURITY_SIGNATURES_REQUIRED;
533 531
534 532 session->srv_secmode = secmode;
535 533 }
536 534
537 535 /*
538 536 * Does the client want Extended Security?
539 537 * (and if we have it enabled)
540 538 * If so, handle as if a different dialect.
541 539 */
542 540 if ((sr->smb_flg2 & SMB_FLAGS2_EXT_SEC) != 0 &&
543 541 (negprot->ni_capabilities & CAP_EXTENDED_SECURITY) != 0)
544 542 goto NT_LM_0_12_ext_sec;
545 543
546 544 /* Else deny knowledge of extended security. */
547 545 sr->smb_flg2 &= ~SMB_FLAGS2_EXT_SEC;
548 546 negprot->ni_capabilities &= ~CAP_EXTENDED_SECURITY;
549 547
550 548 /*
551 549 * nbdomain is not expected to be aligned.
552 550 * Use temporary buffer to avoid alignment padding
553 551 */
554 552 wclen = smb_wcequiv_strlen(nbdomain) + sizeof (smb_wchar_t);
555 553 wcbuf = smb_srm_zalloc(sr, wclen);
556 554 smb_msgbuf_init(&mb, wcbuf, wclen, SMB_MSGBUF_UNICODE);
557 555 if (smb_msgbuf_encode(&mb, "U", nbdomain) < 0) {
558 556 smb_msgbuf_term(&mb);
559 557 smbsr_error(sr, 0, ERRSRV, ERRerror);
560 558 return (SDRC_ERROR);
561 559 }
562 560
563 561 rc = smbsr_encode_result(sr, 17, VAR_BCC,
564 562 "bwbwwllllTwbw#c#c",
565 563 17, /* wct */
566 564 negprot->ni_index, /* dialect index */
567 565 secmode, /* security mode */
568 566 negprot->ni_maxmpxcount, /* max MPX */
569 567 1, /* max VCs */
570 568 (DWORD)smb_maxbufsize, /* max buffer size */
571 569 0xFFFF, /* max raw size */
572 570 sesskey, /* session key */
573 571 negprot->ni_capabilities,
574 572 &negprot->ni_servertime, /* system time */
575 573 negprot->ni_tzcorrection,
576 574 negprot->ni_keylen, /* encryption key length */
577 575 VAR_BCC,
578 576 (int)negprot->ni_keylen,
579 577 negprot->ni_key, /* encryption key */
580 578 wclen,
581 579 wcbuf); /* nbdomain (unicode) */
582 580
583 581 smb_msgbuf_term(&mb);
584 582 break;
585 583
586 584 NT_LM_0_12_ext_sec:
587 585 /*
588 586 * This is the "Extended Security" variant of
589 587 * dialect NT_LM_0_12.
590 588 */
591 589 rc = smbsr_encode_result(sr, 17, VAR_BCC,
592 590 "bwbwwllllTwbw#c#c",
593 591 17, /* wct */
594 592 negprot->ni_index, /* dialect index */
595 593 secmode, /* security mode */
596 594 negprot->ni_maxmpxcount, /* max MPX */
597 595 1, /* max VCs */
598 596 (DWORD)smb_maxbufsize, /* max buffer size */
599 597 0xFFFF, /* max raw size */
600 598 sesskey, /* session key */
601 599 negprot->ni_capabilities,
602 600 &negprot->ni_servertime, /* system time */
603 601 negprot->ni_tzcorrection,
604 602 0, /* encryption key length (MBZ) */
605 603 VAR_BCC,
606 604 UUID_LEN,
607 605 sr->sr_cfg->skc_machine_uuid,
608 606 sr->sr_cfg->skc_negtok_len,
609 607 sr->sr_cfg->skc_negtok);
610 608 break;
611 609
612 610
613 611 default:
614 612 rc = smbsr_encode_result(sr, 1, 0, "bww", 1, -1, 0);
615 613 break;
616 614 }
617 615
618 616 if (rc != 0)
619 617 return (SDRC_ERROR);
620 618
621 619 /*
622 620 * Save the agreed dialect. Note that the state is also
623 621 * used to detect and reject attempts to re-negotiate.
624 622 */
625 623 session->dialect = negprot->ni_dialect;
626 624 session->s_state = SMB_SESSION_STATE_NEGOTIATED;
627 625
628 626 /* Allow normal SMB1 requests now. */
629 627 session->newrq_func = smb1sr_newrq;
630 628
631 629 return (SDRC_SUCCESS);
632 630 }
633 631
634 632 static int
635 633 smb_xlate_dialect(const char *dialect)
636 634 {
637 635 const smb_xlate_t *dp;
638 636 int i;
639 637
640 638 for (i = 0; i < smb_ndialects; ++i) {
641 639 dp = &smb_dialect[i];
642 640
643 641 if (strcmp(dp->str, dialect) == 0)
644 642 return (dp->code);
645 643 }
646 644
647 645 return (-1);
648 646 }
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