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