2 Unix SMB/CIFS implementation.
3 service (connection) opening and closing
4 Copyright (C) Andrew Tridgell 1992-1998
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "smbd/globals.h"
23 extern userdom_struct current_user_info
;
25 static bool canonicalize_connect_path(connection_struct
*conn
)
27 #ifdef REALPATH_TAKES_NULL
29 char *resolved_name
= SMB_VFS_REALPATH(conn
,conn
->connectpath
,NULL
);
33 ret
= set_conn_connectpath(conn
,resolved_name
);
34 SAFE_FREE(resolved_name
);
37 char resolved_name_buf
[PATH_MAX
+1];
38 char *resolved_name
= SMB_VFS_REALPATH(conn
,conn
->connectpath
,resolved_name_buf
);
42 return set_conn_connectpath(conn
,resolved_name
);
43 #endif /* REALPATH_TAKES_NULL */
46 /****************************************************************************
47 Ensure when setting connectpath it is a canonicalized (no ./ // or ../)
48 absolute path stating in / and not ending in /.
49 Observent people will notice a similarity between this and check_path_syntax :-).
50 ****************************************************************************/
52 bool set_conn_connectpath(connection_struct
*conn
, const char *connectpath
)
56 const char *s
= connectpath
;
57 bool start_of_name_component
= true;
59 if (connectpath
== NULL
|| connectpath
[0] == '\0') {
63 destname
= SMB_STRDUP(connectpath
);
69 *d
++ = '/'; /* Always start with root. */
73 /* Eat multiple '/' */
77 if ((d
> destname
+ 1) && (*s
!= '\0')) {
80 start_of_name_component
= True
;
84 if (start_of_name_component
) {
85 if ((s
[0] == '.') && (s
[1] == '.') && (s
[2] == '/' || s
[2] == '\0')) {
86 /* Uh oh - "/../" or "/..\0" ! */
88 /* Go past the ../ or .. */
92 s
+= 2; /* Go past the .. */
95 /* If we just added a '/' - delete it */
96 if ((d
> destname
) && (*(d
-1) == '/')) {
101 /* Are we at the start ? Can't go back further if so. */
103 *d
++ = '/'; /* Can't delete root */
106 /* Go back one level... */
107 /* Decrement d first as d points to the *next* char to write into. */
108 for (d
--; d
> destname
; d
--) {
113 /* We're still at the start of a name component, just the previous one. */
115 } else if ((s
[0] == '.') && ((s
[1] == '\0') || s
[1] == '/')) {
116 /* Component of pathname can't be "." only - skip the '.' . */
130 /* Get the size of the next MB character. */
131 next_codepoint(s
,&siz
);
152 start_of_name_component
= false;
156 /* And must not end in '/' */
157 if (d
> destname
+ 1 && (*(d
-1) == '/')) {
161 DEBUG(10,("set_conn_connectpath: service %s, connectpath = %s\n",
162 lp_servicename(SNUM(conn
)), destname
));
164 string_set(&conn
->connectpath
, destname
);
169 /****************************************************************************
170 Load parameters specific to a connection/service.
171 ****************************************************************************/
173 bool set_current_service(connection_struct
*conn
, uint16 flags
, bool do_chdir
)
182 conn
->lastused_count
++;
187 vfs_ChDir(conn
,conn
->connectpath
) != 0 &&
188 vfs_ChDir(conn
,conn
->origpath
) != 0) {
189 DEBUG(((errno
!=EACCES
)?0:3),("chdir (%s) failed, reason: %s\n",
190 conn
->connectpath
, strerror(errno
)));
194 if ((conn
== last_conn
) && (last_flags
== flags
)) {
201 /* Obey the client case sensitivity requests - only for clients that support it. */
202 switch (lp_casesensitive(snum
)) {
205 /* We need this uglyness due to DOS/Win9x clients that lie about case insensitivity. */
206 enum remote_arch_types ra_type
= get_remote_arch();
207 if ((ra_type
!= RA_SAMBA
) && (ra_type
!= RA_CIFSFS
)) {
208 /* Client can't support per-packet case sensitive pathnames. */
209 conn
->case_sensitive
= False
;
211 conn
->case_sensitive
= !(flags
& FLAG_CASELESS_PATHNAMES
);
216 conn
->case_sensitive
= True
;
219 conn
->case_sensitive
= False
;
225 static int load_registry_service(const char *servicename
)
227 if (!lp_registry_shares()) {
231 if ((servicename
== NULL
) || (*servicename
== '\0')) {
235 if (strequal(servicename
, GLOBAL_NAME
)) {
239 if (!process_registry_service(servicename
)) {
243 return lp_servicenumber(servicename
);
246 void load_registry_shares(void)
248 DEBUG(8, ("load_registry_shares()\n"));
249 if (!lp_registry_shares()) {
253 process_registry_shares();
258 /****************************************************************************
