-/*
+/*
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 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 "libsmb/libsmb.h"
+#include "../lib/util/tevent_ntstatus.h"
+#include "async_smb.h"
+
+struct trans_recvblob {
+ uint8_t *data;
+ uint32_t max, total, received;
+};
+
+struct cli_trans_state {
+ struct cli_state *cli;
+ struct event_context *ev;
+ uint8_t cmd;
+ uint16_t mid;
+ uint32_t seqnum;
+ const char *pipe_name;
+ uint8_t *pipe_name_conv;
+ size_t pipe_name_conv_len;
+ uint16_t fid;
+ uint16_t function;
+ int flags;
+ uint16_t *setup;
+ uint8_t num_setup, max_setup;
+ uint8_t *param;
+ uint32_t num_param, param_sent;
+ uint8_t *data;
+ uint32_t num_data, data_sent;
+
+ uint8_t num_rsetup;
+ uint16_t *rsetup;
+ struct trans_recvblob rparam;
+ struct trans_recvblob rdata;
+ uint16_t recv_flags2;
+
+ TALLOC_CTX *secondary_request_ctx;
+
+ struct iovec iov[4];
+ uint8_t pad[4];
+ uint16_t vwv[32];
+};
+
+static NTSTATUS cli_pull_trans(uint8_t *inbuf,
+ uint8_t wct, uint16_t *vwv,
+ uint16_t num_bytes, uint8_t *bytes,
+ uint8_t smb_cmd, bool expect_first_reply,
+ uint8_t *pnum_setup, uint16_t **psetup,
+ uint32_t *ptotal_param, uint32_t *pnum_param,
+ uint32_t *pparam_disp, uint8_t **pparam,
+ uint32_t *ptotal_data, uint32_t *pnum_data,
+ uint32_t *pdata_disp, uint8_t **pdata)
+{
+ uint32_t param_ofs, data_ofs;
+ if (expect_first_reply) {
+ if ((wct != 0) || (num_bytes != 0)) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ return NT_STATUS_OK;
+ }
-/****************************************************************************
- Send a SMB trans or trans2 request.
-****************************************************************************/
+ switch (smb_cmd) {
+ case SMBtrans:
+ case SMBtrans2:
+ if (wct < 10) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ *ptotal_param = SVAL(vwv + 0, 0);
+ *ptotal_data = SVAL(vwv + 1, 0);
+ *pnum_param = SVAL(vwv + 3, 0);
+ param_ofs = SVAL(vwv + 4, 0);
+ *pparam_disp = SVAL(vwv + 5, 0);
+ *pnum_data = SVAL(vwv + 6, 0);
+ data_ofs = SVAL(vwv + 7, 0);
+ *pdata_disp = SVAL(vwv + 8, 0);
+ *pnum_setup = CVAL(vwv + 9, 0);
+ if (wct < 10 + (*pnum_setup)) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ *psetup = vwv + 10;
-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)
-{
- 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);
+ break;
+ case SMBnttrans:
+ if (wct < 18) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ *ptotal_param = IVAL(vwv, 3);
+ *ptotal_data = IVAL(vwv, 7);
+ *pnum_param = IVAL(vwv, 11);
+ param_ofs = IVAL(vwv, 15);
+ *pparam_disp = IVAL(vwv, 19);
+ *pnum_data = IVAL(vwv, 23);
+ data_ofs = IVAL(vwv, 27);
+ *pdata_disp = IVAL(vwv, 31);
+ *pnum_setup = CVAL(vwv, 35);
+ *psetup = vwv + 18;
+ break;
+
+ default:
+ return NT_STATUS_INTERNAL_ERROR;
+ }
/*
- * Save the mid we're using. We need this for finding
- * signing replies.
+ * Check for buffer overflows. data_ofs needs to be checked against
+ * the incoming buffer length, data_disp against the total
+ * length. Likewise for param_ofs/param_disp.
