SMB Version handling
Copyright (C) John H Terpstra 1995-1998
-
+
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/>.
*/
/*
This file handles the named pipe and mailslot calls
*/
#include "includes.h"
-
-extern int max_send;
-
-extern fstring local_machine;
+#include "smbd/globals.h"
#define NERR_notsupported 50
-extern int smb_read_error;
+static void api_no_reply(connection_struct *conn, struct smb_request *req);
/*******************************************************************
copies parameters and data, as needed, into the smb buffer
char *rparam, int param_offset, int param_len,
char *rdata, int data_offset, int data_len)
{
- char *copy_into = smb_buf(outbuf)+1;
+ char *copy_into = smb_buf(outbuf);
if(param_len < 0)
param_len = 0;
if(data_len < 0)
data_len = 0;
- DEBUG(5,("copy_trans_params_and_data: params[%d..%d] data[%d..%d]\n",
+ DEBUG(5,("copy_trans_params_and_data: params[%d..%d] data[%d..%d] (align %d)\n",
param_offset, param_offset + param_len,
- data_offset , data_offset + data_len));
+ data_offset , data_offset + data_len,
+ align));
+
+ *copy_into = '\0';
+
+ copy_into += 1;
if (param_len)
memcpy(copy_into, &rparam[param_offset], param_len);
- copy_into += param_len + align;
+ copy_into += param_len;
+ if (align) {
+ memset(copy_into, '\0', align);
+ }
+
+ copy_into += align;
if (data_len )
memcpy(copy_into, &rdata[data_offset], data_len);
Send a trans reply.
****************************************************************************/
-void send_trans_reply(char *outbuf,
- char *rparam, int rparam_len,
- char *rdata, int rdata_len,
- BOOL buffer_too_large)
+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 this_ldata,this_lparam;
int tot_data_sent = 0;
align = ((this_lparam)%4);
- if (buffer_too_large) {
- ERROR_NT(STATUS_BUFFER_OVERFLOW);
- }
+ reply_outbuf(req, 10, 1+align+this_ldata+this_lparam);
- set_message(outbuf,10,1+align+this_ldata+this_lparam,True);
+ /*
+ * 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(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);
- copy_trans_params_and_data(outbuf, align,
- rparam, tot_param_sent, this_lparam,
- rdata, tot_data_sent, this_ldata);
+ if (buffer_too_large) {
+ error_packet_set((char *)req->outbuf, ERRDOS, ERRmoredata,
+ STATUS_BUFFER_OVERFLOW, __LINE__, __FILE__);
+ }
- 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);
+ show_msg((char *)req->outbuf);
+ if (!srv_send_smb(smbd_server_fd(), (char *)req->outbuf,
+ IS_CONN_ENCRYPTED(conn), &req->pcd)) {
+ exit_server_cleanly("send_trans_reply: srv_send_smb failed.");
+ }
- show_msg(outbuf);
- if (!send_smb(smbd_server_fd(),outbuf))
- exit_server("send_trans_reply: send_smb failed.");
+ TALLOC_FREE(req->outbuf);
tot_data_sent = this_ldata;
tot_param_sent = this_lparam;
while (tot_data_sent < ldata || tot_param_sent < lparam)
{
- this_lparam = MIN(lparam-tot_param_sent, max_send - 500); /* hack */
- this_ldata = MIN(ldata -tot_data_sent, max_send - (500+this_lparam));
+ this_lparam = MIN(lparam-tot_param_sent,
+ max_send - 500); /* hack */
+ this_ldata = MIN(ldata -tot_data_sent,
+ max_send - (500+this_lparam));
if(this_lparam < 0)
this_lparam = 0;
align = (this_lparam%4);
- set_message(outbuf,10,1+this_ldata+this_lparam+align,False);
-
- copy_trans_params_and_data(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);
+ 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((char *)req->outbuf, align,
+ rparam, tot_param_sent, this_lparam,
+ rdata, tot_data_sent, this_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((char *)req->outbuf,
+ ERRDOS, ERRmoredata,
+ STATUS_BUFFER_OVERFLOW,
+ __LINE__, __FILE__);
+ }
- show_msg(outbuf);
- if (!send_smb(smbd_server_fd(),outbuf))
- exit_server("send_trans_reply: send_smb failed.");
+ show_msg((char *)req->outbuf);
+ if (!srv_send_smb(smbd_server_fd(), (char *)req->outbuf,
+ 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(req->outbuf);
}
}
Start the first part of an RPC reply which began with an SMBtrans request.