259 Add a home service. Returns the new service number or -1 if fail.
260 ****************************************************************************/
262 int add_home_service(const char *service
, const char *username
, const char *homedir
)
266 if (!service
|| !homedir
|| homedir
[0] == '\0')
269 if ((iHomeService
= lp_servicenumber(HOMES_NAME
)) < 0) {
270 if ((iHomeService
= load_registry_service(HOMES_NAME
)) < 0) {
276 * If this is a winbindd provided username, remove
277 * the domain component before adding the service.
278 * Log a warning if the "path=" parameter does not
279 * include any macros.
283 const char *p
= strchr(service
,*lp_winbind_separator());
285 /* We only want the 'user' part of the string */
291 if (!lp_add_home(service
, iHomeService
, username
, homedir
)) {
295 return lp_servicenumber(service
);
300 * Find a service entry.
302 * @param service is modified (to canonical form??)
305 int find_service(fstring service
)
308 struct smbd_server_connection
*sconn
= smbd_server_conn
;
310 all_string_sub(service
,"\\","/",0);
312 iService
= lp_servicenumber(service
);
314 /* now handle the special case of a home directory */
316 char *phome_dir
= get_user_home_dir(talloc_tos(), service
);
320 * Try mapping the servicename, it may
321 * be a Windows to unix mapped user name.
323 if(map_username(sconn
, service
))
324 phome_dir
= get_user_home_dir(
325 talloc_tos(), service
);
328 DEBUG(3,("checking for home directory %s gave %s\n",service
,
329 phome_dir
?phome_dir
:"(NULL)"));
331 iService
= add_home_service(service
,service
/* 'username' */, phome_dir
);
334 /* If we still don't have a service, attempt to add it as a printer. */
338 if ((iPrinterService
= lp_servicenumber(PRINTERS_NAME
)) < 0) {
339 iPrinterService
= load_registry_service(PRINTERS_NAME
);
341 if (iPrinterService
) {
342 DEBUG(3,("checking whether %s is a valid printer name...\n", service
));
343 if (pcap_printername_ok(service
)) {
344 DEBUG(3,("%s is a valid printer name\n", service
));
345 DEBUG(3,("adding %s as a printer service\n", service
));
346 lp_add_printer(service
, iPrinterService
);
347 iService
= lp_servicenumber(service
);
349 DEBUG(0,("failed to add %s as a printer service!\n", service
));
352 DEBUG(3,("%s is not a valid printer name\n", service
));
357 /* Check for default vfs service? Unsure whether to implement this */
362 iService
= load_registry_service(service
);
365 /* Is it a usershare service ? */
366 if (iService
< 0 && *lp_usershare_path()) {
367 /* Ensure the name is canonicalized. */
369 iService
= load_usershare_service(service
);
372 /* just possibly it's a default service? */
374 char *pdefservice
= lp_defaultservice();
375 if (pdefservice
&& *pdefservice
&& !strequal(pdefservice
,service
) && !strstr_m(service
,"..")) {
377 * We need to do a local copy here as lp_defaultservice()
378 * returns one of the rotating lp_string buffers that
379 * could get overwritten by the recursive find_service() call
380 * below. Fix from Josef Hinteregger <joehtg@joehtg.co.at>.
382 char *defservice
= SMB_STRDUP(pdefservice
);
388 /* Disallow anything except explicit share names. */
389 if (strequal(defservice
,HOMES_NAME
) ||
390 strequal(defservice
, PRINTERS_NAME
) ||
391 strequal(defservice
, "IPC$")) {
392 SAFE_FREE(defservice
);
396 iService
= find_service(defservice
);
398 all_string_sub(service
, "_","/",0);
399 iService
= lp_add_service(service
, iService
);
401 SAFE_FREE(defservice
);
406 if (!VALID_SNUM(iService
)) {
407 DEBUG(0,("Invalid snum %d for %s\n",iService
, service
));
415 DEBUG(3,("find_service() failed to find service %s\n", service
));
421 /****************************************************************************
422 do some basic sainity checks on the share.
