NTSTATUS auth_generic_server_get_user_info(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
struct auth_session_info **session_info)
{
NTSTATUS status;
status = gensec_session_info(gensec_security, mem_ctx, session_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, (__location__ ": Failed to get authenticated user "
"info: %s\n", nt_errstr(status)));
return status;
}
DEBUG(5, (__location__ "OK: user: %s domain: %s\n",
(*session_info)->info->account_name,
(*session_info)->info->domain_name));
return NT_STATUS_OK;
}
/*
add any auth information needed in a alter ack, and process the authentication
information found in the alter.
*/
NTSTATUS dcesrv_auth_alter_ack(struct dcesrv_call_state *call, struct ncacn_packet *pkt)
{
struct dcesrv_connection *dce_conn = call->conn;
NTSTATUS status;
/* on a pure interface change there is no auth_info structure
setup */
if (!call->conn->auth_state.auth_info ||
dce_conn->auth_state.auth_info->credentials.length == 0) {
return NT_STATUS_OK;
}
if (!call->conn->auth_state.gensec_security) {
return NT_STATUS_INVALID_PARAMETER;
}
status = gensec_update(dce_conn->auth_state.gensec_security,
call, call->event_ctx,
dce_conn->auth_state.auth_info->credentials,
&dce_conn->auth_state.auth_info->credentials);
if (NT_STATUS_IS_OK(status)) {
status = gensec_session_info(dce_conn->auth_state.gensec_security,
dce_conn,
&dce_conn->auth_state.session_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to establish session_info: %s\n", nt_errstr(status)));
return status;
}
/* Now that we are authenticated, got back to the generic session key... */
dce_conn->auth_state.session_key = dcesrv_generic_session_key;
return NT_STATUS_OK;
} else if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
dce_conn->auth_state.auth_info->auth_pad_length = 0;
dce_conn->auth_state.auth_info->auth_reserved = 0;
return NT_STATUS_OK;
}
DEBUG(4, ("GENSEC mech rejected the incoming authentication at auth alter_ack: %s\n",
nt_errstr(status)));
return status;
}
/*
process the final stage of a auth request
*/
bool dcesrv_auth_auth3(struct dcesrv_call_state *call)
{
struct ncacn_packet *pkt = &call->pkt;
struct dcesrv_connection *dce_conn = call->conn;
NTSTATUS status;
uint32_t auth_length;
/* We can't work without an existing gensec state, and an new blob to feed it */
if (!dce_conn->auth_state.auth_info ||
!dce_conn->auth_state.gensec_security ||
pkt->u.auth3.auth_info.length == 0) {
return false;
}
status = dcerpc_pull_auth_trailer(pkt, call, &pkt->u.auth3.auth_info,
dce_conn->auth_state.auth_info, &auth_length, true);
if (!NT_STATUS_IS_OK(status)) {
return false;
}
/* Pass the extra data we got from the client down to gensec for processing */
status = gensec_update(dce_conn->auth_state.gensec_security,
call, call->event_ctx,
dce_conn->auth_state.auth_info->credentials,
&dce_conn->auth_state.auth_info->credentials);
if (NT_STATUS_IS_OK(status)) {
status = gensec_session_info(dce_conn->auth_state.gensec_security,
dce_conn,
&dce_conn->auth_state.session_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to establish session_info: %s\n", nt_errstr(status)));
return false;
}
/* Now that we are authenticated, go back to the generic session key... */
dce_conn->auth_state.session_key = dcesrv_generic_session_key;
return true;
} else {
DEBUG(4, ("GENSEC mech rejected the incoming authentication at bind_auth3: %s\n",
nt_errstr(status)));
return false;
}
}
/*
add any auth information needed in a bind ack, and process the authentication
information found in the bind.
*/
NTSTATUS dcesrv_auth_bind_ack(struct dcesrv_call_state *call, struct ncacn_packet *pkt)
{
struct dcesrv_connection *dce_conn = call->conn;
NTSTATUS status;
if (!call->conn->auth_state.gensec_security) {
return NT_STATUS_OK;
}
status = gensec_update(dce_conn->auth_state.gensec_security,
call,
dce_conn->auth_state.auth_info->credentials,
&dce_conn->auth_state.auth_info->credentials);
if (NT_STATUS_IS_OK(status)) {
status = gensec_session_info(dce_conn->auth_state.gensec_security,
&dce_conn->auth_state.session_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to establish session_info: %s\n", nt_errstr(status)));
return status;
}
if (dce_conn->state_flags & DCESRV_CALL_STATE_FLAG_HEADER_SIGNING) {
gensec_want_feature(dce_conn->auth_state.gensec_security,
GENSEC_FEATURE_SIGN_PKT_HEADER);
}
/* Now that we are authenticated, go back to the generic session key... */
dce_conn->auth_state.session_key = dcesrv_generic_session_key;
return NT_STATUS_OK;
} else if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
dce_conn->auth_state.auth_info->auth_pad_length = 0;
dce_conn->auth_state.auth_info->auth_reserved = 0;
return NT_STATUS_OK;
} else {
DEBUG(4, ("GENSEC mech rejected the incoming authentication at bind_ack: %s\n",
nt_errstr(status)));
return status;
}
}
NTSTATUS auth_generic_server_get_user_info(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
struct auth_session_info **session_info)
{
NTSTATUS status;
/* this has to be done as root in order to get to the
* messaging sockets for IDMAP and privilege.ldb in the AD
* DC */
become_root();
status = gensec_session_info(gensec_security, mem_ctx, session_info);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, (__location__ ": Failed to get authenticated user "
