r26654: libcli/smb_composite: Rather than specifying each of the gazillion options...
[jelmer/samba4-debian.git] / source / libcli / raw / clitransport.c
index 6bf79ecfb0ef30f829a87ad20442f89f089e46d5..62c32d305845908c9780278bd6845b322bad8131 100644 (file)
@@ -7,7 +7,7 @@
    
    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 2 of the License, or
+   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,
    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, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "includes.h"
 #include "libcli/raw/libcliraw.h"
 #include "lib/socket/socket.h"
-#include "dlinklist.h"
+#include "lib/util/dlinklist.h"
 #include "lib/events/events.h"
 #include "lib/stream/packet.h"
+#include "librpc/gen_ndr/ndr_nbt.h"
+#include "param/param.h"
 
 
 /*
@@ -49,11 +50,9 @@ static void smbcli_transport_event_handler(struct event_context *ev,
 /*
   destroy a transport
  */
-static int transport_destructor(void *ptr)
+static int transport_destructor(struct smbcli_transport *transport)
 {
-       struct smbcli_transport *transport = ptr;
-
-       smbcli_transport_dead(transport);
+       smbcli_transport_dead(transport, NT_STATUS_LOCAL_DISCONNECT);
        return 0;
 }
 
@@ -64,7 +63,7 @@ static int transport_destructor(void *ptr)
 static void smbcli_transport_error(void *private, NTSTATUS status)
 {
        struct smbcli_transport *transport = talloc_get_type(private, struct smbcli_transport);
-       smbcli_transport_dead(transport);
+       smbcli_transport_dead(transport, status);
 }
 
 static NTSTATUS smbcli_transport_finish_recv(void *private, DATA_BLOB blob);
@@ -73,7 +72,9 @@ static NTSTATUS smbcli_transport_finish_recv(void *private, DATA_BLOB blob);
   create a transport structure based on an established socket
 */
 struct smbcli_transport *smbcli_transport_init(struct smbcli_socket *sock,
-                                              TALLOC_CTX *parent_ctx, BOOL primary)
+                                              TALLOC_CTX *parent_ctx, 
+                                              bool primary, 
+                                              struct smbcli_options *options)
 {
        struct smbcli_transport *transport;
 
@@ -86,11 +87,7 @@ struct smbcli_transport *smbcli_transport_init(struct smbcli_socket *sock,
                transport->socket = talloc_reference(transport, sock);
        }
        transport->negotiate.protocol = PROTOCOL_NT1;
-       transport->options.use_spnego = lp_use_spnego() && lp_nt_status_support();
-       transport->options.max_xmit = lp_max_xmit();
-       transport->options.max_mux = lp_maxmux();
-       transport->options.request_timeout = SMB_REQUEST_TIMEOUT;
-
+       transport->options = *options;
        transport->negotiate.max_xmit = transport->options.max_xmit;
 
        /* setup the stream -> packet parser */
@@ -105,6 +102,7 @@ struct smbcli_transport *smbcli_transport_init(struct smbcli_socket *sock,
        packet_set_full_request(transport->packet, packet_full_request_nbt);
        packet_set_error_handler(transport->packet, smbcli_transport_error);
        packet_set_event_context(transport->packet, transport->socket->event.ctx);
+       packet_set_nofree(transport->packet);
 
        smbcli_init_signing(transport);
 
@@ -114,14 +112,14 @@ struct smbcli_transport *smbcli_transport_init(struct smbcli_socket *sock,
           handles events up until we are connected */
        talloc_free(transport->socket->event.fde);
        transport->socket->event.fde = event_add_fd(transport->socket->event.ctx,
-                                                   transport->socket,
+                                                   transport->socket->sock,
                                                    socket_get_fd(transport->socket->sock),
                                                    EVENT_FD_READ,
                                                    smbcli_transport_event_handler,
                                                    transport);
 
-       packet_set_serialise(transport->packet, transport->socket->event.fde);
-
+       packet_set_fde(transport->packet, transport->socket->event.fde);
+       packet_set_serialise(transport->packet);
        talloc_set_destructor(transport, transport_destructor);
 
        return transport;
@@ -130,15 +128,22 @@ struct smbcli_transport *smbcli_transport_init(struct smbcli_socket *sock,
 /*
   mark the transport as dead
 */
-void smbcli_transport_dead(struct smbcli_transport *transport)
+void smbcli_transport_dead(struct smbcli_transport *transport, NTSTATUS status)
 {
        smbcli_sock_dead(transport->socket);
 
