s3:smbd: correctly verify stream names to pass RAW-STREAMS
[kai/samba.git] / source3 / smbd / reply.c
1 /*
2    Unix SMB/CIFS implementation.
3    Main SMB reply routines
4    Copyright (C) Andrew Tridgell 1992-1998
5    Copyright (C) Andrew Bartlett      2001
6    Copyright (C) Jeremy Allison 1992-2007.
7    Copyright (C) Volker Lendecke 2007
8
9    This program is free software; you can redistribute it and/or modify
10    it under the terms of the GNU General Public License as published by
11    the Free Software Foundation; either version 3 of the License, or
12    (at your option) any later version.
13
14    This program is distributed in the hope that it will be useful,
15    but WITHOUT ANY WARRANTY; without even the implied warranty of
16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17    GNU General Public License for more details.
18
19    You should have received a copy of the GNU General Public License
20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
21 */
22 /*
23    This file handles most of the reply_ calls that the server
24    makes to handle specific protocols
25 */
26
27 #include "includes.h"
28
29 /* look in server.c for some explanation of these variables */
30 extern enum protocol_types Protocol;
31 extern int max_recv;
32 extern uint32 global_client_caps;
33
34 extern bool global_encrypted_passwords_negotiated;
35
36 /****************************************************************************
37  Ensure we check the path in *exactly* the same way as W2K for a findfirst/findnext
38  path or anything including wildcards.
39  We're assuming here that '/' is not the second byte in any multibyte char
40  set (a safe assumption). '\\' *may* be the second byte in a multibyte char
41  set.
42 ****************************************************************************/
43
44 /* Custom version for processing POSIX paths. */
45 #define IS_PATH_SEP(c,posix_only) ((c) == '/' || (!(posix_only) && (c) == '\\'))
46
47 static NTSTATUS check_path_syntax_internal(char *path,
48                                            bool posix_path,
49                                            bool *p_last_component_contains_wcard)
50 {
51         char *d = path;
52         const char *s = path;
53         NTSTATUS ret = NT_STATUS_OK;
54         bool start_of_name_component = True;
55         bool stream_started = false;
56
57         *p_last_component_contains_wcard = False;
58
59         while (*s) {
60                 if (stream_started) {
61                         switch (*s) {
62                         case '/':
63                         case '\\':
64                                 return NT_STATUS_OBJECT_NAME_INVALID;
65                         case ':':
66                                 if (s[1] == '\0') {
67                                         return NT_STATUS_OBJECT_NAME_INVALID;
68                                 }
69                                 if (strchr_m(&s[1], ':')) {
70                                         return NT_STATUS_OBJECT_NAME_INVALID;
71                                 }
72                                 if (StrCaseCmp(s, ":$DATA") != 0) {
73                                         return NT_STATUS_INVALID_PARAMETER;
74                                 }
75                                 break;
76                         }
77                 }
78
79                 if (!stream_started && *s == ':') {
80                         if (*p_last_component_contains_wcard) {
81                                 return NT_STATUS_OBJECT_NAME_INVALID;
82                         }
83                         /* stream names allow more characters than file names */
84                         stream_started = true;
85                         start_of_name_component = false;
86                         posix_path = true;
87
88                         if (s[1] == '\0') {
89                                 return NT_STATUS_OBJECT_NAME_INVALID;
90                         }
91                 }
92
93                 if (!stream_started && IS_PATH_SEP(*s,posix_path)) {
94                         /*
95                          * Safe to assume is not the second part of a mb char
96                          * as this is handled below.
97                          */
98                         /* Eat multiple '/' or '\\' */
99                         while (IS_PATH_SEP(*s,posix_path)) {
100                                 s++;
101                         }
102                         if ((d != path) && (*s != '\0')) {
103                                 /* We only care about non-leading or trailing '/' or '\\' */
104                                 *d++ = '/';
105                         }
106
107                         start_of_name_component = True;
108                         /* New component. */
109                         *p_last_component_contains_wcard = False;
110                         continue;
111                 }
112
113                 if (start_of_name_component) {
114                         if ((s[0] == '.') && (s[1] == '.') && (IS_PATH_SEP(s[2],posix_path) || s[2] == '\0')) {
115                                 /* Uh oh - "/../" or "\\..\\"  or "/..\0" or "\\..\0" ! */
116
117                                 /*
118                                  * No mb char starts with '.' so we're safe checking the directory separator here.
119                                  */
120
121                                 /* If  we just added a '/' - delete it */
122                                 if ((d > path) && (*(d-1) == '/')) {
123                                         *(d-1) = '\0';
124                                         d--;
125                                 }
126
127                                 /* Are we at the start ? Can't go back further if so. */
128                                 if (d <= path) {
129                                         ret = NT_STATUS_OBJECT_PATH_SYNTAX_BAD;
130                                         break;
131                                 }
132                                 /* Go back one level... */
133                                 /* We know this is safe as '/' cannot be part of a mb sequence. */
134                                 /* NOTE - if this assumption is invalid we are not in good shape... */
135                                 /* Decrement d first as d points to the *next* char to write into. */
136                                 for (d--; d > path; d--) {
137                                         if (*d == '/')
138                                                 break;
139                                 }
140                                 s += 2; /* Else go past the .. */
141                                 /* We're still at the start of a name component, just the previous one. */
142                                 continue;
143
144                         } else if ((s[0] == '.') && ((s[1] == '\0') || IS_PATH_SEP(s[1],posix_path))) {
145                                 if (posix_path) {
146                                         /* Eat the '.' */
147                                         s++;
148                                         continue;
149                                 }
150                         }
151
152                 }
153
154                 if (!(*s & 0x80)) {
155                         if (!posix_path) {
156                                 if (*s <= 0x1f || *s == '|') {
157                                         return NT_STATUS_OBJECT_NAME_INVALID;
158                                 }
159                                 switch (*s) {
160                                         case '*':
161                                         case '?':
162                                         case '<':
163                                         case '>':
164                                         case '"':
165                                                 *p_last_component_contains_wcard = True;
166                                                 break;
167                                         default:
168                                                 break;
169                                 }
170                         }
171                         *d++ = *s++;
172                 } else {
173                         size_t siz;
174                         /* Get the size of the next MB character. */
175                         next_codepoint(s,&siz);
176                         switch(siz) {
177                                 case 5:
178                                         *d++ = *s++;
179                                         /*fall through*/
180                                 case 4:
181                                         *d++ = *s++;
182                                         /*fall through*/
183                                 case 3:
184                                         *d++ = *s++;
185                                         /*fall through*/
186                                 case 2:
187                                         *d++ = *s++;
188                                         /*fall through*/
189                                 case 1:
190                                         *d++ = *s++;
191                                         break;
192                                 default:
193                                         DEBUG(0,("check_path_syntax_internal: character length assumptions invalid !\n"));
194                                         *d = '\0';
195                                         return NT_STATUS_INVALID_PARAMETER;
196                         }
197                 }
198                 start_of_name_component = False;
199         }
200
201         *d = '\0';
202
203         return ret;
204 }
205
206 /****************************************************************************
207  Ensure we check the path in *exactly* the same way as W2K for regular pathnames.
208  No wildcards allowed.
209 ****************************************************************************/
210
211 NTSTATUS check_path_syntax(char *path)
212 {
213         bool ignore;
214         return check_path_syntax_internal(path, False, &ignore);
215 }
216
217 /****************************************************************************
218  Ensure we check the path in *exactly* the same way as W2K for regular pathnames.
219  Wildcards allowed - p_contains_wcard returns true if the last component contained
220  a wildcard.
221 ****************************************************************************/
222
223 NTSTATUS check_path_syntax_wcard(char *path, bool *p_contains_wcard)
224 {
225         return check_path_syntax_internal(path, False, p_contains_wcard);
226 }
227
228 /****************************************************************************
229  Check the path for a POSIX client.
230  We're assuming here that '/' is not the second byte in any multibyte char
231  set (a safe assumption).
232 ****************************************************************************/
233
234 NTSTATUS check_path_syntax_posix(char *path)
235 {
236         bool ignore;
237         return check_path_syntax_internal(path, True, &ignore);
238 }
239
240 /****************************************************************************
241  Pull a string and check the path allowing a wilcard - provide for error return.
242 ****************************************************************************/
243
244 size_t srvstr_get_path_wcard(TALLOC_CTX *ctx,
245                         const char *base_ptr,
246                         uint16 smb_flags2,
247                         char **pp_dest,
248                         const char *src,
249                         size_t src_len,
250                         int flags,
251                         NTSTATUS *err,
252                         bool *contains_wcard)
253 {
254         size_t ret;
255
256         *pp_dest = NULL;
257
258         ret = srvstr_pull_talloc(ctx, base_ptr, smb_flags2, pp_dest, src,
259                                  src_len, flags);
260
261         if (!*pp_dest) {
262                 *err = NT_STATUS_INVALID_PARAMETER;
263                 return ret;
264         }
265
266         *contains_wcard = False;
267
268         if (smb_flags2 & FLAGS2_DFS_PATHNAMES) {
269                 /*
270                  * For a DFS path the function parse_dfs_path()
271                  * will do the path processing, just make a copy.
272                  */
273                 *err = NT_STATUS_OK;
274                 return ret;
275         }
276
277         if (lp_posix_pathnames()) {
278                 *err = check_path_syntax_posix(*pp_dest);
279         } else {
280                 *err = check_path_syntax_wcard(*pp_dest, contains_wcard);
281         }
282
283         return ret;
284 }
285
286 /****************************************************************************
287  Pull a string and check the path - provide for error return.
288 ****************************************************************************/
289
290 size_t srvstr_get_path(TALLOC_CTX *ctx,
291                         const char *base_ptr,
292                         uint16 smb_flags2,
293                         char **pp_dest,
294                         const char *src,
295                         size_t src_len,
296                         int flags,
297                         NTSTATUS *err)
298 {
299         bool ignore;
300         return srvstr_get_path_wcard(ctx, base_ptr, smb_flags2, pp_dest, src,
301                                      src_len, flags, err, &ignore);
302 }
303
304 size_t srvstr_get_path_req_wcard(TALLOC_CTX *mem_ctx, struct smb_request *req,
305                                  char **pp_dest, const char *src, int flags,
306                                  NTSTATUS *err, bool *contains_wcard)
307 {
308         return srvstr_get_path_wcard(mem_ctx, (char *)req->inbuf, req->flags2,
309                                      pp_dest, src, smbreq_bufrem(req, src),
310                                      flags, err, contains_wcard);
311 }
312
313 size_t srvstr_get_path_req(TALLOC_CTX *mem_ctx, struct smb_request *req,
314                            char **pp_dest, const char *src, int flags,
315                            NTSTATUS *err)
316 {
317         bool ignore;
318         return srvstr_get_path_req_wcard(mem_ctx, req, pp_dest, src,
319                                          flags, err, &ignore);
320 }
321
322 /****************************************************************************
323  Check if we have a correct fsp pointing to a file. Basic check for open fsp.
324 ****************************************************************************/
325
326 bool check_fsp_open(connection_struct *conn, struct smb_request *req,
327                     files_struct *fsp)
328 {
329         if (!(fsp) || !(conn)) {
330                 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
331                 return False;
332         }
333         if (((conn) != (fsp)->conn) || req->vuid != (fsp)->vuid) {
334                 reply_nterror(req, NT_STATUS_INVALID_HANDLE);
335                 return False;
336         }
337         return True;
338 }
339
340 /****************************************************************************
341  Check if we have a correct fsp pointing to a file.
342 ****************************************************************************/
343
344 bool check_fsp(connection_struct *conn, struct smb_request *req,
345                files_struct *fsp)
346 {
347         if (!check_fsp_open(conn, req, fsp)) {
348                 return False;
349         }
350         if ((fsp)->is_directory) {
351                 reply_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
352                 return False;
353         }
354         if ((fsp)->fh->fd == -1) {
355                 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
356                 return False;
357         }
358         (fsp)->num_smb_operations++;
359         return True;
360 }
361
362 /****************************************************************************
363  Check if we have a correct fsp pointing to a quota fake file. Replacement for
364  the CHECK_NTQUOTA_HANDLE_OK macro.
365 ****************************************************************************/
366
367 bool check_fsp_ntquota_handle(connection_struct *conn, struct smb_request *req,
368                               files_struct *fsp)
369 {
370         if (!check_fsp_open(conn, req, fsp)) {
371                 return false;
372         }
373
374         if (fsp->is_directory) {
375                 return false;
376         }
377
378         if (fsp->fake_file_handle == NULL) {
379                 return false;
380         }
381
382         if (fsp->fake_file_handle->type != FAKE_FILE_TYPE_QUOTA) {
383                 return false;
384         }
385
386         if (fsp->fake_file_handle->private_data == NULL) {
387                 return false;
388         }
389
390         return true;
391 }
392
393 /****************************************************************************
394  Check if we have a correct fsp. Replacement for the FSP_BELONGS_CONN macro
395 ****************************************************************************/
396
397 bool fsp_belongs_conn(connection_struct *conn, struct smb_request *req,
398                       files_struct *fsp)
399 {
400         if ((fsp) && (conn) && ((conn)==(fsp)->conn)
401             && (req->vuid == (fsp)->vuid)) {
402                 return True;
403         }
404
405         reply_nterror(req, NT_STATUS_INVALID_HANDLE);
406         return False;
407 }
408
409 /****************************************************************************
410  Reply to a (netbios-level) special message.
411 ****************************************************************************/
412
413 void reply_special(char *inbuf)
414 {
415         int msg_type = CVAL(inbuf,0);
416         int msg_flags = CVAL(inbuf,1);
417         fstring name1,name2;
418         char name_type = 0;
419
420         /*
421          * We only really use 4 bytes of the outbuf, but for the smb_setlen
422          * calculation & friends (srv_send_smb uses that) we need the full smb
423          * header.
