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 "system/filesys.h"
22 #include "system/passwd.h" /* uid_wrapper */
23 #include "../lib/tsocket/tsocket.h"
24 #include "smbd/smbd.h"
25 #include "smbd/globals.h"
26 #include "../librpc/gen_ndr/netlogon.h"
27 #include "../libcli/security/security.h"
28 #include "printing/pcap.h"
29 #include "passdb/lookup_sid.h"
31 #include "lib/param/loadparm.h"
34 extern userdom_struct current_user_info;
36 static bool canonicalize_connect_path(connection_struct *conn)
39 char *resolved_name = SMB_VFS_REALPATH(conn,conn->connectpath);
43 ret = set_conn_connectpath(conn,resolved_name);
44 SAFE_FREE(resolved_name);
48 /****************************************************************************
49 Ensure when setting connectpath it is a canonicalized (no ./ // or ../)
50 absolute path stating in / and not ending in /.
51 Observent people will notice a similarity between this and check_path_syntax :-).
52 ****************************************************************************/
54 bool set_conn_connectpath(connection_struct *conn, const char *connectpath)
58 const char *s = connectpath;
59 bool start_of_name_component = true;
61 if (connectpath == NULL || connectpath[0] == '\0') {
65 /* Allocate for strlen + '\0' + possible leading '/' */
66 destname = (char *)SMB_MALLOC(strlen(connectpath) + 2);
72 *d++ = '/'; /* Always start with root. */
76 /* Eat multiple '/' */
80 if ((d > destname + 1) && (*s != '\0')) {
83 start_of_name_component = True;
87 if (start_of_name_component) {
88 if ((s[0] == '.') && (s[1] == '.') && (s[2] == '/' || s[2] == '\0')) {
89 /* Uh oh - "/../" or "/..\0" ! */
91 /* Go past the ../ or .. */
95 s += 2; /* Go past the .. */
98 /* If we just added a '/' - delete it */
99 if ((d > destname) && (*(d-1) == '/')) {
104 /* Are we at the start ? Can't go back further if so. */
106 *d++ = '/'; /* Can't delete root */
109 /* Go back one level... */
110 /* Decrement d first as d points to the *next* char to write into. */
111 for (d--; d > destname; d--) {
116 /* We're still at the start of a name component, just the previous one. */
118 } else if ((s[0] == '.') && ((s[1] == '\0') || s[1] == '/')) {
119 /* Component of pathname can't be "." only - skip the '.' . */
133 /* Get the size of the next MB character. */
134 next_codepoint(s,&siz);
155 start_of_name_component = false;
159 /* And must not end in '/' */
160 if (d > destname + 1 && (*(d-1) == '/')) {
164 DEBUG(10,("set_conn_connectpath: service %s, connectpath = %s\n",
165 lp_servicename(SNUM(conn)), destname ));
167 string_set(&conn->connectpath, destname);
172 /****************************************************************************
173 Load parameters specific to a connection/service.
174 ****************************************************************************/
176 bool set_current_service(connection_struct *conn, uint16 flags, bool do_chdir)
185 conn->lastused_count++;
190 vfs_ChDir(conn,conn->connectpath) != 0 &&
191 vfs_ChDir(conn,conn->origpath) != 0) {
192 DEBUG(((errno!=EACCES)?0:3),("chdir (%s) failed, reason: %s\n",
193 conn->connectpath, strerror(errno)));
197 if ((conn == last_conn) && (last_flags == flags)) {
204 /* Obey the client case sensitivity requests - only for clients that support it. */
205 switch (lp_casesensitive(snum)) {
208 /* We need this uglyness due to DOS/Win9x clients that lie about case insensitivity. */
209 enum remote_arch_types ra_type = get_remote_arch();
210 if ((ra_type != RA_SAMBA) && (ra_type != RA_CIFSFS)) {
211 /* Client can't support per-packet case sensitive pathnames. */
212 conn->case_sensitive = False;
214 conn->case_sensitive = !(flags & FLAG_CASELESS_PATHNAMES);
219 conn->case_sensitive = True;
222 conn->case_sensitive = False;
228 /****************************************************************************
229 do some basic sainity checks on the share.
