/*
- 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
#include "includes.h"
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
/****************************************************************************
core of smb password checking routine.
****************************************************************************/
static BOOL smb_pwd_check_ntlmv1(DATA_BLOB nt_response,
- const uchar *part_passwd,
- DATA_BLOB sec_blob,
- uint8 user_sess_key[16])
+ const uchar *part_passwd,
+ DATA_BLOB sec_blob,
+ uint8 user_sess_key[16])
{
/* Finish the encryption of part_passwd. */
uchar p24[24];
}
if (sec_blob.length != 8) {
- DEBUG(0, ("smb_pwd_check_ntlmv1: incorrect challange size (%d)\n", sec_blob.length));
+ DEBUG(0, ("smb_pwd_check_ntlmv1: incorrect challenge size (%d)\n", sec_blob.length));
return False;
}
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,
- const uchar *part_passwd,
- const DATA_BLOB sec_blob,
- const char *user, const char *domain,
- uint8 user_sess_key[16])
+ const uchar *part_passwd,
+ const DATA_BLOB sec_blob,
+ const char *user, const char *domain,
+ uint8 user_sess_key[16])
{
/* Finish the encryption of part_passwd. */
uchar kr[16];
}
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 (!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);
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(SAM_ACCOUNT *sampass,
+static NTSTATUS sam_password_ok(const struct auth_context *auth_context,
+ TALLOC_CTX *mem_ctx,
+ SAM_ACCOUNT *sampass,
const auth_usersupplied_info *user_info,
- const auth_authsupplied_info *auth_info,
uint8 user_sess_key[16])
{
uint16 acct_ctrl;
const uint8 *nt_pw, *lm_pw;
- uint32 ntlmssp_flags;
+ uint32 auth_flags;
acct_ctrl = pdb_get_acct_ctrl(sampass);
if (acct_ctrl & ACB_PWNOTREQ)
}
}
- nt_pw = pdb_get_nt_passwd(sampass);
- lm_pw = pdb_get_lanman_passwd(sampass);
-
- ntlmssp_flags = user_info->ntlmssp_flags;
+ auth_flags = user_info->auth_flags;
- if (nt_pw == NULL) {
- DEBUG(3,("smb_password_ok: NO NT password stored for user %s.\n",
+ 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 */
- ntlmssp_flags &= (~(NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_NTLM2));
+ auth_flags &= (~(AUTH_FLAG_NTLMv2_RESP | AUTH_FLAG_NTLM_RESP));
}
- if (ntlmssp_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ 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,("smb_password_ok: Checking NTLMv2 password\n"));
+ 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_info->challange,
+ 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 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,("smb_password_ok: NTLMv2 password check failed\n"));
+ DEBUG(3,("sam_password_ok: NTLMv2 password check failed\n"));
return NT_STATUS_WRONG_PASSWORD;
}
- } else if (ntlmssp_flags & NTLMSSP_NEGOTIATE_NTLM) {
- if (lp_ntlm_auth()) {
+ } else if (auth_flags & AUTH_FLAG_NTLM_RESP) {
+ 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,("smb_password_ok: Checking NT MD4 password\n"));
+ DEBUG(4,("sam_password_ok: Checking NT MD4 password\n"));
if (smb_pwd_check_ntlmv1(user_info->nt_resp,
- nt_pw, auth_info->challange,
+ nt_pw, auth_context->challenge,
user_sess_key))
{
return NT_STATUS_OK;
} else {
- DEBUG(3,("smb_password_ok: NT MD4 password check failed for user %s\n",pdb_get_username(sampass)));
+ DEBUG(3,("sam_password_ok: NT MD4 password check failed for user %s\n",pdb_get_username(sampass)));
return NT_STATUS_WRONG_PASSWORD;
}
} else {
- DEBUG(2,("smb_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 */
+ DEBUG(2,("sam_password_ok: NTLMv1 passwords NOT PERMITTED for user %s\n",pdb_get_username(sampass)));
+ /* no return, becouse we might pick up LMv2 in the LM feild */
}
}
- if (lm_pw == NULL) {
- DEBUG(3,("smb_password_ok: NO LanMan password set for user %s (and no NT password supplied)\n",pdb_get_username(sampass)));
- ntlmssp_flags &= (~NTLMSSP_NEGOTIATE_OEM);
- }
-
- if (ntlmssp_flags & NTLMSSP_NEGOTIATE_OEM) {
-
+ if (auth_flags & AUTH_FLAG_LM_RESP) {
if (user_info->lm_resp.length != 24) {
- DEBUG(2,("smb_password_ok: invalid LanMan password length (%d) for user %s\n",
+ DEBUG(2,("sam_password_ok: invalid LanMan password length (%d) for user %s\n",
user_info->nt_resp.length, pdb_get_username(sampass)));
}
if (!lp_lanman_auth()) {
- DEBUG(3,("smb_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,("smb_password_ok: Checking LM password\n"));
- if (smb_pwd_check_ntlmv1(user_info->lm_resp,
- lm_pw, auth_info->challange,
- 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,("smb_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,("smb_password_ok: NEITHER LanMan nor NT password supplied for user %s\n",pdb_get_username(sampass)));
+ 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(SAM_ACCOUNT *sampass, const auth_usersupplied_info *user_info)
+static NTSTATUS sam_account_ok(TALLOC_CTX *mem_ctx,
+ SAM_ACCOUNT *sampass,
+ const auth_usersupplied_info *user_info)