424          */
425         char outbuf[smb_size];
426
427         static bool already_got_session = False;
428
429         *name1 = *name2 = 0;
430
431         memset(outbuf, '\0', sizeof(outbuf));
432
433         smb_setlen(outbuf,0);
434
435         switch (msg_type) {
436         case 0x81: /* session request */
437
438                 if (already_got_session) {
439                         exit_server_cleanly("multiple session request not permitted");
440                 }
441
442                 SCVAL(outbuf,0,0x82);
443                 SCVAL(outbuf,3,0);
444                 if (name_len(inbuf+4) > 50 || 
445                     name_len(inbuf+4 + name_len(inbuf + 4)) > 50) {
446                         DEBUG(0,("Invalid name length in session request\n"));
447                         return;
448                 }
449                 name_extract(inbuf,4,name1);
450                 name_type = name_extract(inbuf,4 + name_len(inbuf + 4),name2);
451                 DEBUG(2,("netbios connect: name1=%s name2=%s\n",
452                          name1,name2));      
453
454                 set_local_machine_name(name1, True);
455                 set_remote_machine_name(name2, True);
456
457                 DEBUG(2,("netbios connect: local=%s remote=%s, name type = %x\n",
458                          get_local_machine_name(), get_remote_machine_name(),
459                          name_type));
460
461                 if (name_type == 'R') {
462                         /* We are being asked for a pathworks session --- 
463                            no thanks! */
464                         SCVAL(outbuf, 0,0x83);
465                         break;
466                 }
467
468                 /* only add the client's machine name to the list
469                    of possibly valid usernames if we are operating
470                    in share mode security */
471                 if (lp_security() == SEC_SHARE) {
472                         add_session_user(get_remote_machine_name());
473                 }
474
475                 reload_services(True);
476                 reopen_logs();
477
478                 already_got_session = True;
479                 break;
480
481         case 0x89: /* session keepalive request 
482                       (some old clients produce this?) */
483                 SCVAL(outbuf,0,SMBkeepalive);
484                 SCVAL(outbuf,3,0);
485                 break;
486
487         case 0x82: /* positive session response */
488         case 0x83: /* negative session response */
489         case 0x84: /* retarget session response */
490                 DEBUG(0,("Unexpected session response\n"));
491                 break;
492
493         case SMBkeepalive: /* session keepalive */
494         default:
495                 return;
496         }
497
498         DEBUG(5,("init msg_type=0x%x msg_flags=0x%x\n",
499                     msg_type, msg_flags));
500
501         srv_send_smb(smbd_server_fd(), outbuf, false);
502         return;
503 }
504
505 /****************************************************************************
506  Reply to a tcon.
507  conn POINTER CAN BE NULL HERE !
508 ****************************************************************************/
509
510 void reply_tcon(struct smb_request *req)
511 {
512         connection_struct *conn = req->conn;
513         const char *service;
514         char *service_buf = NULL;
515         char *password = NULL;
516         char *dev = NULL;
517         int pwlen=0;
518         NTSTATUS nt_status;
519         const char *p;
520         DATA_BLOB password_blob;
521         TALLOC_CTX *ctx = talloc_tos();
522
523         START_PROFILE(SMBtcon);
524
525         if (req->buflen < 4) {
526                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
527                 END_PROFILE(SMBtcon);
528                 return;
529         }
530
531         p = (const char *)req->buf + 1;
532         p += srvstr_pull_req_talloc(ctx, req, &service_buf, p, STR_TERMINATE);
533         p += 1;
534         pwlen = srvstr_pull_req_talloc(ctx, req, &password, p, STR_TERMINATE);
535         p += pwlen+1;
536         p += srvstr_pull_req_talloc(ctx, req, &dev, p, STR_TERMINATE);
537         p += 1;
538
539         if (service_buf == NULL || password == NULL || dev == NULL) {
540                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
541                 END_PROFILE(SMBtcon);
542                 return;
543         }
544         p = strrchr_m(service_buf,'\\');
545         if (p) {
546                 service = p+1;
547         } else {
548                 service = service_buf;
549         }
550
551         password_blob = data_blob(password, pwlen+1);
552
553         conn = make_connection(service,password_blob,dev,req->vuid,&nt_status);
554         req->conn = conn;
555
556         data_blob_clear_free(&password_blob);
557
558         if (!conn) {
559                 reply_nterror(req, nt_status);
560                 END_PROFILE(SMBtcon);
561                 return;
562         }
563
564         reply_outbuf(req, 2, 0);
565         SSVAL(req->outbuf,smb_vwv0,max_recv);
566         SSVAL(req->outbuf,smb_vwv1,conn->cnum);
567         SSVAL(req->outbuf,smb_tid,conn->cnum);
568
569         DEBUG(3,("tcon service=%s cnum=%d\n",
570                  service, conn->cnum));
571
572         END_PROFILE(SMBtcon);
573         return;
574 }
575
576 /****************************************************************************
577  Reply to a tcon and X.
578  conn POINTER CAN BE NULL HERE !
579 ****************************************************************************/
580
581 void reply_tcon_and_X(struct smb_request *req)
582 {
583         connection_struct *conn = req->conn;
584         const char *service = NULL;
585         DATA_BLOB password;
586         TALLOC_CTX *ctx = talloc_tos();
587         /* what the cleint thinks the device is */
588         char *client_devicetype = NULL;
589         /* what the server tells the client the share represents */
590         const char *server_devicetype;
591         NTSTATUS nt_status;
592         int passlen;
593         char *path = NULL;
594         const char *p, *q;
595         uint16 tcon_flags;
596
597         START_PROFILE(SMBtconX);
598
599         if (req->wct < 4) {
600                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
601                 END_PROFILE(SMBtconX);
602                 return;
603         }
604
605         passlen = SVAL(req->vwv+3, 0);
606         tcon_flags = SVAL(req->vwv+2, 0);
607
608         /* we might have to close an old one */
609         if ((tcon_flags & 0x1) && conn) {
610                 close_cnum(conn,req->vuid);
611                 req->conn = NULL;
612                 conn = NULL;
613         }
614
615         if ((passlen > MAX_PASS_LEN) || (passlen >= req->buflen)) {
616                 reply_doserror(req, ERRDOS, ERRbuftoosmall);
617                 END_PROFILE(SMBtconX);
618                 return;
619         }
620
621         if (global_encrypted_passwords_negotiated) {
622                 password = data_blob_talloc(talloc_tos(), req->buf, passlen);
623                 if (lp_security() == SEC_SHARE) {
624                         /*
625                          * Security = share always has a pad byte
626                          * after the password.
627                          */
628                         p = (const char *)req->buf + passlen + 1;
629                 } else {
630                         p = (const char *)req->buf + passlen;
631                 }
632         } else {
633                 password = data_blob_talloc(talloc_tos(), req->buf, passlen+1);
634                 /* Ensure correct termination */
635                 password.data[passlen]=0;
636                 p = (const char *)req->buf + passlen + 1;
637         }
638
639         p += srvstr_pull_req_talloc(ctx, req, &path, p, STR_TERMINATE);
640
641         if (path == NULL) {
642                 data_blob_clear_free(&password);
643                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
644                 END_PROFILE(SMBtconX);
645                 return;
646         }
647
648         /*
649          * the service name can be either: \\server\share
650          * or share directly like on the DELL PowerVault 705
651          */
652         if (*path=='\\') {
653                 q = strchr_m(path+2,'\\');
654                 if (!q) {
655                         data_blob_clear_free(&password);
656                         reply_doserror(req, ERRDOS, ERRnosuchshare);
657                         END_PROFILE(SMBtconX);
658                         return;
659                 }
660                 service = q+1;
661         } else {
662                 service = path;
663         }
664
665         p += srvstr_pull_talloc(ctx, req->inbuf, req->flags2,
666                                 &client_devicetype, p,
667                                 MIN(6, smbreq_bufrem(req, p)), STR_ASCII);
668
669         if (client_devicetype == NULL) {
670                 data_blob_clear_free(&password);
671                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
672                 END_PROFILE(SMBtconX);
673                 return;
674         }
675
676         DEBUG(4,("Client requested device type [%s] for share [%s]\n", client_devicetype, service));
677
678         conn = make_connection(service, password, client_devicetype,
679                                req->vuid, &nt_status);
680         req->conn =conn;
681
682         data_blob_clear_free(&password);
683
684         if (!conn) {
685                 reply_nterror(req, nt_status);
686                 END_PROFILE(SMBtconX);
687                 return;
688         }
689
690         if ( IS_IPC(conn) )
691                 server_devicetype = "IPC";
692         else if ( IS_PRINT(conn) )
693                 server_devicetype = "LPT1:";
694         else
695                 server_devicetype = "A:";
696
697         if (Protocol < PROTOCOL_NT1) {
698                 reply_outbuf(req, 2, 0);
699                 if (message_push_string(&req->outbuf, server_devicetype,
700                                         STR_TERMINATE|STR_ASCII) == -1) {
701                         reply_nterror(req, NT_STATUS_NO_MEMORY);
702                         END_PROFILE(SMBtconX);
703                         return;
704                 }
705         } else {
706                 /* NT sets the fstype of IPC$ to the null string */
707                 const char *fstype = IS_IPC(conn) ? "" : lp_fstype(SNUM(conn));
708
709                 if (tcon_flags & TCONX_FLAG_EXTENDED_RESPONSE) {
710                         /* Return permissions. */
711                         uint32 perm1 = 0;
712                         uint32 perm2 = 0;
713
714                         reply_outbuf(req, 7, 0);
715
716                         if (IS_IPC(conn)) {
717                                 perm1 = FILE_ALL_ACCESS;
718                                 perm2 = FILE_ALL_ACCESS;
719                         } else {
720                                 perm1 = CAN_WRITE(conn) ?
721                                                 SHARE_ALL_ACCESS :
722                                                 SHARE_READ_ONLY;
723                         }
724
725                         SIVAL(req->outbuf, smb_vwv3, perm1);
726                         SIVAL(req->outbuf, smb_vwv5, perm2);
727                 } else {
728                         reply_outbuf(req, 3, 0);
729                 }
730
731                 if ((message_push_string(&req->outbuf, server_devicetype,
732                                          STR_TERMINATE|STR_ASCII) == -1)
733                     || (message_push_string(&req->outbuf, fstype,
734                                             STR_TERMINATE) == -1)) {
735                         reply_nterror(req, NT_STATUS_NO_MEMORY);
736                         END_PROFILE(SMBtconX);
737                         return;
738                 }
739
740                 /* what does setting this bit do? It is set by NT4 and
741                    may affect the ability to autorun mounted cdroms */
742                 SSVAL(req->outbuf, smb_vwv2, SMB_SUPPORT_SEARCH_BITS|
743                       (lp_csc_policy(SNUM(conn)) << 2));
744
745                 if (lp_msdfs_root(SNUM(conn)) && lp_host_msdfs()) {
746                         DEBUG(2,("Serving %s as a Dfs root\n",
747                                  lp_servicename(SNUM(conn)) ));
748                         SSVAL(req->outbuf, smb_vwv2,
749                               SMB_SHARE_IN_DFS | SVAL(req->outbuf, smb_vwv2));
750                 }
751         }
752
753
754         DEBUG(3,("tconX service=%s \n",
755                  service));
756
757         /* set the incoming and outgoing tid to the just created one */
758         SSVAL(req->inbuf,smb_tid,conn->cnum);
759         SSVAL(req->outbuf,smb_tid,conn->cnum);
760
761         END_PROFILE(SMBtconX);
762
763         chain_reply(req);
764         return;
765 }
766
767 /****************************************************************************
768  Reply to an unknown type.
769 ****************************************************************************/
770
771 void reply_unknown_new(struct smb_request *req, uint8 type)
772 {
773         DEBUG(0, ("unknown command type (%s): type=%d (0x%X)\n",
774                   smb_fn_name(type), type, type));
775         reply_doserror(req, ERRSRV, ERRunknownsmb);
776         return;
777 }
778
779 /****************************************************************************
780  Reply to an ioctl.
781  conn POINTER CAN BE NULL HERE !
782 ****************************************************************************/
783
784 void reply_ioctl(struct smb_request *req)
785 {
786         connection_struct *conn = req->conn;
787         uint16 device;
788         uint16 function;
789         uint32 ioctl_code;
790         int replysize;
791         char *p;
792
793         START_PROFILE(SMBioctl);
794
795         if (req->wct < 3) {
796                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
797                 END_PROFILE(SMBioctl);
798                 return;
799         }
800
801         device     = SVAL(req->vwv+1, 0);
802         function   = SVAL(req->vwv+2, 0);
803         ioctl_code = (device << 16) + function;
804
805         DEBUG(4, ("Received IOCTL (code 0x%x)\n", ioctl_code));
806
807         switch (ioctl_code) {
808             case IOCTL_QUERY_JOB_INFO:
809                     replysize = 32;
810                     break;
811             default:
812                     reply_doserror(req, ERRSRV, ERRnosupport);
813                     END_PROFILE(SMBioctl);
814                     return;
815         }
816
817         reply_outbuf(req, 8, replysize+1);
818         SSVAL(req->outbuf,smb_vwv1,replysize); /* Total data bytes returned */
819         SSVAL(req->outbuf,smb_vwv5,replysize); /* Data bytes this buffer */
820         SSVAL(req->outbuf,smb_vwv6,52);        /* Offset to data */
821         p = smb_buf(req->outbuf);
822         memset(p, '\0', replysize+1); /* valgrind-safe. */
823         p += 1;          /* Allow for alignment */
824
825         switch (ioctl_code) {
826                 case IOCTL_QUERY_JOB_INFO:                  
827                 {
828                         files_struct *fsp = file_fsp(
829                                 req, SVAL(req->vwv+0, 0));
830                         if (!fsp) {
831                                 reply_doserror(req, ERRDOS, ERRbadfid);
832                                 END_PROFILE(SMBioctl);
833                                 return;
834                         }
835                         SSVAL(p,0,fsp->rap_print_jobid);             /* Job number */
836                         srvstr_push((char *)req->outbuf, req->flags2, p+2,
837                                     global_myname(), 15,
838                                     STR_TERMINATE|STR_ASCII);
839                         if (conn) {
840                                 srvstr_push((char *)req->outbuf, req->flags2,
841                                             p+18, lp_servicename(SNUM(conn)),
842                                             13, STR_TERMINATE|STR_ASCII);
843                         } else {
844                                 memset(p+18, 0, 13);
845                         }
846                         break;
847                 }
848         }
849
850         END_PROFILE(SMBioctl);
851         return;
852 }
853
854 /****************************************************************************
855  Strange checkpath NTSTATUS mapping.
856 ****************************************************************************/
857
858 static NTSTATUS map_checkpath_error(uint16_t flags2, NTSTATUS status)
859 {
860         /* Strange DOS error code semantics only for checkpath... */
861         if (!(flags2 & FLAGS2_32_BIT_ERROR_CODES)) {
862                 if (NT_STATUS_EQUAL(NT_STATUS_OBJECT_NAME_INVALID,status)) {
863                         /* We need to map to ERRbadpath */
864                         return NT_STATUS_OBJECT_PATH_NOT_FOUND;
865                 }
866         }
867         return status;
868 }
869
870 /****************************************************************************
