-/*
+/*
Unix SMB/CIFS implementation.
client transaction calls
Copyright (C) Andrew Tridgell 1994-1998
-
+
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,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#define NO_SYSLOG
-
#include "includes.h"
-
-
-/****************************************************************************
- Send a SMB trans or trans2 request.
-****************************************************************************/
-
-BOOL cli_send_trans(struct cli_state *cli, int trans,
- const char *pipe_name,
- int fid, int flags,
- uint16 *setup, unsigned int lsetup, unsigned int msetup,
- const char *param, unsigned int lparam, unsigned int mparam,
- const char *data, unsigned int ldata, unsigned int mdata)
+#include "libsmb/libsmb.h"
+#include "../lib/util/tevent_ntstatus.h"
+#include "async_smb.h"
+#include "../libcli/smb/smbXcli_base.h"
+
+struct cli_trans_state {
+ struct cli_state *cli;
+ struct tevent_req *subreq;
+ uint16_t recv_flags2;
+ uint16_t *setup;
+ uint8_t num_setup;
+ uint8_t *param;
+ uint32_t num_param;
+ uint8_t *data;
+ uint32_t num_data;
+};
+
+static void cli_trans_done(struct tevent_req *subreq);
+static bool cli_trans_cancel(struct tevent_req *req);
+
+struct tevent_req *cli_trans_send(
+ TALLOC_CTX *mem_ctx, struct tevent_context *ev,
+ struct cli_state *cli, uint16_t additional_flags2, uint8_t cmd,
+ const char *pipe_name, uint16_t fid, uint16_t function, int flags,
+ uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
+ uint8_t *param, uint32_t num_param, uint32_t max_param,
+ uint8_t *data, uint32_t num_data, uint32_t max_data)
{
- unsigned int i;
- unsigned int this_ldata,this_lparam;
- unsigned int tot_data=0,tot_param=0;
- char *outdata,*outparam;
- char *p;
- int pipe_name_len=0;
- uint16 mid;
-
- this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
- this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
-
- memset(cli->outbuf,'\0',smb_size);
- set_message(cli->outbuf,14+lsetup,0,True);
- SCVAL(cli->outbuf,smb_com,trans);
- SSVAL(cli->outbuf,smb_tid, cli->cnum);
- cli_setup_packet(cli);
-
- /*
- * Save the mid we're using. We need this for finding
- * signing replies.
- */
-
- mid = cli->mid;
-
- if (pipe_name) {
- pipe_name_len = clistr_push(cli, smb_buf(cli->outbuf), pipe_name, -1, STR_TERMINATE);
- }
-
- outparam = smb_buf(cli->outbuf)+(trans==SMBtrans ? pipe_name_len : 3);
- outdata = outparam+this_lparam;
-
- /* primary request */
- SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
- SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
- SSVAL(cli->outbuf,smb_mprcnt,mparam); /* mprcnt */
- SSVAL(cli->outbuf,smb_mdrcnt,mdata); /* mdrcnt */
- SCVAL(cli->outbuf,smb_msrcnt,msetup); /* msrcnt */
- SSVAL(cli->outbuf,smb_flags,flags); /* flags */
- SIVAL(cli->outbuf,smb_timeout,0); /* timeout */
- SSVAL(cli->outbuf,smb_pscnt,this_lparam); /* pscnt */
- SSVAL(cli->outbuf,smb_psoff,smb_offset(outparam,cli->outbuf)); /* psoff */
- SSVAL(cli->outbuf,smb_dscnt,this_ldata); /* dscnt */
- SSVAL(cli->outbuf,smb_dsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
- SCVAL(cli->outbuf,smb_suwcnt,lsetup); /* suwcnt */
- for (i=0;i<lsetup;i++) /* setup[] */
- SSVAL(cli->outbuf,smb_setup+i*2,setup[i]);
