_PUBLIC_ bool cli_credentials_is_anonymous(struct cli_credentials *cred)
{
const char *username;
/* if bind dn is set it's not anonymous */
if (cred->bind_dn) {
return false;
}
if (cred->machine_account_pending) {
cli_credentials_set_machine_account(cred,
cred->machine_account_pending_lp_ctx);
}
/* if principal is set, it's not anonymous */
if ((cred->principal != NULL) && cred->principal_obtained >= cred->username_obtained) {
return false;
}
username = cli_credentials_get_username(cred);
/* Yes, it is deliberate that we die if we have a NULL pointer
* here - anonymous is "", not NULL, which is 'never specified,
* never guessed', ie programmer bug */
if (!username[0]) {
return true;
}
return false;
}
static PyObject *py_creds_set_machine_account(PyObject *self, PyObject *args)
{
PyObject *py_lp_ctx = Py_None;
struct loadparm_context *lp_ctx;
NTSTATUS status;
struct cli_credentials *creds;
TALLOC_CTX *mem_ctx;
creds = PyCredentials_AsCliCredentials(self);
if (!PyArg_ParseTuple(args, "|O", &py_lp_ctx))
return NULL;
mem_ctx = talloc_new(NULL);
if (mem_ctx == NULL) {
PyErr_NoMemory();
return NULL;
}
lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
if (lp_ctx == NULL) {
talloc_free(mem_ctx);
return NULL;
}
status = cli_credentials_set_machine_account(creds, lp_ctx);
talloc_free(mem_ctx);
PyErr_NTSTATUS_IS_ERR_RAISE(status);
Py_RETURN_NONE;
}
NTSTATUS wbsrv_samba3_check_machacc(struct wbsrv_samba3_call *s3call)
{
NTSTATUS status;
struct cli_credentials *creds;
struct composite_context *ctx;
struct wbsrv_service *service =
s3call->wbconn->listen_socket->service;
/* Create a credentials structure */
creds = cli_credentials_init(s3call);
if (creds == NULL) {
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(creds, service->task->lp_ctx);
/* Connect the machine account to the credentials */
status = cli_credentials_set_machine_account(creds, service->task->lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(creds);
return status;
}
ctx = wb_cmd_pam_auth_send(s3call, service, creds);
if (!ctx) {
talloc_free(creds);
return NT_STATUS_NO_MEMORY;
}
ctx->async.fn = check_machacc_recv;
ctx->async.private_data = s3call;
s3call->flags |= WBSRV_CALL_FLAGS_REPLY_ASYNC;
return NT_STATUS_OK;
}
static NTSTATUS smb2srv_negprot_secblob(struct smb2srv_request *req, DATA_BLOB *_blob)
{
struct gensec_security *gensec_security;
DATA_BLOB null_data_blob = data_blob(NULL, 0);
DATA_BLOB blob;
NTSTATUS nt_status;
struct cli_credentials *server_credentials;
server_credentials = cli_credentials_init(req);
if (!server_credentials) {
smbsrv_terminate_connection(req->smb_conn, "Failed to init server credentials\n");
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(server_credentials, req->smb_conn->lp_ctx);
nt_status = cli_credentials_set_machine_account(server_credentials, req->smb_conn->lp_ctx);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(10, ("Failed to obtain server credentials, perhaps a standalone server?: %s\n", nt_errstr(nt_status)));
/*
* We keep the server_credentials as anonymous
* this is required for the spoolss.notify test
*/
}
req->smb_conn->negotiate.server_credentials = talloc_steal(req->smb_conn, server_credentials);
nt_status = samba_server_gensec_start(req,
req->smb_conn->connection->event.ctx,
req->smb_conn->connection->msg_ctx,
req->smb_conn->lp_ctx,
server_credentials,
"cifs",
&gensec_security);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0, ("Failed to start GENSEC: %s\n", nt_errstr(nt_status)));
smbsrv_terminate_connection(req->smb_conn, "Failed to start GENSEC\n");
return nt_status;
}
gensec_set_target_service(gensec_security, "cifs");
gensec_set_credentials(gensec_security, server_credentials);
nt_status = gensec_start_mech_by_oid(gensec_security, GENSEC_OID_SPNEGO);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0, ("Failed to start SPNEGO: %s\n", nt_errstr(nt_status)));
smbsrv_terminate_connection(req->smb_conn, "Failed to start SPNEGO\n");
return nt_status;
}
nt_status = gensec_update_ev(gensec_security, req, req->smb_conn->connection->event.ctx, null_data_blob, &blob);
if (!NT_STATUS_IS_OK(nt_status) && !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
DEBUG(0, ("Failed to get SPNEGO to give us the first token: %s\n", nt_errstr(nt_status)));
smbsrv_terminate_connection(req->smb_conn, "Failed to start SPNEGO - no first token\n");
return nt_status;
}
*_blob = blob;
return NT_STATUS_OK;
}
/**
* Obtain the client principal for this credentials context.
* @param cred credentials context
* @retval The username set on this context.
* @note Return value will never be NULL except by programmer error.
*/
_PUBLIC_ const char *cli_credentials_get_principal_and_obtained(struct cli_credentials *cred, TALLOC_CTX *mem_ctx, enum credentials_obtained *obtained)
{
if (cred->machine_account_pending) {
cli_credentials_set_machine_account(cred,
cred->machine_account_pending_lp_ctx);
}
if (cred->principal_obtained == CRED_CALLBACK &&
!cred->callback_running) {
cred->callback_running = true;
cred->principal = cred->principal_cb(cred);
cred->callback_running = false;
if (cred->principal_obtained == CRED_CALLBACK) {
cred->principal_obtained = CRED_CALLBACK_RESULT;
cli_credentials_invalidate_ccache(cred, cred->principal_obtained);
}
}
if (cred->principal_obtained < cred->username_obtained
|| cred->principal_obtained < MAX(cred->domain_obtained, cred->realm_obtained)) {
if (cred->domain_obtained > cred->realm_obtained) {
*obtained = MIN(cred->domain_obtained, cred->username_obtained);
return talloc_asprintf(mem_ctx, "%s@%s",
cli_credentials_get_username(cred),
cli_credentials_get_domain(cred));
} else {
*obtained = MIN(cred->domain_obtained, cred->username_obtained);
return talloc_asprintf(mem_ctx, "%s@%s",
cli_credentials_get_username(cred),
cli_credentials_get_realm(cred));
}
}
*obtained = cred->principal_obtained;
return talloc_strdup(mem_ctx, cred->principal);
}
/**
* Obtain the client principal for this credentials context.
* @param cred credentials context
* @retval The username set on this context.
* @note Return value will never be NULL except by programmer error.
*/
const char *cli_credentials_get_principal(struct cli_credentials *cred, TALLOC_CTX *mem_ctx)
{
if (cred->machine_account_pending) {
cli_credentials_set_machine_account(cred);
}
if (cred->principal_obtained == CRED_CALLBACK &&
!cred->callback_running) {
cred->callback_running = True;
cred->principal = cred->principal_cb(cred);
cred->callback_running = False;
cred->principal_obtained = CRED_SPECIFIED;
}
if (cred->principal_obtained < cred->username_obtained) {
if (cred->domain_obtained > cred->realm_obtained) {
return talloc_asprintf(mem_ctx, "%s@%s",
cli_credentials_get_username(cred),
cli_credentials_get_domain(cred));
} else {
return talloc_asprintf(mem_ctx, "%s@%s",
cli_credentials_get_username(cred),
cli_credentials_get_realm(cred));
}
}
return talloc_reference(mem_ctx, cred->principal);
}
/**
* Obtain the 'old' password for this credentials context (used for join accounts).