****************************************************************************/
-static BOOL api_rpc_trans_reply(char *outbuf, smb_np_struct *p)
+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;
- char *rdata = malloc(p->max_trans_reply);
- int data_len;
+ struct tevent_req *subreq;
+ struct dcerpc_cmd_state *state;
- if(rdata == NULL) {
- DEBUG(0,("api_rpc_trans_reply: malloc fail.\n"));
- return False;
+ if (!fsp_is_np(fsp)) {
+ api_no_reply(conn, req);
+ return;
}
- if((data_len = read_from_pipe( p, rdata, p->max_trans_reply,
- &is_data_outstanding)) < 0) {
- SAFE_FREE(rdata);
- return False;
+ state = talloc(req, struct dcerpc_cmd_state);
+ if (state == NULL) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ return;
}
+ req->async_priv = state;
- send_trans_reply(outbuf, NULL, 0, rdata, data_len, is_data_outstanding);
+ state->handle = fsp->fake_file_handle;
- SAFE_FREE(rdata);
- return True;
+ /*
+ * 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;
+
+ subreq = np_write_send(state, smbd_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_ARRAY(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, smbd_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(
+ smbd_server_fd(), (char *)req->outbuf,
+ IS_CONN_ENCRYPTED(req->conn) || req->encrypted,
+ &req->pcd)) {
+ exit_server_cleanly("construct_reply: 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);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("Could not read from to pipe: %s\n",
+ nt_errstr(status)));
+ reply_nterror(req, status);
+
+ if (!srv_send_smb(smbd_server_fd(), (char *)req->outbuf,
+ IS_CONN_ENCRYPTED(req->conn)
+ ||req->encrypted, &req->pcd)) {
+ exit_server_cleanly("construct_reply: srv_send_smb "
+ "failed.");
+ }
+ TALLOC_FREE(req);
+ return;
+ }
+
+ send_trans_reply(req->conn, req, NULL, 0, (char *)state->data, nread,
+ is_data_outstanding);
+ TALLOC_FREE(req);
}
/****************************************************************************
WaitNamedPipeHandleState
****************************************************************************/
-static BOOL api_WNPHS(char *outbuf, smb_np_struct *p, char *param, int param_len)
+static void api_WNPHS(connection_struct *conn, struct smb_request *req,
+ struct files_struct *fsp, char *param, int param_len)
{
- uint16 priority;
-
- if (!param || param_len < 2)
- return False;
+ if (!param || param_len < 2) {
+ reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return;
+ }
- priority = SVAL(param,0);
- DEBUG(4,("WaitNamedPipeHandleState priority %x\n", priority));
+ DEBUG(4,("WaitNamedPipeHandleState priority %x\n",
+ (int)SVAL(param,0)));
- if (wait_rpc_pipe_hnd_state(p, priority)) {
- /* now send the reply */
- send_trans_reply(outbuf, NULL, 0, NULL, 0, False);
- return True;
- }
- return False;
+ send_trans_reply(conn, req, NULL, 0, NULL, 0, False);
}
SetNamedPipeHandleState
****************************************************************************/
-static BOOL api_SNPHS(char *outbuf, smb_np_struct *p, char *param, int param_len)
+static void api_SNPHS(connection_struct *conn, struct smb_request *req,
+ struct files_struct *fsp, char *param, int param_len)
{
- uint16 id;
-
- if (!param || param_len < 2)
- return False;
+ if (!param || param_len < 2) {
+ reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return;
+ }
- id = SVAL(param,0);
- DEBUG(4,("SetNamedPipeHandleState to code %x\n", id));
+ DEBUG(4,("SetNamedPipeHandleState to code %x\n", (int)SVAL(param,0)));
- if (set_rpc_pipe_hnd_state(p, id)) {
- /* now send the reply */
- send_trans_reply(outbuf, NULL, 0, NULL, 0, False);
- return True;
- }
- return False;
+ send_trans_reply(conn, req, NULL, 0, NULL, 0, False);
}
When no reply is generated, indicate unsupported.
