--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+
+ dcerpc over SMB2 transport
+
+ Copyright (C) Andrew Tridgell 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 "libcli/raw/libcliraw.h"
+#include "librpc/gen_ndr/ndr_security.h"
+#include "libcli/composite/composite.h"
+#include "libcli/smb2/smb2.h"
+#include "libcli/smb2/smb2_calls.h"
+
+/* transport private information used by SMB2 pipe transport */
+struct smb2_private {
+ struct smb2_handle handle;
+ struct smb2_tree *tree;
+ const char *server_name;
+};
+
+
+/*
+ tell the dcerpc layer that the transport is dead
+*/
+static void pipe_dead(struct dcerpc_connection *c, NTSTATUS status)
+{
+ c->transport.recv_data(c, NULL, status);
+}
+
+
+/*
+ this holds the state of an in-flight call
+*/
+struct smb2_read_state {
+ struct dcerpc_connection *c;
+ DATA_BLOB data;
+};
+
+/*
+ called when a read request has completed
+*/
+static void smb2_read_callback(struct smb2_request *req)
+{
+ struct smb2_private *smb;
+ struct smb2_read_state *state;
+ struct smb2_read io;
+ uint16_t frag_length;
+ NTSTATUS status;
+
+ state = talloc_get_type(req->async.private, struct smb2_read_state);
+ smb = talloc_get_type(state->c->transport.private, struct smb2_private);
+
+ status = smb2_read_recv(req, state, &io);
+ if (NT_STATUS_IS_ERR(status)) {
+ pipe_dead(state->c, status);
+ talloc_free(state);
+ return;
+ }
+
+ status = data_blob_append(state, &state->data,
+ io.out.data.data, io.out.data.length);
+ if (NT_STATUS_IS_ERR(status)) {
+ pipe_dead(state->c, status);
+ talloc_free(state);
+ return;
+ }
+
+ if (state->data.length < 16) {
+ DEBUG(0,("dcerpc_smb2: short packet (length %d) in read callback!\n",
+ (int)state->data.length));
+ pipe_dead(state->c, NT_STATUS_INFO_LENGTH_MISMATCH);
+ talloc_free(state);
+ return;
+ }
+
+ frag_length = dcerpc_get_frag_length(&state->data);
+
+ if (frag_length <= state->data.length) {
+ DATA_BLOB data = state->data;
+ struct dcerpc_connection *c = state->c;
+ talloc_steal(c, data.data);
+ talloc_free(state);
+ c->transport.recv_data(c, &data, NT_STATUS_OK);
+ return;
+ }
+
+ /* initiate another read request, as we only got part of a fragment */
+ ZERO_STRUCT(io);
+ io.in.length = MIN(state->c->srv_max_xmit_frag,
+ frag_length - state->data.length);
+ io.in.handle = smb->handle;
+
+ req = smb2_read_send(smb->tree, &io);
+ if (req == NULL) {
+ pipe_dead(state->c, NT_STATUS_NO_MEMORY);
+ talloc_free(state);
+ return;
+ }
+
+ req->async.fn = smb2_read_callback;
+ req->async.private = state;
+}
+
+
+/*
+ trigger a read request from the server, possibly with some initial
+ data in the read buffer
+*/
+static NTSTATUS send_read_request_continue(struct dcerpc_connection *c, DATA_BLOB *blob)
+{
+ struct smb2_private *smb = c->transport.private;
+ struct smb2_read io;
+ struct smb2_read_state *state;
+ struct smb2_request *req;
+
+ state = talloc(smb, struct smb2_read_state);
+ if (state == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ state->c = c;
+ if (blob == NULL) {
+ state->data = data_blob(NULL, 0);
+ } else {
+ state->data = *blob;
+ talloc_steal(state, state->data.data);
+ }
+
+ ZERO_STRUCT(io);
+ io.in.handle = smb->handle;
+
+ if (state->data.length >= 16) {
+ uint16_t frag_length = dcerpc_get_frag_length(&state->data);
+ io.in.length = frag_length - state->data.length;
+ } else {
+ io.in.length = 0x2000;
+ }
+
+ req = smb2_read_send(smb->tree, &io);
+ if (req == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ req->async.fn = smb2_read_callback;
