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1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
5815449d | 4 | * Copyright (C) International Business Machines Corp., 2002,2006 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library 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 | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | #include <linux/fs.h> | |
22 | #include <linux/net.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/ipv6.h> | |
27 | #include <linux/pagemap.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/utsname.h> | |
30 | #include <linux/mempool.h> | |
b8643e1b | 31 | #include <linux/delay.h> |
f191401f | 32 | #include <linux/completion.h> |
0ae0efad | 33 | #include <linux/pagevec.h> |
1da177e4 LT |
34 | #include <asm/uaccess.h> |
35 | #include <asm/processor.h> | |
36 | #include "cifspdu.h" | |
37 | #include "cifsglob.h" | |
38 | #include "cifsproto.h" | |
39 | #include "cifs_unicode.h" | |
40 | #include "cifs_debug.h" | |
41 | #include "cifs_fs_sb.h" | |
42 | #include "ntlmssp.h" | |
43 | #include "nterr.h" | |
44 | #include "rfc1002pdu.h" | |
a2653eba | 45 | #include "cn_cifs.h" |
1da177e4 LT |
46 | |
47 | #define CIFS_PORT 445 | |
48 | #define RFC1001_PORT 139 | |
49 | ||
f191401f SF |
50 | static DECLARE_COMPLETION(cifsd_complete); |
51 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ | |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
71 | unsigned rw:1; | |
72 | unsigned retry:1; | |
73 | unsigned intr:1; | |
74 | unsigned setuids:1; | |
75 | unsigned noperm:1; | |
76 | unsigned no_psx_acl:1; /* set if posix acl support should be disabled */ | |
0a4b92c0 | 77 | unsigned cifs_acl:1; |
1da177e4 LT |
78 | unsigned no_xattr:1; /* set if xattr (EA) support should be disabled*/ |
79 | unsigned server_ino:1; /* use inode numbers from server ie UniqueId */ | |
80 | unsigned direct_io:1; | |
6a0b4824 | 81 | unsigned remap:1; /* set to remap seven reserved chars in filenames */ |
ac67055e | 82 | unsigned posix_paths:1; /* unset to not ask for posix pathnames. */ |
d7245c2c | 83 | unsigned sfu_emul:1; |
bf820679 SF |
84 | unsigned krb5:1; |
85 | unsigned ntlm:1; | |
86 | unsigned ntlmv2:1; | |
87 | unsigned nullauth:1; /* attempt to authenticate with null user */ | |
88 | unsigned sign:1; | |
89 | unsigned seal:1; /* encrypt */ | |
c46fa8ac SF |
90 | unsigned nocase; /* request case insensitive filenames */ |
91 | unsigned nobrl; /* disable sending byte range locks to srv */ | |
1da177e4 LT |
92 | unsigned int rsize; |
93 | unsigned int wsize; | |
94 | unsigned int sockopt; | |
95 | unsigned short int port; | |
96 | }; | |
97 | ||
98 | static int ipv4_connect(struct sockaddr_in *psin_server, | |
99 | struct socket **csocket, | |
a10faeb2 SF |
100 | char * netb_name, |
101 | char * server_netb_name); | |
1da177e4 LT |
102 | static int ipv6_connect(struct sockaddr_in6 *psin_server, |
103 | struct socket **csocket); | |
104 | ||
105 | ||
106 | /* | |
107 | * cifs tcp session reconnection | |
108 | * | |
109 | * mark tcp session as reconnecting so temporarily locked | |
110 | * mark all smb sessions as reconnecting for tcp session | |
111 | * reconnect tcp session | |
112 | * wake up waiters on reconnection? - (not needed currently) | |
113 | */ | |
114 | ||
115 | int | |
116 | cifs_reconnect(struct TCP_Server_Info *server) | |
117 | { | |
118 | int rc = 0; | |
119 | struct list_head *tmp; | |
120 | struct cifsSesInfo *ses; | |
121 | struct cifsTconInfo *tcon; | |
122 | struct mid_q_entry * mid_entry; | |
123 | ||
124 | spin_lock(&GlobalMid_Lock); | |
125 | if(server->tcpStatus == CifsExiting) { | |
126 | /* the demux thread will exit normally | |
127 | next time through the loop */ | |
128 | spin_unlock(&GlobalMid_Lock); | |
129 | return rc; | |
130 | } else | |
131 | server->tcpStatus = CifsNeedReconnect; | |
132 | spin_unlock(&GlobalMid_Lock); | |
133 | server->maxBuf = 0; | |
134 | ||
e4eb295d | 135 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
136 | |
137 | /* before reconnecting the tcp session, mark the smb session (uid) | |
138 | and the tid bad so they are not used until reconnected */ | |
139 | read_lock(&GlobalSMBSeslock); | |
140 | list_for_each(tmp, &GlobalSMBSessionList) { | |
141 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
142 | if (ses->server) { | |
143 | if (ses->server == server) { | |
144 | ses->status = CifsNeedReconnect; | |
145 | ses->ipc_tid = 0; | |
146 | } | |
147 | } | |
148 | /* else tcp and smb sessions need reconnection */ | |
149 | } | |
150 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
151 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
152 | if((tcon) && (tcon->ses) && (tcon->ses->server == server)) { | |
153 | tcon->tidStatus = CifsNeedReconnect; | |
154 | } | |
155 | } | |
156 | read_unlock(&GlobalSMBSeslock); | |
157 | /* do not want to be sending data on a socket we are freeing */ | |
158 | down(&server->tcpSem); | |
159 | if(server->ssocket) { | |
160 | cFYI(1,("State: 0x%x Flags: 0x%lx", server->ssocket->state, | |
161 | server->ssocket->flags)); | |
162 | server->ssocket->ops->shutdown(server->ssocket,SEND_SHUTDOWN); | |
163 | cFYI(1,("Post shutdown state: 0x%x Flags: 0x%lx", server->ssocket->state, | |
164 | server->ssocket->flags)); | |
165 | sock_release(server->ssocket); | |
166 | server->ssocket = NULL; | |
167 | } | |
168 | ||
169 | spin_lock(&GlobalMid_Lock); | |
170 | list_for_each(tmp, &server->pending_mid_q) { | |
171 | mid_entry = list_entry(tmp, struct | |
172 | mid_q_entry, | |
173 | qhead); | |
174 | if(mid_entry) { | |
175 | if(mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
09d1db5c SF |
176 | /* Mark other intransit requests as needing |
177 | retry so we do not immediately mark the | |
178 | session bad again (ie after we reconnect | |
179 | below) as they timeout too */ | |
1da177e4 LT |
180 | mid_entry->midState = MID_RETRY_NEEDED; |
181 | } | |
182 | } | |
183 | } | |
184 | spin_unlock(&GlobalMid_Lock); | |
185 | up(&server->tcpSem); | |
186 | ||
187 | while ((server->tcpStatus != CifsExiting) && (server->tcpStatus != CifsGood)) | |
188 | { | |
189 | if(server->protocolType == IPV6) { | |
190 | rc = ipv6_connect(&server->addr.sockAddr6,&server->ssocket); | |
191 | } else { | |
192 | rc = ipv4_connect(&server->addr.sockAddr, | |
193 | &server->ssocket, | |
a10faeb2 SF |
194 | server->workstation_RFC1001_name, |
195 | server->server_RFC1001_name); | |
1da177e4 LT |
196 | } |
197 | if(rc) { | |
b387eaeb | 198 | cFYI(1,("reconnect error %d",rc)); |
0cb766ae | 199 | msleep(3000); |
1da177e4 LT |
200 | } else { |
201 | atomic_inc(&tcpSesReconnectCount); | |
202 | spin_lock(&GlobalMid_Lock); | |
203 | if(server->tcpStatus != CifsExiting) | |
204 | server->tcpStatus = CifsGood; | |
ad009ac9 SF |
205 | server->sequence_number = 0; |
206 | spin_unlock(&GlobalMid_Lock); | |
1da177e4 LT |
207 | /* atomic_set(&server->inFlight,0);*/ |
208 | wake_up(&server->response_q); | |
209 | } | |
210 | } | |
211 | return rc; | |
212 | } | |
213 | ||
e4eb295d SF |
214 | /* |
215 | return codes: | |
216 | 0 not a transact2, or all data present | |
217 | >0 transact2 with that much data missing | |
218 | -EINVAL = invalid transact2 | |
219 | ||
220 | */ | |
221 | static int check2ndT2(struct smb_hdr * pSMB, unsigned int maxBufSize) | |
222 | { | |
223 | struct smb_t2_rsp * pSMBt; | |
224 | int total_data_size; | |
225 | int data_in_this_rsp; | |
226 | int remaining; | |
227 | ||
228 | if(pSMB->Command != SMB_COM_TRANSACTION2) | |
229 | return 0; | |
230 | ||
231 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
232 | /* check for parm and data offset going beyond end of smb */ | |
233 | if(pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
234 | cFYI(1,("invalid transact2 word count")); | |
235 | return -EINVAL; | |
236 | } | |
237 | ||
238 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
239 | ||
240 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
241 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
242 | ||
243 | remaining = total_data_size - data_in_this_rsp; | |
244 | ||
245 | if(remaining == 0) | |
246 | return 0; | |
247 | else if(remaining < 0) { | |
248 | cFYI(1,("total data %d smaller than data in frame %d", | |
249 | total_data_size, data_in_this_rsp)); | |
250 | return -EINVAL; | |
251 | } else { | |
252 | cFYI(1,("missing %d bytes from transact2, check next response", | |
253 | remaining)); | |
254 | if(total_data_size > maxBufSize) { | |
255 | cERROR(1,("TotalDataSize %d is over maximum buffer %d", | |
256 | total_data_size,maxBufSize)); | |
257 | return -EINVAL; | |
258 | } | |
259 | return remaining; | |
260 | } | |
261 | } | |
262 | ||
263 | static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB) | |
264 | { | |
265 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
266 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
267 | int total_data_size; | |
268 | int total_in_buf; | |
269 | int remaining; | |
270 | int total_in_buf2; | |
271 | char * data_area_of_target; | |
272 | char * data_area_of_buf2; | |
273 | __u16 byte_count; | |
274 | ||
275 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
276 | ||
277 | if(total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { | |
278 | cFYI(1,("total data sizes of primary and secondary t2 differ")); | |
279 | } | |
280 | ||
281 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
282 | ||
283 | remaining = total_data_size - total_in_buf; | |
284 | ||
285 | if(remaining < 0) | |
286 | return -EINVAL; | |
287 | ||
288 | if(remaining == 0) /* nothing to do, ignore */ | |
289 | return 0; | |
290 | ||
291 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); | |
292 | if(remaining < total_in_buf2) { | |
293 | cFYI(1,("transact2 2nd response contains too much data")); | |
294 | } | |
295 | ||
296 | /* find end of first SMB data area */ | |
297 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + | |
298 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); | |
299 | /* validate target area */ | |
300 | ||
301 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
302 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); | |
303 | ||
304 | data_area_of_target += total_in_buf; | |
305 | ||
306 | /* copy second buffer into end of first buffer */ | |
307 | memcpy(data_area_of_target,data_area_of_buf2,total_in_buf2); | |
308 | total_in_buf += total_in_buf2; | |
309 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
310 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
311 | byte_count += total_in_buf2; | |
312 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
313 | ||
70ca734a | 314 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
315 | byte_count += total_in_buf2; |
316 | ||
317 | /* BB also add check that we are not beyond maximum buffer size */ | |
318 | ||
70ca734a | 319 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d SF |
320 | |
321 | if(remaining == total_in_buf2) { | |
322 | cFYI(1,("found the last secondary response")); | |
323 | return 0; /* we are done */ | |
324 | } else /* more responses to go */ | |
325 | return 1; | |
326 | ||
327 | } | |
328 | ||
1da177e4 LT |
329 | static int |
330 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
331 | { | |
332 | int length; | |
333 | unsigned int pdu_length, total_read; | |
334 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
335 | struct smb_hdr *bigbuf = NULL; |
336 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
337 | struct msghdr smb_msg; |
338 | struct kvec iov; | |
339 | struct socket *csocket = server->ssocket; | |
340 | struct list_head *tmp; | |
341 | struct cifsSesInfo *ses; | |
342 | struct task_struct *task_to_wake = NULL; | |
343 | struct mid_q_entry *mid_entry; | |
70ca734a | 344 | char temp; |
b8643e1b | 345 | int isLargeBuf = FALSE; |
e4eb295d SF |
346 | int isMultiRsp; |
347 | int reconnect; | |
1da177e4 LT |
348 | |
349 | daemonize("cifsd"); | |
350 | allow_signal(SIGKILL); | |
351 | current->flags |= PF_MEMALLOC; | |
352 | server->tsk = current; /* save process info to wake at shutdown */ | |
353 | cFYI(1, ("Demultiplex PID: %d", current->pid)); | |
354 | write_lock(&GlobalSMBSeslock); | |
355 | atomic_inc(&tcpSesAllocCount); | |
356 | length = tcpSesAllocCount.counter; | |
357 | write_unlock(&GlobalSMBSeslock); | |
f191401f | 358 | complete(&cifsd_complete); |
1da177e4 LT |
359 | if(length > 1) { |
360 | mempool_resize(cifs_req_poolp, | |
361 | length + cifs_min_rcv, | |
362 | GFP_KERNEL); | |
363 | } | |
364 | ||
365 | while (server->tcpStatus != CifsExiting) { | |
ede1327e SF |
366 | if (try_to_freeze()) |
367 | continue; | |
b8643e1b SF |
368 | if (bigbuf == NULL) { |
369 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
370 | if (!bigbuf) { |
371 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
372 | msleep(3000); |
373 | /* retry will check if exiting */ | |
374 | continue; | |
375 | } | |
0fd1ffe0 PM |
376 | } else if (isLargeBuf) { |
377 | /* we are reusing a dirty large buf, clear its start */ | |
b8643e1b | 378 | memset(bigbuf, 0, sizeof (struct smb_hdr)); |
1da177e4 | 379 | } |
b8643e1b SF |
380 | |
381 | if (smallbuf == NULL) { | |
382 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
383 | if (!smallbuf) { |
384 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
385 | msleep(1000); |
386 | /* retry will check if exiting */ | |
387 | continue; | |
388 | } | |
389 | /* beginning of smb buffer is cleared in our buf_get */ | |
390 | } else /* if existing small buf clear beginning */ | |
391 | memset(smallbuf, 0, sizeof (struct smb_hdr)); | |
392 | ||
393 | isLargeBuf = FALSE; | |
e4eb295d | 394 | isMultiRsp = FALSE; |
b8643e1b | 395 | smb_buffer = smallbuf; |
1da177e4 LT |
396 | iov.iov_base = smb_buffer; |
397 | iov.iov_len = 4; | |
398 | smb_msg.msg_control = NULL; | |
399 | smb_msg.msg_controllen = 0; | |
400 | length = | |
401 | kernel_recvmsg(csocket, &smb_msg, | |
402 | &iov, 1, 4, 0 /* BB see socket.h flags */); | |
403 | ||
0fd1ffe0 | 404 | if (server->tcpStatus == CifsExiting) { |
1da177e4 LT |
405 | break; |
406 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 407 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 408 | cifs_reconnect(server); |
0fd1ffe0 | 409 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
410 | csocket = server->ssocket; |
411 | continue; | |
412 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 413 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
414 | allowing socket to clear and app threads to set |
415 | tcpStatus CifsNeedReconnect if server hung */ | |
416 | continue; | |
417 | } else if (length <= 0) { | |
0fd1ffe0 PM |
418 | if (server->tcpStatus == CifsNew) { |
419 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
420 | /* some servers kill the TCP session rather than |
421 | returning an SMB negprot error, in which | |
422 | case reconnecting here is not going to help, | |
423 | and so simply return error to mount */ | |
1da177e4 LT |
424 | break; |
425 | } | |
0fd1ffe0 | 426 | if (!try_to_freeze() && (length == -EINTR)) { |
1da177e4 LT |
427 | cFYI(1,("cifsd thread killed")); |
428 | break; | |
429 | } | |
57337e42 SF |
430 | cFYI(1,("Reconnect after unexpected peek error %d", |
431 | length)); | |
1da177e4 LT |
432 | cifs_reconnect(server); |
433 | csocket = server->ssocket; | |
434 | wake_up(&server->response_q); | |
435 | continue; | |
46810cbf SF |
436 | } else if (length < 4) { |
437 | cFYI(1, | |
57337e42 | 438 | ("Frame under four bytes received (%d bytes long)", |
46810cbf SF |
439 | length)); |
440 | cifs_reconnect(server); | |
441 | csocket = server->ssocket; | |
442 | wake_up(&server->response_q); | |
443 | continue; | |
444 | } | |
1da177e4 | 445 | |
70ca734a SF |
446 | /* The right amount was read from socket - 4 bytes */ |
447 | /* so we can now interpret the length field */ | |
46810cbf | 448 | |
70ca734a SF |
449 | /* the first byte big endian of the length field, |
450 | is actually not part of the length but the type | |
451 | with the most common, zero, as regular data */ | |
452 | temp = *((char *) smb_buffer); | |
46810cbf | 453 | |
70ca734a SF |
454 | /* Note that FC 1001 length is big endian on the wire, |
455 | but we convert it here so it is always manipulated | |
456 | as host byte order */ | |
46810cbf | 457 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
458 | smb_buffer->smb_buf_length = pdu_length; |
459 | ||
460 | cFYI(1,("rfc1002 length 0x%x)", pdu_length+4)); | |
46810cbf | 461 | |
70ca734a | 462 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
e4eb295d | 463 | continue; |
70ca734a | 464 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
e4eb295d SF |
465 | cFYI(1,("Good RFC 1002 session rsp")); |
466 | continue; | |
70ca734a | 467 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
46810cbf SF |
468 | /* we get this from Windows 98 instead of |
469 | an error on SMB negprot response */ | |
e4eb295d | 470 | cFYI(1,("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 471 | pdu_length)); |
46810cbf SF |
472 | if(server->tcpStatus == CifsNew) { |
473 | /* if nack on negprot (rather than | |
474 | ret of smb negprot error) reconnecting | |
475 | not going to help, ret error to mount */ | |
476 | break; | |
477 | } else { | |
478 | /* give server a second to | |
479 | clean up before reconnect attempt */ | |
480 | msleep(1000); | |
481 | /* always try 445 first on reconnect | |
482 | since we get NACK on some if we ever | |
483 | connected to port 139 (the NACK is | |
484 | since we do not begin with RFC1001 | |
485 | session initialize frame) */ | |
486 | server->addr.sockAddr.sin_port = | |
487 | htons(CIFS_PORT); | |