*/
- 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;
- }
-
- /* Note we're in a trans state. Save the sequence
- * numbers for replies. */
- client_set_trans_sign_state_on(cli, mid);
-
- if (this_ldata < ldata || this_lparam < lparam) {
- /* receive interim response */
- if (!cli_receive_smb(cli) || cli_is_error(cli)) {
- client_set_trans_sign_state_off(cli, mid);
- 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)) {
- client_set_trans_sign_state_off(cli, mid);
- return False;
- }
-
- /* Ensure we use the same mid for the secondaries. */
- cli->mid = mid;
-
- tot_data += this_ldata;
- tot_param += this_lparam;
- }
+ if (trans_oob(smb_len(inbuf), param_ofs, *pnum_param)
+ || trans_oob(*ptotal_param, *pparam_disp, *pnum_param)
+ || trans_oob(smb_len(inbuf), data_ofs, *pnum_data)
+ || trans_oob(*ptotal_data, *pdata_disp, *pnum_data)) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
- return(True);
-}
+ *pparam = (uint8_t *)inbuf + 4 + param_ofs;
+ *pdata = (uint8_t *)inbuf + 4 + data_ofs;
-/****************************************************************************
- Receive a SMB trans or trans2 response allocating the necessary memory.
-****************************************************************************/
+ return NT_STATUS_OK;
+}
-bool cli_receive_trans(struct cli_state *cli,int trans,
- char **param, unsigned int *param_len,
- char **data, unsigned int *data_len)
+static NTSTATUS cli_trans_pull_blob(TALLOC_CTX *mem_ctx,
+ struct trans_recvblob *blob,
+ uint32_t total, uint32_t thistime,
+ uint8_t *buf, uint32_t displacement)
{
- unsigned int total_data=0;
- unsigned int total_param=0;
- unsigned int this_data,this_param;
- NTSTATUS status;
- bool ret = False;
+ if (blob->data == NULL) {
+ if (total > blob->max) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
+ blob->total = total;
+ blob->data = talloc_array(mem_ctx, uint8_t, total);
+ if (blob->data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
- *data_len = *param_len = 0;
+ if (total > blob->total) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
- if (!cli_receive_smb(cli)) {
- return False;
+ if (thistime) {
+ memcpy(blob->data + displacement, buf, thistime);
+ blob->received += thistime;
}
- 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)));
- return False;
+ return NT_STATUS_OK;
+}
+
+static void cli_trans_format(struct cli_trans_state *state, uint8_t *pwct,
+ int *piov_count)
+{
+ uint8_t wct = 0;
+ struct iovec *iov = state->iov;
+ uint8_t *pad = state->pad;
+ uint16_t *vwv = state->vwv;
+ uint16_t param_offset;
+ uint16_t this_param = 0;
+ uint16_t this_data = 0;
+ uint32_t useable_space;
+ uint8_t cmd;
+
+ cmd = state->cmd;
+
+ if ((state->param_sent != 0) || (state->data_sent != 0)) {
+ /* The secondary commands are one after the primary ones */
+ cmd += 1;
}
- /*
- * 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.
- * When setting up an encrypted transport we can also
- * see NT_STATUS_MORE_PROCESSING_REQUIRED here.
- *
- * Vista returns NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT if the folder
- * "<share>/Users/All Users" is enumerated. This is a special pseudo
- * folder, and the response does not have parameters (nor a parameter
- * length).
