s3-netlogon: remove init_netr_SamInfo functions.
[metze/samba/wip.git] / source3 / rpc_server / srv_pipe_hnd.c
index e574f0387dd4742ed6398b9cf63fc57064481101..2f3d7632b065aad0a0e99b486ca036d9af495722 100644 (file)
@@ -28,7 +28,6 @@
 static int pipes_open;
 
 static pipes_struct *InternalPipes;
-static struct bitmap *bmap;
 
 /* TODO
  * the following prototypes are declared here to avoid
@@ -56,18 +55,6 @@ pipes_struct *get_next_internal_pipe(pipes_struct *p)
        return p->next;
 }
 
-/****************************************************************************
- Initialise pipe handle states.
-****************************************************************************/
-
-void init_rpc_pipe_hnd(void)
-{
-       bmap = bitmap_allocate(MAX_OPEN_PIPES);
-       if (!bmap) {
-               exit_server("out of memory in init_rpc_pipe_hnd");
-       }
-}
-
 /****************************************************************************
  Initialise an outgoing packet.
 ****************************************************************************/
@@ -78,10 +65,9 @@ static bool pipe_init_outgoing_data(pipes_struct *p)
 
        /* Reset the offset counters. */
        o_data->data_sent_length = 0;
-       o_data->current_pdu_len = 0;
        o_data->current_pdu_sent = 0;
 
-       memset(o_data->current_pdu, '\0', sizeof(o_data->current_pdu));
+       prs_mem_free(&o_data->frag);
 
        /* Free any memory in the current return data buffer. */
        prs_mem_free(&o_data->rdata);
@@ -90,7 +76,7 @@ static bool pipe_init_outgoing_data(pipes_struct *p)
         * Initialize the outgoing RPC data buffer.
         * we will use this as the raw data area for replying to rpc requests.
         */     
-       if(!prs_init(&o_data->rdata, RPC_MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) {
+       if(!prs_init(&o_data->rdata, 128, p->mem_ctx, MARSHALL)) {
                DEBUG(0,("pipe_init_outgoing_data: malloc fail.\n"));
                return False;
        }
@@ -103,13 +89,14 @@ static bool pipe_init_outgoing_data(pipes_struct *p)
 ****************************************************************************/
 
 static struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
-                                                    const char *pipe_name,
+                                                    const struct ndr_syntax_id *syntax,
                                                     const char *client_address,
                                                     struct auth_serversupplied_info *server_info)
 {
        pipes_struct *p;
 
-       DEBUG(4,("Create pipe requested %s\n", pipe_name));
+       DEBUG(4,("Create pipe requested %s\n",
+                get_pipe_name_from_iface(syntax)));
 
        p = TALLOC_ZERO_P(mem_ctx, struct pipes_struct);
 
@@ -118,13 +105,15 @@ static struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
                return NULL;
        }
 
-       if ((p->mem_ctx = talloc_init("pipe %s %p", pipe_name, p)) == NULL) {
+       if ((p->mem_ctx = talloc_init("pipe %s %p",
+                                     get_pipe_name_from_iface(syntax),
+                                     p)) == NULL) {
                DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
                TALLOC_FREE(p);
                return NULL;
        }
 
-       if (!init_pipe_handle_list(p, pipe_name)) {
+       if (!init_pipe_handle_list(p, syntax)) {
                DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
                talloc_destroy(p->mem_ctx);
                TALLOC_FREE(p);
@@ -138,7 +127,7 @@ static struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
         * change the type to UNMARSALLING before processing the stream.
         */
 
-       if(!prs_init(&p->in_data.data, RPC_MAX_PDU_FRAG_LEN, p->mem_ctx, MARSHALL)) {
+       if(!prs_init(&p->in_data.data, 128, p->mem_ctx, MARSHALL)) {
                DEBUG(0,("open_rpc_pipe_p: malloc fail for in_data struct.\n"));
                talloc_destroy(p->mem_ctx);
                close_policy_by_pipe(p);
@@ -165,11 +154,11 @@ static struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
         * Initialize the outgoing RPC data buffer with no memory.
         */     
        prs_init_empty(&p->out_data.rdata, p->mem_ctx, MARSHALL);
-       
-       fstrcpy(p->name, pipe_name);
-       
+
+       p->syntax = *syntax;
+
        DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n",
-                pipe_name, pipes_open));
+                get_pipe_name_from_iface(syntax), pipes_open));
 
        talloc_set_destructor(p, close_internal_rpc_pipe_hnd);
 
@@ -187,7 +176,7 @@ static void set_incoming_fault(pipes_struct *p)
        p->in_data.pdu_received_len = 0;
        p->fault_state = True;
        DEBUG(10, ("set_incoming_fault: Setting fault state on pipe %s\n",
-                  p->name));
+                  get_pipe_name_from_iface(&p->syntax)));
 }
 
 /****************************************************************************
@@ -202,6 +191,15 @@ static ssize_t fill_rpc_header(pipes_struct *p, char *data, size_t data_to_copy)
                        (unsigned int)data_to_copy, (unsigned int)len_needed_to_complete_hdr,
                        (unsigned int)p->in_data.pdu_received_len ));
 
