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