/* Unix SMB/Netbios implementation. Version 1.9. SMB NT transaction handling Copyright (C) Jeremy Allison 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 (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. */ #include "includes.h" extern int DEBUGLEVEL; extern int Protocol; extern connection_struct Connections[]; extern files_struct Files[]; extern int Client; extern int oplock_sock; extern int smb_read_error; extern int global_oplock_break; static char *known_nt_pipes[] = { "\\LANMAN", "\\srvsvc", "\\samr", "\\wkssvc", "\\NETLOGON", "\\ntlsa", "\\ntsvcs", "\\lsass", "\\lsarpc", NULL }; /**************************************************************************** reply to an unsolicited SMBNTtranss - just ignore it! ****************************************************************************/ int reply_nttranss(char *inbuf,char *outbuf,int length,int bufsize) { DEBUG(4,("Ignoring nttranss of length %d\n",length)); return(-1); } /**************************************************************************** reply to a SMBNTtrans ****************************************************************************/ int reply_nttrans(char *inbuf,char *outbuf,int length,int bufsize) { int outsize = 0; int cnum = SVAL(inbuf,smb_tid); #if 0 uint16 max_setup_count = CVAL(inbuf, smb_nt_MaxSetupCount); uint32 max_parameter_count = IVAL(inbuf, smb_nt_MaxParameterCount); uint32 max_data_count = IVAL(inbuf,smb_nt_MaxDataCount); #endif uint32 total_parameter_count = IVAL(inbuf, smb_nt_TotalParameterCount); uint32 total_data_count = IVAL(inbuf, smb_nt_TotalDataCount); uint32 parameter_count = IVAL(inbuf,smb_nt_ParameterCount); uint32 parameter_offset = IVAL(inbuf,smb_nt_ParameterOffset); uint32 data_count = IVAL(inbuf,smb_nt_DataCount); uint32 data_offset = IVAL(inbuf,smb_nt_DataOffset); uint16 setup_count = SVAL(inbuf,smb_nt_SetupCount); uint16 function_code = SVAL( inbuf, smb_nt_Function); char *params = NULL, *data = NULL, *setup = NULL; uint32 num_params_sofar, num_data_sofar; if(global_oplock_break && (function_code == NT_TRANSACT_CREATE)) { /* * Queue this open message as we are the process of an oplock break. */ DEBUG(2,("%s: reply_nttrans: queueing message NT_TRANSACT_CREATE \ due to being in oplock break state.\n", timestring() )); push_smb_message( inbuf, length); return -1; } outsize = set_message(outbuf,0,0,True); /* * All nttrans messages we handle have smb_wcnt == 19 + setup_count. * Ensure this is so as a sanity check. */ if(CVAL(inbuf, smb_wcnt) != 19 + setup_count) { DEBUG(2,("Invalid smb_wcnt in trans2 call\n")); return(ERROR(ERRSRV,ERRerror)); } /* Allocate the space for the setup, the maximum needed parameters and data */ if(setup_count > 0) setup = (char *)malloc(setup_count); if (total_parameter_count > 0) params = (char *)malloc(total_parameter_count); if (total_data_count > 0) data = (char *)malloc(total_data_count); if ((total_parameter_count && !params) || (total_data_count && !data) || (setup_count && !setup)) { DEBUG(0,("reply_nttrans : Out of memory\n")); return(ERROR(ERRDOS,ERRnomem)); } /* Copy the param and data bytes sent with this request into the params buffer */ num_params_sofar = parameter_count; num_data_sofar = data_count; if (parameter_count > total_parameter_count || data_count > total_data_count) exit_server("reply_nttrans: invalid sizes in packet.