#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
-/****************************************************************************
- 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(TALLOC_CTX *mem_ctx,
- const char *username,
- uint32_t acct_ctrl,
- const DATA_BLOB *challenge,
- 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)
-{
- 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;
-
- 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));
- return NT_STATUS_OK;
- } else {
- DEBUG(3,("Account for user '%s' has no password and null passwords are NOT allowed.\n", username));
- return NT_STATUS_LOGON_FAILURE;
- }
- }
-
- 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;
- }
-
- 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,
- 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);
- }
-}
-
-/****************************************************************************
- Check if a user is allowed to logon at this time. Note this is the
- servers local time, as logon hours are just specified as a weekly
- bitmask.
-****************************************************************************/
-
-static bool logon_hours_ok(struct samu *sampass)
-{
- /* In logon hours first bit is Sunday from 12AM to 1AM */
- const uint8 *hours;
- struct tm *utctime;
- time_t lasttime;
- const char *asct;
- uint8 bitmask, bitpos;
-
- hours = pdb_get_hours(sampass);
- if (!hours) {
- DEBUG(5,("logon_hours_ok: No hours restrictions for user %s\n",pdb_get_username(sampass)));
- return True;
- }
-
- 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)) {
- 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;
- }
-
- 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 struct samu being valid for this connection
- (ie not disabled, expired and the like).
-****************************************************************************/
-
-static NTSTATUS sam_account_ok(TALLOC_CTX *mem_ctx,
- struct samu *sampass,
- const struct auth_usersupplied_info *user_info)
-{
- 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. */
- if (acct_ctrl & ACB_DISABLED) {
- 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;
- }
-
- /* Quit if the account is not allowed to logon at this time. */
- if (! logon_hours_ok(sampass)) {
- return NT_STATUS_INVALID_LOGON_HOURS;
- }
-
- /* 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)));
- DEBUG(3,("sam_account_ok: Account expired at '%ld' unix time.\n", (long)kickoff_time));
- return NT_STATUS_ACCOUNT_EXPIRED;
- }
-
- 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"
- * 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(talloc_tos(), 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) {
- bool invalid_ws = True;
- char *tok = NULL;
- const char *s = workstation_list;
- 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);
- }
- TALLOC_FREE(tok);
- TALLOC_FREE(machine_name);
-
- if (invalid_ws)
- return NT_STATUS_INVALID_WORKSTATION;
- }
-
- if (acct_ctrl & ACB_DOMTRUST) {
- 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) {
- 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) {
- 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 DATA_BLOB *challenge,
- 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(mem_ctx,
- username, acct_ctrl,
- challenge,
- 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
-return an NT_STATUS constant.
-****************************************************************************/
-
-NTSTATUS check_sam_security(const DATA_BLOB *challenge,
- TALLOC_CTX *mem_ctx,
- const struct auth_usersupplied_info *user_info,
- struct auth_serversupplied_info **server_info)
-{
- struct samu *sampass=NULL;
- bool ret;
- NTSTATUS nt_status;
- 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;
- const char *username;
- const uint8_t *nt_pw;
- const uint8_t *lm_pw;
-
- /* 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);
- unbecome_root();
-
- if (ret == False) {
- 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;
- }
-
- 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)
- 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", username));
- return NT_STATUS_ACCOUNT_LOCKED_OUT;
- }
-
- nt_status = sam_password_ok(mem_ctx,
- username, pdb_get_acct_ctrl(sampass),
- challenge, 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 &&
- NT_STATUS_IS_OK(update_login_attempts_status))
- {
- increment_bad_pw_count =
- need_to_increment_bad_pw_count(
- challenge, sampass, user_info);
- }
-
- if (increment_bad_pw_count) {
- pdb_increment_bad_password_count(sampass);
- updated_badpw = True;
- } else {
- pdb_update_bad_password_count(sampass,
- &updated_badpw);
- }
- if (updated_autolock || updated_badpw){
- NTSTATUS status;
-
- become_root();
- 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)));
- }
- }
- goto done;
- }
-
- if ((pdb_get_acct_ctrl(sampass) & 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);
- updated_badpw = True;
- }
-
- if (updated_autolock || updated_badpw){
- NTSTATUS status;
-
- become_root();
- 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)) {
- goto done;
- }
-
- 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)));
- goto done;
- }
-
- (*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 auth_sam_ignoredomain_auth(const struct auth_context *auth_context,
void *my_private_data,
TALLOC_CTX *mem_ctx,
--- /dev/null
+/*
+ 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 2001-2003
+ 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 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"
+#include "../libcli/auth/libcli_auth.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+/****************************************************************************
+ 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(TALLOC_CTX *mem_ctx,
+ const char *username,
+ uint32_t acct_ctrl,
+ const DATA_BLOB *challenge,
+ 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)
+{
+ 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;
+
+ 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));
+ return NT_STATUS_OK;
+ } else {
+ DEBUG(3,("Account for user '%s' has no password and null passwords are NOT allowed.\n", username));
+ return NT_STATUS_LOGON_FAILURE;
+ }
+ }
+
+ 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;
+ }
+
+ 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,
+ 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);
+ }
+}
+
+/****************************************************************************
+ Check if a user is allowed to logon at this time. Note this is the
+ servers local time, as logon hours are just specified as a weekly
+ bitmask.