423 This function modifies dev, ecode.
424 ****************************************************************************/
426 static NTSTATUS
share_sanity_checks(int snum
, fstring dev
)
429 if (!lp_snum_ok(snum
) ||
430 !check_access(smbd_server_fd(),
431 lp_hostsallow(snum
), lp_hostsdeny(snum
))) {
432 return NT_STATUS_ACCESS_DENIED
;
435 if (dev
[0] == '?' || !dev
[0]) {
436 if (lp_print_ok(snum
)) {
437 fstrcpy(dev
,"LPT1:");
438 } else if (strequal(lp_fstype(snum
), "IPC")) {
447 if (lp_print_ok(snum
)) {
448 if (!strequal(dev
, "LPT1:")) {
449 return NT_STATUS_BAD_DEVICE_TYPE
;
451 } else if (strequal(lp_fstype(snum
), "IPC")) {
452 if (!strequal(dev
, "IPC")) {
453 return NT_STATUS_BAD_DEVICE_TYPE
;
455 } else if (!strequal(dev
, "A:")) {
456 return NT_STATUS_BAD_DEVICE_TYPE
;
459 /* Behave as a printer if we are supposed to */
460 if (lp_print_ok(snum
) && (strcmp(dev
, "A:") == 0)) {
461 fstrcpy(dev
, "LPT1:");
468 * Go through lookup_name etc to find the force'd group.
470 * Create a new token from src_token, replacing the primary group sid with the
474 static NTSTATUS
find_forced_group(bool force_user
,
475 int snum
, const char *username
,
479 NTSTATUS result
= NT_STATUS_NO_SUCH_GROUP
;
480 TALLOC_CTX
*frame
= talloc_stackframe();
482 enum lsa_SidType type
;
484 bool user_must_be_member
= False
;
487 groupname
= talloc_strdup(talloc_tos(), lp_force_group(snum
));
488 if (groupname
== NULL
) {
489 DEBUG(1, ("talloc_strdup failed\n"));
490 result
= NT_STATUS_NO_MEMORY
;
494 if (groupname
[0] == '+') {
495 user_must_be_member
= True
;
499 groupname
= talloc_string_sub(talloc_tos(), groupname
,
500 "%S", lp_servicename(snum
));
501 if (groupname
== NULL
) {
502 DEBUG(1, ("talloc_string_sub failed\n"));
503 result
= NT_STATUS_NO_MEMORY
;
507 if (!lookup_name_smbconf(talloc_tos(), groupname
,
508 LOOKUP_NAME_ALL
|LOOKUP_NAME_GROUP
,
509 NULL
, NULL
, &group_sid
, &type
)) {
510 DEBUG(10, ("lookup_name_smbconf(%s) failed\n",
515 if ((type
!= SID_NAME_DOM_GRP
) && (type
!= SID_NAME_ALIAS
) &&
516 (type
!= SID_NAME_WKN_GRP
)) {
517 DEBUG(10, ("%s is a %s, not a group\n", groupname
,
518 sid_type_lookup(type
)));
522 if (!sid_to_gid(&group_sid
, &gid
)) {
523 DEBUG(10, ("sid_to_gid(%s) for %s failed\n",
524 sid_string_dbg(&group_sid
), groupname
));
529 * If the user has been forced and the forced group starts with a '+',
530 * then we only set the group to be the forced group if the forced
531 * user is a member of that group. Otherwise, the meaning of the '+'
535 if (force_user
&& user_must_be_member
) {
536 if (user_in_group_sid(username
, &group_sid
)) {
537 sid_copy(pgroup_sid
, &group_sid
);
539 DEBUG(3,("Forced group %s for member %s\n",
540 groupname
, username
));
542 DEBUG(0,("find_forced_group: forced user %s is not a member "
543 "of forced group %s. Disallowing access.\n",
544 username
, groupname
));
545 result
= NT_STATUS_MEMBER_NOT_IN_GROUP
;
549 sid_copy(pgroup_sid
, &group_sid
);
551 DEBUG(3,("Forced group %s\n", groupname
));
554 result
= NT_STATUS_OK
;
560 /****************************************************************************
561 Create an auth_serversupplied_info structure for a connection_struct
562 ****************************************************************************/
564 static NTSTATUS
create_connection_server_info(struct smbd_server_connection
*sconn
,
565 TALLOC_CTX
*mem_ctx
, int snum
,
566 struct auth_serversupplied_info
*vuid_serverinfo
,
568 struct auth_serversupplied_info
**presult
)
570 if (lp_guest_only(snum
)) {
571 return make_server_info_guest(mem_ctx
, presult
);
574 if (vuid_serverinfo
!= NULL
) {
576 struct auth_serversupplied_info
*result
;
579 * This is the normal security != share case where we have a
580 * valid vuid from the session setup. */
582 if (vuid_serverinfo
->guest
) {
583 if (!lp_guest_ok(snum
)) {
584 DEBUG(2, ("guest user (from session setup) "
585 "not permitted to access this share "
586 "(%s)\n", lp_servicename(snum
)));