"info: %s\n", nt_errstr(status)));
return status;
}
DEBUG(5, (__location__ "OK: user: %s domain: %s\n",
(*session_info)->info->account_name,
(*session_info)->info->domain_name));
return NT_STATUS_OK;
}
static void reply_sesssetup_and_X_spnego(struct smb_request *req)
{
const uint8_t *p;
DATA_BLOB in_blob;
DATA_BLOB out_blob = data_blob_null;
size_t bufrem;
char *tmp;
const char *native_os;
const char *native_lanman;
const char *primary_domain;
uint16_t data_blob_len = SVAL(req->vwv+7, 0);
enum remote_arch_types ra_type = get_remote_arch();
uint64_t vuid = req->vuid;
NTSTATUS status = NT_STATUS_OK;
struct smbXsrv_connection *xconn = req->xconn;
struct smbd_server_connection *sconn = req->sconn;
uint16_t action = 0;
bool is_authenticated = false;
NTTIME now = timeval_to_nttime(&req->request_time);
struct smbXsrv_session *session = NULL;
uint16_t smb_bufsize = SVAL(req->vwv+2, 0);
uint32_t client_caps = IVAL(req->vwv+10, 0);
struct smbXsrv_session_auth0 *auth;
DEBUG(3,("Doing spnego session setup\n"));
if (!xconn->smb1.sessions.done_sesssetup) {
global_client_caps = client_caps;
if (!(global_client_caps & CAP_STATUS32)) {
remove_from_common_flags2(FLAGS2_32_BIT_ERROR_CODES);
}
}
p = req->buf;
if (data_blob_len == 0) {
/* an invalid request */
reply_nterror(req, nt_status_squash(NT_STATUS_LOGON_FAILURE));
return;
}
bufrem = smbreq_bufrem(req, p);
/* pull the spnego blob */
in_blob = data_blob_const(p, MIN(bufrem, data_blob_len));
#if 0
file_save("negotiate.dat", in_blob.data, in_blob.length);
#endif
p = req->buf + in_blob.length;
p += srvstr_pull_req_talloc(talloc_tos(), req, &tmp, p,
STR_TERMINATE);
native_os = tmp ? tmp : "";
p += srvstr_pull_req_talloc(talloc_tos(), req, &tmp, p,
STR_TERMINATE);
native_lanman = tmp ? tmp : "";
p += srvstr_pull_req_talloc(talloc_tos(), req, &tmp, p,
STR_TERMINATE);
primary_domain = tmp ? tmp : "";
DEBUG(3,("NativeOS=[%s] NativeLanMan=[%s] PrimaryDomain=[%s]\n",
native_os, native_lanman, primary_domain));
if ( ra_type == RA_WIN2K ) {
/* Vista sets neither the OS or lanman strings */
if ( !strlen(native_os) && !strlen(native_lanman) )
set_remote_arch(RA_VISTA);
/* Windows 2003 doesn't set the native lanman string,
but does set primary domain which is a bug I think */
if ( !strlen(native_lanman) ) {
ra_lanman_string( primary_domain );
} else {
ra_lanman_string( native_lanman );
}
} else if ( ra_type == RA_VISTA ) {
if ( strncmp(native_os, "Mac OS X", 8) == 0 ) {
set_remote_arch(RA_OSX);
}
}
if (vuid != 0) {
status = smb1srv_session_lookup(xconn,
vuid, now,
&session);
if (NT_STATUS_EQUAL(status, NT_STATUS_USER_SESSION_DELETED)) {
reply_force_doserror(req, ERRSRV, ERRbaduid);
return;
}
if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED)) {
status = NT_STATUS_OK;
}
if (NT_STATUS_IS_OK(status)) {
session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
status = NT_STATUS_MORE_PROCESSING_REQUIRED;
TALLOC_FREE(session->pending_auth);
}
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
reply_nterror(req, nt_status_squash(status));
return;
}
}
if (session == NULL) {
/* create a new session */
status = smbXsrv_session_create(xconn,
now, &session);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, nt_status_squash(status));
return;
}
}
status = smbXsrv_session_find_auth(session, xconn, now, &auth);
if (!NT_STATUS_IS_OK(status)) {
status = smbXsrv_session_create_auth(session, xconn, now,
0, /* flags */
0, /* security */
&auth);
if (!NT_STATUS_IS_OK(status)) {
reply_nterror(req, nt_status_squash(status));
return;
}
}
if (auth->gensec == NULL) {
status = auth_generic_prepare(session,
xconn->remote_address,
xconn->local_address,
"SMB",
&auth->gensec);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(session);
reply_nterror(req, nt_status_squash(status));
return;
}
gensec_want_feature(auth->gensec, GENSEC_FEATURE_SESSION_KEY);
gensec_want_feature(auth->gensec, GENSEC_FEATURE_UNIX_TOKEN);
gensec_want_feature(auth->gensec, GENSEC_FEATURE_SMB_TRANSPORT);
status = gensec_start_mech_by_oid(auth->gensec,
GENSEC_OID_SPNEGO);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to start SPNEGO handler!\n"));
TALLOC_FREE(session);;
reply_nterror(req, nt_status_squash(status));
return;
}
}
become_root();
status = gensec_update(auth->gensec,
talloc_tos(),
in_blob, &out_blob);
unbecome_root();
if (!NT_STATUS_IS_OK(status) &&
!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
TALLOC_FREE(session);
reply_nterror(req, nt_status_squash(status));
return;
}
if (NT_STATUS_IS_OK(status) && session->global->auth_session_info == NULL) {
struct auth_session_info *session_info = NULL;
status = gensec_session_info(auth->gensec,
session,
&session_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1,("Failed to generate session_info "
"(user and group token) for session setup: %s\n",
nt_errstr(status)));
data_blob_free(&out_blob);
TALLOC_FREE(session);
reply_nterror(req, nt_status_squash(status));
return;
}
if (security_session_user_level(session_info, NULL) == SECURITY_GUEST) {
action |= SMB_SETUP_GUEST;
}
if (session_info->session_key.length > 0) {
struct smbXsrv_session *x = session;
/*
* Note: the SMB1 signing key is not truncated to 16 byte!
