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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) { | |
0cb766ae | 181 | msleep(3000); |
1da177e4 LT |
182 | } else { |
183 | atomic_inc(&tcpSesReconnectCount); | |
184 | spin_lock(&GlobalMid_Lock); | |
185 | if(server->tcpStatus != CifsExiting) | |
186 | server->tcpStatus = CifsGood; | |
ad009ac9 SF |
187 | server->sequence_number = 0; |
188 | spin_unlock(&GlobalMid_Lock); | |
1da177e4 LT |
189 | /* atomic_set(&server->inFlight,0);*/ |
190 | wake_up(&server->response_q); | |
191 | } | |
192 | } | |
193 | return rc; | |
194 | } | |
195 | ||
e4eb295d SF |
196 | /* |
197 | return codes: | |
198 | 0 not a transact2, or all data present | |
199 | >0 transact2 with that much data missing | |
200 | -EINVAL = invalid transact2 | |
201 | ||
202 | */ | |
203 | static int check2ndT2(struct smb_hdr * pSMB, unsigned int maxBufSize) | |
204 | { | |
205 | struct smb_t2_rsp * pSMBt; | |
206 | int total_data_size; | |
207 | int data_in_this_rsp; | |
208 | int remaining; | |
209 | ||
210 | if(pSMB->Command != SMB_COM_TRANSACTION2) | |
211 | return 0; | |
212 | ||
213 | /* check for plausible wct, bcc and t2 data and parm sizes */ | |
214 | /* check for parm and data offset going beyond end of smb */ | |
215 | if(pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
216 | cFYI(1,("invalid transact2 word count")); | |
217 | return -EINVAL; | |
218 | } | |
219 | ||
220 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
221 | ||
222 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
223 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
224 | ||
225 | remaining = total_data_size - data_in_this_rsp; | |
226 | ||
227 | if(remaining == 0) | |
228 | return 0; | |
229 | else if(remaining < 0) { | |
230 | cFYI(1,("total data %d smaller than data in frame %d", | |
231 | total_data_size, data_in_this_rsp)); | |
232 | return -EINVAL; | |
233 | } else { | |
234 | cFYI(1,("missing %d bytes from transact2, check next response", | |
235 | remaining)); | |
236 | if(total_data_size > maxBufSize) { | |
237 | cERROR(1,("TotalDataSize %d is over maximum buffer %d", | |
238 | total_data_size,maxBufSize)); | |
239 | return -EINVAL; | |
240 | } | |
241 | return remaining; | |
242 | } | |
243 | } | |
244 | ||
245 | static int coalesce_t2(struct smb_hdr * psecond, struct smb_hdr *pTargetSMB) | |
246 | { | |
247 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
248 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
249 | int total_data_size; | |
250 | int total_in_buf; | |
251 | int remaining; | |
252 | int total_in_buf2; | |
253 | char * data_area_of_target; | |
254 | char * data_area_of_buf2; | |
255 | __u16 byte_count; | |
256 | ||
257 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
258 | ||
259 | if(total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { | |
260 | cFYI(1,("total data sizes of primary and secondary t2 differ")); | |
261 | } | |
262 | ||
263 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
264 | ||
265 | remaining = total_data_size - total_in_buf; | |
266 | ||
267 | if(remaining < 0) | |
268 | return -EINVAL; | |
269 | ||
270 | if(remaining == 0) /* nothing to do, ignore */ | |
271 | return 0; | |
272 | ||
273 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); | |
274 | if(remaining < total_in_buf2) { | |
275 | cFYI(1,("transact2 2nd response contains too much data")); | |
276 | } | |
277 | ||
278 | /* find end of first SMB data area */ | |
279 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + | |
280 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); | |
281 | /* validate target area */ | |
282 | ||
283 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
284 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); | |
285 | ||
286 | data_area_of_target += total_in_buf; | |
287 | ||
288 | /* copy second buffer into end of first buffer */ | |
289 | memcpy(data_area_of_target,data_area_of_buf2,total_in_buf2); | |
290 | total_in_buf += total_in_buf2; | |
291 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
292 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
293 | byte_count += total_in_buf2; | |
294 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
295 | ||
296 | byte_count = be32_to_cpu(pTargetSMB->smb_buf_length); | |
297 | byte_count += total_in_buf2; | |
298 | ||
299 | /* BB also add check that we are not beyond maximum buffer size */ | |
300 | ||
301 | pTargetSMB->smb_buf_length = cpu_to_be32(byte_count); | |
302 | ||
303 | if(remaining == total_in_buf2) { | |
304 | cFYI(1,("found the last secondary response")); | |
305 | return 0; /* we are done */ | |
306 | } else /* more responses to go */ | |
307 | return 1; | |
308 | ||
309 | } | |
310 | ||
1da177e4 LT |
311 | static int |
312 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
313 | { | |
314 | int length; | |
315 | unsigned int pdu_length, total_read; | |
316 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
317 | struct smb_hdr *bigbuf = NULL; |
318 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
319 | struct msghdr smb_msg; |
320 | struct kvec iov; | |
321 | struct socket *csocket = server->ssocket; | |
322 | struct list_head *tmp; | |
323 | struct cifsSesInfo *ses; | |
324 | struct task_struct *task_to_wake = NULL; | |
325 | struct mid_q_entry *mid_entry; | |
326 | char *temp; | |
b8643e1b | 327 | int isLargeBuf = FALSE; |
e4eb295d SF |
328 | int isMultiRsp; |
329 | int reconnect; | |
1da177e4 LT |
330 | |
331 | daemonize("cifsd"); | |
332 | allow_signal(SIGKILL); | |
333 | current->flags |= PF_MEMALLOC; | |
334 | server->tsk = current; /* save process info to wake at shutdown */ | |
335 | cFYI(1, ("Demultiplex PID: %d", current->pid)); | |
336 | write_lock(&GlobalSMBSeslock); | |
337 | atomic_inc(&tcpSesAllocCount); | |
338 | length = tcpSesAllocCount.counter; | |
339 | write_unlock(&GlobalSMBSeslock); | |
340 | if(length > 1) { | |
341 | mempool_resize(cifs_req_poolp, | |
342 | length + cifs_min_rcv, | |
343 | GFP_KERNEL); | |
344 | } | |
345 | ||
346 | while (server->tcpStatus != CifsExiting) { | |
b8643e1b SF |
347 | if (bigbuf == NULL) { |
348 | bigbuf = cifs_buf_get(); | |
349 | if(bigbuf == NULL) { | |
350 | cERROR(1,("No memory for large SMB response")); | |
351 | msleep(3000); | |
352 | /* retry will check if exiting */ | |
353 | continue; | |
354 | } | |
355 | } else if(isLargeBuf) { | |
356 | /* we are reusing a dirtry large buf, clear its start */ | |
357 | memset(bigbuf, 0, sizeof (struct smb_hdr)); | |
1da177e4 | 358 | } |
b8643e1b SF |
359 | |
360 | if (smallbuf == NULL) { | |
361 | smallbuf = cifs_small_buf_get(); | |
362 | if(smallbuf == NULL) { | |
363 | cERROR(1,("No memory for SMB response")); | |
364 | msleep(1000); | |
365 | /* retry will check if exiting */ | |
366 | continue; | |
367 | } | |
368 | /* beginning of smb buffer is cleared in our buf_get */ | |
369 | } else /* if existing small buf clear beginning */ | |
370 | memset(smallbuf, 0, sizeof (struct smb_hdr)); | |
371 | ||
372 | isLargeBuf = FALSE; | |
e4eb295d | 373 | isMultiRsp = FALSE; |
b8643e1b | 374 | smb_buffer = smallbuf; |
1da177e4 LT |
375 | iov.iov_base = smb_buffer; |
376 | iov.iov_len = 4; | |
377 | smb_msg.msg_control = NULL; | |
378 | smb_msg.msg_controllen = 0; | |
379 | length = | |
380 | kernel_recvmsg(csocket, &smb_msg, | |
381 | &iov, 1, 4, 0 /* BB see socket.h flags */); | |
382 | ||
383 | if(server->tcpStatus == CifsExiting) { | |
384 | break; | |
385 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
57337e42 | 386 | cFYI(1,("Reconnect after server stopped responding")); |
1da177e4 LT |
387 | cifs_reconnect(server); |
388 | cFYI(1,("call to reconnect done")); | |
389 | csocket = server->ssocket; | |
390 | continue; | |
391 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 392 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
393 | allowing socket to clear and app threads to set |
394 | tcpStatus CifsNeedReconnect if server hung */ | |
395 | continue; | |
396 | } else if (length <= 0) { | |
397 | if(server->tcpStatus == CifsNew) { | |
57337e42 | 398 | cFYI(1,("tcp session abend after SMBnegprot")); |
09d1db5c SF |
399 | /* some servers kill the TCP session rather than |
400 | returning an SMB negprot error, in which | |
401 | case reconnecting here is not going to help, | |
402 | and so simply return error to mount */ | |
1da177e4 LT |
403 | break; |
404 | } | |
405 | if(length == -EINTR) { | |
406 | cFYI(1,("cifsd thread killed")); | |
407 | break; | |
408 | } | |
57337e42 SF |
409 | cFYI(1,("Reconnect after unexpected peek error %d", |
410 | length)); | |
1da177e4 LT |
411 | cifs_reconnect(server); |
412 | csocket = server->ssocket; | |
413 | wake_up(&server->response_q); | |
414 | continue; | |
46810cbf SF |
415 | } else if (length < 4) { |
416 | cFYI(1, | |
57337e42 | 417 | ("Frame under four bytes received (%d bytes long)", |
46810cbf SF |
418 | length)); |
419 | cifs_reconnect(server); | |
420 | csocket = server->ssocket; | |
421 | wake_up(&server->response_q); | |
422 | continue; | |
423 | } | |
1da177e4 | 424 | |
46810cbf SF |
425 | /* the right amount was read from socket - 4 bytes */ |
426 | ||
427 | pdu_length = ntohl(smb_buffer->smb_buf_length); | |
428 | cFYI(1,("rfc1002 length(big endian)0x%x)", pdu_length+4)); | |
429 | ||
430 | temp = (char *) smb_buffer; | |
431 | if (temp[0] == (char) RFC1002_SESSION_KEEP_ALIVE) { | |
e4eb295d | 432 | continue; |
46810cbf | 433 | } else if (temp[0] == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
e4eb295d SF |
434 | cFYI(1,("Good RFC 1002 session rsp")); |
435 | continue; | |
46810cbf SF |
436 | } else if (temp[0] == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
437 | /* we get this from Windows 98 instead of | |
438 | an error on SMB negprot response */ | |
e4eb295d SF |
439 | cFYI(1,("Negative RFC1002 Session Response Error 0x%x)", |
440 | temp[4])); | |
46810cbf SF |
441 | if(server->tcpStatus == CifsNew) { |
442 | /* if nack on negprot (rather than | |
443 | ret of smb negprot error) reconnecting | |
444 | not going to help, ret error to mount */ | |
445 | break; | |
446 | } else { | |
447 | /* give server a second to | |
448 | clean up before reconnect attempt */ | |
449 | msleep(1000); | |
450 | /* always try 445 first on reconnect | |
451 | since we get NACK on some if we ever | |
452 | connected to port 139 (the NACK is | |
453 | since we do not begin with RFC1001 | |
454 | session initialize frame) */ | |
455 | server->addr.sockAddr.sin_port = | |
456 | htons(CIFS_PORT); | |
1da177e4 LT |
457 | cifs_reconnect(server); |
458 | csocket = server->ssocket; | |
46810cbf | 459 | wake_up(&server->response_q); |
1da177e4 | 460 | continue; |
46810cbf SF |
461 | } |
462 | } else if (temp[0] != (char) 0) { | |
463 | cERROR(1,("Unknown RFC 1002 frame")); | |
464 | cifs_dump_mem(" Received Data: ", temp, length); | |
465 | cifs_reconnect(server); | |
466 | csocket = server->ssocket; | |
467 | continue; | |
e4eb295d SF |
468 | } |
469 | ||
470 | /* else we have an SMB response */ | |
471 | if((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || | |
46810cbf | 472 | (pdu_length < sizeof (struct smb_hdr) - 1 - 4)) { |
e4eb295d | 473 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 474 | length, pdu_length+4)); |
e4eb295d SF |
475 | cifs_reconnect(server); |
476 | csocket = server->ssocket; | |
477 | wake_up(&server->response_q); | |
478 | continue; | |
479 | } | |
480 | ||
481 | /* else length ok */ | |
482 | reconnect = 0; | |
483 | ||
484 | if(pdu_length > MAX_CIFS_HDR_SIZE - 4) { | |
485 | isLargeBuf = TRUE; | |
486 | memcpy(bigbuf, smallbuf, 4); | |
487 | smb_buffer = bigbuf; | |
488 | } | |
489 | length = 0; | |
490 | iov.iov_base = 4 + (char *)smb_buffer; | |
491 | iov.iov_len = pdu_length; | |
492 | for (total_read = 0; total_read < pdu_length; | |
493 | total_read += length) { | |
494 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
495 | pdu_length - total_read, 0); | |
496 | if((server->tcpStatus == CifsExiting) || | |
497 | (length == -EINTR)) { | |
498 | /* then will exit */ | |
499 | reconnect = 2; | |
500 | break; | |
501 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
502 | cifs_reconnect(server); |
503 | csocket = server->ssocket; | |
e4eb295d SF |
504 | /* Reconnect wakes up rspns q */ |
505 | /* Now we will reread sock */ | |
506 | reconnect = 1; | |
507 | break; | |
508 | } else if ((length == -ERESTARTSYS) || | |
509 | (length == -EAGAIN)) { | |
510 | msleep(1); /* minimum sleep to prevent looping, | |
511 | allowing socket to clear and app | |
512 | threads to set tcpStatus | |
513 | CifsNeedReconnect if server hung*/ | |
46810cbf | 514 | continue; |
e4eb295d SF |
515 | } else if (length <= 0) { |
516 | cERROR(1,("Received no data, expecting %d", | |
517 | pdu_length - total_read)); | |
518 | cifs_reconnect(server); | |
519 | csocket = server->ssocket; | |
520 | reconnect = 1; | |
521 | break; | |
46810cbf | 522 | } |
e4eb295d SF |
523 | } |
524 | if(reconnect == 2) | |
525 | break; | |
526 | else if(reconnect == 1) | |
527 | continue; | |
1da177e4 | 528 | |
e4eb295d SF |
529 | length += 4; /* account for rfc1002 hdr */ |
530 | ||
09d1db5c | 531 | |
e4eb295d SF |
532 | dump_smb(smb_buffer, length); |
533 | if (checkSMB (smb_buffer, smb_buffer->Mid, total_read+4)) { | |
534 | cERROR(1, ("Bad SMB Received ")); | |
535 | continue; | |
536 | } | |
1da177e4 | 537 | |
e4eb295d SF |
538 | |
539 | task_to_wake = NULL; | |
540 | spin_lock(&GlobalMid_Lock); | |
541 | list_for_each(tmp, &server->pending_mid_q) { | |
542 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
543 | ||
544 | if ((mid_entry->mid == smb_buffer->Mid) && | |
545 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && | |
546 | (mid_entry->command == smb_buffer->Command)) { | |
e4eb295d SF |
547 | if(check2ndT2(smb_buffer,server->maxBuf) > 0) { |
548 | /* We have a multipart transact2 resp */ | |
cd63499c | 549 | isMultiRsp = TRUE; |
e4eb295d SF |
550 | if(mid_entry->resp_buf) { |
551 | /* merge response - fix up 1st*/ | |
552 | if(coalesce_t2(smb_buffer, | |
553 | mid_entry->resp_buf)) { | |
e4eb295d SF |
554 | break; |
555 | } else { | |
556 | /* all parts received */ | |
557 | goto multi_t2_fnd; | |
558 | } | |
559 | } else { | |
560 | if(!isLargeBuf) { | |
561 | cERROR(1,("1st trans2 resp needs bigbuf")); | |
562 | /* BB maybe we can fix this up, switch | |
563 | to already allocated large buffer? */ | |
564 | } else { | |
cd63499c | 565 | /* Have first buffer */ |
e4eb295d SF |
566 | mid_entry->resp_buf = |
567 | smb_buffer; | |
568 | mid_entry->largeBuf = 1; | |
e4eb295d SF |
569 | bigbuf = NULL; |
570 | } | |
571 | } | |
572 | break; | |
573 | } | |
574 | mid_entry->resp_buf = smb_buffer; | |
46810cbf | 575 | if(isLargeBuf) |
e4eb295d | 576 | mid_entry->largeBuf = 1; |
46810cbf | 577 | else |
e4eb295d SF |
578 | mid_entry->largeBuf = 0; |
579 | multi_t2_fnd: | |
580 | task_to_wake = mid_entry->tsk; | |
581 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
582 | break; | |
46810cbf | 583 | } |
