Commit | Line | Data |
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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 | ||
e4eb295d | 119 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
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 | ||
e4eb295d SF |
197 | /* |
198 | return codes: | |
199 | 0 not a transact2, or all data present | |
200 | >0 transact2 with that much data missing | |
201 | -EINVAL = invalid transact2 | |
202 | ||
203 | */ | |
204 | static int check2ndT2(struct smb_hdr * pSMB, unsigned int maxBufSize) | |
205 | { | |
206 | struct smb_t2_rsp * pSMBt; | |
207 | int total_data_size; | |
208 | int data_in_this_rsp; | |
209 | int remaining; | |
210 | ||
211 | if(pSMB->Command != SMB_COM_TRANSACTION2) | |
212 | return 0; | |
213 | ||
214 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
215 | /* check for parm and data offset going beyond end of smb */ | |
216 | if(pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
217 | cFYI(1,("invalid transact2 word count")); | |
218 | return -EINVAL; | |
219 | } | |
220 | ||
221 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
222 | ||
223 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
224 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
225 | ||
226 | remaining = total_data_size - data_in_this_rsp; | |
227 | ||
228 | if(remaining == 0) | |
229 | return 0; | |
230 | else if(remaining < 0) { | |
231 | cFYI(1,("total data %d smaller than data in frame %d", | |
232 | total_data_size, data_in_this_rsp)); | |
233 | return -EINVAL; | |
234 | } else { | |
235 | cFYI(1,("missing %d bytes from transact2, check next response", | |
236 | remaining)); | |
237 | if(total_data_size > maxBufSize) { | |
238 | cERROR(1,("TotalDataSize %d is over maximum buffer %d", | |
239 | total_data_size,maxBufSize)); | |
240 | return -EINVAL; | |
241 | } | |
242 | return remaining; | |
243 | } | |
244 | } | |
245 | ||
246 | static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB) | |
247 | { | |
248 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
249 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
250 | int total_data_size; | |
251 | int total_in_buf; | |
252 | int remaining; | |
253 | int total_in_buf2; | |
254 | char * data_area_of_target; | |
255 | char * data_area_of_buf2; | |
256 | __u16 byte_count; | |
257 | ||
258 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
259 | ||
260 | if(total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { | |
261 | cFYI(1,("total data sizes of primary and secondary t2 differ")); | |
262 | } | |
263 | ||
264 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
265 | ||
266 | remaining = total_data_size - total_in_buf; | |
267 | ||
268 | if(remaining < 0) | |
269 | return -EINVAL; | |
270 | ||
271 | if(remaining == 0) /* nothing to do, ignore */ | |
272 | return 0; | |
273 | ||
274 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); | |
275 | if(remaining < total_in_buf2) { | |
276 | cFYI(1,("transact2 2nd response contains too much data")); | |
277 | } | |
278 | ||
279 | /* find end of first SMB data area */ | |
280 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + | |
281 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); | |
282 | /* validate target area */ | |
283 | ||
284 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
285 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); | |
286 | ||
287 | data_area_of_target += total_in_buf; | |
288 | ||
289 | /* copy second buffer into end of first buffer */ | |
290 | memcpy(data_area_of_target,data_area_of_buf2,total_in_buf2); | |
291 | total_in_buf += total_in_buf2; | |
292 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
293 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
294 | byte_count += total_in_buf2; | |
295 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
296 | ||
297 | byte_count = be32_to_cpu(pTargetSMB->smb_buf_length); | |
298 | byte_count += total_in_buf2; | |
299 | ||
300 | /* BB also add check that we are not beyond maximum buffer size */ | |
301 | ||
302 | pTargetSMB->smb_buf_length = cpu_to_be32(byte_count); | |
303 | ||
304 | if(remaining == total_in_buf2) { | |
305 | cFYI(1,("found the last secondary response")); | |
306 | return 0; /* we are done */ | |
307 | } else /* more responses to go */ | |
308 | return 1; | |
309 | ||
310 | } | |
311 | ||
1da177e4 LT |
312 | static int |
313 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
314 | { | |
315 | int length; | |
316 | unsigned int pdu_length, total_read; | |
317 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
318 | struct smb_hdr *bigbuf = NULL; |
319 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
320 | struct msghdr smb_msg; |
321 | struct kvec iov; | |
322 | struct socket *csocket = server->ssocket; | |
323 | struct list_head *tmp; | |
324 | struct cifsSesInfo *ses; | |
325 | struct task_struct *task_to_wake = NULL; | |
326 | struct mid_q_entry *mid_entry; | |
327 | char *temp; | |
b8643e1b | 328 | int isLargeBuf = FALSE; |
e4eb295d SF |
329 | int isMultiRsp; |
330 | int reconnect; | |
1da177e4 LT |
331 | |
332 | daemonize("cifsd"); | |
333 | allow_signal(SIGKILL); | |
334 | current->flags |= PF_MEMALLOC; | |
335 | server->tsk = current; /* save process info to wake at shutdown */ | |
336 | cFYI(1, ("Demultiplex PID: %d", current->pid)); | |
337 | write_lock(&GlobalSMBSeslock); | |
338 | atomic_inc(&tcpSesAllocCount); | |
339 | length = tcpSesAllocCount.counter; | |
340 | write_unlock(&GlobalSMBSeslock); | |
341 | if(length > 1) { | |
342 | mempool_resize(cifs_req_poolp, | |
343 | length + cifs_min_rcv, | |
344 | GFP_KERNEL); | |
345 | } | |
346 | ||
347 | while (server->tcpStatus != CifsExiting) { | |
b8643e1b SF |
348 | if (bigbuf == NULL) { |
349 | bigbuf = cifs_buf_get(); | |
350 | if(bigbuf == NULL) { | |
351 | cERROR(1,("No memory for large SMB response")); | |
352 | msleep(3000); | |
353 | /* retry will check if exiting */ | |
354 | continue; | |
355 | } | |
356 | } else if(isLargeBuf) { | |
357 | /* we are reusing a dirtry large buf, clear its start */ | |
358 | memset(bigbuf, 0, sizeof (struct smb_hdr)); | |
1da177e4 | 359 | } |
b8643e1b SF |
360 | |
361 | if (smallbuf == NULL) { | |
362 | smallbuf = cifs_small_buf_get(); | |
363 | if(smallbuf == NULL) { | |
364 | cERROR(1,("No memory for SMB response")); | |
365 | msleep(1000); | |
366 | /* retry will check if exiting */ | |
367 | continue; | |
368 | } | |
369 | /* beginning of smb buffer is cleared in our buf_get */ | |
370 | } else /* if existing small buf clear beginning */ | |
371 | memset(smallbuf, 0, sizeof (struct smb_hdr)); | |
372 | ||
373 | isLargeBuf = FALSE; | |
e4eb295d | 374 | isMultiRsp = FALSE; |
b8643e1b | 375 | smb_buffer = smallbuf; |
1da177e4 LT |
376 | iov.iov_base = smb_buffer; |
377 | iov.iov_len = 4; | |
378 | smb_msg.msg_control = NULL; | |
379 | smb_msg.msg_controllen = 0; | |
380 | length = | |
381 | kernel_recvmsg(csocket, &smb_msg, | |
382 | &iov, 1, 4, 0 /* BB see socket.h flags */); | |
383 | ||
384 | if(server->tcpStatus == CifsExiting) { | |
385 | break; | |
386 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
57337e42 | 387 | cFYI(1,("Reconnect after server stopped responding")); |
1da177e4 LT |
388 | cifs_reconnect(server); |
389 | cFYI(1,("call to reconnect done")); | |
390 | csocket = server->ssocket; | |
391 | continue; | |
392 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 393 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
394 | allowing socket to clear and app threads to set |
395 | tcpStatus CifsNeedReconnect if server hung */ | |
396 | continue; | |
397 | } else if (length <= 0) { | |
398 | if(server->tcpStatus == CifsNew) { | |
57337e42 | 399 | cFYI(1,("tcp session abend after SMBnegprot")); |
09d1db5c SF |
400 | /* some servers kill the TCP session rather than |
401 | returning an SMB negprot error, in which | |
402 | case reconnecting here is not going to help, | |
403 | and so simply return error to mount */ | |
1da177e4 LT |
404 | break; |
405 | } | |
406 | if(length == -EINTR) { | |
407 | cFYI(1,("cifsd thread killed")); | |
408 | break; | |
409 | } | |
57337e42 SF |
410 | cFYI(1,("Reconnect after unexpected peek error %d", |
411 | length)); | |
1da177e4 LT |
412 | cifs_reconnect(server); |
413 | csocket = server->ssocket; | |
414 | wake_up(&server->response_q); | |
415 | continue; | |
46810cbf SF |
416 | } else if (length < 4) { |
417 | cFYI(1, | |
57337e42 | 418 | ("Frame under four bytes received (%d bytes long)", |
46810cbf SF |
419 | length)); |
420 | cifs_reconnect(server); | |
421 | csocket = server->ssocket; | |
422 | wake_up(&server->response_q); | |
423 | continue; | |
424 | } | |
1da177e4 | 425 | |
46810cbf SF |
426 | /* the right amount was read from socket - 4 bytes */ |
427 | ||
428 | pdu_length = ntohl(smb_buffer->smb_buf_length); | |
429 | cFYI(1,("rfc1002 length(big endian)0x%x)", pdu_length+4)); | |
430 | ||
431 | temp = (char *) smb_buffer; | |
432 | if (temp[0] == (char) RFC1002_SESSION_KEEP_ALIVE) { | |
e4eb295d | 433 | continue; |
46810cbf | 434 | } else if (temp[0] == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
e4eb295d SF |
435 | cFYI(1,("Good RFC 1002 session rsp")); |
436 | continue; | |
46810cbf SF |
437 | } else if (temp[0] == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
438 | /* we get this from Windows 98 instead of | |
439 | an error on SMB negprot response */ | |
e4eb295d SF |
440 | cFYI(1,("Negative RFC1002 Session Response Error 0x%x)", |
441 | temp[4])); | |
46810cbf SF |
442 | if(server->tcpStatus == CifsNew) { |
443 | /* if nack on negprot (rather than | |
444 | ret of smb negprot error) reconnecting | |
445 | not going to help, ret error to mount */ | |
446 | break; | |
447 | } else { | |
448 | /* give server a second to | |
449 | clean up before reconnect attempt */ | |
450 | msleep(1000); | |
451 | /* always try 445 first on reconnect | |
452 | since we get NACK on some if we ever | |
453 | connected to port 139 (the NACK is | |
454 | since we do not begin with RFC1001 | |
455 | session initialize frame) */ | |
456 | server->addr.sockAddr.sin_port = | |
457 | htons(CIFS_PORT); | |
1da177e4 LT |
458 | cifs_reconnect(server); |
459 | csocket = server->ssocket; | |
46810cbf | 460 | wake_up(&server->response_q); |
1da177e4 | 461 | continue; |
46810cbf SF |
462 | } |
463 | } else if (temp[0] != (char) 0) { | |
464 | cERROR(1,("Unknown RFC 1002 frame")); | |
465 | cifs_dump_mem(" Received Data: ", temp, length); | |
466 | cifs_reconnect(server); | |
467 | csocket = server->ssocket; | |
468 | continue; | |
e4eb295d SF |
469 | } |
470 | ||
471 | /* else we have an SMB response */ | |
472 | if((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || | |
46810cbf | 473 | (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) { |
e4eb295d | 474 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 475 | length, pdu_length+4)); |
e4eb295d SF |
476 | cifs_reconnect(server); |
477 | csocket = server->ssocket; | |
478 | wake_up(&server->response_q); | |
479 | continue; | |
480 | } | |
481 | ||
482 | /* else length ok */ | |
483 | reconnect = 0; | |
484 | ||
485 | if(pdu_length > MAX_CIFS_HDR_SIZE - 4) { | |
486 | isLargeBuf = TRUE; | |
487 | memcpy(bigbuf, smallbuf, 4); | |
488 | smb_buffer = bigbuf; | |
489 | } | |
490 | length = 0; | |
491 | iov.iov_base = 4 + (char *)smb_buffer; | |
492 | iov.iov_len = pdu_length; | |
493 | for (total_read = 0; total_read < pdu_length; | |
494 | total_read += length) { | |
495 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
496 | pdu_length - total_read, 0); | |
497 | if((server->tcpStatus == CifsExiting) || | |
498 | (length == -EINTR)) { | |
499 | /* then will exit */ | |
500 | reconnect = 2; | |
501 | break; | |
502 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
503 | cifs_reconnect(server); |
504 | csocket = server->ssocket; | |
e4eb295d SF |
505 | /* Reconnect wakes up rspns q */ |
506 | /* Now we will reread sock */ | |
507 | reconnect = 1; | |
508 | break; | |
509 | } else if ((length == -ERESTARTSYS) || | |
510 | (length == -EAGAIN)) { | |
511 | msleep(1); /* minimum sleep to prevent looping, | |
512 | allowing socket to clear and app | |
513 | threads to set tcpStatus | |
514 | CifsNeedReconnect if server hung*/ | |
46810cbf | 515 | continue; |
e4eb295d SF |
516 | } else if (length <= 0) { |
517 | cERROR(1,("Received no data, expecting %d", | |
518 | pdu_length - total_read)); | |
519 | cifs_reconnect(server); | |
520 | csocket = server->ssocket; | |
521 | reconnect = 1; | |
522 | break; | |
46810cbf | 523 | } |
e4eb295d SF |
524 | } |
525 | if(reconnect == 2) | |
526 | break; | |
527 | else if(reconnect == 1) | |
528 | continue; | |
1da177e4 | 529 | |
e4eb295d SF |
530 | length += 4; /* account for rfc1002 hdr */ |
531 | ||
09d1db5c | 532 | |
e4eb295d SF |
533 | dump_smb(smb_buffer, length); |
534 | if (checkSMB (smb_buffer, smb_buffer->Mid, total_read+4)) { | |
535 | cERROR(1, ("Bad SMB Received ")); | |
536 | continue; | |
537 | } | |
1da177e4 | 538 | |
e4eb295d SF |
539 | |
540 | task_to_wake = NULL; | |
541 | spin_lock(&GlobalMid_Lock); | |
542 | list_for_each(tmp, &server->pending_mid_q) { | |
543 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
544 | ||
545 | if ((mid_entry->mid == smb_buffer->Mid) && | |
546 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && | |
547 | (mid_entry->command == smb_buffer->Command)) { | |
e4eb295d SF |
548 | if(check2ndT2(smb_buffer,server->maxBuf) > 0) { |
549 | /* We have a multipart transact2 resp */ | |
cd63499c | 550 | isMultiRsp = TRUE; |
e4eb295d SF |
551 | if(mid_entry->resp_buf) { |
552 | /* merge response - fix up 1st*/ | |
553 | if(coalesce_t2(smb_buffer, | |
554 | mid_entry->resp_buf)) { | |
e4eb295d SF |
555 | break; |
556 | } else { | |
557 | /* all parts received */ | |
558 | goto multi_t2_fnd; | |
559 | } | |
560 | } else { | |
561 | if(!isLargeBuf) { | |
562 | cERROR(1,("1st trans2 resp needs bigbuf")); | |
563 | /* BB maybe we can fix this up, switch | |
564 | to already allocated large buffer? */ | |
565 | } else { | |
cd63499c | 566 | /* Have first buffer */ |
e4eb295d SF |
567 | mid_entry->resp_buf = |
568 | smb_buffer; | |
569 | mid_entry->largeBuf = 1; | |
e4eb295d SF |
570 | bigbuf = NULL; |
571 | } | |
572 | } | |
573 | break; | |
574 | } | |
575 | mid_entry->resp_buf = smb_buffer; | |
46810cbf | 576 | if(isLargeBuf) |
e4eb295d | 577 | mid_entry->largeBuf = 1; |
46810cbf | 578 | else |
e4eb295d SF |
579 | mid_entry->largeBuf = 0; |
580 | multi_t2_fnd: | |
581 | task_to_wake = mid_entry->tsk; | |
582 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
583 | break; | |
46810cbf | 584 | } |
1da177e4 | 585 | } |
e4eb295d SF |