871  Reply to a checkpath.
872 ****************************************************************************/
873
874 void reply_checkpath(struct smb_request *req)
875 {
876         connection_struct *conn = req->conn;
877         char *name = NULL;
878         SMB_STRUCT_STAT sbuf;
879         NTSTATUS status;
880         TALLOC_CTX *ctx = talloc_tos();
881
882         START_PROFILE(SMBcheckpath);
883
884         srvstr_get_path_req(ctx, req, &name, (const char *)req->buf + 1,
885                             STR_TERMINATE, &status);
886
887         if (!NT_STATUS_IS_OK(status)) {
888                 status = map_checkpath_error(req->flags2, status);
889                 reply_nterror(req, status);
890                 END_PROFILE(SMBcheckpath);
891                 return;
892         }
893
894         status = resolve_dfspath(ctx, conn,
895                         req->flags2 & FLAGS2_DFS_PATHNAMES,
896                         name,
897                         &name);
898         if (!NT_STATUS_IS_OK(status)) {
899                 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
900                         reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
901                                         ERRSRV, ERRbadpath);
902                         END_PROFILE(SMBcheckpath);
903                         return;
904                 }
905                 goto path_err;
906         }
907
908         DEBUG(3,("reply_checkpath %s mode=%d\n", name, (int)SVAL(req->vwv+0, 0)));
909
910         status = unix_convert(ctx, conn, name, False, &name, NULL, &sbuf);
911         if (!NT_STATUS_IS_OK(status)) {
912                 goto path_err;
913         }
914
915         status = check_name(conn, name);
916         if (!NT_STATUS_IS_OK(status)) {
917                 DEBUG(3,("reply_checkpath: check_name of %s failed (%s)\n",name,nt_errstr(status)));
918                 goto path_err;
919         }
920
921         if (!VALID_STAT(sbuf) && (SMB_VFS_STAT(conn,name,&sbuf) != 0)) {
922                 DEBUG(3,("reply_checkpath: stat of %s failed (%s)\n",name,strerror(errno)));
923                 status = map_nt_error_from_unix(errno);
924                 goto path_err;
925         }
926
927         if (!S_ISDIR(sbuf.st_mode)) {
928                 reply_botherror(req, NT_STATUS_NOT_A_DIRECTORY,
929                                 ERRDOS, ERRbadpath);
930                 END_PROFILE(SMBcheckpath);
931                 return;
932         }
933
934         reply_outbuf(req, 0, 0);
935
936         END_PROFILE(SMBcheckpath);
937         return;
938
939   path_err:
940
941         END_PROFILE(SMBcheckpath);
942
943         /* We special case this - as when a Windows machine
944                 is parsing a path is steps through the components
945                 one at a time - if a component fails it expects
946                 ERRbadpath, not ERRbadfile.
947         */
948         status = map_checkpath_error(req->flags2, status);
949         if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
950                 /*
951                  * Windows returns different error codes if
952                  * the parent directory is valid but not the
953                  * last component - it returns NT_STATUS_OBJECT_NAME_NOT_FOUND
954                  * for that case and NT_STATUS_OBJECT_PATH_NOT_FOUND
955                  * if the path is invalid.
956                  */
957                 reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
958                                 ERRDOS, ERRbadpath);
959                 return;
960         }
961
962         reply_nterror(req, status);
963 }
964
965 /****************************************************************************
966  Reply to a getatr.
967 ****************************************************************************/
968
969 void reply_getatr(struct smb_request *req)
970 {
971         connection_struct *conn = req->conn;
972         char *fname = NULL;
973         SMB_STRUCT_STAT sbuf;
974         int mode=0;
975         SMB_OFF_T size=0;
976         time_t mtime=0;
977         const char *p;
978         NTSTATUS status;
979         TALLOC_CTX *ctx = talloc_tos();
980
981         START_PROFILE(SMBgetatr);
982
983         p = (const char *)req->buf + 1;
984         p += srvstr_get_path_req(ctx, req, &fname, p, STR_TERMINATE, &status);
985         if (!NT_STATUS_IS_OK(status)) {
986                 reply_nterror(req, status);
987                 END_PROFILE(SMBgetatr);
988                 return;
989         }
990
991         status = resolve_dfspath(ctx, conn,
992                                 req->flags2 & FLAGS2_DFS_PATHNAMES,
993                                 fname,
994                                 &fname);
995         if (!NT_STATUS_IS_OK(status)) {
996                 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
997                         reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
998                                         ERRSRV, ERRbadpath);
999                         END_PROFILE(SMBgetatr);
1000                         return;
1001                 }
1002                 reply_nterror(req, status);
1003                 END_PROFILE(SMBgetatr);
1004                 return;
1005         }
1006
1007         /* dos smetimes asks for a stat of "" - it returns a "hidden directory"
1008                 under WfWg - weird! */
1009         if (*fname == '\0') {
1010                 mode = aHIDDEN | aDIR;
1011                 if (!CAN_WRITE(conn)) {
1012                         mode |= aRONLY;
1013                 }
1014                 size = 0;
1015                 mtime = 0;
1016         } else {
1017                 status = unix_convert(ctx, conn, fname, False, &fname, NULL,&sbuf);
1018                 if (!NT_STATUS_IS_OK(status)) {
1019                         reply_nterror(req, status);
1020                         END_PROFILE(SMBgetatr);
1021                         return;
1022                 }
1023                 status = check_name(conn, fname);
1024                 if (!NT_STATUS_IS_OK(status)) {
1025                         DEBUG(3,("reply_getatr: check_name of %s failed (%s)\n",fname,nt_errstr(status)));
1026                         reply_nterror(req, status);
1027                         END_PROFILE(SMBgetatr);
1028                         return;
1029                 }
1030                 if (!VALID_STAT(sbuf) && (SMB_VFS_STAT(conn,fname,&sbuf) != 0)) {
1031                         DEBUG(3,("reply_getatr: stat of %s failed (%s)\n",fname,strerror(errno)));
1032                         reply_unixerror(req, ERRDOS,ERRbadfile);
1033                         END_PROFILE(SMBgetatr);
1034                         return;
1035                 }
1036
1037                 mode = dos_mode(conn,fname,&sbuf);
1038                 size = sbuf.st_size;
1039                 mtime = sbuf.st_mtime;
1040                 if (mode & aDIR) {
1041                         size = 0;
1042                 }
1043         }
1044
1045         reply_outbuf(req, 10, 0);
1046
1047         SSVAL(req->outbuf,smb_vwv0,mode);
1048         if(lp_dos_filetime_resolution(SNUM(conn)) ) {
1049                 srv_put_dos_date3((char *)req->outbuf,smb_vwv1,mtime & ~1);
1050         } else {
1051                 srv_put_dos_date3((char *)req->outbuf,smb_vwv1,mtime);
1052         }
1053         SIVAL(req->outbuf,smb_vwv3,(uint32)size);
1054
1055         if (Protocol >= PROTOCOL_NT1) {
1056                 SSVAL(req->outbuf, smb_flg2,
1057                       SVAL(req->outbuf, smb_flg2) | FLAGS2_IS_LONG_NAME);
1058         }
1059
1060         DEBUG(3,("reply_getatr: name=%s mode=%d size=%u\n", fname, mode, (unsigned int)size ) );
1061
1062         END_PROFILE(SMBgetatr);
1063         return;
1064 }
1065
1066 /****************************************************************************
1067  Reply to a setatr.
1068 ****************************************************************************/
1069
1070 void reply_setatr(struct smb_request *req)
1071 {
1072         struct timespec ts[2];
1073         connection_struct *conn = req->conn;
1074         char *fname = NULL;
1075         int mode;
1076         time_t mtime;
1077         SMB_STRUCT_STAT sbuf;
1078         const char *p;
1079         NTSTATUS status;
1080         TALLOC_CTX *ctx = talloc_tos();
1081
1082         START_PROFILE(SMBsetatr);
1083
1084         ZERO_STRUCT(ts);
1085
1086         if (req->wct < 2) {
1087                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1088                 return;
1089         }
1090
1091         p = (const char *)req->buf + 1;
1092         p += srvstr_get_path_req(ctx, req, &fname, p, STR_TERMINATE, &status);
1093         if (!NT_STATUS_IS_OK(status)) {
1094                 reply_nterror(req, status);
1095                 END_PROFILE(SMBsetatr);
1096                 return;
1097         }
1098
1099         status = resolve_dfspath(ctx, conn,
1100                                 req->flags2 & FLAGS2_DFS_PATHNAMES,
1101                                 fname,
1102                                 &fname);
1103         if (!NT_STATUS_IS_OK(status)) {
1104                 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
1105                         reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
1106                                         ERRSRV, ERRbadpath);
1107                         END_PROFILE(SMBsetatr);
1108                         return;
1109                 }
1110                 reply_nterror(req, status);
1111                 END_PROFILE(SMBsetatr);
1112                 return;
1113         }
1114
1115         status = unix_convert(ctx, conn, fname, False, &fname, NULL, &sbuf);
1116         if (!NT_STATUS_IS_OK(status)) {
1117                 reply_nterror(req, status);
1118                 END_PROFILE(SMBsetatr);
1119                 return;
1120         }
1121
1122         status = check_name(conn, fname);
1123         if (!NT_STATUS_IS_OK(status)) {
1124                 reply_nterror(req, status);
1125                 END_PROFILE(SMBsetatr);
1126                 return;
1127         }
1128
1129         if (fname[0] == '.' && fname[1] == '\0') {
1130                 /*
1131                  * Not sure here is the right place to catch this
1132                  * condition. Might be moved to somewhere else later -- vl
1133                  */
1134                 reply_nterror(req, NT_STATUS_ACCESS_DENIED);
1135                 END_PROFILE(SMBsetatr);
1136                 return;
1137         }
1138
1139         mode = SVAL(req->vwv+0, 0);
1140         mtime = srv_make_unix_date3(req->vwv+1);
1141
1142         ts[1] = convert_time_t_to_timespec(mtime);
1143         status = smb_set_file_time(conn, NULL, fname,
1144                                    &sbuf, ts, true);
1145         if (!NT_STATUS_IS_OK(status)) {
1146                 reply_unixerror(req, ERRDOS, ERRnoaccess);
1147                 END_PROFILE(SMBsetatr);
1148                 return;
1149         }
1150
1151         if (mode != FILE_ATTRIBUTE_NORMAL) {
1152                 if (VALID_STAT_OF_DIR(sbuf))
1153                         mode |= aDIR;
1154                 else
1155                         mode &= ~aDIR;
1156
1157                 if (file_set_dosmode(conn,fname,mode,&sbuf,NULL,false) != 0) {
1158                         reply_unixerror(req, ERRDOS, ERRnoaccess);
1159                         END_PROFILE(SMBsetatr);
1160                         return;
1161                 }
1162         }
1163
1164         reply_outbuf(req, 0, 0);
1165
1166         DEBUG( 3, ( "setatr name=%s mode=%d\n", fname, mode ) );
1167
1168         END_PROFILE(SMBsetatr);
1169         return;
1170 }
1171
1172 /****************************************************************************
1173  Reply to a dskattr.
1174 ****************************************************************************/
1175
1176 void reply_dskattr(struct smb_request *req)
1177 {
1178         connection_struct *conn = req->conn;
1179         uint64_t dfree,dsize,bsize;
1180         START_PROFILE(SMBdskattr);
1181
1182         if (get_dfree_info(conn,".",True,&bsize,&dfree,&dsize) == (uint64_t)-1) {
1183                 reply_unixerror(req, ERRHRD, ERRgeneral);
1184                 END_PROFILE(SMBdskattr);
1185                 return;
1186         }
1187
1188         reply_outbuf(req, 5, 0);
1189
1190         if (Protocol <= PROTOCOL_LANMAN2) {
1191                 double total_space, free_space;
1192                 /* we need to scale this to a number that DOS6 can handle. We
1193                    use floating point so we can handle large drives on systems
1194                    that don't have 64 bit integers 
1195
1196                    we end up displaying a maximum of 2G to DOS systems
1197                 */
1198                 total_space = dsize * (double)bsize;
1199                 free_space = dfree * (double)bsize;
1200
1201                 dsize = (uint64_t)((total_space+63*512) / (64*512));
1202                 dfree = (uint64_t)((free_space+63*512) / (64*512));
1203
1204                 if (dsize > 0xFFFF) dsize = 0xFFFF;
1205                 if (dfree > 0xFFFF) dfree = 0xFFFF;
1206
1207                 SSVAL(req->outbuf,smb_vwv0,dsize);
1208                 SSVAL(req->outbuf,smb_vwv1,64); /* this must be 64 for dos systems */
1209                 SSVAL(req->outbuf,smb_vwv2,512); /* and this must be 512 */
1210                 SSVAL(req->outbuf,smb_vwv3,dfree);
1211         } else {
1212                 SSVAL(req->outbuf,smb_vwv0,dsize);
1213                 SSVAL(req->outbuf,smb_vwv1,bsize/512);
1214                 SSVAL(req->outbuf,smb_vwv2,512);
1215                 SSVAL(req->outbuf,smb_vwv3,dfree);
1216         }
1217
1218         DEBUG(3,("dskattr dfree=%d\n", (unsigned int)dfree));
1219
1220         END_PROFILE(SMBdskattr);
1221         return;
1222 }
1223
1224 /****************************************************************************