****************************************************************************/
-static BOOL api_no_reply(char *outbuf, int max_rdata_len)
+static void api_no_reply(connection_struct *conn, struct smb_request *req)
{
char rparam[4];
DEBUG(3,("Unsupported API fd command\n"));
/* now send the reply */
- send_trans_reply(outbuf, rparam, 4, NULL, 0, False);
+ send_trans_reply(conn, req, rparam, 4, NULL, 0, False);
- return -1;
+ return;
}
/****************************************************************************
Handle remote api calls delivered to a named pipe already opened.
****************************************************************************/
-static int api_fd_reply(connection_struct *conn,uint16 vuid,char *outbuf,
- uint16 *setup,char *data,char *params,
- int suwcnt,int tdscnt,int tpscnt,int mdrcnt,int mprcnt)
+static void api_fd_reply(connection_struct *conn, uint16 vuid,
+ struct smb_request *req,
+ uint16 *setup, uint8_t *data, char *params,
+ int suwcnt, int tdscnt, int tpscnt,
+ int mdrcnt, int mprcnt)
{
- BOOL reply = False;
- smb_np_struct *p = NULL;
+ struct files_struct *fsp;
int pnum;
int subcommand;
/* First find out the name of this file. */
if (suwcnt != 2) {
DEBUG(0,("Unexpected named pipe transaction.\n"));
- return(-1);
+ reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return;
}
/* Get the file handle and hence the file name. */
/*
* NB. The setup array has already been transformed
- * via SVAL and so is in gost byte order.
+ * via SVAL and so is in host byte order.
*/
pnum = ((int)setup[1]) & 0xFFFF;
subcommand = ((int)setup[0]) & 0xFFFF;
- if(!(p = get_rpc_pipe(pnum))) {
+ fsp = file_fsp(req, pnum);
+
+ if (!fsp_is_np(fsp)) {
+ if (subcommand == TRANSACT_WAITNAMEDPIPEHANDLESTATE) {
+ /* 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, NULL, 0, NULL, 0, False);
+ return;
+ }
+
DEBUG(1,("api_fd_reply: INVALID PIPE HANDLE: %x\n", pnum));
- return api_no_reply(outbuf, mdrcnt);
+ reply_nterror(req, NT_STATUS_INVALID_HANDLE);
+ return;
}
- DEBUG(3,("Got API command 0x%x on pipe \"%s\" (pnum %x)", subcommand, p->name, pnum));
+ if (vuid != fsp->vuid) {
+ DEBUG(1, ("Got pipe request (pnum %x) using invalid VUID %d, "
+ "expected %d\n", pnum, vuid, fsp->vuid));
+ reply_nterror(req, NT_STATUS_INVALID_HANDLE);
+ return;
+ }
- /* record maximum data length that can be transmitted in an SMBtrans */
- p->max_trans_reply = mdrcnt;
+ DEBUG(3,("Got API command 0x%x on pipe \"%s\" (pnum %x)\n",
+ subcommand, fsp->fsp_name, pnum));
- DEBUG(10,("api_fd_reply: p:%p max_trans_reply: %d\n", p, p->max_trans_reply));
+ DEBUG(10, ("api_fd_reply: p:%p max_trans_reply: %d\n", fsp, mdrcnt));
switch (subcommand) {
- case TRANSACT_DCERPCCMD:
+ case TRANSACT_DCERPCCMD: {
/* dce/rpc command */
- reply = write_to_pipe(p, data, tdscnt);
- if (reply)
- reply = api_rpc_trans_reply(outbuf, p);
+ api_dcerpc_cmd(conn, req, fsp, (uint8_t *)data, tdscnt,
