/*
- Unix SMB/Netbios implementation.
- Version 1.9.
+ Unix SMB/CIFS implementation.
Password and authentication handling
Copyright (C) Andrew Tridgell 1992-2000
Copyright (C) Luke Kenneth Casson Leighton 1996-2000
Copyright (C) Andrew Bartlett 2001
+ Copyright (C) Gerald Carter 2003
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
#include "includes.h"
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
/****************************************************************************
-core of smb password checking routine.
+ Core of smb password checking routine.
****************************************************************************/
-static BOOL smb_pwd_check_ntlmv1(DATA_BLOB nt_response,
+
+static BOOL smb_pwd_check_ntlmv1(const DATA_BLOB *nt_response,
const uchar *part_passwd,
- DATA_BLOB sec_blob,
+ const DATA_BLOB *sec_blob,
uint8 user_sess_key[16])
{
/* Finish the encryption of part_passwd. */
return False;
}
- if (sec_blob.length != 8) {
- DEBUG(0, ("smb_pwd_check_ntlmv1: incorrect challenge size (%d)\n", sec_blob.length));
+ if (sec_blob->length != 8) {
+ DEBUG(0, ("smb_pwd_check_ntlmv1: incorrect challenge size (%lu)\n", (unsigned long)sec_blob->length));
return False;
}
- if (nt_response.length != 24) {
- DEBUG(0, ("smb_pwd_check_ntlmv1: incorrect password length (%d)\n", nt_response.length));
+ if (nt_response->length != 24) {
+ DEBUG(0, ("smb_pwd_check_ntlmv1: incorrect password length (%lu)\n", (unsigned long)nt_response->length));
return False;
}
- SMBOWFencrypt(part_passwd, sec_blob.data, p24);
- if (user_sess_key != NULL)
- {
+ SMBOWFencrypt(part_passwd, sec_blob->data, p24);
+ if (user_sess_key != NULL) {
SMBsesskeygen_ntv1(part_passwd, NULL, user_sess_key);
}
#if DEBUG_PASSWORD
- DEBUG(100,("Part password (P16) was |"));
+ DEBUG(100,("Part password (P16) was |\n"));
dump_data(100, part_passwd, 16);
- DEBUG(100,("Password from client was |"));
- dump_data(100, nt_response.data, nt_response.length);
- DEBUG(100,("Given challenge was |"));
- dump_data(100, sec_blob.data, sec_blob.length);
- DEBUG(100,("Value from encryption was |"));
+ DEBUGADD(100,("Password from client was |\n"));
+ dump_data(100, nt_response->data, nt_response->length);
+ DEBUGADD(100,("Given challenge was |\n"));
+ dump_data(100, sec_blob->data, sec_blob->length);
+ DEBUGADD(100,("Value from encryption was |\n"));
dump_data(100, p24, 24);
#endif
- return (memcmp(p24, nt_response.data, 24) == 0);
+ return (memcmp(p24, nt_response->data, 24) == 0);
}
/****************************************************************************
-core of smb password checking routine.
+ Core of smb password checking routine. (NTLMv2, LMv2)
+ Note: The same code works with both NTLMv2 and LMv2.
