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Viewing changes to source4/libcli/smb2/negprot.c

  • Committer: Chuck Short
  • Date: 2010-09-28 20:38:39 UTC
  • Revision ID: zulcss@ubuntu.com-20100928203839-pgjulytsi9ue63x1
Initial version

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source4/libcli/smb2/negprot.c
 
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/* 
 
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   Unix SMB/CIFS implementation.
 
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   SMB2 client negprot handling
 
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   Copyright (C) Andrew Tridgell 2005
 
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   This program is free software; you can redistribute it and/or modify
 
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   it under the terms of the GNU General Public License as published by
 
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   the Free Software Foundation; either version 3 of the License, or
 
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   (at your option) any later version.
 
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   This program is distributed in the hope that it will be useful,
 
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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   GNU General Public License for more details.
 
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   You should have received a copy of the GNU General Public License
 
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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*/
 
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#include "includes.h"
 
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#include "libcli/raw/libcliraw.h"
 
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#include "libcli/raw/raw_proto.h"
 
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#include "libcli/smb2/smb2.h"
 
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#include "libcli/smb2/smb2_calls.h"
 
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#include "librpc/ndr/libndr.h"
 
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/*
 
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  send a negprot request
 
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*/
 
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struct smb2_request *smb2_negprot_send(struct smb2_transport *transport, 
 
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                                       struct smb2_negprot *io)
 
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{
 
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        struct smb2_request *req;
 
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        uint16_t size = 0x24 + io->in.dialect_count*2;
 
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        enum ndr_err_code ndr_err;
 
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        int i;
 
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        req = smb2_request_init(transport, SMB2_OP_NEGPROT, size, false, 0);
 
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        if (req == NULL) return NULL;
 
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        SSVAL(req->out.body, 0x00, 0x24);
 
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        SSVAL(req->out.body, 0x02, io->in.dialect_count);
 
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        SSVAL(req->out.body, 0x04, io->in.security_mode);
 
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        SSVAL(req->out.body, 0x06, io->in.reserved);
 
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        SIVAL(req->out.body, 0x08, io->in.capabilities);
 
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        ndr_err = smbcli_push_guid(req->out.body, 0x0C, &io->in.client_guid);
 
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        if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 
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                talloc_free(req);
 
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                return NULL;
 
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        }
 
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        smbcli_push_nttime(req->out.body, 0x1C, io->in.start_time);
 
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        for (i=0;i<io->in.dialect_count;i++) {
 
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                SSVAL(req->out.body, 0x24 + i*2, io->in.dialects[i]);           
 
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        }
 
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        smb2_transport_send(req);
 
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        return req;
 
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}
 
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/*
 
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  recv a negprot reply
 
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*/
 
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NTSTATUS smb2_negprot_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx, 
 
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                           struct smb2_negprot *io)
 
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{
 
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        NTSTATUS status;
 
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        enum ndr_err_code ndr_err;
 
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        if (!smb2_request_receive(req) ||
 
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            smb2_request_is_error(req)) {
 
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                return smb2_request_destroy(req);
 
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        }
 
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        SMB2_CHECK_PACKET_RECV(req, 0x40, true);
 
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        io->out.security_mode      = SVAL(req->in.body, 0x02);
 
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        io->out.dialect_revision   = SVAL(req->in.body, 0x04);
 
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        io->out.reserved           = SVAL(req->in.body, 0x06);
 
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        ndr_err = smbcli_pull_guid(req->in.body, 0x08, &io->in.client_guid);
 
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        if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 
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                smb2_request_destroy(req);
 
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                return NT_STATUS_INTERNAL_ERROR;
 
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        }
 
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        io->out.capabilities       = IVAL(req->in.body, 0x18);
 
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        io->out.max_transact_size  = IVAL(req->in.body, 0x1C);
 
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        io->out.max_read_size      = IVAL(req->in.body, 0x20);
 
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        io->out.max_write_size     = IVAL(req->in.body, 0x24);
 
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        io->out.system_time        = smbcli_pull_nttime(req->in.body, 0x28);
 
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        io->out.server_start_time  = smbcli_pull_nttime(req->in.body, 0x30);
 
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        io->out.reserved2          = IVAL(req->in.body, 0x3C);
 
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        status = smb2_pull_o16s16_blob(&req->in, mem_ctx, req->in.body+0x38, &io->out.secblob);
 
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        if (!NT_STATUS_IS_OK(status)) {
 
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                smb2_request_destroy(req);
 
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                return status;
 
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        }
 
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        return smb2_request_destroy(req);
 
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}
 
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/*
 
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  sync negprot request
 
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*/
 
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NTSTATUS smb2_negprot(struct smb2_transport *transport, 
 
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                      TALLOC_CTX *mem_ctx, struct smb2_negprot *io)
 
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{
 
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        struct smb2_request *req = smb2_negprot_send(transport, io);
 
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        return smb2_negprot_recv(req, mem_ctx, io);
 
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}