/* Unix SMB/CIFS implementation. Password and authentication handling Copyright (C) Jeremy Allison 1996-2001 Copyright (C) Luke Kenneth Casson Leighton 1996-1998 Copyright (C) Gerald (Jerry) Carter 2000-2006 Copyright (C) Andrew Bartlett 2001-2002 Copyright (C) Simo Sorce 2003 Copyright (C) Volker Lendecke 2006 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 3 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, see <http://www.gnu.org/licenses/>. */ #include "includes.h" #undef DBGC_CLASS #define DBGC_CLASS DBGC_PASSDB /****************************************************************** get the default domain/netbios name to be used when testing authentication. For example, if you connect to a Windows member server using a bogus domain name, the Windows box will map the BOGUS\user to DOMAIN\user. A standalone box will map to WKS\user. ******************************************************************/ const char *my_sam_name(void) { /* standalone servers can only use the local netbios name */ if ( lp_server_role() == ROLE_STANDALONE ) return global_myname(); /* Windows domain members default to the DOMAIN name when not specified */ return lp_workgroup(); } /********************************************************************** ***********************************************************************/ static int samu_destroy(struct samu *user) { data_blob_clear_free( &user->lm_pw ); data_blob_clear_free( &user->nt_pw ); if ( user->plaintext_pw ) memset( user->plaintext_pw, 0x0, strlen(user->plaintext_pw) ); return 0; } /********************************************************************** generate a new struct samuser ***********************************************************************/ struct samu *samu_new( TALLOC_CTX *ctx ) { struct samu *user; if ( !(user = TALLOC_ZERO_P( ctx, struct samu )) ) { DEBUG(0,("samuser_new: Talloc failed!\n")); return NULL; } talloc_set_destructor( user, samu_destroy ); /* no initial methods */ user->methods = NULL; /* Don't change these timestamp settings without a good reason. They are important for NT member server compatibility. */ user->logon_time = (time_t)0; user->pass_last_set_time = (time_t)0; user->pass_can_change_time = (time_t)0; user->logoff_time = get_time_t_max(); user->kickoff_time = get_time_t_max(); user->pass_must_change_time = get_time_t_max(); user->fields_present = 0x00ffffff; user->logon_divs = 168; /* hours per week */ user->hours_len = 21; /* 21 times 8 bits = 168 */ memset(user->hours, 0xff, user->hours_len); /* available at all hours */ user->bad_password_count = 0; user->logon_count = 0; user->unknown_6 = 0x000004ec; /* don't know */ /* Some parts of samba strlen their pdb_get...() returns, so this keeps the interface unchanged for now. */ user->username = ""; user->domain = ""; user->nt_username = ""; user->full_name = ""; user->home_dir = ""; user->logon_script = ""; user->profile_path = ""; user->acct_desc = ""; user->workstations = ""; user->comment = ""; user->munged_dial = ""; user->plaintext_pw = NULL; /* Unless we know otherwise have a Account Control Bit value of 'normal user'. This helps User Manager, which asks for a filtered list of users. */ user->acct_ctrl = ACB_NORMAL; return user; } /********************************************************************* Initialize a struct samu from a struct passwd including the user and group SIDs. The *user structure is filled out with the Unix attributes and a user SID. *********************************************************************/ static NTSTATUS samu_set_unix_internal(struct samu *user, const struct passwd *pwd, BOOL create) { const char *guest_account = lp_guestaccount(); const char *domain = global_myname(); uint32 urid; if ( !pwd ) { return NT_STATUS_NO_SUCH_USER; } /* Basic properties based upon the Unix account information */ pdb_set_username(user, pwd->pw_name, PDB_SET); pdb_set_fullname(user, pwd->pw_gecos, PDB_SET); pdb_set_domain (user, get_global_sam_name(), PDB_DEFAULT); #if 0 /* This can lead to a primary group of S-1-22-2-XX which will be rejected by other parts of the Samba code. Rely on pdb_get_group_sid() to "Do The Right Thing" (TM) --jerry */ gid_to_sid(&group_sid, pwd->pw_gid); pdb_set_group_sid(user, &group_sid, PDB_SET); #endif /* save the password structure for later use */ user->unix_pw = tcopy_passwd( user, pwd ); /* Special case for the guest account which must have a RID of 501 */ if ( strequal( pwd->pw_name, guest_account ) ) { if ( !pdb_set_user_sid_from_rid(user, DOMAIN_USER_RID_GUEST, PDB_DEFAULT)) { return NT_STATUS_NO_SUCH_USER; } return NT_STATUS_OK; } /* Non-guest accounts...Check for a workstation or user account */ if (pwd->pw_name[strlen(pwd->pw_name)-1] == '$') { /* workstation */ if (!pdb_set_acct_ctrl(user, ACB_WSTRUST, PDB_DEFAULT)) { DEBUG(1, ("Failed to set 'workstation account' flags for user %s.\n", pwd->pw_name)); return NT_STATUS_INVALID_COMPUTER_NAME; } } else { /* user */ if (!pdb_set_acct_ctrl(user, ACB_NORMAL, PDB_DEFAULT)) { DEBUG(1, ("Failed to set 'normal account' flags for user %s.