static void wreplsrv_call_writev_done(struct tevent_req *subreq)
{
struct wreplsrv_in_call *call = tevent_req_callback_data(subreq,
struct wreplsrv_in_call);
int sys_errno;
int rc;
rc = tstream_writev_queue_recv(subreq, &sys_errno);
TALLOC_FREE(subreq);
if (rc == -1) {
const char *reason;
reason = talloc_asprintf(call, "wreplsrv_call_writev_done: "
"tstream_writev_queue_recv() - %d:%s",
sys_errno, strerror(sys_errno));
if (reason == NULL) {
reason = "wreplsrv_call_writev_done: "
"tstream_writev_queue_recv() failed";
}
wreplsrv_terminate_in_connection(call->wreplconn, reason);
return;
}
if (call->terminate_after_send) {
wreplsrv_terminate_in_connection(call->wreplconn,
"wreplsrv_in_connection: terminate_after_send");
return;
}
talloc_free(call);
}
/*
called when we can write to a connection
*/
static void wreplsrv_send(struct stream_connection *conn, uint16_t flags)
{
struct wreplsrv_in_connection *wrepl_conn = talloc_get_type(conn->private_data,
struct wreplsrv_in_connection);
/* this should never be triggered! */
DEBUG(0,("Terminating connection - '%s'\n", "wrepl_send: called"));
wreplsrv_terminate_in_connection(wrepl_conn, "wrepl_send: called");
}
static int terminate_after_send_destructor(struct wreplsrv_in_connection **tas)
{
wreplsrv_terminate_in_connection(*tas, "wreplsrv_in_connection: terminate_after_send");
return 0;
}
/*
called when we get a new connection
*/
static void wreplsrv_accept(struct stream_connection *conn)
{
struct wreplsrv_service *service = talloc_get_type(conn->private_data, struct wreplsrv_service);
struct wreplsrv_in_connection *wrepl_conn;
struct tsocket_address *peer_addr;
char *peer_ip;
struct tevent_req *subreq;
int rc;
wrepl_conn = talloc_zero(conn, struct wreplsrv_in_connection);
if (wrepl_conn == NULL) {
stream_terminate_connection(conn,
"wreplsrv_accept: out of memory");
return;
}
wrepl_conn->send_queue = tevent_queue_create(conn, "wrepl_accept");
if (wrepl_conn->send_queue == NULL) {
stream_terminate_connection(conn,
"wrepl_accept: out of memory");
return;
}
TALLOC_FREE(conn->event.fde);
rc = tstream_bsd_existing_socket(wrepl_conn,
socket_get_fd(conn->socket),
&wrepl_conn->tstream);
if (rc < 0) {
stream_terminate_connection(conn,
"wrepl_accept: out of memory");
return;
}
socket_set_flags(conn->socket, SOCKET_FLAG_NOCLOSE);
wrepl_conn->conn = conn;
wrepl_conn->service = service;
peer_addr = conn->remote_address;
if (!tsocket_address_is_inet(peer_addr, "ipv4")) {
DEBUG(0,("wreplsrv_accept: non ipv4 peer addr '%s'\n",
tsocket_address_string(peer_addr, wrepl_conn)));
wreplsrv_terminate_in_connection(wrepl_conn, "wreplsrv_accept: "
"invalid peer IP");
return;
}
peer_ip = tsocket_address_inet_addr_string(peer_addr, wrepl_conn);
if (peer_ip == NULL) {
wreplsrv_terminate_in_connection(wrepl_conn, "wreplsrv_accept: "
"could not convert peer IP into a string");
return;
}
wrepl_conn->partner = wreplsrv_find_partner(service, peer_ip);
irpc_add_name(conn->msg_ctx, "wreplsrv_connection");
/*
* The wrepl pdu's has the length as 4 byte (initial_read_size),
* packet_full_request_u32 provides the pdu length then.
