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1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
b8643e1b | 4 | * Copyright (C) International Business Machines Corp., 2002,2005 |
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> |
1da177e4 LT |
32 | #include <asm/uaccess.h> |
33 | #include <asm/processor.h> | |
34 | #include "cifspdu.h" | |
35 | #include "cifsglob.h" | |
36 | #include "cifsproto.h" | |
37 | #include "cifs_unicode.h" | |
38 | #include "cifs_debug.h" | |
39 | #include "cifs_fs_sb.h" | |
40 | #include "ntlmssp.h" | |
41 | #include "nterr.h" | |
42 | #include "rfc1002pdu.h" | |
43 | ||
44 | #define CIFS_PORT 445 | |
45 | #define RFC1001_PORT 139 | |
46 | ||
47 | extern void SMBencrypt(unsigned char *passwd, unsigned char *c8, | |
48 | unsigned char *p24); | |
49 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, | |
50 | unsigned char *p24); | |
51 | ||
52 | extern mempool_t *cifs_req_poolp; | |
53 | ||
54 | struct smb_vol { | |
55 | char *username; | |
56 | char *password; | |
57 | char *domainname; | |
58 | char *UNC; | |
59 | char *UNCip; | |
60 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ | |
61 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
62 | char source_rfc1001_name[16]; /* netbios name of client */ | |
63 | uid_t linux_uid; | |
64 | gid_t linux_gid; | |
65 | mode_t file_mode; | |
66 | mode_t dir_mode; | |
67 | unsigned rw:1; | |
68 | unsigned retry:1; | |
69 | unsigned intr:1; | |
70 | unsigned setuids:1; | |
71 | unsigned noperm:1; | |
72 | unsigned no_psx_acl:1; /* set if posix acl support should be disabled */ | |
73 | unsigned no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
74 | unsigned server_ino:1; /* use inode numbers from server ie UniqueId */ | |
75 | unsigned direct_io:1; | |
6a0b4824 | 76 | unsigned remap:1; /* set to remap seven reserved chars in filenames */ |
1da177e4 LT |
77 | unsigned int rsize; |
78 | unsigned int wsize; | |
79 | unsigned int sockopt; | |
80 | unsigned short int port; | |
81 | }; | |
82 | ||
83 | static int ipv4_connect(struct sockaddr_in *psin_server, | |
84 | struct socket **csocket, | |
85 | char * netb_name); | |
86 | static int ipv6_connect(struct sockaddr_in6 *psin_server, | |
87 | struct socket **csocket); | |
88 | ||
89 | ||
90 | /* | |
91 | * cifs tcp session reconnection | |
92 | * | |
93 | * mark tcp session as reconnecting so temporarily locked | |
94 | * mark all smb sessions as reconnecting for tcp session | |
95 | * reconnect tcp session | |
96 | * wake up waiters on reconnection? - (not needed currently) | |
97 | */ | |
98 | ||
99 | int | |
100 | cifs_reconnect(struct TCP_Server_Info *server) | |
101 | { | |
102 | int rc = 0; | |
103 | struct list_head *tmp; | |
104 | struct cifsSesInfo *ses; | |
105 | struct cifsTconInfo *tcon; | |
106 | struct mid_q_entry * mid_entry; | |
107 | ||
108 | spin_lock(&GlobalMid_Lock); | |
109 | if(server->tcpStatus == CifsExiting) { | |
110 | /* the demux thread will exit normally | |
111 | next time through the loop */ | |
112 | spin_unlock(&GlobalMid_Lock); | |
113 | return rc; | |
114 | } else | |
115 | server->tcpStatus = CifsNeedReconnect; | |
116 | spin_unlock(&GlobalMid_Lock); | |
117 | server->maxBuf = 0; | |
118 | ||
119 | cFYI(1, ("Reconnecting tcp session ")); | |
120 | ||
121 | /* before reconnecting the tcp session, mark the smb session (uid) | |
122 | and the tid bad so they are not used until reconnected */ | |
123 | read_lock(&GlobalSMBSeslock); | |
124 | list_for_each(tmp, &GlobalSMBSessionList) { | |
125 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
126 | if (ses->server) { | |
127 | if (ses->server == server) { | |
128 | ses->status = CifsNeedReconnect; | |
129 | ses->ipc_tid = 0; | |
130 | } | |
131 | } | |
132 | /* else tcp and smb sessions need reconnection */ | |
133 | } | |
134 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
135 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
136 | if((tcon) && (tcon->ses) && (tcon->ses->server == server)) { | |
137 | tcon->tidStatus = CifsNeedReconnect; | |
138 | } | |
139 | } | |
140 | read_unlock(&GlobalSMBSeslock); | |
141 | /* do not want to be sending data on a socket we are freeing */ | |
142 | down(&server->tcpSem); | |
143 | if(server->ssocket) { | |
144 | cFYI(1,("State: 0x%x Flags: 0x%lx", server->ssocket->state, | |
145 | server->ssocket->flags)); | |
146 | server->ssocket->ops->shutdown(server->ssocket,SEND_SHUTDOWN); | |
147 | cFYI(1,("Post shutdown state: 0x%x Flags: 0x%lx", server->ssocket->state, | |
148 | server->ssocket->flags)); | |
149 | sock_release(server->ssocket); | |
150 | server->ssocket = NULL; | |
151 | } | |
152 | ||
153 | spin_lock(&GlobalMid_Lock); | |
154 | list_for_each(tmp, &server->pending_mid_q) { | |
155 | mid_entry = list_entry(tmp, struct | |
156 | mid_q_entry, | |
157 | qhead); | |
158 | if(mid_entry) { | |
159 | if(mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
09d1db5c SF |
160 | /* Mark other intransit requests as needing |
161 | retry so we do not immediately mark the | |
162 | session bad again (ie after we reconnect | |
163 | below) as they timeout too */ | |
1da177e4 LT |
164 | mid_entry->midState = MID_RETRY_NEEDED; |
165 | } | |
166 | } | |
167 | } | |
168 | spin_unlock(&GlobalMid_Lock); | |
169 | up(&server->tcpSem); | |
170 | ||
171 | while ((server->tcpStatus != CifsExiting) && (server->tcpStatus != CifsGood)) | |
172 | { | |
173 | if(server->protocolType == IPV6) { | |
174 | rc = ipv6_connect(&server->addr.sockAddr6,&server->ssocket); | |
175 | } else { | |
176 | rc = ipv4_connect(&server->addr.sockAddr, | |
177 | &server->ssocket, | |
178 | server->workstation_RFC1001_name); | |
179 | } | |
180 | if(rc) { | |
181 | set_current_state(TASK_INTERRUPTIBLE); | |
182 | schedule_timeout(3 * HZ); | |
183 | } else { | |
184 | atomic_inc(&tcpSesReconnectCount); | |
185 | spin_lock(&GlobalMid_Lock); | |
186 | if(server->tcpStatus != CifsExiting) | |
187 | server->tcpStatus = CifsGood; | |
ad009ac9 SF |
188 | server->sequence_number = 0; |
189 | spin_unlock(&GlobalMid_Lock); | |
1da177e4 LT |
190 | /* atomic_set(&server->inFlight,0);*/ |
191 | wake_up(&server->response_q); | |
192 | } | |
193 | } | |
194 | return rc; | |
195 | } | |
196 | ||
197 | static int | |
198 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
199 | { | |
200 | int length; | |
201 | unsigned int pdu_length, total_read; | |
202 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
203 | struct smb_hdr *bigbuf = NULL; |
204 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
205 | struct msghdr smb_msg; |
206 | struct kvec iov; | |
207 | struct socket *csocket = server->ssocket; | |
208 | struct list_head *tmp; | |
209 | struct cifsSesInfo *ses; | |
210 | struct task_struct *task_to_wake = NULL; | |
211 | struct mid_q_entry *mid_entry; | |
212 | char *temp; | |
b8643e1b | 213 | int isLargeBuf = FALSE; |
1da177e4 LT |
214 | |
215 | daemonize("cifsd"); | |
216 | allow_signal(SIGKILL); | |
217 | current->flags |= PF_MEMALLOC; | |
218 | server->tsk = current; /* save process info to wake at shutdown */ | |
219 | cFYI(1, ("Demultiplex PID: %d", current->pid)); | |
220 | write_lock(&GlobalSMBSeslock); | |
221 | atomic_inc(&tcpSesAllocCount); | |
222 | length = tcpSesAllocCount.counter; | |
223 | write_unlock(&GlobalSMBSeslock); | |
224 | if(length > 1) { | |
225 | mempool_resize(cifs_req_poolp, | |
226 | length + cifs_min_rcv, | |
227 | GFP_KERNEL); | |
228 | } | |
229 | ||
230 | while (server->tcpStatus != CifsExiting) { | |
b8643e1b SF |
231 | if (bigbuf == NULL) { |
232 | bigbuf = cifs_buf_get(); | |
233 | if(bigbuf == NULL) { | |
234 | cERROR(1,("No memory for large SMB response")); | |
235 | msleep(3000); | |
236 | /* retry will check if exiting */ | |
237 | continue; | |
238 | } | |
239 | } else if(isLargeBuf) { | |
240 | /* we are reusing a dirtry large buf, clear its start */ | |
241 | memset(bigbuf, 0, sizeof (struct smb_hdr)); | |
1da177e4 | 242 | } |
b8643e1b SF |
243 | |
244 | if (smallbuf == NULL) { | |
245 | smallbuf = cifs_small_buf_get(); | |
246 | if(smallbuf == NULL) { | |
247 | cERROR(1,("No memory for SMB response")); | |
248 | msleep(1000); | |
249 | /* retry will check if exiting */ | |
250 | continue; | |
251 | } | |
252 | /* beginning of smb buffer is cleared in our buf_get */ | |
253 | } else /* if existing small buf clear beginning */ | |
254 | memset(smallbuf, 0, sizeof (struct smb_hdr)); | |
255 | ||
256 | isLargeBuf = FALSE; | |
257 | smb_buffer = smallbuf; | |
1da177e4 LT |
258 | iov.iov_base = smb_buffer; |
259 | iov.iov_len = 4; | |
260 | smb_msg.msg_control = NULL; | |
261 | smb_msg.msg_controllen = 0; | |
262 | length = | |
263 | kernel_recvmsg(csocket, &smb_msg, | |
264 | &iov, 1, 4, 0 /* BB see socket.h flags */); | |
265 | ||
266 | if(server->tcpStatus == CifsExiting) { | |
267 | break; | |
268 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
269 | cFYI(1,("Reconnecting after server stopped responding")); | |
270 | cifs_reconnect(server); | |
271 | cFYI(1,("call to reconnect done")); | |
272 | csocket = server->ssocket; | |
273 | continue; | |
274 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 275 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
276 | allowing socket to clear and app threads to set |
277 | tcpStatus CifsNeedReconnect if server hung */ | |
278 | continue; | |
279 | } else if (length <= 0) { | |
280 | if(server->tcpStatus == CifsNew) { | |
281 | cFYI(1,("tcp session abended prematurely (after SMBnegprot)")); | |
09d1db5c SF |
282 | /* some servers kill the TCP session rather than |
283 | returning an SMB negprot error, in which | |
284 | case reconnecting here is not going to help, | |
285 | and so simply return error to mount */ | |
1da177e4 LT |
286 | break; |
287 | } | |
288 | if(length == -EINTR) { | |
289 | cFYI(1,("cifsd thread killed")); | |
290 | break; | |
291 | } | |
292 | cFYI(1,("Reconnecting after unexpected peek error %d",length)); | |
293 | cifs_reconnect(server); | |
294 | csocket = server->ssocket; | |
295 | wake_up(&server->response_q); | |
296 | continue; | |
46810cbf SF |
297 | } else if (length < 4) { |
298 | cFYI(1, | |
299 | ("Frame less than four bytes received %d bytes long.", | |
300 | length)); | |
301 | cifs_reconnect(server); | |
302 | csocket = server->ssocket; | |
303 | wake_up(&server->response_q); | |
304 | continue; | |
305 | } | |
1da177e4 | 306 | |
46810cbf SF |
307 | /* the right amount was read from socket - 4 bytes */ |
308 | ||
309 | pdu_length = ntohl(smb_buffer->smb_buf_length); | |
310 | cFYI(1,("rfc1002 length(big endian)0x%x)", pdu_length+4)); | |
311 | ||
312 | temp = (char *) smb_buffer; | |
313 | if (temp[0] == (char) RFC1002_SESSION_KEEP_ALIVE) { | |
314 | cFYI(0,("Received 4 byte keep alive packet")); | |
315 | } else if (temp[0] == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { | |
316 | cFYI(1,("Good RFC 1002 session rsp")); | |
317 | } else if (temp[0] == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { | |
318 | /* we get this from Windows 98 instead of | |
319 | an error on SMB negprot response */ | |
320 | cFYI(1,("Negative RFC 1002 Session Response Error 0x%x)",temp[4])); | |
321 | if(server->tcpStatus == CifsNew) { | |
322 | /* if nack on negprot (rather than | |
323 | ret of smb negprot error) reconnecting | |
324 | not going to help, ret error to mount */ | |
325 | break; | |
326 | } else { | |
327 | /* give server a second to | |
328 | clean up before reconnect attempt */ | |
329 | msleep(1000); | |
330 | /* always try 445 first on reconnect | |
331 | since we get NACK on some if we ever | |
332 | connected to port 139 (the NACK is | |
333 | since we do not begin with RFC1001 | |
334 | session initialize frame) */ | |
335 | server->addr.sockAddr.sin_port = | |
336 | htons(CIFS_PORT); | |
1da177e4 LT |
337 | cifs_reconnect(server); |
338 | csocket = server->ssocket; | |
46810cbf | 339 | wake_up(&server->response_q); |
1da177e4 | 340 | continue; |
46810cbf SF |
341 | } |
342 | } else if (temp[0] != (char) 0) { | |
343 | cERROR(1,("Unknown RFC 1002 frame")); | |
344 | cifs_dump_mem(" Received Data: ", temp, length); | |
345 | cifs_reconnect(server); | |
346 | csocket = server->ssocket; | |
347 | continue; | |
348 | } else { /* we have an SMB response */ | |
349 | if((pdu_length > CIFSMaxBufSize + | |
350 | MAX_CIFS_HDR_SIZE - 4) || | |
351 | (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) { | |
352 | cERROR(1, | |
353 | ("Invalid size SMB length %d and pdu_length %d", | |
354 | length, pdu_length+4)); | |
355 | cifs_reconnect(server); | |
356 | csocket = server->ssocket; | |
357 | wake_up(&server->response_q); | |
358 | continue; | |
359 | } else { /* length ok */ | |
360 | int reconnect = 0; | |
361 | ||
362 | if(pdu_length > MAX_CIFS_HDR_SIZE - 4) { | |
363 | isLargeBuf = TRUE; | |
364 | memcpy(bigbuf, smallbuf, 4); | |
365 | smb_buffer = bigbuf; | |
366 | } | |
367 | length = 0; | |
368 | iov.iov_base = 4 + (char *)smb_buffer; | |
369 | iov.iov_len = pdu_length; | |
370 | for (total_read = 0; | |
371 | total_read < pdu_length; | |
372 | total_read += length) { | |
373 | length = kernel_recvmsg(csocket, &smb_msg, | |
374 | &iov, 1, | |
375 | pdu_length - total_read, 0); | |
376 | if((server->tcpStatus == CifsExiting) || | |
377 | (length == -EINTR)) { | |
378 | /* then will exit */ | |
379 | reconnect = 2; | |
380 | break; | |
381 | } else if (server->tcpStatus == | |
382 | CifsNeedReconnect) { | |
383 | cifs_reconnect(server); | |
384 | csocket = server->ssocket; | |
385 | /* Reconnect wakes up rspns q */ | |
67010fbc | 386 | /* Now we will reread sock */ |
46810cbf SF |
387 | reconnect = 1; |
388 | break; | |
389 | } else if ((length == -ERESTARTSYS) || | |
390 | (length == -EAGAIN)) { | |
391 | msleep(1); /* minimum sleep to prevent looping | |
392 | allowing socket to clear and app threads to set | |
393 | tcpStatus CifsNeedReconnect if server hung */ | |
394 | continue; | |
395 | } else if (length <= 0) { | |
396 | cERROR(1,("Received no data, expecting %d", | |
397 | pdu_length - total_read)); | |
398 | cifs_reconnect(server); | |
399 | csocket = server->ssocket; | |
400 | reconnect = 1; | |
401 | break; | |
1da177e4 | 402 | } |
1da177e4 | 403 | } |
46810cbf SF |
404 | if(reconnect == 2) |
405 | break; | |
406 | else if(reconnect == 1) | |
407 | continue; | |
1da177e4 | 408 | |
46810cbf SF |
409 | length += 4; /* account for rfc1002 hdr */ |
410 | } | |
1da177e4 | 411 | |
46810cbf SF |
412 | dump_smb(smb_buffer, length); |
413 | if (checkSMB | |
414 | (smb_buffer, smb_buffer->Mid, total_read+4)) { | |
415 | cERROR(1, ("Bad SMB Received ")); | |
416 | continue; | |
417 | } | |
09d1db5c | 418 | |
1da177e4 | 419 | |
46810cbf SF |
420 | task_to_wake = NULL; |
421 | spin_lock(&GlobalMid_Lock); | |
