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 | } | |
26f57364 | 70 | if (ses->capabilities & CAP_UNIX) |
3979877e | 71 | capabilities |= CAP_UNIX; |
3979877e SF |
72 | |
73 | /* BB check whether to init vcnum BB */ | |
74 | return capabilities; | |
75 | } | |
76 | ||
0d3a01fa JL |
77 | static void |
78 | unicode_oslm_strings(char **pbcc_area, const struct nls_table *nls_cp) | |
79 | { | |
80 | char *bcc_ptr = *pbcc_area; | |
81 | int bytes_ret = 0; | |
82 | ||
83 | /* Copy OS version */ | |
84 | bytes_ret = cifs_strtoUCS((__le16 *)bcc_ptr, "Linux version ", 32, | |
85 | nls_cp); | |
86 | bcc_ptr += 2 * bytes_ret; | |
87 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, init_utsname()->release, | |
88 | 32, nls_cp); | |
89 | bcc_ptr += 2 * bytes_ret; | |
90 | bcc_ptr += 2; /* trailing null */ | |
91 | ||
92 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
93 | 32, nls_cp); | |
94 | bcc_ptr += 2 * bytes_ret; | |
95 | bcc_ptr += 2; /* trailing null */ | |
96 | ||
97 | *pbcc_area = bcc_ptr; | |
98 | } | |
99 | ||
100 | static void unicode_domain_string(char **pbcc_area, struct cifsSesInfo *ses, | |
101 | const struct nls_table *nls_cp) | |
102 | { | |
103 | char *bcc_ptr = *pbcc_area; | |
104 | int bytes_ret = 0; | |
105 | ||
106 | /* copy domain */ | |
107 | if (ses->domainName == NULL) { | |
108 | /* Sending null domain better than using a bogus domain name (as | |
109 | we did briefly in 2.6.18) since server will use its default */ | |
110 | *bcc_ptr = 0; | |
111 | *(bcc_ptr+1) = 0; | |
112 | bytes_ret = 0; | |
113 | } else | |
114 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->domainName, | |
115 | 256, nls_cp); | |
116 | bcc_ptr += 2 * bytes_ret; | |
117 | bcc_ptr += 2; /* account for null terminator */ | |
118 | ||
119 | *pbcc_area = bcc_ptr; | |
120 | } | |
121 | ||
122 | ||
3870253e | 123 | static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses, |
790fe579 | 124 | const struct nls_table *nls_cp) |
3979877e | 125 | { |
790fe579 | 126 | char *bcc_ptr = *pbcc_area; |
3979877e SF |
127 | int bytes_ret = 0; |
128 | ||
129 | /* BB FIXME add check that strings total less | |
130 | than 335 or will need to send them as arrays */ | |
131 | ||
0223cf0b SF |
132 | /* unicode strings, must be word aligned before the call */ |
133 | /* if ((long) bcc_ptr % 2) { | |
3979877e SF |
134 | *bcc_ptr = 0; |
135 | bcc_ptr++; | |
0223cf0b | 136 | } */ |
3979877e | 137 | /* copy user */ |
790fe579 | 138 | if (ses->userName == NULL) { |
6e659c63 SF |
139 | /* null user mount */ |
140 | *bcc_ptr = 0; | |
141 | *(bcc_ptr+1) = 0; | |
3979877e SF |
142 | } else { /* 300 should be long enough for any conceivable user name */ |
143 | bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->userName, | |
144 | 300, nls_cp); | |
145 | } | |
146 | bcc_ptr += 2 * bytes_ret; | |
147 | bcc_ptr += 2; /* account for null termination */ | |
3979877e | 148 | |
0d3a01fa JL |
149 | unicode_domain_string(&bcc_ptr, ses, nls_cp); |
150 | unicode_oslm_strings(&bcc_ptr, nls_cp); | |
3979877e SF |
151 | |
152 | *pbcc_area = bcc_ptr; | |
153 | } | |
154 | ||
3870253e | 155 | static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses, |
790fe579 | 156 | const struct nls_table *nls_cp) |
3979877e | 157 | { |
790fe579 | 158 | char *bcc_ptr = *pbcc_area; |
3979877e SF |
159 | |
160 | /* copy user */ | |
161 | /* BB what about null user mounts - check that we do this BB */ | |
