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 "../lib/tsocket/tsocket.h"
23 #include "smbd/smbd.h"
24 #include "smbd/globals.h"
25 #include "../librpc/gen_ndr/netlogon.h"
26 #include "../libcli/security/security.h"
27 #include "printing/pcap.h"
28 #include "passdb/lookup_sid.h"
30 #include "lib/param/loadparm.h"
32 extern userdom_struct current_user_info;
34 static bool canonicalize_connect_path(connection_struct *conn)
37 char *resolved_name = SMB_VFS_REALPATH(conn,conn->connectpath);
41 ret = set_conn_connectpath(conn,resolved_name);
42 SAFE_FREE(resolved_name);
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 /* Allocate for strlen + '\0' + possible leading '/' */
64 destname = (char *)SMB_MALLOC(strlen(connectpath) + 2);
70 *d++ = '/'; /* Always start with root. */
74 /* Eat multiple '/' */
78 if ((d > destname + 1) && (*s != '\0')) {
81 start_of_name_component = True;
85 if (start_of_name_component) {
86 if ((s[0] == '.') && (s[1] == '.') && (s[2] == '/' || s[2] == '\0')) {
87 /* Uh oh - "/../" or "/..\0" ! */
89 /* Go past the ../ or .. */
93 s += 2; /* Go past the .. */
96 /* If we just added a '/' - delete it */
97 if ((d > destname) && (*(d-1) == '/')) {
102 /* Are we at the start ? Can't go back further if so. */
104 *d++ = '/'; /* Can't delete root */
107 /* Go back one level... */
108 /* Decrement d first as d points to the *next* char to write into. */
109 for (d--; d > destname; d--) {
114 /* We're still at the start of a name component, just the previous one. */
116 } else if ((s[0] == '.') && ((s[1] == '\0') || s[1] == '/')) {
117 /* Component of pathname can't be "." only - skip the '.' . */
131 /* Get the size of the next MB character. */
132 next_codepoint(s,&siz);
153 start_of_name_component = false;
157 /* And must not end in '/' */
158 if (d > destname + 1 && (*(d-1) == '/')) {
162 DEBUG(10,("set_conn_connectpath: service %s, connectpath = %s\n",
163 lp_servicename(SNUM(conn)), destname ));
165 string_set(&conn->connectpath, destname);
170 /****************************************************************************
171 Load parameters specific to a connection/service.
172 ****************************************************************************/
174 bool set_current_service(connection_struct *conn, uint16 flags, bool do_chdir)
183 conn->lastused_count++;
188 vfs_ChDir(conn,conn->connectpath) != 0 &&
189 vfs_ChDir(conn,conn->origpath) != 0) {
190 DEBUG(((errno!=EACCES)?0:3),("chdir (%s) failed, reason: %s\n",
191 conn->connectpath, strerror(errno)));
195 if ((conn == last_conn) && (last_flags == flags)) {
202 /* Obey the client case sensitivity requests - only for clients that support it. */
203 switch (lp_casesensitive(snum)) {
206 /* We need this uglyness due to DOS/Win9x clients that lie about case insensitivity. */
207 enum remote_arch_types ra_type = get_remote_arch();
208 if ((ra_type != RA_SAMBA) && (ra_type != RA_CIFSFS)) {
209 /* Client can't support per-packet case sensitive pathnames. */
210 conn->case_sensitive = False;
212 conn->case_sensitive = !(flags & FLAG_CASELESS_PATHNAMES);
217 conn->case_sensitive = True;
220 conn->case_sensitive = False;
226 /****************************************************************************
227 do some basic sainity checks on the share.