1225  Reply to a search.
1226  Can be called from SMBsearch, SMBffirst or SMBfunique.
1227 ****************************************************************************/
1228
1229 void reply_search(struct smb_request *req)
1230 {
1231         connection_struct *conn = req->conn;
1232         const char *mask = NULL;
1233         char *directory = NULL;
1234         char *fname = NULL;
1235         SMB_OFF_T size;
1236         uint32 mode;
1237         time_t date;
1238         uint32 dirtype;
1239         unsigned int numentries = 0;
1240         unsigned int maxentries = 0;
1241         bool finished = False;
1242         const char *p;
1243         int status_len;
1244         char *path = NULL;
1245         char status[21];
1246         int dptr_num= -1;
1247         bool check_descend = False;
1248         bool expect_close = False;
1249         NTSTATUS nt_status;
1250         bool mask_contains_wcard = False;
1251         bool allow_long_path_components = (req->flags2 & FLAGS2_LONG_PATH_COMPONENTS) ? True : False;
1252         TALLOC_CTX *ctx = talloc_tos();
1253         bool ask_sharemode = lp_parm_bool(SNUM(conn), "smbd", "search ask sharemode", true);
1254
1255         START_PROFILE(SMBsearch);
1256
1257         if (req->wct < 2) {
1258                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1259                 END_PROFILE(SMBsearch);
1260                 return;
1261         }
1262
1263         if (lp_posix_pathnames()) {
1264                 reply_unknown_new(req, req->cmd);
1265                 END_PROFILE(SMBsearch);
1266                 return;
1267         }
1268
1269         /* If we were called as SMBffirst then we must expect close. */
1270         if(req->cmd == SMBffirst) {
1271                 expect_close = True;
1272         }
1273
1274         reply_outbuf(req, 1, 3);
1275         maxentries = SVAL(req->vwv+0, 0);
1276         dirtype = SVAL(req->vwv+1, 0);
1277         p = (const char *)req->buf + 1;
1278         p += srvstr_get_path_req_wcard(ctx, req, &path, p, STR_TERMINATE,
1279                                        &nt_status, &mask_contains_wcard);
1280         if (!NT_STATUS_IS_OK(nt_status)) {
1281                 reply_nterror(req, nt_status);
1282                 END_PROFILE(SMBsearch);
1283                 return;
1284         }
1285
1286         nt_status = resolve_dfspath_wcard(ctx, conn,
1287                                           req->flags2 & FLAGS2_DFS_PATHNAMES,
1288                                           path,
1289                                           &path,
1290                                           &mask_contains_wcard);
1291         if (!NT_STATUS_IS_OK(nt_status)) {
1292                 if (NT_STATUS_EQUAL(nt_status,NT_STATUS_PATH_NOT_COVERED)) {
1293                         reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
1294                                         ERRSRV, ERRbadpath);
1295                         END_PROFILE(SMBsearch);
1296                         return;
1297                 }
1298                 reply_nterror(req, nt_status);
1299                 END_PROFILE(SMBsearch);
1300                 return;
1301         }
1302
1303         p++;
1304         status_len = SVAL(p, 0);
1305         p += 2;
1306
1307         /* dirtype &= ~aDIR; */
1308
1309         if (status_len == 0) {
1310                 SMB_STRUCT_STAT sbuf;
1311
1312                 nt_status = unix_convert(ctx, conn, path, True,
1313                                 &directory, NULL, &sbuf);
1314                 if (!NT_STATUS_IS_OK(nt_status)) {
1315                         reply_nterror(req, nt_status);
1316                         END_PROFILE(SMBsearch);
1317                         return;
1318                 }
1319
1320                 nt_status = check_name(conn, directory);
1321                 if (!NT_STATUS_IS_OK(nt_status)) {
1322                         reply_nterror(req, nt_status);
1323                         END_PROFILE(SMBsearch);
1324                         return;
1325                 }
1326
1327                 p = strrchr_m(directory,'/');
1328                 if ((p != NULL) && (*directory != '/')) {
1329                         mask = p + 1;
1330                         directory = talloc_strndup(ctx, directory,
1331                                                    PTR_DIFF(p, directory));
1332                 } else {
1333                         mask = directory;
1334                         directory = talloc_strdup(ctx,".");
1335                 }
1336
1337                 if (!directory) {
1338                         reply_nterror(req, NT_STATUS_NO_MEMORY);
1339                         END_PROFILE(SMBsearch);
1340                         return;
1341                 }
1342
1343                 memset((char *)status,'\0',21);
1344                 SCVAL(status,0,(dirtype & 0x1F));
1345
1346                 nt_status = dptr_create(conn,
1347                                         directory,
1348                                         True,
1349                                         expect_close,
1350                                         req->smbpid,
1351                                         mask,
1352                                         mask_contains_wcard,
1353                                         dirtype,
1354                                         &conn->dirptr);
1355                 if (!NT_STATUS_IS_OK(nt_status)) {
1356                         reply_nterror(req, nt_status);
1357                         END_PROFILE(SMBsearch);
1358                         return;
1359                 }
1360                 dptr_num = dptr_dnum(conn->dirptr);
1361         } else {
1362                 int status_dirtype;
1363
1364                 memcpy(status,p,21);
1365                 status_dirtype = CVAL(status,0) & 0x1F;
1366                 if (status_dirtype != (dirtype & 0x1F)) {
1367                         dirtype = status_dirtype;
1368                 }
1369
1370                 conn->dirptr = dptr_fetch(status+12,&dptr_num);
1371                 if (!conn->dirptr) {
1372                         goto SearchEmpty;
1373                 }
1374                 string_set(&conn->dirpath,dptr_path(dptr_num));
1375                 mask = dptr_wcard(dptr_num);
1376                 if (!mask) {
1377                         goto SearchEmpty;
1378                 }
1379                 /*
1380                  * For a 'continue' search we have no string. So
1381                  * check from the initial saved string.
1382                  */
1383                 mask_contains_wcard = ms_has_wild(mask);
1384                 dirtype = dptr_attr(dptr_num);
1385         }
1386
1387         DEBUG(4,("dptr_num is %d\n",dptr_num));
1388
1389         if ((dirtype&0x1F) == aVOLID) {
1390                 char buf[DIR_STRUCT_SIZE];
1391                 memcpy(buf,status,21);
1392                 if (!make_dir_struct(ctx,buf,"???????????",volume_label(SNUM(conn)),
1393                                 0,aVOLID,0,!allow_long_path_components)) {
1394                         reply_nterror(req, NT_STATUS_NO_MEMORY);
1395                         END_PROFILE(SMBsearch);
1396                         return;
1397                 }
1398                 dptr_fill(buf+12,dptr_num);
1399                 if (dptr_zero(buf+12) && (status_len==0)) {
1400                         numentries = 1;
1401                 } else {
1402                         numentries = 0;
1403                 }
1404                 if (message_push_blob(&req->outbuf,
1405                                       data_blob_const(buf, sizeof(buf)))
1406                     == -1) {
1407                         reply_nterror(req, NT_STATUS_NO_MEMORY);
1408                         END_PROFILE(SMBsearch);
1409                         return;
1410                 }
1411         } else {
1412                 unsigned int i;
1413                 maxentries = MIN(
1414                         maxentries,
1415                         ((BUFFER_SIZE -
1416                           ((uint8 *)smb_buf(req->outbuf) + 3 - req->outbuf))
1417                          /DIR_STRUCT_SIZE));
1418
1419                 DEBUG(8,("dirpath=<%s> dontdescend=<%s>\n",
1420                         conn->dirpath,lp_dontdescend(SNUM(conn))));
1421                 if (in_list(conn->dirpath, lp_dontdescend(SNUM(conn)),True)) {
1422                         check_descend = True;
1423                 }
1424
1425                 for (i=numentries;(i<maxentries) && !finished;i++) {
1426                         finished = !get_dir_entry(ctx,
1427                                                   conn,
1428                                                   mask,
1429                                                   dirtype,
1430                                                   &fname,
1431                                                   &size,
1432                                                   &mode,
1433                                                   &date,
1434                                                   check_descend,
1435                                                   ask_sharemode);
1436                         if (!finished) {
1437                                 char buf[DIR_STRUCT_SIZE];
1438                                 memcpy(buf,status,21);
1439                                 if (!make_dir_struct(ctx,
1440                                                 buf,
1441                                                 mask,
1442                                                 fname,
1443                                                 size,
1444                                                 mode,
1445                                                 date,
1446                                                 !allow_long_path_components)) {
1447                                         reply_nterror(req, NT_STATUS_NO_MEMORY);
1448                                         END_PROFILE(SMBsearch);
1449                                         return;
1450                                 }
1451                                 if (!dptr_fill(buf+12,dptr_num)) {
1452                                         break;
1453                                 }
1454                                 if (message_push_blob(&req->outbuf,
1455                                                       data_blob_const(buf, sizeof(buf)))
1456                                     == -1) {
1457                                         reply_nterror(req, NT_STATUS_NO_MEMORY);
1458                                         END_PROFILE(SMBsearch);
1459                                         return;
1460                                 }
1461                                 numentries++;
1462                         }
1463                 }
1464         }
1465
1466   SearchEmpty:
1467
1468         /* If we were called as SMBffirst with smb_search_id == NULL
1469                 and no entries were found then return error and close dirptr 
1470                 (X/Open spec) */
1471
1472         if (numentries == 0) {
1473                 dptr_close(&dptr_num);
1474         } else if(expect_close && status_len == 0) {
1475                 /* Close the dptr - we know it's gone */
1476                 dptr_close(&dptr_num);
1477         }
1478
1479         /* If we were called as SMBfunique, then we can close the dirptr now ! */
1480         if(dptr_num >= 0 && req->cmd == SMBfunique) {
1481                 dptr_close(&dptr_num);
1482         }
1483
1484         if ((numentries == 0) && !mask_contains_wcard) {
1485                 reply_botherror(req, STATUS_NO_MORE_FILES, ERRDOS, ERRnofiles);
1486                 END_PROFILE(SMBsearch);
1487                 return;
1488         }
1489
1490         SSVAL(req->outbuf,smb_vwv0,numentries);
1491         SSVAL(req->outbuf,smb_vwv1,3 + numentries * DIR_STRUCT_SIZE);
1492         SCVAL(smb_buf(req->outbuf),0,5);
1493         SSVAL(smb_buf(req->outbuf),1,numentries*DIR_STRUCT_SIZE);
1494
1495         /* The replies here are never long name. */
1496         SSVAL(req->outbuf, smb_flg2,
1497               SVAL(req->outbuf, smb_flg2) & (~FLAGS2_IS_LONG_NAME));
1498         if (!allow_long_path_components) {
1499                 SSVAL(req->outbuf, smb_flg2,
1500                       SVAL(req->outbuf, smb_flg2)
1501                       & (~FLAGS2_LONG_PATH_COMPONENTS));
1502         }
1503
1504         /* This SMB *always* returns ASCII names. Remove the unicode bit in flags2. */
1505         SSVAL(req->outbuf, smb_flg2,
1506               (SVAL(req->outbuf, smb_flg2) & (~FLAGS2_UNICODE_STRINGS)));
1507
1508         if (!directory) {
1509                 directory = dptr_path(dptr_num);
1510         }
1511
1512         DEBUG(4,("%s mask=%s path=%s dtype=%d nument=%u of %u\n",
1513                 smb_fn_name(req->cmd),
1514                 mask,
1515                 directory ? directory : "./",
1516                 dirtype,
1517                 numentries,
1518                 maxentries ));
1519
1520         END_PROFILE(SMBsearch);
1521         return;
1522 }
1523
1524 /****************************************************************************
1525  Reply to a fclose (stop directory search).
1526 ****************************************************************************/
1527
1528 void reply_fclose(struct smb_request *req)
1529 {
1530         int status_len;
1531         char status[21];
1532         int dptr_num= -2;
1533         const char *p;
1534         char *path = NULL;
1535         NTSTATUS err;
1536         bool path_contains_wcard = False;
1537         TALLOC_CTX *ctx = talloc_tos();
1538
1539         START_PROFILE(SMBfclose);
1540
1541         if (lp_posix_pathnames()) {
1542                 reply_unknown_new(req, req->cmd);
1543                 END_PROFILE(SMBfclose);
1544                 return;
1545         }
1546
1547         p = (const char *)req->buf + 1;
1548         p += srvstr_get_path_req_wcard(ctx, req, &path, p, STR_TERMINATE,
1549                                        &err, &path_contains_wcard);
1550         if (!NT_STATUS_IS_OK(err)) {
1551                 reply_nterror(req, err);
1552                 END_PROFILE(SMBfclose);
1553                 return;
1554         }
1555         p++;
1556         status_len = SVAL(p,0);
1557         p += 2;
1558
1559         if (status_len == 0) {
1560                 reply_doserror(req, ERRSRV, ERRsrverror);
1561                 END_PROFILE(SMBfclose);
1562                 return;
1563         }
1564
1565         memcpy(status,p,21);
1566
1567         if(dptr_fetch(status+12,&dptr_num)) {
1568                 /*  Close the dptr - we know it's gone */
1569                 dptr_close(&dptr_num);
1570         }
1571
1572         reply_outbuf(req, 1, 0);
1573         SSVAL(req->outbuf,smb_vwv0,0);
1574
1575         DEBUG(3,("search close\n"));
1576
1577         END_PROFILE(SMBfclose);
1578         return;
1579 }
1580
1581 /****************************************************************************
1582  Reply to an open.
1583 ****************************************************************************/
1584
1585 void reply_open(struct smb_request *req)
1586 {
1587         connection_struct *conn = req->conn;
1588         char *fname = NULL;
1589         uint32 fattr=0;
1590         SMB_OFF_T size = 0;
1591         time_t mtime=0;
1592         int info;
1593         SMB_STRUCT_STAT sbuf;
1594         files_struct *fsp;
1595         int oplock_request;
1596         int deny_mode;
1597         uint32 dos_attr;
1598         uint32 access_mask;
1599         uint32 share_mode;
1600         uint32 create_disposition;
1601         uint32 create_options = 0;
1602         NTSTATUS status;
1603         TALLOC_CTX *ctx = talloc_tos();
1604
1605         START_PROFILE(SMBopen);
1606
1607         if (req->wct < 2) {
1608                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1609                 END_PROFILE(SMBopen);
1610                 return;
1611         }
1612
1613         oplock_request = CORE_OPLOCK_REQUEST(req->inbuf);
1614         deny_mode = SVAL(req->vwv+0, 0);
1615         dos_attr = SVAL(req->vwv+1, 0);
1616
1617         srvstr_get_path_req(ctx, req, &fname, (const char *)req->buf+1,
1618                             STR_TERMINATE, &status);
1619         if (!NT_STATUS_IS_OK(status)) {
1620                 reply_nterror(req, status);
1621                 END_PROFILE(SMBopen);
1622                 return;
1623         }
1624
1625         if (!map_open_params_to_ntcreate(
1626                     fname, deny_mode, OPENX_FILE_EXISTS_OPEN, &access_mask,
1627                     &share_mode, &create_disposition, &create_options)) {
1628                 reply_nterror(req, NT_STATUS_DOS(ERRDOS, ERRbadaccess));
1629                 END_PROFILE(SMBopen);
1630                 return;
1631         }
1632
1633         status = create_file(conn,                      /* conn */
1634                              req,                       /* req */
1635                              0,                         /* root_dir_fid */
1636                              fname,                     /* fname */
1637                              access_mask,               /* access_mask */
1638                              share_mode,                /* share_access */
1639                              create_disposition,        /* create_disposition*/
1640                              create_options,            /* create_options */
1641                              dos_attr,                  /* file_attributes */
1642                              oplock_request,            /* oplock_request */
1643                              0,                         /* allocation_size */
1644                              NULL,                      /* sd */
1645                              NULL,                      /* ea_list */
1646                              &fsp,                      /* result */
1647                              &info,                     /* pinfo */
1648                              &sbuf);                    /* psbuf */
1649
1650         if (!NT_STATUS_IS_OK(status)) {
1651                 if (open_was_deferred(req->mid)) {
1652                         /* We have re-scheduled this call. */
1653                         END_PROFILE(SMBopen);
1654                         return;
1655                 }
1656                 reply_openerror(req, status);
1657                 END_PROFILE(SMBopen);
1658                 return;
1659         }
1660
1661         size = sbuf.st_size;
1662         fattr = dos_mode(conn,fsp->fsp_name,&sbuf);
1663         mtime = sbuf.st_mtime;
1664
1665         if (fattr & aDIR) {
1666                 DEBUG(3,("attempt to open a directory %s\n",fsp->fsp_name));
1667                 close_file(req, fsp, ERROR_CLOSE);
1668                 reply_doserror(req, ERRDOS,ERRnoaccess);
1669                 END_PROFILE(SMBopen);
1670                 return;
1671         }
1672
1673         reply_outbuf(req, 7, 0);
1674         SSVAL(req->outbuf,smb_vwv0,fsp->fnum);
1675         SSVAL(req->outbuf,smb_vwv1,fattr);
1676         if(lp_dos_filetime_resolution(SNUM(conn)) ) {
1677                 srv_put_dos_date3((char *)req->outbuf,smb_vwv2,mtime & ~1);
1678         } else {
1679                 srv_put_dos_date3((char *)req->outbuf,smb_vwv2,mtime);
1680         }
1681         SIVAL(req->outbuf,smb_vwv4,(uint32)size);
1682         SSVAL(req->outbuf,smb_vwv6,deny_mode);
1683
1684         if (oplock_request && lp_fake_oplocks(SNUM(conn))) {
1685                 SCVAL(req->outbuf,smb_flg,
1686                       CVAL(req->outbuf,smb_flg)|CORE_OPLOCK_GRANTED);
1687         }
1688
1689         if(EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
1690                 SCVAL(req->outbuf,smb_flg,
1691                       CVAL(req->outbuf,smb_flg)|CORE_OPLOCK_GRANTED);
1692         }
1693         END_PROFILE(SMBopen);
1694         return;
1695 }
1696
1697 /****************************************************************************
