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/>.
22 extern userdom_struct current_user_info;
24 static bool canonicalize_connect_path(connection_struct *conn)
26 #ifdef REALPATH_TAKES_NULL
28 char *resolved_name = SMB_VFS_REALPATH(conn,conn->connectpath,NULL);
32 ret = set_conn_connectpath(conn,resolved_name);
33 SAFE_FREE(resolved_name);
36 char resolved_name_buf[PATH_MAX+1];
37 char *resolved_name = SMB_VFS_REALPATH(conn,conn->connectpath,resolved_name_buf);
41 return set_conn_connectpath(conn,resolved_name);
42 #endif /* REALPATH_TAKES_NULL */
45 /****************************************************************************
46 Ensure when setting connectpath it is a canonicalized (no ./ // or ../)
47 absolute path stating in / and not ending in /.
48 Observent people will notice a similarity between this and check_path_syntax :-).
49 ****************************************************************************/
51 bool set_conn_connectpath(connection_struct *conn, const char *connectpath)
55 const char *s = connectpath;
56 bool start_of_name_component = true;
58 destname = SMB_STRDUP(connectpath);
64 *d++ = '/'; /* Always start with root. */
68 /* Eat multiple '/' */
72 if ((d > destname + 1) && (*s != '\0')) {
75 start_of_name_component = True;
79 if (start_of_name_component) {
80 if ((s[0] == '.') && (s[1] == '.') && (s[2] == '/' || s[2] == '\0')) {
81 /* Uh oh - "/../" or "/..\0" ! */
83 /* Go past the ../ or .. */
87 s += 2; /* Go past the .. */
90 /* If we just added a '/' - delete it */
91 if ((d > destname) && (*(d-1) == '/')) {
96 /* Are we at the start ? Can't go back further if so. */
98 *d++ = '/'; /* Can't delete root */
101 /* Go back one level... */
102 /* Decrement d first as d points to the *next* char to write into. */
103 for (d--; d > destname; d--) {
108 /* We're still at the start of a name component, just the previous one. */
110 } else if ((s[0] == '.') && ((s[1] == '\0') || s[1] == '/')) {
111 /* Component of pathname can't be "." only - skip the '.' . */
125 /* Get the size of the next MB character. */
126 next_codepoint(s,&siz);
147 start_of_name_component = false;
151 /* And must not end in '/' */
152 if (d > destname + 1 && (*(d-1) == '/')) {
156 DEBUG(10,("set_conn_connectpath: service %s, connectpath = %s\n",
157 lp_servicename(SNUM(conn)), destname ));
159 string_set(&conn->connectpath, destname);
164 /****************************************************************************
165 Load parameters specific to a connection/service.
166 ****************************************************************************/
168 bool set_current_service(connection_struct *conn, uint16 flags, bool do_chdir)
170 static connection_struct *last_conn;
171 static uint16 last_flags;
179 conn->lastused_count++;
184 vfs_ChDir(conn,conn->connectpath) != 0 &&
185 vfs_ChDir(conn,conn->origpath) != 0) {
186 DEBUG(0,("chdir (%s) failed\n",
191 if ((conn == last_conn) && (last_flags == flags)) {
198 /* Obey the client case sensitivity requests - only for clients that support it. */
199 switch (lp_casesensitive(snum)) {
202 /* We need this uglyness due to DOS/Win9x clients that lie about case insensitivity. */
203 enum remote_arch_types ra_type = get_remote_arch();
204 if ((ra_type != RA_SAMBA) && (ra_type != RA_CIFSFS)) {
205 /* Client can't support per-packet case sensitive pathnames. */
206 conn->case_sensitive = False;
208 conn->case_sensitive = !(flags & FLAG_CASELESS_PATHNAMES);
213 conn->case_sensitive = True;
216 conn->case_sensitive = False;
222 static int load_registry_service(const char *servicename)
224 struct registry_key *key;
230 struct registry_value *value;
234 if (!lp_registry_shares()) {
238 if (strequal(servicename, GLOBAL_NAME)) {
242 if (asprintf(&path, "%s\\%s", KEY_SMBCONF, servicename) == -1) {
246 err = reg_open_path(NULL, path, REG_KEY_READ, get_root_nt_token(),
250 if (!W_ERROR_IS_OK(err)) {
254 res = lp_add_service(servicename, -1);
260 W_ERROR_IS_OK(reg_enumvalue(key, key, i, &value_name, &value));
262 switch (value->type) {
265 if (asprintf(&tmp, "%d", value->v.dword) == -1) {
268 lp_do_parameter(res, value_name, tmp);
273 lp_do_parameter(res, value_name, value->v.sz.str);
277 /* Ignore all the rest */
281 TALLOC_FREE(value_name);
291 void load_registry_shares(void)
293 struct registry_key *key;
298 DEBUG(8, ("load_registry_shares()\n"));
299 if (!lp_registry_shares()) {
303 err = reg_open_path(NULL, KEY_SMBCONF, REG_KEY_READ,
304 get_root_nt_token(), &key);
305 if (!(W_ERROR_IS_OK(err))) {
309 for (i=0; W_ERROR_IS_OK(reg_enumkey(key, key, i, &name, NULL)); i++) {
310 load_registry_service(name);
318 /****************************************************************************