586 | spin_unlock(&GlobalMid_Lock); |
587 | if (task_to_wake) { | |
cd63499c SF |
588 | /* Was previous buf put in mpx struct for multi-rsp? */ |
589 | if(!isMultiRsp) { | |
590 | /* smb buffer will be freed by user thread */ | |
591 | if(isLargeBuf) { | |
592 | bigbuf = NULL; | |
593 | } else | |
594 | smallbuf = NULL; | |
595 | } | |
e4eb295d | 596 | wake_up_process(task_to_wake); |
57337e42 | 597 | } else if ((is_valid_oplock_break(smb_buffer) == FALSE) |
e4eb295d SF |
598 | && (isMultiRsp == FALSE)) { |
599 | cERROR(1, ("No task to wake, unknown frame rcvd!")); | |
600 | cifs_dump_mem("Received Data is: ",temp,sizeof(struct smb_hdr)); | |
601 | } | |
602 | } /* end while !EXITING */ | |
603 | ||
1da177e4 LT |
604 | spin_lock(&GlobalMid_Lock); |
605 | server->tcpStatus = CifsExiting; | |
606 | server->tsk = NULL; | |
607 | atomic_set(&server->inFlight, 0); | |
608 | spin_unlock(&GlobalMid_Lock); | |
609 | /* Although there should not be any requests blocked on | |
610 | this queue it can not hurt to be paranoid and try to wake up requests | |
09d1db5c | 611 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
612 | to the same server - they now will see the session is in exit state |
613 | and get out of SendReceive. */ | |
614 | wake_up_all(&server->request_q); | |
615 | /* give those requests time to exit */ | |
b8643e1b SF |
616 | msleep(125); |
617 | ||
1da177e4 LT |
618 | if(server->ssocket) { |
619 | sock_release(csocket); | |
620 | server->ssocket = NULL; | |
621 | } | |
b8643e1b SF |
622 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
623 | if (bigbuf != NULL) | |
624 | cifs_buf_release(bigbuf); | |
625 | if (smallbuf != NULL) | |
626 | cifs_small_buf_release(smallbuf); | |
1da177e4 LT |
627 | |
628 | read_lock(&GlobalSMBSeslock); | |
629 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
630 | /* loop through server session structures attached to this and |
631 | mark them dead */ | |
1da177e4 LT |
632 | list_for_each(tmp, &GlobalSMBSessionList) { |
633 | ses = | |
634 | list_entry(tmp, struct cifsSesInfo, | |
635 | cifsSessionList); | |
636 | if (ses->server == server) { | |
637 | ses->status = CifsExiting; | |
638 | ses->server = NULL; | |
639 | } | |
640 | } | |
641 | read_unlock(&GlobalSMBSeslock); | |
642 | } else { | |
643 | spin_lock(&GlobalMid_Lock); | |
644 | list_for_each(tmp, &server->pending_mid_q) { | |
645 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
646 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
647 | cFYI(1, | |
09d1db5c | 648 | ("Clearing Mid 0x%x - waking up ",mid_entry->mid)); |
1da177e4 LT |
649 | task_to_wake = mid_entry->tsk; |
650 | if(task_to_wake) { | |
651 | wake_up_process(task_to_wake); | |
652 | } | |
653 | } | |
654 | } | |
655 | spin_unlock(&GlobalMid_Lock); | |
656 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 657 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 658 | msleep(125); |
1da177e4 LT |
659 | } |
660 | ||
661 | if (list_empty(&server->pending_mid_q)) { | |
662 | /* mpx threads have not exited yet give them | |
663 | at least the smb send timeout time for long ops */ | |
664 | cFYI(1, ("Wait for exit from demultiplex thread")); | |
b8643e1b | 665 | msleep(46); |
1da177e4 LT |
666 | /* if threads still have not exited they are probably never |
667 | coming home not much else we can do but free the memory */ | |
668 | } | |
669 | kfree(server); | |
670 | ||
671 | write_lock(&GlobalSMBSeslock); | |
672 | atomic_dec(&tcpSesAllocCount); | |
673 | length = tcpSesAllocCount.counter; | |
674 | write_unlock(&GlobalSMBSeslock); | |
675 | if(length > 0) { | |
676 | mempool_resize(cifs_req_poolp, | |
677 | length + cifs_min_rcv, | |
678 | GFP_KERNEL); | |
679 | } | |
b8643e1b SF |
680 | |
681 | msleep(250); | |
1da177e4 LT |
682 | return 0; |
683 | } | |
684 | ||
1da177e4 LT |
685 | static int |
686 | cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) | |
687 | { | |
688 | char *value; | |
689 | char *data; | |
690 | unsigned int temp_len, i, j; | |
691 | char separator[2]; | |
692 | ||
693 | separator[0] = ','; | |
694 | separator[1] = 0; | |
695 | ||
696 | memset(vol->source_rfc1001_name,0x20,15); | |
697 | for(i=0;i < strnlen(system_utsname.nodename,15);i++) { | |
698 | /* does not have to be a perfect mapping since the field is | |
699 | informational, only used for servers that do not support | |
700 | port 445 and it can be overridden at mount time */ | |
09d1db5c SF |
701 | vol->source_rfc1001_name[i] = |
702 | toupper(system_utsname.nodename[i]); | |
1da177e4 LT |
703 | } |
704 | vol->source_rfc1001_name[15] = 0; | |
705 | ||
706 | vol->linux_uid = current->uid; /* current->euid instead? */ | |
707 | vol->linux_gid = current->gid; | |
708 | vol->dir_mode = S_IRWXUGO; | |
709 | /* 2767 perms indicate mandatory locking support */ | |
710 | vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); | |
711 | ||
712 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
713 | vol->rw = TRUE; | |
714 | ||
715 | if (!options) | |
716 | return 1; | |
717 | ||
718 | if(strncmp(options,"sep=",4) == 0) { | |
719 | if(options[4] != 0) { | |
720 | separator[0] = options[4]; | |
721 | options += 5; | |
722 | } else { | |
723 | cFYI(1,("Null separator not allowed")); | |
724 | } | |
725 | } | |
726 | ||
727 | while ((data = strsep(&options, separator)) != NULL) { | |
728 | if (!*data) | |
729 | continue; | |
730 | if ((value = strchr(data, '=')) != NULL) | |
731 | *value++ = '\0'; | |
732 | ||
733 | if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/ | |
734 | vol->no_xattr = 0; | |
735 | } else if (strnicmp(data, "nouser_xattr",12) == 0) { | |
736 | vol->no_xattr = 1; | |
737 | } else if (strnicmp(data, "user", 4) == 0) { | |
738 | if (!value || !*value) { | |
739 | printk(KERN_WARNING | |
740 | "CIFS: invalid or missing username\n"); | |
741 | return 1; /* needs_arg; */ | |
742 | } | |
743 | if (strnlen(value, 200) < 200) { | |
744 | vol->username = value; | |
745 | } else { | |
746 | printk(KERN_WARNING "CIFS: username too long\n"); | |
747 | return 1; | |
748 | } | |
749 | } else if (strnicmp(data, "pass", 4) == 0) { | |
750 | if (!value) { | |
751 | vol->password = NULL; | |
752 | continue; | |
753 | } else if(value[0] == 0) { | |
754 | /* check if string begins with double comma | |
755 | since that would mean the password really | |
756 | does start with a comma, and would not | |
757 | indicate an empty string */ | |
758 | if(value[1] != separator[0]) { | |
759 | vol->password = NULL; | |
760 | continue; | |
761 | } | |
762 | } | |
763 | temp_len = strlen(value); | |
764 | /* removed password length check, NTLM passwords | |
765 | can be arbitrarily long */ | |
766 | ||
767 | /* if comma in password, the string will be | |
768 | prematurely null terminated. Commas in password are | |
769 | specified across the cifs mount interface by a double | |
770 | comma ie ,, and a comma used as in other cases ie ',' | |
771 | as a parameter delimiter/separator is single and due | |
772 | to the strsep above is temporarily zeroed. */ | |
773 | ||
774 | /* NB: password legally can have multiple commas and | |
775 | the only illegal character in a password is null */ | |
776 | ||
09d1db5c SF |
777 | if ((value[temp_len] == 0) && |
778 | (value[temp_len+1] == separator[0])) { | |
1da177e4 LT |
779 | /* reinsert comma */ |
780 | value[temp_len] = separator[0]; | |
781 | temp_len+=2; /* move after the second comma */ | |
782 | while(value[temp_len] != 0) { | |
783 | if (value[temp_len] == separator[0]) { | |
09d1db5c SF |
784 | if (value[temp_len+1] == |
785 | separator[0]) { | |
786 | /* skip second comma */ | |
787 | temp_len++; | |
1da177e4 LT |
788 | } else { |
789 | /* single comma indicating start | |
790 | of next parm */ | |
791 | break; | |
792 | } | |
793 | } | |
794 | temp_len++; | |
795 | } | |
796 | if(value[temp_len] == 0) { | |
797 | options = NULL; | |
798 | } else { | |
799 | value[temp_len] = 0; | |
800 | /* point option to start of next parm */ | |
801 | options = value + temp_len + 1; | |
802 | } | |
803 | /* go from value to value + temp_len condensing | |
804 | double commas to singles. Note that this ends up | |
805 | allocating a few bytes too many, which is ok */ | |
433dc24f SF |
806 | vol->password = kcalloc(1, temp_len, GFP_KERNEL); |
807 | if(vol->password == NULL) { | |
808 | printk("CIFS: no memory for pass\n"); | |
809 | return 1; | |
810 | } | |
1da177e4 LT |
811 | for(i=0,j=0;i<temp_len;i++,j++) { |
812 | vol->password[j] = value[i]; | |
09d1db5c SF |
813 | if(value[i] == separator[0] |
814 | && value[i+1] == separator[0]) { | |
1da177e4 LT |
815 | /* skip second comma */ |
816 | i++; | |
817 | } | |
818 | } | |
819 | vol->password[j] = 0; | |
820 | } else { | |
09d1db5c | 821 | vol->password = kcalloc(1, temp_len+1, GFP_KERNEL); |
433dc24f SF |
822 | if(vol->password == NULL) { |
823 | printk("CIFS: no memory for pass\n"); | |
824 | return 1; | |
825 | } | |
1da177e4 LT |
826 | strcpy(vol->password, value); |
827 | } | |
828 | } else if (strnicmp(data, "ip", 2) == 0) { | |
829 | if (!value || !*value) { | |
830 | vol->UNCip = NULL; | |
831 | } else if (strnlen(value, 35) < 35) { | |
832 | vol->UNCip = value; | |
833 | } else { | |
834 | printk(KERN_WARNING "CIFS: ip address too long\n"); | |
835 | return 1; | |
836 | } | |
837 | } else if ((strnicmp(data, "unc", 3) == 0) | |
838 | || (strnicmp(data, "target", 6) == 0) | |
839 | || (strnicmp(data, "path", 4) == 0)) { | |
840 | if (!value || !*value) { | |
841 | printk(KERN_WARNING | |
842 | "CIFS: invalid path to network resource\n"); | |
843 | return 1; /* needs_arg; */ | |
844 | } | |
845 | if ((temp_len = strnlen(value, 300)) < 300) { | |
846 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
847 | if(vol->UNC == NULL) | |
848 | return 1; | |
849 | strcpy(vol->UNC,value); | |
850 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
851 | vol->UNC[0] = '\\'; | |
852 | vol->UNC[1] = '\\'; | |
853 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
854 | printk(KERN_WARNING | |
855 | "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
856 | return 1; | |
857 | } | |
858 | } else { | |
859 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
860 | return 1; | |
861 | } | |
862 | } else if ((strnicmp(data, "domain", 3) == 0) | |
863 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
864 | if (!value || !*value) { | |
865 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
866 | return 1; /* needs_arg; */ | |
867 | } | |
868 | /* BB are there cases in which a comma can be valid in | |
869 | a domain name and need special handling? */ | |
870 | if (strnlen(value, 65) < 65) { | |
871 | vol->domainname = value; | |
872 | cFYI(1, ("Domain name set")); | |
873 | } else { | |
874 | printk(KERN_WARNING "CIFS: domain name too long\n"); | |
875 | return 1; | |
876 | } | |
877 | } else if (strnicmp(data, "iocharset", 9) == 0) { | |
878 | if (!value || !*value) { | |
879 | printk(KERN_WARNING "CIFS: invalid iocharset specified\n"); | |
880 | return 1; /* needs_arg; */ | |
881 | } | |
882 | if (strnlen(value, 65) < 65) { | |
883 | if(strnicmp(value,"default",7)) | |
884 | vol->iocharset = value; | |
885 | /* if iocharset not set load_nls_default used by caller */ | |
886 | cFYI(1, ("iocharset set to %s",value)); | |
887 | } else { | |
888 | printk(KERN_WARNING "CIFS: iocharset name too long.\n"); | |
889 | return 1; | |
890 | } | |
891 | } else if (strnicmp(data, "uid", 3) == 0) { | |
892 | if (value && *value) { | |
893 | vol->linux_uid = | |
894 | simple_strtoul(value, &value, 0); | |
895 | } | |
896 | } else if (strnicmp(data, "gid", 3) == 0) { | |
897 | if (value && *value) { | |
898 | vol->linux_gid = | |
899 | simple_strtoul(value, &value, 0); | |
900 | } | |
901 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
902 | if (value && *value) { | |
903 | vol->file_mode = | |
904 | simple_strtoul(value, &value, 0); | |
905 | } | |
906 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
907 | if (value && *value) { | |
908 | vol->dir_mode = | |
909 | simple_strtoul(value, &value, 0); | |
910 | } | |
911 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
912 | if (value && *value) { | |
913 | vol->dir_mode = | |
914 | simple_strtoul(value, &value, 0); | |
915 | } | |
916 | } else if (strnicmp(data, "port", 4) == 0) { | |
917 | if (value && *value) { | |
918 | vol->port = | |
919 | simple_strtoul(value, &value, 0); | |
920 | } | |
921 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
922 | if (value && *value) { | |
923 | vol->rsize = | |
924 | simple_strtoul(value, &value, 0); | |
925 | } | |
926 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
927 | if (value && *value) { | |
928 | vol->wsize = | |
929 | simple_strtoul(value, &value, 0); | |
930 | } | |
931 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
932 | if (value && *value) { | |
933 | vol->sockopt = | |
934 | simple_strtoul(value, &value, 0); | |
935 | } | |
936 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
937 | if (!value || !*value || (*value == ' ')) { | |
938 | cFYI(1,("invalid (empty) netbiosname specified")); | |
939 | } else { | |
940 | memset(vol->source_rfc1001_name,0x20,15); | |
941 | for(i=0;i<15;i++) { | |
942 | /* BB are there cases in which a comma can be | |
943 | valid in this workstation netbios name (and need | |
944 | special handling)? */ | |
945 | ||
946 | /* We do not uppercase netbiosname for user */ | |
947 | if (value[i]==0) | |
948 | break; | |
949 | else | |
950 | vol->source_rfc1001_name[i] = value[i]; | |
951 | } | |
952 | /* The string has 16th byte zero still from | |
953 | set at top of the function */ | |
954 | if((i==15) && (value[i] != 0)) | |
955 | printk(KERN_WARNING "CIFS: netbiosname longer than 15 and was truncated.\n"); | |
956 | } | |
957 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
958 | /* ignore */ | |
959 | } else if (strnicmp(data, "version", 3) == 0) { | |
960 | /* ignore */ | |
961 | } else if (strnicmp(data, "guest",5) == 0) { | |
962 | /* ignore */ | |
963 | } else if (strnicmp(data, "rw", 2) == 0) { | |
964 | vol->rw = TRUE; | |
965 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
966 | (strnicmp(data, "nosuid", 6) == 0) || | |
967 | (strnicmp(data, "exec", 4) == 0) || | |
968 | (strnicmp(data, "noexec", 6) == 0) || | |
969 | (strnicmp(data, "nodev", 5) == 0) || | |
970 | (strnicmp(data, "noauto", 6) == 0) || | |
971 | (strnicmp(data, "dev", 3) == 0)) { | |
972 | /* The mount tool or mount.cifs helper (if present) | |
973 | uses these opts to set flags, and the flags are read | |
974 | by the kernel vfs layer before we get here (ie | |
975 | before read super) so there is no point trying to | |
