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sysadm |
1.1 |
/*
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* Copyright (C) 1999,2000 Ross Combs (rocombs@cs.nmsu.edu)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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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*
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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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "common/setup_before.h"
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#include <stdio.h>
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#ifdef HAVE_STDDEF_H
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# include <stddef.h>
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#else
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# ifndef NULL
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# define NULL ((void *)0)
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# endif
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_MEMORY_H
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# include <memory.h>
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#endif
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#include "compat/memset.h"
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#include <errno.h>
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#include "compat/strerror.h"
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#ifdef TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#else
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# ifdef HAVE_SYS_FILE_H
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# include <sys/file.h>
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# endif
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#include "compat/socket.h"
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#include "compat/recv.h"
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#include "compat/send.h"
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#ifdef HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include "compat/netinet_in.h"
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#include "compat/psock.h"
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#include "common/packet.h"
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#include "common/init_protocol.h"
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#include "common/udp_protocol.h"
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#include "common/tag.h"
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#include "common/bn_type.h"
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#include "common/field_sizes.h"
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#include "common/network.h"
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#include "client.h"
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#include "udptest.h"
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#include "common/setup_after.h"
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#ifdef CLIENTDEBUG
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#define dprintf printf
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#else
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#define dprintf if (0) printf
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#endif
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extern int client_udptest_setup(char const * progname, unsigned short * lsock_port_ret)
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{
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int lsock;
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struct sockaddr_in laddr;
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unsigned short lsock_port;
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if (!progname)
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{
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fprintf(stderr,"got NULL progname\n");
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return -1;
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}
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if ((lsock = psock_socket(PF_INET,SOCK_DGRAM,PSOCK_IPPROTO_UDP))<0)
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{
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fprintf(stderr,"%s: could not create UDP socket (psock_socket: %s)\n",progname,pstrerror(psock_errno()));
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return -1;
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}
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if (psock_ctl(lsock,PSOCK_NONBLOCK)<0)
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fprintf(stderr,"%s: could not set UDP socket to non-blocking mode (psock_ctl: %s)\n",progname,pstrerror(psock_errno()));
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for (lsock_port=BNETD_MIN_TEST_PORT; lsock_port<=BNETD_MAX_TEST_PORT; lsock_port++)
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{
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memset(&laddr,0,sizeof(laddr));
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laddr.sin_family = PSOCK_AF_INET;
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laddr.sin_port = htons(lsock_port);
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laddr.sin_addr.s_addr = htonl(INADDR_ANY);
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if (psock_bind(lsock,(struct sockaddr *)&laddr,(psock_t_socklen)sizeof(laddr))==0)
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break;
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if (lsock_port==BNETD_MIN_TEST_PORT)
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dprintf("Could not bind to standard UDP port %hu, trying others. (psock_bind: %s)\n",BNETD_MIN_TEST_PORT,pstrerror(psock_errno()));
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}
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if (lsock_port>BNETD_MAX_TEST_PORT)
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{
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fprintf(stderr,"%s: could not bind to any UDP port %hu through %hu (psock_bind: %s)\n",progname,BNETD_MIN_TEST_PORT,BNETD_MAX_TEST_PORT,pstrerror(psock_errno()));
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psock_close(lsock);
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return -1;
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}
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if (lsock_port_ret)
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*lsock_port_ret = lsock_port;
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return lsock;
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}
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extern int client_udptest_recv(char const * progname, int lsock, unsigned short lsock_port, unsigned int timeout)
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{
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int len;
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unsigned int count;
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t_packet * rpacket;
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time_t start;
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if (!progname)
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{
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fprintf(stderr,"%s: got NULL progname\n",progname);
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return -1;
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}
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if (!(rpacket = packet_create(packet_class_bnet)))
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{
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fprintf(stderr,"%s: could not create packet\n",progname);
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return -1;
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}
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start = time(NULL);
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count = 0;
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while (start+(time_t)timeout>=time(NULL)) /* timeout after a few seconds from last packet */
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{
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if ((len = psock_recv(lsock,packet_get_raw_data_build(rpacket,0),MAX_PACKET_SIZE,0))<0)
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{
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if (psock_errno()!=PSOCK_EAGAIN && psock_errno()!=PSOCK_EWOULDBLOCK)
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fprintf(stderr,"%s: failed to receive UDPTEST on port %hu (psock_recv: %s)\n",progname,lsock_port,pstrerror(psock_errno()));
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continue;
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}
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packet_set_size(rpacket,len);
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if (packet_get_type(rpacket)!=SERVER_UDPTEST)
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{
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dprintf("Got unexpected UDP packet type %u on port %hu\n",packet_get_type(rpacket),lsock_port);
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continue;
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}
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if (bn_int_tag_eq(rpacket->u.server_udptest.bnettag,BNETTAG)<0)
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{
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fprintf(stderr,"%s: got bad UDPTEST packet on port %hu\n",progname,lsock_port);
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continue;
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}
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count++;
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if (count>=2)
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break;
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start = time(NULL);
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}
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packet_destroy(rpacket);
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if (count<2)
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{
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printf("Only received %d UDP packets on port %hu. Connection may be slow or firewalled.\n",count,lsock_port);
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return -1;
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}
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return 0;
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}
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