1da177e4 LT |
488 | cifs_reconnect(server); |
489 | csocket = server->ssocket; | |
46810cbf | 490 | wake_up(&server->response_q); |
1da177e4 | 491 | continue; |
46810cbf | 492 | } |
70ca734a | 493 | } else if (temp != (char) 0) { |
46810cbf | 494 | cERROR(1,("Unknown RFC 1002 frame")); |
70ca734a SF |
495 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
496 | length); | |
46810cbf SF |
497 | cifs_reconnect(server); |
498 | csocket = server->ssocket; | |
499 | continue; | |
e4eb295d SF |
500 | } |
501 | ||
502 | /* else we have an SMB response */ | |
503 | if((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || | |
46810cbf | 504 | (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) { |
e4eb295d | 505 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 506 | length, pdu_length+4)); |
e4eb295d SF |
507 | cifs_reconnect(server); |
508 | csocket = server->ssocket; | |
509 | wake_up(&server->response_q); | |
510 | continue; | |
511 | } | |
512 | ||
513 | /* else length ok */ | |
514 | reconnect = 0; | |
515 | ||
ec637e3f | 516 | if(pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
e4eb295d SF |
517 | isLargeBuf = TRUE; |
518 | memcpy(bigbuf, smallbuf, 4); | |
519 | smb_buffer = bigbuf; | |
520 | } | |
521 | length = 0; | |
522 | iov.iov_base = 4 + (char *)smb_buffer; | |
523 | iov.iov_len = pdu_length; | |
524 | for (total_read = 0; total_read < pdu_length; | |
525 | total_read += length) { | |
526 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
527 | pdu_length - total_read, 0); | |
528 | if((server->tcpStatus == CifsExiting) || | |
529 | (length == -EINTR)) { | |
530 | /* then will exit */ | |
531 | reconnect = 2; | |
532 | break; | |
533 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
534 | cifs_reconnect(server); |
535 | csocket = server->ssocket; | |
e4eb295d SF |
536 | /* Reconnect wakes up rspns q */ |
537 | /* Now we will reread sock */ | |
538 | reconnect = 1; | |
539 | break; | |
540 | } else if ((length == -ERESTARTSYS) || | |
541 | (length == -EAGAIN)) { | |
542 | msleep(1); /* minimum sleep to prevent looping, | |
543 | allowing socket to clear and app | |
544 | threads to set tcpStatus | |
545 | CifsNeedReconnect if server hung*/ | |
46810cbf | 546 | continue; |
e4eb295d SF |
547 | } else if (length <= 0) { |
548 | cERROR(1,("Received no data, expecting %d", | |
549 | pdu_length - total_read)); | |
550 | cifs_reconnect(server); | |
551 | csocket = server->ssocket; | |
552 | reconnect = 1; | |
553 | break; | |
46810cbf | 554 | } |
e4eb295d SF |
555 | } |
556 | if(reconnect == 2) | |
557 | break; | |
558 | else if(reconnect == 1) | |
559 | continue; | |
1da177e4 | 560 | |
e4eb295d SF |
561 | length += 4; /* account for rfc1002 hdr */ |
562 | ||
09d1db5c | 563 | |
e4eb295d | 564 | dump_smb(smb_buffer, length); |
184ed211 | 565 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 566 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
567 | continue; |
568 | } | |
1da177e4 | 569 | |
e4eb295d SF |
570 | |
571 | task_to_wake = NULL; | |
572 | spin_lock(&GlobalMid_Lock); | |
573 | list_for_each(tmp, &server->pending_mid_q) { | |
574 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
575 | ||
576 | if ((mid_entry->mid == smb_buffer->Mid) && | |
577 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && | |
578 | (mid_entry->command == smb_buffer->Command)) { | |
e4eb295d SF |
579 | if(check2ndT2(smb_buffer,server->maxBuf) > 0) { |
580 | /* We have a multipart transact2 resp */ | |
cd63499c | 581 | isMultiRsp = TRUE; |
e4eb295d SF |
582 | if(mid_entry->resp_buf) { |
583 | /* merge response - fix up 1st*/ | |
584 | if(coalesce_t2(smb_buffer, | |
585 | mid_entry->resp_buf)) { | |
3979877e | 586 | mid_entry->multiRsp = 1; |
e4eb295d SF |
587 | break; |
588 | } else { | |
589 | /* all parts received */ | |
3979877e | 590 | mid_entry->multiEnd = 1; |
e4eb295d SF |
591 | goto multi_t2_fnd; |
592 | } | |
593 | } else { | |
594 | if(!isLargeBuf) { | |
595 | cERROR(1,("1st trans2 resp needs bigbuf")); | |
596 | /* BB maybe we can fix this up, switch | |
597 | to already allocated large buffer? */ | |
598 | } else { | |
cd63499c | 599 | /* Have first buffer */ |
e4eb295d SF |
600 | mid_entry->resp_buf = |
601 | smb_buffer; | |
602 | mid_entry->largeBuf = 1; | |
e4eb295d SF |
603 | bigbuf = NULL; |
604 | } | |
605 | } | |
606 | break; | |
607 | } | |
608 | mid_entry->resp_buf = smb_buffer; | |
46810cbf | 609 | if(isLargeBuf) |
e4eb295d | 610 | mid_entry->largeBuf = 1; |
46810cbf | 611 | else |
e4eb295d SF |
612 | mid_entry->largeBuf = 0; |
613 | multi_t2_fnd: | |
614 | task_to_wake = mid_entry->tsk; | |
615 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
616 | #ifdef CONFIG_CIFS_STATS2 |
617 | mid_entry->when_received = jiffies; | |
618 | #endif | |
e4eb295d | 619 | break; |
46810cbf | 620 | } |
1da177e4 | 621 | } |
e4eb295d SF |
622 | spin_unlock(&GlobalMid_Lock); |
623 | if (task_to_wake) { | |
cd63499c SF |
624 | /* Was previous buf put in mpx struct for multi-rsp? */ |
625 | if(!isMultiRsp) { | |
626 | /* smb buffer will be freed by user thread */ | |
627 | if(isLargeBuf) { | |
628 | bigbuf = NULL; | |
629 | } else | |
630 | smallbuf = NULL; | |
631 | } | |
e4eb295d | 632 | wake_up_process(task_to_wake); |
d7c8c94d | 633 | } else if ((is_valid_oplock_break(smb_buffer, server) == FALSE) |
e4eb295d | 634 | && (isMultiRsp == FALSE)) { |
3979877e | 635 | cERROR(1, ("No task to wake, unknown frame rcvd! NumMids %d", midCount.counter)); |
70ca734a SF |
636 | cifs_dump_mem("Received Data is: ",(char *)smb_buffer, |
637 | sizeof(struct smb_hdr)); | |
3979877e SF |
638 | #ifdef CONFIG_CIFS_DEBUG2 |
639 | cifs_dump_detail(smb_buffer); | |
640 | cifs_dump_mids(server); | |
641 | #endif /* CIFS_DEBUG2 */ | |
642 | ||
e4eb295d SF |
643 | } |
644 | } /* end while !EXITING */ | |
645 | ||
1da177e4 LT |
646 | spin_lock(&GlobalMid_Lock); |
647 | server->tcpStatus = CifsExiting; | |
648 | server->tsk = NULL; | |
31ca3bc3 SF |
649 | /* check if we have blocked requests that need to free */ |
650 | /* Note that cifs_max_pending is normally 50, but | |
651 | can be set at module install time to as little as two */ | |
652 | if(atomic_read(&server->inFlight) >= cifs_max_pending) | |
653 | atomic_set(&server->inFlight, cifs_max_pending - 1); | |
654 | /* We do not want to set the max_pending too low or we | |
655 | could end up with the counter going negative */ | |
1da177e4 LT |
656 | spin_unlock(&GlobalMid_Lock); |
657 | /* Although there should not be any requests blocked on | |
658 | this queue it can not hurt to be paranoid and try to wake up requests | |
09d1db5c | 659 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
660 | to the same server - they now will see the session is in exit state |
661 | and get out of SendReceive. */ | |
662 | wake_up_all(&server->request_q); | |
663 | /* give those requests time to exit */ | |
b8643e1b SF |
664 | msleep(125); |
665 | ||
1da177e4 LT |
666 | if(server->ssocket) { |
667 | sock_release(csocket); | |
668 | server->ssocket = NULL; | |
669 | } | |
b8643e1b SF |
670 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
671 | if (bigbuf != NULL) | |
672 | cifs_buf_release(bigbuf); | |
673 | if (smallbuf != NULL) | |
674 | cifs_small_buf_release(smallbuf); | |
1da177e4 LT |
675 | |
676 | read_lock(&GlobalSMBSeslock); | |
677 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
678 | /* loop through server session structures attached to this and |
679 | mark them dead */ | |
1da177e4 LT |
680 | list_for_each(tmp, &GlobalSMBSessionList) { |
681 | ses = | |
682 | list_entry(tmp, struct cifsSesInfo, | |
683 | cifsSessionList); | |
684 | if (ses->server == server) { | |
685 | ses->status = CifsExiting; | |
686 | ses->server = NULL; | |
687 | } | |
688 | } | |
689 | read_unlock(&GlobalSMBSeslock); | |
690 | } else { | |
31ca3bc3 SF |
691 | /* although we can not zero the server struct pointer yet, |
692 | since there are active requests which may depnd on them, | |
693 | mark the corresponding SMB sessions as exiting too */ | |
694 | list_for_each(tmp, &GlobalSMBSessionList) { | |
695 | ses = list_entry(tmp, struct cifsSesInfo, | |
696 | cifsSessionList); | |
697 | if (ses->server == server) { | |
698 | ses->status = CifsExiting; | |
699 | } | |
700 | } | |
701 | ||
1da177e4 LT |
702 | spin_lock(&GlobalMid_Lock); |
703 | list_for_each(tmp, &server->pending_mid_q) { | |
704 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
705 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
706 | cFYI(1, | |
09d1db5c | 707 | ("Clearing Mid 0x%x - waking up ",mid_entry->mid)); |
1da177e4 LT |
708 | task_to_wake = mid_entry->tsk; |
709 | if(task_to_wake) { | |
710 | wake_up_process(task_to_wake); | |
711 | } | |
712 | } | |
713 | } | |
714 | spin_unlock(&GlobalMid_Lock); | |
715 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 716 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 717 | msleep(125); |
1da177e4 LT |
718 | } |
719 | ||
f191401f | 720 | if (!list_empty(&server->pending_mid_q)) { |
1da177e4 LT |
721 | /* mpx threads have not exited yet give them |
722 | at least the smb send timeout time for long ops */ | |
31ca3bc3 SF |
723 | /* due to delays on oplock break requests, we need |
724 | to wait at least 45 seconds before giving up | |
725 | on a request getting a response and going ahead | |
726 | and killing cifsd */ | |
1da177e4 | 727 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 728 | msleep(46000); |
1da177e4 LT |
729 | /* if threads still have not exited they are probably never |
730 | coming home not much else we can do but free the memory */ | |
731 | } | |
1da177e4 LT |
732 | |
733 | write_lock(&GlobalSMBSeslock); | |
734 | atomic_dec(&tcpSesAllocCount); | |
735 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
736 | |
737 | /* last chance to mark ses pointers invalid | |
738 | if there are any pointing to this (e.g | |
739 | if a crazy root user tried to kill cifsd | |
740 | kernel thread explicitly this might happen) */ | |
741 | list_for_each(tmp, &GlobalSMBSessionList) { | |
742 | ses = list_entry(tmp, struct cifsSesInfo, | |
743 | cifsSessionList); | |
744 | if (ses->server == server) { | |
745 | ses->server = NULL; | |
746 | } | |
747 | } | |
1da177e4 | 748 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 SF |
749 | |
750 | kfree(server); | |
1da177e4 LT |
751 | if(length > 0) { |
752 | mempool_resize(cifs_req_poolp, | |
753 | length + cifs_min_rcv, | |
754 | GFP_KERNEL); | |
755 | } | |
b8643e1b | 756 | |
f191401f | 757 | complete_and_exit(&cifsd_complete, 0); |
1da177e4 LT |
758 | return 0; |
759 | } | |
760 | ||
1da177e4 LT |
761 | static int |
762 | cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) | |
763 | { | |
764 | char *value; | |
765 | char *data; | |
766 | unsigned int temp_len, i, j; | |
767 | char separator[2]; | |
768 | ||
769 | separator[0] = ','; | |
770 | separator[1] = 0; | |
771 | ||
772 | memset(vol->source_rfc1001_name,0x20,15); | |
773 | for(i=0;i < strnlen(system_utsname.nodename,15);i++) { | |
774 | /* does not have to be a perfect mapping since the field is | |
775 | informational, only used for servers that do not support | |
776 | port 445 and it can be overridden at mount time */ | |
09d1db5c SF |
777 | vol->source_rfc1001_name[i] = |
778 | toupper(system_utsname.nodename[i]); | |
1da177e4 LT |
779 | } |
780 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
781 | /* null target name indicates to use *SMBSERVR default called name |
782 | if we end up sending RFC1001 session initialize */ | |
783 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
784 | vol->linux_uid = current->uid; /* current->euid instead? */ |
785 | vol->linux_gid = current->gid; | |
786 | vol->dir_mode = S_IRWXUGO; | |
787 | /* 2767 perms indicate mandatory locking support */ | |
788 | vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); | |
789 | ||
790 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
791 | vol->rw = TRUE; | |
bf820679 | 792 | vol->ntlm = TRUE; |
ac67055e JA |
793 | /* default is always to request posix paths. */ |
794 | vol->posix_paths = 1; | |
795 | ||
1da177e4 LT |
796 | if (!options) |
797 | return 1; | |
798 | ||
799 | if(strncmp(options,"sep=",4) == 0) { | |
800 | if(options[4] != 0) { | |
801 | separator[0] = options[4]; | |
802 | options += 5; | |
803 | } else { | |
804 | cFYI(1,("Null separator not allowed")); | |
805 | } | |
806 | } | |
807 | ||
808 | while ((data = strsep(&options, separator)) != NULL) { | |
809 | if (!*data) | |
810 | continue; | |
811 | if ((value = strchr(data, '=')) != NULL) | |
812 | *value++ = '\0'; | |
813 | ||
814 | if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/ | |
815 | vol->no_xattr = 0; | |
816 | } else if (strnicmp(data, "nouser_xattr",12) == 0) { | |
817 | vol->no_xattr = 1; | |
818 | } else if (strnicmp(data, "user", 4) == 0) { | |
819 | if (!value || !*value) { | |
820 | printk(KERN_WARNING | |
821 | "CIFS: invalid or missing username\n"); | |
822 | return 1; /* needs_arg; */ | |
823 | } | |
824 | if (strnlen(value, 200) < 200) { | |
825 | vol->username = value; | |
826 | } else { | |
827 | printk(KERN_WARNING "CIFS: username too long\n"); | |
828 | return 1; | |
829 | } | |
830 | } else if (strnicmp(data, "pass", 4) == 0) { | |
831 | if (!value) { | |
832 | vol->password = NULL; | |
833 | continue; | |
834 | } else if(value[0] == 0) { | |
835 | /* check if string begins with double comma | |
836 | since that would mean the password really | |
837 | does start with a comma, and would not | |
838 | indicate an empty string */ | |
839 | if(value[1] != separator[0]) { | |
840 | vol->password = NULL; | |
841 | continue; | |
842 | } | |
843 | } | |
844 | temp_len = strlen(value); | |
845 | /* removed password length check, NTLM passwords | |
846 | can be arbitrarily long */ | |
847 | ||
848 | /* if comma in password, the string will be | |
849 | prematurely null terminated. Commas in password are | |
850 | specified across the cifs mount interface by a double | |
851 | comma ie ,, and a comma used as in other cases ie ',' | |
852 | as a parameter delimiter/separator is single and due | |
853 | to the strsep above is temporarily zeroed. */ | |
854 | ||
855 | /* NB: password legally can have multiple commas and | |
856 | the only illegal character in a password is null */ | |
857 | ||
09d1db5c SF |
858 | if ((value[temp_len] == 0) && |
859 | (value[temp_len+1] == separator[0])) { | |
1da177e4 LT |
860 | /* reinsert comma */ |
861 | value[temp_len] = separator[0]; | |
862 | temp_len+=2; /* move after the second comma */ | |
863 | while(value[temp_len] != 0) { | |
864 | if (value[temp_len] == separator[0]) { | |
09d1db5c SF |
865 | if (value[temp_len+1] == |
866 | separator[0]) { | |
867 | /* skip second comma */ | |
868 | temp_len++; | |
1da177e4 LT |
869 | } else { |
870 | /* single comma indicating start | |
871 | of next parm */ | |
872 | break; | |
873 | } | |
874 | } | |
875 | temp_len++; | |
876 | } | |
877 | if(value[temp_len] == 0) { | |
878 | options = NULL; | |
879 | } else { | |
880 | value[temp_len] = 0; | |
881 | /* point option to start of next parm */ | |
882 | options = value + temp_len + 1; | |
883 | } | |
884 | /* go from value to value + temp_len condensing | |
885 | double commas to singles. Note that this ends up | |
886 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 887 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
433dc24f SF |
888 | if(vol->password == NULL) { |
889 | printk("CIFS: no memory for pass\n"); | |
890 | return 1; | |
891 | } | |
1da177e4 LT |
892 | for(i=0,j=0;i<temp_len;i++,j++) { |
893 | vol->password[j] = value[i]; | |
09d1db5c SF |
894 | if(value[i] == separator[0] |
895 | && value[i+1] == separator[0]) { | |
1da177e4 LT |
896 | /* skip second comma */ |
897 | i++; | |
898 | } | |
899 | } | |
900 | vol->password[j] = 0; | |
901 | } else { | |
e915fc49 | 902 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
433dc24f SF |
903 | if(vol->password == NULL) { |
904 | printk("CIFS: no memory for pass\n"); | |
905 | return 1; | |
906 | } | |
1da177e4 LT |
907 | strcpy(vol->password, value); |
908 | } | |
909 | } else if (strnicmp(data, "ip", 2) == 0) { | |
910 | if (!value || !*value) { | |
911 | vol->UNCip = NULL; | |
912 | } else if (strnlen(value, 35) < 35) { | |
913 | vol->UNCip = value; | |
914 | } else { | |
915 | printk(KERN_WARNING "CIFS: ip address too long\n"); | |
916 | return 1; | |
917 | } | |
bf820679 SF |
918 | } else if (strnicmp(data, "sec", 3) == 0) { |
919 | if (!value || !*value) { | |
920 | cERROR(1,("no security value specified")); | |
921 | continue; | |
922 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
923 | vol->sign = 1; | |
924 | vol->krb5 = 1; | |
925 | } else if (strnicmp(value, "krb5p", 5) == 0) { | |
926 | /* vol->seal = 1; | |
927 | vol->krb5 = 1; */ | |
928 | cERROR(1,("Krb5 cifs privacy not supported")); | |
929 | return 1; | |
930 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
931 | vol->krb5 = 1; | |
932 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { | |
933 | vol->ntlmv2 = 1; | |
934 | vol->sign = 1; | |
935 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { | |
936 | vol->ntlmv2 = 1; | |
937 | } else if (strnicmp(value, "ntlmi", 5) == 0) { | |
938 | vol->ntlm = 1; | |
939 | vol->sign = 1; | |
940 | } else if (strnicmp(value, "ntlm", 4) == 0) { | |
941 | /* ntlm is default so can be turned off too */ | |
942 | vol->ntlm = 1; | |
943 | } else if (strnicmp(value, "nontlm", 6) == 0) { | |
944 | vol->ntlm = 0; | |
945 | } else if (strnicmp(value, "none", 4) == 0) { | |
946 | vol->nullauth = 1; | |
