/* * Unix SMB/CIFS implementation. * SMB parameters and setup * Copyright (C) Andrew Tridgell 1992-1998 * Copyright (C) Simo Sorce 2000-2003 * Copyright (C) Gerald Carter 2000 * Copyright (C) Jeremy Allison 2001 * Copyright (C) Andrew Bartlett 2002 * Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2005 * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., 675 * Mass Ave, Cambridge, MA 02139, USA. */ #include "includes.h" #if 0 /* when made a module use this */ static int tdbsam_debug_level = DBGC_ALL; #undef DBGC_CLASS #define DBGC_CLASS tdbsam_debug_level #else #undef DBGC_CLASS #define DBGC_CLASS DBGC_PASSDB #endif #define TDBSAM_VERSION 2 /* Most recent TDBSAM version */ #define TDBSAM_VERSION_STRING "INFO/version" #define PASSDB_FILE_NAME "passdb.tdb" #define USERPREFIX "USER_" #define RIDPREFIX "RID_" #define PRIVPREFIX "PRIV_" #define tdbsamver_t int32 struct tdbsam_privates { TDB_CONTEXT *passwd_tdb; /* retrive-once info */ const char *tdbsam_location; }; struct pwent_list { struct pwent_list *prev, *next; TDB_DATA key; }; static struct pwent_list *tdbsam_pwent_list; /** * Convert old TDBSAM to the latest version. * @param pdb_tdb A pointer to the opened TDBSAM file which must be converted. * This file must be opened with read/write access. * @param from Current version of the TDBSAM file. * @return True if the conversion has been successful, false otherwise. **/ static BOOL tdbsam_convert(TDB_CONTEXT *pdb_tdb, tdbsamver_t from) { const char * vstring = TDBSAM_VERSION_STRING; SAM_ACCOUNT *user = NULL; const char *prefix = USERPREFIX; TDB_DATA data, key, old_key; uint8 *buf = NULL; BOOL ret; if (pdb_tdb == NULL) { DEBUG(0,("tdbsam_convert: Bad TDB Context pointer.\n")); return False; } /* handle a Samba upgrade */ tdb_lock_bystring(pdb_tdb, vstring, 0); if (!NT_STATUS_IS_OK(pdb_init_sam(&user))) { DEBUG(0,("tdbsam_convert: cannot initialized a SAM_ACCOUNT.\n")); return False; } /* Enumerate all records and convert them */ key = tdb_firstkey(pdb_tdb); while (key.dptr) { /* skip all non-USER entries (eg. RIDs) */ while ((key.dsize != 0) && (strncmp(key.dptr, prefix, strlen (prefix)))) { old_key = key; /* increment to next in line */ key = tdb_nextkey(pdb_tdb, key); SAFE_FREE(old_key.dptr); } if (key.dptr) { /* read from tdbsam */ data = tdb_fetch(pdb_tdb, key); if (!data.dptr) { DEBUG(0,("tdbsam_convert: database entry not found: %s.\n",key.dptr)); return False; } if (!NT_STATUS_IS_OK(pdb_reset_sam(user))) { DEBUG(0,("tdbsam_convert: cannot reset SAM_ACCOUNT.\n")); SAFE_FREE(data.dptr); return False; } /* unpack the buffer from the former format */ DEBUG(10,("tdbsam_convert: Try unpacking a record with (key:%s) (version:%d)\n", key.dptr, from)); switch (from) { case 0: ret = init_sam_from_buffer_v0(user, (uint8 *)data.dptr, data.dsize); break; case 1: ret = init_sam_from_buffer_v1(user, (uint8 *)data.dptr, data.dsize); break; case 2: ret = init_sam_from_buffer_v2(user, (uint8 *)data.dptr, data.dsize); break; default: /* unknown tdbsam version */ ret = False; } if (!ret) { DEBUG(0,("tdbsam_convert: Bad SAM_ACCOUNT entry returned from TDB (key:%s) (version:%d)\n", key.dptr, from)); SAFE_FREE(data.dptr); return False; } /* We're finished with the old data. */ SAFE_FREE(data.dptr); /* pack from the buffer into the new format */ DEBUG(10,("tdbsam_convert: Try packing a record (key:%s) (version:%d)\n", key.dptr, from)); if ((data.dsize=init_buffer_from_sam (&buf, user, False)) == -1) { DEBUG(0,("tdbsam_convert: cannot pack the SAM_ACCOUNT into the new format\n")); SAFE_FREE(data.dptr); return False; } data.dptr = (char *)buf; /* Store the buffer inside the TDBSAM */ if (tdb_store(pdb_tdb, key, data, TDB_MODIFY) != TDB_SUCCESS) { DEBUG(0,("tdbsam_convert: cannot store the SAM_ACCOUNT (key:%s) in new format\n",key.dptr)); SAFE_FREE(data.dptr); return False; } SAFE_FREE(data.dptr); /* increment to next in line */ old_key = key; key = tdb_nextkey(pdb_tdb, key); SAFE_FREE(old_key.dptr); } } pdb_free_sam(&user); /* upgrade finished */ tdb_store_int32(pdb_tdb, vstring, TDBSAM_VERSION); tdb_unlock_bystring(pdb_tdb, vstring); return(True); } /** * Open the TDB passwd database, check version and convert it if needed. * @param name filename of the tdbsam file. * @param open_flags file access mode. * @return a TDB_CONTEXT handle on the tdbsam file. **/ static TDB_CONTEXT * tdbsam_tdbopen (const char *name, int open_flags) { TDB_CONTEXT *pdb_tdb; tdbsamver_t version; /* Try to open tdb passwd */ if (!(pdb_tdb = tdb_open_log(name, 0, TDB_DEFAULT, open_flags, 0600))) { DEBUG(0, ("Unable to open/create TDB passwd\n")); return NULL; } /* Check the version */ version = (tdbsamver_t) tdb_fetch_int32(pdb_tdb, TDBSAM_VERSION_STRING); if (version == -1) version = 0; /* Version not found, assume version 0 */ /* Compare the version */ if (version > TDBSAM_VERSION) { /* Version more recent than the latest known */ DEBUG(0, ("TDBSAM version unknown: %d\n", version)); tdb_close(pdb_tdb); pdb_tdb = NULL; } else if (version < TDBSAM_VERSION) { /* Older version, must be converted */ DEBUG(1, ("TDBSAM version too old (%d), trying to convert it.\n", version)); /* Reopen the pdb file with read-write access if needed */ if (!(open_flags & O_RDWR)) { DEBUG(10, ("tdbsam_tdbopen: TDB file opened with read only access, reopen it with read-write access.\n")); tdb_close(pdb_tdb); pdb_tdb = tdb_open_log(name, 0, TDB_DEFAULT, (open_flags & 07777770) | O_RDWR, 0600); } /* Convert */ if (!tdbsam_convert(pdb_tdb, version)){ DEBUG(0, ("tdbsam_tdbopen: Error when trying to convert tdbsam: %s\n",name)); tdb_close(pdb_tdb); pdb_tdb = NULL; } else { DEBUG(1, ("TDBSAM converted successfully.\n")); } /* Reopen the pdb file as it must be */ if (!(open_flags & O_RDWR)) { tdb_close(pdb_tdb); pdb_tdb = tdb_open_log(name, 0, TDB_DEFAULT, open_flags, 0600); } } return pdb_tdb; } /***************************************************************************** Utility functions to close the tdb sam database ****************************************************************************/ static void tdbsam_tdbclose ( struct tdbsam_privates *state ) { if ( !state ) return; if ( state->passwd_tdb ) { tdb_close( state->passwd_tdb ); state->passwd_tdb = NULL; } return; } /**************************************************************************** creates a list of user keys ****************************************************************************/ static int tdbsam_traverse_setpwent(TDB_CONTEXT *t, TDB_DATA key, TDB_DATA data, void *state) { const char *prefix = USERPREFIX; int prefixlen = strlen (prefix); struct pwent_list *ptr; if ( strncmp(key.dptr, prefix, prefixlen) == 0 ) { if ( !