+ req->async.private = state;
+
+ return NT_STATUS_OK;
+}
+
+
+/*
+ trigger a read request from the server
+*/
+static NTSTATUS send_read_request(struct dcerpc_connection *c)
+{
+ return send_read_request_continue(c, NULL);
+}
+
+/*
+ this holds the state of an in-flight trans call
+*/
+struct smb2_trans_state {
+ struct dcerpc_connection *c;
+};
+
+/*
+ called when a trans request has completed
+*/
+static void smb2_trans_callback(struct smb2_request *req)
+{
+ struct smb2_trans_state *state = talloc_get_type(req->async.private,
+ struct smb2_trans_state);
+ struct dcerpc_connection *c = state->c;
+ NTSTATUS status;
+ struct smb2_trans io;
+
+ status = smb2_trans_recv(req, state, &io);
+ if (NT_STATUS_IS_ERR(status)) {
+ pipe_dead(c, status);
+ return;
+ }
+
+ if (!NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
+ DATA_BLOB data = io.out.out;
+ talloc_steal(c, data.data);
+ talloc_free(state);
+ c->transport.recv_data(c, &data, NT_STATUS_OK);
+ return;
+ }
+
+ /* there is more to receive - setup a read */
+ send_read_request_continue(c, &io.out.out);
+ talloc_free(state);
+}
+
+/*
+ send a SMBtrans style request
+*/
+static NTSTATUS smb2_send_trans_request(struct dcerpc_connection *c, DATA_BLOB *blob)
+{
+ struct smb2_private *smb = talloc_get_type(c->transport.private,
+ struct smb2_private);
+ struct smb2_trans io;
+ struct smb2_trans_state *state;
+ struct smb2_request *req;
+
+ state = talloc(smb, struct smb2_trans_state);
+ if (state == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ state->c = c;
+
+ ZERO_STRUCT(io);
+ io.in.unknown1 = 0x0011c017;
+ io.in.handle = smb->handle;
+ io.in.max_response_size = 0x10000;
+ io.in.flags = 1;
+ io.in.out = *blob;
+
+ req = smb2_trans_send(smb->tree, &io);
+ if (req == NULL) {
+ talloc_free(state);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ req->async.fn = smb2_trans_callback;
+ req->async.private = state;
+
+ talloc_steal(state, req);
+
+ return NT_STATUS_OK;
+}
+
+/*
+ called when a write request has completed
+*/
+static void smb2_write_callback(struct smb2_request *req)
+{
+ struct dcerpc_connection *c = req->async.private;
+
+ if (!NT_STATUS_IS_OK(req->status)) {
+ DEBUG(0,("dcerpc_smb2: write callback error\n"));
+ pipe_dead(c, req->status);
+ }
+
+ smb2_request_destroy(req);
+}
+
+/*
+ send a packet to the server
+*/
+static NTSTATUS smb2_send_request(struct dcerpc_connection *c, DATA_BLOB *blob,
+ BOOL trigger_read)
+{
+ struct smb2_private *smb = c->transport.private;
+ struct smb2_write io;
+ struct smb2_request *req;
+
+ if (trigger_read) {
+ return smb2_send_trans_request(c, blob);
+ }
+
+ ZERO_STRUCT(io);
+ io.in.handle = smb->handle;
+ io.in.data = *blob;
+
+ req = smb2_write_send(smb->tree, &io);
+ if (req == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ req->async.fn = smb2_write_callback;
+ req->async.private = c;
+
+ return NT_STATUS_OK;
+}
+
+/*
+ shutdown SMB pipe connection
+*/
+static NTSTATUS smb2_shutdown_pipe(struct dcerpc_connection *c)
+{
+ struct smb2_private *smb = c->transport.private;
+ struct smb2_close io;
+ struct smb2_request *req;
+
+ /* maybe we're still starting up */
+ if (!smb) return NT_STATUS_OK;
+
+ ZERO_STRUCT(io);
+ io.in.handle = smb->handle;
+ req = smb2_close_send(smb->tree, &io);
+ if (req != NULL) {
+ /* we don't care if this fails, so just free it if it succeeds */
+ req->async.fn = (void (*)(struct smb2_request *))talloc_free;
+ }
+
+ talloc_free(smb);
+
+ return NT_STATUS_OK;
