source4/libcli/raw/rawnegotiate.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB client negotiate context management functions
   4    Copyright (C) Andrew Tridgell 1994-1998
   5    Copyright (C) James Myers 2003 <myersjj@samba.org>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23
  24 static const struct {
  25         int prot;
  26         const char *name;
  27 } prots[] = {
  28         {PROTOCOL_CORE,"PC NETWORK PROGRAM 1.0"},
  29         {PROTOCOL_COREPLUS,"MICROSOFT NETWORKS 1.03"},
  30         {PROTOCOL_LANMAN1,"MICROSOFT NETWORKS 3.0"},
  31         {PROTOCOL_LANMAN1,"LANMAN1.0"},
  32         {PROTOCOL_LANMAN1,"Windows for Workgroups 3.1a"},
  33         {PROTOCOL_LANMAN2,"LM1.2X002"},
  34         {PROTOCOL_LANMAN2,"DOS LANMAN2.1"},
  35         {PROTOCOL_LANMAN2,"Samba"},
  36         {PROTOCOL_NT1,"NT LANMAN 1.0"},
  37         {PROTOCOL_NT1,"NT LM 0.12"},
  38 };
  39
  40 /****************************************************************************
  41  Send a negprot command.
  42 ****************************************************************************/
  43 struct cli_request *smb_negprot_send(struct cli_transport *transport, int maxprotocol)
  44 {
  45         struct cli_request *req;
  46         int i;
  47
  48         req = cli_request_setup_transport(transport, SMBnegprot, 0, 0);
  49         if (!req) {
  50                 return NULL;
  51         }
  52
  53         /* setup the protocol strings */
  54         for (i=0; i < ARRAY_SIZE(prots) && prots[i].prot <= maxprotocol; i++) {
  55                 cli_req_append_bytes(req, "\2", 1);
  56                 cli_req_append_string(req, prots[i].name, STR_TERMINATE | STR_ASCII);
  57         }
  58
  59         if (!cli_request_send(req)) {
  60                 cli_request_destroy(req);
  61                 return NULL;
  62         }
  63
  64         return req;
  65 }
  66
  67 /****************************************************************************
  68  Send a negprot command.
  69 ****************************************************************************/
  70 NTSTATUS smb_raw_negotiate(struct cli_transport *transport)
  71 {
  72         struct cli_request *req;
  73         int protocol;
  74
  75         req = smb_negprot_send(transport, PROTOCOL_NT1);
  76         if (!req) {
  77                 return NT_STATUS_UNSUCCESSFUL;
  78         }
  79
  80         if (!cli_request_receive(req) ||
  81             cli_request_is_error(req)) {
  82                 return cli_request_destroy(req);
  83         }
  84
  85         CLI_CHECK_MIN_WCT(req, 1);
  86
  87         protocol = SVALS(req->in.vwv, VWV(0));
  88
  89         if (protocol >= ARRAY_SIZE(prots) || protocol < 0) {
  90                 req->status = NT_STATUS_UNSUCCESSFUL;
  91                 return cli_request_destroy(req);
  92         }
  93
  94         transport->negotiate.protocol = prots[protocol].prot;
  95
  96         if (transport->negotiate.protocol >= PROTOCOL_NT1) {
  97                 NTTIME ntt;
  98
  99                 /* NT protocol */
 100                 CLI_CHECK_WCT(req, 17);
 101                 transport->negotiate.sec_mode = CVAL(req->in.vwv,VWV(1));
 102                 transport->negotiate.max_mux  = SVAL(req->in.vwv,VWV(1)+1);
 103                 transport->negotiate.max_xmit = IVAL(req->in.vwv,VWV(3)+1);
 104                 transport->negotiate.sesskey  = IVAL(req->in.vwv,VWV(7)+1);
 105                 transport->negotiate.server_zone = SVALS(req->in.vwv,VWV(15)+1) * 60;
 106
 107                 /* this time arrives in real GMT */
 108                 ntt = cli_pull_nttime(req->in.vwv, VWV(11)+1);
 109                 transport->negotiate.server_time = nt_time_to_unix(&ntt);
 110                 transport->negotiate.capabilities = IVAL(req->in.vwv,VWV(9)+1);
 111
 112                 transport->negotiate.secblob = cli_req_pull_blob(req, transport->mem_ctx, req->in.data, req->in.data_size);
 113                 if (transport->negotiate.capabilities & CAP_RAW_MODE) {
 114                         transport->negotiate.readbraw_supported = True;
 115                         transport->negotiate.writebraw_supported = True;
 116                 }
 117
 118                 /* work out if they sent us a workgroup */
 119                 if ((transport->negotiate.capabilities & CAP_EXTENDED_SECURITY) &&
 120                     req->in.data_size > 16) {
 121                         cli_req_pull_string(req, transport->mem_ctx, &transport->negotiate.server_domain,
 122                                             req->in.data+16,
 123                                             req->in.data_size-16, STR_UNICODE|STR_NOALIGN);
 124                 }
 125         } else if (transport->negotiate.protocol >= PROTOCOL_LANMAN1) {
 126                 CLI_CHECK_WCT(req, 13);
 127                 transport->negotiate.sec_mode = SVAL(req->in.vwv,VWV(1));
 128                 transport->negotiate.max_xmit = SVAL(req->in.vwv,VWV(2));
 129                 transport->negotiate.sesskey =  IVAL(req->in.vwv,VWV(6));
 130                 transport->negotiate.server_zone = SVALS(req->in.vwv,VWV(10)) * 60;
 131
 132                 /* this time is converted to GMT by make_unix_date */
 133                 transport->negotiate.server_time = make_unix_date(req->in.vwv+VWV(8));
 134                 if ((SVAL(req->in.vwv,VWV(5)) & 0x1)) {
 135                         transport->negotiate.readbraw_supported = 1;
 136                 }
 137                 if ((SVAL(req->in.vwv,VWV(5)) & 0x2)) {
 138                         transport->negotiate.writebraw_supported = 1;
 139                 }
 140                 transport->negotiate.secblob = cli_req_pull_blob(req, transport->mem_ctx,
 141                                                                  req->in.data, req->in.data_size);
 142         } else {
 143                 /* the old core protocol */
 144                 transport->negotiate.sec_mode = 0;
 145                 transport->negotiate.server_time = time(NULL);
 146                 transport->negotiate.max_xmit = ~0;
 147                 transport->negotiate.server_zone = TimeDiff(time(NULL));
 148         }
 149
 150         /* a way to force ascii SMB */
 151         if (getenv("CLI_FORCE_ASCII")) {
 152                 transport->negotiate.capabilities &= ~CAP_UNICODE;
 153         }
 154
 155 failed:
 156         return cli_request_destroy(req);
 157 }