+ mdrcnt);
break;
+ }
case TRANSACT_WAITNAMEDPIPEHANDLESTATE:
/* Wait Named Pipe Handle state */
- reply = api_WNPHS(outbuf, p, params, tpscnt);
+ api_WNPHS(conn, req, fsp, params, tpscnt);
break;
case TRANSACT_SETNAMEDPIPEHANDLESTATE:
/* Set Named Pipe Handle state */
- reply = api_SNPHS(outbuf, p, params, tpscnt);
+ api_SNPHS(conn, req, fsp, params, tpscnt);
break;
+ default:
+ reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return;
}
-
- if (!reply)
- return api_no_reply(outbuf, mdrcnt);
-
- return -1;
}
/****************************************************************************
- handle named pipe commands
- ****************************************************************************/
-static int named_pipe(connection_struct *conn,uint16 vuid, char *outbuf,char *name,
- uint16 *setup,char *data,char *params,
- int suwcnt,int tdscnt,int tpscnt,
- int msrcnt,int mdrcnt,int mprcnt)
+ Handle named pipe commands.
+****************************************************************************/
+
+static void named_pipe(connection_struct *conn, uint16 vuid,
+ struct smb_request *req,
+ const char *name, uint16 *setup,
+ char *data, char *params,
+ int suwcnt, int tdscnt,int tpscnt,
+ int msrcnt, int mdrcnt, int mprcnt)
{
DEBUG(3,("named pipe command on <%s> name\n", name));
- if (strequal(name,"LANMAN"))
- return api_reply(conn,vuid,outbuf,data,params,tdscnt,tpscnt,mdrcnt,mprcnt);
+ if (strequal(name,"LANMAN")) {
+ api_reply(conn, vuid, req,
+ data, params,
+ tdscnt, tpscnt,
+ mdrcnt, mprcnt);
+ return;
+ }
if (strequal(name,"WKSSVC") ||
strequal(name,"SRVSVC") ||
strequal(name,"WINREG") ||
strequal(name,"SAMR") ||
- strequal(name,"LSARPC"))
- {
+ strequal(name,"LSARPC")) {
+
DEBUG(4,("named pipe command from Win95 (wow!)\n"));
- return api_fd_reply(conn,vuid,outbuf,setup,data,params,suwcnt,tdscnt,tpscnt,mdrcnt,mprcnt);
+
+ api_fd_reply(conn, vuid, req,
+ setup, (uint8_t *)data, params,
+ suwcnt, tdscnt, tpscnt,
+ mdrcnt, mprcnt);
+ return;
}
- if (strlen(name) < 1)
- return api_fd_reply(conn,vuid,outbuf,setup,data,params,suwcnt,tdscnt,tpscnt,mdrcnt,mprcnt);
+ if (strlen(name) < 1) {
+ api_fd_reply(conn, vuid, req,
+ setup, (uint8_t *)data,
+ params, suwcnt, tdscnt,
+ tpscnt, mdrcnt, mprcnt);
+ return;
+ }
if (setup)
- DEBUG(3,("unknown named pipe: setup 0x%X setup1=%d\n", (int)setup[0],(int)setup[1]));
+ DEBUG(3,("unknown named pipe: setup 0x%X setup1=%d\n",
+ (int)setup[0],(int)setup[1]));
- return 0;
+ reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
+ return;
}
+static void handle_trans(connection_struct *conn, struct smb_request *req,
+ struct trans_state *state)
+{
+ char *local_machine_name;
+ int name_offset = 0;
+
+ DEBUG(3,("trans <%s> data=%u params=%u setup=%u\n",
+ state->name,(unsigned int)state->total_data,(unsigned int)state->total_param,
+ (unsigned int)state->setup_count));
+
+ /*
+ * WinCE wierdness....
