Virgin import of ntpd 4.2.0

1 files changed, 331 insertions, 0 deletions

diff --git a/contrib/ntp/libntp/ntp_rfc2553.c b/contrib/ntp/libntp/ntp_rfc2553.c
new file mode 100644
index 0000000..2788630
--- /dev/null
+++ b/contrib/ntp/libntp/ntp_rfc2553.c
@@ -0,0 +1,331 @@
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (c) 1982, 1986, 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+/*
+ * Compatability shims with the rfc2553 API to simplify ntp.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <ctype.h>
+#include <sys/socket.h>
+#include "ntp_rfc2553.h"
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#include <netdb.h>
+
+#include "ntpd.h"
+#include "ntp_malloc.h"
+#include "ntp_stdlib.h"
+#include "ntp_string.h"
+
+#ifndef HAVE_IPV6
+
+#if defined(SYS_WINNT)
+/* XXX This is the preferred way, but for some reason the SunOS compiler
+ * does not like it.
+ */
+const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
+#else
+const struct in6_addr in6addr_any;
+#endif
+
+static char *ai_errlist[] = {
+	"Success",
+	"Address family for hostname not supported",	/* EAI_ADDRFAMILY */
+	"Temporary failure in name resolution",		/* EAI_AGAIN      */
+	"Invalid value for ai_flags",		       	/* EAI_BADFLAGS   */
+	"Non-recoverable failure in name resolution", 	/* EAI_FAIL       */
+	"ai_family not supported",			/* EAI_FAMILY     */
+	"Memory allocation failure", 			/* EAI_MEMORY     */
+	"No address associated with hostname", 		/* EAI_NODATA     */
+	"hostname nor servname provided, or not known",	/* EAI_NONAME     */
+	"servname not supported for ai_socktype",	/* EAI_SERVICE    */
+	"ai_socktype not supported", 			/* EAI_SOCKTYPE   */
+	"System error returned in errno", 		/* EAI_SYSTEM     */
+	"Invalid value for hints",			/* EAI_BADHINTS	  */
+	"Resolved protocol is unknown",			/* EAI_PROTOCOL   */
+	"Unknown error", 				/* EAI_MAX        */
+};
+
+static	int ipv4_aton P((const char *, struct sockaddr_storage *));
+static	int do_nodename P((const char *nodename, struct addrinfo *ai,
+    const struct addrinfo *hints));
+
+int
+getaddrinfo (const char *nodename, const char *servname,
+	const struct addrinfo *hints, struct addrinfo **res)
+{
+	int rval;
+	struct addrinfo *ai;
+	struct sockaddr_in *sockin;
+
+	ai = calloc(sizeof(struct addrinfo), 1);
+	if (ai == NULL)
+		return (EAI_MEMORY);
+
+	if (nodename != NULL) {
+		rval = do_nodename(nodename, ai, hints);
+		if (rval != 0) {
+			freeaddrinfo(ai);
+			return (rval);
+		}
+	}
+	if (nodename == NULL && hints != NULL) {
+		ai->ai_addr = calloc(sizeof(struct sockaddr_storage), 1);
+		if (ai->ai_addr == NULL) {
+			freeaddrinfo(ai);
+			return (EAI_MEMORY);
+		}
+		ai->ai_family = AF_INET;
+		ai->ai_addrlen = sizeof(struct sockaddr_storage);
+		sockin = (struct sockaddr_in *)ai->ai_addr;
+		sockin->sin_family = AF_INET;
+		sockin->sin_addr.s_addr = htonl(INADDR_ANY);
+#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
+		ai->ai_addr->sa_len = SOCKLEN(ai->ai_addr);
+#endif
+	}
+	if (servname != NULL) {
+		ai->ai_family = AF_INET;
+		ai->ai_socktype = SOCK_DGRAM;
+		if (strcmp(servname, "ntp") != 0) {
+			freeaddrinfo(ai);
+			return (EAI_SERVICE);
+		}
+		sockin = (struct sockaddr_in *)ai->ai_addr;
+		sockin->sin_port = htons(NTP_PORT);
+	}
+	*res = ai;
+	return (0);
+}
+
+void
+freeaddrinfo(struct addrinfo *ai)
+{
+	if (ai->ai_canonname != NULL)
+		free(ai->ai_canonname);
+	if (ai->ai_addr != NULL)
+		free(ai->ai_addr);
+	free(ai);
+}
+
+int