422 | list_for_each(tmp, &server->pending_mid_q) { | |
423 | mid_entry = list_entry(tmp, struct mid_q_entry, | |
424 | qhead); | |
425 | ||
426 | if ((mid_entry->mid == smb_buffer->Mid) | |
427 | && (mid_entry->midState == | |
428 | MID_REQUEST_SUBMITTED) | |
429 | && (mid_entry->command == | |
430 | smb_buffer->Command)) { | |
431 | cFYI(1,("Found Mid 0x%x wake up" | |
432 | ,mid_entry->mid)); | |
433 | /* BB FIXME - missing code here BB */ | |
434 | /* check_2nd_t2(smb_buffer); */ | |
435 | task_to_wake = mid_entry->tsk; | |
436 | mid_entry->resp_buf = | |
437 | smb_buffer; | |
438 | mid_entry->midState = | |
439 | MID_RESPONSE_RECEIVED; | |
b8643e1b | 440 | if(isLargeBuf) |
46810cbf | 441 | mid_entry->largeBuf = 1; |
b8643e1b | 442 | else |
46810cbf | 443 | mid_entry->largeBuf = 0; |
1da177e4 LT |
444 | } |
445 | } | |
46810cbf SF |
446 | spin_unlock(&GlobalMid_Lock); |
447 | if (task_to_wake) { | |
448 | if(isLargeBuf) | |
449 | bigbuf = NULL; | |
450 | else | |
451 | smallbuf = NULL; | |
452 | smb_buffer = NULL; /* will be freed by users thread after he is done */ | |
453 | wake_up_process(task_to_wake); | |
454 | } else if (is_valid_oplock_break(smb_buffer) == FALSE) { | |
455 | cERROR(1, ("No task to wake, unknown frame rcvd!")); | |
456 | cifs_dump_mem("Received Data is: ",temp,sizeof(struct smb_hdr)); | |
457 | } | |
1da177e4 LT |
458 | } |
459 | } | |
460 | spin_lock(&GlobalMid_Lock); | |
461 | server->tcpStatus = CifsExiting; | |
462 | server->tsk = NULL; | |
463 | atomic_set(&server->inFlight, 0); | |
464 | spin_unlock(&GlobalMid_Lock); | |
465 | /* Although there should not be any requests blocked on | |
466 | this queue it can not hurt to be paranoid and try to wake up requests | |
09d1db5c | 467 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
468 | to the same server - they now will see the session is in exit state |
469 | and get out of SendReceive. */ | |
470 | wake_up_all(&server->request_q); | |
471 | /* give those requests time to exit */ | |
b8643e1b SF |
472 | msleep(125); |
473 | ||
1da177e4 LT |
474 | if(server->ssocket) { |
475 | sock_release(csocket); | |
476 | server->ssocket = NULL; | |
477 | } | |
b8643e1b SF |
478 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
479 | if (bigbuf != NULL) | |
480 | cifs_buf_release(bigbuf); | |
481 | if (smallbuf != NULL) | |
482 | cifs_small_buf_release(smallbuf); | |
1da177e4 LT |
483 | |
484 | read_lock(&GlobalSMBSeslock); | |
485 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
486 | /* loop through server session structures attached to this and |
487 | mark them dead */ | |
1da177e4 LT |
488 | list_for_each(tmp, &GlobalSMBSessionList) { |
489 | ses = | |
490 | list_entry(tmp, struct cifsSesInfo, | |
491 | cifsSessionList); | |
492 | if (ses->server == server) { | |
493 | ses->status = CifsExiting; | |
494 | ses->server = NULL; | |
495 | } | |
496 | } | |
497 | read_unlock(&GlobalSMBSeslock); | |
498 | } else { | |
499 | spin_lock(&GlobalMid_Lock); | |
500 | list_for_each(tmp, &server->pending_mid_q) { | |
501 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
502 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
503 | cFYI(1, | |
09d1db5c | 504 | ("Clearing Mid 0x%x - waking up ",mid_entry->mid)); |
1da177e4 LT |
505 | task_to_wake = mid_entry->tsk; |
506 | if(task_to_wake) { | |
507 | wake_up_process(task_to_wake); | |
508 | } | |
509 | } | |
510 | } | |
511 | spin_unlock(&GlobalMid_Lock); | |
512 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 513 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 514 | msleep(125); |
1da177e4 LT |
515 | } |
516 | ||
517 | if (list_empty(&server->pending_mid_q)) { | |
518 | /* mpx threads have not exited yet give them | |
519 | at least the smb send timeout time for long ops */ | |
520 | cFYI(1, ("Wait for exit from demultiplex thread")); | |
b8643e1b | 521 | msleep(46); |
1da177e4 LT |
522 | /* if threads still have not exited they are probably never |
523 | coming home not much else we can do but free the memory */ | |
524 | } | |
525 | kfree(server); | |
526 | ||
527 | write_lock(&GlobalSMBSeslock); | |
528 | atomic_dec(&tcpSesAllocCount); | |
529 | length = tcpSesAllocCount.counter; | |
530 | write_unlock(&GlobalSMBSeslock); | |
531 | if(length > 0) { | |
532 | mempool_resize(cifs_req_poolp, | |
533 | length + cifs_min_rcv, | |
534 | GFP_KERNEL); | |
535 | } | |
b8643e1b SF |
536 | |
537 | msleep(250); | |
1da177e4 LT |
538 | return 0; |
539 | } | |
540 | ||
1da177e4 LT |
541 | static int |
542 | cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) | |
543 | { | |
544 | char *value; | |
545 | char *data; | |
546 | unsigned int temp_len, i, j; | |
547 | char separator[2]; | |
548 | ||
549 | separator[0] = ','; | |
550 | separator[1] = 0; | |
551 | ||
552 | memset(vol->source_rfc1001_name,0x20,15); | |
553 | for(i=0;i < strnlen(system_utsname.nodename,15);i++) { | |
554 | /* does not have to be a perfect mapping since the field is | |
555 | informational, only used for servers that do not support | |
556 | port 445 and it can be overridden at mount time */ | |
09d1db5c SF |
557 | vol->source_rfc1001_name[i] = |
558 | toupper(system_utsname.nodename[i]); | |
1da177e4 LT |
559 | } |
560 | vol->source_rfc1001_name[15] = 0; | |
561 | ||
562 | vol->linux_uid = current->uid; /* current->euid instead? */ | |
563 | vol->linux_gid = current->gid; | |
564 | vol->dir_mode = S_IRWXUGO; | |
565 | /* 2767 perms indicate mandatory locking support */ | |
566 | vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); | |
567 | ||
568 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
569 | vol->rw = TRUE; | |
570 | ||
571 | if (!options) | |
572 | return 1; | |
573 | ||
574 | if(strncmp(options,"sep=",4) == 0) { | |
575 | if(options[4] != 0) { | |
576 | separator[0] = options[4]; | |
577 | options += 5; | |
578 | } else { | |
579 | cFYI(1,("Null separator not allowed")); | |
580 | } | |
581 | } | |
582 | ||
583 | while ((data = strsep(&options, separator)) != NULL) { | |
584 | if (!*data) | |
585 | continue; | |
586 | if ((value = strchr(data, '=')) != NULL) | |
587 | *value++ = '\0'; | |
588 | ||
589 | if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/ | |
590 | vol->no_xattr = 0; | |
591 | } else if (strnicmp(data, "nouser_xattr",12) == 0) { | |
592 | vol->no_xattr = 1; | |
593 | } else if (strnicmp(data, "user", 4) == 0) { | |
594 | if (!value || !*value) { | |
595 | printk(KERN_WARNING | |
596 | "CIFS: invalid or missing username\n"); | |
597 | return 1; /* needs_arg; */ | |
598 | } | |
599 | if (strnlen(value, 200) < 200) { | |
600 | vol->username = value; | |
601 | } else { | |
602 | printk(KERN_WARNING "CIFS: username too long\n"); | |
603 | return 1; | |
604 | } | |
605 | } else if (strnicmp(data, "pass", 4) == 0) { | |
606 | if (!value) { | |
607 | vol->password = NULL; | |
608 | continue; | |
609 | } else if(value[0] == 0) { | |
610 | /* check if string begins with double comma | |
611 | since that would mean the password really | |
612 | does start with a comma, and would not | |
613 | indicate an empty string */ | |
614 | if(value[1] != separator[0]) { | |
615 | vol->password = NULL; | |
616 | continue; | |
617 | } | |
618 | } | |
619 | temp_len = strlen(value); | |
620 | /* removed password length check, NTLM passwords | |
621 | can be arbitrarily long */ | |
622 | ||
623 | /* if comma in password, the string will be | |
624 | prematurely null terminated. Commas in password are | |
625 | specified across the cifs mount interface by a double | |
626 | comma ie ,, and a comma used as in other cases ie ',' | |
627 | as a parameter delimiter/separator is single and due | |
628 | to the strsep above is temporarily zeroed. */ | |
629 | ||
630 | /* NB: password legally can have multiple commas and | |
631 | the only illegal character in a password is null */ | |
632 | ||
09d1db5c SF |
633 | if ((value[temp_len] == 0) && |
634 | (value[temp_len+1] == separator[0])) { | |
1da177e4 LT |
635 | /* reinsert comma */ |
636 | value[temp_len] = separator[0]; | |
637 | temp_len+=2; /* move after the second comma */ | |
638 | while(value[temp_len] != 0) { | |
639 | if (value[temp_len] == separator[0]) { | |
09d1db5c SF |
640 | if (value[temp_len+1] == |
641 | separator[0]) { | |
642 | /* skip second comma */ | |
643 | temp_len++; | |
1da177e4 LT |
644 | } else { |
645 | /* single comma indicating start | |
646 | of next parm */ | |
647 | break; | |
648 | } | |
649 | } | |
650 | temp_len++; | |
651 | } | |
652 | if(value[temp_len] == 0) { | |
653 | options = NULL; | |
654 | } else { | |
655 | value[temp_len] = 0; | |
656 | /* point option to start of next parm */ | |
657 | options = value + temp_len + 1; | |
658 | } | |
659 | /* go from value to value + temp_len condensing | |
660 | double commas to singles. Note that this ends up | |
661 | allocating a few bytes too many, which is ok */ | |
433dc24f SF |
662 | vol->password = kcalloc(1, temp_len, GFP_KERNEL); |
663 | if(vol->password == NULL) { | |
664 | printk("CIFS: no memory for pass\n"); | |
665 | return 1; | |
666 | } | |
1da177e4 LT |
667 | for(i=0,j=0;i<temp_len;i++,j++) { |
668 | vol->password[j] = value[i]; | |
09d1db5c SF |
669 | if(value[i] == separator[0] |
670 | && value[i+1] == separator[0]) { | |
1da177e4 LT |
671 | /* skip second comma */ |
672 | i++; | |
673 | } | |
674 | } | |
675 | vol->password[j] = 0; | |
676 | } else { | |
09d1db5c | 677 | vol->password = kcalloc(1, temp_len+1, GFP_KERNEL); |
433dc24f SF |
678 | if(vol->password == NULL) { |
679 | printk("CIFS: no memory for pass\n"); | |
680 | return 1; | |
681 | } | |
1da177e4 LT |
682 | strcpy(vol->password, value); |
683 | } | |
684 | } else if (strnicmp(data, "ip", 2) == 0) { | |
685 | if (!value || !*value) { | |
686 | vol->UNCip = NULL; | |
687 | } else if (strnlen(value, 35) < 35) { | |
688 | vol->UNCip = value; | |
689 | } else { | |
690 | printk(KERN_WARNING "CIFS: ip address too long\n"); | |
691 | return 1; | |
692 | } | |
693 | } else if ((strnicmp(data, "unc", 3) == 0) | |
694 | || (strnicmp(data, "target", 6) == 0) | |
695 | || (strnicmp(data, "path", 4) == 0)) { | |
696 | if (!value || !*value) { | |
697 | printk(KERN_WARNING | |
698 | "CIFS: invalid path to network resource\n"); | |
699 | return 1; /* needs_arg; */ | |
700 | } | |
701 | if ((temp_len = strnlen(value, 300)) < 300) { | |
702 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
703 | if(vol->UNC == NULL) | |
704 | return 1; | |
705 | strcpy(vol->UNC,value); | |
706 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
707 | vol->UNC[0] = '\\'; | |
708 | vol->UNC[1] = '\\'; | |
709 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
710 | printk(KERN_WARNING | |
711 | "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
712 | return 1; | |
713 | } | |
714 | } else { | |
715 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
716 | return 1; | |
717 | } | |
718 | } else if ((strnicmp(data, "domain", 3) == 0) | |
719 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
720 | if (!value || !*value) { | |
721 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
722 | return 1; /* needs_arg; */ | |
723 | } | |
724 | /* BB are there cases in which a comma can be valid in | |
725 | a domain name and need special handling? */ | |
726 | if (strnlen(value, 65) < 65) { | |
727 | vol->domainname = value; | |
728 | cFYI(1, ("Domain name set")); | |
729 | } else { | |
730 | printk(KERN_WARNING "CIFS: domain name too long\n"); | |
731 | return 1; | |
732 | } | |
733 | } else if (strnicmp(data, "iocharset", 9) == 0) { | |
734 | if (!value || !*value) { | |
735 | printk(KERN_WARNING "CIFS: invalid iocharset specified\n"); | |
736 | return 1; /* needs_arg; */ | |
737 | } | |
738 | if (strnlen(value, 65) < 65) { | |
739 | if(strnicmp(value,"default",7)) | |
740 | vol->iocharset = value; | |
741 | /* if iocharset not set load_nls_default used by caller */ | |
742 | cFYI(1, ("iocharset set to %s",value)); | |
743 | } else { | |
744 | printk(KERN_WARNING "CIFS: iocharset name too long.\n"); | |
745 | return 1; | |
746 | } | |
747 | } else if (strnicmp(data, "uid", 3) == 0) { | |
748 | if (value && *value) { | |
749 | vol->linux_uid = | |
750 | simple_strtoul(value, &value, 0); | |
751 | } | |
752 | } else if (strnicmp(data, "gid", 3) == 0) { | |
753 | if (value && *value) { | |
754 | vol->linux_gid = | |
755 | simple_strtoul(value, &value, 0); | |
756 | } | |
757 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
758 | if (value && *value) { | |
759 | vol->file_mode = | |
760 | simple_strtoul(value, &value, 0); | |
761 | } | |
762 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
763 | if (value && *value) { | |
764 | vol->dir_mode = | |
765 | simple_strtoul(value, &value, 0); | |
766 | } | |
767 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
768 | if (value && *value) { | |
769 | vol->dir_mode = | |
770 | simple_strtoul(value, &value, 0); | |
771 | } | |
772 | } else if (strnicmp(data, "port", 4) == 0) { | |
773 | if (value && *value) { | |
774 | vol->port = | |
775 | simple_strtoul(value, &value, 0); | |
776 | } | |
777 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
778 | if (value && *value) { | |
779 | vol->rsize = | |
780 | simple_strtoul(value, &value, 0); | |
781 | } | |
782 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
783 | if (value && *value) { | |
784 | vol->wsize = | |
785 | simple_strtoul(value, &value, 0); | |
786 | } | |
787 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
788 | if (value && *value) { | |
789 | vol->sockopt = | |
790 | simple_strtoul(value, &value, 0); | |
791 | } | |
792 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
793 | if (!value || !*value || (*value == ' ')) { | |
794 | cFYI(1,("invalid (empty) netbiosname specified")); | |
795 | } else { | |
796 | memset(vol->source_rfc1001_name,0x20,15); | |
797 | for(i=0;i<15;i++) { | |
798 | /* BB are there cases in which a comma can be | |
799 | valid in this workstation netbios name (and need | |
800 | special handling)? */ | |
801 | ||
802 | /* We do not uppercase netbiosname for user */ | |
803 | if (value[i]==0) | |
804 | break; | |
805 | else | |
806 | vol->source_rfc1001_name[i] = value[i]; | |
807 | } | |
808 | /* The string has 16th byte zero still from | |
809 | set at top of the function */ | |
810 | if((i==15) && (value[i] != 0)) | |
811 | printk(KERN_WARNING "CIFS: netbiosname longer than 15 and was truncated.\n"); | |
812 | } | |
813 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
814 | /* ignore */ | |
815 | } else if (strnicmp(data, "version", 3) == 0) { | |
816 | /* ignore */ | |
817 | } else if (strnicmp(data, "guest",5) == 0) { | |
818 | /* ignore */ | |
819 | } else if (strnicmp(data, "rw", 2) == 0) { | |
820 | vol->rw = TRUE; | |
