-/*
+/*
Unix SMB/CIFS implementation.
Pipe SMB reply routines
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Luke Kenneth Casson Leighton 1996-1998
Copyright (C) Paul Ashton 1997-1998.
Copyright (C) Jeremy Allison 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "smbd/smbd.h"
+#include "smbd/globals.h"
+#include "libcli/security/security.h"
+#include "rpc_server/srv_pipe_hnd.h"
-#define PIPE "\\PIPE\\"
-#define PIPELEN strlen(PIPE)
+NTSTATUS open_np_file(struct smb_request *smb_req, const char *name,
+ struct files_struct **pfsp)
+{
+ struct connection_struct *conn = smb_req->conn;
+ struct files_struct *fsp;
+ struct smb_filename *smb_fname = NULL;
+ NTSTATUS status;
+
+ 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;
+
+ smb_fname = synthetic_smb_fname(talloc_tos(), name, NULL, NULL, 0);
+ if (smb_fname == NULL) {
+ file_free(smb_req, fsp);
+ return NT_STATUS_NO_MEMORY;
+ }
+ status = fsp_set_smb_fname(fsp, smb_fname);
+ TALLOC_FREE(smb_fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ file_free(smb_req, fsp);
+ return status;
+ }
+
+ status = np_open(fsp, name,
+ conn->sconn->remote_address,
+ conn->sconn->local_address,
+ conn->session_info,
+ conn->sconn->ev_ctx,
+ conn->sconn->msg_ctx,
+ &fsp->fake_file_handle);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("np_open(%s) returned %s\n", name,
+ nt_errstr(status)));
+ file_free(smb_req, fsp);
+ return status;
+ }
-#define MAX_PIPE_NAME_LEN 24
+ *pfsp = fsp;
+
+ return NT_STATUS_OK;
+}
/****************************************************************************
Reply to an open and X on a named pipe.
const char *fname = NULL;
char *pipe_name = NULL;
files_struct *fsp;
- int size=0,fmode=0,mtime=0,rmode=0;
TALLOC_CTX *ctx = talloc_tos();
NTSTATUS status;
/* If the name doesn't start \PIPE\ then this is directed */
/* at a mailslot or something we really, really don't understand, */
/* not just something we really don't understand. */
- if ( strncmp(pipe_name,PIPE,PIPELEN) != 0 ) {
- reply_doserror(req, ERRSRV, ERRaccess);
+
+#define PIPE "PIPE\\"
+#define PIPELEN strlen(PIPE)
+
+ fname = pipe_name;
+ while (fname[0] == '\\') {
+ fname++;
+ }
+ if (!strnequal(fname, PIPE, PIPELEN)) {
+ reply_nterror(req, NT_STATUS_OBJECT_PATH_SYNTAX_BAD);
return;
}
+ fname += PIPELEN;
+ while (fname[0] == '\\') {
+ fname++;
+ }
- DEBUG(4,("Opening pipe %s.\n", pipe_name));
-
- /* Strip \PIPE\ off the name. */
- fname = pipe_name + PIPELEN;
+ DEBUG(4,("Opening pipe %s => %s.\n", pipe_name, fname));
#if 0
/*
* Hack for NT printers... JRA.
*/
if(should_fail_next_srvsvc_open(fname)) {
- reply_doserror(req, ERRSRV, ERRaccess);
+ reply_nterror(req, NT_STATUS_ACCESS_DENIED);
return;
}
#endif
- status = np_open(req, conn, fname, &fsp);
+ status = open_np_file(req, fname, &fsp);
if (!NT_STATUS_IS_OK(status)) {
if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
reply_botherror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND,
/* Prepare the reply */
reply_outbuf(req, 15, 0);
+ SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
+ SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */
+
/* Mark the opened file as an existing named pipe in message mode. */
SSVAL(req->outbuf,smb_vwv9,2);
SSVAL(req->outbuf,smb_vwv10,0xc700);
- if (rmode == 2) {
- DEBUG(4,("Resetting open result to open from create.\n"));
- rmode = 1;
- }
-
- SSVAL(req->outbuf,smb_vwv2, fsp->fnum);
- SSVAL(req->outbuf,smb_vwv3,fmode);
- srv_put_dos_date3((char *)req->outbuf,smb_vwv4,mtime);
- SIVAL(req->outbuf,smb_vwv6,size);
- SSVAL(req->outbuf,smb_vwv8,rmode);
- SSVAL(req->outbuf,smb_vwv11,0x0001);
-
- chain_reply(req);
- return;
+ SSVAL(req->outbuf, smb_vwv2, fsp->fnum);
+ SSVAL(req->outbuf, smb_vwv3, 0); /* fmode */
+ srv_put_dos_date3((char *)req->outbuf, smb_vwv4, 0); /* mtime */
+ SIVAL(req->outbuf, smb_vwv6, 0); /* size */
+ SSVAL(req->outbuf, smb_vwv8, 0); /* rmode */
+ SSVAL(req->outbuf, smb_vwv11, 0x0001);
}
/****************************************************************************
Reply to a write on a pipe.