+       if (p->in_data.current_in_pdu == NULL) {
+               p->in_data.current_in_pdu = talloc_array(p, uint8_t,
+                                                        RPC_HEADER_LEN);
+       }
+       if (p->in_data.current_in_pdu == NULL) {
+               DEBUG(0, ("talloc failed\n"));
+               return -1;
+       }
+
        memcpy((char *)&p->in_data.current_in_pdu[p->in_data.pdu_received_len], data, len_needed_to_complete_hdr);
        p->in_data.pdu_received_len += len_needed_to_complete_hdr;
 
@@ -322,6 +320,14 @@ static ssize_t unmarshall_rpc_header(pipes_struct *p)
 
        prs_mem_free(&rpc_in);
 
+       p->in_data.current_in_pdu = TALLOC_REALLOC_ARRAY(
+               p, p->in_data.current_in_pdu, uint8_t, p->hdr.frag_len);
+       if (p->in_data.current_in_pdu == NULL) {
+               DEBUG(0, ("talloc failed\n"));
+               set_incoming_fault(p);
+               return -1;
+       }
+
        return 0; /* No extra data processed. */
 }
 
@@ -337,7 +343,8 @@ static void free_pipe_context(pipes_struct *p)
                         "%lu\n", (unsigned long)talloc_total_size(p->mem_ctx) ));
                talloc_free_children(p->mem_ctx);
        } else {
-               p->mem_ctx = talloc_init("pipe %s %p", p->name, p);
+               p->mem_ctx = talloc_init(
+                       "pipe %s %p", get_pipe_name_from_iface(&p->syntax), p);
                if (p->mem_ctx == NULL) {
                        p->fault_state = True;
                }
@@ -419,7 +426,7 @@ static bool process_request_pdu(pipes_struct *p, prs_struct *rpc_in_p)
         * will not fit in the initial buffer of size 0x1068   --jerry 22/01/2002
         */
        
-       if(prs_offset(&p->in_data.data) + data_len > 15*1024*1024) {
+       if(prs_offset(&p->in_data.data) + data_len > MAX_RPC_DATA_SIZE) {
                DEBUG(0,("process_request_pdu: rpc data buffer too large (%u) + (%u)\n",
                                (unsigned int)prs_data_size(&p->in_data.data), (unsigned int)data_len ));
                set_incoming_fault(p);
@@ -505,7 +512,7 @@ static void process_complete_pdu(pipes_struct *p)
 
        if(p->fault_state) {
                DEBUG(10,("process_complete_pdu: pipe %s in fault state.\n",
-                       p->name ));
+                        get_pipe_name_from_iface(&p->syntax)));
                set_incoming_fault(p);
                setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
                return;
@@ -533,12 +540,13 @@ static void process_complete_pdu(pipes_struct *p)
 
                case RPC_PING: /* CL request - ignore... */
                        DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n",
-                               (unsigned int)p->hdr.pkt_type, p->name));
+                               (unsigned int)p->hdr.pkt_type,
+                               get_pipe_name_from_iface(&p->syntax)));
                        break;
 
                case RPC_RESPONSE: /* No responses here. */
                        DEBUG(0,("process_complete_pdu: Error. RPC_RESPONSE received from client on pipe %s.\n",
-                               p->name ));
+                               get_pipe_name_from_iface(&p->syntax)));
                        break;
 
                case RPC_FAULT:
@@ -550,7 +558,8 @@ static void process_complete_pdu(pipes_struct *p)
                case RPC_FACK:
                case RPC_CANCEL_ACK:
                        DEBUG(0,("process_complete_pdu: Error. Connectionless packet type %u received on pipe %s.\n",
-                               (unsigned int)p->hdr.pkt_type, p->name));
+                               (unsigned int)p->hdr.pkt_type,
+                               get_pipe_name_from_iface(&p->syntax)));
                        break;
 
                case RPC_BIND:
@@ -565,7 +574,8 @@ static void process_complete_pdu(pipes_struct *p)
                case RPC_BINDACK:
                case RPC_BINDNACK:
                        DEBUG(0,("process_complete_pdu: Error. RPC_BINDACK/RPC_BINDNACK packet type %u received on pipe %s.\n",
-                               (unsigned int)p->hdr.pkt_type, p->name));
+                               (unsigned int)p->hdr.pkt_type,
+                               get_pipe_name_from_iface(&p->syntax)));
                        break;
 
 
@@ -580,7 +590,7 @@ static void process_complete_pdu(pipes_struct *p)
 
                case RPC_ALTCONTRESP:
                        DEBUG(0,("process_complete_pdu: Error. RPC_ALTCONTRESP on pipe %s: Should only be server -> client.\n",
-                               p->name));
+                               get_pipe_name_from_iface(&p->syntax)));
                        break;
 
                case RPC_AUTH3:
@@ -594,7 +604,7 @@ static void process_complete_pdu(pipes_struct *p)
 
                case RPC_SHUTDOWN:
                        DEBUG(0,("process_complete_pdu: Error. RPC_SHUTDOWN on pipe %s: Should only be server -> client.\n",
-                               p->name));
+                               get_pipe_name_from_iface(&p->syntax)));
                        break;
 
                case RPC_CO_CANCEL:
@@ -632,7 +642,8 @@ static void process_complete_pdu(pipes_struct *p)
        prs_set_endian_data( &p->in_data.data, RPC_LITTLE_ENDIAN);
 