* @param cred credentials context
* @retval If set, the cleartext password, otherwise NULL
*/
const char *cli_credentials_get_old_password(struct cli_credentials *cred)
{
if (cred->machine_account_pending) {
cli_credentials_set_machine_account(cred);
}
return cred->old_password;
}
/*
parse any auth information from a dcerpc bind request
return false if we can't handle the auth request for some
reason (in which case we send a bind_nak)
*/
bool dcesrv_auth_bind(struct dcesrv_call_state *call)
{
struct cli_credentials *server_credentials;
struct ncacn_packet *pkt = &call->pkt;
struct dcesrv_connection *dce_conn = call->conn;
struct dcesrv_auth *auth = &dce_conn->auth_state;
NTSTATUS status;
uint32_t auth_length;
if (pkt->u.bind.auth_info.length == 0) {
dce_conn->auth_state.auth_info = NULL;
return true;
}
dce_conn->auth_state.auth_info = talloc(dce_conn, struct dcerpc_auth);
if (!dce_conn->auth_state.auth_info) {
return false;
}
status = dcerpc_pull_auth_trailer(pkt, call, &pkt->u.bind.auth_info,
dce_conn->auth_state.auth_info,
&auth_length, false);
server_credentials
= cli_credentials_init(call);
if (!server_credentials) {
DEBUG(1, ("Failed to init server credentials\n"));
return false;
}
cli_credentials_set_conf(server_credentials, call->conn->dce_ctx->lp_ctx);
status = cli_credentials_set_machine_account(server_credentials, call->conn->dce_ctx->lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("Failed to obtain server credentials, perhaps a standalone server?: %s\n", nt_errstr(status)));
talloc_free(server_credentials);
server_credentials = NULL;
}
status = samba_server_gensec_start(dce_conn, call->event_ctx,
call->msg_ctx,
call->conn->dce_ctx->lp_ctx,
server_credentials,
NULL,
&auth->gensec_security);
status = gensec_start_mech_by_authtype(auth->gensec_security, auth->auth_info->auth_type,
auth->auth_info->auth_level);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("Failed to start GENSEC mechanism for DCERPC server: auth_type=%d, auth_level=%d: %s\n",
(int)auth->auth_info->auth_type,
(int)auth->auth_info->auth_level,
nt_errstr(status)));
return false;
}
return true;
}
/**
* Obtain the username for this credentials context.
* @param cred credentials context
* @retval The username set on this context.
* @note Return value will never be NULL except by programmer error.
*/
const char *cli_credentials_get_username(struct cli_credentials *cred)
{
if (cred->machine_account_pending) {
cli_credentials_set_machine_account(cred);
}
if (cred->username_obtained == CRED_CALLBACK &&
!cred->callback_running) {
cred->callback_running = True;
cred->username = cred->username_cb(cred);
cred->callback_running = False;
cred->username_obtained = CRED_SPECIFIED;
}
return cred->username;
}
/**
* Obtain the password for this credentials context.
* @param cred credentials context
* @retval If set, the cleartext password, otherwise NULL
*/
const char *cli_credentials_get_password(struct cli_credentials *cred)
{
if (cred->machine_account_pending) {
cli_credentials_set_machine_account(cred);
}
if (cred->password_obtained == CRED_CALLBACK &&
!cred->callback_running) {
cred->callback_running = True;
cred->password = cred->password_cb(cred);
cred->callback_running = False;
cred->password_obtained = CRED_CALLBACK_RESULT;
}
return cred->password;
}
/**
* Obtain the Kerberos realm for this credentials context.
* @param cred credentials context
* @retval The realm set on this context.
* @note Return value will never be NULL except by programmer error.
*/
_PUBLIC_ const char *cli_credentials_get_realm(struct cli_credentials *cred)
{
if (cred->machine_account_pending) {
cli_credentials_set_machine_account(cred,
cred->machine_account_pending_lp_ctx);
}
if (cred->realm_obtained == CRED_CALLBACK &&
!cred->callback_running) {
cred->callback_running = true;
cred->realm = cred->realm_cb(cred);
cred->callback_running = false;
if (cred->realm_obtained == CRED_CALLBACK) {
cred->realm_obtained = CRED_CALLBACK_RESULT;
cli_credentials_invalidate_ccache(cred, cred->realm_obtained);
}
}
return cred->realm;
}
static void manage_gensec_request(enum stdio_helper_mode stdio_helper_mode,
struct loadparm_context *lp_ctx,
char *buf, int length, void **private1,
unsigned int mux_id, void **private2)
{
DATA_BLOB in;
DATA_BLOB out = data_blob(NULL, 0);
char *out_base64 = NULL;
const char *reply_arg = NULL;
struct gensec_ntlm_state {
struct gensec_security *gensec_state;
const char *set_password;
};
struct gensec_ntlm_state *state;
struct tevent_context *ev;
struct imessaging_context *msg;
NTSTATUS nt_status;
bool first = false;
const char *reply_code;
struct cli_credentials *creds;
static char *want_feature_list = NULL;
static DATA_BLOB session_key;
TALLOC_CTX *mem_ctx;
if (*private1) {
state = (struct gensec_ntlm_state *)*private1;
} else {
state = talloc_zero(NULL, struct gensec_ntlm_state);
if (!state) {
mux_printf(mux_id, "BH No Memory\n");
exit(1);
}
*private1 = state;
if (opt_password) {
state->set_password = opt_password;
}
}
if (strlen(buf) < 2) {
DEBUG(1, ("query [%s] invalid", buf));
mux_printf(mux_id, "BH Query invalid\n");
return;
}
if (strlen(buf) > 3) {
if(strncmp(buf, "SF ", 3) == 0) {
DEBUG(10, ("Setting flags to negotiate\n"));
talloc_free(want_feature_list);
want_feature_list = talloc_strndup(state, buf+3, strlen(buf)-3);
mux_printf(mux_id, "OK\n");
return;
}
in = base64_decode_data_blob(buf + 3);
} else {
in = data_blob(NULL, 0);
}
if (strncmp(buf, "YR", 2) == 0) {
if (state->gensec_state) {
talloc_free(state->gensec_state);
state->gensec_state = NULL;
}
} else if ( (strncmp(buf, "OK", 2) == 0)) {
/* Just return BH, like ntlm_auth from Samba 3 does. */
mux_printf(mux_id, "BH Command expected\n");
data_blob_free(&in);
return;
} else if ( (strncmp(buf, "TT ", 3) != 0) &&
(strncmp(buf, "KK ", 3) != 0) &&
(strncmp(buf, "AF ", 3) != 0) &&
(strncmp(buf, "NA ", 3) != 0) &&
(strncmp(buf, "UG", 2) != 0) &&
(strncmp(buf, "PW ", 3) != 0) &&
(strncmp(buf, "GK", 2) != 0) &&
(strncmp(buf, "GF", 2) != 0)) {
DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
mux_printf(mux_id, "BH SPNEGO request invalid\n");
data_blob_free(&in);
return;
}
ev = s4_event_context_init(state);
if (!ev) {
exit(1);
}
mem_ctx = talloc_named(NULL, 0, "manage_gensec_request internal mem_ctx");
/* setup gensec */
if (!(state->gensec_state)) {
switch (stdio_helper_mode) {
case GSS_SPNEGO_CLIENT:
case NTLMSSP_CLIENT_1:
/* setup the client side */
nt_status = gensec_client_start(NULL, &state->gensec_state, ev,
lpcfg_gensec_settings(NULL, lp_ctx));
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(mem_ctx);
exit(1);
}
break;
case GSS_SPNEGO_SERVER:
case SQUID_2_5_NTLMSSP:
{
const char *winbind_method[] = { "winbind", NULL };
struct auth4_context *auth_context;
msg = imessaging_client_init(state, lpcfg_imessaging_path(state, lp_ctx), ev);
if (!msg) {
talloc_free(mem_ctx);
exit(1);
}
nt_status = auth_context_create_methods(mem_ctx,
winbind_method,
ev,
msg,
lp_ctx,
NULL,
&auth_context);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(mem_ctx);
exit(1);
}
if (!NT_STATUS_IS_OK(gensec_server_start(state, ev,
lpcfg_gensec_settings(state, lp_ctx),
auth_context, &state->gensec_state))) {