821 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
822 | (strnicmp(data, "nosuid", 6) == 0) || | |
823 | (strnicmp(data, "exec", 4) == 0) || | |
824 | (strnicmp(data, "noexec", 6) == 0) || | |
825 | (strnicmp(data, "nodev", 5) == 0) || | |
826 | (strnicmp(data, "noauto", 6) == 0) || | |
827 | (strnicmp(data, "dev", 3) == 0)) { | |
828 | /* The mount tool or mount.cifs helper (if present) | |
829 | uses these opts to set flags, and the flags are read | |
830 | by the kernel vfs layer before we get here (ie | |
831 | before read super) so there is no point trying to | |
832 | parse these options again and set anything and it | |
833 | is ok to just ignore them */ | |
834 | continue; | |
835 | } else if (strnicmp(data, "ro", 2) == 0) { | |
836 | vol->rw = FALSE; | |
837 | } else if (strnicmp(data, "hard", 4) == 0) { | |
838 | vol->retry = 1; | |
839 | } else if (strnicmp(data, "soft", 4) == 0) { | |
840 | vol->retry = 0; | |
841 | } else if (strnicmp(data, "perm", 4) == 0) { | |
842 | vol->noperm = 0; | |
843 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
844 | vol->noperm = 1; | |
6a0b4824 SF |
845 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
846 | vol->remap = 1; | |
847 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
848 | vol->remap = 0; | |
1da177e4 LT |
849 | } else if (strnicmp(data, "setuids", 7) == 0) { |
850 | vol->setuids = 1; | |
851 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
852 | vol->setuids = 0; | |
853 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
854 | vol->retry = 0; | |
855 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
856 | vol->retry = 1; | |
857 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
858 | vol->intr = 0; | |
859 | } else if (strnicmp(data, "intr", 4) == 0) { | |
860 | vol->intr = 1; | |
861 | } else if (strnicmp(data, "serverino",7) == 0) { | |
862 | vol->server_ino = 1; | |
863 | } else if (strnicmp(data, "noserverino",9) == 0) { | |
864 | vol->server_ino = 0; | |
865 | } else if (strnicmp(data, "acl",3) == 0) { | |
866 | vol->no_psx_acl = 0; | |
867 | } else if (strnicmp(data, "noacl",5) == 0) { | |
868 | vol->no_psx_acl = 1; | |
869 | } else if (strnicmp(data, "direct",6) == 0) { | |
870 | vol->direct_io = 1; | |
871 | } else if (strnicmp(data, "forcedirectio",13) == 0) { | |
872 | vol->direct_io = 1; | |
873 | } else if (strnicmp(data, "in6_addr",8) == 0) { | |
874 | if (!value || !*value) { | |
875 | vol->in6_addr = NULL; | |
876 | } else if (strnlen(value, 49) == 48) { | |
877 | vol->in6_addr = value; | |
878 | } else { | |
879 | printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n"); | |
880 | return 1; | |
881 | } | |
882 | } else if (strnicmp(data, "noac", 4) == 0) { | |
883 | printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
884 | } else | |
885 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data); | |
886 | } | |
887 | if (vol->UNC == NULL) { | |
888 | if(devname == NULL) { | |
889 | printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n"); | |
890 | return 1; | |
891 | } | |
892 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
893 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
894 | if(vol->UNC == NULL) | |
895 | return 1; | |
896 | strcpy(vol->UNC,devname); | |
897 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
898 | vol->UNC[0] = '\\'; | |
899 | vol->UNC[1] = '\\'; | |
900 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
901 | printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
902 | return 1; | |
903 | } | |
904 | } else { | |
905 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
906 | return 1; | |
907 | } | |
908 | } | |
909 | if(vol->UNCip == NULL) | |
910 | vol->UNCip = &vol->UNC[2]; | |
911 | ||
912 | return 0; | |
913 | } | |
914 | ||
915 | static struct cifsSesInfo * | |
916 | cifs_find_tcp_session(struct in_addr * target_ip_addr, | |
917 | struct in6_addr *target_ip6_addr, | |
918 | char *userName, struct TCP_Server_Info **psrvTcp) | |
919 | { | |
920 | struct list_head *tmp; | |
921 | struct cifsSesInfo *ses; | |
922 | *psrvTcp = NULL; | |
923 | read_lock(&GlobalSMBSeslock); | |
924 | ||
925 | list_for_each(tmp, &GlobalSMBSessionList) { | |
926 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
927 | if (ses->server) { | |
928 | if((target_ip_addr && | |
929 | (ses->server->addr.sockAddr.sin_addr.s_addr | |
930 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
931 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
932 | target_ip6_addr,sizeof(*target_ip6_addr)))){ | |
933 | /* BB lock server and tcp session and increment use count here?? */ | |
934 | *psrvTcp = ses->server; /* found a match on the TCP session */ | |
935 | /* BB check if reconnection needed */ | |
936 | if (strncmp | |
937 | (ses->userName, userName, | |
938 | MAX_USERNAME_SIZE) == 0){ | |
939 | read_unlock(&GlobalSMBSeslock); | |
940 | return ses; /* found exact match on both tcp and SMB sessions */ | |
941 | } | |
942 | } | |
943 | } | |
944 | /* else tcp and smb sessions need reconnection */ | |
945 | } | |
946 | read_unlock(&GlobalSMBSeslock); | |
947 | return NULL; | |
948 | } | |
949 | ||
950 | static struct cifsTconInfo * | |
951 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
952 | { | |
953 | struct list_head *tmp; | |
954 | struct cifsTconInfo *tcon; | |
955 | ||
956 | read_lock(&GlobalSMBSeslock); | |
957 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
958 | cFYI(1, ("Next tcon - ")); | |
959 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
960 | if (tcon->ses) { | |
961 | if (tcon->ses->server) { | |
962 | cFYI(1, | |
963 | (" old ip addr: %x == new ip %x ?", | |
964 | tcon->ses->server->addr.sockAddr.sin_addr. | |
965 | s_addr, new_target_ip_addr)); | |
966 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
967 | s_addr == new_target_ip_addr) { | |
968 | /* BB lock tcon and server and tcp session and increment use count here? */ | |
969 | /* found a match on the TCP session */ | |
970 | /* BB check if reconnection needed */ | |
971 | cFYI(1,("Matched ip, old UNC: %s == new: %s ?", | |
972 | tcon->treeName, uncName)); | |
973 | if (strncmp | |
974 | (tcon->treeName, uncName, | |
975 | MAX_TREE_SIZE) == 0) { | |
976 | cFYI(1, | |
977 | ("Matched UNC, old user: %s == new: %s ?", | |
978 | tcon->treeName, uncName)); | |
979 | if (strncmp | |
980 | (tcon->ses->userName, | |
981 | userName, | |
982 | MAX_USERNAME_SIZE) == 0) { | |
983 | read_unlock(&GlobalSMBSeslock); | |
984 | return tcon;/* also matched user (smb session)*/ | |
985 | } | |
986 | } | |
987 | } | |
988 | } | |
989 | } | |
990 | } | |
991 | read_unlock(&GlobalSMBSeslock); | |
992 | return NULL; | |
993 | } | |
994 | ||
995 | int | |
996 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
997 | const char *old_path, const struct nls_table *nls_codepage, |
998 | int remap) | |
1da177e4 LT |
999 | { |
1000 | unsigned char *referrals = NULL; | |
1001 | unsigned int num_referrals; | |
1002 | int rc = 0; | |
1003 | ||
1004 | rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage, | |
737b758c | 1005 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1006 | |
1007 | /* BB Add in code to: if valid refrl, if not ip address contact | |
1008 | the helper that resolves tcp names, mount to it, try to | |
1009 | tcon to it unmount it if fail */ | |
1010 | ||
1011 | if(referrals) | |
1012 | kfree(referrals); | |
1013 | ||
1014 | return rc; | |
1015 | } | |
1016 | ||
1017 | int | |
1018 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
1019 | const char *old_path, const struct nls_table *nls_codepage, | |
737b758c SF |
1020 | unsigned int *pnum_referrals, |
1021 | unsigned char ** preferrals, int remap) | |
1da177e4 LT |
1022 | { |
1023 | char *temp_unc; | |
1024 | int rc = 0; | |
1025 | ||
1026 | *pnum_referrals = 0; | |
1027 | ||
1028 | if (pSesInfo->ipc_tid == 0) { | |
1029 | temp_unc = kmalloc(2 /* for slashes */ + | |
1030 | strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2) | |
1031 | + 1 + 4 /* slash IPC$ */ + 2, | |
1032 | GFP_KERNEL); | |
1033 | if (temp_unc == NULL) | |
1034 | return -ENOMEM; | |
1035 | temp_unc[0] = '\\'; | |
1036 | temp_unc[1] = '\\'; | |
1037 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1038 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1039 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1040 | cFYI(1, | |
1041 | ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid)); | |
1042 | kfree(temp_unc); | |
1043 | } | |
1044 | if (rc == 0) | |
1045 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1046 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1047 | |
1048 | return rc; | |
1049 | } | |
1050 | ||
1051 | /* See RFC1001 section 14 on representation of Netbios names */ | |
1052 | static void rfc1002mangle(char * target,char * source, unsigned int length) | |
1053 | { | |
1054 | unsigned int i,j; | |
1055 | ||
1056 | for(i=0,j=0;i<(length);i++) { | |
1057 | /* mask a nibble at a time and encode */ | |
1058 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1059 | target[j+1] = 'A' + (0x0F & source[i]); | |
1060 | j+=2; | |
1061 | } | |
1062 | ||
1063 | } | |
1064 | ||
1065 | ||
1066 | static int | |
1067 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, | |
1068 | char * netbios_name) | |
1069 | { | |
1070 | int rc = 0; | |
1071 | int connected = 0; | |
1072 | __be16 orig_port = 0; | |
1073 | ||
1074 | if(*csocket == NULL) { | |
1075 | rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1076 | if (rc < 0) { | |
1077 | cERROR(1, ("Error %d creating socket",rc)); | |
1078 | *csocket = NULL; | |
1079 | return rc; | |
1080 | } else { | |
1081 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1082 | cFYI(1,("Socket created")); | |
1083 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | psin_server->sin_family = AF_INET; | |
1088 | if(psin_server->sin_port) { /* user overrode default port */ | |
1089 | rc = (*csocket)->ops->connect(*csocket, | |
1090 | (struct sockaddr *) psin_server, | |
1091 | sizeof (struct sockaddr_in),0); | |
1092 | if (rc >= 0) | |
1093 | connected = 1; | |
1094 | } | |
1095 | ||
1096 | if(!connected) { | |
1097 | /* save original port so we can retry user specified port | |
1098 | later if fall back ports fail this time */ | |
1099 | orig_port = psin_server->sin_port; | |
1100 | ||
1101 | /* do not retry on the same port we just failed on */ | |
1102 | if(psin_server->sin_port != htons(CIFS_PORT)) { | |
1103 | psin_server->sin_port = htons(CIFS_PORT); | |
1104 | ||
1105 | rc = (*csocket)->ops->connect(*csocket, | |
1106 | (struct sockaddr *) psin_server, | |
1107 | sizeof (struct sockaddr_in),0); | |
1108 | if (rc >= 0) | |
1109 | connected = 1; | |
1110 | } | |
1111 | } | |
1112 | if (!connected) { | |
1113 | psin_server->sin_port = htons(RFC1001_PORT); | |
1114 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1115 | psin_server, sizeof (struct sockaddr_in),0); | |
1116 | if (rc >= 0) | |
1117 | connected = 1; | |
1118 | } | |
1119 | ||
1120 | /* give up here - unless we want to retry on different | |
1121 | protocol families some day */ | |
1122 | if (!connected) { | |
1123 | if(orig_port) | |
1124 | psin_server->sin_port = orig_port; | |
1125 | cFYI(1,("Error %d connecting to server via ipv4",rc)); | |
1126 | sock_release(*csocket); | |
1127 | *csocket = NULL; | |
1128 | return rc; | |
1129 | } | |
1130 | /* Eventually check for other socket options to change from | |
1131 | the default. sock_setsockopt not used because it expects | |
1132 | user space buffer */ | |
1133 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1134 | ||
1135 | /* send RFC1001 sessinit */ | |
1136 | ||
1137 | if(psin_server->sin_port == htons(RFC1001_PORT)) { | |
1138 | /* some servers require RFC1001 sessinit before sending | |
1139 | negprot - BB check reconnection in case where second | |
1140 | sessinit is sent but no second negprot */ | |
1141 | struct rfc1002_session_packet * ses_init_buf; | |
1142 | struct smb_hdr * smb_buf; | |
433dc24f | 1143 | ses_init_buf = kcalloc(1, sizeof(struct rfc1002_session_packet), GFP_KERNEL); |
1da177e4 LT |
1144 | if(ses_init_buf) { |
1145 | ses_init_buf->trailer.session_req.called_len = 32; | |
1146 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1147 | DEFAULT_CIFS_CALLED_NAME,16); | |
1148 | ses_init_buf->trailer.session_req.calling_len = 32; | |
1149 | /* calling name ends in null (byte 16) from old smb | |
1150 | convention. */ | |
1151 | if(netbios_name && (netbios_name[0] !=0)) { | |
1152 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1153 | netbios_name,16); | |
1154 | } else { | |
1155 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1156 | "LINUX_CIFS_CLNT",16); | |
1157 | } | |
1158 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1159 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1160 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1161 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1162 | smb_buf->smb_buf_length = 0x81000044; | |
1163 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1164 | (struct sockaddr *)psin_server); | |
1165 | kfree(ses_init_buf); | |
1166 | } | |
1167 | /* else the negprot may still work without this | |
1168 | even though malloc failed */ | |
1169 | ||
1170 | } | |
1171 | ||
1172 | return rc; | |
1173 | } | |
1174 | ||
1175 | static int | |
1176 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1177 | { | |
1178 | int rc = 0; | |
1179 | int connected = 0; | |
1180 | __be16 orig_port = 0; | |
1181 | ||
1182 | if(*csocket == NULL) { | |
1183 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1184 | if (rc < 0) { | |
1185 | cERROR(1, ("Error %d creating ipv6 socket",rc)); | |
1186 | *csocket = NULL; | |
1187 | return rc; | |
1188 | } else { | |
1189 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1190 | cFYI(1,("ipv6 Socket created")); | |
1191 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1192 | } | |
1193 | } | |
1194 | ||
1195 | psin_server->sin6_family = AF_INET6; | |
1196 | ||
1197 | if(psin_server->sin6_port) { /* user overrode default port */ | |
1198 | rc = (*csocket)->ops->connect(*csocket, | |
1199 | (struct sockaddr *) psin_server, | |
1200 | sizeof (struct sockaddr_in6),0); | |
1201 | if (rc >= 0) | |
1202 | connected = 1; | |
1203 | } | |
1204 | ||
1205 | if(!connected) { | |
1206 | /* save original port so we can retry user specified port | |
1207 | later if fall back ports fail this time */ | |
1208 | ||
1209 | orig_port = psin_server->sin6_port; | |
1210 | /* do not retry on the same port we just failed on */ | |
1211 | if(psin_server->sin6_port != htons(CIFS_PORT)) { | |
1212 | psin_server->sin6_port = htons(CIFS_PORT); | |
1213 | ||
1214 | rc = (*csocket)->ops->connect(*csocket, | |
1215 | (struct sockaddr *) psin_server, | |
1216 | sizeof (struct sockaddr_in6),0); | |