230 This function modifies dev, ecode.
231 ****************************************************************************/
233 static NTSTATUS share_sanity_checks(const struct tsocket_address *remote_address,
240 raddr = tsocket_address_inet_addr_string(remote_address,
243 return NT_STATUS_NO_MEMORY;
246 if (!lp_snum_ok(snum) ||
247 !allow_access(lp_hostsdeny(snum), lp_hostsallow(snum),
249 return NT_STATUS_ACCESS_DENIED;
252 if (dev[0] == '?' || !dev[0]) {
253 if (lp_print_ok(snum)) {
254 fstrcpy(dev,"LPT1:");
255 } else if (strequal(lp_fstype(snum), "IPC")) {
264 if (lp_print_ok(snum)) {
265 if (!strequal(dev, "LPT1:")) {
266 return NT_STATUS_BAD_DEVICE_TYPE;
268 } else if (strequal(lp_fstype(snum), "IPC")) {
269 if (!strequal(dev, "IPC")) {
270 return NT_STATUS_BAD_DEVICE_TYPE;
272 } else if (!strequal(dev, "A:")) {
273 return NT_STATUS_BAD_DEVICE_TYPE;
276 /* Behave as a printer if we are supposed to */
277 if (lp_print_ok(snum) && (strcmp(dev, "A:") == 0)) {
278 fstrcpy(dev, "LPT1:");
285 * Go through lookup_name etc to find the force'd group.
287 * Create a new token from src_token, replacing the primary group sid with the
291 static NTSTATUS find_forced_group(bool force_user,
292 int snum, const char *username,
293 struct dom_sid *pgroup_sid,
296 NTSTATUS result = NT_STATUS_NO_SUCH_GROUP;
297 TALLOC_CTX *frame = talloc_stackframe();
298 struct dom_sid group_sid;
299 enum lsa_SidType type;
301 bool user_must_be_member = False;
304 groupname = talloc_strdup(talloc_tos(), lp_force_group(snum));
305 if (groupname == NULL) {
306 DEBUG(1, ("talloc_strdup failed\n"));
307 result = NT_STATUS_NO_MEMORY;
311 if (groupname[0] == '+') {
312 user_must_be_member = True;
316 groupname = talloc_string_sub(talloc_tos(), groupname,
317 "%S", lp_servicename(snum));
318 if (groupname == NULL) {
319 DEBUG(1, ("talloc_string_sub failed\n"));
320 result = NT_STATUS_NO_MEMORY;
324 if (!lookup_name_smbconf(talloc_tos(), groupname,
325 LOOKUP_NAME_ALL|LOOKUP_NAME_GROUP,
326 NULL, NULL, &group_sid, &type)) {
327 DEBUG(10, ("lookup_name_smbconf(%s) failed\n",
332 if ((type != SID_NAME_DOM_GRP) && (type != SID_NAME_ALIAS) &&
333 (type != SID_NAME_WKN_GRP)) {
334 DEBUG(10, ("%s is a %s, not a group\n", groupname,
335 sid_type_lookup(type)));
339 if (!sid_to_gid(&group_sid, &gid)) {
340 DEBUG(10, ("sid_to_gid(%s) for %s failed\n",
341 sid_string_dbg(&group_sid), groupname));
346 * If the user has been forced and the forced group starts with a '+',
347 * then we only set the group to be the forced group if the forced
348 * user is a member of that group. Otherwise, the meaning of the '+'
352 if (force_user && user_must_be_member) {
353 if (user_in_group_sid(username, &group_sid)) {
354 sid_copy(pgroup_sid, &group_sid);
356 DEBUG(3,("Forced group %s for member %s\n",
357 groupname, username));
359 DEBUG(0,("find_forced_group: forced user %s is not a member "
360 "of forced group %s. Disallowing access.\n",
361 username, groupname ));
362 result = NT_STATUS_MEMBER_NOT_IN_GROUP;
366 sid_copy(pgroup_sid, &group_sid);
368 DEBUG(3,("Forced group %s\n", groupname));
371 result = NT_STATUS_OK;
377 /****************************************************************************
378 Create an auth_session_info structure for a connection_struct
379 ****************************************************************************/
381 static NTSTATUS create_connection_session_info(struct smbd_server_connection *sconn,
382 TALLOC_CTX *mem_ctx, int snum,
