Copyright (C) Luke Kenneth Casson Leighton 1996-2000
Copyright (C) Andrew Bartlett 2001-2003
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
- the Free Software Foundation; either version 2 of the License, or
+ 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "../libcli/auth/libcli_auth.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
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 char *username,
+ uint32_t acct_ctrl,
+ const uint8_t *lm_pw,
+ const uint8_t *nt_pw,
+ const struct auth_usersupplied_info *user_info,
DATA_BLOB *user_sess_key,
DATA_BLOB *lm_sess_key)
{
- uint16 acct_ctrl;
- const uint8 *lm_pw, *nt_pw;
- const char *username = pdb_get_username(sampass);
+ struct samr_Password _lm_hash, _nt_hash, _client_lm_hash, _client_nt_hash;
+ struct samr_Password *lm_hash = NULL;
+ struct samr_Password *nt_hash = NULL;
+ struct samr_Password *client_lm_hash = NULL;
+ struct samr_Password *client_nt_hash = NULL;
+
+ *user_sess_key = data_blob_null;
+ *lm_sess_key = data_blob_null;
- acct_ctrl = pdb_get_acct_ctrl(sampass);
if (acct_ctrl & ACB_PWNOTREQ) {
if (lp_null_passwords()) {
DEBUG(3,("Account for user '%s' has no password and null passwords are allowed.\n", username));
}
}
- lm_pw = pdb_get_lanman_passwd(sampass);
- nt_pw = pdb_get_nt_passwd(sampass);
+ if (lm_pw) {
+ memcpy(_lm_hash.hash, lm_pw, sizeof(_lm_hash.hash));
+ lm_hash = &_lm_hash;
+ }
+ if (nt_pw) {
+ memcpy(_nt_hash.hash, nt_pw, sizeof(_nt_hash.hash));
+ nt_hash = &_nt_hash;
+ }
+ if (user_info->lm_interactive_pwd.data && sizeof(_client_lm_hash.hash) == user_info->lm_interactive_pwd.length) {
+ memcpy(_client_lm_hash.hash, user_info->lm_interactive_pwd.data, sizeof(_lm_hash.hash));
+ client_lm_hash = &_client_lm_hash;
+ }
+ if (user_info->nt_interactive_pwd.data && sizeof(_client_nt_hash.hash) == user_info->nt_interactive_pwd.length) {
+ memcpy(_client_nt_hash.hash, user_info->nt_interactive_pwd.data, sizeof(_nt_hash.hash));
+ client_nt_hash = &_client_nt_hash;
+ }
- return ntlm_password_check(mem_ctx, &auth_context->challenge,
- &user_info->lm_resp, &user_info->nt_resp,
- &user_info->lm_interactive_pwd, &user_info->nt_interactive_pwd,
- username,
- user_info->smb_name.str,
- user_info->client_domain.str,
- lm_pw, nt_pw, user_sess_key, lm_sess_key);
+ if (client_lm_hash || client_nt_hash) {
+ *user_sess_key = data_blob_talloc(mem_ctx, NULL, 16);
+ if (!user_sess_key->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ SMBsesskeygen_ntv1(nt_pw, user_sess_key->data);
+ return hash_password_check(mem_ctx, lp_lanman_auth(),
+ client_lm_hash,
+ client_nt_hash,
+ username,
+ lm_hash,
+ nt_hash);
+ } else {
+ return ntlm_password_check(mem_ctx, lp_lanman_auth(),
+ lp_ntlm_auth(),
+ user_info->logon_parameters,
+ &auth_context->challenge,
+ &user_info->lm_resp, &user_info->nt_resp,
+ username,
+ user_info->smb_name,
+ user_info->client_domain,
+ lm_hash,
+ nt_hash,
+ user_sess_key, lm_sess_key);
+ }
}
/****************************************************************************
servers local time, as logon hours are just specified as a weekly
bitmask.