\n", pwd->pw_name)); return NT_STATUS_INVALID_ACCOUNT_NAME; } /* set some basic attributes */ pdb_set_profile_path(user, talloc_sub_specified(user, lp_logon_path(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid), PDB_DEFAULT); pdb_set_homedir(user, talloc_sub_specified(user, lp_logon_home(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid), PDB_DEFAULT); pdb_set_dir_drive(user, talloc_sub_specified(user, lp_logon_drive(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid), PDB_DEFAULT); pdb_set_logon_script(user, talloc_sub_specified(user, lp_logon_script(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid), PDB_DEFAULT); } /* Now deal with the user SID. If we have a backend that can generate RIDs, then do so. But sometimes the caller just wanted a structure initialized and will fill in these fields later (such as from a NET_USER_INFO_3 structure) */ if ( create && !pdb_rid_algorithm() ) { uint32 user_rid; DOM_SID user_sid; if ( !pdb_new_rid( &user_rid ) ) { DEBUG(3, ("Could not allocate a new RID\n")); return NT_STATUS_ACCESS_DENIED; } sid_copy( &user_sid, get_global_sam_sid() ); sid_append_rid( &user_sid, user_rid ); if ( !pdb_set_user_sid(user, &user_sid, PDB_SET) ) { DEBUG(3, ("pdb_set_user_sid failed\n")); return NT_STATUS_INTERNAL_ERROR; } return NT_STATUS_OK; } /* generate a SID for the user with the RID algorithm */ urid = algorithmic_pdb_uid_to_user_rid( user->unix_pw->pw_uid ); if ( !pdb_set_user_sid_from_rid( user, urid, PDB_SET) ) { return NT_STATUS_INTERNAL_ERROR; } return NT_STATUS_OK; } /******************************************************************** Set the Unix user attributes ********************************************************************/ NTSTATUS samu_set_unix(struct samu *user, const struct passwd *pwd) { return samu_set_unix_internal( user, pwd, False ); } NTSTATUS samu_alloc_rid_unix(struct samu *user, const struct passwd *pwd) { return samu_set_unix_internal( user, pwd, True ); } /********************************************************** Encode the account control bits into a string. length = length of string to encode into (including terminating null). length *MUST BE MORE THAN 2* ! **********************************************************/ char *pdb_encode_acct_ctrl(uint32 acct_ctrl, size_t length) { static fstring acct_str; size_t i = 0; SMB_ASSERT(length <= sizeof(acct_str)); acct_str[i++] = '['; if (acct_ctrl & ACB_PWNOTREQ ) acct_str[i++] = 'N'; if (acct_ctrl & ACB_DISABLED ) acct_str[i++] = 'D'; if (acct_ctrl & ACB_HOMDIRREQ) acct_str[i++] = 'H'; if (acct_ctrl & ACB_TEMPDUP ) acct_str[i++] = 'T'; if (acct_ctrl & ACB_NORMAL ) acct_str[i++] = 'U'; if (acct_ctrl & ACB_MNS ) acct_str[i++] = 'M'; if (acct_ctrl & ACB_WSTRUST ) acct_str[i++] = 'W'; if (acct_ctrl & ACB_SVRTRUST ) acct_str[i++] = 'S'; if (acct_ctrl & ACB_AUTOLOCK ) acct_str[i++] = 'L'; if (acct_ctrl & ACB_PWNOEXP ) acct_str[i++] = 'X'; if (acct_ctrl & ACB_DOMTRUST ) acct_str[i++] = 'I'; for ( ; i < length - 2 ; i++ ) acct_str[i] = ' '; i = length - 2; acct_str[i++] = ']'; acct_str[i++] = '\0'; return acct_str; } /********************************************************** Decode the account control bits from a string. **********************************************************/ uint32 pdb_decode_acct_ctrl(const char *p) { uint32 acct_ctrl = 0; BOOL finished = False; /* * Check if the account type bits have been encoded after the * NT password (in the form [NDHTUWSLXI]). */ if (*p != '[') return 0; for (p++; *p && !finished; p++) { switch (*p) { case 'N': { acct_ctrl |= ACB_PWNOTREQ ; break; /* 'N'o password. */ } case 'D': { acct_ctrl |= ACB_DISABLED ; break; /* 'D'isabled. */ } case 'H': { acct_ctrl |= ACB_HOMDIRREQ; break; /* 'H'omedir required. */ } case 'T': { acct_ctrl |= ACB_TEMPDUP ; break; /* 'T'emp account. */ } case 'U': { acct_ctrl |= ACB_NORMAL ; break; /* 'U'ser account (normal). */ } case 'M': { acct_ctrl |= ACB_MNS ; break; /* 'M'NS logon user account. What is this ? */ } case 'W': { acct_ctrl |= ACB_WSTRUST ; break; /* 'W'orkstation account. */ } case 'S': { acct_ctrl |= ACB_SVRTRUST ; break; /* 'S'erver account. */ } case 'L': { acct_ctrl |= ACB_AUTOLOCK ; break; /* 'L'ocked account. */ } case 'X': { acct_ctrl |= ACB_PWNOEXP ; break; /* No 'X'piry on password */ } case 'I': { acct_ctrl |= ACB_DOMTRUST ; break; /* 'I'nterdomain trust account. */ } case ' ': { break; } case ':': case '\n': case '\0': case ']': default: { finished = True; } } } return acct_ctrl; } /************************************************************* Routine to set 32 hex password characters from a 16 byte array. **************************************************************/ void pdb_sethexpwd(char *p, const unsigned char *pwd, uint32 acct_ctrl) { if (pwd != NULL) { int i; for (i = 0; i < 16; i++) slprintf(&p[i*2], 3, "%02X", pwd[i]); } else { if (acct_ctrl & ACB_PWNOTREQ) safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 32); else safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 32); } } /************************************************************* Routine to get the 32 hex characters and turn them into a 16 byte array. **************************************************************/ BOOL pdb_gethexpwd(const char *p, unsigned char *pwd) { int i; unsigned char lonybble, hinybble; const char *hexchars = "0123456789ABCDEF"; char *p1, *p2; if (!p) return (False); for (i = 0; i < 32; i += 2) { hinybble = toupper_ascii(p[i]); lonybble = toupper_ascii(p[i + 1]); p1 = strchr(hexchars, hinybble); p2 = strchr(hexchars, lonybble); if (!p1 || !p2) return (False); hinybble = PTR_DIFF(p1, hexchars); lonybble = PTR_DIFF(p2, hexchars); pwd[i / 2] = (hinybble << 4) | lonybble; } return (True); } /************************************************************* Routine to set 42 hex hours characters from a 21 byte array. **************************************************************/ void pdb_sethexhours(char *p, const unsigned char *hours) { if (hours != NULL) { int i; for (i = 0; i < 21; i++) { slprintf(&p[i*2], 3, "%02X", hours[i]); } } else { safe_strcpy(p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 43); } } /************************************************************* Routine to get the 42 hex characters and turn them into a 21 byte array. **************************************************************/ BOOL pdb_gethexhours(const char *p, unsigned char *hours) { int i; unsigned char lonybble, hinybble; const char *hexchars = "0123456789ABCDEF"; char *p1, *p2; if (!p) { return (False); } for (i = 0; i < 42; i += 2) { hinybble = toupper_ascii(p[i]); lonybble = toupper_ascii(p[i + 1]); p1 = strchr(hexchars, hinybble); p2 = strchr(hexchars, lonybble); if (!p1 || !p2) { return (False); } hinybble = PTR_DIFF(p1, hexchars); lonybble = PTR_DIFF(p2, hexchars); hours[i / 2] = (hinybble << 4) | lonybble; } return (True); } /******************************************************************** ********************************************************************/ int algorithmic_rid_base(void) { static int rid_offset = 0; if (rid_offset != 0) return rid_offset; rid_offset = lp_algorithmic_rid_base(); if (rid_offset < BASE_RID) { /* Try to prevent admin foot-shooting, we can't put algorithmic rids below 1000, that's the 'well known RIDs' on NT */ DEBUG(0, ("'algorithmic rid base' must be equal to or above %ld\n", BASE_RID)); rid_offset = BASE_RID; } if (rid_offset & 1) { DEBUG(0, ("algorithmic rid base must be even\n")); rid_offset += 1; } return rid_offset; } /******************************************************************* Converts NT user RID to a UNIX uid. ********************************************************************/ uid_t algorithmic_pdb_user_rid_to_uid(uint32 user_rid) { int rid_offset = algorithmic_rid_base(); return (uid_t)(((user_rid & (~USER_RID_TYPE)) - rid_offset)/RID_MULTIPLIER); } uid_t max_algorithmic_uid(void) { return algorithmic_pdb_user_rid_to_uid(0xfffffffe); } /******************************************************************* converts UNIX uid to an NT User RID. ********************************************************************/ uint32 algorithmic_pdb_uid_to_user_rid(uid_t uid) { int rid_offset = algorithmic_rid_base(); return (((((uint32)uid)*RID_MULTIPLIER) + rid_offset) | USER_RID_TYPE); } /******************************************************************* Converts NT group RID to a UNIX gid. ********************************************************************/ gid_t pdb_group_rid_to_gid(uint32 group_rid) { int rid_offset = algorithmic_rid_base(); return (gid_t)(((group_rid & (~GROUP_RID_TYPE))- rid_offset)/RID_MULTIPLIER); } gid_t max_algorithmic_gid(void) { return pdb_group_rid_to_gid(0xffffffff); } /******************************************************************* converts NT Group RID to a UNIX uid. warning: you must not call that function only you must do a call to the group mapping first. there is not anymore a direct link between the gid and the rid. ********************************************************************/ uint32 algorithmic_pdb_gid_to_group_rid(gid_t gid) { int rid_offset = algorithmic_rid_base(); return (((((uint32)gid)*RID_MULTIPLIER) + rid_offset) | GROUP_RID_TYPE); } /******************************************************************* Decides if a RID is a well known RID. ********************************************************************/ static BOOL rid_is_well_known(uint32 rid) { /* Not using rid_offset here, because this is the actual NT fixed value (1000) */ return (rid < BASE_RID); } /******************************************************************* Decides if a RID is a user or group RID. ********************************************************************/ BOOL algorithmic_pdb_rid_is_user(uint32 rid) { if ( rid_is_well_known(rid) ) { /* * The only well known user RIDs are DOMAIN_USER_RID_ADMIN * and DOMAIN_USER_RID_GUEST. */ if(rid == DOMAIN_USER_RID_ADMIN || rid == DOMAIN_USER_RID_GUEST) return True; } else if((rid & RID_TYPE_MASK) == USER_RID_TYPE) { return True; } return False; } /******************************************************************* Convert a name into a SID. Used in the lookup name rpc. ********************************************************************/ BOOL lookup_global_sam_name(const char *name, int flags, uint32_t *rid, enum lsa_SidType *type) { GROUP_MAP map; BOOL ret; /* Windows treats "MACHINE\None" as a special name for rid 513 on non-DCs. You cannot create a user or group name "None" on Windows. You will get an error that the group already exists. */ if ( strequal( name, "None" ) ) { *rid = DOMAIN_GROUP_RID_USERS; *type = SID_NAME_DOM_GRP; return True; } /* LOOKUP_NAME_GROUP is a hack to allow valid users = @foo to work * correctly in the case where foo also exists as a user. If the flag * is set, don't look for users at all. */ if ((flags & LOOKUP_NAME_GROUP) == 0) { struct samu *sam_account = NULL; DOM_SID user_sid; if ( !