+ */
+
+ local_machine_name = talloc_asprintf(state, "\\%s\\",
+ get_local_machine_name());
+
+ if (local_machine_name == NULL) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ return;
+ }
+
+ if (strnequal(state->name, local_machine_name,
+ strlen(local_machine_name))) {
+ name_offset = strlen(local_machine_name)-1;
+ }
+
+ if (!strnequal(&state->name[name_offset], "\\PIPE",
+ strlen("\\PIPE"))) {
+ reply_nterror(req, NT_STATUS_NOT_SUPPORTED);
+ return;
+ }
+
+ name_offset += strlen("\\PIPE");
+
+ /* Win9x weirdness. When talking to a unicode server Win9x
+ only sends \PIPE instead of \PIPE\ */
+
+ if (state->name[name_offset] == '\\')
+ name_offset++;
+
+ DEBUG(5,("calling named_pipe\n"));
+ named_pipe(conn, state->vuid, req,
+ state->name+name_offset,
+ state->setup,state->data,
+ state->param,
+ state->setup_count,state->total_data,
+ state->total_param,
+ state->max_setup_return,
+ state->max_data_return,
+ state->max_param_return);
+
+ if (state->close_on_completion) {
+ close_cnum(conn,state->vuid);
+ req->conn = NULL;
+ }
+
+ return;
+}
/****************************************************************************
Reply to a SMBtrans.
****************************************************************************/
-int reply_trans(connection_struct *conn, char *inbuf,char *outbuf, int size, int bufsize)
+void reply_trans(struct smb_request *req)
{
- fstring name;
- int name_offset = 0;
- char *data=NULL,*params=NULL;
- uint16 *setup=NULL;
- int outsize = 0;
- uint16 vuid = SVAL(inbuf,smb_uid);
- unsigned int tpscnt = SVAL(inbuf,smb_vwv0);
- unsigned int tdscnt = SVAL(inbuf,smb_vwv1);
- unsigned int mprcnt = SVAL(inbuf,smb_vwv2);
- unsigned int mdrcnt = SVAL(inbuf,smb_vwv3);
- unsigned int msrcnt = CVAL(inbuf,smb_vwv4);
- BOOL close_on_completion = BITSETW(inbuf+smb_vwv5,0);
- BOOL one_way = BITSETW(inbuf+smb_vwv5,1);
- unsigned int pscnt = SVAL(inbuf,smb_vwv9);
- unsigned int psoff = SVAL(inbuf,smb_vwv10);
- unsigned int dscnt = SVAL(inbuf,smb_vwv11);
- unsigned int dsoff = SVAL(inbuf,smb_vwv12);
- unsigned int suwcnt = CVAL(inbuf,smb_vwv13);
+ connection_struct *conn = req->conn;
+ unsigned int dsoff;
+ unsigned int dscnt;
+ unsigned int psoff;
+ unsigned int pscnt;
+ struct trans_state *state;
+ NTSTATUS result;
+
START_PROFILE(SMBtrans);
- memset(name, '\0',sizeof(name));
- srvstr_pull_buf(inbuf, name, smb_buf(inbuf), sizeof(name), STR_TERMINATE);
+ if (req->wct < 14) {
+ reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ END_PROFILE(SMBtrans);
+ return;
+ }
+
+ dsoff = SVAL(req->vwv+12, 0);
+ dscnt = SVAL(req->vwv+11, 0);
+ psoff = SVAL(req->vwv+10, 0);
+ pscnt = SVAL(req->vwv+9, 0);
- if (dscnt > tdscnt || pscnt > tpscnt)
+ result = allow_new_trans(conn->pending_trans, req->mid);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(2, ("Got invalid trans request: %s\n",
+ nt_errstr(result)));
+ reply_nterror(req, result);
+ END_PROFILE(SMBtrans);
+ return;
+ }
+
+ if ((state = TALLOC_P(conn, struct trans_state)) == NULL) {