- p = smb_buf(cli->outbuf);
- if (trans != SMBtrans) {
- *p++ = 0; /* put in a null smb_name */
- *p++ = 'D'; *p++ = ' '; /* observed in OS/2 */
- }
- if (this_lparam) /* param[] */
- memcpy(outparam,param,this_lparam);
- if (this_ldata) /* data[] */
- memcpy(outdata,data,this_ldata);
- cli_setup_bcc(cli, outdata+this_ldata);
-
- show_msg(cli->outbuf);
-
- if (!cli_send_smb(cli)) {
- return False;
- }
-
- if (this_ldata < ldata || this_lparam < lparam) {
- /* receive interim response */
- if (!cli_receive_smb(cli) || cli_is_error(cli)) {
- return(False);
- }
-
- tot_data = this_ldata;
- tot_param = this_lparam;
-
- while (tot_data < ldata || tot_param < lparam) {
- this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
- this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
-
- set_message(cli->outbuf,trans==SMBtrans?8:9,0,True);
- SCVAL(cli->outbuf,smb_com,(trans==SMBtrans ? SMBtranss : SMBtranss2));
-
- outparam = smb_buf(cli->outbuf);
- outdata = outparam+this_lparam;
-
- /* secondary request */
- SSVAL(cli->outbuf,smb_tpscnt,lparam); /* tpscnt */
- SSVAL(cli->outbuf,smb_tdscnt,ldata); /* tdscnt */
- SSVAL(cli->outbuf,smb_spscnt,this_lparam); /* pscnt */
- SSVAL(cli->outbuf,smb_spsoff,smb_offset(outparam,cli->outbuf)); /* psoff */
- SSVAL(cli->outbuf,smb_spsdisp,tot_param); /* psdisp */
- SSVAL(cli->outbuf,smb_sdscnt,this_ldata); /* dscnt */
- SSVAL(cli->outbuf,smb_sdsoff,smb_offset(outdata,cli->outbuf)); /* dsoff */
- SSVAL(cli->outbuf,smb_sdsdisp,tot_data); /* dsdisp */
- if (trans==SMBtrans2)
- SSVALS(cli->outbuf,smb_sfid,fid); /* fid */
- if (this_lparam) /* param[] */
- memcpy(outparam,param+tot_param,this_lparam);
- if (this_ldata) /* data[] */
- memcpy(outdata,data+tot_data,this_ldata);
- cli_setup_bcc(cli, outdata+this_ldata);
-
- /*
- * Save the mid we're using. We need this for finding
- * signing replies.
- */
- mid = cli->mid;
-
- show_msg(cli->outbuf);
- if (!cli_send_smb(cli)) {
- return False;
- }
-
- /* Ensure we use the same mid for the secondaries. */
- cli->mid = mid;
-
- tot_data += this_ldata;
- tot_param += this_lparam;
- }
- }
-
- /* Note we're in a trans state. Save the sequence
- * numbers for replies. */
-
- cli_signing_trans_start(cli, mid);
- return(True);
+ struct tevent_req *req;
+ struct cli_trans_state *state;
+ uint8_t additional_flags = 0;
+ uint8_t clear_flags = 0;
+ uint16_t clear_flags2 = 0;
+
+ req = tevent_req_create(mem_ctx, &state, struct cli_trans_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->cli = cli;
+
+ state->subreq = smb1cli_trans_send(state, ev,
+ cli->conn, cmd,
+ additional_flags, clear_flags,
+ additional_flags2, clear_flags2,
+ cli->timeout,
+ cli->smb1.pid,
+ cli->smb1.tcon,
+ cli->smb1.session,
+ pipe_name, fid, function, flags,
+ setup, num_setup, max_setup,
+ param, num_param, max_param,
+ data, num_data, max_data);
+ if (tevent_req_nomem(state->subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(state->subreq, cli_trans_done, req);
+ tevent_req_set_cancel_fn(req, cli_trans_cancel);
+ return req;
}
-/****************************************************************************
- Receive a SMB trans or trans2 response allocating the necessary memory.