1da177e4 | 584 | } |
e4eb295d SF |
585 | spin_unlock(&GlobalMid_Lock); |
586 | if (task_to_wake) { | |
cd63499c SF |
587 | /* Was previous buf put in mpx struct for multi-rsp? */ |
588 | if(!isMultiRsp) { | |
589 | /* smb buffer will be freed by user thread */ | |
590 | if(isLargeBuf) { | |
591 | bigbuf = NULL; | |
592 | } else | |
593 | smallbuf = NULL; | |
594 | } | |
e4eb295d | 595 | wake_up_process(task_to_wake); |
57337e42 | 596 | } else if ((is_valid_oplock_break(smb_buffer) == FALSE) |
e4eb295d SF |
597 | && (isMultiRsp == FALSE)) { |
598 | cERROR(1, ("No task to wake, unknown frame rcvd!")); | |
599 | cifs_dump_mem("Received Data is: ",temp,sizeof(struct smb_hdr)); | |
600 | } | |
601 | } /* end while !EXITING */ | |
602 | ||
1da177e4 LT |
603 | spin_lock(&GlobalMid_Lock); |
604 | server->tcpStatus = CifsExiting; | |
605 | server->tsk = NULL; | |
31ca3bc3 SF |
606 | /* check if we have blocked requests that need to free */ |
607 | /* Note that cifs_max_pending is normally 50, but | |
608 | can be set at module install time to as little as two */ | |
609 | if(atomic_read(&server->inFlight) >= cifs_max_pending) | |
610 | atomic_set(&server->inFlight, cifs_max_pending - 1); | |
611 | /* We do not want to set the max_pending too low or we | |
612 | could end up with the counter going negative */ | |
1da177e4 LT |
613 | spin_unlock(&GlobalMid_Lock); |
614 | /* Although there should not be any requests blocked on | |
615 | this queue it can not hurt to be paranoid and try to wake up requests | |
09d1db5c | 616 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
617 | to the same server - they now will see the session is in exit state |
618 | and get out of SendReceive. */ | |
619 | wake_up_all(&server->request_q); | |
620 | /* give those requests time to exit */ | |
b8643e1b SF |
621 | msleep(125); |
622 | ||
1da177e4 LT |
623 | if(server->ssocket) { |
624 | sock_release(csocket); | |
625 | server->ssocket = NULL; | |
626 | } | |
b8643e1b SF |
627 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
628 | if (bigbuf != NULL) | |
629 | cifs_buf_release(bigbuf); | |
630 | if (smallbuf != NULL) | |
631 | cifs_small_buf_release(smallbuf); | |
1da177e4 LT |
632 | |
633 | read_lock(&GlobalSMBSeslock); | |
634 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
635 | /* loop through server session structures attached to this and |
636 | mark them dead */ | |
1da177e4 LT |
637 | list_for_each(tmp, &GlobalSMBSessionList) { |
638 | ses = | |
639 | list_entry(tmp, struct cifsSesInfo, | |
640 | cifsSessionList); | |
641 | if (ses->server == server) { | |
642 | ses->status = CifsExiting; | |
643 | ses->server = NULL; | |
644 | } | |
645 | } | |
646 | read_unlock(&GlobalSMBSeslock); | |
647 | } else { | |
31ca3bc3 SF |
648 | /* although we can not zero the server struct pointer yet, |
649 | since there are active requests which may depnd on them, | |
650 | mark the corresponding SMB sessions as exiting too */ | |
651 | list_for_each(tmp, &GlobalSMBSessionList) { | |
652 | ses = list_entry(tmp, struct cifsSesInfo, | |
653 | cifsSessionList); | |
654 | if (ses->server == server) { | |
655 | ses->status = CifsExiting; | |
656 | } | |
657 | } | |
658 | ||
1da177e4 LT |
659 | spin_lock(&GlobalMid_Lock); |
660 | list_for_each(tmp, &server->pending_mid_q) { | |
661 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
662 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
663 | cFYI(1, | |
09d1db5c | 664 | ("Clearing Mid 0x%x - waking up ",mid_entry->mid)); |
1da177e4 LT |
665 | task_to_wake = mid_entry->tsk; |
666 | if(task_to_wake) { | |
667 | wake_up_process(task_to_wake); | |
668 | } | |
669 | } | |
670 | } | |
671 | spin_unlock(&GlobalMid_Lock); | |
672 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 673 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 674 | msleep(125); |
1da177e4 LT |
675 | } |
676 | ||
677 | if (list_empty(&server->pending_mid_q)) { | |
678 | /* mpx threads have not exited yet give them | |
679 | at least the smb send timeout time for long ops */ | |
31ca3bc3 SF |
680 | /* due to delays on oplock break requests, we need |
681 | to wait at least 45 seconds before giving up | |
682 | on a request getting a response and going ahead | |
683 | and killing cifsd */ | |
1da177e4 | 684 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 685 | msleep(46000); |
1da177e4 LT |
686 | /* if threads still have not exited they are probably never |
687 | coming home not much else we can do but free the memory */ | |
688 | } | |
1da177e4 LT |
689 | |
690 | write_lock(&GlobalSMBSeslock); | |
691 | atomic_dec(&tcpSesAllocCount); | |
692 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
693 | |
694 | /* last chance to mark ses pointers invalid | |
695 | if there are any pointing to this (e.g | |
696 | if a crazy root user tried to kill cifsd | |
697 | kernel thread explicitly this might happen) */ | |
698 | list_for_each(tmp, &GlobalSMBSessionList) { | |
699 | ses = list_entry(tmp, struct cifsSesInfo, | |
700 | cifsSessionList); | |
701 | if (ses->server == server) { | |
702 | ses->server = NULL; | |
703 | } | |
704 | } | |
1da177e4 | 705 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 SF |
706 | |
707 | kfree(server); | |
1da177e4 LT |
708 | if(length > 0) { |
709 | mempool_resize(cifs_req_poolp, | |
710 | length + cifs_min_rcv, | |
711 | GFP_KERNEL); | |
712 | } | |
b8643e1b SF |
713 | |
714 | msleep(250); | |
1da177e4 LT |
715 | return 0; |
716 | } | |
717 | ||
1da177e4 LT |
718 | static int |
719 | cifs_parse_mount_options(char *options, const char *devname,struct smb_vol *vol) | |
720 | { | |
721 | char *value; | |
722 | char *data; | |
723 | unsigned int temp_len, i, j; | |
724 | char separator[2]; | |
725 | ||
726 | separator[0] = ','; | |
727 | separator[1] = 0; | |
728 | ||
729 | memset(vol->source_rfc1001_name,0x20,15); | |
730 | for(i=0;i < strnlen(system_utsname.nodename,15);i++) { | |
731 | /* does not have to be a perfect mapping since the field is | |
732 | informational, only used for servers that do not support | |
733 | port 445 and it can be overridden at mount time */ | |
09d1db5c SF |
734 | vol->source_rfc1001_name[i] = |
735 | toupper(system_utsname.nodename[i]); | |
1da177e4 LT |
736 | } |
737 | vol->source_rfc1001_name[15] = 0; | |
738 | ||
739 | vol->linux_uid = current->uid; /* current->euid instead? */ | |
740 | vol->linux_gid = current->gid; | |
741 | vol->dir_mode = S_IRWXUGO; | |
742 | /* 2767 perms indicate mandatory locking support */ | |
743 | vol->file_mode = S_IALLUGO & ~(S_ISUID | S_IXGRP); | |
744 | ||
745 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
746 | vol->rw = TRUE; | |
747 | ||
748 | if (!options) | |
749 | return 1; | |
750 | ||
751 | if(strncmp(options,"sep=",4) == 0) { | |
752 | if(options[4] != 0) { | |
753 | separator[0] = options[4]; | |
754 | options += 5; | |
755 | } else { | |
756 | cFYI(1,("Null separator not allowed")); | |
757 | } | |
758 | } | |
759 | ||
760 | while ((data = strsep(&options, separator)) != NULL) { | |
761 | if (!*data) | |
762 | continue; | |
763 | if ((value = strchr(data, '=')) != NULL) | |
764 | *value++ = '\0'; | |
765 | ||
766 | if (strnicmp(data, "user_xattr",10) == 0) {/*parse before user*/ | |
767 | vol->no_xattr = 0; | |
768 | } else if (strnicmp(data, "nouser_xattr",12) == 0) { | |
769 | vol->no_xattr = 1; | |
770 | } else if (strnicmp(data, "user", 4) == 0) { | |
771 | if (!value || !*value) { | |
772 | printk(KERN_WARNING | |
773 | "CIFS: invalid or missing username\n"); | |
774 | return 1; /* needs_arg; */ | |
775 | } | |
776 | if (strnlen(value, 200) < 200) { | |
777 | vol->username = value; | |
778 | } else { | |
779 | printk(KERN_WARNING "CIFS: username too long\n"); | |
780 | return 1; | |
781 | } | |
782 | } else if (strnicmp(data, "pass", 4) == 0) { | |
783 | if (!value) { | |
784 | vol->password = NULL; | |
785 | continue; | |
786 | } else if(value[0] == 0) { | |
787 | /* check if string begins with double comma | |
788 | since that would mean the password really | |
789 | does start with a comma, and would not | |
790 | indicate an empty string */ | |
791 | if(value[1] != separator[0]) { | |
792 | vol->password = NULL; | |
793 | continue; | |
794 | } | |
795 | } | |
796 | temp_len = strlen(value); | |
797 | /* removed password length check, NTLM passwords | |
798 | can be arbitrarily long */ | |
799 | ||
800 | /* if comma in password, the string will be | |
801 | prematurely null terminated. Commas in password are | |
802 | specified across the cifs mount interface by a double | |
803 | comma ie ,, and a comma used as in other cases ie ',' | |
804 | as a parameter delimiter/separator is single and due | |
805 | to the strsep above is temporarily zeroed. */ | |
806 | ||
807 | /* NB: password legally can have multiple commas and | |
808 | the only illegal character in a password is null */ | |
809 | ||
09d1db5c SF |
810 | if ((value[temp_len] == 0) && |
811 | (value[temp_len+1] == separator[0])) { | |
1da177e4 LT |
812 | /* reinsert comma */ |
813 | value[temp_len] = separator[0]; | |
814 | temp_len+=2; /* move after the second comma */ | |
815 | while(value[temp_len] != 0) { | |
816 | if (value[temp_len] == separator[0]) { | |
09d1db5c SF |
817 | if (value[temp_len+1] == |
818 | separator[0]) { | |
819 | /* skip second comma */ | |
820 | temp_len++; | |
1da177e4 LT |
821 | } else { |
822 | /* single comma indicating start | |
823 | of next parm */ | |
824 | break; | |
825 | } | |
826 | } | |
827 | temp_len++; | |
828 | } | |
829 | if(value[temp_len] == 0) { | |
830 | options = NULL; | |
831 | } else { | |
832 | value[temp_len] = 0; | |
833 | /* point option to start of next parm */ | |
834 | options = value + temp_len + 1; | |
835 | } | |
836 | /* go from value to value + temp_len condensing | |
837 | double commas to singles. Note that this ends up | |
838 | allocating a few bytes too many, which is ok */ | |
433dc24f SF |
839 | vol->password = kcalloc(1, temp_len, GFP_KERNEL); |
840 | if(vol->password == NULL) { | |
841 | printk("CIFS: no memory for pass\n"); | |
842 | return 1; | |
843 | } | |
1da177e4 LT |
844 | for(i=0,j=0;i<temp_len;i++,j++) { |
845 | vol->password[j] = value[i]; | |
09d1db5c SF |
846 | if(value[i] == separator[0] |
847 | && value[i+1] == separator[0]) { | |
1da177e4 LT |
848 | /* skip second comma */ |
849 | i++; | |
850 | } | |
851 | } | |
852 | vol->password[j] = 0; | |
853 | } else { | |
09d1db5c | 854 | vol->password = kcalloc(1, temp_len+1, GFP_KERNEL); |
433dc24f SF |
855 | if(vol->password == NULL) { |
856 | printk("CIFS: no memory for pass\n"); | |
857 | return 1; | |
858 | } | |
1da177e4 LT |
859 | strcpy(vol->password, value); |
860 | } | |
861 | } else if (strnicmp(data, "ip", 2) == 0) { | |
862 | if (!value || !*value) { | |
863 | vol->UNCip = NULL; | |
864 | } else if (strnlen(value, 35) < 35) { | |
865 | vol->UNCip = value; | |
866 | } else { | |
867 | printk(KERN_WARNING "CIFS: ip address too long\n"); | |
868 | return 1; | |
869 | } | |
870 | } else if ((strnicmp(data, "unc", 3) == 0) | |
871 | || (strnicmp(data, "target", 6) == 0) | |
872 | || (strnicmp(data, "path", 4) == 0)) { | |
873 | if (!value || !*value) { | |
874 | printk(KERN_WARNING | |
875 | "CIFS: invalid path to network resource\n"); | |
876 | return 1; /* needs_arg; */ | |
877 | } | |
878 | if ((temp_len = strnlen(value, 300)) < 300) { | |
879 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
880 | if(vol->UNC == NULL) | |
881 | return 1; | |
882 | strcpy(vol->UNC,value); | |
883 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
884 | vol->UNC[0] = '\\'; | |
885 | vol->UNC[1] = '\\'; | |
886 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
887 | printk(KERN_WARNING | |
888 | "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
889 | return 1; | |
890 | } | |
891 | } else { | |
892 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
893 | return 1; | |
894 | } | |
895 | } else if ((strnicmp(data, "domain", 3) == 0) | |
896 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
897 | if (!value || !*value) { | |
898 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
899 | return 1; /* needs_arg; */ | |
900 | } | |
901 | /* BB are there cases in which a comma can be valid in | |
902 | a domain name and need special handling? */ | |
903 | if (strnlen(value, 65) < 65) { | |
904 | vol->domainname = value; | |
905 | cFYI(1, ("Domain name set")); | |
906 | } else { | |
907 | printk(KERN_WARNING "CIFS: domain name too long\n"); | |
908 | return 1; | |
909 | } | |
910 | } else if (strnicmp(data, "iocharset", 9) == 0) { | |
911 | if (!value || !*value) { | |
912 | printk(KERN_WARNING "CIFS: invalid iocharset specified\n"); | |
913 | return 1; /* needs_arg; */ | |
914 | } | |
915 | if (strnlen(value, 65) < 65) { | |
916 | if(strnicmp(value,"default",7)) | |
917 | vol->iocharset = value; | |
918 | /* if iocharset not set load_nls_default used by caller */ | |
919 | cFYI(1, ("iocharset set to %s",value)); | |
920 | } else { | |
921 | printk(KERN_WARNING "CIFS: iocharset name too long.\n"); | |
922 | return 1; | |
923 | } | |
924 | } else if (strnicmp(data, "uid", 3) == 0) { | |
925 | if (value && *value) { | |
926 | vol->linux_uid = | |
927 | simple_strtoul(value, &value, 0); | |
928 | } | |
929 | } else if (strnicmp(data, "gid", 3) == 0) { | |
930 | if (value && *value) { | |
931 | vol->linux_gid = | |
932 | simple_strtoul(value, &value, 0); | |
933 | } | |
934 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
935 | if (value && *value) { | |
936 | vol->file_mode = | |
937 | simple_strtoul(value, &value, 0); | |
938 | } | |
939 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
940 | if (value && *value) { | |
941 | vol->dir_mode = | |
942 | simple_strtoul(value, &value, 0); | |
943 | } | |
944 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
945 | if (value && *value) { | |
946 | vol->dir_mode = | |
947 | simple_strtoul(value, &value, 0); | |
948 | } | |
949 | } else if (strnicmp(data, "port", 4) == 0) { | |
950 | if (value && *value) { | |
951 | vol->port = | |
952 | simple_strtoul(value, &value, 0); | |
953 | } | |
954 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
955 | if (value && *value) { | |
956 | vol->rsize = | |
957 | simple_strtoul(value, &value, 0); | |
958 | } | |
959 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
960 | if (value && *value) { | |
961 | vol->wsize = | |
962 | simple_strtoul(value, &value, 0); | |
963 | } | |
964 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
965 | if (value && *value) { | |
966 | vol->sockopt = | |
967 | simple_strtoul(value, &value, 0); | |
968 | } | |
969 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
970 | if (!value || !*value || (*value == ' ')) { | |
971 | cFYI(1,("invalid (empty) netbiosname specified")); | |
972 | } else { | |
973 | memset(vol->source_rfc1001_name,0x20,15); | |
974 | for(i=0;i<15;i++) { | |
975 | /* BB are there cases in which a comma can be | |
976 | valid in this workstation netbios name (and need | |