\n"); if(setup) memcpy( setup, &inbuf[smb_nt_SetupStart], setup_count); if(params) memcpy( params, smb_base(inbuf) + parameter_offset, parameter_count); if(data) memcpy( data, smb_base(inbuf) + data_offset, data_count); if(num_data_sofar < total_data_count || num_params_sofar < total_parameter_count) { /* We need to send an interim response then receive the rest of the parameter/data bytes */ outsize = set_message(outbuf,0,0,True); send_smb(Client,outbuf); while( num_data_sofar < total_data_count || num_params_sofar < total_parameter_count) { BOOL ret; ret = receive_next_smb(Client,oplock_sock,inbuf,bufsize, SMB_SECONDARY_WAIT); if((ret && (CVAL(inbuf, smb_com) != SMBnttranss)) || !ret) { outsize = set_message(outbuf,0,0,True); if(ret) DEBUG(0,("reply_nttrans: Invalid secondary nttrans packet\n")); else DEBUG(0,("reply_nttrans: %s in getting secondary nttrans response.\n", (smb_read_error == READ_ERROR) ? "error" : "timeout" )); if(params) free(params); if(data) free(data); if(setup) free(setup); return(ERROR(ERRSRV,ERRerror)); } /* Revise total_params and total_data in case they have changed downwards */ total_parameter_count = SIVAL(inbuf, smb_nts_TotalParameterCount); total_data_count = SIVAL(inbuf, smb_nts_TotalDataCount); num_params_sofar += (parameter_count = SIVAL(inbuf,smb_nts_ParameterCount)); num_data_sofar += ( data_count = SIVAL(inbuf, smb_nts_DataCount)); if (num_params_sofar > total_parameter_count || num_data_sofar > total_data_count) exit_server("reply_nttrans2: data overflow in secondary nttrans packet\n"); memcpy( ¶ms[ SIVAL(inbuf, smb_nts_ParameterDisplacement)], smb_base(inbuf) + SVAL(inbuf, smb_nts_ParameterOffset), parameter_count); memcpy( &data[SVAL(inbuf, smb_nts_DataDisplacement)], smb_base(inbuf)+ SVAL(inbuf, smb_nts_DataOffset), data_count); } } if (Protocol >= PROTOCOL_NT1) { uint16 flg2 = SVAL(outbuf,smb_flg2); SSVAL(outbuf,smb_flg2,flg2 | 0x40); /* IS_LONG_NAME */ } /* Now we must call the relevant NT_TRANS function */ switch(function_code) { case NT_TRANSACT_CREATE: outsize = call_nt_transact_create(inbuf, outbuf, bufsize, cnum, &setup, ¶ms, &data); break; case NT_TRANSACT_IOCTL: outsize = call_nt_transact_ioctl(inbuf, outbuf, bufsize, cnum, &setup, ¶ms, &data); break; case NT_TRANSACT_SET_SECURITY_DESC: outsize = call_nt_transact_set_security_desc(inbuf, outbuf, length, bufsize, cnum, &setup, ¶ms, &data); break; case NT_TRANSACT_NOTIFY_CHANGE: outsize = call_nt_transact_notify_change(inbuf, outbuf, length, bufsize, cnum, &setup, ¶ms, &data); break; case NT_TRANSACT_RENAME: outsize = call_nt_transact_rename(inbuf, outbuf, length, bufsize, cnum, &setup, ¶ms, &data); break; case NT_TRANSACT_QUERY_SECURITY_DESC: outsize = call_nt_transact_query_security_desc(inbuf, outbuf, length, bufsize, cnum, &setup, ¶ms, &data, total_data); break; default: /* Error in request */ DEBUG(0,("reply_nttrans: %s Unknown request %d in nttrans call\n",timestring(), tran_call)); if(setup) free(setup); if(params) free(params); if(data) free(data); return (ERROR(ERRSRV,ERRerror)); } /* As we do not know how many data packets will need to be returned here the various call_nt_transact_xxxx calls must send their own. Thus a call_nt_transact_xxxx routine only returns a value other than -1 when it wants to send an error packet. */ if(setup) free(setup); if(params) free(params); if(data) free(data); return outsize; /* If a correct response was needed the call_nt_transact_xxxx calls have already sent it. If outsize != -1 then it is returning an error packet. */ }