-****************************************************************************/
-
-BOOL cli_receive_trans(struct cli_state *cli,int trans,
- char **param, unsigned int *param_len,
- char **data, unsigned int *data_len)
+static bool cli_trans_cancel(struct tevent_req *req)
{
- unsigned int total_data=0;
- unsigned int total_param=0;
- unsigned int this_data,this_param;
- NTSTATUS status;
- char *tdata;
- char *tparam;
-
- *data_len = *param_len = 0;
-
- if (!cli_receive_smb(cli)) {
- cli_signing_trans_stop(cli);
- return False;
- }
-
- show_msg(cli->inbuf);
-
- /* sanity check */
- if (CVAL(cli->inbuf,smb_com) != trans) {
- DEBUG(0,("Expected %s response, got command 0x%02x\n",
- trans==SMBtrans?"SMBtrans":"SMBtrans2",
- CVAL(cli->inbuf,smb_com)));
- cli_signing_trans_stop(cli);
- return(False);
- }
-
- /*
- * An NT RPC pipe call can return ERRDOS, ERRmoredata
- * to a trans call. This is not an error and should not
- * be treated as such. Note that STATUS_NO_MORE_FILES is
- * returned when a trans2 findfirst/next finishes.
- */
- status = cli_nt_error(cli);
-
- if (NT_STATUS_IS_ERR(status) || NT_STATUS_EQUAL(status,STATUS_NO_MORE_FILES)) {
- cli_signing_trans_stop(cli);
- return False;
- }
-
- /* parse out the lengths */
- total_data = SVAL(cli->inbuf,smb_tdrcnt);
- total_param = SVAL(cli->inbuf,smb_tprcnt);
-
- /* allocate it */
- if (total_data!=0) {
- tdata = SMB_REALLOC(*data,total_data);
- if (!tdata) {
- DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
- else
- *data = tdata;
- }
-
- if (total_param!=0) {
- tparam = SMB_REALLOC(*param,total_param);
- if (!tparam) {
- DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
- else
- *param = tparam;
- }
-
- for (;;) {
- this_data = SVAL(cli->inbuf,smb_drcnt);
- this_param = SVAL(cli->inbuf,smb_prcnt);
-
- if (this_data + *data_len > total_data ||
- this_param + *param_len > total_param) {
- DEBUG(1,("Data overflow in cli_receive_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
-
- if (this_data + *data_len < this_data ||
- this_data + *data_len < *data_len ||
- this_param + *param_len < this_param ||
- this_param + *param_len < *param_len) {
- DEBUG(1,("Data overflow in cli_receive_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
+ struct cli_trans_state *state = tevent_req_data(
+ req, struct cli_trans_state);
+ bool ok;
- if (this_data) {
- unsigned int data_offset_out = SVAL(cli->inbuf,smb_drdisp);
- unsigned int data_offset_in = SVAL(cli->inbuf,smb_droff);
-
- if (data_offset_out > total_data ||
- data_offset_out + this_data > total_data ||
- data_offset_out + this_data < data_offset_out ||
- data_offset_out + this_data < this_data) {
- DEBUG(1,("Data overflow in cli_receive_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
- if (data_offset_in > cli->bufsize ||
- data_offset_in + this_data > cli->bufsize ||
- data_offset_in + this_data < data_offset_in ||
- data_offset_in + this_data < this_data) {
- DEBUG(1,("Data overflow in cli_receive_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
-
- memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
- }
- if (this_param) {
- unsigned int param_offset_out = SVAL(cli->inbuf,smb_prdisp);
- unsigned int param_offset_in = SVAL(cli->inbuf,smb_proff);
-
- if (param_offset_out > total_param ||
- param_offset_out + this_param > total_param ||
- param_offset_out + this_param < param_offset_out ||
- param_offset_out + this_param < this_param) {
- DEBUG(1,("Param overflow in cli_receive_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
- if (param_offset_in > cli->bufsize ||
- param_offset_in + this_param > cli->bufsize ||