977 | special handling)? */ | |
978 | ||
979 | /* We do not uppercase netbiosname for user */ | |
980 | if (value[i]==0) | |
981 | break; | |
982 | else | |
983 | vol->source_rfc1001_name[i] = value[i]; | |
984 | } | |
985 | /* The string has 16th byte zero still from | |
986 | set at top of the function */ | |
987 | if((i==15) && (value[i] != 0)) | |
988 | printk(KERN_WARNING "CIFS: netbiosname longer than 15 and was truncated.\n"); | |
989 | } | |
990 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
991 | /* ignore */ | |
992 | } else if (strnicmp(data, "version", 3) == 0) { | |
993 | /* ignore */ | |
994 | } else if (strnicmp(data, "guest",5) == 0) { | |
995 | /* ignore */ | |
996 | } else if (strnicmp(data, "rw", 2) == 0) { | |
997 | vol->rw = TRUE; | |
998 | } else if ((strnicmp(data, "suid", 4) == 0) || | |
999 | (strnicmp(data, "nosuid", 6) == 0) || | |
1000 | (strnicmp(data, "exec", 4) == 0) || | |
1001 | (strnicmp(data, "noexec", 6) == 0) || | |
1002 | (strnicmp(data, "nodev", 5) == 0) || | |
1003 | (strnicmp(data, "noauto", 6) == 0) || | |
1004 | (strnicmp(data, "dev", 3) == 0)) { | |
1005 | /* The mount tool or mount.cifs helper (if present) | |
1006 | uses these opts to set flags, and the flags are read | |
1007 | by the kernel vfs layer before we get here (ie | |
1008 | before read super) so there is no point trying to | |
1009 | parse these options again and set anything and it | |
1010 | is ok to just ignore them */ | |
1011 | continue; | |
1012 | } else if (strnicmp(data, "ro", 2) == 0) { | |
1013 | vol->rw = FALSE; | |
1014 | } else if (strnicmp(data, "hard", 4) == 0) { | |
1015 | vol->retry = 1; | |
1016 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1017 | vol->retry = 0; | |
1018 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1019 | vol->noperm = 0; | |
1020 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1021 | vol->noperm = 1; | |
6a0b4824 SF |
1022 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1023 | vol->remap = 1; | |
1024 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1025 | vol->remap = 0; | |
1da177e4 LT |
1026 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1027 | vol->setuids = 1; | |
1028 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1029 | vol->setuids = 0; | |
1030 | } else if (strnicmp(data, "nohard", 6) == 0) { | |
1031 | vol->retry = 0; | |
1032 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1033 | vol->retry = 1; | |
1034 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1035 | vol->intr = 0; | |
1036 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1037 | vol->intr = 1; | |
1038 | } else if (strnicmp(data, "serverino",7) == 0) { | |
1039 | vol->server_ino = 1; | |
1040 | } else if (strnicmp(data, "noserverino",9) == 0) { | |
1041 | vol->server_ino = 0; | |
1042 | } else if (strnicmp(data, "acl",3) == 0) { | |
1043 | vol->no_psx_acl = 0; | |
1044 | } else if (strnicmp(data, "noacl",5) == 0) { | |
1045 | vol->no_psx_acl = 1; | |
1046 | } else if (strnicmp(data, "direct",6) == 0) { | |
1047 | vol->direct_io = 1; | |
1048 | } else if (strnicmp(data, "forcedirectio",13) == 0) { | |
1049 | vol->direct_io = 1; | |
1050 | } else if (strnicmp(data, "in6_addr",8) == 0) { | |
1051 | if (!value || !*value) { | |
1052 | vol->in6_addr = NULL; | |
1053 | } else if (strnlen(value, 49) == 48) { | |
1054 | vol->in6_addr = value; | |
1055 | } else { | |
1056 | printk(KERN_WARNING "CIFS: ip v6 address not 48 characters long\n"); | |
1057 | return 1; | |
1058 | } | |
1059 | } else if (strnicmp(data, "noac", 4) == 0) { | |
1060 | printk(KERN_WARNING "CIFS: Mount option noac not supported. Instead set /proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1061 | } else | |
1062 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n",data); | |
1063 | } | |
1064 | if (vol->UNC == NULL) { | |
1065 | if(devname == NULL) { | |
1066 | printk(KERN_WARNING "CIFS: Missing UNC name for mount target\n"); | |
1067 | return 1; | |
1068 | } | |
1069 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
1070 | vol->UNC = kmalloc(temp_len+1,GFP_KERNEL); | |
1071 | if(vol->UNC == NULL) | |
1072 | return 1; | |
1073 | strcpy(vol->UNC,devname); | |
1074 | if (strncmp(vol->UNC, "//", 2) == 0) { | |
1075 | vol->UNC[0] = '\\'; | |
1076 | vol->UNC[1] = '\\'; | |
1077 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
1078 | printk(KERN_WARNING "CIFS: UNC Path does not begin with // or \\\\ \n"); | |
1079 | return 1; | |
1080 | } | |
1081 | } else { | |
1082 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1083 | return 1; | |
1084 | } | |
1085 | } | |
1086 | if(vol->UNCip == NULL) | |
1087 | vol->UNCip = &vol->UNC[2]; | |
1088 | ||
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | static struct cifsSesInfo * | |
1093 | cifs_find_tcp_session(struct in_addr * target_ip_addr, | |
1094 | struct in6_addr *target_ip6_addr, | |
1095 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1096 | { | |
1097 | struct list_head *tmp; | |
1098 | struct cifsSesInfo *ses; | |
1099 | *psrvTcp = NULL; | |
1100 | read_lock(&GlobalSMBSeslock); | |
1101 | ||
1102 | list_for_each(tmp, &GlobalSMBSessionList) { | |
1103 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1104 | if (ses->server) { | |
1105 | if((target_ip_addr && | |
1106 | (ses->server->addr.sockAddr.sin_addr.s_addr | |
1107 | == target_ip_addr->s_addr)) || (target_ip6_addr | |
1108 | && memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1109 | target_ip6_addr,sizeof(*target_ip6_addr)))){ | |
1110 | /* BB lock server and tcp session and increment use count here?? */ | |
1111 | *psrvTcp = ses->server; /* found a match on the TCP session */ | |
1112 | /* BB check if reconnection needed */ | |
1113 | if (strncmp | |
1114 | (ses->userName, userName, | |
1115 | MAX_USERNAME_SIZE) == 0){ | |
1116 | read_unlock(&GlobalSMBSeslock); | |
1117 | return ses; /* found exact match on both tcp and SMB sessions */ | |
1118 | } | |
1119 | } | |
1120 | } | |
1121 | /* else tcp and smb sessions need reconnection */ | |
1122 | } | |
1123 | read_unlock(&GlobalSMBSeslock); | |
1124 | return NULL; | |
1125 | } | |
1126 | ||
1127 | static struct cifsTconInfo * | |
1128 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1129 | { | |
1130 | struct list_head *tmp; | |
1131 | struct cifsTconInfo *tcon; | |
1132 | ||
1133 | read_lock(&GlobalSMBSeslock); | |
1134 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
1135 | cFYI(1, ("Next tcon - ")); | |
1136 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
1137 | if (tcon->ses) { | |
1138 | if (tcon->ses->server) { | |
1139 | cFYI(1, | |
1140 | (" old ip addr: %x == new ip %x ?", | |
1141 | tcon->ses->server->addr.sockAddr.sin_addr. | |
1142 | s_addr, new_target_ip_addr)); | |
1143 | if (tcon->ses->server->addr.sockAddr.sin_addr. | |
1144 | s_addr == new_target_ip_addr) { | |
1145 | /* BB lock tcon and server and tcp session and increment use count here? */ | |
1146 | /* found a match on the TCP session */ | |
1147 | /* BB check if reconnection needed */ | |
1148 | cFYI(1,("Matched ip, old UNC: %s == new: %s ?", | |
1149 | tcon->treeName, uncName)); | |
1150 | if (strncmp | |
1151 | (tcon->treeName, uncName, | |
1152 | MAX_TREE_SIZE) == 0) { | |
1153 | cFYI(1, | |
1154 | ("Matched UNC, old user: %s == new: %s ?", | |
1155 | tcon->treeName, uncName)); | |
1156 | if (strncmp | |
1157 | (tcon->ses->userName, | |
1158 | userName, | |
1159 | MAX_USERNAME_SIZE) == 0) { | |
1160 | read_unlock(&GlobalSMBSeslock); | |
1161 | return tcon;/* also matched user (smb session)*/ | |
1162 | } | |
1163 | } | |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | } | |
1168 | read_unlock(&GlobalSMBSeslock); | |
1169 | return NULL; | |
1170 | } | |
1171 | ||
1172 | int | |
1173 | connect_to_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
737b758c SF |
1174 | const char *old_path, const struct nls_table *nls_codepage, |
1175 | int remap) | |
1da177e4 LT |
1176 | { |
1177 | unsigned char *referrals = NULL; | |
1178 | unsigned int num_referrals; | |
1179 | int rc = 0; | |
1180 | ||
1181 | rc = get_dfs_path(xid, pSesInfo,old_path, nls_codepage, | |
737b758c | 1182 | &num_referrals, &referrals, remap); |
1da177e4 LT |
1183 | |
1184 | /* BB Add in code to: if valid refrl, if not ip address contact | |
1185 | the helper that resolves tcp names, mount to it, try to | |
1186 | tcon to it unmount it if fail */ | |
1187 | ||
1188 | if(referrals) | |
1189 | kfree(referrals); | |
1190 | ||
1191 | return rc; | |
1192 | } | |
1193 | ||
1194 | int | |
1195 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, | |
1196 | const char *old_path, const struct nls_table *nls_codepage, | |
737b758c SF |
1197 | unsigned int *pnum_referrals, |
1198 | unsigned char ** preferrals, int remap) | |
1da177e4 LT |
1199 | { |
1200 | char *temp_unc; | |
1201 | int rc = 0; | |
1202 | ||
1203 | *pnum_referrals = 0; | |
1204 | ||
1205 | if (pSesInfo->ipc_tid == 0) { | |
1206 | temp_unc = kmalloc(2 /* for slashes */ + | |
1207 | strnlen(pSesInfo->serverName,SERVER_NAME_LEN_WITH_NULL * 2) | |
1208 | + 1 + 4 /* slash IPC$ */ + 2, | |
1209 | GFP_KERNEL); | |
1210 | if (temp_unc == NULL) | |
1211 | return -ENOMEM; | |
1212 | temp_unc[0] = '\\'; | |
1213 | temp_unc[1] = '\\'; | |
1214 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1215 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1216 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1217 | cFYI(1, | |
1218 | ("CIFS Tcon rc = %d ipc_tid = %d", rc,pSesInfo->ipc_tid)); | |
1219 | kfree(temp_unc); | |
1220 | } | |
1221 | if (rc == 0) | |
1222 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, | |
737b758c | 1223 | pnum_referrals, nls_codepage, remap); |
1da177e4 LT |
1224 | |
1225 | return rc; | |
1226 | } | |
1227 | ||
1228 | /* See RFC1001 section 14 on representation of Netbios names */ | |
1229 | static void rfc1002mangle(char * target,char * source, unsigned int length) | |
1230 | { | |
1231 | unsigned int i,j; | |
1232 | ||
1233 | for(i=0,j=0;i<(length);i++) { | |
1234 | /* mask a nibble at a time and encode */ | |
1235 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1236 | target[j+1] = 'A' + (0x0F & source[i]); | |
1237 | j+=2; | |
1238 | } | |
1239 | ||
1240 | } | |
1241 | ||
1242 | ||
1243 | static int | |
1244 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, | |
1245 | char * netbios_name) | |
1246 | { | |
1247 | int rc = 0; | |
1248 | int connected = 0; | |
1249 | __be16 orig_port = 0; | |
1250 | ||
1251 | if(*csocket == NULL) { | |
1252 | rc = sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1253 | if (rc < 0) { | |
1254 | cERROR(1, ("Error %d creating socket",rc)); | |
1255 | *csocket = NULL; | |
1256 | return rc; | |
1257 | } else { | |
1258 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1259 | cFYI(1,("Socket created")); | |
1260 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1261 | } | |
1262 | } | |
1263 | ||
1264 | psin_server->sin_family = AF_INET; | |
1265 | if(psin_server->sin_port) { /* user overrode default port */ | |
1266 | rc = (*csocket)->ops->connect(*csocket, | |
1267 | (struct sockaddr *) psin_server, | |
1268 | sizeof (struct sockaddr_in),0); | |
1269 | if (rc >= 0) | |
1270 | connected = 1; | |
1271 | } | |
1272 | ||
1273 | if(!connected) { | |
1274 | /* save original port so we can retry user specified port | |
1275 | later if fall back ports fail this time */ | |
1276 | orig_port = psin_server->sin_port; | |
1277 | ||
1278 | /* do not retry on the same port we just failed on */ | |
1279 | if(psin_server->sin_port != htons(CIFS_PORT)) { | |
1280 | psin_server->sin_port = htons(CIFS_PORT); | |
1281 | ||
1282 | rc = (*csocket)->ops->connect(*csocket, | |
1283 | (struct sockaddr *) psin_server, | |
1284 | sizeof (struct sockaddr_in),0); | |
1285 | if (rc >= 0) | |
1286 | connected = 1; | |
1287 | } | |
1288 | } | |
1289 | if (!connected) { | |
1290 | psin_server->sin_port = htons(RFC1001_PORT); | |
1291 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1292 | psin_server, sizeof (struct sockaddr_in),0); | |
1293 | if (rc >= 0) | |
1294 | connected = 1; | |
1295 | } | |
1296 | ||
1297 | /* give up here - unless we want to retry on different | |
1298 | protocol families some day */ | |
1299 | if (!connected) { | |
1300 | if(orig_port) | |
1301 | psin_server->sin_port = orig_port; | |
1302 | cFYI(1,("Error %d connecting to server via ipv4",rc)); | |
1303 | sock_release(*csocket); | |
1304 | *csocket = NULL; | |
1305 | return rc; | |
1306 | } | |
1307 | /* Eventually check for other socket options to change from | |
1308 | the default. sock_setsockopt not used because it expects | |
1309 | user space buffer */ | |
1310 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1311 | ||
1312 | /* send RFC1001 sessinit */ | |
1313 | ||
1314 | if(psin_server->sin_port == htons(RFC1001_PORT)) { | |
1315 | /* some servers require RFC1001 sessinit before sending | |
1316 | negprot - BB check reconnection in case where second | |
1317 | sessinit is sent but no second negprot */ | |
1318 | struct rfc1002_session_packet * ses_init_buf; | |
1319 | struct smb_hdr * smb_buf; | |
433dc24f | 1320 | ses_init_buf = kcalloc(1, sizeof(struct rfc1002_session_packet), GFP_KERNEL); |
1da177e4 LT |
1321 | if(ses_init_buf) { |
1322 | ses_init_buf->trailer.session_req.called_len = 32; | |
1323 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
1324 | DEFAULT_CIFS_CALLED_NAME,16); | |
1325 | ses_init_buf->trailer.session_req.calling_len = 32; | |
1326 | /* calling name ends in null (byte 16) from old smb | |
1327 | convention. */ | |
1328 | if(netbios_name && (netbios_name[0] !=0)) { | |
1329 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1330 | netbios_name,16); | |
1331 | } else { | |
1332 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
1333 | "LINUX_CIFS_CLNT",16); | |
1334 | } | |
1335 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1336 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1337 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1338 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1339 | smb_buf->smb_buf_length = 0x81000044; | |
1340 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1341 | (struct sockaddr *)psin_server); | |
1342 | kfree(ses_init_buf); | |
1343 | } | |
1344 | /* else the negprot may still work without this | |
1345 | even though malloc failed */ | |
1346 | ||
1347 | } | |
1348 | ||
1349 | return rc; | |
1350 | } | |
1351 | ||
1352 | static int | |
1353 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1354 | { | |
1355 | int rc = 0; | |
1356 | int connected = 0; | |
1357 | __be16 orig_port = 0; | |
1358 | ||
1359 | if(*csocket == NULL) { | |
1360 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, IPPROTO_TCP, csocket); | |
1361 | if (rc < 0) { | |
1362 | cERROR(1, ("Error %d creating ipv6 socket",rc)); | |
1363 | *csocket = NULL; | |
1364 | return rc; | |
1365 | } else { | |
1366 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
1367 | cFYI(1,("ipv6 Socket created")); | |