- */
- status = cli_nt_error(cli);
-
- if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- if (NT_STATUS_IS_ERR(status) ||
- NT_STATUS_EQUAL(status,STATUS_NO_MORE_FILES) ||
- NT_STATUS_EQUAL(status,NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
- goto out;
- }
+ param_offset = smb_size - 4;
+
+ switch (cmd) {
+ case SMBtrans:
+ pad[0] = 0;
+ iov[0].iov_base = (void *)pad;
+ iov[0].iov_len = 1;
+ iov[1].iov_base = (void *)state->pipe_name_conv;
+ iov[1].iov_len = state->pipe_name_conv_len;
+ wct = 14 + state->num_setup;
+ param_offset += iov[0].iov_len + iov[1].iov_len;
+ iov += 2;
+ break;
+ case SMBtrans2:
+ pad[0] = 0;
+ pad[1] = 'D'; /* Copy this from "old" 3.0 behaviour */
+ pad[2] = ' ';
+ iov[0].iov_base = (void *)pad;
+ iov[0].iov_len = 3;
+ wct = 14 + state->num_setup;
+ param_offset += 3;
+ iov += 1;
+ break;
+ case SMBtranss:
+ wct = 8;
+ break;
+ case SMBtranss2:
+ wct = 9;
+ break;
+ case SMBnttrans:
+ wct = 19 + state->num_setup;
+ break;
+ case SMBnttranss:
+ wct = 18;
+ break;
}
- /* parse out the lengths */
- total_data = SVAL(cli->inbuf,smb_tdrcnt);
- total_param = SVAL(cli->inbuf,smb_tprcnt);
+ useable_space = state->cli->max_xmit - smb_size - sizeof(uint16_t)*wct;
- /* allocate it */
- if (total_data!=0) {
- *data = (char *)SMB_REALLOC(*data,total_data);
- if (!(*data)) {
- DEBUG(0,("cli_receive_trans: failed to enlarge data buffer\n"));
- goto out;
- }
+ if (state->param_sent < state->num_param) {
+ this_param = MIN(state->num_param - state->param_sent,
+ useable_space);
+ iov[0].iov_base = (void *)(state->param + state->param_sent);
+ iov[0].iov_len = this_param;
+ iov += 1;
+ }
+
+ if (state->data_sent < state->num_data) {
+ this_data = MIN(state->num_data - state->data_sent,
+ useable_space - this_param);
+ iov[0].iov_base = (void *)(state->data + state->data_sent);
+ iov[0].iov_len = this_data;
+ iov += 1;
}
- if (total_param!=0) {
- *param = (char *)SMB_REALLOC(*param,total_param);
- if (!(*param)) {
- DEBUG(0,("cli_receive_trans: failed to enlarge param buffer\n"));
- goto out;
+ param_offset += wct * sizeof(uint16_t);
+
+ DEBUG(10, ("num_setup=%u, max_setup=%u, "
+ "param_total=%u, this_param=%u, max_param=%u, "
+ "data_total=%u, this_data=%u, max_data=%u, "
+ "param_offset=%u, param_disp=%u, data_disp=%u\n",
+ (unsigned)state->num_setup, (unsigned)state->max_setup,
+ (unsigned)state->num_param, (unsigned)this_param,
+ (unsigned)state->rparam.max,
+ (unsigned)state->num_data, (unsigned)this_data,
+ (unsigned)state->rdata.max,
+ (unsigned)param_offset,
+ (unsigned)state->param_sent, (unsigned)state->data_sent));
+
+ switch (cmd) {
+ case SMBtrans:
+ case SMBtrans2:
+ SSVAL(vwv + 0, 0, state->num_param);
+ SSVAL(vwv + 1, 0, state->num_data);
+ SSVAL(vwv + 2, 0, state->rparam.max);
+ SSVAL(vwv + 3, 0, state->rdata.max);
+ SCVAL(vwv + 4, 0, state->max_setup);
+ SCVAL(vwv + 4, 1, 0); /* reserved */
+ SSVAL(vwv + 5, 0, state->flags);
+ SIVAL(vwv + 6, 0, 0); /* timeout */
+ SSVAL(vwv + 8, 0, 0); /* reserved */
+ SSVAL(vwv + 9, 0, this_param);
+ SSVAL(vwv +10, 0, param_offset);
+ SSVAL(vwv +11, 0, this_data);
+ SSVAL(vwv +12, 0, param_offset + this_param);
+ SCVAL(vwv +13, 0, state->num_setup);
+ SCVAL(vwv +13, 1, 0); /* reserved */
+ memcpy(vwv + 14, state->setup,
+ sizeof(uint16_t) * state->num_setup);
+ break;
+ case SMBtranss:
+ case SMBtranss2:
+ SSVAL(vwv + 0, 0, state->num_param);
+ SSVAL(vwv + 1, 0, state->num_data);
+ SSVAL(vwv + 2, 0, this_param);
+ SSVAL(vwv + 3, 0, param_offset);