*/
x->global->signing_key =
data_blob_dup_talloc(x->global,
session_info->session_key);
if (x->global->signing_key.data == NULL) {
data_blob_free(&out_blob);
TALLOC_FREE(session);
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
/*
* clear the session key
* the first tcon will add setup the application key
*/
data_blob_clear_free(&session_info->session_key);
}
session->compat = talloc_zero(session, struct user_struct);
if (session->compat == NULL) {
data_blob_free(&out_blob);
TALLOC_FREE(session);
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
session->compat->session = session;
session->compat->homes_snum = -1;
session->compat->session_info = session_info;
session->compat->session_keystr = NULL;
session->compat->vuid = session->global->session_wire_id;
DLIST_ADD(sconn->users, session->compat);
sconn->num_users++;
if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
is_authenticated = true;
session->compat->homes_snum =
register_homes_share(session_info->unix_info->unix_name);
}
if (srv_is_signing_negotiated(xconn) &&
is_authenticated &&
session->global->signing_key.length > 0)
{
/*
* Try and turn on server signing on the first non-guest
* sessionsetup.
*/
srv_set_signing(xconn,
session->global->signing_key,
data_blob_null);
}
set_current_user_info(session_info->unix_info->sanitized_username,
session_info->unix_info->unix_name,
session_info->info->domain_name);
session->status = NT_STATUS_OK;
session->global->auth_session_info = talloc_move(session->global,
&session_info);
session->global->auth_session_info_seqnum += 1;
session->global->channels[0].auth_session_info_seqnum =
session->global->auth_session_info_seqnum;
session->global->auth_time = now;
if (client_caps & CAP_DYNAMIC_REAUTH) {
session->global->expiration_time =
gensec_expire_time(auth->gensec);
} else {
session->global->expiration_time =
GENSEC_EXPIRE_TIME_INFINITY;
}
if (!session_claim(session)) {
DEBUG(1, ("smb1: Failed to claim session for vuid=%llu\n",
(unsigned long long)session->compat->vuid));
data_blob_free(&out_blob);
TALLOC_FREE(session);
reply_nterror(req, NT_STATUS_LOGON_FAILURE);
return;
}
status = smbXsrv_session_update(session);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("smb1: Failed to update session for vuid=%llu - %s\n",
(unsigned long long)session->compat->vuid,
nt_errstr(status)));
data_blob_free(&out_blob);
TALLOC_FREE(session);
reply_nterror(req, NT_STATUS_LOGON_FAILURE);
return;
}
if (!xconn->smb1.sessions.done_sesssetup) {
if (smb_bufsize < SMB_BUFFER_SIZE_MIN) {
reply_force_doserror(req, ERRSRV, ERRerror);
return;
}
xconn->smb1.sessions.max_send = smb_bufsize;
xconn->smb1.sessions.done_sesssetup = true;
}
/* current_user_info is changed on new vuid */
reload_services(sconn, conn_snum_used, true);
} else if (NT_STATUS_IS_OK(status)) {
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;
}
/*
add any auth information needed in a bind ack, and process the authentication
information found in the bind.
*/
NTSTATUS dcesrv_auth_bind_ack(struct dcesrv_call_state *call, struct ncacn_packet *pkt)
{
struct dcesrv_connection *dce_conn = call->conn;
NTSTATUS status;
bool want_header_signing = false;
if (!call->conn->auth_state.gensec_security) {
return NT_STATUS_OK;
}
if (call->pkt.pfc_flags & DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN) {
dce_conn->auth_state.client_hdr_signing = true;
want_header_signing = true;
}
if (!lpcfg_parm_bool(call->conn->dce_ctx->lp_ctx, NULL, "dcesrv","header signing", true)) {
want_header_signing = false;
}
status = gensec_update(dce_conn->auth_state.gensec_security,
call, call->event_ctx,
dce_conn->auth_state.auth_info->credentials,
&dce_conn->auth_state.auth_info->credentials);
if (NT_STATUS_IS_OK(status)) {
status = gensec_session_info(dce_conn->auth_state.gensec_security,
dce_conn,
&dce_conn->auth_state.session_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Failed to establish session_info: %s\n", nt_errstr(status)));
return status;
}
if (!gensec_have_feature(dce_conn->auth_state.gensec_security,
GENSEC_FEATURE_SIGN_PKT_HEADER))
{
want_header_signing = false;
}
if (want_header_signing) {
gensec_want_feature(dce_conn->auth_state.gensec_security,
GENSEC_FEATURE_SIGN_PKT_HEADER);
dce_conn->auth_state.hdr_signing = true;
pkt->pfc_flags |= DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN;
}
/* Now that we are authenticated, go back to the generic session key... */
dce_conn->auth_state.session_key = dcesrv_generic_session_key;
return NT_STATUS_OK;
} else if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
dce_conn->auth_state.auth_info->auth_pad_length = 0;
dce_conn->auth_state.auth_info->auth_reserved = 0;
if (!gensec_have_feature(dce_conn->auth_state.gensec_security,
GENSEC_FEATURE_SIGN_PKT_HEADER))
{
want_header_signing = false;
}
if (want_header_signing) {
gensec_want_feature(dce_conn->auth_state.gensec_security,
GENSEC_FEATURE_SIGN_PKT_HEADER);
dce_conn->auth_state.hdr_signing = true;
pkt->pfc_flags |= DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN;
}
return NT_STATUS_OK;
} else {
DEBUG(4, ("GENSEC mech rejected the incoming authentication at bind_ack: %s\n",
nt_errstr(status)));
return status;
}
}
static bool kpasswd_process_request(struct kdc_server *kdc,
TALLOC_CTX *mem_ctx,
