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_badpw = False;
const char *username;
const uint8_t *nt_pw;
const uint8_t *lm_pw;
uint32_t acct_ctrl;
/* 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->mapped.account_name);
unbecome_root();
if (ret == False) {
DEBUG(3,("check_sam_security: Couldn't find user '%s' in "
"passdb.\n", user_info->mapped.account_name));
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);
/* Quit if the account was locked out. */
if (acct_ctrl & ACB_AUTOLOCK) {
DEBUG(3,("check_sam_security: Account for user %s was locked out.\n", username));
TALLOC_FREE(sampass);
return NT_STATUS_ACCOUNT_LOCKED_OUT;
}
nt_status = sam_password_ok(mem_ctx,
username, acct_ctrl,
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) &&
(acct_ctrl & 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_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;
}
/*
* We must only reset the bad password count if the login was
* successful, including checking account policies
*/
nt_status = sam_account_ok(mem_ctx, sampass, user_info);
if (!NT_STATUS_IS_OK(nt_status)) {
goto done;
}
if ((acct_ctrl & ACB_NORMAL) &&
(pdb_get_bad_password_count(sampass) > 0)){
NTSTATUS status;
pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
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)));
}
}
become_root();
nt_status = make_server_info_sam(mem_ctx, sampass, server_info);
unbecome_root();
TALLOC_FREE(sampass);
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)->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_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)
{
struct samu *sampass=NULL;
BOOL ret;
NTSTATUS nt_status;
NTSTATUS update_login_attempts_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;
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 ( !(sampass = samu_new( 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;
}
/* 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", pdb_get_username(sampass)));
return NT_STATUS_ACCOUNT_LOCKED_OUT;
}
nt_status = sam_password_ok(auth_context, mem_ctx, sampass,
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(update_login_attempts_status))
nt_status = update_login_attempts_status;
if (!NT_STATUS_IS_OK(nt_status)) {
if (NT_STATUS_EQUAL(nt_status,NT_STATUS_WRONG_PASSWORD) &&
pdb_get_acct_ctrl(sampass) &ACB_NORMAL) {
pdb_increment_bad_password_count(sampass);
updated_badpw = True;
} else {
pdb_update_bad_password_count(sampass,
&updated_badpw);
}
if (updated_autolock || updated_badpw){
become_root();
if(!NT_STATUS_IS_OK(pdb_update_sam_account(sampass)))
DEBUG(1, ("Failed to modify entry.\n"));
unbecome_root();
}
data_blob_free(&user_sess_key);
data_blob_free(&lm_sess_key);
TALLOC_FREE(sampass);
return nt_status;
}
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){
become_root();
if(!NT_STATUS_IS_OK(pdb_update_sam_account(sampass)))
DEBUG(1, ("Failed to modify entry.\n"));
unbecome_root();
}
nt_status = sam_account_ok(mem_ctx, sampass, user_info);
if (!NT_STATUS_IS_OK(nt_status)) {
TALLOC_FREE(sampass);
data_blob_free(&user_sess_key);
data_blob_free(&lm_sess_key);
return nt_status;
}
become_root();
nt_status = make_server_info_sam(server_info, sampass);
unbecome_root();
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0,("check_sam_security: make_server_info_sam() failed with '%s'\n", nt_errstr(nt_status)));
TALLOC_FREE(sampass);
data_blob_free(&user_sess_key);
data_blob_free(&lm_sess_key);
return nt_status;
}
(*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)->was_mapped |= user_info->was_mapped;
return nt_status;
}
NTSTATUS make_session_info_krb5(TALLOC_CTX *mem_ctx,
char *ntuser,
char *ntdomain,
char *username,
struct passwd *pw,
struct PAC_LOGON_INFO *logon_info,
bool mapped_to_guest, bool username_was_mapped,
DATA_BLOB *session_key,
struct auth_session_info **session_info)
{
NTSTATUS status;
struct auth_serversupplied_info *server_info;
if (mapped_to_guest) {
status = make_server_info_guest(mem_ctx, &server_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("make_server_info_guest failed: %s!\n",
nt_errstr(status)));
return status;
}
} else if (logon_info) {
/* pass the unmapped username here since map_username()
will be called again in make_server_info_info3() */
status = make_server_info_info3(mem_ctx,
ntuser, ntdomain,
&server_info,
&logon_info->info3);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("make_server_info_info3 failed: %s!\n",
nt_errstr(status)));
return status;
}
} else {
/*
* We didn't get a PAC, we have to make up the user
* ourselves. Try to ask the pdb backend to provide
* SID consistency with ntlmssp session setup
*/
struct samu *sampass;
/* The stupid make_server_info_XX functions here
don't take a talloc context. */
struct auth_serversupplied_info *tmp = NULL;
sampass = samu_new(talloc_tos());
if (sampass == NULL) {
return NT_STATUS_NO_MEMORY;
}
if (pdb_getsampwnam(sampass, username)) {
DEBUG(10, ("found user %s in passdb, calling "
"make_server_info_sam\n", username));
status = make_server_info_sam(&tmp, sampass);
} else {
/*
* User not in passdb, make it up artificially
*/
DEBUG(10, ("didn't find user %s in passdb, calling "
"make_server_info_pw\n", username));
status = make_server_info_pw(&tmp, username, pw);
}
TALLOC_FREE(sampass);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("make_server_info_[sam|pw] failed: %s!\n",
nt_errstr(status)));
return status;
}
/* make_server_info_pw does not set the domain. Without this
* we end up with the local netbios name in substitutions for
* %D. */
if (server_info->info3 != NULL) {
server_info->info3->base.domain.string =
talloc_strdup(server_info->info3, ntdomain);
}
}
server_info->nss_token |= username_was_mapped;
status = create_local_token(mem_ctx, server_info, session_key, ntuser, session_info);
talloc_free(server_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10,("failed to create local token: %s\n",
nt_errstr(status)));
return status;
}
return NT_STATUS_OK;
}