****************************************************************************/
-
-static BOOL logon_hours_ok(SAM_ACCOUNT *sampass)
+
+static bool logon_hours_ok(struct samu *sampass)
{
/* In logon hours first bit is Sunday from 12AM to 1AM */
- extern struct timeval smb_last_time;
const uint8 *hours;
struct tm *utctime;
+ time_t lasttime;
+ const char *asct;
uint8 bitmask, bitpos;
hours = pdb_get_hours(sampass);
return True;
}
- utctime = localtime(&smb_last_time.tv_sec);
+ lasttime = time(NULL);
+ utctime = gmtime(&lasttime);
+ if (!utctime) {
+ DEBUG(1, ("logon_hours_ok: failed to get gmtime. Failing logon for user %s\n",
+ pdb_get_username(sampass) ));
+ return False;
+ }
/* find the corresponding byte and bit */
bitpos = (utctime->tm_wday * 24 + utctime->tm_hour) % 168;
bitmask = 1 << (bitpos % 8);
if (! (hours[bitpos/8] & bitmask)) {
- DEBUG(1,("logon_hours_ok: Account for user %s not allowed to logon at this time (UTC %s).\n",
- pdb_get_username(sampass), asctime(utctime) ));
+ struct tm *t = localtime(&lasttime);
+ if (!t) {
+ asct = "INVALID TIME";
+ } else {
+ asct = asctime(t);
+ if (!asct) {
+ asct = "INVALID TIME";
+ }
+ }
+
+ DEBUG(1, ("logon_hours_ok: Account for user %s not allowed to "
+ "logon at this time (%s).\n",
+ pdb_get_username(sampass), asct ));
return False;
}
- DEBUG(5,("logon_hours_ok: user %s allowed to logon at this time (UTC %s)\n",
- pdb_get_username(sampass), asctime(utctime) ));
+ asct = asctime(utctime);
+ DEBUG(5,("logon_hours_ok: user %s allowed to logon at this time (%s)\n",
+ pdb_get_username(sampass), asct ? asct : "UNKNOWN TIME" ));
return True;
}
/****************************************************************************
- Do a specific test for a SAM_ACCOUNT being vaild for this connection
+ Do a specific test for a struct samu being valid 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)
+ struct samu *sampass,
+ const struct auth_usersupplied_info *user_info)
{
- uint16 acct_ctrl = pdb_get_acct_ctrl(sampass);
+ uint32 acct_ctrl = pdb_get_acct_ctrl(sampass);
char *workstation_list;
time_t kickoff_time;
-
+
DEBUG(4,("sam_account_ok: Checking SMB password for user %s\n",pdb_get_username(sampass)));
/* Quit if the account was disabled. */
}
/* Test account expire time */
-
+
kickoff_time = pdb_get_kickoff_time(sampass);
if (kickoff_time != 0 && time(NULL) > kickoff_time) {
DEBUG(1,("sam_account_ok: Account for user '%s' has expired.\n", pdb_get_username(sampass)));
return NT_STATUS_ACCOUNT_EXPIRED;
}
- if (!(pdb_get_acct_ctrl(sampass) & ACB_PWNOEXP)) {
+ if (!(pdb_get_acct_ctrl(sampass) & ACB_PWNOEXP) && !(pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ)) {
time_t must_change_time = pdb_get_pass_must_change_time(sampass);
time_t last_set_time = pdb_get_pass_last_set_time(sampass);
- /* check for immediate expiry "must change at next logon" */
- if (must_change_time == 0 && last_set_time != 0) {
- DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n", pdb_get_username(sampass)));
+ /* check for immediate expiry "must change at next logon"
+ * for a user account. */
+ if (((acct_ctrl & (ACB_WSTRUST|ACB_SVRTRUST)) == 0) && (last_set_time == 0)) {
+ 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,("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));
+ 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(talloc_tos(), must_change_time), (long)must_change_time));
