#include "smbd/process_model.h"
#include "system/network.h"
#include "lib/socket/netif.h"
+#include "lib/tsocket/tsocket.h"
+#include "libcli/util/tstream.h"
#include "param/param.h"
void wreplsrv_terminate_in_connection(struct wreplsrv_in_connection *wreplconn, const char *reason)
stream_terminate_connection(wreplconn->conn, reason);
}
-static int terminate_after_send_destructor(struct wreplsrv_in_connection **tas)
-{
- wreplsrv_terminate_in_connection(*tas, "wreplsrv_in_connection: terminate_after_send");
- return 0;
-}
-
/*
receive some data on a WREPL connection
*/
-static NTSTATUS wreplsrv_recv_request(void *private_data, DATA_BLOB blob)
+static NTSTATUS wreplsrv_process(struct wreplsrv_in_connection *wrepl_conn,
+ struct wreplsrv_in_call **_call)
{
- struct wreplsrv_in_connection *wreplconn = talloc_get_type(private_data, struct wreplsrv_in_connection);
- struct wreplsrv_in_call *call;
- DATA_BLOB packet_in_blob;
- DATA_BLOB packet_out_blob;
struct wrepl_wrap packet_out_wrap;
NTSTATUS status;
enum ndr_err_code ndr_err;
+ struct wreplsrv_in_call *call = *_call;
- call = talloc_zero(wreplconn, struct wreplsrv_in_call);
- NT_STATUS_HAVE_NO_MEMORY(call);
- call->wreplconn = wreplconn;
- talloc_steal(call, blob.data);
-
- packet_in_blob.data = blob.data + 4;
- packet_in_blob.length = blob.length - 4;
-
- ndr_err = ndr_pull_struct_blob(&packet_in_blob, call,
- lp_iconv_convenience(wreplconn->service->task->lp_ctx),
+ ndr_err = ndr_pull_struct_blob(&call->in, call,
+ lp_iconv_convenience(wrepl_conn->service->task->lp_ctx),
&call->req_packet,
(ndr_pull_flags_fn_t)ndr_pull_wrepl_packet);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
}
if (DEBUGLVL(10)) {
- DEBUG(10,("Received WINS-Replication packet of length %u\n",
- (unsigned)packet_in_blob.length + 4));
+ DEBUG(10,("Received WINS-Replication packet of length %u\n",
+ (unsigned int) call->in.length + 4));
NDR_PRINT_DEBUG(wrepl_packet, &call->req_packet);
}
if (!NT_STATUS_IS_OK(status)) {
/* w2k just ignores invalid packets, so we do */
DEBUG(10,("Received WINS-Replication packet was invalid, we just ignore it\n"));
- talloc_free(call);
+ TALLOC_FREE(call);
+ *_call = NULL;
return NT_STATUS_OK;
}
/* and now encode the reply */
packet_out_wrap.packet = call->rep_packet;
- ndr_err = ndr_push_struct_blob(&packet_out_blob, call,
- lp_iconv_convenience(wreplconn->service->task->lp_ctx),
+ ndr_err = ndr_push_struct_blob(&call->out, call,
+ lp_iconv_convenience(wrepl_conn->service->task->lp_ctx),
&packet_out_wrap,
- (ndr_push_flags_fn_t)ndr_push_wrepl_wrap);
+ (ndr_push_flags_fn_t) ndr_push_wrepl_wrap);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
return ndr_map_error2ntstatus(ndr_err);
}
if (DEBUGLVL(10)) {
- DEBUG(10,("Sending WINS-Replication packet of length %d\n", (int)packet_out_blob.length));
+ DEBUG(10,("Sending WINS-Replication packet of length %u\n",
+ (unsigned int) call->out.length));
NDR_PRINT_DEBUG(wrepl_packet, &call->rep_packet);
}
- if (call->terminate_after_send) {
- struct wreplsrv_in_connection **tas;
- tas = talloc(packet_out_blob.data, struct wreplsrv_in_connection *);
- NT_STATUS_HAVE_NO_MEMORY(tas);
- *tas = wreplconn;
- talloc_set_destructor(tas, terminate_after_send_destructor);
- }
-
- status = packet_send(wreplconn->packet, packet_out_blob);
- NT_STATUS_NOT_OK_RETURN(status);
-
- talloc_free(call);
return NT_STATUS_OK;
}
-/*
- called when the socket becomes readable
-*/
-static void wreplsrv_recv(struct stream_connection *conn, uint16_t flags)
-{
- struct wreplsrv_in_connection *wreplconn = talloc_get_type(conn->private_data,
- struct wreplsrv_in_connection);
-
- packet_recv(wreplconn->packet);
-}
-
-/*
- called when the socket becomes writable
-*/
-static void wreplsrv_send(struct stream_connection *conn, uint16_t flags)
-{
- struct wreplsrv_in_connection *wreplconn = talloc_get_type(conn->private_data,
- struct wreplsrv_in_connection);
- packet_queue_run(wreplconn->packet);
-}
-
-/*
- handle socket recv errors
-*/
-static void wreplsrv_recv_error(void *private_data, NTSTATUS status)
-{
- struct wreplsrv_in_connection *wreplconn = talloc_get_type(private_data,
- struct wreplsrv_in_connection);
- wreplsrv_terminate_in_connection(wreplconn, nt_errstr(status));
-}
+static void wreplsrv_call_loop(struct tevent_req *subreq);
/*
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 *wreplconn;
+ struct wreplsrv_in_connection *wrepl_conn;
struct socket_address *peer_ip;
+ struct tevent_req *subreq;
+ int rc, fd;
- wreplconn = talloc_zero(conn, struct wreplsrv_in_connection);
- if (!wreplconn) {
- stream_terminate_connection(conn, "wreplsrv_accept: out of memory");
