/*
Unix SMB/CIFS implementation.
low level WINS replication client code
Copyright (C) Andrew Tridgell 2005
Copyright (C) Stefan Metzmacher 2005-2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
*/
#include "includes.h"
#include "lib/events/events.h"
#include "../lib/util/dlinklist.h"
#include "lib/socket/socket.h"
#include "libcli/wrepl/winsrepl.h"
#include "librpc/gen_ndr/ndr_winsrepl.h"
#include "lib/stream/packet.h"
#include "libcli/composite/composite.h"
#include "system/network.h"
#include "lib/socket/netif.h"
#include "param/param.h"
#include "lib/util/tevent_ntstatus.h"
static struct wrepl_request *wrepl_request_finished(struct wrepl_request *req, NTSTATUS status);
/*
mark all pending requests as dead - called when a socket error happens
*/
static void wrepl_socket_dead(struct wrepl_socket *wrepl_socket, NTSTATUS status)
{
wrepl_socket->dead = true;
if (wrepl_socket->packet) {
packet_recv_disable(wrepl_socket->packet);
packet_set_fde(wrepl_socket->packet, NULL);
packet_set_socket(wrepl_socket->packet, NULL);
}
if (wrepl_socket->event.fde) {
talloc_free(wrepl_socket->event.fde);
wrepl_socket->event.fde = NULL;
}
if (wrepl_socket->sock) {
talloc_free(wrepl_socket->sock);
wrepl_socket->sock = NULL;
}
if (NT_STATUS_EQUAL(NT_STATUS_UNSUCCESSFUL, status)) {
status = NT_STATUS_UNEXPECTED_NETWORK_ERROR;
}
while (wrepl_socket->recv_queue) {
struct wrepl_request *req = wrepl_socket->recv_queue;
DLIST_REMOVE(wrepl_socket->recv_queue, req);
wrepl_request_finished(req, status);
}
talloc_set_destructor(wrepl_socket, NULL);
if (wrepl_socket->free_skipped) {
talloc_free(wrepl_socket);
}
}
static void wrepl_request_timeout_handler(struct tevent_context *ev, struct tevent_timer *te,
struct timeval t, void *ptr)
{
struct wrepl_request *req = talloc_get_type(ptr, struct wrepl_request);
wrepl_socket_dead(req->wrepl_socket, NT_STATUS_IO_TIMEOUT);
}
/*
handle recv events
*/
static NTSTATUS wrepl_finish_recv(void *private_data, DATA_BLOB packet_blob_in)
{
struct wrepl_socket *wrepl_socket = talloc_get_type(private_data, struct wrepl_socket);
struct wrepl_request *req = wrepl_socket->recv_queue;
DATA_BLOB blob;
enum ndr_err_code ndr_err;
if (!req) {
DEBUG(1,("Received unexpected WINS packet of length %u!\n",
(unsigned)packet_blob_in.length));
return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
req->packet = talloc(req, struct wrepl_packet);
NT_STATUS_HAVE_NO_MEMORY(req->packet);
blob.data = packet_blob_in.data + 4;
blob.length = packet_blob_in.length - 4;
/* we have a full request - parse it */
ndr_err = ndr_pull_struct_blob(&blob, req->packet, wrepl_socket->iconv_convenience, req->packet,
(ndr_pull_flags_fn_t)ndr_pull_wrepl_packet);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
wrepl_request_finished(req, status);
return NT_STATUS_OK;
}
if (DEBUGLVL(10)) {
DEBUG(10,("Received WINS packet of length %u\n",
(unsigned)packet_blob_in.length));
NDR_PRINT_DEBUG(wrepl_packet, req->packet);
}
wrepl_request_finished(req, NT_STATUS_OK);
return NT_STATUS_OK;
}
/*
handler for winrepl events
*/
static void wrepl_handler(struct tevent_context *ev, struct tevent_fd *fde,
uint16_t flags, void *private_data)
{
struct wrepl_socket *wrepl_socket = talloc_get_type(private_data,
struct wrepl_socket);
if (flags & EVENT_FD_READ) {
packet_recv(wrepl_socket->packet);
return;
}
if (flags & EVENT_FD_WRITE) {
packet_queue_run(wrepl_socket->packet);
}
}
static void wrepl_error(void *private_data, NTSTATUS status)
{
struct wrepl_socket *wrepl_socket = talloc_get_type(private_data,
struct wrepl_socket);
wrepl_socket_dead(wrepl_socket, status);
}
/*
destroy a wrepl_socket destructor