talloc_free(mem_ctx);
exit(1);
}
break;
}
default:
talloc_free(mem_ctx);
abort();
}
creds = cli_credentials_init(state->gensec_state);
cli_credentials_set_conf(creds, lp_ctx);
if (opt_username) {
cli_credentials_set_username(creds, opt_username, CRED_SPECIFIED);
}
if (opt_domain) {
cli_credentials_set_domain(creds, opt_domain, CRED_SPECIFIED);
}
if (state->set_password) {
cli_credentials_set_password(creds, state->set_password, CRED_SPECIFIED);
} else {
cli_credentials_set_password_callback(creds, get_password);
creds->priv_data = (void*)(uintptr_t)mux_id;
}
if (opt_workstation) {
cli_credentials_set_workstation(creds, opt_workstation, CRED_SPECIFIED);
}
switch (stdio_helper_mode) {
case GSS_SPNEGO_SERVER:
case SQUID_2_5_NTLMSSP:
cli_credentials_set_machine_account(creds, lp_ctx);
break;
default:
break;
}
gensec_set_credentials(state->gensec_state, creds);
gensec_want_feature_list(state->gensec_state, want_feature_list);
switch (stdio_helper_mode) {
case GSS_SPNEGO_CLIENT:
case GSS_SPNEGO_SERVER:
nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_SPNEGO);
if (!in.length) {
first = true;
}
break;
case NTLMSSP_CLIENT_1:
if (!in.length) {
first = true;
}
/* fall through */
case SQUID_2_5_NTLMSSP:
nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_NTLMSSP);
break;
default:
talloc_free(mem_ctx);
abort();
}
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(1, ("GENSEC mech failed to start: %s\n", nt_errstr(nt_status)));
mux_printf(mux_id, "BH GENSEC mech failed to start\n");
talloc_free(mem_ctx);
return;
}
}
/* update */
if (strncmp(buf, "PW ", 3) == 0) {
state->set_password = talloc_strndup(state,
(const char *)in.data,
in.length);
cli_credentials_set_password(gensec_get_credentials(state->gensec_state),
state->set_password,
CRED_SPECIFIED);
mux_printf(mux_id, "OK\n");
data_blob_free(&in);
talloc_free(mem_ctx);
return;
}
if (strncmp(buf, "UG", 2) == 0) {
int i;
char *grouplist = NULL;
struct auth_session_info *session_info;
nt_status = gensec_session_info(state->gensec_state, mem_ctx, &session_info);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(1, ("gensec_session_info failed: %s\n", nt_errstr(nt_status)));
mux_printf(mux_id, "BH %s\n", nt_errstr(nt_status));
data_blob_free(&in);
talloc_free(mem_ctx);
return;
}
/* get the string onto the context */
grouplist = talloc_strdup(mem_ctx, "");
for (i=0; i<session_info->security_token->num_sids; i++) {
struct security_token *token = session_info->security_token;
const char *sidstr = dom_sid_string(session_info,
&token->sids[i]);
grouplist = talloc_asprintf_append_buffer(grouplist, "%s,", sidstr);
}
mux_printf(mux_id, "GL %s\n", grouplist);
talloc_free(session_info);
data_blob_free(&in);
talloc_free(mem_ctx);
return;
}
if (strncmp(buf, "GK", 2) == 0) {
char *base64_key;
DEBUG(10, ("Requested session key\n"));
nt_status = gensec_session_key(state->gensec_state, mem_ctx, &session_key);
if(!NT_STATUS_IS_OK(nt_status)) {
DEBUG(1, ("gensec_session_key failed: %s\n", nt_errstr(nt_status)));
mux_printf(mux_id, "BH No session key\n");
talloc_free(mem_ctx);
return;
} else {
base64_key = base64_encode_data_blob(state, session_key);
mux_printf(mux_id, "GK %s\n", base64_key);
talloc_free(base64_key);
}
talloc_free(mem_ctx);
return;
}
if (strncmp(buf, "GF", 2) == 0) {
struct ntlmssp_state *ntlmssp_state;
uint32_t neg_flags;
ntlmssp_state = talloc_get_type(state->gensec_state->private_data,
struct ntlmssp_state);
neg_flags = ntlmssp_state->neg_flags;
DEBUG(10, ("Requested negotiated feature flags\n"));
mux_printf(mux_id, "GF 0x%08x\n", neg_flags);
return;
}
nt_status = gensec_update(state->gensec_state, mem_ctx, in, &out);
/* don't leak 'bad password'/'no such user' info to the network client */
nt_status = nt_status_squash(nt_status);
if (out.length) {
out_base64 = base64_encode_data_blob(mem_ctx, out);
} else {
out_base64 = NULL;
}
if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
reply_arg = "*";
if (first) {
reply_code = "YR";
} else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
reply_code = "KK";
} else if (state->gensec_state->gensec_role == GENSEC_SERVER) {
reply_code = "TT";
} else {
abort();
}
} else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
reply_code = "BH NT_STATUS_ACCESS_DENIED";
reply_arg = nt_errstr(nt_status);
DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
} else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_UNSUCCESSFUL)) {
reply_code = "BH NT_STATUS_UNSUCCESSFUL";
reply_arg = nt_errstr(nt_status);
DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
} else if (!NT_STATUS_IS_OK(nt_status)) {
reply_code = "NA";
reply_arg = nt_errstr(nt_status);
DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
} else if /* OK */ (state->gensec_state->gensec_role == GENSEC_SERVER) {
struct auth_session_info *session_info;
nt_status = gensec_session_info(state->gensec_state, mem_ctx, &session_info);
if (!NT_STATUS_IS_OK(nt_status)) {
reply_code = "BH Failed to retrive session info";
reply_arg = nt_errstr(nt_status);
DEBUG(1, ("GENSEC failed to retrieve the session info: %s\n", nt_errstr(nt_status)));
} else {
reply_code = "AF";
reply_arg = talloc_asprintf(state->gensec_state,
"%s%s%s", session_info->info->domain_name,
lpcfg_winbind_separator(lp_ctx), session_info->info->account_name);
talloc_free(session_info);
}
} else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
reply_code = "AF";
reply_arg = out_base64;
} else {
abort();
}
switch (stdio_helper_mode) {
case GSS_SPNEGO_SERVER:
mux_printf(mux_id, "%s %s %s\n", reply_code,
out_base64 ? out_base64 : "*",
reply_arg ? reply_arg : "*");
break;
default:
if (out_base64) {
mux_printf(mux_id, "%s %s\n", reply_code, out_base64);
} else if (reply_arg) {
mux_printf(mux_id, "%s %s\n", reply_code, reply_arg);
} else {
mux_printf(mux_id, "%s\n", reply_code);
}
}
talloc_free(mem_ctx);
return;
}
_PUBLIC_ int cli_credentials_get_named_ccache(struct cli_credentials *cred,
struct tevent_context *event_ctx,
struct loadparm_context *lp_ctx,
char *ccache_name,
struct ccache_container **ccc,
const char **error_string)
{
krb5_error_code ret;
enum credentials_obtained obtained;
if (cred->machine_account_pending) {
cli_credentials_set_machine_account(cred, lp_ctx);
}
if (cred->ccache_obtained >= cred->ccache_threshold &&
cred->ccache_obtained > CRED_UNINITIALISED) {
time_t lifetime;
bool expired = false;
ret = smb_krb5_cc_get_lifetime(cred->ccache->smb_krb5_context->krb5_context,
cred->ccache->ccache, &lifetime);
if (ret == KRB5_CC_END) {
/* If we have a particular ccache set, without
* an initial ticket, then assume there is a
* good reason */
} else if (ret == 0) {
if (lifetime == 0) {
DEBUG(3, ("Ticket in credentials cache for %s expired, will refresh\n",
cli_credentials_get_principal(cred, cred)));
expired = true;
} else if (lifetime < 300) {
DEBUG(3, ("Ticket in credentials cache for %s will shortly expire (%u secs), will refresh\n",
cli_credentials_get_principal(cred, cred), (unsigned int)lifetime));
expired = true;
}
} else {
(*error_string) = talloc_asprintf(cred, "failed to get ccache lifetime: %s\n",
smb_get_krb5_error_message(cred->ccache->smb_krb5_context->krb5_context,