383 struct auth_session_info *vuid_serverinfo,
385 struct auth_session_info **presult)
387 if (lp_guest_only(snum)) {
388 return make_session_info_guest(mem_ctx, presult);
391 if (vuid_serverinfo != NULL) {
393 struct auth_session_info *result;
396 * This is the normal security != share case where we have a
397 * valid vuid from the session setup. */
399 if (security_session_user_level(vuid_serverinfo, NULL) < SECURITY_USER) {
400 if (!lp_guest_ok(snum)) {
401 DEBUG(2, ("guest user (from session setup) "
402 "not permitted to access this share "
403 "(%s)\n", lp_servicename(snum)));
404 return NT_STATUS_ACCESS_DENIED;
407 if (!user_ok_token(vuid_serverinfo->unix_info->unix_name,
408 vuid_serverinfo->info->domain_name,
409 vuid_serverinfo->security_token, snum)) {
410 DEBUG(2, ("user '%s' (from session setup) not "
411 "permitted to access this share "
413 vuid_serverinfo->unix_info->unix_name,
414 lp_servicename(snum)));
415 return NT_STATUS_ACCESS_DENIED;
419 result = copy_session_info(mem_ctx, vuid_serverinfo);
420 if (result == NULL) {
421 return NT_STATUS_NO_MEMORY;
428 if (lp_security() == SEC_SHARE) {
433 /* add the sharename as a possible user name if we
434 are in share mode security */
436 add_session_user(sconn, lp_servicename(snum));
438 /* shall we let them in? */
440 if (!authorise_login(sconn, snum,user,password,&guest)) {
441 DEBUG( 2, ( "Invalid username/password for [%s]\n",
442 lp_servicename(snum)) );
443 return NT_STATUS_WRONG_PASSWORD;
446 return make_session_info_from_username(mem_ctx, user, guest,
450 DEBUG(0, ("invalid VUID (vuser) but not in security=share\n"));
451 return NT_STATUS_ACCESS_DENIED;
454 /****************************************************************************
455 set relavent user and group settings corresponding to force user/group
456 configuration for the given snum.
457 ****************************************************************************/
459 NTSTATUS set_conn_force_user_group(connection_struct *conn, int snum)
463 if (*lp_force_user(snum)) {
466 * Replace conn->session_info with a completely faked up one
467 * from the username we are forced into :-)
471 struct auth_session_info *forced_serverinfo;
474 fuser = talloc_string_sub(conn, lp_force_user(snum), "%S",
475 lp_const_servicename(snum));
477 return NT_STATUS_NO_MEMORY;
480 guest = security_session_user_level(conn->session_info, NULL) < SECURITY_USER;
482 status = make_session_info_from_username(
486 if (!NT_STATUS_IS_OK(status)) {
490 TALLOC_FREE(conn->session_info);
491 conn->session_info = forced_serverinfo;
493 conn->force_user = true;
494 DEBUG(3,("Forced user %s\n", fuser));
498 * If force group is true, then override
499 * any groupid stored for the connecting user.
502 if (*lp_force_group(snum)) {
504 status = find_forced_group(
505 conn->force_user, snum, conn->session_info->unix_info->unix_name,
506 &conn->session_info->security_token->sids[1],
507 &conn->session_info->unix_token->gid);
509 if (!NT_STATUS_IS_OK(status)) {
514 * We need to cache this gid, to use within
515 * change_to_user() separately from the conn->session_info
516 * struct. We only use conn->session_info directly if
517 * "force_user" was set.
519 conn->force_group_gid = conn->session_info->unix_token->gid;
525 /****************************************************************************
526 Make a connection, given the snum to connect to, and the vuser of the
527 connecting user if appropriate.