****************************************************************************/
-static BOOL smb_pwd_check_ntlmv2(const DATA_BLOB ntv2_response,
+
+static BOOL smb_pwd_check_ntlmv2(const DATA_BLOB *ntv2_response,
const uchar *part_passwd,
- const DATA_BLOB sec_blob,
+ const DATA_BLOB *sec_blob,
const char *user, const char *domain,
uint8 user_sess_key[16])
{
uchar client_response[16];
DATA_BLOB client_key_data;
- if (part_passwd == NULL)
- {
+ if (part_passwd == NULL) {
DEBUG(10,("No password set - DISALLOWING access\n"));
/* No password set - always False */
return False;
}
- if (ntv2_response.length < 16) {
+ if (ntv2_response->length < 24) {
/* We MUST have more than 16 bytes, or the stuff below will go
- crazy... */
- DEBUG(0, ("smb_pwd_check_ntlmv2: incorrect password length (%d)\n",
- ntv2_response.length));
+ crazy. No known implementation sends less than the 24 bytes
+ for LMv2, let alone NTLMv2. */
+ DEBUG(0, ("smb_pwd_check_ntlmv2: incorrect password length (%lu)\n",
+ (unsigned long)ntv2_response->length));
return False;
}
- client_key_data = data_blob(ntv2_response.data+16, ntv2_response.length-16);
- memcpy(client_response, ntv2_response.data, sizeof(client_response));
+ client_key_data = data_blob(ntv2_response->data+16, ntv2_response->length-16);
+ /*
+ todo: should we be checking this for anything? We can't for LMv2,
+ but for NTLMv2 it is meant to contain the current time etc.
+ */
+
+ memcpy(client_response, ntv2_response->data, sizeof(client_response));
- ntv2_owf_gen(part_passwd, user, domain, kr);
- SMBOWFencrypt_ntv2(kr, sec_blob, client_key_data, (char *)value_from_encryption);
- if (user_sess_key != NULL)
- {
+ if (!ntv2_owf_gen(part_passwd, user, domain, kr)) {
+ return False;
+ }
+
+ SMBOWFencrypt_ntv2(kr, sec_blob, &client_key_data, value_from_encryption);
+ if (user_sess_key != NULL) {
SMBsesskeygen_ntv2(kr, value_from_encryption, user_sess_key);
}
#if DEBUG_PASSWORD
- DEBUG(100,("Part password (P16) was |"));
+ DEBUG(100,("Part password (P16) was |\n"));
dump_data(100, part_passwd, 16);
- DEBUG(100,("Password from client was |"));
- dump_data(100, ntv2_response.data, ntv2_response.length);
- DEBUG(100,("Variable data from client was |"));
+ DEBUGADD(100,("Password from client was |\n"));
+ dump_data(100, ntv2_response->data, ntv2_response->length);
+ DEBUGADD(100,("Variable data from client was |\n"));
dump_data(100, client_key_data.data, client_key_data.length);
- DEBUG(100,("Given challenge was |"));
- dump_data(100, sec_blob.data, sec_blob.length);
- DEBUG(100,("Value from encryption was |"));
+ DEBUGADD(100,("Given challenge was |\n"));
+ dump_data(100, sec_blob->data, sec_blob->length);
+ DEBUGADD(100,("Value from encryption was |\n"));
dump_data(100, value_from_encryption, 16);
#endif
data_blob_clear_free(&client_key_data);
return (memcmp(value_from_encryption, client_response, 16) == 0);
}
-
/****************************************************************************
Do a specific test for an smb password being correct, given a smb_password and
the lanman and NT responses.
****************************************************************************/
+
static NTSTATUS sam_password_ok(const struct auth_context *auth_context,
TALLOC_CTX *mem_ctx,
SAM_ACCOUNT *sampass,
uint32 auth_flags;
acct_ctrl = pdb_get_acct_ctrl(sampass);
- if (acct_ctrl & ACB_PWNOTREQ)
- {
- if (lp_null_passwords())
- {
+ if (acct_ctrl & ACB_PWNOTREQ) {
+ if (lp_null_passwords()) {
DEBUG(3,("Account for user '%s' has no password and null passwords are allowed.\n", pdb_get_username(sampass)));
return(NT_STATUS_OK);
- }
- else
- {
+ } else {
DEBUG(3,("Account for user '%s' has no password and null passwords are NOT allowed.\n", pdb_get_username(sampass)));
return(NT_STATUS_LOGON_FAILURE);
}
}
- nt_pw = pdb_get_nt_passwd(sampass);
- lm_pw = pdb_get_lanman_passwd(sampass);
-
auth_flags = user_info->auth_flags;
- if (nt_pw == NULL) {
+ if (IS_SAM_DEFAULT(sampass, PDB_NTPASSWD)) {
DEBUG(3,("sam_password_ok: NO NT password stored for user %s.\n",
pdb_get_username(sampass)));
/* No return, we want to check the LM hash below in this case */
}
if (auth_flags & AUTH_FLAG_NTLMv2_RESP) {
+ nt_pw = pdb_get_nt_passwd(sampass);
/* We have the NT MD4 hash challenge available - see if we can
use it (ie. does it exist in the smbpasswd file).
