fis-gtm/sr_unix_gnp/cmj_get_port.c

64 lines
1.6 KiB
C

/****************************************************************
* *
* Copyright 2001, 2013 Fidelity Information Services, Inc *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "cmidef.h"
#include "gtm_netdb.h"
#include "gtm_stdlib.h"
#include "gtm_string.h"
#include "gtm_inet.h"
error_def(CMI_BADPORT);
error_def(CMI_NOTND);
error_def(CMI_NETFAIL);
error_def(CMI_NOTTND);
/* writes into outport the TCP port cooresponding to tnd in NBO */
cmi_status_t cmj_get_port(cmi_descriptor *tnd, unsigned short *outport)
{
cmi_status_t status = SS_NORMAL;
char *envvar;
char *tndstring;
char *ep;
char num[MAX_HOST_NAME_LEN];
struct servent *s;
unsigned short myport;
/*
* port number determination:
*
* 1. Use string in tnd as an integer.
* 2. if the string is not an integer, use the
* services database to get the port number
*
*/
if (tnd)
{
/* try to interpret tnd as an integer */
memcpy(num, CMI_DESC_POINTER(tnd), CMI_DESC_LENGTH(tnd));
num[CMI_DESC_LENGTH(tnd)] = '\0';
myport = htons((unsigned short)STRTOUL(num, &ep, 10));
if (*ep != '\0')
{
/* use the services db */
s = getservbyname(num, GTCM_SERVER_PROTOCOL);
endservent();
if (!s)
return CMI_NETFAIL;
/* get port - netdb routine returns in NBO */
myport = s->s_port;
}
}
*outport = myport;
return status;
}