1217 | if (rc >= 0) | |
1218 | connected = 1; | |
1219 | } | |
1220 | } | |
1221 | if (!connected) { | |
1222 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1223 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1224 | psin_server, sizeof (struct sockaddr_in6),0); | |
1225 | if (rc >= 0) | |
1226 | connected = 1; | |
1227 | } | |
1228 | ||
1229 | /* give up here - unless we want to retry on different | |
1230 | protocol families some day */ | |
1231 | if (!connected) { | |
1232 | if(orig_port) | |
1233 | psin_server->sin6_port = orig_port; | |
1234 | cFYI(1,("Error %d connecting to server via ipv6",rc)); | |
1235 | sock_release(*csocket); | |
1236 | *csocket = NULL; | |
1237 | return rc; | |
1238 | } | |
1239 | /* Eventually check for other socket options to change from | |
1240 | the default. sock_setsockopt not used because it expects | |
1241 | user space buffer */ | |
1242 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1243 | ||
1244 | return rc; | |
1245 | } | |
1246 | ||
1247 | int | |
1248 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1249 | char *mount_data, const char *devname) | |
1250 | { | |
1251 | int rc = 0; | |
1252 | int xid; | |
1253 | int address_type = AF_INET; | |
1254 | struct socket *csocket = NULL; | |
1255 | struct sockaddr_in sin_server; | |
1256 | struct sockaddr_in6 sin_server6; | |
1257 | struct smb_vol volume_info; | |
1258 | struct cifsSesInfo *pSesInfo = NULL; | |
1259 | struct cifsSesInfo *existingCifsSes = NULL; | |
1260 | struct cifsTconInfo *tcon = NULL; | |
1261 | struct TCP_Server_Info *srvTcp = NULL; | |
1262 | ||
1263 | xid = GetXid(); | |
1264 | ||
1265 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
1266 | ||
1267 | memset(&volume_info,0,sizeof(struct smb_vol)); | |
1268 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { | |
1269 | if(volume_info.UNC) | |
1270 | kfree(volume_info.UNC); | |
1271 | if(volume_info.password) | |
1272 | kfree(volume_info.password); | |
1273 | FreeXid(xid); | |
1274 | return -EINVAL; | |
1275 | } | |
1276 | ||
1277 | if (volume_info.username) { | |
1278 | /* BB fixme parse for domain name here */ | |
1279 | cFYI(1, ("Username: %s ", volume_info.username)); | |
1280 | ||
1281 | } else { | |
1282 | cifserror("No username specified "); | |
1283 | /* In userspace mount helper we can get user name from alternate | |
1284 | locations such as env variables and files on disk */ | |
1285 | if(volume_info.UNC) | |
1286 | kfree(volume_info.UNC); | |
1287 | if(volume_info.password) | |
1288 | kfree(volume_info.password); | |
1289 | FreeXid(xid); | |
1290 | return -EINVAL; | |
1291 | } | |
1292 | ||
1293 | if (volume_info.UNCip && volume_info.UNC) { | |
1294 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr); | |
1295 | ||
1296 | if(rc <= 0) { | |
1297 | /* not ipv4 address, try ipv6 */ | |
1298 | rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u); | |
1299 | if(rc > 0) | |
1300 | address_type = AF_INET6; | |
1301 | } else { | |
1302 | address_type = AF_INET; | |
1303 | } | |
1304 | ||
1305 | if(rc <= 0) { | |
1306 | /* we failed translating address */ | |
1307 | if(volume_info.UNC) | |
1308 | kfree(volume_info.UNC); | |
1309 | if(volume_info.password) | |
1310 | kfree(volume_info.password); | |
1311 | FreeXid(xid); | |
1312 | return -EINVAL; | |
1313 | } | |
1314 | ||
1315 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1316 | /* success */ | |
1317 | rc = 0; | |
1318 | } else if (volume_info.UNCip){ | |
1319 | /* BB using ip addr as server name connect to the DFS root below */ | |
1320 | cERROR(1,("Connecting to DFS root not implemented yet")); | |
1321 | if(volume_info.UNC) | |
1322 | kfree(volume_info.UNC); | |
1323 | if(volume_info.password) | |
1324 | kfree(volume_info.password); | |
1325 | FreeXid(xid); | |
1326 | return -EINVAL; | |
1327 | } else /* which servers DFS root would we conect to */ { | |
1328 | cERROR(1, | |
1329 | ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified ")); | |
1330 | if(volume_info.UNC) | |
1331 | kfree(volume_info.UNC); | |
1332 | if(volume_info.password) | |
1333 | kfree(volume_info.password); | |
1334 | FreeXid(xid); | |
1335 | return -EINVAL; | |
1336 | } | |
1337 | ||
1338 | /* this is needed for ASCII cp to Unicode converts */ | |
1339 | if(volume_info.iocharset == NULL) { | |
1340 | cifs_sb->local_nls = load_nls_default(); | |
1341 | /* load_nls_default can not return null */ | |
1342 | } else { | |
1343 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
1344 | if(cifs_sb->local_nls == NULL) { | |
1345 | cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset)); | |
1346 | if(volume_info.UNC) | |
1347 | kfree(volume_info.UNC); | |
1348 | if(volume_info.password) | |
1349 | kfree(volume_info.password); | |
1350 | FreeXid(xid); | |
1351 | return -ELIBACC; | |
1352 | } | |
1353 | } | |
1354 | ||
1355 | if(address_type == AF_INET) | |
1356 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, | |
1357 | NULL /* no ipv6 addr */, | |
1358 | volume_info.username, &srvTcp); | |
1359 | else if(address_type == AF_INET6) | |
1360 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, | |
1361 | &sin_server6.sin6_addr, | |
1362 | volume_info.username, &srvTcp); | |
1363 | else { | |
1364 | if(volume_info.UNC) | |
1365 | kfree(volume_info.UNC); | |
1366 | if(volume_info.password) | |
1367 | kfree(volume_info.password); | |
1368 | FreeXid(xid); | |
1369 | return -EINVAL; | |
1370 | } | |
1371 | ||
1372 | ||
1373 | if (srvTcp) { | |
1374 | cFYI(1, ("Existing tcp session with server found ")); | |
1375 | } else { /* create socket */ | |
1376 | if(volume_info.port) | |
1377 | sin_server.sin_port = htons(volume_info.port); | |
1378 | else | |
1379 | sin_server.sin_port = 0; | |
1380 | rc = ipv4_connect(&sin_server,&csocket,volume_info.source_rfc1001_name); | |
1381 | if (rc < 0) { | |
1382 | cERROR(1, | |
1383 | ("Error connecting to IPv4 socket. Aborting operation")); | |
1384 | if(csocket != NULL) | |
1385 | sock_release(csocket); | |
1386 | if(volume_info.UNC) | |
1387 | kfree(volume_info.UNC); | |
1388 | if(volume_info.password) | |
1389 | kfree(volume_info.password); | |
1390 | FreeXid(xid); | |
1391 | return rc; | |
1392 | } | |
1393 | ||
1394 | srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); | |
1395 | if (srvTcp == NULL) { | |
1396 | rc = -ENOMEM; | |
1397 | sock_release(csocket); | |
1398 | if(volume_info.UNC) | |
1399 | kfree(volume_info.UNC); | |
1400 | if(volume_info.password) | |
1401 | kfree(volume_info.password); | |
1402 | FreeXid(xid); | |
1403 | return rc; | |
1404 | } else { | |
1405 | memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); | |
1406 | memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in)); | |
1407 | atomic_set(&srvTcp->inFlight,0); | |
1408 | /* BB Add code for ipv6 case too */ | |
1409 | srvTcp->ssocket = csocket; | |
1410 | srvTcp->protocolType = IPV4; | |
1411 | init_waitqueue_head(&srvTcp->response_q); | |
1412 | init_waitqueue_head(&srvTcp->request_q); | |
1413 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1414 | /* at this point we are the only ones with the pointer | |
1415 | to the struct since the kernel thread not created yet | |
1416 | so no need to spinlock this init of tcpStatus */ | |
1417 | srvTcp->tcpStatus = CifsNew; | |
1418 | init_MUTEX(&srvTcp->tcpSem); | |
1419 | rc = (int)kernel_thread((void *)(void *)cifs_demultiplex_thread, srvTcp, | |
1420 | CLONE_FS | CLONE_FILES | CLONE_VM); | |
1421 | if(rc < 0) { | |
1422 | rc = -ENOMEM; | |
1423 | sock_release(csocket); | |
1424 | if(volume_info.UNC) | |
1425 | kfree(volume_info.UNC); | |
1426 | if(volume_info.password) | |
1427 | kfree(volume_info.password); | |
1428 | FreeXid(xid); | |
1429 | return rc; | |
1430 | } else | |
1431 | rc = 0; | |
1432 | memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); | |
ad009ac9 | 1433 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1434 | } |
1435 | } | |
1436 | ||
1437 | if (existingCifsSes) { | |
1438 | pSesInfo = existingCifsSes; | |
1439 | cFYI(1, ("Existing smb sess found ")); | |
1440 | if(volume_info.password) | |
1441 | kfree(volume_info.password); | |
1442 | /* volume_info.UNC freed at end of function */ | |
1443 | } else if (!rc) { | |
1444 | cFYI(1, ("Existing smb sess not found ")); | |
1445 | pSesInfo = sesInfoAlloc(); | |
1446 | if (pSesInfo == NULL) | |
1447 | rc = -ENOMEM; | |
1448 | else { | |
1449 | pSesInfo->server = srvTcp; | |
1450 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1451 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1452 | } | |
1453 | ||
1454 | if (!rc){ | |
1455 | /* volume_info.password freed at unmount */ | |
1456 | if (volume_info.password) | |
1457 | pSesInfo->password = volume_info.password; | |
1458 | if (volume_info.username) | |
1459 | strncpy(pSesInfo->userName, | |
1460 | volume_info.username,MAX_USERNAME_SIZE); | |
1461 | if (volume_info.domainname) | |
1462 | strncpy(pSesInfo->domainName, | |
1463 | volume_info.domainname,MAX_USERNAME_SIZE); | |
1464 | pSesInfo->linux_uid = volume_info.linux_uid; | |
1465 | down(&pSesInfo->sesSem); | |
1466 | rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls); | |
1467 | up(&pSesInfo->sesSem); | |
1468 | if(!rc) | |
1469 | atomic_inc(&srvTcp->socketUseCount); | |
1470 | } else | |
1471 | if(volume_info.password) | |
1472 | kfree(volume_info.password); | |
1473 | } | |
1474 | ||
1475 | /* search for existing tcon to this server share */ | |
1476 | if (!rc) { | |
1477 | if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize)) | |
1478 | cifs_sb->rsize = volume_info.rsize; | |
1479 | else | |
1480 | cifs_sb->rsize = srvTcp->maxBuf - MAX_CIFS_HDR_SIZE; /* default */ | |
1481 | if((volume_info.wsize) && (volume_info.wsize <= CIFSMaxBufSize)) | |
1482 | cifs_sb->wsize = volume_info.wsize; | |
1483 | else | |
1484 | cifs_sb->wsize = CIFSMaxBufSize; /* default */ | |
1485 | if(cifs_sb->rsize < PAGE_CACHE_SIZE) { | |
1486 | cifs_sb->rsize = PAGE_CACHE_SIZE; | |
1487 | cERROR(1,("Attempt to set readsize for mount to less than one page (4096)")); | |
1488 | } | |
1489 | cifs_sb->mnt_uid = volume_info.linux_uid; | |
1490 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
1491 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
1492 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
1493 | cFYI(1,("file mode: 0x%x dir mode: 0x%x",cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode)); | |
1494 | ||
1495 | if(volume_info.noperm) | |
1496 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
1497 | if(volume_info.setuids) | |
1498 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
1499 | if(volume_info.server_ino) | |
1500 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
6a0b4824 SF |
1501 | if(volume_info.remap) |
1502 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
1da177e4 LT |
1503 | if(volume_info.no_xattr) |
1504 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
1505 | if(volume_info.direct_io) { | |
1506 | cERROR(1,("mounting share using direct i/o")); | |
1507 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; | |
1508 | } | |
1509 | ||
1510 | tcon = | |
1511 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
1512 | volume_info.username); | |
1513 | if (tcon) { | |
1514 | cFYI(1, ("Found match on UNC path ")); | |
1515 | /* we can have only one retry value for a connection | |
1516 | to a share so for resources mounted more than once | |
1517 | to the same server share the last value passed in | |
1518 | for the retry flag is used */ | |
1519 | tcon->retry = volume_info.retry; | |
1520 | } else { | |
1521 | tcon = tconInfoAlloc(); | |
1522 | if (tcon == NULL) | |
1523 | rc = -ENOMEM; | |
1524 | else { | |
1525 | /* check for null share name ie connect to dfs root */ | |
1526 | ||
1527 | /* BB check if this works for exactly length three strings */ | |
1528 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) | |
1529 | && (strchr(volume_info.UNC + 3, '/') == | |
1530 | NULL)) { | |
737b758c SF |
1531 | rc = connect_to_dfs_path(xid, pSesInfo, |
1532 | "", cifs_sb->local_nls, | |
1533 | cifs_sb->mnt_cifs_flags & | |
1534 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
1535 | if(volume_info.UNC) |
1536 | kfree(volume_info.UNC); | |
1537 | FreeXid(xid); | |
1538 | return -ENODEV; | |
1539 | } else { | |
1540 | rc = CIFSTCon(xid, pSesInfo, | |
1541 | volume_info.UNC, | |
1542 | tcon, cifs_sb->local_nls); | |
1543 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
1544 | } | |
1545 | if (!rc) { | |
1546 | atomic_inc(&pSesInfo->inUse); | |
1547 | tcon->retry = volume_info.retry; | |
1548 | } | |
1549 | } | |
1550 | } | |
1551 | } | |
1552 | if(pSesInfo) { | |
1553 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { | |
1554 | sb->s_maxbytes = (u64) 1 << 63; | |
1555 | } else | |
1556 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
1557 | } | |
1558 | ||
1559 | sb->s_time_gran = 100; | |
1560 | ||
1561 | /* on error free sesinfo and tcon struct if needed */ | |
1562 | if (rc) { | |
1563 | /* if session setup failed, use count is zero but | |
1564 | we still need to free cifsd thread */ | |
1565 | if(atomic_read(&srvTcp->socketUseCount) == 0) { | |
1566 | spin_lock(&GlobalMid_Lock); | |
1567 | srvTcp->tcpStatus = CifsExiting; | |
1568 | spin_unlock(&GlobalMid_Lock); | |
1569 | if(srvTcp->tsk) | |
1570 | send_sig(SIGKILL,srvTcp->tsk,1); | |
1571 | } | |
1572 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
1573 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
1574 | tconInfoFree(tcon); | |
1575 | if (existingCifsSes == NULL) { | |
1576 | if (pSesInfo) { | |
1577 | if ((pSesInfo->server) && | |
1578 | (pSesInfo->status == CifsGood)) { | |
1579 | int temp_rc; | |
1580 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
1581 | /* if the socketUseCount is now zero */ | |
1582 | if((temp_rc == -ESHUTDOWN) && | |
1583 | (pSesInfo->server->tsk)) | |
1584 | send_sig(SIGKILL,pSesInfo->server->tsk,1); | |
1585 | } else | |
1586 | cFYI(1, ("No session or bad tcon")); | |
1587 | sesInfoFree(pSesInfo); | |
1588 | /* pSesInfo = NULL; */ | |
1589 | } | |
1590 | } | |
1591 | } else { | |
1592 | atomic_inc(&tcon->useCount); | |
1593 | cifs_sb->tcon = tcon; | |
1594 | tcon->ses = pSesInfo; | |
1595 | ||
1596 | /* do not care if following two calls succeed - informational only */ | |
737b758c SF |
1597 | CIFSSMBQFSDeviceInfo(xid, tcon); |
1598 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
1da177e4 | 1599 | if (tcon->ses->capabilities & CAP_UNIX) { |
737b758c | 1600 | if(!CIFSSMBQFSUnixInfo(xid, tcon)) { |
1da177e4 LT |
1601 | if(!volume_info.no_psx_acl) { |
1602 | if(CIFS_UNIX_POSIX_ACL_CAP & | |
1603 | le64_to_cpu(tcon->fsUnixInfo.Capability)) | |
1604 | cFYI(1,("server negotiated posix acl support")); | |
1605 | sb->s_flags |= MS_POSIXACL; | |