        if (!reply) {
-               DEBUG(3,("process_complete_pdu: DCE/RPC fault sent on pipe %s\n", p->pipe_srv_name));
+               DEBUG(3,("process_complete_pdu: DCE/RPC fault sent on "
+                        "pipe %s\n", get_pipe_name_from_iface(&p->syntax)));
                set_incoming_fault(p);
                setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
                prs_mem_free(&rpc_in);
@@ -640,6 +651,7 @@ static void process_complete_pdu(pipes_struct *p)
                /*
                 * Reset the lengths. We're ready for a new pdu.
                 */
+               TALLOC_FREE(p->in_data.current_in_pdu);
                p->in_data.pdu_needed_len = 0;
                p->in_data.pdu_received_len = 0;
        }
@@ -786,7 +798,8 @@ static ssize_t read_from_internal_pipe(struct pipes_struct *p, char *data, size_
                return -1;              
        }
 
-       DEBUG(6,(" name: %s len: %u\n", p->name, (unsigned int)n));
+       DEBUG(6,(" name: %s len: %u\n", get_pipe_name_from_iface(&p->syntax),
+                (unsigned int)n));
 
        /*
         * We cannot return more than one PDU length per
@@ -800,8 +813,10 @@ static ssize_t read_from_internal_pipe(struct pipes_struct *p, char *data, size_
         */
 
        if(n > RPC_MAX_PDU_FRAG_LEN) {
-                DEBUG(5,("read_from_pipe: too large read (%u) requested on \
-pipe %s. We can only service %d sized reads.\n", (unsigned int)n, p->name, RPC_MAX_PDU_FRAG_LEN ));
+                DEBUG(5,("read_from_pipe: too large read (%u) requested on "
+                        "pipe %s. We can only service %d sized reads.\n",
+                        (unsigned int)n, get_pipe_name_from_iface(&p->syntax),
+                        RPC_MAX_PDU_FRAG_LEN ));
                n = RPC_MAX_PDU_FRAG_LEN;
        }
 
@@ -813,14 +828,24 @@ pipe %s. We can only service %d sized reads.\n", (unsigned int)n, p->name, RPC_M
         * PDU.
         */
 
-       if((pdu_remaining = p->out_data.current_pdu_len - p->out_data.current_pdu_sent) > 0) {
+       pdu_remaining = prs_offset(&p->out_data.frag)
+               - p->out_data.current_pdu_sent;
+
+       if (pdu_remaining > 0) {
                data_returned = (ssize_t)MIN(n, pdu_remaining);
 
-               DEBUG(10,("read_from_pipe: %s: current_pdu_len = %u, current_pdu_sent = %u \
-returning %d bytes.\n", p->name, (unsigned int)p->out_data.current_pdu_len, 
-                       (unsigned int)p->out_data.current_pdu_sent, (int)data_returned));
+               DEBUG(10,("read_from_pipe: %s: current_pdu_len = %u, "
+                         "current_pdu_sent = %u returning %d bytes.\n",
+                         get_pipe_name_from_iface(&p->syntax),
+                         (unsigned int)prs_offset(&p->out_data.frag),
+                         (unsigned int)p->out_data.current_pdu_sent,
+                         (int)data_returned));
+
+               memcpy(data,
+                      prs_data_p(&p->out_data.frag)
+                      + p->out_data.current_pdu_sent,
+                      data_returned);
 
-               memcpy( data, &p->out_data.current_pdu[p->out_data.current_pdu_sent], (size_t)data_returned);
                p->out_data.current_pdu_sent += (uint32)data_returned;
                goto out;
        }
@@ -830,9 +855,11 @@ returning %d bytes.\n", p->name, (unsigned int)p->out_data.current_pdu_len,
         * may of course be zero if this is the first return fragment.
         */
 
-       DEBUG(10,("read_from_pipe: %s: fault_state = %d : data_sent_length \
-= %u, prs_offset(&p->out_data.rdata) = %u.\n",
-               p->name, (int)p->fault_state, (unsigned int)p->out_data.data_sent_length, (unsigned int)prs_offset(&p->out_data.rdata) ));
+       DEBUG(10,("read_from_pipe: %s: fault_state = %d : data_sent_length "
+                 "= %u, prs_offset(&p->out_data.rdata) = %u.\n",
+                 get_pipe_name_from_iface(&p->syntax), (int)p->fault_state,
+                 (unsigned int)p->out_data.data_sent_length,
+                 (unsigned int)prs_offset(&p->out_data.rdata) ));
 
        if(p->out_data.data_sent_length >= prs_offset(&p->out_data.rdata)) {
                /*
@@ -850,18 +877,19 @@ returning %d bytes.\n", p->name, (unsigned int)p->out_data.current_pdu_len,
         */
 
        if(!create_next_pdu(p)) {
-               DEBUG(0,("read_from_pipe: %s: create_next_pdu failed.\n", p->name));
+               DEBUG(0,("read_from_pipe: %s: create_next_pdu failed.\n",
+                        get_pipe_name_from_iface(&p->syntax)));
                return -1;
        }
 
-       data_returned = MIN(n, p->out_data.current_pdu_len);
+       data_returned = MIN(n, prs_offset(&p->out_data.frag));
 