+getnameinfo (const struct sockaddr *sa, u_int salen, char *host,
+	size_t hostlen, char *serv, size_t servlen, int flags)
+{
+	struct hostent *hp;
+
+	if (sa->sa_family != AF_INET)
+		return (EAI_FAMILY);
+	hp = gethostbyaddr(
+	    (const char *)&((const struct sockaddr_in *)sa)->sin_addr,
+	    4, AF_INET);
+	if (hp == NULL) {
+		if (h_errno == TRY_AGAIN)
+			return (EAI_AGAIN);
+		else
+			return (EAI_FAIL);
+	}
+	if (host != NULL) {
+		strncpy(host, hp->h_name, hostlen);
+		host[hostlen] = '\0';
+	}
+	return (0);
+}
+
+char *
+gai_strerror(int ecode)
+{
+	if (ecode < 0 || ecode > EAI_MAX)
+		ecode = EAI_MAX;
+	return ai_errlist[ecode];
+}
+
+static int
+do_nodename(
+	const char *nodename,
+	struct addrinfo *ai,
+	const struct addrinfo *hints)
+{
+	struct hostent *hp;
+	struct sockaddr_in *sockin;
+
+	ai->ai_addr = calloc(sizeof(struct sockaddr_storage), 1);
+	if (ai->ai_addr == NULL)
+		return (EAI_MEMORY);
+
+	if (hints != NULL && hints->ai_flags & AI_NUMERICHOST) {
+		if (ipv4_aton(nodename,
+		    (struct sockaddr_storage *)ai->ai_addr) == 1) {
+			ai->ai_family = AF_INET;
+			ai->ai_addrlen = sizeof(struct sockaddr_in);
+			return (0);
+		}
+		return (EAI_NONAME);
+	}
+	hp = gethostbyname(nodename);
+	if (hp == NULL) {
+		if (h_errno == TRY_AGAIN)
+			return (EAI_AGAIN);
+		else {
+			if (ipv4_aton(nodename,
+			    (struct sockaddr_storage *)ai->ai_addr) == 1) {
+				ai->ai_family = AF_INET;
+				ai->ai_addrlen = sizeof(struct sockaddr_in);
+				return (0);
+			}
+			return (EAI_FAIL);
+		}
+	}
+	ai->ai_family = hp->h_addrtype;
+	ai->ai_addrlen = sizeof(struct sockaddr);
+	sockin = (struct sockaddr_in *)ai->ai_addr;
+	memcpy(&sockin->sin_addr, hp->h_addr, hp->h_length);
+	ai->ai_addr->sa_family = hp->h_addrtype;
+#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
+	ai->ai_addr->sa_len = sizeof(struct sockaddr);
+#endif
+	if (hints != NULL && hints->ai_flags & AI_CANONNAME) {
+		ai->ai_canonname = malloc(strlen(hp->h_name) + 1);
+		if (ai->ai_canonname == NULL)
+			return (EAI_MEMORY);
+		strcpy(ai->ai_canonname, hp->h_name);
+	}
+	return (0);
+}
+
+/*
+ * ipv4_aton - return a net number (this is crude, but careful)
+ */
+static int
+ipv4_aton(
+	const char *num,
+	struct sockaddr_storage *saddr
+	)
+{
+	const char *cp;
+	char *bp;
+	int i;
+	int temp;
+	char buf[80];		/* will core dump on really stupid stuff */
+	u_int32 netnum;
+	struct sockaddr_in *addr;
+
+	cp = num;
+	netnum = 0;
+	for (i = 0; i < 4; i++) {
+		bp = buf;
+		while (isdigit((int)*cp))
+			*bp++ = *cp++;
+		if (bp == buf)
+			break;
+
+		if (i < 3) {
+			if (*cp++ != '.')
+				break;
+		} else if (*cp != '\0')
+			break;
+
+		*bp = '\0';
+		temp = atoi(buf);
+		if (temp > 255)
+			break;
+		netnum <<= 8;
+		netnum += temp;
+#ifdef DEBUG
+		if (debug > 3)
+			printf("ipv4_aton %s step %d buf %s temp %d netnum %lu\n",
+			   num, i, buf, temp, (u_long)netnum);
+#endif
+	}
+
+	if (i < 4) {
+#ifdef DEBUG
+		if (debug > 3)
+			printf(
+				"ipv4_aton: \"%s\" invalid host number, line ignored\n",
+				num);
+#endif
+		return (0);
+	}
+
+	/*
+	 * make up socket address.	Clear it out for neatness.
+	 */
+	memset((void *)saddr, 0, sizeof(struct sockaddr_storage));
+	addr = (struct sockaddr_in *)saddr;
+	addr->sin_family = AF_INET;
+	addr->sin_port = htons(NTP_PORT);
+	addr->sin_addr.s_addr = htonl(netnum);
+#ifdef DEBUG
+	if (debug > 1)
+		printf("ipv4_aton given %s, got %s.\n", num, ntoa(saddr));
+#endif
+	return (1);
+}
+#endif /* !HAVE_IPV6 */