1606 | } | |
1607 | } | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | /* volume_info.password is freed above when existing session found | |
1612 | (in which case it is not needed anymore) but when new sesion is created | |
1613 | the password ptr is put in the new session structure (in which case the | |
1614 | password will be freed at unmount time) */ | |
1615 | if(volume_info.UNC) | |
1616 | kfree(volume_info.UNC); | |
1617 | FreeXid(xid); | |
1618 | return rc; | |
1619 | } | |
1620 | ||
1621 | static int | |
1622 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
1623 | char session_key[CIFS_SESSION_KEY_SIZE], | |
1624 | const struct nls_table *nls_codepage) | |
1625 | { | |
1626 | struct smb_hdr *smb_buffer; | |
1627 | struct smb_hdr *smb_buffer_response; | |
1628 | SESSION_SETUP_ANDX *pSMB; | |
1629 | SESSION_SETUP_ANDX *pSMBr; | |
1630 | char *bcc_ptr; | |
1631 | char *user; | |
1632 | char *domain; | |
1633 | int rc = 0; | |
1634 | int remaining_words = 0; | |
1635 | int bytes_returned = 0; | |
1636 | int len; | |
1637 | __u32 capabilities; | |
1638 | __u16 count; | |
1639 | ||
1640 | cFYI(1, ("In sesssetup ")); | |
1641 | if(ses == NULL) | |
1642 | return -EINVAL; | |
1643 | user = ses->userName; | |
1644 | domain = ses->domainName; | |
1645 | smb_buffer = cifs_buf_get(); | |
1646 | if (smb_buffer == NULL) { | |
1647 | return -ENOMEM; | |
1648 | } | |
1649 | smb_buffer_response = smb_buffer; | |
1650 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
1651 | ||
1652 | /* send SMBsessionSetup here */ | |
1653 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
1654 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
1655 | ||
1656 | pSMB->req_no_secext.AndXCommand = 0xFF; | |
1657 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
1658 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
1659 | ||
1660 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1661 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1662 | ||
1663 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
1664 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
1665 | if (ses->capabilities & CAP_UNICODE) { | |
1666 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
1667 | capabilities |= CAP_UNICODE; | |
1668 | } | |
1669 | if (ses->capabilities & CAP_STATUS32) { | |
1670 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
1671 | capabilities |= CAP_STATUS32; | |
1672 | } | |
1673 | if (ses->capabilities & CAP_DFS) { | |
1674 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
1675 | capabilities |= CAP_DFS; | |
1676 | } | |
1677 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
1678 | ||
1679 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
1680 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
1681 | ||
1682 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
1683 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
1684 | bcc_ptr = pByteArea(smb_buffer); | |
1685 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE); | |
1686 | bcc_ptr += CIFS_SESSION_KEY_SIZE; | |
1687 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE); | |
1688 | bcc_ptr += CIFS_SESSION_KEY_SIZE; | |
1689 | ||
1690 | if (ses->capabilities & CAP_UNICODE) { | |
1691 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
1692 | *bcc_ptr = 0; | |
1693 | bcc_ptr++; | |
1694 | } | |
1695 | if(user == NULL) | |
1696 | bytes_returned = 0; /* skill null user */ | |
1697 | else | |
1698 | bytes_returned = | |
1699 | cifs_strtoUCS((wchar_t *) bcc_ptr, user, 100, | |
1700 | nls_codepage); | |
1701 | /* convert number of 16 bit words to bytes */ | |
1702 | bcc_ptr += 2 * bytes_returned; | |
1703 | bcc_ptr += 2; /* trailing null */ | |
1704 | if (domain == NULL) | |
1705 | bytes_returned = | |
1706 | cifs_strtoUCS((wchar_t *) bcc_ptr, | |
1707 | "CIFS_LINUX_DOM", 32, nls_codepage); | |
1708 | else | |
1709 | bytes_returned = | |
1710 | cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64, | |
1711 | nls_codepage); | |
1712 | bcc_ptr += 2 * bytes_returned; | |
1713 | bcc_ptr += 2; | |
1714 | bytes_returned = | |
1715 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
1716 | 32, nls_codepage); | |
1717 | bcc_ptr += 2 * bytes_returned; | |
1718 | bytes_returned = | |
1719 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, | |
1720 | 32, nls_codepage); | |
1721 | bcc_ptr += 2 * bytes_returned; | |
1722 | bcc_ptr += 2; | |
1723 | bytes_returned = | |
1724 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
1725 | 64, nls_codepage); | |
1726 | bcc_ptr += 2 * bytes_returned; | |
1727 | bcc_ptr += 2; | |
1728 | } else { | |
1729 | if(user != NULL) { | |
1730 | strncpy(bcc_ptr, user, 200); | |
1731 | bcc_ptr += strnlen(user, 200); | |
1732 | } | |
1733 | *bcc_ptr = 0; | |
1734 | bcc_ptr++; | |
1735 | if (domain == NULL) { | |
1736 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
1737 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
1738 | } else { | |
1739 | strncpy(bcc_ptr, domain, 64); | |
1740 | bcc_ptr += strnlen(domain, 64); | |
1741 | *bcc_ptr = 0; | |
1742 | bcc_ptr++; | |
1743 | } | |
1744 | strcpy(bcc_ptr, "Linux version "); | |
1745 | bcc_ptr += strlen("Linux version "); | |
1746 | strcpy(bcc_ptr, system_utsname.release); | |
1747 | bcc_ptr += strlen(system_utsname.release) + 1; | |
1748 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
1749 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
1750 | } | |
1751 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
1752 | smb_buffer->smb_buf_length += count; | |
1753 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
1754 | ||
1755 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
1756 | &bytes_returned, 1); | |
1757 | if (rc) { | |
1758 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
1759 | } else if ((smb_buffer_response->WordCount == 3) | |
1760 | || (smb_buffer_response->WordCount == 4)) { | |
1761 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
1762 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
1763 | if (action & GUEST_LOGIN) | |
1764 | cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */ | |
1765 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
1766 | cFYI(1, ("UID = %d ", ses->Suid)); | |
1767 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1768 | bcc_ptr = pByteArea(smb_buffer_response); | |
1769 | if ((pSMBr->resp.hdr.WordCount == 3) | |
1770 | || ((pSMBr->resp.hdr.WordCount == 4) | |
1771 | && (blob_len < pSMBr->resp.ByteCount))) { | |
1772 | if (pSMBr->resp.hdr.WordCount == 4) | |
1773 | bcc_ptr += blob_len; | |
1774 | ||
1775 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
1776 | if ((long) (bcc_ptr) % 2) { | |
1777 | remaining_words = | |
1778 | (BCC(smb_buffer_response) - 1) /2; | |
1779 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
1780 | } else { | |
1781 | remaining_words = | |
1782 | BCC(smb_buffer_response) / 2; | |
1783 | } | |
1784 | len = | |
1785 | UniStrnlen((wchar_t *) bcc_ptr, | |
1786 | remaining_words - 1); | |
1787 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
1788 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
1789 | terminating last Unicode string in response */ | |
433dc24f SF |
1790 | ses->serverOS = kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1791 | if(ses->serverOS == NULL) | |
1792 | goto sesssetup_nomem; | |
1da177e4 LT |
1793 | cifs_strfromUCS_le(ses->serverOS, |
1794 | (wchar_t *)bcc_ptr, len,nls_codepage); | |
1795 | bcc_ptr += 2 * (len + 1); | |
1796 | remaining_words -= len + 1; | |
1797 | ses->serverOS[2 * len] = 0; | |
1798 | ses->serverOS[1 + (2 * len)] = 0; | |
1799 | if (remaining_words > 0) { | |
1800 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
1801 | remaining_words-1); | |
433dc24f SF |
1802 | ses->serverNOS = kcalloc(1, 2 * (len + 1),GFP_KERNEL); |
1803 | if(ses->serverNOS == NULL) | |
1804 | goto sesssetup_nomem; | |
1da177e4 LT |
1805 | cifs_strfromUCS_le(ses->serverNOS, |
1806 | (wchar_t *)bcc_ptr,len,nls_codepage); | |
1807 | bcc_ptr += 2 * (len + 1); | |
1808 | ses->serverNOS[2 * len] = 0; | |
1809 | ses->serverNOS[1 + (2 * len)] = 0; | |
1810 | if(strncmp(ses->serverNOS, | |
1811 | "NT LAN Manager 4",16) == 0) { | |
1812 | cFYI(1,("NT4 server")); | |
1813 | ses->flags |= CIFS_SES_NT4; | |
1814 | } | |
1815 | remaining_words -= len + 1; | |
1816 | if (remaining_words > 0) { | |
433dc24f | 1817 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 LT |
1818 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
1819 | ses->serverDomain = | |
433dc24f SF |
1820 | kcalloc(1, 2*(len+1),GFP_KERNEL); |
1821 | if(ses->serverDomain == NULL) | |
1822 | goto sesssetup_nomem; | |
1da177e4 LT |
1823 | cifs_strfromUCS_le(ses->serverDomain, |
1824 | (wchar_t *)bcc_ptr,len,nls_codepage); | |
1825 | bcc_ptr += 2 * (len + 1); | |
1826 | ses->serverDomain[2*len] = 0; | |
1827 | ses->serverDomain[1+(2*len)] = 0; | |
1828 | } /* else no more room so create dummy domain string */ | |
1829 | else | |
433dc24f SF |
1830 | ses->serverDomain = |
1831 | kcalloc(1, 2, GFP_KERNEL); | |
1da177e4 | 1832 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
1833 | /* if these kcallocs fail not much we |
1834 | can do, but better to not fail the | |
1835 | sesssetup itself */ | |
1da177e4 | 1836 | ses->serverDomain = |
433dc24f | 1837 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 | 1838 | ses->serverNOS = |
433dc24f | 1839 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 LT |
1840 | } |
1841 | } else { /* ASCII */ | |
1842 | len = strnlen(bcc_ptr, 1024); | |
1843 | if (((long) bcc_ptr + len) - (long) | |
1844 | pByteArea(smb_buffer_response) | |
1845 | <= BCC(smb_buffer_response)) { | |
433dc24f SF |
1846 | ses->serverOS = kcalloc(1, len + 1,GFP_KERNEL); |
1847 | if(ses->serverOS == NULL) | |
1848 | goto sesssetup_nomem; | |
1da177e4 LT |
1849 | strncpy(ses->serverOS,bcc_ptr, len); |
1850 | ||
1851 | bcc_ptr += len; | |
1852 | bcc_ptr[0] = 0; /* null terminate the string */ | |
1853 | bcc_ptr++; | |
1854 | ||
1855 | len = strnlen(bcc_ptr, 1024); | |
433dc24f SF |
1856 | ses->serverNOS = kcalloc(1, len + 1,GFP_KERNEL); |
1857 | if(ses->serverNOS == NULL) | |
1858 | goto sesssetup_nomem; | |
1da177e4 LT |
1859 | strncpy(ses->serverNOS, bcc_ptr, len); |
1860 | bcc_ptr += len; | |
1861 | bcc_ptr[0] = 0; | |
1862 | bcc_ptr++; | |
1863 | ||
1864 | len = strnlen(bcc_ptr, 1024); | |
433dc24f SF |
1865 | ses->serverDomain = kcalloc(1, len + 1,GFP_KERNEL); |
1866 | if(ses->serverDomain == NULL) | |
1867 | goto sesssetup_nomem; | |
1da177e4 LT |
1868 | strncpy(ses->serverDomain, bcc_ptr, len); |
1869 | bcc_ptr += len; | |
1870 | bcc_ptr[0] = 0; | |
1871 | bcc_ptr++; | |
1872 | } else | |
1873 | cFYI(1, | |
1874 | ("Variable field of length %d extends beyond end of smb ", | |
1875 | len)); | |
1876 | } | |
1877 | } else { | |
1878 | cERROR(1, | |
1879 | (" Security Blob Length extends beyond end of SMB")); | |
1880 | } | |
1881 | } else { | |
1882 | cERROR(1, | |
1883 | (" Invalid Word count %d: ", | |
1884 | smb_buffer_response->WordCount)); | |
1885 | rc = -EIO; | |
1886 | } | |
433dc24f SF |
1887 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
1888 | since that could make reconnection harder, and | |
1889 | reconnection might be needed to free memory */ | |
1da177e4 LT |
1890 | if (smb_buffer) |
1891 | cifs_buf_release(smb_buffer); | |
1892 | ||
1893 | return rc; | |
1894 | } | |
1895 | ||
1896 | static int | |
1897 | CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
1898 | char *SecurityBlob,int SecurityBlobLength, | |
1899 | const struct nls_table *nls_codepage) | |
1900 | { | |
1901 | struct smb_hdr *smb_buffer; | |
1902 | struct smb_hdr *smb_buffer_response; | |
1903 | SESSION_SETUP_ANDX *pSMB; | |
1904 | SESSION_SETUP_ANDX *pSMBr; | |
1905 | char *bcc_ptr; | |
1906 | char *user; | |
1907 | char *domain; | |
1908 | int rc = 0; | |
1909 | int remaining_words = 0; | |
1910 | int bytes_returned = 0; | |
1911 | int len; | |
1912 | __u32 capabilities; | |
1913 | __u16 count; | |
1914 | ||
1915 | cFYI(1, ("In spnego sesssetup ")); | |
1916 | if(ses == NULL) | |
1917 | return -EINVAL; | |
1918 | user = ses->userName; | |
1919 | domain = ses->domainName; | |
1920 | ||
1921 | smb_buffer = cifs_buf_get(); | |
1922 | if (smb_buffer == NULL) { | |
1923 | return -ENOMEM; | |
1924 | } | |
1925 | smb_buffer_response = smb_buffer; | |
1926 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
1927 | ||
1928 | /* send SMBsessionSetup here */ | |
1929 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
1930 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1931 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
1932 | pSMB->req.AndXCommand = 0xFF; | |
1933 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
1934 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
1935 | ||
1936 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1937 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1938 | ||
1939 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
1940 | CAP_EXTENDED_SECURITY; | |
1941 | if (ses->capabilities & CAP_UNICODE) { | |
1942 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
1943 | capabilities |= CAP_UNICODE; | |
1944 | } | |
1945 | if (ses->capabilities & CAP_STATUS32) { | |
1946 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
1947 | capabilities |= CAP_STATUS32; | |
1948 | } | |
1949 | if (ses->capabilities & CAP_DFS) { | |
1950 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
1951 | capabilities |= CAP_DFS; | |
1952 | } | |
1953 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
1954 | ||
1955 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
1956 | bcc_ptr = pByteArea(smb_buffer); | |
1957 | memcpy(bcc_ptr, SecurityBlob, SecurityBlobLength); | |
1958 | bcc_ptr += SecurityBlobLength; | |
1959 | ||
1960 | if (ses->capabilities & CAP_UNICODE) { | |
1961 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode strings */ | |
1962 | *bcc_ptr = 0; | |
1963 | bcc_ptr++; | |
1964 | } | |
1965 | bytes_returned = | |
1966 | cifs_strtoUCS((wchar_t *) bcc_ptr, user, 100, nls_codepage); | |
1967 | bcc_ptr += 2 * bytes_returned; /* convert num of 16 bit words to bytes */ | |
1968 | bcc_ptr += 2; /* trailing null */ | |
1969 | if (domain == NULL) | |
1970 | bytes_returned = | |
1971 | cifs_strtoUCS((wchar_t *) bcc_ptr, | |
1972 | "CIFS_LINUX_DOM", 32, nls_codepage); | |
1973 | else | |
1974 | bytes_returned = | |
1975 | cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64, | |
1976 | nls_codepage); | |
1977 | bcc_ptr += 2 * bytes_returned; | |
1978 | bcc_ptr += 2; | |
1979 | bytes_returned = | |
1980 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
1981 | 32, nls_codepage); | |
1982 | bcc_ptr += 2 * bytes_returned; | |
1983 | bytes_returned = | |