ret, cred));
return ret;
}
DEBUG(5, ("Ticket in credentials cache for %s will expire in %u secs\n",
cli_credentials_get_principal(cred, cred), (unsigned int)lifetime));
if (!expired) {
*ccc = cred->ccache;
return 0;
}
}
if (cli_credentials_is_anonymous(cred)) {
(*error_string) = "Cannot get anonymous kerberos credentials";
return EINVAL;
}
ret = cli_credentials_new_ccache(cred, lp_ctx, ccache_name, ccc, error_string);
if (ret) {
return ret;
}
ret = kinit_to_ccache(cred, cred, (*ccc)->smb_krb5_context, event_ctx, (*ccc)->ccache, &obtained, error_string);
if (ret) {
return ret;
}
ret = cli_credentials_set_from_ccache(cred, *ccc,
obtained, error_string);
cred->ccache = *ccc;
cred->ccache_obtained = cred->principal_obtained;
if (ret) {
return ret;
}
cli_credentials_invalidate_client_gss_creds(cred, cred->ccache_obtained);
return 0;
}
struct composite_context *wb_init_domain_send(TALLOC_CTX *mem_ctx,
struct wbsrv_service *service,
struct wb_dom_info *dom_info)
{
struct composite_context *result, *ctx;
struct init_domain_state *state;
result = composite_create(mem_ctx, service->task->event_ctx);
if (result == NULL) goto failed;
state = talloc_zero(result, struct init_domain_state);
if (state == NULL) goto failed;
state->ctx = result;
result->private_data = state;
state->service = service;
state->domain = talloc(state, struct wbsrv_domain);
if (state->domain == NULL) goto failed;
state->domain->service = service;
state->domain->info = talloc_reference(state->domain, dom_info);
if (state->domain->info == NULL) goto failed;
state->domain->dc_name = dom_info->dc->name;
state->domain->dc_address = dom_info->dc->address;
state->domain->libnet_ctx = libnet_context_init(service->task->event_ctx,
service->task->lp_ctx);
if (state->domain->libnet_ctx == NULL) goto failed;
talloc_steal(state->domain, state->domain->libnet_ctx);
/* Create a credentials structure */
state->domain->libnet_ctx->cred = cli_credentials_init(state->domain);
if (state->domain->libnet_ctx->cred == NULL) goto failed;
cli_credentials_set_conf(state->domain->libnet_ctx->cred, service->task->lp_ctx);
/* Connect the machine account to the credentials */
state->ctx->status =
cli_credentials_set_machine_account(state->domain->libnet_ctx->cred, state->domain->libnet_ctx->lp_ctx);
if (!NT_STATUS_IS_OK(state->ctx->status)) goto failed;
state->domain->netlogon_binding = init_domain_binding(state, &ndr_table_netlogon);
state->domain->netlogon_pipe = NULL;
state->domain->netlogon_queue = tevent_queue_create(state->domain,
"netlogon_queue");
if (state->domain->netlogon_queue == NULL) goto failed;
/* We start the queue when the connection is usable */
tevent_queue_stop(state->domain->netlogon_queue);
if ((!cli_credentials_is_anonymous(state->domain->libnet_ctx->cred)) &&
((lpcfg_server_role(service->task->lp_ctx) == ROLE_DOMAIN_MEMBER) ||
(lpcfg_server_role(service->task->lp_ctx) == ROLE_ACTIVE_DIRECTORY_DC)) &&
(dom_sid_equal(state->domain->info->sid,
state->service->primary_sid))) {
uint32_t flags = DCERPC_SCHANNEL | DCERPC_SCHANNEL_AUTO;
/* For debugging, it can be a real pain if all the traffic is encrypted */
if (lpcfg_winbind_sealed_pipes(service->task->lp_ctx)) {
flags |= DCERPC_SIGN | DCERPC_SEAL;
} else {
flags |= DCERPC_SIGN;
}
state->ctx->status = dcerpc_binding_set_flags(state->domain->netlogon_binding,
flags, 0);
if (!NT_STATUS_IS_OK(state->ctx->status)) goto failed;
}
/* No encryption on anonymous pipes */
ctx = dcerpc_pipe_connect_b_send(state, state->domain->netlogon_binding,
&ndr_table_netlogon,
state->domain->libnet_ctx->cred,
service->task->event_ctx,
service->task->lp_ctx);
if (composite_nomem(ctx, state->ctx)) {
goto failed;
}
composite_continue(state->ctx, ctx, init_domain_recv_netlogonpipe,
state);
return result;
failed:
talloc_free(result);
return NULL;
}
/*
connect to a share - used when a tree_connect operation comes in.
*/
static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs,
struct ntvfs_request *req,
union smb_tcon *tcon)
{
NTSTATUS status;
struct cvfs_private *p;
const char *host, *user, *pass, *domain, *remote_share;
struct smb_composite_connect io;
struct composite_context *creq;
struct share_config *scfg = ntvfs->ctx->config;
struct cli_credentials *credentials;
bool machine_account;
bool s4u2proxy;
const char* sharename;
switch (tcon->generic.level) {
case RAW_TCON_TCON:
sharename = tcon->tcon.in.service;
break;
case RAW_TCON_TCONX:
sharename = tcon->tconx.in.path;
break;
case RAW_TCON_SMB2:
sharename = tcon->smb2.in.path;
break;
default:
return NT_STATUS_INVALID_LEVEL;
}
if (strncmp(sharename, "\\\\", 2) == 0) {
char *str = strchr(sharename+2, '\\');
if (str) {
sharename = str + 1;
}
}
/* Here we need to determine which server to connect to.
* For now we use parametric options, type cifs.
* Later we will use security=server and auth_server.c.
*/
host = share_string_option(scfg, CIFS_SERVER, NULL);
user = share_string_option(scfg, CIFS_USER, NULL);
pass = share_string_option(scfg, CIFS_PASSWORD, NULL);
domain = share_string_option(scfg, CIFS_DOMAIN, NULL);
remote_share = share_string_option(scfg, CIFS_SHARE, NULL);
if (!remote_share) {
remote_share = sharename;
}
machine_account = share_bool_option(scfg, CIFS_USE_MACHINE_ACCT, CIFS_USE_MACHINE_ACCT_DEFAULT);
s4u2proxy = share_bool_option(scfg, CIFS_USE_S4U2PROXY, CIFS_USE_S4U2PROXY_DEFAULT);
p = talloc_zero(ntvfs, struct cvfs_private);
if (!p) {
return NT_STATUS_NO_MEMORY;
}
ntvfs->private_data = p;
if (!host) {
DEBUG(1,("CIFS backend: You must supply server\n"));
return NT_STATUS_INVALID_PARAMETER;
}
if (user && pass) {
DEBUG(5, ("CIFS backend: Using specified password\n"));
credentials = cli_credentials_init(p);
if (!credentials) {
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
if (domain) {
cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
}
cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
} else if (machine_account) {
DEBUG(5, ("CIFS backend: Using machine account\n"));
credentials = cli_credentials_init(p);
cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
if (domain) {
cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
}
status = cli_credentials_set_machine_account(credentials, ntvfs->ctx->lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
} else if (req->session_info->credentials) {
DEBUG(5, ("CIFS backend: Using delegated credentials\n"));
credentials = req->session_info->credentials;
} else if (s4u2proxy) {
struct ccache_container *ccc = NULL;
const char *err_str = NULL;
int ret;
char *impersonate_principal;
char *self_service;
char *target_service;
impersonate_principal = talloc_asprintf(req, "%s@%s",
req->session_info->info->account_name,
req->session_info->info->domain_name);
self_service = talloc_asprintf(req, "cifs/%s",
lpcfg_netbios_name(ntvfs->ctx->lp_ctx));
target_service = talloc_asprintf(req, "cifs/%s", host);
DEBUG(5, ("CIFS backend: Using S4U2Proxy credentials\n"));
credentials = cli_credentials_init(p);
cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
if (domain) {
cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
}
status = cli_credentials_set_machine_account(credentials, ntvfs->ctx->lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