- param_offset_in + this_param < param_offset_in ||
- param_offset_in + this_param < this_param) {
- DEBUG(1,("Param overflow in cli_receive_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
-
- memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
- }
- *data_len += this_data;
- *param_len += this_param;
-
- if (total_data <= *data_len && total_param <= *param_len)
- break;
-
- if (!cli_receive_smb(cli)) {
- cli_signing_trans_stop(cli);
- return False;
- }
-
- show_msg(cli->inbuf);
-
- /* sanity check */
- if (CVAL(cli->inbuf,smb_com) != trans) {
- DEBUG(0,("Expected %s response, got command 0x%02x\n",
- trans==SMBtrans?"SMBtrans":"SMBtrans2",
- CVAL(cli->inbuf,smb_com)));
- cli_signing_trans_stop(cli);
- return(False);
- }
- if (NT_STATUS_IS_ERR(cli_nt_error(cli))) {
- cli_signing_trans_stop(cli);
- return(False);
- }
-
- /* parse out the total lengths again - they can shrink! */
- if (SVAL(cli->inbuf,smb_tdrcnt) < total_data)
- total_data = SVAL(cli->inbuf,smb_tdrcnt);
- if (SVAL(cli->inbuf,smb_tprcnt) < total_param)
- total_param = SVAL(cli->inbuf,smb_tprcnt);
-
- if (total_data <= *data_len && total_param <= *param_len)
- break;
-
- }
-
- cli_signing_trans_stop(cli);
- return(True);
+ ok = tevent_req_cancel(state->subreq);
+ return ok;
}
-/****************************************************************************
- Send a SMB nttrans request.
-****************************************************************************/
-
-BOOL cli_send_nt_trans(struct cli_state *cli,
- int function,
- int flags,
- uint16 *setup, unsigned int lsetup, unsigned int msetup,
- char *param, unsigned int lparam, unsigned int mparam,
- char *data, unsigned int ldata, unsigned int mdata)
+static void cli_trans_done(struct tevent_req *subreq)
{
- unsigned int i;
- unsigned int this_ldata,this_lparam;
- unsigned int tot_data=0,tot_param=0;
- uint16 mid;
- char *outdata,*outparam;
-
- this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
- this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
-
- memset(cli->outbuf,'\0',smb_size);
- set_message(cli->outbuf,19+lsetup,0,True);
- SCVAL(cli->outbuf,smb_com,SMBnttrans);
- SSVAL(cli->outbuf,smb_tid, cli->cnum);
- cli_setup_packet(cli);
-
- /*
- * Save the mid we're using. We need this for finding
- * signing replies.
- */
-
- mid = cli->mid;
-
- outparam = smb_buf(cli->outbuf)+3;
- outdata = outparam+this_lparam;
-
- /* primary request */
- SCVAL(cli->outbuf,smb_nt_MaxSetupCount,msetup);
- SCVAL(cli->outbuf,smb_nt_Flags,flags);
- SIVAL(cli->outbuf,smb_nt_TotalParameterCount, lparam);
- SIVAL(cli->outbuf,smb_nt_TotalDataCount, ldata);
- SIVAL(cli->outbuf,smb_nt_MaxParameterCount, mparam);
- SIVAL(cli->outbuf,smb_nt_MaxDataCount, mdata);
- SIVAL(cli->outbuf,smb_nt_ParameterCount, this_lparam);
- SIVAL(cli->outbuf,smb_nt_ParameterOffset, smb_offset(outparam,cli->outbuf));
- SIVAL(cli->outbuf,smb_nt_DataCount, this_ldata);
- SIVAL(cli->outbuf,smb_nt_DataOffset, smb_offset(outdata,cli->outbuf));
- SIVAL(cli->outbuf,smb_nt_SetupCount, lsetup);
- SIVAL(cli->outbuf,smb_nt_Function, function);
- for (i=0;i<lsetup;i++) /* setup[] */
- SSVAL(cli->outbuf,smb_nt_SetupStart+i*2,setup[i]);
-
- if (this_lparam) /* param[] */
- memcpy(outparam,param,this_lparam);
- if (this_ldata) /* data[] */
- memcpy(outdata,data,this_ldata);
-
- cli_setup_bcc(cli, outdata+this_ldata);
-
- show_msg(cli->outbuf);
- if (!cli_send_smb(cli)) {
- return False;
- }
-
- if (this_ldata < ldata || this_lparam < lparam) {
- /* receive interim response */
- if (!cli_receive_smb(cli) || cli_is_error(cli)) {
- return(False);
- }
-
- tot_data = this_ldata;
- tot_param = this_lparam;
-