+ DEBUG(0, ("talloc failed\n"));
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ END_PROFILE(SMBtrans);
+ return;
+ }
+
+ state->cmd = SMBtrans;
+
+ state->mid = req->mid;
+ state->vuid = req->vuid;
+ state->setup_count = CVAL(req->vwv+13, 0);
+ state->setup = NULL;
+ state->total_param = SVAL(req->vwv+0, 0);
+ state->param = NULL;
+ state->total_data = SVAL(req->vwv+1, 0);
+ state->data = NULL;
+ 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_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 (tdscnt) {
- if((data = (char *)malloc(tdscnt)) == NULL) {
- DEBUG(0,("reply_trans: data malloc fail for %u bytes !\n", tdscnt));
- END_PROFILE(SMBtrans);
- return(ERROR_DOS(ERRDOS,ERRnomem));
- }
- if ((dsoff+dscnt < dsoff) || (dsoff+dscnt < dscnt))
- goto bad_param;
- if (smb_base(inbuf)+dsoff+dscnt > inbuf + size)
+
+ 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);
+ if (state->data == NULL) {
+ DEBUG(0,("reply_trans: data malloc fail for %u "
+ "bytes !\n", (unsigned int)state->total_data));
+ TALLOC_FREE(state);
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ END_PROFILE(SMBtrans);
+ return;
+ }
+ /* null-terminate the slack space */
+ memset(&state->data[state->total_data], 0, 100);
- memcpy(data,smb_base(inbuf)+dsoff,dscnt);
+ memcpy(state->data,smb_base(req->inbuf)+dsoff,dscnt);
}
- if (tpscnt) {
- if((params = (char *)malloc(tpscnt)) == NULL) {
- DEBUG(0,("reply_trans: param malloc fail for %u bytes !\n", tpscnt));
- SAFE_FREE(data);
+ 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);
+ if (state->param == NULL) {
+ DEBUG(0,("reply_trans: param malloc fail for %u "
+ "bytes !\n", (unsigned int)state->total_param));
+ SAFE_FREE(state->data);
+ TALLOC_FREE(state);
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
END_PROFILE(SMBtrans);
- return(ERROR_DOS(ERRDOS,ERRnomem));
+ return;
}
- if ((psoff+pscnt < psoff) || (psoff+pscnt < pscnt))
- goto bad_param;
- if (smb_base(inbuf)+psoff+pscnt > inbuf + size)
- goto bad_param;
+ /* null-terminate the slack space */
+ memset(&state->param[state->total_param], 0, 100);
- memcpy(params,smb_base(inbuf)+psoff,pscnt);
+ memcpy(state->param,smb_base(req->inbuf)+psoff,pscnt);
}
- if (suwcnt) {
+ state->received_data = dscnt;
+ state->received_param = pscnt;
+
+ if (state->setup_count) {
unsigned int i;
- if((setup = (uint16 *)malloc(suwcnt*sizeof(uint16))) == NULL) {
- DEBUG(0,("reply_trans: setup malloc fail for %u bytes !\n", (unsigned int)(suwcnt * sizeof(uint16))));
- SAFE_FREE(data);
- SAFE_FREE(params);
+
+ /*
+ * 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 "
+ "bytes !\n", (unsigned int)
+ (state->setup_count * sizeof(uint16))));
+ SAFE_FREE(state->data);
+ SAFE_FREE(state->param);
+ TALLOC_FREE(state);
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
END_PROFILE(SMBtrans);
- return(ERROR_DOS(ERRDOS,ERRnomem));
+ return;
}
- if (inbuf+smb_vwv14+(suwcnt*SIZEOFWORD) > inbuf + size)
- goto bad_param;