1368 | (*csocket)->sk->sk_allocation = GFP_NOFS; | |
1369 | } | |
1370 | } | |
1371 | ||
1372 | psin_server->sin6_family = AF_INET6; | |
1373 | ||
1374 | if(psin_server->sin6_port) { /* user overrode default port */ | |
1375 | rc = (*csocket)->ops->connect(*csocket, | |
1376 | (struct sockaddr *) psin_server, | |
1377 | sizeof (struct sockaddr_in6),0); | |
1378 | if (rc >= 0) | |
1379 | connected = 1; | |
1380 | } | |
1381 | ||
1382 | if(!connected) { | |
1383 | /* save original port so we can retry user specified port | |
1384 | later if fall back ports fail this time */ | |
1385 | ||
1386 | orig_port = psin_server->sin6_port; | |
1387 | /* do not retry on the same port we just failed on */ | |
1388 | if(psin_server->sin6_port != htons(CIFS_PORT)) { | |
1389 | psin_server->sin6_port = htons(CIFS_PORT); | |
1390 | ||
1391 | rc = (*csocket)->ops->connect(*csocket, | |
1392 | (struct sockaddr *) psin_server, | |
1393 | sizeof (struct sockaddr_in6),0); | |
1394 | if (rc >= 0) | |
1395 | connected = 1; | |
1396 | } | |
1397 | } | |
1398 | if (!connected) { | |
1399 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1400 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
1401 | psin_server, sizeof (struct sockaddr_in6),0); | |
1402 | if (rc >= 0) | |
1403 | connected = 1; | |
1404 | } | |
1405 | ||
1406 | /* give up here - unless we want to retry on different | |
1407 | protocol families some day */ | |
1408 | if (!connected) { | |
1409 | if(orig_port) | |
1410 | psin_server->sin6_port = orig_port; | |
1411 | cFYI(1,("Error %d connecting to server via ipv6",rc)); | |
1412 | sock_release(*csocket); | |
1413 | *csocket = NULL; | |
1414 | return rc; | |
1415 | } | |
1416 | /* Eventually check for other socket options to change from | |
1417 | the default. sock_setsockopt not used because it expects | |
1418 | user space buffer */ | |
1419 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
1420 | ||
1421 | return rc; | |
1422 | } | |
1423 | ||
1424 | int | |
1425 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1426 | char *mount_data, const char *devname) | |
1427 | { | |
1428 | int rc = 0; | |
1429 | int xid; | |
1430 | int address_type = AF_INET; | |
1431 | struct socket *csocket = NULL; | |
1432 | struct sockaddr_in sin_server; | |
1433 | struct sockaddr_in6 sin_server6; | |
1434 | struct smb_vol volume_info; | |
1435 | struct cifsSesInfo *pSesInfo = NULL; | |
1436 | struct cifsSesInfo *existingCifsSes = NULL; | |
1437 | struct cifsTconInfo *tcon = NULL; | |
1438 | struct TCP_Server_Info *srvTcp = NULL; | |
1439 | ||
1440 | xid = GetXid(); | |
1441 | ||
1442 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
1443 | ||
1444 | memset(&volume_info,0,sizeof(struct smb_vol)); | |
1445 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { | |
1446 | if(volume_info.UNC) | |
1447 | kfree(volume_info.UNC); | |
1448 | if(volume_info.password) | |
1449 | kfree(volume_info.password); | |
1450 | FreeXid(xid); | |
1451 | return -EINVAL; | |
1452 | } | |
1453 | ||
1454 | if (volume_info.username) { | |
1455 | /* BB fixme parse for domain name here */ | |
1456 | cFYI(1, ("Username: %s ", volume_info.username)); | |
1457 | ||
1458 | } else { | |
1459 | cifserror("No username specified "); | |
1460 | /* In userspace mount helper we can get user name from alternate | |
1461 | locations such as env variables and files on disk */ | |
1462 | if(volume_info.UNC) | |
1463 | kfree(volume_info.UNC); | |
1464 | if(volume_info.password) | |
1465 | kfree(volume_info.password); | |
1466 | FreeXid(xid); | |
1467 | return -EINVAL; | |
1468 | } | |
1469 | ||
1470 | if (volume_info.UNCip && volume_info.UNC) { | |
1471 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip,&sin_server.sin_addr.s_addr); | |
1472 | ||
1473 | if(rc <= 0) { | |
1474 | /* not ipv4 address, try ipv6 */ | |
1475 | rc = cifs_inet_pton(AF_INET6,volume_info.UNCip,&sin_server6.sin6_addr.in6_u); | |
1476 | if(rc > 0) | |
1477 | address_type = AF_INET6; | |
1478 | } else { | |
1479 | address_type = AF_INET; | |
1480 | } | |
1481 | ||
1482 | if(rc <= 0) { | |
1483 | /* we failed translating address */ | |
1484 | if(volume_info.UNC) | |
1485 | kfree(volume_info.UNC); | |
1486 | if(volume_info.password) | |
1487 | kfree(volume_info.password); | |
1488 | FreeXid(xid); | |
1489 | return -EINVAL; | |
1490 | } | |
1491 | ||
1492 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1493 | /* success */ | |
1494 | rc = 0; | |
1495 | } else if (volume_info.UNCip){ | |
1496 | /* BB using ip addr as server name connect to the DFS root below */ | |
1497 | cERROR(1,("Connecting to DFS root not implemented yet")); | |
1498 | if(volume_info.UNC) | |
1499 | kfree(volume_info.UNC); | |
1500 | if(volume_info.password) | |
1501 | kfree(volume_info.password); | |
1502 | FreeXid(xid); | |
1503 | return -EINVAL; | |
1504 | } else /* which servers DFS root would we conect to */ { | |
1505 | cERROR(1, | |
1506 | ("CIFS mount error: No UNC path (e.g. -o unc=//192.168.1.100/public) specified ")); | |
1507 | if(volume_info.UNC) | |
1508 | kfree(volume_info.UNC); | |
1509 | if(volume_info.password) | |
1510 | kfree(volume_info.password); | |
1511 | FreeXid(xid); | |
1512 | return -EINVAL; | |
1513 | } | |
1514 | ||
1515 | /* this is needed for ASCII cp to Unicode converts */ | |
1516 | if(volume_info.iocharset == NULL) { | |
1517 | cifs_sb->local_nls = load_nls_default(); | |
1518 | /* load_nls_default can not return null */ | |
1519 | } else { | |
1520 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
1521 | if(cifs_sb->local_nls == NULL) { | |
1522 | cERROR(1,("CIFS mount error: iocharset %s not found",volume_info.iocharset)); | |
1523 | if(volume_info.UNC) | |
1524 | kfree(volume_info.UNC); | |
1525 | if(volume_info.password) | |
1526 | kfree(volume_info.password); | |
1527 | FreeXid(xid); | |
1528 | return -ELIBACC; | |
1529 | } | |
1530 | } | |
1531 | ||
1532 | if(address_type == AF_INET) | |
1533 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, | |
1534 | NULL /* no ipv6 addr */, | |
1535 | volume_info.username, &srvTcp); | |
1536 | else if(address_type == AF_INET6) | |
1537 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, | |
1538 | &sin_server6.sin6_addr, | |
1539 | volume_info.username, &srvTcp); | |
1540 | else { | |
1541 | if(volume_info.UNC) | |
1542 | kfree(volume_info.UNC); | |
1543 | if(volume_info.password) | |
1544 | kfree(volume_info.password); | |
1545 | FreeXid(xid); | |
1546 | return -EINVAL; | |
1547 | } | |
1548 | ||
1549 | ||
1550 | if (srvTcp) { | |
1551 | cFYI(1, ("Existing tcp session with server found ")); | |
1552 | } else { /* create socket */ | |
1553 | if(volume_info.port) | |
1554 | sin_server.sin_port = htons(volume_info.port); | |
1555 | else | |
1556 | sin_server.sin_port = 0; | |
1557 | rc = ipv4_connect(&sin_server,&csocket,volume_info.source_rfc1001_name); | |
1558 | if (rc < 0) { | |
1559 | cERROR(1, | |
1560 | ("Error connecting to IPv4 socket. Aborting operation")); | |
1561 | if(csocket != NULL) | |
1562 | sock_release(csocket); | |
1563 | if(volume_info.UNC) | |
1564 | kfree(volume_info.UNC); | |
1565 | if(volume_info.password) | |
1566 | kfree(volume_info.password); | |
1567 | FreeXid(xid); | |
1568 | return rc; | |
1569 | } | |
1570 | ||
1571 | srvTcp = kmalloc(sizeof (struct TCP_Server_Info), GFP_KERNEL); | |
1572 | if (srvTcp == NULL) { | |
1573 | rc = -ENOMEM; | |
1574 | sock_release(csocket); | |
1575 | if(volume_info.UNC) | |
1576 | kfree(volume_info.UNC); | |
1577 | if(volume_info.password) | |
1578 | kfree(volume_info.password); | |
1579 | FreeXid(xid); | |
1580 | return rc; | |
1581 | } else { | |
1582 | memset(srvTcp, 0, sizeof (struct TCP_Server_Info)); | |
1583 | memcpy(&srvTcp->addr.sockAddr, &sin_server, sizeof (struct sockaddr_in)); | |
1584 | atomic_set(&srvTcp->inFlight,0); | |
1585 | /* BB Add code for ipv6 case too */ | |
1586 | srvTcp->ssocket = csocket; | |
1587 | srvTcp->protocolType = IPV4; | |
1588 | init_waitqueue_head(&srvTcp->response_q); | |
1589 | init_waitqueue_head(&srvTcp->request_q); | |
1590 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1591 | /* at this point we are the only ones with the pointer | |
1592 | to the struct since the kernel thread not created yet | |
1593 | so no need to spinlock this init of tcpStatus */ | |
1594 | srvTcp->tcpStatus = CifsNew; | |
1595 | init_MUTEX(&srvTcp->tcpSem); | |
1596 | rc = (int)kernel_thread((void *)(void *)cifs_demultiplex_thread, srvTcp, | |
1597 | CLONE_FS | CLONE_FILES | CLONE_VM); | |
1598 | if(rc < 0) { | |
1599 | rc = -ENOMEM; | |
1600 | sock_release(csocket); | |
1601 | if(volume_info.UNC) | |
1602 | kfree(volume_info.UNC); | |
1603 | if(volume_info.password) | |
1604 | kfree(volume_info.password); | |
1605 | FreeXid(xid); | |
1606 | return rc; | |
1607 | } else | |
1608 | rc = 0; | |
1609 | memcpy(srvTcp->workstation_RFC1001_name, volume_info.source_rfc1001_name,16); | |
ad009ac9 | 1610 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1611 | } |
1612 | } | |
1613 | ||
1614 | if (existingCifsSes) { | |
1615 | pSesInfo = existingCifsSes; | |
1616 | cFYI(1, ("Existing smb sess found ")); | |
1617 | if(volume_info.password) | |
1618 | kfree(volume_info.password); | |
1619 | /* volume_info.UNC freed at end of function */ | |
1620 | } else if (!rc) { | |
1621 | cFYI(1, ("Existing smb sess not found ")); | |
1622 | pSesInfo = sesInfoAlloc(); | |
1623 | if (pSesInfo == NULL) | |
1624 | rc = -ENOMEM; | |
1625 | else { | |
1626 | pSesInfo->server = srvTcp; | |
1627 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
1628 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
1629 | } | |
1630 | ||
1631 | if (!rc){ | |
1632 | /* volume_info.password freed at unmount */ | |
1633 | if (volume_info.password) | |
1634 | pSesInfo->password = volume_info.password; | |
1635 | if (volume_info.username) | |
1636 | strncpy(pSesInfo->userName, | |
1637 | volume_info.username,MAX_USERNAME_SIZE); | |
1638 | if (volume_info.domainname) | |
1639 | strncpy(pSesInfo->domainName, | |
1640 | volume_info.domainname,MAX_USERNAME_SIZE); | |
1641 | pSesInfo->linux_uid = volume_info.linux_uid; | |
1642 | down(&pSesInfo->sesSem); | |
1643 | rc = cifs_setup_session(xid,pSesInfo, cifs_sb->local_nls); | |
1644 | up(&pSesInfo->sesSem); | |
1645 | if(!rc) | |
1646 | atomic_inc(&srvTcp->socketUseCount); | |
1647 | } else | |
1648 | if(volume_info.password) | |
1649 | kfree(volume_info.password); | |
1650 | } | |
1651 | ||
1652 | /* search for existing tcon to this server share */ | |
1653 | if (!rc) { | |
1654 | if((volume_info.rsize) && (volume_info.rsize <= CIFSMaxBufSize)) | |
1655 | cifs_sb->rsize = volume_info.rsize; | |
1656 | else | |
1657 | cifs_sb->rsize = srvTcp->maxBuf - MAX_CIFS_HDR_SIZE; /* default */ | |
1658 | if((volume_info.wsize) && (volume_info.wsize <= CIFSMaxBufSize)) | |
1659 | cifs_sb->wsize = volume_info.wsize; | |
1660 | else | |
1661 | cifs_sb->wsize = CIFSMaxBufSize; /* default */ | |
1662 | if(cifs_sb->rsize < PAGE_CACHE_SIZE) { | |
1663 | cifs_sb->rsize = PAGE_CACHE_SIZE; | |
1664 | cERROR(1,("Attempt to set readsize for mount to less than one page (4096)")); | |
1665 | } | |
1666 | cifs_sb->mnt_uid = volume_info.linux_uid; | |
1667 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
1668 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
1669 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
1670 | cFYI(1,("file mode: 0x%x dir mode: 0x%x",cifs_sb->mnt_file_mode,cifs_sb->mnt_dir_mode)); | |
1671 | ||
1672 | if(volume_info.noperm) | |
1673 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; | |
1674 | if(volume_info.setuids) | |
1675 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; | |
1676 | if(volume_info.server_ino) | |
1677 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; | |
6a0b4824 SF |
1678 | if(volume_info.remap) |
1679 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; | |
1da177e4 LT |
1680 | if(volume_info.no_xattr) |
1681 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; | |
1682 | if(volume_info.direct_io) { | |
1683 | cERROR(1,("mounting share using direct i/o")); | |
1684 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; | |
1685 | } | |
1686 | ||
1687 | tcon = | |
1688 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
1689 | volume_info.username); | |
1690 | if (tcon) { | |
1691 | cFYI(1, ("Found match on UNC path ")); | |
1692 | /* we can have only one retry value for a connection | |
1693 | to a share so for resources mounted more than once | |
1694 | to the same server share the last value passed in | |
1695 | for the retry flag is used */ | |
1696 | tcon->retry = volume_info.retry; | |
1697 | } else { | |
1698 | tcon = tconInfoAlloc(); | |
1699 | if (tcon == NULL) | |
1700 | rc = -ENOMEM; | |
1701 | else { | |
1702 | /* check for null share name ie connect to dfs root */ | |
1703 | ||
1704 | /* BB check if this works for exactly length three strings */ | |
1705 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) | |
1706 | && (strchr(volume_info.UNC + 3, '/') == | |
1707 | NULL)) { | |
737b758c SF |
1708 | rc = connect_to_dfs_path(xid, pSesInfo, |
1709 | "", cifs_sb->local_nls, | |
1710 | cifs_sb->mnt_cifs_flags & | |
1711 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 LT |
1712 | if(volume_info.UNC) |
1713 | kfree(volume_info.UNC); | |
1714 | FreeXid(xid); | |
1715 | return -ENODEV; | |
1716 | } else { | |
1717 | rc = CIFSTCon(xid, pSesInfo, | |
1718 | volume_info.UNC, | |
1719 | tcon, cifs_sb->local_nls); | |
1720 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
1721 | } | |
1722 | if (!rc) { | |
1723 | atomic_inc(&pSesInfo->inUse); | |
1724 | tcon->retry = volume_info.retry; | |
1725 | } | |
1726 | } | |
1727 | } | |
1728 | } | |
1729 | if(pSesInfo) { | |
1730 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { | |
1731 | sb->s_maxbytes = (u64) 1 << 63; | |
1732 | } else | |
1733 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
1734 | } | |
1735 | ||
1736 | sb->s_time_gran = 100; | |
1737 | ||
1738 | /* on error free sesinfo and tcon struct if needed */ | |
1739 | if (rc) { | |
1740 | /* if session setup failed, use count is zero but | |
1741 | we still need to free cifsd thread */ | |
1742 | if(atomic_read(&srvTcp->socketUseCount) == 0) { | |
1743 | spin_lock(&GlobalMid_Lock); | |
1744 | srvTcp->tcpStatus = CifsExiting; | |
1745 | spin_unlock(&GlobalMid_Lock); | |
1746 | if(srvTcp->tsk) | |
1747 | send_sig(SIGKILL,srvTcp->tsk,1); | |
1748 | } | |
1749 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
1750 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
1751 | tconInfoFree(tcon); | |
1752 | if (existingCifsSes == NULL) { | |
1753 | if (pSesInfo) { | |
1754 | if ((pSesInfo->server) && | |
1755 | (pSesInfo->status == CifsGood)) { | |
1756 | int temp_rc; | |
1757 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
1758 | /* if the socketUseCount is now zero */ | |
1759 | if((temp_rc == -ESHUTDOWN) && | |
1760 | (pSesInfo->server->tsk)) | |
1761 | send_sig(SIGKILL,pSesInfo->server->tsk,1); | |