- while (tot_data < ldata || tot_param < lparam) {
- this_lparam = MIN(lparam-tot_param,cli->max_xmit - 500); /* hack */
- this_ldata = MIN(ldata-tot_data,cli->max_xmit - (500+this_lparam));
-
- set_message(cli->outbuf,18,0,True);
- SCVAL(cli->outbuf,smb_com,SMBnttranss);
-
- /* XXX - these should probably be aligned */
- outparam = smb_buf(cli->outbuf);
- outdata = outparam+this_lparam;
-
- /* secondary request */
- SIVAL(cli->outbuf,smb_nts_TotalParameterCount,lparam);
- SIVAL(cli->outbuf,smb_nts_TotalDataCount,ldata);
- SIVAL(cli->outbuf,smb_nts_ParameterCount,this_lparam);
- SIVAL(cli->outbuf,smb_nts_ParameterOffset,smb_offset(outparam,cli->outbuf));
- SIVAL(cli->outbuf,smb_nts_ParameterDisplacement,tot_param);
- SIVAL(cli->outbuf,smb_nts_DataCount,this_ldata);
- SIVAL(cli->outbuf,smb_nts_DataOffset,smb_offset(outdata,cli->outbuf));
- SIVAL(cli->outbuf,smb_nts_DataDisplacement,tot_data);
- if (this_lparam) /* param[] */
- memcpy(outparam,param+tot_param,this_lparam);
- if (this_ldata) /* data[] */
- memcpy(outdata,data+tot_data,this_ldata);
- cli_setup_bcc(cli, outdata+this_ldata);
-
- /*
- * Save the mid we're using. We need this for finding
- * signing replies.
- */
- mid = cli->mid;
-
- show_msg(cli->outbuf);
-
- if (!cli_send_smb(cli)) {
- return False;
- }
-
- /* Ensure we use the same mid for the secondaries. */
- cli->mid = mid;
-
- tot_data += this_ldata;
- tot_param += this_lparam;
- }
- }
-
- /* Note we're in a trans state. Save the sequence
- * numbers for replies. */
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cli_trans_state *state = tevent_req_data(
+ req, struct cli_trans_state);
+ NTSTATUS status;
- cli_signing_trans_start(cli, mid);
- return(True);
+ status = smb1cli_trans_recv(
+ subreq,
+ state,
+ &state->recv_flags2,
+ &state->setup, 0, &state->num_setup,
+ &state->param, 0, &state->num_param,
+ &state->data, 0, &state->num_data);
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+ tevent_req_done(req);
}
-/****************************************************************************
- receive a SMB nttrans response allocating the necessary memory
- ****************************************************************************/
-
-BOOL cli_receive_nt_trans(struct cli_state *cli,
- char **param, unsigned int *param_len,
- char **data, unsigned int *data_len)
+NTSTATUS cli_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
+ uint16_t *recv_flags2,
+ uint16_t **setup, uint8_t min_setup,
+ uint8_t *num_setup,
+ uint8_t **param, uint32_t min_param,
+ uint32_t *num_param,
+ uint8_t **data, uint32_t min_data,
+ uint32_t *num_data)
{
- unsigned int total_data=0;
- unsigned int total_param=0;
- unsigned int this_data,this_param;
- uint8 eclass;
- uint32 ecode;
- char *tdata;
- char *tparam;
-
- *data_len = *param_len = 0;
+ struct cli_trans_state *state = tevent_req_data(
+ req, struct cli_trans_state);
+ NTSTATUS status = NT_STATUS_OK;
+ bool map_dos_errors = true;
- if (!cli_receive_smb(cli)) {
- cli_signing_trans_stop(cli);
- return False;
+ if (tevent_req_is_nterror(req, &status)) {
+ goto map_error;
}
- show_msg(cli->inbuf);
-
- /* sanity check */
- if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
- DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
- CVAL(cli->inbuf,smb_com)));
- cli_signing_trans_stop(cli);
- return(False);
+ if ((state->num_setup < min_setup) ||
+ (state->num_param < min_param) ||
+ (state->num_data < min_data)) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
- /*
- * An NT RPC pipe call can return ERRDOS, ERRmoredata
- * to a trans call. This is not an error and should not
- * be treated as such.