319 Add a home service. Returns the new service number or -1 if fail.
320 ****************************************************************************/
322 int add_home_service(const char *service, const char *username, const char *homedir)
326 if (!service || !homedir)
329 if ((iHomeService = lp_servicenumber(HOMES_NAME)) < 0) {
330 if ((iHomeService = load_registry_service(HOMES_NAME)) < 0) {
336 * If this is a winbindd provided username, remove
337 * the domain component before adding the service.
338 * Log a warning if the "path=" parameter does not
339 * include any macros.
343 const char *p = strchr(service,*lp_winbind_separator());
345 /* We only want the 'user' part of the string */
351 if (!lp_add_home(service, iHomeService, username, homedir)) {
355 return lp_servicenumber(service);
360 * Find a service entry.
362 * @param service is modified (to canonical form??)
365 int find_service(fstring service)
369 all_string_sub(service,"\\","/",0);
371 iService = lp_servicenumber(service);
373 /* now handle the special case of a home directory */
375 char *phome_dir = get_user_home_dir(talloc_tos(), service);
379 * Try mapping the servicename, it may
380 * be a Windows to unix mapped user name.
382 if(map_username(service))
383 phome_dir = get_user_home_dir(
384 talloc_tos(), service);
387 DEBUG(3,("checking for home directory %s gave %s\n",service,
388 phome_dir?phome_dir:"(NULL)"));
390 iService = add_home_service(service,service /* 'username' */, phome_dir);
393 /* If we still don't have a service, attempt to add it as a printer. */
397 if ((iPrinterService = lp_servicenumber(PRINTERS_NAME)) < 0) {
398 iPrinterService = load_registry_service(PRINTERS_NAME);
400 if (iPrinterService) {
401 DEBUG(3,("checking whether %s is a valid printer name...\n", service));
402 if (pcap_printername_ok(service)) {
403 DEBUG(3,("%s is a valid printer name\n", service));
404 DEBUG(3,("adding %s as a printer service\n", service));
405 lp_add_printer(service, iPrinterService);
406 iService = lp_servicenumber(service);
408 DEBUG(0,("failed to add %s as a printer service!\n", service));
411 DEBUG(3,("%s is not a valid printer name\n", service));
416 /* Check for default vfs service? Unsure whether to implement this */
421 iService = load_registry_service(service);
424 /* Is it a usershare service ? */
425 if (iService < 0 && *lp_usershare_path()) {
426 /* Ensure the name is canonicalized. */
428 iService = load_usershare_service(service);
431 /* just possibly it's a default service? */
433 char *pdefservice = lp_defaultservice();
434 if (pdefservice && *pdefservice && !strequal(pdefservice,service) && !strstr_m(service,"..")) {
436 * We need to do a local copy here as lp_defaultservice()
437 * returns one of the rotating lp_string buffers that
438 * could get overwritten by the recursive find_service() call
439 * below. Fix from Josef Hinteregger <joehtg@joehtg.co.at>.