cli_credentials_invalidate_ccache(credentials, CRED_SPECIFIED);
cli_credentials_set_impersonate_principal(credentials,
impersonate_principal,
self_service);
cli_credentials_set_target_service(credentials, target_service);
ret = cli_credentials_get_ccache(credentials,
ntvfs->ctx->event_ctx,
ntvfs->ctx->lp_ctx,
&ccc,
&err_str);
if (ret != 0) {
status = NT_STATUS_CROSSREALM_DELEGATION_FAILURE;
DEBUG(1,("S4U2Proxy: cli_credentials_get_ccache() gave: ret[%d] str[%s] - %s\n",
ret, err_str, nt_errstr(status)));
return status;
}
} else {
DEBUG(1,("CIFS backend: NO delegated credentials found: You must supply server, user and password or the client must supply delegated credentials\n"));
return NT_STATUS_INTERNAL_ERROR;
}
/* connect to the server, using the smbd event context */
io.in.dest_host = host;
io.in.dest_ports = lpcfg_smb_ports(ntvfs->ctx->lp_ctx);
io.in.socket_options = lpcfg_socket_options(ntvfs->ctx->lp_ctx);
io.in.called_name = host;
io.in.credentials = credentials;
io.in.fallback_to_anonymous = false;
io.in.workgroup = lpcfg_workgroup(ntvfs->ctx->lp_ctx);
io.in.service = remote_share;
io.in.service_type = "?????";
io.in.gensec_settings = lpcfg_gensec_settings(p, ntvfs->ctx->lp_ctx);
lpcfg_smbcli_options(ntvfs->ctx->lp_ctx, &io.in.options);
lpcfg_smbcli_session_options(ntvfs->ctx->lp_ctx, &io.in.session_options);
if (!(ntvfs->ctx->client_caps & NTVFS_CLIENT_CAP_LEVEL_II_OPLOCKS)) {
io.in.options.use_level2_oplocks = false;
}
creq = smb_composite_connect_send(&io, p,
lpcfg_resolve_context(ntvfs->ctx->lp_ctx),
ntvfs->ctx->event_ctx);
status = smb_composite_connect_recv(creq, p);
NT_STATUS_NOT_OK_RETURN(status);
p->tree = io.out.tree;
p->transport = p->tree->session->transport;
SETUP_PID;
p->ntvfs = ntvfs;
ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
if (tcon->generic.level == RAW_TCON_TCONX) {
tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
}
/* we need to receive oplock break requests from the server */
smbcli_oplock_handler(p->transport, oplock_handler, p);
p->map_generic = share_bool_option(scfg, CIFS_MAP_GENERIC, CIFS_MAP_GENERIC_DEFAULT);
p->map_trans2 = share_bool_option(scfg, CIFS_MAP_TRANS2, CIFS_MAP_TRANS2_DEFAULT);
return NT_STATUS_OK;
}
struct composite_context *wb_init_domain_send(TALLOC_CTX *mem_ctx,
struct wbsrv_service *service,
struct wb_dom_info *dom_info)
{
struct composite_context *result, *ctx;
struct init_domain_state *state;
result = composite_create(mem_ctx, service->task->event_ctx);
if (result == NULL) goto failed;
state = talloc_zero(result, struct init_domain_state);
if (state == NULL) goto failed;
state->ctx = result;
result->private_data = state;
state->service = service;
state->domain = talloc(state, struct wbsrv_domain);
if (state->domain == NULL) goto failed;
state->domain->info = talloc_reference(state->domain, dom_info);
if (state->domain->info == NULL) goto failed;
/* Caller should check, but to be safe: */
if (dom_info->num_dcs < 1) {
goto failed;
}
/* For now, we just pick the first. The next step will be to
* walk the entire list. Also need to fix finddcs() to return
* the entire list */
state->domain->dc_name = dom_info->dcs[0].name;
state->domain->dc_address = dom_info->dcs[0].address;
/* Create a credentials structure */
state->domain->schannel_creds = cli_credentials_init(state->domain);
if (state->domain->schannel_creds == NULL) goto failed;
cli_credentials_set_event_context(state->domain->schannel_creds, service->task->event_ctx);
cli_credentials_set_conf(state->domain->schannel_creds);
/* Connect the machine account to the credentials */
state->ctx->status =
cli_credentials_set_machine_account(state->domain->
schannel_creds);
if (!NT_STATUS_IS_OK(state->ctx->status)) goto failed;
state->domain->netlogon_binding = init_domain_binding(state, &dcerpc_table_netlogon);
state->domain->netlogon_pipe = NULL;
if ((!cli_credentials_is_anonymous(state->domain->schannel_creds)) &&
((lp_server_role() == ROLE_DOMAIN_MEMBER) &&
(dom_sid_equal(state->domain->info->sid,
state->service->primary_sid)))) {
state->domain->netlogon_binding->flags |= DCERPC_SCHANNEL;
/* For debugging, it can be a real pain if all the traffic is encrypted */
if (lp_winbind_sealed_pipes()) {
state->domain->netlogon_binding->flags |= (DCERPC_SIGN | DCERPC_SEAL );
} else {
state->domain->netlogon_binding->flags |= (DCERPC_SIGN);
}
}
/* No encryption on anonymous pipes */
ctx = dcerpc_pipe_connect_b_send(state, state->domain->netlogon_binding,
&dcerpc_table_netlogon,
state->domain->schannel_creds,
service->task->event_ctx);
if (composite_nomem(ctx, state->ctx)) {
goto failed;
}
composite_continue(state->ctx, ctx, init_domain_recv_netlogonpipe,
state);
return result;
failed:
talloc_free(result);
return NULL;
}
NTSTATUS libnet_SamSync_netlogon(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_SamSync *r)
{
NTSTATUS nt_status, dbsync_nt_status;
TALLOC_CTX *samsync_ctx, *loop_ctx, *delta_ctx;
struct netlogon_creds_CredentialState *creds;
struct netr_DatabaseSync dbsync;
struct netr_Authenticator credential, return_authenticator;
struct netr_DELTA_ENUM_ARRAY *delta_enum_array = NULL;
struct cli_credentials *machine_account;
struct dcerpc_pipe *p;
struct libnet_context *machine_net_ctx;
struct libnet_RpcConnect *c;
struct libnet_SamSync_state *state;
const enum netr_SamDatabaseID database_ids[] = {SAM_DATABASE_DOMAIN, SAM_DATABASE_BUILTIN, SAM_DATABASE_PRIVS};
unsigned int i;
samsync_ctx = talloc_named(mem_ctx, 0, "SamSync top context");
if (!r->in.machine_account) {
machine_account = cli_credentials_init(samsync_ctx);
if (!machine_account) {
talloc_free(samsync_ctx);
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(machine_account, ctx->lp_ctx);
nt_status = cli_credentials_set_machine_account(machine_account, ctx->lp_ctx);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_strdup(mem_ctx, "Could not obtain machine account password - are we joined to the domain?");
talloc_free(samsync_ctx);
return nt_status;
}
} else {
machine_account = r->in.machine_account;
}
/* We cannot do this unless we are a BDC. Check, before we get odd errors later */
if (cli_credentials_get_secure_channel_type(machine_account) != SEC_CHAN_BDC) {
r->out.error_string
= talloc_asprintf(mem_ctx,
"Our join to domain %s is not as a BDC (%d), please rejoin as a BDC",
cli_credentials_get_domain(machine_account),
cli_credentials_get_secure_channel_type(machine_account));
talloc_free(samsync_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
c = talloc_zero(samsync_ctx, struct libnet_RpcConnect);
if (!c) {
r->out.error_string = NULL;
talloc_free(samsync_ctx);
return NT_STATUS_NO_MEMORY;
}
c->level = LIBNET_RPC_CONNECT_DC_INFO;
if (r->in.binding_string) {
c->in.binding = r->in.binding_string;
c->in.name = NULL;
} else {
c->in.binding = NULL;
c->in.name = cli_credentials_get_domain(machine_account);
}
/* prepare connect to the NETLOGON pipe of PDC */
c->in.dcerpc_iface = &ndr_table_netlogon;
/* We must do this as the machine, not as any command-line
* user. So we override the credentials in the
* libnet_context */
machine_net_ctx = talloc(samsync_ctx, struct libnet_context);
