*/
#include "includes.h"
-
-extern int max_send;
+#include "smbd/smbd.h"
+#include "smbd/globals.h"
+#include "smbprofile.h"
+#include "rpc_server/srv_pipe_hnd.h"
#define NERR_notsupported 50
Send a trans reply.
****************************************************************************/
-void send_trans_reply(connection_struct *conn, const uint8_t *inbuf,
+void send_trans_reply(connection_struct *conn,
+ struct smb_request *req,
char *rparam, int rparam_len,
char *rdata, int rdata_len,
bool buffer_too_large)
int tot_data_sent = 0;
int tot_param_sent = 0;
int align;
- char *outbuf;
int ldata = rdata ? rdata_len : 0;
int lparam = rparam ? rparam_len : 0;
+ struct smbd_server_connection *sconn = req->sconn;
+ int max_send = sconn->smb1.sessions.max_send;
if (buffer_too_large)
DEBUG(5,("send_trans_reply: buffer %d too large\n", ldata ));
align = ((this_lparam)%4);
- if (!create_outbuf(talloc_tos(), (char *)inbuf, &outbuf,
- 10, 1+align+this_ldata+this_lparam)) {
- smb_panic("could not allocate outbuf");
- }
+ reply_outbuf(req, 10, 1+align+this_ldata+this_lparam);
+
+ /*
+ * We might have SMBtranss in req which was transferred to the outbuf,
+ * fix that.
+ */
+ SCVAL(req->outbuf, smb_com, SMBtrans);
- copy_trans_params_and_data(outbuf, align,
+ copy_trans_params_and_data((char *)req->outbuf, align,
rparam, tot_param_sent, this_lparam,
rdata, tot_data_sent, this_ldata);
- SSVAL(outbuf,smb_vwv0,lparam);
- SSVAL(outbuf,smb_vwv1,ldata);
- SSVAL(outbuf,smb_vwv3,this_lparam);
- SSVAL(outbuf,smb_vwv4,smb_offset(smb_buf(outbuf)+1,outbuf));
- SSVAL(outbuf,smb_vwv5,0);
- SSVAL(outbuf,smb_vwv6,this_ldata);
- SSVAL(outbuf,smb_vwv7,smb_offset(smb_buf(outbuf)+1+this_lparam+align,
- outbuf));
- SSVAL(outbuf,smb_vwv8,0);
- SSVAL(outbuf,smb_vwv9,0);
+ SSVAL(req->outbuf,smb_vwv0,lparam);
+ SSVAL(req->outbuf,smb_vwv1,ldata);
+ SSVAL(req->outbuf,smb_vwv3,this_lparam);
+ SSVAL(req->outbuf,smb_vwv4,
+ smb_offset(smb_buf(req->outbuf)+1, req->outbuf));
+ SSVAL(req->outbuf,smb_vwv5,0);
+ SSVAL(req->outbuf,smb_vwv6,this_ldata);
+ SSVAL(req->outbuf,smb_vwv7,
+ smb_offset(smb_buf(req->outbuf)+1+this_lparam+align,
+ req->outbuf));
+ SSVAL(req->outbuf,smb_vwv8,0);
+ SSVAL(req->outbuf,smb_vwv9,0);
if (buffer_too_large) {
- error_packet_set((char *)outbuf, ERRDOS, ERRmoredata,
+ error_packet_set((char *)req->outbuf, ERRDOS, ERRmoredata,
STATUS_BUFFER_OVERFLOW, __LINE__, __FILE__);
}
- show_msg(outbuf);
- if (!srv_send_smb(smbd_server_fd(), (char *)outbuf,
- IS_CONN_ENCRYPTED(conn))) {
+ show_msg((char *)req->outbuf);
+ if (!srv_send_smb(sconn, (char *)req->outbuf,
+ true, req->seqnum+1,
+ IS_CONN_ENCRYPTED(conn), &req->pcd)) {
exit_server_cleanly("send_trans_reply: srv_send_smb failed.");
}
- TALLOC_FREE(outbuf);
+ TALLOC_FREE(req->outbuf);
tot_data_sent = this_ldata;
tot_param_sent = this_lparam;
align = (this_lparam%4);
- if (!create_outbuf(talloc_tos(), (char *)inbuf, &outbuf,
- 10, 1+align+this_ldata+this_lparam)) {
- smb_panic("could not allocate outbuf");
- }
+ reply_outbuf(req, 10, 1+align+this_ldata+this_lparam);
- copy_trans_params_and_data(outbuf, align,
+ /*
+ * We might have SMBtranss in req which was transferred to the
+ * outbuf, fix that.