441 char *defservice = SMB_STRDUP(pdefservice);
447 /* Disallow anything except explicit share names. */
448 if (strequal(defservice,HOMES_NAME) ||
449 strequal(defservice, PRINTERS_NAME) ||
450 strequal(defservice, "IPC$")) {
451 SAFE_FREE(defservice);
455 iService = find_service(defservice);
457 all_string_sub(service, "_","/",0);
458 iService = lp_add_service(service, iService);
460 SAFE_FREE(defservice);
465 if (!VALID_SNUM(iService)) {
466 DEBUG(0,("Invalid snum %d for %s\n",iService, service));
474 DEBUG(3,("find_service() failed to find service %s\n", service));
480 /****************************************************************************
481 do some basic sainity checks on the share.
482 This function modifies dev, ecode.
483 ****************************************************************************/
485 static NTSTATUS share_sanity_checks(int snum, fstring dev)
488 if (!lp_snum_ok(snum) ||
489 !check_access(smbd_server_fd(),
490 lp_hostsallow(snum), lp_hostsdeny(snum))) {
491 return NT_STATUS_ACCESS_DENIED;
494 if (dev[0] == '?' || !dev[0]) {
495 if (lp_print_ok(snum)) {
496 fstrcpy(dev,"LPT1:");
497 } else if (strequal(lp_fstype(snum), "IPC")) {
506 if (lp_print_ok(snum)) {
507 if (!strequal(dev, "LPT1:")) {
508 return NT_STATUS_BAD_DEVICE_TYPE;
510 } else if (strequal(lp_fstype(snum), "IPC")) {
511 if (!strequal(dev, "IPC")) {
512 return NT_STATUS_BAD_DEVICE_TYPE;
514 } else if (!strequal(dev, "A:")) {
515 return NT_STATUS_BAD_DEVICE_TYPE;
518 /* Behave as a printer if we are supposed to */
519 if (lp_print_ok(snum) && (strcmp(dev, "A:") == 0)) {
520 fstrcpy(dev, "LPT1:");
527 * Go through lookup_name etc to find the force'd group.
529 * Create a new token from src_token, replacing the primary group sid with the
533 static NTSTATUS find_forced_group(bool force_user,
534 int snum, const char *username,
538 NTSTATUS result = NT_STATUS_NO_SUCH_GROUP;
539 TALLOC_CTX *frame = talloc_stackframe();
541 enum lsa_SidType type;
543 bool user_must_be_member = False;
546 groupname = talloc_strdup(talloc_tos(), lp_force_group(snum));
547 if (groupname == NULL) {
548 DEBUG(1, ("talloc_strdup failed\n"));
549 result = NT_STATUS_NO_MEMORY;
553 if (groupname[0] == '+') {
554 user_must_be_member = True;
558 groupname = talloc_string_sub(talloc_tos(), groupname,
559 "%S", lp_servicename(snum));
560 if (groupname == NULL) {
561 DEBUG(1, ("talloc_string_sub failed\n"));
562 result = NT_STATUS_NO_MEMORY;
566 if (!lookup_name_smbconf(talloc_tos(), groupname,
567 LOOKUP_NAME_ALL|LOOKUP_NAME_GROUP,
568 NULL, NULL, &group_sid, &type)) {
569 DEBUG(10, ("lookup_name_smbconf(%s) failed\n",
574 if ((type != SID_NAME_DOM_GRP) && (type != SID_NAME_ALIAS) &&
575 (type != SID_NAME_WKN_GRP)) {
576 DEBUG(10, ("%s is a %s, not a group\n", groupname,
577 sid_type_lookup(type)));
581 if (!sid_to_gid(&group_sid, &gid)) {
582 DEBUG(10, ("sid_to_gid(%s) for %s failed\n",
583 sid_string_dbg(&group_sid), groupname));
588 * If the user has been forced and the forced group starts with a '+',
589 * then we only set the group to be the forced group if the forced
590 * user is a member of that group. Otherwise, the meaning of the '+'
594 if (force_user && user_must_be_member) {
595 if (user_in_group_sid(username, &group_sid)) {
596 sid_copy(pgroup_sid, &group_sid);
598 DEBUG(3,("Forced group %s for member %s\n",
599 groupname, username));
601 DEBUG(0,("find_forced_group: forced user %s is not a member "
602 "of forced group %s. Disallowing access.\n",
603 username, groupname ));
604 result = NT_STATUS_MEMBER_NOT_IN_GROUP;
608 sid_copy(pgroup_sid, &group_sid);
610 DEBUG(3,("Forced group %s\n", groupname));
613 result = NT_STATUS_OK;
619 /****************************************************************************
620 Create an auth_serversupplied_info structure for a connection_struct
621 ****************************************************************************/
623 static NTSTATUS create_connection_server_info(TALLOC_CTX *mem_ctx, int snum,
624 struct auth_serversupplied_info *vuid_serverinfo,
626 struct auth_serversupplied_info **presult)
628 if (lp_guest_only(snum)) {