struct gensec_security *gensec_security,
uint16_t version,
DATA_BLOB *input,
DATA_BLOB *reply)
{
struct auth_session_info *session_info;
size_t pw_len;
if (!NT_STATUS_IS_OK(gensec_session_info(gensec_security,
&session_info))) {
return kpasswdd_make_error_reply(kdc, mem_ctx,
KRB5_KPASSWD_HARDERROR,
"gensec_session_info failed!",
reply);
}
switch (version) {
case KRB5_KPASSWD_VERS_CHANGEPW:
{
DATA_BLOB password;
if (!convert_string_talloc_convenience(mem_ctx, lp_iconv_convenience(kdc->task->lp_ctx),
CH_UTF8, CH_UTF16,
(const char *)input->data,
input->length,
(void **)&password.data, &pw_len, false)) {
return false;
}
password.length = pw_len;
return kpasswdd_change_password(kdc, mem_ctx, session_info,
&password, reply);
break;
}
case KRB5_KPASSWD_VERS_SETPW:
{
NTSTATUS status;
enum samPwdChangeReason reject_reason = SAM_PWD_CHANGE_NO_ERROR;
struct samr_DomInfo1 *dominfo = NULL;
struct ldb_context *samdb;
struct ldb_message *msg;
krb5_context context = kdc->smb_krb5_context->krb5_context;
ChangePasswdDataMS chpw;
DATA_BLOB password;
krb5_principal principal;
char *set_password_on_princ;
struct ldb_dn *set_password_on_dn;
size_t len;
int ret;
msg = ldb_msg_new(mem_ctx);
if (!msg) {
return false;
}
ret = decode_ChangePasswdDataMS(input->data, input->length,
&chpw, &len);
if (ret) {
return kpasswdd_make_error_reply(kdc, mem_ctx,
KRB5_KPASSWD_MALFORMED,
"failed to decode password change structure",
reply);
}
if (!convert_string_talloc_convenience(mem_ctx, lp_iconv_convenience(kdc->task->lp_ctx),
CH_UTF8, CH_UTF16,
(const char *)chpw.newpasswd.data,
chpw.newpasswd.length,
(void **)&password.data, &pw_len, false)) {
free_ChangePasswdDataMS(&chpw);
return false;
}
password.length = pw_len;
if ((chpw.targname && !chpw.targrealm)
|| (!chpw.targname && chpw.targrealm)) {
return kpasswdd_make_error_reply(kdc, mem_ctx,
KRB5_KPASSWD_MALFORMED,
"Realm and principal must be both present, or neither present",
reply);
}
if (chpw.targname && chpw.targrealm) {
#ifdef SAMBA4_INTERNAL_HEIMDAL
if (_krb5_principalname2krb5_principal(kdc->smb_krb5_context->krb5_context,
&principal, *chpw.targname,
*chpw.targrealm) != 0) {
free_ChangePasswdDataMS(&chpw);
return kpasswdd_make_error_reply(kdc, mem_ctx,
KRB5_KPASSWD_MALFORMED,
"failed to extract principal to set",
reply);
}
#else /* SAMBA4_INTERNAL_HEIMDAL */
return kpasswdd_make_error_reply(kdc, mem_ctx,
KRB5_KPASSWD_BAD_VERSION,
"Operation Not Implemented",
reply);
#endif /* SAMBA4_INTERNAL_HEIMDAL */
} else {
free_ChangePasswdDataMS(&chpw);
return kpasswdd_change_password(kdc, mem_ctx, session_info,
&password, reply);
}
free_ChangePasswdDataMS(&chpw);
if (krb5_unparse_name(context, principal, &set_password_on_princ) != 0) {
krb5_free_principal(context, principal);
return kpasswdd_make_error_reply(kdc, mem_ctx,
KRB5_KPASSWD_MALFORMED,
"krb5_unparse_name failed!",
reply);
}
krb5_free_principal(context, principal);
samdb = samdb_connect(mem_ctx, kdc->task->event_ctx, kdc->task->lp_ctx, session_info);
if (!samdb) {
return kpasswdd_make_error_reply(kdc, mem_ctx,
KRB5_KPASSWD_HARDERROR,
"Unable to open database!",
reply);
}
DEBUG(3, ("%s\\%s (%s) is changing password of %s\n",
session_info->server_info->domain_name,
session_info->server_info->account_name,
dom_sid_string(mem_ctx, session_info->security_token->user_sid),
set_password_on_princ));
ret = ldb_transaction_start(samdb);
if (ret) {
status = NT_STATUS_TRANSACTION_ABORTED;
return kpasswd_make_pwchange_reply(kdc, mem_ctx,
status,
SAM_PWD_CHANGE_NO_ERROR,
NULL,
reply);
}
status = crack_user_principal_name(samdb, mem_ctx,
set_password_on_princ,
&set_password_on_dn, NULL);
free(set_password_on_princ);
if (!NT_STATUS_IS_OK(status)) {
ldb_transaction_cancel(samdb);
return kpasswd_make_pwchange_reply(kdc, mem_ctx,
status,
SAM_PWD_CHANGE_NO_ERROR,
NULL,
reply);
}
msg = ldb_msg_new(mem_ctx);
if (msg == NULL) {
ldb_transaction_cancel(samdb);
status = NT_STATUS_NO_MEMORY;
} else {
msg->dn = ldb_dn_copy(msg, set_password_on_dn);
if (!msg->dn) {
status = NT_STATUS_NO_MEMORY;
}
}
if (NT_STATUS_IS_OK(status)) {
/* Admin password set */
status = samdb_set_password(samdb, mem_ctx,
set_password_on_dn, NULL,
msg, &password, NULL, NULL,
false, /* this is not a user password change */
&reject_reason, &dominfo);
}
if (NT_STATUS_IS_OK(status)) {
/* modify the samdb record */
ret = samdb_replace(samdb, mem_ctx, msg);
if (ret != 0) {
DEBUG(2,("Failed to modify record to set password on %s: %s\n",
ldb_dn_get_linearized(msg->dn),
ldb_errstring(samdb)));
status = NT_STATUS_ACCESS_DENIED;
}
}
if (NT_STATUS_IS_OK(status)) {
ret = ldb_transaction_commit(samdb);
if (ret != 0) {
DEBUG(1,("Failed to commit transaction to set password on %s: %s\n",
ldb_dn_get_linearized(msg->dn),
ldb_errstring(samdb)));
status = NT_STATUS_TRANSACTION_ABORTED;
}
} else {
ldb_transaction_cancel(samdb);
}
return kpasswd_make_pwchange_reply(kdc, mem_ctx,
status,
reject_reason,
dominfo,
reply);
}
default:
return kpasswdd_make_error_reply(kdc, mem_ctx,
KRB5_KPASSWD_BAD_VERSION,
talloc_asprintf(mem_ctx,
"Protocol version %u not supported",
version),
reply);
}
return true;
}
static NTSTATUS smbd_smb2_auth_generic(struct smbd_smb2_session *session,
struct smbd_smb2_request *smb2req,
uint8_t in_security_mode,
DATA_BLOB in_security_buffer,
uint16_t *out_session_flags,