+ SSVAL(vwv + 4, 0, state->param_sent);
+ SSVAL(vwv + 5, 0, this_data);
+ SSVAL(vwv + 6, 0, param_offset + this_param);
+ SSVAL(vwv + 7, 0, state->data_sent);
+ if (cmd == SMBtranss2) {
+ SSVAL(vwv + 8, 0, state->fid);
}
+ break;
+ case SMBnttrans:
+ SCVAL(vwv, 0, state->max_setup);
+ SSVAL(vwv, 1, 0); /* reserved */
+ SIVAL(vwv, 3, state->num_param);
+ SIVAL(vwv, 7, state->num_data);
+ SIVAL(vwv, 11, state->rparam.max);
+ SIVAL(vwv, 15, state->rdata.max);
+ SIVAL(vwv, 19, this_param);
+ SIVAL(vwv, 23, param_offset);
+ SIVAL(vwv, 27, this_data);
+ SIVAL(vwv, 31, param_offset + this_param);
+ SCVAL(vwv, 35, state->num_setup);
+ SSVAL(vwv, 36, state->function);
+ memcpy(vwv + 19, state->setup,
+ sizeof(uint16_t) * state->num_setup);
+ break;
+ case SMBnttranss:
+ SSVAL(vwv, 0, 0); /* reserved */
+ SCVAL(vwv, 2, 0); /* reserved */
+ SIVAL(vwv, 3, state->num_param);
+ SIVAL(vwv, 7, state->num_data);
+ SIVAL(vwv, 11, this_param);
+ SIVAL(vwv, 15, param_offset);
+ SIVAL(vwv, 19, state->param_sent);
+ SIVAL(vwv, 23, this_data);
+ SIVAL(vwv, 27, param_offset + this_param);
+ SIVAL(vwv, 31, state->data_sent);
+ SCVAL(vwv, 35, 0); /* reserved */
+ break;
}
- for (;;) {
- this_data = SVAL(cli->inbuf,smb_drcnt);
- this_param = SVAL(cli->inbuf,smb_prcnt);
+ state->param_sent += this_param;
+ state->data_sent += this_data;
- if (this_data + *data_len > total_data ||
- this_param + *param_len > total_param) {
- DEBUG(1,("Data overflow in cli_receive_trans\n"));
- goto out;
- }
+ *pwct = wct;
+ *piov_count = iov - state->iov;
+}
- 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"));
- goto out;
- }
+static void cli_trans_done(struct tevent_req *subreq);
- 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"));
- goto out;
- }
- 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"));
- goto out;
- }
-
- 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"));
- goto out;
- }
- 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"));
- goto out;
- }
-
- memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
- }
- *data_len += this_data;
- *param_len += this_param;
+struct tevent_req *cli_trans_send(
+ TALLOC_CTX *mem_ctx, struct event_context *ev,
+ struct cli_state *cli, 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)
+{
+ struct tevent_req *req, *subreq;
+ struct cli_trans_state *state;
+ int iov_count;
+ uint8_t wct;
+ NTSTATUS status;
- if (total_data <= *data_len && total_param <= *param_len) {
- ret = True;
- break;
- }
-
- if (!cli_receive_smb(cli)) {
- goto out;
- }
+ req = tevent_req_create(mem_ctx, &state, struct cli_trans_state);
+ if (req == NULL) {
+ return NULL;
+ }
- 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)));
- goto out;
- }
- if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- if (NT_STATUS_IS_ERR(cli_nt_error(cli))) {
- goto out;
- }
+ if ((cmd == SMBtrans) || (cmd == SMBtrans2)) {
+ if ((num_param > 0xffff) || (max_param > 0xffff)
+ || (num_data > 0xffff) || (max_data > 0xffff)) {
+ DEBUG(3, ("Attempt to send invalid trans2 request "
+ "(setup %u, params %u/%u, data %u/%u)\n",
+ (unsigned)num_setup,
+ (unsigned)num_param, (unsigned)max_param,
+ (unsigned)num_data, (unsigned)max_data));
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
}
+ }
- /* 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) {
- ret = True;
- break;
- }
+ /*
+ * The largest wct will be for nttrans (19+num_setup). Make sure we
+ * don't overflow state->vwv in cli_trans_format.