- */
- if (cli_is_dos_error(cli)) {
- cli_dos_error(cli, &eclass, &ecode);
- if (cli->pipes[cli->pipe_idx].fnum == 0 || !(eclass == ERRDOS && ecode == ERRmoredata)) {
- cli_signing_trans_stop(cli);
- return(False);
- }
+ if (recv_flags2 != NULL) {
+ *recv_flags2 = state->recv_flags2;
}
-
- /*
- * Likewise for NT_STATUS_BUFFER_TOO_SMALL
- */
- if (cli_is_nt_error(cli)) {
- if (!NT_STATUS_EQUAL(cli_nt_error(cli),
- NT_STATUS_BUFFER_TOO_SMALL)) {
- cli_signing_trans_stop(cli);
- return(False);
- }
+ if (setup != NULL) {
+ *setup = talloc_move(mem_ctx, &state->setup);
+ *num_setup = state->num_setup;
}
-
- /* parse out the lengths */
- total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
- total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
-
- /* allocate it */
- if (total_data) {
- tdata = SMB_REALLOC(*data,total_data);
- if (!tdata) {
- DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data));
- cli_signing_trans_stop(cli);
- return False;
- } else {
- *data = tdata;
- }
+ if (param != NULL) {
+ *param = talloc_move(mem_ctx, &state->param);
+ *num_param = state->num_param;
}
-
- if (total_param) {
- tparam = SMB_REALLOC(*param,total_param);
- if (!tparam) {
- DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param));
- cli_signing_trans_stop(cli);
- return False;
- } else {
- *param = tparam;
- }
+ if (data != NULL) {
+ *data = talloc_move(mem_ctx, &state->data);
+ *num_data = state->num_data;
}
- while (1) {
- this_data = SVAL(cli->inbuf,smb_ntr_DataCount);
- this_param = SVAL(cli->inbuf,smb_ntr_ParameterCount);
-
- if (this_data + *data_len > total_data ||
- this_param + *param_len > total_param) {
- DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
+map_error:
+ map_dos_errors = state->cli->map_dos_errors;
- if (this_data + *data_len < this_data ||
- this_data + *data_len < *data_len ||
- this_param + *param_len < this_param ||
- this_param + *param_len < *param_len) {
- DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
-
- if (this_data) {
- unsigned int data_offset_out = SVAL(cli->inbuf,smb_ntr_DataDisplacement);
- unsigned int data_offset_in = SVAL(cli->inbuf,smb_ntr_DataOffset);
-
- if (data_offset_out > total_data ||
- data_offset_out + this_data > total_data ||
- data_offset_out + this_data < data_offset_out ||
- data_offset_out + this_data < this_data) {
- DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
- if (data_offset_in > cli->bufsize ||
- data_offset_in + this_data > cli->bufsize ||
- data_offset_in + this_data < data_offset_in ||
- data_offset_in + this_data < this_data) {
- DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
-
- memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
- }
-
- if (this_param) {
- unsigned int param_offset_out = SVAL(cli->inbuf,smb_ntr_ParameterDisplacement);
- unsigned int param_offset_in = SVAL(cli->inbuf,smb_ntr_ParameterOffset);
-
- if (param_offset_out > total_param ||
- param_offset_out + this_param > total_param ||
- param_offset_out + this_param < param_offset_out ||
- param_offset_out + this_param < this_param) {
- DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
- if (param_offset_in > cli->bufsize ||
- param_offset_in + this_param > cli->bufsize ||
- param_offset_in + this_param < param_offset_in ||
- param_offset_in + this_param < this_param) {
- DEBUG(1,("Param overflow in cli_receive_nt_trans\n"));
- cli_signing_trans_stop(cli);
- return False;
- }
-
- memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
- }
-
- *data_len += this_data;
- *param_len += this_param;
+ if (NT_STATUS_IS_DOS(status) && map_dos_errors) {
+ uint8_t eclass = NT_STATUS_DOS_CLASS(status);
+ uint16_t ecode = NT_STATUS_DOS_CODE(status);
+ /*
+ * TODO: is it really a good idea to do a mapping here?