- if ((smb_vwv14+(suwcnt*SIZEOFWORD) < smb_vwv14) || (smb_vwv14+(suwcnt*SIZEOFWORD) < (suwcnt*SIZEOFWORD)))
- goto bad_param;
- for (i=0;i<suwcnt;i++)
- setup[i] = SVAL(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;
+
+ if ((state->received_param != state->total_param) ||
+ (state->received_data != state->total_data)) {
+ DLIST_ADD(conn->pending_trans, state);
- if (pscnt < tpscnt || dscnt < tdscnt) {
/* We need to send an interim response then receive the rest
of the parameter/data bytes */
- outsize = set_message(outbuf,0,0,True);
- show_msg(outbuf);
- if (!send_smb(smbd_server_fd(),outbuf))
- exit_server("reply_trans: send_smb failed.");
- }
-
- /* receive the rest of the trans packet */
- while (pscnt < tpscnt || dscnt < tdscnt) {
- BOOL ret;
- unsigned int pcnt,poff,dcnt,doff,pdisp,ddisp;
-
- ret = receive_next_smb(inbuf,bufsize,SMB_SECONDARY_WAIT);
-
- if ((ret && (CVAL(inbuf, smb_com) != SMBtranss)) || !ret) {
- if(ret) {
- DEBUG(0,("reply_trans: Invalid secondary trans packet\n"));
- } else {
- DEBUG(0,("reply_trans: %s in getting secondary trans response.\n",
- (smb_read_error == READ_ERROR) ? "error" : "timeout" ));
- }
- SAFE_FREE(params);
- SAFE_FREE(data);
- SAFE_FREE(setup);
- END_PROFILE(SMBtrans);
- return(ERROR_DOS(ERRSRV,ERRerror));
- }
+ reply_outbuf(req, 0, 0);
+ show_msg((char *)req->outbuf);
+ END_PROFILE(SMBtrans);
+ return;
+ }
- show_msg(inbuf);
-
- /* Revise total_params and total_data in case they have changed downwards */
- if (SVAL(inbuf,smb_vwv0) < tpscnt)
- tpscnt = SVAL(inbuf,smb_vwv0);
- if (SVAL(inbuf,smb_vwv1) < tdscnt)
- tdscnt = SVAL(inbuf,smb_vwv1);
-
- pcnt = SVAL(inbuf,smb_vwv2);
- poff = SVAL(inbuf,smb_vwv3);
- pdisp = SVAL(inbuf,smb_vwv4);
-
- dcnt = SVAL(inbuf,smb_vwv5);
- doff = SVAL(inbuf,smb_vwv6);
- ddisp = SVAL(inbuf,smb_vwv7);
-
- pscnt += pcnt;
- dscnt += dcnt;
-
- if (dscnt > tdscnt || pscnt > tpscnt)
- goto bad_param;
-
- if (pcnt) {
- if (pdisp+pcnt >= tpscnt)
- goto bad_param;
- if ((pdisp+pcnt < pdisp) || (pdisp+pcnt < pcnt))
- goto bad_param;
- if (smb_base(inbuf) + poff + pcnt >= inbuf + bufsize)
- goto bad_param;
- if (params + pdisp < params)
- goto bad_param;
-
- memcpy(params+pdisp,smb_base(inbuf)+poff,pcnt);
- }
+ handle_trans(conn, req, state);
- if (dcnt) {
- if (ddisp+dcnt >= tdscnt)
- goto bad_param;
- if ((ddisp+dcnt < ddisp) || (ddisp+dcnt < dcnt))
- goto bad_param;
- if (smb_base(inbuf) + doff + dcnt >= inbuf + bufsize)
- goto bad_param;
- if (data + ddisp < data)
- goto bad_param;
-
- memcpy(data+ddisp,smb_base(inbuf)+doff,dcnt);
+ SAFE_FREE(state->data);
+ SAFE_FREE(state->param);
+ TALLOC_FREE(state);
+
+ END_PROFILE(SMBtrans);
+ return;
+
+ bad_param:
+
+ DEBUG(0,("reply_trans: invalid trans parameters\n"));
+ SAFE_FREE(state->data);
+ SAFE_FREE(state->param);
+ TALLOC_FREE(state);
+ END_PROFILE(SMBtrans);
+ reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return;
+}
+
+/****************************************************************************
+ Reply to a secondary SMBtrans.