976 | parse these options again and set anything and it | |
977 | is ok to just ignore them */ | |
978 | continue; | |
979 | } else if (strnicmp(data, "ro", 2) == 0) { | |
980 | vol->rw = FALSE; | |
981 | } else if (strnicmp(data, "hard", 4) == 0) { | |
982 | vol->retry = 1; | |
983 | } else if (strnicmp(data, "soft", 4) == 0) { | |
984 | vol->retry = 0; | |
985 | } else if (strnicmp(data, "perm", 4) == 0) { | |
986 | vol->noperm = 0; | |
987 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
988 | vol->noperm = 1; | |
6a0b4824 SF |
989 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
990 | vol->remap = 1; | |
991 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
992 | vol->remap = 0; | |
1da177e4 LT |
993 | } else if (strnicmp(data, "setuids", 7) == 0) { |
994 | vol->setuids = 1; | |
995 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
996 | vol->setuids = 0; | |
997 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
998 | vol->retry = 0; | |
999 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1000 | vol->retry = 1; | |
1001 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1002 | vol->intr = 0; | |
1003 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1004 | vol->intr = 1; | |
1005 | } else if (strnicmp(data, "serverino",7) == 0) { | |
1006 | vol->server_ino = 1; | |
1007 | } else if (strnicmp(data, "noserverino",9) == 0) { | |
1008 | vol->server_ino = 0; | |
1009 | } else if (strnicmp(data, "acl",3) == 0) { | |
1010 | vol->no_psx_acl = 0; | |
1011 | } else if (strnicmp(data, "noacl",5) == 0) { | |
1012 | vol->no_psx_acl = 1; | |
1013 | } else if (strnicmp(data, "direct",6) == 0) { | |
1014 | vol->direct_io = 1; | |
1015 | } else if (strnicmp(data, "forcedirectio",13) == 0) { | |
1016 | vol->direct_io = 1; | |
1017 | } else if (strnicmp(data, "in6_addr",8) == 0) { | |
1018 | if (!value || !*value) { | |
1019 | vol->in6_addr = NULL; | |
1020 | } else if (strnlen(value, 49) == 48) { | |
1021 | vol->in6_addr = value; | |
1022 | } else { | |
1023 | printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n"); | |
1024 | return 1; | |
1025 | } | |
1026 | } else if (strnicmp(data, "noac", 4) == 0) { | |
1027 | printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1028 | } else | |
1029 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data); | |
1030 | } | |
1031 | if (vol->UNC == NULL) { | |
1032 | if(devname == NULL) { | |
1033 | printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n"); | |
1034 | return 1; | |
1035 | } | |
1036 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
1037 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
1038 | if(vol->UNC == NULL) | |
1039 | return 1; | |
1040 | strcpy(vol->UNC,devname); | |
1041 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
1042 | vol->UNC[0] = '\\'; | |
1043 | vol->UNC[1] = '\\'; | |
1044 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
1045 | printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
1046 | return 1; | |
1047 | } | |
1048 | } else { | |
1049 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1050 | return 1; | |
1051 | } | |
1052 | } | |
1053 | if(vol->UNCip == NULL) | |
1054 | vol->UNCip = &vol->UNC[2]; | |
1055 | ||
1056 | return 0; | |
1057 | } | |
1058 | ||
1059 | static struct cifsSesInfo * | |
1060 | cifs_find_tcp_session(struct in_addr * target_ip_addr, | |
1061 | struct in6_addr *target_ip6_addr, | |
1062 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1063 | { | |
1064 | struct list_head *tmp; | |
1065 | struct cifsSesInfo *ses; | |
1066 | *psrvTcp = NULL; | |
1067 | read_lock(&GlobalSMBSeslock); | |
1068 | ||
1069 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1070 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1071 | if (ses->server) { | |
1072 | if((target_ip_addr && | |
1073 | (ses->server->addr.sockAddr.sin_addr.s_addr | |
1074 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1075 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1076 | target_ip6_addr,sizeof(*target_ip6_addr)))){ | |
1077 | /* BB lock server and tcp session and increment use count here?? */ | |
1078 | *psrvTcp = ses->server; /* found a match on the TCP session */ | |
1079 | /* BB check if reconnection needed */ | |
1080 | if (strncmp | |
1081 | (ses->userName, userName, | |
1082 | MAX_USERNAME_SIZE) == 0){ | |
1083 | read_unlock(&GlobalSMBSeslock); | |
1084 | return ses; /* found exact match on both tcp and SMB sessions */ | |
1085 | } | |
1086 | } | |
1087 | } | |
1088 | /* else tcp and smb sessions need reconnection */ | |
1089 | } | |
1090 | read_unlock(&GlobalSMBSeslock); | |
1091 | return NULL; | |
1092 | } | |
1093 | ||
1094 | static struct cifsTconInfo * | |
1095 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1096 | { | |
1097 | struct list_head *tmp; | |
1098 | struct cifsTconInfo *tcon; | |
1099 | ||
1100 | read_lock(&GlobalSMBSeslock); | |
1101 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
1102 | cFYI(1, ("Next tcon - ")); | |
1103 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
1104 | if (tcon->ses) { | |
1105 | if (tcon->ses->server) { | |
1106 | cFYI(1, | |
1107 | (" old ip addr: %x == new ip %x ?", | |
1108 | tcon->ses->server->addr.sockAddr.sin_addr. | |
1109 | s_addr, new_target_ip_addr)); | |
1110 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
1111 | s_addr == new_target_ip_addr) { | |
1112 | /* BB lock tcon and server and tcp session and increment use count here? */ | |
1113 | /* found a match on the TCP session */ | |
1114 | /* BB check if reconnection needed */ | |
1115 | cFYI(1,("Matched ip, old UNC: %s == new: %s ?", | |
1116 | tcon->treeName, uncName)); | |
1117 | if (strncmp | |
1118 | (tcon->treeName, uncName, | |
1119 | MAX_TREE_SIZE) == 0) { | |
1120 | cFYI(1, | |
1121 | ("Matched UNC, old user: %s == new: %s ?", | |
1122 | tcon->treeName, uncName)); | |
1123 | if (strncmp | |
1124 | (tcon->ses->userName, | |
1125 | userName, | |
1126 | MAX_USERNAME_SIZE) == 0) { | |
1127 | read_unlock(&GlobalSMBSeslock); | |
1128 | return tcon;/* also matched user (smb session)*/ | |
1129 | } | |
1130 | } | |
1131 | } | |
1132 | } | |
1133 | } | |
1134 | } | |
1135 | read_unlock(&GlobalSMBSeslock); | |
1136 | return NULL; | |
1137 | } | |
1138 | ||
1139 | int | |
1140 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1141 | const char *old_path, const struct nls_table *nls_codepage, |
1142 | int remap) | |
1da177e4 LT |
1143 | { |
1144 | unsigned char *referrals = NULL; | |
1145 | unsigned int num_referrals; | |
1146 | int rc = 0; | |
1147 | ||
1148 | rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage, | |
737b758c | 1149 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1150 | |
1151 | /* BB Add in code to: if valid refrl, if not ip address contact | |
1152 | the helper that resolves tcp names, mount to it, try to | |
1153 | tcon to it unmount it if fail */ | |
1154 | ||
1155 | if(referrals) | |
1156 | kfree(referrals); | |
1157 | ||
1158 | return rc; | |
1159 | } | |
1160 | ||
1161 | int | |
1162 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
1163 | const char *old_path, const struct nls_table *nls_codepage, | |
737b758c SF |
1164 | unsigned int *pnum_referrals, |
1165 | unsigned char ** preferrals, int remap) | |
1da177e4 LT |
1166 | { |
1167 | char *temp_unc; | |
1168 | int rc = 0; | |
1169 | ||
1170 | *pnum_referrals = 0; | |
1171 | ||
1172 | if (pSesInfo->ipc_tid == 0) { | |
1173 | temp_unc = kmalloc(2 /* for slashes */ + | |
1174 | strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2) | |
1175 | + 1 + 4 /* slash IPC$ */ + 2, | |
1176 | GFP_KERNEL); | |
1177 | if (temp_unc == NULL) | |
1178 | return -ENOMEM; | |
1179 | temp_unc[0] = '\\'; | |
1180 | temp_unc[1] = '\\'; | |
1181 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1182 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1183 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1184 | cFYI(1, | |
1185 | ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid)); | |
1186 | kfree(temp_unc); | |
1187 | } | |
1188 | if (rc == 0) | |
1189 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1190 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1191 | |
1192 | return rc; | |
1193 | } | |
1194 | ||
1195 | /* See RFC1001 section 14 on representation of Netbios names */ | |
1196 | static void rfc1002mangle(char * target,char * source, unsigned int length) | |
1197 | { | |
1198 | unsigned int i,j; | |
1199 | ||
1200 | for(i=0,j=0;i<(length);i++) { | |
1201 | /* mask a nibble at a time and encode */ | |
1202 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1203 | target[j+1] = 'A' + (0x0F & source[i]); | |
1204 | j+=2; | |
1205 | } | |
1206 | ||
1207 | } | |
1208 | ||
1209 | ||
1210 | static int | |
1211 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, | |
1212 | char * netbios_name) | |
1213 | { | |
1214 | int rc = 0; | |
1215 | int connected = 0; | |
1216 | __be16 orig_port = 0; | |
1217 | ||
1218 | if(*csocket == NULL) { | |
1219 | rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1220 | if (rc < 0) { | |
1221 | cERROR(1, ("Error %d creating socket",rc)); | |
1222 | *csocket = NULL; | |
1223 | return rc; | |
1224 | } else { | |
1225 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1226 | cFYI(1,("Socket created")); | |
1227 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | psin_server->sin_family = AF_INET; | |
1232 | if(psin_server->sin_port) { /* user overrode default port */ | |
1233 | rc = (*csocket)->ops->connect(*csocket, | |
1234 | (struct sockaddr *) psin_server, | |
1235 | sizeof (struct sockaddr_in),0); | |
1236 | if (rc >= 0) | |
1237 | connected = 1; | |
1238 | } | |
1239 | ||
1240 | if(!connected) { | |
1241 | /* save original port so we can retry user specified port | |
1242 | later if fall back ports fail this time */ | |
1243 | orig_port = psin_server->sin_port; | |
1244 | ||
1245 | /* do not retry on the same port we just failed on */ | |
1246 | if(psin_server->sin_port != htons(CIFS_PORT)) { | |
1247 | psin_server->sin_port = htons(CIFS_PORT); | |
1248 | ||
1249 | rc = (*csocket)->ops->connect(*csocket, | |
1250 | (struct sockaddr *) psin_server, | |
1251 | sizeof (struct sockaddr_in),0); | |
1252 | if (rc >= 0) | |
1253 | connected = 1; | |
1254 | } | |
1255 | } | |
1256 | if (!connected) { | |
1257 | psin_server->sin_port = htons(RFC1001_PORT); | |
1258 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1259 | psin_server, sizeof (struct sockaddr_in),0); | |
1260 | if (rc >= 0) | |
1261 | connected = 1; | |
1262 | } | |
1263 | ||
1264 | /* give up here - unless we want to retry on different | |
1265 | protocol families some day */ | |
1266 | if (!connected) { | |
1267 | if(orig_port) | |
1268 | psin_server->sin_port = orig_port; | |
1269 | cFYI(1,("Error %d connecting to server via ipv4",rc)); | |
1270 | sock_release(*csocket); | |
1271 | *csocket = NULL; | |
1272 | return rc; | |
1273 | } | |
1274 | /* Eventually check for other socket options to change from | |
1275 | the default. sock_setsockopt not used because it expects | |
1276 | user space buffer */ | |
1277 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1278 | ||
1279 | /* send RFC1001 sessinit */ | |
1280 | ||
1281 | if(psin_server->sin_port == htons(RFC1001_PORT)) { | |
1282 | /* some servers require RFC1001 sessinit before sending | |
1283 | negprot - BB check reconnection in case where second | |
1284 | sessinit is sent but no second negprot */ | |
1285 | struct rfc1002_session_packet * ses_init_buf; | |
1286 | struct smb_hdr * smb_buf; | |
433dc24f | 1287 | ses_init_buf = kcalloc(1, sizeof(struct rfc1002_session_packet), GFP_KERNEL); |
1da177e4 LT |
1288 | if(ses_init_buf) { |
1289 | ses_init_buf->trailer.session_req.called_len = 32; | |
1290 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1291 | DEFAULT_CIFS_CALLED_NAME,16); | |
1292 | ses_init_buf->trailer.session_req.calling_len = 32; | |
1293 | /* calling name ends in null (byte 16) from old smb | |
1294 | convention. */ | |
1295 | if(netbios_name && (netbios_name[0] !=0)) { | |
1296 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1297 | netbios_name,16); | |
1298 | } else { | |
1299 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1300 | "LINUX_CIFS_CLNT",16); | |
1301 | } | |
1302 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1303 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1304 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1305 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1306 | smb_buf->smb_buf_length = 0x81000044; | |
1307 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1308 | (struct sockaddr *)psin_server); | |
1309 | kfree(ses_init_buf); | |
1310 | } | |
1311 | /* else the negprot may still work without this | |
1312 | even though malloc failed */ | |
1313 | ||
1314 | } | |
1315 | ||
1316 | return rc; | |
1317 | } | |
1318 | ||
1319 | static int | |
1320 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1321 | { | |
1322 | int rc = 0; | |
1323 | int connected = 0; | |
1324 | __be16 orig_port = 0; | |
1325 | ||
1326 | if(*csocket == NULL) { | |
1327 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1328 | if (rc < 0) { | |
1329 | cERROR(1, ("Error %d creating ipv6 socket",rc)); | |
1330 | *csocket = NULL; | |
1331 | return rc; | |
1332 | } else { | |
1333 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1334 | cFYI(1,("ipv6 Socket created")); | |
1335 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1336 | } | |
1337 | } | |
1338 | ||
1339 | psin_server->sin6_family = AF_INET6; | |
1340 | ||
1341 | if(psin_server->sin6_port) { /* user overrode default port */ | |
1342 | rc = (*csocket)->ops->connect(*csocket, | |
1343 | (struct sockaddr *) psin_server, | |
1344 | sizeof (struct sockaddr_in6),0); | |
1345 | if (rc >= 0) | |
1346 | connected = 1; | |
1347 | } | |
1348 | ||
1349 | if(!connected) { | |
1350 | /* save original port so we can retry user specified port | |
1351 | later if fall back ports fail this time */ | |
1352 | ||
1353 | orig_port = psin_server->sin6_port; | |
1354 | /* do not retry on the same port we just failed on */ | |
1355 | if(psin_server->sin6_port != htons(CIFS_PORT)) { | |
1356 | psin_server->sin6_port = htons(CIFS_PORT); | |
1357 | ||
1358 | rc = (*csocket)->ops->connect(*csocket, | |
1359 | (struct sockaddr *) psin_server, | |
1360 | sizeof (struct sockaddr_in6),0); | |
1361 | if (rc >= 0) | |
1362 | connected = 1; | |
1363 | } | |
1364 | } | |
1365 | if (!connected) { | |
1366 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1367 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1368 | psin_server, sizeof (struct sockaddr_in6),0); | |
1369 | if (rc >= 0) | |
1370 | connected = 1; | |
1371 | } | |
1372 | ||