1762 | } else | |
1763 | cFYI(1, ("No session or bad tcon")); | |
1764 | sesInfoFree(pSesInfo); | |
1765 | /* pSesInfo = NULL; */ | |
1766 | } | |
1767 | } | |
1768 | } else { | |
1769 | atomic_inc(&tcon->useCount); | |
1770 | cifs_sb->tcon = tcon; | |
1771 | tcon->ses = pSesInfo; | |
1772 | ||
1773 | /* do not care if following two calls succeed - informational only */ | |
737b758c SF |
1774 | CIFSSMBQFSDeviceInfo(xid, tcon); |
1775 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
1da177e4 | 1776 | if (tcon->ses->capabilities & CAP_UNIX) { |
737b758c | 1777 | if(!CIFSSMBQFSUnixInfo(xid, tcon)) { |
1da177e4 LT |
1778 | if(!volume_info.no_psx_acl) { |
1779 | if(CIFS_UNIX_POSIX_ACL_CAP & | |
1780 | le64_to_cpu(tcon->fsUnixInfo.Capability)) | |
1781 | cFYI(1,("server negotiated posix acl support")); | |
1782 | sb->s_flags |= MS_POSIXACL; | |
1783 | } | |
1784 | } | |
1785 | } | |
1786 | } | |
1787 | ||
1788 | /* volume_info.password is freed above when existing session found | |
1789 | (in which case it is not needed anymore) but when new sesion is created | |
1790 | the password ptr is put in the new session structure (in which case the | |
1791 | password will be freed at unmount time) */ | |
1792 | if(volume_info.UNC) | |
1793 | kfree(volume_info.UNC); | |
1794 | FreeXid(xid); | |
1795 | return rc; | |
1796 | } | |
1797 | ||
1798 | static int | |
1799 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
1800 | char session_key[CIFS_SESSION_KEY_SIZE], | |
1801 | const struct nls_table *nls_codepage) | |
1802 | { | |
1803 | struct smb_hdr *smb_buffer; | |
1804 | struct smb_hdr *smb_buffer_response; | |
1805 | SESSION_SETUP_ANDX *pSMB; | |
1806 | SESSION_SETUP_ANDX *pSMBr; | |
1807 | char *bcc_ptr; | |
1808 | char *user; | |
1809 | char *domain; | |
1810 | int rc = 0; | |
1811 | int remaining_words = 0; | |
1812 | int bytes_returned = 0; | |
1813 | int len; | |
1814 | __u32 capabilities; | |
1815 | __u16 count; | |
1816 | ||
1817 | cFYI(1, ("In sesssetup ")); | |
1818 | if(ses == NULL) | |
1819 | return -EINVAL; | |
1820 | user = ses->userName; | |
1821 | domain = ses->domainName; | |
1822 | smb_buffer = cifs_buf_get(); | |
1823 | if (smb_buffer == NULL) { | |
1824 | return -ENOMEM; | |
1825 | } | |
1826 | smb_buffer_response = smb_buffer; | |
1827 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
1828 | ||
1829 | /* send SMBsessionSetup here */ | |
1830 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
1831 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
1832 | ||
1833 | pSMB->req_no_secext.AndXCommand = 0xFF; | |
1834 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
1835 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
1836 | ||
1837 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1838 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
1839 | ||
1840 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
1841 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
1842 | if (ses->capabilities & CAP_UNICODE) { | |
1843 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
1844 | capabilities |= CAP_UNICODE; | |
1845 | } | |
1846 | if (ses->capabilities & CAP_STATUS32) { | |
1847 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
1848 | capabilities |= CAP_STATUS32; | |
1849 | } | |
1850 | if (ses->capabilities & CAP_DFS) { | |
1851 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
1852 | capabilities |= CAP_DFS; | |
1853 | } | |
1854 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
1855 | ||
1856 | pSMB->req_no_secext.CaseInsensitivePasswordLength = | |
1857 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
1858 | ||
1859 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
1860 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
1861 | bcc_ptr = pByteArea(smb_buffer); | |
1862 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE); | |
1863 | bcc_ptr += CIFS_SESSION_KEY_SIZE; | |
1864 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESSION_KEY_SIZE); | |
1865 | bcc_ptr += CIFS_SESSION_KEY_SIZE; | |
1866 | ||
1867 | if (ses->capabilities & CAP_UNICODE) { | |
1868 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
1869 | *bcc_ptr = 0; | |
1870 | bcc_ptr++; | |
1871 | } | |
1872 | if(user == NULL) | |
1873 | bytes_returned = 0; /* skill null user */ | |
1874 | else | |
1875 | bytes_returned = | |
1876 | cifs_strtoUCS((wchar_t *) bcc_ptr, user, 100, | |
1877 | nls_codepage); | |
1878 | /* convert number of 16 bit words to bytes */ | |
1879 | bcc_ptr += 2 * bytes_returned; | |
1880 | bcc_ptr += 2; /* trailing null */ | |
1881 | if (domain == NULL) | |
1882 | bytes_returned = | |
1883 | cifs_strtoUCS((wchar_t *) bcc_ptr, | |
1884 | "CIFS_LINUX_DOM", 32, nls_codepage); | |
1885 | else | |
1886 | bytes_returned = | |
1887 | cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64, | |
1888 | nls_codepage); | |
1889 | bcc_ptr += 2 * bytes_returned; | |
1890 | bcc_ptr += 2; | |
1891 | bytes_returned = | |
1892 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
1893 | 32, nls_codepage); | |
1894 | bcc_ptr += 2 * bytes_returned; | |
1895 | bytes_returned = | |
1896 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, | |
1897 | 32, nls_codepage); | |
1898 | bcc_ptr += 2 * bytes_returned; | |
1899 | bcc_ptr += 2; | |
1900 | bytes_returned = | |
1901 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
1902 | 64, nls_codepage); | |
1903 | bcc_ptr += 2 * bytes_returned; | |
1904 | bcc_ptr += 2; | |
1905 | } else { | |
1906 | if(user != NULL) { | |
1907 | strncpy(bcc_ptr, user, 200); | |
1908 | bcc_ptr += strnlen(user, 200); | |
1909 | } | |
1910 | *bcc_ptr = 0; | |
1911 | bcc_ptr++; | |
1912 | if (domain == NULL) { | |
1913 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
1914 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
1915 | } else { | |
1916 | strncpy(bcc_ptr, domain, 64); | |
1917 | bcc_ptr += strnlen(domain, 64); | |
1918 | *bcc_ptr = 0; | |
1919 | bcc_ptr++; | |
1920 | } | |
1921 | strcpy(bcc_ptr, "Linux version "); | |
1922 | bcc_ptr += strlen("Linux version "); | |
1923 | strcpy(bcc_ptr, system_utsname.release); | |
1924 | bcc_ptr += strlen(system_utsname.release) + 1; | |
1925 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
1926 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
1927 | } | |
1928 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
1929 | smb_buffer->smb_buf_length += count; | |
1930 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
1931 | ||
1932 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
1933 | &bytes_returned, 1); | |
1934 | if (rc) { | |
1935 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
1936 | } else if ((smb_buffer_response->WordCount == 3) | |
1937 | || (smb_buffer_response->WordCount == 4)) { | |
1938 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
1939 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
1940 | if (action & GUEST_LOGIN) | |
1941 | cFYI(1, (" Guest login")); /* do we want to mark SesInfo struct ? */ | |
1942 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
1943 | cFYI(1, ("UID = %d ", ses->Suid)); | |
1944 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1945 | bcc_ptr = pByteArea(smb_buffer_response); | |
1946 | if ((pSMBr->resp.hdr.WordCount == 3) | |
1947 | || ((pSMBr->resp.hdr.WordCount == 4) | |
1948 | && (blob_len < pSMBr->resp.ByteCount))) { | |
1949 | if (pSMBr->resp.hdr.WordCount == 4) | |
1950 | bcc_ptr += blob_len; | |
1951 | ||
1952 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
1953 | if ((long) (bcc_ptr) % 2) { | |
1954 | remaining_words = | |
1955 | (BCC(smb_buffer_response) - 1) /2; | |
1956 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
1957 | } else { | |
1958 | remaining_words = | |
1959 | BCC(smb_buffer_response) / 2; | |
1960 | } | |
1961 | len = | |
1962 | UniStrnlen((wchar_t *) bcc_ptr, | |
1963 | remaining_words - 1); | |
1964 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
1965 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
1966 | terminating last Unicode string in response */ | |
433dc24f SF |
1967 | ses->serverOS = kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1968 | if(ses->serverOS == NULL) | |
1969 | goto sesssetup_nomem; | |
1da177e4 LT |
1970 | cifs_strfromUCS_le(ses->serverOS, |
1971 | (wchar_t *)bcc_ptr, len,nls_codepage); | |
1972 | bcc_ptr += 2 * (len + 1); | |
1973 | remaining_words -= len + 1; | |
1974 | ses->serverOS[2 * len] = 0; | |
1975 | ses->serverOS[1 + (2 * len)] = 0; | |
1976 | if (remaining_words > 0) { | |
1977 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
1978 | remaining_words-1); | |
433dc24f SF |
1979 | ses->serverNOS = kcalloc(1, 2 * (len + 1),GFP_KERNEL); |
1980 | if(ses->serverNOS == NULL) | |
1981 | goto sesssetup_nomem; | |
1da177e4 LT |
1982 | cifs_strfromUCS_le(ses->serverNOS, |
1983 | (wchar_t *)bcc_ptr,len,nls_codepage); | |
1984 | bcc_ptr += 2 * (len + 1); | |
1985 | ses->serverNOS[2 * len] = 0; | |
1986 | ses->serverNOS[1 + (2 * len)] = 0; | |
1987 | if(strncmp(ses->serverNOS, | |
1988 | "NT LAN Manager 4",16) == 0) { | |
1989 | cFYI(1,("NT4 server")); | |
1990 | ses->flags |= CIFS_SES_NT4; | |
1991 | } | |
1992 | remaining_words -= len + 1; | |
1993 | if (remaining_words > 0) { | |
433dc24f | 1994 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 LT |
1995 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ |
1996 | ses->serverDomain = | |
433dc24f SF |
1997 | kcalloc(1, 2*(len+1),GFP_KERNEL); |
1998 | if(ses->serverDomain == NULL) | |
1999 | goto sesssetup_nomem; | |
1da177e4 LT |
2000 | cifs_strfromUCS_le(ses->serverDomain, |
2001 | (wchar_t *)bcc_ptr,len,nls_codepage); | |
2002 | bcc_ptr += 2 * (len + 1); | |
2003 | ses->serverDomain[2*len] = 0; | |
2004 | ses->serverDomain[1+(2*len)] = 0; | |
2005 | } /* else no more room so create dummy domain string */ | |
2006 | else | |
433dc24f SF |
2007 | ses->serverDomain = |
2008 | kcalloc(1, 2, GFP_KERNEL); | |
1da177e4 | 2009 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2010 | /* if these kcallocs fail not much we |
2011 | can do, but better to not fail the | |
2012 | sesssetup itself */ | |
1da177e4 | 2013 | ses->serverDomain = |
433dc24f | 2014 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 | 2015 | ses->serverNOS = |
433dc24f | 2016 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 LT |
2017 | } |
2018 | } else { /* ASCII */ | |
2019 | len = strnlen(bcc_ptr, 1024); | |
2020 | if (((long) bcc_ptr + len) - (long) | |
2021 | pByteArea(smb_buffer_response) | |
2022 | <= BCC(smb_buffer_response)) { | |
433dc24f SF |
2023 | ses->serverOS = kcalloc(1, len + 1,GFP_KERNEL); |
2024 | if(ses->serverOS == NULL) | |
2025 | goto sesssetup_nomem; | |
1da177e4 LT |
2026 | strncpy(ses->serverOS,bcc_ptr, len); |
2027 | ||
2028 | bcc_ptr += len; | |
2029 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2030 | bcc_ptr++; | |
2031 | ||
2032 | len = strnlen(bcc_ptr, 1024); | |
433dc24f SF |
2033 | ses->serverNOS = kcalloc(1, len + 1,GFP_KERNEL); |
2034 | if(ses->serverNOS == NULL) | |
2035 | goto sesssetup_nomem; | |
1da177e4 LT |
2036 | strncpy(ses->serverNOS, bcc_ptr, len); |
2037 | bcc_ptr += len; | |
2038 | bcc_ptr[0] = 0; | |
2039 | bcc_ptr++; | |
2040 | ||
2041 | len = strnlen(bcc_ptr, 1024); | |
433dc24f SF |
2042 | ses->serverDomain = kcalloc(1, len + 1,GFP_KERNEL); |
2043 | if(ses->serverDomain == NULL) | |
2044 | goto sesssetup_nomem; | |
1da177e4 LT |
2045 | strncpy(ses->serverDomain, bcc_ptr, len); |
2046 | bcc_ptr += len; | |
2047 | bcc_ptr[0] = 0; | |
2048 | bcc_ptr++; | |
2049 | } else | |
2050 | cFYI(1, | |
2051 | ("Variable field of length %d extends beyond end of smb ", | |
2052 | len)); | |
2053 | } | |
2054 | } else { | |
2055 | cERROR(1, | |
2056 | (" Security Blob Length extends beyond end of SMB")); | |
2057 | } | |
2058 | } else { | |
2059 | cERROR(1, | |
2060 | (" Invalid Word count %d: ", | |
2061 | smb_buffer_response->WordCount)); | |
2062 | rc = -EIO; | |
2063 | } | |
433dc24f SF |
2064 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2065 | since that could make reconnection harder, and | |
2066 | reconnection might be needed to free memory */ | |
1da177e4 LT |
2067 | if (smb_buffer) |
2068 | cifs_buf_release(smb_buffer); | |
2069 | ||
2070 | return rc; | |
2071 | } | |
2072 | ||
2073 | static int | |
2074 | CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2075 | char *SecurityBlob,int SecurityBlobLength, | |
2076 | const struct nls_table *nls_codepage) | |
2077 | { | |
2078 | struct smb_hdr *smb_buffer; | |
2079 | struct smb_hdr *smb_buffer_response; | |
2080 | SESSION_SETUP_ANDX *pSMB; | |
2081 | SESSION_SETUP_ANDX *pSMBr; | |
2082 | char *bcc_ptr; | |
2083 | char *user; | |
2084 | char *domain; | |
2085 | int rc = 0; | |
2086 | int remaining_words = 0; | |
2087 | int bytes_returned = 0; | |
2088 | int len; | |
2089 | __u32 capabilities; | |
2090 | __u16 count; | |
2091 | ||
2092 | cFYI(1, ("In spnego sesssetup ")); | |
2093 | if(ses == NULL) | |
2094 | return -EINVAL; | |
2095 | user = ses->userName; | |
2096 | domain = ses->domainName; | |
2097 | ||
2098 | smb_buffer = cifs_buf_get(); | |
2099 | if (smb_buffer == NULL) { | |
2100 | return -ENOMEM; | |
2101 | } | |
2102 | smb_buffer_response = smb_buffer; | |
2103 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2104 | ||
2105 | /* send SMBsessionSetup here */ | |
2106 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2107 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
2108 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2109 | pSMB->req.AndXCommand = 0xFF; | |
2110 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2111 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2112 | ||
2113 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2114 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2115 | ||
2116 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2117 | CAP_EXTENDED_SECURITY; | |
2118 | if (ses->capabilities & CAP_UNICODE) { | |
2119 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2120 | capabilities |= CAP_UNICODE; | |
2121 | } | |
2122 | if (ses->capabilities & CAP_STATUS32) { | |
2123 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2124 | capabilities |= CAP_STATUS32; | |
2125 | } | |
2126 | if (ses->capabilities & CAP_DFS) { | |
2127 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2128 | capabilities |= CAP_DFS; | |
2129 | } | |
2130 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2131 | ||
2132 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2133 | bcc_ptr = pByteArea(smb_buffer); | |
2134 | memcpy(bcc_ptr, SecurityBlob, SecurityBlobLength); | |
2135 | bcc_ptr += SecurityBlobLength; | |
2136 | ||
2137 | if (ses->capabilities & CAP_UNICODE) { | |
2138 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode strings */ | |
2139 | *bcc_ptr = 0; | |
2140 | bcc_ptr++; | |
2141 | } | |
2142 | bytes_returned = | |
2143 | cifs_strtoUCS((wchar_t *) bcc_ptr, user, 100, nls_codepage); | |
2144 | bcc_ptr += 2 * bytes_returned; /* convert num of 16 bit words to bytes */ | |