+}
+
+/*
+ return SMB server name
+*/
+static const char *smb2_peer_name(struct dcerpc_connection *c)
+{
+ struct smb2_private *smb = talloc_get_type(c->transport.private,
+ struct smb2_private);
+ return smb->server_name;
+}
+
+/*
+ fetch the user session key
+*/
+static NTSTATUS smb2_session_key(struct dcerpc_connection *c, DATA_BLOB *session_key)
+{
+ struct smb2_private *smb = talloc_get_type(c->transport.private,
+ struct smb2_private);
+ *session_key = smb->tree->session->session_key;
+ if (session_key->data == NULL) {
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+ return NT_STATUS_OK;
+}
+
+struct pipe_open_smb2_state {
+ struct dcerpc_connection *c;
+ struct composite_context *ctx;
+};
+
+static void pipe_open_recv(struct smb2_request *req);
+
+struct composite_context *dcerpc_pipe_open_smb2_send(struct dcerpc_connection *c,
+ struct smb2_tree *tree,
+ const char *pipe_name)
+{
+ struct composite_context *ctx;
+ struct pipe_open_smb2_state *state;
+ struct smb2_create io;
+ struct smb2_request *req;
+
+ ctx = talloc_zero(NULL, struct composite_context);
+ if (ctx == NULL) goto failed;
+ ctx->state = COMPOSITE_STATE_IN_PROGRESS;
+ ctx->event_ctx = talloc_reference(c, c->event_ctx);
+
+ state = talloc(ctx, struct pipe_open_smb2_state);
+ if (state == NULL) goto failed;
+
+ state->c = c;
+ state->ctx = ctx;
+
+ ZERO_STRUCT(io);
+ io.in.access_mask =
+ SEC_STD_READ_CONTROL |
+ SEC_FILE_READ_ATTRIBUTE |
+ SEC_FILE_WRITE_ATTRIBUTE |
+ SEC_STD_SYNCHRONIZE |
+ SEC_FILE_READ_EA |
+ SEC_FILE_WRITE_EA |
+ SEC_FILE_READ_DATA |
+ SEC_FILE_WRITE_DATA |
+ SEC_FILE_APPEND_DATA;
+ io.in.share_access =
+ NTCREATEX_SHARE_ACCESS_READ |
+ NTCREATEX_SHARE_ACCESS_WRITE;
+ io.in.open_disposition = NTCREATEX_DISP_OPEN;
+ io.in.create_options = 0x400040;
+ io.in.impersonation = NTCREATEX_IMPERSONATION_IMPERSONATION;
+
+ if ((strncasecmp(pipe_name, "/pipe/", 6) == 0) ||
+ (strncasecmp(pipe_name, "\\pipe\\", 6) == 0)) {
+ pipe_name += 6;
+ }
+ io.in.fname = pipe_name;
+
+ req = smb2_create_send(tree, &io);
+ if (req == NULL) goto failed;
+
+ req->async.fn = pipe_open_recv;
+ req->async.private = state;
+
+ return ctx;
+
+ failed:
+ talloc_free(ctx);
+ return NULL;
+}
+
+static void pipe_open_recv(struct smb2_request *req)
+{
+ struct pipe_open_smb2_state *state =
+ talloc_get_type(req->async.private,
+ struct pipe_open_smb2_state);
+ struct composite_context *ctx = state->ctx;
+ struct dcerpc_connection *c = state->c;
+ struct smb2_tree *tree = req->tree;
+ struct smb2_private *smb;
+ struct smb2_create io;
+
+ ctx->status = smb2_create_recv(req, state, &io);
+ if (!composite_is_ok(ctx)) return;
+
+ /*
+ fill in the transport methods
+ */
+ c->transport.transport = NCACN_NP;
+ c->transport.private = NULL;
+ c->transport.shutdown_pipe = smb2_shutdown_pipe;
+ c->transport.peer_name = smb2_peer_name;
+
+ c->transport.send_request = smb2_send_request;
+ c->transport.send_read = send_read_request;
+ c->transport.recv_data = NULL;
+
+ /* Over-ride the default session key with the SMB session key */
+ c->security_state.session_key = smb2_session_key;
+
+ smb = talloc(c, struct smb2_private);
+ if (composite_nomem(smb, ctx)) return;
+
+ smb->handle = io.out.handle;
+ smb->tree = talloc_reference(smb, tree);
+ smb->server_name= strupper_talloc(smb,
+ tree->session->transport->socket->hostname);
+ if (composite_nomem(smb->server_name, ctx)) return;
+
+ c->transport.private = smb;
+
+ composite_done(ctx);
+}
+