1373 | /* give up here - unless we want to retry on different | |
1374 | protocol families some day */ | |
1375 | if (!connected) { | |
1376 | if(orig_port) | |
1377 | psin_server->sin6_port = orig_port; | |
1378 | cFYI(1,("Error %d connecting to server via ipv6",rc)); | |
1379 | sock_release(*csocket); | |
1380 | *csocket = NULL; | |
1381 | return rc; | |
1382 | } | |
1383 | /* Eventually check for other socket options to change from | |
1384 | the default. sock_setsockopt not used because it expects | |
1385 | user space buffer */ | |
1386 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1387 | ||
1388 | return rc; | |
1389 | } | |
1390 | ||
1391 | int | |
1392 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1393 | char *mount_data, const char *devname) | |
1394 | { | |
1395 | int rc = 0; | |
1396 | int xid; | |
1397 | int address_type = AF_INET; | |
1398 | struct socket *csocket = NULL; | |
1399 | struct sockaddr_in sin_server; | |
1400 | struct sockaddr_in6 sin_server6; | |
1401 | struct smb_vol volume_info; | |
1402 | struct cifsSesInfo *pSesInfo = NULL; | |
1403 | struct cifsSesInfo *existingCifsSes = NULL; | |
1404 | struct cifsTconInfo *tcon = NULL; | |
1405 | struct TCP_Server_Info *srvTcp = NULL; | |
1406 | ||
1407 | xid = GetXid(); | |
1408 | ||
1409 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
1410 | ||
1411 | memset(&volume_info,0,sizeof(struct smb_vol)); | |
1412 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { | |
1413 | if(volume_info.UNC) | |
1414 | kfree(volume_info.UNC); | |
1415 | if(volume_info.password) | |
1416 | kfree(volume_info.password); | |
1417 | FreeXid(xid); | |
1418 | return -EINVAL; | |
1419 | } | |
1420 | ||
1421 | if (volume_info.username) { | |
1422 | /* BB fixme parse for domain name here */ | |
1423 | cFYI(1, ("Username: %s ", volume_info.username)); | |
1424 | ||
1425 | } else { | |
1426 | cifserror("No username specified "); | |
1427 | /* In userspace mount helper we can get user name from alternate | |
1428 | locations such as env variables and files on disk */ | |
1429 | if(volume_info.UNC) | |
1430 | kfree(volume_info.UNC); | |
1431 | if(volume_info.password) | |
1432 | kfree(volume_info.password); | |
1433 | FreeXid(xid); | |
1434 | return -EINVAL; | |
1435 | } | |
1436 | ||
1437 | if (volume_info.UNCip && volume_info.UNC) { | |
1438 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr); | |
1439 | ||
1440 | if(rc <= 0) { | |
1441 | /* not ipv4 address, try ipv6 */ | |
1442 | rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u); | |
1443 | if(rc > 0) | |
1444 | address_type = AF_INET6; | |
1445 | } else { | |
1446 | address_type = AF_INET; | |
1447 | } | |
1448 | ||
1449 | if(rc <= 0) { | |
1450 | /* we failed translating address */ | |
1451 | if(volume_info.UNC) | |
1452 | kfree(volume_info.UNC); | |
1453 | if(volume_info.password) | |
1454 | kfree(volume_info.password); | |
1455 | FreeXid(xid); | |
1456 | return -EINVAL; | |
1457 | } | |
1458 | ||
1459 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1460 | /* success */ | |
1461 | rc = 0; | |
1462 | } else if (volume_info.UNCip){ | |
1463 | /* BB using ip addr as server name connect to the DFS root below */ | |
1464 | cERROR(1,("Connecting to DFS root not implemented yet")); | |
1465 | if(volume_info.UNC) | |
1466 | kfree(volume_info.UNC); | |
1467 | if(volume_info.password) | |
1468 | kfree(volume_info.password); | |
1469 | FreeXid(xid); | |
1470 | return -EINVAL; | |
1471 | } else /* which servers DFS root would we conect to */ { | |
1472 | cERROR(1, | |
1473 | ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified ")); | |
1474 | if(volume_info.UNC) | |
1475 | kfree(volume_info.UNC); | |
1476 | if(volume_info.password) | |
1477 | kfree(volume_info.password); | |
1478 | FreeXid(xid); | |
1479 | return -EINVAL; | |
1480 | } | |
1481 | ||
1482 | /* this is needed for ASCII cp to Unicode converts */ | |
1483 | if(volume_info.iocharset == NULL) { | |
1484 | cifs_sb->local_nls = load_nls_default(); | |
1485 | /* load_nls_default can not return null */ | |
1486 | } else { | |
1487 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
1488 | if(cifs_sb->local_nls == NULL) { | |
1489 | cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset)); | |
1490 | if(volume_info.UNC) | |
1491 | kfree(volume_info.UNC); | |
1492 | if(volume_info.password) | |
1493 | kfree(volume_info.password); | |
1494 | FreeXid(xid); | |
1495 | return -ELIBACC; | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | if(address_type == AF_INET) | |
1500 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, | |
1501 | NULL /* no ipv6 addr */, | |
1502 | volume_info.username, &srvTcp); | |
1503 | else if(address_type == AF_INET6) | |
1504 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, | |
1505 | &sin_server6.sin6_addr, | |
1506 | volume_info.username, &srvTcp); | |
1507 | else { | |
1508 | if(volume_info.UNC) | |
1509 | kfree(volume_info.UNC); | |
1510 | if(volume_info.password) | |
1511 | kfree(volume_info.password); | |
1512 | FreeXid(xid); | |
1513 | return -EINVAL; | |
1514 | } | |
1515 | ||
1516 | ||
1517 | if (srvTcp) { | |
1518 | cFYI(1, ("Existing tcp session with server found ")); | |
1519 | } else { /* create socket */ | |
1520 | if(volume_info.port) | |
1521 | sin_server.sin_port = htons(volume_info.port); | |
1522 | else | |
1523 | sin_server.sin_port = 0; | |
1524 | rc = ipv4_connect(&sin_server,&csocket,volume_info.source_rfc1001_name); | |
1525 | if (rc < 0) { | |
1526 | cERROR(1, | |
1527 | ("Error connecting to IPv4 socket. Aborting operation")); | |
1528 | if(csocket != NULL) | |
1529 | sock_release(csocket); | |
1530 | if(volume_info.UNC) | |
1531 | kfree(volume_info.UNC); | |
1532 | if(volume_info.password) | |
1533 | kfree(volume_info.password); | |
1534 | FreeXid(xid); | |
1535 | return rc; | |
1536 | } | |
1537 | ||
1538 | srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); | |
1539 | if (srvTcp == NULL) { | |
1540 | rc = -ENOMEM; | |
1541 | sock_release(csocket); | |
1542 | if(volume_info.UNC) | |
1543 | kfree(volume_info.UNC); | |
1544 | if(volume_info.password) | |
1545 | kfree(volume_info.password); | |
1546 | FreeXid(xid); | |
1547 | return rc; | |
1548 | } else { | |
1549 | memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); | |
1550 | memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in)); | |
1551 | atomic_set(&srvTcp->inFlight,0); | |
1552 | /* BB Add code for ipv6 case too */ | |
1553 | srvTcp->ssocket = csocket; | |
1554 | srvTcp->protocolType = IPV4; | |
1555 | init_waitqueue_head(&srvTcp->response_q); | |
1556 | init_waitqueue_head(&srvTcp->request_q); | |
1557 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1558 | /* at this point we are the only ones with the pointer | |
1559 | to the struct since the kernel thread not created yet | |
1560 | so no need to spinlock this init of tcpStatus */ | |
1561 | srvTcp->tcpStatus = CifsNew; | |
1562 | init_MUTEX(&srvTcp->tcpSem); | |
1563 | rc = (int)kernel_thread((void *)(void *)cifs_demultiplex_thread, srvTcp, | |
1564 | CLONE_FS | CLONE_FILES | CLONE_VM); | |
1565 | if(rc < 0) { | |
1566 | rc = -ENOMEM; | |
1567 | sock_release(csocket); | |
1568 | if(volume_info.UNC) | |
1569 | kfree(volume_info.UNC); | |
1570 | if(volume_info.password) | |
1571 | kfree(volume_info.password); | |
1572 | FreeXid(xid); | |
1573 | return rc; | |
1574 | } else | |
1575 | rc = 0; | |
1576 | memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); | |
ad009ac9 | 1577 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1578 | } |
1579 | } | |
1580 | ||
1581 | if (existingCifsSes) { | |
1582 | pSesInfo = existingCifsSes; | |
1583 | cFYI(1, ("Existing smb sess found ")); | |
1584 | if(volume_info.password) | |
1585 | kfree(volume_info.password); | |
1586 | /* volume_info.UNC freed at end of function */ | |
1587 | } else if (!rc) { | |
1588 | cFYI(1, ("Existing smb sess not found ")); | |
1589 | pSesInfo = sesInfoAlloc(); | |
1590 | if (pSesInfo == NULL) | |
1591 | rc = -ENOMEM; | |
1592 | else { | |
1593 | pSesInfo->server = srvTcp; | |
1594 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1595 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1596 | } | |
1597 | ||
1598 | if (!rc){ | |
1599 | /* volume_info.password freed at unmount */ | |
1600 | if (volume_info.password) | |
1601 | pSesInfo->password = volume_info.password; | |
1602 | if (volume_info.username) | |
1603 | strncpy(pSesInfo->userName, | |
1604 | volume_info.username,MAX_USERNAME_SIZE); | |
1605 | if (volume_info.domainname) | |
1606 | strncpy(pSesInfo->domainName, | |
1607 | volume_info.domainname,MAX_USERNAME_SIZE); | |
1608 | pSesInfo->linux_uid = volume_info.linux_uid; | |
1609 | down(&pSesInfo->sesSem); | |
1610 | rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls); | |
1611 | up(&pSesInfo->sesSem); | |
1612 | if(!rc) | |
1613 | atomic_inc(&srvTcp->socketUseCount); | |
1614 | } else | |
1615 | if(volume_info.password) | |
1616 | kfree(volume_info.password); | |
1617 | } | |
1618 | ||
1619 | /* search for existing tcon to this server share */ | |
1620 | if (!rc) { | |
1621 | if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize)) | |
1622 | cifs_sb->rsize = volume_info.rsize; | |
1623 | else | |
1624 | cifs_sb->rsize = srvTcp->maxBuf - MAX_CIFS_HDR_SIZE; /* default */ | |
1625 | if((volume_info.wsize) && (volume_info.wsize <= CIFSMaxBufSize)) | |
1626 | cifs_sb->wsize = volume_info.wsize; | |
1627 | else | |
1628 | cifs_sb->wsize = CIFSMaxBufSize; /* default */ | |
1629 | if(cifs_sb->rsize < PAGE_CACHE_SIZE) { | |
1630 | cifs_sb->rsize = PAGE_CACHE_SIZE; | |
1631 | cERROR(1,("Attempt to set readsize for mount to less than one page (4096)")); | |
1632 | } | |
1633 | cifs_sb->mnt_uid = volume_info.linux_uid; | |
1634 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
1635 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
1636 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
1637 | cFYI(1,("file mode: 0x%x dir mode: 0x%x",cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode)); | |
1638 | ||
1639 | if(volume_info.noperm) | |
1640 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
1641 | if(volume_info.setuids) | |
1642 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
1643 | if(volume_info.server_ino) | |
1644 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
6a0b4824 SF |
1645 | if(volume_info.remap) |
1646 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
1da177e4 LT |
1647 | if(volume_info.no_xattr) |
1648 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
1649 | if(volume_info.direct_io) { | |
1650 | cERROR(1,("mounting share using direct i/o")); | |
1651 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; | |
1652 | } | |
1653 | ||
1654 | tcon = | |
1655 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
1656 | volume_info.username); | |
1657 | if (tcon) { | |
1658 | cFYI(1, ("Found match on UNC path ")); | |
1659 | /* we can have only one retry value for a connection | |
1660 | to a share so for resources mounted more than once | |
1661 | to the same server share the last value passed in | |
1662 | for the retry flag is used */ | |
1663 | tcon->retry = volume_info.retry; | |
1664 | } else { | |
1665 | tcon = tconInfoAlloc(); | |
1666 | if (tcon == NULL) | |
1667 | rc = -ENOMEM; | |
1668 | else { | |
1669 | /* check for null share name ie connect to dfs root */ | |
1670 | ||
1671 | /* BB check if this works for exactly length three strings */ | |
1672 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) | |
1673 | && (strchr(volume_info.UNC + 3, '/') == | |
1674 | NULL)) { | |
737b758c SF |
1675 | rc = connect_to_dfs_path(xid, pSesInfo, |
1676 | "", cifs_sb->local_nls, | |
1677 | cifs_sb->mnt_cifs_flags & | |
1678 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
1679 | if(volume_info.UNC) |
1680 | kfree(volume_info.UNC); | |
1681 | FreeXid(xid); | |
1682 | return -ENODEV; | |
1683 | } else { | |
1684 | rc = CIFSTCon(xid, pSesInfo, | |
1685 | volume_info.UNC, | |
1686 | tcon, cifs_sb->local_nls); | |
1687 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
1688 | } | |
1689 | if (!rc) { | |
1690 | atomic_inc(&pSesInfo->inUse); | |
1691 | tcon->retry = volume_info.retry; | |
1692 | } | |
1693 | } | |
1694 | } | |
1695 | } | |
1696 | if(pSesInfo) { | |
1697 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { | |
1698 | sb->s_maxbytes = (u64) 1 << 63; | |
1699 | } else | |
1700 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
1701 | } | |
1702 | ||
1703 | sb->s_time_gran = 100; | |
1704 | ||
1705 | /* on error free sesinfo and tcon struct if needed */ | |
1706 | if (rc) { | |
1707 | /* if session setup failed, use count is zero but | |
1708 | we still need to free cifsd thread */ | |
1709 | if(atomic_read(&srvTcp->socketUseCount) == 0) { | |
1710 | spin_lock(&GlobalMid_Lock); | |
1711 | srvTcp->tcpStatus = CifsExiting; | |
1712 | spin_unlock(&GlobalMid_Lock); | |
1713 | if(srvTcp->tsk) | |
1714 | send_sig(SIGKILL,srvTcp->tsk,1); | |
1715 | } | |
1716 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
1717 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
1718 | tconInfoFree(tcon); | |
1719 | if (existingCifsSes == NULL) { | |
1720 | if (pSesInfo) { | |
1721 | if ((pSesInfo->server) && | |
1722 | (pSesInfo->status == CifsGood)) { | |
1723 | int temp_rc; | |
1724 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
1725 | /* if the socketUseCount is now zero */ | |
1726 | if((temp_rc == -ESHUTDOWN) && | |
1727 | (pSesInfo->server->tsk)) | |
1728 | send_sig(SIGKILL,pSesInfo->server->tsk,1); | |
1729 | } else | |
1730 | cFYI(1, ("No session or bad tcon")); | |
1731 | sesInfoFree(pSesInfo); | |
1732 | /* pSesInfo = NULL; */ | |
1733 | } | |
1734 | } | |
1735 | } else { | |
1736 | atomic_inc(&tcon->useCount); | |
1737 | cifs_sb->tcon = tcon; | |
1738 | tcon->ses = pSesInfo; | |
1739 | ||
1740 | /* do not care if following two calls succeed - informational only */ | |
737b758c SF |
1741 | CIFSSMBQFSDeviceInfo(xid, tcon); |
1742 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
1da177e4 | 1743 | if (tcon->ses->capabilities & CAP_UNIX) { |
737b758c | 1744 | if(!CIFSSMBQFSUnixInfo(xid, tcon)) { |
1da177e4 LT |
1745 | if(!volume_info.no_psx_acl) { |
1746 | if(CIFS_UNIX_POSIX_ACL_CAP & | |
1747 | le64_to_cpu(tcon->fsUnixInfo.Capability)) | |
1748 | cFYI(1,("server negotiated posix acl support")); | |
1749 | sb->s_flags |= MS_POSIXACL; | |
1750 | } | |
1751 | } | |
1752 | } | |
1753 | } | |
1754 | ||
1755 | /* volume_info.password is freed above when existing session found | |
1756 | (in which case it is not needed anymore) but when new sesion is created | |
1757 | the password ptr is put in the new session structure (in which case the | |