*/
subreq = tstream_read_pdu_blob_send(wrepl_conn,
wrepl_conn->conn->event.ctx,
wrepl_conn->tstream,
4, /* initial_read_size */
packet_full_request_u32,
wrepl_conn);
if (subreq == NULL) {
wreplsrv_terminate_in_connection(wrepl_conn, "wrepl_accept: "
"no memory for tstream_read_pdu_blob_send");
return;
}
tevent_req_set_callback(subreq, wreplsrv_call_loop, wrepl_conn);
}
/*
called when we get a new connection
*/
NTSTATUS wreplsrv_in_connection_merge(struct wreplsrv_partner *partner,
uint32_t peer_assoc_ctx,
struct tstream_context **stream,
struct wreplsrv_in_connection **_wrepl_in)
{
struct wreplsrv_service *service = partner->service;
struct wreplsrv_in_connection *wrepl_in;
const struct model_ops *model_ops;
struct stream_connection *conn;
struct tevent_req *subreq;
NTSTATUS status;
/* within the wrepl task we want to be a single process, so
ask for the single process model ops and pass these to the
stream_setup_socket() call. */
model_ops = process_model_startup("single");
if (!model_ops) {
DEBUG(0,("Can't find 'single' process model_ops"));
return NT_STATUS_INTERNAL_ERROR;
}
wrepl_in = talloc_zero(partner, struct wreplsrv_in_connection);
NT_STATUS_HAVE_NO_MEMORY(wrepl_in);
wrepl_in->service = service;
wrepl_in->partner = partner;
wrepl_in->tstream = talloc_move(wrepl_in, stream);
wrepl_in->assoc_ctx.peer_ctx = peer_assoc_ctx;
status = stream_new_connection_merge(service->task->event_ctx,
service->task->lp_ctx,
model_ops,
&wreplsrv_stream_ops,
service->task->msg_ctx,
wrepl_in,
&conn);
NT_STATUS_NOT_OK_RETURN(status);
/*
* make the wreplsrv_in_connection structure a child of the
* stream_connection, to match the hierarchy of wreplsrv_accept
*/
wrepl_in->conn = conn;
talloc_steal(conn, wrepl_in);
wrepl_in->send_queue = tevent_queue_create(wrepl_in, "wreplsrv_in_connection_merge");
if (wrepl_in->send_queue == NULL) {
stream_terminate_connection(conn,
"wreplsrv_in_connection_merge: out of memory");
return NT_STATUS_NO_MEMORY;
}
/*
* The wrepl pdu's has the length as 4 byte (initial_read_size),
* packet_full_request_u32 provides the pdu length then.
*/
subreq = tstream_read_pdu_blob_send(wrepl_in,
wrepl_in->conn->event.ctx,
wrepl_in->tstream,
4, /* initial_read_size */
packet_full_request_u32,
wrepl_in);
if (subreq == NULL) {
wreplsrv_terminate_in_connection(wrepl_in, "wreplsrv_in_connection_merge: "
"no memory for tstream_read_pdu_blob_send");
return NT_STATUS_NO_MEMORY;
}
tevent_req_set_callback(subreq, wreplsrv_call_loop, wrepl_in);
*_wrepl_in = wrepl_in;
return NT_STATUS_OK;
}
static void wreplsrv_call_loop(struct tevent_req *subreq)
{
struct wreplsrv_in_connection *wrepl_conn = tevent_req_callback_data(subreq,
struct wreplsrv_in_connection);
struct wreplsrv_in_call *call;
NTSTATUS status;
call = talloc_zero(wrepl_conn, struct wreplsrv_in_call);
if (call == NULL) {
wreplsrv_terminate_in_connection(wrepl_conn, "wreplsrv_call_loop: "
"no memory for wrepl_samba3_call");
return;
}
call->wreplconn = wrepl_conn;
status = tstream_read_pdu_blob_recv(subreq,
call,
&call->in);
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
const char *reason;
reason = talloc_asprintf(call, "wreplsrv_call_loop: "
"tstream_read_pdu_blob_recv() - %s",
nt_errstr(status));
if (!reason) {
reason = nt_errstr(status);
}
wreplsrv_terminate_in_connection(wrepl_conn, reason);
return;
}
DEBUG(10,("Received wrepl packet of length %lu from %s\n",
(long) call->in.length,
tsocket_address_string(wrepl_conn->conn->remote_address, call)));
/* skip length header */
call->in.data += 4;
call->in.length -= 4;
status = wreplsrv_process(wrepl_conn, &call);
if (!NT_STATUS_IS_OK(status)) {
const char *reason;
reason = talloc_asprintf(call, "wreplsrv_call_loop: "
"tstream_read_pdu_blob_recv() - %s",
nt_errstr(status));
if (reason == NULL) {
reason = nt_errstr(status);
}
wreplsrv_terminate_in_connection(wrepl_conn, reason);
return;
}
/* We handed over the connection so we're done here */
if (wrepl_conn->tstream == NULL) {
return;
}
/* Invalid WINS-Replication packet, we just ignore it */
if (call == NULL) {
goto noreply;
}
call->out_iov[0].iov_base = (char *) call->out.data;
call->out_iov[0].iov_len = call->out.length;
subreq = tstream_writev_queue_send(call,
wrepl_conn->conn->event.ctx,
wrepl_conn->tstream,
wrepl_conn->send_queue,
call->out_iov, 1);
if (subreq == NULL) {
wreplsrv_terminate_in_connection(wrepl_conn, "wreplsrv_call_loop: "
"no memory for tstream_writev_queue_send");
return;
}
tevent_req_set_callback(subreq, wreplsrv_call_writev_done, call);
noreply:
/*
* The wrepl pdu's has the length as 4 byte (initial_read_size),
* provides the pdu length then.
*/
subreq = tstream_read_pdu_blob_send(wrepl_conn,
wrepl_conn->conn->event.ctx,
wrepl_conn->tstream,
4, /* initial_read_size */
packet_full_request_u32,
wrepl_conn);
if (subreq == NULL) {
wreplsrv_terminate_in_connection(wrepl_conn, "wreplsrv_call_loop: "
"no memory for tstream_read_pdu_blob_send");
return;
}
tevent_req_set_callback(subreq, wreplsrv_call_loop, wrepl_conn);
}
