Commit | Line | Data |
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3979877e SF |
1 | /* |
2 | * fs/cifs/sess.c | |
3 | * | |
4 | * SMB/CIFS session setup handling routines | |
5 | * | |
790fe579 | 6 | * Copyright (c) International Business Machines Corp., 2006, 2007 |
3979877e SF |
7 | * Author(s): Steve French (sfrench@us.ibm.com) |
8 | * | |
9 | * This library is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as published | |
11 | * by the Free Software Foundation; either version 2.1 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
17 | * the GNU Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #include "cifspdu.h" | |
25 | #include "cifsglob.h" | |
26 | #include "cifsproto.h" | |
27 | #include "cifs_unicode.h" | |
28 | #include "cifs_debug.h" | |
29 | #include "ntlmssp.h" | |
30 | #include "nterr.h" | |
9c53588e | 31 | #include <linux/utsname.h> |
3979877e | 32 | |
3979877e | 33 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
790fe579 | 34 | unsigned char *p24); |
3979877e | 35 | |
3979877e SF |
36 | static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB) |
37 | { | |
38 | __u32 capabilities = 0; | |
39 | ||
40 | /* init fields common to all four types of SessSetup */ | |
41 | /* note that header is initialized to zero in header_assemble */ | |
42 | pSMB->req.AndXCommand = 0xFF; | |
43 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
44 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
45 | ||
46 | /* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */ | |
47 | ||
790fe579 | 48 | /* BB verify whether signing required on neg or just on auth frame |
3979877e SF |
49 | (and NTLM case) */ |
50 | ||
51 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
52 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
53 | ||
790fe579 SF |
54 | if (ses->server->secMode & |
55 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
3979877e SF |
56 | pSMB->req.hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
57 | ||
58 | if (ses->capabilities & CAP_UNICODE) { | |
59 | pSMB->req.hdr.Flags2 |= SMBFLG2_UNICODE; | |
60 | capabilities |= CAP_UNICODE; | |
61 | } | |
62 | if (ses->capabilities & CAP_STATUS32) { | |
63 | pSMB->req.hdr.Flags2 |= SMBFLG2_ERR_STATUS; | |
64 | capabilities |= CAP_STATUS32; | |
65 | } | |
66 | if (ses->capabilities & CAP_DFS) { | |
67 | pSMB->req.hdr.Flags2 |= SMBFLG2_DFS; | |
68 | capabilities |= CAP_DFS; | |
69 | } | |
70 | if (ses->capabilities & CAP_UNIX) { | |
71 | capabilities |= CAP_UNIX; | |
72 | } | |
73 | ||
74 | /* BB check whether to init vcnum BB */ | |
75 | return capabilities; | |
76 | } | |
77 | ||
3870253e | 78 | static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses, |
790fe579 | 79 | const struct nls_table *nls_cp) |
3979877e | 80 | { |
790fe579 | 81 | char *bcc_ptr = *pbcc_area; |
3979877e SF |
82 | int bytes_ret = 0; |
83 | ||
84 | /* BB FIXME add check that strings total less | |
85 | than 335 or will need to send them as arrays */ | |
86 | ||
0223cf0b SF |
87 | /* unicode strings, must be word aligned before the call */ |
88 | /* if ((long) bcc_ptr % 2) { | |
3979877e SF |
89 | *bcc_ptr = 0; |
90 | bcc_ptr++; | |
0223cf0b | 91 | } */ |