DATA_BLOB *out_security_buffer,
uint64_t *out_session_id)
{
NTSTATUS status;
*out_security_buffer = data_blob_null;
if (session->gensec_security == NULL) {
status = auth_generic_prepare(session, session->sconn->remote_address,
&session->gensec_security);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(session);
return status;
}
gensec_want_feature(session->gensec_security, GENSEC_FEATURE_SESSION_KEY);
gensec_want_feature(session->gensec_security, GENSEC_FEATURE_UNIX_TOKEN);
status = gensec_start_mech_by_oid(session->gensec_security, GENSEC_OID_SPNEGO);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(session);
return status;
}
}
become_root();
status = gensec_update(session->gensec_security,
smb2req, NULL,
in_security_buffer,
out_security_buffer);
unbecome_root();
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) &&
!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(session);
return nt_status_squash(status);
}
if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
*out_session_id = session->vuid;
return status;
}
status = gensec_session_info(session->gensec_security,
session,
&session->session_info);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(session);
return status;
}
*out_session_id = session->vuid;
return smbd_smb2_auth_generic_return(session,
smb2req,
in_security_mode,
in_security_buffer,
out_session_flags,
out_session_id);
}
/*
* Given the username/password, do a kinit, store the ticket in
* cache_name if specified, and return the PAC_LOGON_INFO (the
* structure containing the important user information such as
* groups).
*/
NTSTATUS kerberos_return_pac(TALLOC_CTX *mem_ctx,
const char *name,
const char *pass,
time_t time_offset,
time_t *expire_time,
time_t *renew_till_time,
const char *cache_name,
bool request_pac,
bool add_netbios_addr,
time_t renewable_time,
const char *impersonate_princ_s,
struct PAC_LOGON_INFO **_logon_info)
{
krb5_error_code ret;
NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
DATA_BLOB tkt, tkt_wrapped, ap_rep, sesskey1;
const char *auth_princ = NULL;
const char *local_service = NULL;
const char *cc = "MEMORY:kerberos_return_pac";
struct auth_session_info *session_info;
struct gensec_security *gensec_server_context;
struct gensec_settings *gensec_settings;
size_t idx = 0;
struct auth4_context *auth_context;
struct loadparm_context *lp_ctx;
struct PAC_LOGON_INFO *logon_info = NULL;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
ZERO_STRUCT(tkt);
ZERO_STRUCT(ap_rep);
ZERO_STRUCT(sesskey1);
if (!name || !pass) {
return NT_STATUS_INVALID_PARAMETER;
}
if (cache_name) {
cc = cache_name;
}
if (!strchr_m(name, '@')) {
auth_princ = talloc_asprintf(mem_ctx, "%s@%s", name,
lp_realm());
} else {
auth_princ = name;
}
NT_STATUS_HAVE_NO_MEMORY(auth_princ);
local_service = talloc_asprintf(mem_ctx, "%s$@%s",
lp_netbios_name(), lp_realm());
NT_STATUS_HAVE_NO_MEMORY(local_service);
ret = kerberos_kinit_password_ext(auth_princ,
pass,
time_offset,
expire_time,
renew_till_time,
cc,
request_pac,
add_netbios_addr,
renewable_time,
&status);
if (ret) {
DEBUG(1,("kinit failed for '%s' with: %s (%d)\n",
auth_princ, error_message(ret), ret));
/* status already set */
goto out;
}
DEBUG(10,("got TGT for %s in %s\n", auth_princ, cc));
if (expire_time) {
DEBUGADD(10,("\tvalid until: %s (%d)\n",
http_timestring(talloc_tos(), *expire_time),
(int)*expire_time));
}
if (renew_till_time) {
DEBUGADD(10,("\trenewable till: %s (%d)\n",
http_timestring(talloc_tos(), *renew_till_time),
(int)*renew_till_time));
}
/* we cannot continue with krb5 when UF_DONT_REQUIRE_PREAUTH is set,
* in that case fallback to NTLM - gd */
if (expire_time && renew_till_time &&
(*expire_time == 0) && (*renew_till_time == 0)) {
return NT_STATUS_INVALID_LOGON_TYPE;
}
ret = cli_krb5_get_ticket(mem_ctx,
local_service,
time_offset,
&tkt,
&sesskey1,
0,
cc,
NULL,
impersonate_princ_s);
if (ret) {
DEBUG(1,("failed to get ticket for %s: %s\n",
local_service, error_message(ret)));
if (impersonate_princ_s) {
DEBUGADD(1,("tried S4U2SELF impersonation as: %s\n",
impersonate_princ_s));
}
status = krb5_to_nt_status(ret);
goto out;
}
/* wrap that up in a nice GSS-API wrapping */
tkt_wrapped = spnego_gen_krb5_wrap(tmp_ctx, tkt, TOK_ID_KRB_AP_REQ);
if (tkt_wrapped.data == NULL) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
auth_context = talloc_zero(tmp_ctx, struct auth4_context);
if (auth_context == NULL) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
auth_context->generate_session_info_pac = kerberos_fetch_pac;
lp_ctx = loadparm_init_s3(tmp_ctx, loadparm_s3_context());
if (lp_ctx == NULL) {
status = NT_STATUS_INVALID_SERVER_STATE;
DEBUG(10, ("loadparm_init_s3 failed\n"));
goto out;
}
gensec_settings = lpcfg_gensec_settings(tmp_ctx, lp_ctx);
if (lp_ctx == NULL) {
status = NT_STATUS_NO_MEMORY;
DEBUG(10, ("lpcfg_gensec_settings failed\n"));
goto out;
}
gensec_settings->backends = talloc_zero_array(gensec_settings,
struct gensec_security_ops *, 2);
if (gensec_settings->backends == NULL) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
gensec_init();
gensec_settings->backends[idx++] = &gensec_gse_krb5_security_ops;
status = gensec_server_start(tmp_ctx, gensec_settings,