947 | } else { | |
948 | cERROR(1,("bad security option: %s", value)); | |
949 | return 1; | |
950 | } | |
1da177e4 LT |
951 | } else if ((strnicmp(data, "unc", 3) == 0) |
952 | || (strnicmp(data, "target", 6) == 0) | |
953 | || (strnicmp(data, "path", 4) == 0)) { | |
954 | if (!value || !*value) { | |
955 | printk(KERN_WARNING | |
956 | "CIFS: invalid path to network resource\n"); | |
957 | return 1; /* needs_arg; */ | |
958 | } | |
959 | if ((temp_len = strnlen(value, 300)) < 300) { | |
960 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
961 | if(vol->UNC == NULL) | |
962 | return 1; | |
963 | strcpy(vol->UNC,value); | |
964 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
965 | vol->UNC[0] = '\\'; | |
966 | vol->UNC[1] = '\\'; | |
967 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
968 | printk(KERN_WARNING | |
969 | "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
970 | return 1; | |
971 | } | |
972 | } else { | |
973 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
974 | return 1; | |
975 | } | |
976 | } else if ((strnicmp(data, "domain", 3) == 0) | |
977 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
978 | if (!value || !*value) { | |
979 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
980 | return 1; /* needs_arg; */ | |
981 | } | |
982 | /* BB are there cases in which a comma can be valid in | |
983 | a domain name and need special handling? */ | |
3979877e | 984 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
985 | vol->domainname = value; |
986 | cFYI(1, ("Domain name set")); | |
987 | } else { | |
988 | printk(KERN_WARNING "CIFS: domain name too long\n"); | |
989 | return 1; | |
990 | } | |
991 | } else if (strnicmp(data, "iocharset", 9) == 0) { | |
992 | if (!value || !*value) { | |
993 | printk(KERN_WARNING "CIFS: invalid iocharset specified\n"); | |
994 | return 1; /* needs_arg; */ | |
995 | } | |
996 | if (strnlen(value, 65) < 65) { | |
997 | if(strnicmp(value,"default",7)) | |
998 | vol->iocharset = value; | |
999 | /* if iocharset not set load_nls_default used by caller */ | |
1000 | cFYI(1, ("iocharset set to %s",value)); | |
1001 | } else { | |
1002 | printk(KERN_WARNING "CIFS: iocharset name too long.\n"); | |
1003 | return 1; | |
1004 | } | |
1005 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1006 | if (value && *value) { | |
1007 | vol->linux_uid = | |
1008 | simple_strtoul(value, &value, 0); | |
1009 | } | |
1010 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1011 | if (value && *value) { | |
1012 | vol->linux_gid = | |
1013 | simple_strtoul(value, &value, 0); | |
1014 | } | |
1015 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1016 | if (value && *value) { | |
1017 | vol->file_mode = | |
1018 | simple_strtoul(value, &value, 0); | |
1019 | } | |
1020 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1021 | if (value && *value) { | |
1022 | vol->dir_mode = | |
1023 | simple_strtoul(value, &value, 0); | |
1024 | } | |
1025 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1026 | if (value && *value) { | |
1027 | vol->dir_mode = | |
1028 | simple_strtoul(value, &value, 0); | |
1029 | } | |
1030 | } else if (strnicmp(data, "port", 4) == 0) { | |
1031 | if (value && *value) { | |
1032 | vol->port = | |
1033 | simple_strtoul(value, &value, 0); | |
1034 | } | |
1035 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1036 | if (value && *value) { | |
1037 | vol->rsize = | |
1038 | simple_strtoul(value, &value, 0); | |
1039 | } | |
1040 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1041 | if (value && *value) { | |
1042 | vol->wsize = | |
1043 | simple_strtoul(value, &value, 0); | |
1044 | } | |
1045 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1046 | if (value && *value) { | |
1047 | vol->sockopt = | |
1048 | simple_strtoul(value, &value, 0); | |
1049 | } | |
1050 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1051 | if (!value || !*value || (*value == ' ')) { | |
1052 | cFYI(1,("invalid (empty) netbiosname specified")); | |
1053 | } else { | |
1054 | memset(vol->source_rfc1001_name,0x20,15); | |
1055 | for(i=0;i<15;i++) { | |
1056 | /* BB are there cases in which a comma can be | |
1057 | valid in this workstation netbios name (and need | |
1058 | special handling)? */ | |
1059 | ||
1060 | /* We do not uppercase netbiosname for user */ | |
1061 | if (value[i]==0) | |
1062 | break; | |
1063 | else | |
1064 | vol->source_rfc1001_name[i] = value[i]; | |
1065 | } | |
1066 | /* The string has 16th byte zero still from | |
1067 | set at top of the function */ | |
1068 | if((i==15) && (value[i] != 0)) | |
a10faeb2 SF |
1069 | printk(KERN_WARNING "CIFS: netbiosname longer than 15 truncated.\n"); |
1070 | } | |
1071 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1072 | /* servernetbiosname specified override *SMBSERVER */ | |
1073 | if (!value || !*value || (*value == ' ')) { | |
1074 | cFYI(1,("empty server netbiosname specified")); | |
1075 | } else { | |
1076 | /* last byte, type, is 0x20 for servr type */ | |
1077 | memset(vol->target_rfc1001_name,0x20,16); | |
1078 | ||
1079 | for(i=0;i<15;i++) { | |
1080 | /* BB are there cases in which a comma can be | |
1081 | valid in this workstation netbios name (and need | |
1082 | special handling)? */ | |
1083 | ||
1084 | /* user or mount helper must uppercase netbiosname */ | |
1085 | if (value[i]==0) | |
1086 | break; | |
1087 | else | |
1088 | vol->target_rfc1001_name[i] = value[i]; | |
1089 | } | |
1090 | /* The string has 16th byte zero still from | |
1091 | set at top of the function */ | |
1092 | if((i==15) && (value[i] != 0)) | |
1093 | printk(KERN_WARNING "CIFS: server netbiosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1094 | } |
1095 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1096 | /* ignore */ | |
1097 | } else if (strnicmp(data, "version", 3) == 0) { | |
1098 | /* ignore */ | |
1099 | } else if (strnicmp(data, "guest",5) == 0) { | |
1100 | /* ignore */ | |
1101 | } else if (strnicmp(data, "rw", 2) == 0) { | |
1102 | vol->rw = TRUE; | |
1103 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
1104 | (strnicmp(data, "nosuid", 6) == 0) || | |
1105 | (strnicmp(data, "exec", 4) == 0) || | |
1106 | (strnicmp(data, "noexec", 6) == 0) || | |
1107 | (strnicmp(data, "nodev", 5) == 0) || | |
1108 | (strnicmp(data, "noauto", 6) == 0) || | |
1109 | (strnicmp(data, "dev", 3) == 0)) { | |
1110 | /* The mount tool or mount.cifs helper (if present) | |
1111 | uses these opts to set flags, and the flags are read | |
1112 | by the kernel vfs layer before we get here (ie | |
1113 | before read super) so there is no point trying to | |
1114 | parse these options again and set anything and it | |
1115 | is ok to just ignore them */ | |
1116 | continue; | |
1117 | } else if (strnicmp(data, "ro", 2) == 0) { | |
1118 | vol->rw = FALSE; | |
1119 | } else if (strnicmp(data, "hard", 4) == 0) { | |
1120 | vol->retry = 1; | |
1121 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1122 | vol->retry = 0; | |
1123 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1124 | vol->noperm = 0; | |
1125 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1126 | vol->noperm = 1; | |
6a0b4824 SF |
1127 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1128 | vol->remap = 1; | |
1129 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1130 | vol->remap = 0; | |
d7245c2c SF |
1131 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1132 | vol->sfu_emul = 1; | |
1133 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1134 | vol->sfu_emul = 0; | |
ac67055e JA |
1135 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1136 | vol->posix_paths = 1; | |
1137 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1138 | vol->posix_paths = 0; | |
a10faeb2 SF |
1139 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
1140 | (strnicmp(data, "ignorecase", 10) == 0)) { | |
c46fa8ac SF |
1141 | vol->nocase = 1; |
1142 | } else if (strnicmp(data, "brl", 3) == 0) { | |
1143 | vol->nobrl = 0; | |
cb8be640 | 1144 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1145 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1146 | vol->nobrl = 1; |
d3485d37 SF |
1147 | /* turn off mandatory locking in mode |
1148 | if remote locking is turned off since the | |
1149 | local vfs will do advisory */ | |
1150 | if(vol->file_mode == (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
1151 | vol->file_mode = S_IALLUGO; | |
1da177e4 LT |
1152 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1153 | vol->setuids = 1; | |
1154 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1155 | vol->setuids = 0; | |
1156 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
1157 | vol->retry = 0; | |
1158 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1159 | vol->retry = 1; | |
1160 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1161 | vol->intr = 0; | |
1162 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1163 | vol->intr = 1; | |
1164 | } else if (strnicmp(data, "serverino",7) == 0) { | |
1165 | vol->server_ino = 1; | |
1166 | } else if (strnicmp(data, "noserverino",9) == 0) { | |
1167 | vol->server_ino = 0; | |
0a4b92c0 SF |
1168 | } else if (strnicmp(data, "cifsacl",7) == 0) { |
1169 | vol->cifs_acl = 1; | |
1170 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1171 | vol->cifs_acl = 0; | |
1da177e4 LT |
1172 | } else if (strnicmp(data, "acl",3) == 0) { |
1173 | vol->no_psx_acl = 0; | |
1174 | } else if (strnicmp(data, "noacl",5) == 0) { | |
1175 | vol->no_psx_acl = 1; | |
1176 | } else if (strnicmp(data, "direct",6) == 0) { | |
1177 | vol->direct_io = 1; | |
1178 | } else if (strnicmp(data, "forcedirectio",13) == 0) { | |
1179 | vol->direct_io = 1; | |
1180 | } else if (strnicmp(data, "in6_addr",8) == 0) { | |
1181 | if (!value || !*value) { | |
1182 | vol->in6_addr = NULL; | |
1183 | } else if (strnlen(value, 49) == 48) { | |
1184 | vol->in6_addr = value; | |
1185 | } else { | |
1186 | printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n"); | |
1187 | return 1; | |
1188 | } | |
1189 | } else if (strnicmp(data, "noac", 4) == 0) { | |
1190 | printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1191 | } else | |
1192 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data); | |
1193 | } | |
1194 | if (vol->UNC == NULL) { | |
1195 | if(devname == NULL) { | |
1196 | printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n"); | |
1197 | return 1; | |
1198 | } | |
1199 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
1200 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
1201 | if(vol->UNC == NULL) | |
1202 | return 1; | |
1203 | strcpy(vol->UNC,devname); | |
1204 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
1205 | vol->UNC[0] = '\\'; | |
1206 | vol->UNC[1] = '\\'; | |
1207 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
1208 | printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
1209 | return 1; | |
1210 | } | |
1211 | } else { | |
1212 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1213 | return 1; | |
1214 | } | |
1215 | } | |
1216 | if(vol->UNCip == NULL) | |
1217 | vol->UNCip = &vol->UNC[2]; | |
1218 | ||
1219 | return 0; | |
1220 | } | |
1221 | ||
1222 | static struct cifsSesInfo * | |
1223 | cifs_find_tcp_session(struct in_addr * target_ip_addr, | |
1224 | struct in6_addr *target_ip6_addr, | |
1225 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1226 | { | |
1227 | struct list_head *tmp; | |
1228 | struct cifsSesInfo *ses; | |
1229 | *psrvTcp = NULL; | |
1230 | read_lock(&GlobalSMBSeslock); | |
1231 | ||
1232 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1233 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1234 | if (ses->server) { | |
1235 | if((target_ip_addr && | |
1236 | (ses->server->addr.sockAddr.sin_addr.s_addr | |
1237 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1238 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1239 | target_ip6_addr,sizeof(*target_ip6_addr)))){ | |
1240 | /* BB lock server and tcp session and increment use count here?? */ | |
1241 | *psrvTcp = ses->server; /* found a match on the TCP session */ | |
1242 | /* BB check if reconnection needed */ | |
1243 | if (strncmp | |
1244 | (ses->userName, userName, | |
1245 | MAX_USERNAME_SIZE) == 0){ | |
1246 | read_unlock(&GlobalSMBSeslock); | |
1247 | return ses; /* found exact match on both tcp and SMB sessions */ | |
1248 | } | |
1249 | } | |
1250 | } | |
1251 | /* else tcp and smb sessions need reconnection */ | |
1252 | } | |
1253 | read_unlock(&GlobalSMBSeslock); | |
1254 | return NULL; | |
1255 | } | |
1256 | ||
1257 | static struct cifsTconInfo * | |
1258 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1259 | { | |
1260 | struct list_head *tmp; | |
1261 | struct cifsTconInfo *tcon; | |
1262 | ||
1263 | read_lock(&GlobalSMBSeslock); | |
1264 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
1265 | cFYI(1, ("Next tcon - ")); | |
1266 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
1267 | if (tcon->ses) { | |
1268 | if (tcon->ses->server) { | |
1269 | cFYI(1, | |
1270 | (" old ip addr: %x == new ip %x ?", | |
1271 | tcon->ses->server->addr.sockAddr.sin_addr. | |
1272 | s_addr, new_target_ip_addr)); | |
1273 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
1274 | s_addr == new_target_ip_addr) { | |
1275 | /* BB lock tcon and server and tcp session and increment use count here? */ | |
1276 | /* found a match on the TCP session */ | |
1277 | /* BB check if reconnection needed */ | |
1278 | cFYI(1,("Matched ip, old UNC: %s == new: %s ?", | |
1279 | tcon->treeName, uncName)); | |
1280 | if (strncmp | |
1281 | (tcon->treeName, uncName, | |
1282 | MAX_TREE_SIZE) == 0) { | |
1283 | cFYI(1, | |
1284 | ("Matched UNC, old user: %s == new: %s ?", | |
1285 | tcon->treeName, uncName)); | |
1286 | if (strncmp | |
1287 | (tcon->ses->userName, | |
1288 | userName, | |
1289 | MAX_USERNAME_SIZE) == 0) { | |
1290 | read_unlock(&GlobalSMBSeslock); | |
1291 | return tcon;/* also matched user (smb session)*/ | |
1292 | } | |
1293 | } | |
1294 | } | |
1295 | } | |
1296 | } | |
1297 | } | |
1298 | read_unlock(&GlobalSMBSeslock); | |
1299 | return NULL; | |
1300 | } | |
1301 | ||
1302 | int | |
1303 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1304 | const char *old_path, const struct nls_table *nls_codepage, |
1305 | int remap) | |
1da177e4 LT |
1306 | { |
1307 | unsigned char *referrals = NULL; | |
1308 | unsigned int num_referrals; | |
1309 | int rc = 0; | |
1310 | ||
1311 | rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage, | |
737b758c | 1312 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1313 | |
1314 | /* BB Add in code to: if valid refrl, if not ip address contact | |
1315 | the helper that resolves tcp names, mount to it, try to | |
1316 | tcon to it unmount it if fail */ | |
1317 | ||
f99d49ad | 1318 | kfree(referrals); |
1da177e4 LT |
1319 | |
1320 | return rc; | |
1321 | } | |
1322 | ||
1323 | int | |
1324 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
1325 | const char *old_path, const struct nls_table *nls_codepage, | |
737b758c SF |
1326 | unsigned int *pnum_referrals, |
1327 | unsigned char ** preferrals, int remap) | |
1da177e4 LT |
1328 | { |
1329 | char *temp_unc; | |
1330 | int rc = 0; | |
1331 | ||
1332 | *pnum_referrals = 0; | |
1333 | ||
1334 | if (pSesInfo->ipc_tid == 0) { | |
1335 | temp_unc = kmalloc(2 /* for slashes */ + | |
1336 | strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2) | |
1337 | + 1 + 4 /* slash IPC$ */ + 2, | |
1338 | GFP_KERNEL); | |
1339 | if (temp_unc == NULL) | |
1340 | return -ENOMEM; | |
1341 | temp_unc[0] = '\\'; | |
1342 | temp_unc[1] = '\\'; | |
1343 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1344 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1345 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1346 | cFYI(1, | |
1347 | ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid)); | |
1348 | kfree(temp_unc); | |
1349 | } | |
1350 | if (rc == 0) | |
1351 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1352 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1353 | |
1354 | return rc; | |
1355 | } | |
1356 | ||
1357 | /* See RFC1001 section 14 on representation of Netbios names */ | |
1358 | static void rfc1002mangle(char * target,char * source, unsigned int length) | |
1359 | { | |
1360 | unsigned int i,j; | |
1361 | ||
1362 | for(i=0,j=0;i<(length);i++) { | |
1363 | /* mask a nibble at a time and encode */ | |
1364 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1365 | target[j+1] = 'A' + (0x0F & source[i]); | |
1366 | j+=2; | |
1367 | } | |
1368 | ||
1369 | } | |
1370 | ||
1371 | ||
1372 | static int | |
1373 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, | |
a10faeb2 | 1374 | char * netbios_name, char * target_name) |
1da177e4 LT |
1375 | { |
1376 | int rc = 0; | |
1377 | int connected = 0; | |
1378 | __be16 orig_port = 0; | |
1379 | ||
1380 | if(*csocket == NULL) { | |
1381 | rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1382 | if (rc < 0) { | |
1383 | cERROR(1, ("Error %d creating socket",rc)); | |
1384 | *csocket = NULL; | |
1385 | return rc; | |
1386 | } else { | |
1387 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1388 | cFYI(1,("Socket created")); | |
1389 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1390 | } | |
1391 | } | |
1392 | ||
1393 | psin_server->sin_family = AF_INET; | |
1394 | if(psin_server->sin_port) { /* user overrode default port */ | |
1395 | rc = (*csocket)->ops->connect(*csocket, | |
1396 | (struct sockaddr *) psin_server, | |
1397 | sizeof (struct sockaddr_in),0); | |
1398 | if (rc >= 0) | |
1399 | connected = 1; | |