+ */
+ SCVAL(req->outbuf, smb_com, SMBtrans);
+
+ copy_trans_params_and_data((char *)req->outbuf, align,
rparam, tot_param_sent, this_lparam,
rdata, tot_data_sent, this_ldata);
- SSVAL(outbuf,smb_vwv3,this_lparam);
- SSVAL(outbuf,smb_vwv4,smb_offset(smb_buf(outbuf)+1,outbuf));
- SSVAL(outbuf,smb_vwv5,tot_param_sent);
- SSVAL(outbuf,smb_vwv6,this_ldata);
- SSVAL(outbuf,smb_vwv7,
- smb_offset(smb_buf(outbuf)+1+this_lparam+align, outbuf));
- SSVAL(outbuf,smb_vwv8,tot_data_sent);
- SSVAL(outbuf,smb_vwv9,0);
+ SSVAL(req->outbuf,smb_vwv0,lparam);
+ SSVAL(req->outbuf,smb_vwv1,ldata);
+
+ SSVAL(req->outbuf,smb_vwv3,this_lparam);
+ SSVAL(req->outbuf,smb_vwv4,
+ smb_offset(smb_buf(req->outbuf)+1,req->outbuf));
+ SSVAL(req->outbuf,smb_vwv5,tot_param_sent);
+ SSVAL(req->outbuf,smb_vwv6,this_ldata);
+ SSVAL(req->outbuf,smb_vwv7,
+ smb_offset(smb_buf(req->outbuf)+1+this_lparam+align,
+ req->outbuf));
+ SSVAL(req->outbuf,smb_vwv8,tot_data_sent);
+ SSVAL(req->outbuf,smb_vwv9,0);
if (buffer_too_large) {
- error_packet_set(outbuf, ERRDOS, ERRmoredata,
+ error_packet_set((char *)req->outbuf,
+ ERRDOS, ERRmoredata,
STATUS_BUFFER_OVERFLOW,
__LINE__, __FILE__);
}
- show_msg(outbuf);
- if (!srv_send_smb(smbd_server_fd(), outbuf,
- IS_CONN_ENCRYPTED(conn)))
+ show_msg((char *)req->outbuf);
+ if (!srv_send_smb(sconn, (char *)req->outbuf,
+ true, req->seqnum+1,
+ IS_CONN_ENCRYPTED(conn), &req->pcd))
exit_server_cleanly("send_trans_reply: srv_send_smb "
"failed.");
tot_data_sent += this_ldata;
tot_param_sent += this_lparam;
- TALLOC_FREE(outbuf);
+ TALLOC_FREE(req->outbuf);
}
}
Start the first part of an RPC reply which began with an SMBtrans request.
****************************************************************************/
-static void api_rpc_trans_reply(connection_struct *conn,
- struct smb_request *req,
- files_struct *fsp,
- int max_trans_reply)
+struct dcerpc_cmd_state {
+ struct fake_file_handle *handle;
+ uint8_t *data;
+ size_t num_data;
+ size_t max_read;
+};
+
+static void api_dcerpc_cmd_write_done(struct tevent_req *subreq);
+static void api_dcerpc_cmd_read_done(struct tevent_req *subreq);
+
+static void api_dcerpc_cmd(connection_struct *conn, struct smb_request *req,
+ files_struct *fsp, uint8_t *data, size_t length,
+ size_t max_read)
{
- bool is_data_outstanding;
- uint8_t *rdata = SMB_MALLOC_ARRAY(uint8_t, max_trans_reply);
- ssize_t data_len;
- NTSTATUS status;
+ struct tevent_req *subreq;
+ struct dcerpc_cmd_state *state;
+ bool busy;
+
+ if (!fsp_is_np(fsp)) {
+ api_no_reply(conn, req);
+ return;
+ }
+
+ /*
+ * Trans requests are only allowed
+ * if no other Trans or Read is active
+ */
+ busy = np_read_in_progress(fsp->fake_file_handle);
+ if (busy) {
+ reply_nterror(req, NT_STATUS_PIPE_BUSY);
+ return;
+ }
+
+ state = talloc(req, struct dcerpc_cmd_state);
+ if (state == NULL) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ return;
+ }
+ req->async_priv = state;
+
+ state->handle = fsp->fake_file_handle;
+
+ /*
+ * This memdup severely sucks. But doing it properly essentially means
+ * to rewrite lanman.c, something which I don't really want to do now.
