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/******************************************************************************/
/* */
/* X r d C m s T a l k . c c */
/* */
/* (c) 2007 by the Board of Trustees of the Leland Stanford, Jr., University */
/* All Rights Reserved */
/* Produced by Andrew Hanushevsky for Stanford University under contract */
/* DE-AC02-76-SFO0515 with the Department of Energy */
/* */
/* This file is part of the XRootD software suite. */
/* */
/* XRootD is free software: you can redistribute it and/or modify it under */
/* the terms of the GNU Lesser General Public License as published by the */
/* Free Software Foundation, either version 3 of the License, or (at your */
/* option) any later version. */
/* */
/* XRootD 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 Lesser General Public */
/* License for more details. */
/* */
/* You should have received a copy of the GNU Lesser General Public License */
/* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
/* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
/* */
/* The copyright holder's institutional names and contributor's names may not */
/* be used to endorse or promote products derived from this software without */
/* specific prior written permission of the institution or contributor. */
/******************************************************************************/
#include <sys/types.h>
#include <netinet/in.h>
#include <cinttypes>
#include "XProtocol/YProtocol.hh"
#include "Xrd/XrdLink.hh"
#include "XrdCms/XrdCmsTalk.hh"
using namespace XrdCms;
/******************************************************************************/
/* A t t e n d */
/******************************************************************************/
const char *XrdCmsTalk::Attend(XrdLink *Link, XrdCms::CmsRRHdr &Hdr,
char *buff, int blen,
int &rlen, int TimeOut)
{
// First obtain the complete header
//
if (Link->Recv((char *)&Hdr, sizeof(Hdr), TimeOut) != sizeof(Hdr))
return "header not sent";
// Decode the length and make sure it fits in the buffer
//
rlen = static_cast<int>(ntohs(Hdr.datalen));
if (rlen > blen) return "data too long";
// Get the actual data
//
if (Link->Recv(buff,rlen,TimeOut) != rlen) return "data not received";
// All done
//
return 0;
}
/******************************************************************************/
/* C o m p l a i n */
/******************************************************************************/
int XrdCmsTalk::Complain(XrdLink *Link, int ecode, const char *msg)
{
static const int xNum = 2;
struct iovec Liov[xNum];
int mlen = strlen(msg)+1;
CmsResponse LEResp={{0, kYR_error, 0, 0}, htonl((unsigned int)ecode)};
// Fill out header and iovector
//
LEResp.Hdr.datalen = htons(static_cast<kXR_unt16>(mlen+sizeof(LEResp.Val)));
Liov[0].iov_base = (char *)&LEResp;
Liov[0].iov_len = sizeof(LEResp);
Liov[1].iov_base = (char *)msg;
Liov[1].iov_len = mlen;
// Send off the data
//
Link->Send(Liov, xNum);
return 0;
}
/******************************************************************************/
/* R e q u e s t */
/******************************************************************************/
const char *XrdCmsTalk::Request(XrdLink *Link, XrdCms::CmsRRHdr &Hdr,
char *buff, int blen)
{
struct iovec ioV[2] = {{(char *)&Hdr, sizeof(Hdr)},
{(char *)buff, (size_t)blen}};
Hdr.datalen = htons(static_cast<unsigned short>(blen));
// Send the actual data
//
if (Link->Send(ioV, 2) < 0) return "request not sent";
return 0;
}
/******************************************************************************/
/* R e s p o n d */
/******************************************************************************/
const char *XrdCmsTalk::Respond(XrdLink *Link, XrdCms::CmsRspCode rcode,
char *buff, int blen)
{
static const unsigned short ovhd = sizeof(kXR_unt32);
CmsResponse Resp = {{0, (kXR_char)rcode, 0,
htons(static_cast<unsigned short>(blen+ovhd))}, 0};
struct iovec ioV[2] = {{(char *)&Resp, sizeof(Resp)},
{ buff, (size_t)blen}};
// Send the actual data
//
if (Link->Send(ioV, 2) < 0) return "response not sent";
return 0;
}
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