587 return NT_STATUS_ACCESS_DENIED
;
590 if (!user_ok_token(vuid_serverinfo
->unix_name
,
591 pdb_get_domain(vuid_serverinfo
->sam_account
),
592 vuid_serverinfo
->ptok
, snum
)) {
593 DEBUG(2, ("user '%s' (from session setup) not "
594 "permitted to access this share "
596 vuid_serverinfo
->unix_name
,
597 lp_servicename(snum
)));
598 return NT_STATUS_ACCESS_DENIED
;
602 result
= copy_serverinfo(mem_ctx
, vuid_serverinfo
);
603 if (result
== NULL
) {
604 return NT_STATUS_NO_MEMORY
;
611 if (lp_security() == SEC_SHARE
) {
616 /* add the sharename as a possible user name if we
617 are in share mode security */
619 add_session_user(sconn
, lp_servicename(snum
));
621 /* shall we let them in? */
623 if (!authorise_login(sconn
, snum
,user
,password
,&guest
)) {
624 DEBUG( 2, ( "Invalid username/password for [%s]\n",
625 lp_servicename(snum
)) );
626 return NT_STATUS_WRONG_PASSWORD
;
629 return make_serverinfo_from_username(mem_ctx
, user
, guest
,
633 DEBUG(0, ("invalid VUID (vuser) but not in security=share\n"));
634 return NT_STATUS_ACCESS_DENIED
;
638 /****************************************************************************
639 Make a connection, given the snum to connect to, and the vuser of the
640 connecting user if appropriate.
641 ****************************************************************************/
643 connection_struct
*make_connection_snum(struct smbd_server_connection
*sconn
,
644 int snum
, user_struct
*vuser
,
649 connection_struct
*conn
;
650 struct smb_filename
*smb_fname_cpath
= NULL
;
653 char addr
[INET6_ADDRSTRLEN
];
654 bool on_err_call_dis_hook
= false;
659 if (NT_STATUS_IS_ERR(*pstatus
= share_sanity_checks(snum
, dev
))) {
663 conn
= conn_new(sconn
);
665 DEBUG(0,("Couldn't find free connection.\n"));
666 *pstatus
= NT_STATUS_INSUFFICIENT_RESOURCES
;
670 conn
->params
->service
= snum
;
672 status
= create_connection_server_info(sconn
,
673 conn
, snum
, vuser
? vuser
->server_info
: NULL
, password
,
676 if (!NT_STATUS_IS_OK(status
)) {
677 DEBUG(1, ("create_connection_server_info failed: %s\n",
684 if ((lp_guest_only(snum
)) || (lp_security() == SEC_SHARE
)) {
685 conn
->force_user
= true;
688 add_session_user(sconn
, conn
->server_info
->unix_name
);
690 safe_strcpy(conn
->client_address
,
691 client_addr(get_client_fd(),addr
,sizeof(addr
)),
692 sizeof(conn
->client_address
)-1);
693 conn
->num_files_open
= 0;
694 conn
->lastused
= conn
->lastused_count
= time(NULL
);
696 conn
->printer
= (strncmp(dev
,"LPT",3) == 0);
697 conn
->ipc
= ( (strncmp(dev
,"IPC",3) == 0) ||
698 ( lp_enable_asu_support() && strequal(dev
,"ADMIN$")) );
700 /* Case options for the share. */
701 if (lp_casesensitive(snum
) == Auto
) {
702 /* We will be setting this per packet. Set to be case
703 * insensitive for now. */
704 conn
->case_sensitive
= False
;
706 conn
->case_sensitive
= (bool)lp_casesensitive(snum
);
709 conn
->case_preserve
= lp_preservecase(snum
);
710 conn
->short_case_preserve
= lp_shortpreservecase(snum
);
712 conn
->encrypt_level
= lp_smb_encrypt(snum
);
714 conn
->veto_list
= NULL
;
715 conn
->hide_list
= NULL
;
716 conn
->veto_oplock_list
= NULL
;
717 conn
->aio_write_behind_list
= NULL
;
719 conn
->read_only
= lp_readonly(SNUM(conn
));
720 conn
->admin_user
= False
;
722 if (*lp_force_user(snum
)) {
725 * Replace conn->server_info with a completely faked up one
726 * from the username we are forced into :-)
730 struct auth_serversupplied_info
*forced_serverinfo
;
732 fuser
= talloc_string_sub(conn
, lp_force_user(snum
), "%S",
733 lp_servicename(snum
));
736 *pstatus
= NT_STATUS_NO_MEMORY
;
740 status
= make_serverinfo_from_username(
741 conn
, fuser
, conn
->server_info
->guest
,
743 if (!NT_STATUS_IS_OK(status
)) {
749 TALLOC_FREE(conn
->server_info
);
750 conn
->server_info
= forced_serverinfo
;
752 conn
->force_user
= True
;
753 DEBUG(3,("Forced user %s\n", fuser
));
757 * If force group is true, then override
758 * any groupid stored for the connecting user.