+ */
+
+ if ((num_setup + 19) > ARRAY_SIZE(state->vwv)) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
}
- out:
+ state->cli = cli;
+ state->ev = ev;
+ state->cmd = cmd;
+ state->flags = flags;
+ state->num_rsetup = 0;
+ state->rsetup = NULL;
+ ZERO_STRUCT(state->rparam);
+ ZERO_STRUCT(state->rdata);
+
+ if ((pipe_name != NULL)
+ && (!convert_string_talloc(state, CH_UNIX,
+ cli_ucs2(cli) ? CH_UTF16LE : CH_DOS,
+ pipe_name, strlen(pipe_name) + 1,
+ &state->pipe_name_conv,
+ &state->pipe_name_conv_len))) {
+ tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+ return tevent_req_post(req, ev);
+ }
+ state->fid = fid; /* trans2 */
+ state->function = function; /* nttrans */
- client_set_trans_sign_state_off(cli, SVAL(cli->inbuf,smb_mid));
- return ret;
-}
+ state->setup = setup;
+ state->num_setup = num_setup;
+ state->max_setup = max_setup;
-/****************************************************************************
- Send a SMB nttrans request.
-****************************************************************************/
+ state->param = param;
+ state->num_param = num_param;
+ state->param_sent = 0;
+ state->rparam.max = max_param;
-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)
-{
- unsigned int i;
- unsigned int this_ldata,this_lparam;
- unsigned int tot_data=0,tot_param=0;
- uint16 mid;
- char *outdata,*outparam;
+ state->data = data;
+ state->num_data = num_data;
+ state->data_sent = 0;
+ state->rdata.max = max_data;
- this_lparam = MIN(lparam,cli->max_xmit - (500+lsetup*2)); /* hack */
- this_ldata = MIN(ldata,cli->max_xmit - (500+lsetup*2+this_lparam));
+ cli_trans_format(state, &wct, &iov_count);
- 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);
+ subreq = cli_smb_req_create(state, ev, cli, cmd, 0, wct, state->vwv,
+ iov_count, state->iov);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ state->mid = cli_smb_req_mid(subreq);
+ status = cli_smb_req_send(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, state->ev);
+ }
+ cli_state_seqnum_persistent(cli, state->mid);
+ tevent_req_set_callback(subreq, cli_trans_done, req);
+ return req;
+}
+static void cli_trans_done(struct tevent_req *subreq)
+{
+ 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;
+ bool sent_all;
+ uint8_t wct;
+ uint16_t *vwv;
+ uint32_t num_bytes;
+ uint8_t *bytes;
+ uint8_t *inbuf;
+ uint8_t num_setup = 0;
+ uint16_t *setup = NULL;
+ uint32_t total_param = 0;
+ uint32_t num_param = 0;
+ uint32_t param_disp = 0;
+ uint32_t total_data = 0;
+ uint32_t num_data = 0;
+ uint32_t data_disp = 0;
+ uint8_t *param = NULL;
+ uint8_t *data = NULL;
+
+ status = cli_smb_recv(subreq, state, &inbuf, 0, &wct, &vwv,
+ &num_bytes, &bytes);
/*
- * Save the mid we're using. We need this for finding
- * signing replies.
+ * Do not TALLOC_FREE(subreq) here, we might receive more than
+ * one response for the same mid.
