Virgin import of ntpd 4.2.6p5.

When the series of commits is complete, things like
https://cert.litnet.lt/en/docs/ntp-distributed-reflection-dos-attacks
should be fixed.

PR:		bin/148836 (except that we import a newer version)
Asked by:	Too many
MFC after:	2 weeks

1 files changed, 0 insertions, 311 deletions

diff --git a/libisc/net.c b/libisc/net.c
deleted file mode 100644
index 3d4ab66..0000000
--- a/libisc/net.c
+++ /dev/null
@@ -1,311 +0,0 @@
-/*
- * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
- * Copyright (C) 1999-2003  Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
- * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
- * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
-/* $Id: net.c,v 1.22.2.2.10.7 2004/04/29 01:31:22 marka Exp $ */
-
-#include <config.h>
-
-#include <errno.h>
-#include <unistd.h>
-
-#include <isc/net.h>
-#include <isc/once.h>
-#include <isc/strerror.h>
-#include <isc/string.h>
-#include <isc/util.h>
-
-#if defined(ISC_PLATFORM_HAVEIPV6) && defined(ISC_PLATFORM_NEEDIN6ADDRANY)
-const struct in6_addr isc_net_in6addrany = IN6ADDR_ANY_INIT;
-#endif
-
-#if defined(ISC_PLATFORM_HAVEIPV6) && defined(ISC_PLATFORM_NEEDIN6ADDRLOOPBACK)
-const struct in6_addr isc_net_in6addrloop = IN6ADDR_LOOPBACK_INIT;
-#endif
-
-static isc_boolean_t 	once = ISC_FALSE;
-static isc_once_t 	once_ipv6only = ISC_ONCE_INIT;
-static isc_once_t 	once_ipv6pktinfo = ISC_ONCE_INIT;
-static isc_result_t	ipv4_result = ISC_R_NOTFOUND;
-static isc_result_t	ipv6_result = ISC_R_NOTFOUND;
-static isc_result_t	ipv6only_result = ISC_R_NOTFOUND;
-static isc_result_t	ipv6pktinfo_result = ISC_R_NOTFOUND;
-
-static isc_result_t
-try_proto(int domain) {
-	int s;
-	isc_result_t result = ISC_R_SUCCESS;
-	char strbuf[ISC_STRERRORSIZE];
-
-	s = socket(domain, SOCK_STREAM, 0);
-	if (s == -1) {
-		switch (errno) {
-#ifdef EAFNOSUPPORT
-		case EAFNOSUPPORT:
-#endif
-#ifdef EPROTONOSUPPORT
-		case EPROTONOSUPPORT:
-#endif
-#ifdef EINVAL
-		case EINVAL:
-#endif
-			return (ISC_R_NOTFOUND);
-		default:
-			isc__strerror(errno, strbuf, sizeof(strbuf));
-			UNEXPECTED_ERROR(__FILE__, __LINE__,
-					 "socket() failed: %s",
-					 strbuf);
-			return (ISC_R_UNEXPECTED);
-		}
-	}
-
-#ifdef ISC_PLATFORM_HAVEIPV6
-#ifdef WANT_IPV6
-#ifdef ISC_PLATFORM_HAVEIN6PKTINFO
-	if (domain == PF_INET6) {
-		struct sockaddr_in6 sin6;
-		GETSOCKNAME_SOCKLEN_TYPE len;
-
-		/*
-		 * Check to see if IPv6 is broken, as is common on Linux.
-		 */
-		len = sizeof(sin6);
-		if (getsockname(s, (struct sockaddr *)&sin6, &len) < 0)
-		{
-			result = ISC_R_NOTFOUND;
-		} else {
-			if (len == sizeof(struct sockaddr_in6))
-				result = ISC_R_SUCCESS;
-			else {
-				result = ISC_R_NOTFOUND;
-			}
-		}
-	}
-#endif
-#endif
-#endif
-
-	(void)close(s);
-
-	return (result);
-}
-
-static void
-initialize_action(void) {
-	ipv4_result = try_proto(PF_INET);
-#ifdef ISC_PLATFORM_HAVEIPV6
-#ifdef WANT_IPV6
-#ifdef ISC_PLATFORM_HAVEIN6PKTINFO
-	ipv6_result = try_proto(PF_INET6);
-#endif
-#endif
-#endif
-}
-
-static void
-initialize(void) {
-	if(once == ISC_FALSE) {
-		initialize_action();
-		once = ISC_TRUE;
-	}
-}
-
-isc_result_t
-isc_net_probeipv4(void) {
-	initialize();
-	return (ipv4_result);
-}
-
-isc_result_t
-isc_net_probeipv6(void) {
-	initialize();
-	return (ipv6_result);
-}
-
-#ifdef ISC_PLATFORM_HAVEIPV6
-#ifdef WANT_IPV6
-static void
-try_ipv6only(void) {