+ */
+ state->data = (uint8_t *)talloc_memdup(state, data, length);
+ if (state->data == NULL) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ return;
+ }
+ state->num_data = length;
+ state->max_read = max_read;
- if(rdata == NULL) {
- DEBUG(0,("api_rpc_trans_reply: malloc fail.\n"));
+ subreq = np_write_send(state, server_event_context(), state->handle,
+ state->data, length);
+ if (subreq == NULL) {
+ TALLOC_FREE(state);
reply_nterror(req, NT_STATUS_NO_MEMORY);
return;
}
+ tevent_req_set_callback(subreq, api_dcerpc_cmd_write_done,
+ talloc_move(conn, &req));
+}
+
+static void api_dcerpc_cmd_write_done(struct tevent_req *subreq)
+{
+ struct smb_request *req = tevent_req_callback_data(
+ subreq, struct smb_request);
+ struct dcerpc_cmd_state *state = talloc_get_type_abort(
+ req->async_priv, struct dcerpc_cmd_state);
+ NTSTATUS status;
+ ssize_t nwritten = -1;
+
+ status = np_write_recv(subreq, &nwritten);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status) || (nwritten != state->num_data)) {
+ DEBUG(10, ("Could not write to pipe: %s (%d/%d)\n",
+ nt_errstr(status), (int)state->num_data,
+ (int)nwritten));
+ reply_nterror(req, NT_STATUS_PIPE_NOT_AVAILABLE);
+ goto send;
+ }
+
+ state->data = talloc_realloc(state, state->data, uint8_t,
+ state->max_read);
+ if (state->data == NULL) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ goto send;
+ }
+
+ subreq = np_read_send(req->conn, server_event_context(),
+ state->handle, state->data, state->max_read);
+ if (subreq == NULL) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ goto send;
+ }
+ tevent_req_set_callback(subreq, api_dcerpc_cmd_read_done, req);
+ return;
+
+ send:
+ if (!srv_send_smb(
+ req->sconn, (char *)req->outbuf,
+ true, req->seqnum+1,
+ IS_CONN_ENCRYPTED(req->conn) || req->encrypted,
+ &req->pcd)) {
+ exit_server_cleanly("api_dcerpc_cmd_write_done: "
+ "srv_send_smb failed.");
+ }
+ TALLOC_FREE(req);
+}
+
+static void api_dcerpc_cmd_read_done(struct tevent_req *subreq)
+{
+ struct smb_request *req = tevent_req_callback_data(
+ subreq, struct smb_request);
+ struct dcerpc_cmd_state *state = talloc_get_type_abort(
+ req->async_priv, struct dcerpc_cmd_state);
+ NTSTATUS status;
+ ssize_t nread;
+ bool is_data_outstanding;
+
+ status = np_read_recv(subreq, &nread, &is_data_outstanding);
+ TALLOC_FREE(subreq);
- status = np_read(fsp, rdata, max_trans_reply, &data_len,
- &is_data_outstanding);
if (!NT_STATUS_IS_OK(status)) {
- SAFE_FREE(rdata);
- api_no_reply(conn,req);
+ DEBUG(10, ("Could not read from to pipe: %s\n",
+ nt_errstr(status)));
+ reply_nterror(req, status);
+
+ if (!srv_send_smb(req->sconn, (char *)req->outbuf,
+ true, req->seqnum+1,
+ IS_CONN_ENCRYPTED(req->conn)
+ ||req->encrypted, &req->pcd)) {