*/
- 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;
- }
-
- /* Note we're in a trans state. Save the sequence
- * numbers for replies. */
- client_set_trans_sign_state_on(cli, mid);
-
- if (this_ldata < ldata || this_lparam < lparam) {
- /* receive interim response */
- if (!cli_receive_smb(cli) || cli_is_error(cli)) {
- client_set_trans_sign_state_off(cli, mid);
- return(False);
- }
+ /*
+ * We can receive something like STATUS_MORE_ENTRIES, so don't use
+ * !NT_STATUS_IS_OK(status) here.
+ */
- 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)) {
- client_set_trans_sign_state_off(cli, mid);
- return False;
- }
-
- /* Ensure we use the same mid for the secondaries. */
- cli->mid = mid;
-
- tot_data += this_ldata;
- tot_param += this_lparam;
- }
+ if (NT_STATUS_IS_ERR(status)) {
+ goto fail;
}
- return(True);
-}
+ sent_all = ((state->param_sent == state->num_param)
+ && (state->data_sent == state->num_data));
-/****************************************************************************
- Receive a SMB nttrans response allocating the necessary memory.
-****************************************************************************/
+ status = cli_pull_trans(
+ inbuf, wct, vwv, num_bytes, bytes,
+ state->cmd, !sent_all, &num_setup, &setup,
+ &total_param, &num_param, ¶m_disp, ¶m,
+ &total_data, &num_data, &data_disp, &data);
-bool cli_receive_nt_trans(struct cli_state *cli,
- char **param, unsigned int *param_len,
- char **data, unsigned int *data_len)
-{
- unsigned int total_data=0;
- unsigned int total_param=0;
- unsigned int this_data,this_param;
- uint8 eclass;
- uint32 ecode;
- bool ret = False;
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+
+ if (!sent_all) {
+ int iov_count;
+
+ TALLOC_FREE(subreq);
+
+ cli_trans_format(state, &wct, &iov_count);
+
+ subreq = cli_smb_req_create(state, state->ev, state->cli,
+ state->cmd + 1, 0, wct, state->vwv,
+ iov_count, state->iov);
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ cli_smb_req_set_mid(subreq, state->mid);
- *data_len = *param_len = 0;
+ status = cli_smb_req_send(subreq);
- if (!cli_receive_smb(cli)) {
- return False;
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
+ tevent_req_set_callback(subreq, cli_trans_done, req);
+ return;
}
- 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)));
- return(False);
+ status = cli_trans_pull_blob(
+ state, &state->rparam, total_param, num_param, param,
+ param_disp);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("Pulling params failed: %s\n", nt_errstr(status)));
+ goto fail;
}
- /*
- * 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 (!(eclass == ERRDOS && ecode == ERRmoredata)) {
- goto out;
- }
+ status = cli_trans_pull_blob(
+ state, &state->rdata, total_data, num_data, data,
+ data_disp);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("Pulling data failed: %s\n", nt_errstr(status)));
+ goto fail;
}
- /*
- * 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)) {
- goto out;
- }
+ if ((state->rparam.total == state->rparam.received)
+ && (state->rdata.total == state->rdata.received)) {
+ state->recv_flags2 = SVAL(inbuf, smb_flg2);
+ TALLOC_FREE(subreq);
+ cli_state_seqnum_remove(state->cli, state->mid);
+ tevent_req_done(req);
+ return;
}
- /* parse out the lengths */
- total_data = SVAL(cli->inbuf,smb_ntr_TotalDataCount);
- total_param = SVAL(cli->inbuf,smb_ntr_TotalParameterCount);
+ TALLOC_FREE(inbuf);
- /* allocate it */
- if (total_data) {
- *data = (char *)SMB_REALLOC(*data,total_data);
- if (!(*data)) {
- DEBUG(0,("cli_receive_nt_trans: failed to enlarge data buffer to %d\n",total_data));
- goto out;
- }
+ if (!cli_smb_req_set_pending(subreq)) {
