*/
#include "includes.h"
-#include "dlinklist.h"
#include "lib/events/events.h"
-#include "librpc/gen_ndr/ndr_epmapper.h"
#include "lib/socket/socket.h"
-
-#define MIN_HDR_SIZE 16
-
-struct sock_blob {
- struct sock_blob *next, *prev;
- DATA_BLOB data;
-};
+#include "lib/stream/packet.h"
+#include "libcli/composite/composite.h"
/* transport private information used by general socket pipe transports */
struct sock_private {
- struct event_context *event_ctx;
struct fd_event *fde;
struct socket_context *sock;
char *server_name;
- uint32_t port;
- struct sock_blob *pending_send;
-
- struct {
- size_t received;
- DATA_BLOB data;
- uint_t pending_count;
- } recv;
+ struct packet_context *packet;
+ uint32_t pending_reads;
};
struct sock_private *sock = p->transport.private;
if (sock && sock->sock != NULL) {
+ talloc_free(sock->fde);
talloc_free(sock->sock);
sock->sock = NULL;
}
- /* wipe any pending sends */
- while (sock->pending_send) {
- struct sock_blob *blob = sock->pending_send;
- DLIST_REMOVE(sock->pending_send, blob);
- talloc_free(blob);
- }
-
if (!NT_STATUS_IS_OK(status)) {
p->transport.recv_data(p, NULL, status);
}
-
- talloc_free(sock->fde);
}
+
/*
- process send requests
+ handle socket recv errors
*/
-static void sock_process_send(struct dcerpc_connection *p)
+static void sock_error_handler(void *private, NTSTATUS status)
{
- struct sock_private *sock = p->transport.private;
+ struct dcerpc_connection *p = talloc_get_type(private,
+ struct dcerpc_connection);
+ sock_dead(p, status);
+}
- while (sock->pending_send) {
- struct sock_blob *blob = sock->pending_send;
- NTSTATUS status;
- size_t sent;
- status = socket_send(sock->sock, &blob->data, &sent, 0);
- if (NT_STATUS_IS_ERR(status)) {
- sock_dead(p, NT_STATUS_NET_WRITE_FAULT);
- break;
- }
- if (sent == 0) {
- break;
- }
-
- blob->data.data += sent;
- blob->data.length -= sent;
-
- if (blob->data.length != 0) {
- break;
- }
-
- DLIST_REMOVE(sock->pending_send, blob);
- talloc_free(blob);
+/*
+ check if a blob is a complete packet
+*/
+static NTSTATUS sock_complete_packet(void *private, DATA_BLOB blob, size_t *size)
+{
+ if (blob.length < DCERPC_FRAG_LEN_OFFSET+2) {
+ return STATUS_MORE_ENTRIES;
}
-
- if (sock->pending_send == NULL) {
- EVENT_FD_NOT_WRITEABLE(sock->fde);
+ *size = dcerpc_get_frag_length(&blob);
+ if (*size > blob.length) {
+ return STATUS_MORE_ENTRIES;
}
+ return NT_STATUS_OK;
}
-
/*
process recv requests
*/
-static void sock_process_recv(struct dcerpc_connection *p)
+static NTSTATUS sock_process_recv(void *private, DATA_BLOB blob)
{
+ struct dcerpc_connection *p = talloc_get_type(private,
+ struct dcerpc_connection);
struct sock_private *sock = p->transport.private;
- NTSTATUS status;
- size_t nread;
-
- if (sock->recv.data.data == NULL) {
- sock->recv.data = data_blob_talloc(sock, NULL, MIN_HDR_SIZE);
- }
-
- /* read in the base header to get the fragment length */
- if (sock->recv.received < MIN_HDR_SIZE) {
- uint32_t frag_length;
-
- status = socket_recv(sock->sock,
- sock->recv.data.data + sock->recv.received,
- MIN_HDR_SIZE - sock->recv.received,
- &nread, 0);
- if (NT_STATUS_IS_ERR(status)) {
- sock_dead(p, NT_STATUS_NET_WRITE_FAULT);
- return;
- }