629 return make_server_info_guest(mem_ctx, presult);
632 if (vuid_serverinfo != NULL) {
634 struct auth_serversupplied_info *result;
637 * This is the normal security != share case where we have a
638 * valid vuid from the session setup. */
640 if (vuid_serverinfo->guest) {
641 if (!lp_guest_ok(snum)) {
642 DEBUG(2, ("guest user (from session setup) "
643 "not permitted to access this share "
644 "(%s)\n", lp_servicename(snum)));
645 return NT_STATUS_ACCESS_DENIED;
648 if (!user_ok_token(vuid_serverinfo->unix_name,
649 vuid_serverinfo->ptok, snum)) {
650 DEBUG(2, ("user '%s' (from session setup) not "
651 "permitted to access this share "
653 vuid_serverinfo->unix_name,
654 lp_servicename(snum)));
655 return NT_STATUS_ACCESS_DENIED;
659 result = copy_serverinfo(mem_ctx, vuid_serverinfo);
660 if (result == NULL) {
661 return NT_STATUS_NO_MEMORY;
668 if (lp_security() == SEC_SHARE) {
673 /* add the sharename as a possible user name if we
674 are in share mode security */
676 add_session_user(lp_servicename(snum));
678 /* shall we let them in? */
680 if (!authorise_login(snum,user,password,&guest)) {
681 DEBUG( 2, ( "Invalid username/password for [%s]\n",
682 lp_servicename(snum)) );
683 return NT_STATUS_WRONG_PASSWORD;
686 return make_serverinfo_from_username(mem_ctx, user, guest,
690 DEBUG(0, ("invalid VUID (vuser) but not in security=share\n"));
691 return NT_STATUS_ACCESS_DENIED;
695 /****************************************************************************
696 Make a connection, given the snum to connect to, and the vuser of the
697 connecting user if appropriate.
698 ****************************************************************************/
700 static connection_struct *make_connection_snum(int snum, user_struct *vuser,
705 connection_struct *conn;
709 char addr[INET6_ADDRSTRLEN];
710 bool on_err_call_dis_hook = false;
714 SET_STAT_INVALID(st);
716 if (NT_STATUS_IS_ERR(*pstatus = share_sanity_checks(snum, dev))) {
722 DEBUG(0,("Couldn't find free connection.\n"));
723 *pstatus = NT_STATUS_INSUFFICIENT_RESOURCES;
727 conn->params->service = snum;
729 status = create_connection_server_info(
730 conn, snum, vuser ? vuser->server_info : NULL, password,
733 if (!NT_STATUS_IS_OK(status)) {
734 DEBUG(0, ("create_connection_server_info failed: %s\n",
741 if ((lp_guest_only(snum)) || (lp_security() == SEC_SHARE)) {
742 conn->force_user = true;
745 add_session_user(conn->server_info->unix_name);
747 safe_strcpy(conn->client_address,
748 client_addr(get_client_fd(),addr,sizeof(addr)),
749 sizeof(conn->client_address)-1);
750 conn->num_files_open = 0;
751 conn->lastused = conn->lastused_count = time(NULL);
753 conn->printer = (strncmp(dev,"LPT",3) == 0);
754 conn->ipc = ( (strncmp(dev,"IPC",3) == 0) ||
755 ( lp_enable_asu_support() && strequal(dev,"ADMIN$")) );
758 /* Case options for the share. */
759 if (lp_casesensitive(snum) == Auto) {
760 /* We will be setting this per packet. Set to be case
761 * insensitive for now. */
762 conn->case_sensitive = False;
764 conn->case_sensitive = (bool)lp_casesensitive(snum);
767 conn->case_preserve = lp_preservecase(snum);
768 conn->short_case_preserve = lp_shortpreservecase(snum);
770 conn->encrypt_level = lp_smb_encrypt(snum);
772 conn->veto_list = NULL;
773 conn->hide_list = NULL;
774 conn->veto_oplock_list = NULL;
775 conn->aio_write_behind_list = NULL;
776 string_set(&conn->dirpath,"");
778 conn->read_only = lp_readonly(SNUM(conn));
779 conn->admin_user = False;
781 if (*lp_force_user(snum)) {
784 * Replace conn->server_info with a completely faked up one
785 * from the username we are forced into :-)
789 struct auth_serversupplied_info *forced_serverinfo;
791 fuser = talloc_string_sub(conn, lp_force_user(snum), "%S",
792 lp_servicename(snum));
795 *pstatus = NT_STATUS_NO_MEMORY;
799 status = make_serverinfo_from_username(
800 conn, fuser, conn->server_info->guest,
802 if (!NT_STATUS_IS_OK(status)) {
808 TALLOC_FREE(conn->server_info);
809 conn->server_info = forced_serverinfo;
811 conn->force_user = True;
812 DEBUG(3,("Forced user %s\n", fuser));
816 * If force group is true, then override
817 * any groupid stored for the connecting user.