(ptr=SMB_MALLOC_P(struct pwent_list)) ) { DEBUG(0,("tdbsam_traverse_setpwent: Failed to malloc new entry for list\n")); /* just return 0 and let the traversal continue */ return 0; } ZERO_STRUCTP(ptr); /* save a copy of the key */ ptr->key.dptr = memdup( key.dptr, key.dsize ); ptr->key.dsize = key.dsize; DLIST_ADD( tdbsam_pwent_list, ptr ); } return 0; } /*************************************************************** Open the TDB passwd database for SAM account enumeration. Save a list of user keys for iteration. ****************************************************************/ static NTSTATUS tdbsam_setsampwent(struct pdb_methods *my_methods, BOOL update, uint16 acb_mask) { uint32 flags = update ? (O_RDWR|O_CREAT) : O_RDONLY; struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data; if ( !(tdb_state->passwd_tdb = tdbsam_tdbopen(tdb_state->tdbsam_location, flags )) ) return NT_STATUS_UNSUCCESSFUL; tdb_traverse( tdb_state->passwd_tdb, tdbsam_traverse_setpwent, NULL ); return NT_STATUS_OK; } /*************************************************************** End enumeration of the TDB passwd list. ****************************************************************/ static void tdbsam_endsampwent(struct pdb_methods *my_methods) { struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data; struct pwent_list *ptr, *ptr_next; tdbsam_tdbclose( tdb_state ); /* clear out any remaining entries in the list */ for ( ptr=tdbsam_pwent_list; ptr; ptr = ptr_next ) { ptr_next = ptr->next; DLIST_REMOVE( tdbsam_pwent_list, ptr ); SAFE_FREE( ptr->key.dptr); SAFE_FREE( ptr ); } DEBUG(7, ("endtdbpwent: closed sam database.\n")); } /***************************************************************** Get one SAM_ACCOUNT from the TDB (next in line) *****************************************************************/ static NTSTATUS tdbsam_getsampwent(struct pdb_methods *my_methods, SAM_ACCOUNT *user) { NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL; struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data; TDB_DATA data; struct pwent_list *pkey; if ( !user ) { DEBUG(0,("tdbsam_getsampwent: SAM_ACCOUNT is NULL.\n")); return nt_status; } if ( !tdbsam_pwent_list ) { DEBUG(4,("tdbsam_getsampwent: end of list\n")); tdbsam_tdbclose( tdb_state ); return nt_status; } if ( !tdb_state->passwd_tdb ) { if ( !(tdb_state->passwd_tdb = tdbsam_tdbopen(tdb_state->tdbsam_location, O_RDONLY)) ) return nt_status; } /* pull the next entry */ pkey = tdbsam_pwent_list; DLIST_REMOVE( tdbsam_pwent_list, pkey ); data = tdb_fetch(tdb_state->passwd_tdb, pkey->key); SAFE_FREE( pkey->key.dptr); SAFE_FREE( pkey); if (!data.dptr) { DEBUG(5,("pdb_getsampwent: database entry not found. Was the user deleted?\n")); return nt_status; } if (!init_sam_from_buffer(user, (unsigned char *)data.dptr, data.dsize)) { DEBUG(0,("pdb_getsampwent: Bad SAM_ACCOUNT entry returned from TDB!\n")); } SAFE_FREE( data.dptr ); return NT_STATUS_OK; } /****************************************************************** Lookup a name in the SAM TDB ******************************************************************/ static NTSTATUS tdbsam_getsampwnam (struct pdb_methods *my_methods, SAM_ACCOUNT *user, const char *sname) { NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL; struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data; TDB_CONTEXT *pwd_tdb; TDB_DATA data, key; fstring keystr; fstring name; if ( !user ) { DEBUG(0,("pdb_getsampwnam: SAM_ACCOUNT is NULL.\n")); return nt_status; } /* Data is stored in all lower-case */ fstrcpy(name, sname); strlower_m(name); /* set search key */ slprintf(keystr, sizeof(keystr)-1, "%s%s", USERPREFIX, name); key.dptr = keystr; key.dsize = strlen(keystr) + 1; /* open the accounts TDB */ if (!