*/
static int wrepl_socket_destructor(struct wrepl_socket *sock)
{
if (sock->dead) {
sock->free_skipped = true;
return -1;
}
wrepl_socket_dead(sock, NT_STATUS_LOCAL_DISCONNECT);
return 0;
}
/*
initialise a wrepl_socket. The event_ctx is optional, if provided then
operations will use that event context
*/
struct wrepl_socket *wrepl_socket_init(TALLOC_CTX *mem_ctx,
struct tevent_context *event_ctx,
struct smb_iconv_convenience *iconv_convenience)
{
struct wrepl_socket *wrepl_socket;
NTSTATUS status;
wrepl_socket = talloc_zero(mem_ctx, struct wrepl_socket);
if (!wrepl_socket) return NULL;
wrepl_socket->event.ctx = event_ctx;
if (!wrepl_socket->event.ctx) goto failed;
wrepl_socket->iconv_convenience = iconv_convenience;
status = socket_create("ip", SOCKET_TYPE_STREAM, &wrepl_socket->sock, 0);
if (!NT_STATUS_IS_OK(status)) goto failed;
talloc_steal(wrepl_socket, wrepl_socket->sock);
wrepl_socket->request_timeout = WREPL_SOCKET_REQUEST_TIMEOUT;
talloc_set_destructor(wrepl_socket, wrepl_socket_destructor);
return wrepl_socket;
failed:
talloc_free(wrepl_socket);
return NULL;
}
/*
initialise a wrepl_socket from an already existing connection
*/
struct wrepl_socket *wrepl_socket_merge(TALLOC_CTX *mem_ctx,
struct tevent_context *event_ctx,
struct socket_context *sock,
struct packet_context *pack)
{
struct wrepl_socket *wrepl_socket;
wrepl_socket = talloc_zero(mem_ctx, struct wrepl_socket);
if (wrepl_socket == NULL) goto failed;
wrepl_socket->event.ctx = event_ctx;
if (wrepl_socket->event.ctx == NULL) goto failed;
wrepl_socket->sock = sock;
talloc_steal(wrepl_socket, wrepl_socket->sock);
wrepl_socket->request_timeout = WREPL_SOCKET_REQUEST_TIMEOUT;
wrepl_socket->event.fde = event_add_fd(wrepl_socket->event.ctx, wrepl_socket,
socket_get_fd(wrepl_socket->sock),
EVENT_FD_READ,
wrepl_handler, wrepl_socket);
if (wrepl_socket->event.fde == NULL) {
goto failed;
}
wrepl_socket->packet = pack;
talloc_steal(wrepl_socket, wrepl_socket->packet);
packet_set_private(wrepl_socket->packet, wrepl_socket);
packet_set_socket(wrepl_socket->packet, wrepl_socket->sock);
packet_set_callback(wrepl_socket->packet, wrepl_finish_recv);
packet_set_full_request(wrepl_socket->packet, packet_full_request_u32);
packet_set_error_handler(wrepl_socket->packet, wrepl_error);
packet_set_event_context(wrepl_socket->packet, wrepl_socket->event.ctx);
packet_set_fde(wrepl_socket->packet, wrepl_socket->event.fde);
packet_set_serialise(wrepl_socket->packet);
talloc_set_destructor(wrepl_socket, wrepl_socket_destructor);
return wrepl_socket;
failed:
talloc_free(wrepl_socket);
return NULL;
}
/*
destroy a wrepl_request
*/
static int wrepl_request_destructor(struct wrepl_request *req)
{
if (req->state == WREPL_REQUEST_RECV) {
DLIST_REMOVE(req->wrepl_socket->recv_queue, req);
}
req->state = WREPL_REQUEST_ERROR;
return 0;
}
/*
wait for a request to complete
*/
static NTSTATUS wrepl_request_wait(struct wrepl_request *req)
{
NT_STATUS_HAVE_NO_MEMORY(req);
while (req->state < WREPL_REQUEST_DONE) {
event_loop_once(req->wrepl_socket->event.ctx);
}
return req->status;
}
const char *wrepl_best_ip(struct loadparm_context *lp_ctx, const char *peer_ip)
{
struct interface *ifaces;
load_interfaces(lp_ctx, lp_interfaces(lp_ctx), &ifaces);
return iface_best_ip(ifaces, peer_ip);
}
struct wrepl_connect_state {
struct wrepl_socket *wrepl_socket;
};
static void wrepl_connect_handler(struct composite_context *creq);
struct tevent_req *wrepl_connect_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct wrepl_socket *wrepl_socket,
const char *our_ip, const char *peer_ip)
{
struct tevent_req *req;
