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Tweak the existing special case for AIX in pg_getaddrinfo_all() to handle

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yet another failure case in AIX's getaddrinfo().  Per report and patch
by Andrew Chernow.
This commit is contained in:
Tom Lane 2009-01-23 19:58:06 +00:00
parent 4d65d2872b
commit 006b9e7a92
1 changed files with 18 additions and 8 deletions
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26
src/backend/libpq/ip.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/libpq/ip.c,v 1.43 2009/01/01 17:23:42 momjian Exp $
* $PostgreSQL: pgsql/src/backend/libpq/ip.c,v 1.44 2009/01/23 19:58:06 tgl Exp $
*
* This file and the IPV6 implementation were initially provided by
* Nigel Kukard <nkukard@lbsd.net>, Linux Based Systems Design
@ -74,36 +74,46 @@ pg_getaddrinfo_all(const char *hostname, const char *servname,
return getaddrinfo_unix(servname, hintp, result);
#endif
#ifndef _AIX
/* NULL has special meaning to getaddrinfo(). */
rc = getaddrinfo((!hostname || hostname[0] == '\0') ? NULL : hostname,
servname, hintp, result);
#ifdef _AIX
#else /* _AIX */
/*
* It seems some versions of AIX's getaddrinfo don't reliably zero
* sin_port when servname is NULL, so clean up after it.
* Various versions of AIX have various bugs in getaddrinfo()'s handling
* of the servname parameter, including failing entirely if it's not NULL
* and failing to zero sin_port when it is NULL :-(. Avoid these by
* always passing NULL and handling the port number for ourselves.
*/
if (servname == NULL && rc == 0)
rc = getaddrinfo((!hostname || hostname[0] == '\0') ? NULL : hostname,
NULL, hintp, result);
if (rc == 0)
{
struct addrinfo *addr;
unsigned short port = 0;
if (servname && *servname)
port = atoi(servname);
for (addr = *result; addr; addr = addr->ai_next)
{
switch (addr->ai_family)
{
case AF_INET:
((struct sockaddr_in *) addr->ai_addr)->sin_port = htons(0);
((struct sockaddr_in *) addr->ai_addr)->sin_port = htons(port);
break;
#ifdef HAVE_IPV6
case AF_INET6:
((struct sockaddr_in6 *) addr->ai_addr)->sin6_port = htons(0);
((struct sockaddr_in6 *) addr->ai_addr)->sin6_port = htons(port);
break;
#endif
}
}
}
#endif
#endif /* _AIX */
return rc;
}