+****************************************************************************/
+
+static bool logon_hours_ok(struct samu *sampass)
+{
+ /* In logon hours first bit is Sunday from 12AM to 1AM */
+ const uint8 *hours;
+ struct tm *utctime;
+ time_t lasttime;
+ const char *asct;
+ uint8 bitmask, bitpos;
+
+ hours = pdb_get_hours(sampass);
+ if (!hours) {
+ DEBUG(5,("logon_hours_ok: No hours restrictions for user %s\n",pdb_get_username(sampass)));
+ return True;
+ }
+
+ 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)) {
+ 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;
+ }
+
+ 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 struct samu being valid for this connection
+ (ie not disabled, expired and the like).
+****************************************************************************/
+
+static NTSTATUS sam_account_ok(TALLOC_CTX *mem_ctx,
+ struct samu *sampass,
+ const struct auth_usersupplied_info *user_info)
+{
+ 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. */
+ if (acct_ctrl & ACB_DISABLED) {
+ 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;
+ }
+
+ /* Quit if the account is not allowed to logon at this time. */
+ if (! logon_hours_ok(sampass)) {
+ return NT_STATUS_INVALID_LOGON_HOURS;
+ }
+
+ /* 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)));
+ DEBUG(3,("sam_account_ok: Account expired at '%ld' unix time.\n", (long)kickoff_time));
+ return NT_STATUS_ACCOUNT_EXPIRED;
+ }
+
+ 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"
+ * 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(talloc_tos(), 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) {
+ bool invalid_ws = True;
+ char *tok = NULL;
+ const char *s = workstation_list;
+ 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);
+ }
+ TALLOC_FREE(tok);
+ TALLOC_FREE(machine_name);
+
+ if (invalid_ws)
+ return NT_STATUS_INVALID_WORKSTATION;
+ }
+
+ if (acct_ctrl & ACB_DOMTRUST) {
+ 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) {
+ 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) {
+ 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 DATA_BLOB *challenge,
+ 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(mem_ctx,
+ username, acct_ctrl,
+ challenge,
+ 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
+return an NT_STATUS constant.
+****************************************************************************/
+
+NTSTATUS check_sam_security(const DATA_BLOB *challenge,
+ TALLOC_CTX *mem_ctx,
+ const struct auth_usersupplied_info *user_info,
+ struct auth_serversupplied_info **server_info)
+{
+ struct samu *sampass=NULL;
+ bool ret;
+ NTSTATUS nt_status;
+ 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;
+ const char *username;
+ const uint8_t *nt_pw;
+ const uint8_t *lm_pw;
+
+ /* 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);
+ unbecome_root();
+
+ if (ret == False) {
+ 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;
+ }
+
+ 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)
+ 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", username));
+ return NT_STATUS_ACCOUNT_LOCKED_OUT;
+ }
+
+ nt_status = sam_password_ok(mem_ctx,
+ username, pdb_get_acct_ctrl(sampass),
+ challenge, 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 &&
+ NT_STATUS_IS_OK(update_login_attempts_status))
+ {
+ increment_bad_pw_count =
+ need_to_increment_bad_pw_count(
+ challenge, sampass, user_info);
+ }
+
+ if (increment_bad_pw_count) {
+ pdb_increment_bad_password_count(sampass);
+ updated_badpw = True;
+ } else {
+ pdb_update_bad_password_count(sampass,
+ &updated_badpw);
+ }
+ if (updated_autolock || updated_badpw){
+ NTSTATUS status;
+
+ become_root();
+ 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)));
+ }
+ }
+ goto done;
+ }
+
+ if ((pdb_get_acct_ctrl(sampass) & 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);
+ updated_badpw = True;
+ }
+
+ if (updated_autolock || updated_badpw){
+ NTSTATUS status;
+
+ become_root();
+ 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)) {
+ goto done;
+ }
+
+ 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)));
+ goto done;
+ }
+
+ (*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;
+}
git.samba.org / garming / samba-autobuild / .git / commitdiff