228 This function modifies dev, ecode.
229 ****************************************************************************/
231 static NTSTATUS share_sanity_checks(const struct tsocket_address *remote_address,
238 raddr = tsocket_address_inet_addr_string(remote_address,
241 return NT_STATUS_NO_MEMORY;
244 if (!lp_snum_ok(snum) ||
245 !allow_access(lp_hostsdeny(snum), lp_hostsallow(snum),
247 return NT_STATUS_ACCESS_DENIED;
250 if (dev[0] == '?' || !dev[0]) {
251 if (lp_print_ok(snum)) {
252 fstrcpy(dev,"LPT1:");
253 } else if (strequal(lp_fstype(snum), "IPC")) {
262 if (lp_print_ok(snum)) {
263 if (!strequal(dev, "LPT1:")) {
264 return NT_STATUS_BAD_DEVICE_TYPE;
266 } else if (strequal(lp_fstype(snum), "IPC")) {
267 if (!strequal(dev, "IPC")) {
268 return NT_STATUS_BAD_DEVICE_TYPE;
270 } else if (!strequal(dev, "A:")) {
271 return NT_STATUS_BAD_DEVICE_TYPE;
274 /* Behave as a printer if we are supposed to */
275 if (lp_print_ok(snum) && (strcmp(dev, "A:") == 0)) {
276 fstrcpy(dev, "LPT1:");
283 * Go through lookup_name etc to find the force'd group.
285 * Create a new token from src_token, replacing the primary group sid with the
289 static NTSTATUS find_forced_group(bool force_user,
290 int snum, const char *username,
291 struct dom_sid *pgroup_sid,
294 NTSTATUS result = NT_STATUS_NO_SUCH_GROUP;
295 TALLOC_CTX *frame = talloc_stackframe();
296 struct dom_sid group_sid;
297 enum lsa_SidType type;
299 bool user_must_be_member = False;
302 groupname = talloc_strdup(talloc_tos(), lp_force_group(snum));
303 if (groupname == NULL) {
304 DEBUG(1, ("talloc_strdup failed\n"));
305 result = NT_STATUS_NO_MEMORY;
309 if (groupname[0] == '+') {
310 user_must_be_member = True;
314 groupname = talloc_string_sub(talloc_tos(), groupname,
315 "%S", lp_servicename(snum));
316 if (groupname == NULL) {
317 DEBUG(1, ("talloc_string_sub failed\n"));
318 result = NT_STATUS_NO_MEMORY;
322 if (!lookup_name_smbconf(talloc_tos(), groupname,
323 LOOKUP_NAME_ALL|LOOKUP_NAME_GROUP,
324 NULL, NULL, &group_sid, &type)) {
325 DEBUG(10, ("lookup_name_smbconf(%s) failed\n",
330 if ((type != SID_NAME_DOM_GRP) && (type != SID_NAME_ALIAS) &&
331 (type != SID_NAME_WKN_GRP)) {
332 DEBUG(10, ("%s is a %s, not a group\n", groupname,
333 sid_type_lookup(type)));
337 if (!sid_to_gid(&group_sid, &gid)) {
338 DEBUG(10, ("sid_to_gid(%s) for %s failed\n",
339 sid_string_dbg(&group_sid), groupname));
344 * If the user has been forced and the forced group starts with a '+',
345 * then we only set the group to be the forced group if the forced
346 * user is a member of that group. Otherwise, the meaning of the '+'
350 if (force_user && user_must_be_member) {
351 if (user_in_group_sid(username, &group_sid)) {
352 sid_copy(pgroup_sid, &group_sid);
354 DEBUG(3,("Forced group %s for member %s\n",
355 groupname, username));
357 DEBUG(0,("find_forced_group: forced user %s is not a member "
358 "of forced group %s. Disallowing access.\n",
359 username, groupname ));
360 result = NT_STATUS_MEMBER_NOT_IN_GROUP;
364 sid_copy(pgroup_sid, &group_sid);
366 DEBUG(3,("Forced group %s\n", groupname));
369 result = NT_STATUS_OK;
375 /****************************************************************************
376 Create an auth3_session_info structure for a connection_struct
377 ****************************************************************************/
379 static NTSTATUS create_connection_session_info(struct smbd_server_connection *sconn,
