source4/libcli/raw/rawnegotiate.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    SMB client negotiate context management functions
   5
   6    Copyright (C) Andrew Tridgell 1994-2005
   7    Copyright (C) James Myers 2003 <myersjj@samba.org>
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include <tevent.h>
  25 #include "system/time.h"
  26 #include "libcli/raw/libcliraw.h"
  27 #include "libcli/raw/raw_proto.h"
  28 #include "../libcli/smb/smbXcli_base.h"
  29 #include "../lib/util/tevent_ntstatus.h"
  30
  31 struct smb_raw_negotiate_state {
  32         struct smbcli_transport *transport;
  33 };
  34
  35 static void smb_raw_negotiate_done(struct tevent_req *subreq);
  36
  37 struct tevent_req *smb_raw_negotiate_send(TALLOC_CTX *mem_ctx,
  38                                           struct tevent_context *ev,
  39                                           struct smbcli_transport *transport,
  40                                           int maxprotocol)
  41 {
  42         struct tevent_req *req;
  43         struct smb_raw_negotiate_state *state;
  44         struct tevent_req *subreq;
  45         uint32_t timeout_msec = transport->options.request_timeout * 1000;
  46
  47         req = tevent_req_create(mem_ctx, &state,
  48                                 struct smb_raw_negotiate_state);;
  49         if (req == NULL) {
  50                 return NULL;
  51         }
  52         state->transport = transport;
  53
  54         subreq = smbXcli_negprot_send(state, ev,
  55                                       transport->conn,
  56                                       timeout_msec,
  57                                       PROTOCOL_CORE,
  58                                       maxprotocol);
  59         if (tevent_req_nomem(subreq, req)) {
  60                 return tevent_req_post(req, ev);
  61         }
  62         tevent_req_set_callback(subreq, smb_raw_negotiate_done, req);
  63
  64         return req;
  65 }
  66
  67 static void smb_raw_negotiate_done(struct tevent_req *subreq)
  68 {
  69         struct tevent_req *req =
  70                 tevent_req_callback_data(subreq,
  71                 struct tevent_req);
  72         struct smb_raw_negotiate_state *state =
  73                 tevent_req_data(req,
  74                 struct smb_raw_negotiate_state);
  75         struct smbcli_negotiate *n = &state->transport->negotiate;
  76         struct smbXcli_conn *c = state->transport->conn;
  77         NTSTATUS status;
  78         NTTIME ntt;
  79
  80         status = smbXcli_negprot_recv(subreq);
  81         TALLOC_FREE(subreq);
  82         if (tevent_req_nterror(req, status)) {
  83                 return;
  84         }
  85
  86         n->protocol = smbXcli_conn_protocol(c);
  87
  88         n->sec_mode = smb1cli_conn_server_security_mode(c);
  89         n->max_mux  = smbXcli_conn_max_requests(c);
  90         n->max_xmit = smb1cli_conn_max_xmit(c);
  91         n->sesskey  = smb1cli_conn_server_session_key(c);
  92         n->capabilities = smb1cli_conn_capabilities(c);;
  93
  94         /* this time arrives in real GMT */
  95         ntt = smbXcli_conn_server_system_time(c);
  96         n->server_time = nt_time_to_unix(ntt);
  97         n->server_zone = smb1cli_conn_server_time_zone(c);
  98
  99         if (n->capabilities & CAP_EXTENDED_SECURITY) {
 100                 const DATA_BLOB *b = smbXcli_conn_server_gss_blob(c);
 101                 if (b) {
 102                         n->secblob = *b;
 103                 }
 104         } else {
 105                 const uint8_t *p = smb1cli_conn_server_challenge(c);
 106                 if (p) {
 107                         n->secblob = data_blob_const(p, 8);
 108                 }
 109         }
 110
 111         n->readbraw_supported = smb1cli_conn_server_readbraw(c);
 112         n->readbraw_supported = smb1cli_conn_server_writebraw(c);
 113         n->lockread_supported = smb1cli_conn_server_lockread(c);
 114
 115         tevent_req_done(req);
 116 }
 117
 118 /*
 119  Send a negprot command.
 120 */
 121 NTSTATUS smb_raw_negotiate_recv(struct tevent_req *req)
 122 {
 123         return tevent_req_simple_recv_ntstatus(req);
 124 }
 125
 126
 127 /*
 128  Send a negprot command (sync interface)
 129 */
 130 NTSTATUS smb_raw_negotiate(struct smbcli_transport *transport, bool unicode, int maxprotocol)
 131 {
 132         NTSTATUS status = NT_STATUS_INTERNAL_ERROR;
 133         struct tevent_req *subreq = NULL;
 134         bool ok;
 135
 136         subreq = smb_raw_negotiate_send(transport,
 137                                         transport->ev,
 138                                         transport,
 139                                         maxprotocol);
 140         if (subreq == NULL) {
 141                 return NT_STATUS_NO_MEMORY;
 142         }
 143
 144         ok = tevent_req_poll(subreq, transport->ev);
 145         if (!ok) {
 146                 status = map_nt_error_from_unix_common(errno);
 147                 goto failed;
 148         }
 149
 150         status = smb_raw_negotiate_recv(subreq);
 151
 152 failed:
 153         TALLOC_FREE(subreq);
 154         return status;
 155 }