-       memcpy( data, p->out_data.current_pdu, (size_t)data_returned);
+       memcpy( data, prs_data_p(&p->out_data.frag), (size_t)data_returned);
        p->out_data.current_pdu_sent += (uint32)data_returned;
 
   out:
+       (*is_data_outstanding) = prs_offset(&p->out_data.frag) > n;
 
-       (*is_data_outstanding) = p->out_data.current_pdu_len > n;
        return data_returned;
 }
 
@@ -876,6 +904,7 @@ static int close_internal_rpc_pipe_hnd(struct pipes_struct *p)
                return False;
        }
 
+       prs_mem_free(&p->out_data.frag);
        prs_mem_free(&p->out_data.rdata);
        prs_mem_free(&p->in_data.data);
 
@@ -914,7 +943,12 @@ bool fsp_is_np(struct files_struct *fsp)
 }
 
 struct np_proxy_state {
+       struct tevent_queue *read_queue;
+       struct tevent_queue *write_queue;
        int fd;
+
+       uint8_t *msg;
+       size_t sent;
 };
 
 static int np_proxy_state_destructor(struct np_proxy_state *state)
@@ -1068,6 +1102,17 @@ static struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
                goto fail;
        }
 
+       result->msg = NULL;
+
+       result->read_queue = tevent_queue_create(result, "np_read");
+       if (result->read_queue == NULL) {
+               goto fail;
+       }
+       result->write_queue = tevent_queue_create(result, "np_write");
+       if (result->write_queue == NULL) {
+               goto fail;
+       }
+
        return result;
 
  fail:
@@ -1075,142 +1120,599 @@ static struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
        return NULL;
 }
 
-NTSTATUS np_open(struct smb_request *smb_req, const char *name,
-                struct files_struct **pfsp)
+NTSTATUS np_open(TALLOC_CTX *mem_ctx, const char *name,
+                const char *client_address,
+                struct auth_serversupplied_info *server_info,
+                struct fake_file_handle **phandle)
 {
-       struct connection_struct *conn = smb_req->conn;
-       NTSTATUS status;
-       struct files_struct *fsp;
        const char **proxy_list;
+       struct fake_file_handle *handle;
 
-       proxy_list = lp_parm_string_list(SNUM(conn), "np", "proxy", NULL);
+       proxy_list = lp_parm_string_list(-1, "np", "proxy", NULL);
 
-       status = file_new(smb_req, conn, &fsp);
-       if (!NT_STATUS_IS_OK(status)) {
-               DEBUG(0, ("file_new failed: %s\n", nt_errstr(status)));
-               return status;
-       }
-
-       fsp->conn = conn;
-       fsp->fh->fd = -1;
-       fsp->vuid = smb_req->vuid;
-       fsp->can_lock = false;
-       fsp->access_mask = FILE_READ_DATA | FILE_WRITE_DATA;
-       string_set(&fsp->fsp_name, name);
-
-       fsp->fake_file_handle = talloc(NULL, struct fake_file_handle);
-       if (fsp->fake_file_handle == NULL) {
-               file_free(smb_req, fsp);
+       handle = talloc(mem_ctx, struct fake_file_handle);
+       if (handle == NULL) {
                return NT_STATUS_NO_MEMORY;
        }
 
        if ((proxy_list != NULL) && str_list_check_ci(proxy_list, name)) {
                struct np_proxy_state *p;
 
-               p = make_external_rpc_pipe_p(fsp->fake_file_handle, name,
-                                            conn->server_info);
+               p = make_external_rpc_pipe_p(handle, name, server_info);
 
-               fsp->fake_file_handle->type = FAKE_FILE_TYPE_NAMED_PIPE_PROXY;
-               fsp->fake_file_handle->private_data = p;
+               handle->type = FAKE_FILE_TYPE_NAMED_PIPE_PROXY;
+               handle->private_data = p;
        } else {
                struct pipes_struct *p;
+               struct ndr_syntax_id syntax;
 
-               if (!is_known_pipename(name)) {
-                       file_free(smb_req, fsp);
+               if (!is_known_pipename(name, &syntax)) {
+                       TALLOC_FREE(handle);
                        return NT_STATUS_OBJECT_NAME_NOT_FOUND;
                }
 
-               p = make_internal_rpc_pipe_p(fsp->fake_file_handle, name,
-                                            conn->client_address,
-                                            conn->server_info);
+               p = make_internal_rpc_pipe_p(handle, &syntax, client_address,
+                                            server_info);
 
-               fsp->fake_file_handle->type = FAKE_FILE_TYPE_NAMED_PIPE;
-               fsp->fake_file_handle->private_data = p;
+               handle->type = FAKE_FILE_TYPE_NAMED_PIPE;
+               handle->private_data = p;
        }
 
-       if (fsp->fake_file_handle->private_data == NULL) {
-               file_free(smb_req, fsp);
+       if (handle->private_data == NULL) {
+               TALLOC_FREE(handle);
                return NT_STATUS_PIPE_NOT_AVAILABLE;
        }
 