528 ****************************************************************************/
530 connection_struct *make_connection_snum(struct smbd_server_connection *sconn,
531 int snum, user_struct *vuser,
536 connection_struct *conn = NULL;
537 struct smb_filename *smb_fname_cpath = NULL;
540 bool on_err_call_dis_hook = false;
541 bool claimed_connection = false;
548 *pstatus = share_sanity_checks(sconn->remote_address,
549 sconn->remote_hostname,
552 if (NT_STATUS_IS_ERR(*pstatus)) {
556 conn = conn_new(sconn);
558 DEBUG(0,("Couldn't find free connection.\n"));
559 *pstatus = NT_STATUS_INSUFFICIENT_RESOURCES;
563 conn->params->service = snum;
565 status = create_connection_session_info(sconn,
566 conn, snum, vuser ? vuser->session_info : NULL, password,
567 &conn->session_info);
569 if (!NT_STATUS_IS_OK(status)) {
570 DEBUG(1, ("create_connection_session_info failed: %s\n",
576 if ((lp_guest_only(snum)) || (lp_security() == SEC_SHARE)) {
577 conn->force_user = true;
580 add_session_user(sconn, conn->session_info->unix_info->unix_name);
582 conn->num_files_open = 0;
583 conn->lastused = conn->lastused_count = time(NULL);
585 conn->printer = (strncmp(dev,"LPT",3) == 0);
586 conn->ipc = ( (strncmp(dev,"IPC",3) == 0) ||
587 ( lp_enable_asu_support() && strequal(dev,"ADMIN$")) );
589 /* Case options for the share. */
590 if (lp_casesensitive(snum) == Auto) {
591 /* We will be setting this per packet. Set to be case
592 * insensitive for now. */
593 conn->case_sensitive = False;
595 conn->case_sensitive = (bool)lp_casesensitive(snum);
598 conn->case_preserve = lp_preservecase(snum);
599 conn->short_case_preserve = lp_shortpreservecase(snum);
601 conn->encrypt_level = lp_smb_encrypt(snum);
603 conn->veto_list = NULL;
604 conn->hide_list = NULL;
605 conn->veto_oplock_list = NULL;
606 conn->aio_write_behind_list = NULL;
608 conn->read_only = lp_readonly(SNUM(conn));
610 status = set_conn_force_user_group(conn, snum);
611 if (!NT_STATUS_IS_OK(status)) {
617 conn->vuid = (vuser != NULL) ? vuser->vuid : UID_FIELD_INVALID;
620 char *s = talloc_sub_advanced(talloc_tos(),
621 lp_servicename(SNUM(conn)),
622 conn->session_info->unix_info->unix_name,
624 conn->session_info->unix_token->gid,
625 conn->session_info->unix_info->sanitized_username,
626 conn->session_info->info->domain_name,
629 *pstatus = NT_STATUS_NO_MEMORY;
633 if (!set_conn_connectpath(conn,s)) {
635 *pstatus = NT_STATUS_NO_MEMORY;
638 DEBUG(3,("Connect path is '%s' for service [%s]\n",s,
639 lp_servicename(snum)));
644 * New code to check if there's a share security descripter
645 * added from NT server manager. This is done after the
646 * smb.conf checks are done as we need a uid and token. JRA.
650 share_access_check(conn->session_info->security_token,
651 lp_servicename(snum), MAXIMUM_ALLOWED_ACCESS,
652 &conn->share_access);
654 if ((conn->share_access & FILE_WRITE_DATA) == 0) {
655 if ((conn->share_access & FILE_READ_DATA) == 0) {
656 /* No access, read or write. */
657 DEBUG(0,("make_connection: connection to %s "
658 "denied due to security "
660 lp_servicename(snum)));
661 *pstatus = NT_STATUS_ACCESS_DENIED;
664 conn->read_only = True;
667 /* Initialise VFS function pointers */
669 if (!smbd_vfs_init(conn)) {
670 DEBUG(0, ("vfs_init failed for service %s\n",
671 lp_servicename(snum)));
672 *pstatus = NT_STATUS_BAD_NETWORK_NAME;
676 /* ROOT Activities: */
677 /* explicitly check widelinks here so that we can correctly warn
679 widelinks_warning(snum);
682 * Enforce the max connections parameter.
685 if ((lp_max_connections(snum) > 0)
686 && (count_current_connections(lp_servicename(SNUM(conn)), True) >=
687 lp_max_connections(snum))) {
689 DEBUG(1, ("Max connections (%d) exceeded for %s\n",
690 lp_max_connections(snum), lp_servicename(snum)));
691 *pstatus = NT_STATUS_INSUFFICIENT_RESOURCES;
696 * Get us an entry in the connections db
698 if (!claim_connection(conn, lp_servicename(snum))) {
699 DEBUG(1, ("Could not store connections entry\n"));
700 *pstatus = NT_STATUS_INTERNAL_DB_ERROR;
703 claimed_connection = true;
705 /* Invoke VFS make connection hook - this must be the first
706 filesystem operation that we do. */
708 if (SMB_VFS_CONNECT(conn, lp_servicename(snum),
709 conn->session_info->unix_info->unix_name) < 0) {
710 DEBUG(0,("make_connection: VFS make connection failed!\n"));
711 *pstatus = NT_STATUS_UNSUCCESSFUL;
715 /* Any error exit after here needs to call the disconnect hook. */
716 on_err_call_dis_hook = true;
718 if ((!conn->printer) && (!conn->ipc)) {
719 conn->notify_ctx = notify_init(conn,
720 messaging_server_id(sconn->msg_ctx),
727 * Fix compatibility issue pointed out by Volker.