return NT_STATUS_PASSWORD_EXPIRED;
}
}
return NT_STATUS_NO_MEMORY;
if (*workstation_list) {
- BOOL invalid_ws = True;
+ bool invalid_ws = True;
+ char *tok = NULL;
const char *s = workstation_list;
-
- fstring tok;
-
- while (next_token(&s, tok, ",", sizeof(tok))) {
- 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)) {
+ char *machine_name = talloc_asprintf(mem_ctx, "%s$", user_info->wksta_name);
+
+ if (machine_name == NULL)
+ return NT_STATUS_NO_MEMORY;
+
+ while (next_token_talloc(mem_ctx, &s, &tok, ",")) {
+ DEBUG(10,("sam_account_ok: checking for workstation match %s and %s\n",
+ tok, user_info->wksta_name));
+ if(strequal(tok, user_info->wksta_name)) {
invalid_ws = False;
break;
}
+ if (tok[0] == '+') {
+ DEBUG(10,("sam_account_ok: checking for workstation %s in group: %s\n",
+ machine_name, tok + 1));
+ if (user_in_group(machine_name, tok + 1)) {
+ invalid_ws = False;
+ break;
+ }
+ }
+ TALLOC_FREE(tok);
}
-
- if (invalid_ws)
+ TALLOC_FREE(tok);
+ TALLOC_FREE(machine_name);
+
+ if (invalid_ws)
return NT_STATUS_INVALID_WORKSTATION;
}
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,("sam_account_ok: Server trust account %s denied by server\n", pdb_get_username(sampass)));
- return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
+ if (!(user_info->logon_parameters & MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT)) {
+ 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,("sam_account_ok: Wksta trust account %s denied by server\n", pdb_get_username(sampass)));
- return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
+ if (!(user_info->logon_parameters & MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT)) {
+ DEBUG(2,("sam_account_ok: Wksta trust account %s denied by server\n", pdb_get_username(sampass)));
+ return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
+ }
}
-
return NT_STATUS_OK;
}
+/**
+ * Check whether the given password is one of the last two
+ * password history entries. If so, the bad pwcount should
+ * not be incremented even thought the actual password check
+ * failed.
+ */
+static bool need_to_increment_bad_pw_count(
+ const struct auth_context *auth_context,
+ struct samu* sampass,
+ const struct auth_usersupplied_info *user_info)
+{
+ uint8_t i;
+ const uint8_t *pwhistory;
+ uint32_t pwhistory_len;
+ uint32_t policy_pwhistory_len;
+ uint32_t acct_ctrl;
+ const char *username;
+ TALLOC_CTX *mem_ctx = talloc_stackframe();
+ bool result = true;
+
+ pdb_get_account_policy(PDB_POLICY_PASSWORD_HISTORY,
+ &policy_pwhistory_len);
+ if (policy_pwhistory_len == 0) {
+ goto done;
+ }
+
+ pwhistory = pdb_get_pw_history(sampass, &pwhistory_len);
+ if (!pwhistory || pwhistory_len == 0) {
+ goto done;
+ }
+
+ acct_ctrl = pdb_get_acct_ctrl(sampass);
+ username = pdb_get_username(sampass);
+
+ for (i=1; i < MIN(MIN(3, policy_pwhistory_len), pwhistory_len); i++) {
+ static const uint8_t zero16[SALTED_MD5_HASH_LEN];
+ const uint8_t *salt;
+ const uint8_t *nt_pw;
+ NTSTATUS status;
+ DATA_BLOB user_sess_key = data_blob_null;
+ DATA_BLOB lm_sess_key = data_blob_null;
+
+ salt = &pwhistory[i*PW_HISTORY_ENTRY_LEN];
+ nt_pw = salt + PW_HISTORY_SALT_LEN;
+
+ if (memcmp(zero16, nt_pw, NT_HASH_LEN) == 0) {
+ /* skip zero password hash */
+ continue;
+ }
+
+ if (memcmp(zero16, salt, PW_HISTORY_SALT_LEN) != 0) {
+ /* skip nonzero salt (old format entry) */