-       *pfsp = fsp;
+       *phandle = handle;
 
        return NT_STATUS_OK;
 }
 
-NTSTATUS np_write(struct files_struct *fsp, const uint8_t *data, size_t len,
-                 ssize_t *nwritten)
+struct np_write_state {
+       struct event_context *ev;
+       struct np_proxy_state *p;
+       struct iovec iov;
+       ssize_t nwritten;
+};
+
+static void np_write_done(struct tevent_req *subreq);
+
+struct tevent_req *np_write_send(TALLOC_CTX *mem_ctx, struct event_context *ev,
+                                struct fake_file_handle *handle,
+                                const uint8_t *data, size_t len)
 {
-       if (!fsp_is_np(fsp)) {
-               return NT_STATUS_INVALID_HANDLE;
-       }
+       struct tevent_req *req;
+       struct np_write_state *state;
+       NTSTATUS status;
 
-       DEBUG(6, ("np_write: %x name: %s len: %d\n", (int)fsp->fnum,
-                 fsp->fsp_name, (int)len));
+       DEBUG(6, ("np_write_send: len: %d\n", (int)len));
        dump_data(50, data, len);
 
-       switch (fsp->fake_file_handle->type) {
-       case FAKE_FILE_TYPE_NAMED_PIPE: {
+       req = tevent_req_create(mem_ctx, &state, struct np_write_state);
+       if (req == NULL) {
+               return NULL;
+       }
+
+       if (len == 0) {
+               state->nwritten = 0;
+               status = NT_STATUS_OK;
+               goto post_status;
+       }
+
+       if (handle->type == FAKE_FILE_TYPE_NAMED_PIPE) {
                struct pipes_struct *p = talloc_get_type_abort(
-                       fsp->fake_file_handle->private_data,
-                       struct pipes_struct);
-               *nwritten = write_to_internal_pipe(p, (char *)data, len);
-               break;
+                       handle->private_data, struct pipes_struct);
+
+               state->nwritten = write_to_internal_pipe(p, (char *)data, len);
+
+               status = (state->nwritten >= 0)
+                       ? NT_STATUS_OK : NT_STATUS_UNEXPECTED_IO_ERROR;
+               goto post_status;
        }
-       case FAKE_FILE_TYPE_NAMED_PIPE_PROXY: {
+
+       if (handle->type == FAKE_FILE_TYPE_NAMED_PIPE_PROXY) {
                struct np_proxy_state *p = talloc_get_type_abort(
-                       fsp->fake_file_handle->private_data,
-                       struct np_proxy_state);
-               *nwritten = write_data(p->fd, (char *)data, len);
-               break;
+                       handle->private_data, struct np_proxy_state);
+               struct tevent_req *subreq;
+
+               state->ev = ev;
+               state->p = p;
+               state->iov.iov_base = CONST_DISCARD(void *, data);
+               state->iov.iov_len = len;
+
+               subreq = writev_send(state, ev, p->write_queue, p->fd,
+                                    false, &state->iov, 1);
+               if (subreq == NULL) {
+                       goto fail;
+               }
+               tevent_req_set_callback(subreq, np_write_done, req);
+               return req;
+       }
+
+       status = NT_STATUS_INVALID_HANDLE;
+ post_status:
+       if (NT_STATUS_IS_OK(status)) {
+               tevent_req_done(req);
+       } else {
+               tevent_req_nterror(req, status);
        }
-       default:
-               return NT_STATUS_INVALID_HANDLE;
-               break;
+       return tevent_req_post(req, ev);
+ fail:
+       TALLOC_FREE(req);
+       return NULL;
+}
+
+static void np_write_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       struct np_write_state *state = tevent_req_data(
+               req, struct np_write_state);
+       ssize_t received;
+       int err;
+
+       received = writev_recv(subreq, &err);
+       if (received < 0) {
+               tevent_req_nterror(req, map_nt_error_from_unix(err));
+               return;
        }
+       state->nwritten = received;
+       tevent_req_done(req);
+}
 
-       return ((*nwritten) >= 0)
-               ? NT_STATUS_OK : NT_STATUS_UNEXPECTED_IO_ERROR;
+NTSTATUS np_write_recv(struct tevent_req *req, ssize_t *pnwritten)
+{
+       struct np_write_state *state = tevent_req_data(
+               req, struct np_write_state);
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       *pnwritten = state->nwritten;
+       return NT_STATUS_OK;
 }
 
-NTSTATUS np_read(struct files_struct *fsp, uint8_t *data, size_t len,
-                ssize_t *nread, bool *is_data_outstanding)
+static ssize_t rpc_frag_more_fn(uint8_t *buf, size_t buflen, void *priv)
 {
-       if (!fsp_is_np(fsp)) {
-               return NT_STATUS_INVALID_HANDLE;
+       prs_struct hdr_prs;
+       struct rpc_hdr_info hdr;
+       bool ret;
+
+       if (buflen > RPC_HEADER_LEN) {
+               return 0;
        }
+       prs_init_empty(&hdr_prs, talloc_tos(), UNMARSHALL);
+       prs_give_memory(&hdr_prs, (char *)buf, RPC_HEADER_LEN, false);
+       ret = smb_io_rpc_hdr("", &hdr, &hdr_prs, 0);
+       prs_mem_free(&hdr_prs);
 