+ *
+ * The old cli_pull_error() also does it, so I do not change
+ * the behavior yet.
+ */
+ status = dos_to_ntstatus(eclass, ecode);
+ }
- if (total_data <= *data_len && total_param <= *param_len)
- break;
-
- if (!cli_receive_smb(cli)) {
- cli_signing_trans_stop(cli);
- return False;
- }
+ return status;
+}
- show_msg(cli->inbuf);
-
- /* sanity check */
- if (CVAL(cli->inbuf,smb_com) != SMBnttrans) {
- DEBUG(0,("Expected SMBnttrans response, got command 0x%02x\n",
- CVAL(cli->inbuf,smb_com)));
- cli_signing_trans_stop(cli);
- return(False);
- }
- if (cli_is_dos_error(cli)) {
- cli_dos_error(cli, &eclass, &ecode);
- if(cli->pipes[cli->pipe_idx].fnum == 0 || !(eclass == ERRDOS && ecode == ERRmoredata)) {
- cli_signing_trans_stop(cli);
- return(False);
- }
- }
- /* parse out the total lengths again - they can shrink! */
- if (SVAL(cli->inbuf,smb_ntr_TotalDataCount) < total_data)
- total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
- if (SVAL(cli->inbuf,smb_ntr_TotalParameterCount) < total_param)
- total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
-
- if (total_data <= *data_len && total_param <= *param_len)
- break;
- }
-
- cli_signing_trans_stop(cli);
- return(True);
+NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
+ uint8_t trans_cmd,
+ const char *pipe_name, uint16_t fid, uint16_t function,
+ int flags,
+ uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
+ uint8_t *param, uint32_t num_param, uint32_t max_param,
+ uint8_t *data, uint32_t num_data, uint32_t max_data,
+ uint16_t *recv_flags2,
+ uint16_t **rsetup, uint8_t min_rsetup, uint8_t *num_rsetup,
+ uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
+ uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata)
+{
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct tevent_context *ev;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_NO_MEMORY;
+
+ if (smbXcli_conn_has_async_calls(cli->conn)) {
+ /*
+ * Can't use sync call while an async call is in flight
+ */
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
+ ev = samba_tevent_context_init(frame);
+ if (ev == NULL) {
+ goto fail;
+ }
+ req = cli_trans_send(
+ frame, /* mem_ctx */
+ ev, /* ev */
+ cli, /* cli */
+ 0, /* additional_flags2 */
+ trans_cmd, /* cmd */
+ pipe_name, fid, function, flags,
+ setup, num_setup, max_setup,
+ param, num_param, max_param,
+ data, num_data, max_data);
+ if (req == NULL) {
+ goto fail;
+ }
+ if (!tevent_req_poll_ntstatus(req, ev, &status)) {
+ goto fail;
+ }
+ status = cli_trans_recv(
+ req, mem_ctx, recv_flags2,
+ rsetup, min_rsetup, num_rsetup,
+ rparam, min_rparam, num_rparam,
+ rdata, min_rdata, num_rdata);
+fail:
+ TALLOC_FREE(frame);
+ return status;
}
git.samba.org / samba.git / blobdiff