struct wrepl_connect_state *state;
struct composite_context *subreq;
struct socket_address *peer, *us;
req = tevent_req_create(mem_ctx, &state,
struct wrepl_connect_state);
if (req == NULL) {
return NULL;
}
state->wrepl_socket = wrepl_socket;
us = socket_address_from_strings(state, wrepl_socket->sock->backend_name,
our_ip, 0);
if (tevent_req_nomem(us, req)) {
return tevent_req_post(req, ev);
}
peer = socket_address_from_strings(state, wrepl_socket->sock->backend_name,
peer_ip, WINS_REPLICATION_PORT);
if (tevent_req_nomem(peer, req)) {
return tevent_req_post(req, ev);
}
subreq = socket_connect_send(wrepl_socket->sock, us, peer,
0, wrepl_socket->event.ctx);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
subreq->async.fn = wrepl_connect_handler;
subreq->async.private_data = req;
return req;
}
static void wrepl_connect_handler(struct composite_context *subreq)
{
struct tevent_req *req = talloc_get_type_abort(subreq->async.private_data,
struct tevent_req);
struct wrepl_connect_state *state = tevent_req_data(req,
struct wrepl_connect_state);
struct wrepl_socket *wrepl_socket = state->wrepl_socket;
NTSTATUS status;
status = socket_connect_recv(subreq);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
return;
}
wrepl_socket->event.fde = event_add_fd(wrepl_socket->event.ctx, wrepl_socket,
socket_get_fd(wrepl_socket->sock),
EVENT_FD_READ,
wrepl_handler, wrepl_socket);
if (tevent_req_nomem(wrepl_socket->event.fde, req)) {
return;
}
/* setup the stream -> packet parser */
wrepl_socket->packet = packet_init(wrepl_socket);
if (tevent_req_nomem(wrepl_socket->packet, req)) {
return;
}
packet_set_private(wrepl_socket->packet, wrepl_socket);
packet_set_socket(wrepl_socket->packet, wrepl_socket->sock);
packet_set_callback(wrepl_socket->packet, wrepl_finish_recv);
packet_set_full_request(wrepl_socket->packet, packet_full_request_u32);
packet_set_error_handler(wrepl_socket->packet, wrepl_error);
packet_set_event_context(wrepl_socket->packet, wrepl_socket->event.ctx);
packet_set_fde(wrepl_socket->packet, wrepl_socket->event.fde);
packet_set_serialise(wrepl_socket->packet);
tevent_req_done(req);
}
/*
connect a wrepl_socket to a WINS server - recv side
*/
NTSTATUS wrepl_connect_recv(struct tevent_req *req)
{
struct wrepl_connect_state *state = tevent_req_data(req,
struct wrepl_connect_state);
struct wrepl_socket *wrepl_socket = state->wrepl_socket;
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
wrepl_socket_dead(wrepl_socket, status);
tevent_req_received(req);
return status;
}
tevent_req_received(req);
return NT_STATUS_OK;
}
/*
connect a wrepl_socket to a WINS server - sync API
*/
NTSTATUS wrepl_connect(struct wrepl_socket *wrepl_socket,
const char *our_ip, const char *peer_ip)
{
struct tevent_req *subreq;
bool ok;
NTSTATUS status;
subreq = wrepl_connect_send(wrepl_socket, wrepl_socket->event.ctx,
wrepl_socket, our_ip, peer_ip);
NT_STATUS_HAVE_NO_MEMORY(subreq);
ok = tevent_req_poll(subreq, wrepl_socket->event.ctx);
if (!ok) {
TALLOC_FREE(subreq);
return NT_STATUS_INTERNAL_ERROR;
}
status = wrepl_connect_recv(subreq);
TALLOC_FREE(subreq);
NT_STATUS_NOT_OK_RETURN(status);
return NT_STATUS_OK;
}
/*
callback from wrepl_request_trigger()
*/
static void wrepl_request_trigger_handler(struct tevent_context *ev, struct tevent_timer *te,
struct timeval t, void *ptr)
{
struct wrepl_request *req = talloc_get_type(ptr, struct wrepl_request);
if (req->async.fn) {
req->async.fn(req);
}
}
/*
trigger an immediate event on a wrepl_request
the return value should only be used in wrepl_request_send()
this is the only place where req->trigger is true
*/