-       switch (fsp->fake_file_handle->type) {
-       case FAKE_FILE_TYPE_NAMED_PIPE: {
+       if (!ret) {
+               return -1;
+       }
+
+       return (hdr.frag_len - RPC_HEADER_LEN);
+}
+
+struct np_read_state {
+       struct event_context *ev;
+       struct np_proxy_state *p;
+       uint8_t *data;
+       size_t len;
+
+       size_t nread;
+       bool is_data_outstanding;
+};
+
+static void np_read_trigger(struct tevent_req *req, void *private_data);
+static void np_read_done(struct tevent_req *subreq);
+
+struct tevent_req *np_read_send(TALLOC_CTX *mem_ctx, struct event_context *ev,
+                               struct fake_file_handle *handle,
+                               uint8_t *data, size_t len)
+{
+       struct tevent_req *req;
+       struct np_read_state *state;
+       NTSTATUS status;
+
+       req = tevent_req_create(mem_ctx, &state, struct np_read_state);
+       if (req == NULL) {
+               return NULL;
+       }
+
+       if (handle->type == FAKE_FILE_TYPE_NAMED_PIPE) {
                struct pipes_struct *p = talloc_get_type_abort(
-                       fsp->fake_file_handle->private_data,
-                       struct pipes_struct);
-               *nread = read_from_internal_pipe(p, (char *)data, len,
-                                                is_data_outstanding);
-               break;
+                       handle->private_data, struct pipes_struct);
+
+               state->nread = read_from_internal_pipe(
+                       p, (char *)data, len, &state->is_data_outstanding);
+
+               status = (state->nread >= 0)
+                       ? NT_STATUS_OK : NT_STATUS_UNEXPECTED_IO_ERROR;
+               goto post_status;
        }
-       case FAKE_FILE_TYPE_NAMED_PIPE_PROXY: {
+
+       if (handle->type == FAKE_FILE_TYPE_NAMED_PIPE_PROXY) {
                struct np_proxy_state *p = talloc_get_type_abort(
-                       fsp->fake_file_handle->private_data,
-                       struct np_proxy_state);
-               int available = 0;
+                       handle->private_data, struct np_proxy_state);
 
-               *nread = sys_read(p->fd, (char *)data, len);
+               if (p->msg != NULL) {
+                       size_t thistime;
 
-               /*
-                * We don't look at the ioctl result. We don't really care
-                * if there is data available, because this is racy anyway.
-                */
-               ioctl(p->fd, FIONREAD, &available);
-               *is_data_outstanding = (available > 0);
+                       thistime = MIN(talloc_get_size(p->msg) - p->sent,
+                                      len);
+
+                       memcpy(data, p->msg+p->sent, thistime);
+                       state->nread = thistime;
+                       p->sent += thistime;
+
+                       if (p->sent < talloc_get_size(p->msg)) {
+                               state->is_data_outstanding = true;
+                       } else {
+                               state->is_data_outstanding = false;
+                               TALLOC_FREE(p->msg);
+                       }
+                       status = NT_STATUS_OK;
+                       goto post_status;
+               }
+
+               state->ev = ev;
+               state->p = p;
+               state->data = data;
+               state->len = len;
+
+               if (!tevent_queue_add(p->read_queue, ev, req, np_read_trigger,
+                                     NULL)) {
+                       goto fail;
+               }
+               return req;
+       }
 
-               break;
+       status = NT_STATUS_INVALID_HANDLE;
+ post_status:
+       if (NT_STATUS_IS_OK(status)) {
+               tevent_req_done(req);
+       } else {
+               tevent_req_nterror(req, status);
        }
-       default:
-               return NT_STATUS_INVALID_HANDLE;
-               break;
+       return tevent_req_post(req, ev);
+ fail:
+       TALLOC_FREE(req);
+       return NULL;
+}
+
+static void np_read_trigger(struct tevent_req *req, void *private_data)
+{
+       struct np_read_state *state = tevent_req_data(
+               req, struct np_read_state);
+       struct tevent_req *subreq;
+
+       subreq = read_packet_send(state, state->ev, state->p->fd,
+                                 RPC_HEADER_LEN, rpc_frag_more_fn, NULL);
+       if (tevent_req_nomem(subreq, req)) {
+               return;
        }
+       tevent_req_set_callback(subreq, np_read_done, req);
+}
 