****************************************************************************/
+struct pipe_write_state {
+ size_t numtowrite;
+};
+
+static void pipe_write_done(struct tevent_req *subreq);
+
void reply_pipe_write(struct smb_request *req)
{
files_struct *fsp = file_fsp(req, SVAL(req->vwv+0, 0));
- size_t numtowrite = SVAL(req->vwv+1, 0);
- ssize_t nwritten;
const uint8_t *data;
+ struct pipe_write_state *state;
+ struct tevent_req *subreq;
if (!fsp_is_np(fsp)) {
- reply_doserror(req, ERRDOS, ERRbadfid);
+ reply_nterror(req, NT_STATUS_INVALID_HANDLE);
return;
}
return;
}
+ state = talloc(req, struct pipe_write_state);
+ if (state == NULL) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ return;
+ }
+ req->async_priv = state;
+
+ state->numtowrite = SVAL(req->vwv+1, 0);
+
data = req->buf + 3;
- if (numtowrite == 0) {
- nwritten = 0;
- } else {
- NTSTATUS status;
- status = np_write(fsp, data, numtowrite, &nwritten);
- if (!NT_STATUS_IS_OK(status)) {
- reply_nterror(req, status);
- return;
- }
- }
+ DEBUG(6, ("reply_pipe_write: %s, name: %s len: %d\n", fsp_fnum_dbg(fsp),
+ fsp_str_dbg(fsp), (int)state->numtowrite));
- if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0)) {
- reply_unixerror(req, ERRDOS, ERRnoaccess);
+ subreq = np_write_send(state, req->sconn->ev_ctx,
+ fsp->fake_file_handle, data, state->numtowrite);
+ if (subreq == NULL) {
+ TALLOC_FREE(state);
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
+ tevent_req_set_callback(subreq, pipe_write_done,
+ talloc_move(req->conn, &req));
+}
+
+static void pipe_write_done(struct tevent_req *subreq)
+{
+ struct smb_request *req = tevent_req_callback_data(
+ subreq, struct smb_request);
+ struct pipe_write_state *state = talloc_get_type_abort(
+ req->async_priv, struct pipe_write_state);
+ NTSTATUS status;
+ ssize_t nwritten = -1;
+
+ status = np_write_recv(subreq, &nwritten);
+ TALLOC_FREE(subreq);
+ if (nwritten < 0) {
+ reply_nterror(req, status);
+ goto send;
+ }
+
+ /* Looks bogus to me now. Needs to be removed ? JRA. */
+ if ((nwritten == 0 && state->numtowrite != 0)) {
+ reply_nterror(req, NT_STATUS_ACCESS_DENIED);
+ goto send;
+ }
reply_outbuf(req, 1, 0);
SSVAL(req->outbuf,smb_vwv0,nwritten);
-
- DEBUG(3,("write-IPC pnum=%04x nwritten=%d\n", fsp->fnum,
- (int)nwritten));
- return;
+ DEBUG(3,("write-IPC nwritten=%d\n", (int)nwritten));
+
+ send:
+ if (!srv_send_smb(req->xconn, (char *)req->outbuf,
+ true, req->seqnum+1,
+ IS_CONN_ENCRYPTED(req->conn)||req->encrypted,
+ &req->pcd)) {
+ exit_server_cleanly("construct_reply: srv_send_smb failed.");
+ }
+ TALLOC_FREE(req);
}
/****************************************************************************
wrinkles to handle pipes.
****************************************************************************/
+struct pipe_write_andx_state {
+ bool pipe_start_message_raw;
+ size_t numtowrite;
+};
+
+static void pipe_write_andx_done(struct tevent_req *subreq);
+
void reply_pipe_write_and_X(struct smb_request *req)
{
files_struct *fsp = file_fsp(req, SVAL(req->vwv+2, 0));
- size_t numtowrite = SVAL(req->vwv+10, 0);
- ssize_t nwritten;
int smb_doff = SVAL(req->vwv+11, 0);
- bool pipe_start_message_raw =
- ((SVAL(req->vwv+7, 0) & (PIPE_START_MESSAGE|PIPE_RAW_MODE))
- == (PIPE_START_MESSAGE|PIPE_RAW_MODE));
- uint8_t *data;
+ const uint8_t *data;
+ struct pipe_write_andx_state *state;
+ struct tevent_req *subreq;
if (!fsp_is_np(fsp)) {
- reply_doserror(req, ERRDOS, ERRbadfid);
+ reply_nterror(req, NT_STATUS_INVALID_HANDLE);
return;
}
return;
}
- data = (uint8_t *)smb_base(req->inbuf) + smb_doff;
-
- if (numtowrite == 0) {
- nwritten = 0;
- } else {
- NTSTATUS status;
-
- if(pipe_start_message_raw) {
- /*
- * For the start of a message in named pipe byte mode,
- * the first two bytes are a length-of-pdu field. Ignore
- * them (we don't trust the client). JRA.