1984 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32, | |
1985 | nls_codepage); | |
1986 | bcc_ptr += 2 * bytes_returned; | |
1987 | bcc_ptr += 2; | |
1988 | bytes_returned = | |
1989 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
1990 | 64, nls_codepage); | |
1991 | bcc_ptr += 2 * bytes_returned; | |
1992 | bcc_ptr += 2; | |
1993 | } else { | |
1994 | strncpy(bcc_ptr, user, 200); | |
1995 | bcc_ptr += strnlen(user, 200); | |
1996 | *bcc_ptr = 0; | |
1997 | bcc_ptr++; | |
1998 | if (domain == NULL) { | |
1999 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2000 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2001 | } else { | |
2002 | strncpy(bcc_ptr, domain, 64); | |
2003 | bcc_ptr += strnlen(domain, 64); | |
2004 | *bcc_ptr = 0; | |
2005 | bcc_ptr++; | |
2006 | } | |
2007 | strcpy(bcc_ptr, "Linux version "); | |
2008 | bcc_ptr += strlen("Linux version "); | |
2009 | strcpy(bcc_ptr, system_utsname.release); | |
2010 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2011 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2012 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2013 | } | |
2014 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2015 | smb_buffer->smb_buf_length += count; | |
2016 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2017 | ||
2018 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2019 | &bytes_returned, 1); | |
2020 | if (rc) { | |
2021 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2022 | } else if ((smb_buffer_response->WordCount == 3) | |
2023 | || (smb_buffer_response->WordCount == 4)) { | |
2024 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2025 | __u16 blob_len = | |
2026 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2027 | if (action & GUEST_LOGIN) | |
2028 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
2029 | if (ses) { | |
2030 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
2031 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2032 | bcc_ptr = pByteArea(smb_buffer_response); /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2033 | ||
2034 | /* BB Fix below to make endian neutral !! */ | |
2035 | ||
2036 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2037 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2038 | && (blob_len < | |
2039 | pSMBr->resp.ByteCount))) { | |
2040 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2041 | bcc_ptr += | |
2042 | blob_len; | |
2043 | cFYI(1, | |
2044 | ("Security Blob Length %d ", | |
2045 | blob_len)); | |
2046 | } | |
2047 | ||
2048 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2049 | if ((long) (bcc_ptr) % 2) { | |
2050 | remaining_words = | |
2051 | (BCC(smb_buffer_response) | |
2052 | - 1) / 2; | |
2053 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2054 | } else { | |
2055 | remaining_words = | |
2056 | BCC | |
2057 | (smb_buffer_response) / 2; | |
2058 | } | |
2059 | len = | |
2060 | UniStrnlen((wchar_t *) bcc_ptr, | |
2061 | remaining_words - 1); | |
2062 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2063 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2064 | terminating last Unicode string in response */ | |
2065 | ses->serverOS = | |
433dc24f | 2066 | kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1da177e4 LT |
2067 | cifs_strfromUCS_le(ses->serverOS, |
2068 | (wchar_t *) | |
2069 | bcc_ptr, len, | |
2070 | nls_codepage); | |
2071 | bcc_ptr += 2 * (len + 1); | |
2072 | remaining_words -= len + 1; | |
2073 | ses->serverOS[2 * len] = 0; | |
2074 | ses->serverOS[1 + (2 * len)] = 0; | |
2075 | if (remaining_words > 0) { | |
2076 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2077 | remaining_words | |
2078 | - 1); | |
2079 | ses->serverNOS = | |
433dc24f | 2080 | kcalloc(1, 2 * (len + 1), |
1da177e4 LT |
2081 | GFP_KERNEL); |
2082 | cifs_strfromUCS_le(ses->serverNOS, | |
2083 | (wchar_t *)bcc_ptr, | |
2084 | len, | |
2085 | nls_codepage); | |
2086 | bcc_ptr += 2 * (len + 1); | |
2087 | ses->serverNOS[2 * len] = 0; | |
2088 | ses->serverNOS[1 + (2 * len)] = 0; | |
2089 | remaining_words -= len + 1; | |
2090 | if (remaining_words > 0) { | |
2091 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2092 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
433dc24f | 2093 | ses->serverDomain = kcalloc(1, 2*(len+1),GFP_KERNEL); |
1da177e4 LT |
2094 | cifs_strfromUCS_le(ses->serverDomain, |
2095 | (wchar_t *)bcc_ptr, | |
2096 | len, | |
2097 | nls_codepage); | |
2098 | bcc_ptr += 2*(len+1); | |
2099 | ses->serverDomain[2*len] = 0; | |
2100 | ses->serverDomain[1+(2*len)] = 0; | |
2101 | } /* else no more room so create dummy domain string */ | |
2102 | else | |
2103 | ses->serverDomain = | |
433dc24f | 2104 | kcalloc(1, 2,GFP_KERNEL); |
1da177e4 | 2105 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2106 | ses->serverDomain = kcalloc(1, 2, GFP_KERNEL); |
2107 | ses->serverNOS = kcalloc(1, 2, GFP_KERNEL); | |
1da177e4 LT |
2108 | } |
2109 | } else { /* ASCII */ | |
2110 | ||
2111 | len = strnlen(bcc_ptr, 1024); | |
2112 | if (((long) bcc_ptr + len) - (long) | |
2113 | pByteArea(smb_buffer_response) | |
2114 | <= BCC(smb_buffer_response)) { | |
433dc24f | 2115 | ses->serverOS = kcalloc(1, len + 1, GFP_KERNEL); |
1da177e4 LT |
2116 | strncpy(ses->serverOS, bcc_ptr, len); |
2117 | ||
2118 | bcc_ptr += len; | |
2119 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2120 | bcc_ptr++; | |
2121 | ||
2122 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 2123 | ses->serverNOS = kcalloc(1, len + 1,GFP_KERNEL); |
1da177e4 LT |
2124 | strncpy(ses->serverNOS, bcc_ptr, len); |
2125 | bcc_ptr += len; | |
2126 | bcc_ptr[0] = 0; | |
2127 | bcc_ptr++; | |
2128 | ||
2129 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 2130 | ses->serverDomain = kcalloc(1, len + 1, GFP_KERNEL); |
1da177e4 LT |
2131 | strncpy(ses->serverDomain, bcc_ptr, len); |
2132 | bcc_ptr += len; | |
2133 | bcc_ptr[0] = 0; | |
2134 | bcc_ptr++; | |
2135 | } else | |
2136 | cFYI(1, | |
2137 | ("Variable field of length %d extends beyond end of smb ", | |
2138 | len)); | |
2139 | } | |
2140 | } else { | |
2141 | cERROR(1, | |
2142 | (" Security Blob Length extends beyond end of SMB")); | |
2143 | } | |
2144 | } else { | |
2145 | cERROR(1, ("No session structure passed in.")); | |
2146 | } | |
2147 | } else { | |
2148 | cERROR(1, | |
2149 | (" Invalid Word count %d: ", | |
2150 | smb_buffer_response->WordCount)); | |
2151 | rc = -EIO; | |
2152 | } | |
2153 | ||
2154 | if (smb_buffer) | |
2155 | cifs_buf_release(smb_buffer); | |
2156 | ||
2157 | return rc; | |
2158 | } | |
2159 | ||
2160 | static int | |
2161 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
2162 | struct cifsSesInfo *ses, int * pNTLMv2_flag, | |
2163 | const struct nls_table *nls_codepage) | |
2164 | { | |
2165 | struct smb_hdr *smb_buffer; | |
2166 | struct smb_hdr *smb_buffer_response; | |
2167 | SESSION_SETUP_ANDX *pSMB; | |
2168 | SESSION_SETUP_ANDX *pSMBr; | |
2169 | char *bcc_ptr; | |
2170 | char *domain; | |
2171 | int rc = 0; | |
2172 | int remaining_words = 0; | |
2173 | int bytes_returned = 0; | |
2174 | int len; | |
2175 | int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); | |
2176 | PNEGOTIATE_MESSAGE SecurityBlob; | |
2177 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2178 | __u32 negotiate_flags, capabilities; | |
2179 | __u16 count; | |
2180 | ||
2181 | cFYI(1, ("In NTLMSSP sesssetup (negotiate) ")); | |
2182 | if(ses == NULL) | |
2183 | return -EINVAL; | |
2184 | domain = ses->domainName; | |
2185 | *pNTLMv2_flag = FALSE; | |
2186 | smb_buffer = cifs_buf_get(); | |
2187 | if (smb_buffer == NULL) { | |
2188 | return -ENOMEM; | |
2189 | } | |
2190 | smb_buffer_response = smb_buffer; | |
2191 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2192 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2193 | ||
2194 | /* send SMBsessionSetup here */ | |
2195 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2196 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
2197 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2198 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2199 | ||
2200 | pSMB->req.AndXCommand = 0xFF; | |
2201 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2202 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2203 | ||
2204 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2205 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2206 | ||
2207 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2208 | CAP_EXTENDED_SECURITY; | |
2209 | if (ses->capabilities & CAP_UNICODE) { | |
2210 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2211 | capabilities |= CAP_UNICODE; | |
2212 | } | |
2213 | if (ses->capabilities & CAP_STATUS32) { | |
2214 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2215 | capabilities |= CAP_STATUS32; | |
2216 | } | |
2217 | if (ses->capabilities & CAP_DFS) { | |
2218 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2219 | capabilities |= CAP_DFS; | |
2220 | } | |
2221 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2222 | ||
2223 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2224 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2225 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2226 | SecurityBlob->MessageType = NtLmNegotiate; | |
2227 | negotiate_flags = | |
2228 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
2229 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | 0x80000000 | | |
2230 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; | |
2231 | if(sign_CIFS_PDUs) | |
2232 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; | |
2233 | if(ntlmv2_support) | |
2234 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2235 | /* setup pointers to domain name and workstation name */ | |
2236 | bcc_ptr += SecurityBlobLength; | |
2237 | ||
2238 | SecurityBlob->WorkstationName.Buffer = 0; | |
2239 | SecurityBlob->WorkstationName.Length = 0; | |
2240 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2241 | ||
2242 | if (domain == NULL) { | |
2243 | SecurityBlob->DomainName.Buffer = 0; | |
2244 | SecurityBlob->DomainName.Length = 0; | |
2245 | SecurityBlob->DomainName.MaximumLength = 0; | |
2246 | } else { | |
2247 | __u16 len; | |
2248 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2249 | strncpy(bcc_ptr, domain, 63); | |
2250 | len = strnlen(domain, 64); | |
2251 | SecurityBlob->DomainName.MaximumLength = | |
2252 | cpu_to_le16(len); | |
2253 | SecurityBlob->DomainName.Buffer = | |
2254 | cpu_to_le32((long) &SecurityBlob-> | |
2255 | DomainString - | |
2256 | (long) &SecurityBlob->Signature); | |
2257 | bcc_ptr += len; | |
2258 | SecurityBlobLength += len; | |
2259 | SecurityBlob->DomainName.Length = | |
2260 | cpu_to_le16(len); | |
2261 | } | |
2262 | if (ses->capabilities & CAP_UNICODE) { | |
2263 | if ((long) bcc_ptr % 2) { | |
2264 | *bcc_ptr = 0; | |
2265 | bcc_ptr++; | |
2266 | } | |
2267 | ||
2268 | bytes_returned = | |
2269 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
2270 | 32, nls_codepage); | |
2271 | bcc_ptr += 2 * bytes_returned; | |
2272 | bytes_returned = | |
2273 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32, | |
2274 | nls_codepage); | |
2275 | bcc_ptr += 2 * bytes_returned; | |
2276 | bcc_ptr += 2; /* null terminate Linux version */ | |
2277 | bytes_returned = | |
2278 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
2279 | 64, nls_codepage); | |
2280 | bcc_ptr += 2 * bytes_returned; | |
2281 | *(bcc_ptr + 1) = 0; | |
2282 | *(bcc_ptr + 2) = 0; | |
2283 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2284 | *(bcc_ptr + 1) = 0; | |
2285 | *(bcc_ptr + 2) = 0; | |
2286 | bcc_ptr += 2; /* null domain */ | |
2287 | } else { /* ASCII */ | |
2288 | strcpy(bcc_ptr, "Linux version "); | |
2289 | bcc_ptr += strlen("Linux version "); | |
2290 | strcpy(bcc_ptr, system_utsname.release); | |
2291 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2292 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2293 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2294 | bcc_ptr++; /* empty domain field */ | |
2295 | *bcc_ptr = 0; | |
2296 | } | |
2297 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2298 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2299 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2300 | smb_buffer->smb_buf_length += count; | |
2301 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2302 | ||
2303 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2304 | &bytes_returned, 1); | |
2305 | ||
2306 | if (smb_buffer_response->Status.CifsError == | |
2307 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2308 | rc = 0; | |
2309 | ||
2310 | if (rc) { | |
2311 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2312 | } else if ((smb_buffer_response->WordCount == 3) | |
2313 | || (smb_buffer_response->WordCount == 4)) { | |
2314 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2315 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2316 | ||
2317 | if (action & GUEST_LOGIN) | |
2318 | cFYI(1, (" Guest login")); | |
2319 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
2320 | ||
2321 | bcc_ptr = pByteArea(smb_buffer_response); | |
2322 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2323 | ||
2324 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2325 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2326 | cFYI(1, | |
2327 | ("Unexpected NTLMSSP message type received %d", | |
2328 | SecurityBlob2->MessageType)); | |
2329 | } else if (ses) { | |
2330 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ | |
2331 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2332 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2333 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2334 | && (blob_len < | |
2335 | pSMBr->resp.ByteCount))) { | |
2336 | ||
2337 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2338 | bcc_ptr += blob_len; | |
2339 | cFYI(1, | |
2340 | ("Security Blob Length %d ", | |
2341 | blob_len)); | |
2342 | } | |
2343 | ||
2344 | cFYI(1, ("NTLMSSP Challenge rcvd ")); | |
2345 | ||
2346 | memcpy(ses->server->cryptKey, | |
2347 | SecurityBlob2->Challenge, | |
2348 | CIFS_CRYPTO_KEY_SIZE); | |
2349 | if(SecurityBlob2->NegotiateFlags & cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) | |
2350 | *pNTLMv2_flag = TRUE; | |
2351 | ||
2352 | if((SecurityBlob2->NegotiateFlags & | |
2353 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
2354 | || (sign_CIFS_PDUs > 1)) | |
2355 | ses->server->secMode |= | |
2356 | SECMODE_SIGN_REQUIRED; | |
2357 | if ((SecurityBlob2->NegotiateFlags & | |
2358 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) | |
2359 | ses->server->secMode |= | |
2360 | SECMODE_SIGN_ENABLED; | |
2361 | ||
2362 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2363 | if ((long) (bcc_ptr) % 2) { | |
