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/****************************************************************
* *
* 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 "gtm_socket.h"
#include "gtm_netdb.h"
#include "gtm_ipv6.h"
#include "gtm_stdlib.h"
#include "gtm_string.h"
#include "gtm_inet.h"
#include "gtm_ctype.h"
#include <errno.h>
#include "cmidef.h"
#include "eintr_wrappers.h"
#define IPV6_SEPARATOR ']'
#define IPV6_START '['
error_def(CMI_BADIPADDRPORT);
error_def(CMI_NOSERVENT);
error_def(ERR_TEXT);
error_def(CMI_NETFAIL);
/* writes into outport the TCP port cooresponding to tnd in NBO */
cmi_status_t cmj_getsockaddr(cmi_descriptor *nod, cmi_descriptor *tnd, struct addrinfo **ai_ptr_ptr)
{
struct servent *s;
char *tnd_str, *cp, *addr_str_ptr;
char addr_end;
char port_str[MAX_HOST_NAME_LEN], *port_str_ptr;
char hn[MAX_HOST_NAME_LEN];
int loop_limit = MAX_GETHOST_TRIES;
int tnd_len, iplen, port_len;
struct addrinfo hints, *ai_ptr = NULL;
struct protoent *pe_ptr;
int errcode;
int port;
/*
* address/port number determination:
*
* tnd := IP address:port for IPv4
* tnd := [IP address]:port for IPv6
*
* If tnd is an empty string, get port number from services database
*
*/
tnd_str = CMI_DESC_POINTER(tnd);
tnd_len = CMI_DESC_LENGTH(tnd);
if (tnd && (0 < tnd->len))
{
/* look for symbol separted ip address and port in ipv6 */
if (IPV6_START == tnd_str[0])
{
if (NULL != (port_str_ptr = memchr(tnd_str, IPV6_SEPARATOR, tnd_len)))
{
if (0 == (iplen = (int)(port_str_ptr - &tnd_str[1])))
return CMI_BADIPADDRPORT;
if (iplen == tnd_len)
return CMI_BADIPADDRPORT;
} else
return CMI_BADIPADDRPORT;
addr_str_ptr = &tnd_str[1]; /* skip the '[' */
iplen = port_str_ptr - addr_str_ptr;
port_str_ptr += 1; /* skip the ']' */
if (*port_str_ptr != ':')
return CMI_BADIPADDRPORT;
port_str_ptr += 1;
} else
{
/* look for : */
addr_str_ptr = port_str_ptr = tnd_str;
for (iplen = 0, cp = tnd_str; cp < tnd_str + tnd_len; cp++)
{
if (*cp != ':' && *cp != '.' && !ISDIGIT_ASCII(*cp))
return CMI_BADIPADDRPORT;
if (*cp == ':')
{
if (0 == iplen)
{
if (0 == (iplen = (int)(cp - tnd_str)))
return CMI_BADIPADDRPORT;
port_str_ptr = (cp + 1);
} else
return CMI_BADIPADDRPORT;
}
}
}
port_len = (tnd_str + tnd_len) - port_str_ptr;
if (0 >= port_len)
return CMI_BADIPADDRPORT;
memcpy(port_str, port_str_ptr, port_len);
port_str[port_len] = '\0';
if (0 != iplen)
{ /* specified host name and port */
addr_end = *(addr_str_ptr + iplen); /* the end can be ] or : */
*(addr_str_ptr + iplen) = '\0';
/* obtain ipv4/6 address for host tnd_str */
CLIENT_HINTS(hints);
if (0 != (errcode = getaddrinfo(addr_str_ptr, port_str, &hints, &ai_ptr)))
{
*(addr_str_ptr + iplen) = addr_end;
return CMI_BADIPADDRPORT;
}
*(addr_str_ptr + iplen) = addr_end;
} else
{ /* only port is specified */
if (NULL != nod)
{
assert(CMI_DESC_LENGTH(nod) < (SIZEOF(hn)-1));
memcpy(hn, CMI_DESC_POINTER(nod), CMI_DESC_LENGTH(nod));
hn[CMI_DESC_LENGTH(nod)] = '\0';
CLIENT_HINTS(hints);
while ((EAI_AGAIN == (errcode = getaddrinfo(hn, port_str, &hints, &ai_ptr))) && (0 < loop_limit))
{
loop_limit--;
}
if (0 != errcode)
return CMI_NETFAIL;
*ai_ptr_ptr = ai_ptr;
return SS_NORMAL;
}
SERVER_HINTS(hints, (ipv4_only ? AF_INET : AF_UNSPEC));
if (0 != (errcode = getaddrinfo(NULL, port_str, &hints, &ai_ptr)))
{
return CMI_BADIPADDRPORT;
}
iplen = -1;
}
errno = 0;
port = ATOI(port_str);
if ((0 == port) && (0 != errno) || (0 >= port))
return CMI_BADIPADDRPORT;
} else
{ /* neither host nor port is specified */
/* use the services db */
SERVER_HINTS(hints, (ipv4_only ? AF_INET : AF_UNSPEC));
if (0 != (errcode = getaddrinfo(NULL, GTCM_SERVER_NAME, &hints, &ai_ptr)))
{
return CMI_NOSERVENT;
}
}
*ai_ptr_ptr = ai_ptr;
return SS_NORMAL;
}
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