diff options
Diffstat (limited to 'source4/rpc_server/dcerpc_np.c')
| -rw-r--r-- | source4/rpc_server/dcerpc_np.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/source4/rpc_server/dcerpc_np.c b/source4/rpc_server/dcerpc_np.c new file mode 100644 index 0000000000..a1da60f7f6 --- /dev/null +++ b/source4/rpc_server/dcerpc_np.c @@ -0,0 +1,167 @@ +/* + Unix SMB/CIFS implementation. + DCE/RPC over named pipes support (glue between dcerpc and smb servers) + + Copyright (C) Jelmer Vernooij 2005 + + 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 + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + 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. +*/ + +#include "includes.h" +#include "lib/socket/socket.h" +#include "lib/events/events.h" +#include "rpc_server/dcerpc_server.h" +#include "ntvfs/ipc/ipc.h" + +static NTSTATUS dcesrv_pipe_open (void *context_data, const char *path, struct auth_session_info *session_info, struct stream_connection *srv_conn, TALLOC_CTX *mem_ctx, void **private_data) +{ + NTSTATUS status; + struct dcerpc_binding *ep_description; + struct dcesrv_connection *dce_conn; + + ep_description = talloc(mem_ctx, struct dcerpc_binding); + NT_STATUS_HAVE_NO_MEMORY(ep_description); + + /* + we're all set, now ask the dcerpc server subsystem to open the + endpoint. At this stage the pipe isn't bound, so we don't + know what interface the user actually wants, just that they want + one of the interfaces attached to this pipe endpoint. + */ + ep_description->transport = NCACN_NP; + ep_description->endpoint = talloc_reference(ep_description, path); + + /* The session info is refcount-increased in the + * dcesrv_endpoint_search_connect() function + */ + status = dcesrv_endpoint_search_connect(context_data, + mem_ctx, + ep_description, + session_info, + srv_conn, + &dce_conn); + talloc_free(ep_description); + + if (!NT_STATUS_IS_OK(status)) { + return status; + } + + *private_data = dce_conn; + + return NT_STATUS_OK; +} + +static NTSTATUS ipc_trans_dcesrv_output(void *private_data, DATA_BLOB *out, size_t *nwritten) +{ + NTSTATUS status = NT_STATUS_OK; + DATA_BLOB *blob = private_data; + + if (out->length > blob->length) { + status = STATUS_BUFFER_OVERFLOW; + } + + if (out->length < blob->length) { + blob->length = out->length; + } + memcpy(blob->data, out->data, blob->length); + *nwritten = blob->length; + return status; +} + + +static NTSTATUS dcesrv_pipe_trans(void *private_data, DATA_BLOB *in, DATA_BLOB *out) +{ + struct dcesrv_connection *dce_conn = private_data; + NTSTATUS status; + + /* pass the data to the dcerpc server. Note that we don't + expect this to fail, and things like NDR faults are not + reported at this stage. Those sorts of errors happen in the + dcesrv_output stage */ + status = dcesrv_input(dce_conn, in); + if (!NT_STATUS_IS_OK(status)) { + return status; + } + + /* + now ask the dcerpc system for some output. This doesn't yet handle + async calls. Again, we only expect NT_STATUS_OK. If the call fails then + the error is encoded at the dcerpc level + */ + status = dcesrv_output(dce_conn, out, ipc_trans_dcesrv_output); + if (NT_STATUS_IS_ERR(status)) { + return status; + } + + return status; +} + +static NTSTATUS dcesrv_pipe_write(void *private_data, DATA_BLOB *out) +{ + struct dcesrv_connection *dce_conn = private_data; + NTSTATUS status; + + status = dcesrv_input(dce_conn, out); + if (!NT_STATUS_IS_OK(status)) { + return status; + } + return status; +} + +static NTSTATUS ipc_readx_dcesrv_output(void *private_data, DATA_BLOB *out, size_t *nwritten) +{ + DATA_BLOB *blob = private_data; + + if (out->length < blob->length) { + blob->length = out->length; + } + memcpy(blob->data, out->data, blob->length); + *nwritten = blob->length; + return NT_STATUS_OK; +} + + +static NTSTATUS dcesrv_pipe_read(void *private_data, DATA_BLOB *in) +{ + struct dcesrv_connection *dce_conn = private_data; + NTSTATUS status; + + status = dcesrv_output(dce_conn, in, ipc_readx_dcesrv_output); + if (NT_STATUS_IS_ERR(status)) { + return status; + } + + return status; +} + +const struct named_pipe_ops dce_pipe_ops = { + .open = dcesrv_pipe_open, + .write = dcesrv_pipe_write, + .read = dcesrv_pipe_read, + .trans = dcesrv_pipe_trans +}; + +/* Add named pipe endpoint */ +NTSTATUS dcesrv_add_ep_np(struct dcesrv_context *dce_ctx, struct dcesrv_endpoint *e, struct event_context *event_ctx, const struct model_ops *model_ops) +{ + NTSTATUS status; + + status = named_pipe_listen(e->ep_description->endpoint, &dce_pipe_ops, dce_ctx); + if (NT_STATUS_IS_ERR(status)) { + return status; + } + + return NT_STATUS_OK; +} |