820 if (*lp_force_group(snum)) {
822 status = find_forced_group(
823 conn->force_user, snum, conn->server_info->unix_name,
824 &conn->server_info->ptok->user_sids[1],
825 &conn->server_info->gid);
827 if (!NT_STATUS_IS_OK(status)) {
834 conn->vuid = (vuser != NULL) ? vuser->vuid : UID_FIELD_INVALID;
837 char *s = talloc_sub_advanced(talloc_tos(),
838 lp_servicename(SNUM(conn)),
839 conn->server_info->unix_name,
841 conn->server_info->gid,
842 get_current_username(),
843 current_user_info.domain,
847 *pstatus = NT_STATUS_NO_MEMORY;
851 if (!set_conn_connectpath(conn,s)) {
854 *pstatus = NT_STATUS_NO_MEMORY;
857 DEBUG(3,("Connect path is '%s' for service [%s]\n",s,
858 lp_servicename(snum)));
863 * New code to check if there's a share security descripter
864 * added from NT server manager. This is done after the
865 * smb.conf checks are done as we need a uid and token. JRA.
870 bool can_write = False;
872 can_write = share_access_check(conn->server_info->ptok,
873 lp_servicename(snum),
877 if (!share_access_check(conn->server_info->ptok,
878 lp_servicename(snum),
880 /* No access, read or write. */
881 DEBUG(0,("make_connection: connection to %s "
882 "denied due to security "
884 lp_servicename(snum)));
886 *pstatus = NT_STATUS_ACCESS_DENIED;
889 conn->read_only = True;
893 /* Initialise VFS function pointers */
895 if (!smbd_vfs_init(conn)) {
896 DEBUG(0, ("vfs_init failed for service %s\n",
897 lp_servicename(snum)));
899 *pstatus = NT_STATUS_BAD_NETWORK_NAME;
904 * If widelinks are disallowed we need to canonicalise the connect
905 * path here to ensure we don't have any symlinks in the
906 * connectpath. We will be checking all paths on this connection are
907 * below this directory. We must do this after the VFS init as we
908 * depend on the realpath() pointer in the vfs table. JRA.
910 if (!lp_widelinks(snum)) {
911 if (!canonicalize_connect_path(conn)) {
912 DEBUG(0, ("canonicalize_connect_path failed "
913 "for service %s, path %s\n",
914 lp_servicename(snum),
917 *pstatus = NT_STATUS_BAD_NETWORK_NAME;
922 if ((!conn->printer) && (!conn->ipc)) {
923 conn->notify_ctx = notify_init(conn, server_id_self(),
924 smbd_messaging_context(),
925 smbd_event_context(),
929 /* ROOT Activities: */
931 * Enforce the max connections parameter.