+ continue;
+ }
+
+ status = sam_password_ok(auth_context, mem_ctx,
+ username, acct_ctrl, NULL, nt_pw,
+ user_info, &user_sess_key, &lm_sess_key);
+ if (NT_STATUS_IS_OK(status)) {
+ result = false;
+ break;
+ }
+ }
+
+done:
+ TALLOC_FREE(mem_ctx);
+ return result;
+}
+
/****************************************************************************
check if a username/password is OK assuming the password is a 24 byte
SMB hash supplied in the user_info structure
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)
+ const struct auth_usersupplied_info *user_info,
+ struct auth_serversupplied_info **server_info)
{
- SAM_ACCOUNT *sampass=NULL;
- BOOL ret;
+ struct samu *sampass=NULL;
+ bool ret;
NTSTATUS nt_status;
- DATA_BLOB user_sess_key = data_blob(NULL, 0);
- DATA_BLOB lm_sess_key = data_blob(NULL, 0);
- BOOL updated_autolock = False, updated_badpw = False;
+ NTSTATUS update_login_attempts_status;
+ DATA_BLOB user_sess_key = data_blob_null;
+ DATA_BLOB lm_sess_key = data_blob_null;
+ bool updated_autolock = False, updated_badpw = False;
+ uint32_t acct_ctrl;
+ const char *username;
+ const uint8_t *nt_pw;
+ const uint8_t *lm_pw;
if (!user_info || !auth_context) {
return NT_STATUS_UNSUCCESSFUL;
}
- /* 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;
+ /* the returned struct gets kept on the server_info, by means
+ of a steal further down */
+
+ sampass = samu_new(mem_ctx);
+ if (sampass == NULL) {
+ return NT_STATUS_NO_MEMORY;
}
/* get the account information */
become_root();
- ret = pdb_getsampwnam(sampass, user_info->internal_username.str);
+ ret = pdb_getsampwnam(sampass, user_info->internal_username);
unbecome_root();
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);
+ DEBUG(3,("check_sam_security: Couldn't find user '%s' in "
+ "passdb.\n", user_info->internal_username));
+ TALLOC_FREE(sampass);
return NT_STATUS_NO_SUCH_USER;
}
+ acct_ctrl = pdb_get_acct_ctrl(sampass);
+ username = pdb_get_username(sampass);
+ nt_pw = pdb_get_nt_passwd(sampass);
+ lm_pw = pdb_get_lanman_passwd(sampass);
+
/* see if autolock flag needs to be updated */
- if (pdb_get_acct_ctrl(sampass) & ACB_NORMAL)
+ if (acct_ctrl & ACB_NORMAL)
pdb_update_autolock_flag(sampass, &updated_autolock);
/* Quit if the account was locked out. */
- if (pdb_get_acct_ctrl(sampass) & ACB_AUTOLOCK) {
- DEBUG(3,("check_sam_security: Account for user %s was locked out.\n", pdb_get_username(sampass)));
+ if (acct_ctrl & ACB_AUTOLOCK) {
+ DEBUG(3,("check_sam_security: Account for user %s was locked out.\n", username));
return NT_STATUS_ACCOUNT_LOCKED_OUT;
}
- nt_status = sam_password_ok(auth_context, mem_ctx, sampass,
+ nt_status = sam_password_ok(auth_context, mem_ctx,
+ username, acct_ctrl, lm_pw, nt_pw,
user_info, &user_sess_key, &lm_sess_key);
-
+
+ /* Notify passdb backend of login success/failure. If not
+ NT_STATUS_OK the backend doesn't like the login */
+
+ update_login_attempts_status = pdb_update_login_attempts(sampass, NT_STATUS_IS_OK(nt_status));
+
if (!NT_STATUS_IS_OK(nt_status)) {
+ bool increment_bad_pw_count = false;
+
if (NT_STATUS_EQUAL(nt_status,NT_STATUS_WRONG_PASSWORD) &&
- pdb_get_acct_ctrl(sampass) &ACB_NORMAL) {
+ acct_ctrl & ACB_NORMAL &&
+ NT_STATUS_IS_OK(update_login_attempts_status))
+ {
+ increment_bad_pw_count =
+ need_to_increment_bad_pw_count(auth_context,
+ sampass,
+ user_info);
+ }
+
+ if (increment_bad_pw_count) {