761 if (*lp_force_group(snum
)) {
763 status
= find_forced_group(
764 conn
->force_user
, snum
, conn
->server_info
->unix_name
,
765 &conn
->server_info
->ptok
->user_sids
[1],
766 &conn
->server_info
->utok
.gid
);
768 if (!NT_STATUS_IS_OK(status
)) {
775 * We need to cache this gid, to use within
776 * change_to_user() separately from the conn->server_info
777 * struct. We only use conn->server_info directly if
778 * "force_user" was set.
780 conn
->force_group_gid
= conn
->server_info
->utok
.gid
;
783 conn
->vuid
= (vuser
!= NULL
) ? vuser
->vuid
: UID_FIELD_INVALID
;
786 char *s
= talloc_sub_advanced(talloc_tos(),
787 lp_servicename(SNUM(conn
)),
788 conn
->server_info
->unix_name
,
790 conn
->server_info
->utok
.gid
,
791 conn
->server_info
->sanitized_username
,
792 pdb_get_domain(conn
->server_info
->sam_account
),
796 *pstatus
= NT_STATUS_NO_MEMORY
;
800 if (!set_conn_connectpath(conn
,s
)) {
803 *pstatus
= NT_STATUS_NO_MEMORY
;
806 DEBUG(3,("Connect path is '%s' for service [%s]\n",s
,
807 lp_servicename(snum
)));
812 * New code to check if there's a share security descripter
813 * added from NT server manager. This is done after the
814 * smb.conf checks are done as we need a uid and token. JRA.
819 bool can_write
= False
;
821 can_write
= share_access_check(conn
->server_info
->ptok
,
822 lp_servicename(snum
),
826 if (!share_access_check(conn
->server_info
->ptok
,
827 lp_servicename(snum
),
829 /* No access, read or write. */
830 DEBUG(0,("make_connection: connection to %s "
831 "denied due to security "
833 lp_servicename(snum
)));
835 *pstatus
= NT_STATUS_ACCESS_DENIED
;
838 conn
->read_only
= True
;
842 /* Initialise VFS function pointers */
844 if (!smbd_vfs_init(conn
)) {
845 DEBUG(0, ("vfs_init failed for service %s\n",
846 lp_servicename(snum
)));
848 *pstatus
= NT_STATUS_BAD_NETWORK_NAME
;
853 * If widelinks are disallowed we need to canonicalise the connect
854 * path here to ensure we don't have any symlinks in the
855 * connectpath. We will be checking all paths on this connection are
856 * below this directory. We must do this after the VFS init as we
857 * depend on the realpath() pointer in the vfs table. JRA.
859 if (!lp_widelinks(snum
)) {
860 if (!canonicalize_connect_path(conn
)) {
861 DEBUG(0, ("canonicalize_connect_path failed "
862 "for service %s, path %s\n",
863 lp_servicename(snum
),
866 *pstatus
= NT_STATUS_BAD_NETWORK_NAME
;
871 if ((!conn
->printer
) && (!conn
->ipc
)) {
872 conn
->notify_ctx
= notify_init(conn
, server_id_self(),
873 smbd_messaging_context(),
874 smbd_event_context(),
878 /* ROOT Activities: */
880 * Enforce the max connections parameter.