1758 | password will be freed at unmount time) */ | |
1759 | if(volume_info.UNC) | |
1760 | kfree(volume_info.UNC); | |
1761 | FreeXid(xid); | |
1762 | return rc; | |
1763 | } | |
1764 | ||
1765 | static int | |
1766 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
1767 | char session_key[CIFS_SESSION_KEY_SIZE], | |
1768 | const struct nls_table *nls_codepage) | |
1769 | { | |
1770 | struct smb_hdr *smb_buffer; | |
1771 | struct smb_hdr *smb_buffer_response; | |
1772 | SESSION_SETUP_ANDX *pSMB; | |
1773 | SESSION_SETUP_ANDX *pSMBr; | |
1774 | char *bcc_ptr; | |
1775 | char *user; | |
1776 | char *domain; | |
1777 | int rc = 0; | |
1778 | int remaining_words = 0; | |
1779 | int bytes_returned = 0; | |
1780 | int len; | |
1781 | __u32 capabilities; | |
1782 | __u16 count; | |
1783 | ||
1784 | cFYI(1, ("In sesssetup ")); | |
1785 | if(ses == NULL) | |
1786 | return -EINVAL; | |
1787 | user = ses->userName; | |
1788 | domain = ses->domainName; | |
1789 | smb_buffer = cifs_buf_get(); | |
1790 | if (smb_buffer == NULL) { | |
1791 | return -ENOMEM; | |
1792 | } | |
1793 | smb_buffer_response = smb_buffer; | |
1794 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
1795 | ||
1796 | /* send SMBsessionSetup here */ | |
1797 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
1798 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
1799 | ||
1800 | pSMB->req_no_secext.AndXCommand = 0xFF; | |
1801 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
1802 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
1803 | ||
1804 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1805 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1806 | ||
1807 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
1808 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
1809 | if (ses->capabilities & CAP_UNICODE) { | |
1810 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
1811 | capabilities |= CAP_UNICODE; | |
1812 | } | |
1813 | if (ses->capabilities & CAP_STATUS32) { | |
1814 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
1815 | capabilities |= CAP_STATUS32; | |
1816 | } | |
1817 | if (ses->capabilities & CAP_DFS) { | |
1818 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
1819 | capabilities |= CAP_DFS; | |
1820 | } | |
1821 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
1822 | ||
1823 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
1824 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
1825 | ||
1826 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
1827 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
1828 | bcc_ptr = pByteArea(smb_buffer); | |
1829 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE); | |
1830 | bcc_ptr += CIFS_SESSION_KEY_SIZE; | |
1831 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE); | |
1832 | bcc_ptr += CIFS_SESSION_KEY_SIZE; | |
1833 | ||
1834 | if (ses->capabilities & CAP_UNICODE) { | |
1835 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
1836 | *bcc_ptr = 0; | |
1837 | bcc_ptr++; | |
1838 | } | |
1839 | if(user == NULL) | |
1840 | bytes_returned = 0; /* skill null user */ | |
1841 | else | |
1842 | bytes_returned = | |
1843 | cifs_strtoUCS((wchar_t *) bcc_ptr, user, 100, | |
1844 | nls_codepage); | |
1845 | /* convert number of 16 bit words to bytes */ | |
1846 | bcc_ptr += 2 * bytes_returned; | |
1847 | bcc_ptr += 2; /* trailing null */ | |
1848 | if (domain == NULL) | |
1849 | bytes_returned = | |
1850 | cifs_strtoUCS((wchar_t *) bcc_ptr, | |
1851 | "CIFS_LINUX_DOM", 32, nls_codepage); | |
1852 | else | |
1853 | bytes_returned = | |
1854 | cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64, | |
1855 | nls_codepage); | |
1856 | bcc_ptr += 2 * bytes_returned; | |
1857 | bcc_ptr += 2; | |
1858 | bytes_returned = | |
1859 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
1860 | 32, nls_codepage); | |
1861 | bcc_ptr += 2 * bytes_returned; | |
1862 | bytes_returned = | |
1863 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, | |
1864 | 32, nls_codepage); | |
1865 | bcc_ptr += 2 * bytes_returned; | |
1866 | bcc_ptr += 2; | |
1867 | bytes_returned = | |
1868 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
1869 | 64, nls_codepage); | |
1870 | bcc_ptr += 2 * bytes_returned; | |
1871 | bcc_ptr += 2; | |
1872 | } else { | |
1873 | if(user != NULL) { | |
1874 | strncpy(bcc_ptr, user, 200); | |
1875 | bcc_ptr += strnlen(user, 200); | |
1876 | } | |
1877 | *bcc_ptr = 0; | |
1878 | bcc_ptr++; | |
1879 | if (domain == NULL) { | |
1880 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
1881 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
1882 | } else { | |
1883 | strncpy(bcc_ptr, domain, 64); | |
1884 | bcc_ptr += strnlen(domain, 64); | |
1885 | *bcc_ptr = 0; | |
1886 | bcc_ptr++; | |
1887 | } | |
1888 | strcpy(bcc_ptr, "Linux version "); | |
1889 | bcc_ptr += strlen("Linux version "); | |
1890 | strcpy(bcc_ptr, system_utsname.release); | |
1891 | bcc_ptr += strlen(system_utsname.release) + 1; | |
1892 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
1893 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
1894 | } | |
1895 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
1896 | smb_buffer->smb_buf_length += count; | |
1897 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
1898 | ||
1899 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
1900 | &bytes_returned, 1); | |
1901 | if (rc) { | |
1902 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
1903 | } else if ((smb_buffer_response->WordCount == 3) | |
1904 | || (smb_buffer_response->WordCount == 4)) { | |
1905 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
1906 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
1907 | if (action & GUEST_LOGIN) | |
1908 | cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */ | |
1909 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
1910 | cFYI(1, ("UID = %d ", ses->Suid)); | |
1911 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1912 | bcc_ptr = pByteArea(smb_buffer_response); | |
1913 | if ((pSMBr->resp.hdr.WordCount == 3) | |
1914 | || ((pSMBr->resp.hdr.WordCount == 4) | |
1915 | && (blob_len < pSMBr->resp.ByteCount))) { | |
1916 | if (pSMBr->resp.hdr.WordCount == 4) | |
1917 | bcc_ptr += blob_len; | |
1918 | ||
1919 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
1920 | if ((long) (bcc_ptr) % 2) { | |
1921 | remaining_words = | |
1922 | (BCC(smb_buffer_response) - 1) /2; | |
1923 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
1924 | } else { | |
1925 | remaining_words = | |
1926 | BCC(smb_buffer_response) / 2; | |
1927 | } | |
1928 | len = | |
1929 | UniStrnlen((wchar_t *) bcc_ptr, | |
1930 | remaining_words - 1); | |
1931 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
1932 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
1933 | terminating last Unicode string in response */ | |
433dc24f SF |
1934 | ses->serverOS = kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1935 | if(ses->serverOS == NULL) | |
1936 | goto sesssetup_nomem; | |
1da177e4 LT |
1937 | cifs_strfromUCS_le(ses->serverOS, |
1938 | (wchar_t *)bcc_ptr, len,nls_codepage); | |
1939 | bcc_ptr += 2 * (len + 1); | |
1940 | remaining_words -= len + 1; | |
1941 | ses->serverOS[2 * len] = 0; | |
1942 | ses->serverOS[1 + (2 * len)] = 0; | |
1943 | if (remaining_words > 0) { | |
1944 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
1945 | remaining_words-1); | |
433dc24f SF |
1946 | ses->serverNOS = kcalloc(1, 2 * (len + 1),GFP_KERNEL); |
1947 | if(ses->serverNOS == NULL) | |
1948 | goto sesssetup_nomem; | |
1da177e4 LT |
1949 | cifs_strfromUCS_le(ses->serverNOS, |
1950 | (wchar_t *)bcc_ptr,len,nls_codepage); | |
1951 | bcc_ptr += 2 * (len + 1); | |
1952 | ses->serverNOS[2 * len] = 0; | |
1953 | ses->serverNOS[1 + (2 * len)] = 0; | |
1954 | if(strncmp(ses->serverNOS, | |
1955 | "NT LAN Manager 4",16) == 0) { | |
1956 | cFYI(1,("NT4 server")); | |
1957 | ses->flags |= CIFS_SES_NT4; | |
1958 | } | |
1959 | remaining_words -= len + 1; | |
1960 | if (remaining_words > 0) { | |
433dc24f | 1961 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 LT |
1962 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
1963 | ses->serverDomain = | |
433dc24f SF |
1964 | kcalloc(1, 2*(len+1),GFP_KERNEL); |
1965 | if(ses->serverDomain == NULL) | |
1966 | goto sesssetup_nomem; | |
1da177e4 LT |
1967 | cifs_strfromUCS_le(ses->serverDomain, |
1968 | (wchar_t *)bcc_ptr,len,nls_codepage); | |
1969 | bcc_ptr += 2 * (len + 1); | |
1970 | ses->serverDomain[2*len] = 0; | |
1971 | ses->serverDomain[1+(2*len)] = 0; | |
1972 | } /* else no more room so create dummy domain string */ | |
1973 | else | |
433dc24f SF |
1974 | ses->serverDomain = |
1975 | kcalloc(1, 2, GFP_KERNEL); | |
1da177e4 | 1976 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
1977 | /* if these kcallocs fail not much we |
1978 | can do, but better to not fail the | |
1979 | sesssetup itself */ | |
1da177e4 | 1980 | ses->serverDomain = |
433dc24f | 1981 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 | 1982 | ses->serverNOS = |
433dc24f | 1983 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 LT |
1984 | } |
1985 | } else { /* ASCII */ | |
1986 | len = strnlen(bcc_ptr, 1024); | |
1987 | if (((long) bcc_ptr + len) - (long) | |
1988 | pByteArea(smb_buffer_response) | |
1989 | <= BCC(smb_buffer_response)) { | |
433dc24f SF |
1990 | ses->serverOS = kcalloc(1, len + 1,GFP_KERNEL); |
1991 | if(ses->serverOS == NULL) | |
1992 | goto sesssetup_nomem; | |
1da177e4 LT |
1993 | strncpy(ses->serverOS,bcc_ptr, len); |
1994 | ||
1995 | bcc_ptr += len; | |
1996 | bcc_ptr[0] = 0; /* null terminate the string */ | |
1997 | bcc_ptr++; | |
1998 | ||
1999 | len = strnlen(bcc_ptr, 1024); | |
433dc24f SF |
2000 | ses->serverNOS = kcalloc(1, len + 1,GFP_KERNEL); |
2001 | if(ses->serverNOS == NULL) | |
2002 | goto sesssetup_nomem; | |
1da177e4 LT |
2003 | strncpy(ses->serverNOS, bcc_ptr, len); |
2004 | bcc_ptr += len; | |
2005 | bcc_ptr[0] = 0; | |
2006 | bcc_ptr++; | |
2007 | ||
2008 | len = strnlen(bcc_ptr, 1024); | |
433dc24f SF |
2009 | ses->serverDomain = kcalloc(1, len + 1,GFP_KERNEL); |
2010 | if(ses->serverDomain == NULL) | |
2011 | goto sesssetup_nomem; | |
1da177e4 LT |
2012 | strncpy(ses->serverDomain, bcc_ptr, len); |
2013 | bcc_ptr += len; | |
2014 | bcc_ptr[0] = 0; | |
2015 | bcc_ptr++; | |
2016 | } else | |
2017 | cFYI(1, | |
2018 | ("Variable field of length %d extends beyond end of smb ", | |
2019 | len)); | |
2020 | } | |
2021 | } else { | |
2022 | cERROR(1, | |
2023 | (" Security Blob Length extends beyond end of SMB")); | |
2024 | } | |
2025 | } else { | |
2026 | cERROR(1, | |
2027 | (" Invalid Word count %d: ", | |
2028 | smb_buffer_response->WordCount)); | |
2029 | rc = -EIO; | |
2030 | } | |
433dc24f SF |
2031 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2032 | since that could make reconnection harder, and | |
2033 | reconnection might be needed to free memory */ | |
1da177e4 LT |
2034 | if (smb_buffer) |
2035 | cifs_buf_release(smb_buffer); | |
2036 | ||
2037 | return rc; | |
2038 | } | |
2039 | ||
2040 | static int | |
2041 | CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2042 | char *SecurityBlob,int SecurityBlobLength, | |
2043 | const struct nls_table *nls_codepage) | |
2044 | { | |
2045 | struct smb_hdr *smb_buffer; | |
2046 | struct smb_hdr *smb_buffer_response; | |
2047 | SESSION_SETUP_ANDX *pSMB; | |
2048 | SESSION_SETUP_ANDX *pSMBr; | |
2049 | char *bcc_ptr; | |
2050 | char *user; | |
2051 | char *domain; | |
2052 | int rc = 0; | |
2053 | int remaining_words = 0; | |
2054 | int bytes_returned = 0; | |
2055 | int len; | |
2056 | __u32 capabilities; | |
2057 | __u16 count; | |
2058 | ||
2059 | cFYI(1, ("In spnego sesssetup ")); | |
2060 | if(ses == NULL) | |
2061 | return -EINVAL; | |
2062 | user = ses->userName; | |
2063 | domain = ses->domainName; | |
2064 | ||
2065 | smb_buffer = cifs_buf_get(); | |
2066 | if (smb_buffer == NULL) { | |
2067 | return -ENOMEM; | |
2068 | } | |
2069 | smb_buffer_response = smb_buffer; | |
2070 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2071 | ||
2072 | /* send SMBsessionSetup here */ | |
2073 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2074 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
2075 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2076 | pSMB->req.AndXCommand = 0xFF; | |
2077 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2078 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2079 | ||
2080 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2081 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2082 | ||
2083 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2084 | CAP_EXTENDED_SECURITY; | |
2085 | if (ses->capabilities & CAP_UNICODE) { | |
2086 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2087 | capabilities |= CAP_UNICODE; | |
2088 | } | |
2089 | if (ses->capabilities & CAP_STATUS32) { | |
2090 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2091 | capabilities |= CAP_STATUS32; | |
2092 | } | |
2093 | if (ses->capabilities & CAP_DFS) { | |
2094 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2095 | capabilities |= CAP_DFS; | |
2096 | } | |
2097 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2098 | ||
2099 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2100 | bcc_ptr = pByteArea(smb_buffer); | |
2101 | memcpy(bcc_ptr, SecurityBlob, SecurityBlobLength); | |
2102 | bcc_ptr += SecurityBlobLength; | |
2103 | ||
2104 | if (ses->capabilities & CAP_UNICODE) { | |
2105 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode strings */ | |
2106 | *bcc_ptr = 0; | |
2107 | bcc_ptr++; | |
2108 | } | |
2109 | bytes_returned = | |
2110 | cifs_strtoUCS((wchar_t *) bcc_ptr, user, 100, nls_codepage); | |
2111 | bcc_ptr += 2 * bytes_returned; /* convert num of 16 bit words to bytes */ | |
2112 | bcc_ptr += 2; /* trailing null */ | |
2113 | if (domain == NULL) | |
2114 | bytes_returned = | |
2115 | cifs_strtoUCS((wchar_t *) bcc_ptr, | |
2116 | "CIFS_LINUX_DOM", 32, nls_codepage); | |
2117 | else | |
2118 | bytes_returned = | |
2119 | cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64, | |
2120 | nls_codepage); | |
2121 | bcc_ptr += 2 * bytes_returned; | |
2122 | bcc_ptr += 2; | |
2123 | bytes_returned = | |
2124 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
2125 | 32, nls_codepage); | |
2126 | bcc_ptr += 2 * bytes_returned; | |
2127 | bytes_returned = | |
2128 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32, | |
2129 | nls_codepage); | |
2130 | bcc_ptr += 2 * bytes_returned; | |
2131 | bcc_ptr += 2; | |
2132 | bytes_returned = | |
2133 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