+ exit_server_cleanly("api_dcerpc_cmd_read_done: "
+ "srv_send_smb failed.");
+ }
+ TALLOC_FREE(req);
return;
}
- send_trans_reply(conn, req->inbuf, NULL, 0, (char *)rdata, data_len,
+ send_trans_reply(req->conn, req, NULL, 0, (char *)state->data, nread,
is_data_outstanding);
- SAFE_FREE(rdata);
- return;
+ TALLOC_FREE(req);
}
/****************************************************************************
DEBUG(4,("WaitNamedPipeHandleState priority %x\n",
(int)SVAL(param,0)));
- send_trans_reply(conn, req->inbuf, NULL, 0, NULL, 0, False);
+ send_trans_reply(conn, req, NULL, 0, NULL, 0, False);
}
DEBUG(4,("SetNamedPipeHandleState to code %x\n", (int)SVAL(param,0)));
- send_trans_reply(conn, req->inbuf, NULL, 0, NULL, 0, False);
+ send_trans_reply(conn, req, NULL, 0, NULL, 0, False);
}
DEBUG(3,("Unsupported API fd command\n"));
/* now send the reply */
- send_trans_reply(conn, req->inbuf, rparam, 4, NULL, 0, False);
+ send_trans_reply(conn, req, rparam, 4, NULL, 0, False);
return;
}
struct files_struct *fsp;
int pnum;
int subcommand;
- NTSTATUS status;
DEBUG(5,("api_fd_reply\n"));
/* Win9x does this call with a unicode pipe name, not a pnum. */
/* Just return success for now... */
DEBUG(3,("Got TRANSACT_WAITNAMEDPIPEHANDLESTATE on text pipe name\n"));
- send_trans_reply(conn, req->inbuf, NULL, 0, NULL, 0,
- False);
+ send_trans_reply(conn, req, NULL, 0, NULL, 0, False);
return;
}
}
DEBUG(3,("Got API command 0x%x on pipe \"%s\" (pnum %x)\n",
- subcommand, fsp->fsp_name, pnum));
+ subcommand, fsp_str_dbg(fsp), pnum));
DEBUG(10, ("api_fd_reply: p:%p max_trans_reply: %d\n", fsp, mdrcnt));
switch (subcommand) {
case TRANSACT_DCERPCCMD: {
/* dce/rpc command */
- ssize_t nwritten;
- status = np_write(fsp, data, tdscnt, &nwritten);
- if (!NT_STATUS_IS_OK(status)) {
- api_no_reply(conn, req);
- return;
- }
- api_rpc_trans_reply(conn, req, fsp, mdrcnt);
+ api_dcerpc_cmd(conn, req, fsp, (uint8_t *)data, tdscnt,
+ mdrcnt);
break;
}
case TRANSACT_WAITNAMEDPIPEHANDLESTATE:
unsigned int pscnt;
struct trans_state *state;
NTSTATUS result;
- unsigned int size;
- unsigned int av_size;
START_PROFILE(SMBtrans);
return;
}
- size = smb_len(req->inbuf) + 4;
- av_size = smb_len(req->inbuf);
- dsoff = SVAL(req->inbuf, smb_dsoff);
- dscnt = SVAL(req->inbuf, smb_dscnt);
- psoff = SVAL(req->inbuf, smb_psoff);
- pscnt = SVAL(req->inbuf, smb_pscnt);
+ dsoff = SVAL(req->vwv+12, 0);
+ dscnt = SVAL(req->vwv+11, 0);
+ psoff = SVAL(req->vwv+10, 0);
+ pscnt = SVAL(req->vwv+9, 0);
result = allow_new_trans(conn->pending_trans, req->mid);
if (!NT_STATUS_IS_OK(result)) {
state->mid = req->mid;
state->vuid = req->vuid;
- state->setup_count = CVAL(req->inbuf, smb_suwcnt);
+ state->setup_count = CVAL(req->vwv+13, 0);