-       /* kill all pending receives */
-       while (transport->pending_recv) {
+       if (NT_STATUS_EQUAL(NT_STATUS_UNSUCCESSFUL, status)) {
+               status = NT_STATUS_UNEXPECTED_NETWORK_ERROR;
+       }
+
+       /* kill only the first pending receive - this is so that if
+        that async function frees the connection we don't die trying
+        to use old memory. The caller has to cope with only one
+        network error */
+       if (transport->pending_recv) {
                struct smbcli_request *req = transport->pending_recv;
                req->state = SMBCLI_REQUEST_ERROR;
-               req->status = NT_STATUS_NET_WRITE_FAULT;
+               req->status = status;
                DLIST_REMOVE(transport->pending_recv, req);
                if (req->async.fn) {
                        req->async.fn(req);
@@ -183,7 +188,7 @@ struct smbcli_request *smbcli_transport_connect_send(struct smbcli_transport *tr
        memcpy(p, calling_blob.data, calling_blob.length);
        p += calling_blob.length;
 
-       _smb_setlen(req->out.buffer, PTR_DIFF(p, req->out.buffer)-4);
+       _smb_setlen(req->out.buffer, PTR_DIFF(p, req->out.buffer) - NBT_HDR_SIZE);
        SCVAL(req->out.buffer,0,0x81);
 
        if (!smbcli_request_send(req)) {
@@ -253,7 +258,7 @@ NTSTATUS smbcli_transport_connect_recv(struct smbcli_request *req)
 /*
   send a session request (if needed)
 */
-BOOL smbcli_transport_connect(struct smbcli_transport *transport,
+bool smbcli_transport_connect(struct smbcli_transport *transport,
                              struct nbt_name *calling, 
                              struct nbt_name *called)
 {
@@ -261,7 +266,7 @@ BOOL smbcli_transport_connect(struct smbcli_transport *transport,
        NTSTATUS status;
 
        if (transport->socket->port == 445) {
-               return True;
+               return true;
        }
 
        req = smbcli_transport_connect_send(transport, 
@@ -346,7 +351,7 @@ static NTSTATUS smbcli_transport_finish_recv(void *private, DATA_BLOB blob)
        uint8_t *buffer, *hdr, *vwv;
        int len;
        uint16_t wct=0, mid = 0, op = 0;
-       struct smbcli_request *req;
+       struct smbcli_request *req = NULL;
 
        buffer = blob.data;
        len = blob.length;
@@ -355,7 +360,7 @@ static NTSTATUS smbcli_transport_finish_recv(void *private, DATA_BLOB blob)
        vwv = hdr + HDR_VWV;
 
        /* see if it could be an oplock break request */
-       if (handle_oplock_break(transport, len, hdr, vwv)) {
+       if (smbcli_handle_oplock_break(transport, len, hdr, vwv)) {
                talloc_free(buffer);
                return NT_STATUS_OK;
        }
@@ -390,6 +395,9 @@ static NTSTATUS smbcli_transport_finish_recv(void *private, DATA_BLOB blob)
                if (req->mid == mid) break;
        }
 
+       /* see if it's a ntcancel reply for the current MID */
+       req = smbcli_handle_ntcancel_reply(req, len, hdr);
+
        if (!req) {
                DEBUG(1,("Discarding unmatched reply with mid %d op %d\n", mid, op));
                goto error;
@@ -478,22 +486,27 @@ error:
        if (req) {
                DLIST_REMOVE(transport->pending_recv, req);
                req->state = SMBCLI_REQUEST_ERROR;
+               if (req->async.fn) {
+                       req->async.fn(req);
+               }
+       } else {
+               talloc_free(buffer);
        }
        return NT_STATUS_OK;
 }
 
 /*
   process some read/write requests that are pending
-  return False if the socket is dead
+  return false if the socket is dead
 */
-BOOL smbcli_transport_process(struct smbcli_transport *transport)
+bool smbcli_transport_process(struct smbcli_transport *transport)
 {
        NTSTATUS status;
        size_t npending;
 
        packet_queue_run(transport->packet);
        if (transport->socket->sock == NULL) {
-               return False;
+               return false;
        }
 
        status = socket_pending(transport->socket->sock, &npending);
@@ -501,9 +514,9 @@ BOOL smbcli_transport_process(struct smbcli_transport *transport)
                packet_recv(transport->packet);
        }
        if (transport->socket->sock == NULL) {
-               return False;
+               return false;
        }
-       return True;
+       return true;
 }
 