3979877e | 92 | /* copy user */ |
790fe579 | 93 | if (ses->userName == NULL) { |
6e659c63 SF |
94 | /* null user mount */ |
95 | *bcc_ptr = 0; | |
96 | *(bcc_ptr+1) = 0; | |
3979877e SF |
97 | } else { /* 300 should be long enough for any conceivable user name */ |
98 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->userName, | |
99 | 300, nls_cp); | |
100 | } | |
101 | bcc_ptr += 2 * bytes_ret; | |
102 | bcc_ptr += 2; /* account for null termination */ | |
103 | /* copy domain */ | |
790fe579 | 104 | if (ses->domainName == NULL) { |
6e659c63 SF |
105 | /* Sending null domain better than using a bogus domain name (as |
106 | we did briefly in 2.6.18) since server will use its default */ | |
107 | *bcc_ptr = 0; | |
108 | *(bcc_ptr+1) = 0; | |
109 | bytes_ret = 0; | |
110 | } else | |
3870253e | 111 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->domainName, |
3979877e SF |
112 | 256, nls_cp); |
113 | bcc_ptr += 2 * bytes_ret; | |
114 | bcc_ptr += 2; /* account for null terminator */ | |
115 | ||
116 | /* Copy OS version */ | |
117 | bytes_ret = cifs_strtoUCS((__le16 *)bcc_ptr, "Linux version ", 32, | |
118 | nls_cp); | |
119 | bcc_ptr += 2 * bytes_ret; | |
96b644bd | 120 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, init_utsname()->release, |
3979877e SF |
121 | 32, nls_cp); |
122 | bcc_ptr += 2 * bytes_ret; | |
123 | bcc_ptr += 2; /* trailing null */ | |
124 | ||
125 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
790fe579 | 126 | 32, nls_cp); |
3979877e SF |
127 | bcc_ptr += 2 * bytes_ret; |
128 | bcc_ptr += 2; /* trailing null */ | |
129 | ||
130 | *pbcc_area = bcc_ptr; | |
131 | } | |
132 | ||
3870253e | 133 | static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses, |
790fe579 | 134 | const struct nls_table *nls_cp) |
3979877e | 135 | { |
790fe579 | 136 | char *bcc_ptr = *pbcc_area; |
3979877e SF |
137 | |
138 | /* copy user */ | |
139 | /* BB what about null user mounts - check that we do this BB */ | |
790fe579 SF |
140 | /* copy user */ |
141 | if (ses->userName == NULL) { | |
142 | /* BB what about null user mounts - check that we do this BB */ | |
143 | } else { /* 300 should be long enough for any conceivable user name */ | |
144 | strncpy(bcc_ptr, ses->userName, 300); | |
145 | } | |
3979877e | 146 | /* BB improve check for overflow */ |
790fe579 | 147 | bcc_ptr += strnlen(ses->userName, 300); |
3979877e | 148 | *bcc_ptr = 0; |
790fe579 | 149 | bcc_ptr++; /* account for null termination */ |
3979877e | 150 | |
790fe579 SF |
151 | /* copy domain */ |
152 | ||
153 | if (ses->domainName != NULL) { | |
154 | strncpy(bcc_ptr, ses->domainName, 256); | |
3979877e | 155 | bcc_ptr += strnlen(ses->domainName, 256); |
790fe579 | 156 | } /* else we will send a null domain name |
6e659c63 | 157 | so the server will default to its own domain */ |
3979877e SF |
158 | *bcc_ptr = 0; |
159 | bcc_ptr++; | |
160 | ||
161 | /* BB check for overflow here */ | |
162 | ||
163 | strcpy(bcc_ptr, "Linux version "); | |
164 | bcc_ptr += strlen("Linux version "); | |
96b644bd SH |
165 | strcpy(bcc_ptr, init_utsname()->release); |
166 | bcc_ptr += strlen(init_utsname()->release) + 1; | |
3979877e SF |