728 * We pass the conn->connectpath to the preexec
729 * scripts as a parameter, so attempt to canonicalize
730 * it here before calling the preexec scripts.
731 * We ignore errors here, as it is possible that
732 * the conn->connectpath doesn't exist yet and
733 * the preexec scripts will create them.
736 (void)canonicalize_connect_path(conn);
738 /* Preexecs are done here as they might make the dir we are to ChDir
740 /* execute any "root preexec = " line */
741 if (*lp_rootpreexec(snum)) {
742 char *cmd = talloc_sub_advanced(talloc_tos(),
743 lp_servicename(SNUM(conn)),
744 conn->session_info->unix_info->unix_name,
746 conn->session_info->unix_token->gid,
747 conn->session_info->unix_info->sanitized_username,
748 conn->session_info->info->domain_name,
749 lp_rootpreexec(snum));
750 DEBUG(5,("cmd=%s\n",cmd));
751 ret = smbrun(cmd,NULL);
753 if (ret != 0 && lp_rootpreexec_close(snum)) {
754 DEBUG(1,("root preexec gave %d - failing "
755 "connection\n", ret));
756 *pstatus = NT_STATUS_ACCESS_DENIED;
761 /* USER Activites: */
762 if (!change_to_user(conn, conn->vuid)) {
763 /* No point continuing if they fail the basic checks */
764 DEBUG(0,("Can't become connected user!\n"));
765 *pstatus = NT_STATUS_LOGON_FAILURE;
772 /* Remember that a different vuid can connect later without these
775 /* Preexecs are done here as they might make the dir we are to ChDir
778 /* execute any "preexec = " line */
779 if (*lp_preexec(snum)) {
780 char *cmd = talloc_sub_advanced(talloc_tos(),
781 lp_servicename(SNUM(conn)),
782 conn->session_info->unix_info->unix_name,
784 conn->session_info->unix_token->gid,
785 conn->session_info->unix_info->sanitized_username,
786 conn->session_info->info->domain_name,
788 ret = smbrun(cmd,NULL);
790 if (ret != 0 && lp_preexec_close(snum)) {
791 DEBUG(1,("preexec gave %d - failing connection\n",
793 *pstatus = NT_STATUS_ACCESS_DENIED;
798 #ifdef WITH_FAKE_KASERVER
799 if (lp_afs_share(snum)) {
805 * we've finished with the user stuff - go back to root
806 * so the SMB_VFS_STAT call will only fail on path errors,
807 * not permission problems.
809 change_to_root_user();
810 /* ROOT Activites: */
813 * If widelinks are disallowed we need to canonicalise the connect
814 * path here to ensure we don't have any symlinks in the
815 * connectpath. We will be checking all paths on this connection are
816 * below this directory. We must do this after the VFS init as we
817 * depend on the realpath() pointer in the vfs table. JRA.