2364 | remaining_words = | |
2365 | (BCC(smb_buffer_response) | |
2366 | - 1) / 2; | |
2367 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2368 | } else { | |
2369 | remaining_words = | |
2370 | BCC | |
2371 | (smb_buffer_response) / 2; | |
2372 | } | |
2373 | len = | |
2374 | UniStrnlen((wchar_t *) bcc_ptr, | |
2375 | remaining_words - 1); | |
2376 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2377 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2378 | terminating last Unicode string in response */ | |
2379 | ses->serverOS = | |
433dc24f | 2380 | kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1da177e4 LT |
2381 | cifs_strfromUCS_le(ses->serverOS, |
2382 | (wchar_t *) | |
2383 | bcc_ptr, len, | |
2384 | nls_codepage); | |
2385 | bcc_ptr += 2 * (len + 1); | |
2386 | remaining_words -= len + 1; | |
2387 | ses->serverOS[2 * len] = 0; | |
2388 | ses->serverOS[1 + (2 * len)] = 0; | |
2389 | if (remaining_words > 0) { | |
2390 | len = UniStrnlen((wchar_t *) | |
2391 | bcc_ptr, | |
2392 | remaining_words | |
2393 | - 1); | |
2394 | ses->serverNOS = | |
433dc24f | 2395 | kcalloc(1, 2 * (len + 1), |
1da177e4 LT |
2396 | GFP_KERNEL); |
2397 | cifs_strfromUCS_le(ses-> | |
2398 | serverNOS, | |
2399 | (wchar_t *) | |
2400 | bcc_ptr, | |
2401 | len, | |
2402 | nls_codepage); | |
2403 | bcc_ptr += 2 * (len + 1); | |
2404 | ses->serverNOS[2 * len] = 0; | |
2405 | ses->serverNOS[1 + | |
2406 | (2 * len)] = 0; | |
2407 | remaining_words -= len + 1; | |
2408 | if (remaining_words > 0) { | |
2409 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2410 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
2411 | ses->serverDomain = | |
433dc24f | 2412 | kcalloc(1, 2 * |
1da177e4 LT |
2413 | (len + |
2414 | 1), | |
2415 | GFP_KERNEL); | |
2416 | cifs_strfromUCS_le | |
2417 | (ses-> | |
2418 | serverDomain, | |
2419 | (wchar_t *) | |
2420 | bcc_ptr, len, | |
2421 | nls_codepage); | |
2422 | bcc_ptr += | |
2423 | 2 * (len + 1); | |
2424 | ses-> | |
2425 | serverDomain[2 | |
2426 | * len] | |
2427 | = 0; | |
2428 | ses-> | |
2429 | serverDomain[1 | |
2430 | + | |
2431 | (2 | |
2432 | * | |
2433 | len)] | |
2434 | = 0; | |
2435 | } /* else no more room so create dummy domain string */ | |
2436 | else | |
2437 | ses->serverDomain = | |
433dc24f | 2438 | kcalloc(1, 2, |
1da177e4 LT |
2439 | GFP_KERNEL); |
2440 | } else { /* no room so create dummy domain and NOS string */ | |
2441 | ses->serverDomain = | |
433dc24f | 2442 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 | 2443 | ses->serverNOS = |
433dc24f | 2444 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 LT |
2445 | } |
2446 | } else { /* ASCII */ | |
2447 | len = strnlen(bcc_ptr, 1024); | |
2448 | if (((long) bcc_ptr + len) - (long) | |
2449 | pByteArea(smb_buffer_response) | |
2450 | <= BCC(smb_buffer_response)) { | |
2451 | ses->serverOS = | |
433dc24f | 2452 | kcalloc(1, len + 1, |
1da177e4 LT |
2453 | GFP_KERNEL); |
2454 | strncpy(ses->serverOS, | |
2455 | bcc_ptr, len); | |
2456 | ||
2457 | bcc_ptr += len; | |
2458 | bcc_ptr[0] = 0; /* null terminate string */ | |
2459 | bcc_ptr++; | |
2460 | ||
2461 | len = strnlen(bcc_ptr, 1024); | |
2462 | ses->serverNOS = | |
433dc24f | 2463 | kcalloc(1, len + 1, |
1da177e4 LT |
2464 | GFP_KERNEL); |
2465 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2466 | bcc_ptr += len; | |
2467 | bcc_ptr[0] = 0; | |
2468 | bcc_ptr++; | |
2469 | ||
2470 | len = strnlen(bcc_ptr, 1024); | |
2471 | ses->serverDomain = | |
433dc24f | 2472 | kcalloc(1, len + 1, |
1da177e4 LT |
2473 | GFP_KERNEL); |
2474 | strncpy(ses->serverDomain, bcc_ptr, len); | |
2475 | bcc_ptr += len; | |
2476 | bcc_ptr[0] = 0; | |
2477 | bcc_ptr++; | |
2478 | } else | |
2479 | cFYI(1, | |
2480 | ("Variable field of length %d extends beyond end of smb ", | |
2481 | len)); | |
2482 | } | |
2483 | } else { | |
2484 | cERROR(1, | |
2485 | (" Security Blob Length extends beyond end of SMB")); | |
2486 | } | |
2487 | } else { | |
2488 | cERROR(1, ("No session structure passed in.")); | |
2489 | } | |
2490 | } else { | |
2491 | cERROR(1, | |
2492 | (" Invalid Word count %d: ", | |
2493 | smb_buffer_response->WordCount)); | |
2494 | rc = -EIO; | |
2495 | } | |
2496 | ||
2497 | if (smb_buffer) | |
2498 | cifs_buf_release(smb_buffer); | |
2499 | ||
2500 | return rc; | |
2501 | } | |
2502 | static int | |
2503 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2504 | char *ntlm_session_key, int ntlmv2_flag, | |
2505 | const struct nls_table *nls_codepage) | |
2506 | { | |
2507 | struct smb_hdr *smb_buffer; | |
2508 | struct smb_hdr *smb_buffer_response; | |
2509 | SESSION_SETUP_ANDX *pSMB; | |
2510 | SESSION_SETUP_ANDX *pSMBr; | |
2511 | char *bcc_ptr; | |
2512 | char *user; | |
2513 | char *domain; | |
2514 | int rc = 0; | |
2515 | int remaining_words = 0; | |
2516 | int bytes_returned = 0; | |
2517 | int len; | |
2518 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2519 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2520 | __u32 negotiate_flags, capabilities; | |
2521 | __u16 count; | |
2522 | ||
2523 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
2524 | if(ses == NULL) | |
2525 | return -EINVAL; | |
2526 | user = ses->userName; | |
2527 | domain = ses->domainName; | |
2528 | smb_buffer = cifs_buf_get(); | |
2529 | if (smb_buffer == NULL) { | |
2530 | return -ENOMEM; | |
2531 | } | |
2532 | smb_buffer_response = smb_buffer; | |
2533 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2534 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2535 | ||
2536 | /* send SMBsessionSetup here */ | |
2537 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2538 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
2539 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2540 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2541 | pSMB->req.AndXCommand = 0xFF; | |
2542 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2543 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2544 | ||
2545 | pSMB->req.hdr.Uid = ses->Suid; | |
2546 | ||
2547 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2548 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2549 | ||
2550 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2551 | CAP_EXTENDED_SECURITY; | |
2552 | if (ses->capabilities & CAP_UNICODE) { | |
2553 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2554 | capabilities |= CAP_UNICODE; | |
2555 | } | |
2556 | if (ses->capabilities & CAP_STATUS32) { | |
2557 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2558 | capabilities |= CAP_STATUS32; | |
2559 | } | |
2560 | if (ses->capabilities & CAP_DFS) { | |
2561 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2562 | capabilities |= CAP_DFS; | |
2563 | } | |
2564 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2565 | ||
2566 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2567 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2568 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2569 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2570 | bcc_ptr += SecurityBlobLength; | |
2571 | negotiate_flags = | |
2572 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | | |
2573 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2574 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
2575 | if(sign_CIFS_PDUs) | |
2576 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; | |
2577 | if(ntlmv2_flag) | |
2578 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2579 | ||
2580 | /* setup pointers to domain name and workstation name */ | |
2581 | ||
2582 | SecurityBlob->WorkstationName.Buffer = 0; | |
2583 | SecurityBlob->WorkstationName.Length = 0; | |
2584 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2585 | SecurityBlob->SessionKey.Length = 0; | |
2586 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2587 | SecurityBlob->SessionKey.Buffer = 0; | |
2588 | ||
2589 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2590 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2591 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2592 | ||
2593 | SecurityBlob->NtChallengeResponse.Length = | |
2594 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
2595 | SecurityBlob->NtChallengeResponse.MaximumLength = | |
2596 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
2597 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESSION_KEY_SIZE); | |
2598 | SecurityBlob->NtChallengeResponse.Buffer = | |
2599 | cpu_to_le32(SecurityBlobLength); | |
2600 | SecurityBlobLength += CIFS_SESSION_KEY_SIZE; | |
2601 | bcc_ptr += CIFS_SESSION_KEY_SIZE; | |
2602 | ||
2603 | if (ses->capabilities & CAP_UNICODE) { | |
2604 | if (domain == NULL) { | |
2605 | SecurityBlob->DomainName.Buffer = 0; | |
2606 | SecurityBlob->DomainName.Length = 0; | |
2607 | SecurityBlob->DomainName.MaximumLength = 0; | |
2608 | } else { | |
2609 | __u16 len = | |
2610 | cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64, | |
2611 | nls_codepage); | |
2612 | len *= 2; | |
2613 | SecurityBlob->DomainName.MaximumLength = | |
2614 | cpu_to_le16(len); | |
2615 | SecurityBlob->DomainName.Buffer = | |
2616 | cpu_to_le32(SecurityBlobLength); | |
2617 | bcc_ptr += len; | |
2618 | SecurityBlobLength += len; | |
2619 | SecurityBlob->DomainName.Length = | |
2620 | cpu_to_le16(len); | |
2621 | } | |
2622 | if (user == NULL) { | |
2623 | SecurityBlob->UserName.Buffer = 0; | |
2624 | SecurityBlob->UserName.Length = 0; | |
2625 | SecurityBlob->UserName.MaximumLength = 0; | |
2626 | } else { | |
2627 | __u16 len = | |
2628 | cifs_strtoUCS((wchar_t *) bcc_ptr, user, 64, | |
2629 | nls_codepage); | |
2630 | len *= 2; | |
2631 | SecurityBlob->UserName.MaximumLength = | |
2632 | cpu_to_le16(len); | |
2633 | SecurityBlob->UserName.Buffer = | |
2634 | cpu_to_le32(SecurityBlobLength); | |
2635 | bcc_ptr += len; | |
2636 | SecurityBlobLength += len; | |
2637 | SecurityBlob->UserName.Length = | |
2638 | cpu_to_le16(len); | |
2639 | } | |
2640 | ||
2641 | /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((wchar_t *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
2642 | SecurityBlob->WorkstationName.Length *= 2; | |
2643 | SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
2644 | SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength); | |
2645 | bcc_ptr += SecurityBlob->WorkstationName.Length; | |
2646 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
2647 | SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
2648 | ||
2649 | if ((long) bcc_ptr % 2) { | |
2650 | *bcc_ptr = 0; | |
2651 | bcc_ptr++; | |
2652 | } | |
2653 | bytes_returned = | |
2654 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
2655 | 32, nls_codepage); | |
2656 | bcc_ptr += 2 * bytes_returned; | |
2657 | bytes_returned = | |
2658 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32, | |
2659 | nls_codepage); | |
2660 | bcc_ptr += 2 * bytes_returned; | |
2661 | bcc_ptr += 2; /* null term version string */ | |
2662 | bytes_returned = | |
2663 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
2664 | 64, nls_codepage); | |
2665 | bcc_ptr += 2 * bytes_returned; | |
2666 | *(bcc_ptr + 1) = 0; | |
2667 | *(bcc_ptr + 2) = 0; | |
2668 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2669 | *(bcc_ptr + 1) = 0; | |
2670 | *(bcc_ptr + 2) = 0; | |
2671 | bcc_ptr += 2; /* null domain */ | |
2672 | } else { /* ASCII */ | |
2673 | if (domain == NULL) { | |
2674 | SecurityBlob->DomainName.Buffer = 0; | |
2675 | SecurityBlob->DomainName.Length = 0; | |
2676 | SecurityBlob->DomainName.MaximumLength = 0; | |
2677 | } else { | |
2678 | __u16 len; | |
2679 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2680 | strncpy(bcc_ptr, domain, 63); | |
2681 | len = strnlen(domain, 64); | |
2682 | SecurityBlob->DomainName.MaximumLength = | |
2683 | cpu_to_le16(len); | |
2684 | SecurityBlob->DomainName.Buffer = | |
2685 | cpu_to_le32(SecurityBlobLength); | |
2686 | bcc_ptr += len; | |
2687 | SecurityBlobLength += len; | |
2688 | SecurityBlob->DomainName.Length = cpu_to_le16(len); | |
2689 | } | |
2690 | if (user == NULL) { | |
2691 | SecurityBlob->UserName.Buffer = 0; | |
2692 | SecurityBlob->UserName.Length = 0; | |
2693 | SecurityBlob->UserName.MaximumLength = 0; | |
2694 | } else { | |
2695 | __u16 len; | |
2696 | strncpy(bcc_ptr, user, 63); | |
2697 | len = strnlen(user, 64); | |
2698 | SecurityBlob->UserName.MaximumLength = | |
2699 | cpu_to_le16(len); | |
2700 | SecurityBlob->UserName.Buffer = | |
2701 | cpu_to_le32(SecurityBlobLength); | |
2702 | bcc_ptr += len; | |
2703 | SecurityBlobLength += len; | |
2704 | SecurityBlob->UserName.Length = cpu_to_le16(len); | |
2705 | } | |
2706 | /* BB fill in our workstation name if known BB */ | |
2707 | ||
2708 | strcpy(bcc_ptr, "Linux version "); | |
2709 | bcc_ptr += strlen("Linux version "); | |
2710 | strcpy(bcc_ptr, system_utsname.release); | |
2711 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2712 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2713 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2714 | bcc_ptr++; /* null domain */ | |
2715 | *bcc_ptr = 0; | |
2716 | } | |
2717 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2718 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2719 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2720 | smb_buffer->smb_buf_length += count; | |
2721 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2722 | ||
2723 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2724 | &bytes_returned, 1); | |
2725 | if (rc) { | |
2726 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2727 | } else if ((smb_buffer_response->WordCount == 3) | |
2728 | || (smb_buffer_response->WordCount == 4)) { | |
2729 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2730 | __u16 blob_len = | |
2731 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2732 | if (action & GUEST_LOGIN) | |
2733 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
2734 | /* if(SecurityBlob2->MessageType != NtLm??){ | |
2735 | cFYI("Unexpected message type on auth response is %d ")); | |
2736 | } */ | |
2737 | if (ses) { | |
2738 | cFYI(1, | |
2739 | ("Does UID on challenge %d match auth response UID %d ", | |
2740 | ses->Suid, smb_buffer_response->Uid)); | |
2741 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */ | |
2742 | bcc_ptr = pByteArea(smb_buffer_response); | |
2743 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2744 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2745 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2746 | && (blob_len < | |
2747 | pSMBr->resp.ByteCount))) { | |
2748 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2749 | bcc_ptr += | |
2750 | blob_len; | |
2751 | cFYI(1, | |
2752 | ("Security Blob Length %d ", | |
2753 | blob_len)); | |
2754 | } | |
2755 | ||
2756 | cFYI(1, | |