167 | |
168 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
169 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
170 | ||
790fe579 | 171 | *pbcc_area = bcc_ptr; |
3979877e SF |
172 | } |
173 | ||
790fe579 SF |
174 | static int decode_unicode_ssetup(char **pbcc_area, int bleft, |
175 | struct cifsSesInfo *ses, | |
176 | const struct nls_table *nls_cp) | |
3979877e SF |
177 | { |
178 | int rc = 0; | |
179 | int words_left, len; | |
790fe579 | 180 | char *data = *pbcc_area; |
3979877e SF |
181 | |
182 | ||
183 | ||
790fe579 | 184 | cFYI(1, ("bleft %d", bleft)); |
3979877e SF |
185 | |
186 | ||
8e6f195a SF |
187 | /* SMB header is unaligned, so cifs servers word align start of |
188 | Unicode strings */ | |
189 | data++; | |
190 | bleft--; /* Windows servers do not always double null terminate | |
191 | their final Unicode string - in which case we | |
192 | now will not attempt to decode the byte of junk | |
193 | which follows it */ | |
50c2f753 | 194 | |
3979877e SF |
195 | words_left = bleft / 2; |
196 | ||
197 | /* save off server operating system */ | |
198 | len = UniStrnlen((wchar_t *) data, words_left); | |
199 | ||
200 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
201 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
202 | terminating last Unicode string in response */ | |
790fe579 | 203 | if (len >= words_left) |
3979877e SF |
204 | return rc; |
205 | ||
790fe579 | 206 | if (ses->serverOS) |
3979877e SF |
207 | kfree(ses->serverOS); |
208 | /* UTF-8 string will not grow more than four times as big as UCS-16 */ | |
209 | ses->serverOS = kzalloc(4 * len, GFP_KERNEL); | |
790fe579 | 210 | if (ses->serverOS != NULL) { |
3979877e SF |
211 | cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len, |
212 | nls_cp); | |
213 | } | |
214 | data += 2 * (len + 1); | |
215 | words_left -= len + 1; | |
216 | ||
217 | /* save off server network operating system */ | |
218 | len = UniStrnlen((wchar_t *) data, words_left); | |
219 | ||
790fe579 | 220 | if (len >= words_left) |
3979877e SF |
221 | return rc; |
222 | ||
790fe579 | 223 | if (ses->serverNOS) |
3979877e SF |
224 | kfree(ses->serverNOS); |
225 | ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */ | |
790fe579 | 226 | if (ses->serverNOS != NULL) { |
3979877e SF |
227 | cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len, |
228 | nls_cp); | |
790fe579 SF |
229 | if (strncmp(ses->serverNOS, "NT LAN Manager 4", 16) == 0) { |
230 | cFYI(1, ("NT4 server")); | |
3979877e SF |
231 | ses->flags |= CIFS_SES_NT4; |
232 | } | |
233 | } | |
234 | data += 2 * (len + 1); | |
235 | words_left -= len + 1; | |
236 | ||
790fe579 SF |
237 | /* save off server domain */ |
238 | len = UniStrnlen((wchar_t *) data, words_left); | |
239 | ||
240 | if (len > words_left) | |
241 | return rc; | |
242 | ||
243 | if (ses->serverDomain) | |
244 | kfree(ses->serverDomain); | |
245 | ses->serverDomain = kzalloc(2 * (len + 1), GFP_KERNEL); /* BB FIXME wrong length */ | |
246 | if (ses->serverDomain != NULL) { | |
247 | cifs_strfromUCS_le(ses->serverDomain, (__le16 *)data, len, | |
248 | nls_cp); | |
249 | ses->serverDomain[2*len] = 0; | |
250 | ses->serverDomain[(2*len) + 1] = 0; | |
