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