1400 | } | |
1401 | ||
1402 | if(!connected) { | |
1403 | /* save original port so we can retry user specified port | |
1404 | later if fall back ports fail this time */ | |
1405 | orig_port = psin_server->sin_port; | |
1406 | ||
1407 | /* do not retry on the same port we just failed on */ | |
1408 | if(psin_server->sin_port != htons(CIFS_PORT)) { | |
1409 | psin_server->sin_port = htons(CIFS_PORT); | |
1410 | ||
1411 | rc = (*csocket)->ops->connect(*csocket, | |
1412 | (struct sockaddr *) psin_server, | |
1413 | sizeof (struct sockaddr_in),0); | |
1414 | if (rc >= 0) | |
1415 | connected = 1; | |
1416 | } | |
1417 | } | |
1418 | if (!connected) { | |
1419 | psin_server->sin_port = htons(RFC1001_PORT); | |
1420 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1421 | psin_server, sizeof (struct sockaddr_in),0); | |
1422 | if (rc >= 0) | |
1423 | connected = 1; | |
1424 | } | |
1425 | ||
1426 | /* give up here - unless we want to retry on different | |
1427 | protocol families some day */ | |
1428 | if (!connected) { | |
1429 | if(orig_port) | |
1430 | psin_server->sin_port = orig_port; | |
1431 | cFYI(1,("Error %d connecting to server via ipv4",rc)); | |
1432 | sock_release(*csocket); | |
1433 | *csocket = NULL; | |
1434 | return rc; | |
1435 | } | |
1436 | /* Eventually check for other socket options to change from | |
1437 | the default. sock_setsockopt not used because it expects | |
1438 | user space buffer */ | |
b387eaeb SF |
1439 | cFYI(1,("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",(*csocket)->sk->sk_sndbuf, |
1440 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); | |
1da177e4 | 1441 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb SF |
1442 | /* make the bufsizes depend on wsize/rsize and max requests */ |
1443 | if((*csocket)->sk->sk_sndbuf < (200 * 1024)) | |
1444 | (*csocket)->sk->sk_sndbuf = 200 * 1024; | |
1445 | if((*csocket)->sk->sk_rcvbuf < (140 * 1024)) | |
1446 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; | |
1da177e4 LT |
1447 | |
1448 | /* send RFC1001 sessinit */ | |
1da177e4 LT |
1449 | if(psin_server->sin_port == htons(RFC1001_PORT)) { |
1450 | /* some servers require RFC1001 sessinit before sending | |
1451 | negprot - BB check reconnection in case where second | |
1452 | sessinit is sent but no second negprot */ | |
1453 | struct rfc1002_session_packet * ses_init_buf; | |
1454 | struct smb_hdr * smb_buf; | |
e915fc49 | 1455 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), GFP_KERNEL); |
1da177e4 LT |
1456 | if(ses_init_buf) { |
1457 | ses_init_buf->trailer.session_req.called_len = 32; | |
a10faeb2 SF |
1458 | if(target_name && (target_name[0] != 0)) { |
1459 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1460 | target_name, 16); | |
1461 | } else { | |
1462 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1463 | DEFAULT_CIFS_CALLED_NAME,16); | |
1464 | } | |
1465 | ||
1da177e4 LT |
1466 | ses_init_buf->trailer.session_req.calling_len = 32; |
1467 | /* calling name ends in null (byte 16) from old smb | |
1468 | convention. */ | |
1469 | if(netbios_name && (netbios_name[0] !=0)) { | |
1470 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1471 | netbios_name,16); | |
1472 | } else { | |
1473 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1474 | "LINUX_CIFS_CLNT",16); | |
1475 | } | |
1476 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1477 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1478 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1479 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1480 | smb_buf->smb_buf_length = 0x81000044; | |
1481 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1482 | (struct sockaddr *)psin_server); | |
1483 | kfree(ses_init_buf); | |
083d3a2c SF |
1484 | msleep(1); /* RFC1001 layer in at least one server |
1485 | requires very short break before negprot | |
1486 | presumably because not expecting negprot | |
1487 | to follow so fast. This is a simple | |
1488 | solution that works without | |
1489 | complicating the code and causes no | |
1490 | significant slowing down on mount | |
1491 | for everyone else */ | |
1da177e4 LT |
1492 | } |
1493 | /* else the negprot may still work without this | |
1494 | even though malloc failed */ | |
1495 | ||
1496 | } | |
1497 | ||
1498 | return rc; | |
1499 | } | |
1500 | ||
1501 | static int | |
1502 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1503 | { | |
1504 | int rc = 0; | |
1505 | int connected = 0; | |
1506 | __be16 orig_port = 0; | |
1507 | ||
1508 | if(*csocket == NULL) { | |
1509 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1510 | if (rc < 0) { | |
1511 | cERROR(1, ("Error %d creating ipv6 socket",rc)); | |
1512 | *csocket = NULL; | |
1513 | return rc; | |
1514 | } else { | |
1515 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1516 | cFYI(1,("ipv6 Socket created")); | |
1517 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1518 | } | |
1519 | } | |
1520 | ||
1521 | psin_server->sin6_family = AF_INET6; | |
1522 | ||
1523 | if(psin_server->sin6_port) { /* user overrode default port */ | |
1524 | rc = (*csocket)->ops->connect(*csocket, | |
1525 | (struct sockaddr *) psin_server, | |
1526 | sizeof (struct sockaddr_in6),0); | |
1527 | if (rc >= 0) | |
1528 | connected = 1; | |
1529 | } | |
1530 | ||
1531 | if(!connected) { | |
1532 | /* save original port so we can retry user specified port | |
1533 | later if fall back ports fail this time */ | |
1534 | ||
1535 | orig_port = psin_server->sin6_port; | |
1536 | /* do not retry on the same port we just failed on */ | |
1537 | if(psin_server->sin6_port != htons(CIFS_PORT)) { | |
1538 | psin_server->sin6_port = htons(CIFS_PORT); | |
1539 | ||
1540 | rc = (*csocket)->ops->connect(*csocket, | |
1541 | (struct sockaddr *) psin_server, | |
1542 | sizeof (struct sockaddr_in6),0); | |
1543 | if (rc >= 0) | |
1544 | connected = 1; | |
1545 | } | |
1546 | } | |
1547 | if (!connected) { | |
1548 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1549 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1550 | psin_server, sizeof (struct sockaddr_in6),0); | |
1551 | if (rc >= 0) | |
1552 | connected = 1; | |
1553 | } | |
1554 | ||
1555 | /* give up here - unless we want to retry on different | |
1556 | protocol families some day */ | |
1557 | if (!connected) { | |
1558 | if(orig_port) | |
1559 | psin_server->sin6_port = orig_port; | |
1560 | cFYI(1,("Error %d connecting to server via ipv6",rc)); | |
1561 | sock_release(*csocket); | |
1562 | *csocket = NULL; | |
1563 | return rc; | |
1564 | } | |
1565 | /* Eventually check for other socket options to change from | |
1566 | the default. sock_setsockopt not used because it expects | |
1567 | user space buffer */ | |
1568 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1569 | ||
1570 | return rc; | |
1571 | } | |
1572 | ||
1573 | int | |
1574 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1575 | char *mount_data, const char *devname) | |
1576 | { | |
1577 | int rc = 0; | |
1578 | int xid; | |
1579 | int address_type = AF_INET; | |
1580 | struct socket *csocket = NULL; | |
1581 | struct sockaddr_in sin_server; | |
1582 | struct sockaddr_in6 sin_server6; | |
1583 | struct smb_vol volume_info; | |
1584 | struct cifsSesInfo *pSesInfo = NULL; | |
1585 | struct cifsSesInfo *existingCifsSes = NULL; | |
1586 | struct cifsTconInfo *tcon = NULL; | |
1587 | struct TCP_Server_Info *srvTcp = NULL; | |
1588 | ||
1589 | xid = GetXid(); | |
1590 | ||
1591 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
1592 | ||
1593 | memset(&volume_info,0,sizeof(struct smb_vol)); | |
1594 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { | |
f99d49ad JJ |
1595 | kfree(volume_info.UNC); |
1596 | kfree(volume_info.password); | |
1da177e4 LT |
1597 | FreeXid(xid); |
1598 | return -EINVAL; | |
1599 | } | |
1600 | ||
1601 | if (volume_info.username) { | |
1602 | /* BB fixme parse for domain name here */ | |
1603 | cFYI(1, ("Username: %s ", volume_info.username)); | |
1604 | ||
1605 | } else { | |
bf820679 | 1606 | cifserror("No username specified"); |
1da177e4 LT |
1607 | /* In userspace mount helper we can get user name from alternate |
1608 | locations such as env variables and files on disk */ | |
f99d49ad JJ |
1609 | kfree(volume_info.UNC); |
1610 | kfree(volume_info.password); | |
1da177e4 LT |
1611 | FreeXid(xid); |
1612 | return -EINVAL; | |
1613 | } | |
1614 | ||
1615 | if (volume_info.UNCip && volume_info.UNC) { | |
1616 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr); | |
1617 | ||
1618 | if(rc <= 0) { | |
1619 | /* not ipv4 address, try ipv6 */ | |
1620 | rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u); | |
1621 | if(rc > 0) | |
1622 | address_type = AF_INET6; | |
1623 | } else { | |
1624 | address_type = AF_INET; | |
1625 | } | |
1626 | ||
1627 | if(rc <= 0) { | |
1628 | /* we failed translating address */ | |
f99d49ad JJ |
1629 | kfree(volume_info.UNC); |
1630 | kfree(volume_info.password); | |
1da177e4 LT |
1631 | FreeXid(xid); |
1632 | return -EINVAL; | |
1633 | } | |
1634 | ||
1635 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1636 | /* success */ | |
1637 | rc = 0; | |
1638 | } else if (volume_info.UNCip){ | |
1639 | /* BB using ip addr as server name connect to the DFS root below */ | |
1640 | cERROR(1,("Connecting to DFS root not implemented yet")); | |
f99d49ad JJ |
1641 | kfree(volume_info.UNC); |
1642 | kfree(volume_info.password); | |
1da177e4 LT |
1643 | FreeXid(xid); |
1644 | return -EINVAL; | |
1645 | } else /* which servers DFS root would we conect to */ { | |
1646 | cERROR(1, | |
bf820679 | 1647 | ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified")); |
f99d49ad JJ |
1648 | kfree(volume_info.UNC); |
1649 | kfree(volume_info.password); | |
1da177e4 LT |
1650 | FreeXid(xid); |
1651 | return -EINVAL; | |
1652 | } | |
1653 | ||
1654 | /* this is needed for ASCII cp to Unicode converts */ | |
1655 | if(volume_info.iocharset == NULL) { | |
1656 | cifs_sb->local_nls = load_nls_default(); | |
1657 | /* load_nls_default can not return null */ | |
1658 | } else { | |
1659 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
1660 | if(cifs_sb->local_nls == NULL) { | |
1661 | cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset)); | |
f99d49ad JJ |
1662 | kfree(volume_info.UNC); |
1663 | kfree(volume_info.password); | |
1da177e4 LT |
1664 | FreeXid(xid); |
1665 | return -ELIBACC; | |
1666 | } | |
1667 | } | |
1668 | ||
1669 | if(address_type == AF_INET) | |
1670 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, | |
1671 | NULL /* no ipv6 addr */, | |
1672 | volume_info.username, &srvTcp); | |
1673 | else if(address_type == AF_INET6) | |
1674 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, | |
1675 | &sin_server6.sin6_addr, | |
1676 | volume_info.username, &srvTcp); | |
1677 | else { | |
f99d49ad JJ |
1678 | kfree(volume_info.UNC); |
1679 | kfree(volume_info.password); | |
1da177e4 LT |
1680 | FreeXid(xid); |
1681 | return -EINVAL; | |
1682 | } | |
1683 | ||
1684 | ||
1685 | if (srvTcp) { | |
bf820679 | 1686 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 LT |
1687 | } else { /* create socket */ |
1688 | if(volume_info.port) | |
1689 | sin_server.sin_port = htons(volume_info.port); | |
1690 | else | |
1691 | sin_server.sin_port = 0; | |
a10faeb2 SF |
1692 | rc = ipv4_connect(&sin_server,&csocket, |
1693 | volume_info.source_rfc1001_name, | |
1694 | volume_info.target_rfc1001_name); | |
1da177e4 LT |
1695 | if (rc < 0) { |
1696 | cERROR(1, | |
1697 | ("Error connecting to IPv4 socket. Aborting operation")); | |
1698 | if(csocket != NULL) | |
1699 | sock_release(csocket); | |
f99d49ad JJ |
1700 | kfree(volume_info.UNC); |
1701 | kfree(volume_info.password); | |
1da177e4 LT |
1702 | FreeXid(xid); |
1703 | return rc; | |
1704 | } | |
1705 | ||
1706 | srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); | |
1707 | if (srvTcp == NULL) { | |
1708 | rc = -ENOMEM; | |
1709 | sock_release(csocket); | |
f99d49ad JJ |
1710 | kfree(volume_info.UNC); |
1711 | kfree(volume_info.password); | |
1da177e4 LT |
1712 | FreeXid(xid); |
1713 | return rc; | |
1714 | } else { | |
1715 | memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); | |
1716 | memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in)); | |
1717 | atomic_set(&srvTcp->inFlight,0); | |
1718 | /* BB Add code for ipv6 case too */ | |
1719 | srvTcp->ssocket = csocket; | |
1720 | srvTcp->protocolType = IPV4; | |
1721 | init_waitqueue_head(&srvTcp->response_q); | |
1722 | init_waitqueue_head(&srvTcp->request_q); | |
1723 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1724 | /* at this point we are the only ones with the pointer | |
1725 | to the struct since the kernel thread not created yet | |
1726 | so no need to spinlock this init of tcpStatus */ | |
1727 | srvTcp->tcpStatus = CifsNew; | |
1728 | init_MUTEX(&srvTcp->tcpSem); | |
1729 | rc = (int)kernel_thread((void *)(void *)cifs_demultiplex_thread, srvTcp, | |
1730 | CLONE_FS | CLONE_FILES | CLONE_VM); | |
1731 | if(rc < 0) { | |
1732 | rc = -ENOMEM; | |
1733 | sock_release(csocket); | |
f99d49ad JJ |
1734 | kfree(volume_info.UNC); |
1735 | kfree(volume_info.password); | |
1da177e4 LT |
1736 | FreeXid(xid); |
1737 | return rc; | |
f191401f SF |
1738 | } |
1739 | wait_for_completion(&cifsd_complete); | |
1740 | rc = 0; | |
1da177e4 | 1741 | memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); |
a10faeb2 | 1742 | memcpy(srvTcp->server_RFC1001_name, volume_info.target_rfc1001_name,16); |
ad009ac9 | 1743 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1744 | } |
1745 | } | |
1746 | ||
1747 | if (existingCifsSes) { | |
1748 | pSesInfo = existingCifsSes; | |
bf820679 | 1749 | cFYI(1, ("Existing smb sess found")); |
f99d49ad | 1750 | kfree(volume_info.password); |
1da177e4 LT |
1751 | /* volume_info.UNC freed at end of function */ |
1752 | } else if (!rc) { | |
bf820679 | 1753 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
1754 | pSesInfo = sesInfoAlloc(); |
1755 | if (pSesInfo == NULL) | |
1756 | rc = -ENOMEM; | |
1757 | else { | |
1758 | pSesInfo->server = srvTcp; | |
1759 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1760 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1761 | } | |
1762 | ||
1763 | if (!rc){ | |
1764 | /* volume_info.password freed at unmount */ | |
1765 | if (volume_info.password) | |
1766 | pSesInfo->password = volume_info.password; | |
1767 | if (volume_info.username) | |
1768 | strncpy(pSesInfo->userName, | |
1769 | volume_info.username,MAX_USERNAME_SIZE); | |
3979877e SF |
1770 | if (volume_info.domainname) { |
1771 | int len = strlen(volume_info.domainname); | |
1772 | pSesInfo->domainName = | |
1773 | kmalloc(len + 1, GFP_KERNEL); | |
1774 | if(pSesInfo->domainName) | |
1775 | strcpy(pSesInfo->domainName, | |
1776 | volume_info.domainname); | |
1777 | } | |
1da177e4 LT |
1778 | pSesInfo->linux_uid = volume_info.linux_uid; |
1779 | down(&pSesInfo->sesSem); | |
1780 | rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls); | |
1781 | up(&pSesInfo->sesSem); | |
1782 | if(!rc) | |
1783 | atomic_inc(&srvTcp->socketUseCount); | |
1784 | } else | |
f99d49ad | 1785 | kfree(volume_info.password); |
1da177e4 LT |
1786 | } |
1787 | ||
1788 | /* search for existing tcon to this server share */ | |
1789 | if (!rc) { | |
0ae0efad SF |
1790 | if(volume_info.rsize > CIFSMaxBufSize) { |
1791 | cERROR(1,("rsize %d too large, using MaxBufSize", | |
1792 | volume_info.rsize)); | |
1793 | cifs_sb->rsize = CIFSMaxBufSize; | |
1794 | } else if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 1795 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
1796 | else /* default */ |
1797 | cifs_sb->rsize = CIFSMaxBufSize; | |
1798 | ||
1799 | if(volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { | |
1800 | cERROR(1,("wsize %d too large using 4096 instead", | |
1801 | volume_info.wsize)); | |
1802 | cifs_sb->wsize = 4096; | |
1803 | } else if(volume_info.wsize) | |
1da177e4 LT |
1804 | cifs_sb->wsize = volume_info.wsize; |
1805 | else | |
17cbbafe | 1806 | cifs_sb->wsize = |
1877c9ea SF |
1807 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
1808 | 127*1024); | |
17cbbafe SF |
1809 | /* old default of CIFSMaxBufSize was too small now |
1810 | that SMB Write2 can send multiple pages in kvec. | |
1811 | RFC1001 does not describe what happens when frame | |
1812 | bigger than 128K is sent so use that as max in | |
1813 | conjunction with 52K kvec constraint on arch with 4K | |
1814 | page size */ | |
1815 | ||
6cec2aed SF |
1816 | if(cifs_sb->rsize < 2048) { |
1817 | cifs_sb->rsize = 2048; | |
1818 | /* Windows ME may prefer this */ | |
1819 | cFYI(1,("readsize set to minimum 2048")); | |
1da177e4 LT |
1820 | } |
1821 | cifs_sb->mnt_uid = volume_info.linux_uid; | |
1822 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
1823 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
1824 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
eeac8047 SF |
1825 | cFYI(1,("file mode: 0x%x dir mode: 0x%x", |
1826 | cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode)); | |
1da177e4 LT |
1827 | |
1828 | if(volume_info.noperm) | |
1829 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
1830 | if(volume_info.setuids) | |
1831 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
1832 | if(volume_info.server_ino) | |
1833 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
6a0b4824 SF |
1834 | if(volume_info.remap) |
1835 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
1da177e4 LT |
1836 | if(volume_info.no_xattr) |
1837 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
d7245c2c SF |