934 if ((lp_max_connections(snum) > 0)
935 && (count_current_connections(lp_servicename(SNUM(conn)), True) >=
936 lp_max_connections(snum))) {
938 DEBUG(1, ("Max connections (%d) exceeded for %s\n",
939 lp_max_connections(snum), lp_servicename(snum)));
941 *pstatus = NT_STATUS_INSUFFICIENT_RESOURCES;
946 * Get us an entry in the connections db
948 if (!claim_connection(conn, lp_servicename(snum), 0)) {
949 DEBUG(1, ("Could not store connections entry\n"));
951 *pstatus = NT_STATUS_INTERNAL_DB_ERROR;
955 /* Preexecs are done here as they might make the dir we are to ChDir
957 /* execute any "root preexec = " line */
958 if (*lp_rootpreexec(snum)) {
959 char *cmd = talloc_sub_advanced(talloc_tos(),
960 lp_servicename(SNUM(conn)),
961 conn->server_info->unix_name,
963 conn->server_info->gid,
964 get_current_username(),
965 current_user_info.domain,
966 lp_rootpreexec(snum));
967 DEBUG(5,("cmd=%s\n",cmd));
968 ret = smbrun(cmd,NULL);
970 if (ret != 0 && lp_rootpreexec_close(snum)) {
971 DEBUG(1,("root preexec gave %d - failing "
972 "connection\n", ret));
973 yield_connection(conn, lp_servicename(snum));
975 *pstatus = NT_STATUS_ACCESS_DENIED;
980 /* USER Activites: */
981 if (!change_to_user(conn, conn->vuid)) {
982 /* No point continuing if they fail the basic checks */
983 DEBUG(0,("Can't become connected user!\n"));
984 yield_connection(conn, lp_servicename(snum));
986 *pstatus = NT_STATUS_LOGON_FAILURE;
990 /* Remember that a different vuid can connect later without these
993 /* Preexecs are done here as they might make the dir we are to ChDir
996 /* execute any "preexec = " line */
997 if (*lp_preexec(snum)) {
998 char *cmd = talloc_sub_advanced(talloc_tos(),
999 lp_servicename(SNUM(conn)),
1000 conn->server_info->unix_name,
1002 conn->server_info->gid,
1003 get_current_username(),
1004 current_user_info.domain,
1006 ret = smbrun(cmd,NULL);
1008 if (ret != 0 && lp_preexec_close(snum)) {
1009 DEBUG(1,("preexec gave %d - failing connection\n",
1011 *pstatus = NT_STATUS_ACCESS_DENIED;
1016 #ifdef WITH_FAKE_KASERVER
1017 if (lp_afs_share(snum)) {
1022 /* Add veto/hide lists */
1023 if (!IS_IPC(conn) && !IS_PRINT(conn)) {
1024 set_namearray( &conn->veto_list, lp_veto_files(snum));
1025 set_namearray( &conn->hide_list, lp_hide_files(snum));
1026 set_namearray( &conn->veto_oplock_list, lp_veto_oplocks(snum));
1029 /* Invoke VFS make connection hook - do this before the VFS_STAT call
1030 to allow any filesystems needing user credentials to initialize
1033 if (SMB_VFS_CONNECT(conn, lp_servicename(snum),
1034 conn->server_info->unix_name) < 0) {
1035 DEBUG(0,("make_connection: VFS make connection failed!\n"));
1036 *pstatus = NT_STATUS_UNSUCCESSFUL;
1040 /* Any error exit after here needs to call the disconnect hook. */
1041 on_err_call_dis_hook = true;
1043 /* win2000 does not check the permissions on the directory
1044 during the tree connect, instead relying on permission
1045 check during individual operations. To match this behaviour
1046 I have disabled this chdir check (tridge) */
1047 /* the alternative is just to check the directory exists */
1048 if ((ret = SMB_VFS_STAT(conn, conn->connectpath, &st)) != 0 ||
1049 !S_ISDIR(st.st_mode)) {
1050 if (ret == 0 && !S_ISDIR(st.st_mode)) {
1051 DEBUG(0,("'%s' is not a directory, when connecting to "
1052 "[%s]\n", conn->connectpath,
1053 lp_servicename(snum)));
1055 DEBUG(0,("'%s' does not exist or permission denied "
1056 "when connecting to [%s] Error was %s\n",
1057 conn->connectpath, lp_servicename(snum),
1060 *pstatus = NT_STATUS_BAD_NETWORK_NAME;
1064 string_set(&conn->origpath,conn->connectpath);
1066 #if SOFTLINK_OPTIMISATION
1067 /* resolve any soft links early if possible */
1068 if (vfs_ChDir(conn,conn->connectpath) == 0) {
1069 TALLOC_CTX *ctx = talloc_tos();
1070 char *s = vfs_GetWd(ctx,s);
1072 *status = map_nt_error_from_unix(errno);
1075 if (!set_conn_connectpath(conn,s)) {
1076 *status = NT_STATUS_NO_MEMORY;
1079 vfs_ChDir(conn,conn->connectpath);
1083 /* Figure out the characteristics of the underlying filesystem. This
1084 * assumes that all the filesystem mounted withing a share path have
1085 * the same characteristics, which is likely but not guaranteed.