state->setup = NULL;
- state->total_param = SVAL(req->inbuf, smb_tpscnt);
+ state->total_param = SVAL(req->vwv+0, 0);
state->param = NULL;
- state->total_data = SVAL(req->inbuf, smb_tdscnt);
+ state->total_data = SVAL(req->vwv+1, 0);
state->data = NULL;
- state->max_param_return = SVAL(req->inbuf, smb_mprcnt);
- state->max_data_return = SVAL(req->inbuf, smb_mdrcnt);
- state->max_setup_return = CVAL(req->inbuf, smb_msrcnt);
- state->close_on_completion = BITSETW(req->inbuf+smb_vwv5,0);
- state->one_way = BITSETW(req->inbuf+smb_vwv5,1);
+ state->max_param_return = SVAL(req->vwv+2, 0);
+ state->max_data_return = SVAL(req->vwv+3, 0);
+ state->max_setup_return = CVAL(req->vwv+4, 0);
+ state->close_on_completion = BITSETW(req->vwv+5, 0);
+ state->one_way = BITSETW(req->vwv+5, 1);
- srvstr_pull_buf_talloc(state, req->inbuf, req->flags2, &state->name,
- smb_buf(req->inbuf), STR_TERMINATE);
+ srvstr_pull_req_talloc(state, req, &state->name, req->buf,
+ STR_TERMINATE);
if ((dscnt > state->total_data) || (pscnt > state->total_param) ||
!state->name)
goto bad_param;
if (state->total_data) {
+
+ if (trans_oob(state->total_data, 0, dscnt)
+ || trans_oob(smb_len(req->inbuf), dsoff, dscnt)) {
+ goto bad_param;
+ }
+
/* Can't use talloc here, the core routines do realloc on the
* params and data. Out of paranoia, 100 bytes too many. */
state->data = (char *)SMB_MALLOC(state->total_data+100);
/* null-terminate the slack space */
memset(&state->data[state->total_data], 0, 100);
- if (dscnt > state->total_data ||
- dsoff+dscnt < dsoff) {
- goto bad_param;
- }
-
- if (dsoff > av_size ||
- dscnt > av_size ||
- dsoff+dscnt > av_size) {
- goto bad_param;
- }
-
memcpy(state->data,smb_base(req->inbuf)+dsoff,dscnt);
}
if (state->total_param) {
+
+ if (trans_oob(state->total_param, 0, pscnt)
+ || trans_oob(smb_len(req->inbuf), psoff, pscnt)) {
+ goto bad_param;
+ }
+
/* Can't use talloc here, the core routines do realloc on the
* params and data. Out of paranoia, 100 bytes too many */
state->param = (char *)SMB_MALLOC(state->total_param+100);
/* null-terminate the slack space */
memset(&state->param[state->total_param], 0, 100);
- if (pscnt > state->total_param ||
- psoff+pscnt < psoff) {
- goto bad_param;
- }
-
- if (psoff > av_size ||
- pscnt > av_size ||
- psoff+pscnt > av_size) {
- goto bad_param;
- }
-
memcpy(state->param,smb_base(req->inbuf)+psoff,pscnt);
}
if (state->setup_count) {
unsigned int i;
+
+ /*
+ * No overflow possible here, state->setup_count is an
+ * unsigned int, being filled by a single byte from
+ * CVAL(req->vwv+13, 0) above. The cast in the comparison
+ * below is not necessary, it's here to clarify things. The
+ * validity of req->vwv and req->wct has been checked in
+ * init_smb_request already.