1838 | if(volume_info.sfu_emul) |
1839 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; | |
c46fa8ac SF |
1840 | if(volume_info.nobrl) |
1841 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; | |
0a4b92c0 SF |
1842 | if(volume_info.cifs_acl) |
1843 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; | |
ac67055e | 1844 | |
1da177e4 | 1845 | if(volume_info.direct_io) { |
c46fa8ac | 1846 | cFYI(1,("mounting share using direct i/o")); |
1da177e4 LT |
1847 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
1848 | } | |
1849 | ||
1850 | tcon = | |
1851 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
1852 | volume_info.username); | |
1853 | if (tcon) { | |
bf820679 | 1854 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
1855 | /* we can have only one retry value for a connection |
1856 | to a share so for resources mounted more than once | |
1857 | to the same server share the last value passed in | |
1858 | for the retry flag is used */ | |
1859 | tcon->retry = volume_info.retry; | |
d3485d37 | 1860 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
1861 | } else { |
1862 | tcon = tconInfoAlloc(); | |
1863 | if (tcon == NULL) | |
1864 | rc = -ENOMEM; | |
1865 | else { | |
1866 | /* check for null share name ie connect to dfs root */ | |
1867 | ||
1868 | /* BB check if this works for exactly length three strings */ | |
1869 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) | |
1870 | && (strchr(volume_info.UNC + 3, '/') == | |
1871 | NULL)) { | |
737b758c SF |
1872 | rc = connect_to_dfs_path(xid, pSesInfo, |
1873 | "", cifs_sb->local_nls, | |
1874 | cifs_sb->mnt_cifs_flags & | |
1875 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
f99d49ad | 1876 | kfree(volume_info.UNC); |
1da177e4 LT |
1877 | FreeXid(xid); |
1878 | return -ENODEV; | |
1879 | } else { | |
1880 | rc = CIFSTCon(xid, pSesInfo, | |
1881 | volume_info.UNC, | |
1882 | tcon, cifs_sb->local_nls); | |
1883 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
1884 | } | |
1885 | if (!rc) { | |
1886 | atomic_inc(&pSesInfo->inUse); | |
1887 | tcon->retry = volume_info.retry; | |
d3485d37 | 1888 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
1889 | } |
1890 | } | |
1891 | } | |
1892 | } | |
1893 | if(pSesInfo) { | |
1894 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { | |
1895 | sb->s_maxbytes = (u64) 1 << 63; | |
1896 | } else | |
1897 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
1898 | } | |
1899 | ||
1900 | sb->s_time_gran = 100; | |
1901 | ||
1902 | /* on error free sesinfo and tcon struct if needed */ | |
1903 | if (rc) { | |
1904 | /* if session setup failed, use count is zero but | |
1905 | we still need to free cifsd thread */ | |
1906 | if(atomic_read(&srvTcp->socketUseCount) == 0) { | |
1907 | spin_lock(&GlobalMid_Lock); | |
1908 | srvTcp->tcpStatus = CifsExiting; | |
1909 | spin_unlock(&GlobalMid_Lock); | |
f191401f | 1910 | if(srvTcp->tsk) { |
1da177e4 | 1911 | send_sig(SIGKILL,srvTcp->tsk,1); |
f191401f SF |
1912 | wait_for_completion(&cifsd_complete); |
1913 | } | |
1da177e4 LT |
1914 | } |
1915 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
1916 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
1917 | tconInfoFree(tcon); | |
1918 | if (existingCifsSes == NULL) { | |
1919 | if (pSesInfo) { | |
1920 | if ((pSesInfo->server) && | |
1921 | (pSesInfo->status == CifsGood)) { | |
1922 | int temp_rc; | |
1923 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
1924 | /* if the socketUseCount is now zero */ | |
1925 | if((temp_rc == -ESHUTDOWN) && | |
f191401f | 1926 | (pSesInfo->server->tsk)) { |
1da177e4 | 1927 | send_sig(SIGKILL,pSesInfo->server->tsk,1); |
f191401f SF |
1928 | wait_for_completion(&cifsd_complete); |
1929 | } | |
1da177e4 LT |
1930 | } else |
1931 | cFYI(1, ("No session or bad tcon")); | |
1932 | sesInfoFree(pSesInfo); | |
1933 | /* pSesInfo = NULL; */ | |
1934 | } | |
1935 | } | |
1936 | } else { | |
1937 | atomic_inc(&tcon->useCount); | |
1938 | cifs_sb->tcon = tcon; | |
1939 | tcon->ses = pSesInfo; | |
1940 | ||
82940a46 | 1941 | /* do not care if following two calls succeed - informational */ |
737b758c SF |
1942 | CIFSSMBQFSDeviceInfo(xid, tcon); |
1943 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
82940a46 | 1944 | |
1da177e4 | 1945 | if (tcon->ses->capabilities & CAP_UNIX) { |
737b758c | 1946 | if(!CIFSSMBQFSUnixInfo(xid, tcon)) { |
82940a46 SF |
1947 | __u64 cap = |
1948 | le64_to_cpu(tcon->fsUnixInfo.Capability); | |
1949 | cap &= CIFS_UNIX_CAP_MASK; | |
1950 | if(volume_info.no_psx_acl) | |
1951 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
1952 | else if(CIFS_UNIX_POSIX_ACL_CAP & cap) { | |
1953 | cFYI(1,("negotiated posix acl support")); | |
1954 | sb->s_flags |= MS_POSIXACL; | |
1da177e4 | 1955 | } |
ac67055e | 1956 | |
82940a46 SF |
1957 | if(volume_info.posix_paths == 0) |
1958 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; | |
1959 | else if(cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { | |
1960 | cFYI(1,("negotiate posix pathnames")); | |
1961 | cifs_sb->mnt_cifs_flags |= | |
1962 | CIFS_MOUNT_POSIX_PATHS; | |
1963 | } | |
1964 | ||
1965 | cFYI(1,("Negotiate caps 0x%x",(int)cap)); | |
1966 | ||
1967 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
1968 | cFYI(1,("setting capabilities failed")); | |
ac67055e | 1969 | } |
1da177e4 LT |
1970 | } |
1971 | } | |
3e84469d SF |
1972 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
1973 | cifs_sb->wsize = min(cifs_sb->wsize, | |
1974 | (tcon->ses->server->maxBuf - | |
1975 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad SF |
1976 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
1977 | cifs_sb->rsize = min(cifs_sb->rsize, | |
1978 | (tcon->ses->server->maxBuf - | |
1979 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
1980 | } |
1981 | ||
1982 | /* volume_info.password is freed above when existing session found | |
1983 | (in which case it is not needed anymore) but when new sesion is created | |
1984 | the password ptr is put in the new session structure (in which case the | |
1985 | password will be freed at unmount time) */ | |
f99d49ad | 1986 | kfree(volume_info.UNC); |
1da177e4 LT |
1987 | FreeXid(xid); |
1988 | return rc; | |
1989 | } | |
1990 | ||
1991 | static int | |
1992 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 1993 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
1994 | const struct nls_table *nls_codepage) |
1995 | { | |
1996 | struct smb_hdr *smb_buffer; | |
1997 | struct smb_hdr *smb_buffer_response; | |
1998 | SESSION_SETUP_ANDX *pSMB; | |
1999 | SESSION_SETUP_ANDX *pSMBr; | |
2000 | char *bcc_ptr; | |
2001 | char *user; | |
2002 | char *domain; | |
2003 | int rc = 0; | |
2004 | int remaining_words = 0; | |
2005 | int bytes_returned = 0; | |
2006 | int len; | |
2007 | __u32 capabilities; | |
2008 | __u16 count; | |
2009 | ||
eeac8047 | 2010 | cFYI(1, ("In sesssetup")); |
1da177e4 LT |
2011 | if(ses == NULL) |
2012 | return -EINVAL; | |
2013 | user = ses->userName; | |
2014 | domain = ses->domainName; | |
2015 | smb_buffer = cifs_buf_get(); | |
2016 | if (smb_buffer == NULL) { | |
2017 | return -ENOMEM; | |
2018 | } | |
2019 | smb_buffer_response = smb_buffer; | |
2020 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2021 | ||
2022 | /* send SMBsessionSetup here */ | |
2023 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2024 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2025 | ||
1982c344 | 2026 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2027 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2028 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2029 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2030 | ||
2031 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2032 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2033 | ||
2034 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2035 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2036 | if (ses->capabilities & CAP_UNICODE) { | |
2037 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2038 | capabilities |= CAP_UNICODE; | |
2039 | } | |
2040 | if (ses->capabilities & CAP_STATUS32) { | |
2041 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2042 | capabilities |= CAP_STATUS32; | |
2043 | } | |
2044 | if (ses->capabilities & CAP_DFS) { | |
2045 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2046 | capabilities |= CAP_DFS; | |
2047 | } | |
2048 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2049 | ||
2050 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
7c7b25bc | 2051 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2052 | |
2053 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2054 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2055 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2056 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2057 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2058 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2059 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2060 | |
2061 | if (ses->capabilities & CAP_UNICODE) { | |
2062 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2063 | *bcc_ptr = 0; | |
2064 | bcc_ptr++; | |
2065 | } | |
2066 | if(user == NULL) | |
3979877e | 2067 | bytes_returned = 0; /* skip null user */ |
1da177e4 LT |
2068 | else |
2069 | bytes_returned = | |
e89dc920 | 2070 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2071 | nls_codepage); |
2072 | /* convert number of 16 bit words to bytes */ | |
2073 | bcc_ptr += 2 * bytes_returned; | |
2074 | bcc_ptr += 2; /* trailing null */ | |
2075 | if (domain == NULL) | |
2076 | bytes_returned = | |
e89dc920 | 2077 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2078 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2079 | else | |
2080 | bytes_returned = | |
e89dc920 | 2081 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2082 | nls_codepage); |
2083 | bcc_ptr += 2 * bytes_returned; | |
2084 | bcc_ptr += 2; | |
2085 | bytes_returned = | |
e89dc920 | 2086 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2087 | 32, nls_codepage); |
2088 | bcc_ptr += 2 * bytes_returned; | |
2089 | bytes_returned = | |
e89dc920 | 2090 | cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, |
1da177e4 LT |
2091 | 32, nls_codepage); |
2092 | bcc_ptr += 2 * bytes_returned; | |
2093 | bcc_ptr += 2; | |
2094 | bytes_returned = | |
e89dc920 | 2095 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2096 | 64, nls_codepage); |
2097 | bcc_ptr += 2 * bytes_returned; | |
2098 | bcc_ptr += 2; | |
2099 | } else { | |
2100 | if(user != NULL) { | |
2101 | strncpy(bcc_ptr, user, 200); | |
2102 | bcc_ptr += strnlen(user, 200); | |
2103 | } | |
2104 | *bcc_ptr = 0; | |
2105 | bcc_ptr++; | |
2106 | if (domain == NULL) { | |
2107 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2108 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2109 | } else { | |
2110 | strncpy(bcc_ptr, domain, 64); | |
2111 | bcc_ptr += strnlen(domain, 64); | |
2112 | *bcc_ptr = 0; | |
2113 | bcc_ptr++; | |
2114 | } | |
2115 | strcpy(bcc_ptr, "Linux version "); | |
2116 | bcc_ptr += strlen("Linux version "); | |
2117 | strcpy(bcc_ptr, system_utsname.release); | |
2118 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2119 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2120 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2121 | } | |
2122 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2123 | smb_buffer->smb_buf_length += count; | |
2124 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2125 | ||
2126 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2127 | &bytes_returned, 1); | |
2128 | if (rc) { | |
2129 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2130 | } else if ((smb_buffer_response->WordCount == 3) | |
2131 | || (smb_buffer_response->WordCount == 4)) { | |
2132 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2133 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2134 | if (action & GUEST_LOGIN) | |
2135 | cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */ | |
2136 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
2137 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2138 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2139 | bcc_ptr = pByteArea(smb_buffer_response); | |
2140 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2141 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2142 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2143 | if (pSMBr->resp.hdr.WordCount == 4) | |
2144 | bcc_ptr += blob_len; | |
2145 | ||
2146 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2147 | if ((long) (bcc_ptr) % 2) { | |
2148 | remaining_words = | |
2149 | (BCC(smb_buffer_response) - 1) /2; | |
2150 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2151 | } else { | |
2152 | remaining_words = | |
2153 | BCC(smb_buffer_response) / 2; | |
2154 | } | |
2155 | len = | |
2156 | UniStrnlen((wchar_t *) bcc_ptr, | |
2157 | remaining_words - 1); | |
2158 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2159 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2160 | terminating last Unicode string in response */ | |
a424f8bf SF |
2161 | if(ses->serverOS) |
2162 | kfree(ses->serverOS); | |
e915fc49 | 2163 | ses->serverOS = kzalloc(2 * (len + 1), GFP_KERNEL); |
433dc24f SF |
2164 | if(ses->serverOS == NULL) |
2165 | goto sesssetup_nomem; | |
1da177e4 | 2166 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2167 | (__le16 *)bcc_ptr, len,nls_codepage); |
1da177e4 LT |
2168 | bcc_ptr += 2 * (len + 1); |
2169 | remaining_words -= len + 1; | |
2170 | ses->serverOS[2 * len] = 0; | |
2171 | ses->serverOS[1 + (2 * len)] = 0; | |
2172 | if (remaining_words > 0) { | |
2173 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2174 | remaining_words-1); | |
a424f8bf SF |
2175 | if(ses->serverNOS) |
2176 | kfree(ses->serverNOS); | |
e915fc49 | 2177 | ses->serverNOS = kzalloc(2 * (len + 1),GFP_KERNEL); |
433dc24f SF |
2178 | if(ses->serverNOS == NULL) |
2179 | goto sesssetup_nomem; | |
1da177e4 | 2180 | cifs_strfromUCS_le(ses->serverNOS, |
e89dc920 | 2181 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2182 | bcc_ptr += 2 * (len + 1); |
2183 | ses->serverNOS[2 * len] = 0; | |
2184 | ses->serverNOS[1 + (2 * len)] = 0; | |
2185 | if(strncmp(ses->serverNOS, | |
2186 | "NT LAN Manager 4",16) == 0) { | |
2187 | cFYI(1,("NT4 server")); | |
2188 | ses->flags |= CIFS_SES_NT4; | |
2189 | } | |
2190 | remaining_words -= len + 1; | |
2191 | if (remaining_words > 0) { | |
433dc24f | 2192 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 2193 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
a424f8bf SF |
2194 | if(ses->serverDomain) |
2195 | kfree(ses->serverDomain); | |
1da177e4 | 2196 | ses->serverDomain = |
e915fc49 | 2197 | kzalloc(2*(len+1),GFP_KERNEL); |
433dc24f SF |
2198 | if(ses->serverDomain == NULL) |
2199 | goto sesssetup_nomem; | |
1da177e4 | 2200 | cifs_strfromUCS_le(ses->serverDomain, |
e89dc920 | 2201 | (__le16 *)bcc_ptr,len,nls_codepage); |
1da177e4 LT |
2202 | bcc_ptr += 2 * (len + 1); |
2203 | ses->serverDomain[2*len] = 0; | |
2204 | ses->serverDomain[1+(2*len)] = 0; | |
2205 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
2206 | else { |
2207 | if(ses->serverDomain) | |
2208 | kfree(ses->serverDomain); | |
433dc24f | 2209 | ses->serverDomain = |
e915fc49 | 2210 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2211 | } |
1da177e4 | 2212 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2213 | /* if these kcallocs fail not much we |
2214 | can do, but better to not fail the | |
2215 | sesssetup itself */ | |
a424f8bf SF |
2216 | if(ses->serverDomain) |
2217 | kfree(ses->serverDomain); | |
1da177e4 | 2218 | ses->serverDomain = |
e915fc49 | 2219 | kzalloc(2, GFP_KERNEL); |
a424f8bf SF |
2220 | if(ses->serverNOS) |
2221 | kfree(ses->serverNOS); | |
1da177e4 | 2222 | ses->serverNOS = |
e915fc49 | 2223 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2224 | } |
2225 | } else { /* ASCII */ | |
2226 | len = strnlen(bcc_ptr, 1024); | |
2227 | if (((long) bcc_ptr + len) - (long) | |
2228 | pByteArea(smb_buffer_response) | |
2229 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
2230 | if(ses->serverOS) |
2231 | kfree(ses->serverOS); | |
e915fc49 | 2232 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2233 | if(ses->serverOS == NULL) |
2234 | goto sesssetup_nomem; | |
1da177e4 LT |
2235 | strncpy(ses->serverOS,bcc_ptr, len); |
2236 | ||
2237 | bcc_ptr += len; | |
2238 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2239 | bcc_ptr++; | |
2240 | ||
2241 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2242 | if(ses->serverNOS) |
2243 | kfree(ses->serverNOS); | |
e915fc49 | 2244 | ses->serverNOS = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2245 | if(ses->serverNOS == NULL) |
2246 | goto sesssetup_nomem; | |
1da177e4 LT |
2247 | strncpy(ses->serverNOS, bcc_ptr, len); |
2248 | bcc_ptr += len; | |
2249 | bcc_ptr[0] = 0; | |
2250 | bcc_ptr++; | |
2251 | ||
2252 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2253 | if(ses->serverDomain) |
2254 | kfree(ses->serverDomain); | |
e915fc49 | 2255 | ses->serverDomain = kzalloc(len + 1,GFP_KERNEL); |
433dc24f SF |
2256 | if(ses->serverDomain == NULL) |
2257 | goto sesssetup_nomem; | |
1da177e4 LT |
2258 | strncpy(ses->serverDomain, bcc_ptr, len); |
2259 | bcc_ptr += len; | |
2260 | bcc_ptr[0] = 0; | |
2261 | bcc_ptr++; | |
2262 | } else | |
2263 | cFYI(1, | |
2264 | ("Variable field of length %d extends beyond end of smb ", | |
2265 | len)); | |
2266 | } | |
2267 | } else { | |
2268 | cERROR(1, | |