1698  Reply to an open and X.
1699 ****************************************************************************/
1700
1701 void reply_open_and_X(struct smb_request *req)
1702 {
1703         connection_struct *conn = req->conn;
1704         char *fname = NULL;
1705         uint16 open_flags;
1706         int deny_mode;
1707         uint32 smb_attr;
1708         /* Breakout the oplock request bits so we can set the
1709                 reply bits separately. */
1710         int ex_oplock_request;
1711         int core_oplock_request;
1712         int oplock_request;
1713 #if 0
1714         int smb_sattr = SVAL(req->vwv+4, 0);
1715         uint32 smb_time = make_unix_date3(req->vwv+6);
1716 #endif
1717         int smb_ofun;
1718         uint32 fattr=0;
1719         int mtime=0;
1720         SMB_STRUCT_STAT sbuf;
1721         int smb_action = 0;
1722         files_struct *fsp;
1723         NTSTATUS status;
1724         uint64_t allocation_size;
1725         ssize_t retval = -1;
1726         uint32 access_mask;
1727         uint32 share_mode;
1728         uint32 create_disposition;
1729         uint32 create_options = 0;
1730         TALLOC_CTX *ctx = talloc_tos();
1731
1732         START_PROFILE(SMBopenX);
1733
1734         if (req->wct < 15) {
1735                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1736                 END_PROFILE(SMBopenX);
1737                 return;
1738         }
1739
1740         open_flags = SVAL(req->vwv+2, 0);
1741         deny_mode = SVAL(req->vwv+3, 0);
1742         smb_attr = SVAL(req->vwv+5, 0);
1743         ex_oplock_request = EXTENDED_OPLOCK_REQUEST(req->inbuf);
1744         core_oplock_request = CORE_OPLOCK_REQUEST(req->inbuf);
1745         oplock_request = ex_oplock_request | core_oplock_request;
1746         smb_ofun = SVAL(req->vwv+8, 0);
1747         allocation_size = (uint64_t)IVAL(req->vwv+9, 0);
1748
1749         /* If it's an IPC, pass off the pipe handler. */
1750         if (IS_IPC(conn)) {
1751                 if (lp_nt_pipe_support()) {
1752                         reply_open_pipe_and_X(conn, req);
1753                 } else {
1754                         reply_doserror(req, ERRSRV, ERRaccess);
1755                 }
1756                 END_PROFILE(SMBopenX);
1757                 return;
1758         }
1759
1760         /* XXXX we need to handle passed times, sattr and flags */
1761         srvstr_get_path_req(ctx, req, &fname, (const char *)req->buf,
1762                         STR_TERMINATE, &status);
1763         if (!NT_STATUS_IS_OK(status)) {
1764                 reply_nterror(req, status);
1765                 END_PROFILE(SMBopenX);
1766                 return;
1767         }
1768
1769         if (!map_open_params_to_ntcreate(
1770                     fname, deny_mode, smb_ofun, &access_mask,
1771                     &share_mode, &create_disposition, &create_options)) {
1772                 reply_nterror(req, NT_STATUS_DOS(ERRDOS, ERRbadaccess));
1773                 END_PROFILE(SMBopenX);
1774                 return;
1775         }
1776
1777         status = create_file(conn,                      /* conn */
1778                              req,                       /* req */
1779                              0,                         /* root_dir_fid */
1780                              fname,                     /* fname */
1781                              access_mask,               /* access_mask */
1782                              share_mode,                /* share_access */
1783                              create_disposition,        /* create_disposition*/
1784                              create_options,            /* create_options */
1785                              smb_attr,                  /* file_attributes */
1786                              oplock_request,            /* oplock_request */
1787                              0,                         /* allocation_size */
1788                              NULL,                      /* sd */
1789                              NULL,                      /* ea_list */
1790                              &fsp,                      /* result */
1791                              &smb_action,               /* pinfo */
1792                              &sbuf);                    /* psbuf */
1793
1794         if (!NT_STATUS_IS_OK(status)) {
1795                 END_PROFILE(SMBopenX);
1796                 if (open_was_deferred(req->mid)) {
1797                         /* We have re-scheduled this call. */
1798                         return;
1799                 }
1800                 reply_openerror(req, status);
1801                 return;
1802         }
1803
1804         /* Setting the "size" field in vwv9 and vwv10 causes the file to be set to this size,
1805            if the file is truncated or created. */
1806         if (((smb_action == FILE_WAS_CREATED) || (smb_action == FILE_WAS_OVERWRITTEN)) && allocation_size) {
1807                 fsp->initial_allocation_size = smb_roundup(fsp->conn, allocation_size);
1808                 if (vfs_allocate_file_space(fsp, fsp->initial_allocation_size) == -1) {
1809                         close_file(req, fsp, ERROR_CLOSE);
1810                         reply_nterror(req, NT_STATUS_DISK_FULL);
1811                         END_PROFILE(SMBopenX);
1812                         return;
1813                 }
1814                 retval = vfs_set_filelen(fsp, (SMB_OFF_T)allocation_size);
1815                 if (retval < 0) {
1816                         close_file(req, fsp, ERROR_CLOSE);
1817                         reply_nterror(req, NT_STATUS_DISK_FULL);
1818                         END_PROFILE(SMBopenX);
1819                         return;
1820                 }
1821                 sbuf.st_size = get_allocation_size(conn,fsp,&sbuf);
1822         }
1823
1824         fattr = dos_mode(conn,fsp->fsp_name,&sbuf);
1825         mtime = sbuf.st_mtime;
1826         if (fattr & aDIR) {
1827                 close_file(req, fsp, ERROR_CLOSE);
1828                 reply_doserror(req, ERRDOS, ERRnoaccess);
1829                 END_PROFILE(SMBopenX);
1830                 return;
1831         }
1832
1833         /* If the caller set the extended oplock request bit
1834                 and we granted one (by whatever means) - set the
1835                 correct bit for extended oplock reply.
1836         */
1837
1838         if (ex_oplock_request && lp_fake_oplocks(SNUM(conn))) {
1839                 smb_action |= EXTENDED_OPLOCK_GRANTED;
1840         }
1841
1842         if(ex_oplock_request && EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
1843                 smb_action |= EXTENDED_OPLOCK_GRANTED;
1844         }
1845
1846         /* If the caller set the core oplock request bit
1847                 and we granted one (by whatever means) - set the
1848                 correct bit for core oplock reply.
1849         */
1850
1851         if (open_flags & EXTENDED_RESPONSE_REQUIRED) {
1852                 reply_outbuf(req, 19, 0);
1853         } else {
1854                 reply_outbuf(req, 15, 0);
1855         }
1856
1857         if (core_oplock_request && lp_fake_oplocks(SNUM(conn))) {
1858                 SCVAL(req->outbuf, smb_flg,
1859                       CVAL(req->outbuf,smb_flg)|CORE_OPLOCK_GRANTED);
1860         }
1861
1862         if(core_oplock_request && EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
1863                 SCVAL(req->outbuf, smb_flg,
1864                       CVAL(req->outbuf,smb_flg)|CORE_OPLOCK_GRANTED);
1865         }
1866
1867         SSVAL(req->outbuf,smb_vwv2,fsp->fnum);
1868         SSVAL(req->outbuf,smb_vwv3,fattr);
1869         if(lp_dos_filetime_resolution(SNUM(conn)) ) {
1870                 srv_put_dos_date3((char *)req->outbuf,smb_vwv4,mtime & ~1);
1871         } else {
1872                 srv_put_dos_date3((char *)req->outbuf,smb_vwv4,mtime);
1873         }
1874         SIVAL(req->outbuf,smb_vwv6,(uint32)sbuf.st_size);
1875         SSVAL(req->outbuf,smb_vwv8,GET_OPENX_MODE(deny_mode));
1876         SSVAL(req->outbuf,smb_vwv11,smb_action);
1877
1878         if (open_flags & EXTENDED_RESPONSE_REQUIRED) {
1879                 SIVAL(req->outbuf, smb_vwv15, STD_RIGHT_ALL_ACCESS);
1880         }
1881
1882         END_PROFILE(SMBopenX);
1883         chain_reply(req);
1884         return;
1885 }
1886
1887 /****************************************************************************
1888  Reply to a SMBulogoffX.
1889 ****************************************************************************/
1890
1891 void reply_ulogoffX(struct smb_request *req)
1892 {
1893         user_struct *vuser;
1894
1895         START_PROFILE(SMBulogoffX);
1896
1897         vuser = get_valid_user_struct(req->vuid);
1898
1899         if(vuser == NULL) {
1900                 DEBUG(3,("ulogoff, vuser id %d does not map to user.\n",
1901                          req->vuid));
1902         }
1903
1904         /* in user level security we are supposed to close any files
1905                 open by this user */
1906         if ((vuser != NULL) && (lp_security() != SEC_SHARE)) {
1907                 file_close_user(req->vuid);
1908         }
1909
1910         invalidate_vuid(req->vuid);
1911
1912         reply_outbuf(req, 2, 0);
1913
1914         DEBUG( 3, ( "ulogoffX vuid=%d\n", req->vuid ) );
1915
1916         END_PROFILE(SMBulogoffX);
1917         chain_reply(req);
1918 }
1919
1920 /****************************************************************************
1921  Reply to a mknew or a create.
1922 ****************************************************************************/
1923
1924 void reply_mknew(struct smb_request *req)
1925 {
1926         connection_struct *conn = req->conn;
1927         char *fname = NULL;
1928         uint32 fattr = 0;
1929         struct timespec ts[2];
1930         files_struct *fsp;
1931         int oplock_request = 0;
1932         SMB_STRUCT_STAT sbuf;
1933         NTSTATUS status;
1934         uint32 access_mask = FILE_GENERIC_READ | FILE_GENERIC_WRITE;
1935         uint32 share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
1936         uint32 create_disposition;
1937         uint32 create_options = 0;
1938         TALLOC_CTX *ctx = talloc_tos();
1939
1940         START_PROFILE(SMBcreate);
1941
1942         if (req->wct < 3) {
1943                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
1944                 END_PROFILE(SMBcreate);
1945                 return;
1946         }
1947
1948         fattr = SVAL(req->vwv+0, 0);
1949         oplock_request = CORE_OPLOCK_REQUEST(req->inbuf);
1950
1951         ts[1] = convert_time_t_to_timespec(srv_make_unix_date3(req->vwv+1));
1952                         /* mtime. */
1953
1954         srvstr_get_path_req(ctx, req, &fname, (const char *)req->buf + 1,
1955                             STR_TERMINATE, &status);
1956         if (!NT_STATUS_IS_OK(status)) {
1957                 reply_nterror(req, status);
1958                 END_PROFILE(SMBcreate);
1959                 return;
1960         }
1961
1962         if (fattr & aVOLID) {
1963                 DEBUG(0,("Attempt to create file (%s) with volid set - "
1964                         "please report this\n", fname));
1965         }
1966
1967         if(req->cmd == SMBmknew) {
1968                 /* We should fail if file exists. */
1969                 create_disposition = FILE_CREATE;
1970         } else {
1971                 /* Create if file doesn't exist, truncate if it does. */
1972                 create_disposition = FILE_OVERWRITE_IF;
1973         }
1974
1975         status = create_file(conn,                      /* conn */
1976                              req,                       /* req */
1977                              0,                         /* root_dir_fid */
1978                              fname,                     /* fname */
1979                              access_mask,               /* access_mask */
1980                              share_mode,                /* share_access */
1981                              create_disposition,        /* create_disposition*/
1982                              create_options,            /* create_options */
1983                              fattr,                     /* file_attributes */
1984                              oplock_request,            /* oplock_request */
1985                              0,                         /* allocation_size */
1986                              NULL,                      /* sd */
1987                              NULL,                      /* ea_list */
1988                              &fsp,                      /* result */
1989                              NULL,                      /* pinfo */
1990                              &sbuf);                    /* psbuf */
1991
1992         if (!NT_STATUS_IS_OK(status)) {
1993                 END_PROFILE(SMBcreate);
1994                 if (open_was_deferred(req->mid)) {
1995                         /* We have re-scheduled this call. */
1996                         return;
1997                 }
1998                 reply_openerror(req, status);
1999                 return;
2000         }
2001
2002         ts[0] = get_atimespec(&sbuf); /* atime. */
2003         status = smb_set_file_time(conn, fsp, fsp->fsp_name, &sbuf, ts, true);
2004         if (!NT_STATUS_IS_OK(status)) {
2005                 END_PROFILE(SMBcreate);
2006                 reply_openerror(req, status);
2007                 return;
2008         }
2009
2010         reply_outbuf(req, 1, 0);
2011         SSVAL(req->outbuf,smb_vwv0,fsp->fnum);
2012
2013         if (oplock_request && lp_fake_oplocks(SNUM(conn))) {
2014                 SCVAL(req->outbuf,smb_flg,
2015                                 CVAL(req->outbuf,smb_flg)|CORE_OPLOCK_GRANTED);
2016         }
2017
2018         if(EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
2019                 SCVAL(req->outbuf,smb_flg,
2020                                 CVAL(req->outbuf,smb_flg)|CORE_OPLOCK_GRANTED);
2021         }
2022
2023         DEBUG( 2, ( "reply_mknew: file %s\n", fsp->fsp_name ) );
2024         DEBUG( 3, ( "reply_mknew %s fd=%d dmode=0x%x\n",
2025                     fsp->fsp_name, fsp->fh->fd, (unsigned int)fattr ) );
2026
2027         END_PROFILE(SMBcreate);
2028         return;
2029 }
2030
2031 /****************************************************************************
