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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2006, 2012 Oracle and/or its affiliates. All rights reserved.
*
* $Id$
*/
#include "db_config.h"
#include "db_int.h"
/*
* __os_getaddrinfo and __os_freeaddrinfo wrap the getaddrinfo and freeaddrinfo
* calls, as well as the associated platform dependent error handling, mapping
* the error return to a ANSI C/POSIX error return.
*/
/*
* __os_getaddrinfo --
*
* PUBLIC: #if defined(HAVE_REPLICATION_THREADS)
* PUBLIC: int __os_getaddrinfo __P((ENV *, const char *, u_int,
* PUBLIC: const char *, const ADDRINFO *, ADDRINFO **));
* PUBLIC: #endif
*/
int
__os_getaddrinfo(env, nodename, port, servname, hints, res)
ENV *env;
const char *nodename, *servname;
u_int port;
const ADDRINFO *hints;
ADDRINFO **res;
{
#ifdef HAVE_GETADDRINFO
int ret;
if ((ret = getaddrinfo(nodename, servname, hints, res)) == 0)
return (0);
__db_errx(env, DB_STR_A("0153",
"%s(%u): host lookup failed: %s", "%s %u %s"),
nodename == NULL ? "" : nodename, port,
#ifdef DB_WIN32
gai_strerrorA(ret));
#else
gai_strerror(ret));
#endif
return (__os_posix_err(ret));
#else
ADDRINFO *answer;
struct hostent *hostaddr;
struct sockaddr_in sin;
u_int32_t tmpaddr;
int ret;
COMPQUIET(hints, NULL);
COMPQUIET(servname, NULL);
/* INADDR_NONE is not defined on Solaris 2.6, 2.7 or 2.8. */
#ifndef INADDR_NONE
#define INADDR_NONE ((u_long)0xffffffff)
#endif
/*
* Basic implementation of IPv4 component of getaddrinfo.
* Limited to the functionality used by repmgr.
*/
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
if (nodename) {
if (nodename[0] == '\0')
sin.sin_addr.s_addr = htonl(INADDR_ANY);
else if ((tmpaddr = inet_addr(CHAR_STAR_CAST nodename)) !=
INADDR_NONE) {
sin.sin_addr.s_addr = tmpaddr;
} else {
hostaddr = gethostbyname(nodename);
if (hostaddr == NULL) {
#ifdef DB_WIN32
ret = __os_get_neterr();
__db_syserr(env, ret, DB_STR_A("0154",
"%s(%u): host lookup failed", "%s %u"),
nodename == NULL ? "" : nodename, port);
return (__os_posix_err(ret));
#else
/*
* Historic UNIX systems used the h_errno
* global variable to return gethostbyname
* errors. The only function we currently
* use that needs h_errno is gethostbyname,
* so we deal with it here.
*
* hstrerror is not available on Solaris 2.6
* (it is in libresolv but is a private,
* unexported symbol).
*/
#ifdef HAVE_HSTRERROR
__db_errx(env, DB_STR_A("0155",
"%s(%u): host lookup failed: %s",
"%s %u %s"),
nodename == NULL ? "" : nodename, port,
hstrerror(h_errno));
#else
__db_errx(env, DB_STR_A("0156",
"%s(%u): host lookup failed: %d",
"%s %u %d"),
nodename == NULL ? "" : nodename, port,
h_errno);
#endif
switch (h_errno) {
case HOST_NOT_FOUND:
case NO_DATA:
return (EHOSTUNREACH);
case TRY_AGAIN:
return (EAGAIN);
case NO_RECOVERY:
default:
return (EFAULT);
}
/* NOTREACHED */
#endif
}
memcpy(&(sin.sin_addr),
hostaddr->h_addr, (size_t)hostaddr->h_length);
}
} else /* No host specified. */
sin.sin_addr.s_addr = htonl(INADDR_ANY);
sin.sin_port = htons((u_int16_t)port);
if ((ret = __os_calloc(env, 1, sizeof(ADDRINFO), &answer)) != 0)
return (ret);
if ((ret = __os_malloc(env, sizeof(sin), &answer->ai_addr)) != 0) {
__os_free(env, answer);
return (ret);
}
answer->ai_family = AF_INET;
answer->ai_protocol = IPPROTO_TCP;
answer->ai_socktype = SOCK_STREAM;
answer->ai_addrlen = sizeof(sin);
memcpy(answer->ai_addr, &sin, sizeof(sin));
*res = answer;
return (0);
#endif /* HAVE_GETADDRINFO */
}
/*
* __os_freeaddrinfo --
*
* PUBLIC: #if defined(HAVE_REPLICATION_THREADS)
* PUBLIC: void __os_freeaddrinfo __P((ENV *, ADDRINFO *));
* PUBLIC: #endif
*/
void
__os_freeaddrinfo(env, ai)
ENV *env;
ADDRINFO *ai;
{
#ifdef HAVE_GETADDRINFO
COMPQUIET(env, NULL);
freeaddrinfo(ai);
#else
ADDRINFO *next, *tmpaddr;
for (next = ai; next != NULL; next = tmpaddr) {
if (next->ai_canonname != NULL)
__os_free(env, next->ai_canonname);
if (next->ai_addr != NULL)
__os_free(env, next->ai_addr);
tmpaddr = next->ai_next;
__os_free(env, next);
}
#endif
}
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