- if (nread == 0) {
- return;
- }
-
- sock->recv.received += nread;
-
- if (sock->recv.received != MIN_HDR_SIZE) {
- return;
- }
- frag_length = dcerpc_get_frag_length(&sock->recv.data);
-
- sock->recv.data.data = talloc_realloc(sock, sock->recv.data.data,
- uint8_t, frag_length);
- if (sock->recv.data.data == NULL) {
- sock_dead(p, NT_STATUS_NO_MEMORY);
- return;
- }
- sock->recv.data.length = frag_length;
- }
-
- /* read in the rest of the packet */
- status = socket_recv(sock->sock,
- sock->recv.data.data + sock->recv.received,
- sock->recv.data.length - sock->recv.received,
- &nread, 0);
- if (NT_STATUS_IS_ERR(status)) {
- sock_dead(p, NT_STATUS_NET_WRITE_FAULT);
- return;
- }
- if (nread == 0) {
- return;
- }
- sock->recv.received += nread;
-
- if (sock->recv.received != sock->recv.data.length) {
- return;
- }
-
- /* we have a full packet */
- p->transport.recv_data(p, &sock->recv.data, NT_STATUS_OK);
- talloc_free(sock->recv.data.data);
- sock->recv.data = data_blob(NULL, 0);
- sock->recv.received = 0;
- sock->recv.pending_count--;
- if (sock->recv.pending_count == 0) {
- EVENT_FD_NOT_READABLE(sock->fde);
+ sock->pending_reads--;
+ if (sock->pending_reads == 0) {
+ packet_recv_disable(sock->packet);
}
+ p->transport.recv_data(p, &blob, NT_STATUS_OK);
+ return NT_STATUS_OK;
}
/*
static void sock_io_handler(struct event_context *ev, struct fd_event *fde,
uint16_t flags, void *private)
{
- struct dcerpc_connection *p = talloc_get_type(private, struct dcerpc_connection);
+ struct dcerpc_connection *p = talloc_get_type(private,
+ struct dcerpc_connection);
struct sock_private *sock = p->transport.private;
if (flags & EVENT_FD_WRITE) {
- sock_process_send(p);
+ packet_queue_run(sock->packet);
return;
}
}
if (flags & EVENT_FD_READ) {
- sock_process_recv(p);
+ packet_recv(sock->packet);
}
}
/*
- initiate a read request
+ initiate a read request - not needed for dcerpc sockets
*/
static NTSTATUS sock_send_read(struct dcerpc_connection *p)
{
struct sock_private *sock = p->transport.private;
-
- sock->recv.pending_count++;
- if (sock->recv.pending_count == 1) {
- EVENT_FD_READABLE(sock->fde);
+ sock->pending_reads++;
+ if (sock->pending_reads == 1) {
+ packet_recv_enable(sock->packet);
}
return NT_STATUS_OK;
}
/*
send an initial pdu in a multi-pdu sequence
*/
-static NTSTATUS sock_send_request(struct dcerpc_connection *p, DATA_BLOB *data, BOOL trigger_read)
+static NTSTATUS sock_send_request(struct dcerpc_connection *p, DATA_BLOB *data,
+ BOOL trigger_read)
{
struct sock_private *sock = p->transport.private;
- struct sock_blob *blob;
+ DATA_BLOB blob;
+ NTSTATUS status;
if (sock->sock == NULL) {
return NT_STATUS_CONNECTION_DISCONNECTED;
}
- blob = talloc(sock, struct sock_blob);
- if (blob == NULL) {
+ blob = data_blob_talloc(sock->packet, data->data, data->length);
+ if (blob.data == NULL) {
return NT_STATUS_NO_MEMORY;
}
- blob->data = data_blob_talloc(blob, data->data, data->length);
- if (blob->data.data == NULL) {
- talloc_free(blob);
- return NT_STATUS_NO_MEMORY;
+ status = packet_send(sock->packet, blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
}
- DLIST_ADD_END(sock->pending_send, blob, struct sock_blob *);
-