380 TALLOC_CTX *mem_ctx, int snum,
381 struct auth3_session_info *vuid_serverinfo,
383 struct auth3_session_info **presult)
385 if (lp_guest_only(snum)) {
386 return make_session_info_guest(mem_ctx, presult);
389 if (vuid_serverinfo != NULL) {
391 struct auth3_session_info *result;
394 * This is the normal security != share case where we have a
395 * valid vuid from the session setup. */
397 if (vuid_serverinfo->guest) {
398 if (!lp_guest_ok(snum)) {
399 DEBUG(2, ("guest user (from session setup) "
400 "not permitted to access this share "
401 "(%s)\n", lp_servicename(snum)));
402 return NT_STATUS_ACCESS_DENIED;
405 if (!user_ok_token(vuid_serverinfo->unix_name,
406 vuid_serverinfo->info3->base.domain.string,
407 vuid_serverinfo->security_token, snum)) {
408 DEBUG(2, ("user '%s' (from session setup) not "
409 "permitted to access this share "
411 vuid_serverinfo->unix_name,
412 lp_servicename(snum)));
413 return NT_STATUS_ACCESS_DENIED;
417 result = copy_session_info(mem_ctx, vuid_serverinfo);
418 if (result == NULL) {
419 return NT_STATUS_NO_MEMORY;
426 if (lp_security() == SEC_SHARE) {
431 /* add the sharename as a possible user name if we
432 are in share mode security */
434 add_session_user(sconn, lp_servicename(snum));
436 /* shall we let them in? */
438 if (!authorise_login(sconn, snum,user,password,&guest)) {
439 DEBUG( 2, ( "Invalid username/password for [%s]\n",
440 lp_servicename(snum)) );
441 return NT_STATUS_WRONG_PASSWORD;
444 return make_session_info_from_username(mem_ctx, user, guest,
448 DEBUG(0, ("invalid VUID (vuser) but not in security=share\n"));
449 return NT_STATUS_ACCESS_DENIED;
452 /****************************************************************************
453 set relavent user and group settings corresponding to force user/group
454 configuration for the given snum.
455 ****************************************************************************/
457 NTSTATUS set_conn_force_user_group(connection_struct *conn, int snum)
461 if (*lp_force_user(snum)) {
464 * Replace conn->session_info with a completely faked up one
465 * from the username we are forced into :-)
469 struct auth3_session_info *forced_serverinfo;
471 fuser = talloc_string_sub(conn, lp_force_user(snum), "%S",
472 lp_const_servicename(snum));
474 return NT_STATUS_NO_MEMORY;
477 status = make_session_info_from_username(
478 conn, fuser, conn->session_info->guest,
480 if (!NT_STATUS_IS_OK(status)) {
484 TALLOC_FREE(conn->session_info);
485 conn->session_info = forced_serverinfo;
487 conn->force_user = true;
488 DEBUG(3,("Forced user %s\n", fuser));
492 * If force group is true, then override
493 * any groupid stored for the connecting user.
496 if (*lp_force_group(snum)) {
498 status = find_forced_group(
499 conn->force_user, snum, conn->session_info->unix_name,
500 &conn->session_info->security_token->sids[1],
501 &conn->session_info->utok.gid);
503 if (!NT_STATUS_IS_OK(status)) {
508 * We need to cache this gid, to use within
509 * change_to_user() separately from the conn->session_info
510 * struct. We only use conn->session_info directly if
511 * "force_user" was set.
513 conn->force_group_gid = conn->session_info->utok.gid;
519 /****************************************************************************
520 Make a connection, given the snum to connect to, and the vuser of the
521 connecting user if appropriate.