- */
- if(numtowrite < 2) {
- DEBUG(0,("reply_pipe_write_and_X: start of "
- "message set and not enough data "
- "sent.(%u)\n",
- (unsigned int)numtowrite ));
- reply_unixerror(req, ERRDOS, ERRnoaccess);
- return;
- }
-
- data += 2;
- numtowrite -= 2;
- }
- status = np_write(fsp, data, numtowrite, &nwritten);
- if (!NT_STATUS_IS_OK(status)) {
- reply_nterror(req, status);
+ state = talloc(req, struct pipe_write_andx_state);
+ if (state == NULL) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ return;
+ }
+ req->async_priv = state;
+
+ state->numtowrite = SVAL(req->vwv+10, 0);
+ state->pipe_start_message_raw =
+ ((SVAL(req->vwv+7, 0) & (PIPE_START_MESSAGE|PIPE_RAW_MODE))
+ == (PIPE_START_MESSAGE|PIPE_RAW_MODE));
+
+ DEBUG(6, ("reply_pipe_write_and_X: %s, name: %s len: %d\n",
+ fsp_fnum_dbg(fsp), fsp_str_dbg(fsp), (int)state->numtowrite));
+
+ data = (const uint8_t *)smb_base(req->inbuf) + smb_doff;
+
+ if (state->pipe_start_message_raw) {
+ /*
+ * For the start of a message in named pipe byte mode,
+ * the first two bytes are a length-of-pdu field. Ignore
+ * them (we don't trust the client). JRA.
+ */
+ if (state->numtowrite < 2) {
+ DEBUG(0,("reply_pipe_write_and_X: start of message "
+ "set and not enough data sent.(%u)\n",
+ (unsigned int)state->numtowrite ));
+ reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
+
+ data += 2;
+ state->numtowrite -= 2;
}
- if ((nwritten == 0 && numtowrite != 0) || (nwritten < 0)) {
- reply_unixerror(req, ERRDOS,ERRnoaccess);
+ subreq = np_write_send(state, req->sconn->ev_ctx,
+ fsp->fake_file_handle, data, state->numtowrite);
+ if (subreq == NULL) {
+ TALLOC_FREE(state);
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
+ tevent_req_set_callback(subreq, pipe_write_andx_done,
+ talloc_move(req->conn, &req));
+}
+
+static void pipe_write_andx_done(struct tevent_req *subreq)
+{
+ struct smb_request *req = tevent_req_callback_data(
+ subreq, struct smb_request);
+ struct pipe_write_andx_state *state = talloc_get_type_abort(
+ req->async_priv, struct pipe_write_andx_state);
+ NTSTATUS status;
+ ssize_t nwritten = -1;
+
+ status = np_write_recv(subreq, &nwritten);
+ TALLOC_FREE(subreq);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ reply_nterror(req, status);
+ goto done;
+ }
+
+ /* Looks bogus to me now. Is this error message correct ? JRA. */
+ if (nwritten != state->numtowrite) {
+ reply_nterror(req, NT_STATUS_ACCESS_DENIED);
+ goto done;
+ }
reply_outbuf(req, 6, 0);
- nwritten = (pipe_start_message_raw ? nwritten + 2 : nwritten);
+ SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
+ SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */
+
+ nwritten = (state->pipe_start_message_raw ? nwritten + 2 : nwritten);
SSVAL(req->outbuf,smb_vwv2,nwritten);
-
- DEBUG(3,("writeX-IPC pnum=%04x nwritten=%d\n", fsp->fnum,
- (int)nwritten));
- chain_reply(req);
+ DEBUG(3,("writeX-IPC nwritten=%d\n", (int)nwritten));
+
+ done:
+ /*
+ * We must free here as the ownership of req was
+ * moved to the connection struct in reply_pipe_write_and_X().
+ */
+ smb_request_done(req);
}
/****************************************************************************
wrinkles to handle pipes.