-       return ((*nread) >= 0)
-               ? NT_STATUS_OK : NT_STATUS_UNEXPECTED_IO_ERROR;
+static void np_read_done(struct tevent_req *subreq)
+{
+       struct tevent_req *req = tevent_req_callback_data(
+               subreq, struct tevent_req);
+       struct np_read_state *state = tevent_req_data(
+               req, struct np_read_state);
+       ssize_t received;
+       size_t thistime;
+       int err;
+
+       received = read_packet_recv(subreq, state->p, &state->p->msg, &err);
+       TALLOC_FREE(subreq);
+       if (received == -1) {
+               tevent_req_nterror(req, map_nt_error_from_unix(err));
+               return;
+       }
+
+       thistime = MIN(received, state->len);
+
+       memcpy(state->data, state->p->msg, thistime);
+       state->p->sent = thistime;
+       state->nread = thistime;
+
+       if (state->p->sent < received) {
+               state->is_data_outstanding = true;
+       } else {
+               TALLOC_FREE(state->p->msg);
+               state->is_data_outstanding = false;
+       }
+
+       tevent_req_done(req);
+       return;
+}
+
+NTSTATUS np_read_recv(struct tevent_req *req, ssize_t *nread,
+                     bool *is_data_outstanding)
+{
+       struct np_read_state *state = tevent_req_data(
+               req, struct np_read_state);
+       NTSTATUS status;
+
+       if (tevent_req_is_nterror(req, &status)) {
+               return status;
+       }
+       *nread = state->nread;
+       *is_data_outstanding = state->is_data_outstanding;
+       return NT_STATUS_OK;
+}
+
+/**
+ * Create a new RPC client context which uses a local dispatch function.
+ */
+NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
+                               const struct ndr_syntax_id *abstract_syntax,
+                               NTSTATUS (*dispatch) (struct rpc_pipe_client *cli,
+                                                     TALLOC_CTX *mem_ctx,
+                                                     const struct ndr_interface_table *table,
+                                                     uint32_t opnum, void *r),
+                               struct auth_serversupplied_info *serversupplied_info,
+                               struct rpc_pipe_client **presult)
+{
+       struct rpc_pipe_client *result;
+
+       result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
+       if (result == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       result->abstract_syntax = *abstract_syntax;
+       result->transfer_syntax = ndr_transfer_syntax;
+       result->dispatch = dispatch;
+
+       result->pipes_struct = make_internal_rpc_pipe_p(
+               result, abstract_syntax, "", serversupplied_info);
+       if (result->pipes_struct == NULL) {
+               TALLOC_FREE(result);
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       result->max_xmit_frag = -1;
+       result->max_recv_frag = -1;
+
+       *presult = result;
+       return NT_STATUS_OK;
+}
+
+/*******************************************************************
+ gets a domain user's groups from their already-calculated NT_USER_TOKEN
+ ********************************************************************/
+
+static NTSTATUS nt_token_to_group_list(TALLOC_CTX *mem_ctx,
+                                      const DOM_SID *domain_sid,
+                                      size_t num_sids,
+                                      const DOM_SID *sids,
+                                      int *numgroups,
+                                      struct samr_RidWithAttribute **pgids)
+{
+       int i;
+
+       *numgroups=0;
+       *pgids = NULL;
+
+       for (i=0; i<num_sids; i++) {
+               struct samr_RidWithAttribute gid;
+               if (!sid_peek_check_rid(domain_sid, &sids[i], &gid.rid)) {
+                       continue;
+               }
+               gid.attributes = (SE_GROUP_MANDATORY|SE_GROUP_ENABLED_BY_DEFAULT|
+                           SE_GROUP_ENABLED);
+               ADD_TO_ARRAY(mem_ctx, struct samr_RidWithAttribute,
+                            gid, pgids, numgroups);
+               if (*pgids == NULL) {
+                       return NT_STATUS_NO_MEMORY;
+               }
+       }
+       return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ inits a netr_SamBaseInfo structure from an auth_serversupplied_info.
+*****************************************************************************/
+
+static NTSTATUS serverinfo_to_SamInfo_base(TALLOC_CTX *mem_ctx,
+                                          struct auth_serversupplied_info *server_info,
+                                          uint8_t *pipe_session_key,
+                                          size_t pipe_session_key_len,
+                                          struct netr_SamBaseInfo *base)
+{
+       struct samu *sampw;
+       struct samr_RidWithAttribute *gids = NULL;
+       const DOM_SID *user_sid = NULL;
+       const DOM_SID *group_sid = NULL;
+       DOM_SID domain_sid;
+       uint32 user_rid, group_rid;
+       NTSTATUS status;
+
+       int num_gids = 0;
+       const char *my_name;
+
+       struct netr_UserSessionKey user_session_key;
+       struct netr_LMSessionKey lm_session_key;
+
+       NTTIME last_logon, last_logoff, acct_expiry, last_password_change;
+       NTTIME allow_password_change, force_password_change;
+       struct samr_RidWithAttributeArray groups;
+       int i;
+       struct dom_sid2 *sid = NULL;
+
+       ZERO_STRUCT(user_session_key);
+       ZERO_STRUCT(lm_session_key);
+
+       sampw = server_info->sam_account;
+
+       user_sid = pdb_get_user_sid(sampw);
+       group_sid = pdb_get_group_sid(sampw);
+
+       if (pipe_session_key && pipe_session_key_len != 16) {
+               DEBUG(0,("serverinfo_to_SamInfo3: invalid "
+                        "pipe_session_key_len[%zu] != 16\n",
+                        pipe_session_key_len));
+               return NT_STATUS_INTERNAL_ERROR;
+       }
+
+       if ((user_sid == NULL) || (group_sid == NULL)) {
+               DEBUG(1, ("_netr_LogonSamLogon: User without group or user SID\n"));
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       sid_copy(&domain_sid, user_sid);
+       sid_split_rid(&domain_sid, &user_rid);
+
+       sid = sid_dup_talloc(mem_ctx, &domain_sid);
