139 lines
3.7 KiB
C
139 lines
3.7 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2010 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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/* get socket routines address */
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#include "mdef.h"
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#include "gtm_netdb.h"
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#include "gtm_unistd.h"
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#include <errno.h>
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#include "gtm_socket.h"
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#include "gtm_inet.h"
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#include "gtm_string.h" /* for FD_ZERO */
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#include "io.h"
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#include "iotcp_select.h"
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#include "iotcproutine.h"
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GBLDEF tcp_library_struct tcp_routines;
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int gtm_accept(int socket, struct sockaddr *address, sssize_t *address_len);
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int gtm_recv(int socket, void *buffer, size_t length, int flags);
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int gtm_send(int socket, void *buffer, size_t length, int flags);
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/*
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* Note - the checks for EINTR in these functions are valid and need to stay in,
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* because the functions are being assigned to members of the tcp_routines table,
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* and thus cannot be replaced by EINTR wrapper macros.
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*/
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int gtm_accept(int socket, struct sockaddr *address, sssize_t *address_len)
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{
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int res;
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do
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{
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res = accept(socket, address, (GTM_SOCKLEN_TYPE *)address_len);
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} while (-1 == res && EINTR == errno);
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return(res);
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}
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int gtm_connect(int socket, struct sockaddr *address, size_t address_len)
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{
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int res, sockerror;
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GTM_SOCKLEN_TYPE sockerrorlen;
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fd_set writefds;
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res = connect(socket, address, (GTM_SOCKLEN_TYPE)address_len);
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if ((-1 == res) && ((EINTR == errno) || (EINPROGRESS == errno)
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#if (defined(__osf__) && defined(__alpha)) || defined(__sun) || defined(__vms)
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|| (EWOULDBLOCK == errno)
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#endif
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))
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{/* connection attempt will continue so wait for completion */
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do
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{ /* a plain connect will usually timeout after 75 seconds with ETIMEDOUT */
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FD_ZERO(&writefds);
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FD_SET(socket, &writefds);
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res = select(socket + 1, NULL, &writefds, NULL, NULL);
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if (-1 == res && EINTR == errno)
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continue;
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if (0 < res)
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{ /* check for socket error */
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sockerrorlen = SIZEOF(sockerror);
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res = getsockopt(socket, SOL_SOCKET, SO_ERROR, &sockerror, &sockerrorlen);
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if (0 == res && 0 != sockerror)
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{ /* return socket error */
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res = -1;
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errno = sockerror;
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}
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}
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break;
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} while (TRUE);
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} else if (-1 == res && EISCONN == errno)
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res = 0; /* socket is already connected */
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return(res);
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}
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int gtm_recv(int socket, void *buffer, size_t length, int flags)
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{
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int res;
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do
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{
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res = (int)(recv(socket, buffer, (int)(length), flags));
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} while (-1 == res && EINTR == errno);
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return(res);
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}
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int gtm_send(int socket, void *buffer, size_t length, int flags)
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{
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int res;
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do
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{
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res = (int)(send(socket, buffer, (int)(length), flags));
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} while (-1 == res && EINTR == errno);
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return(res);
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}
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int iotcp_fillroutine(void)
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{
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if (gtm_accept == tcp_routines.aa_accept)
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return 0; /* already done */
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tcp_routines.aa_accept = gtm_accept;
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tcp_routines.aa_bind = bind;
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tcp_routines.aa_close = close;
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tcp_routines.aa_connect = gtm_connect;
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tcp_routines.aa_getsockname = getsockname;
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tcp_routines.aa_getsockopt = getsockopt;
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#ifndef htons /* if htons is not a macro, assign the routine */
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tcp_routines.aa_htons = htons;
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#endif
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tcp_routines.aa_inet_addr = INET_ADDR;
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tcp_routines.aa_inet_ntoa = INET_NTOA;
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#ifndef ntohs
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tcp_routines.aa_ntohs = ntohs;
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#endif
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tcp_routines.aa_listen = listen;
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tcp_routines.aa_recv = (int (*)())gtm_recv;
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tcp_routines.aa_select = select;
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tcp_routines.aa_send = (int (*)())gtm_send;
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tcp_routines.aa_setsockopt = setsockopt;
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tcp_routines.aa_socket = socket;
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return 0;
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}
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