790fe579 SF |
162 | /* copy user */ |
163 | if (ses->userName == NULL) { | |
164 | /* BB what about null user mounts - check that we do this BB */ | |
165 | } else { /* 300 should be long enough for any conceivable user name */ | |
166 | strncpy(bcc_ptr, ses->userName, 300); | |
167 | } | |
3979877e | 168 | /* BB improve check for overflow */ |
790fe579 | 169 | bcc_ptr += strnlen(ses->userName, 300); |
3979877e | 170 | *bcc_ptr = 0; |
790fe579 | 171 | bcc_ptr++; /* account for null termination */ |
3979877e | 172 | |
790fe579 SF |
173 | /* copy domain */ |
174 | ||
175 | if (ses->domainName != NULL) { | |
176 | strncpy(bcc_ptr, ses->domainName, 256); | |
3979877e | 177 | bcc_ptr += strnlen(ses->domainName, 256); |
790fe579 | 178 | } /* else we will send a null domain name |
6e659c63 | 179 | so the server will default to its own domain */ |
3979877e SF |
180 | *bcc_ptr = 0; |
181 | bcc_ptr++; | |
182 | ||
183 | /* BB check for overflow here */ | |
184 | ||
185 | strcpy(bcc_ptr, "Linux version "); | |
186 | bcc_ptr += strlen("Linux version "); | |
96b644bd SH |
187 | strcpy(bcc_ptr, init_utsname()->release); |
188 | bcc_ptr += strlen(init_utsname()->release) + 1; | |
3979877e SF |
189 | |
190 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
191 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
192 | ||
790fe579 | 193 | *pbcc_area = bcc_ptr; |
3979877e SF |
194 | } |
195 | ||
790fe579 SF |
196 | static int decode_unicode_ssetup(char **pbcc_area, int bleft, |
197 | struct cifsSesInfo *ses, | |
198 | const struct nls_table *nls_cp) | |
3979877e SF |
199 | { |
200 | int rc = 0; | |
201 | int words_left, len; | |
790fe579 | 202 | char *data = *pbcc_area; |
3979877e SF |
203 | |
204 | ||
205 | ||
790fe579 | 206 | cFYI(1, ("bleft %d", bleft)); |
3979877e SF |
207 | |
208 | ||
8e6f195a SF |
209 | /* SMB header is unaligned, so cifs servers word align start of |
210 | Unicode strings */ | |
211 | data++; | |
212 | bleft--; /* Windows servers do not always double null terminate | |
213 | their final Unicode string - in which case we | |
214 | now will not attempt to decode the byte of junk | |
215 | which follows it */ | |
50c2f753 | 216 | |
3979877e SF |
217 | words_left = bleft / 2; |
218 | ||
219 | /* save off server operating system */ | |
220 | len = UniStrnlen((wchar_t *) data, words_left); | |
221 | ||
222 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
223 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
224 | terminating last Unicode string in response */ | |
790fe579 | 225 | if (len >= words_left) |
3979877e SF |
226 | return rc; |
227 | ||
26f57364 | 228 | kfree(ses->serverOS); |
3979877e SF |
229 | /* UTF-8 string will not grow more than four times as big as UCS-16 */ |
230 | ses->serverOS = kzalloc(4 * len, GFP_KERNEL); | |
26f57364 SF |
231 | if (ses->serverOS != NULL) |
232 | cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len, nls_cp); | |
3979877e SF |
233 | data += 2 * (len + 1); |
234 | words_left -= len + 1; | |
235 | ||
236 | /* save off server network operating system */ | |
237 | len = UniStrnlen((wchar_t *) data, words_left); | |
238 | ||
790fe579 | 239 | if (len >= words_left) |
3979877e SF |
240 | return rc; |
241 | ||
26f57364 | 242 | kfree(ses->serverNOS); |
3979877e | 243 | ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */ |
790fe579 | 244 | if (ses->serverNOS != NULL) { |