2145 | bcc_ptr += 2; /* trailing null */ | |
2146 | if (domain == NULL) | |
2147 | bytes_returned = | |
2148 | cifs_strtoUCS((wchar_t *) bcc_ptr, | |
2149 | "CIFS_LINUX_DOM", 32, nls_codepage); | |
2150 | else | |
2151 | bytes_returned = | |
2152 | cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64, | |
2153 | nls_codepage); | |
2154 | bcc_ptr += 2 * bytes_returned; | |
2155 | bcc_ptr += 2; | |
2156 | bytes_returned = | |
2157 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
2158 | 32, nls_codepage); | |
2159 | bcc_ptr += 2 * bytes_returned; | |
2160 | bytes_returned = | |
2161 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32, | |
2162 | nls_codepage); | |
2163 | bcc_ptr += 2 * bytes_returned; | |
2164 | bcc_ptr += 2; | |
2165 | bytes_returned = | |
2166 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
2167 | 64, nls_codepage); | |
2168 | bcc_ptr += 2 * bytes_returned; | |
2169 | bcc_ptr += 2; | |
2170 | } else { | |
2171 | strncpy(bcc_ptr, user, 200); | |
2172 | bcc_ptr += strnlen(user, 200); | |
2173 | *bcc_ptr = 0; | |
2174 | bcc_ptr++; | |
2175 | if (domain == NULL) { | |
2176 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2177 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2178 | } else { | |
2179 | strncpy(bcc_ptr, domain, 64); | |
2180 | bcc_ptr += strnlen(domain, 64); | |
2181 | *bcc_ptr = 0; | |
2182 | bcc_ptr++; | |
2183 | } | |
2184 | strcpy(bcc_ptr, "Linux version "); | |
2185 | bcc_ptr += strlen("Linux version "); | |
2186 | strcpy(bcc_ptr, system_utsname.release); | |
2187 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2188 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2189 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2190 | } | |
2191 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2192 | smb_buffer->smb_buf_length += count; | |
2193 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2194 | ||
2195 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2196 | &bytes_returned, 1); | |
2197 | if (rc) { | |
2198 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2199 | } else if ((smb_buffer_response->WordCount == 3) | |
2200 | || (smb_buffer_response->WordCount == 4)) { | |
2201 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2202 | __u16 blob_len = | |
2203 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2204 | if (action & GUEST_LOGIN) | |
2205 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
2206 | if (ses) { | |
2207 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format (le) */ | |
2208 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2209 | bcc_ptr = pByteArea(smb_buffer_response); /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2210 | ||
2211 | /* BB Fix below to make endian neutral !! */ | |
2212 | ||
2213 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2214 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2215 | && (blob_len < | |
2216 | pSMBr->resp.ByteCount))) { | |
2217 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2218 | bcc_ptr += | |
2219 | blob_len; | |
2220 | cFYI(1, | |
2221 | ("Security Blob Length %d ", | |
2222 | blob_len)); | |
2223 | } | |
2224 | ||
2225 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2226 | if ((long) (bcc_ptr) % 2) { | |
2227 | remaining_words = | |
2228 | (BCC(smb_buffer_response) | |
2229 | - 1) / 2; | |
2230 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2231 | } else { | |
2232 | remaining_words = | |
2233 | BCC | |
2234 | (smb_buffer_response) / 2; | |
2235 | } | |
2236 | len = | |
2237 | UniStrnlen((wchar_t *) bcc_ptr, | |
2238 | remaining_words - 1); | |
2239 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2240 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2241 | terminating last Unicode string in response */ | |
2242 | ses->serverOS = | |
433dc24f | 2243 | kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1da177e4 LT |
2244 | cifs_strfromUCS_le(ses->serverOS, |
2245 | (wchar_t *) | |
2246 | bcc_ptr, len, | |
2247 | nls_codepage); | |
2248 | bcc_ptr += 2 * (len + 1); | |
2249 | remaining_words -= len + 1; | |
2250 | ses->serverOS[2 * len] = 0; | |
2251 | ses->serverOS[1 + (2 * len)] = 0; | |
2252 | if (remaining_words > 0) { | |
2253 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2254 | remaining_words | |
2255 | - 1); | |
2256 | ses->serverNOS = | |
433dc24f | 2257 | kcalloc(1, 2 * (len + 1), |
1da177e4 LT |
2258 | GFP_KERNEL); |
2259 | cifs_strfromUCS_le(ses->serverNOS, | |
2260 | (wchar_t *)bcc_ptr, | |
2261 | len, | |
2262 | nls_codepage); | |
2263 | bcc_ptr += 2 * (len + 1); | |
2264 | ses->serverNOS[2 * len] = 0; | |
2265 | ses->serverNOS[1 + (2 * len)] = 0; | |
2266 | remaining_words -= len + 1; | |
2267 | if (remaining_words > 0) { | |
2268 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2269 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
433dc24f | 2270 | ses->serverDomain = kcalloc(1, 2*(len+1),GFP_KERNEL); |
1da177e4 LT |
2271 | cifs_strfromUCS_le(ses->serverDomain, |
2272 | (wchar_t *)bcc_ptr, | |
2273 | len, | |
2274 | nls_codepage); | |
2275 | bcc_ptr += 2*(len+1); | |
2276 | ses->serverDomain[2*len] = 0; | |
2277 | ses->serverDomain[1+(2*len)] = 0; | |
2278 | } /* else no more room so create dummy domain string */ | |
2279 | else | |
2280 | ses->serverDomain = | |
433dc24f | 2281 | kcalloc(1, 2,GFP_KERNEL); |
1da177e4 | 2282 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
2283 | ses->serverDomain = kcalloc(1, 2, GFP_KERNEL); |
2284 | ses->serverNOS = kcalloc(1, 2, GFP_KERNEL); | |
1da177e4 LT |
2285 | } |
2286 | } else { /* ASCII */ | |
2287 | ||
2288 | len = strnlen(bcc_ptr, 1024); | |
2289 | if (((long) bcc_ptr + len) - (long) | |
2290 | pByteArea(smb_buffer_response) | |
2291 | <= BCC(smb_buffer_response)) { | |
433dc24f | 2292 | ses->serverOS = kcalloc(1, len + 1, GFP_KERNEL); |
1da177e4 LT |
2293 | strncpy(ses->serverOS, bcc_ptr, len); |
2294 | ||
2295 | bcc_ptr += len; | |
2296 | bcc_ptr[0] = 0; /* null terminate the string */ | |
2297 | bcc_ptr++; | |
2298 | ||
2299 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 2300 | ses->serverNOS = kcalloc(1, len + 1,GFP_KERNEL); |
1da177e4 LT |
2301 | strncpy(ses->serverNOS, bcc_ptr, len); |
2302 | bcc_ptr += len; | |
2303 | bcc_ptr[0] = 0; | |
2304 | bcc_ptr++; | |
2305 | ||
2306 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 2307 | ses->serverDomain = kcalloc(1, len + 1, GFP_KERNEL); |
1da177e4 LT |
2308 | strncpy(ses->serverDomain, bcc_ptr, len); |
2309 | bcc_ptr += len; | |
2310 | bcc_ptr[0] = 0; | |
2311 | bcc_ptr++; | |
2312 | } else | |
2313 | cFYI(1, | |
2314 | ("Variable field of length %d extends beyond end of smb ", | |
2315 | len)); | |
2316 | } | |
2317 | } else { | |
2318 | cERROR(1, | |
2319 | (" Security Blob Length extends beyond end of SMB")); | |
2320 | } | |
2321 | } else { | |
2322 | cERROR(1, ("No session structure passed in.")); | |
2323 | } | |
2324 | } else { | |
2325 | cERROR(1, | |
2326 | (" Invalid Word count %d: ", | |
2327 | smb_buffer_response->WordCount)); | |
2328 | rc = -EIO; | |
2329 | } | |
2330 | ||
2331 | if (smb_buffer) | |
2332 | cifs_buf_release(smb_buffer); | |
2333 | ||
2334 | return rc; | |
2335 | } | |
2336 | ||
2337 | static int | |
2338 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
2339 | struct cifsSesInfo *ses, int * pNTLMv2_flag, | |
2340 | const struct nls_table *nls_codepage) | |
2341 | { | |
2342 | struct smb_hdr *smb_buffer; | |
2343 | struct smb_hdr *smb_buffer_response; | |
2344 | SESSION_SETUP_ANDX *pSMB; | |
2345 | SESSION_SETUP_ANDX *pSMBr; | |
2346 | char *bcc_ptr; | |
2347 | char *domain; | |
2348 | int rc = 0; | |
2349 | int remaining_words = 0; | |
2350 | int bytes_returned = 0; | |
2351 | int len; | |
2352 | int SecurityBlobLength = sizeof (NEGOTIATE_MESSAGE); | |
2353 | PNEGOTIATE_MESSAGE SecurityBlob; | |
2354 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2355 | __u32 negotiate_flags, capabilities; | |
2356 | __u16 count; | |
2357 | ||
2358 | cFYI(1, ("In NTLMSSP sesssetup (negotiate) ")); | |
2359 | if(ses == NULL) | |
2360 | return -EINVAL; | |
2361 | domain = ses->domainName; | |
2362 | *pNTLMv2_flag = FALSE; | |
2363 | smb_buffer = cifs_buf_get(); | |
2364 | if (smb_buffer == NULL) { | |
2365 | return -ENOMEM; | |
2366 | } | |
2367 | smb_buffer_response = smb_buffer; | |
2368 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2369 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2370 | ||
2371 | /* send SMBsessionSetup here */ | |
2372 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2373 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
2374 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2375 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2376 | ||
2377 | pSMB->req.AndXCommand = 0xFF; | |
2378 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2379 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2380 | ||
2381 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2382 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2383 | ||
2384 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2385 | CAP_EXTENDED_SECURITY; | |
2386 | if (ses->capabilities & CAP_UNICODE) { | |
2387 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2388 | capabilities |= CAP_UNICODE; | |
2389 | } | |
2390 | if (ses->capabilities & CAP_STATUS32) { | |
2391 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2392 | capabilities |= CAP_STATUS32; | |
2393 | } | |
2394 | if (ses->capabilities & CAP_DFS) { | |
2395 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2396 | capabilities |= CAP_DFS; | |
2397 | } | |
2398 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2399 | ||
2400 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2401 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2402 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2403 | SecurityBlob->MessageType = NtLmNegotiate; | |
2404 | negotiate_flags = | |
2405 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
2406 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | 0x80000000 | | |
2407 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; | |
2408 | if(sign_CIFS_PDUs) | |
2409 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; | |
2410 | if(ntlmv2_support) | |
2411 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2412 | /* setup pointers to domain name and workstation name */ | |
2413 | bcc_ptr += SecurityBlobLength; | |
2414 | ||
2415 | SecurityBlob->WorkstationName.Buffer = 0; | |
2416 | SecurityBlob->WorkstationName.Length = 0; | |
2417 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2418 | ||
2419 | if (domain == NULL) { | |
2420 | SecurityBlob->DomainName.Buffer = 0; | |
2421 | SecurityBlob->DomainName.Length = 0; | |
2422 | SecurityBlob->DomainName.MaximumLength = 0; | |
2423 | } else { | |
2424 | __u16 len; | |
2425 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2426 | strncpy(bcc_ptr, domain, 63); | |
2427 | len = strnlen(domain, 64); | |
2428 | SecurityBlob->DomainName.MaximumLength = | |
2429 | cpu_to_le16(len); | |
2430 | SecurityBlob->DomainName.Buffer = | |
2431 | cpu_to_le32((long) &SecurityBlob-> | |
2432 | DomainString - | |
2433 | (long) &SecurityBlob->Signature); | |
2434 | bcc_ptr += len; | |
2435 | SecurityBlobLength += len; | |
2436 | SecurityBlob->DomainName.Length = | |
2437 | cpu_to_le16(len); | |
2438 | } | |
2439 | if (ses->capabilities & CAP_UNICODE) { | |
2440 | if ((long) bcc_ptr % 2) { | |
2441 | *bcc_ptr = 0; | |
2442 | bcc_ptr++; | |
2443 | } | |
2444 | ||
2445 | bytes_returned = | |
2446 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
2447 | 32, nls_codepage); | |
2448 | bcc_ptr += 2 * bytes_returned; | |
2449 | bytes_returned = | |
2450 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32, | |
2451 | nls_codepage); | |
2452 | bcc_ptr += 2 * bytes_returned; | |
2453 | bcc_ptr += 2; /* null terminate Linux version */ | |
2454 | bytes_returned = | |
2455 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
2456 | 64, nls_codepage); | |
2457 | bcc_ptr += 2 * bytes_returned; | |
2458 | *(bcc_ptr + 1) = 0; | |
2459 | *(bcc_ptr + 2) = 0; | |
2460 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2461 | *(bcc_ptr + 1) = 0; | |
2462 | *(bcc_ptr + 2) = 0; | |
2463 | bcc_ptr += 2; /* null domain */ | |
2464 | } else { /* ASCII */ | |
2465 | strcpy(bcc_ptr, "Linux version "); | |
2466 | bcc_ptr += strlen("Linux version "); | |
2467 | strcpy(bcc_ptr, system_utsname.release); | |
2468 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2469 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2470 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2471 | bcc_ptr++; /* empty domain field */ | |
2472 | *bcc_ptr = 0; | |
2473 | } | |
2474 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2475 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2476 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2477 | smb_buffer->smb_buf_length += count; | |
2478 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2479 | ||
2480 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2481 | &bytes_returned, 1); | |
2482 | ||
2483 | if (smb_buffer_response->Status.CifsError == | |
2484 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2485 | rc = 0; | |
2486 | ||
2487 | if (rc) { | |
2488 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2489 | } else if ((smb_buffer_response->WordCount == 3) | |
2490 | || (smb_buffer_response->WordCount == 4)) { | |
2491 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2492 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2493 | ||
2494 | if (action & GUEST_LOGIN) | |
2495 | cFYI(1, (" Guest login")); | |
2496 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
2497 | ||
2498 | bcc_ptr = pByteArea(smb_buffer_response); | |
2499 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2500 | ||
2501 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2502 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2503 | cFYI(1, | |
2504 | ("Unexpected NTLMSSP message type received %d", | |
2505 | SecurityBlob2->MessageType)); | |
2506 | } else if (ses) { | |
2507 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ | |
2508 | cFYI(1, ("UID = %d ", ses->Suid)); | |
2509 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2510 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2511 | && (blob_len < | |
2512 | pSMBr->resp.ByteCount))) { | |
2513 | ||
2514 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2515 | bcc_ptr += blob_len; | |
2516 | cFYI(1, | |
2517 | ("Security Blob Length %d ", | |
2518 | blob_len)); | |
2519 | } | |
2520 | ||
2521 | cFYI(1, ("NTLMSSP Challenge rcvd ")); | |
2522 | ||
2523 | memcpy(ses->server->cryptKey, | |
2524 | SecurityBlob2->Challenge, | |
2525 | CIFS_CRYPTO_KEY_SIZE); | |
2526 | if(SecurityBlob2->NegotiateFlags & cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) | |
2527 | *pNTLMv2_flag = TRUE; | |
2528 | ||
2529 | if((SecurityBlob2->NegotiateFlags & | |
2530 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
2531 | || (sign_CIFS_PDUs > 1)) | |