(sam_account = samu_new( NULL )) ) { return False; } become_root(); ret = pdb_getsampwnam(sam_account, name); unbecome_root(); if (ret) { sid_copy(&user_sid, pdb_get_user_sid(sam_account)); } TALLOC_FREE(sam_account); if (ret) { if (!sid_check_is_in_our_domain(&user_sid)) { DEBUG(0, ("User %s with invalid SID %s in passdb\n", name, sid_string_static(&user_sid))); return False; } sid_peek_rid(&user_sid, rid); *type = SID_NAME_USER; return True; } } /* * Maybe it is a group ? */ become_root(); ret = pdb_getgrnam(&map, name); unbecome_root(); if (!ret) { return False; } /* BUILTIN groups are looked up elsewhere */ if (!sid_check_is_in_our_domain(&map.sid)) { DEBUG(10, ("Found group %s (%s) not in our domain -- " "ignoring.", name, sid_string_static(&map.sid))); return False; } /* yes it's a mapped group */ sid_peek_rid(&map.sid, rid); *type = map.sid_name_use; return True; } /************************************************************* Change a password entry in the local smbpasswd file. *************************************************************/ NTSTATUS local_password_change(const char *user_name, int local_flags, const char *new_passwd, char *err_str, size_t err_str_len, char *msg_str, size_t msg_str_len) { struct samu *sam_pass=NULL; uint32 other_acb; NTSTATUS result; *err_str = '\0'; *msg_str = '\0'; /* Get the smb passwd entry for this user */ if ( !(sam_pass = samu_new( NULL )) ) { return NT_STATUS_NO_MEMORY; } become_root(); if(!pdb_getsampwnam(sam_pass, user_name)) { unbecome_root(); TALLOC_FREE(sam_pass); if ((local_flags & LOCAL_ADD_USER) || (local_flags & LOCAL_DELETE_USER)) { int tmp_debug = DEBUGLEVEL; struct passwd *pwd; /* Might not exist in /etc/passwd. */ if (tmp_debug < 1) { DEBUGLEVEL = 1; } if ( !(pwd = getpwnam_alloc( NULL, user_name)) ) { return NT_STATUS_NO_SUCH_USER; } /* create the struct samu and initialize the basic Unix properties */ if ( !(sam_pass = samu_new( NULL )) ) { return NT_STATUS_NO_MEMORY; } result = samu_set_unix( sam_pass, pwd ); DEBUGLEVEL = tmp_debug; TALLOC_FREE( pwd ); if (NT_STATUS_EQUAL(result, NT_STATUS_INVALID_PRIMARY_GROUP)) { return result; } if (!NT_STATUS_IS_OK(result)) { slprintf(err_str, err_str_len-1, "Failed to " "initialize account for user %s: %s\n", user_name, nt_errstr(result)); return result; } } else { slprintf(err_str, err_str_len-1,"Failed to find entry for user %s.\n", user_name); return NT_STATUS_NO_SUCH_USER; } } else { unbecome_root(); /* the entry already existed */ local_flags &= ~LOCAL_ADD_USER; } /* the 'other' acb bits not being changed here */ other_acb = (pdb_get_acct_ctrl(sam_pass) & (~(ACB_WSTRUST|ACB_DOMTRUST|ACB_SVRTRUST|ACB_NORMAL))); if (local_flags & LOCAL_TRUST_ACCOUNT) { if (!pdb_set_acct_ctrl(sam_pass, ACB_WSTRUST | other_acb, PDB_CHANGED) ) { slprintf(err_str, err_str_len - 1, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) { if (!pdb_set_acct_ctrl(sam_pass, ACB_DOMTRUST | other_acb, PDB_CHANGED)) { slprintf(err_str, err_str_len - 1, "Failed to set 'domain trust account' flags for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } } else { if (!pdb_set_acct_ctrl(sam_pass, ACB_NORMAL | other_acb, PDB_CHANGED)) { slprintf(err_str, err_str_len - 1, "Failed to set 'normal account' flags for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } } /* * We are root - just write the new password * and the valid last change time. */ if (local_flags & LOCAL_DISABLE_USER) { if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_DISABLED, PDB_CHANGED)) { slprintf(err_str, err_str_len-1, "Failed to set 'disabled' flag for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } } else if (local_flags & LOCAL_ENABLE_USER) { if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) { slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } } if (local_flags & LOCAL_SET_NO_PASSWORD) { if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_PWNOTREQ, PDB_CHANGED)) { slprintf(err_str, err_str_len-1, "Failed to set 'no password required' flag for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } } else if (local_flags & LOCAL_SET_PASSWORD) { /* * If we're dealing with setting a completely empty user account * ie. One with a password of 'XXXX', but not set disabled (like * an account created from scratch) then if the old password was * 'XX's then getsmbpwent will have set the ACB_DISABLED flag. * We remove that as we're giving this user their first password * and the decision hasn't really been made to disable them (ie. * don't create them disabled). JRA. */ if ((pdb_get_lanman_passwd(sam_pass)==NULL) && (pdb_get_acct_ctrl(sam_pass)&ACB_DISABLED)) { if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) { slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } } if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_PWNOTREQ), PDB_CHANGED)) { slprintf(err_str, err_str_len-1, "Failed to unset 'no password required' flag for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } if (!pdb_set_plaintext_passwd (sam_pass, new_passwd)) { slprintf(err_str, err_str_len-1, "Failed to set password for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } } if (local_flags & LOCAL_ADD_USER) { if (NT_STATUS_IS_OK(pdb_add_sam_account(sam_pass))) { slprintf(msg_str, msg_str_len-1, "Added user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_OK; } else { slprintf(err_str, err_str_len-1, "Failed to add entry for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } } else if (local_flags & LOCAL_DELETE_USER) { if (!NT_STATUS_IS_OK(pdb_delete_sam_account(sam_pass))) { slprintf(err_str,err_str_len-1, "Failed to delete entry for user %s.