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
}
+ return;
- if (total_param) {
- *param = (char *)SMB_REALLOC(*param,total_param);
- if (!(*param)) {
- DEBUG(0,("cli_receive_nt_trans: failed to enlarge param buffer to %d\n", total_param));
- goto out;
- }
+ fail:
+ cli_state_seqnum_remove(state->cli, state->mid);
+ TALLOC_FREE(subreq);
+ tevent_req_nterror(req, status);
+}
+
+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)
+{
+ struct cli_trans_state *state = tevent_req_data(
+ req, struct cli_trans_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ return status;
}
- while (1) {
- this_data = SVAL(cli->inbuf,smb_ntr_DataCount);
- this_param = SVAL(cli->inbuf,smb_ntr_ParameterCount);
+ if ((state->num_rsetup < min_setup)
+ || (state->rparam.total < min_param)
+ || (state->rdata.total < min_data)) {
+ return NT_STATUS_INVALID_NETWORK_RESPONSE;
+ }
- if (this_data + *data_len > total_data ||
- this_param + *param_len > total_param) {
- DEBUG(1,("Data overflow in cli_receive_nt_trans\n"));
- goto out;
- }
+ if (recv_flags2 != NULL) {
+ *recv_flags2 = state->recv_flags2;
+ }
- 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"));
- goto out;
- }
+ if (setup != NULL) {
+ *setup = talloc_move(mem_ctx, &state->rsetup);
+ *num_setup = state->num_rsetup;
+ } else {
+ TALLOC_FREE(state->rsetup);
+ }
- 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"));
- goto out;
- }
- 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"));
- goto out;
- }
-
- memcpy(*data + data_offset_out, smb_base(cli->inbuf) + data_offset_in, this_data);
- }
+ if (param != NULL) {
+ *param = talloc_move(mem_ctx, &state->rparam.data);
+ *num_param = state->rparam.total;
+ } else {
+ TALLOC_FREE(state->rparam.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"));
- goto out;
- }
- 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"));
- goto out;
- }
-
- memcpy(*param + param_offset_out, smb_base(cli->inbuf) + param_offset_in, this_param);
- }
+ if (data != NULL) {
+ *data = talloc_move(mem_ctx, &state->rdata.data);
+ *num_data = state->rdata.total;
+ } else {
+ TALLOC_FREE(state->rdata.data);
+ }
- *data_len += this_data;
- *param_len += this_param;
+ return NT_STATUS_OK;
+}
- if (total_data <= *data_len && total_param <= *param_len) {
- ret = True;
- break;
- }
-
- if (!cli_receive_smb(cli)) {
- goto out;
- }
+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 event_context *ev;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_OK;
- 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)));
- goto out;
- }
- if (cli_is_dos_error(cli)) {
- cli_dos_error(cli, &eclass, &ecode);
- if(!(eclass == ERRDOS && ecode == ERRmoredata)) {
- goto out;
- }
- }
+ if (cli_has_async_calls(cli)) {
/*
- * Likewise for NT_STATUS_BUFFER_TOO_SMALL
+ * Can't use sync call while an async call is in flight
*/
- if (cli_is_nt_error(cli)) {
- if (!NT_STATUS_EQUAL(cli_nt_error(cli),
- NT_STATUS_BUFFER_TOO_SMALL)) {
- goto out;
- }
- }
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
- /* 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) {
- ret = True;
- break;
- }
+ ev = event_context_init(frame);
+ if (ev == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
}
- out:
+ req = cli_trans_send(frame, ev, cli, trans_cmd,
+ pipe_name, fid, function, flags,
+ setup, num_setup, max_setup,
+ param, num_param, max_param,
+ data, num_data, max_data);
+ if (req == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
+ }
+
+ if (!tevent_req_poll(req, ev)) {
+ status = map_nt_error_from_unix(errno);
+ goto fail;
+ }
- client_set_trans_sign_state_off(cli, SVAL(cli->inbuf,smb_mid));
- return ret;
+ 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