static struct wrepl_request *wrepl_request_finished(struct wrepl_request *req, NTSTATUS status)
{
struct tevent_timer *te;
if (req->state == WREPL_REQUEST_RECV) {
DLIST_REMOVE(req->wrepl_socket->recv_queue, req);
}
if (!NT_STATUS_IS_OK(status)) {
req->state = WREPL_REQUEST_ERROR;
} else {
req->state = WREPL_REQUEST_DONE;
}
req->status = status;
if (req->trigger) {
req->trigger = false;
/* a zero timeout means immediate */
te = event_add_timed(req->wrepl_socket->event.ctx,
req, timeval_zero(),
wrepl_request_trigger_handler, req);
if (!te) {
talloc_free(req);
return NULL;
}
return req;
}
if (req->async.fn) {
req->async.fn(req);
}
return NULL;
}
struct wrepl_send_ctrl_state {
struct wrepl_send_ctrl ctrl;
struct wrepl_request *req;
struct wrepl_socket *wrepl_sock;
};
static int wrepl_send_ctrl_destructor(struct wrepl_send_ctrl_state *s)
{
struct wrepl_request *req = s->wrepl_sock->recv_queue;
/* check if the request is still in WREPL_STATE_RECV,
* we need this here because the caller has may called
* talloc_free(req) and wrepl_send_ctrl_state isn't
* a talloc child of the request, so our s->req pointer
* is maybe invalid!
*/
for (; req; req = req->next) {
if (req == s->req) break;
}
if (!req) return 0;
/* here, we need to make sure the async request handler is called
* later in the next event_loop and now now
*/
req->trigger = true;
wrepl_request_finished(req, NT_STATUS_OK);
if (s->ctrl.disconnect_after_send) {
wrepl_socket_dead(s->wrepl_sock, NT_STATUS_LOCAL_DISCONNECT);
}
return 0;
}
/*
send a generic wins replication request
*/
static struct wrepl_request *wrepl_request_internal_send(struct wrepl_socket *wrepl_socket,
struct wrepl_packet *packet,
struct wrepl_send_ctrl *ctrl)
{
struct wrepl_request *req;
struct wrepl_wrap wrap;
DATA_BLOB blob;
NTSTATUS status;
enum ndr_err_code ndr_err;
req = talloc_zero(wrepl_socket, struct wrepl_request);
if (!req) return NULL;
req->wrepl_socket = wrepl_socket;
req->state = WREPL_REQUEST_RECV;
req->trigger = true;
DLIST_ADD_END(wrepl_socket->recv_queue, req, struct wrepl_request *);
talloc_set_destructor(req, wrepl_request_destructor);
if (wrepl_socket->dead) {
return wrepl_request_finished(req, NT_STATUS_INVALID_CONNECTION);
}
wrap.packet = *packet;
ndr_err = ndr_push_struct_blob(&blob, req, wrepl_socket->iconv_convenience, &wrap,
(ndr_push_flags_fn_t)ndr_push_wrepl_wrap);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
status = ndr_map_error2ntstatus(ndr_err);
return wrepl_request_finished(req, status);
}
if (DEBUGLVL(10)) {
DEBUG(10,("Sending WINS packet of length %u\n",
(unsigned)blob.length));
NDR_PRINT_DEBUG(wrepl_packet, &wrap.packet);
}
if (wrepl_socket->request_timeout > 0) {
req->te = event_add_timed(wrepl_socket->event.ctx, req,
timeval_current_ofs(wrepl_socket->request_timeout, 0),
wrepl_request_timeout_handler, req);
if (!req->te) return wrepl_request_finished(req, NT_STATUS_NO_MEMORY);
}
if (ctrl && (ctrl->send_only || ctrl->disconnect_after_send)) {
struct wrepl_send_ctrl_state *s = talloc(blob.data, struct wrepl_send_ctrl_state);
if (!s) return wrepl_request_finished(req, NT_STATUS_NO_MEMORY);
s->ctrl = *ctrl;
s->req = req;
s->wrepl_sock = wrepl_socket;
talloc_set_destructor(s, wrepl_send_ctrl_destructor);
}
status = packet_send(wrepl_socket->packet, blob);
if (!NT_STATUS_IS_OK(status)) {
return wrepl_request_finished(req, status);
}
req->trigger = false;
return req;
}
/*
receive a generic WINS replication reply
*/
static NTSTATUS wrepl_request_internal_recv(struct wrepl_request *req,
TALLOC_CTX *mem_ctx,
struct wrepl_packet **packet)
{
NTSTATUS status = wrepl_request_wait(req);
if (NT_STATUS_IS_OK(status) && packet) {