2532 | ses->server->secMode |= | |
2533 | SECMODE_SIGN_REQUIRED; | |
2534 | if ((SecurityBlob2->NegotiateFlags & | |
2535 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) | |
2536 | ses->server->secMode |= | |
2537 | SECMODE_SIGN_ENABLED; | |
2538 | ||
2539 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2540 | if ((long) (bcc_ptr) % 2) { | |
2541 | remaining_words = | |
2542 | (BCC(smb_buffer_response) | |
2543 | - 1) / 2; | |
2544 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2545 | } else { | |
2546 | remaining_words = | |
2547 | BCC | |
2548 | (smb_buffer_response) / 2; | |
2549 | } | |
2550 | len = | |
2551 | UniStrnlen((wchar_t *) bcc_ptr, | |
2552 | remaining_words - 1); | |
2553 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2554 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2555 | terminating last Unicode string in response */ | |
2556 | ses->serverOS = | |
433dc24f | 2557 | kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1da177e4 LT |
2558 | cifs_strfromUCS_le(ses->serverOS, |
2559 | (wchar_t *) | |
2560 | bcc_ptr, len, | |
2561 | nls_codepage); | |
2562 | bcc_ptr += 2 * (len + 1); | |
2563 | remaining_words -= len + 1; | |
2564 | ses->serverOS[2 * len] = 0; | |
2565 | ses->serverOS[1 + (2 * len)] = 0; | |
2566 | if (remaining_words > 0) { | |
2567 | len = UniStrnlen((wchar_t *) | |
2568 | bcc_ptr, | |
2569 | remaining_words | |
2570 | - 1); | |
2571 | ses->serverNOS = | |
433dc24f | 2572 | kcalloc(1, 2 * (len + 1), |
1da177e4 LT |
2573 | GFP_KERNEL); |
2574 | cifs_strfromUCS_le(ses-> | |
2575 | serverNOS, | |
2576 | (wchar_t *) | |
2577 | bcc_ptr, | |
2578 | len, | |
2579 | nls_codepage); | |
2580 | bcc_ptr += 2 * (len + 1); | |
2581 | ses->serverNOS[2 * len] = 0; | |
2582 | ses->serverNOS[1 + | |
2583 | (2 * len)] = 0; | |
2584 | remaining_words -= len + 1; | |
2585 | if (remaining_words > 0) { | |
2586 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2587 | /* last string is not always null terminated (for e.g. for Windows XP & 2000) */ | |
2588 | ses->serverDomain = | |
433dc24f | 2589 | kcalloc(1, 2 * |
1da177e4 LT |
2590 | (len + |
2591 | 1), | |
2592 | GFP_KERNEL); | |
2593 | cifs_strfromUCS_le | |
2594 | (ses-> | |
2595 | serverDomain, | |
2596 | (wchar_t *) | |
2597 | bcc_ptr, len, | |
2598 | nls_codepage); | |
2599 | bcc_ptr += | |
2600 | 2 * (len + 1); | |
2601 | ses-> | |
2602 | serverDomain[2 | |
2603 | * len] | |
2604 | = 0; | |
2605 | ses-> | |
2606 | serverDomain[1 | |
2607 | + | |
2608 | (2 | |
2609 | * | |
2610 | len)] | |
2611 | = 0; | |
2612 | } /* else no more room so create dummy domain string */ | |
2613 | else | |
2614 | ses->serverDomain = | |
433dc24f | 2615 | kcalloc(1, 2, |
1da177e4 LT |
2616 | GFP_KERNEL); |
2617 | } else { /* no room so create dummy domain and NOS string */ | |
2618 | ses->serverDomain = | |
433dc24f | 2619 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 | 2620 | ses->serverNOS = |
433dc24f | 2621 | kcalloc(1, 2, GFP_KERNEL); |
1da177e4 LT |
2622 | } |
2623 | } else { /* ASCII */ | |
2624 | len = strnlen(bcc_ptr, 1024); | |
2625 | if (((long) bcc_ptr + len) - (long) | |
2626 | pByteArea(smb_buffer_response) | |
2627 | <= BCC(smb_buffer_response)) { | |
2628 | ses->serverOS = | |
433dc24f | 2629 | kcalloc(1, len + 1, |
1da177e4 LT |
2630 | GFP_KERNEL); |
2631 | strncpy(ses->serverOS, | |
2632 | bcc_ptr, len); | |
2633 | ||
2634 | bcc_ptr += len; | |
2635 | bcc_ptr[0] = 0; /* null terminate string */ | |
2636 | bcc_ptr++; | |
2637 | ||
2638 | len = strnlen(bcc_ptr, 1024); | |
2639 | ses->serverNOS = | |
433dc24f | 2640 | kcalloc(1, len + 1, |
1da177e4 LT |
2641 | GFP_KERNEL); |
2642 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2643 | bcc_ptr += len; | |
2644 | bcc_ptr[0] = 0; | |
2645 | bcc_ptr++; | |
2646 | ||
2647 | len = strnlen(bcc_ptr, 1024); | |
2648 | ses->serverDomain = | |
433dc24f | 2649 | kcalloc(1, len + 1, |
1da177e4 LT |
2650 | GFP_KERNEL); |
2651 | strncpy(ses->serverDomain, bcc_ptr, len); | |
2652 | bcc_ptr += len; | |
2653 | bcc_ptr[0] = 0; | |
2654 | bcc_ptr++; | |
2655 | } else | |
2656 | cFYI(1, | |
2657 | ("Variable field of length %d extends beyond end of smb ", | |
2658 | len)); | |
2659 | } | |
2660 | } else { | |
2661 | cERROR(1, | |
2662 | (" Security Blob Length extends beyond end of SMB")); | |
2663 | } | |
2664 | } else { | |
2665 | cERROR(1, ("No session structure passed in.")); | |
2666 | } | |
2667 | } else { | |
2668 | cERROR(1, | |
2669 | (" Invalid Word count %d: ", | |
2670 | smb_buffer_response->WordCount)); | |
2671 | rc = -EIO; | |
2672 | } | |
2673 | ||
2674 | if (smb_buffer) | |
2675 | cifs_buf_release(smb_buffer); | |
2676 | ||
2677 | return rc; | |
2678 | } | |
2679 | static int | |
2680 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
2681 | char *ntlm_session_key, int ntlmv2_flag, | |
2682 | const struct nls_table *nls_codepage) | |
2683 | { | |
2684 | struct smb_hdr *smb_buffer; | |
2685 | struct smb_hdr *smb_buffer_response; | |
2686 | SESSION_SETUP_ANDX *pSMB; | |
2687 | SESSION_SETUP_ANDX *pSMBr; | |
2688 | char *bcc_ptr; | |
2689 | char *user; | |
2690 | char *domain; | |
2691 | int rc = 0; | |
2692 | int remaining_words = 0; | |
2693 | int bytes_returned = 0; | |
2694 | int len; | |
2695 | int SecurityBlobLength = sizeof (AUTHENTICATE_MESSAGE); | |
2696 | PAUTHENTICATE_MESSAGE SecurityBlob; | |
2697 | __u32 negotiate_flags, capabilities; | |
2698 | __u16 count; | |
2699 | ||
2700 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
2701 | if(ses == NULL) | |
2702 | return -EINVAL; | |
2703 | user = ses->userName; | |
2704 | domain = ses->domainName; | |
2705 | smb_buffer = cifs_buf_get(); | |
2706 | if (smb_buffer == NULL) { | |
2707 | return -ENOMEM; | |
2708 | } | |
2709 | smb_buffer_response = smb_buffer; | |
2710 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2711 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2712 | ||
2713 | /* send SMBsessionSetup here */ | |
2714 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2715 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
2716 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2717 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2718 | pSMB->req.AndXCommand = 0xFF; | |
2719 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2720 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2721 | ||
2722 | pSMB->req.hdr.Uid = ses->Suid; | |
2723 | ||
2724 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
2725 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
2726 | ||
2727 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2728 | CAP_EXTENDED_SECURITY; | |
2729 | if (ses->capabilities & CAP_UNICODE) { | |
2730 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2731 | capabilities |= CAP_UNICODE; | |
2732 | } | |
2733 | if (ses->capabilities & CAP_STATUS32) { | |
2734 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2735 | capabilities |= CAP_STATUS32; | |
2736 | } | |
2737 | if (ses->capabilities & CAP_DFS) { | |
2738 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2739 | capabilities |= CAP_DFS; | |
2740 | } | |
2741 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2742 | ||
2743 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2744 | SecurityBlob = (PAUTHENTICATE_MESSAGE) bcc_ptr; | |
2745 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2746 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2747 | bcc_ptr += SecurityBlobLength; | |
2748 | negotiate_flags = | |
2749 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | | |
2750 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2751 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
2752 | if(sign_CIFS_PDUs) | |
2753 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; | |
2754 | if(ntlmv2_flag) | |
2755 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; | |
2756 | ||
2757 | /* setup pointers to domain name and workstation name */ | |
2758 | ||
2759 | SecurityBlob->WorkstationName.Buffer = 0; | |
2760 | SecurityBlob->WorkstationName.Length = 0; | |
2761 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2762 | SecurityBlob->SessionKey.Length = 0; | |
2763 | SecurityBlob->SessionKey.MaximumLength = 0; | |
2764 | SecurityBlob->SessionKey.Buffer = 0; | |
2765 | ||
2766 | SecurityBlob->LmChallengeResponse.Length = 0; | |
2767 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
2768 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
2769 | ||
2770 | SecurityBlob->NtChallengeResponse.Length = | |
2771 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
2772 | SecurityBlob->NtChallengeResponse.MaximumLength = | |
2773 | cpu_to_le16(CIFS_SESSION_KEY_SIZE); | |
2774 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESSION_KEY_SIZE); | |
2775 | SecurityBlob->NtChallengeResponse.Buffer = | |
2776 | cpu_to_le32(SecurityBlobLength); | |
2777 | SecurityBlobLength += CIFS_SESSION_KEY_SIZE; | |
2778 | bcc_ptr += CIFS_SESSION_KEY_SIZE; | |
2779 | ||
2780 | if (ses->capabilities & CAP_UNICODE) { | |
2781 | if (domain == NULL) { | |
2782 | SecurityBlob->DomainName.Buffer = 0; | |
2783 | SecurityBlob->DomainName.Length = 0; | |
2784 | SecurityBlob->DomainName.MaximumLength = 0; | |
2785 | } else { | |
2786 | __u16 len = | |
2787 | cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64, | |
2788 | nls_codepage); | |
2789 | len *= 2; | |
2790 | SecurityBlob->DomainName.MaximumLength = | |
2791 | cpu_to_le16(len); | |
2792 | SecurityBlob->DomainName.Buffer = | |
2793 | cpu_to_le32(SecurityBlobLength); | |
2794 | bcc_ptr += len; | |
2795 | SecurityBlobLength += len; | |
2796 | SecurityBlob->DomainName.Length = | |
2797 | cpu_to_le16(len); | |
2798 | } | |
2799 | if (user == NULL) { | |
2800 | SecurityBlob->UserName.Buffer = 0; | |
2801 | SecurityBlob->UserName.Length = 0; | |
2802 | SecurityBlob->UserName.MaximumLength = 0; | |
2803 | } else { | |
2804 | __u16 len = | |
2805 | cifs_strtoUCS((wchar_t *) bcc_ptr, user, 64, | |
2806 | nls_codepage); | |
2807 | len *= 2; | |
2808 | SecurityBlob->UserName.MaximumLength = | |
2809 | cpu_to_le16(len); | |
2810 | SecurityBlob->UserName.Buffer = | |
2811 | cpu_to_le32(SecurityBlobLength); | |
2812 | bcc_ptr += len; | |
2813 | SecurityBlobLength += len; | |
2814 | SecurityBlob->UserName.Length = | |
2815 | cpu_to_le16(len); | |
2816 | } | |
2817 | ||
2818 | /* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((wchar_t *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
2819 | SecurityBlob->WorkstationName.Length *= 2; | |
2820 | SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
2821 | SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength); | |
2822 | bcc_ptr += SecurityBlob->WorkstationName.Length; | |
2823 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
2824 | SecurityBlob->WorkstationName.Length = cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
2825 | ||
2826 | if ((long) bcc_ptr % 2) { | |
2827 | *bcc_ptr = 0; | |
2828 | bcc_ptr++; | |
2829 | } | |
2830 | bytes_returned = | |
2831 | cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ", | |
2832 | 32, nls_codepage); | |
2833 | bcc_ptr += 2 * bytes_returned; | |
2834 | bytes_returned = | |
2835 | cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32, | |
2836 | nls_codepage); | |
2837 | bcc_ptr += 2 * bytes_returned; | |
2838 | bcc_ptr += 2; /* null term version string */ | |
2839 | bytes_returned = | |
2840 | cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS, | |
2841 | 64, nls_codepage); | |
2842 | bcc_ptr += 2 * bytes_returned; | |
2843 | *(bcc_ptr + 1) = 0; | |
2844 | *(bcc_ptr + 2) = 0; | |
2845 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2846 | *(bcc_ptr + 1) = 0; | |
2847 | *(bcc_ptr + 2) = 0; | |
2848 | bcc_ptr += 2; /* null domain */ | |
2849 | } else { /* ASCII */ | |
2850 | if (domain == NULL) { | |
2851 | SecurityBlob->DomainName.Buffer = 0; | |
2852 | SecurityBlob->DomainName.Length = 0; | |
2853 | SecurityBlob->DomainName.MaximumLength = 0; | |
2854 | } else { | |
2855 | __u16 len; | |
2856 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; | |
2857 | strncpy(bcc_ptr, domain, 63); | |
2858 | len = strnlen(domain, 64); | |
2859 | SecurityBlob->DomainName.MaximumLength = | |
2860 | cpu_to_le16(len); | |
2861 | SecurityBlob->DomainName.Buffer = | |
2862 | cpu_to_le32(SecurityBlobLength); | |
2863 | bcc_ptr += len; | |
2864 | SecurityBlobLength += len; | |
2865 | SecurityBlob->DomainName.Length = cpu_to_le16(len); | |
2866 | } | |
2867 | if (user == NULL) { | |
2868 | SecurityBlob->UserName.Buffer = 0; | |
2869 | SecurityBlob->UserName.Length = 0; | |
2870 | SecurityBlob->UserName.MaximumLength = 0; | |
2871 | } else { | |
2872 | __u16 len; | |
2873 | strncpy(bcc_ptr, user, 63); | |
2874 | len = strnlen(user, 64); | |
2875 | SecurityBlob->UserName.MaximumLength = | |
2876 | cpu_to_le16(len); | |
2877 | SecurityBlob->UserName.Buffer = | |
2878 | cpu_to_le32(SecurityBlobLength); | |
2879 | bcc_ptr += len; | |
2880 | SecurityBlobLength += len; | |
2881 | SecurityBlob->UserName.Length = cpu_to_le16(len); | |
2882 | } | |
2883 | /* BB fill in our workstation name if known BB */ | |
2884 | ||
2885 | strcpy(bcc_ptr, "Linux version "); | |
2886 | bcc_ptr += strlen("Linux version "); | |
2887 | strcpy(bcc_ptr, system_utsname.release); | |
2888 | bcc_ptr += strlen(system_utsname.release) + 1; | |
2889 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); | |
2890 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2891 | bcc_ptr++; /* null domain */ | |
2892 | *bcc_ptr = 0; | |
2893 | } | |
2894 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2895 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2896 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2897 | smb_buffer->smb_buf_length += count; | |
2898 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2899 | ||
2900 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
2901 | &bytes_returned, 1); | |
2902 | if (rc) { | |
2903 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2904 | } else if ((smb_buffer_response->WordCount == 3) | |
2905 | || (smb_buffer_response->WordCount == 4)) { | |
2906 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2907 | __u16 blob_len = | |
2908 | le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2909 | if (action & GUEST_LOGIN) | |
2910 | cFYI(1, (" Guest login")); /* BB do we want to set anything in SesInfo struct ? */ | |
2911 | /* if(SecurityBlob2->MessageType != NtLm??){ | |
2912 | cFYI("Unexpected message type on auth response is %d ")); | |
2913 | } */ | |
2914 | if (ses) { | |
2915 | cFYI(1, | |
2916 | ("Does UID on challenge %d match auth response UID %d ", | |
2917 | ses->Suid, smb_buffer_response->Uid)); | |
2918 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format */ | |
2919 | bcc_ptr = pByteArea(smb_buffer_response); | |
2920 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
2921 | if ((pSMBr->resp.hdr.WordCount == 3) | |
2922 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2923 | && (blob_len < | |
2924 | pSMBr->resp.ByteCount))) { | |