2269 | (" Security Blob Length extends beyond end of SMB")); | |
2270 | } | |
2271 | } else { | |
2272 | cERROR(1, | |
2273 | (" Invalid Word count %d: ", | |
2274 | smb_buffer_response->WordCount)); | |
2275 | rc = -EIO; | |
2276 | } | |
433dc24f SF |
2277 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2278 | since that could make reconnection harder, and | |
2279 | reconnection might be needed to free memory */ | |
1da177e4 LT |
2280 | if (smb_buffer) |
2281 | cifs_buf_release(smb_buffer); | |
2282 | ||
2283 | return rc; | |
2284 | } | |
2285 | ||
2286 | static int | |
2287 | CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2288 | char *SecurityBlob,int SecurityBlobLength, | |
2289 | const struct nls_table *nls_codepage) | |
2290 | { | |
2291 | struct smb_hdr *smb_buffer; | |
2292 | struct smb_hdr *smb_buffer_response; | |
2293 | SESSION_SETUP_ANDX *pSMB; | |
2294 | SESSION_SETUP_ANDX *pSMBr; | |
2295 | char *bcc_ptr; | |
2296 | char *user; | |
2297 | char *domain; | |
2298 | int rc = 0; | |
2299 | int remaining_words = 0; | |
2300 | int bytes_returned = 0; | |
2301 | int len; | |
2302 | __u32 capabilities; | |
2303 | __u16 count; | |
2304 | ||
2305 | cFYI(1, ("In spnego sesssetup ")); | |
2306 | if(ses == NULL) | |
2307 | return -EINVAL; | |
2308 | user = ses->userName; | |
2309 | domain = ses->domainName; | |
2310 | ||
2311 | smb_buffer = cifs_buf_get(); | |
2312 | if (smb_buffer == NULL) { | |
2313 | return -ENOMEM; | |
2314 | } | |
2315 | smb_buffer_response = smb_buffer; | |
2316 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2317 | ||
2318 | /* send SMBsessionSetup here */ | |
2319 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2320 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2321 | |
2322 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2323 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2324 | pSMB->req.AndXCommand = 0xFF; | |
184ed211 SF |
2325 | if(ses->server->maxBuf > 64*1024) |
2326 | ses->server->maxBuf = (64*1023); | |
1da177e4 LT |
2327 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); |
2328 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2329 | ||
2330 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2331 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2332 | ||
2333 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2334 | CAP_EXTENDED_SECURITY; | |
2335 | if (ses->capabilities & CAP_UNICODE) { | |
2336 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2337 | capabilities |= CAP_UNICODE; | |
2338 | } | |
2339 | if (ses->capabilities & CAP_STATUS32) { | |
2340 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2341 | capabilities |= CAP_STATUS32; | |
2342 | } | |
2343 | if (ses->capabilities & CAP_DFS) { | |
2344 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2345 | capabilities |= CAP_DFS; | |
2346 | } | |
2347 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2348 | ||
2349 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2350 | bcc_ptr = pByteArea(smb_buffer); | |
2351 | memcpy(bcc_ptr, SecurityBlob, SecurityBlobLength); | |
2352 | bcc_ptr += SecurityBlobLength; | |
2353 | ||
2354 | if (ses->capabilities & CAP_UNICODE) { | |
2355 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode strings */ | |
2356 | *bcc_ptr = 0; | |
2357 | bcc_ptr++; | |
2358 | } | |
2359 | bytes_returned = | |
e89dc920 | 2360 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, nls_codepage); |
1da177e4 LT |
2361 | bcc_ptr += 2 * bytes_returned; /* convert num of 16 bit words to bytes */ |
2362 | bcc_ptr += 2; /* trailing null */ | |
2363 | if (domain == NULL) | |
2364 | bytes_returned = | |
e89dc920 | 2365 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2366 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2367 | else | |
2368 | bytes_returned = | |
e89dc920 | 2369 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2370 | nls_codepage); |
2371 | bcc_ptr += 2 * bytes_returned; | |
2372 | bcc_ptr += 2; | |
2373 | bytes_returned = | |
e89dc920 | 2374 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2375 | 32, nls_codepage); |
2376 | bcc_ptr += 2 * bytes_returned; | |
2377 | bytes_returned = | |
e89dc920 | 2378 | cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32, |
1da177e4 LT |
2379 | nls_codepage); |
2380 | bcc_ptr += 2 * bytes_returned; | |
2381 | bcc_ptr += 2; | |
2382 | bytes_returned = | |
e89dc920 | 2383 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2384 | 64, nls_codepage); |
2385 | bcc_ptr += 2 * bytes_returned; | |
2386 | bcc_ptr += 2; | |
2387 | } else { | |
2388 | strncpy(bcc_ptr, user, 200); | |
2389 | bcc_ptr += strnlen(user, 200); | |
2390 | *bcc_ptr = 0; | |
2391 | bcc_ptr++; | |
2392 | if (domain == NULL) { | |
2393 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2394 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2395 | } else { | |
2396 | strncpy(bcc_ptr, domain, 64); | |
2397 | bcc_ptr += strnlen(domain, 64); | |
2398 | *bcc_ptr = 0; | |
2399 | bcc_ptr++; | |
2400 | } | |
2401 | strcpy(bcc_ptr, "Linux version "); | |
2402 | bcc_ptr += strlen("Linux version "); | |
2403 | strcpy(bcc_ptr, system_utsname.release); | |
2404 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2405 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2406 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2407 | } | |
2408 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2409 | smb_buffer->smb_buf_length += count; | |
2410 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2411 | ||
2412 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2413 | &bytes_returned, 1); | |
2414 | if (rc) { | |
2415 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2416 | } else if ((smb_buffer_response->WordCount == 3) | |
2417 | || (smb_buffer_response->WordCount == 4)) { | |
2418 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2419 | __u16 blob_len = | |
2420 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2421 | if (action & GUEST_LOGIN) | |
2422 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
2423 | if (ses) { | |
2424 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
2425 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2426 | bcc_ptr = pByteArea(smb_buffer_response); /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2427 | ||
2428 | /* BB Fix below to make endian neutral !! */ | |
2429 | ||
2430 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2431 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2432 | && (blob_len < | |
2433 | pSMBr->resp.ByteCount))) { | |
2434 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2435 | bcc_ptr += | |
2436 | blob_len; | |
2437 | cFYI(1, | |
2438 | ("Security Blob Length %d ", | |
2439 | blob_len)); | |
2440 | } | |
2441 | ||
2442 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2443 | if ((long) (bcc_ptr) % 2) { | |
2444 | remaining_words = | |
2445 | (BCC(smb_buffer_response) | |
2446 | - 1) / 2; | |
2447 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2448 | } else { | |
2449 | remaining_words = | |
2450 | BCC | |
2451 | (smb_buffer_response) / 2; | |
2452 | } | |
2453 | len = | |
2454 | UniStrnlen((wchar_t *) bcc_ptr, | |
2455 | remaining_words - 1); | |
2456 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2457 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2458 | terminating last Unicode string in response */ | |
a424f8bf SF |
2459 | if(ses->serverOS) |
2460 | kfree(ses->serverOS); | |
1da177e4 | 2461 | ses->serverOS = |
e915fc49 | 2462 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2463 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2464 | (__le16 *) |
1da177e4 LT |
2465 | bcc_ptr, len, |
2466 | nls_codepage); | |
2467 | bcc_ptr += 2 * (len + 1); | |
2468 | remaining_words -= len + 1; | |
2469 | ses->serverOS[2 * len] = 0; | |
2470 | ses->serverOS[1 + (2 * len)] = 0; | |
2471 | if (remaining_words > 0) { | |
2472 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2473 | remaining_words | |
2474 | - 1); | |
a424f8bf SF |
2475 | if(ses->serverNOS) |
2476 | kfree(ses->serverNOS); | |
1da177e4 | 2477 | ses->serverNOS = |
e915fc49 | 2478 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2479 | GFP_KERNEL); |
2480 | cifs_strfromUCS_le(ses->serverNOS, | |
e89dc920 | 2481 | (__le16 *)bcc_ptr, |
1da177e4 LT |
2482 | len, |
2483 | nls_codepage); | |
2484 | bcc_ptr += 2 * (len + 1); | |
2485 | ses->serverNOS[2 * len] = 0; | |
2486 | ses->serverNOS[1 + (2 * len)] = 0; | |
2487 | remaining_words -= len + 1; | |
2488 | if (remaining_words > 0) { | |
2489 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
a424f8bf SF |
2490 | /* last string not null terminated (e.g.Windows XP/2000) */ |
2491 | if(ses->serverDomain) | |
2492 | kfree(ses->serverDomain); | |
e915fc49 | 2493 | ses->serverDomain = kzalloc(2*(len+1),GFP_KERNEL); |
1da177e4 | 2494 | cifs_strfromUCS_le(ses->serverDomain, |
e89dc920 SF |
2495 | (__le16 *)bcc_ptr, |
2496 | len, nls_codepage); | |
1da177e4 LT |
2497 | bcc_ptr += 2*(len+1); |
2498 | ses->serverDomain[2*len] = 0; | |
2499 | ses->serverDomain[1+(2*len)] = 0; | |
2500 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
2501 | else { |
2502 | if(ses->serverDomain) | |
08775834 | 2503 | kfree(ses->serverDomain); |
1da177e4 | 2504 | ses->serverDomain = |
e915fc49 | 2505 | kzalloc(2,GFP_KERNEL); |
a424f8bf SF |
2506 | } |
2507 | } else {/* no room use dummy domain&NOS */ | |
2508 | if(ses->serverDomain) | |
2509 | kfree(ses->serverDomain); | |
e915fc49 | 2510 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
a424f8bf SF |
2511 | if(ses->serverNOS) |
2512 | kfree(ses->serverNOS); | |
e915fc49 | 2513 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2514 | } |
2515 | } else { /* ASCII */ | |
2516 | ||
2517 | len = strnlen(bcc_ptr, 1024); | |
2518 | if (((long) bcc_ptr + len) - (long) | |
2519 | pByteArea(smb_buffer_response) | |
2520 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
2521 | if(ses->serverOS) |
2522 | kfree(ses->serverOS); | |
e915fc49 | 2523 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
2524 | strncpy(ses->serverOS, bcc_ptr, len); |
2525 | ||
2526 | bcc_ptr += len; | |
2527 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2528 | bcc_ptr++; | |
2529 | ||
2530 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2531 | if(ses->serverNOS) |
2532 | kfree(ses->serverNOS); | |
e915fc49 | 2533 | ses->serverNOS = kzalloc(len + 1,GFP_KERNEL); |
1da177e4 LT |
2534 | strncpy(ses->serverNOS, bcc_ptr, len); |
2535 | bcc_ptr += len; | |
2536 | bcc_ptr[0] = 0; | |
2537 | bcc_ptr++; | |
2538 | ||
2539 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf | 2540 | if(ses->serverDomain) |
08775834 | 2541 | kfree(ses->serverDomain); |
e915fc49 | 2542 | ses->serverDomain = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
2543 | strncpy(ses->serverDomain, bcc_ptr, len); |
2544 | bcc_ptr += len; | |
2545 | bcc_ptr[0] = 0; | |
2546 | bcc_ptr++; | |
2547 | } else | |
2548 | cFYI(1, | |
2549 | ("Variable field of length %d extends beyond end of smb ", | |
2550 | len)); | |
2551 | } | |
2552 | } else { | |
2553 | cERROR(1, | |
2554 | (" Security Blob Length extends beyond end of SMB")); | |
2555 | } | |
2556 | } else { | |
2557 | cERROR(1, ("No session structure passed in.")); | |
2558 | } | |
2559 | } else { | |
2560 | cERROR(1, | |
2561 | (" Invalid Word count %d: ", | |
2562 | smb_buffer_response->WordCount)); | |
2563 | rc = -EIO; | |
2564 | } | |
2565 | ||
2566 | if (smb_buffer) | |
2567 | cifs_buf_release(smb_buffer); | |
2568 | ||
2569 | return rc; | |
2570 | } | |
2571 | ||
2572 | static int | |
2573 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
2574 | struct cifsSesInfo *ses, int * pNTLMv2_flag, | |
2575 | const struct nls_table *nls_codepage) | |
2576 | { | |
2577 | struct smb_hdr *smb_buffer; | |
2578 | struct smb_hdr *smb_buffer_response; | |
2579 | SESSION_SETUP_ANDX *pSMB; | |
2580 | SESSION_SETUP_ANDX *pSMBr; | |
2581 | char *bcc_ptr; | |
2582 | char *domain; | |
2583 | int rc = 0; | |
2584 | int remaining_words = 0; | |
2585 | int bytes_returned = 0; | |
2586 | int len; | |
2587 | int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); | |
2588 | PNEGOTIATE_MESSAGE SecurityBlob; | |
2589 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2590 | __u32 negotiate_flags, capabilities; | |
2591 | __u16 count; | |
2592 | ||
12b3b8ff | 2593 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
1da177e4 LT |
2594 | if(ses == NULL) |
2595 | return -EINVAL; | |
2596 | domain = ses->domainName; | |
2597 | *pNTLMv2_flag = FALSE; | |
2598 | smb_buffer = cifs_buf_get(); | |
2599 | if (smb_buffer == NULL) { | |
2600 | return -ENOMEM; | |
2601 | } | |
2602 | smb_buffer_response = smb_buffer; | |
2603 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2604 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2605 | ||
2606 | /* send SMBsessionSetup here */ | |
2607 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2608 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2609 | |
2610 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2611 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2612 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2613 | ||
2614 | pSMB->req.AndXCommand = 0xFF; | |
2615 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2616 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2617 | ||
2618 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2619 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2620 | ||
2621 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2622 | CAP_EXTENDED_SECURITY; | |
2623 | if (ses->capabilities & CAP_UNICODE) { | |
2624 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2625 | capabilities |= CAP_UNICODE; | |
2626 | } | |
2627 | if (ses->capabilities & CAP_STATUS32) { | |
2628 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2629 | capabilities |= CAP_STATUS32; | |
2630 | } | |
2631 | if (ses->capabilities & CAP_DFS) { | |
2632 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2633 | capabilities |= CAP_DFS; | |
2634 | } | |
2635 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2636 | ||
2637 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2638 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2639 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2640 | SecurityBlob->MessageType = NtLmNegotiate; | |
2641 | negotiate_flags = | |
2642 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2643 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2644 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 LT |
2645 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
2646 | if(sign_CIFS_PDUs) | |
2647 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; | |
3979877e SF |
2648 | /* if(ntlmv2_support) |
2649 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ | |
1da177e4 LT |
2650 | /* setup pointers to domain name and workstation name */ |
2651 | bcc_ptr += SecurityBlobLength; | |
2652 | ||
2653 | SecurityBlob->WorkstationName.Buffer = 0; | |
2654 | SecurityBlob->WorkstationName.Length = 0; | |
2655 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2656 | ||
12b3b8ff SF |
2657 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2658 | along with username on auth request (ie the response to challenge) */ | |
2659 | SecurityBlob->DomainName.Buffer = 0; | |
2660 | SecurityBlob->DomainName.Length = 0; | |
2661 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2662 | if (ses->capabilities & CAP_UNICODE) { |
2663 | if ((long) bcc_ptr % 2) { | |
2664 | *bcc_ptr = 0; | |
2665 | bcc_ptr++; | |
2666 | } | |
2667 | ||
2668 | bytes_returned = | |
e89dc920 | 2669 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2670 | 32, nls_codepage); |
2671 | bcc_ptr += 2 * bytes_returned; | |
2672 | bytes_returned = | |
e89dc920 | 2673 | cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32, |
1da177e4 LT |
2674 | nls_codepage); |
2675 | bcc_ptr += 2 * bytes_returned; | |
2676 | bcc_ptr += 2; /* null terminate Linux version */ | |
2677 | bytes_returned = | |
e89dc920 | 2678 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2679 | 64, nls_codepage); |
2680 | bcc_ptr += 2 * bytes_returned; | |
2681 | *(bcc_ptr + 1) = 0; | |
2682 | *(bcc_ptr + 2) = 0; | |
2683 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2684 | *(bcc_ptr + 1) = 0; | |
2685 | *(bcc_ptr + 2) = 0; | |
2686 | bcc_ptr += 2; /* null domain */ | |
2687 | } else { /* ASCII */ | |
2688 | strcpy(bcc_ptr, "Linux version "); | |
2689 | bcc_ptr += strlen("Linux version "); | |
2690 | strcpy(bcc_ptr, system_utsname.release); | |
2691 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2692 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2693 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2694 | bcc_ptr++; /* empty domain field */ | |
2695 | *bcc_ptr = 0; | |
2696 | } | |
2697 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2698 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2699 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2700 | smb_buffer->smb_buf_length += count; | |
2701 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2702 | ||
2703 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2704 | &bytes_returned, 1); | |
2705 | ||
2706 | if (smb_buffer_response->Status.CifsError == | |
2707 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2708 | rc = 0; | |
2709 | ||
2710 | if (rc) { | |
2711 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2712 | } else if ((smb_buffer_response->WordCount == 3) | |
2713 | || (smb_buffer_response->WordCount == 4)) { | |
2714 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2715 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2716 | ||