*packet = talloc_steal(mem_ctx, req->packet);
}
talloc_free(req);
return status;
}
struct wrepl_request *wrepl_request_send(struct wrepl_socket *wrepl_socket,
struct wrepl_packet *packet,
struct wrepl_send_ctrl *ctrl)
{
return wrepl_request_internal_send(wrepl_socket, packet, ctrl);
}
NTSTATUS wrepl_request_recv(struct wrepl_request *req,
TALLOC_CTX *mem_ctx,
struct wrepl_packet **packet)
{
return wrepl_request_internal_recv(req, mem_ctx, packet);
}
/*
a full WINS replication request/response
*/
NTSTATUS wrepl_request(struct wrepl_socket *wrepl_socket,
TALLOC_CTX *mem_ctx,
struct wrepl_packet *req_packet,
struct wrepl_packet **reply_packet)
{
struct wrepl_request *req = wrepl_request_send(wrepl_socket, req_packet, NULL);
return wrepl_request_recv(req, mem_ctx, reply_packet);
}
struct wrepl_associate_state {
struct wrepl_packet packet;
uint32_t assoc_ctx;
uint16_t major_version;
};
static void wrepl_associate_done(struct wrepl_request *subreq);
struct tevent_req *wrepl_associate_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct wrepl_socket *wrepl_socket,
const struct wrepl_associate *io)
{
struct tevent_req *req;
struct wrepl_associate_state *state;
struct wrepl_request *subreq;
if (wrepl_socket->event.ctx != ev) {
/* TODO: remove wrepl_socket->event.ctx !!! */
smb_panic("wrepl_associate_send event context mismatch!");
return NULL;
}
req = tevent_req_create(mem_ctx, &state,
struct wrepl_associate_state);
if (req == NULL) {
return NULL;
};
state->packet.opcode = WREPL_OPCODE_BITS;
state->packet.mess_type = WREPL_START_ASSOCIATION;
state->packet.message.start.minor_version = 2;
state->packet.message.start.major_version = 5;
/*
* nt4 uses 41 bytes for the start_association call
* so do it the same and as we don't know th emeanings of this bytes
* we just send zeros and nt4, w2k and w2k3 seems to be happy with this
*
* if we don't do this nt4 uses an old version of the wins replication protocol
* and that would break nt4 <-> samba replication
*/
state->packet.padding = data_blob_talloc(state, NULL, 21);
if (tevent_req_nomem(state->packet.padding.data, req)) {
return tevent_req_post(req, ev);
}
memset(state->packet.padding.data, 0, state->packet.padding.length);
subreq = wrepl_request_send(wrepl_socket, &state->packet, NULL);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
subreq->async.fn = wrepl_associate_done;
subreq->async.private_data = req;
return req;
}
static void wrepl_associate_done(struct wrepl_request *subreq)
{
struct tevent_req *req = talloc_get_type_abort(subreq->async.private_data,
struct tevent_req);
struct wrepl_associate_state *state = tevent_req_data(req,
struct wrepl_associate_state);
NTSTATUS status;
struct wrepl_packet *packet;
status = wrepl_request_recv(subreq, state, &packet);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
return;
}
if (packet->mess_type != WREPL_START_ASSOCIATION_REPLY) {
tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
return;
}
state->assoc_ctx = packet->message.start_reply.assoc_ctx;
state->major_version = packet->message.start_reply.major_version;
tevent_req_done(req);
}
/*
setup an association - recv
*/
NTSTATUS wrepl_associate_recv(struct tevent_req *req,
struct wrepl_associate *io)
{
struct wrepl_associate_state *state = tevent_req_data(req,
struct wrepl_associate_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
tevent_req_received(req);
return status;
}
io->out.assoc_ctx = state->assoc_ctx;
io->out.major_version = state->major_version;
tevent_req_received(req);
return NT_STATUS_OK;
}
/*
setup an association - sync api
*/
NTSTATUS wrepl_associate(struct wrepl_socket *wrepl_socket,