{
uint16 acct_ctrl = pdb_get_acct_ctrl(sampass);
char *workstation_list;
time_t kickoff_time;
- DEBUG(4,("smb_password_ok: Checking SMB password for user %s\n",pdb_get_username(sampass)));
+ DEBUG(4,("sam_account_ok: Checking SMB password for user %s\n",pdb_get_username(sampass)));
/* Quit if the account was disabled. */
if (acct_ctrl & ACB_DISABLED) {
/* Test workstation. Workstation list is comma separated. */
- workstation_list = strdup(pdb_get_workstations(sampass));
+ workstation_list = talloc_strdup(mem_ctx, pdb_get_workstations(sampass));
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;
}
}
- SAFE_FREE(workstation_list);
if (invalid_ws)
return NT_STATUS_INVALID_WORKSTATION;
- } else {
- SAFE_FREE(workstation_list);
}
if (acct_ctrl & ACB_DOMTRUST) {
- DEBUG(2,("session_trust_account: Domain trust account %s denied by server\n", pdb_get_username(sampass)));
+ DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", pdb_get_username(sampass)));
return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
}
if (acct_ctrl & ACB_SVRTRUST) {
- DEBUG(2,("session_trust_account: Server trust account %s denied by server\n", pdb_get_username(sampass)));
+ DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", pdb_get_username(sampass)));
return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
}
if (acct_ctrl & ACB_WSTRUST) {
- DEBUG(4,("session_trust_account: Wksta trust account %s denied by server\n", pdb_get_username(sampass)));
+ DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", pdb_get_username(sampass)));
return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
}
return an NT_STATUS constant.
****************************************************************************/
-NTSTATUS check_sam_security(void *my_private_dat,
- const auth_usersupplied_info *user_info,
- const auth_authsupplied_info *auth_info,
- auth_serversupplied_info **server_info)
+static NTSTATUS check_sam_security(const struct auth_context *auth_context,
+ void *my_private_data,
+ TALLOC_CTX *mem_ctx,
+ const auth_usersupplied_info *user_info,
+ auth_serversupplied_info **server_info)
{
SAM_ACCOUNT *sampass=NULL;
BOOL ret;
uint8 user_sess_key[16];
const uint8* lm_hash;
- if (!user_info || !auth_info) {
- return NT_STATUS_LOGON_FAILURE;
+ if (!user_info || !auth_context) {
+ return NT_STATUS_UNSUCCESSFUL;
}
- if (!pdb_init_sam(&sampass)) {
- return NT_STATUS_NO_MEMORY;
+ /* Can't use the talloc version here, becouse the returned struct gets
+ kept on the server_info */
+ if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(&sampass))) {
+ return nt_status;
}
/* get the account information */
if (ret == False)
{
- DEBUG(1,("Couldn't find user '%s' in passdb file.\n", user_info->internal_username.str));
+ DEBUG(3,("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(sampass, user_info, auth_info, user_sess_key);
-
+ nt_status = sam_account_ok(mem_ctx, sampass, user_info);
+
if (!NT_STATUS_IS_OK(nt_status)) {
pdb_free_sam(&sampass);
return nt_status;
}
- nt_status = sam_account_ok(sampass, user_info);
-
+ 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;
}
- 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);
return nt_status;
}
-BOOL auth_init_sam(auth_methods **auth_method)
+/* module initialisation */
+NTSTATUS auth_init_sam(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
{
- if (!make_auth_methods(auth_method)) {
- return False;
+ if (!make_auth_methods(auth_context, auth_method)) {
+ return NT_STATUS_NO_MEMORY;
}
- (*auth_method)->auth = check_sam_security;
- return True;
+ (*auth_method)->auth = check_sam_security;
+ (*auth_method)->name = "sam";
+ return NT_STATUS_OK;
}
+/****************************************************************************
+Check SAM security (above) but with a few extra checks.
+****************************************************************************/
+
+static NTSTATUS check_samstrict_security(const struct auth_context *auth_context,
+ void *my_private_data,
+ TALLOC_CTX *mem_ctx,
+ const auth_usersupplied_info *user_info,
+ auth_serversupplied_info **server_info)
+{
+
+ 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. */
+
+ if (!is_myname(user_info->domain.str)) {
+ return NT_STATUS_NO_SUCH_USER;
+ }
+
+ return check_sam_security(auth_context, my_private_data, mem_ctx, user_info, server_info);
+}
+
+/* module initialisation */
+NTSTATUS auth_init_samstrict(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
+{
+ if (!make_auth_methods(auth_context, auth_method)) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ (*auth_method)->auth = check_samstrict_security;
+ (*auth_method)->name = "samstrict";
+ return NT_STATUS_OK;
+}
+
+int auth_sam_init(void)
+{
+ smb_register_auth("samstrict", auth_init_samstrict, AUTH_INTERFACE_VERSION);
+ smb_register_auth("sam", auth_init_sam, AUTH_INTERFACE_VERSION);
+ return True;
+}
git.samba.org / jra / samba / .git / blobdiff