+ wrepl_conn = talloc_zero(conn, struct wreplsrv_in_connection);
+ if (wrepl_conn == NULL) {
+ stream_terminate_connection(conn,
+ "wreplsrv_accept: out of memory");
return;
}
- wreplconn->packet = packet_init(wreplconn);
- if (!wreplconn->packet) {
- wreplsrv_terminate_in_connection(wreplconn, "wreplsrv_accept: out of memory");
+ 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;
}
- packet_set_private(wreplconn->packet, wreplconn);
- packet_set_socket(wreplconn->packet, conn->socket);
- packet_set_callback(wreplconn->packet, wreplsrv_recv_request);
- packet_set_full_request(wreplconn->packet, packet_full_request_u32);
- packet_set_error_handler(wreplconn->packet, wreplsrv_recv_error);
- packet_set_event_context(wreplconn->packet, conn->event.ctx);
- packet_set_fde(wreplconn->packet, conn->event.fde);
- packet_set_serialise(wreplconn->packet);
-
- wreplconn->conn = conn;
- wreplconn->service = service;
-
- peer_ip = socket_get_peer_addr(conn->socket, wreplconn);
- if (!peer_ip) {
- wreplsrv_terminate_in_connection(wreplconn, "wreplsrv_accept: could not obtain peer IP from kernel");
+
+ TALLOC_FREE(conn->event.fde);
+
+ /*
+ * Clone the fd that the connection isn't closed if we create a client
+ * connection.
+ */
+ fd = dup(socket_get_fd(conn->socket));
+ if (fd == -1) {
+ char *reason;
+
+ reason = talloc_asprintf(conn,
+ "wrepl_accept: failed to duplicate the file descriptor - %s",
+ strerror(errno));
+ if (reason == NULL) {
+ reason = strerror(errno);
+ }
+ stream_terminate_connection(conn, reason);
+ }
+ rc = tstream_bsd_existing_socket(wrepl_conn,
+ fd,
+ &wrepl_conn->tstream);
+ if (rc < 0) {
+ stream_terminate_connection(conn,
+ "wrepl_accept: out of memory");
return;
}
- wreplconn->partner = wreplsrv_find_partner(service, peer_ip->addr);
+ wrepl_conn->conn = conn;
+ wrepl_conn->service = service;
- conn->private_data = wreplconn;
+ peer_ip = socket_get_peer_addr(conn->socket, wrepl_conn);
+ if (peer_ip == NULL) {
+ wreplsrv_terminate_in_connection(wrepl_conn, "wreplsrv_accept: "
+ "could not obtain peer IP from kernel");
+ return;
+ }
+ wrepl_conn->partner = wreplsrv_find_partner(service, peer_ip->addr);
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);
+}
+
+static void wreplsrv_call_writev_done(struct tevent_req *subreq);
+
+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 = 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);
+}
+
+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 on a tcp recv
+*/
+static void wreplsrv_recv(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_recv: called"));
+ wreplsrv_terminate_in_connection(wrepl_conn, "wrepl_recv: called");
+}
+
+/*
+ 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 const struct stream_server_ops wreplsrv_stream_ops = {
*/
NTSTATUS wreplsrv_in_connection_merge(struct wreplsrv_partner *partner,
struct socket_context *sock,
- struct packet_context *packet,
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;
+ int rc;
/* within the wrepl task we want to be a single process, so
ask for the single process model ops and pass these to the
wrepl_in->service = service;
wrepl_in->partner = partner;
- status = stream_new_connection_merge(service->task->event_ctx, service->task->lp_ctx, model_ops,
- sock, &wreplsrv_stream_ops, service->task->msg_ctx,
- wrepl_in, &conn);
+ status = stream_new_connection_merge(service->task->event_ctx,
+ service->task->lp_ctx,
+ model_ops,
+ sock,
+ &wreplsrv_stream_ops,
+ service->task->msg_ctx,
+ wrepl_in,
+ &conn);
NT_STATUS_NOT_OK_RETURN(status);
/*
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;
+ }
+
+ TALLOC_FREE(conn->event.fde);
+
+ rc = tstream_bsd_existing_socket(wrepl_in,
+ socket_get_fd(sock),
+ &wrepl_in->tstream);
+ if (rc < 0) {
+ stream_terminate_connection(conn,
+ "wreplsrv_in_connection_merge: out of memory");
+ return NT_STATUS_NO_MEMORY;
+ }
+
/*
- * now update the packet handling callback,...
+ * The wrepl pdu's has the length as 4 byte (initial_read_size),
+ * packet_full_request_u32 provides the pdu length then.
*/
- wrepl_in->packet = talloc_steal(wrepl_in, packet);
- packet_set_private(wrepl_in->packet, wrepl_in);
- packet_set_socket(wrepl_in->packet, conn->socket);
- packet_set_callback(wrepl_in->packet, wreplsrv_recv_request);
- packet_set_full_request(wrepl_in->packet, packet_full_request_u32);
- packet_set_error_handler(wrepl_in->packet, wreplsrv_recv_error);
- packet_set_event_context(wrepl_in->packet, conn->event.ctx);
- packet_set_fde(wrepl_in->packet, conn->event.fde);
- packet_set_serialise(wrepl_in->packet);
+ 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;
}
git.samba.org / sfrench / samba-autobuild / .git / commitdiff