if (!machine_net_ctx) {
r->out.error_string = NULL;
talloc_free(samsync_ctx);
return NT_STATUS_NO_MEMORY;
}
*machine_net_ctx = *ctx;
machine_net_ctx->cred = machine_account;
/* connect to the NETLOGON pipe of the PDC */
nt_status = libnet_RpcConnect(machine_net_ctx, samsync_ctx, c);
if (!NT_STATUS_IS_OK(nt_status)) {
if (r->in.binding_string) {
r->out.error_string = talloc_asprintf(mem_ctx,
"Connection to NETLOGON pipe of DC %s failed: %s",
r->in.binding_string, c->out.error_string);
} else {
r->out.error_string = talloc_asprintf(mem_ctx,
"Connection to NETLOGON pipe of DC for %s failed: %s",
c->in.name, c->out.error_string);
}
talloc_free(samsync_ctx);
return nt_status;
}
/* This makes a new pipe, on which we can do schannel. We
* should do this in the RpcConnect code, but the abstaction
* layers do not suit yet */
nt_status = dcerpc_secondary_connection(c->out.dcerpc_pipe, &p,
c->out.dcerpc_pipe->binding);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_asprintf(mem_ctx,
"Secondary connection to NETLOGON pipe of DC %s failed: %s",
dcerpc_server_name(p), nt_errstr(nt_status));
talloc_free(samsync_ctx);
return nt_status;
}
nt_status = dcerpc_bind_auth_schannel(samsync_ctx, p, &ndr_table_netlogon,
machine_account, ctx->lp_ctx, DCERPC_AUTH_LEVEL_PRIVACY);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_asprintf(mem_ctx,
"SCHANNEL authentication to NETLOGON pipe of DC %s failed: %s",
dcerpc_server_name(p), nt_errstr(nt_status));
talloc_free(samsync_ctx);
return nt_status;
}
state = talloc(samsync_ctx, struct libnet_SamSync_state);
if (!state) {
r->out.error_string = NULL;
talloc_free(samsync_ctx);
return nt_status;
}
state->domain_name = c->out.domain_name;
state->domain_sid = c->out.domain_sid;
state->realm = c->out.realm;
state->domain_guid = c->out.guid;
state->machine_net_ctx = machine_net_ctx;
state->netlogon_pipe = p;
/* initialise the callback layer. It may wish to contact the
* server with ldap, now we know the name */
if (r->in.init_fn) {
char *error_string;
nt_status = r->in.init_fn(samsync_ctx,
r->in.fn_ctx,
state,
&error_string);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_steal(mem_ctx, error_string);
talloc_free(samsync_ctx);
return nt_status;
}
}
/* get NETLOGON credentials */
nt_status = dcerpc_schannel_creds(p->conn->security_state.generic_state, samsync_ctx, &creds);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_strdup(mem_ctx, "Could not obtain NETLOGON credentials from DCERPC/GENSEC layer");
talloc_free(samsync_ctx);
return nt_status;
}
/* Setup details for the synchronisation */
ZERO_STRUCT(return_authenticator);
dbsync.in.logon_server = talloc_asprintf(samsync_ctx, "\\\\%s", dcerpc_server_name(p));
dbsync.in.computername = cli_credentials_get_workstation(machine_account);
dbsync.in.preferredmaximumlength = (uint32_t)-1;
dbsync.in.return_authenticator = &return_authenticator;
dbsync.out.return_authenticator = &return_authenticator;
dbsync.out.delta_enum_array = &delta_enum_array;
for (i=0;i< ARRAY_SIZE(database_ids); i++) {
uint32_t sync_context = 0;
dbsync.in.database_id = database_ids[i];
dbsync.in.sync_context = &sync_context;
dbsync.out.sync_context = &sync_context;
do {
uint32_t d;
loop_ctx = talloc_named(samsync_ctx, 0, "DatabaseSync loop context");
netlogon_creds_client_authenticator(creds, &credential);
dbsync.in.credential = &credential;
dbsync_nt_status = dcerpc_netr_DatabaseSync_r(p->binding_handle, loop_ctx, &dbsync);
if (NT_STATUS_IS_OK(dbsync_nt_status) && !NT_STATUS_IS_OK(dbsync.out.result)) {
dbsync_nt_status = dbsync.out.result;
}
if (!NT_STATUS_IS_OK(dbsync_nt_status) &&
!NT_STATUS_EQUAL(dbsync_nt_status, STATUS_MORE_ENTRIES)) {
r->out.error_string = talloc_asprintf(mem_ctx, "DatabaseSync failed - %s", nt_errstr(nt_status));
talloc_free(samsync_ctx);
return nt_status;
}
if (!netlogon_creds_client_check(creds, &dbsync.out.return_authenticator->cred)) {
r->out.error_string = talloc_strdup(mem_ctx, "Credential chaining on incoming DatabaseSync failed");
talloc_free(samsync_ctx);
return NT_STATUS_ACCESS_DENIED;
}
dbsync.in.sync_context = dbsync.out.sync_context;
/* For every single remote 'delta' entry: */
for (d=0; d < delta_enum_array->num_deltas; d++) {
char *error_string = NULL;
delta_ctx = talloc_named(loop_ctx, 0, "DatabaseSync delta context");
/* 'Fix' elements, by decrypting and
* de-obfuscating the data */
nt_status = samsync_fix_delta(delta_ctx,
creds,
dbsync.in.database_id,
&delta_enum_array->delta_enum[d]);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_steal(mem_ctx, error_string);
talloc_free(samsync_ctx);
return nt_status;
}
/* Now call the callback. This will
* do something like print the data or
* write to an ldb */
nt_status = r->in.delta_fn(delta_ctx,
r->in.fn_ctx,
dbsync.in.database_id,
&delta_enum_array->delta_enum[d],
&error_string);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_steal(mem_ctx, error_string);
talloc_free(samsync_ctx);
return nt_status;
}
talloc_free(delta_ctx);
}
talloc_free(loop_ctx);
} while (NT_STATUS_EQUAL(dbsync_nt_status, STATUS_MORE_ENTRIES));
if (!NT_STATUS_IS_OK(dbsync_nt_status)) {
r->out.error_string = talloc_asprintf(mem_ctx, "libnet_SamSync_netlogon failed: unexpected inconsistancy. Should not get error %s here", nt_errstr(nt_status));
talloc_free(samsync_ctx);
return dbsync_nt_status;
}
nt_status = NT_STATUS_OK;
}
talloc_free(samsync_ctx);
return nt_status;
}
/*
initialise a server_context from a open socket and register a event handler
for reading from that socket
*/
static void ldapsrv_accept(struct stream_connection *c,
struct auth_session_info *session_info)
{
struct ldapsrv_service *ldapsrv_service =
talloc_get_type(c->private_data, struct ldapsrv_service);
struct ldapsrv_connection *conn;
struct cli_credentials *server_credentials;
struct socket_address *socket_address;
NTSTATUS status;
int port;
conn = talloc_zero(c, struct ldapsrv_connection);
if (!conn) {
stream_terminate_connection(c, "ldapsrv_accept: out of memory");
return;
}
conn->packet = NULL;
conn->connection = c;
conn->service = ldapsrv_service;
conn->sockets.raw = c->socket;
conn->lp_ctx = ldapsrv_service->task->lp_ctx;
c->private_data = conn;
socket_address = socket_get_my_addr(c->socket, conn);
if (!socket_address) {
ldapsrv_terminate_connection(conn, "ldapsrv_accept: failed to obtain local socket address!");
return;
}
port = socket_address->port;
talloc_free(socket_address);
if (port == 636) {
struct socket_context *tls_socket = tls_init_server(ldapsrv_service->tls_params, c->socket,
c->event.fde, NULL);
if (!tls_socket) {
ldapsrv_terminate_connection(conn, "ldapsrv_accept: tls_init_server() failed");
return;
}
talloc_steal(c, tls_socket);
c->socket = tls_socket;
conn->sockets.tls = tls_socket;
} else if (port == 3268) /* Global catalog */ {
conn->global_catalog = true;
}
conn->packet = packet_init(conn);
if (conn->packet == NULL) {
ldapsrv_terminate_connection(conn, "out of memory");
return;
}
packet_set_private(conn->packet, conn);
packet_set_socket(conn->packet, c->socket);
packet_set_callback(conn->packet, ldapsrv_decode);
packet_set_full_request(conn->packet, ldap_full_packet);