2032  Reply to a create temporary file.
2033 ****************************************************************************/
2034
2035 void reply_ctemp(struct smb_request *req)
2036 {
2037         connection_struct *conn = req->conn;
2038         char *fname = NULL;
2039         uint32 fattr;
2040         files_struct *fsp;
2041         int oplock_request;
2042         int tmpfd;
2043         SMB_STRUCT_STAT sbuf;
2044         char *s;
2045         NTSTATUS status;
2046         TALLOC_CTX *ctx = talloc_tos();
2047
2048         START_PROFILE(SMBctemp);
2049
2050         if (req->wct < 3) {
2051                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2052                 END_PROFILE(SMBctemp);
2053                 return;
2054         }
2055
2056         fattr = SVAL(req->vwv+0, 0);
2057         oplock_request = CORE_OPLOCK_REQUEST(req->inbuf);
2058
2059         srvstr_get_path_req(ctx, req, &fname, (const char *)req->buf+1,
2060                             STR_TERMINATE, &status);
2061         if (!NT_STATUS_IS_OK(status)) {
2062                 reply_nterror(req, status);
2063                 END_PROFILE(SMBctemp);
2064                 return;
2065         }
2066         if (*fname) {
2067                 fname = talloc_asprintf(ctx,
2068                                 "%s/TMXXXXXX",
2069                                 fname);
2070         } else {
2071                 fname = talloc_strdup(ctx, "TMXXXXXX");
2072         }
2073
2074         if (!fname) {
2075                 reply_nterror(req, NT_STATUS_NO_MEMORY);
2076                 END_PROFILE(SMBctemp);
2077                 return;
2078         }
2079
2080         status = resolve_dfspath(ctx, conn,
2081                                 req->flags2 & FLAGS2_DFS_PATHNAMES,
2082                                 fname,
2083                                 &fname);
2084         if (!NT_STATUS_IS_OK(status)) {
2085                 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
2086                         reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
2087                                         ERRSRV, ERRbadpath);
2088                         END_PROFILE(SMBctemp);
2089                         return;
2090                 }
2091                 reply_nterror(req, status);
2092                 END_PROFILE(SMBctemp);
2093                 return;
2094         }
2095
2096         status = unix_convert(ctx, conn, fname, False, &fname, NULL, &sbuf);
2097         if (!NT_STATUS_IS_OK(status)) {
2098                 reply_nterror(req, status);
2099                 END_PROFILE(SMBctemp);
2100                 return;
2101         }
2102
2103         status = check_name(conn, fname);
2104         if (!NT_STATUS_IS_OK(status)) {
2105                 reply_nterror(req, status);
2106                 END_PROFILE(SMBctemp);
2107                 return;
2108         }
2109
2110         tmpfd = smb_mkstemp(fname);
2111         if (tmpfd == -1) {
2112                 reply_unixerror(req, ERRDOS, ERRnoaccess);
2113                 END_PROFILE(SMBctemp);
2114                 return;
2115         }
2116
2117         SMB_VFS_STAT(conn,fname,&sbuf);
2118
2119         /* We should fail if file does not exist. */
2120         status = open_file_ntcreate(conn, req, fname, &sbuf,
2121                                 FILE_GENERIC_READ | FILE_GENERIC_WRITE,
2122                                 FILE_SHARE_READ|FILE_SHARE_WRITE,
2123                                 FILE_OPEN,
2124                                 0,
2125                                 fattr,
2126                                 oplock_request,
2127                                 NULL, &fsp);
2128
2129         /* close fd from smb_mkstemp() */
2130         close(tmpfd);
2131
2132         if (!NT_STATUS_IS_OK(status)) {
2133                 if (open_was_deferred(req->mid)) {
2134                         /* We have re-scheduled this call. */
2135                         END_PROFILE(SMBctemp);
2136                         return;
2137                 }
2138                 reply_openerror(req, status);
2139                 END_PROFILE(SMBctemp);
2140                 return;
2141         }
2142
2143         reply_outbuf(req, 1, 0);
2144         SSVAL(req->outbuf,smb_vwv0,fsp->fnum);
2145
2146         /* the returned filename is relative to the directory */
2147         s = strrchr_m(fsp->fsp_name, '/');
2148         if (!s) {
2149                 s = fsp->fsp_name;
2150         } else {
2151                 s++;
2152         }
2153
2154 #if 0
2155         /* Tested vs W2K3 - this doesn't seem to be here - null terminated filename is the only
2156            thing in the byte section. JRA */
2157         SSVALS(p, 0, -1); /* what is this? not in spec */
2158 #endif
2159         if (message_push_string(&req->outbuf, s, STR_ASCII|STR_TERMINATE)
2160             == -1) {
2161                 reply_nterror(req, NT_STATUS_NO_MEMORY);
2162                 END_PROFILE(SMBctemp);
2163                 return;
2164         }
2165
2166         if (oplock_request && lp_fake_oplocks(SNUM(conn))) {
2167                 SCVAL(req->outbuf, smb_flg,
2168                       CVAL(req->outbuf,smb_flg)|CORE_OPLOCK_GRANTED);
2169         }
2170
2171         if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
2172                 SCVAL(req->outbuf, smb_flg,
2173                       CVAL(req->outbuf,smb_flg)|CORE_OPLOCK_GRANTED);
2174         }
2175
2176         DEBUG( 2, ( "reply_ctemp: created temp file %s\n", fsp->fsp_name ) );
2177         DEBUG( 3, ( "reply_ctemp %s fd=%d umode=0%o\n", fsp->fsp_name,
2178                     fsp->fh->fd, (unsigned int)sbuf.st_mode ) );
2179
2180         END_PROFILE(SMBctemp);
2181         return;
2182 }
2183
2184 /*******************************************************************
2185  Check if a user is allowed to rename a file.
2186 ********************************************************************/
2187
2188 static NTSTATUS can_rename(connection_struct *conn, files_struct *fsp,
2189                            uint16 dirtype, SMB_STRUCT_STAT *pst)
2190 {
2191         uint32 fmode;
2192
2193         if (!CAN_WRITE(conn)) {
2194                 return NT_STATUS_MEDIA_WRITE_PROTECTED;
2195         }
2196
2197         fmode = dos_mode(conn, fsp->fsp_name, pst);
2198         if ((fmode & ~dirtype) & (aHIDDEN | aSYSTEM)) {
2199                 return NT_STATUS_NO_SUCH_FILE;
2200         }
2201
2202         if (S_ISDIR(pst->st_mode)) {
2203                 return NT_STATUS_OK;
2204         }
2205
2206         if (fsp->access_mask & (DELETE_ACCESS|FILE_WRITE_ATTRIBUTES)) {
2207                 return NT_STATUS_OK;
2208         }
2209
2210         return NT_STATUS_ACCESS_DENIED;
2211 }
2212
2213 /*******************************************************************
2214  * unlink a file with all relevant access checks
2215  *******************************************************************/
2216
2217 static NTSTATUS do_unlink(connection_struct *conn,
2218                         struct smb_request *req,
2219                         const char *fname,
2220                         uint32 dirtype)
2221 {
2222         SMB_STRUCT_STAT sbuf;
2223         uint32 fattr;
2224         files_struct *fsp;
2225         uint32 dirtype_orig = dirtype;
2226         NTSTATUS status;
2227
2228         DEBUG(10,("do_unlink: %s, dirtype = %d\n", fname, dirtype ));
2229
2230         if (!CAN_WRITE(conn)) {
2231                 return NT_STATUS_MEDIA_WRITE_PROTECTED;
2232         }
2233
2234         if (SMB_VFS_LSTAT(conn,fname,&sbuf) != 0) {
2235                 return map_nt_error_from_unix(errno);
2236         }
2237
2238         fattr = dos_mode(conn,fname,&sbuf);
2239
2240         if (dirtype & FILE_ATTRIBUTE_NORMAL) {
2241                 dirtype = aDIR|aARCH|aRONLY;
2242         }
2243
2244         dirtype &= (aDIR|aARCH|aRONLY|aHIDDEN|aSYSTEM);
2245         if (!dirtype) {
2246                 return NT_STATUS_NO_SUCH_FILE;
2247         }
2248
2249         if (!dir_check_ftype(conn, fattr, dirtype)) {
2250                 if (fattr & aDIR) {
2251                         return NT_STATUS_FILE_IS_A_DIRECTORY;
2252                 }
2253                 return NT_STATUS_NO_SUCH_FILE;
2254         }
2255
2256         if (dirtype_orig & 0x8000) {
2257                 /* These will never be set for POSIX. */
2258                 return NT_STATUS_NO_SUCH_FILE;
2259         }
2260
2261 #if 0
2262         if ((fattr & dirtype) & FILE_ATTRIBUTE_DIRECTORY) {
2263                 return NT_STATUS_FILE_IS_A_DIRECTORY;
2264         }
2265
2266         if ((fattr & ~dirtype) & (FILE_ATTRIBUTE_HIDDEN|FILE_ATTRIBUTE_SYSTEM)) {
2267                 return NT_STATUS_NO_SUCH_FILE;
2268         }
2269
2270         if (dirtype & 0xFF00) {
2271                 /* These will never be set for POSIX. */
2272                 return NT_STATUS_NO_SUCH_FILE;
2273         }
2274
2275         dirtype &= 0xFF;
2276         if (!dirtype) {
2277                 return NT_STATUS_NO_SUCH_FILE;
2278         }
2279
2280         /* Can't delete a directory. */
2281         if (fattr & aDIR) {
2282                 return NT_STATUS_FILE_IS_A_DIRECTORY;
2283         }
2284 #endif
2285
2286 #if 0 /* JRATEST */
2287         else if (dirtype & aDIR) /* Asked for a directory and it isn't. */
2288                 return NT_STATUS_OBJECT_NAME_INVALID;
2289 #endif /* JRATEST */
2290
2291         /* Fix for bug #3035 from SATOH Fumiyasu <fumiyas@miraclelinux.com>
2292
2293           On a Windows share, a file with read-only dosmode can be opened with
2294           DELETE_ACCESS. But on a Samba share (delete readonly = no), it
2295           fails with NT_STATUS_CANNOT_DELETE error.
2296
2297           This semantic causes a problem that a user can not
2298           rename a file with read-only dosmode on a Samba share
2299           from a Windows command prompt (i.e. cmd.exe, but can rename
2300           from Windows Explorer).
2301         */
2302
2303         if (!lp_delete_readonly(SNUM(conn))) {
2304                 if (fattr & aRONLY) {
2305                         return NT_STATUS_CANNOT_DELETE;
2306                 }
2307         }
2308
2309         /* On open checks the open itself will check the share mode, so
2310            don't do it here as we'll get it wrong. */
2311
2312         status = create_file_unixpath
2313                 (conn,                  /* conn */
2314                  req,                   /* req */
2315                  fname,                 /* fname */
2316                  DELETE_ACCESS,         /* access_mask */
2317                  FILE_SHARE_NONE,       /* share_access */
2318                  FILE_OPEN,             /* create_disposition*/
2319                  FILE_NON_DIRECTORY_FILE, /* create_options */
2320                  FILE_ATTRIBUTE_NORMAL, /* file_attributes */
2321                  0,                     /* oplock_request */
2322                  0,                     /* allocation_size */
2323                  NULL,                  /* sd */
2324                  NULL,                  /* ea_list */
2325                  &fsp,                  /* result */
2326                  NULL,                  /* pinfo */
2327                  &sbuf);                /* psbuf */
2328
2329         if (!NT_STATUS_IS_OK(status)) {
2330                 DEBUG(10, ("create_file_unixpath failed: %s\n",
2331                            nt_errstr(status)));
2332                 return status;
2333         }
2334
2335         /* The set is across all open files on this dev/inode pair. */
2336         if (!set_delete_on_close(fsp, True, &conn->server_info->utok)) {
2337                 close_file(req, fsp, NORMAL_CLOSE);
2338                 return NT_STATUS_ACCESS_DENIED;
2339         }
2340
2341         return close_file(req, fsp, NORMAL_CLOSE);
2342 }
2343
2344 /****************************************************************************
2345  The guts of the unlink command, split out so it may be called by the NT SMB
2346  code.
2347 ****************************************************************************/
2348
2349 NTSTATUS unlink_internals(connection_struct *conn, struct smb_request *req,
2350                           uint32 dirtype, const char *name_in, bool has_wild)
2351 {
2352         const char *directory = NULL;
2353         char *mask = NULL;
2354         char *name = NULL;
2355         char *p = NULL;
2356         int count=0;
2357         NTSTATUS status = NT_STATUS_OK;
2358         SMB_STRUCT_STAT sbuf;
2359         TALLOC_CTX *ctx = talloc_tos();
2360
2361         status = unix_convert(ctx, conn, name_in, has_wild, &name, NULL, &sbuf);
2362         if (!NT_STATUS_IS_OK(status)) {
2363                 return status;
2364         }
2365
2366         p = strrchr_m(name,'/');
2367         if (!p) {
2368                 directory = talloc_strdup(ctx, ".");
2369                 if (!directory) {
2370                         return NT_STATUS_NO_MEMORY;
2371                 }
2372                 mask = name;
2373         } else {
2374                 *p = 0;
2375                 directory = name;
2376                 mask = p+1;
2377         }
2378
2379         /*
2380          * We should only check the mangled cache
2381          * here if unix_convert failed. This means
2382          * that the path in 'mask' doesn't exist
2383          * on the file system and so we need to look
2384          * for a possible mangle. This patch from
2385          * Tine Smukavec <valentin.smukavec@hermes.si>.