883 if ((lp_max_connections(snum
) > 0)
884 && (count_current_connections(lp_servicename(SNUM(conn
)), True
) >=
885 lp_max_connections(snum
))) {
887 DEBUG(1, ("Max connections (%d) exceeded for %s\n",
888 lp_max_connections(snum
), lp_servicename(snum
)));
890 *pstatus
= NT_STATUS_INSUFFICIENT_RESOURCES
;
895 * Get us an entry in the connections db
897 if (!claim_connection(conn
, lp_servicename(snum
), 0)) {
898 DEBUG(1, ("Could not store connections entry\n"));
900 *pstatus
= NT_STATUS_INTERNAL_DB_ERROR
;
904 /* Preexecs are done here as they might make the dir we are to ChDir
906 /* execute any "root preexec = " line */
907 if (*lp_rootpreexec(snum
)) {
908 char *cmd
= talloc_sub_advanced(talloc_tos(),
909 lp_servicename(SNUM(conn
)),
910 conn
->server_info
->unix_name
,
912 conn
->server_info
->utok
.gid
,
913 conn
->server_info
->sanitized_username
,
914 pdb_get_domain(conn
->server_info
->sam_account
),
915 lp_rootpreexec(snum
));
916 DEBUG(5,("cmd=%s\n",cmd
));
917 ret
= smbrun(cmd
,NULL
);
919 if (ret
!= 0 && lp_rootpreexec_close(snum
)) {
920 DEBUG(1,("root preexec gave %d - failing "
921 "connection\n", ret
));
922 yield_connection(conn
, lp_servicename(snum
));
924 *pstatus
= NT_STATUS_ACCESS_DENIED
;
929 /* USER Activites: */
930 if (!change_to_user(conn
, conn
->vuid
)) {
931 /* No point continuing if they fail the basic checks */
932 DEBUG(0,("Can't become connected user!\n"));
933 yield_connection(conn
, lp_servicename(snum
));
935 *pstatus
= NT_STATUS_LOGON_FAILURE
;
939 /* Remember that a different vuid can connect later without these
942 /* Preexecs are done here as they might make the dir we are to ChDir
945 /* execute any "preexec = " line */
946 if (*lp_preexec(snum
)) {
947 char *cmd
= talloc_sub_advanced(talloc_tos(),
948 lp_servicename(SNUM(conn
)),
949 conn
->server_info
->unix_name
,
951 conn
->server_info
->utok
.gid
,
952 conn
->server_info
->sanitized_username
,
953 pdb_get_domain(conn
->server_info
->sam_account
),
955 ret
= smbrun(cmd
,NULL
);
957 if (ret
!= 0 && lp_preexec_close(snum
)) {
958 DEBUG(1,("preexec gave %d - failing connection\n",
960 *pstatus
= NT_STATUS_ACCESS_DENIED
;
965 #ifdef WITH_FAKE_KASERVER
966 if (lp_afs_share(snum
)) {
971 /* Add veto/hide lists */
972 if (!IS_IPC(conn
) && !IS_PRINT(conn
)) {
973 set_namearray( &conn
->veto_list
, lp_veto_files(snum
));
974 set_namearray( &conn
->hide_list
, lp_hide_files(snum
));
975 set_namearray( &conn
->veto_oplock_list
, lp_veto_oplocks(snum
));
976 set_namearray( &conn
->aio_write_behind_list
,
977 lp_aio_write_behind(snum
));
980 /* Invoke VFS make connection hook - do this before the VFS_STAT call
981 to allow any filesystems needing user credentials to initialize
984 if (SMB_VFS_CONNECT(conn
, lp_servicename(snum
),
985 conn
->server_info
->unix_name
) < 0) {
986 DEBUG(0,("make_connection: VFS make connection failed!\n"));
987 *pstatus
= NT_STATUS_UNSUCCESSFUL
;
991 /* Any error exit after here needs to call the disconnect hook. */
992 on_err_call_dis_hook
= true;
994 status
= create_synthetic_smb_fname(talloc_tos(), conn
->connectpath
,
995 NULL
, NULL
, &smb_fname_cpath
);
996 if (!NT_STATUS_IS_OK(status
)) {
1001 /* win2000 does not check the permissions on the directory
1002 during the tree connect, instead relying on permission
1003 check during individual operations. To match this behaviour
1004 I have disabled this chdir check (tridge) */
1005 /* the alternative is just to check the directory exists */
1006 if ((ret
= SMB_VFS_STAT(conn
, smb_fname_cpath
)) != 0 ||
1007 !S_ISDIR(smb_fname_cpath
->st
.st_ex_mode
)) {
1008 if (ret
== 0 && !S_ISDIR(smb_fname_cpath
->st
.st_ex_mode
)) {
1009 DEBUG(0,("'%s' is not a directory, when connecting to "
1010 "[%s]\n", conn
->connectpath
,
1011 lp_servicename(snum
)));
1013 DEBUG(0,("'%s' does not exist or permission denied "
1014 "when connecting to [%s] Error was %s\n",
1015 conn
->connectpath
, lp_servicename(snum
),
1018 *pstatus
= NT_STATUS_BAD_NETWORK_NAME
;
1022 string_set(&conn
->origpath
,conn
->connectpath
);
1024 #if SOFTLINK_OPTIMISATION
1025 /* resolve any soft links early if possible */
1026 if (vfs_ChDir(conn
,conn
->connectpath
) == 0) {
1027 TALLOC_CTX
*ctx
= talloc_tos();
1028 char *s
= vfs_GetWd(ctx
,s
);
1030 *status
= map_nt_error_from_unix(errno
);
1033 if (!set_conn_connectpath(conn
,s
)) {
1034 *status
= NT_STATUS_NO_MEMORY
;
1037 vfs_ChDir(conn
,conn
->connectpath
);
1041 /* Figure out the characteristics of the underlying filesystem. This
1042 * assumes that all the filesystem mounted withing a share path have
1043 * the same characteristics, which is likely but not guaranteed.