+ ****************************************************************************/
+
+void reply_transs(struct smb_request *req)
+{
+ connection_struct *conn = req->conn;
+ unsigned int pcnt,poff,dcnt,doff,pdisp,ddisp;
+ struct trans_state *state;
+
+ START_PROFILE(SMBtranss);
+
+ show_msg((char *)req->inbuf);
+
+ if (req->wct < 8) {
+ reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ END_PROFILE(SMBtranss);
+ return;
+ }
+
+ for (state = conn->pending_trans; state != NULL;
+ state = state->next) {
+ if (state->mid == req->mid) {
+ break;
}
}
-
-
- DEBUG(3,("trans <%s> data=%u params=%u setup=%u\n",
- name,tdscnt,tpscnt,suwcnt));
-
- /*
- * WinCE wierdness....
- */
- if (name[0] == '\\' && (StrnCaseCmp(&name[1],local_machine, strlen(local_machine)) == 0) &&
- (name[strlen(local_machine)+1] == '\\'))
- name_offset = strlen(local_machine)+1;
+ if ((state == NULL) || (state->cmd != SMBtrans)) {
+ reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ END_PROFILE(SMBtranss);
+ return;
+ }
- if (strnequal(&name[name_offset], "\\PIPE", strlen("\\PIPE"))) {
- name_offset += strlen("\\PIPE");
+ /* Revise total_params and total_data in case they have changed
+ * downwards */
- /* Win9x weirdness. When talking to a unicode server Win9x
- only sends \PIPE instead of \PIPE\ */
+ 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);
- if (name[name_offset] == '\\')
- name_offset++;
+ pcnt = SVAL(req->vwv+2, 0);
+ poff = SVAL(req->vwv+3, 0);
+ pdisp = SVAL(req->vwv+4, 0);
- DEBUG(5,("calling named_pipe\n"));
- outsize = named_pipe(conn,vuid,outbuf,
- name+name_offset,setup,data,params,
- suwcnt,tdscnt,tpscnt,msrcnt,mdrcnt,mprcnt);
- } else {
- DEBUG(3,("invalid pipe name\n"));
- outsize = 0;
- }
+ dcnt = SVAL(req->vwv+5, 0);
+ doff = SVAL(req->vwv+6, 0);
+ ddisp = SVAL(req->vwv+7, 0);
-
- SAFE_FREE(data);
- SAFE_FREE(params);
- SAFE_FREE(setup);
-
- if (close_on_completion)
- close_cnum(conn,vuid);
+ state->received_param += pcnt;
+ state->received_data += dcnt;
- if (one_way) {
- END_PROFILE(SMBtrans);
- return(-1);
+ if ((state->received_data > state->total_data) ||
+ (state->received_param > state->total_param))
+ goto bad_param;
+
+ if (pcnt) {
+ 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);
}
-
- if (outsize == 0) {
- END_PROFILE(SMBtrans);
- return(ERROR_DOS(ERRSRV,ERRnosupport));
+
+ if (dcnt) {
+ 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);
}
-
- END_PROFILE(SMBtrans);
- return(outsize);
+ if ((state->received_param < state->total_param) ||
+ (state->received_data < state->total_data)) {
+ END_PROFILE(SMBtranss);
+ return;
+ }
+
+ handle_trans(conn, req, state);
+
+ DLIST_REMOVE(conn->pending_trans, state);
+ SAFE_FREE(state->data);
+ SAFE_FREE(state->param);
+ TALLOC_FREE(state);
+
+ END_PROFILE(SMBtranss);
+ return;
bad_param:
- DEBUG(0,("reply_trans: invalid trans parameters\n"));
- SAFE_FREE(data);
- SAFE_FREE(params);
- SAFE_FREE(setup);
- END_PROFILE(SMBtrans);
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ DEBUG(0,("reply_transs: invalid trans parameters\n"));
+ DLIST_REMOVE(conn->pending_trans, state);
+ SAFE_FREE(state->data);
+ SAFE_FREE(state->param);
+ TALLOC_FREE(state);
+ reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ END_PROFILE(SMBtranss);
+ return;
}
git.samba.org / samba.git / blobdiff