 /*
@@ -514,9 +527,6 @@ static void smbcli_timeout_handler(struct event_context *ev, struct timed_event
 {
        struct smbcli_request *req = talloc_get_type(private, struct smbcli_request);
 
-       if (req->state == SMBCLI_REQUEST_SEND) {
-               DLIST_REMOVE(req->transport->pending_send, req);
-       }
        if (req->state == SMBCLI_REQUEST_RECV) {
                DLIST_REMOVE(req->transport->pending_recv, req);
        }
@@ -531,12 +541,8 @@ static void smbcli_timeout_handler(struct event_context *ev, struct timed_event
 /*
   destroy a request
 */
-static int smbcli_request_destructor(void *ptr)
+static int smbcli_request_destructor(struct smbcli_request *req)
 {
-       struct smbcli_request *req = talloc_get_type(ptr, struct smbcli_request);
-       if (req->state == SMBCLI_REQUEST_SEND) {
-               DLIST_REMOVE(req->transport->pending_send, req);
-       }
        if (req->state == SMBCLI_REQUEST_RECV) {
                DLIST_REMOVE(req->transport->pending_recv, req);
        }
@@ -559,16 +565,6 @@ void smbcli_transport_send(struct smbcli_request *req)
                return;
        }
 
-       /* put it on the socket queue
-        * - as the buffer is a part of the smbcli_request struct
-        *   we need to reference it here, because packet_queue_run()
-        *   will call talloc_free() on it
-        */
-       if (!talloc_reference(req, req->out.buffer)) {
-               req->state = SMBCLI_REQUEST_ERROR;
-               req->status = NT_STATUS_NO_MEMORY;
-               return;
-       }
        blob = data_blob_const(req->out.buffer, req->out.size);
        status = packet_send(req->transport->packet, blob);
        if (!NT_STATUS_IS_OK(status)) {
@@ -595,3 +591,71 @@ void smbcli_transport_send(struct smbcli_request *req)
 
        talloc_set_destructor(req, smbcli_request_destructor);
 }
+
+
+/****************************************************************************
+ Send an SMBecho (async send)
+*****************************************************************************/
+struct smbcli_request *smb_raw_echo_send(struct smbcli_transport *transport,
+                                        struct smb_echo *p)
+{
+       struct smbcli_request *req;
+
+       req = smbcli_request_setup_transport(transport, SMBecho, 1, p->in.size);
+       if (!req) return NULL;
+
+       SSVAL(req->out.vwv, VWV(0), p->in.repeat_count);
+
+       memcpy(req->out.data, p->in.data, p->in.size);
+
+       ZERO_STRUCT(p->out);
+
+       if (!smbcli_request_send(req)) {
+               smbcli_request_destroy(req);
+               return NULL;
+       }
+
+       return req;
+}
+
+/****************************************************************************
+ raw echo interface (async recv)
+****************************************************************************/
+NTSTATUS smb_raw_echo_recv(struct smbcli_request *req, TALLOC_CTX *mem_ctx,
+                          struct smb_echo *p)
+{
+       if (!smbcli_request_receive(req) ||
+           smbcli_request_is_error(req)) {
+               goto failed;
+       }
+
+       SMBCLI_CHECK_WCT(req, 1);
+       p->out.count++;
+       p->out.sequence_number = SVAL(req->in.vwv, VWV(0));
+       p->out.size = req->in.data_size;
+       talloc_free(p->out.data);
+       p->out.data = talloc_array(mem_ctx, uint8_t, p->out.size);
+       NT_STATUS_HAVE_NO_MEMORY(p->out.data);
+
+       if (!smbcli_raw_pull_data(req, req->in.data, p->out.size, p->out.data)) {
+               req->status = NT_STATUS_BUFFER_TOO_SMALL;
+       }
+
+       if (p->out.count == p->in.repeat_count) {
+               return smbcli_request_destroy(req);
+       }
+
+       return NT_STATUS_OK;
+
+failed:
+       return smbcli_request_destroy(req);
+}
+
+/****************************************************************************
+ Send a echo (sync interface)
+*****************************************************************************/
+NTSTATUS smb_raw_echo(struct smbcli_transport *transport, struct smb_echo *p)
+{
+       struct smbcli_request *req = smb_raw_echo_send(transport, p);
+       return smbcli_request_simple_recv(req);
+}