(pwd_tdb = tdbsam_tdbopen(tdb_state->tdbsam_location, O_RDONLY))) { if (errno == ENOENT) { /* * TDB file doesn't exist, so try to create new one. This is useful to avoid * confusing error msg when adding user account first time */ if (!(pwd_tdb = tdbsam_tdbopen(tdb_state->tdbsam_location, O_CREAT ))) { DEBUG(0, ("pdb_getsampwnam: TDB passwd (%s) did not exist. File successfully created.\n", tdb_state->tdbsam_location)); } else { DEBUG(0, ("pdb_getsampwnam: TDB passwd (%s) does not exist. Couldn't create new one. Error was: %s\n", tdb_state->tdbsam_location, strerror(errno))); } /* requested user isn't there anyway */ nt_status = NT_STATUS_NO_SUCH_USER; return nt_status; } DEBUG(0, ("pdb_getsampwnam: Unable to open TDB passwd (%s)!\n", tdb_state->tdbsam_location)); return nt_status; } /* get the record */ data = tdb_fetch(pwd_tdb, key); if (!data.dptr) { DEBUG(5,("pdb_getsampwnam (TDB): error fetching database.\n")); DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb))); DEBUGADD(5, (" Key: %s\n", keystr)); tdb_close(pwd_tdb); return nt_status; } /* unpack the buffer */ if (!init_sam_from_buffer(user, (unsigned char *)data.dptr, data.dsize)) { DEBUG(0,("pdb_getsampwent: Bad SAM_ACCOUNT entry returned from TDB!\n")); SAFE_FREE(data.dptr); tdb_close(pwd_tdb); return nt_status; } SAFE_FREE(data.dptr); /* no further use for database, close it now */ tdb_close(pwd_tdb); return NT_STATUS_OK; } /*************************************************************************** Search by rid **************************************************************************/ static NTSTATUS tdbsam_getsampwrid (struct pdb_methods *my_methods, SAM_ACCOUNT *user, uint32 rid) { NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL; struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data; TDB_CONTEXT *pwd_tdb; TDB_DATA data, key; fstring keystr; fstring name; if (user==NULL) { DEBUG(0,("pdb_getsampwrid: SAM_ACCOUNT is NULL.\n")); return nt_status; } /* set search key */ slprintf(keystr, sizeof(keystr)-1, "%s%.8x", RIDPREFIX, rid); key.dptr = keystr; key.dsize = strlen (keystr) + 1; /* open the accounts TDB */ if (!(pwd_tdb = tdbsam_tdbopen(tdb_state->tdbsam_location, O_RDONLY))) { DEBUG(0, ("pdb_getsampwrid: Unable to open TDB rid database!\n")); return nt_status; } /* get the record */ data = tdb_fetch (pwd_tdb, key); if (!data.dptr) { DEBUG(5,("pdb_getsampwrid (TDB): error looking up RID %d by key %s.\n", rid, keystr)); DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb))); tdb_close (pwd_tdb); return nt_status; } fstrcpy(name, data.dptr); SAFE_FREE(data.dptr); tdb_close (pwd_tdb); return tdbsam_getsampwnam (my_methods, user, name); } static NTSTATUS tdbsam_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT * user, const DOM_SID *sid) { uint32 rid; if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid)) return NT_STATUS_UNSUCCESSFUL; return tdbsam_getsampwrid(my_methods, user, rid); } static BOOL tdb_delete_samacct_only(TDB_CONTEXT *pwd_tdb, struct pdb_methods *my_methods, SAM_ACCOUNT *sam_pass) { TDB_DATA key; fstring keystr; fstring name; fstrcpy(name, pdb_get_username(sam_pass)); strlower_m(name); /* set the search key */ slprintf(keystr, sizeof(keystr)-1, "%s%s", USERPREFIX, name); key.dptr = keystr; key.dsize = strlen (keystr) + 1; /* it's outaa here! 8^) */ if (tdb_delete(pwd_tdb, key) != TDB_SUCCESS) { DEBUG(5, ("Error deleting entry from tdb passwd database!