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 "system/filesys.h"
+#include <tevent.h>
+#include "lib/tsocket/tsocket.h"
+#include "libcli/smb/smb_constants.h"
+#include "libcli/smb/smbXcli_base.h"
+#include "libcli/smb/tstream_smbXcli_np.h"
#include "libcli/raw/libcliraw.h"
-#include "libcli/composite/composite.h"
+#include "libcli/smb2/smb2.h"
#include "librpc/rpc/dcerpc.h"
+#include "librpc/rpc/dcerpc_proto.h"
+#include "libcli/composite/composite.h"
/* transport private information used by SMB pipe transport */
struct smb_private {
- uint16_t fnum;
- struct smbcli_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 smb_read_state {
- struct dcerpc_connection *c;
- struct smbcli_request *req;
- size_t received;
- DATA_BLOB data;
- union smb_read *io;
-};
-
-/*
- called when a read request has completed
-*/
-static void smb_read_callback(struct smbcli_request *req)
-{
- struct smb_private *smb;
- struct smb_read_state *state;
- union smb_read *io;
- uint16_t frag_length;
- NTSTATUS status;
-
- state = talloc_get_type(req->async.private, struct smb_read_state);
- smb = talloc_get_type(state->c->transport.private, struct smb_private);
- io = state->io;
-
- status = smb_raw_read_recv(state->req, io);
- if (NT_STATUS_IS_ERR(status)) {
- pipe_dead(state->c, status);
- talloc_free(state);
- return;
- }
-
- state->received += io->readx.out.nread;
-
- if (state->received < 16) {
- DEBUG(0,("dcerpc_smb: short packet (length %d) in read callback!\n",
- (int)state->received));
- 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->received) {
- DATA_BLOB data = state->data;
- struct dcerpc_connection *c = state->c;
- data.length = state->received;
- talloc_steal(state->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 */
- state->data.data = talloc_realloc(state, state->data.data, uint8_t, frag_length);
-
- io->readx.in.mincnt = MIN(state->c->srv_max_xmit_frag,
- frag_length - state->received);
- io->readx.in.maxcnt = io->readx.in.mincnt;
- io->readx.out.data = state->data.data + state->received;
-
- state->req = smb_raw_read_send(smb->tree, io);
- if (state->req == NULL) {
- pipe_dead(state->c, NT_STATUS_NO_MEMORY);
- talloc_free(state);
- return;
- }
-
- state->req->async.fn = smb_read_callback;
- state->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 smb_private *smb = c->transport.private;
- union smb_read *io;
- struct smb_read_state *state;
- struct smbcli_request *req;
-
- state = talloc(smb, struct smb_read_state);
- if (state == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
-
- state->c = c;
- if (blob == NULL) {
- state->received = 0;
- state->data = data_blob_talloc(state, NULL, 0x2000);
- } else {
- uint32_t frag_length = blob->length>=16?
- dcerpc_get_frag_length(blob):0x2000;
- state->received = blob->length;
- state->data = data_blob_talloc(state, NULL, frag_length);
- if (!state->data.data) {
- talloc_free(state);
- return NT_STATUS_NO_MEMORY;
- }
- memcpy(state->data.data, blob->data, blob->length);
- }
-
- state->io = talloc(state, union smb_read);
-
- io = state->io;
- io->generic.level = RAW_READ_READX;
- io->readx.in.file.fnum = smb->fnum;
- io->readx.in.mincnt = state->data.length - state->received;
- io->readx.in.maxcnt = io->readx.in.mincnt;
- io->readx.in.offset = 0;
- io->readx.in.remaining = 0;
- io->readx.in.read_for_execute = False;
- io->readx.out.data = state->data.data + state->received;
- req = smb_raw_read_send(smb->tree, io);
- if (req == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
-
- req->async.fn = smb_read_callback;
- req->async.private = state;
-
- state->req = req;
-
- 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 smb_trans_state {
- struct dcerpc_connection *c;
- struct smbcli_request *req;
- struct smb_trans2 *trans;
+ DATA_BLOB session_key;