- EVENT_FD_WRITEABLE(sock->fde);
-
if (trigger_read) {
sock_send_read(p);
}
return NT_STATUS_OK;
}
-/*
- return the event context so the caller can process asynchronously
-*/
-static struct event_context *sock_event_context(struct dcerpc_connection *p)
-{
- struct sock_private *sock = p->transport.private;
-
- return sock->event_ctx;
-}
-
/*
shutdown sock pipe connection
*/
static NTSTATUS sock_shutdown_pipe(struct dcerpc_connection *p)
{
- sock_dead(p, NT_STATUS_OK);
+ struct sock_private *sock = p->transport.private;
+
+ if (sock && sock->sock) {
+ sock_dead(p, NT_STATUS_OK);
+ }
return NT_STATUS_OK;
}
return sock->server_name;
}
-/*
- open a rpc connection using the generic socket library
-*/
-static NTSTATUS dcerpc_pipe_open_socket(struct dcerpc_connection *c,
- const char *server,
- uint32_t port,
- const char *type,
- enum dcerpc_transport_t transport)
-{
- struct sock_private *sock;
- struct socket_context *socket_ctx;
- NTSTATUS status;
- sock = talloc(c, struct sock_private);
- if (!sock) {
- return NT_STATUS_NO_MEMORY;
- }
+struct pipe_open_socket_state {
+ struct dcerpc_connection *conn;
+ struct socket_context *socket_ctx;
+ struct sock_private *sock;
+ const char *server;
+ uint32_t port;
+ enum dcerpc_transport_t transport;
+};
- status = socket_create(type, SOCKET_TYPE_STREAM, &socket_ctx, 0);
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(sock);
- return status;
- }
- talloc_steal(sock, socket_ctx);
- status = socket_connect(socket_ctx, NULL, 0, server, port, 0);
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(sock);
- return status;
+static void continue_socket_connect(struct composite_context *ctx)
+{
+ struct dcerpc_connection *conn;
+ struct sock_private *sock;
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct pipe_open_socket_state *s = talloc_get_type(c->private_data,
+ struct pipe_open_socket_state);
+
+ /* make it easier to write a function calls */
+ conn = s->conn;
+ sock = s->sock;
+
+ c->status = socket_connect_recv(ctx);
+ if (!NT_STATUS_IS_OK(c->status)) {
+ DEBUG(0, ("Failed to connect host %s on port %d - %s\n", s->server, s->port,
+ nt_errstr(c->status)));
+ composite_error(c, c->status);
+ return;
}
/*
fill in the transport methods
*/
- c->transport.transport = transport;
- c->transport.private = NULL;
+ conn->transport.transport = s->transport;
+ conn->transport.private = NULL;
+
+ conn->transport.send_request = sock_send_request;
+ conn->transport.send_read = sock_send_read;
+ conn->transport.recv_data = NULL;
+
+ conn->transport.shutdown_pipe = sock_shutdown_pipe;
+ conn->transport.peer_name = sock_peer_name;
- c->transport.send_request = sock_send_request;
- c->transport.send_read = sock_send_read;
- c->transport.event_context = sock_event_context;
- c->transport.recv_data = NULL;
+ sock->sock = s->socket_ctx;
+ sock->pending_reads = 0;
+ sock->server_name = strupper_talloc(sock, s->server);
- c->transport.shutdown_pipe = sock_shutdown_pipe;
- c->transport.peer_name = sock_peer_name;
+ sock->fde = event_add_fd(conn->event_ctx, sock->sock, socket_get_fd(sock->sock),
+ 0, sock_io_handler, conn);
- sock->sock = socket_ctx;
- sock->server_name = talloc_strdup(sock, server);