3979877e SF |
245 | cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len, |
246 | nls_cp); | |
790fe579 SF |
247 | if (strncmp(ses->serverNOS, "NT LAN Manager 4", 16) == 0) { |
248 | cFYI(1, ("NT4 server")); | |
3979877e SF |
249 | ses->flags |= CIFS_SES_NT4; |
250 | } | |
251 | } | |
252 | data += 2 * (len + 1); | |
253 | words_left -= len + 1; | |
254 | ||
790fe579 SF |
255 | /* save off server domain */ |
256 | len = UniStrnlen((wchar_t *) data, words_left); | |
257 | ||
258 | if (len > words_left) | |
259 | return rc; | |
260 | ||
26f57364 | 261 | kfree(ses->serverDomain); |
790fe579 SF |
262 | ses->serverDomain = kzalloc(2 * (len + 1), GFP_KERNEL); /* BB FIXME wrong length */ |
263 | if (ses->serverDomain != NULL) { | |
264 | cifs_strfromUCS_le(ses->serverDomain, (__le16 *)data, len, | |
265 | nls_cp); | |
266 | ses->serverDomain[2*len] = 0; | |
267 | ses->serverDomain[(2*len) + 1] = 0; | |
268 | } | |
269 | data += 2 * (len + 1); | |
270 | words_left -= len + 1; | |
271 | ||
272 | cFYI(1, ("words left: %d", words_left)); | |
3979877e SF |
273 | |
274 | return rc; | |
275 | } | |
276 | ||
790fe579 SF |
277 | static int decode_ascii_ssetup(char **pbcc_area, int bleft, |
278 | struct cifsSesInfo *ses, | |
279 | const struct nls_table *nls_cp) | |
3979877e SF |
280 | { |
281 | int rc = 0; | |
282 | int len; | |
790fe579 | 283 | char *bcc_ptr = *pbcc_area; |
3979877e | 284 | |
790fe579 | 285 | cFYI(1, ("decode sessetup ascii. bleft %d", bleft)); |
50c2f753 | 286 | |
3979877e | 287 | len = strnlen(bcc_ptr, bleft); |
790fe579 | 288 | if (len >= bleft) |
3979877e | 289 | return rc; |
50c2f753 | 290 | |
26f57364 | 291 | kfree(ses->serverOS); |
3979877e SF |
292 | |
293 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); | |
790fe579 | 294 | if (ses->serverOS) |
3979877e | 295 | strncpy(ses->serverOS, bcc_ptr, len); |
790fe579 SF |
296 | if (strncmp(ses->serverOS, "OS/2", 4) == 0) { |
297 | cFYI(1, ("OS/2 server")); | |
9ac00b7d SF |
298 | ses->flags |= CIFS_SES_OS2; |
299 | } | |
3979877e SF |
300 | |
301 | bcc_ptr += len + 1; | |
302 | bleft -= len + 1; | |
303 | ||
304 | len = strnlen(bcc_ptr, bleft); | |
790fe579 | 305 | if (len >= bleft) |
3979877e SF |
306 | return rc; |
307 | ||
26f57364 | 308 | kfree(ses->serverNOS); |
3979877e SF |
309 | |
310 | ses->serverNOS = kzalloc(len + 1, GFP_KERNEL); | |
790fe579 | 311 | if (ses->serverNOS) |
3979877e SF |
312 | strncpy(ses->serverNOS, bcc_ptr, len); |
313 | ||
314 | bcc_ptr += len + 1; | |
315 | bleft -= len + 1; | |
316 | ||
790fe579 SF |
317 | len = strnlen(bcc_ptr, bleft); |
318 | if (len > bleft) | |
319 | return rc; | |
3979877e | 320 | |
9ac00b7d SF |
321 | /* No domain field in LANMAN case. Domain is |
322 | returned by old servers in the SMB negprot response */ | |
323 | /* BB For newer servers which do not support Unicode, | |
324 | but thus do return domain here we could add parsing | |
325 | for it later, but it is not very important */ | |
790fe579 | 326 | cFYI(1, ("ascii: bytes left %d", bleft)); |
3979877e SF |
327 | |
328 | return rc; | |
329 | } | |
330 | ||
790fe579 | 331 | int |
3979877e SF |
332 | CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time, |
333 | const struct nls_table *nls_cp) | |
334 | { | |
335 | int rc = 0; | |
336 | int wct; | |
3979877e SF |
337 | struct smb_hdr *smb_buf; |
338 | char *bcc_ptr; | |
750d1151 | 339 | char *str_area; |
3979877e SF |
