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/* cvm/client_xfer_local.c - CVM client local transmission library
* Copyright (C) 2010 Bruce Guenter <bruce@untroubled.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <bglibs/sysdeps.h>
#include <unistd.h>
#include <bglibs/socket.h>
#include "v1client.h"
#include "protocol.h"
/* UNIX local-domain socket module invocation ********************************/
unsigned cvm_xfer_local_packets(const char* path,
const struct cvm_packet* request,
struct cvm_packet* response)
{
int sock;
int result;
unsigned io;
unsigned done;
unsigned len;
result = CVME_IO;
response->length = 0;
if ((sock = socket_unixstr()) != -1 &&
socket_connectu(sock, path)) {
for (done = 0, len = request->length; done < len; done += io) {
if ((io = write(sock, request->data+done, len-done)) == 0) break;
if (io == (unsigned)-1) break;
}
socket_shutdown(sock, 0, 1);
if (done >= len) {
for (done = 0; done < CVM_BUFSIZE; done += io) {
if ((io = read(sock, response->data+done, CVM_BUFSIZE-done)) == 0)
break;
if (io == (unsigned)-1) done = CVM_BUFSIZE+1;
}
if (done <= CVM_BUFSIZE) {
response->length = done;
result = 0;
}
}
}
close(sock);
return result;
}
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