*/
- DEBUG(4,("sam_password_ok: Checking NTLMv2 password\n"));
- if (smb_pwd_check_ntlmv2( user_info->nt_resp,
- nt_pw, auth_context->challenge,
+ DEBUG(4,("sam_password_ok: Checking NTLMv2 password with domain [%s]\n", user_info->client_domain.str));
+ if (smb_pwd_check_ntlmv2( &user_info->nt_resp,
+ nt_pw, &auth_context->challenge,
user_info->smb_name.str,
user_info->client_domain.str,
- user_sess_key))
- {
+ user_sess_key)) {
+ return NT_STATUS_OK;
+ }
+
+ DEBUG(4,("sam_password_ok: Checking NTLMv2 password without a domain\n"));
+ if (smb_pwd_check_ntlmv2( &user_info->nt_resp,
+ nt_pw, &auth_context->challenge,
+ user_info->smb_name.str,
+ "",
+ user_sess_key)) {
return NT_STATUS_OK;
} else {
DEBUG(3,("sam_password_ok: NTLMv2 password check failed\n"));
return NT_STATUS_WRONG_PASSWORD;
}
} else if (auth_flags & AUTH_FLAG_NTLM_RESP) {
- if (lp_ntlm_auth()) {
+ if (lp_ntlm_auth()) {
+ nt_pw = pdb_get_nt_passwd(sampass);
/* We have the NT MD4 hash challenge available - see if we can
use it (ie. does it exist in the smbpasswd file).
*/
DEBUG(4,("sam_password_ok: Checking NT MD4 password\n"));
- if (smb_pwd_check_ntlmv1(user_info->nt_resp,
- nt_pw, auth_context->challenge,
- user_sess_key))
- {
+ if (smb_pwd_check_ntlmv1(&user_info->nt_resp,
+ nt_pw, &auth_context->challenge,
+ user_sess_key)) {
return NT_STATUS_OK;
} else {
DEBUG(3,("sam_password_ok: NT MD4 password check failed for user %s\n",pdb_get_username(sampass)));
}
} else {
DEBUG(2,("sam_password_ok: NTLMv1 passwords NOT PERMITTED for user %s\n",pdb_get_username(sampass)));
- /* No return, we want to check the LM hash below in this case */
+ /* no return, becouse we might pick up LMv2 in the LM field */
}
}
- if (lm_pw == NULL) {
- DEBUG(3,("sam_password_ok: NO LanMan password set for user %s (and no NT password supplied)\n",pdb_get_username(sampass)));
- auth_flags &= (~AUTH_FLAG_LM_RESP);
- }
-
if (auth_flags & AUTH_FLAG_LM_RESP) {
-
if (user_info->lm_resp.length != 24) {
- DEBUG(2,("sam_password_ok: invalid LanMan password length (%d) for user %s\n",
- user_info->nt_resp.length, pdb_get_username(sampass)));
+ DEBUG(2,("sam_password_ok: invalid LanMan password length (%lu) for user %s\n",
+ (unsigned long)user_info->nt_resp.length, pdb_get_username(sampass)));
}
if (!lp_lanman_auth()) {
- DEBUG(3,("sam_password_ok: Lanman passwords NOT PERMITTED for user %s\n",pdb_get_username(sampass)));
- return NT_STATUS_LOGON_FAILURE;
+ DEBUG(3,("sam_password_ok: Lanman passwords NOT PERMITTED for user %s\n",pdb_get_username(sampass)));
+ } else if (IS_SAM_DEFAULT(sampass, PDB_LMPASSWD)) {