};
/*
- called when a trans request has completed
-*/
-static void smb_trans_callback(struct smbcli_request *req)
-{
- struct smb_trans_state *state = req->async.private;
- struct dcerpc_connection *c = state->c;
- NTSTATUS status;
-
- status = smb_raw_trans_recv(req, state, state->trans);
-
- if (NT_STATUS_IS_ERR(status)) {
- pipe_dead(c, status);
- return;
- }
-
- if (!NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
- DATA_BLOB data = state->trans->out.data;
- 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 readx */
- send_read_request_continue(c, &state->trans->out.data);
- talloc_free(state);
-}
-
-/*
- send a SMBtrans style request
-*/
-static NTSTATUS smb_send_trans_request(struct dcerpc_connection *c, DATA_BLOB *blob)
-{
- struct smb_private *smb = c->transport.private;
- struct smb_trans2 *trans;
- uint16_t setup[2];
- struct smb_trans_state *state;
-
- state = talloc(smb, struct smb_trans_state);
- if (state == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
-
- state->c = c;
- state->trans = talloc(state, struct smb_trans2);
- trans = state->trans;
-
- trans->in.data = *blob;
- trans->in.params = data_blob(NULL, 0);
-
- setup[0] = TRANSACT_DCERPCCMD;
- setup[1] = smb->fnum;
-
- trans->in.max_param = 0;
- trans->in.max_data = smb_raw_max_trans_data(smb->tree, 0);
- trans->in.max_setup = 0;
- trans->in.setup_count = 2;
- trans->in.flags = 0;
- trans->in.timeout = 0;
- trans->in.setup = setup;
- trans->in.trans_name = "\\PIPE\\";
-
- state->req = smb_raw_trans_send(smb->tree, trans);
- if (state->req == NULL) {
- talloc_free(state);
- return NT_STATUS_NO_MEMORY;
- }
-
- state->req->async.fn = smb_trans_callback;
- state->req->async.private = state;
-
- talloc_steal(state, state->req);
-
- return NT_STATUS_OK;
-}
-
-/*
- called when a write request has completed
-*/
-static void smb_write_callback(struct smbcli_request *req)
-{
- struct dcerpc_connection *c = req->async.private;
-
- if (!NT_STATUS_IS_OK(req->status)) {
- DEBUG(0,("dcerpc_smb: write callback error\n"));
- pipe_dead(c, req->status);
- }
-
- smbcli_request_destroy(req);
-}
-
-/*
- send a packet to the server
-*/
-static NTSTATUS smb_send_request(struct dcerpc_connection *c, DATA_BLOB *blob, BOOL trigger_read)
-{
- struct smb_private *smb = c->transport.private;
- union smb_write io;
- struct smbcli_request *req;
-
- if (trigger_read) {
- return smb_send_trans_request(c, blob);
- }
-
- io.generic.level = RAW_WRITE_WRITEX;
- io.writex.in.file.fnum = smb->fnum;
- io.writex.in.offset = 0;
- io.writex.in.wmode = PIPE_START_MESSAGE;
- io.writex.in.remaining = blob->length;
- io.writex.in.count = blob->length;
- io.writex.in.data = blob->data;
-
- /* we must not timeout at the smb level for rpc requests, as otherwise
- signing/sealing can be messed up */
- smb->tree->session->transport->options.request_timeout = 0;
-
- req = smb_raw_write_send(smb->tree, &io);
- if (req == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
-
- req->async.fn = smb_write_callback;
- req->async.private = c;
-
- if (trigger_read) {
- send_read_request(c);
- }
-
- return NT_STATUS_OK;
-}
-
-/*
- shutdown SMB pipe connection
+ fetch the user session key
*/
-static NTSTATUS smb_shutdown_pipe(struct dcerpc_connection *c)
+static NTSTATUS smb_session_key(struct dcecli_connection *c, DATA_BLOB *session_key)
{
- struct smb_private *smb = c->transport.private;
- union smb_close io;
- struct smbcli_request *req;
+ struct smb_private *smb = talloc_get_type_abort(
+ c->transport.private_data, struct smb_private);
- /* maybe we're still starting up */
- if (!smb) return NT_STATUS_OK;
+ if (smb == NULL) return NT_STATUS_CONNECTION_DISCONNECTED;
- io.close.level = RAW_CLOSE_CLOSE;
- io.close.in.file.fnum = smb->fnum;
- io.close.in.write_time = 0;