2386          */
2387
2388         if (!VALID_STAT(sbuf) && mangle_is_mangled(mask,conn->params)) {
2389                 char *new_mask = NULL;
2390                 mangle_lookup_name_from_8_3(ctx,
2391                                 mask,
2392                                 &new_mask,
2393                                 conn->params );
2394                 if (new_mask) {
2395                         mask = new_mask;
2396                 }
2397         }
2398
2399         if (!has_wild) {
2400                 directory = talloc_asprintf(ctx,
2401                                 "%s/%s",
2402                                 directory,
2403                                 mask);
2404                 if (!directory) {
2405                         return NT_STATUS_NO_MEMORY;
2406                 }
2407                 if (dirtype == 0) {
2408                         dirtype = FILE_ATTRIBUTE_NORMAL;
2409                 }
2410
2411                 status = check_name(conn, directory);
2412                 if (!NT_STATUS_IS_OK(status)) {
2413                         return status;
2414                 }
2415
2416                 status = do_unlink(conn, req, directory, dirtype);
2417                 if (!NT_STATUS_IS_OK(status)) {
2418                         return status;
2419                 }
2420
2421                 count++;
2422         } else {
2423                 struct smb_Dir *dir_hnd = NULL;
2424                 long offset = 0;
2425                 const char *dname;
2426
2427                 if ((dirtype & SAMBA_ATTRIBUTES_MASK) == aDIR) {
2428                         return NT_STATUS_OBJECT_NAME_INVALID;
2429                 }
2430
2431                 if (strequal(mask,"????????.???")) {
2432                         mask[0] = '*';
2433                         mask[1] = '\0';
2434                 }
2435
2436                 status = check_name(conn, directory);
2437                 if (!NT_STATUS_IS_OK(status)) {
2438                         return status;
2439                 }
2440
2441                 dir_hnd = OpenDir(talloc_tos(), conn, directory, mask,
2442                                   dirtype);
2443                 if (dir_hnd == NULL) {
2444                         return map_nt_error_from_unix(errno);
2445                 }
2446
2447                 /* XXXX the CIFS spec says that if bit0 of the flags2 field is set then
2448                    the pattern matches against the long name, otherwise the short name 
2449                    We don't implement this yet XXXX
2450                 */
2451
2452                 status = NT_STATUS_NO_SUCH_FILE;
2453
2454                 while ((dname = ReadDirName(dir_hnd, &offset))) {
2455                         SMB_STRUCT_STAT st;
2456                         char *fname = NULL;
2457
2458                         if (!is_visible_file(conn, directory, dname, &st, True)) {
2459                                 continue;
2460                         }
2461
2462                         /* Quick check for "." and ".." */
2463                         if (ISDOT(dname) || ISDOTDOT(dname)) {
2464                                 continue;
2465                         }
2466
2467                         if(!mask_match(dname, mask, conn->case_sensitive)) {
2468                                 continue;
2469                         }
2470
2471                         fname = talloc_asprintf(ctx, "%s/%s",
2472                                         directory,
2473                                         dname);
2474                         if (!fname) {
2475                                 return NT_STATUS_NO_MEMORY;
2476                         }
2477
2478                         status = check_name(conn, fname);
2479                         if (!NT_STATUS_IS_OK(status)) {
2480                                 TALLOC_FREE(dir_hnd);
2481                                 return status;
2482                         }
2483
2484                         status = do_unlink(conn, req, fname, dirtype);
2485                         if (!NT_STATUS_IS_OK(status)) {
2486                                 TALLOC_FREE(fname);
2487                                 continue;
2488                         }
2489
2490                         count++;
2491                         DEBUG(3,("unlink_internals: successful unlink [%s]\n",
2492                                  fname));
2493
2494                         TALLOC_FREE(fname);
2495                 }
2496                 TALLOC_FREE(dir_hnd);
2497         }
2498
2499         if (count == 0 && NT_STATUS_IS_OK(status) && errno != 0) {
2500                 status = map_nt_error_from_unix(errno);
2501         }
2502
2503         return status;
2504 }
2505
2506 /****************************************************************************
2507  Reply to a unlink
2508 ****************************************************************************/
2509
2510 void reply_unlink(struct smb_request *req)
2511 {
2512         connection_struct *conn = req->conn;
2513         char *name = NULL;
2514         uint32 dirtype;
2515         NTSTATUS status;
2516         bool path_contains_wcard = False;
2517         TALLOC_CTX *ctx = talloc_tos();
2518
2519         START_PROFILE(SMBunlink);
2520
2521         if (req->wct < 1) {
2522                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2523                 END_PROFILE(SMBunlink);
2524                 return;
2525         }
2526
2527         dirtype = SVAL(req->vwv+0, 0);
2528
2529         srvstr_get_path_req_wcard(ctx, req, &name, (const char *)req->buf + 1,
2530                                   STR_TERMINATE, &status,
2531                                   &path_contains_wcard);
2532         if (!NT_STATUS_IS_OK(status)) {
2533                 reply_nterror(req, status);
2534                 END_PROFILE(SMBunlink);
2535                 return;
2536         }
2537
2538         status = resolve_dfspath_wcard(ctx, conn,
2539                                        req->flags2 & FLAGS2_DFS_PATHNAMES,
2540                                        name,
2541                                        &name,
2542                                        &path_contains_wcard);
2543         if (!NT_STATUS_IS_OK(status)) {
2544                 if (NT_STATUS_EQUAL(status,NT_STATUS_PATH_NOT_COVERED)) {
2545                         reply_botherror(req, NT_STATUS_PATH_NOT_COVERED,
2546                                         ERRSRV, ERRbadpath);
2547                         END_PROFILE(SMBunlink);
2548                         return;
2549                 }
2550                 reply_nterror(req, status);
2551                 END_PROFILE(SMBunlink);
2552                 return;
2553         }
2554
2555         DEBUG(3,("reply_unlink : %s\n",name));
2556
2557         status = unlink_internals(conn, req, dirtype, name,
2558                                   path_contains_wcard);
2559         if (!NT_STATUS_IS_OK(status)) {
2560                 if (open_was_deferred(req->mid)) {
2561                         /* We have re-scheduled this call. */
2562                         END_PROFILE(SMBunlink);
2563                         return;
2564                 }
2565                 reply_nterror(req, status);
2566                 END_PROFILE(SMBunlink);
2567                 return;
2568         }
2569
2570         reply_outbuf(req, 0, 0);
2571         END_PROFILE(SMBunlink);
2572
2573         return;
2574 }
2575
2576 /****************************************************************************
2577  Fail for readbraw.
2578 ****************************************************************************/
2579
2580 static void fail_readraw(void)
2581 {
2582         const char *errstr = talloc_asprintf(talloc_tos(),
2583                         "FAIL ! reply_readbraw: socket write fail (%s)",
2584                         strerror(errno));
2585         if (!errstr) {
2586                 errstr = "";
2587         }
2588         exit_server_cleanly(errstr);
2589 }
2590
2591 /****************************************************************************
2592  Fake (read/write) sendfile. Returns -1 on read or write fail.
2593 ****************************************************************************/
2594
2595 static ssize_t fake_sendfile(files_struct *fsp, SMB_OFF_T startpos,
2596                              size_t nread)
2597 {
2598         size_t bufsize;
2599         size_t tosend = nread;
2600         char *buf;
2601
2602         if (nread == 0) {
2603                 return 0;
2604         }
2605
2606         bufsize = MIN(nread, 65536);
2607
2608         if (!(buf = SMB_MALLOC_ARRAY(char, bufsize))) {
2609                 return -1;
2610         }
2611
2612         while (tosend > 0) {
2613                 ssize_t ret;
2614                 size_t cur_read;
2615
2616                 if (tosend > bufsize) {
2617                         cur_read = bufsize;
2618                 } else {
2619                         cur_read = tosend;
2620                 }
2621                 ret = read_file(fsp,buf,startpos,cur_read);
2622                 if (ret == -1) {
2623                         SAFE_FREE(buf);
2624                         return -1;
2625                 }
2626
2627                 /* If we had a short read, fill with zeros. */
2628                 if (ret < cur_read) {
2629                         memset(buf, '\0', cur_read - ret);
2630                 }
2631
2632                 if (write_data(smbd_server_fd(),buf,cur_read) != cur_read) {
2633                         SAFE_FREE(buf);
2634                         return -1;
2635                 }
2636                 tosend -= cur_read;
2637                 startpos += cur_read;
2638         }
2639
2640         SAFE_FREE(buf);
2641         return (ssize_t)nread;
2642 }
2643
2644 /****************************************************************************
2645  Return a readbraw error (4 bytes of zero).
2646 ****************************************************************************/
2647
2648 static void reply_readbraw_error(void)
2649 {
2650         char header[4];
2651         SIVAL(header,0,0);
2652         if (write_data(smbd_server_fd(),header,4) != 4) {
2653                 fail_readraw();
2654         }
2655 }
2656
2657 /****************************************************************************
2658  Use sendfile in readbraw.
2659 ****************************************************************************/
2660
2661 void send_file_readbraw(connection_struct *conn,
2662                         files_struct *fsp,
2663                         SMB_OFF_T startpos,
2664                         size_t nread,
2665                         ssize_t mincount)
2666 {
2667         char *outbuf = NULL;
2668         ssize_t ret=0;
2669
2670 #if defined(WITH_SENDFILE)
2671         /*
2672          * We can only use sendfile on a non-chained packet 
2673          * but we can use on a non-oplocked file. tridge proved this
2674          * on a train in Germany :-). JRA.
2675          * reply_readbraw has already checked the length.
2676          */
2677
2678         if ( (chain_size == 0) && (nread > 0) && (fsp->base_fsp == NULL) &&
2679             (fsp->wcp == NULL) && lp_use_sendfile(SNUM(conn)) ) {
2680                 char header[4];
2681                 DATA_BLOB header_blob;
2682
2683                 _smb_setlen(header,nread);
2684                 header_blob = data_blob_const(header, 4);
2685
2686                 if (SMB_VFS_SENDFILE(smbd_server_fd(), fsp,
2687                                 &header_blob, startpos, nread) == -1) {
2688                         /* Returning ENOSYS means no data at all was sent.
2689                          * Do this as a normal read. */
2690                         if (errno == ENOSYS) {
2691                                 goto normal_readbraw;
2692                         }
2693
2694                         /*
2695                          * Special hack for broken Linux with no working sendfile. If we
2696                          * return EINTR we sent the header but not the rest of the data.
2697                          * Fake this up by doing read/write calls.
2698                          */
2699                         if (errno == EINTR) {
2700                                 /* Ensure we don't do this again. */
2701                                 set_use_sendfile(SNUM(conn), False);
2702                                 DEBUG(0,("send_file_readbraw: sendfile not available. Faking..\n"));
2703
2704                                 if (fake_sendfile(fsp, startpos, nread) == -1) {
2705                                         DEBUG(0,("send_file_readbraw: fake_sendfile failed for file %s (%s).\n",
2706                                                 fsp->fsp_name, strerror(errno) ));
2707                                         exit_server_cleanly("send_file_readbraw fake_sendfile failed");
2708                                 }
2709                                 return;
2710                         }
2711
2712                         DEBUG(0,("send_file_readbraw: sendfile failed for file %s (%s). Terminating\n",
2713                                 fsp->fsp_name, strerror(errno) ));
2714                         exit_server_cleanly("send_file_readbraw sendfile failed");
2715                 }
2716
2717                 return;
2718         }
2719 #endif
2720
2721 normal_readbraw:
2722
2723         outbuf = TALLOC_ARRAY(NULL, char, nread+4);
2724         if (!outbuf) {
2725                 DEBUG(0,("send_file_readbraw: TALLOC_ARRAY failed for size %u.\n",
2726                         (unsigned)(nread+4)));
2727                 reply_readbraw_error();
2728                 return;
2729         }
2730
2731         if (nread > 0) {
2732                 ret = read_file(fsp,outbuf+4,startpos,nread);
2733 #if 0 /* mincount appears to be ignored in a W2K server. JRA. */
2734                 if (ret < mincount)
2735                         ret = 0;
2736 #else
2737                 if (ret < nread)
2738                         ret = 0;
2739 #endif
2740         }
2741
2742         _smb_setlen(outbuf,ret);
2743         if (write_data(smbd_server_fd(),outbuf,4+ret) != 4+ret)
2744                 fail_readraw();
2745
2746         TALLOC_FREE(outbuf);
2747 }
2748
2749 /****************************************************************************
2750  Reply to a readbraw (core+ protocol).
2751 ****************************************************************************/
2752
2753 void reply_readbraw(struct smb_request *req)
2754 {
2755         connection_struct *conn = req->conn;
2756         ssize_t maxcount,mincount;
2757         size_t nread = 0;
2758         SMB_OFF_T startpos;
2759         files_struct *fsp;
2760         SMB_STRUCT_STAT st;
2761         SMB_OFF_T size = 0;
2762
2763         START_PROFILE(SMBreadbraw);
2764
2765         if (srv_is_signing_active() || is_encrypted_packet(req->inbuf)) {
2766                 exit_server_cleanly("reply_readbraw: SMB signing/sealing is active - "
2767                         "raw reads/writes are disallowed.");
2768         }
2769
2770         if (req->wct < 8) {
2771                 reply_readbraw_error();
2772                 END_PROFILE(SMBreadbraw);
2773                 return;
2774         }
2775
2776         /*
2777          * Special check if an oplock break has been issued
2778          * and the readraw request croses on the wire, we must
2779          * return a zero length response here.
2780          */
2781
2782         fsp = file_fsp(req, SVAL(req->vwv+0, 0));
2783
2784         /*
2785          * We have to do a check_fsp by hand here, as
2786          * we must always return 4 zero bytes on error,
2787          * not a NTSTATUS.
2788          */
2789
2790         if (!fsp || !conn || conn != fsp->conn ||
2791                         req->vuid != fsp->vuid ||
2792                         fsp->is_directory || fsp->fh->fd == -1) {
2793                 /*
2794                  * fsp could be NULL here so use the value from the packet. JRA.
2795                  */
2796                 DEBUG(3,("reply_readbraw: fnum %d not valid "
2797                         "- cache prime?\n",
2798                         (int)SVAL(req->vwv+0, 0)));
2799                 reply_readbraw_error();
2800                 END_PROFILE(SMBreadbraw);
2801                 return;
2802         }
2803
2804         /* Do a "by hand" version of CHECK_READ. */
2805         if (!(fsp->can_read ||
2806                         ((req->flags2 & FLAGS2_READ_PERMIT_EXECUTE) &&
2807                                 (fsp->access_mask & FILE_EXECUTE)))) {
2808                 DEBUG(3,("reply_readbraw: fnum %d not readable.\n",
2809                                 (int)SVAL(req->vwv+0, 0)));
2810                 reply_readbraw_error();
2811                 END_PROFILE(SMBreadbraw);
2812                 return;
2813         }
2814
2815         flush_write_cache(fsp, READRAW_FLUSH);
2816
2817         startpos = IVAL_TO_SMB_OFF_T(req->vwv+1, 0);
2818         if(req->wct == 10) {
2819                 /*
2820                  * This is a large offset (64 bit) read.