struct wrepl_associate *io)
{
struct tevent_req *subreq;
bool ok;
NTSTATUS status;
subreq = wrepl_associate_send(wrepl_socket, wrepl_socket->event.ctx,
wrepl_socket, io);
NT_STATUS_HAVE_NO_MEMORY(subreq);
ok = tevent_req_poll(subreq, wrepl_socket->event.ctx);
if (!ok) {
TALLOC_FREE(subreq);
return NT_STATUS_INTERNAL_ERROR;
}
status = wrepl_associate_recv(subreq, io);
TALLOC_FREE(subreq);
NT_STATUS_NOT_OK_RETURN(status);
return NT_STATUS_OK;
}
struct wrepl_associate_stop_state {
struct wrepl_packet packet;
struct wrepl_send_ctrl ctrl;
};
static void wrepl_associate_stop_done(struct wrepl_request *subreq);
struct tevent_req *wrepl_associate_stop_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct wrepl_socket *wrepl_socket,
const struct wrepl_associate_stop *io)
{
struct tevent_req *req;
struct wrepl_associate_stop_state *state;
struct wrepl_request *subreq;
if (wrepl_socket->event.ctx != ev) {
/* TODO: remove wrepl_socket->event.ctx !!! */
smb_panic("wrepl_associate_stop_send event context mismatch!");
return NULL;
}
req = tevent_req_create(mem_ctx, &state,
struct wrepl_associate_stop_state);
if (req == NULL) {
return NULL;
};
state->packet.opcode = WREPL_OPCODE_BITS;
state->packet.assoc_ctx = io->in.assoc_ctx;
state->packet.mess_type = WREPL_STOP_ASSOCIATION;
state->packet.message.stop.reason = io->in.reason;
if (io->in.reason == 0) {
state->ctrl.send_only = true;
state->ctrl.disconnect_after_send = true;
}
subreq = wrepl_request_send(wrepl_socket, &state->packet, &state->ctrl);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
subreq->async.fn = wrepl_associate_stop_done;
subreq->async.private_data = req;
return req;
}
static void wrepl_associate_stop_done(struct wrepl_request *subreq)
{
struct tevent_req *req = talloc_get_type_abort(subreq->async.private_data,
struct tevent_req);
struct wrepl_associate_stop_state *state = tevent_req_data(req,
struct wrepl_associate_stop_state);
NTSTATUS status;
/* currently we don't care about a possible response */
status = wrepl_request_recv(subreq, state, NULL);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
return;
}
tevent_req_done(req);
}
/*
stop an association - recv
*/
NTSTATUS wrepl_associate_stop_recv(struct tevent_req *req,
struct wrepl_associate_stop *io)
{
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
tevent_req_received(req);
return status;
}
tevent_req_received(req);
return NT_STATUS_OK;
}
/*
setup an association - sync api
*/
NTSTATUS wrepl_associate_stop(struct wrepl_socket *wrepl_socket,
struct wrepl_associate_stop *io)
{
struct tevent_req *subreq;
bool ok;
NTSTATUS status;
subreq = wrepl_associate_stop_send(wrepl_socket, wrepl_socket->event.ctx,
wrepl_socket, io);
NT_STATUS_HAVE_NO_MEMORY(subreq);
ok = tevent_req_poll(subreq, wrepl_socket->event.ctx);
if (!ok) {
TALLOC_FREE(subreq);
return NT_STATUS_INTERNAL_ERROR;
}
status = wrepl_associate_stop_recv(subreq, io);
TALLOC_FREE(subreq);
NT_STATUS_NOT_OK_RETURN(status);
return NT_STATUS_OK;
}
struct wrepl_pull_table_state {
struct wrepl_packet packet;
uint32_t num_partners;
struct wrepl_wins_owner *partners;
};
static void wrepl_pull_table_done(struct wrepl_request *subreq);
struct tevent_req *wrepl_pull_table_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct wrepl_socket *wrepl_socket,
const struct wrepl_pull_table *io)
{
struct tevent_req *req;
struct wrepl_pull_table_state *state;
struct wrepl_request *subreq;
if (wrepl_socket->event.ctx != ev) {
/* TODO: remove wrepl_socket->event.ctx !!! */
smb_panic("wrepl_pull_table_send event context mismatch!");
return NULL;
}
req = tevent_req_create(mem_ctx, &state,