packet_set_error_handler(conn->packet, ldapsrv_error_handler);
packet_set_event_context(conn->packet, c->event.ctx);
packet_set_fde(conn->packet, c->event.fde);
packet_set_serialise(conn->packet);
if (conn->sockets.tls) {
packet_set_unreliable_select(conn->packet);
}
/* Ensure we don't get packets until the database is ready below */
packet_recv_disable(conn->packet);
server_credentials = cli_credentials_init(conn);
if (!server_credentials) {
stream_terminate_connection(c, "Failed to init server credentials\n");
return;
}
cli_credentials_set_conf(server_credentials, conn->lp_ctx);
status = cli_credentials_set_machine_account(server_credentials, conn->lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
stream_terminate_connection(c, talloc_asprintf(conn, "Failed to obtain server credentials, perhaps a standalone server?: %s\n", nt_errstr(status)));
return;
}
conn->server_credentials = server_credentials;
conn->session_info = talloc_move(conn, &session_info);
if (!NT_STATUS_IS_OK(ldapsrv_backend_Init(conn))) {
ldapsrv_terminate_connection(conn, "backend Init failed");
return;
}
/* load limits from the conf partition */
ldapsrv_load_limits(conn); /* should we fail on error ? */
/* register the server */
irpc_add_name(c->msg_ctx, "ldap_server");
/* set connections limits */
conn->limits.ite = event_add_timed(c->event.ctx, conn,
timeval_current_ofs(conn->limits.initial_timeout, 0),
ldapsrv_conn_init_timeout, conn);
packet_recv_enable(conn->packet);
}
/*
initialise a server_context from a open socket and register a event handler
for reading from that socket
*/
static void ldapsrv_accept(struct stream_connection *c,
struct auth_session_info *session_info,
bool is_privileged)
{
struct ldapsrv_service *ldapsrv_service =
talloc_get_type(c->private_data, struct ldapsrv_service);
struct ldapsrv_connection *conn;
struct cli_credentials *server_credentials;
struct socket_address *socket_address;
NTSTATUS status;
int port;
int ret;
struct tevent_req *subreq;
struct timeval endtime;
conn = talloc_zero(c, struct ldapsrv_connection);
if (!conn) {
stream_terminate_connection(c, "ldapsrv_accept: out of memory");
return;
}
conn->is_privileged = is_privileged;
conn->sockets.send_queue = tevent_queue_create(conn, "ldapsev send queue");
if (conn->sockets.send_queue == NULL) {
stream_terminate_connection(c,
"ldapsrv_accept: tevent_queue_create failed");
return;
}
TALLOC_FREE(c->event.fde);
ret = tstream_bsd_existing_socket(conn,
socket_get_fd(c->socket),
&conn->sockets.raw);
if (ret == -1) {
stream_terminate_connection(c,
"ldapsrv_accept: out of memory");
return;
}
socket_set_flags(c->socket, SOCKET_FLAG_NOCLOSE);
conn->connection = c;
conn->service = ldapsrv_service;
conn->lp_ctx = ldapsrv_service->task->lp_ctx;
c->private_data = conn;
socket_address = socket_get_my_addr(c->socket, conn);
if (!socket_address) {
ldapsrv_terminate_connection(conn, "ldapsrv_accept: failed to obtain local socket address!");
return;
}
port = socket_address->port;
talloc_free(socket_address);
if (port == 3268 || port == 3269) /* Global catalog */ {
conn->global_catalog = true;
}
server_credentials = cli_credentials_init(conn);
if (!server_credentials) {
stream_terminate_connection(c, "Failed to init server credentials\n");
return;
}
cli_credentials_set_conf(server_credentials, conn->lp_ctx);
status = cli_credentials_set_machine_account(server_credentials, conn->lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
stream_terminate_connection(c, talloc_asprintf(conn, "Failed to obtain server credentials, perhaps a standalone server?: %s\n", nt_errstr(status)));
return;
}
conn->server_credentials = server_credentials;
conn->session_info = session_info;
if (!NT_STATUS_IS_OK(ldapsrv_backend_Init(conn))) {
ldapsrv_terminate_connection(conn, "backend Init failed");
return;
}
/* load limits from the conf partition */
ldapsrv_load_limits(conn); /* should we fail on error ? */
/* register the server */
irpc_add_name(c->msg_ctx, "ldap_server");
conn->sockets.active = conn->sockets.raw;
if (port != 636 && port != 3269) {
ldapsrv_call_read_next(conn);
return;
}
endtime = timeval_current_ofs(conn->limits.conn_idle_time, 0);
subreq = tstream_tls_accept_send(conn,
conn->connection->event.ctx,
conn->sockets.raw,
conn->service->tls_params);
if (subreq == NULL) {
ldapsrv_terminate_connection(conn, "ldapsrv_accept: "
"no memory for tstream_tls_accept_send");
return;
}
tevent_req_set_endtime(subreq,
conn->connection->event.ctx,
endtime);
tevent_req_set_callback(subreq, ldapsrv_accept_tls_done, conn);
}
static NTSTATUS remote_op_bind(struct dcesrv_call_state *dce_call, const struct dcesrv_interface *iface, uint32_t if_version)
{
NTSTATUS status;
const struct ndr_interface_table *table;
struct dcesrv_remote_private *priv;
const char *binding = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "dcerpc_remote", "binding");
const char *user, *pass, *domain;
struct cli_credentials *credentials;
bool must_free_credentials = true;
bool machine_account;
struct dcerpc_binding *b;
struct composite_context *pipe_conn_req;
machine_account = lpcfg_parm_bool(dce_call->conn->dce_ctx->lp_ctx, NULL, "dcerpc_remote", "use_machine_account", false);
priv = talloc(dce_call->conn, struct dcesrv_remote_private);
if (!priv) {
return NT_STATUS_NO_MEMORY;
}
priv->c_pipe = NULL;
dce_call->context->private_data = priv;
if (!binding) {
DEBUG(0,("You must specify a DCE/RPC binding string\n"));
return NT_STATUS_INVALID_PARAMETER;
}
user = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "dcerpc_remote", "user");
pass = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "dcerpc_remote", "password");
domain = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "dceprc_remote", "domain");
table = ndr_table_by_syntax(&iface->syntax_id);
if (!table) {
dce_call->fault_code = DCERPC_FAULT_UNK_IF;
return NT_STATUS_NET_WRITE_FAULT;
}
if (user && pass) {
DEBUG(5, ("dcerpc_remote: RPC Proxy: Using specified account\n"));
credentials = cli_credentials_init(priv);
if (!credentials) {
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(credentials, dce_call->conn->dce_ctx->lp_ctx);
cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
if (domain) {
cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
}
cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
} else if (machine_account) {
DEBUG(5, ("dcerpc_remote: RPC Proxy: Using machine account\n"));
credentials = cli_credentials_init(priv);
cli_credentials_set_conf(credentials, dce_call->conn->dce_ctx->lp_ctx);
if (domain) {
cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
}
status = cli_credentials_set_machine_account(credentials, dce_call->conn->dce_ctx->lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
} else if (dce_call->conn->auth_state.session_info->credentials) {
DEBUG(5, ("dcerpc_remote: RPC Proxy: Using delegated credentials\n"));
credentials = dce_call->conn->auth_state.session_info->credentials;
must_free_credentials = false;
} else {
DEBUG(1,("dcerpc_remote: RPC Proxy: You must supply binding, user and password or have delegated credentials\n"));
return NT_STATUS_INVALID_PARAMETER;
}
/* parse binding string to the structure */