522 ****************************************************************************/
524 connection_struct *make_connection_snum(struct smbd_server_connection *sconn,
525 int snum, user_struct *vuser,
530 connection_struct *conn = NULL;
531 struct smb_filename *smb_fname_cpath = NULL;
534 bool on_err_call_dis_hook = false;
535 bool claimed_connection = false;
542 *pstatus = share_sanity_checks(sconn->remote_address,
543 sconn->remote_hostname,
546 if (NT_STATUS_IS_ERR(*pstatus)) {
550 conn = conn_new(sconn);
552 DEBUG(0,("Couldn't find free connection.\n"));
553 *pstatus = NT_STATUS_INSUFFICIENT_RESOURCES;
557 conn->params->service = snum;
559 status = create_connection_session_info(sconn,
560 conn, snum, vuser ? vuser->session_info : NULL, password,
561 &conn->session_info);
563 if (!NT_STATUS_IS_OK(status)) {
564 DEBUG(1, ("create_connection_session_info failed: %s\n",
570 if ((lp_guest_only(snum)) || (lp_security() == SEC_SHARE)) {
571 conn->force_user = true;
574 add_session_user(sconn, conn->session_info->unix_name);
576 conn->num_files_open = 0;
577 conn->lastused = conn->lastused_count = time(NULL);
579 conn->printer = (strncmp(dev,"LPT",3) == 0);
580 conn->ipc = ( (strncmp(dev,"IPC",3) == 0) ||
581 ( lp_enable_asu_support() && strequal(dev,"ADMIN$")) );
583 /* Case options for the share. */
584 if (lp_casesensitive(snum) == Auto) {
585 /* We will be setting this per packet. Set to be case
586 * insensitive for now. */
587 conn->case_sensitive = False;
589 conn->case_sensitive = (bool)lp_casesensitive(snum);
592 conn->case_preserve = lp_preservecase(snum);
593 conn->short_case_preserve = lp_shortpreservecase(snum);
595 conn->encrypt_level = lp_smb_encrypt(snum);
597 conn->veto_list = NULL;
598 conn->hide_list = NULL;
599 conn->veto_oplock_list = NULL;
600 conn->aio_write_behind_list = NULL;
602 conn->read_only = lp_readonly(SNUM(conn));
604 status = set_conn_force_user_group(conn, snum);
605 if (!NT_STATUS_IS_OK(status)) {
611 conn->vuid = (vuser != NULL) ? vuser->vuid : UID_FIELD_INVALID;
614 char *s = talloc_sub_advanced(talloc_tos(),
615 lp_servicename(SNUM(conn)),
616 conn->session_info->unix_name,
618 conn->session_info->utok.gid,
619 conn->session_info->sanitized_username,
620 conn->session_info->info3->base.domain.string,
623 *pstatus = NT_STATUS_NO_MEMORY;
627 if (!set_conn_connectpath(conn,s)) {
629 *pstatus = NT_STATUS_NO_MEMORY;
632 DEBUG(3,("Connect path is '%s' for service [%s]\n",s,
633 lp_servicename(snum)));
638 * New code to check if there's a share security descripter
639 * added from NT server manager. This is done after the
640 * smb.conf checks are done as we need a uid and token. JRA.
644 share_access_check(conn->session_info->security_token,
645 lp_servicename(snum), MAXIMUM_ALLOWED_ACCESS,
646 &conn->share_access);
648 if ((conn->share_access & FILE_WRITE_DATA) == 0) {
649 if ((conn->share_access & FILE_READ_DATA) == 0) {
650 /* No access, read or write. */
651 DEBUG(0,("make_connection: connection to %s "
652 "denied due to security "
654 lp_servicename(snum)));
655 *pstatus = NT_STATUS_ACCESS_DENIED;
658 conn->read_only = True;
661 /* Initialise VFS function pointers */
663 if (!smbd_vfs_init(conn)) {
664 DEBUG(0, ("vfs_init failed for service %s\n",
665 lp_servicename(snum)));
666 *pstatus = NT_STATUS_BAD_NETWORK_NAME;
670 /* ROOT Activities: */
671 /* explicitly check widelinks here so that we can correctly warn
673 widelinks_warning(snum);
676 * Enforce the max connections parameter.
679 if ((lp_max_connections(snum) > 0)
680 && (count_current_connections(lp_servicename(SNUM(conn)), True) >=
681 lp_max_connections(snum))) {
683 DEBUG(1, ("Max connections (%d) exceeded for %s\n",
684 lp_max_connections(snum), lp_servicename(snum)));
685 *pstatus = NT_STATUS_INSUFFICIENT_RESOURCES;
690 * Get us an entry in the connections db
692 if (!claim_connection(conn, lp_servicename(snum))) {
693 DEBUG(1, ("Could not store connections entry\n"));
694 *pstatus = NT_STATUS_INTERNAL_DB_ERROR;
697 claimed_connection = true;
699 /* Invoke VFS make connection hook - this must be the first
700 filesystem operation that we do. */
702 if (SMB_VFS_CONNECT(conn, lp_servicename(snum),
703 conn->session_info->unix_name) < 0) {
704 DEBUG(0,("make_connection: VFS make connection failed!\n"));
705 *pstatus = NT_STATUS_UNSUCCESSFUL;
709 /* Any error exit after here needs to call the disconnect hook. */
710 on_err_call_dis_hook = true;
712 if ((!conn->printer) && (!conn->ipc)) {
713 conn->notify_ctx = notify_init(conn,
714 sconn_server_id(sconn),
716 server_event_context(),
721 * Fix compatibility issue pointed out by Volker.