struct wrepl_pull_table_state);
if (req == NULL) {
return NULL;
};
state->packet.opcode = WREPL_OPCODE_BITS;
state->packet.assoc_ctx = io->in.assoc_ctx;
state->packet.mess_type = WREPL_REPLICATION;
state->packet.message.replication.command = WREPL_REPL_TABLE_QUERY;
subreq = wrepl_request_send(wrepl_socket, &state->packet, NULL);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
subreq->async.fn = wrepl_pull_table_done;
subreq->async.private_data = req;
return req;
}
static void wrepl_pull_table_done(struct wrepl_request *subreq)
{
struct tevent_req *req = talloc_get_type_abort(subreq->async.private_data,
struct tevent_req);
struct wrepl_pull_table_state *state = tevent_req_data(req,
struct wrepl_pull_table_state);
NTSTATUS status;
struct wrepl_packet *packet;
struct wrepl_table *table;
status = wrepl_request_recv(subreq, state, &packet);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
return;
}
if (packet->mess_type != WREPL_REPLICATION) {
tevent_req_nterror(req, NT_STATUS_NETWORK_ACCESS_DENIED);
return;
}
if (packet->message.replication.command != WREPL_REPL_TABLE_REPLY) {
tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
return;
}
table = &packet->message.replication.info.table;
state->num_partners = table->partner_count;
state->partners = talloc_move(state, &table->partners);
tevent_req_done(req);
}
/*
fetch the partner tables - recv
*/
NTSTATUS wrepl_pull_table_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
struct wrepl_pull_table *io)
{
struct wrepl_pull_table_state *state = tevent_req_data(req,
struct wrepl_pull_table_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
tevent_req_received(req);
return status;
}
io->out.num_partners = state->num_partners;
io->out.partners = talloc_move(mem_ctx, &state->partners);
tevent_req_received(req);
return NT_STATUS_OK;
}
/*
fetch the partner table - sync api
*/
NTSTATUS wrepl_pull_table(struct wrepl_socket *wrepl_socket,
TALLOC_CTX *mem_ctx,
struct wrepl_pull_table *io)
{
struct tevent_req *subreq;
bool ok;
NTSTATUS status;
subreq = wrepl_pull_table_send(mem_ctx, wrepl_socket->event.ctx,
wrepl_socket, io);
NT_STATUS_HAVE_NO_MEMORY(subreq);
ok = tevent_req_poll(subreq, wrepl_socket->event.ctx);
if (!ok) {
TALLOC_FREE(subreq);
return NT_STATUS_INTERNAL_ERROR;
}
status = wrepl_pull_table_recv(subreq, mem_ctx, io);
TALLOC_FREE(subreq);
NT_STATUS_NOT_OK_RETURN(status);
return NT_STATUS_OK;
}
struct wrepl_pull_names_state {
struct {
const struct wrepl_pull_names *io;
} caller;
struct wrepl_packet packet;
uint32_t num_names;
struct wrepl_name *names;
};
static void wrepl_pull_names_done(struct wrepl_request *subreq);
struct tevent_req *wrepl_pull_names_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct wrepl_socket *wrepl_socket,
const struct wrepl_pull_names *io)
{
struct tevent_req *req;
struct wrepl_pull_names_state *state;
struct wrepl_request *subreq;
if (wrepl_socket->event.ctx != ev) {
/* TODO: remove wrepl_socket->event.ctx !!! */
smb_panic("wrepl_pull_names_send event context mismatch!");
return NULL;
}
req = tevent_req_create(mem_ctx, &state,
struct wrepl_pull_names_state);
if (req == NULL) {
return NULL;
};
state->caller.io = io;
state->packet.opcode = WREPL_OPCODE_BITS;
state->packet.assoc_ctx = io->in.assoc_ctx;
state->packet.mess_type = WREPL_REPLICATION;
state->packet.message.replication.command = WREPL_REPL_SEND_REQUEST;
state->packet.message.replication.info.owner = io->in.partner;
subreq = wrepl_request_send(wrepl_socket, &state->packet, NULL);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
subreq->async.fn = wrepl_pull_names_done;