1046 conn
->fs_capabilities
= SMB_VFS_FS_CAPABILITIES(conn
, &conn
->ts_res
);
1049 * Print out the 'connected as' stuff here as we need
1050 * to know the effective uid and gid we will be using
1051 * (at least initially).
1054 if( DEBUGLVL( IS_IPC(conn
) ? 3 : 1 ) ) {
1055 dbgtext( "%s (%s) ", get_remote_machine_name(),
1056 conn
->client_address
);
1057 dbgtext( "%s", srv_is_signing_active(smbd_server_conn
) ? "signed " : "");
1058 dbgtext( "connect to service %s ", lp_servicename(snum
) );
1059 dbgtext( "initially as user %s ",
1060 conn
->server_info
->unix_name
);
1061 dbgtext( "(uid=%d, gid=%d) ", (int)geteuid(), (int)getegid() );
1062 dbgtext( "(pid %d)\n", (int)sys_getpid() );
1065 /* we've finished with the user stuff - go back to root */
1066 change_to_root_user();
1070 TALLOC_FREE(smb_fname_cpath
);
1071 change_to_root_user();
1072 if (on_err_call_dis_hook
) {
1073 /* Call VFS disconnect hook */
1074 SMB_VFS_DISCONNECT(conn
);
1076 yield_connection(conn
, lp_servicename(snum
));
1081 /****************************************************************************
1082 Make a connection to a service.
1085 ****************************************************************************/
1087 connection_struct
*make_connection(struct smbd_server_connection
*sconn
,
1088 const char *service_in
, DATA_BLOB password
,
1089 const char *pdev
, uint16 vuid
,
1093 user_struct
*vuser
= NULL
;
1097 char addr
[INET6_ADDRSTRLEN
];
1101 /* This must ONLY BE CALLED AS ROOT. As it exits this function as
1103 if (!non_root_mode() && (euid
= geteuid()) != 0) {
1104 DEBUG(0,("make_connection: PANIC ERROR. Called as nonroot "
1105 "(%u)\n", (unsigned int)euid
));
1106 smb_panic("make_connection: PANIC ERROR. Called as nonroot\n");
1109 if (conn_num_open(sconn
) > 2047) {
1110 *status
= NT_STATUS_INSUFF_SERVER_RESOURCES
;
1114 if(lp_security() != SEC_SHARE
) {
1115 vuser
= get_valid_user_struct(sconn
, vuid
);
1117 DEBUG(1,("make_connection: refusing to connect with "
1118 "no session setup\n"));
1119 *status
= NT_STATUS_ACCESS_DENIED
;
1124 /* Logic to try and connect to the correct [homes] share, preferably
1125 without too many getpwnam() lookups. This is particulary nasty for
1126 winbind usernames, where the share name isn't the same as unix
1129 The snum of the homes share is stored on the vuser at session setup
1133 if (strequal(service_in
,HOMES_NAME
)) {
1134 if(lp_security() != SEC_SHARE
) {
1135 DATA_BLOB no_pw
= data_blob_null
;
1136 if (vuser
->homes_snum
== -1) {
1137 DEBUG(2, ("[homes] share not available for "
1138 "this user because it was not found "
1139 "or created at session setup "
1141 *status
= NT_STATUS_BAD_NETWORK_NAME
;
1144 DEBUG(5, ("making a connection to [homes] service "
1145 "created at session setup time\n"));
1146 return make_connection_snum(sconn
,
1151 /* Security = share. Try with
1152 * current_user_info.smb_name as the username. */
1153 if (*current_user_info
.smb_name
) {
1154 fstring unix_username
;
1155 fstrcpy(unix_username
,
1156 current_user_info
.smb_name
);
1157 map_username(sconn
, unix_username