\n", user_name); TALLOC_FREE(sam_pass); return NT_STATUS_UNSUCCESSFUL; } slprintf(msg_str, msg_str_len-1, "Deleted user %s.\n", user_name); } else { result = pdb_update_sam_account(sam_pass); if(!NT_STATUS_IS_OK(result)) { slprintf(err_str, err_str_len-1, "Failed to modify entry for user %s.\n", user_name); TALLOC_FREE(sam_pass); return result; } if(local_flags & LOCAL_DISABLE_USER) slprintf(msg_str, msg_str_len-1, "Disabled user %s.\n", user_name); else if (local_flags & LOCAL_ENABLE_USER) slprintf(msg_str, msg_str_len-1, "Enabled user %s.\n", user_name); else if (local_flags & LOCAL_SET_NO_PASSWORD) slprintf(msg_str, msg_str_len-1, "User %s password set to none.\n", user_name); } TALLOC_FREE(sam_pass); return NT_STATUS_OK; } /********************************************************************** Marshall/unmarshall struct samu structs. *********************************************************************/ #define TDB_FORMAT_STRING_V3 "dddddddBBBBBBBBBBBBddBBBdwdBwwd" /********************************************************************* *********************************************************************/ BOOL init_sam_from_buffer_v3(struct samu *sampass, uint8 *buf, uint32 buflen) { /* times are stored as 32bit integer take care on system with 64bit wide time_t --SSS */ uint32 logon_time, logoff_time, kickoff_time, bad_password_time, pass_last_set_time, pass_can_change_time, pass_must_change_time; char *username = NULL; char *domain = NULL; char *nt_username = NULL; char *dir_drive = NULL; char *unknown_str = NULL; char *munged_dial = NULL; char *fullname = NULL; char *homedir = NULL; char *logon_script = NULL; char *profile_path = NULL; char *acct_desc = NULL; char *workstations = NULL; uint32 username_len, domain_len, nt_username_len, dir_drive_len, unknown_str_len, munged_dial_len, fullname_len, homedir_len, logon_script_len, profile_path_len, acct_desc_len, workstations_len; uint32 user_rid, group_rid, hours_len, unknown_6, acct_ctrl; uint16 logon_divs; uint16 bad_password_count, logon_count; uint8 *hours = NULL; uint8 *lm_pw_ptr = NULL, *nt_pw_ptr = NULL, *nt_pw_hist_ptr = NULL; uint32 len = 0; uint32 lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen; uint32 pwHistLen = 0; BOOL ret = True; fstring tmpstring; BOOL expand_explicit = lp_passdb_expand_explicit(); if(sampass == NULL || buf == NULL) { DEBUG(0, ("init_sam_from_buffer_v3: NULL parameters found!\n")); return False; } /* TDB_FORMAT_STRING_V3 "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */ /* unpack the buffer into variables */ len = tdb_unpack (buf, buflen, TDB_FORMAT_STRING_V3, &logon_time, /* d */ &logoff_time, /* d */ &kickoff_time, /* d */ &bad_password_time, /* d */ &pass_last_set_time, /* d */ &pass_can_change_time, /* d */ &pass_must_change_time, /* d */ &username_len, &username, /* B */ &domain_len, &domain, /* B */ &nt_username_len, &nt_username, /* B */ &fullname_len, &fullname, /* B */ &homedir_len, &homedir, /* B */ &dir_drive_len, &dir_drive, /* B */ &logon_script_len, &logon_script, /* B */ &profile_path_len, &profile_path, /* B */ &acct_desc_len, &acct_desc, /* B */ &workstations_len, &workstations, /* B */ &unknown_str_len, &unknown_str, /* B */ &munged_dial_len, &munged_dial, /* B */ &user_rid, /* d */ &group_rid, /* d */ &lm_pw_len, &lm_pw_ptr, /* B */ &nt_pw_len, &nt_pw_ptr, /* B */ /* Change from V1 is addition of password history field. */ &nt_pw_hist_len, &nt_pw_hist_ptr, /* B */ /* Change from V2 is the uint32 acb_mask */ &acct_ctrl, /* d */ /* Also "remove_me" field was removed. */ &logon_divs, /* w */ &hours_len, /* d */ &hourslen, &hours, /* B */ &bad_password_count, /* w */ &logon_count, /* w */ &unknown_6); /* d */ if (len == (uint32) -1) { ret = False; goto done; } pdb_set_logon_time(sampass, convert_uint32_to_time_t(logon_time), PDB_SET); pdb_set_logoff_time(sampass, convert_uint32_to_time_t(logoff_time), PDB_SET); pdb_set_kickoff_time(sampass, convert_uint32_to_time_t(kickoff_time), PDB_SET); pdb_set_bad_password_time(sampass, convert_uint32_to_time_t(bad_password_time), PDB_SET); pdb_set_pass_can_change_time(sampass, convert_uint32_to_time_t(pass_can_change_time), PDB_SET); pdb_set_pass_must_change_time(sampass, convert_uint32_to_time_t(pass_must_change_time), PDB_SET); pdb_set_pass_last_set_time(sampass, convert_uint32_to_time_t(pass_last_set_time), PDB_SET); pdb_set_username(sampass, username, PDB_SET); pdb_set_domain(sampass, domain, PDB_SET); pdb_set_nt_username(sampass, nt_username, PDB_SET); pdb_set_fullname(sampass, fullname, PDB_SET); if (homedir) { fstrcpy( tmpstring, homedir ); if (expand_explicit) { standard_sub_basic( username, domain, tmpstring, sizeof(tmpstring) ); } pdb_set_homedir(sampass, tmpstring, PDB_SET); } else { pdb_set_homedir(sampass, talloc_sub_basic(sampass, username, domain, lp_logon_home()), PDB_DEFAULT); } if (dir_drive) pdb_set_dir_drive(sampass, dir_drive, PDB_SET); else pdb_set_dir_drive(sampass, lp_logon_drive(), PDB_DEFAULT ); if (logon_script) { fstrcpy( tmpstring, logon_script ); if (expand_explicit) { standard_sub_basic( username, domain, tmpstring, sizeof(tmpstring) ); } pdb_set_logon_script(sampass, tmpstring, PDB_SET); } else { pdb_set_logon_script(sampass, talloc_sub_basic(sampass, username, domain, lp_logon_script()), PDB_DEFAULT); } if (profile_path) { fstrcpy( tmpstring, profile_path ); if (expand_explicit) { standard_sub_basic( username, domain, tmpstring, sizeof(tmpstring) ); } pdb_set_profile_path(sampass, tmpstring, PDB_SET); } else { pdb_set_profile_path(sampass, talloc_sub_basic(sampass, username, domain, lp_logon_path()), PDB_DEFAULT); } pdb_set_acct_desc(sampass, acct_desc, PDB_SET); pdb_set_workstations(sampass, workstations, PDB_SET); pdb_set_munged_dial(sampass, munged_dial, PDB_SET); if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) { if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) { ret = False; goto done; } } if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) { if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) { ret = False; goto done; } } pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen); if (pwHistLen) { uint8 *pw_hist = (uint8 *)SMB_MALLOC(pwHistLen * PW_HISTORY_ENTRY_LEN); if (!pw_hist) { ret = False; goto done; } memset(pw_hist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN); if (nt_pw_hist_ptr && nt_pw_hist_len) { int i; SMB_ASSERT((nt_pw_hist_len % PW_HISTORY_ENTRY_LEN) == 0); nt_pw_hist_len /= PW_HISTORY_ENTRY_LEN; for (i = 0; (i < pwHistLen) && (i < nt_pw_hist_len); i++) { memcpy(&pw_hist[i*PW_HISTORY_ENTRY_LEN], &nt_pw_hist_ptr[i*PW_HISTORY_ENTRY_LEN], PW_HISTORY_ENTRY_LEN); } } if (!pdb_set_pw_history(sampass, pw_hist, pwHistLen, PDB_SET)) { SAFE_FREE(pw_hist); ret = False; goto done; } SAFE_FREE(pw_hist); } else { pdb_set_pw_history(sampass, NULL, 0, PDB_SET); } pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET); pdb_set_hours_len(sampass, hours_len, PDB_SET); pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET); pdb_set_logon_count(sampass, logon_count, PDB_SET); pdb_set_unknown_6(sampass, unknown_6, PDB_SET); /* Change from V2 is the uint32 acct_ctrl */ pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET); pdb_set_logon_divs(sampass, logon_divs, PDB_SET); pdb_set_hours(sampass, hours, PDB_SET); done: SAFE_FREE(username); SAFE_FREE(domain); SAFE_FREE(nt_username); SAFE_FREE(fullname); SAFE_FREE(homedir); SAFE_FREE(dir_drive); SAFE_FREE(logon_script); SAFE_FREE(profile_path); SAFE_FREE(acct_desc); SAFE_FREE(workstations); SAFE_FREE(munged_dial); SAFE_FREE(unknown_str); SAFE_FREE(lm_pw_ptr); SAFE_FREE(nt_pw_ptr); SAFE_FREE(nt_pw_hist_ptr); SAFE_FREE(hours); return ret; } /********************************************************************* *********************************************************************/ uint32 init_buffer_from_sam_v3 (uint8 **buf, struct samu *sampass, BOOL size_only) { size_t len, buflen; /* times are stored as 32bit integer take care on system with 64bit wide time_t --SSS */ uint32 logon_time, logoff_time, kickoff_time, bad_password_time, pass_last_set_time, pass_can_change_time, pass_must_change_time; uint32 user_rid, group_rid; const char *username; const char *domain; const char *nt_username; const char *dir_drive; const char *unknown_str; const char *munged_dial; const char *fullname; const char *homedir; const char *logon_script; const char *profile_path; const char *acct_desc; const char *workstations; uint32 username_len, domain_len, nt_username_len, dir_drive_len, unknown_str_len, munged_dial_len, fullname_len, homedir_len, logon_script_len, profile_path_len, acct_desc_len, workstations_len; const uint8 *lm_pw; const uint8 *nt_pw; const uint8 *nt_pw_hist; uint32 lm_pw_len = 16; uint32 nt_pw_len = 16; uint32 nt_pw_hist_len; uint32 pwHistLen = 0; *buf = NULL; buflen = 0; logon_time = convert_time_t_to_uint32(pdb_get_logon_time(sampass)); logoff_time = convert_time_t_to_uint32(pdb_get_logoff_time(sampass)); kickoff_time = convert_time_t_to_uint32(pdb_get_kickoff_time(sampass)); bad_password_time = convert_time_t_to_uint32(pdb_get_bad_password_time(sampass)); pass_can_change_time = convert_time_t_to_uint32(pdb_get_pass_can_change_time_noncalc(sampass)); pass_must_change_time = convert_time_t_to_uint32(pdb_get_pass_must_change_time(sampass)); pass_last_set_time = convert_time_t_to_uint32(pdb_get_pass_last_set_time(sampass)); user_rid = pdb_get_user_rid(sampass); group_rid = pdb_get_group_rid(sampass); username = pdb_get_username(sampass); if (username) { username_len = strlen(username) +1; } else { username_len = 0; } domain = pdb_get_domain(sampass); if (domain) { domain_len = strlen(domain) +1; } else { domain_len = 0; } nt_username = pdb_get_nt_username(sampass); if (nt_username) { nt_username_len = strlen(nt_username) +1; } else { nt_username_len = 0; } fullname = pdb_get_fullname(sampass); if (fullname) { fullname_len = strlen(fullname) +1; } else { fullname_len = 0; } /* * Only updates fields which have been set (not defaults from smb.conf) */ if (!IS_SAM_DEFAULT(sampass, PDB_DRIVE)) { dir_drive = pdb_get_dir_drive(sampass); } else { dir_drive = NULL; } if (dir_drive) { dir_drive_len = strlen(dir_drive) +1; } else { dir_drive_len = 0; } if (!IS_SAM_DEFAULT(sampass, PDB_SMBHOME)) { homedir = pdb_get_homedir(sampass); } else { homedir = NULL; } if (homedir) { homedir_len = strlen(homedir) +1; } else { homedir_len = 0; } if (!IS_SAM_DEFAULT(sampass, PDB_LOGONSCRIPT)) { logon_script = pdb_get_logon_script(sampass); } else { logon_script = NULL; } if (logon_script) { logon_script_len = strlen(logon_script) +1; } else { logon_script_len = 0; } if (!IS_SAM_DEFAULT(sampass, PDB_PROFILE)) { profile_path = pdb_get_profile_path(sampass); } else { profile_path = NULL; } if (profile_path) { profile_path_len = strlen(profile_path) +1; } else { profile_path_len = 0; } lm_pw = pdb_get_lanman_passwd(sampass); if (!lm_pw) { lm_pw_len = 0; } nt_pw = pdb_get_nt_passwd(sampass); if (!nt_pw) { nt_pw_len = 0; } pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen); nt_pw_hist = pdb_get_pw_history(sampass, &nt_pw_hist_len); if (pwHistLen && nt_pw_hist && nt_pw_hist_len) { nt_pw_hist_len *= PW_HISTORY_ENTRY_LEN; } else { nt_pw_hist_len = 0; } acct_desc = pdb_get_acct_desc(sampass); if (acct_desc) { acct_desc_len = strlen(acct_desc) +1; } else { acct_desc_len = 0; } workstations = pdb_get_workstations(sampass); if (workstations) { workstations_len = strlen(workstations) +1; } else { workstations_len = 0; } unknown_str = NULL; unknown_str_len = 0; munged_dial = pdb_get_munged_dial(sampass); if (munged_dial) { munged_dial_len = strlen(munged_dial) +1; } else { munged_dial_len = 0; } /* TDB_FORMAT_STRING_V3 "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */ /* one time to get the size needed */ len = tdb_pack(NULL, 0, TDB_FORMAT_STRING_V3, logon_time, /* d */ logoff_time, /* d */ kickoff_time, /* d */ bad_password_time, /* d */ pass_last_set_time, /* d */ pass_can_change_time, /* d */ pass_must_change_time, /* d */ username_len, username, /* B */ domain_len, domain, /* B */ nt_username_len, nt_username, /* B */ fullname_len, fullname, /* B */ homedir_len, homedir, /* B */ dir_drive_len, dir_drive, /* B */ logon_script_len, logon_script, /* B */ profile_path_len, profile_path, /* B */ acct_desc_len, acct_desc, /* B */ workstations_len, workstations, /* B */ unknown_str_len, unknown_str, /* B */ munged_dial_len, munged_dial, /* B */ user_rid, /* d */ group_rid, /* d */ lm_pw_len, lm_pw, /* B */ nt_pw_len, nt_pw, /* B */ nt_pw_hist_len, nt_pw_hist, /* B */ pdb_get_acct_ctrl(sampass), /* d */ pdb_get_logon_divs(sampass), /* w */ pdb_get_hours_len(sampass), /* d */ MAX_HOURS_LEN, pdb_get_hours(sampass), /* B */ pdb_get_bad_password_count(sampass), /* w */ pdb_get_logon_count(sampass), /* w */ pdb_get_unknown_6(sampass)); /* d */ if (size_only) { return buflen; } /* malloc the space needed */ if ( (*buf=(uint8*)SMB_MALLOC(len)) == NULL) { DEBUG(0,("init_buffer_from_sam_v3: Unable to malloc() memory for buffer!\n")); return (-1); } /* now for the real call to tdb_pack() */ buflen = tdb_pack(*buf, len, TDB_FORMAT_STRING_V3, logon_time, /* d */ logoff_time, /* d */ kickoff_time, /* d */ bad_password_time, /* d */ pass_last_set_time, /* d */ pass_can_change_time, /* d */ pass_must_change_time, /* d */ username_len, username, /* B */ domain_len, domain, /* B */ nt_username_len, nt_username, /* B */ fullname_len, fullname, /* B */ homedir_len, homedir, /* B */ dir_drive_len, dir_drive, /* B */ logon_script_len, logon_script, /* B */ profile_path_len, profile_path, /* B */ acct_desc_len, acct_desc, /* B */ workstations_len, workstations, /* B */ unknown_str_len, unknown_str, /* B */ munged_dial_len, munged_dial, /* B */ user_rid, /* d */ group_rid, /* d */ lm_pw_len, lm_pw, /* B */ nt_pw_len, nt_pw, /* B */ nt_pw_hist_len, nt_pw_hist, /* B */ pdb_get_acct_ctrl(sampass), /* d */ pdb_get_logon_divs(sampass), /* w */ pdb_get_hours_len(sampass), /* d */ MAX_HOURS_LEN, pdb_get_hours(sampass), /* B */ pdb_get_bad_password_count(sampass), /* w */ pdb_get_logon_count(sampass), /* w */ pdb_get_unknown_6(sampass)); /* d */ /* check to make sure we got it correct */ if (buflen != len) { DEBUG(0, ("init_buffer_from_sam_v3: somthing odd is going on here: bufflen (%lu) != len (%lu) in tdb_pack operations!\n", (unsigned long)buflen, (unsigned long)len)); /* error */ SAFE_FREE (*buf); return (-1); } return (buflen); } /********************************************************************* *********************************************************************/ BOOL pdb_copy_sam_account(struct samu *dst, struct samu *src ) { uint8 *buf = NULL; int len; len = init_buffer_from_sam_v3(&buf, src, False); if (len == -1 || !buf) { SAFE_FREE(buf); return False; } if (!init_sam_from_buffer_v3( dst, buf, len )) { free(buf); return False; } dst->methods = src->methods; if ( src->unix_pw ) { dst->unix_pw = tcopy_passwd( dst, src->unix_pw ); if (!dst->unix_pw) { free(buf); return False; } } free(buf); return True; } /********************************************************************* Update the bad password count checking the AP_RESET_COUNT_TIME *********************************************************************/ BOOL pdb_update_bad_password_count(struct samu *sampass, BOOL *updated) { time_t LastBadPassword; uint16 BadPasswordCount; uint32 resettime; BOOL res; BadPasswordCount = pdb_get_bad_password_count(sampass); if (!BadPasswordCount) { DEBUG(9, ("No bad password attempts.