819 if (!lp_widelinks(snum)) {
820 if (!canonicalize_connect_path(conn)) {
821 DEBUG(0, ("canonicalize_connect_path failed "
822 "for service %s, path %s\n",
823 lp_servicename(snum),
825 *pstatus = NT_STATUS_BAD_NETWORK_NAME;
830 /* Add veto/hide lists */
831 if (!IS_IPC(conn) && !IS_PRINT(conn)) {
832 set_namearray( &conn->veto_list, lp_veto_files(snum));
833 set_namearray( &conn->hide_list, lp_hide_files(snum));
834 set_namearray( &conn->veto_oplock_list, lp_veto_oplocks(snum));
835 set_namearray( &conn->aio_write_behind_list,
836 lp_aio_write_behind(snum));
838 status = create_synthetic_smb_fname(talloc_tos(), conn->connectpath,
839 NULL, NULL, &smb_fname_cpath);
840 if (!NT_STATUS_IS_OK(status)) {
845 /* win2000 does not check the permissions on the directory
846 during the tree connect, instead relying on permission
847 check during individual operations. To match this behaviour
848 I have disabled this chdir check (tridge) */
849 /* the alternative is just to check the directory exists */
851 if ((ret = SMB_VFS_STAT(conn, smb_fname_cpath)) != 0 ||
852 !S_ISDIR(smb_fname_cpath->st.st_ex_mode)) {
853 if (ret == 0 && !S_ISDIR(smb_fname_cpath->st.st_ex_mode)) {
854 DEBUG(0,("'%s' is not a directory, when connecting to "
855 "[%s]\n", conn->connectpath,
856 lp_servicename(snum)));
858 DEBUG(0,("'%s' does not exist or permission denied "
859 "when connecting to [%s] Error was %s\n",
860 conn->connectpath, lp_servicename(snum),
863 *pstatus = NT_STATUS_BAD_NETWORK_NAME;
866 conn->base_share_dev = smb_fname_cpath->st.st_ex_dev;
868 string_set(&conn->origpath,conn->connectpath);
870 /* Figure out the characteristics of the underlying filesystem. This
871 * assumes that all the filesystem mounted withing a share path have
872 * the same characteristics, which is likely but not guaranteed.
875 conn->fs_capabilities = SMB_VFS_FS_CAPABILITIES(conn, &conn->ts_res);
878 * Print out the 'connected as' stuff here as we need
879 * to know the effective uid and gid we will be using
880 * (at least initially).
883 if( DEBUGLVL( IS_IPC(conn) ? 3 : 1 ) ) {
884 dbgtext( "%s (%s) ", get_remote_machine_name(),
885 tsocket_address_string(conn->sconn->remote_address,
887 dbgtext( "%s", srv_is_signing_active(sconn) ? "signed " : "");
888 dbgtext( "connect to service %s ", lp_servicename(snum) );
889 dbgtext( "initially as user %s ",
890 conn->session_info->unix_info->unix_name );
891 dbgtext( "(uid=%d, gid=%d) ", (int)effuid, (int)effgid );
892 dbgtext( "(pid %d)\n", (int)sys_getpid() );
898 TALLOC_FREE(smb_fname_cpath);
899 /* We must exit this function as root. */
900 if (geteuid() != 0) {
901 change_to_root_user();
903 if (on_err_call_dis_hook) {
904 /* Call VFS disconnect hook */
905 SMB_VFS_DISCONNECT(conn);
907 if (claimed_connection) {
908 yield_connection(conn, lp_servicename(snum));
916 /****************************************************************************
917 Make a connection to a service.
920 ****************************************************************************/
922 connection_struct *make_connection(struct smbd_server_connection *sconn,
923 const char *service_in, DATA_BLOB password,
924 const char *pdev, uint16 vuid,
928 user_struct *vuser = NULL;
929 char *service = NULL;
935 /* This must ONLY BE CALLED AS ROOT. As it exits this function as
937 if (!non_root_mode() && (euid = geteuid()) != 0) {
938 DEBUG(0,("make_connection: PANIC ERROR. Called as nonroot "
939 "(%u)\n", (unsigned int)euid ));
940 smb_panic("make_connection: PANIC ERROR. Called as nonroot\n");
943 if (conn_num_open(sconn) > 2047) {
944 *status = NT_STATUS_INSUFF_SERVER_RESOURCES;
948 if(lp_security() != SEC_SHARE) {
949 vuser = get_valid_user_struct(sconn, vuid);
951 DEBUG(1,("make_connection: refusing to connect with "
952 "no session setup\n"));
953 *status = NT_STATUS_ACCESS_DENIED;
958 /* Logic to try and connect to the correct [homes] share, preferably
959 without too many getpwnam() lookups. This is particulary nasty for
960 winbind usernames, where the share name isn't the same as unix