- sock->event_ctx = event_context_init(sock);
- sock->pending_send = NULL;
- sock->recv.received = 0;
- sock->recv.data = data_blob(NULL, 0);
- sock->recv.pending_count = 0;
+ conn->transport.private = sock;
- sock->fde = event_add_fd(sock->event_ctx, sock, socket_get_fd(sock->sock),
- 0, sock_io_handler, c);
+ sock->packet = packet_init(sock);
+ if (sock->packet == NULL) {
+ composite_error(c, NT_STATUS_NO_MEMORY);
+ talloc_free(sock);
+ return;
+ }
- c->transport.private = sock;
+ packet_set_private(sock->packet, conn);
+ packet_set_socket(sock->packet, sock->sock);
+ packet_set_callback(sock->packet, sock_process_recv);
+ packet_set_full_request(sock->packet, sock_complete_packet);
+ packet_set_error_handler(sock->packet, sock_error_handler);
+ packet_set_event_context(sock->packet, conn->event_ctx);
+ packet_set_fde(sock->packet, sock->fde);
+ packet_set_serialise(sock->packet);
+ packet_recv_disable(sock->packet);
+ packet_set_initial_read(sock->packet, 16);
/* ensure we don't get SIGPIPE */
BlockSignals(True,SIGPIPE);
- return NT_STATUS_OK;
+ composite_done(c);
}
+
+struct composite_context *dcerpc_pipe_open_socket_send(TALLOC_CTX *mem_ctx,
+ struct dcerpc_connection *cn,
+ const char *server,
+ uint32_t port,
+ const char *type,
+ enum dcerpc_transport_t transport)
+{
+ NTSTATUS status;
+ struct composite_context *c;
+ struct pipe_open_socket_state *s;
+ struct composite_context *conn_req;
+
+ c = talloc_zero(mem_ctx, struct composite_context);
+ if (c == NULL) return NULL;
+
+ s = talloc_zero(c, struct pipe_open_socket_state);
+ if (s == NULL) {
+ composite_error(c, NT_STATUS_NO_MEMORY);
+ goto done;
+ }
+
+ c->state = COMPOSITE_STATE_IN_PROGRESS;
+ c->private_data = s;
+ c->event_ctx = cn->event_ctx;
+
+ s->conn = cn;
+ s->transport = transport;
+ s->port = port;
+ s->server = talloc_strdup(c, server);
+ if (s->server == NULL) {
+ composite_error(c, NT_STATUS_NO_MEMORY);
+ goto done;
+ }
+
+ s->sock = talloc(cn, struct sock_private);
+ if (s->sock == NULL) {
+ composite_error(c, NT_STATUS_NO_MEMORY);
+ goto done;
+ }
+
+ status = socket_create(type, SOCKET_TYPE_STREAM, &s->socket_ctx, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ composite_error(c, status);
+ talloc_free(s->sock);
+ goto done;
+ }
+ talloc_steal(s->sock, s->socket_ctx);
+
+ conn_req = socket_connect_send(s->socket_ctx, NULL, 0, s->server, s->port, 0, c->event_ctx);
+ if (conn_req == NULL) {
+ composite_error(c, NT_STATUS_NO_MEMORY);
+ goto done;
+ }
+
+ composite_continue(c, conn_req, continue_socket_connect, c);
+
+done:
+ return c;
+}
+
+
+NTSTATUS dcerpc_pipe_open_socket_recv(struct composite_context *c)
+{
+ NTSTATUS status = composite_wait(c);
+
+ talloc_free(c);
+ return status;
+}
+
+/*
+ open a rpc connection using the generic socket library
+*/
+NTSTATUS dcerpc_pipe_open_socket(struct dcerpc_connection *conn,
+ const char *server,
+ uint32_t port,
+ const char *type,
+ enum dcerpc_transport_t transport)
+{
+ struct composite_context *c;
+
+ c = dcerpc_pipe_open_socket_send(conn, conn, server, port,
+ type, transport);
+ return dcerpc_pipe_open_socket_recv(c);
+}
+
+
/*
open a rpc connection using tcp
*/
git.samba.org / sfrench / samba-autobuild / .git / blobdiff