722 * We pass the conn->connectpath to the preexec
723 * scripts as a parameter, so attempt to canonicalize
724 * it here before calling the preexec scripts.
725 * We ignore errors here, as it is possible that
726 * the conn->connectpath doesn't exist yet and
727 * the preexec scripts will create them.
730 (void)canonicalize_connect_path(conn);
732 /* Preexecs are done here as they might make the dir we are to ChDir
734 /* execute any "root preexec = " line */
735 if (*lp_rootpreexec(snum)) {
736 char *cmd = talloc_sub_advanced(talloc_tos(),
737 lp_servicename(SNUM(conn)),
738 conn->session_info->unix_name,
740 conn->session_info->utok.gid,
741 conn->session_info->sanitized_username,
742 conn->session_info->info3->base.domain.string,
743 lp_rootpreexec(snum));
744 DEBUG(5,("cmd=%s\n",cmd));
745 ret = smbrun(cmd,NULL);
747 if (ret != 0 && lp_rootpreexec_close(snum)) {
748 DEBUG(1,("root preexec gave %d - failing "
749 "connection\n", ret));
750 *pstatus = NT_STATUS_ACCESS_DENIED;
755 /* USER Activites: */
756 if (!change_to_user(conn, conn->vuid)) {
757 /* No point continuing if they fail the basic checks */
758 DEBUG(0,("Can't become connected user!\n"));
759 *pstatus = NT_STATUS_LOGON_FAILURE;
766 /* Remember that a different vuid can connect later without these
769 /* Preexecs are done here as they might make the dir we are to ChDir
772 /* execute any "preexec = " line */
773 if (*lp_preexec(snum)) {
774 char *cmd = talloc_sub_advanced(talloc_tos(),
775 lp_servicename(SNUM(conn)),
776 conn->session_info->unix_name,
778 conn->session_info->utok.gid,
779 conn->session_info->sanitized_username,
780 conn->session_info->info3->base.domain.string,
782 ret = smbrun(cmd,NULL);
784 if (ret != 0 && lp_preexec_close(snum)) {
785 DEBUG(1,("preexec gave %d - failing connection\n",
787 *pstatus = NT_STATUS_ACCESS_DENIED;
792 #ifdef WITH_FAKE_KASERVER
793 if (lp_afs_share(snum)) {
799 * we've finished with the user stuff - go back to root
800 * so the SMB_VFS_STAT call will only fail on path errors,
801 * not permission problems.
803 change_to_root_user();
804 /* ROOT Activites: */
807 * If widelinks are disallowed we need to canonicalise the connect
808 * path here to ensure we don't have any symlinks in the
809 * connectpath. We will be checking all paths on this connection are
810 * below this directory. We must do this after the VFS init as we
811 * depend on the realpath() pointer in the vfs table. JRA.
813 if (!lp_widelinks(snum)) {
814 if (!canonicalize_connect_path(conn)) {
815 DEBUG(0, ("canonicalize_connect_path failed "
816 "for service %s, path %s\n",
817 lp_servicename(snum),
819 *pstatus = NT_STATUS_BAD_NETWORK_NAME;
824 /* Add veto/hide lists */
825 if (!IS_IPC(conn) && !IS_PRINT(conn)) {
826 set_namearray( &conn->veto_list, lp_veto_files(snum));
827 set_namearray( &conn->hide_list, lp_hide_files(snum));
828 set_namearray( &conn->veto_oplock_list, lp_veto_oplocks(snum));
829 set_namearray( &conn->aio_write_behind_list,
830 lp_aio_write_behind(snum));
832 status = create_synthetic_smb_fname(talloc_tos(), conn->connectpath,
833 NULL, NULL, &smb_fname_cpath);
834 if (!NT_STATUS_IS_OK(status)) {
839 /* win2000 does not check the permissions on the directory
840 during the tree connect, instead relying on permission
841 check during individual operations. To match this behaviour
842 I have disabled this chdir check (tridge) */
843 /* the alternative is just to check the directory exists */
845 if ((ret = SMB_VFS_STAT(conn, smb_fname_cpath)) != 0 ||
846 !S_ISDIR(smb_fname_cpath->st.st_ex_mode)) {
847 if (ret == 0 && !S_ISDIR(smb_fname_cpath->st.st_ex_mode)) {
848 DEBUG(0,("'%s' is not a directory, when connecting to "
849 "[%s]\n", conn->connectpath,
850 lp_servicename(snum)));
852 DEBUG(0,("'%s' does not exist or permission denied "
853 "when connecting to [%s] Error was %s\n",
854 conn->connectpath, lp_servicename(snum),
857 *pstatus = NT_STATUS_BAD_NETWORK_NAME;
860 conn->base_share_dev = smb_fname_cpath->st.st_ex_dev;
862 string_set(&conn->origpath,conn->connectpath);
864 /* Figure out the characteristics of the underlying filesystem. This
865 * assumes that all the filesystem mounted withing a share path have
866 * the same characteristics, which is likely but not guaranteed.