2821                  */
2822 #ifdef LARGE_SMB_OFF_T
2823
2824                 startpos |= (((SMB_OFF_T)IVAL(req->vwv+8, 0)) << 32);
2825
2826 #else /* !LARGE_SMB_OFF_T */
2827
2828                 /*
2829                  * Ensure we haven't been sent a >32 bit offset.
2830                  */
2831
2832                 if(IVAL(req->vwv+8, 0) != 0) {
2833                         DEBUG(0,("reply_readbraw: large offset "
2834                                 "(%x << 32) used and we don't support "
2835                                 "64 bit offsets.\n",
2836                         (unsigned int)IVAL(req->vwv+8, 0) ));
2837                         reply_readbraw_error();
2838                         END_PROFILE(SMBreadbraw);
2839                         return;
2840                 }
2841
2842 #endif /* LARGE_SMB_OFF_T */
2843
2844                 if(startpos < 0) {
2845                         DEBUG(0,("reply_readbraw: negative 64 bit "
2846                                 "readraw offset (%.0f) !\n",
2847                                 (double)startpos ));
2848                         reply_readbraw_error();
2849                         END_PROFILE(SMBreadbraw);
2850                         return;
2851                 }      
2852         }
2853
2854         maxcount = (SVAL(req->vwv+3, 0) & 0xFFFF);
2855         mincount = (SVAL(req->vwv+4, 0) & 0xFFFF);
2856
2857         /* ensure we don't overrun the packet size */
2858         maxcount = MIN(65535,maxcount);
2859
2860         if (is_locked(fsp,(uint32)req->smbpid,
2861                         (uint64_t)maxcount,
2862                         (uint64_t)startpos,
2863                         READ_LOCK)) {
2864                 reply_readbraw_error();
2865                 END_PROFILE(SMBreadbraw);
2866                 return;
2867         }
2868
2869         if (SMB_VFS_FSTAT(fsp, &st) == 0) {
2870                 size = st.st_size;
2871         }
2872
2873         if (startpos >= size) {
2874                 nread = 0;
2875         } else {
2876                 nread = MIN(maxcount,(size - startpos));
2877         }
2878
2879 #if 0 /* mincount appears to be ignored in a W2K server. JRA. */
2880         if (nread < mincount)
2881                 nread = 0;
2882 #endif
2883
2884         DEBUG( 3, ( "reply_readbraw: fnum=%d start=%.0f max=%lu "
2885                 "min=%lu nread=%lu\n",
2886                 fsp->fnum, (double)startpos,
2887                 (unsigned long)maxcount,
2888                 (unsigned long)mincount,
2889                 (unsigned long)nread ) );
2890
2891         send_file_readbraw(conn, fsp, startpos, nread, mincount);
2892
2893         DEBUG(5,("reply_readbraw finished\n"));
2894         END_PROFILE(SMBreadbraw);
2895 }
2896
2897 #undef DBGC_CLASS
2898 #define DBGC_CLASS DBGC_LOCKING
2899
2900 /****************************************************************************
2901  Reply to a lockread (core+ protocol).
2902 ****************************************************************************/
2903
2904 void reply_lockread(struct smb_request *req)
2905 {
2906         connection_struct *conn = req->conn;
2907         ssize_t nread = -1;
2908         char *data;
2909         SMB_OFF_T startpos;
2910         size_t numtoread;
2911         NTSTATUS status;
2912         files_struct *fsp;
2913         struct byte_range_lock *br_lck = NULL;
2914         char *p = NULL;
2915
2916         START_PROFILE(SMBlockread);
2917
2918         if (req->wct < 5) {
2919                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
2920                 END_PROFILE(SMBlockread);
2921                 return;
2922         }
2923
2924         fsp = file_fsp(req, SVAL(req->vwv+0, 0));
2925
2926         if (!check_fsp(conn, req, fsp)) {
2927                 END_PROFILE(SMBlockread);
2928                 return;
2929         }
2930
2931         if (!CHECK_READ(fsp,req)) {
2932                 reply_doserror(req, ERRDOS, ERRbadaccess);
2933                 END_PROFILE(SMBlockread);
2934                 return;
2935         }
2936
2937         release_level_2_oplocks_on_change(fsp);
2938
2939         numtoread = SVAL(req->vwv+1, 0);
2940         startpos = IVAL_TO_SMB_OFF_T(req->vwv+2, 0);
2941
2942         numtoread = MIN(BUFFER_SIZE - (smb_size + 3*2 + 3), numtoread);
2943
2944         reply_outbuf(req, 5, numtoread + 3);
2945
2946         data = smb_buf(req->outbuf) + 3;
2947
2948         /*
2949          * NB. Discovered by Menny Hamburger at Mainsoft. This is a core+
2950          * protocol request that predates the read/write lock concept. 
2951          * Thus instead of asking for a read lock here we need to ask
2952          * for a write lock. JRA.
2953          * Note that the requested lock size is unaffected by max_recv.
2954          */
2955
2956         br_lck = do_lock(smbd_messaging_context(),
2957                         fsp,
2958                         req->smbpid,
2959                         (uint64_t)numtoread,
2960                         (uint64_t)startpos,
2961                         WRITE_LOCK,
2962                         WINDOWS_LOCK,
2963                         False, /* Non-blocking lock. */
2964                         &status,
2965                         NULL);
2966         TALLOC_FREE(br_lck);
2967
2968         if (NT_STATUS_V(status)) {
2969                 reply_nterror(req, status);
2970                 END_PROFILE(SMBlockread);
2971                 return;
2972         }
2973
2974         /*
2975          * However the requested READ size IS affected by max_recv. Insanity.... JRA.
2976          */
2977
2978         if (numtoread > max_recv) {
2979                 DEBUG(0,("reply_lockread: requested read size (%u) is greater than maximum allowed (%u). \
2980 Returning short read of maximum allowed for compatibility with Windows 2000.\n",
2981                         (unsigned int)numtoread, (unsigned int)max_recv ));
2982                 numtoread = MIN(numtoread,max_recv);
2983         }
2984         nread = read_file(fsp,data,startpos,numtoread);
2985
2986         if (nread < 0) {
2987                 reply_unixerror(req, ERRDOS, ERRnoaccess);
2988                 END_PROFILE(SMBlockread);
2989                 return;
2990         }
2991
2992         srv_set_message((char *)req->outbuf, 5, nread+3, False);
2993
2994         SSVAL(req->outbuf,smb_vwv0,nread);
2995         SSVAL(req->outbuf,smb_vwv5,nread+3);
2996         p = smb_buf(req->outbuf);
2997         SCVAL(p,0,0); /* pad byte. */
2998         SSVAL(p,1,nread);
2999
3000         DEBUG(3,("lockread fnum=%d num=%d nread=%d\n",
3001                  fsp->fnum, (int)numtoread, (int)nread));
3002
3003         END_PROFILE(SMBlockread);
3004         return;
3005 }
3006
3007 #undef DBGC_CLASS
3008 #define DBGC_CLASS DBGC_ALL
3009
3010 /****************************************************************************
3011  Reply to a read.
3012 ****************************************************************************/
3013
3014 void reply_read(struct smb_request *req)
3015 {
3016         connection_struct *conn = req->conn;
3017         size_t numtoread;
3018         ssize_t nread = 0;
3019         char *data;
3020         SMB_OFF_T startpos;
3021         int outsize = 0;
3022         files_struct *fsp;
3023
3024         START_PROFILE(SMBread);
3025
3026         if (req->wct < 3) {
3027                 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
3028                 END_PROFILE(SMBread);
3029                 return;
3030         }
3031
3032         fsp = file_fsp(req, SVAL(req->vwv+0, 0));
3033
3034         if (!check_fsp(conn, req, fsp)) {
3035                 END_PROFILE(SMBread);
3036                 return;
3037         }
3038
3039         if (!CHECK_READ(fsp,req)) {
3040                 reply_doserror(req, ERRDOS, ERRbadaccess);
3041                 END_PROFILE(SMBread);
3042                 return;
3043         }
3044
3045         numtoread = SVAL(req->vwv+1, 0);
3046         startpos = IVAL_TO_SMB_OFF_T(req->vwv+2, 0);
3047
3048         numtoread = MIN(BUFFER_SIZE-outsize,numtoread);
3049
3050         /*
3051          * The requested read size cannot be greater than max_recv. JRA.
3052          */
3053         if (numtoread > max_recv) {
3054                 DEBUG(0,("reply_read: requested read size (%u) is greater than maximum allowed (%u). \
3055 Returning short read of maximum allowed for compatibility with Windows 2000.\n",
3056                         (unsigned int)numtoread, (unsigned int)max_recv ));
3057                 numtoread = MIN(numtoread,max_recv);
3058         }
3059
3060         reply_outbuf(req, 5, numtoread+3);
3061
3062         data = smb_buf(req->outbuf) + 3;
3063
3064         if (is_locked(fsp, (uint32)req->smbpid, (uint64_t)numtoread,
3065                       (uint64_t)startpos, READ_LOCK)) {
3066                 reply_doserror(req, ERRDOS,ERRlock);
3067                 END_PROFILE(SMBread);
3068                 return;
3069         }
3070
3071         if (numtoread > 0)
3072                 nread = read_file(fsp,data,startpos,numtoread);
3073
3074         if (nread < 0) {
3075                 reply_unixerror(req, ERRDOS,ERRnoaccess);
3076                 END_PROFILE(SMBread);
3077                 return;
3078         }
3079
3080         srv_set_message((char *)req->outbuf, 5, nread+3, False);
3081
3082         SSVAL(req->outbuf,smb_vwv0,nread);
3083         SSVAL(req->outbuf,smb_vwv5,nread+3);
3084         SCVAL(smb_buf(req->outbuf),0,1);
3085         SSVAL(smb_buf(req->outbuf),1,nread);
3086
3087         DEBUG( 3, ( "read fnum=%d num=%d nread=%d\n",
3088                 fsp->fnum, (int)numtoread, (int)nread ) );
3089
3090         END_PROFILE(SMBread);
3091         return;
3092 }
3093
3094 /****************************************************************************
3095  Setup readX header.
3096 ****************************************************************************/
3097
3098 static int setup_readX_header(char *outbuf, size_t smb_maxcnt)
3099 {
3100         int outsize;
3101         char *data;
3102
3103         outsize = srv_set_message(outbuf,12,smb_maxcnt,False);
3104         data = smb_buf(outbuf);
3105
3106         memset(outbuf+smb_vwv0,'\0',24); /* valgrind init. */
3107
3108         SCVAL(outbuf,smb_vwv0,0xFF);
3109         SSVAL(outbuf,smb_vwv2,0xFFFF); /* Remaining - must be -1. */
3110         SSVAL(outbuf,smb_vwv5,smb_maxcnt);
3111         SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf));
3112         SSVAL(outbuf,smb_vwv7,(smb_maxcnt >> 16));
3113         SSVAL(smb_buf(outbuf),-2,smb_maxcnt);
3114         /* Reset the outgoing length, set_message truncates at 0x1FFFF. */
3115         _smb_setlen_large(outbuf,(smb_size + 12*2 + smb_maxcnt - 4));
3116         return outsize;
3117 }
3118
3119 /****************************************************************************
3120  Reply to a read and X - possibly using sendfile.
3121 ****************************************************************************/
3122
3123 static void send_file_readX(connection_struct *conn, struct smb_request *req,
3124                             files_struct *fsp, SMB_OFF_T startpos,
3125                             size_t smb_maxcnt)
3126 {
3127         SMB_STRUCT_STAT sbuf;
3128         ssize_t nread = -1;
3129
3130         if(SMB_VFS_FSTAT(fsp, &sbuf) == -1) {
3131                 reply_unixerror(req, ERRDOS, ERRnoaccess);
3132                 return;
3133         }
3134
3135         if (startpos > sbuf.st_size) {
3136                 smb_maxcnt = 0;
3137         } else if (smb_maxcnt > (sbuf.st_size - startpos)) {
3138                 smb_maxcnt = (sbuf.st_size - startpos);
3139         }
3140
3141         if (smb_maxcnt == 0) {
3142                 goto normal_read;
3143         }
3144
3145 #if defined(WITH_SENDFILE)
3146         /*
3147          * We can only use sendfile on a non-chained packet
3148          * but we can use on a non-oplocked file. tridge proved this
3149          * on a train in Germany :-). JRA.
3150          */
3151
3152         if ((chain_size == 0) && (CVAL(req->vwv+0, 0) == 0xFF) &&
3153             !is_encrypted_packet(req->inbuf) && (fsp->base_fsp == NULL) &&
3154             lp_use_sendfile(SNUM(conn)) && (fsp->wcp == NULL) ) {
3155                 uint8 headerbuf[smb_size + 12 * 2];
3156                 DATA_BLOB header;
3157
3158                 /*
3159                  * Set up the packet header before send. We
3160                  * assume here the sendfile will work (get the
3161                  * correct amount of data).
3162                  */
3163
3164                 header = data_blob_const(headerbuf, sizeof(headerbuf));
3165
3166                 construct_reply_common_req(req, (char *)headerbuf);
3167                 setup_readX_header((char *)headerbuf, smb_maxcnt);
3168
3169                 if ((nread = SMB_VFS_SENDFILE(smbd_server_fd(), fsp, &header, startpos, smb_maxcnt)) == -1) {
3170                         /* Returning ENOSYS or EINVAL means no data at all was sent. 
3171                            Do this as a normal read. */
3172                         if (errno == ENOSYS || errno == EINVAL) {
3173                                 goto normal_read;
3174                         }
3175
3176                         /*
3177                          * Special hack for broken Linux with no working sendfile. If we
3178                          * return EINTR we sent the header but not the rest of the data.
3179                          * Fake this up by doing read/write calls.
3180                          */
3181
3182                         if (errno == EINTR) {
3183                                 /* Ensure we don't do this again. */
3184                                 set_use_sendfile(SNUM(conn), False);
3185                                 DEBUG(0,("send_file_readX: sendfile not available. Faking..\n"));
3186                                 nread = fake_sendfile(fsp, startpos,
3187                                                       smb_maxcnt);
3188                                 if (nread == -1) {
3189                                         DEBUG(0,("send_file_readX: fake_sendfile failed for file %s (%s).\n",
3190                                                 fsp->fsp_name, strerror(errno) ));
3191                                         exit_server_cleanly("send_file_readX: fake_sendfile failed");
3192                                 }
3193                                 DEBUG( 3, ( "send_file_readX: fake_sendfile fnum=%d max=%d nread=%d\n",
3194                                         fsp->fnum, (int)smb_maxcnt, (int)nread ) );
3195                                 /* No outbuf here means successful sendfile. */
3196