2134 | 64, nls_codepage); | |
2135 | bcc_ptr += 2 * bytes_returned; | |
2136 | bcc_ptr += 2; | |
2137 | } else { | |
2138 | strncpy(bcc_ptr, user, 200); | |
2139 | bcc_ptr += strnlen(user, 200); | |
2140 | *bcc_ptr = 0; | |
2141 | bcc_ptr++; | |
2142 | if (domain == NULL) { | |
2143 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2144 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2145 | } else { | |
2146 | strncpy(bcc_ptr, domain, 64); | |
2147 | bcc_ptr += strnlen(domain, 64); | |
2148 | *bcc_ptr = 0; | |
2149 | bcc_ptr++; | |
2150 | } | |
2151 | strcpy(bcc_ptr, "Linux version "); | |
2152 | bcc_ptr += strlen("Linux version "); | |
2153 | strcpy(bcc_ptr, system_utsname.release); | |
2154 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2155 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2156 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2157 | } | |
2158 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2159 | smb_buffer->smb_buf_length += count; | |
2160 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2161 | ||
2162 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2163 | &bytes_returned, 1); | |
2164 | if (rc) { | |
2165 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2166 | } else if ((smb_buffer_response->WordCount == 3) | |
2167 | || (smb_buffer_response->WordCount == 4)) { | |
2168 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2169 | __u16 blob_len = | |
2170 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2171 | if (action & GUEST_LOGIN) | |
2172 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
2173 | if (ses) { | |
2174 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
2175 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2176 | bcc_ptr = pByteArea(smb_buffer_response); /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2177 | ||
2178 | /* BB Fix below to make endian neutral !! */ | |
2179 | ||
2180 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2181 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2182 | && (blob_len < | |
2183 | pSMBr->resp.ByteCount))) { | |
2184 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2185 | bcc_ptr += | |
2186 | blob_len; | |
2187 | cFYI(1, | |
2188 | ("Security Blob Length %d ", | |
2189 | blob_len)); | |
2190 | } | |
2191 | ||
2192 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2193 | if ((long) (bcc_ptr) % 2) { | |
2194 | remaining_words = | |
2195 | (BCC(smb_buffer_response) | |
2196 | - 1) / 2; | |
2197 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2198 | } else { | |
2199 | remaining_words = | |
2200 | BCC | |
2201 | (smb_buffer_response) / 2; | |
2202 | } | |
2203 | len = | |
2204 | UniStrnlen((wchar_t *) bcc_ptr, | |
2205 | remaining_words - 1); | |
2206 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2207 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2208 | terminating last Unicode string in response */ | |
2209 | ses->serverOS = | |
433dc24f | 2210 | kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1da177e4 LT |
2211 | cifs_strfromUCS_le(ses->serverOS, |
2212 | (wchar_t *) | |
2213 | bcc_ptr, len, | |
2214 | nls_codepage); | |
2215 | bcc_ptr += 2 * (len + 1); | |
2216 | remaining_words -= len + 1; | |
2217 | ses->serverOS[2 * len] = 0; | |
2218 | ses->serverOS[1 + (2 * len)] = 0; | |
2219 | if (remaining_words > 0) { | |
2220 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2221 | remaining_words | |
2222 | - 1); | |
2223 | ses->serverNOS = | |
433dc24f | 2224 | kcalloc(1, 2 * (len + 1), |
1da177e4 LT |
2225 | GFP_KERNEL); |
2226 | cifs_strfromUCS_le(ses->serverNOS, | |
2227 | (wchar_t *)bcc_ptr, | |
2228 | len, | |
2229 | nls_codepage); | |
2230 | bcc_ptr += 2 * (len + 1); | |
2231 | ses->serverNOS[2 * len] = 0; | |
2232 | ses->serverNOS[1 + (2 * len)] = 0; | |
2233 | remaining_words -= len + 1; | |
2234 | if (remaining_words > 0) { | |
2235 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2236 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
433dc24f | 2237 | ses->serverDomain = kcalloc(1, 2*(len+1),GFP_KERNEL); |
1da177e4 LT |
2238 | cifs_strfromUCS_le(ses->serverDomain, |
2239 | (wchar_t *)bcc_ptr, | |
2240 | len, | |
2241 | nls_codepage); | |
2242 | bcc_ptr += 2*(len+1); | |
2243 | ses->serverDomain[2*len] = 0; | |
2244 | ses->serverDomain[1+(2*len)] = 0; | |
2245 | } /* else no more room so create dummy domain string */ | |
2246 | else | |
2247 | ses->serverDomain = | |
433dc24f | 2248 | kcalloc(1, 2,GFP_KERNEL); |
1da177e4 | 2249 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2250 | ses->serverDomain = kcalloc(1, 2, GFP_KERNEL); |
2251 | ses->serverNOS = kcalloc(1, 2, GFP_KERNEL); | |
1da177e4 LT |
2252 | } |
2253 | } else { /* ASCII */ | |
2254 | ||
2255 | len = strnlen(bcc_ptr, 1024); | |
2256 | if (((long) bcc_ptr + len) - (long) | |
2257 | pByteArea(smb_buffer_response) | |
2258 | <= BCC(smb_buffer_response)) { | |
433dc24f | 2259 | ses->serverOS = kcalloc(1, len + 1, GFP_KERNEL); |
1da177e4 LT |
2260 | strncpy(ses->serverOS, bcc_ptr, len); |
2261 | ||
2262 | bcc_ptr += len; | |
2263 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2264 | bcc_ptr++; | |
2265 | ||
2266 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 2267 | ses->serverNOS = kcalloc(1, len + 1,GFP_KERNEL); |
1da177e4 LT |
2268 | strncpy(ses->serverNOS, bcc_ptr, len); |
2269 | bcc_ptr += len; | |
2270 | bcc_ptr[0] = 0; | |
2271 | bcc_ptr++; | |
2272 | ||
2273 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 2274 | ses->serverDomain = kcalloc(1, len + 1, GFP_KERNEL); |
1da177e4 LT |
2275 | strncpy(ses->serverDomain, bcc_ptr, len); |
2276 | bcc_ptr += len; | |
2277 | bcc_ptr[0] = 0; | |
2278 | bcc_ptr++; | |
2279 | } else | |
2280 | cFYI(1, | |
2281 | ("Variable field of length %d extends beyond end of smb ", | |
2282 | len)); | |
2283 | } | |
2284 | } else { | |
2285 | cERROR(1, | |
2286 | (" Security Blob Length extends beyond end of SMB")); | |
2287 | } | |
2288 | } else { | |
2289 | cERROR(1, ("No session structure passed in.")); | |
2290 | } | |
2291 | } else { | |
2292 | cERROR(1, | |
2293 | (" Invalid Word count %d: ", | |
2294 | smb_buffer_response->WordCount)); | |
2295 | rc = -EIO; | |
2296 | } | |
2297 | ||
2298 | if (smb_buffer) | |
2299 | cifs_buf_release(smb_buffer); | |
2300 | ||
2301 | return rc; | |
2302 | } | |
2303 | ||
2304 | static int | |
2305 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
2306 | struct cifsSesInfo *ses, int * pNTLMv2_flag, | |
2307 | const struct nls_table *nls_codepage) | |
2308 | { | |
2309 | struct smb_hdr *smb_buffer; | |
2310 | struct smb_hdr *smb_buffer_response; | |
2311 | SESSION_SETUP_ANDX *pSMB; | |
2312 | SESSION_SETUP_ANDX *pSMBr; | |
2313 | char *bcc_ptr; | |
2314 | char *domain; | |
2315 | int rc = 0; | |
2316 | int remaining_words = 0; | |
2317 | int bytes_returned = 0; | |
2318 | int len; | |
2319 | int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); | |
2320 | PNEGOTIATE_MESSAGE SecurityBlob; | |
2321 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2322 | __u32 negotiate_flags, capabilities; | |
2323 | __u16 count; | |
2324 | ||
2325 | cFYI(1, ("In NTLMSSP sesssetup (negotiate) ")); | |
2326 | if(ses == NULL) | |
2327 | return -EINVAL; | |
2328 | domain = ses->domainName; | |
2329 | *pNTLMv2_flag = FALSE; | |
2330 | smb_buffer = cifs_buf_get(); | |
2331 | if (smb_buffer == NULL) { | |
2332 | return -ENOMEM; | |
2333 | } | |
2334 | smb_buffer_response = smb_buffer; | |
2335 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2336 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2337 | ||
2338 | /* send SMBsessionSetup here */ | |
2339 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2340 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
2341 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2342 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2343 | ||
2344 | pSMB->req.AndXCommand = 0xFF; | |
2345 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2346 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2347 | ||
2348 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2349 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2350 | ||
2351 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2352 | CAP_EXTENDED_SECURITY; | |
2353 | if (ses->capabilities & CAP_UNICODE) { | |
2354 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2355 | capabilities |= CAP_UNICODE; | |
2356 | } | |
2357 | if (ses->capabilities & CAP_STATUS32) { | |
2358 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2359 | capabilities |= CAP_STATUS32; | |
2360 | } | |
2361 | if (ses->capabilities & CAP_DFS) { | |
2362 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2363 | capabilities |= CAP_DFS; | |
2364 | } | |
2365 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2366 | ||
2367 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2368 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2369 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2370 | SecurityBlob->MessageType = NtLmNegotiate; | |
2371 | negotiate_flags = | |
2372 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
2373 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | 0x80000000 | | |
2374 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; | |
2375 | if(sign_CIFS_PDUs) | |
2376 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; | |
2377 | if(ntlmv2_support) | |
2378 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2379 | /* setup pointers to domain name and workstation name */ | |
2380 | bcc_ptr += SecurityBlobLength; | |
2381 | ||
2382 | SecurityBlob->WorkstationName.Buffer = 0; | |
2383 | SecurityBlob->WorkstationName.Length = 0; | |
2384 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2385 | ||
2386 | if (domain == NULL) { | |
2387 | SecurityBlob->DomainName.Buffer = 0; | |
2388 | SecurityBlob->DomainName.Length = 0; | |
2389 | SecurityBlob->DomainName.MaximumLength = 0; | |
2390 | } else { | |
2391 | __u16 len; | |
2392 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2393 | strncpy(bcc_ptr, domain, 63); | |
2394 | len = strnlen(domain, 64); | |
2395 | SecurityBlob->DomainName.MaximumLength = | |
2396 | cpu_to_le16(len); | |
2397 | SecurityBlob->DomainName.Buffer = | |
2398 | cpu_to_le32((long) &SecurityBlob-> | |
2399 | DomainString - | |
2400 | (long) &SecurityBlob->Signature); | |
2401 | bcc_ptr += len; | |
2402 | SecurityBlobLength += len; | |
2403 | SecurityBlob->DomainName.Length = | |
2404 | cpu_to_le16(len); | |
2405 | } | |
2406 | if (ses->capabilities & CAP_UNICODE) { | |
2407 | if ((long) bcc_ptr % 2) { | |
2408 | *bcc_ptr = 0; | |
2409 | bcc_ptr++; | |
2410 | } | |
2411 | ||
2412 | bytes_returned = | |
2413 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
2414 | 32, nls_codepage); | |
2415 | bcc_ptr += 2 * bytes_returned; | |
2416 | bytes_returned = | |
2417 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32, | |
2418 | nls_codepage); | |
2419 | bcc_ptr += 2 * bytes_returned; | |
2420 | bcc_ptr += 2; /* null terminate Linux version */ | |
2421 | bytes_returned = | |
2422 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
2423 | 64, nls_codepage); | |
2424 | bcc_ptr += 2 * bytes_returned; | |
2425 | *(bcc_ptr + 1) = 0; | |
2426 | *(bcc_ptr + 2) = 0; | |
2427 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2428 | *(bcc_ptr + 1) = 0; | |
2429 | *(bcc_ptr + 2) = 0; | |
2430 | bcc_ptr += 2; /* null domain */ | |
2431 | } else { /* ASCII */ | |
2432 | strcpy(bcc_ptr, "Linux version "); | |
2433 | bcc_ptr += strlen("Linux version "); | |
2434 | strcpy(bcc_ptr, system_utsname.release); | |
2435 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2436 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2437 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2438 | bcc_ptr++; /* empty domain field */ | |
2439 | *bcc_ptr = 0; | |
2440 | } | |
2441 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2442 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2443 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2444 | smb_buffer->smb_buf_length += count; | |
2445 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2446 | ||
2447 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2448 | &bytes_returned, 1); | |
2449 | ||
2450 | if (smb_buffer_response->Status.CifsError == | |
2451 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2452 | rc = 0; | |
2453 | ||
2454 | if (rc) { | |
2455 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2456 | } else if ((smb_buffer_response->WordCount == 3) | |
2457 | || (smb_buffer_response->WordCount == 4)) { | |
2458 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2459 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2460 | ||
2461 | if (action & GUEST_LOGIN) | |
2462 | cFYI(1, (" Guest login")); | |
2463 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
2464 | ||
2465 | bcc_ptr = pByteArea(smb_buffer_response); | |
2466 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2467 | ||
2468 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2469 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2470 | cFYI(1, | |
2471 | ("Unexpected NTLMSSP message type received %d", | |
2472 | SecurityBlob2->MessageType)); | |
2473 | } else if (ses) { | |
2474 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ | |
2475 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2476 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2477 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2478 | && (blob_len < | |
2479 | pSMBr->resp.ByteCount))) { | |
2480 | ||
2481 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2482 | bcc_ptr += blob_len; | |
2483 | cFYI(1, | |
2484 | ("Security Blob Length %d ", | |
2485 | blob_len)); | |
2486 | } | |
2487 | ||
2488 | cFYI(1, ("NTLMSSP Challenge rcvd ")); | |
2489 | ||
2490 | memcpy(ses->server->cryptKey, | |
2491 | SecurityBlob2->Challenge, | |
2492 | CIFS_CRYPTO_KEY_SIZE); | |
2493 | if(SecurityBlob2->NegotiateFlags & cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) | |
2494 | *pNTLMv2_flag = TRUE; | |
2495 | ||
2496 | if((SecurityBlob2->NegotiateFlags & | |
2497 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
2498 | || (sign_CIFS_PDUs > 1)) | |
2499 | ses->server->secMode |= | |
2500 | SECMODE_SIGN_REQUIRED; | |
2501 | if ((SecurityBlob2->NegotiateFlags & | |
2502 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) | |
2503 | ses->server->secMode |= | |
2504 | SECMODE_SIGN_ENABLED; | |
2505 | ||
2506 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2507 | if ((long) (bcc_ptr) % 2) { | |
2508 | remaining_words = | |
2509 | (BCC(smb_buffer_response) | |
2510 | - 1) / 2; | |
2511 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2512 | } else { | |