963 The snum of the homes share is stored on the vuser at session setup
967 if (strequal(service_in,HOMES_NAME)) {
968 if(lp_security() != SEC_SHARE) {
969 DATA_BLOB no_pw = data_blob_null;
970 if (vuser->homes_snum == -1) {
971 DEBUG(2, ("[homes] share not available for "
972 "this user because it was not found "
973 "or created at session setup "
975 *status = NT_STATUS_BAD_NETWORK_NAME;
978 DEBUG(5, ("making a connection to [homes] service "
979 "created at session setup time\n"));
980 return make_connection_snum(sconn,
985 /* Security = share. Try with
986 * current_user_info.smb_name as the username. */
987 if (*current_user_info.smb_name) {
988 char *unix_username = NULL;
989 (void)map_username(talloc_tos(),
990 current_user_info.smb_name,
992 snum = find_service(talloc_tos(),
995 if (!unix_username) {
996 *status = NT_STATUS_NO_MEMORY;
1001 DEBUG(5, ("making a connection to 'homes' "
1002 "service %s based on "
1003 "security=share\n", service_in));
1004 return make_connection_snum(sconn,
1010 } else if ((lp_security() != SEC_SHARE) && (vuser->homes_snum != -1)
1011 && strequal(service_in,
1012 lp_servicename(vuser->homes_snum))) {
1013 DATA_BLOB no_pw = data_blob_null;
1014 DEBUG(5, ("making a connection to 'homes' service [%s] "
1015 "created at session setup time\n", service_in));
1016 return make_connection_snum(sconn,
1022 service = talloc_strdup(talloc_tos(), service_in);
1024 *status = NT_STATUS_NO_MEMORY;
1028 strlower_m(service);
1030 snum = find_service(talloc_tos(), service, &service);
1032 *status = NT_STATUS_NO_MEMORY;
1037 if (strequal(service,"IPC$") ||
1038 (lp_enable_asu_support() && strequal(service,"ADMIN$"))) {
1039 DEBUG(3,("refusing IPC connection to %s\n", service));
1040 *status = NT_STATUS_ACCESS_DENIED;
1044 DEBUG(3,("%s (%s) couldn't find service %s\n",
1045 get_remote_machine_name(),
1046 tsocket_address_string(
1047 sconn->remote_address, talloc_tos()),
1049 *status = NT_STATUS_BAD_NETWORK_NAME;
1053 /* Handle non-Dfs clients attempting connections to msdfs proxy */
1054 if (lp_host_msdfs() && (*lp_msdfs_proxy(snum) != '\0')) {
1055 DEBUG(3, ("refusing connection to dfs proxy share '%s' "
1056 "(pointing to %s)\n",
1057 service, lp_msdfs_proxy(snum)));
1058 *status = NT_STATUS_BAD_NETWORK_NAME;
1062 DEBUG(5, ("making a connection to 'normal' service %s\n", service));
1064 return make_connection_snum(sconn, snum, vuser,
1069 /****************************************************************************
1071 ****************************************************************************/
1073 void close_cnum(connection_struct *conn, uint16 vuid)
1075 file_close_conn(conn);
1077 if (!IS_IPC(conn)) {
1078 dptr_closecnum(conn);
1081 change_to_root_user();
1083 DEBUG(IS_IPC(conn)?3:1, ("%s (%s) closed connection to service %s\n",
1084 get_remote_machine_name(),
1085 tsocket_address_string(conn->sconn->remote_address,
1087 lp_servicename(SNUM(conn))));
1089 /* Call VFS disconnect hook */
1090 SMB_VFS_DISCONNECT(conn);
1092 yield_connection(conn, lp_servicename(SNUM(conn)));
1094 /* make sure we leave the directory available for unmount */
1095 vfs_ChDir(conn, "/");
1097 /* execute any "postexec = " line */
1098 if (*lp_postexec(SNUM(conn)) &&
1099 change_to_user(conn, vuid)) {
1100 char *cmd = talloc_sub_advanced(talloc_tos(),
1101 lp_servicename(SNUM(conn)),
1102 conn->session_info->unix_info->unix_name,
1104 conn->session_info->unix_token->gid,
1105 conn->session_info->unix_info->sanitized_username,
1106 conn->session_info->info->domain_name,
1107 lp_postexec(SNUM(conn)));
1110 change_to_root_user();
1113 change_to_root_user();
1114 /* execute any "root postexec = " line */
1115 if (*lp_rootpostexec(SNUM(conn))) {
1116 char *cmd = talloc_sub_advanced(talloc_tos(),
1117 lp_servicename(SNUM(conn)),
1118 conn->session_info->unix_info->unix_name,
1120 conn->session_info->unix_token->gid,
1121 conn->session_info->unix_info->sanitized_username,
1122 conn->session_info->info->domain_name,
1123 lp_rootpostexec(SNUM(conn)));