status = dcerpc_parse_binding(dce_call->context, binding, &b);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to parse dcerpc binding '%s'\n", binding));
return status;
}
/* If we already have a remote association group ID, then use that */
if (dce_call->context->assoc_group->proxied_id != 0) {
status = dcerpc_binding_set_assoc_group_id(b,
dce_call->context->assoc_group->proxied_id);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("dcerpc_binding_set_assoc_group_id() - %s'\n",
nt_errstr(status)));
return status;
}
}
status = dcerpc_binding_set_abstract_syntax(b, &iface->syntax_id);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("dcerpc_binding_set_abstract_syntax() - %s'\n",
nt_errstr(status)));
return status;
}
DEBUG(3, ("Using binding %s\n", dcerpc_binding_string(dce_call->context, b)));
pipe_conn_req = dcerpc_pipe_connect_b_send(dce_call->context, b, table,
credentials, dce_call->event_ctx, dce_call->conn->dce_ctx->lp_ctx);
status = dcerpc_pipe_connect_b_recv(pipe_conn_req, dce_call->context, &(priv->c_pipe));
if (must_free_credentials) {
talloc_free(credentials);
}
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (dce_call->context->assoc_group->proxied_id == 0) {
dce_call->context->assoc_group->proxied_id =
dcerpc_binding_get_assoc_group_id(priv->c_pipe->binding);
}
if (!NT_STATUS_IS_OK(status)) {
return status;
}
return NT_STATUS_OK;
}
/* Hook to allow GENSEC to handle blob-based authentication
* mechanisms, without directly linking the mechansim code */
static NTSTATUS prepare_gensec(TALLOC_CTX *mem_ctx,
struct gensec_security **gensec_context)
{
NTSTATUS status;
struct loadparm_context *lp_ctx;
struct tevent_context *event_ctx;
TALLOC_CTX *frame = talloc_stackframe();
struct gensec_security *gensec_ctx;
struct imessaging_context *msg_ctx;
struct cli_credentials *server_credentials;
lp_ctx = loadparm_init_s3(frame, loadparm_s3_context());
if (lp_ctx == NULL) {
DEBUG(1, ("loadparm_init_s3 failed\n"));
TALLOC_FREE(frame);
return NT_STATUS_INVALID_SERVER_STATE;
}
event_ctx = s4_event_context_init(frame);
if (event_ctx == NULL) {
DEBUG(1, ("s4_event_context_init failed\n"));
TALLOC_FREE(frame);
return NT_STATUS_INVALID_SERVER_STATE;
}
msg_ctx = imessaging_client_init(frame,
lp_ctx,
event_ctx);
if (msg_ctx == NULL) {
DEBUG(1, ("imessaging_init failed\n"));
TALLOC_FREE(frame);
return NT_STATUS_INVALID_SERVER_STATE;
}
server_credentials
= cli_credentials_init(frame);
if (!server_credentials) {
DEBUG(1, ("Failed to init server credentials"));
TALLOC_FREE(frame);
return NT_STATUS_INVALID_SERVER_STATE;
}
cli_credentials_set_conf(server_credentials, lp_ctx);
status = cli_credentials_set_machine_account(server_credentials, lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("Failed to obtain server credentials, perhaps a standalone server?: %s\n", nt_errstr(status)));
talloc_free(server_credentials);
server_credentials = NULL;
}
status = samba_server_gensec_start(mem_ctx,
event_ctx, msg_ctx,
lp_ctx, server_credentials, "cifs",
&gensec_ctx);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to start GENSEC server code: %s\n", nt_errstr(status)));
TALLOC_FREE(frame);
return status;
}
talloc_reparent(frame, gensec_ctx, msg_ctx);
talloc_reparent(frame, gensec_ctx, event_ctx);
talloc_reparent(frame, gensec_ctx, lp_ctx);
talloc_reparent(frame, gensec_ctx, server_credentials);
gensec_want_feature(gensec_ctx, GENSEC_FEATURE_SESSION_KEY);
gensec_want_feature(gensec_ctx, GENSEC_FEATURE_UNIX_TOKEN);
*gensec_context = gensec_ctx;
TALLOC_FREE(frame);
return status;
}
/*
connect to a share - used when a tree_connect operation comes in.
*/
static NTSTATUS cvfs_connect(struct ntvfs_module_context *ntvfs,
struct ntvfs_request *req,
union smb_tcon* tcon)
{
NTSTATUS status;
struct cvfs_private *p;
const char *host, *user, *pass, *domain, *remote_share, *sharename;
struct share_config *scfg = ntvfs->ctx->config;
struct smb2_tree *tree;
struct cli_credentials *credentials;
bool machine_account;
struct smbcli_options options;
switch (tcon->generic.level) {
case RAW_TCON_TCON:
sharename = tcon->tcon.in.service;
break;
case RAW_TCON_TCONX:
sharename = tcon->tconx.in.path;
break;
case RAW_TCON_SMB2:
sharename = tcon->smb2.in.path;
break;
default:
return NT_STATUS_INVALID_LEVEL;
}
if (strncmp(sharename, "\\\\", 2) == 0) {
char *str = strchr(sharename+2, '\\');
if (str) {
sharename = str + 1;
}
}
/* Here we need to determine which server to connect to.
* For now we use parametric options, type cifs.
*/
host = share_string_option(scfg, SMB2_SERVER, NULL);
user = share_string_option(scfg, SMB2_USER, NULL);
pass = share_string_option(scfg, SMB2_PASSWORD, NULL);
domain = share_string_option(scfg, SMB2_DOMAIN, NULL);
remote_share = share_string_option(scfg, SMB2_SHARE, NULL);
if (!remote_share) {
remote_share = sharename;
}
machine_account = share_bool_option(scfg, SMB2_USE_MACHINE_ACCT, SMB2_USE_MACHINE_ACCT_DEFAULT);
p = talloc_zero(ntvfs, struct cvfs_private);
if (!p) {
return NT_STATUS_NO_MEMORY;
}
ntvfs->private_data = p;
if (!host) {
DEBUG(1,("CIFS backend: You must supply server\n"));
return NT_STATUS_INVALID_PARAMETER;
}
if (user && pass) {
DEBUG(5, ("CIFS backend: Using specified password\n"));
credentials = cli_credentials_init(p);
if (!credentials) {
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
cli_credentials_set_username(credentials, user, CRED_SPECIFIED);
if (domain) {
cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
}
cli_credentials_set_password(credentials, pass, CRED_SPECIFIED);
} else if (machine_account) {
DEBUG(5, ("CIFS backend: Using machine account\n"));
credentials = cli_credentials_init(p);
cli_credentials_set_conf(credentials, ntvfs->ctx->lp_ctx);
if (domain) {
cli_credentials_set_domain(credentials, domain, CRED_SPECIFIED);
}
status = cli_credentials_set_machine_account(credentials, ntvfs->ctx->lp_ctx);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
} else if (req->session_info->credentials) {
DEBUG(5, ("CIFS backend: Using delegated credentials\n"));
credentials = req->session_info->credentials;
} else {
DEBUG(1,("CIFS backend: NO delegated credentials found: You must supply server, user and password or the client must supply delegated credentials\n"));
return NT_STATUS_INVALID_PARAMETER;
}
lpcfg_smbcli_options(ntvfs->ctx->lp_ctx, &options);
status = smb2_connect(p, host,
lpcfg_parm_string_list(p, ntvfs->ctx->lp_ctx, NULL, "smb2", "ports", NULL),
remote_share,
lpcfg_resolve_context(ntvfs->ctx->lp_ctx),
credentials,
&tree,
ntvfs->ctx->event_ctx, &options,
lpcfg_socket_options(ntvfs->ctx->lp_ctx),
lpcfg_gensec_settings(p, ntvfs->ctx->lp_ctx));
NT_STATUS_NOT_OK_RETURN(status);
status = smb2_get_roothandle(tree, &p->roothandle);
NT_STATUS_NOT_OK_RETURN(status);
p->tree = tree;
p->transport = p->tree->session->transport;
p->ntvfs = ntvfs;
ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
if (tcon->generic.level == RAW_TCON_TCONX) {
tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
}
/* we need to receive oplock break requests from the server */
/* TODO: enable oplocks
smbcli_oplock_handler(p->transport, oplock_handler, p);
*/
return NT_STATUS_OK;
}