-#ifdef IPV6_V6ONLY
-	int s, on;
-	char strbuf[ISC_STRERRORSIZE];
-#endif
-	isc_result_t result;
-
-	result = isc_net_probeipv6();
-	if (result != ISC_R_SUCCESS) {
-		ipv6only_result = result;
-		return;
-	}
-
-#ifndef IPV6_V6ONLY
-	ipv6only_result = ISC_R_NOTFOUND;
-	return;
-#else
-	/* check for TCP sockets */
-	s = socket(PF_INET6, SOCK_STREAM, 0);
-	if (s == -1) {
-		isc__strerror(errno, strbuf, sizeof(strbuf));
-		UNEXPECTED_ERROR(__FILE__, __LINE__,
-				 "socket() failed: %s",
-				 strbuf);
-		ipv6only_result = ISC_R_UNEXPECTED;
-		return;
-	}
-
-	on = 1;
-	if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on)) < 0) {
-		ipv6only_result = ISC_R_NOTFOUND;
-		goto close;
-	}
-
-	close(s);
-
-	/* check for UDP sockets */
-	s = socket(PF_INET6, SOCK_DGRAM, 0);
-	if (s == -1) {
-		isc__strerror(errno, strbuf, sizeof(strbuf));
-		UNEXPECTED_ERROR(__FILE__, __LINE__,
-				 "socket() failed: %s",
-				 strbuf);
-		ipv6only_result = ISC_R_UNEXPECTED;
-		return;
-	}
-
-	on = 1;
-	if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on)) < 0) {
-		ipv6only_result = ISC_R_NOTFOUND;
-		goto close;
-	}
-
-	close(s);
-
-	ipv6only_result = ISC_R_SUCCESS;
-
-close:
-	close(s);
-	return;
-#endif /* IPV6_V6ONLY */
-}
-
-static void
-initialize_ipv6only(void) {
-	RUNTIME_CHECK(isc_once_do(&once_ipv6only,
-				  try_ipv6only) == ISC_R_SUCCESS);
-}
-
-static void
-try_ipv6pktinfo(void) {
-	int s, on;
-	char strbuf[ISC_STRERRORSIZE];
-	isc_result_t result;
-	int optname;
-
-	result = isc_net_probeipv6();
-	if (result != ISC_R_SUCCESS) {
-		ipv6pktinfo_result = result;
-		return;
-	}
-
-	/* we only use this for UDP sockets */
-	s = socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP);
-	if (s == -1) {
-		isc__strerror(errno, strbuf, sizeof(strbuf));
-		UNEXPECTED_ERROR(__FILE__, __LINE__,
-				 "socket() failed: %s",
-				 strbuf);
-		ipv6pktinfo_result = ISC_R_UNEXPECTED;
-		return;
-	}
-
-#ifdef IPV6_RECVPKTINFO
-	optname = IPV6_RECVPKTINFO;
-#else
-	optname = IPV6_PKTINFO;
-#endif
-	on = 1;
-	if (setsockopt(s, IPPROTO_IPV6, optname, &on, sizeof(on)) < 0) {
-		ipv6pktinfo_result = ISC_R_NOTFOUND;
-		goto close;
-	}
-
-	close(s);
-	ipv6pktinfo_result = ISC_R_SUCCESS;
-
-close:
-	close(s);
-	return;
-}
-
-static void
-initialize_ipv6pktinfo(void) {
-	RUNTIME_CHECK(isc_once_do(&once_ipv6pktinfo,
-				  try_ipv6pktinfo) == ISC_R_SUCCESS);
-}
-#endif /* WANT_IPV6 */
-#endif /* ISC_PLATFORM_HAVEIPV6 */
-
-isc_result_t
-isc_net_probe_ipv6only(void) {
-#ifdef ISC_PLATFORM_HAVEIPV6
-#ifdef WANT_IPV6
-	initialize_ipv6only();
-#else
-	ipv6only_result = ISC_R_NOTFOUND;
-#endif
-#endif
-	return (ipv6only_result);
-}
-
-isc_result_t
-isc_net_probe_ipv6pktinfo(void) {
-#ifdef ISC_PLATFORM_HAVEIPV6
-#ifdef WANT_IPV6
-	initialize_ipv6pktinfo();
-#else
-	ipv6pktinfo_result = ISC_R_NOTFOUND;
-#endif
-#endif
-	return (ipv6pktinfo_result);
-}
-
-void
-isc_net_disableipv4(void) {
-	initialize();
-	if (ipv4_result == ISC_R_SUCCESS)
-		ipv4_result = ISC_R_DISABLED;
-}
-
-void
-isc_net_disableipv6(void) {
-	initialize();
-	if (ipv6_result == ISC_R_SUCCESS)
-		ipv6_result = ISC_R_DISABLED;
-}
-
-void
-isc_net_enableipv4(void) {
-	initialize();
-	if (ipv4_result == ISC_R_DISABLED)
-		ipv4_result = ISC_R_SUCCESS;
-}
-
-void
-isc_net_enableipv6(void) {
-	initialize();
-	if (ipv6_result == ISC_R_DISABLED)
-		ipv6_result = ISC_R_SUCCESS;
-}