869 conn->fs_capabilities = SMB_VFS_FS_CAPABILITIES(conn, &conn->ts_res);
872 * Print out the 'connected as' stuff here as we need
873 * to know the effective uid and gid we will be using
874 * (at least initially).
877 if( DEBUGLVL( IS_IPC(conn) ? 3 : 1 ) ) {
878 dbgtext( "%s (%s) ", get_remote_machine_name(),
879 tsocket_address_string(conn->sconn->remote_address,
881 dbgtext( "%s", srv_is_signing_active(sconn) ? "signed " : "");
882 dbgtext( "connect to service %s ", lp_servicename(snum) );
883 dbgtext( "initially as user %s ",
884 conn->session_info->unix_name );
885 dbgtext( "(uid=%d, gid=%d) ", (int)effuid, (int)effgid );
886 dbgtext( "(pid %d)\n", (int)sys_getpid() );
892 TALLOC_FREE(smb_fname_cpath);
893 /* We must exit this function as root. */
894 if (geteuid() != 0) {
895 change_to_root_user();
897 if (on_err_call_dis_hook) {
898 /* Call VFS disconnect hook */
899 SMB_VFS_DISCONNECT(conn);
901 if (claimed_connection) {
902 yield_connection(conn, lp_servicename(snum));
910 /****************************************************************************
911 Make a connection to a service.
914 ****************************************************************************/
916 connection_struct *make_connection(struct smbd_server_connection *sconn,
917 const char *service_in, DATA_BLOB password,
918 const char *pdev, uint16 vuid,
922 user_struct *vuser = NULL;
923 char *service = NULL;
929 /* This must ONLY BE CALLED AS ROOT. As it exits this function as
931 if (!non_root_mode() && (euid = geteuid()) != 0) {
932 DEBUG(0,("make_connection: PANIC ERROR. Called as nonroot "
933 "(%u)\n", (unsigned int)euid ));
934 smb_panic("make_connection: PANIC ERROR. Called as nonroot\n");
937 if (conn_num_open(sconn) > 2047) {
938 *status = NT_STATUS_INSUFF_SERVER_RESOURCES;
942 if(lp_security() != SEC_SHARE) {
943 vuser = get_valid_user_struct(sconn, vuid);
945 DEBUG(1,("make_connection: refusing to connect with "
946 "no session setup\n"));
947 *status = NT_STATUS_ACCESS_DENIED;
952 /* Logic to try and connect to the correct [homes] share, preferably
953 without too many getpwnam() lookups. This is particulary nasty for
954 winbind usernames, where the share name isn't the same as unix
957 The snum of the homes share is stored on the vuser at session setup
961 if (strequal(service_in,HOMES_NAME)) {
962 if(lp_security() != SEC_SHARE) {
963 DATA_BLOB no_pw = data_blob_null;
964 if (vuser->homes_snum == -1) {
965 DEBUG(2, ("[homes] share not available for "
966 "this user because it was not found "
967 "or created at session setup "
969 *status = NT_STATUS_BAD_NETWORK_NAME;
972 DEBUG(5, ("making a connection to [homes] service "
973 "created at session setup time\n"));
974 return make_connection_snum(sconn,
979 /* Security = share. Try with
980 * current_user_info.smb_name as the username. */
981 if (*current_user_info.smb_name) {
982 char *unix_username = NULL;
983 (void)map_username(talloc_tos(),
984 current_user_info.smb_name,
986 snum = find_service(talloc_tos(),
989 if (!unix_username) {
990 *status = NT_STATUS_NO_MEMORY;