251 | } | |
252 | data += 2 * (len + 1); | |
253 | words_left -= len + 1; | |
254 | ||
255 | cFYI(1, ("words left: %d", words_left)); | |
3979877e SF |
256 | |
257 | return rc; | |
258 | } | |
259 | ||
790fe579 SF |
260 | static int decode_ascii_ssetup(char **pbcc_area, int bleft, |
261 | struct cifsSesInfo *ses, | |
262 | const struct nls_table *nls_cp) | |
3979877e SF |
263 | { |
264 | int rc = 0; | |
265 | int len; | |
790fe579 | 266 | char *bcc_ptr = *pbcc_area; |
3979877e | 267 | |
790fe579 | 268 | cFYI(1, ("decode sessetup ascii. bleft %d", bleft)); |
50c2f753 | 269 | |
3979877e | 270 | len = strnlen(bcc_ptr, bleft); |
790fe579 | 271 | if (len >= bleft) |
3979877e | 272 | return rc; |
50c2f753 | 273 | |
790fe579 | 274 | if (ses->serverOS) |
3979877e SF |
275 | kfree(ses->serverOS); |
276 | ||
277 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); | |
790fe579 | 278 | if (ses->serverOS) |
3979877e | 279 | strncpy(ses->serverOS, bcc_ptr, len); |
790fe579 SF |
280 | if (strncmp(ses->serverOS, "OS/2", 4) == 0) { |
281 | cFYI(1, ("OS/2 server")); | |
9ac00b7d SF |
282 | ses->flags |= CIFS_SES_OS2; |
283 | } | |
3979877e SF |
284 | |
285 | bcc_ptr += len + 1; | |
286 | bleft -= len + 1; | |
287 | ||
288 | len = strnlen(bcc_ptr, bleft); | |
790fe579 | 289 | if (len >= bleft) |
3979877e SF |
290 | return rc; |
291 | ||
790fe579 | 292 | if (ses->serverNOS) |
3979877e SF |
293 | kfree(ses->serverNOS); |
294 | ||
295 | ses->serverNOS = kzalloc(len + 1, GFP_KERNEL); | |
790fe579 | 296 | if (ses->serverNOS) |
3979877e SF |
297 | strncpy(ses->serverNOS, bcc_ptr, len); |
298 | ||
299 | bcc_ptr += len + 1; | |
300 | bleft -= len + 1; | |
301 | ||
790fe579 SF |
302 | len = strnlen(bcc_ptr, bleft); |
303 | if (len > bleft) | |
304 | return rc; | |
3979877e | 305 | |
9ac00b7d SF |
306 | /* No domain field in LANMAN case. Domain is |
307 | returned by old servers in the SMB negprot response */ | |
308 | /* BB For newer servers which do not support Unicode, | |
309 | but thus do return domain here we could add parsing | |
310 | for it later, but it is not very important */ | |
790fe579 | 311 | cFYI(1, ("ascii: bytes left %d", bleft)); |
3979877e SF |
312 | |
313 | return rc; | |
314 | } | |
315 | ||
790fe579 | 316 | int |
3979877e SF |
317 | CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time, |
318 | const struct nls_table *nls_cp) | |
319 | { | |
320 | int rc = 0; | |
321 | int wct; | |
3979877e SF |
322 | struct smb_hdr *smb_buf; |
323 | char *bcc_ptr; | |
750d1151 | 324 | char *str_area; |
3979877e SF |
325 | SESSION_SETUP_ANDX *pSMB; |
326 | __u32 capabilities; | |
327 | int count; | |
328 | int resp_buf_type = 0; | |
750d1151 | 329 | struct kvec iov[2]; |
3979877e SF |
330 | enum securityEnum type; |
331 | __u16 action; | |
332 | int bytes_remaining; | |
254e55ed | 333 | |
790fe579 | 334 | if (ses == NULL) |
3979877e SF |
335 | return -EINVAL; |
336 | ||
337 | type = ses->server->secType; | |
f40c5628 | 338 | |
790fe579 SF |
339 | cFYI(1, ("sess setup type %d", type)); |
340 | if (type == LANMAN) { | |
3979877e SF |
341 | #ifndef CONFIG_CIFS_WEAK_PW_HASH |
342 | /* LANMAN and plaintext are less secure and off by default. | |