2925 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2926 | bcc_ptr += | |
2927 | blob_len; | |
2928 | cFYI(1, | |
2929 | ("Security Blob Length %d ", | |
2930 | blob_len)); | |
2931 | } | |
2932 | ||
2933 | cFYI(1, | |
2934 | ("NTLMSSP response to Authenticate ")); | |
2935 | ||
2936 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2937 | if ((long) (bcc_ptr) % 2) { | |
2938 | remaining_words = | |
2939 | (BCC(smb_buffer_response) | |
2940 | - 1) / 2; | |
2941 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
2942 | } else { | |
2943 | remaining_words = BCC(smb_buffer_response) / 2; | |
2944 | } | |
2945 | len = | |
2946 | UniStrnlen((wchar_t *) bcc_ptr,remaining_words - 1); | |
2947 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2948 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2949 | terminating last Unicode string in response */ | |
2950 | ses->serverOS = | |
433dc24f | 2951 | kcalloc(1, 2 * (len + 1), GFP_KERNEL); |
1da177e4 LT |
2952 | cifs_strfromUCS_le(ses->serverOS, |
2953 | (wchar_t *) | |
2954 | bcc_ptr, len, | |
2955 | nls_codepage); | |
2956 | bcc_ptr += 2 * (len + 1); | |
2957 | remaining_words -= len + 1; | |
2958 | ses->serverOS[2 * len] = 0; | |
2959 | ses->serverOS[1 + (2 * len)] = 0; | |
2960 | if (remaining_words > 0) { | |
2961 | len = UniStrnlen((wchar_t *) | |
2962 | bcc_ptr, | |
2963 | remaining_words | |
2964 | - 1); | |
2965 | ses->serverNOS = | |
433dc24f | 2966 | kcalloc(1, 2 * (len + 1), |
1da177e4 LT |
2967 | GFP_KERNEL); |
2968 | cifs_strfromUCS_le(ses-> | |
2969 | serverNOS, | |
2970 | (wchar_t *) | |
2971 | bcc_ptr, | |
2972 | len, | |
2973 | nls_codepage); | |
2974 | bcc_ptr += 2 * (len + 1); | |
2975 | ses->serverNOS[2 * len] = 0; | |
2976 | ses->serverNOS[1+(2*len)] = 0; | |
2977 | remaining_words -= len + 1; | |
2978 | if (remaining_words > 0) { | |
2979 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); | |
2980 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ | |
2981 | ses->serverDomain = | |
433dc24f | 2982 | kcalloc(1, 2 * |
1da177e4 LT |
2983 | (len + |
2984 | 1), | |
2985 | GFP_KERNEL); | |
2986 | cifs_strfromUCS_le | |
2987 | (ses-> | |
2988 | serverDomain, | |
2989 | (wchar_t *) | |
2990 | bcc_ptr, len, | |
2991 | nls_codepage); | |
2992 | bcc_ptr += | |
2993 | 2 * (len + 1); | |
2994 | ses-> | |
2995 | serverDomain[2 | |
2996 | * len] | |
2997 | = 0; | |
2998 | ses-> | |
2999 | serverDomain[1 | |
3000 | + | |
3001 | (2 | |
3002 | * | |
3003 | len)] | |
3004 | = 0; | |
3005 | } /* else no more room so create dummy domain string */ | |
3006 | else | |
433dc24f | 3007 | ses->serverDomain = kcalloc(1, 2,GFP_KERNEL); |
1da177e4 | 3008 | } else { /* no room so create dummy domain and NOS string */ |
433dc24f SF |
3009 | ses->serverDomain = kcalloc(1, 2, GFP_KERNEL); |
3010 | ses->serverNOS = kcalloc(1, 2, GFP_KERNEL); | |
1da177e4 LT |
3011 | } |
3012 | } else { /* ASCII */ | |
3013 | len = strnlen(bcc_ptr, 1024); | |
3014 | if (((long) bcc_ptr + len) - | |
3015 | (long) pByteArea(smb_buffer_response) | |
3016 | <= BCC(smb_buffer_response)) { | |
433dc24f | 3017 | ses->serverOS = kcalloc(1, len + 1,GFP_KERNEL); |
1da177e4 LT |
3018 | strncpy(ses->serverOS,bcc_ptr, len); |
3019 | ||
3020 | bcc_ptr += len; | |
3021 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3022 | bcc_ptr++; | |
3023 | ||
3024 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 3025 | ses->serverNOS = kcalloc(1, len+1,GFP_KERNEL); |
1da177e4 LT |
3026 | strncpy(ses->serverNOS, bcc_ptr, len); |
3027 | bcc_ptr += len; | |
3028 | bcc_ptr[0] = 0; | |
3029 | bcc_ptr++; | |
3030 | ||
3031 | len = strnlen(bcc_ptr, 1024); | |
433dc24f | 3032 | ses->serverDomain = kcalloc(1, len+1,GFP_KERNEL); |
1da177e4 LT |
3033 | strncpy(ses->serverDomain, bcc_ptr, len); |
3034 | bcc_ptr += len; | |
3035 | bcc_ptr[0] = 0; | |
3036 | bcc_ptr++; | |
3037 | } else | |
3038 | cFYI(1, | |
3039 | ("Variable field of length %d extends beyond end of smb ", | |
3040 | len)); | |
3041 | } | |
3042 | } else { | |
3043 | cERROR(1, | |
3044 | (" Security Blob Length extends beyond end of SMB")); | |
3045 | } | |
3046 | } else { | |
3047 | cERROR(1, ("No session structure passed in.")); | |
3048 | } | |
3049 | } else { | |
3050 | cERROR(1, | |
3051 | (" Invalid Word count %d: ", | |
3052 | smb_buffer_response->WordCount)); | |
3053 | rc = -EIO; | |
3054 | } | |
3055 | ||
3056 | if (smb_buffer) | |
3057 | cifs_buf_release(smb_buffer); | |
3058 | ||
3059 | return rc; | |
3060 | } | |
3061 | ||
3062 | int | |
3063 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3064 | const char *tree, struct cifsTconInfo *tcon, | |
3065 | const struct nls_table *nls_codepage) | |
3066 | { | |
3067 | struct smb_hdr *smb_buffer; | |
3068 | struct smb_hdr *smb_buffer_response; | |
3069 | TCONX_REQ *pSMB; | |
3070 | TCONX_RSP *pSMBr; | |
3071 | unsigned char *bcc_ptr; | |
3072 | int rc = 0; | |
3073 | int length; | |
3074 | __u16 count; | |
3075 | ||
3076 | if (ses == NULL) | |
3077 | return -EIO; | |
3078 | ||
3079 | smb_buffer = cifs_buf_get(); | |
3080 | if (smb_buffer == NULL) { | |
3081 | return -ENOMEM; | |
3082 | } | |
3083 | smb_buffer_response = smb_buffer; | |
3084 | ||
3085 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3086 | NULL /*no tid */ , 4 /*wct */ ); | |
3087 | smb_buffer->Uid = ses->Suid; | |
3088 | pSMB = (TCONX_REQ *) smb_buffer; | |
3089 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3090 | ||
3091 | pSMB->AndXCommand = 0xFF; | |
3092 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
3093 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ | |
3094 | bcc_ptr = &pSMB->Password[0]; | |
3095 | bcc_ptr++; /* skip password */ | |
3096 | ||
3097 | if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
3098 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; | |
3099 | ||
3100 | if (ses->capabilities & CAP_STATUS32) { | |
3101 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3102 | } | |
3103 | if (ses->capabilities & CAP_DFS) { | |
3104 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3105 | } | |
3106 | if (ses->capabilities & CAP_UNICODE) { | |
3107 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3108 | length = | |
3109 | cifs_strtoUCS((wchar_t *) bcc_ptr, tree, 100, nls_codepage); | |
3110 | bcc_ptr += 2 * length; /* convert num of 16 bit words to bytes */ | |
3111 | bcc_ptr += 2; /* skip trailing null */ | |
3112 | } else { /* ASCII */ | |
3113 | ||
3114 | strcpy(bcc_ptr, tree); | |
3115 | bcc_ptr += strlen(tree) + 1; | |
3116 | } | |
3117 | strcpy(bcc_ptr, "?????"); | |
3118 | bcc_ptr += strlen("?????"); | |
3119 | bcc_ptr += 1; | |
3120 | count = bcc_ptr - &pSMB->Password[0]; | |
3121 | pSMB->hdr.smb_buf_length += count; | |
3122 | pSMB->ByteCount = cpu_to_le16(count); | |
3123 | ||
3124 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, 0); | |
3125 | ||
3126 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3127 | /* above now done in SendReceive */ | |
3128 | if ((rc == 0) && (tcon != NULL)) { | |
3129 | tcon->tidStatus = CifsGood; | |
3130 | tcon->tid = smb_buffer_response->Tid; | |
3131 | bcc_ptr = pByteArea(smb_buffer_response); | |
3132 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
3133 | /* skip service field (NB: this field is always ASCII) */ | |
3134 | bcc_ptr += length + 1; | |
3135 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); | |
3136 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3137 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3138 | if ((bcc_ptr + (2 * length)) - | |
3139 | pByteArea(smb_buffer_response) <= | |
3140 | BCC(smb_buffer_response)) { | |
3141 | if(tcon->nativeFileSystem) | |
3142 | kfree(tcon->nativeFileSystem); | |
3143 | tcon->nativeFileSystem = | |
433dc24f | 3144 | kcalloc(1, length + 2, GFP_KERNEL); |
1da177e4 LT |
3145 | cifs_strfromUCS_le(tcon->nativeFileSystem, |
3146 | (wchar_t *) bcc_ptr, | |
3147 | length, nls_codepage); | |
3148 | bcc_ptr += 2 * length; | |
3149 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3150 | bcc_ptr[1] = 0; | |
3151 | bcc_ptr += 2; | |
3152 | } | |
3153 | /* else do not bother copying these informational fields */ | |
3154 | } else { | |
3155 | length = strnlen(bcc_ptr, 1024); | |
3156 | if ((bcc_ptr + length) - | |
3157 | pByteArea(smb_buffer_response) <= | |
3158 | BCC(smb_buffer_response)) { | |
3159 | if(tcon->nativeFileSystem) | |
3160 | kfree(tcon->nativeFileSystem); | |
3161 | tcon->nativeFileSystem = | |
433dc24f | 3162 | kcalloc(1, length + 1, GFP_KERNEL); |
1da177e4 LT |
3163 | strncpy(tcon->nativeFileSystem, bcc_ptr, |
3164 | length); | |
3165 | } | |
3166 | /* else do not bother copying these informational fields */ | |
3167 | } | |
3168 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); | |
3169 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); | |
3170 | } else if ((rc == 0) && tcon == NULL) { | |
3171 | /* all we need to save for IPC$ connection */ | |
3172 | ses->ipc_tid = smb_buffer_response->Tid; | |
3173 | } | |
3174 | ||
3175 | if (smb_buffer) | |
3176 | cifs_buf_release(smb_buffer); | |
3177 | return rc; | |
3178 | } | |
3179 | ||
3180 | int | |
3181 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3182 | { | |
3183 | int rc = 0; | |
3184 | int xid; | |
3185 | struct cifsSesInfo *ses = NULL; | |
3186 | struct task_struct *cifsd_task; | |
3187 | ||
3188 | xid = GetXid(); | |
3189 | ||
3190 | if (cifs_sb->tcon) { | |
3191 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3192 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3193 | if (rc == -EBUSY) { | |
3194 | FreeXid(xid); | |
3195 | return 0; | |
3196 | } | |
3197 | tconInfoFree(cifs_sb->tcon); | |
3198 | if ((ses) && (ses->server)) { | |
3199 | /* save off task so we do not refer to ses later */ | |
3200 | cifsd_task = ses->server->tsk; | |
3201 | cFYI(1, ("About to do SMBLogoff ")); | |
3202 | rc = CIFSSMBLogoff(xid, ses); | |
3203 | if (rc == -EBUSY) { | |
3204 | FreeXid(xid); | |
3205 | return 0; | |
3206 | } else if (rc == -ESHUTDOWN) { | |
3207 | cFYI(1,("Waking up socket by sending it signal")); | |
3208 | if(cifsd_task) | |
3209 | send_sig(SIGKILL,cifsd_task,1); | |
3210 | rc = 0; | |
3211 | } /* else - we have an smb session | |
3212 | left on this socket do not kill cifsd */ | |
3213 | } else | |
3214 | cFYI(1, ("No session or bad tcon")); | |
3215 | } | |
3216 | ||
3217 | cifs_sb->tcon = NULL; | |
3218 | if (ses) { | |
3219 | set_current_state(TASK_INTERRUPTIBLE); | |
3220 | schedule_timeout(HZ / 2); | |
3221 | } | |
3222 | if (ses) | |
3223 | sesInfoFree(ses); | |
3224 | ||
3225 | FreeXid(xid); | |
3226 | return rc; /* BB check if we should always return zero here */ | |
3227 | } | |
3228 | ||
3229 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
3230 | struct nls_table * nls_info) | |
3231 | { | |
3232 | int rc = 0; | |
3233 | char ntlm_session_key[CIFS_SESSION_KEY_SIZE]; | |
3234 | int ntlmv2_flag = FALSE; | |
ad009ac9 | 3235 | int first_time = 0; |
1da177e4 LT |
3236 | |
3237 | /* what if server changes its buffer size after dropping the session? */ | |
3238 | if(pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { | |
3239 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3240 | if(rc == -EAGAIN) /* retry only once on 1st time connection */ { | |
3241 | rc = CIFSSMBNegotiate(xid, pSesInfo); | |
3242 | if(rc == -EAGAIN) | |
3243 | rc = -EHOSTDOWN; | |
3244 | } | |
3245 | if(rc == 0) { | |
3246 | spin_lock(&GlobalMid_Lock); | |
3247 | if(pSesInfo->server->tcpStatus != CifsExiting) | |
3248 | pSesInfo->server->tcpStatus = CifsGood; | |
3249 | else | |
3250 | rc = -EHOSTDOWN; | |
3251 | spin_unlock(&GlobalMid_Lock); | |
3252 | ||
3253 | } | |
ad009ac9 | 3254 | first_time = 1; |
1da177e4 LT |
3255 | } |
3256 | if (!rc) { | |
3257 | pSesInfo->capabilities = pSesInfo->server->capabilities; | |
3258 | if(linuxExtEnabled == 0) | |
3259 | pSesInfo->capabilities &= (~CAP_UNIX); | |
ad009ac9 | 3260 | /* pSesInfo->sequence_number = 0;*/ |
1da177e4 LT |
3261 | cFYI(1,("Security Mode: 0x%x Capabilities: 0x%x Time Zone: %d", |
3262 | pSesInfo->server->secMode, | |
3263 | pSesInfo->server->capabilities, | |
3264 | pSesInfo->server->timeZone)); | |
3265 | if (extended_security | |
3266 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3267 | && (pSesInfo->server->secType == NTLMSSP)) { | |
3268 | cFYI(1, ("New style sesssetup ")); | |
3269 | rc = CIFSSpnegoSessSetup(xid, pSesInfo, | |
3270 | NULL /* security blob */, | |
3271 | 0 /* blob length */, | |
3272 | nls_info); | |
3273 | } else if (extended_security | |
3274 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3275 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
3276 | cFYI(1, ("NTLMSSP sesssetup ")); | |
3277 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, | |
3278 | pSesInfo, | |
3279 | &ntlmv2_flag, | |
3280 | nls_info); | |
3281 | if (!rc) { | |
3282 | if(ntlmv2_flag) { | |
3283 | char * v2_response; | |
3284 | cFYI(1,("Can use more secure NTLM version 2 password hash")); | |
3285 | if(CalcNTLMv2_partial_mac_key(pSesInfo, | |
3286 | nls_info)) { | |
3287 | rc = -ENOMEM; | |
3288 | goto ss_err_exit; | |
3289 | } else | |
3290 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
3291 | if(v2_response) { | |
3292 | CalcNTLMv2_response(pSesInfo,v2_response); | |
ad009ac9 SF |
3293 | /* if(first_time) |
3294 | cifs_calculate_ntlmv2_mac_key( | |
3295 | pSesInfo->server->mac_signing_key, | |
3296 | response, ntlm_session_key, */ | |
1da177e4 LT |
3297 | kfree(v2_response); |
3298 | /* BB Put dummy sig in SessSetup PDU? */ | |
3299 | } else { | |
3300 | rc = -ENOMEM; | |
3301 | goto ss_err_exit; | |
3302 | } | |
3303 | ||
3304 | } else { | |
3305 | SMBNTencrypt(pSesInfo->password, | |
3306 | pSesInfo->server->cryptKey, | |
3307 | ntlm_session_key); | |
3308 | ||
ad009ac9 SF |
3309 | if(first_time) |
3310 | cifs_calculate_mac_key( | |
3311 | pSesInfo->server->mac_signing_key, | |
3312 | ntlm_session_key, | |
3313 | pSesInfo->password); | |
1da177e4 LT |
3314 | } |
3315 | /* for better security the weaker lanman hash not sent | |
3316 | in AuthSessSetup so we no longer calculate it */ | |
3317 | ||
3318 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3319 | pSesInfo, | |
3320 | ntlm_session_key, | |
3321 | ntlmv2_flag, | |
3322 | nls_info); | |
3323 | } | |
3324 | } else { /* old style NTLM 0.12 session setup */ | |
3325 | SMBNTencrypt(pSesInfo->password, | |
3326 | pSesInfo->server->cryptKey, | |
3327 | ntlm_session_key); | |
3328 | ||
ad009ac9 SF |
3329 | if(first_time) |
3330 | cifs_calculate_mac_key( | |
3331 | pSesInfo->server->mac_signing_key, | |
3332 | ntlm_session_key, pSesInfo->password); | |
3333 | ||
1da177e4 LT |
3334 | rc = CIFSSessSetup(xid, pSesInfo, |
3335 | ntlm_session_key, nls_info); | |
3336 | } | |
3337 | if (rc) { | |
3338 | cERROR(1,("Send error in SessSetup = %d",rc)); | |
3339 | } else { | |
3340 | cFYI(1,("CIFS Session Established successfully")); | |
3341 | pSesInfo->status = CifsGood; | |
3342 | } | |
3343 | } | |
3344 | ss_err_exit: | |
3345 | return rc; | |
3346 | } | |
3347 |