Line data    Source code

       1             : /* 
       2             :    Unix SMB/CIFS implementation.
       3             : 
       4             :    SMB2 client notify calls
       5             : 
       6             :    Copyright (C) Stefan Metzmacher 2006
       7             :    
       8             :    This program is free software; you can redistribute it and/or modify
       9             :    it under the terms of the GNU General Public License as published by
      10             :    the Free Software Foundation; either version 3 of the License, or
      11             :    (at your option) any later version.
      12             :    
      13             :    This program is distributed in the hope that it will be useful,
      14             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      15             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      16             :    GNU General Public License for more details.
      17             :    
      18             :    You should have received a copy of the GNU General Public License
      19             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.
      20             : */
      21             : 
      22             : #include "includes.h"
      23             : #include "libcli/raw/libcliraw.h"
      24             : #include "libcli/raw/raw_proto.h"
      25             : #include "libcli/smb2/smb2.h"
      26             : #include "libcli/smb2/smb2_calls.h"
      27             : 
      28             : /*
      29             :   send a notify request
      30             : */
      31        1726 : struct smb2_request *smb2_notify_send(struct smb2_tree *tree, struct smb2_notify *io)
      32             : {
      33          18 :         struct smb2_request *req;
      34          18 :         uint32_t old_timeout;
      35             : 
      36        1726 :         req = smb2_request_init_tree(tree, SMB2_OP_NOTIFY, 0x20, false, 0);
      37        1726 :         if (req == NULL) return NULL;
      38             : 
      39        1726 :         SSVAL(req->out.hdr,  SMB2_HDR_CREDIT,        0x0030);
      40             : 
      41        1726 :         SSVAL(req->out.body, 0x02, io->in.recursive);
      42        1726 :         SIVAL(req->out.body, 0x04, io->in.buffer_size);
      43        1726 :         smb2_push_handle(req->out.body+0x08, &io->in.file.handle);
      44        1726 :         SIVAL(req->out.body, 0x18, io->in.completion_filter);
      45        1726 :         SIVAL(req->out.body, 0x1C, io->in.unknown);
      46             : 
      47        1726 :         req->credit_charge = (MAX(io->in.buffer_size, 1) - 1)/ 65536 + 1;
      48             : 
      49        1726 :         old_timeout = req->transport->options.request_timeout;
      50        1726 :         req->transport->options.request_timeout = 0;
      51        1726 :         smb2_transport_send(req);
      52        1726 :         req->transport->options.request_timeout = old_timeout;
      53             : 
      54        1726 :         return req;
      55             : }
      56             : 
      57             : 
      58             : /*
      59             :   recv a notify reply
      60             : */
      61        1724 : NTSTATUS smb2_notify_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx,
      62             :                           struct smb2_notify *io)
      63             : {
      64          18 :         NTSTATUS status;
      65          18 :         DATA_BLOB blob;
      66          18 :         uint32_t ofs, i;
      67             : 
      68        1742 :         if (!smb2_request_receive(req) || 
      69        1722 :             !smb2_request_is_ok(req)) {
      70        1632 :                 return smb2_request_destroy(req);
      71             :         }
      72             : 
      73          92 :         SMB2_CHECK_PACKET_RECV(req, 0x08, true);
      74             : 
      75          92 :         status = smb2_pull_o16s32_blob(&req->in, mem_ctx, req->in.body+0x02, &blob);
      76          92 :         if (!NT_STATUS_IS_OK(status)) {
      77           0 :                 return status;
      78             :         }
      79             : 
      80          92 :         io->out.changes = NULL;
      81          92 :         io->out.num_changes = 0;
      82             : 
      83             :         /* count them */
      84         562 :         for (ofs=0; blob.length - ofs > 12; ) {
      85         562 :                 uint32_t next = IVAL(blob.data, ofs);
      86         562 :                 io->out.num_changes++;
      87         562 :                 if (next == 0 || (ofs + next) >= blob.length) break;
      88         470 :                 ofs += next;
      89             :         }
      90             : 
      91             :         /* allocate array */
      92          92 :         io->out.changes = talloc_array(mem_ctx, struct notify_changes, io->out.num_changes);
      93          92 :         if (!io->out.changes) {
      94           0 :                 return NT_STATUS_NO_MEMORY;
      95             :         }
      96             : 
      97         654 :         for (i=ofs=0; i<io->out.num_changes; i++) {
      98         562 :                 io->out.changes[i].action = IVAL(blob.data, ofs+4);
      99         562 :                 smbcli_blob_pull_string(NULL, mem_ctx, &blob,
     100         562 :                                         &io->out.changes[i].name,
     101         562 :                                         ofs+8, ofs+12, STR_UNICODE);
     102         562 :                 ofs += IVAL(blob.data, ofs);
     103             :         }
     104             : 
     105          92 :         return smb2_request_destroy(req);
     106             : }
     107             : 
     108             : /*
     109             :   sync notify request
     110             : */
     111          10 : NTSTATUS smb2_notify(struct smb2_tree *tree, TALLOC_CTX *mem_ctx,
     112             :                      struct smb2_notify *io)
     113             : {
     114          10 :         struct smb2_request *req = smb2_notify_send(tree, io);
     115          10 :         return smb2_notify_recv(req, mem_ctx, io);
     116             : }