- req = smb_raw_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 smbcli_request *))talloc_free;
+ if (smb->session_key.length == 0) {
+ return NT_STATUS_NO_USER_SESSION_KEY;
}
- talloc_free(smb);
-
+ *session_key = smb->session_key;
return NT_STATUS_OK;
}
-/*
- return SMB server name (called name)
-*/
-static const char *smb_peer_name(struct dcerpc_connection *c)
-{
- struct smb_private *smb = c->transport.private;
- return smb->server_name;
-}
-
-/*
- return remote name we make the actual connection (good for kerberos)
-*/
-static const char *smb_target_hostname(struct dcerpc_connection *c)
-{
- struct smb_private *smb = talloc_get_type(c->transport.private, struct smb_private);
- return smb->tree->session->transport->socket->hostname;
-}
-
-/*
- fetch the user session key
-*/
-static NTSTATUS smb_session_key(struct dcerpc_connection *c, DATA_BLOB *session_key)
-{
- struct smb_private *smb = c->transport.private;
+struct dcerpc_pipe_open_smb_state {
+ struct dcecli_connection *c;
+ struct composite_context *ctx;
- if (smb->tree->session->user_session_key.data) {
- *session_key = smb->tree->session->user_session_key;
- return NT_STATUS_OK;
- }
- return NT_STATUS_NO_USER_SESSION_KEY;
-}
+ const char *fname;
-struct pipe_open_smb_state {
- union smb_open *open;
- struct dcerpc_connection *c;
- struct smbcli_tree *tree;
- struct composite_context *ctx;
+ struct smb_private *smb;
};
-static void pipe_open_recv(struct smbcli_request *req);
+static void dcerpc_pipe_open_smb_done(struct tevent_req *subreq);
-struct composite_context *dcerpc_pipe_open_smb_send(struct dcerpc_pipe *p,
- struct smbcli_tree *tree,
- const char *pipe_name)
+struct composite_context *dcerpc_pipe_open_smb_send(struct dcecli_connection *c,
+ struct smbXcli_conn *conn,
+ struct smbXcli_session *session,
+ struct smbXcli_tcon *tcon,
+ uint32_t timeout_msec,
+ const char *pipe_name)
{
struct composite_context *ctx;
- struct pipe_open_smb_state *state;
- struct smbcli_request *req;
- struct dcerpc_connection *c = p->conn;
-
- /* if we don't have a binding on this pipe yet, then create one */
- if (p->binding == NULL) {
- NTSTATUS status;
- char *s = talloc_asprintf(p, "ncacn_np:%s", tree->session->transport->socket->hostname);
- if (s == NULL) return NULL;
- status = dcerpc_parse_binding(p, s, &p->binding);
- talloc_free(s);
- if (!NT_STATUS_IS_OK(status)) {
- return NULL;
- }
- }
+ struct dcerpc_pipe_open_smb_state *state;
+ uint16_t pid = 0;
+ struct tevent_req *subreq;
ctx = composite_create(c, c->event_ctx);
if (ctx == NULL) return NULL;
- state = talloc(ctx, struct pipe_open_smb_state);
+ state = talloc(ctx, struct dcerpc_pipe_open_smb_state);
if (composite_nomem(state, ctx)) return ctx;
ctx->private_data = state;
state->c = c;
- state->tree = tree;
state->ctx = ctx;
- state->open = talloc(state, union smb_open);
- if (composite_nomem(state->open, ctx)) return ctx;
-
- state->open->ntcreatex.level = RAW_OPEN_NTCREATEX;
- state->open->ntcreatex.in.flags = 0;
- state->open->ntcreatex.in.root_fid = 0;
- state->open->ntcreatex.in.access_mask =
- SEC_STD_READ_CONTROL |
- SEC_FILE_WRITE_ATTRIBUTE |
- SEC_FILE_WRITE_EA |
- SEC_FILE_READ_DATA |
- SEC_FILE_WRITE_DATA;
- state->open->ntcreatex.in.file_attr = 0;
- state->open->ntcreatex.in.alloc_size = 0;
- state->open->ntcreatex.in.share_access =
- NTCREATEX_SHARE_ACCESS_READ |
- NTCREATEX_SHARE_ACCESS_WRITE;
- state->open->ntcreatex.in.open_disposition = NTCREATEX_DISP_OPEN;
- state->open->ntcreatex.in.create_options = 0;
- state->open->ntcreatex.in.impersonation =
- NTCREATEX_IMPERSONATION_IMPERSONATION;
- state->open->ntcreatex.in.security_flags = 0;
-
if ((strncasecmp(pipe_name, "/pipe/", 6) == 0) ||
(strncasecmp(pipe_name, "\\pipe\\", 6) == 0)) {
pipe_name += 6;
}
- state->open->ntcreatex.in.fname =
- (pipe_name[0] == '\\') ?