+ DEBUG(3,("sam_password_ok: NO LanMan password set for user %s (and no NT password supplied)\n",pdb_get_username(sampass)));
+ } else {
+ lm_pw = pdb_get_lanman_passwd(sampass);
+
+ DEBUG(4,("sam_password_ok: Checking LM password\n"));
+ if (smb_pwd_check_ntlmv1(&user_info->lm_resp,
+ lm_pw, &auth_context->challenge,
+ user_sess_key)) {
+ return NT_STATUS_OK;
+ }
}
+
+ if (IS_SAM_DEFAULT(sampass, PDB_NTPASSWD)) {
+ DEBUG(4,("sam_password_ok: LM password check failed for user, no NT password %s\n",pdb_get_username(sampass)));
+ return NT_STATUS_WRONG_PASSWORD;
+ }
- DEBUG(4,("sam_password_ok: Checking LM password\n"));
- if (smb_pwd_check_ntlmv1(user_info->lm_resp,
- lm_pw, auth_context->challenge,
- user_sess_key))
- {
+ nt_pw = pdb_get_nt_passwd(sampass);
+
+ /* This is for 'LMv2' authentication. almost NTLMv2 but limited to 24 bytes.
+ - related to Win9X, legacy NAS pass-though authentication
+ */
+ DEBUG(4,("sam_password_ok: Checking LMv2 password with domain %s\n", user_info->client_domain.str));
+ if (smb_pwd_check_ntlmv2( &user_info->lm_resp,
+ nt_pw, &auth_context->challenge,
+ user_info->smb_name.str,
+ user_info->client_domain.str,
+ user_sess_key)) {
return NT_STATUS_OK;
+ }
+
+ DEBUG(4,("sam_password_ok: Checking LMv2 password without a domain\n"));
+ if (smb_pwd_check_ntlmv2( &user_info->lm_resp,
+ nt_pw, &auth_context->challenge,
+ user_info->smb_name.str,
+ "",
+ user_sess_key)) {
+ return NT_STATUS_OK;
+ }
+
+ /* Apparently NT accepts NT responses in the LM field
+ - I think this is related to Win9X pass-though authentication
+ */
+ DEBUG(4,("sam_password_ok: Checking NT MD4 password in LM field\n"));
+ if (lp_ntlm_auth()) {
+ if (smb_pwd_check_ntlmv1(&user_info->lm_resp,
+ nt_pw, &auth_context->challenge,
+ user_sess_key)) {
+ return NT_STATUS_OK;
+ }
+ DEBUG(3,("sam_password_ok: LM password, NT MD4 password in LM field and LMv2 failed for user %s\n",pdb_get_username(sampass)));
+ return NT_STATUS_WRONG_PASSWORD;
} else {
- DEBUG(4,("sam_password_ok: LM password check failed for user %s\n",pdb_get_username(sampass)));
+ DEBUG(3,("sam_password_ok: LM password and LMv2 failed for user %s, and NT MD4 password in LM field not permitted\n",pdb_get_username(sampass)));
return NT_STATUS_WRONG_PASSWORD;
- }
+ }
+
}
-
+
/* Should not be reached, but if they send nothing... */
DEBUG(3,("sam_password_ok: NEITHER LanMan nor NT password supplied for user %s\n",pdb_get_username(sampass)));
return NT_STATUS_WRONG_PASSWORD;
Do a specific test for a SAM_ACCOUNT being vaild for this connection
(ie not disabled, expired and the like).