2513 | remaining_words = | |
2514 | BCC | |
2515 | (smb_buffer_response) / 2; | |
2516 | } | |
2517 | len = | |
2518 | UniStrnlen((wchar_t *) bcc_ptr, | |
2519 | remaining_words - 1); | |
2520 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2521 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2522 | terminating last Unicode string in response */ | |
2523 | ses->serverOS = | |
433dc24f | 2524 | kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1da177e4 LT |
2525 | cifs_strfromUCS_le(ses->serverOS, |
2526 | (wchar_t *) | |
2527 | bcc_ptr, len, | |
2528 | nls_codepage); | |
2529 | bcc_ptr += 2 * (len + 1); | |
2530 | remaining_words -= len + 1; | |
2531 | ses->serverOS[2 * len] = 0; | |
2532 | ses->serverOS[1 + (2 * len)] = 0; | |
2533 | if (remaining_words > 0) { | |
2534 | len = UniStrnlen((wchar_t *) | |
2535 | bcc_ptr, | |
2536 | remaining_words | |
2537 | - 1); | |
2538 | ses->serverNOS = | |
433dc24f | 2539 | kcalloc(1, 2 * (len + 1), |
1da177e4 LT |
2540 | GFP_KERNEL); |
2541 | cifs_strfromUCS_le(ses-> | |
2542 | serverNOS, | |
2543 | (wchar_t *) | |
2544 | bcc_ptr, | |
2545 | len, | |
2546 | nls_codepage); | |
2547 | bcc_ptr += 2 * (len + 1); | |
2548 | ses->serverNOS[2 * len] = 0; | |
2549 | ses->serverNOS[1 + | |
2550 | (2 * len)] = 0; | |
2551 | remaining_words -= len + 1; | |
2552 | if (remaining_words > 0) { | |
2553 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2554 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
2555 | ses->serverDomain = | |
433dc24f | 2556 | kcalloc(1, 2 * |
1da177e4 LT |
2557 | (len + |
2558 | 1), | |
2559 | GFP_KERNEL); | |
2560 | cifs_strfromUCS_le | |
2561 | (ses-> | |
2562 | serverDomain, | |
2563 | (wchar_t *) | |
2564 | bcc_ptr, len, | |
2565 | nls_codepage); | |
2566 | bcc_ptr += | |
2567 | 2 * (len + 1); | |
2568 | ses-> | |
2569 | serverDomain[2 | |
2570 | * len] | |
2571 | = 0; | |
2572 | ses-> | |
2573 | serverDomain[1 | |
2574 | + | |
2575 | (2 | |
2576 | * | |
2577 | len)] | |
2578 | = 0; | |
2579 | } /* else no more room so create dummy domain string */ | |
2580 | else | |
2581 | ses->serverDomain = | |
433dc24f | 2582 | kcalloc(1, 2, |
1da177e4 LT |
2583 | GFP_KERNEL); |
2584 | } else { /* no room so create dummy domain and NOS string */ | |
2585 | ses->serverDomain = | |
433dc24f | 2586 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 | 2587 | ses->serverNOS = |
433dc24f | 2588 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 LT |
2589 | } |
2590 | } else { /* ASCII */ | |
2591 | len = strnlen(bcc_ptr, 1024); | |
2592 | if (((long) bcc_ptr + len) - (long) | |
2593 | pByteArea(smb_buffer_response) | |
2594 | <= BCC(smb_buffer_response)) { | |
2595 | ses->serverOS = | |
433dc24f | 2596 | kcalloc(1, len + 1, |
1da177e4 LT |
2597 | GFP_KERNEL); |
2598 | strncpy(ses->serverOS, | |
2599 | bcc_ptr, len); | |
2600 | ||
2601 | bcc_ptr += len; | |
2602 | bcc_ptr[0] = 0; /* null terminate string */ | |
2603 | bcc_ptr++; | |
2604 | ||
2605 | len = strnlen(bcc_ptr, 1024); | |
2606 | ses->serverNOS = | |
433dc24f | 2607 | kcalloc(1, len + 1, |
1da177e4 LT |
2608 | GFP_KERNEL); |
2609 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2610 | bcc_ptr += len; | |
2611 | bcc_ptr[0] = 0; | |
2612 | bcc_ptr++; | |
2613 | ||
2614 | len = strnlen(bcc_ptr, 1024); | |
2615 | ses->serverDomain = | |
433dc24f | 2616 | kcalloc(1, len + 1, |
1da177e4 LT |
2617 | GFP_KERNEL); |
2618 | strncpy(ses->serverDomain, bcc_ptr, len); | |
2619 | bcc_ptr += len; | |
2620 | bcc_ptr[0] = 0; | |
2621 | bcc_ptr++; | |
2622 | } else | |
2623 | cFYI(1, | |
2624 | ("Variable field of length %d extends beyond end of smb ", | |
2625 | len)); | |
2626 | } | |
2627 | } else { | |
2628 | cERROR(1, | |
2629 | (" Security Blob Length extends beyond end of SMB")); | |
2630 | } | |
2631 | } else { | |
2632 | cERROR(1, ("No session structure passed in.")); | |
2633 | } | |
2634 | } else { | |
2635 | cERROR(1, | |
2636 | (" Invalid Word count %d: ", | |
2637 | smb_buffer_response->WordCount)); | |
2638 | rc = -EIO; | |
2639 | } | |
2640 | ||
2641 | if (smb_buffer) | |
2642 | cifs_buf_release(smb_buffer); | |
2643 | ||
2644 | return rc; | |
2645 | } | |
2646 | static int | |
2647 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2648 | char *ntlm_session_key, int ntlmv2_flag, | |
2649 | const struct nls_table *nls_codepage) | |
2650 | { | |
2651 | struct smb_hdr *smb_buffer; | |
2652 | struct smb_hdr *smb_buffer_response; | |
2653 | SESSION_SETUP_ANDX *pSMB; | |
2654 | SESSION_SETUP_ANDX *pSMBr; | |
2655 | char *bcc_ptr; | |
2656 | char *user; | |
2657 | char *domain; | |
2658 | int rc = 0; | |
2659 | int remaining_words = 0; | |
2660 | int bytes_returned = 0; | |
2661 | int len; | |
2662 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2663 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2664 | __u32 negotiate_flags, capabilities; | |
2665 | __u16 count; | |
2666 | ||
2667 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
2668 | if(ses == NULL) | |
2669 | return -EINVAL; | |
2670 | user = ses->userName; | |
2671 | domain = ses->domainName; | |
2672 | smb_buffer = cifs_buf_get(); | |
2673 | if (smb_buffer == NULL) { | |
2674 | return -ENOMEM; | |
2675 | } | |
2676 | smb_buffer_response = smb_buffer; | |
2677 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2678 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2679 | ||
2680 | /* send SMBsessionSetup here */ | |
2681 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2682 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
2683 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2684 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2685 | pSMB->req.AndXCommand = 0xFF; | |
2686 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2687 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2688 | ||
2689 | pSMB->req.hdr.Uid = ses->Suid; | |
2690 | ||
2691 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2692 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2693 | ||
2694 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2695 | CAP_EXTENDED_SECURITY; | |
2696 | if (ses->capabilities & CAP_UNICODE) { | |
2697 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2698 | capabilities |= CAP_UNICODE; | |
2699 | } | |
2700 | if (ses->capabilities & CAP_STATUS32) { | |
2701 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2702 | capabilities |= CAP_STATUS32; | |
2703 | } | |
2704 | if (ses->capabilities & CAP_DFS) { | |
2705 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2706 | capabilities |= CAP_DFS; | |
2707 | } | |
2708 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2709 | ||
2710 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2711 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2712 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2713 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2714 | bcc_ptr += SecurityBlobLength; | |
2715 | negotiate_flags = | |
2716 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | | |
2717 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2718 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
2719 | if(sign_CIFS_PDUs) | |
2720 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; | |
2721 | if(ntlmv2_flag) | |
2722 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2723 | ||
2724 | /* setup pointers to domain name and workstation name */ | |
2725 | ||
2726 | SecurityBlob->WorkstationName.Buffer = 0; | |
2727 | SecurityBlob->WorkstationName.Length = 0; | |
2728 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2729 | SecurityBlob->SessionKey.Length = 0; | |
2730 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2731 | SecurityBlob->SessionKey.Buffer = 0; | |
2732 | ||
2733 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2734 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2735 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2736 | ||
2737 | SecurityBlob->NtChallengeResponse.Length = | |
2738 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
2739 | SecurityBlob->NtChallengeResponse.MaximumLength = | |
2740 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
2741 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESSION_KEY_SIZE); | |
2742 | SecurityBlob->NtChallengeResponse.Buffer = | |
2743 | cpu_to_le32(SecurityBlobLength); | |
2744 | SecurityBlobLength += CIFS_SESSION_KEY_SIZE; | |
2745 | bcc_ptr += CIFS_SESSION_KEY_SIZE; | |
2746 | ||
2747 | if (ses->capabilities & CAP_UNICODE) { | |
2748 | if (domain == NULL) { | |
2749 | SecurityBlob->DomainName.Buffer = 0; | |
2750 | SecurityBlob->DomainName.Length = 0; | |
2751 | SecurityBlob->DomainName.MaximumLength = 0; | |
2752 | } else { | |
2753 | __u16 len = | |
2754 | cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64, | |
2755 | nls_codepage); | |
2756 | len *= 2; | |
2757 | SecurityBlob->DomainName.MaximumLength = | |
2758 | cpu_to_le16(len); | |
2759 | SecurityBlob->DomainName.Buffer = | |
2760 | cpu_to_le32(SecurityBlobLength); | |
2761 | bcc_ptr += len; | |
2762 | SecurityBlobLength += len; | |
2763 | SecurityBlob->DomainName.Length = | |
2764 | cpu_to_le16(len); | |
2765 | } | |
2766 | if (user == NULL) { | |
2767 | SecurityBlob->UserName.Buffer = 0; | |
2768 | SecurityBlob->UserName.Length = 0; | |
2769 | SecurityBlob->UserName.MaximumLength = 0; | |
2770 | } else { | |
2771 | __u16 len = | |
2772 | cifs_strtoUCS((wchar_t *) bcc_ptr, user, 64, | |
2773 | nls_codepage); | |
2774 | len *= 2; | |
2775 | SecurityBlob->UserName.MaximumLength = | |
2776 | cpu_to_le16(len); | |
2777 | SecurityBlob->UserName.Buffer = | |
2778 | cpu_to_le32(SecurityBlobLength); | |
2779 | bcc_ptr += len; | |
2780 | SecurityBlobLength += len; | |
2781 | SecurityBlob->UserName.Length = | |
2782 | cpu_to_le16(len); | |
2783 | } | |
2784 | ||
2785 | /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((wchar_t *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
2786 | SecurityBlob->WorkstationName.Length *= 2; | |
2787 | SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
2788 | SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength); | |
2789 | bcc_ptr += SecurityBlob->WorkstationName.Length; | |
2790 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
2791 | SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
2792 | ||
2793 | if ((long) bcc_ptr % 2) { | |
2794 | *bcc_ptr = 0; | |
2795 | bcc_ptr++; | |
2796 | } | |
2797 | bytes_returned = | |
2798 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
2799 | 32, nls_codepage); | |
2800 | bcc_ptr += 2 * bytes_returned; | |
2801 | bytes_returned = | |
2802 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32, | |
2803 | nls_codepage); | |
2804 | bcc_ptr += 2 * bytes_returned; | |
2805 | bcc_ptr += 2; /* null term version string */ | |
2806 | bytes_returned = | |
2807 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
2808 | 64, nls_codepage); | |
2809 | bcc_ptr += 2 * bytes_returned; | |
2810 | *(bcc_ptr + 1) = 0; | |
2811 | *(bcc_ptr + 2) = 0; | |
2812 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2813 | *(bcc_ptr + 1) = 0; | |
2814 | *(bcc_ptr + 2) = 0; | |
2815 | bcc_ptr += 2; /* null domain */ | |
2816 | } else { /* ASCII */ | |
2817 | if (domain == NULL) { | |
2818 | SecurityBlob->DomainName.Buffer = 0; | |
2819 | SecurityBlob->DomainName.Length = 0; | |
2820 | SecurityBlob->DomainName.MaximumLength = 0; | |
2821 | } else { | |
2822 | __u16 len; | |
2823 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2824 | strncpy(bcc_ptr, domain, 63); | |
2825 | len = strnlen(domain, 64); | |
2826 | SecurityBlob->DomainName.MaximumLength = | |
2827 | cpu_to_le16(len); | |
2828 | SecurityBlob->DomainName.Buffer = | |
2829 | cpu_to_le32(SecurityBlobLength); | |
2830 | bcc_ptr += len; | |
2831 | SecurityBlobLength += len; | |
2832 | SecurityBlob->DomainName.Length = cpu_to_le16(len); | |
2833 | } | |
2834 | if (user == NULL) { | |
2835 | SecurityBlob->UserName.Buffer = 0; | |
2836 | SecurityBlob->UserName.Length = 0; | |
2837 | SecurityBlob->UserName.MaximumLength = 0; | |
2838 | } else { | |
2839 | __u16 len; | |
2840 | strncpy(bcc_ptr, user, 63); | |
2841 | len = strnlen(user, 64); | |
2842 | SecurityBlob->UserName.MaximumLength = | |
2843 | cpu_to_le16(len); | |
2844 | SecurityBlob->UserName.Buffer = | |
2845 | cpu_to_le32(SecurityBlobLength); | |
2846 | bcc_ptr += len; | |
2847 | SecurityBlobLength += len; | |
2848 | SecurityBlob->UserName.Length = cpu_to_le16(len); | |
2849 | } | |
2850 | /* BB fill in our workstation name if known BB */ | |
2851 | ||
2852 | strcpy(bcc_ptr, "Linux version "); | |
2853 | bcc_ptr += strlen("Linux version "); | |
2854 | strcpy(bcc_ptr, system_utsname.release); | |
2855 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2856 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2857 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2858 | bcc_ptr++; /* null domain */ | |
2859 | *bcc_ptr = 0; | |
2860 | } | |
2861 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2862 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2863 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2864 | smb_buffer->smb_buf_length += count; | |
2865 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2866 | ||
2867 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2868 | &bytes_returned, 1); | |
2869 | if (rc) { | |
2870 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2871 | } else if ((smb_buffer_response->WordCount == 3) | |
2872 | || (smb_buffer_response->WordCount == 4)) { | |
2873 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2874 | __u16 blob_len = | |
2875 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2876 | if (action & GUEST_LOGIN) | |
2877 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
2878 | /* if(SecurityBlob2->MessageType != NtLm??){ | |
2879 | cFYI("Unexpected message type on auth response is %d ")); | |
2880 | } */ | |
2881 | if (ses) { | |
2882 | cFYI(1, | |
2883 | ("Does UID on challenge %d match auth response UID %d ", | |
2884 | ses->Suid, smb_buffer_response->Uid)); | |
2885 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */ | |
2886 | bcc_ptr = pByteArea(smb_buffer_response); | |
2887 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2888 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2889 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2890 | && (blob_len < | |
2891 | pSMBr->resp.ByteCount))) { | |
2892 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2893 | bcc_ptr += | |
2894 | blob_len; | |
2895 | cFYI(1, | |
2896 | ("Security Blob Length %d ", | |
2897 | blob_len)); | |
2898 | } | |
2899 | ||
2900 | cFYI(1, | |
2901 | ("NTLMSSP response to Authenticate ")); | |
2902 | ||