+       if (!sid) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       if (!sid_peek_check_rid(&domain_sid, group_sid, &group_rid)) {
+               DEBUG(1, ("_netr_LogonSamLogon: user %s\\%s has user sid "
+                         "%s\n but group sid %s.\n"
+                         "The conflicting domain portions are not "
+                         "supported for NETLOGON calls\n",
+                         pdb_get_domain(sampw),
+                         pdb_get_username(sampw),
+                         sid_string_dbg(user_sid),
+                         sid_string_dbg(group_sid)));
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       if(server_info->login_server) {
+               my_name = server_info->login_server;
+       } else {
+               my_name = global_myname();
+       }
+
+       status = nt_token_to_group_list(mem_ctx, &domain_sid,
+                                       server_info->num_sids,
+                                       server_info->sids,
+                                       &num_gids, &gids);
+
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+
+       if (server_info->user_session_key.length) {
+               memcpy(user_session_key.key,
+                      server_info->user_session_key.data,
+                      MIN(sizeof(user_session_key.key),
+                          server_info->user_session_key.length));
+               if (pipe_session_key) {
+                       arcfour_crypt(user_session_key.key, pipe_session_key, 16);
+               }
+       }
+       if (server_info->lm_session_key.length) {
+               memcpy(lm_session_key.key,
+                      server_info->lm_session_key.data,
+                      MIN(sizeof(lm_session_key.key),
+                          server_info->lm_session_key.length));
+               if (pipe_session_key) {
+                       arcfour_crypt(lm_session_key.key, pipe_session_key, 8);
+               }
+       }
+
+       groups.count = num_gids;
+       groups.rids = TALLOC_ARRAY(mem_ctx, struct samr_RidWithAttribute, groups.count);
+       if (!groups.rids) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       for (i=0; i < groups.count; i++) {
+               groups.rids[i].rid = gids[i].rid;
+               groups.rids[i].attributes = gids[i].attributes;
+       }
+
+       unix_to_nt_time(&last_logon, pdb_get_logon_time(sampw));
+       unix_to_nt_time(&last_logoff, get_time_t_max());
+       unix_to_nt_time(&acct_expiry, get_time_t_max());
+       unix_to_nt_time(&last_password_change, pdb_get_pass_last_set_time(sampw));
+       unix_to_nt_time(&allow_password_change, pdb_get_pass_can_change_time(sampw));
+       unix_to_nt_time(&force_password_change, pdb_get_pass_must_change_time(sampw));
+
+       base->last_logon                = last_logon;
+       base->last_logoff               = last_logoff;
+       base->acct_expiry               = acct_expiry;
+       base->last_password_change      = last_password_change;
+       base->allow_password_change     = allow_password_change;
+       base->force_password_change     = force_password_change;
+       base->account_name.string       = talloc_strdup(mem_ctx, pdb_get_username(sampw));
+       base->full_name.string          = talloc_strdup(mem_ctx, pdb_get_fullname(sampw));
+       base->logon_script.string       = talloc_strdup(mem_ctx, pdb_get_logon_script(sampw));
+       base->profile_path.string       = talloc_strdup(mem_ctx, pdb_get_profile_path(sampw));
+       base->home_directory.string     = talloc_strdup(mem_ctx, pdb_get_homedir(sampw));
+       base->home_drive.string         = talloc_strdup(mem_ctx, pdb_get_dir_drive(sampw));
+       base->logon_count               = 0; /* ?? */
+       base->bad_password_count        = 0; /* ?? */
+       base->rid                       = user_rid;
+       base->primary_gid               = group_rid;
+       base->groups                    = groups;
+       base->user_flags                = NETLOGON_EXTRA_SIDS;
+       base->key                       = user_session_key;
+       base->logon_server.string       = my_name;
+       base->domain.string             = talloc_strdup(mem_ctx, pdb_get_domain(sampw));
+       base->domain_sid                = sid;
+       base->LMSessKey                 = lm_session_key;
+       base->acct_flags                = pdb_get_acct_ctrl(sampw);
+
+       ZERO_STRUCT(user_session_key);
+       ZERO_STRUCT(lm_session_key);
+
+       return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ inits a netr_SamInfo2 structure from an auth_serversupplied_info. sam2 must
+ already be initialized and is used as the talloc parent for its members.
+*****************************************************************************/
+
+NTSTATUS serverinfo_to_SamInfo2(struct auth_serversupplied_info *server_info,
+                               uint8_t *pipe_session_key,
+                               size_t pipe_session_key_len,
+                               struct netr_SamInfo2 *sam2)
+{
+       NTSTATUS status;
+
+       status = serverinfo_to_SamInfo_base(sam2,
+                                           server_info,
+                                           pipe_session_key,
+                                           pipe_session_key_len,
+                                           &sam2->base);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+
+       return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ inits a netr_SamInfo3 structure from an auth_serversupplied_info. sam3 must
+ already be initialized and is used as the talloc parent for its members.
+*****************************************************************************/
+
+NTSTATUS serverinfo_to_SamInfo3(struct auth_serversupplied_info *server_info,
+                               uint8_t *pipe_session_key,
+                               size_t pipe_session_key_len,
+                               struct netr_SamInfo3 *sam3)
+{
+       NTSTATUS status;
+
+       status = serverinfo_to_SamInfo_base(sam3,
+                                           server_info,
+                                           pipe_session_key,
+                                           pipe_session_key_len,
+                                           &sam3->base);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+
+       sam3->sidcount          = 0;
+       sam3->sids              = NULL;
+
+       return NT_STATUS_OK;
 }