2717 | if (action & GUEST_LOGIN) | |
2718 | cFYI(1, (" Guest login")); | |
2719 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
2720 | ||
2721 | bcc_ptr = pByteArea(smb_buffer_response); | |
2722 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2723 | ||
2724 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2725 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2726 | cFYI(1, | |
2727 | ("Unexpected NTLMSSP message type received %d", | |
2728 | SecurityBlob2->MessageType)); | |
2729 | } else if (ses) { | |
2730 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ | |
12b3b8ff | 2731 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2732 | if ((pSMBr->resp.hdr.WordCount == 3) |
2733 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2734 | && (blob_len < | |
2735 | pSMBr->resp.ByteCount))) { | |
2736 | ||
2737 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2738 | bcc_ptr += blob_len; | |
12b3b8ff | 2739 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2740 | blob_len)); |
2741 | } | |
2742 | ||
12b3b8ff | 2743 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2744 | |
2745 | memcpy(ses->server->cryptKey, | |
2746 | SecurityBlob2->Challenge, | |
2747 | CIFS_CRYPTO_KEY_SIZE); | |
12b3b8ff SF |
2748 | if(SecurityBlob2->NegotiateFlags & |
2749 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) | |
1da177e4 LT |
2750 | *pNTLMv2_flag = TRUE; |
2751 | ||
2752 | if((SecurityBlob2->NegotiateFlags & | |
2753 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
2754 | || (sign_CIFS_PDUs > 1)) | |
2755 | ses->server->secMode |= | |
2756 | SECMODE_SIGN_REQUIRED; | |
2757 | if ((SecurityBlob2->NegotiateFlags & | |
2758 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) | |
2759 | ses->server->secMode |= | |
2760 | SECMODE_SIGN_ENABLED; | |
2761 | ||
2762 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2763 | if ((long) (bcc_ptr) % 2) { | |
2764 | remaining_words = | |
2765 | (BCC(smb_buffer_response) | |
2766 | - 1) / 2; | |
2767 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2768 | } else { | |
2769 | remaining_words = | |
2770 | BCC | |
2771 | (smb_buffer_response) / 2; | |
2772 | } | |
2773 | len = | |
2774 | UniStrnlen((wchar_t *) bcc_ptr, | |
2775 | remaining_words - 1); | |
2776 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2777 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2778 | terminating last Unicode string in response */ | |
a424f8bf SF |
2779 | if(ses->serverOS) |
2780 | kfree(ses->serverOS); | |
1da177e4 | 2781 | ses->serverOS = |
e915fc49 | 2782 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2783 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2784 | (__le16 *) |
1da177e4 LT |
2785 | bcc_ptr, len, |
2786 | nls_codepage); | |
2787 | bcc_ptr += 2 * (len + 1); | |
2788 | remaining_words -= len + 1; | |
2789 | ses->serverOS[2 * len] = 0; | |
2790 | ses->serverOS[1 + (2 * len)] = 0; | |
2791 | if (remaining_words > 0) { | |
2792 | len = UniStrnlen((wchar_t *) | |
2793 | bcc_ptr, | |
2794 | remaining_words | |
2795 | - 1); | |
a424f8bf SF |
2796 | if(ses->serverNOS) |
2797 | kfree(ses->serverNOS); | |
1da177e4 | 2798 | ses->serverNOS = |
e915fc49 | 2799 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2800 | GFP_KERNEL); |
2801 | cifs_strfromUCS_le(ses-> | |
2802 | serverNOS, | |
e89dc920 | 2803 | (__le16 *) |
1da177e4 LT |
2804 | bcc_ptr, |
2805 | len, | |
2806 | nls_codepage); | |
2807 | bcc_ptr += 2 * (len + 1); | |
2808 | ses->serverNOS[2 * len] = 0; | |
2809 | ses->serverNOS[1 + | |
2810 | (2 * len)] = 0; | |
2811 | remaining_words -= len + 1; | |
2812 | if (remaining_words > 0) { | |
2813 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2814 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
a424f8bf SF |
2815 | if(ses->serverDomain) |
2816 | kfree(ses->serverDomain); | |
1da177e4 | 2817 | ses->serverDomain = |
e915fc49 | 2818 | kzalloc(2 * |
1da177e4 LT |
2819 | (len + |
2820 | 1), | |
2821 | GFP_KERNEL); | |
2822 | cifs_strfromUCS_le | |
e89dc920 SF |
2823 | (ses->serverDomain, |
2824 | (__le16 *)bcc_ptr, | |
2825 | len, nls_codepage); | |
1da177e4 LT |
2826 | bcc_ptr += |
2827 | 2 * (len + 1); | |
e89dc920 | 2828 | ses->serverDomain[2*len] |
1da177e4 | 2829 | = 0; |
e89dc920 SF |
2830 | ses->serverDomain |
2831 | [1 + (2 * len)] | |
1da177e4 LT |
2832 | = 0; |
2833 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
2834 | else { |
2835 | if(ses->serverDomain) | |
2836 | kfree(ses->serverDomain); | |
1da177e4 | 2837 | ses->serverDomain = |
e915fc49 | 2838 | kzalloc(2, |
1da177e4 | 2839 | GFP_KERNEL); |
a424f8bf | 2840 | } |
1da177e4 | 2841 | } else { /* no room so create dummy domain and NOS string */ |
a424f8bf SF |
2842 | if(ses->serverDomain); |
2843 | kfree(ses->serverDomain); | |
1da177e4 | 2844 | ses->serverDomain = |
e915fc49 | 2845 | kzalloc(2, GFP_KERNEL); |
a424f8bf SF |
2846 | if(ses->serverNOS) |
2847 | kfree(ses->serverNOS); | |
1da177e4 | 2848 | ses->serverNOS = |
e915fc49 | 2849 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2850 | } |
2851 | } else { /* ASCII */ | |
2852 | len = strnlen(bcc_ptr, 1024); | |
2853 | if (((long) bcc_ptr + len) - (long) | |
2854 | pByteArea(smb_buffer_response) | |
2855 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
2856 | if(ses->serverOS) |
2857 | kfree(ses->serverOS); | |
1da177e4 | 2858 | ses->serverOS = |
e915fc49 | 2859 | kzalloc(len + 1, |
1da177e4 LT |
2860 | GFP_KERNEL); |
2861 | strncpy(ses->serverOS, | |
2862 | bcc_ptr, len); | |
2863 | ||
2864 | bcc_ptr += len; | |
2865 | bcc_ptr[0] = 0; /* null terminate string */ | |
2866 | bcc_ptr++; | |
2867 | ||
2868 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2869 | if(ses->serverNOS) |
2870 | kfree(ses->serverNOS); | |
1da177e4 | 2871 | ses->serverNOS = |
e915fc49 | 2872 | kzalloc(len + 1, |
1da177e4 LT |
2873 | GFP_KERNEL); |
2874 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2875 | bcc_ptr += len; | |
2876 | bcc_ptr[0] = 0; | |
2877 | bcc_ptr++; | |
2878 | ||
2879 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
2880 | if(ses->serverDomain) |
2881 | kfree(ses->serverDomain); | |
1da177e4 | 2882 | ses->serverDomain = |
e915fc49 | 2883 | kzalloc(len + 1, |
1da177e4 LT |
2884 | GFP_KERNEL); |
2885 | strncpy(ses->serverDomain, bcc_ptr, len); | |
2886 | bcc_ptr += len; | |
2887 | bcc_ptr[0] = 0; | |
2888 | bcc_ptr++; | |
2889 | } else | |
2890 | cFYI(1, | |
12b3b8ff | 2891 | ("Variable field of length %d extends beyond end of smb", |
1da177e4 LT |
2892 | len)); |
2893 | } | |
2894 | } else { | |
2895 | cERROR(1, | |
2896 | (" Security Blob Length extends beyond end of SMB")); | |
2897 | } | |
2898 | } else { | |
2899 | cERROR(1, ("No session structure passed in.")); | |
2900 | } | |
2901 | } else { | |
2902 | cERROR(1, | |
5815449d | 2903 | (" Invalid Word count %d:", |
1da177e4 LT |
2904 | smb_buffer_response->WordCount)); |
2905 | rc = -EIO; | |
2906 | } | |
2907 | ||
2908 | if (smb_buffer) | |
2909 | cifs_buf_release(smb_buffer); | |
2910 | ||
2911 | return rc; | |
2912 | } | |
2913 | static int | |
2914 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2915 | char *ntlm_session_key, int ntlmv2_flag, | |
2916 | const struct nls_table *nls_codepage) | |
2917 | { | |
2918 | struct smb_hdr *smb_buffer; | |
2919 | struct smb_hdr *smb_buffer_response; | |
2920 | SESSION_SETUP_ANDX *pSMB; | |
2921 | SESSION_SETUP_ANDX *pSMBr; | |
2922 | char *bcc_ptr; | |
2923 | char *user; | |
2924 | char *domain; | |
2925 | int rc = 0; | |
2926 | int remaining_words = 0; | |
2927 | int bytes_returned = 0; | |
2928 | int len; | |
2929 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2930 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2931 | __u32 negotiate_flags, capabilities; | |
2932 | __u16 count; | |
2933 | ||
2934 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
2935 | if(ses == NULL) | |
2936 | return -EINVAL; | |
2937 | user = ses->userName; | |
2938 | domain = ses->domainName; | |
2939 | smb_buffer = cifs_buf_get(); | |
2940 | if (smb_buffer == NULL) { | |
2941 | return -ENOMEM; | |
2942 | } | |
2943 | smb_buffer_response = smb_buffer; | |
2944 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2945 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2946 | ||
2947 | /* send SMBsessionSetup here */ | |
2948 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2949 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2950 | |
2951 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2952 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2953 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2954 | pSMB->req.AndXCommand = 0xFF; | |
2955 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2956 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2957 | ||
2958 | pSMB->req.hdr.Uid = ses->Suid; | |
2959 | ||
2960 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2961 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2962 | ||
2963 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2964 | CAP_EXTENDED_SECURITY; | |
2965 | if (ses->capabilities & CAP_UNICODE) { | |
2966 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2967 | capabilities |= CAP_UNICODE; | |
2968 | } | |
2969 | if (ses->capabilities & CAP_STATUS32) { | |
2970 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2971 | capabilities |= CAP_STATUS32; | |
2972 | } | |
2973 | if (ses->capabilities & CAP_DFS) { | |
2974 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2975 | capabilities |= CAP_DFS; | |
2976 | } | |
2977 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2978 | ||
2979 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2980 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2981 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2982 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2983 | bcc_ptr += SecurityBlobLength; | |
2984 | negotiate_flags = | |
2985 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | | |
2986 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2987 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
2988 | if(sign_CIFS_PDUs) | |
2989 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; | |
2990 | if(ntlmv2_flag) | |
2991 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2992 | ||
2993 | /* setup pointers to domain name and workstation name */ | |
2994 | ||
2995 | SecurityBlob->WorkstationName.Buffer = 0; | |
2996 | SecurityBlob->WorkstationName.Length = 0; | |
2997 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2998 | SecurityBlob->SessionKey.Length = 0; | |
2999 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3000 | SecurityBlob->SessionKey.Buffer = 0; | |
3001 | ||
3002 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3003 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3004 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3005 | ||
3006 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3007 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3008 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3009 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3010 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3011 | SecurityBlob->NtChallengeResponse.Buffer = |
3012 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3013 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3014 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3015 | |
3016 | if (ses->capabilities & CAP_UNICODE) { | |
3017 | if (domain == NULL) { | |
3018 | SecurityBlob->DomainName.Buffer = 0; | |
3019 | SecurityBlob->DomainName.Length = 0; | |
3020 | SecurityBlob->DomainName.MaximumLength = 0; | |
3021 | } else { | |
3022 | __u16 len = | |
e89dc920 | 3023 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
3024 | nls_codepage); |
3025 | len *= 2; | |
3026 | SecurityBlob->DomainName.MaximumLength = | |
3027 | cpu_to_le16(len); | |
3028 | SecurityBlob->DomainName.Buffer = | |
3029 | cpu_to_le32(SecurityBlobLength); | |
3030 | bcc_ptr += len; | |
3031 | SecurityBlobLength += len; | |
3032 | SecurityBlob->DomainName.Length = | |
3033 | cpu_to_le16(len); | |
3034 | } | |
3035 | if (user == NULL) { | |
3036 | SecurityBlob->UserName.Buffer = 0; | |
3037 | SecurityBlob->UserName.Length = 0; | |
3038 | SecurityBlob->UserName.MaximumLength = 0; | |
3039 | } else { | |
3040 | __u16 len = | |
e89dc920 | 3041 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 LT |
3042 | nls_codepage); |
3043 | len *= 2; | |
3044 | SecurityBlob->UserName.MaximumLength = | |
3045 | cpu_to_le16(len); | |
3046 | SecurityBlob->UserName.Buffer = | |
3047 | cpu_to_le32(SecurityBlobLength); | |
3048 | bcc_ptr += len; | |
3049 | SecurityBlobLength += len; | |
3050 | SecurityBlob->UserName.Length = | |
3051 | cpu_to_le16(len); | |
3052 | } | |
3053 | ||
e89dc920 | 3054 | /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); |
1da177e4 LT |
3055 | SecurityBlob->WorkstationName.Length *= 2; |
3056 | SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3057 | SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength); | |
3058 | bcc_ptr += SecurityBlob->WorkstationName.Length; | |
3059 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
3060 | SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
3061 | ||
3062 | if ((long) bcc_ptr % 2) { | |
3063 | *bcc_ptr = 0; | |
3064 | bcc_ptr++; | |
3065 | } | |
3066 | bytes_returned = | |
e89dc920 | 3067 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3068 | 32, nls_codepage); |
3069 | bcc_ptr += 2 * bytes_returned; | |
3070 | bytes_returned = | |
e89dc920 | 3071 | cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32, |
1da177e4 LT |
3072 | nls_codepage); |
3073 | bcc_ptr += 2 * bytes_returned; | |
3074 | bcc_ptr += 2; /* null term version string */ | |
3075 | bytes_returned = | |
e89dc920 | 3076 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3077 | 64, nls_codepage); |
3078 | bcc_ptr += 2 * bytes_returned; | |
3079 | *(bcc_ptr + 1) = 0; | |
3080 | *(bcc_ptr + 2) = 0; | |
3081 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3082 | *(bcc_ptr + 1) = 0; | |
3083 | *(bcc_ptr + 2) = 0; | |
3084 | bcc_ptr += 2; /* null domain */ | |
3085 | } else { /* ASCII */ | |
3086 | if (domain == NULL) { | |
3087 | SecurityBlob->DomainName.Buffer = 0; | |
3088 | SecurityBlob->DomainName.Length = 0; | |
3089 | SecurityBlob->DomainName.MaximumLength = 0; | |
3090 | } else { | |
3091 | __u16 len; | |
3092 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
3093 | strncpy(bcc_ptr, domain, 63); | |
3094 | len = strnlen(domain, 64); | |
3095 | SecurityBlob->DomainName.MaximumLength = | |
3096 | cpu_to_le16(len); | |
3097 | SecurityBlob->DomainName.Buffer = | |
3098 | cpu_to_le32(SecurityBlobLength); | |
3099 | bcc_ptr += len; | |
3100 | SecurityBlobLength += len; | |
3101 | SecurityBlob->DomainName.Length = cpu_to_le16(len); | |
3102 | } | |
3103 | if (user == NULL) { | |
3104 | SecurityBlob->UserName.Buffer = 0; | |
3105 | SecurityBlob->UserName.Length = 0; | |
3106 | SecurityBlob->UserName.MaximumLength = 0; | |
3107 | } else { | |
3108 | __u16 len; | |
3109 | strncpy(bcc_ptr, user, 63); | |
3110 | len = strnlen(user, 64); | |
3111 | SecurityBlob->UserName.MaximumLength = | |
3112 | cpu_to_le16(len); | |
3113 | SecurityBlob->UserName.Buffer = | |
3114 | cpu_to_le32(SecurityBlobLength); | |
3115 | bcc_ptr += len; | |
3116 | SecurityBlobLength += len; | |
3117 | SecurityBlob->UserName.Length = cpu_to_le16(len); | |
3118 | } | |
3119 | /* BB fill in our workstation name if known BB */ | |
3120 | ||
3121 | strcpy(bcc_ptr, "Linux version "); | |
3122 | bcc_ptr += strlen("Linux version "); | |
3123 | strcpy(bcc_ptr, system_utsname.release); | |
3124 | bcc_ptr += strlen(system_utsname.release) + 1; | |
3125 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
3126 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3127 | bcc_ptr++; /* null domain */ | |
3128 | *bcc_ptr = 0; | |
3129 | } | |
3130 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3131 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3132 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3133 | smb_buffer->smb_buf_length += count; | |
3134 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3135 | ||
3136 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
3137 | &bytes_returned, 1); | |
3138 | if (rc) { | |
3139 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
3140 | } else if ((smb_buffer_response->WordCount == 3) | |
3141 | || (smb_buffer_response->WordCount == 4)) { | |
3142 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
3143 | __u16 blob_len = | |
3144 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
3145 | if (action & GUEST_LOGIN) | |
3146 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
3147 | /* if(SecurityBlob2->MessageType != NtLm??){ | |
3148 | cFYI("Unexpected message type on auth response is %d ")); | |
3149 | } */ | |
3150 | if (ses) { | |
3151 | cFYI(1, | |
3152 | ("Does UID on challenge %d match auth response UID %d ", | |
3153 | ses->Suid, smb_buffer_response->Uid)); | |
3154 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */ | |
3155 | bcc_ptr = pByteArea(smb_buffer_response); | |
3156 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
3157 | if ((pSMBr->resp.hdr.WordCount == 3) | |
3158 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3159 | && (blob_len < | |
3160 | pSMBr->resp.ByteCount))) { | |
3161 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3162 | bcc_ptr += | |
3163 | blob_len; | |
3164 | cFYI(1, | |
3165 | ("Security Blob Length %d ", | |
3166 | blob_len)); | |
3167 | } | |
3168 | ||
3169 | cFYI(1, | |
3170 | ("NTLMSSP response to Authenticate ")); | |