auth_context, &gensec_server_context);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, (__location__ "Failed to start server-side GENSEC to validate a Kerberos ticket: %s\n", nt_errstr(status)));
goto out;
}
talloc_unlink(tmp_ctx, lp_ctx);
talloc_unlink(tmp_ctx, gensec_settings);
talloc_unlink(tmp_ctx, auth_context);
status = gensec_start_mech_by_oid(gensec_server_context, GENSEC_OID_KERBEROS5);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, (__location__ "Failed to start server-side GENSEC krb5 to validate a Kerberos ticket: %s\n", nt_errstr(status)));
goto out;
}
/* Do a client-server update dance */
status = gensec_update(gensec_server_context, tmp_ctx, NULL, tkt_wrapped, &ap_rep);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("gensec_update() failed: %s\n", nt_errstr(status)));
goto out;
}
/* Now return the PAC information to the callers. We ingore
* the session_info and instead pick out the PAC via the
* private_data on the auth_context */
status = gensec_session_info(gensec_server_context, tmp_ctx, &session_info);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Unable to obtain PAC via gensec_session_info\n"));
goto out;
}
logon_info = talloc_get_type_abort(gensec_server_context->auth_context->private_data,
struct PAC_LOGON_INFO);
if (logon_info == NULL) {
DEBUG(1,("no PAC\n"));
status = NT_STATUS_INVALID_PARAMETER;
goto out;
}
*_logon_info = talloc_move(mem_ctx, &logon_info);
out:
talloc_free(tmp_ctx);
if (cc != cache_name) {
ads_kdestroy(cc);
}
data_blob_free(&tkt);
data_blob_free(&ap_rep);
data_blob_free(&sesskey1);
return status;
}
/*
authorize a zone update
*/
_PUBLIC_ isc_boolean_t dlz_ssumatch(const char *signer, const char *name, const char *tcpaddr,
const char *type, const char *key, uint32_t keydatalen, uint8_t *keydata,
void *dbdata)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
TALLOC_CTX *tmp_ctx;
DATA_BLOB ap_req;
struct cli_credentials *server_credentials;
char *keytab_name;
int ret;
int ldb_ret;
NTSTATUS nt_status;
struct gensec_security *gensec_ctx;
struct auth_session_info *session_info;
struct ldb_dn *dn;
isc_result_t result;
struct ldb_result *res;
const char * attrs[] = { NULL };
uint32_t access_mask;
/* Remove cached credentials, if any */
if (state->session_info) {
talloc_free(state->session_info);
state->session_info = NULL;
}
if (state->update_name) {
talloc_free(state->update_name);
state->update_name = NULL;
}
tmp_ctx = talloc_new(NULL);
if (tmp_ctx == NULL) {
state->log(ISC_LOG_ERROR, "samba_dlz: no memory");
return ISC_FALSE;
}
ap_req = data_blob_const(keydata, keydatalen);
server_credentials = cli_credentials_init(tmp_ctx);
if (!server_credentials) {
state->log(ISC_LOG_ERROR, "samba_dlz: failed to init server credentials");
talloc_free(tmp_ctx);
return ISC_FALSE;
}
cli_credentials_set_krb5_context(server_credentials, state->smb_krb5_ctx);
cli_credentials_set_conf(server_credentials, state->lp);
keytab_name = talloc_asprintf(tmp_ctx, "file:%s/dns.keytab",
lpcfg_private_dir(state->lp));
ret = cli_credentials_set_keytab_name(server_credentials, state->lp, keytab_name,
CRED_SPECIFIED);
if (ret != 0) {
state->log(ISC_LOG_ERROR, "samba_dlz: failed to obtain server credentials from %s",
keytab_name);
talloc_free(tmp_ctx);
return ISC_FALSE;
}
talloc_free(keytab_name);
nt_status = gensec_server_start(tmp_ctx,
lpcfg_gensec_settings(tmp_ctx, state->lp),
state->auth_context, &gensec_ctx);
if (!NT_STATUS_IS_OK(nt_status)) {
state->log(ISC_LOG_ERROR, "samba_dlz: failed to start gensec server");
talloc_free(tmp_ctx);
return ISC_FALSE;
}
gensec_set_credentials(gensec_ctx, server_credentials);
nt_status = gensec_start_mech_by_name(gensec_ctx, "spnego");
if (!NT_STATUS_IS_OK(nt_status)) {
state->log(ISC_LOG_ERROR, "samba_dlz: failed to start spnego");
talloc_free(tmp_ctx);
return ISC_FALSE;
}
nt_status = gensec_update(gensec_ctx, tmp_ctx, state->ev_ctx, ap_req, &ap_req);
if (!NT_STATUS_IS_OK(nt_status)) {
state->log(ISC_LOG_ERROR, "samba_dlz: spnego update failed");
talloc_free(tmp_ctx);
return ISC_FALSE;
}
nt_status = gensec_session_info(gensec_ctx, tmp_ctx, &session_info);
if (!NT_STATUS_IS_OK(nt_status)) {
state->log(ISC_LOG_ERROR, "samba_dlz: failed to create session info");
talloc_free(tmp_ctx);
return ISC_FALSE;
}
/* Get the DN from name */
result = b9_find_name_dn(state, name, tmp_ctx, &dn);
if (result != ISC_R_SUCCESS) {
state->log(ISC_LOG_ERROR, "samba_dlz: failed to find name %s", name);
talloc_free(tmp_ctx);
return ISC_FALSE;
}
/* make sure the dn exists, or find parent dn in case new object is being added */
ldb_ret = ldb_search(state->samdb, tmp_ctx, &res, dn, LDB_SCOPE_BASE,
attrs, "objectClass=dnsNode");
if (ldb_ret == LDB_ERR_NO_SUCH_OBJECT) {
ldb_dn_remove_child_components(dn, 1);
access_mask = SEC_ADS_CREATE_CHILD;
talloc_free(res);
} else if (ldb_ret == LDB_SUCCESS) {
access_mask = SEC_STD_REQUIRED | SEC_ADS_SELF_WRITE;
talloc_free(res);
} else {
talloc_free(tmp_ctx);
return ISC_FALSE;
}
/* Do ACL check */
ldb_ret = dsdb_check_access_on_dn(state->samdb, tmp_ctx, dn,
session_info->security_token,
access_mask, NULL);
if (ldb_ret != LDB_SUCCESS) {
state->log(ISC_LOG_INFO,
"samba_dlz: disallowing update of signer=%s name=%s type=%s error=%s",
signer, name, type, ldb_strerror(ldb_ret));
talloc_free(tmp_ctx);
return ISC_FALSE;
}
/* Cache session_info, so it can be used in the actual add/delete operation */