343 | So we make this explicitly be turned on in kconfig (in the | |
344 | build) and turned on at runtime (changed from the default) | |
345 | in proc/fs/cifs or via mount parm. Unfortunately this is | |
346 | needed for old Win (e.g. Win95), some obscure NAS and OS/2 */ | |
347 | return -EOPNOTSUPP; | |
348 | #endif | |
349 | wct = 10; /* lanman 2 style sessionsetup */ | |
790fe579 | 350 | } else if ((type == NTLM) || (type == NTLMv2)) { |
9312f675 | 351 | /* For NTLMv2 failures eventually may need to retry NTLM */ |
3979877e | 352 | wct = 13; /* old style NTLM sessionsetup */ |
790fe579 | 353 | } else /* same size: negotiate or auth, NTLMSSP or extended security */ |
3979877e SF |
354 | wct = 12; |
355 | ||
356 | rc = small_smb_init_no_tc(SMB_COM_SESSION_SETUP_ANDX, wct, ses, | |
357 | (void **)&smb_buf); | |
790fe579 | 358 | if (rc) |
3979877e SF |
359 | return rc; |
360 | ||
361 | pSMB = (SESSION_SETUP_ANDX *)smb_buf; | |
362 | ||
363 | capabilities = cifs_ssetup_hdr(ses, pSMB); | |
750d1151 SF |
364 | |
365 | /* we will send the SMB in two pieces, | |
366 | a fixed length beginning part, and a | |
367 | second part which will include the strings | |
368 | and rest of bcc area, in order to avoid having | |
369 | to do a large buffer 17K allocation */ | |
790fe579 SF |
370 | iov[0].iov_base = (char *)pSMB; |
371 | iov[0].iov_len = smb_buf->smb_buf_length + 4; | |
750d1151 SF |
372 | |
373 | /* 2000 big enough to fit max user, domain, NOS name etc. */ | |
374 | str_area = kmalloc(2000, GFP_KERNEL); | |
5e6e6232 CG |
375 | if (str_area == NULL) { |
376 | cifs_small_buf_release(smb_buf); | |
377 | return -ENOMEM; | |
378 | } | |
750d1151 | 379 | bcc_ptr = str_area; |
3979877e | 380 | |
9ac00b7d SF |
381 | ses->flags &= ~CIFS_SES_LANMAN; |
382 | ||
790fe579 | 383 | if (type == LANMAN) { |
3979877e | 384 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
7c7b25bc | 385 | char lnm_session_key[CIFS_SESS_KEY_SIZE]; |
3979877e SF |
386 | |
387 | /* no capabilities flags in old lanman negotiation */ | |
388 | ||
790fe579 | 389 | pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3979877e SF |
390 | /* BB calculate hash with password */ |
391 | /* and copy into bcc */ | |
392 | ||
7c7b25bc | 393 | calc_lanman_hash(ses, lnm_session_key); |
790fe579 | 394 | ses->flags |= CIFS_SES_LANMAN; |
750d1151 | 395 | /* #ifdef CONFIG_CIFS_DEBUG2 |
3979877e | 396 | cifs_dump_mem("cryptkey: ",ses->server->cryptKey, |
7c7b25bc | 397 | CIFS_SESS_KEY_SIZE); |
750d1151 | 398 | #endif */ |
7c7b25bc SF |
399 | memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESS_KEY_SIZE); |
400 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
3979877e SF |
401 | |
402 | /* can not sign if LANMAN negotiated so no need | |
403 | to calculate signing key? but what if server | |
404 | changed to do higher than lanman dialect and | |
405 | we reconnected would we ever calc signing_key? */ | |
406 | ||
790fe579 | 407 | cFYI(1, ("Negotiating LANMAN setting up strings")); |
3979877e SF |
408 | /* Unicode not allowed for LANMAN dialects */ |
409 | ascii_ssetup_strings(&bcc_ptr, ses, nls_cp); | |
790fe579 | 410 | #endif |