subreq->async.private_data = req;
return req;
}
static void wrepl_pull_names_done(struct wrepl_request *subreq)
{
struct tevent_req *req = talloc_get_type_abort(subreq->async.private_data,
struct tevent_req);
struct wrepl_pull_names_state *state = tevent_req_data(req,
struct wrepl_pull_names_state);
NTSTATUS status;
struct wrepl_packet *packet;
uint32_t i;
status = wrepl_request_recv(subreq, state, &packet);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
return;
}
if (packet->mess_type != WREPL_REPLICATION) {
tevent_req_nterror(req, NT_STATUS_NETWORK_ACCESS_DENIED);
return;
}
if (packet->message.replication.command != WREPL_REPL_SEND_REPLY) {
tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
return;
}
state->num_names = packet->message.replication.info.reply.num_names;
state->names = talloc_array(state, struct wrepl_name, state->num_names);
if (tevent_req_nomem(state->names, req)) {
return;
}
/* convert the list of names and addresses to a sane format */
for (i=0; i < state->num_names; i++) {
struct wrepl_wins_name *wname = &packet->message.replication.info.reply.names[i];
struct wrepl_name *name = &state->names[i];
name->name = *wname->name;
talloc_steal(state->names, wname->name);
name->type = WREPL_NAME_TYPE(wname->flags);
name->state = WREPL_NAME_STATE(wname->flags);
name->node = WREPL_NAME_NODE(wname->flags);
name->is_static = WREPL_NAME_IS_STATIC(wname->flags);
name->raw_flags = wname->flags;
name->version_id= wname->id;
name->owner = talloc_strdup(state->names,
state->caller.io->in.partner.address);
if (tevent_req_nomem(name->owner, req)) {
return;
}
/* trying to save 1 or 2 bytes on the wire isn't a good idea */
if (wname->flags & 2) {
uint32_t j;
name->num_addresses = wname->addresses.addresses.num_ips;
name->addresses = talloc_array(state->names,
struct wrepl_address,
name->num_addresses);
if (tevent_req_nomem(name->addresses, req)) {
return;
}
for (j=0;jnum_addresses;j++) {
name->addresses[j].owner =
talloc_move(name->addresses,
&wname->addresses.addresses.ips[j].owner);
name->addresses[j].address =
talloc_move(name->addresses,
&wname->addresses.addresses.ips[j].ip);
}
} else {
name->num_addresses = 1;
name->addresses = talloc_array(state->names,
struct wrepl_address,
name->num_addresses);
if (tevent_req_nomem(name->addresses, req)) {
return;
}
name->addresses[0].owner = talloc_strdup(name->addresses, name->owner);
if (tevent_req_nomem(name->addresses[0].owner, req)) {
return;
}
name->addresses[0].address = talloc_move(name->addresses,
&wname->addresses.ip);
}
}
tevent_req_done(req);
}
/*
fetch the names for a WINS partner - recv
*/
NTSTATUS wrepl_pull_names_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
struct wrepl_pull_names *io)
{
struct wrepl_pull_names_state *state = tevent_req_data(req,
struct wrepl_pull_names_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
tevent_req_received(req);
return status;
}
io->out.num_names = state->num_names;
io->out.names = talloc_move(mem_ctx, &state->names);
tevent_req_received(req);
return NT_STATUS_OK;
}
/*
fetch the names for a WINS partner - sync api
*/
NTSTATUS wrepl_pull_names(struct wrepl_socket *wrepl_socket,
TALLOC_CTX *mem_ctx,
struct wrepl_pull_names *io)
{
struct tevent_req *subreq;
bool ok;
NTSTATUS status;
subreq = wrepl_pull_names_send(mem_ctx, wrepl_socket->event.ctx,
wrepl_socket, io);
NT_STATUS_HAVE_NO_MEMORY(subreq);
ok = tevent_req_poll(subreq, wrepl_socket->event.ctx);
if (!ok) {
TALLOC_FREE(subreq);
return NT_STATUS_INTERNAL_ERROR;
}
status = wrepl_pull_names_recv(subreq, mem_ctx, io);
TALLOC_FREE(subreq);
NT_STATUS_NOT_OK_RETURN(status);
return NT_STATUS_OK;
}