340 | SESSION_SETUP_ANDX *pSMB; |
341 | __u32 capabilities; | |
342 | int count; | |
343 | int resp_buf_type = 0; | |
750d1151 | 344 | struct kvec iov[2]; |
3979877e SF |
345 | enum securityEnum type; |
346 | __u16 action; | |
347 | int bytes_remaining; | |
254e55ed | 348 | |
790fe579 | 349 | if (ses == NULL) |
3979877e SF |
350 | return -EINVAL; |
351 | ||
352 | type = ses->server->secType; | |
f40c5628 | 353 | |
790fe579 SF |
354 | cFYI(1, ("sess setup type %d", type)); |
355 | if (type == LANMAN) { | |
3979877e SF |
356 | #ifndef CONFIG_CIFS_WEAK_PW_HASH |
357 | /* LANMAN and plaintext are less secure and off by default. | |
358 | So we make this explicitly be turned on in kconfig (in the | |
359 | build) and turned on at runtime (changed from the default) | |
360 | in proc/fs/cifs or via mount parm. Unfortunately this is | |
361 | needed for old Win (e.g. Win95), some obscure NAS and OS/2 */ | |
362 | return -EOPNOTSUPP; | |
363 | #endif | |
364 | wct = 10; /* lanman 2 style sessionsetup */ | |
790fe579 | 365 | } else if ((type == NTLM) || (type == NTLMv2)) { |
9312f675 | 366 | /* For NTLMv2 failures eventually may need to retry NTLM */ |
3979877e | 367 | wct = 13; /* old style NTLM sessionsetup */ |
790fe579 | 368 | } else /* same size: negotiate or auth, NTLMSSP or extended security */ |
3979877e SF |
369 | wct = 12; |
370 | ||
371 | rc = small_smb_init_no_tc(SMB_COM_SESSION_SETUP_ANDX, wct, ses, | |
372 | (void **)&smb_buf); | |
790fe579 | 373 | if (rc) |
3979877e SF |
374 | return rc; |
375 | ||
376 | pSMB = (SESSION_SETUP_ANDX *)smb_buf; | |
377 | ||
378 | capabilities = cifs_ssetup_hdr(ses, pSMB); | |
750d1151 SF |
379 | |
380 | /* we will send the SMB in two pieces, | |
381 | a fixed length beginning part, and a | |
382 | second part which will include the strings | |
383 | and rest of bcc area, in order to avoid having | |
384 | to do a large buffer 17K allocation */ | |
790fe579 SF |
385 | iov[0].iov_base = (char *)pSMB; |
386 | iov[0].iov_len = smb_buf->smb_buf_length + 4; | |
750d1151 SF |
387 | |
388 | /* 2000 big enough to fit max user, domain, NOS name etc. */ | |
389 | str_area = kmalloc(2000, GFP_KERNEL); | |
5e6e6232 CG |
390 | if (str_area == NULL) { |
391 | cifs_small_buf_release(smb_buf); | |
392 | return -ENOMEM; | |
393 | } | |
750d1151 | 394 | bcc_ptr = str_area; |
3979877e | 395 | |
9ac00b7d SF |
396 | ses->flags &= ~CIFS_SES_LANMAN; |
397 | ||
790fe579 | 398 | if (type == LANMAN) { |
3979877e | 399 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
7c7b25bc | 400 | char lnm_session_key[CIFS_SESS_KEY_SIZE]; |
3979877e SF |
401 | |
402 | /* no capabilities flags in old lanman negotiation */ | |
403 | ||
790fe579 | 404 | pSMB->old_req.PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3979877e SF |
405 | /* BB calculate hash with password */ |
406 | /* and copy into bcc */ | |
407 | ||
7c7b25bc | 408 | calc_lanman_hash(ses, lnm_session_key); |
790fe579 | 409 | ses->flags |= CIFS_SES_LANMAN; |
750d1151 | 410 | /* #ifdef CONFIG_CIFS_DEBUG2 |
3979877e | 411 | cifs_dump_mem("cryptkey: ",ses->server->cryptKey, |
7c7b25bc | 412 | CIFS_SESS_KEY_SIZE); |
750d1151 | 413 | #endif */ |
7c7b25bc SF |
414 | memcpy(bcc_ptr, (char *)lnm_session_key, CIFS_SESS_KEY_SIZE); |
415 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
3979877e SF |
416 | |
417 | /* can not sign if LANMAN negotiated so no need | |
418 | to calculate signing key? but what if server | |