****************************************************************************/
+struct pipe_read_andx_state {
+ uint8_t *outbuf;
+ int smb_mincnt;
+ int smb_maxcnt;
+};
+
+static void pipe_read_andx_done(struct tevent_req *subreq);
+
void reply_pipe_read_and_X(struct smb_request *req)
{
files_struct *fsp = file_fsp(req, SVAL(req->vwv+0, 0));
- int smb_maxcnt = SVAL(req->vwv+5, 0);
- int smb_mincnt = SVAL(req->vwv+6, 0);
- ssize_t nread;
uint8_t *data;
- bool unused;
- NTSTATUS status;
+ struct pipe_read_andx_state *state;
+ struct tevent_req *subreq;
/* we don't use the offset given to use for pipe reads. This
is deliberate, instead we always return the next lump of
data on the pipe */
#if 0
- uint32 smb_offs = IVAL(req->vwv+3, 0);
+ uint32_t smb_offs = IVAL(req->vwv+3, 0);
#endif
if (!fsp_is_np(fsp)) {
- reply_doserror(req, ERRDOS, ERRbadfid);
+ reply_nterror(req, NT_STATUS_INVALID_HANDLE);
return;
}
return;
}
- reply_outbuf(req, 12, smb_maxcnt);
+ state = talloc(req, struct pipe_read_andx_state);
+ if (state == NULL) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ return;
+ }
+ req->async_priv = state;
- data = (uint8_t *)smb_buf(req->outbuf);
+ state->smb_maxcnt = SVAL(req->vwv+5, 0);
+ state->smb_mincnt = SVAL(req->vwv+6, 0);
- status = np_read(fsp, data, smb_maxcnt, &nread, &unused);
+ reply_outbuf(req, 12, state->smb_maxcnt + 1 /* padding byte */);
+ SSVAL(req->outbuf, smb_vwv0, 0xff); /* andx chain ends */
+ SSVAL(req->outbuf, smb_vwv1, 0); /* no andx offset */
+ SCVAL(smb_buf(req->outbuf), 0, 0); /* padding byte */
- if (!NT_STATUS_IS_OK(status)) {
- reply_doserror(req, ERRDOS, ERRnoaccess);
+ data = (uint8_t *)smb_buf(req->outbuf) + 1 /* padding byte */;
+
+ /*
+ * We have to tell the upper layers that we're async.
+ */
+ state->outbuf = req->outbuf;
+ req->outbuf = NULL;
+
+ subreq = np_read_send(state, req->sconn->ev_ctx,
+ fsp->fake_file_handle, data,
+ state->smb_maxcnt);
+ if (subreq == NULL) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
+ tevent_req_set_callback(subreq, pipe_read_andx_done,
+ talloc_move(req->conn, &req));
+}
+
+static void pipe_read_andx_done(struct tevent_req *subreq)
+{
+ struct smb_request *req = tevent_req_callback_data(
+ subreq, struct smb_request);
+ struct pipe_read_andx_state *state = talloc_get_type_abort(
+ req->async_priv, struct pipe_read_andx_state);
+ NTSTATUS status;
+ ssize_t nread;
+ bool is_data_outstanding;
+
+ status = np_read_recv(subreq, &nread, &is_data_outstanding);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ NTSTATUS old = status;
+ status = nt_status_np_pipe(old);
+ reply_nterror(req, status);
+ goto done;
+ }
+
+ req->outbuf = state->outbuf;
+ state->outbuf = NULL;
+
+ srv_set_message((char *)req->outbuf, 12, nread + 1 /* padding byte */,
+ false);
+
+#if 0
+ /*
+ * we should return STATUS_BUFFER_OVERFLOW if there's
+ * out standing data.
+ *
+ * But we can't enable it yet, as it has bad interactions
+ * with fixup_chain_error_packet() in chain_reply().
+ */
+ if (is_data_outstanding) {
+ error_packet_set((char *)req->outbuf, ERRDOS, ERRmoredata,
+ STATUS_BUFFER_OVERFLOW, __LINE__, __FILE__);
+ }
+#endif
- srv_set_message((char *)req->outbuf, 12, nread, False);
-
SSVAL(req->outbuf,smb_vwv5,nread);
- SSVAL(req->outbuf,smb_vwv6,smb_offset(data,req->outbuf));
- SSVAL(smb_buf(req->outbuf),-2,nread);
-
- DEBUG(3,("readX-IPC pnum=%04x min=%d max=%d nread=%d\n",
- fsp->fnum, smb_mincnt, smb_maxcnt, (int)nread));
+ SSVAL(req->outbuf,smb_vwv6,
+ (smb_wct - 4) /* offset from smb header to wct */
+ + 1 /* the wct field */
+ + 12 * sizeof(uint16_t) /* vwv */
+ + 2 /* the buflen field */
+ + 1); /* padding byte */
- chain_reply(req);
+ DEBUG(3,("readX-IPC min=%d max=%d nread=%d\n",
+ state->smb_mincnt, state->smb_maxcnt, (int)nread));
+
+ done:
+ /*
+ * We must free here as the ownership of req was
+ * moved to the connection struct in reply_pipe_read_and_X().
+ */
+ smb_request_done(req);
}
git.samba.org / garming / samba-autobuild / .git / blobdiff