3171 | ||
3172 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3173 | if ((long) (bcc_ptr) % 2) { | |
3174 | remaining_words = | |
3175 | (BCC(smb_buffer_response) | |
3176 | - 1) / 2; | |
3177 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3178 | } else { | |
3179 | remaining_words = BCC(smb_buffer_response) / 2; | |
3180 | } | |
3181 | len = | |
3182 | UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); | |
3183 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
3184 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3185 | terminating last Unicode string in response */ | |
a424f8bf | 3186 | if(ses->serverOS) |
08775834 | 3187 | kfree(ses->serverOS); |
1da177e4 | 3188 | ses->serverOS = |
e915fc49 | 3189 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3190 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3191 | (__le16 *) |
1da177e4 LT |
3192 | bcc_ptr, len, |
3193 | nls_codepage); | |
3194 | bcc_ptr += 2 * (len + 1); | |
3195 | remaining_words -= len + 1; | |
3196 | ses->serverOS[2 * len] = 0; | |
3197 | ses->serverOS[1 + (2 * len)] = 0; | |
3198 | if (remaining_words > 0) { | |
3199 | len = UniStrnlen((wchar_t *) | |
3200 | bcc_ptr, | |
3201 | remaining_words | |
3202 | - 1); | |
a424f8bf SF |
3203 | if(ses->serverNOS) |
3204 | kfree(ses->serverNOS); | |
1da177e4 | 3205 | ses->serverNOS = |
e915fc49 | 3206 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3207 | GFP_KERNEL); |
3208 | cifs_strfromUCS_le(ses-> | |
3209 | serverNOS, | |
e89dc920 | 3210 | (__le16 *) |
1da177e4 LT |
3211 | bcc_ptr, |
3212 | len, | |
3213 | nls_codepage); | |
3214 | bcc_ptr += 2 * (len + 1); | |
3215 | ses->serverNOS[2 * len] = 0; | |
3216 | ses->serverNOS[1+(2*len)] = 0; | |
3217 | remaining_words -= len + 1; | |
3218 | if (remaining_words > 0) { | |
3219 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
3220 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ | |
a424f8bf SF |
3221 | if(ses->serverDomain) |
3222 | kfree(ses->serverDomain); | |
1da177e4 | 3223 | ses->serverDomain = |
e915fc49 | 3224 | kzalloc(2 * |
1da177e4 LT |
3225 | (len + |
3226 | 1), | |
3227 | GFP_KERNEL); | |
3228 | cifs_strfromUCS_le | |
3229 | (ses-> | |
3230 | serverDomain, | |
e89dc920 | 3231 | (__le16 *) |
1da177e4 LT |
3232 | bcc_ptr, len, |
3233 | nls_codepage); | |
3234 | bcc_ptr += | |
3235 | 2 * (len + 1); | |
3236 | ses-> | |
3237 | serverDomain[2 | |
3238 | * len] | |
3239 | = 0; | |
3240 | ses-> | |
3241 | serverDomain[1 | |
3242 | + | |
3243 | (2 | |
3244 | * | |
3245 | len)] | |
3246 | = 0; | |
3247 | } /* else no more room so create dummy domain string */ | |
a424f8bf SF |
3248 | else { |
3249 | if(ses->serverDomain) | |
3250 | kfree(ses->serverDomain); | |
e915fc49 | 3251 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3252 | } |
1da177e4 | 3253 | } else { /* no room so create dummy domain and NOS string */ |
a424f8bf SF |
3254 | if(ses->serverDomain) |
3255 | kfree(ses->serverDomain); | |
e915fc49 | 3256 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
a424f8bf SF |
3257 | if(ses->serverNOS) |
3258 | kfree(ses->serverNOS); | |
e915fc49 | 3259 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3260 | } |
3261 | } else { /* ASCII */ | |
3262 | len = strnlen(bcc_ptr, 1024); | |
3263 | if (((long) bcc_ptr + len) - | |
3264 | (long) pByteArea(smb_buffer_response) | |
3265 | <= BCC(smb_buffer_response)) { | |
a424f8bf SF |
3266 | if(ses->serverOS) |
3267 | kfree(ses->serverOS); | |
e915fc49 | 3268 | ses->serverOS = kzalloc(len + 1,GFP_KERNEL); |
1da177e4 LT |
3269 | strncpy(ses->serverOS,bcc_ptr, len); |
3270 | ||
3271 | bcc_ptr += len; | |
3272 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3273 | bcc_ptr++; | |
3274 | ||
3275 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
3276 | if(ses->serverNOS) |
3277 | kfree(ses->serverNOS); | |
e915fc49 | 3278 | ses->serverNOS = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
3279 | strncpy(ses->serverNOS, bcc_ptr, len); |
3280 | bcc_ptr += len; | |
3281 | bcc_ptr[0] = 0; | |
3282 | bcc_ptr++; | |
3283 | ||
3284 | len = strnlen(bcc_ptr, 1024); | |
a424f8bf SF |
3285 | if(ses->serverDomain) |
3286 | kfree(ses->serverDomain); | |
e915fc49 | 3287 | ses->serverDomain = kzalloc(len+1,GFP_KERNEL); |
1da177e4 LT |
3288 | strncpy(ses->serverDomain, bcc_ptr, len); |
3289 | bcc_ptr += len; | |
3290 | bcc_ptr[0] = 0; | |
3291 | bcc_ptr++; | |
3292 | } else | |
3293 | cFYI(1, | |
3294 | ("Variable field of length %d extends beyond end of smb ", | |
3295 | len)); | |
3296 | } | |
3297 | } else { | |
3298 | cERROR(1, | |
3299 | (" Security Blob Length extends beyond end of SMB")); | |
3300 | } | |
3301 | } else { | |
3302 | cERROR(1, ("No session structure passed in.")); | |
3303 | } | |
3304 | } else { | |
3305 | cERROR(1, | |
3306 | (" Invalid Word count %d: ", | |
3307 | smb_buffer_response->WordCount)); | |
3308 | rc = -EIO; | |
3309 | } | |
3310 | ||
3311 | if (smb_buffer) | |
3312 | cifs_buf_release(smb_buffer); | |
3313 | ||
3314 | return rc; | |
3315 | } | |
3316 | ||
3317 | int | |
3318 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3319 | const char *tree, struct cifsTconInfo *tcon, | |
3320 | const struct nls_table *nls_codepage) | |
3321 | { | |
3322 | struct smb_hdr *smb_buffer; | |
3323 | struct smb_hdr *smb_buffer_response; | |
3324 | TCONX_REQ *pSMB; | |
3325 | TCONX_RSP *pSMBr; | |
3326 | unsigned char *bcc_ptr; | |
3327 | int rc = 0; | |
3328 | int length; | |
3329 | __u16 count; | |
3330 | ||
3331 | if (ses == NULL) | |
3332 | return -EIO; | |
3333 | ||
3334 | smb_buffer = cifs_buf_get(); | |
3335 | if (smb_buffer == NULL) { | |
3336 | return -ENOMEM; | |
3337 | } | |
3338 | smb_buffer_response = smb_buffer; | |
3339 | ||
3340 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3341 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3342 | |
3343 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3344 | smb_buffer->Uid = ses->Suid; |
3345 | pSMB = (TCONX_REQ *) smb_buffer; | |
3346 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3347 | ||
3348 | pSMB->AndXCommand = 0xFF; | |
3349 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3350 | bcc_ptr = &pSMB->Password[0]; |
eeac8047 SF |
3351 | if((ses->server->secMode) & SECMODE_USER) { |
3352 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ | |
7c7b25bc | 3353 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3354 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3355 | /* already aligned so no need to do it below */ |
eeac8047 | 3356 | } else { |
7c7b25bc | 3357 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3358 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3359 | specified as required (when that support is added to | |
3360 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3361 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3362 | by Samba (not sure whether other servers allow |
3363 | NTLMv2 password here) */ | |
7c7b25bc SF |
3364 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
3365 | if((extended_security & CIFSSEC_MAY_LANMAN) && | |
3366 | (ses->server->secType == LANMAN)) | |
3367 | calc_lanman_hash(ses, bcc_ptr); | |
3368 | else | |
3369 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3370 | SMBNTencrypt(ses->password, |
3371 | ses->server->cryptKey, | |
3372 | bcc_ptr); | |
3373 | ||
7c7b25bc SF |
3374 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
3375 | if(ses->capabilities & CAP_UNICODE) { | |
3376 | /* must align unicode strings */ | |
3377 | *bcc_ptr = 0; /* null byte password */ | |
3378 | bcc_ptr++; | |
3379 | } | |
eeac8047 | 3380 | } |
1da177e4 | 3381 | |
a878fb22 SF |
3382 | if(ses->server->secMode & |
3383 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
3384 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3385 | ||
3386 | if (ses->capabilities & CAP_STATUS32) { | |
3387 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3388 | } | |
3389 | if (ses->capabilities & CAP_DFS) { | |
3390 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3391 | } | |
3392 | if (ses->capabilities & CAP_UNICODE) { | |
3393 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3394 | length = | |
a878fb22 SF |
3395 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3396 | 6 /* max utf8 char length in bytes */ * | |
3397 | (/* server len*/ + 256 /* share len */), nls_codepage); | |
3398 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3399 | bcc_ptr += 2; /* skip trailing null */ |
3400 | } else { /* ASCII */ | |
1da177e4 LT |
3401 | strcpy(bcc_ptr, tree); |
3402 | bcc_ptr += strlen(tree) + 1; | |
3403 | } | |
3404 | strcpy(bcc_ptr, "?????"); | |
3405 | bcc_ptr += strlen("?????"); | |
3406 | bcc_ptr += 1; | |
3407 | count = bcc_ptr - &pSMB->Password[0]; | |
3408 | pSMB->hdr.smb_buf_length += count; | |
3409 | pSMB->ByteCount = cpu_to_le16(count); | |
3410 | ||
3411 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3412 | ||
3413 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3414 | /* above now done in SendReceive */ | |
3415 | if ((rc == 0) && (tcon != NULL)) { | |
3416 | tcon->tidStatus = CifsGood; | |
3417 | tcon->tid = smb_buffer_response->Tid; | |
3418 | bcc_ptr = pByteArea(smb_buffer_response); | |
3419 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
3420 | /* skip service field (NB: this field is always ASCII) */ | |
3421 | bcc_ptr += length + 1; | |
3422 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); | |
3423 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3424 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3425 | if ((bcc_ptr + (2 * length)) - | |
3426 | pByteArea(smb_buffer_response) <= | |
3427 | BCC(smb_buffer_response)) { | |
f99d49ad | 3428 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3429 | tcon->nativeFileSystem = |
e915fc49 | 3430 | kzalloc(length + 2, GFP_KERNEL); |
1da177e4 | 3431 | cifs_strfromUCS_le(tcon->nativeFileSystem, |
e89dc920 | 3432 | (__le16 *) bcc_ptr, |
1da177e4 LT |
3433 | length, nls_codepage); |
3434 | bcc_ptr += 2 * length; | |
3435 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3436 | bcc_ptr[1] = 0; | |
3437 | bcc_ptr += 2; | |
3438 | } | |
3439 | /* else do not bother copying these informational fields */ | |
3440 | } else { | |
3441 | length = strnlen(bcc_ptr, 1024); | |
3442 | if ((bcc_ptr + length) - | |
3443 | pByteArea(smb_buffer_response) <= | |
3444 | BCC(smb_buffer_response)) { | |
f99d49ad | 3445 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3446 | tcon->nativeFileSystem = |
e915fc49 | 3447 | kzalloc(length + 1, GFP_KERNEL); |
1da177e4 LT |
3448 | strncpy(tcon->nativeFileSystem, bcc_ptr, |
3449 | length); | |
3450 | } | |
3451 | /* else do not bother copying these informational fields */ | |
3452 | } | |
3979877e SF |
3453 | if(smb_buffer_response->WordCount == 3) |
3454 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); | |
3455 | else | |
3456 | tcon->Flags = 0; | |
1da177e4 LT |
3457 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3458 | } else if ((rc == 0) && tcon == NULL) { | |
3459 | /* all we need to save for IPC$ connection */ | |
3460 | ses->ipc_tid = smb_buffer_response->Tid; | |
3461 | } | |
3462 | ||
3463 | if (smb_buffer) | |
3464 | cifs_buf_release(smb_buffer); | |
3465 | return rc; | |
3466 | } | |
3467 | ||
3468 | int | |
3469 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3470 | { | |
3471 | int rc = 0; | |
3472 | int xid; | |
3473 | struct cifsSesInfo *ses = NULL; | |
3474 | struct task_struct *cifsd_task; | |
3475 | ||
3476 | xid = GetXid(); | |
3477 | ||
3478 | if (cifs_sb->tcon) { | |
3479 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3480 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3481 | if (rc == -EBUSY) { | |
3482 | FreeXid(xid); | |
3483 | return 0; | |
3484 | } | |
3485 | tconInfoFree(cifs_sb->tcon); | |
3486 | if ((ses) && (ses->server)) { | |
3487 | /* save off task so we do not refer to ses later */ | |
3488 | cifsd_task = ses->server->tsk; | |
3489 | cFYI(1, ("About to do SMBLogoff ")); | |
3490 | rc = CIFSSMBLogoff(xid, ses); | |
3491 | if (rc == -EBUSY) { | |
3492 | FreeXid(xid); | |
3493 | return 0; | |
3494 | } else if (rc == -ESHUTDOWN) { | |
3495 | cFYI(1,("Waking up socket by sending it signal")); | |
f191401f | 3496 | if(cifsd_task) { |
1da177e4 | 3497 | send_sig(SIGKILL,cifsd_task,1); |
f191401f SF |
3498 | wait_for_completion(&cifsd_complete); |
3499 | } | |
1da177e4 LT |
3500 | rc = 0; |
3501 | } /* else - we have an smb session | |
3502 | left on this socket do not kill cifsd */ | |
3503 | } else | |
3504 | cFYI(1, ("No session or bad tcon")); | |
3505 | } | |
3506 | ||
3507 | cifs_sb->tcon = NULL; | |
041e0e3b NA |
3508 | if (ses) |
3509 | schedule_timeout_interruptible(msecs_to_jiffies(500)); | |
1da177e4 LT |
3510 | if (ses) |
3511 | sesInfoFree(ses); | |
3512 | ||
3513 | FreeXid(xid); | |
3514 | return rc; /* BB check if we should always return zero here */ | |
3515 | } | |
3516 | ||
3517 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
3518 | struct nls_table * nls_info) | |
3519 | { | |
3520 | int rc = 0; | |
7c7b25bc | 3521 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
1da177e4 | 3522 | int ntlmv2_flag = FALSE; |
ad009ac9 | 3523 | int first_time = 0; |
1da177e4 LT |
3524 | |
3525 | /* what if server changes its buffer size after dropping the session? */ | |
3526 | if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { | |
3527 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3528 | if(rc == -EAGAIN) /* retry only once on 1st time connection */ { | |
3529 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3530 | if(rc == -EAGAIN) | |
3531 | rc = -EHOSTDOWN; | |
3532 | } | |
3533 | if(rc == 0) { | |
3534 | spin_lock(&GlobalMid_Lock); | |
3535 | if(pSesInfo->server->tcpStatus != CifsExiting) | |
3536 | pSesInfo->server->tcpStatus = CifsGood; | |
3537 | else | |
3538 | rc = -EHOSTDOWN; | |
3539 | spin_unlock(&GlobalMid_Lock); | |
3540 | ||
3541 | } | |
ad009ac9 | 3542 | first_time = 1; |
1da177e4 LT |
3543 | } |
3544 | if (!rc) { | |
3545 | pSesInfo->capabilities = pSesInfo->server->capabilities; | |
3546 | if(linuxExtEnabled == 0) | |
3547 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3548 | /* pSesInfo->sequence_number = 0;*/ |
1da177e4 LT |
3549 | cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x Time Zone: %d", |
3550 | pSesInfo->server->secMode, | |
3551 | pSesInfo->server->capabilities, | |
3552 | pSesInfo->server->timeZone)); | |
301dc3e6 | 3553 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
60808233 | 3554 | if(experimEnabled > 1) |
3979877e SF |
3555 | rc = CIFS_SessSetup(xid, pSesInfo, |
3556 | first_time, nls_info); | |
301dc3e6 SF |
3557 | else |
3558 | #endif | |
3559 | if (extended_security | |
1da177e4 LT |
3560 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) |
3561 | && (pSesInfo->server->secType == NTLMSSP)) { | |
5815449d | 3562 | cFYI(1, ("New style sesssetup")); |
1da177e4 LT |
3563 | rc = CIFSSpnegoSessSetup(xid, pSesInfo, |
3564 | NULL /* security blob */, | |
3565 | 0 /* blob length */, | |
3566 | nls_info); | |
3567 | } else if (extended_security | |
3568 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3569 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3570 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3571 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3572 | pSesInfo, | |
3573 | &ntlmv2_flag, | |
3574 | nls_info); | |
3575 | if (!rc) { | |
3576 | if(ntlmv2_flag) { | |
3577 | char * v2_response; | |
3578 | cFYI(1,("Can use more secure NTLM version 2 password hash")); | |
3579 | if(CalcNTLMv2_partial_mac_key(pSesInfo, | |
3580 | nls_info)) { | |
3581 | rc = -ENOMEM; | |
3582 | goto ss_err_exit; | |
3583 | } else | |
3584 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
3585 | if(v2_response) { | |
3586 | CalcNTLMv2_response(pSesInfo,v2_response); | |
ad009ac9 SF |
3587 | /* if(first_time) |
3588 | cifs_calculate_ntlmv2_mac_key( | |
3589 | pSesInfo->server->mac_signing_key, | |
3590 | response, ntlm_session_key, */ | |
1da177e4 LT |
3591 | kfree(v2_response); |
3592 | /* BB Put dummy sig in SessSetup PDU? */ | |
3593 | } else { | |
3594 | rc = -ENOMEM; | |
3595 | goto ss_err_exit; | |
3596 | } | |
3597 | ||
3598 | } else { | |
3599 | SMBNTencrypt(pSesInfo->password, | |
3600 | pSesInfo->server->cryptKey, | |
3601 | ntlm_session_key); | |
3602 | ||
ad009ac9 SF |
3603 | if(first_time) |
3604 | cifs_calculate_mac_key( | |
3605 | pSesInfo->server->mac_signing_key, | |
3606 | ntlm_session_key, | |
3607 | pSesInfo->password); | |
1da177e4 LT |
3608 | } |
3609 | /* for better security the weaker lanman hash not sent | |
3610 | in AuthSessSetup so we no longer calculate it */ | |
3611 | ||
3612 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3613 | pSesInfo, | |
3614 | ntlm_session_key, | |
3615 | ntlmv2_flag, | |
3616 | nls_info); | |
3617 | } | |
3618 | } else { /* old style NTLM 0.12 session setup */ | |
3619 | SMBNTencrypt(pSesInfo->password, | |
3620 | pSesInfo->server->cryptKey, | |
3621 | ntlm_session_key); | |
3622 | ||
ad009ac9 SF |
3623 | if(first_time) |
3624 | cifs_calculate_mac_key( | |
3625 | pSesInfo->server->mac_signing_key, | |
3626 | ntlm_session_key, pSesInfo->password); | |
3627 | ||
1da177e4 LT |
3628 | rc = CIFSSessSetup(xid, pSesInfo, |
3629 | ntlm_session_key, nls_info); | |
3630 | } | |
3631 | if (rc) { | |
3632 | cERROR(1,("Send error in SessSetup = %d",rc)); | |
3633 | } else { | |
3634 | cFYI(1,("CIFS Session Established successfully")); | |
3635 | pSesInfo->status = CifsGood; | |
3636 | } | |
3637 | } | |
3638 | ss_err_exit: | |
3639 | return rc; | |
3640 | } | |
3641 |