419 | changed to do higher than lanman dialect and | |
420 | we reconnected would we ever calc signing_key? */ | |
421 | ||
790fe579 | 422 | cFYI(1, ("Negotiating LANMAN setting up strings")); |
3979877e SF |
423 | /* Unicode not allowed for LANMAN dialects */ |
424 | ascii_ssetup_strings(&bcc_ptr, ses, nls_cp); | |
790fe579 | 425 | #endif |
3979877e | 426 | } else if (type == NTLM) { |
7c7b25bc | 427 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
3979877e SF |
428 | |
429 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
430 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
7c7b25bc | 431 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3979877e | 432 | pSMB->req_no_secext.CaseSensitivePasswordLength = |
7c7b25bc | 433 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
50c2f753 | 434 | |
3979877e SF |
435 | /* calculate session key */ |
436 | SMBNTencrypt(ses->password, ses->server->cryptKey, | |
437 | ntlm_session_key); | |
438 | ||
790fe579 | 439 | if (first_time) /* should this be moved into common code |
3979877e | 440 | with similar ntlmv2 path? */ |
b609f06a | 441 | cifs_calculate_mac_key(&ses->server->mac_signing_key, |
3979877e SF |
442 | ntlm_session_key, ses->password); |
443 | /* copy session key */ | |
444 | ||
790fe579 | 445 | memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE); |
7c7b25bc | 446 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
790fe579 | 447 | memcpy(bcc_ptr, (char *)ntlm_session_key, CIFS_SESS_KEY_SIZE); |
7c7b25bc | 448 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
790fe579 | 449 | if (ses->capabilities & CAP_UNICODE) { |
0223cf0b SF |
450 | /* unicode strings must be word aligned */ |
451 | if (iov[0].iov_len % 2) { | |
452 | *bcc_ptr = 0; | |
790fe579 SF |
453 | bcc_ptr++; |
454 | } | |
7c7b25bc | 455 | unicode_ssetup_strings(&bcc_ptr, ses, nls_cp); |
0223cf0b | 456 | } else |
7c7b25bc SF |
457 | ascii_ssetup_strings(&bcc_ptr, ses, nls_cp); |
458 | } else if (type == NTLMv2) { | |
790fe579 | 459 | char *v2_sess_key = |
6d027cfd | 460 | kmalloc(sizeof(struct ntlmv2_resp), GFP_KERNEL); |
f64b23ae SF |
461 | |
462 | /* BB FIXME change all users of v2_sess_key to | |
463 | struct ntlmv2_resp */ | |
7c7b25bc | 464 | |
790fe579 | 465 | if (v2_sess_key == NULL) { |
7c7b25bc SF |
466 | cifs_small_buf_release(smb_buf); |
467 | return -ENOMEM; | |
468 | } | |
469 | ||
470 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
471 | ||
472 | /* LM2 password would be here if we supported it */ | |
473 | pSMB->req_no_secext.CaseInsensitivePasswordLength = 0; | |
474 | /* cpu_to_le16(LM2_SESS_KEY_SIZE); */ | |
475 | ||
476 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
f64b23ae | 477 | cpu_to_le16(sizeof(struct ntlmv2_resp)); |
7c7b25bc SF |
478 | |
479 | /* calculate session key */ | |
1717ffc5 | 480 | setup_ntlmv2_rsp(ses, v2_sess_key, nls_cp); |
790fe579 SF |
481 | if (first_time) /* should this be moved into common code |
482 | with similar ntlmv2 path? */ | |
7c7b25bc SF |
483 | /* cifs_calculate_ntlmv2_mac_key(ses->server->mac_signing_key, |
484 | response BB FIXME, v2_sess_key); */ | |
485 | ||
486 | /* copy session key */ | |
487 | ||
488 | /* memcpy(bcc_ptr, (char *)ntlm_session_key,LM2_SESS_KEY_SIZE); | |
489 | bcc_ptr += LM2_SESS_KEY_SIZE; */ | |
3870253e SF |
490 | memcpy(bcc_ptr, (char *)v2_sess_key, |
491 | sizeof(struct ntlmv2_resp)); | |