+ */
+ if (state->setup_count + 14 > (unsigned int)req->wct) {
+ goto bad_param;
+ }
+
if((state->setup = TALLOC_ARRAY(
state, uint16, state->setup_count)) == NULL) {
DEBUG(0,("reply_trans: setup malloc fail for %u "
END_PROFILE(SMBtrans);
return;
}
- if (req->inbuf+smb_vwv14+(state->setup_count*SIZEOFWORD) >
- req->inbuf + size)
- goto bad_param;
- if ((smb_vwv14+(state->setup_count*SIZEOFWORD) < smb_vwv14) ||
- (smb_vwv14+(state->setup_count*SIZEOFWORD) <
- (state->setup_count*SIZEOFWORD)))
- goto bad_param;
- for (i=0;i<state->setup_count;i++)
- state->setup[i] = SVAL(req->inbuf,
- smb_vwv14+i*SIZEOFWORD);
+ for (i=0;i<state->setup_count;i++) {
+ state->setup[i] = SVAL(req->vwv + 14 + i, 0);
+ }
}
state->received_param = pscnt;
return;
}
+ talloc_steal(talloc_tos(), state);
+
handle_trans(conn, req, state);
SAFE_FREE(state->data);
connection_struct *conn = req->conn;
unsigned int pcnt,poff,dcnt,doff,pdisp,ddisp;
struct trans_state *state;
- unsigned int av_size;
START_PROFILE(SMBtranss);
- show_msg((char *)req->inbuf);
+ show_msg((const char *)req->inbuf);
if (req->wct < 8) {
reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
/* Revise total_params and total_data in case they have changed
* downwards */
- if (SVAL(req->inbuf, smb_vwv0) < state->total_param)
- state->total_param = SVAL(req->inbuf,smb_vwv0);
- if (SVAL(req->inbuf, smb_vwv1) < state->total_data)
- state->total_data = SVAL(req->inbuf,smb_vwv1);
+ if (SVAL(req->vwv+0, 0) < state->total_param)
+ state->total_param = SVAL(req->vwv+0, 0);
+ if (SVAL(req->vwv+1, 0) < state->total_data)
+ state->total_data = SVAL(req->vwv+1, 0);
- av_size = smb_len(req->inbuf);
+ pcnt = SVAL(req->vwv+2, 0);
+ poff = SVAL(req->vwv+3, 0);
+ pdisp = SVAL(req->vwv+4, 0);
- pcnt = SVAL(req->inbuf, smb_spscnt);
- poff = SVAL(req->inbuf, smb_spsoff);
- pdisp = SVAL(req->inbuf, smb_spsdisp);
-
- dcnt = SVAL(req->inbuf, smb_sdscnt);
- doff = SVAL(req->inbuf, smb_sdsoff);
- ddisp = SVAL(req->inbuf, smb_sdsdisp);
+ dcnt = SVAL(req->vwv+5, 0);
+ doff = SVAL(req->vwv+6, 0);
+ ddisp = SVAL(req->vwv+7, 0);
state->received_param += pcnt;
state->received_data += dcnt;
goto bad_param;
if (pcnt) {
- if (pdisp > state->total_param ||
- pcnt > state->total_param ||
- pdisp+pcnt > state->total_param ||
- pdisp+pcnt < pdisp) {
- goto bad_param;
- }
-
- if (poff > av_size ||
- pcnt > av_size ||
- poff+pcnt > av_size ||
- poff+pcnt < poff) {
+ if (trans_oob(state->total_param, pdisp, pcnt)
+ || trans_oob(smb_len(req->inbuf), poff, pcnt)) {
goto bad_param;
}
-
- memcpy(state->param+pdisp,smb_base(req->inbuf)+poff,
- pcnt);
+ memcpy(state->param+pdisp,smb_base(req->inbuf)+poff,pcnt);
}
if (dcnt) {
- if (ddisp > state->total_data ||
- dcnt > state->total_data ||
- ddisp+dcnt > state->total_data ||
- ddisp+dcnt < ddisp) {
- goto bad_param;
- }
-
- if (ddisp > av_size ||
- dcnt > av_size ||
- ddisp+dcnt > av_size ||
- ddisp+dcnt < ddisp) {
+ if (trans_oob(state->total_data, ddisp, dcnt)
+ || trans_oob(smb_len(req->inbuf), doff, dcnt)) {
goto bad_param;
}
-
- memcpy(state->data+ddisp, smb_base(req->inbuf)+doff,
- dcnt);
+ memcpy(state->data+ddisp, smb_base(req->inbuf)+doff,dcnt);
}
if ((state->received_param < state->total_param) ||
return;
}
- /*
- * construct_reply_common will copy smb_com from inbuf to
- * outbuf. SMBtranss is wrong here.
- */
- SCVAL(req->inbuf,smb_com,SMBtrans);
+ talloc_steal(talloc_tos(), state);
handle_trans(conn, req, state);
git.samba.org / ira / wip.git / blobdiff