3979877e | 411 | } else if (type == NTLM) { |
7c7b25bc | 412 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
3979877e SF |
413 | |
414 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
415 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
7c7b25bc | 416 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3979877e | 417 | pSMB->req_no_secext.CaseSensitivePasswordLength = |
7c7b25bc | 418 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
50c2f753 | 419 | |
3979877e SF |
420 | /* calculate session key */ |
421 | SMBNTencrypt(ses->password, ses->server->cryptKey, | |
422 | ntlm_session_key); | |
423 | ||
790fe579 | 424 | if (first_time) /* should this be moved into common code |
3979877e | 425 | with similar ntlmv2 path? */ |
b609f06a | 426 | cifs_calculate_mac_key(&ses->server->mac_signing_key, |
3979877e SF |
427 | ntlm_session_key, ses->password); |
428 | /* copy session key */ | |
429 | ||
790fe579 | 430 | memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE); |
7c7b25bc | 431 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
790fe579 | 432 | memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE); |
7c7b25bc | 433 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
790fe579 | 434 | if (ses->capabilities & CAP_UNICODE) { |
0223cf0b SF |
435 | /* unicode strings must be word aligned */ |
436 | if (iov[0].iov_len % 2) { | |
437 | *bcc_ptr = 0; | |
790fe579 SF |
438 | bcc_ptr++; |
439 | } | |
7c7b25bc | 440 | unicode_ssetup_strings(&bcc_ptr, ses, nls_cp); |
0223cf0b | 441 | } else |
7c7b25bc SF |
442 | ascii_ssetup_strings(&bcc_ptr, ses, nls_cp); |
443 | } else if (type == NTLMv2) { | |
790fe579 | 444 | char *v2_sess_key = |
6d027cfd | 445 | kmalloc(sizeof(struct ntlmv2_resp), GFP_KERNEL); |
f64b23ae SF |
446 | |
447 | /* BB FIXME change all users of v2_sess_key to | |
448 | struct ntlmv2_resp */ | |
7c7b25bc | 449 | |
790fe579 | 450 | if (v2_sess_key == NULL) { |
7c7b25bc SF |
451 | cifs_small_buf_release(smb_buf); |
452 | return -ENOMEM; | |
453 | } | |
454 | ||
455 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
456 | ||
457 | /* LM2 password would be here if we supported it */ | |
458 | pSMB->req_no_secext.CaseInsensitivePasswordLength = 0; | |
459 | /* cpu_to_le16(LM2_SESS_KEY_SIZE); */ | |
460 | ||
461 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
f64b23ae | 462 | cpu_to_le16(sizeof(struct ntlmv2_resp)); |
7c7b25bc SF |
463 | |
464 | /* calculate session key */ | |
1717ffc5 | 465 | setup_ntlmv2_rsp(ses, v2_sess_key, nls_cp); |
790fe579 SF |
466 | if (first_time) /* should this be moved into common code |
467 | with similar ntlmv2 path? */ | |
7c7b25bc SF |
468 | /* cifs_calculate_ntlmv2_mac_key(ses->server->mac_signing_key, |
469 | response BB FIXME, v2_sess_key); */ | |
470 | ||
471 | /* copy session key */ | |
472 | ||
473 | /* memcpy(bcc_ptr, (char *)ntlm_session_key,LM2_SESS_KEY_SIZE); | |
474 | bcc_ptr += LM2_SESS_KEY_SIZE; */ | |
3870253e SF |
475 | memcpy(bcc_ptr, (char *)v2_sess_key, |
476 | sizeof(struct ntlmv2_resp)); | |
f64b23ae SF |
477 | bcc_ptr += sizeof(struct ntlmv2_resp); |
478 | kfree(v2_sess_key); | |
790fe579 SF |
479 | if (ses->capabilities & CAP_UNICODE) { |