1088 conn->fs_capabilities = SMB_VFS_FS_CAPABILITIES(conn);
1091 * Print out the 'connected as' stuff here as we need
1092 * to know the effective uid and gid we will be using
1093 * (at least initially).
1096 if( DEBUGLVL( IS_IPC(conn) ? 3 : 1 ) ) {
1097 dbgtext( "%s (%s) ", get_remote_machine_name(),
1098 conn->client_address );
1099 dbgtext( "%s", srv_is_signing_active() ? "signed " : "");
1100 dbgtext( "connect to service %s ", lp_servicename(snum) );
1101 dbgtext( "initially as user %s ",
1102 conn->server_info->unix_name );
1103 dbgtext( "(uid=%d, gid=%d) ", (int)geteuid(), (int)getegid() );
1104 dbgtext( "(pid %d)\n", (int)sys_getpid() );
1107 /* we've finished with the user stuff - go back to root */
1108 change_to_root_user();
1113 change_to_root_user();
1114 if (on_err_call_dis_hook) {
1115 /* Call VFS disconnect hook */
1116 SMB_VFS_DISCONNECT(conn);
1118 yield_connection(conn, lp_servicename(snum));
1123 /***************************************************************************************
1124 Simple wrapper function for make_connection() to include a call to
1126 **************************************************************************************/
1128 connection_struct *make_connection_with_chdir(const char *service_in,
1130 const char *dev, uint16 vuid,
1133 connection_struct *conn = NULL;
1135 conn = make_connection(service_in, password, dev, vuid, status);
1138 * make_connection() does not change the directory for us any more
1139 * so we have to do it as a separate step --jerry
1142 if ( conn && vfs_ChDir(conn,conn->connectpath) != 0 ) {
1143 DEBUG(0,("move_driver_to_download_area: Can't change "
1144 "directory to %s for [print$] (%s)\n",
1145 conn->connectpath,strerror(errno)));
1146 yield_connection(conn, lp_servicename(SNUM(conn)));
1148 *status = NT_STATUS_UNSUCCESSFUL;
1155 /****************************************************************************
1156 Make a connection to a service.
1159 ****************************************************************************/
1161 connection_struct *make_connection(const char *service_in, DATA_BLOB password,
1162 const char *pdev, uint16 vuid,
1166 user_struct *vuser = NULL;
1170 char addr[INET6_ADDRSTRLEN];
1174 /* This must ONLY BE CALLED AS ROOT. As it exits this function as
1176 if (!non_root_mode() && (euid = geteuid()) != 0) {
1177 DEBUG(0,("make_connection: PANIC ERROR. Called as nonroot "
1178 "(%u)\n", (unsigned int)euid ));
1179 smb_panic("make_connection: PANIC ERROR. Called as nonroot\n");
1182 if (conn_num_open() > 2047) {
1183 *status = NT_STATUS_INSUFF_SERVER_RESOURCES;
1187 if(lp_security() != SEC_SHARE) {
1188 vuser = get_valid_user_struct(vuid);
1190 DEBUG(1,("make_connection: refusing to connect with "
1191 "no session setup\n"));
1192 *status = NT_STATUS_ACCESS_DENIED;
1197 /* Logic to try and connect to the correct [homes] share, preferably
1198 without too many getpwnam() lookups. This is particulary nasty for
1199 winbind usernames, where the share name isn't the same as unix
1202 The snum of the homes share is stored on the vuser at session setup
1206 if (strequal(service_in,HOMES_NAME)) {
1207 if(lp_security() != SEC_SHARE) {
1208 DATA_BLOB no_pw = data_blob_null;
1209 if (vuser->homes_snum == -1) {
1210 DEBUG(2, ("[homes] share not available for "
1211 "this user because it was not found "
1212 "or created at session setup "
