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📁 ..
📄 Makefile.am(3.27 KB)
📄 Makefile.in(105.83 KB)
📄 README(272 B)
📄 a_md5encrypt.c(6.76 KB)
📄 adjtime.c(10.29 KB)
📄 adjtimex.c(334 B)
📄 atoint.c(801 B)
📄 atolfp.c(1.88 KB)
📄 atouint.c(885 B)
📄 audio.c(13.09 KB)
📄 authkeys.c(19.92 KB)
📄 authreadkeys.c(9.06 KB)
📄 authusekey.c(748 B)
📄 bsd_strerror.c(1.35 KB)
📄 buftvtots.c(643 B)
📄 caljulian.c(891 B)
📄 caltontp.c(2.25 KB)
📄 calyearstart.c(2.1 KB)
📄 clocktime.c(4.49 KB)
📄 clocktypes.c(3.69 KB)
📄 decodenetnum.c(3.93 KB)
📄 dofptoa.c(2.19 KB)
📄 dolfptoa.c(3.14 KB)
📄 emalloc.c(3.4 KB)
📄 findconfig.c(1.46 KB)
📄 getopt.c(2.21 KB)
📄 hextoint.c(673 B)
📄 hextolfp.c(1.35 KB)
📄 humandate.c(1.1 KB)
📄 icom.c(4.22 KB)
📄 iosignal.c(12.27 KB)
📄 is_ip_address.c(2.02 KB)
📄 lib_strbuf.c(633 B)
📄 libssl_compat.c(6.13 KB)
📄 machines.c(13.05 KB)
📄 mktime.c(8.29 KB)
📄 modetoa.c(507 B)
📄 mstolfp.c(2.01 KB)
📄 msyslog.c(12.67 KB)
📄 netof.c(1.17 KB)
📄 ntp_calendar.c(58.49 KB)
📄 ntp_calgps.c(15.73 KB)
📄 ntp_crypto_rnd.c(2.11 KB)
📄 ntp_intres.c(28.64 KB)
📄 ntp_libopts.c(1.27 KB)
📄 ntp_lineedit.c(3.88 KB)
📄 ntp_random.c(17.63 KB)
📄 ntp_rfc2553.c(14.85 KB)
📄 ntp_worker.c(7.21 KB)
📄 numtoa.c(963 B)
📄 numtohost.c(908 B)
📄 octtoint.c(578 B)
📄 prettydate.c(5.53 KB)
📄 recvbuff.c(7.3 KB)
📄 refidsmear.c(1.05 KB)
📄 refnumtoa.c(673 B)
📄 snprintf.c(52.56 KB)
📄 socket.c(4.88 KB)
📄 socktoa.c(2.88 KB)
📄 socktohost.c(2.54 KB)
📄 ssl_init.c(5.09 KB)
📄 statestr.c(11.4 KB)
📄 strdup.c(854 B)
📄 strl_obsd.c(3.65 KB)
📄 syssignal.c(2.69 KB)
📄 systime.c(17.51 KB)
📄 systime_s.c(33 B)
📄 timespecops.c(4.27 KB)
📄 timetoa.c(2.75 KB)
📄 timevalops.c(12.97 KB)
📄 timexsup.c(1.17 KB)
📄 uglydate.c(958 B)
📄 vint64ops.c(5.1 KB)
📄 work_fork.c(12.73 KB)
📄 work_thread.c(22.88 KB)
📄 xsbprintf.c(2.06 KB)
📄 ymd2yd.c(582 B)

Editing: socktohost.c

/*
 * socktoa - return a numeric host name from a sockaddr_storage structure
 */
#include <config.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif

#include <arpa/inet.h>

#include <stdio.h>

#include "ntp_fp.h"
#include "lib_strbuf.h"
#include "ntp_stdlib.h"
#include "ntp.h"
#include "ntp_debug.h"

const char *
socktohost(
	const sockaddr_u *sock
	)
{
	const char		svc[] = "ntp";
	char *			pbuf;
	char *			pliar;
	int			gni_flags;
	struct addrinfo		hints;
	struct addrinfo *	alist;
	struct addrinfo *	ai;
	sockaddr_u		addr;
	size_t			octets;
	int			a_info;
	int			saved_errno;

saved_errno = socket_errno();

/* reverse the address to purported DNS name */
	LIB_GETBUF(pbuf);
	gni_flags = NI_DGRAM | NI_NAMEREQD;
	if (getnameinfo(&sock->sa, SOCKLEN(sock), pbuf, LIB_BUFLENGTH,
			NULL, 0, gni_flags)) {
		errno = saved_errno;
		return stoa(sock);	/* use address */
	}

TRACE(1, ("%s reversed to %s\n", stoa(sock), pbuf));

/*
	 * Resolve the reversed name and make sure the reversed address
	 * is among the results.
	 */
	ZERO(hints);
	hints.ai_family = AF(sock);
	hints.ai_protocol = IPPROTO_UDP;
	hints.ai_socktype = SOCK_DGRAM;
	hints.ai_flags = 0;
	alist = NULL;

a_info = getaddrinfo(pbuf, svc, &hints, &alist);
	if (a_info == EAI_NONAME
#ifdef EAI_NODATA
	    || a_info == EAI_NODATA
#endif
	   ) {
		hints.ai_flags = AI_CANONNAME;
#ifdef AI_ADDRCONFIG
		hints.ai_flags |= AI_ADDRCONFIG;
#endif
		a_info = getaddrinfo(pbuf, svc, &hints, &alist);	
	}
#ifdef AI_ADDRCONFIG
	/* Some older implementations don't like AI_ADDRCONFIG. */
	if (a_info == EAI_BADFLAGS) {
		hints.ai_flags &= ~AI_ADDRCONFIG;
		a_info = getaddrinfo(pbuf, svc, &hints, &alist);	
	}
#endif
	if (a_info)
		goto forward_fail;

INSIST(alist != NULL);

for (ai = alist; ai != NULL; ai = ai->ai_next) {
		/*
		 * Make a convenience sockaddr_u copy from ai->ai_addr
		 * because casting from sockaddr * to sockaddr_u * is
		 * risking alignment problems on platforms where
		 * sockaddr_u has stricter alignment than sockaddr,
		 * such as sparc.
		 */
		ZERO_SOCK(&addr);
		octets = min(sizeof(addr), ai->ai_addrlen);
		memcpy(&addr, ai->ai_addr, octets);
		if (SOCK_EQ(sock, &addr))
			break;
	}
	freeaddrinfo(alist);

if (ai != NULL) {
		errno = saved_errno;
		return pbuf;	/* forward check passed */
	}

forward_fail:
	TRACE(1, ("%s forward check lookup fail: %s\n", pbuf,
		  gai_strerror(a_info)));
	LIB_GETBUF(pliar);
	snprintf(pliar, LIB_BUFLENGTH, "%s (%s)", stoa(sock), pbuf);

errno = saved_errno;
	return pliar;
}

003 File Manager

Editing: socktohost.c

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