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/*
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* Copyright (C) 2000,2001 Onlyer (onlyer@263.net)
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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 "setup.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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#include <ctype.h>
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#ifdef HAVE_STRING_H
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# include <string.h>
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#else
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# ifdef HAVE_STRINGS_H
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# include <strings.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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#endif
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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#else
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# ifdef HAVE_MALLOC_H
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# include <malloc.h>
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# endif
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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 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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#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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#ifdef HAVE_ARPA_INET_H
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# include <arpa/inet.h>
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#endif
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#ifdef HAVE_NETDB_H
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# include <netdb.h>
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#endif
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#include "compat/psock.h"
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#include "net.h"
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#include "common/eventlog.h"
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#include "common/setup_after.h"
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/* FIXME: use addr.h code to do this and make a separate error
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* return path so that 255.255.255.255 isn't an error.
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*/
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extern unsigned long int net_inet_addr(char const * host)
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{
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struct hostent * hp;
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if (isdigit((int)host[0])) {
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return inet_addr(host);
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} else {
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hp=gethostbyname(host);
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if (!hp || !(hp->h_addr_list)) {
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return ~0UL;
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}
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return *(unsigned long *)hp->h_addr_list[0];
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}
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}
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extern int net_socket(int type)
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{
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int sock;
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int val;
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int ipproto;
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if (type==PSOCK_SOCK_STREAM) {
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ipproto = PSOCK_IPPROTO_TCP;
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} else {
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ipproto = PSOCK_IPPROTO_UDP;
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}
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if ((sock=psock_socket(PSOCK_PF_INET, type, ipproto))<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"error creating socket (psock_socket: %s)", pstrerror(psock_errno()));
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return -1;
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}
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val=1;
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if (psock_setsockopt(sock,PSOCK_SOL_SOCKET, PSOCK_SO_KEEPALIVE, &val, sizeof(val))<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"error set socket option KEEPALIVE (psock_setsockopt: %s)",pstrerror(psock_errno()));
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}
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if (psock_ctl(sock,PSOCK_NONBLOCK)<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"error set socket mode to non-block (psock_ctl: %s)",pstrerror(psock_errno()));
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psock_close(sock);
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return -1;
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}
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return sock;
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}
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extern int net_check_connected(int sock)
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{
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int err;
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psock_t_socklen errlen;
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err = 0;
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errlen = sizeof(err);
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if (psock_getsockopt(sock,PSOCK_SOL_SOCKET, PSOCK_SO_ERROR, &err, &errlen)<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"error get socket option SO_ERROR (psock_getsockopt: %s)",pstrerror(psock_errno()));
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return -1;
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}
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if (errlen && err)
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return -1;
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return 0;
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}
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extern int net_listen(unsigned int ip, unsigned int port, int type)
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{
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int sock;
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int val;
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struct sockaddr_in addr;
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int ipproto;
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if (type==PSOCK_SOCK_STREAM) {
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ipproto = PSOCK_IPPROTO_TCP;
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} else {
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ipproto = PSOCK_IPPROTO_UDP;
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}
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if ((sock=psock_socket(PSOCK_PF_INET, type, ipproto))<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"error create listen socket");
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return -1;
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}
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val=1;
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if (psock_setsockopt(sock,PSOCK_SOL_SOCKET,PSOCK_SO_REUSEADDR,&val,sizeof(int))<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"error set socket option SO_REUSEADDR");
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}
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memset(&addr,0,sizeof(addr));
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addr.sin_family=PSOCK_AF_INET;
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addr.sin_port=htons(port);
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addr.sin_addr.s_addr=htonl(ip);
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if (psock_bind(sock,(struct sockaddr *)&addr, sizeof(addr))<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"error bind listen socket");
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psock_close(sock);
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return -1;
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}
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if (psock_listen(sock,LISTEN_QUEUE)<0) {
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eventlog(eventlog_level_error,__FUNCTION__,"error listen socket");
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psock_close(sock);
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return -1;
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}
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return sock;
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}
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extern int net_send_data(int sock, char * buff, int buffsize, int * pos, int * currsize)
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{
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int nsend;
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ASSERT(buff,-1);
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ASSERT(pos,-1);
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if (*pos>buffsize) {
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] send buffer overflow pos=%d buffsize=%d",sock,*pos,buffsize);
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return -1;
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}
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if (*currsize>*pos) {
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] send buffer error currsize=%d pos=%d",sock,*currsize,*pos);
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return -1;
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}
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nsend=psock_send(sock,buff+*pos-*currsize,*currsize,0);
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if (nsend==0) {
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] no data sent (close connection)",sock);
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return -1;
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}
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if (nsend<0) {
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if (
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#ifdef PSOCK_EINTR
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psock_errno()==PSOCK_EINTR ||
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#endif
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#ifdef PSOCK_EAGAIN
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psock_errno()==PSOCK_EAGAIN ||
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#endif
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#ifdef PSOCK_EWOULDBLOCK
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psock_errno()==PSOCK_EWOULDBLOCK ||
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#endif
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#ifdef PSOCK_NOBUFS
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psock_errno()==PSOCK_ENOBUFS ||
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#endif
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#ifdef PSOCK_ENOMEM
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psock_errno()==ENOMEM ||
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#endif
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0)
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return 0;
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] error sent data (closing connection) (psock_send: %s)",sock,pstrerror(psock_errno()));
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return -1;
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}
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*currsize -= nsend;
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return 1;
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}
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extern int net_recv_data(int sock, char * buff, int buffsize, int * pos, int * currsize)
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{
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int nrecv;
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ASSERT(buff,-1);
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ASSERT(pos,-1);
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if (*pos>buffsize) {
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] recv buffer overflow pos=%d buffsize=%d",sock,*pos,buffsize);
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return -1;
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}
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if (*currsize>*pos) {
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] recv buffer error currsize=%d pos=%d",sock,*currsize,*pos);
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return -1;
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}
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if (*pos==buffsize) {
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memmove(buff,buff+*pos,*currsize);
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*pos=0;
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}
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nrecv=psock_recv(sock,buff+*pos,buffsize-*pos,0);
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if (nrecv==0) {
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] remote host closed connection",sock);
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return -1;
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}
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if (nrecv<0) {
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if (
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#ifdef PSOCK_EINTR
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psock_errno()==PSOCK_EINTR ||
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#endif
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#ifdef PSOCK_EAGAIN
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psock_errno()==PSOCK_EAGAIN ||
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#endif
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#ifdef PSOCK_EWOULDBLOCK
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psock_errno()==PSOCK_EWOULDBLOCK ||
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#endif
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#ifdef PSOCK_ENOMEM
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psock_errno()==ENOMEM ||
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#endif
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0)
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return 0;
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if (
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#ifdef PSOCK_ENOTCONN
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psock_errno()==PSOCK_ENOTCONN ||
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#endif
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#ifdef PSOCK_ECONNRESET
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psock_errno()==PSOCK_ECONNRESET ||
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#endif
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0) {
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] remote host closed connection (psock_recv: %s)",sock,pstrerror(psock_errno()));
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return -1;
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}
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] recv error (closing connection) (psock_recv: %s)",sock,pstrerror(psock_errno()));
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return -1;
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}
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* currsize += nrecv;
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return 1;
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}
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