+NTSTATUS dcerpc_pipe_open_smb2_recv(struct composite_context *c)
+{
+ NTSTATUS status = composite_wait(c);
+ talloc_free(c);
+ return status;
+}
+
+NTSTATUS dcerpc_pipe_open_smb2(struct dcerpc_connection *c,
+ struct smb2_tree *tree,
+ const char *pipe_name)
+{
+ struct composite_context *ctx = dcerpc_pipe_open_smb2_send(c, tree, pipe_name);
+ return dcerpc_pipe_open_smb2_recv(ctx);
+}
+
+/*
+ return the SMB2 tree used for a dcerpc over SMB2 pipe
+*/
+struct smb2_tree *dcerpc_smb2_tree(struct dcerpc_connection *c)
+{
+ struct smb2_private *smb = talloc_get_type(c->transport.private,
+ struct smb2_private);
+ return smb->tree;
+}
{"validate", DCERPC_DEBUG_VALIDATE_BOTH},
{"print", DCERPC_DEBUG_PRINT_BOTH},
{"padcheck", DCERPC_DEBUG_PAD_CHECK},
- {"bigendian", DCERPC_PUSH_BIGENDIAN}
+ {"bigendian", DCERPC_PUSH_BIGENDIAN},
+ {"smb2", DCERPC_SMB2}
};
const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
/* open a rpc connection to a rpc pipe on SMB using the binding
structure to determine the endpoint and options */
-static NTSTATUS dcerpc_pipe_connect_ncacn_np(TALLOC_CTX *tmp_ctx,
- struct dcerpc_pipe *p,
- struct dcerpc_binding *binding,
- const char *pipe_uuid,
- uint32_t pipe_version,
- struct cli_credentials *credentials)
+static NTSTATUS dcerpc_pipe_connect_ncacn_np_smb(TALLOC_CTX *tmp_ctx,
+ struct dcerpc_pipe *p,
+ struct dcerpc_binding *binding,
+ const char *pipe_uuid,
+ uint32_t pipe_version,
+ struct cli_credentials *credentials)
{
NTSTATUS status;
struct smbcli_state *cli;
return NT_STATUS_OK;
}
+/* open a rpc connection to a rpc pipe on SMB2 using the binding
+ structure to determine the endpoint and options */
+static NTSTATUS dcerpc_pipe_connect_ncacn_np_smb2(TALLOC_CTX *tmp_ctx,
+ struct dcerpc_pipe *p,
+ struct dcerpc_binding *binding,
+ const char *pipe_uuid,
+ uint32_t pipe_version,
+ struct cli_credentials *credentials)
+{
+ NTSTATUS status;
+ struct smb2_tree *tree;
+ const char *pipe_name = NULL;
+
+ if (binding->flags & DCERPC_SCHANNEL) {
+ credentials = cli_credentials_init(tmp_ctx);
+ cli_credentials_set_anonymous(credentials);
+ cli_credentials_guess(credentials);
+ }
+ status = smb2_connect(tmp_ctx, binding->host, "IPC$", credentials, &tree,
+ p->conn->event_ctx);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("Failed to connect to %s - %s\n",
+ binding->host, nt_errstr(status)));
+ return status;
+ }
+
+ pipe_name = binding->endpoint;
+
+ status = dcerpc_pipe_open_smb2(p->conn, tree, pipe_name);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("Failed to open pipe %s - %s\n", pipe_name, nt_errstr(status)));
+ return status;
+ }
+
+ talloc_steal(p->conn, tree);
+
+ return NT_STATUS_OK;
+}
+
+
+/* open a rpc connection to a rpc pipe on SMB using the binding
+ structure to determine the endpoint and options */
+static NTSTATUS dcerpc_pipe_connect_ncacn_np(TALLOC_CTX *tmp_ctx,
+ struct dcerpc_pipe *p,
+ struct dcerpc_binding *binding,
+ const char *pipe_uuid,
+ uint32_t pipe_version,
+ struct cli_credentials *credentials)
+{
+ if (binding->flags & DCERPC_SMB2) {
+ return dcerpc_pipe_connect_ncacn_np_smb2(tmp_ctx, p, binding, pipe_uuid,
+ pipe_version, credentials);
+ }
+ return dcerpc_pipe_connect_ncacn_np_smb(tmp_ctx, p, binding, pipe_uuid,
+ pipe_version, credentials);
+}
+
/* open a rpc connection to a rpc pipe on SMP using the binding
structure to determine the endpoint and options */
static NTSTATUS dcerpc_pipe_connect_ncalrpc(TALLOC_CTX *tmp_ctx,
git.samba.org / rusty / samba.git / commitdiff