);
1158 snum
= find_service(unix_username
);
1161 DEBUG(5, ("making a connection to 'homes' "
1162 "service %s based on "
1163 "security=share\n", service_in
));
1164 return make_connection_snum(sconn
,
1170 } else if ((lp_security() != SEC_SHARE
) && (vuser
->homes_snum
!= -1)
1171 && strequal(service_in
,
1172 lp_servicename(vuser
->homes_snum
))) {
1173 DATA_BLOB no_pw
= data_blob_null
;
1174 DEBUG(5, ("making a connection to 'homes' service [%s] "
1175 "created at session setup time\n", service_in
));
1176 return make_connection_snum(sconn
,
1182 fstrcpy(service
, service_in
);
1184 strlower_m(service
);
1186 snum
= find_service(service
);
1189 if (strequal(service
,"IPC$") ||
1190 (lp_enable_asu_support() && strequal(service
,"ADMIN$"))) {
1191 DEBUG(3,("refusing IPC connection to %s\n", service
));
1192 *status
= NT_STATUS_ACCESS_DENIED
;
1196 DEBUG(3,("%s (%s) couldn't find service %s\n",
1197 get_remote_machine_name(),
1198 client_addr(get_client_fd(),addr
,sizeof(addr
)),
1200 *status
= NT_STATUS_BAD_NETWORK_NAME
;
1204 /* Handle non-Dfs clients attempting connections to msdfs proxy */
1205 if (lp_host_msdfs() && (*lp_msdfs_proxy(snum
) != '\0')) {
1206 DEBUG(3, ("refusing connection to dfs proxy share '%s' "
1207 "(pointing to %s)\n",
1208 service
, lp_msdfs_proxy(snum
)));
1209 *status
= NT_STATUS_BAD_NETWORK_NAME
;
1213 DEBUG(5, ("making a connection to 'normal' service %s\n", service
));
1215 return make_connection_snum(sconn
, snum
, vuser
,
1220 /****************************************************************************
1222 ****************************************************************************/
1224 void close_cnum(connection_struct
*conn
, uint16 vuid
)
1226 file_close_conn(conn
);
1228 if (!IS_IPC(conn
)) {
1229 dptr_closecnum(conn
);
1232 change_to_root_user();
1234 DEBUG(IS_IPC(conn
)?3:1, ("%s (%s) closed connection to service %s\n",
1235 get_remote_machine_name(),
1236 conn
->client_address
,
1237 lp_servicename(SNUM(conn
))));
1239 /* Call VFS disconnect hook */
1240 SMB_VFS_DISCONNECT(conn
);
1242 yield_connection(conn
, lp_servicename(SNUM(conn
)));
1244 /* make sure we leave the directory available for unmount */
1245 vfs_ChDir(conn
, "/");
1247 /* execute any "postexec = " line */
1248 if (*lp_postexec(SNUM(conn
)) &&
1249 change_to_user(conn
, vuid
)) {
1250 char *cmd
= talloc_sub_advanced(talloc_tos(),
1251 lp_servicename(SNUM(conn
)),
1252 conn
->server_info
->unix_name
,
1254 conn
->server_info
->utok
.gid
,
1255 conn
->server_info
->sanitized_username
,
1256 pdb_get_domain(conn
->server_info
->sam_account
),
1257 lp_postexec(SNUM(conn
)));
1260 change_to_root_user();
1263 change_to_root_user();
1264 /* execute any "root postexec = " line */
1265 if (*lp_rootpostexec(SNUM(conn
))) {
1266 char *cmd
= talloc_sub_advanced(talloc_tos(),
1267 lp_servicename(SNUM(conn
)),
1268 conn
->server_info
->unix_name
,
1270 conn
->server_info
->utok
.gid
,
1271 conn
->server_info
->sanitized_username
,
1272 pdb_get_domain(conn
->server_info
->sam_account
),
1273 lp_rootpostexec(SNUM(conn
)));