- talloc_strdup(state->open, pipe_name) :
- talloc_asprintf(state->open, "\\%s", pipe_name);
- if (composite_nomem(state->open->ntcreatex.in.fname, ctx)) return ctx;
+ if ((strncasecmp(pipe_name, "/", 1) == 0) ||
+ (strncasecmp(pipe_name, "\\", 1) == 0)) {
+ pipe_name += 1;
+ }
+ state->fname = talloc_strdup(state, pipe_name);
+ if (composite_nomem(state->fname, ctx)) return ctx;
+
+ state->smb = talloc_zero(state, struct smb_private);
+ if (composite_nomem(state->smb, ctx)) return ctx;
+
+ state->c->server_name = strupper_talloc(state->c,
+ smbXcli_conn_remote_name(conn));
+ if (composite_nomem(state->c->server_name, ctx)) return ctx;
+
+ ctx->status = smbXcli_session_application_key(session,
+ state->smb,
+ &state->smb->session_key);
+ if (NT_STATUS_EQUAL(ctx->status, NT_STATUS_NO_USER_SESSION_KEY)) {
+ state->smb->session_key = data_blob_null;
+ ctx->status = NT_STATUS_OK;
+ }
+ if (!composite_is_ok(ctx)) return ctx;
+
+ subreq = tstream_smbXcli_np_open_send(state, c->event_ctx,
+ conn, session, tcon, pid,
+ timeout_msec, state->fname);
+ if (composite_nomem(subreq, ctx)) return ctx;
+ tevent_req_set_callback(subreq, dcerpc_pipe_open_smb_done, state);
- req = smb_raw_open_send(tree, state->open);
- composite_continue_smb(ctx, req, pipe_open_recv, state);
return ctx;
}
-static void pipe_open_recv(struct smbcli_request *req)
+static void dcerpc_pipe_open_smb_done(struct tevent_req *subreq)
{
- struct pipe_open_smb_state *state = talloc_get_type(req->async.private,
- struct pipe_open_smb_state);
+ struct dcerpc_pipe_open_smb_state *state =
+ tevent_req_callback_data(subreq,
+ struct dcerpc_pipe_open_smb_state);
struct composite_context *ctx = state->ctx;
- struct dcerpc_connection *c = state->c;
- struct smb_private *smb;
-
- ctx->status = smb_raw_open_recv(req, state, state->open);
+ struct dcecli_connection *c = state->c;
+
+ ctx->status = tstream_smbXcli_np_open_recv(subreq,
+ state->smb,
+ &state->c->transport.stream);
+ TALLOC_FREE(subreq);
if (!composite_is_ok(ctx)) return;
+ state->c->transport.write_queue =
+ tevent_queue_create(state->c, "dcerpc_smb write queue");
+ if (composite_nomem(state->c->transport.write_queue, ctx)) return;
+
/*
fill in the transport methods
*/
c->transport.transport = NCACN_NP;
- c->transport.private = NULL;
- c->transport.shutdown_pipe = smb_shutdown_pipe;
- c->transport.peer_name = smb_peer_name;
- c->transport.target_hostname = smb_target_hostname;
+ c->transport.private_data = NULL;
+
+ /*
+ * Windows uses 4280 for ncacn_np,
+ * so we also use it, this is what our
+ * tstream_smbXcli_np code relies on.
+ */
+ c->srv_max_xmit_frag = 4280;
+ c->srv_max_recv_frag = 4280;
- c->transport.send_request = smb_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 = smb_session_key;
- smb = talloc(c, struct smb_private);
- if (composite_nomem(smb, ctx)) return;
-
- smb->fnum = state->open->ntcreatex.out.file.fnum;
- smb->tree = talloc_reference(smb, state->tree);
- smb->server_name= strupper_talloc(smb,
- state->tree->session->transport->called.name);
- if (composite_nomem(smb->server_name, ctx)) return;
- c->transport.private = smb;
+ c->transport.private_data = talloc_move(c, &state->smb);
composite_done(ctx);
}
talloc_free(c);
return status;
}
-
-NTSTATUS dcerpc_pipe_open_smb(struct dcerpc_pipe *p,
- struct smbcli_tree *tree,
- const char *pipe_name)
-{
- struct composite_context *ctx = dcerpc_pipe_open_smb_send(p, tree,
- pipe_name);
- return dcerpc_pipe_open_smb_recv(ctx);
-}
-
-/*
- return the SMB tree used for a dcerpc over SMB pipe
-*/
-struct smbcli_tree *dcerpc_smb_tree(struct dcerpc_connection *c)
-{
- struct smb_private *smb;
-
- if (c->transport.transport != NCACN_NP) return NULL;
-
- smb = talloc_get_type(c->transport.private, struct smb_private);
- if (!smb) return NULL;
-
- return smb->tree;
-}
git.samba.org / metze / samba / wip.git / blobdiff