pdb_increment_bad_password_count(sampass);
updated_badpw = True;
} else {
&updated_badpw);
}
if (updated_autolock || updated_badpw){
+ NTSTATUS status;
+
become_root();
- if(!pdb_update_sam_account(sampass))
- DEBUG(1, ("Failed to modify entry.\n"));
+ status = pdb_update_sam_account(sampass);
unbecome_root();
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Failed to modify entry: %s\n",
+ nt_errstr(status)));
+ }
}
- data_blob_free(&user_sess_key);
- data_blob_free(&lm_sess_key);
- pdb_free_sam(&sampass);
- return nt_status;
+ goto done;
}
- if ((pdb_get_acct_ctrl(sampass) & ACB_NORMAL) &&
+ if ((acct_ctrl & ACB_NORMAL) &&
(pdb_get_bad_password_count(sampass) > 0)){
pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
}
if (updated_autolock || updated_badpw){
+ NTSTATUS status;
+
become_root();
- if(!pdb_update_sam_account(sampass))
- DEBUG(1, ("Failed to modify entry.\n"));
+ status = pdb_update_sam_account(sampass);
unbecome_root();
- }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Failed to modify entry: %s\n",
+ nt_errstr(status)));
+ }
+ }
nt_status = sam_account_ok(mem_ctx, sampass, user_info);
if (!NT_STATUS_IS_OK(nt_status)) {
- pdb_free_sam(&sampass);
- data_blob_free(&user_sess_key);
- data_blob_free(&lm_sess_key);
- return nt_status;
+ goto done;
}
- if (!NT_STATUS_IS_OK(nt_status = make_server_info_sam(server_info, sampass))) {
+ become_root();
+ nt_status = make_server_info_sam(server_info, sampass);
+ unbecome_root();
+ /*
+ * sampass has been stolen to server_info.
+ * So NULL it out to prevent segfaults.
+ */
+ sampass = NULL;
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0,("check_sam_security: make_server_info_sam() failed with '%s'\n", nt_errstr(nt_status)));
- data_blob_free(&user_sess_key);
- data_blob_free(&lm_sess_key);
- return nt_status;
+ goto done;
}
- (*server_info)->user_session_key = user_sess_key;
- (*server_info)->lm_session_key = lm_sess_key;
+ (*server_info)->user_session_key =
+ data_blob_talloc(*server_info, user_sess_key.data,
+ user_sess_key.length);
+ data_blob_free(&user_sess_key);
+ (*server_info)->lm_session_key =
+ data_blob_talloc(*server_info, lm_sess_key.data,
+ lm_sess_key.length);
+ data_blob_free(&lm_sess_key);
+
+ (*server_info)->nss_token |= user_info->was_mapped;
+
+done:
+ TALLOC_FREE(sampass);
+ data_blob_free(&user_sess_key);
+ data_blob_free(&lm_sess_key);
return nt_status;
}
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)
+ const struct auth_usersupplied_info *user_info,
+ struct auth_serversupplied_info **server_info)
{
- BOOL is_local_name, is_my_domain;
+ bool is_local_name, is_my_domain;
if (!user_info || !auth_context) {
return NT_STATUS_LOGON_FAILURE;
}
- is_local_name = is_myname(user_info->domain.str);
- is_my_domain = strequal(user_info->domain.str, lp_workgroup());
+ is_local_name = is_myname(user_info->domain);
+ is_my_domain = strequal(user_info->domain, lp_workgroup());
/* check whether or not we service this domain/workgroup name */
-
+
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
+ user_info->domain, (lp_server_role() == ROLE_DOMAIN_MEMBER
? "ROLE_DOMAIN_MEMBER" : "ROLE_STANDALONE") ));
return NT_STATUS_NOT_IMPLEMENTED;
}
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));
+ user_info->domain));
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);
}
git.samba.org / amitay / samba.git / blobdiff