1214 *status = NT_STATUS_BAD_NETWORK_NAME;
1217 DEBUG(5, ("making a connection to [homes] service "
1218 "created at session setup time\n"));
1219 return make_connection_snum(vuser->homes_snum,
1223 /* Security = share. Try with
1224 * current_user_info.smb_name as the username. */
1225 if (*current_user_info.smb_name) {
1226 fstring unix_username;
1227 fstrcpy(unix_username,
1228 current_user_info.smb_name);
1229 map_username(unix_username);
1230 snum = find_service(unix_username);
1233 DEBUG(5, ("making a connection to 'homes' "
1234 "service %s based on "
1235 "security=share\n", service_in));
1236 return make_connection_snum(snum, NULL,
1241 } else if ((lp_security() != SEC_SHARE) && (vuser->homes_snum != -1)
1242 && strequal(service_in,
1243 lp_servicename(vuser->homes_snum))) {
1244 DATA_BLOB no_pw = data_blob_null;
1245 DEBUG(5, ("making a connection to 'homes' service [%s] "
1246 "created at session setup time\n", service_in));
1247 return make_connection_snum(vuser->homes_snum,
1252 fstrcpy(service, service_in);
1254 strlower_m(service);
1256 snum = find_service(service);
1259 if (strequal(service,"IPC$") ||
1260 (lp_enable_asu_support() && strequal(service,"ADMIN$"))) {
1261 DEBUG(3,("refusing IPC connection to %s\n", service));
1262 *status = NT_STATUS_ACCESS_DENIED;
1266 DEBUG(0,("%s (%s) couldn't find service %s\n",
1267 get_remote_machine_name(),
1268 client_addr(get_client_fd(),addr,sizeof(addr)),
1270 *status = NT_STATUS_BAD_NETWORK_NAME;
1274 /* Handle non-Dfs clients attempting connections to msdfs proxy */
1275 if (lp_host_msdfs() && (*lp_msdfs_proxy(snum) != '\0')) {
1276 DEBUG(3, ("refusing connection to dfs proxy share '%s' "
1277 "(pointing to %s)\n",
1278 service, lp_msdfs_proxy(snum)));
1279 *status = NT_STATUS_BAD_NETWORK_NAME;
1283 DEBUG(5, ("making a connection to 'normal' service %s\n", service));
1285 return make_connection_snum(snum, vuser,
1290 /****************************************************************************
1292 ****************************************************************************/
1294 void close_cnum(connection_struct *conn, uint16 vuid)
1297 pipe_close_conn(conn);
1299 file_close_conn(conn);
1300 dptr_closecnum(conn);
1303 change_to_root_user();
1305 DEBUG(IS_IPC(conn)?3:1, ("%s (%s) closed connection to service %s\n",
1306 get_remote_machine_name(),
1307 conn->client_address,
1308 lp_servicename(SNUM(conn))));
1310 /* Call VFS disconnect hook */
1311 SMB_VFS_DISCONNECT(conn);
1313 yield_connection(conn, lp_servicename(SNUM(conn)));
1315 /* make sure we leave the directory available for unmount */
1316 vfs_ChDir(conn, "/");
1318 /* execute any "postexec = " line */
1319 if (*lp_postexec(SNUM(conn)) &&
1320 change_to_user(conn, vuid)) {
1321 char *cmd = talloc_sub_advanced(talloc_tos(),
1322 lp_servicename(SNUM(conn)),
1323 conn->server_info->unix_name,
1325 conn->server_info->gid,
1326 get_current_username(),
1327 current_user_info.domain,
1328 lp_postexec(SNUM(conn)));
1331 change_to_root_user();
1334 change_to_root_user();
1335 /* execute any "root postexec = " line */
1336 if (*lp_rootpostexec(SNUM(conn))) {
1337 char *cmd = talloc_sub_advanced(talloc_tos(),
1338 lp_servicename(SNUM(conn)),
1339 conn->server_info->unix_name,
1341 conn->server_info->gid,
1342 get_current_username(),
1343 current_user_info.domain,
1344 lp_rootpostexec(SNUM(conn)));