state->update_name = talloc_strdup(state, name);
if (state->update_name == NULL) {
state->log(ISC_LOG_ERROR, "samba_dlz: memory allocation error");
talloc_free(tmp_ctx);
return ISC_FALSE;
}
state->session_info = talloc_steal(state, session_info);
state->log(ISC_LOG_INFO, "samba_dlz: allowing update of signer=%s name=%s tcpaddr=%s type=%s key=%s",
signer, name, tcpaddr, type, key);
talloc_free(tmp_ctx);
return ISC_TRUE;
}
static bool test_PACVerify(struct torture_context *tctx,
struct dcerpc_pipe *p,
struct cli_credentials *credentials)
{
NTSTATUS status;
struct netr_LogonSamLogon r;
union netr_LogonLevel logon;
union netr_Validation validation;
uint8_t authoritative;
struct netr_Authenticator return_authenticator;
struct netr_GenericInfo generic;
struct netr_Authenticator auth, auth2;
struct netlogon_creds_CredentialState *creds;
struct gensec_security *gensec_client_context;
struct gensec_security *gensec_server_context;
DATA_BLOB client_to_server, server_to_client, pac_wrapped, payload;
struct PAC_Validate pac_wrapped_struct;
enum ndr_err_code ndr_err;
struct auth_session_info *session_info;
char *tmp_dir;
TALLOC_CTX *tmp_ctx = talloc_new(tctx);
torture_assert(tctx, tmp_ctx != NULL, "talloc_new() failed");
if (!test_SetupCredentials2(p, tctx, NETLOGON_NEG_AUTH2_ADS_FLAGS,
credentials, SEC_CHAN_BDC,
&creds)) {
return false;
}
status = torture_temp_dir(tctx, "PACVerify", &tmp_dir);
torture_assert_ntstatus_ok(tctx, status, "torture_temp_dir failed");
status = gensec_client_start(tctx, &gensec_client_context, tctx->ev,
lp_gensec_settings(tctx, tctx->lp_ctx));
torture_assert_ntstatus_ok(tctx, status, "gensec_client_start (client) failed");
status = gensec_set_target_hostname(gensec_client_context, TEST_MACHINE_NAME);
status = gensec_set_credentials(gensec_client_context, cmdline_credentials);
torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (client) failed");
status = gensec_start_mech_by_sasl_name(gensec_client_context, "GSSAPI");
torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (client) failed");
status = gensec_server_start(tctx, tctx->ev,
lp_gensec_settings(tctx, tctx->lp_ctx),
NULL, &gensec_server_context);
torture_assert_ntstatus_ok(tctx, status, "gensec_server_start (server) failed");
status = gensec_set_credentials(gensec_server_context, credentials);
torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (server) failed");
status = gensec_start_mech_by_sasl_name(gensec_server_context, "GSSAPI");
torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (server) failed");
server_to_client = data_blob(NULL, 0);
do {
/* Do a client-server update dance */
status = gensec_update(gensec_client_context, tmp_ctx, server_to_client, &client_to_server);
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
;
torture_assert_ntstatus_ok(tctx, status, "gensec_update (client) failed");
}
status = gensec_update(gensec_server_context, tmp_ctx, client_to_server, &server_to_client);
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
;
torture_assert_ntstatus_ok(tctx, status, "gensec_update (server) failed");
}
if (NT_STATUS_IS_OK(status)) {
break;
}
} while (1);
/* Extract the PAC using Samba's code */
status = gensec_session_info(gensec_server_context, &session_info);
torture_assert_ntstatus_ok(tctx, status, "gensec_session_info failed");
pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
pac_wrapped_struct.ChecksumAndSignature = payload
= data_blob_talloc(tmp_ctx, NULL,
pac_wrapped_struct.ChecksumLength
+ pac_wrapped_struct.SignatureLength);
memcpy(&payload.data[0],
session_info->server_info->pac_srv_sig.signature.data,
pac_wrapped_struct.ChecksumLength);
memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
session_info->server_info->pac_kdc_sig.signature.data,
pac_wrapped_struct.SignatureLength);
ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
(ndr_push_flags_fn_t)ndr_push_PAC_Validate);
torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
generic.length = pac_wrapped.length;
generic.data = pac_wrapped.data;
/* Validate it over the netlogon pipe */
generic.identity_info.parameter_control = 0;
generic.identity_info.logon_id_high = 0;
generic.identity_info.logon_id_low = 0;
generic.identity_info.domain_name.string = session_info->server_info->domain_name;
generic.identity_info.account_name.string = session_info->server_info->account_name;
generic.identity_info.workstation.string = TEST_MACHINE_NAME;
generic.package_name.string = "Kerberos";
logon.generic = &generic;
ZERO_STRUCT(auth2);
netlogon_creds_client_authenticator(creds, &auth);
r.in.credential = &auth;
r.in.return_authenticator = &auth2;
r.in.logon = &logon;
r.in.logon_level = NetlogonGenericInformation;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.validation_level = NetlogonValidationGenericInfo2;
r.out.validation = &validation;
r.out.authoritative = &authoritative;
r.out.return_authenticator = &return_authenticator;
status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
torture_assert_ntstatus_ok(tctx, status, "LogonSamLogon failed");
/* This will break the signature nicely (even in the crypto wrapping), check we get a logon failure */
generic.data[generic.length-1]++;
logon.generic = &generic;
ZERO_STRUCT(auth2);
netlogon_creds_client_authenticator(creds, &auth);