\n")); DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb))); tdb_close(pwd_tdb); return False; } return True; } /*************************************************************************** Delete a SAM_ACCOUNT ****************************************************************************/ static NTSTATUS tdbsam_delete_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT *sam_pass) { NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL; struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data; TDB_CONTEXT *pwd_tdb; TDB_DATA key; fstring keystr; uint32 rid; fstring name; fstrcpy(name, pdb_get_username(sam_pass)); strlower_m(name); /* open the TDB */ if (!(pwd_tdb = tdbsam_tdbopen(tdb_state->tdbsam_location, O_RDWR))) { DEBUG(0, ("Unable to open TDB passwd!")); return nt_status; } /* set the search key */ slprintf(keystr, sizeof(keystr)-1, "%s%s", USERPREFIX, name); key.dptr = keystr; key.dsize = strlen (keystr) + 1; rid = pdb_get_user_rid(sam_pass); /* it's outaa here! 8^) */ if (tdb_delete(pwd_tdb, key) != TDB_SUCCESS) { DEBUG(5, ("Error deleting entry from tdb passwd database!\n")); DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb))); tdb_close(pwd_tdb); return nt_status; } /* delete also the RID key */ /* set the search key */ slprintf(keystr, sizeof(keystr)-1, "%s%.8x", RIDPREFIX, rid); key.dptr = keystr; key.dsize = strlen (keystr) + 1; /* it's outaa here! 8^) */ if (tdb_delete(pwd_tdb, key) != TDB_SUCCESS) { DEBUG(5, ("Error deleting entry from tdb rid database!\n")); DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb))); tdb_close(pwd_tdb); return nt_status; } tdb_close(pwd_tdb); return NT_STATUS_OK; } /*************************************************************************** Update the TDB SAM account record only ****************************************************************************/ static BOOL tdb_update_samacct_only(TDB_CONTEXT *pwd_tdb, struct pdb_methods *my_methods, SAM_ACCOUNT* newpwd, int flag) { TDB_DATA key, data; uint8 *buf = NULL; fstring keystr; fstring name; BOOL ret = True; /* copy the SAM_ACCOUNT struct into a BYTE buffer for storage */ if ((data.dsize=init_buffer_from_sam (&buf, newpwd, False)) == -1) { DEBUG(0,("tdb_update_sam: ERROR - Unable to copy SAM_ACCOUNT info BYTE buffer!\n")); ret = False; goto done; } data.dptr = (char *)buf; fstrcpy(name, pdb_get_username(newpwd)); strlower_m(name); DEBUG(5, ("Storing %saccount %s with RID %d\n", flag == TDB_INSERT ? "(new) " : "", name, pdb_get_user_rid(newpwd))); /* setup the USER index key */ slprintf(keystr, sizeof(keystr)-1, "%s%s", USERPREFIX, name); key.dptr = keystr; key.dsize = strlen(keystr) + 1; /* add the account */ if (tdb_store(pwd_tdb, key, data, flag) != TDB_SUCCESS) { DEBUG(0, ("Unable to modify passwd TDB!")); DEBUGADD(0, (" Error: %s", tdb_errorstr(pwd_tdb))); DEBUGADD(0, (" occured while storing the main record (%s)\n", keystr)); ret = False; goto done; } done: /* cleanup */ SAFE_FREE(buf); return (ret); } /*************************************************************************** Update the TDB SAM RID record only ****************************************************************************/ static BOOL tdb_update_ridrec_only(TDB_CONTEXT *pwd_tdb, struct pdb_methods *my_methods, SAM_ACCOUNT* newpwd, int flag) { TDB_DATA key, data; fstring keystr; fstring name; fstrcpy(name, pdb_get_username(newpwd)); strlower_m(name); /* setup RID data */ data.dsize = strlen(name) + 1; data.dptr = name; /* setup the RID index key */ slprintf(keystr, sizeof(keystr)-1, "%s%.8x", RIDPREFIX, pdb_get_user_rid(newpwd)); key.dptr = keystr; key.dsize = strlen (keystr) + 1; /* add the reference */ if (tdb_store(pwd_tdb, key, data, flag) != TDB_SUCCESS) { DEBUG(0, ("Unable to modify TDB passwd !")); DEBUGADD(0, (" Error: %s\n", tdb_errorstr(pwd_tdb))); DEBUGADD(0, (" occured while storing the RID index (%s)\n", keystr)); return False; } return True; } /*************************************************************************** Update the TDB SAM ****************************************************************************/ static BOOL tdb_update_sam(struct pdb_methods *my_methods, SAM_ACCOUNT* newpwd, int flag) { struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data; TDB_CONTEXT *pwd_tdb = NULL; BOOL ret = True; uint32 user_rid; /* invalidate the existing TDB iterator if it is open */ if (tdb_state->passwd_tdb) { tdb_close(tdb_state->passwd_tdb); tdb_state->passwd_tdb = NULL; } /* open the account TDB passwd*/ pwd_tdb = tdbsam_tdbopen(tdb_state->tdbsam_location, O_RDWR | O_CREAT); if (!pwd_tdb) { DEBUG(0, ("tdb_update_sam: Unable to open TDB passwd (%s)!\n", tdb_state->tdbsam_location)); return False; } if (!pdb_get_group_rid(newpwd)) { DEBUG (0,("tdb_update_sam: Failing to store a SAM_ACCOUNT for [%s] without a primary group RID\n", pdb_get_username(newpwd))); ret = False; goto done; } if ( !(user_rid = pdb_get_user_rid(newpwd)) ) { DEBUG(0,("tdb_update_sam: SAM_ACCOUNT (%s) with no RID!\n", pdb_get_username(newpwd))); ret = False; goto done; } if (!tdb_update_samacct_only(pwd_tdb, my_methods, newpwd, flag) || !tdb_update_ridrec_only(pwd_tdb, my_methods, newpwd, flag)) { ret = False; goto done; } done: /* cleanup */ tdb_close (pwd_tdb); return (ret); } /*************************************************************************** Modifies an existing SAM_ACCOUNT ****************************************************************************/ static NTSTATUS tdbsam_update_sam_account (struct pdb_methods *my_methods, SAM_ACCOUNT *newpwd) { if (tdb_update_sam(my_methods, newpwd, TDB_MODIFY)) return NT_STATUS_OK; else return NT_STATUS_UNSUCCESSFUL; } /*************************************************************************** Adds an existing SAM_ACCOUNT ****************************************************************************/ static NTSTATUS tdbsam_add_sam_account (struct pdb_methods *my_methods, SAM_ACCOUNT *newpwd) { if (tdb_update_sam(my_methods, newpwd, TDB_INSERT)) return NT_STATUS_OK; else return NT_STATUS_UNSUCCESSFUL; } /*************************************************************************** Renames a SAM_ACCOUNT - check for the posix user/rename user script - Add and lock the new user record - rename the posix user - rewrite the rid->username record - delete the old user - unlock the new user record ***************************************************************************/ static NTSTATUS tdbsam_rename_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT *old_acct, const char *newname) { struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data; SAM_ACCOUNT *new_acct = NULL; pstring rename_script; TDB_CONTEXT *pwd_tdb = NULL; NTSTATUS ret = NT_STATUS_UNSUCCESSFUL; BOOL interim_account = False; if (!