2903 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2904 | if ((long) (bcc_ptr) % 2) { | |
2905 | remaining_words = | |
2906 | (BCC(smb_buffer_response) | |
2907 | - 1) / 2; | |
2908 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2909 | } else { | |
2910 | remaining_words = BCC(smb_buffer_response) / 2; | |
2911 | } | |
2912 | len = | |
2913 | UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); | |
2914 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2915 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2916 | terminating last Unicode string in response */ | |
2917 | ses->serverOS = | |
433dc24f | 2918 | kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1da177e4 LT |
2919 | cifs_strfromUCS_le(ses->serverOS, |
2920 | (wchar_t *) | |
2921 | bcc_ptr, len, | |
2922 | nls_codepage); | |
2923 | bcc_ptr += 2 * (len + 1); | |
2924 | remaining_words -= len + 1; | |
2925 | ses->serverOS[2 * len] = 0; | |
2926 | ses->serverOS[1 + (2 * len)] = 0; | |
2927 | if (remaining_words > 0) { | |
2928 | len = UniStrnlen((wchar_t *) | |
2929 | bcc_ptr, | |
2930 | remaining_words | |
2931 | - 1); | |
2932 | ses->serverNOS = | |
433dc24f | 2933 | kcalloc(1, 2 * (len + 1), |
1da177e4 LT |
2934 | GFP_KERNEL); |
2935 | cifs_strfromUCS_le(ses-> | |
2936 | serverNOS, | |
2937 | (wchar_t *) | |
2938 | bcc_ptr, | |
2939 | len, | |
2940 | nls_codepage); | |
2941 | bcc_ptr += 2 * (len + 1); | |
2942 | ses->serverNOS[2 * len] = 0; | |
2943 | ses->serverNOS[1+(2*len)] = 0; | |
2944 | remaining_words -= len + 1; | |
2945 | if (remaining_words > 0) { | |
2946 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2947 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ | |
2948 | ses->serverDomain = | |
433dc24f | 2949 | kcalloc(1, 2 * |
1da177e4 LT |
2950 | (len + |
2951 | 1), | |
2952 | GFP_KERNEL); | |
2953 | cifs_strfromUCS_le | |
2954 | (ses-> | |
2955 | serverDomain, | |
2956 | (wchar_t *) | |
2957 | bcc_ptr, len, | |
2958 | nls_codepage); | |
2959 | bcc_ptr += | |
2960 | 2 * (len + 1); | |
2961 | ses-> | |
2962 | serverDomain[2 | |
2963 | * len] | |
2964 | = 0; | |
2965 | ses-> | |
2966 | serverDomain[1 | |
2967 | + | |
2968 | (2 | |
2969 | * | |
2970 | len)] | |
2971 | = 0; | |
2972 | } /* else no more room so create dummy domain string */ | |
2973 | else | |
433dc24f | 2974 | ses->serverDomain = kcalloc(1, 2,GFP_KERNEL); |
1da177e4 | 2975 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2976 | ses->serverDomain = kcalloc(1, 2, GFP_KERNEL); |
2977 | ses->serverNOS = kcalloc(1, 2, GFP_KERNEL); | |
1da177e4 LT |
2978 | } |
2979 | } else { /* ASCII */ | |
2980 | len = strnlen(bcc_ptr, 1024); | |
2981 | if (((long) bcc_ptr + len) - | |
2982 | (long) pByteArea(smb_buffer_response) | |
2983 | <= BCC(smb_buffer_response)) { | |
433dc24f | 2984 | ses->serverOS = kcalloc(1, len + 1,GFP_KERNEL); |
1da177e4 LT |
2985 | strncpy(ses->serverOS,bcc_ptr, len); |
2986 | ||
2987 | bcc_ptr += len; | |
2988 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2989 | bcc_ptr++; | |
2990 | ||
2991 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 2992 | ses->serverNOS = kcalloc(1, len+1,GFP_KERNEL); |
1da177e4 LT |
2993 | strncpy(ses->serverNOS, bcc_ptr, len); |
2994 | bcc_ptr += len; | |
2995 | bcc_ptr[0] = 0; | |
2996 | bcc_ptr++; | |
2997 | ||
2998 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 2999 | ses->serverDomain = kcalloc(1, len+1,GFP_KERNEL); |
1da177e4 LT |
3000 | strncpy(ses->serverDomain, bcc_ptr, len); |
3001 | bcc_ptr += len; | |
3002 | bcc_ptr[0] = 0; | |
3003 | bcc_ptr++; | |
3004 | } else | |
3005 | cFYI(1, | |
3006 | ("Variable field of length %d extends beyond end of smb ", | |
3007 | len)); | |
3008 | } | |
3009 | } else { | |
3010 | cERROR(1, | |
3011 | (" Security Blob Length extends beyond end of SMB")); | |
3012 | } | |
3013 | } else { | |
3014 | cERROR(1, ("No session structure passed in.")); | |
3015 | } | |
3016 | } else { | |
3017 | cERROR(1, | |
3018 | (" Invalid Word count %d: ", | |
3019 | smb_buffer_response->WordCount)); | |
3020 | rc = -EIO; | |
3021 | } | |
3022 | ||
3023 | if (smb_buffer) | |
3024 | cifs_buf_release(smb_buffer); | |
3025 | ||
3026 | return rc; | |
3027 | } | |
3028 | ||
3029 | int | |
3030 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3031 | const char *tree, struct cifsTconInfo *tcon, | |
3032 | const struct nls_table *nls_codepage) | |
3033 | { | |
3034 | struct smb_hdr *smb_buffer; | |
3035 | struct smb_hdr *smb_buffer_response; | |
3036 | TCONX_REQ *pSMB; | |
3037 | TCONX_RSP *pSMBr; | |
3038 | unsigned char *bcc_ptr; | |
3039 | int rc = 0; | |
3040 | int length; | |
3041 | __u16 count; | |
3042 | ||
3043 | if (ses == NULL) | |
3044 | return -EIO; | |
3045 | ||
3046 | smb_buffer = cifs_buf_get(); | |
3047 | if (smb_buffer == NULL) { | |
3048 | return -ENOMEM; | |
3049 | } | |
3050 | smb_buffer_response = smb_buffer; | |
3051 | ||
3052 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3053 | NULL /*no tid */ , 4 /*wct */ ); | |
3054 | smb_buffer->Uid = ses->Suid; | |
3055 | pSMB = (TCONX_REQ *) smb_buffer; | |
3056 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3057 | ||
3058 | pSMB->AndXCommand = 0xFF; | |
3059 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
3060 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ | |
3061 | bcc_ptr = &pSMB->Password[0]; | |
3062 | bcc_ptr++; /* skip password */ | |
3063 | ||
3064 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
3065 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
3066 | ||
3067 | if (ses->capabilities & CAP_STATUS32) { | |
3068 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3069 | } | |
3070 | if (ses->capabilities & CAP_DFS) { | |
3071 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3072 | } | |
3073 | if (ses->capabilities & CAP_UNICODE) { | |
3074 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3075 | length = | |
3076 | cifs_strtoUCS((wchar_t *) bcc_ptr, tree, 100, nls_codepage); | |
3077 | bcc_ptr += 2 * length; /* convert num of 16 bit words to bytes */ | |
3078 | bcc_ptr += 2; /* skip trailing null */ | |
3079 | } else { /* ASCII */ | |
3080 | ||
3081 | strcpy(bcc_ptr, tree); | |
3082 | bcc_ptr += strlen(tree) + 1; | |
3083 | } | |
3084 | strcpy(bcc_ptr, "?????"); | |
3085 | bcc_ptr += strlen("?????"); | |
3086 | bcc_ptr += 1; | |
3087 | count = bcc_ptr - &pSMB->Password[0]; | |
3088 | pSMB->hdr.smb_buf_length += count; | |
3089 | pSMB->ByteCount = cpu_to_le16(count); | |
3090 | ||
3091 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3092 | ||
3093 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3094 | /* above now done in SendReceive */ | |
3095 | if ((rc == 0) && (tcon != NULL)) { | |
3096 | tcon->tidStatus = CifsGood; | |
3097 | tcon->tid = smb_buffer_response->Tid; | |
3098 | bcc_ptr = pByteArea(smb_buffer_response); | |
3099 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
3100 | /* skip service field (NB: this field is always ASCII) */ | |
3101 | bcc_ptr += length + 1; | |
3102 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); | |
3103 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3104 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3105 | if ((bcc_ptr + (2 * length)) - | |
3106 | pByteArea(smb_buffer_response) <= | |
3107 | BCC(smb_buffer_response)) { | |
3108 | if(tcon->nativeFileSystem) | |
3109 | kfree(tcon->nativeFileSystem); | |
3110 | tcon->nativeFileSystem = | |
433dc24f | 3111 | kcalloc(1, length + 2, GFP_KERNEL); |
1da177e4 LT |
3112 | cifs_strfromUCS_le(tcon->nativeFileSystem, |
3113 | (wchar_t *) bcc_ptr, | |
3114 | length, nls_codepage); | |
3115 | bcc_ptr += 2 * length; | |
3116 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3117 | bcc_ptr[1] = 0; | |
3118 | bcc_ptr += 2; | |
3119 | } | |
3120 | /* else do not bother copying these informational fields */ | |
3121 | } else { | |
3122 | length = strnlen(bcc_ptr, 1024); | |
3123 | if ((bcc_ptr + length) - | |
3124 | pByteArea(smb_buffer_response) <= | |
3125 | BCC(smb_buffer_response)) { | |
3126 | if(tcon->nativeFileSystem) | |
3127 | kfree(tcon->nativeFileSystem); | |
3128 | tcon->nativeFileSystem = | |
433dc24f | 3129 | kcalloc(1, length + 1, GFP_KERNEL); |
1da177e4 LT |
3130 | strncpy(tcon->nativeFileSystem, bcc_ptr, |
3131 | length); | |
3132 | } | |
3133 | /* else do not bother copying these informational fields */ | |
3134 | } | |
3135 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); | |
3136 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); | |
3137 | } else if ((rc == 0) && tcon == NULL) { | |
3138 | /* all we need to save for IPC$ connection */ | |
3139 | ses->ipc_tid = smb_buffer_response->Tid; | |
3140 | } | |
3141 | ||
3142 | if (smb_buffer) | |
3143 | cifs_buf_release(smb_buffer); | |
3144 | return rc; | |
3145 | } | |
3146 | ||
3147 | int | |
3148 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3149 | { | |
3150 | int rc = 0; | |
3151 | int xid; | |
3152 | struct cifsSesInfo *ses = NULL; | |
3153 | struct task_struct *cifsd_task; | |
3154 | ||
3155 | xid = GetXid(); | |
3156 | ||
3157 | if (cifs_sb->tcon) { | |
3158 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3159 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3160 | if (rc == -EBUSY) { | |
3161 | FreeXid(xid); | |
3162 | return 0; | |
3163 | } | |
3164 | tconInfoFree(cifs_sb->tcon); | |
3165 | if ((ses) && (ses->server)) { | |
3166 | /* save off task so we do not refer to ses later */ | |
3167 | cifsd_task = ses->server->tsk; | |
3168 | cFYI(1, ("About to do SMBLogoff ")); | |
3169 | rc = CIFSSMBLogoff(xid, ses); | |
3170 | if (rc == -EBUSY) { | |
3171 | FreeXid(xid); | |
3172 | return 0; | |
3173 | } else if (rc == -ESHUTDOWN) { | |
3174 | cFYI(1,("Waking up socket by sending it signal")); | |
3175 | if(cifsd_task) | |
3176 | send_sig(SIGKILL,cifsd_task,1); | |
3177 | rc = 0; | |
3178 | } /* else - we have an smb session | |
3179 | left on this socket do not kill cifsd */ | |
3180 | } else | |
3181 | cFYI(1, ("No session or bad tcon")); | |
3182 | } | |
3183 | ||
3184 | cifs_sb->tcon = NULL; | |
3185 | if (ses) { | |
3186 | set_current_state(TASK_INTERRUPTIBLE); | |
3187 | schedule_timeout(HZ / 2); | |
3188 | } | |
3189 | if (ses) | |
3190 | sesInfoFree(ses); | |
3191 | ||
3192 | FreeXid(xid); | |
3193 | return rc; /* BB check if we should always return zero here */ | |
3194 | } | |
3195 | ||
3196 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
3197 | struct nls_table * nls_info) | |
3198 | { | |
3199 | int rc = 0; | |
3200 | char ntlm_session_key[CIFS_SESSION_KEY_SIZE]; | |
3201 | int ntlmv2_flag = FALSE; | |
ad009ac9 | 3202 | int first_time = 0; |
1da177e4 LT |
3203 | |
3204 | /* what if server changes its buffer size after dropping the session? */ | |
3205 | if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { | |
3206 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3207 | if(rc == -EAGAIN) /* retry only once on 1st time connection */ { | |
3208 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3209 | if(rc == -EAGAIN) | |
3210 | rc = -EHOSTDOWN; | |
3211 | } | |
3212 | if(rc == 0) { | |
3213 | spin_lock(&GlobalMid_Lock); | |
3214 | if(pSesInfo->server->tcpStatus != CifsExiting) | |
3215 | pSesInfo->server->tcpStatus = CifsGood; | |
3216 | else | |
3217 | rc = -EHOSTDOWN; | |
3218 | spin_unlock(&GlobalMid_Lock); | |
3219 | ||
3220 | } | |
ad009ac9 | 3221 | first_time = 1; |
1da177e4 LT |
3222 | } |
3223 | if (!rc) { | |
3224 | pSesInfo->capabilities = pSesInfo->server->capabilities; | |
3225 | if(linuxExtEnabled == 0) | |
3226 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3227 | /* pSesInfo->sequence_number = 0;*/ |
1da177e4 LT |
3228 | cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x Time Zone: %d", |
3229 | pSesInfo->server->secMode, | |
3230 | pSesInfo->server->capabilities, | |
3231 | pSesInfo->server->timeZone)); | |
3232 | if (extended_security | |
3233 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3234 | && (pSesInfo->server->secType == NTLMSSP)) { | |
3235 | cFYI(1, ("New style sesssetup ")); | |
3236 | rc = CIFSSpnegoSessSetup(xid, pSesInfo, | |
3237 | NULL /* security blob */, | |
3238 | 0 /* blob length */, | |
3239 | nls_info); | |
3240 | } else if (extended_security | |
3241 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3242 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
3243 | cFYI(1, ("NTLMSSP sesssetup ")); | |
3244 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, | |
3245 | pSesInfo, | |
3246 | &ntlmv2_flag, | |
3247 | nls_info); | |
3248 | if (!rc) { | |
3249 | if(ntlmv2_flag) { | |
3250 | char * v2_response; | |
3251 | cFYI(1,("Can use more secure NTLM version 2 password hash")); | |
3252 | if(CalcNTLMv2_partial_mac_key(pSesInfo, | |
3253 | nls_info)) { | |
3254 | rc = -ENOMEM; | |
3255 | goto ss_err_exit; | |
3256 | } else | |
3257 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
3258 | if(v2_response) { | |
3259 | CalcNTLMv2_response(pSesInfo,v2_response); | |
ad009ac9 SF |
3260 | /* if(first_time) |
3261 | cifs_calculate_ntlmv2_mac_key( | |
3262 | pSesInfo->server->mac_signing_key, | |
3263 | response, ntlm_session_key, */ | |
1da177e4 LT |
3264 | kfree(v2_response); |
3265 | /* BB Put dummy sig in SessSetup PDU? */ | |
3266 | } else { | |
3267 | rc = -ENOMEM; | |
3268 | goto ss_err_exit; | |
3269 | } | |
3270 | ||
3271 | } else { | |
3272 | SMBNTencrypt(pSesInfo->password, | |
3273 | pSesInfo->server->cryptKey, | |
3274 | ntlm_session_key); | |
3275 | ||
ad009ac9 SF |
3276 | if(first_time) |
3277 | cifs_calculate_mac_key( | |
3278 | pSesInfo->server->mac_signing_key, | |
3279 | ntlm_session_key, | |
3280 | pSesInfo->password); | |
1da177e4 LT |
3281 | } |
3282 | /* for better security the weaker lanman hash not sent | |
3283 | in AuthSessSetup so we no longer calculate it */ | |
3284 | ||
3285 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3286 | pSesInfo, | |
3287 | ntlm_session_key, | |
3288 | ntlmv2_flag, | |
3289 | nls_info); | |
3290 | } | |
3291 | } else { /* old style NTLM 0.12 session setup */ | |
3292 | SMBNTencrypt(pSesInfo->password, | |
3293 | pSesInfo->server->cryptKey, | |
3294 | ntlm_session_key); | |
3295 | ||
ad009ac9 SF |
3296 | if(first_time) |
3297 | cifs_calculate_mac_key( | |
3298 | pSesInfo->server->mac_signing_key, | |
3299 | ntlm_session_key, pSesInfo->password); | |
3300 | ||
1da177e4 LT |
3301 | rc = CIFSSessSetup(xid, pSesInfo, |
3302 | ntlm_session_key, nls_info); | |
3303 | } | |
3304 | if (rc) { | |
3305 | cERROR(1,("Send error in SessSetup = %d",rc)); | |
3306 | } else { | |
3307 | cFYI(1,("CIFS Session Established successfully")); | |
3308 | pSesInfo->status = CifsGood; | |
3309 | } | |
3310 | } | |
3311 | ss_err_exit: | |
3312 | return rc; | |
3313 | } | |
3314 |