f64b23ae SF |
492 | bcc_ptr += sizeof(struct ntlmv2_resp); |
493 | kfree(v2_sess_key); | |
790fe579 SF |
494 | if (ses->capabilities & CAP_UNICODE) { |
495 | if (iov[0].iov_len % 2) { | |
0223cf0b | 496 | *bcc_ptr = 0; |
26f57364 SF |
497 | bcc_ptr++; |
498 | } | |
3979877e | 499 | unicode_ssetup_strings(&bcc_ptr, ses, nls_cp); |
0223cf0b | 500 | } else |
3979877e SF |
501 | ascii_ssetup_strings(&bcc_ptr, ses, nls_cp); |
502 | } else /* NTLMSSP or SPNEGO */ { | |
503 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
504 | capabilities |= CAP_EXTENDED_SECURITY; | |
505 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
506 | /* BB set password lengths */ | |
507 | } | |
508 | ||
750d1151 | 509 | count = (long) bcc_ptr - (long) str_area; |
3979877e SF |
510 | smb_buf->smb_buf_length += count; |
511 | ||
3979877e SF |
512 | BCC_LE(smb_buf) = cpu_to_le16(count); |
513 | ||
750d1151 | 514 | iov[1].iov_base = str_area; |
790fe579 | 515 | iov[1].iov_len = count; |
a761ac57 | 516 | rc = SendReceive2(xid, ses, iov, 2 /* num_iovecs */, &resp_buf_type, |
133672ef | 517 | CIFS_STD_OP /* not long */ | CIFS_LOG_ERROR); |
3979877e SF |
518 | /* SMB request buf freed in SendReceive2 */ |
519 | ||
790fe579 SF |
520 | cFYI(1, ("ssetup rc from sendrecv2 is %d", rc)); |
521 | if (rc) | |
3979877e SF |
522 | goto ssetup_exit; |
523 | ||
524 | pSMB = (SESSION_SETUP_ANDX *)iov[0].iov_base; | |
525 | smb_buf = (struct smb_hdr *)iov[0].iov_base; | |
526 | ||
790fe579 | 527 | if ((smb_buf->WordCount != 3) && (smb_buf->WordCount != 4)) { |
3979877e | 528 | rc = -EIO; |
790fe579 | 529 | cERROR(1, ("bad word count %d", smb_buf->WordCount)); |
3979877e SF |
530 | goto ssetup_exit; |
531 | } | |
532 | action = le16_to_cpu(pSMB->resp.Action); | |
533 | if (action & GUEST_LOGIN) | |
189acaae | 534 | cFYI(1, ("Guest login")); /* BB mark SesInfo struct? */ |
3979877e SF |
535 | ses->Suid = smb_buf->Uid; /* UID left in wire format (le) */ |
536 | cFYI(1, ("UID = %d ", ses->Suid)); | |
537 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
538 | /* and lanman response is 3 */ | |
539 | bytes_remaining = BCC(smb_buf); | |
540 | bcc_ptr = pByteArea(smb_buf); | |
541 | ||
790fe579 | 542 | if (smb_buf->WordCount == 4) { |
3979877e SF |
543 | __u16 blob_len; |
544 | blob_len = le16_to_cpu(pSMB->resp.SecurityBlobLength); | |
545 | bcc_ptr += blob_len; | |
790fe579 SF |
546 | if (blob_len > bytes_remaining) { |
547 | cERROR(1, ("bad security blob length %d", blob_len)); | |
3979877e SF |
548 | rc = -EINVAL; |
549 | goto ssetup_exit; | |
550 | } | |
551 | bytes_remaining -= blob_len; | |
790fe579 | 552 | } |
3979877e SF |
553 | |
554 | /* BB check if Unicode and decode strings */ | |
790fe579 | 555 | if (smb_buf->Flags2 & SMBFLG2_UNICODE) |
3979877e SF |
556 | rc = decode_unicode_ssetup(&bcc_ptr, bytes_remaining, |
557 | ses, nls_cp); | |
558 | else | |
63135e08 SF |
559 | rc = decode_ascii_ssetup(&bcc_ptr, bytes_remaining, |
560 | ses, nls_cp); | |
50c2f753 | 561 | |
3979877e | 562 | ssetup_exit: |
750d1151 | 563 | kfree(str_area); |
790fe579 SF |
564 | if (resp_buf_type == CIFS_SMALL_BUFFER) { |
565 | cFYI(1, ("ssetup freeing small buf %p", iov[0].iov_base)); | |
3979877e | 566 | cifs_small_buf_release(iov[0].iov_base); |
790fe579 | 567 | } else if (resp_buf_type == CIFS_LARGE_BUFFER) |
3979877e SF |
568 | cifs_buf_release(iov[0].iov_base); |
569 | ||
570 | return rc; | |
571 | } |