*(lp_renameuser_script())) goto done; if (!pdb_copy_sam_account(old_acct, &new_acct) || !pdb_set_username(new_acct, newname, PDB_CHANGED)) goto done; /* invalidate the existing TDB iterator if it is open */ if (tdb_state->passwd_tdb) { tdb_close(tdb_state->passwd_tdb); tdb_state->passwd_tdb = NULL; } /* open the account TDB passwd */ pwd_tdb = tdbsam_tdbopen(tdb_state->tdbsam_location, O_RDWR | O_CREAT); if (!pwd_tdb) { DEBUG(0, ("tdb_update_sam: Unable to open TDB passwd (%s)!\n", tdb_state->tdbsam_location)); goto done; } /* add the new account and lock it */ if (!tdb_update_samacct_only(pwd_tdb, my_methods, new_acct, TDB_INSERT)) goto done; interim_account = True; if (tdb_lock_bystring(pwd_tdb, newname, 30) == -1) { goto done; } /* rename the posix user */ pstrcpy(rename_script, lp_renameuser_script()); if (*rename_script) { int rename_ret; pstring_sub(rename_script, "%unew", newname); pstring_sub(rename_script, "%uold", pdb_get_username(old_acct)); rename_ret = smbrun(rename_script, NULL); DEBUG(rename_ret ? 0 : 3,("Running the command `%s' gave %d\n", rename_script, rename_ret)); if (rename_ret) goto done; } else { goto done; } /* rewrite the rid->username record */ if (!tdb_update_ridrec_only(pwd_tdb, my_methods, new_acct, TDB_MODIFY)) goto done; interim_account = False; tdb_unlock_bystring(pwd_tdb, newname); tdb_delete_samacct_only(pwd_tdb, my_methods, old_acct); ret = NT_STATUS_OK; done: /* cleanup */ if (interim_account) { tdb_unlock_bystring(pwd_tdb, newname); tdb_delete_samacct_only(pwd_tdb, my_methods, new_acct); } if (pwd_tdb) tdb_close (pwd_tdb); if (new_acct) pdb_free_sam(&new_acct); return (ret); } static void free_private_data(void **vp) { struct tdbsam_privates **tdb_state = (struct tdbsam_privates **)vp; tdbsam_tdbclose(*tdb_state); *tdb_state = NULL; /* No need to free any further, as it is talloc()ed */ } /** * Init tdbsam backend * * @param pdb_context initialised passdb context * @param pdb_method backend methods structure to be filled with function pointers * @param location the backend tdb file location * * @return nt_status code **/ static NTSTATUS pdb_init_tdbsam(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location) { NTSTATUS nt_status; struct tdbsam_privates *tdb_state; if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods(pdb_context->mem_ctx, pdb_method))) { return nt_status; } (*pdb_method)->name = "tdbsam"; (*pdb_method)->setsampwent = tdbsam_setsampwent; (*pdb_method)->endsampwent = tdbsam_endsampwent; (*pdb_method)->getsampwent = tdbsam_getsampwent; (*pdb_method)->getsampwnam = tdbsam_getsampwnam; (*pdb_method)->getsampwsid = tdbsam_getsampwsid; (*pdb_method)->add_sam_account = tdbsam_add_sam_account; (*pdb_method)->update_sam_account = tdbsam_update_sam_account; (*pdb_method)->delete_sam_account = tdbsam_delete_sam_account; (*pdb_method)->rename_sam_account = tdbsam_rename_sam_account; tdb_state = TALLOC_ZERO_P(pdb_context->mem_ctx, struct tdbsam_privates); if (!tdb_state) { DEBUG(0, ("talloc() failed for tdbsam private_data!\n")); return NT_STATUS_NO_MEMORY; } if (location) { tdb_state->tdbsam_location = talloc_strdup(pdb_context->mem_ctx, location); } else { pstring tdbfile; get_private_directory(tdbfile); pstrcat(tdbfile, "/"); pstrcat(tdbfile, PASSDB_FILE_NAME); tdb_state->tdbsam_location = talloc_strdup(pdb_context->mem_ctx, tdbfile); } (*pdb_method)->private_data = tdb_state; (*pdb_method)->free_private_data = free_private_data; return NT_STATUS_OK; } NTSTATUS pdb_tdbsam_init(void) { return smb_register_passdb(PASSDB_INTERFACE_VERSION, "tdbsam", pdb_init_tdbsam); }