\n")); return True; } become_root(); res = pdb_get_account_policy(AP_RESET_COUNT_TIME, &resettime); unbecome_root(); if (!res) { DEBUG(0, ("pdb_update_bad_password_count: pdb_get_account_policy failed.\n")); return False; } /* First, check if there is a reset time to compare */ if ((resettime == (uint32) -1) || (resettime == 0)) { DEBUG(9, ("No reset time, can't reset bad pw count\n")); return True; } LastBadPassword = pdb_get_bad_password_time(sampass); DEBUG(7, ("LastBadPassword=%d, resettime=%d, current time=%d.\n", (uint32) LastBadPassword, resettime, (uint32)time(NULL))); if (time(NULL) > (LastBadPassword + convert_uint32_to_time_t(resettime)*60)){ pdb_set_bad_password_count(sampass, 0, PDB_CHANGED); pdb_set_bad_password_time(sampass, 0, PDB_CHANGED); if (updated) { *updated = True; } } return True; } /********************************************************************* Update the ACB_AUTOLOCK flag checking the AP_LOCK_ACCOUNT_DURATION *********************************************************************/ BOOL pdb_update_autolock_flag(struct samu *sampass, BOOL *updated) { uint32 duration; time_t LastBadPassword; BOOL res; if (!(pdb_get_acct_ctrl(sampass) & ACB_AUTOLOCK)) { DEBUG(9, ("pdb_update_autolock_flag: Account %s not autolocked, no check needed\n", pdb_get_username(sampass))); return True; } become_root(); res = pdb_get_account_policy(AP_LOCK_ACCOUNT_DURATION, &duration); unbecome_root(); if (!res) { DEBUG(0, ("pdb_update_autolock_flag: pdb_get_account_policy failed.\n")); return False; } /* First, check if there is a duration to compare */ if ((duration == (uint32) -1) || (duration == 0)) { DEBUG(9, ("pdb_update_autolock_flag: No reset duration, can't reset autolock\n")); return True; } LastBadPassword = pdb_get_bad_password_time(sampass); DEBUG(7, ("pdb_update_autolock_flag: Account %s, LastBadPassword=%d, duration=%d, current time =%d.\n", pdb_get_username(sampass), (uint32)LastBadPassword, duration*60, (uint32)time(NULL))); if (LastBadPassword == (time_t)0) { DEBUG(1,("pdb_update_autolock_flag: Account %s " "administratively locked out with no bad password " "time. Leaving locked out.\n", pdb_get_username(sampass) )); return True; } if ((time(NULL) > (LastBadPassword + convert_uint32_to_time_t(duration) * 60))) { pdb_set_acct_ctrl(sampass, pdb_get_acct_ctrl(sampass) & ~ACB_AUTOLOCK, PDB_CHANGED); pdb_set_bad_password_count(sampass, 0, PDB_CHANGED); pdb_set_bad_password_time(sampass, 0, PDB_CHANGED); if (updated) { *updated = True; } } return True; } /********************************************************************* Increment the bad_password_count *********************************************************************/ BOOL pdb_increment_bad_password_count(struct samu *sampass) { uint32 account_policy_lockout; BOOL autolock_updated = False, badpw_updated = False; BOOL ret; /* Retrieve the account lockout policy */ become_root(); ret = pdb_get_account_policy(AP_BAD_ATTEMPT_LOCKOUT, &account_policy_lockout); unbecome_root(); if ( !ret ) { DEBUG(0, ("pdb_increment_bad_password_count: pdb_get_account_policy failed.\n")); return False; } /* If there is no policy, we don't need to continue checking */ if (!account_policy_lockout) { DEBUG(9, ("No lockout policy, don't track bad passwords\n")); return True; } /* Check if the autolock needs to be cleared */ if (!pdb_update_autolock_flag(sampass, &autolock_updated)) return False; /* Check if the badpw count needs to be reset */ if (!pdb_update_bad_password_count(sampass, &badpw_updated)) return False; /* Ok, now we can assume that any resetting that needs to be done has been done, and just get on with incrementing and autolocking if necessary */ pdb_set_bad_password_count(sampass, pdb_get_bad_password_count(sampass)+1, PDB_CHANGED); pdb_set_bad_password_time(sampass, time(NULL), PDB_CHANGED); if (pdb_get_bad_password_count(sampass) < account_policy_lockout) return True; if (!pdb_set_acct_ctrl(sampass, pdb_get_acct_ctrl(sampass) | ACB_AUTOLOCK, PDB_CHANGED)) { DEBUG(1, ("pdb_increment_bad_password_count:failed to set 'autolock' flag. \n")); return False; } return True; } /******************************************************************* Wrapper around retrieving the trust account password *******************************************************************/ BOOL get_trust_pw(const char *domain, uint8 ret_pwd[16], uint32 *channel) { DOM_SID sid; char *pwd; time_t last_set_time; /* if we are a DC and this is not our domain, then lookup an account for the domain trust */ if (IS_DC && !strequal(domain, lp_workgroup()) && lp_allow_trusted_domains()) { if (!pdb_get_trusteddom_pw(domain, &pwd, &sid, &last_set_time)) { DEBUG(0, ("get_trust_pw: could not fetch trust " "account password for trusted domain %s\n", domain)); return False; } *channel = SEC_CHAN_DOMAIN; E_md4hash(pwd, ret_pwd); SAFE_FREE(pwd); return True; } /* Just get the account for the requested domain. In the future this * might also cover to be member of more than one domain. */ if (secrets_fetch_trust_account_password(domain, ret_pwd, &last_set_time, channel)) return True; DEBUG(5, ("get_trust_pw: could not fetch trust account " "password for domain %s\n", domain)); return False; }