2757 | ("NTLMSSP response to Authenticate ")); | |
2758 | ||
2759 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2760 | if ((long) (bcc_ptr) % 2) { | |
2761 | remaining_words = | |
2762 | (BCC(smb_buffer_response) | |
2763 | - 1) / 2; | |
2764 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2765 | } else { | |
2766 | remaining_words = BCC(smb_buffer_response) / 2; | |
2767 | } | |
2768 | len = | |
2769 | UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); | |
2770 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2771 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2772 | terminating last Unicode string in response */ | |
2773 | ses->serverOS = | |
433dc24f | 2774 | kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1da177e4 LT |
2775 | cifs_strfromUCS_le(ses->serverOS, |
2776 | (wchar_t *) | |
2777 | bcc_ptr, len, | |
2778 | nls_codepage); | |
2779 | bcc_ptr += 2 * (len + 1); | |
2780 | remaining_words -= len + 1; | |
2781 | ses->serverOS[2 * len] = 0; | |
2782 | ses->serverOS[1 + (2 * len)] = 0; | |
2783 | if (remaining_words > 0) { | |
2784 | len = UniStrnlen((wchar_t *) | |
2785 | bcc_ptr, | |
2786 | remaining_words | |
2787 | - 1); | |
2788 | ses->serverNOS = | |
433dc24f | 2789 | kcalloc(1, 2 * (len + 1), |
1da177e4 LT |
2790 | GFP_KERNEL); |
2791 | cifs_strfromUCS_le(ses-> | |
2792 | serverNOS, | |
2793 | (wchar_t *) | |
2794 | bcc_ptr, | |
2795 | len, | |
2796 | nls_codepage); | |
2797 | bcc_ptr += 2 * (len + 1); | |
2798 | ses->serverNOS[2 * len] = 0; | |
2799 | ses->serverNOS[1+(2*len)] = 0; | |
2800 | remaining_words -= len + 1; | |
2801 | if (remaining_words > 0) { | |
2802 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2803 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ | |
2804 | ses->serverDomain = | |
433dc24f | 2805 | kcalloc(1, 2 * |
1da177e4 LT |
2806 | (len + |
2807 | 1), | |
2808 | GFP_KERNEL); | |
2809 | cifs_strfromUCS_le | |
2810 | (ses-> | |
2811 | serverDomain, | |
2812 | (wchar_t *) | |
2813 | bcc_ptr, len, | |
2814 | nls_codepage); | |
2815 | bcc_ptr += | |
2816 | 2 * (len + 1); | |
2817 | ses-> | |
2818 | serverDomain[2 | |
2819 | * len] | |
2820 | = 0; | |
2821 | ses-> | |
2822 | serverDomain[1 | |
2823 | + | |
2824 | (2 | |
2825 | * | |
2826 | len)] | |
2827 | = 0; | |
2828 | } /* else no more room so create dummy domain string */ | |
2829 | else | |
433dc24f | 2830 | ses->serverDomain = kcalloc(1, 2,GFP_KERNEL); |
1da177e4 | 2831 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2832 | ses->serverDomain = kcalloc(1, 2, GFP_KERNEL); |
2833 | ses->serverNOS = kcalloc(1, 2, GFP_KERNEL); | |
1da177e4 LT |
2834 | } |
2835 | } else { /* ASCII */ | |
2836 | len = strnlen(bcc_ptr, 1024); | |
2837 | if (((long) bcc_ptr + len) - | |
2838 | (long) pByteArea(smb_buffer_response) | |
2839 | <= BCC(smb_buffer_response)) { | |
433dc24f | 2840 | ses->serverOS = kcalloc(1, len + 1,GFP_KERNEL); |
1da177e4 LT |
2841 | strncpy(ses->serverOS,bcc_ptr, len); |
2842 | ||
2843 | bcc_ptr += len; | |
2844 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2845 | bcc_ptr++; | |
2846 | ||
2847 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 2848 | ses->serverNOS = kcalloc(1, len+1,GFP_KERNEL); |
1da177e4 LT |
2849 | strncpy(ses->serverNOS, bcc_ptr, len); |
2850 | bcc_ptr += len; | |
2851 | bcc_ptr[0] = 0; | |
2852 | bcc_ptr++; | |
2853 | ||
2854 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 2855 | ses->serverDomain = kcalloc(1, len+1,GFP_KERNEL); |
1da177e4 LT |
2856 | strncpy(ses->serverDomain, bcc_ptr, len); |
2857 | bcc_ptr += len; | |
2858 | bcc_ptr[0] = 0; | |
2859 | bcc_ptr++; | |
2860 | } else | |
2861 | cFYI(1, | |
2862 | ("Variable field of length %d extends beyond end of smb ", | |
2863 | len)); | |
2864 | } | |
2865 | } else { | |
2866 | cERROR(1, | |
2867 | (" Security Blob Length extends beyond end of SMB")); | |
2868 | } | |
2869 | } else { | |
2870 | cERROR(1, ("No session structure passed in.")); | |
2871 | } | |
2872 | } else { | |
2873 | cERROR(1, | |
2874 | (" Invalid Word count %d: ", | |
2875 | smb_buffer_response->WordCount)); | |
2876 | rc = -EIO; | |
2877 | } | |
2878 | ||
2879 | if (smb_buffer) | |
2880 | cifs_buf_release(smb_buffer); | |
2881 | ||
2882 | return rc; | |
2883 | } | |
2884 | ||
2885 | int | |
2886 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
2887 | const char *tree, struct cifsTconInfo *tcon, | |
2888 | const struct nls_table *nls_codepage) | |
2889 | { | |
2890 | struct smb_hdr *smb_buffer; | |
2891 | struct smb_hdr *smb_buffer_response; | |
2892 | TCONX_REQ *pSMB; | |
2893 | TCONX_RSP *pSMBr; | |
2894 | unsigned char *bcc_ptr; | |
2895 | int rc = 0; | |
2896 | int length; | |
2897 | __u16 count; | |
2898 | ||
2899 | if (ses == NULL) | |
2900 | return -EIO; | |
2901 | ||
2902 | smb_buffer = cifs_buf_get(); | |
2903 | if (smb_buffer == NULL) { | |
2904 | return -ENOMEM; | |
2905 | } | |
2906 | smb_buffer_response = smb_buffer; | |
2907 | ||
2908 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
2909 | NULL /*no tid */ , 4 /*wct */ ); | |
2910 | smb_buffer->Uid = ses->Suid; | |
2911 | pSMB = (TCONX_REQ *) smb_buffer; | |
2912 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
2913 | ||
2914 | pSMB->AndXCommand = 0xFF; | |
2915 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
2916 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ | |
2917 | bcc_ptr = &pSMB->Password[0]; | |
2918 | bcc_ptr++; /* skip password */ | |
2919 | ||
2920 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2921 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2922 | ||
2923 | if (ses->capabilities & CAP_STATUS32) { | |
2924 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2925 | } | |
2926 | if (ses->capabilities & CAP_DFS) { | |
2927 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2928 | } | |
2929 | if (ses->capabilities & CAP_UNICODE) { | |
2930 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2931 | length = | |
2932 | cifs_strtoUCS((wchar_t *) bcc_ptr, tree, 100, nls_codepage); | |
2933 | bcc_ptr += 2 * length; /* convert num of 16 bit words to bytes */ | |
2934 | bcc_ptr += 2; /* skip trailing null */ | |
2935 | } else { /* ASCII */ | |
2936 | ||
2937 | strcpy(bcc_ptr, tree); | |
2938 | bcc_ptr += strlen(tree) + 1; | |
2939 | } | |
2940 | strcpy(bcc_ptr, "?????"); | |
2941 | bcc_ptr += strlen("?????"); | |
2942 | bcc_ptr += 1; | |
2943 | count = bcc_ptr - &pSMB->Password[0]; | |
2944 | pSMB->hdr.smb_buf_length += count; | |
2945 | pSMB->ByteCount = cpu_to_le16(count); | |
2946 | ||
2947 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
2948 | ||
2949 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
2950 | /* above now done in SendReceive */ | |
2951 | if ((rc == 0) && (tcon != NULL)) { | |
2952 | tcon->tidStatus = CifsGood; | |
2953 | tcon->tid = smb_buffer_response->Tid; | |
2954 | bcc_ptr = pByteArea(smb_buffer_response); | |
2955 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
2956 | /* skip service field (NB: this field is always ASCII) */ | |
2957 | bcc_ptr += length + 1; | |
2958 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); | |
2959 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2960 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
2961 | if ((bcc_ptr + (2 * length)) - | |
2962 | pByteArea(smb_buffer_response) <= | |
2963 | BCC(smb_buffer_response)) { | |
2964 | if(tcon->nativeFileSystem) | |
2965 | kfree(tcon->nativeFileSystem); | |
2966 | tcon->nativeFileSystem = | |
433dc24f | 2967 | kcalloc(1, length + 2, GFP_KERNEL); |
1da177e4 LT |
2968 | cifs_strfromUCS_le(tcon->nativeFileSystem, |
2969 | (wchar_t *) bcc_ptr, | |
2970 | length, nls_codepage); | |
2971 | bcc_ptr += 2 * length; | |
2972 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2973 | bcc_ptr[1] = 0; | |
2974 | bcc_ptr += 2; | |
2975 | } | |
2976 | /* else do not bother copying these informational fields */ | |
2977 | } else { | |
2978 | length = strnlen(bcc_ptr, 1024); | |
2979 | if ((bcc_ptr + length) - | |
2980 | pByteArea(smb_buffer_response) <= | |
2981 | BCC(smb_buffer_response)) { | |
2982 | if(tcon->nativeFileSystem) | |
2983 | kfree(tcon->nativeFileSystem); | |
2984 | tcon->nativeFileSystem = | |
433dc24f | 2985 | kcalloc(1, length + 1, GFP_KERNEL); |
1da177e4 LT |
2986 | strncpy(tcon->nativeFileSystem, bcc_ptr, |
2987 | length); | |
2988 | } | |
2989 | /* else do not bother copying these informational fields */ | |
2990 | } | |
2991 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); | |
2992 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); | |
2993 | } else if ((rc == 0) && tcon == NULL) { | |
2994 | /* all we need to save for IPC$ connection */ | |
2995 | ses->ipc_tid = smb_buffer_response->Tid; | |
2996 | } | |
2997 | ||
2998 | if (smb_buffer) | |
2999 | cifs_buf_release(smb_buffer); | |
3000 | return rc; | |
3001 | } | |
3002 | ||
3003 | int | |
3004 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3005 | { | |
3006 | int rc = 0; | |
3007 | int xid; | |
3008 | struct cifsSesInfo *ses = NULL; | |
3009 | struct task_struct *cifsd_task; | |
3010 | ||
3011 | xid = GetXid(); | |
3012 | ||
3013 | if (cifs_sb->tcon) { | |
3014 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3015 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3016 | if (rc == -EBUSY) { | |
3017 | FreeXid(xid); | |
3018 | return 0; | |
3019 | } | |
3020 | tconInfoFree(cifs_sb->tcon); | |
3021 | if ((ses) && (ses->server)) { | |
3022 | /* save off task so we do not refer to ses later */ | |
3023 | cifsd_task = ses->server->tsk; | |
3024 | cFYI(1, ("About to do SMBLogoff ")); | |
3025 | rc = CIFSSMBLogoff(xid, ses); | |
3026 | if (rc == -EBUSY) { | |
3027 | FreeXid(xid); | |
3028 | return 0; | |
3029 | } else if (rc == -ESHUTDOWN) { | |
3030 | cFYI(1,("Waking up socket by sending it signal")); | |
3031 | if(cifsd_task) | |
3032 | send_sig(SIGKILL,cifsd_task,1); | |
3033 | rc = 0; | |
3034 | } /* else - we have an smb session | |
3035 | left on this socket do not kill cifsd */ | |
3036 | } else | |
3037 | cFYI(1, ("No session or bad tcon")); | |
3038 | } | |
3039 | ||
3040 | cifs_sb->tcon = NULL; | |
3041 | if (ses) { | |
3042 | set_current_state(TASK_INTERRUPTIBLE); | |
3043 | schedule_timeout(HZ / 2); | |
3044 | } | |
3045 | if (ses) | |
3046 | sesInfoFree(ses); | |
3047 | ||
3048 | FreeXid(xid); | |
3049 | return rc; /* BB check if we should always return zero here */ | |
3050 | } | |
3051 | ||
3052 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
3053 | struct nls_table * nls_info) | |
3054 | { | |
3055 | int rc = 0; | |
3056 | char ntlm_session_key[CIFS_SESSION_KEY_SIZE]; | |
3057 | int ntlmv2_flag = FALSE; | |
ad009ac9 | 3058 | int first_time = 0; |
1da177e4 LT |
3059 | |
3060 | /* what if server changes its buffer size after dropping the session? */ | |
3061 | if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { | |
3062 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3063 | if(rc == -EAGAIN) /* retry only once on 1st time connection */ { | |
3064 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3065 | if(rc == -EAGAIN) | |
3066 | rc = -EHOSTDOWN; | |
3067 | } | |
3068 | if(rc == 0) { | |
3069 | spin_lock(&GlobalMid_Lock); | |
3070 | if(pSesInfo->server->tcpStatus != CifsExiting) | |
3071 | pSesInfo->server->tcpStatus = CifsGood; | |
3072 | else | |
3073 | rc = -EHOSTDOWN; | |
3074 | spin_unlock(&GlobalMid_Lock); | |
3075 | ||
3076 | } | |
ad009ac9 | 3077 | first_time = 1; |
1da177e4 LT |
3078 | } |
3079 | if (!rc) { | |
3080 | pSesInfo->capabilities = pSesInfo->server->capabilities; | |
3081 | if(linuxExtEnabled == 0) | |
3082 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3083 | /* pSesInfo->sequence_number = 0;*/ |
1da177e4 LT |
3084 | cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x Time Zone: %d", |
3085 | pSesInfo->server->secMode, | |
3086 | pSesInfo->server->capabilities, | |
3087 | pSesInfo->server->timeZone)); | |
3088 | if (extended_security | |
3089 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3090 | && (pSesInfo->server->secType == NTLMSSP)) { | |
3091 | cFYI(1, ("New style sesssetup ")); | |
3092 | rc = CIFSSpnegoSessSetup(xid, pSesInfo, | |
3093 | NULL /* security blob */, | |
3094 | 0 /* blob length */, | |
3095 | nls_info); | |
3096 | } else if (extended_security | |
3097 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3098 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
3099 | cFYI(1, ("NTLMSSP sesssetup ")); | |
3100 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, | |
3101 | pSesInfo, | |
3102 | &ntlmv2_flag, | |
3103 | nls_info); | |
3104 | if (!rc) { | |
3105 | if(ntlmv2_flag) { | |
3106 | char * v2_response; | |
3107 | cFYI(1,("Can use more secure NTLM version 2 password hash")); | |
3108 | if(CalcNTLMv2_partial_mac_key(pSesInfo, | |
3109 | nls_info)) { | |
3110 | rc = -ENOMEM; | |
3111 | goto ss_err_exit; | |
3112 | } else | |
3113 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
3114 | if(v2_response) { | |
3115 | CalcNTLMv2_response(pSesInfo,v2_response); | |
ad009ac9 SF |
3116 | /* if(first_time) |
3117 | cifs_calculate_ntlmv2_mac_key( | |
3118 | pSesInfo->server->mac_signing_key, | |
3119 | response, ntlm_session_key, */ | |
1da177e4 LT |
3120 | kfree(v2_response); |
3121 | /* BB Put dummy sig in SessSetup PDU? */ | |
3122 | } else { | |
3123 | rc = -ENOMEM; | |
3124 | goto ss_err_exit; | |
3125 | } | |
3126 | ||
3127 | } else { | |
3128 | SMBNTencrypt(pSesInfo->password, | |
3129 | pSesInfo->server->cryptKey, | |
3130 | ntlm_session_key); | |
3131 | ||
ad009ac9 SF |
3132 | if(first_time) |
3133 | cifs_calculate_mac_key( | |
3134 | pSesInfo->server->mac_signing_key, | |
3135 | ntlm_session_key, | |
3136 | pSesInfo->password); | |
1da177e4 LT |
3137 | } |
3138 | /* for better security the weaker lanman hash not sent | |
3139 | in AuthSessSetup so we no longer calculate it */ | |
3140 | ||
3141 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3142 | pSesInfo, | |
3143 | ntlm_session_key, | |
3144 | ntlmv2_flag, | |
3145 | nls_info); | |
3146 | } | |
3147 | } else { /* old style NTLM 0.12 session setup */ | |
3148 | SMBNTencrypt(pSesInfo->password, | |
3149 | pSesInfo->server->cryptKey, | |
3150 | ntlm_session_key); | |
3151 | ||
ad009ac9 SF |
3152 | if(first_time) |
3153 | cifs_calculate_mac_key( | |
3154 | pSesInfo->server->mac_signing_key, | |
3155 | ntlm_session_key, pSesInfo->password); | |
3156 | ||
1da177e4 LT |
3157 | rc = CIFSSessSetup(xid, pSesInfo, |
3158 | ntlm_session_key, nls_info); | |
3159 | } | |
3160 | if (rc) { | |
3161 | cERROR(1,("Send error in SessSetup = %d",rc)); | |
3162 | } else { | |
3163 | cFYI(1,("CIFS Session Established successfully")); | |
3164 | pSesInfo->status = CifsGood; | |
3165 | } | |
3166 | } | |
3167 | ss_err_exit: | |
3168 | return rc; | |
3169 | } | |
3170 |