995 DEBUG(5, ("making a connection to 'homes' "
996 "service %s based on "
997 "security=share\n", service_in));
998 return make_connection_snum(sconn,
1004 } else if ((lp_security() != SEC_SHARE) && (vuser->homes_snum != -1)
1005 && strequal(service_in,
1006 lp_servicename(vuser->homes_snum))) {
1007 DATA_BLOB no_pw = data_blob_null;
1008 DEBUG(5, ("making a connection to 'homes' service [%s] "
1009 "created at session setup time\n", service_in));
1010 return make_connection_snum(sconn,
1016 service = talloc_strdup(talloc_tos(), service_in);
1018 *status = NT_STATUS_NO_MEMORY;
1022 strlower_m(service);
1024 snum = find_service(talloc_tos(), service, &service);
1026 *status = NT_STATUS_NO_MEMORY;
1031 if (strequal(service,"IPC$") ||
1032 (lp_enable_asu_support() && strequal(service,"ADMIN$"))) {
1033 DEBUG(3,("refusing IPC connection to %s\n", service));
1034 *status = NT_STATUS_ACCESS_DENIED;
1038 DEBUG(3,("%s (%s) couldn't find service %s\n",
1039 get_remote_machine_name(),
1040 tsocket_address_string(
1041 sconn->remote_address, talloc_tos()),
1043 *status = NT_STATUS_BAD_NETWORK_NAME;
1047 /* Handle non-Dfs clients attempting connections to msdfs proxy */
1048 if (lp_host_msdfs() && (*lp_msdfs_proxy(snum) != '\0')) {
1049 DEBUG(3, ("refusing connection to dfs proxy share '%s' "
1050 "(pointing to %s)\n",
1051 service, lp_msdfs_proxy(snum)));
1052 *status = NT_STATUS_BAD_NETWORK_NAME;
1056 DEBUG(5, ("making a connection to 'normal' service %s\n", service));
1058 return make_connection_snum(sconn, snum, vuser,
1063 /****************************************************************************
1065 ****************************************************************************/
1067 void close_cnum(connection_struct *conn, uint16 vuid)
1069 file_close_conn(conn);
1071 if (!IS_IPC(conn)) {
1072 dptr_closecnum(conn);
1075 change_to_root_user();
1077 DEBUG(IS_IPC(conn)?3:1, ("%s (%s) closed connection to service %s\n",
1078 get_remote_machine_name(),
1079 tsocket_address_string(conn->sconn->remote_address,
1081 lp_servicename(SNUM(conn))));
1083 /* Call VFS disconnect hook */
1084 SMB_VFS_DISCONNECT(conn);
1086 yield_connection(conn, lp_servicename(SNUM(conn)));
1088 /* make sure we leave the directory available for unmount */
1089 vfs_ChDir(conn, "/");
1091 /* execute any "postexec = " line */
1092 if (*lp_postexec(SNUM(conn)) &&
1093 change_to_user(conn, vuid)) {
1094 char *cmd = talloc_sub_advanced(talloc_tos(),
1095 lp_servicename(SNUM(conn)),
1096 conn->session_info->unix_name,
1098 conn->session_info->utok.gid,
1099 conn->session_info->sanitized_username,
1100 conn->session_info->info3->base.domain.string,
1101 lp_postexec(SNUM(conn)));
1104 change_to_root_user();
1107 change_to_root_user();
1108 /* execute any "root postexec = " line */
1109 if (*lp_rootpostexec(SNUM(conn))) {
1110 char *cmd = talloc_sub_advanced(talloc_tos(),
1111 lp_servicename(SNUM(conn)),
1112 conn->session_info->unix_name,
1114 conn->session_info->utok.gid,
1115 conn->session_info->sanitized_username,
1116 conn->session_info->info3->base.domain.string,
1117 lp_rootpostexec(SNUM(conn)));