****************************************************************************/
+
static NTSTATUS sam_account_ok(TALLOC_CTX *mem_ctx,
SAM_ACCOUNT *sampass,
const auth_usersupplied_info *user_info)
/* Quit if the account was disabled. */
if (acct_ctrl & ACB_DISABLED) {
- DEBUG(1,("Account for user '%s' was disabled.\n", pdb_get_username(sampass)));
+ DEBUG(1,("sam_account_ok: Account for user '%s' was disabled.\n", pdb_get_username(sampass)));
return NT_STATUS_ACCOUNT_DISABLED;
}
+ /* Quit if the account was locked out. */
+ if (acct_ctrl & ACB_AUTOLOCK) {
+ DEBUG(1,("sam_account_ok: Account for user %s was locked out.\n", pdb_get_username(sampass)));
+ return NT_STATUS_ACCOUNT_LOCKED_OUT;
+ }
+
/* Test account expire time */
kickoff_time = pdb_get_kickoff_time(sampass);
if (kickoff_time != 0 && time(NULL) > kickoff_time) {
- DEBUG(1,("Account for user '%s' has expried.\n", pdb_get_username(sampass)));
- DEBUG(3,("Account expired at '%ld' unix time.\n", (long)kickoff_time));
+ DEBUG(1,("sam_account_ok: Account for user '%s' has expired.\n", pdb_get_username(sampass)));
+ DEBUG(3,("sam_account_ok: Account expired at '%ld' unix time.\n", (long)kickoff_time));
return NT_STATUS_ACCOUNT_EXPIRED;
}
/* check for immediate expiry "must change at next logon" */
if (must_change_time == 0 && last_set_time != 0) {
- DEBUG(1,("Account for user '%s' password must change!.\n", pdb_get_username(sampass)));
+ DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n", pdb_get_username(sampass)));
return NT_STATUS_PASSWORD_MUST_CHANGE;
}
/* check for expired password */
if (must_change_time < time(NULL) && must_change_time != 0) {
- DEBUG(1,("Account for user '%s' password expired!.\n", pdb_get_username(sampass)));
- DEBUG(1,("Password expired at '%s' (%ld) unix time.\n", http_timestring(must_change_time), (long)must_change_time));
+ DEBUG(1,("sam_account_ok: Account for user '%s' password expired!.\n", pdb_get_username(sampass)));
+ DEBUG(1,("sam_account_ok: Password expired at '%s' (%ld) unix time.\n", http_timestring(must_change_time), (long)must_change_time));
return NT_STATUS_PASSWORD_EXPIRED;
}
}
/* Test workstation. Workstation list is comma separated. */
workstation_list = talloc_strdup(mem_ctx, pdb_get_workstations(sampass));
-
- if (!workstation_list) return NT_STATUS_NO_MEMORY;
+ if (!workstation_list)
+ return NT_STATUS_NO_MEMORY;
if (*workstation_list) {
BOOL invalid_ws = True;
- char *s = workstation_list;
+ const char *s = workstation_list;
fstring tok;
while (next_token(&s, tok, ",", sizeof(tok))) {
- DEBUG(10,("checking for workstation match %s and %s (len=%d)\n",
+ DEBUG(10,("sam_account_ok: checking for workstation match %s and %s (len=%d)\n",
tok, user_info->wksta_name.str, user_info->wksta_name.len));
if(strequal(tok, user_info->wksta_name.str)) {
invalid_ws = False;
return NT_STATUS_OK;
}
-
/****************************************************************************
check if a username/password is OK assuming the password is a 24 byte
SMB hash supplied in the user_info structure
return NT_STATUS_UNSUCCESSFUL;
}
- /* Can't use the talloc version here, becouse the returned struct gets
+ /* Can't use the talloc version here, because the returned struct gets
kept on the server_info */
if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(&sampass))) {
return nt_status;
ret = pdb_getsampwnam(sampass, user_info->internal_username.str);
unbecome_root();
- if (ret == False)
- {
- DEBUG(1,("Couldn't find user '%s' in passdb file.\n", user_info->internal_username.str));