r.in.credential = &auth;
r.in.return_authenticator = &auth2;
r.in.logon_level = NetlogonGenericInformation;
r.in.logon = &logon;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.validation_level = NetlogonValidationGenericInfo2;
status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
torture_assert_ntstatus_equal(tctx, status, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
torture_assert(tctx, netlogon_creds_client_check(creds, &r.out.return_authenticator->cred),
"Credential chaining failed");
/* This will break the parsing nicely (even in the crypto wrapping), check we get INVALID_PARAMETER */
generic.length--;
logon.generic = &generic;
ZERO_STRUCT(auth2);
netlogon_creds_client_authenticator(creds, &auth);
r.in.credential = &auth;
r.in.return_authenticator = &auth2;
r.in.logon_level = NetlogonGenericInformation;
r.in.logon = &logon;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.validation_level = NetlogonValidationGenericInfo2;
status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
torture_assert_ntstatus_equal(tctx, status, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
torture_assert(tctx, netlogon_creds_client_check(creds,
&r.out.return_authenticator->cred),
"Credential chaining failed");
pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
/* Break the SignatureType */
pac_wrapped_struct.SignatureType++;
pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
pac_wrapped_struct.ChecksumAndSignature = payload
= data_blob_talloc(tmp_ctx, NULL,
pac_wrapped_struct.ChecksumLength
+ pac_wrapped_struct.SignatureLength);
memcpy(&payload.data[0],
session_info->server_info->pac_srv_sig.signature.data,
pac_wrapped_struct.ChecksumLength);
memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
session_info->server_info->pac_kdc_sig.signature.data,
pac_wrapped_struct.SignatureLength);
ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
(ndr_push_flags_fn_t)ndr_push_PAC_Validate);
torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
generic.length = pac_wrapped.length;
generic.data = pac_wrapped.data;
logon.generic = &generic;
ZERO_STRUCT(auth2);
netlogon_creds_client_authenticator(creds, &auth);
r.in.credential = &auth;
r.in.return_authenticator = &auth2;
r.in.logon_level = NetlogonGenericInformation;
r.in.logon = &logon;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.validation_level = NetlogonValidationGenericInfo2;
status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
torture_assert_ntstatus_equal(tctx, status, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
torture_assert(tctx, netlogon_creds_client_check(creds, &r.out.return_authenticator->cred),
"Credential chaining failed");
pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
pac_wrapped_struct.ChecksumAndSignature = payload
= data_blob_talloc(tmp_ctx, NULL,
pac_wrapped_struct.ChecksumLength
+ pac_wrapped_struct.SignatureLength);
memcpy(&payload.data[0],
session_info->server_info->pac_srv_sig.signature.data,
pac_wrapped_struct.ChecksumLength);
memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
session_info->server_info->pac_kdc_sig.signature.data,
pac_wrapped_struct.SignatureLength);
/* Break the signature length */
pac_wrapped_struct.SignatureLength++;
ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
(ndr_push_flags_fn_t)ndr_push_PAC_Validate);
torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
generic.length = pac_wrapped.length;
generic.data = pac_wrapped.data;
logon.generic = &generic;
ZERO_STRUCT(auth2);
netlogon_creds_client_authenticator(creds, &auth);
r.in.credential = &auth;
r.in.return_authenticator = &auth2;
r.in.logon_level = NetlogonGenericInformation;
r.in.logon = &logon;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.validation_level = NetlogonValidationGenericInfo2;
status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
torture_assert_ntstatus_equal(tctx, status, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
torture_assert(tctx, netlogon_creds_client_check(creds, &r.out.return_authenticator->cred),
"Credential chaining failed");
return true;
}
krb5_error_code kpasswd_handle_request(struct kdc_server *kdc,
TALLOC_CTX *mem_ctx,
struct gensec_security *gensec_security,
uint16_t verno,
DATA_BLOB *decoded_data,
DATA_BLOB *kpasswd_reply,
const char **error_string)
{
struct auth_session_info *session_info;
NTSTATUS status;
status = gensec_session_info(gensec_security,
mem_ctx,
&session_info);
if (!NT_STATUS_IS_OK(status)) {
*error_string = talloc_asprintf(mem_ctx,
"gensec_session_info failed - "
"%s",
nt_errstr(status));
return KRB5_KPASSWD_HARDERROR;
}
switch(verno) {
case 1: {
DATA_BLOB password;
bool ok;
ok = convert_string_talloc_handle(mem_ctx,
lpcfg_iconv_handle(kdc->task->lp_ctx),
CH_UTF8,
CH_UTF16,
(const char *)decoded_data->data,
decoded_data->length,
(void **)&password.data,
&password.length);
if (!ok) {
*error_string = "String conversion failed!";
DBG_WARNING("%s\n", *error_string);
return KRB5_KPASSWD_HARDERROR;
}
return kpasswd_change_password(kdc,
mem_ctx,
session_info,
&password,
kpasswd_reply,
error_string);
}
case RFC3244_VERSION: {
return kpasswd_set_password(kdc,
mem_ctx,
session_info,
decoded_data,
kpasswd_reply,
error_string);
}
default:
return KRB5_KPASSWD_BAD_VERSION;
}
return 0;
}