480 | if (iov[0].iov_len % 2) { | |
0223cf0b SF |
481 | *bcc_ptr = 0; |
482 | } bcc_ptr++; | |
3979877e | 483 | unicode_ssetup_strings(&bcc_ptr, ses, nls_cp); |
0223cf0b | 484 | } else |
3979877e SF |
485 | ascii_ssetup_strings(&bcc_ptr, ses, nls_cp); |
486 | } else /* NTLMSSP or SPNEGO */ { | |
487 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
488 | capabilities |= CAP_EXTENDED_SECURITY; | |
489 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
490 | /* BB set password lengths */ | |
491 | } | |
492 | ||
750d1151 | 493 | count = (long) bcc_ptr - (long) str_area; |
3979877e SF |
494 | smb_buf->smb_buf_length += count; |
495 | ||
3979877e SF |
496 | BCC_LE(smb_buf) = cpu_to_le16(count); |
497 | ||
750d1151 | 498 | iov[1].iov_base = str_area; |
790fe579 | 499 | iov[1].iov_len = count; |
750d1151 | 500 | rc = SendReceive2(xid, ses, iov, 2 /* num_iovecs */, &resp_buf_type, 0); |
3979877e SF |
501 | /* SMB request buf freed in SendReceive2 */ |
502 | ||
790fe579 SF |
503 | cFYI(1, ("ssetup rc from sendrecv2 is %d", rc)); |
504 | if (rc) | |
3979877e SF |
505 | goto ssetup_exit; |
506 | ||
507 | pSMB = (SESSION_SETUP_ANDX *)iov[0].iov_base; | |
508 | smb_buf = (struct smb_hdr *)iov[0].iov_base; | |
509 | ||
790fe579 | 510 | if ((smb_buf->WordCount != 3) && (smb_buf->WordCount != 4)) { |
3979877e | 511 | rc = -EIO; |
790fe579 | 512 | cERROR(1, ("bad word count %d", smb_buf->WordCount)); |
3979877e SF |
513 | goto ssetup_exit; |
514 | } | |
515 | action = le16_to_cpu(pSMB->resp.Action); | |
516 | if (action & GUEST_LOGIN) | |
189acaae | 517 | cFYI(1, ("Guest login")); /* BB mark SesInfo struct? */ |
3979877e SF |
518 | ses->Suid = smb_buf->Uid; /* UID left in wire format (le) */ |
519 | cFYI(1, ("UID = %d ", ses->Suid)); | |
520 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
521 | /* and lanman response is 3 */ | |
522 | bytes_remaining = BCC(smb_buf); | |
523 | bcc_ptr = pByteArea(smb_buf); | |
524 | ||
790fe579 | 525 | if (smb_buf->WordCount == 4) { |
3979877e SF |
526 | __u16 blob_len; |
527 | blob_len = le16_to_cpu(pSMB->resp.SecurityBlobLength); | |
528 | bcc_ptr += blob_len; | |
790fe579 SF |
529 | if (blob_len > bytes_remaining) { |
530 | cERROR(1, ("bad security blob length %d", blob_len)); | |
3979877e SF |
531 | rc = -EINVAL; |
532 | goto ssetup_exit; | |
533 | } | |
534 | bytes_remaining -= blob_len; | |
790fe579 | 535 | } |
3979877e SF |
536 | |
537 | /* BB check if Unicode and decode strings */ | |
790fe579 | 538 | if (smb_buf->Flags2 & SMBFLG2_UNICODE) |
3979877e SF |
539 | rc = decode_unicode_ssetup(&bcc_ptr, bytes_remaining, |
540 | ses, nls_cp); | |
541 | else | |
63135e08 SF |
542 | rc = decode_ascii_ssetup(&bcc_ptr, bytes_remaining, |
543 | ses, nls_cp); | |
50c2f753 | 544 | |
3979877e | 545 | ssetup_exit: |
750d1151 | 546 | kfree(str_area); |
790fe579 SF |
547 | if (resp_buf_type == CIFS_SMALL_BUFFER) { |
548 | cFYI(1, ("ssetup freeing small buf %p", iov[0].iov_base)); | |
3979877e | 549 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 550 | } else if (resp_buf_type == CIFS_LARGE_BUFFER) |
3979877e SF |
551 | cifs_buf_release(iov[0].iov_base); |
552 | ||
553 | return rc; | |
554 | } |