+ if (ret == False) {
+ DEBUG(3,("check_sam_security: Couldn't find user '%s' in passdb file.\n", user_info->internal_username.str));
pdb_free_sam(&sampass);
return NT_STATUS_NO_SUCH_USER;
}
nt_status = sam_password_ok(auth_context, mem_ctx, sampass, user_info, user_sess_key);
-
+
if (!NT_STATUS_IS_OK(nt_status)) {
pdb_free_sam(&sampass);
return nt_status;
}
nt_status = sam_account_ok(mem_ctx, sampass, user_info);
-
+
if (!NT_STATUS_IS_OK(nt_status)) {
pdb_free_sam(&sampass);
return nt_status;
}
- if (!make_server_info_sam(server_info, sampass)) {
- DEBUG(0,("failed to malloc memory for server_info\n"));
- return NT_STATUS_NO_MEMORY;
+ if (!NT_STATUS_IS_OK(nt_status = make_server_info_sam(server_info, sampass))) {
+ DEBUG(0,("check_sam_security: make_server_info_sam() failed with '%s'\n", nt_errstr(nt_status)));
+ return nt_status;
}
lm_hash = pdb_get_lanman_passwd((*server_info)->sam_account);
}
/* module initialisation */
-BOOL auth_init_sam(struct auth_context *auth_context, auth_methods **auth_method)
+static NTSTATUS auth_init_sam_ignoredomain(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
{
if (!make_auth_methods(auth_context, auth_method)) {
- return False;
+ return NT_STATUS_NO_MEMORY;
}
- (*auth_method)->auth = check_sam_security;
- return True;
+ (*auth_method)->auth = check_sam_security;
+ (*auth_method)->name = "sam_ignoredomain";
+ return NT_STATUS_OK;
}
const auth_usersupplied_info *user_info,
auth_serversupplied_info **server_info)
{
+ BOOL is_local_name, is_my_domain;
if (!user_info || !auth_context) {
return NT_STATUS_LOGON_FAILURE;
}
- /* If we are a domain member, we must not
- attempt to check the password locally,
- unless it is one of our aliases. */
+ is_local_name = is_myname(user_info->domain.str);
+ is_my_domain = strequal(user_info->domain.str, lp_workgroup());
+
+ /* check whether or not we service this domain/workgroup name */
- if (!is_netbios_alias_or_name(user_info->domain.str)) {
- return NT_STATUS_NO_SUCH_USER;
+ switch ( lp_server_role() ) {
+ case ROLE_STANDALONE:
+ case ROLE_DOMAIN_MEMBER:
+ if ( !is_local_name ) {
+ DEBUG(6,("check_samstrict_security: %s is not one of my local names (%s)\n",
+ user_info->domain.str, (lp_server_role() == ROLE_DOMAIN_MEMBER
+ ? "ROLE_DOMAIN_MEMBER" : "ROLE_STANDALONE") ));
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+ case ROLE_DOMAIN_PDC:
+ case ROLE_DOMAIN_BDC:
+ if ( !is_local_name && !is_my_domain ) {
+ DEBUG(6,("check_samstrict_security: %s is not one of my local names or domain name (DC)\n",
+ user_info->domain.str));
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+ default: /* name is ok */
+ break;
}
return check_sam_security(auth_context, my_private_data, mem_ctx, user_info, server_info);
}
/* module initialisation */
-BOOL auth_init_samstrict(struct auth_context *auth_context, auth_methods **auth_method)
+static NTSTATUS auth_init_sam(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
{
if (!make_auth_methods(auth_context, auth_method)) {
- return False;
+ return NT_STATUS_NO_MEMORY;
}
(*auth_method)->auth = check_samstrict_security;
- return True;
+ (*auth_method)->name = "sam";
+ return NT_STATUS_OK;
}
-
+NTSTATUS auth_sam_init(void)
+{
+ smb_register_auth(AUTH_INTERFACE_VERSION, "sam", auth_init_sam);
+ smb_register_auth(AUTH_INTERFACE_VERSION, "sam_ignoredomain", auth_init_sam_ignoredomain);
+ return NT_STATUS_OK;
+}
git.samba.org / bbaumbach / samba-autobuild / .git / blobdiff