SulinRepository/system/base/tcp-wrappers/files/tcp-wrappers-7.6-ipv6-1.14.diff

;; IPv6 patch for tcp_wrappers_7.6 1.14
;; Dec 29, 2001 by Hajimu UMEMOTO <ume@mahoroba.org>
;;
;; This patch supports IPv4/IPv6 dual stack and IPv4-mapped IPv6 address.
;; You can replace stock tcpd or libwrap.a with this.
;; IPv6 address pattern is as a `[net]/prefixlen' pair.
;; This patch was tested on KAME/FreeBSD, KAME/FreeBSD3, KAME/NetBSD,
;; RedHat 5.1 with kernel 2.1.126, and RedHat 6.0 with kernel 2.2.10.
;; Solaris 8 is now supported.  Thanks Alexander Gall <gall@switch.ch>
;; and Shigechika AIKAWA <shige@cin.nihon-u.ac.jp>.
;;
;; This version is using getaddrinfo()/getnameinfo() instead of
;; getipnode*() to support scoped address.  Use of
;; getaddrinfo()/getnameinfo() and scoped address support is only
;; tested on KAME.
;;
;; CAUTION:
;; Back out change for field separater.  Now, field separater is `:'
;; not `|'.  To specify IPv6 address, enclose IPv6 address with `['
;; and `]'.
;;
;; For Linux users:
;; If your libc doesn't have sockaddr_storage, try target `linux-old'.

Index: src/tcp_wrappers/Makefile
diff -u src/tcp_wrappers/Makefile:1.1.1.1 src/tcp_wrappers/Makefile:1.10
--- src/tcp_wrappers/Makefile:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/Makefile	Fri May  5 20:11:48 2000
@@ -454,7 +474,7 @@
 # host name aliases. Compile with -DSOLARIS_24_GETHOSTBYNAME_BUG to work
 # around this. The workaround does no harm on other Solaris versions.
 
-BUGS = -DGETPEERNAME_BUG -DBROKEN_FGETS -DLIBC_CALLS_STRTOK
+#BUGS = -DGETPEERNAME_BUG -DBROKEN_FGETS -DLIBC_CALLS_STRTOK
 #BUGS = -DGETPEERNAME_BUG -DBROKEN_FGETS -DINET_ADDR_BUG
 #BUGS = -DGETPEERNAME_BUG -DBROKEN_FGETS -DSOLARIS_24_GETHOSTBYNAME_BUG
 
Index: src/tcp_wrappers/fix_options.c
diff -u src/tcp_wrappers/fix_options.c:1.1.1.1 src/tcp_wrappers/fix_options.c:1.4
--- src/tcp_wrappers/fix_options.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/fix_options.c	Tue Sep 28 04:13:19 1999
@@ -11,6 +11,9 @@
 
 #include <sys/types.h>
 #include <sys/param.h>
+#ifdef INET6
+#include <sys/socket.h>
+#endif
 #include <netinet/in.h>
 #include <netinet/in_systm.h>
 #include <netinet/ip.h>
@@ -41,6 +44,22 @@
     unsigned int opt;
     int     optlen;
     struct in_addr dummy;
+#ifdef INET6
+    struct sockaddr_storage ss;
+    int sslen;
+
+    /*
+     * check if this is AF_INET socket
+     * XXX IPv6 support?
+     */
+    sslen = sizeof(ss);
+    if (getsockname(fd, (struct sockaddr *)&ss, &sslen) < 0) {
+	syslog(LOG_ERR, "getpeername: %m");
+	clean_exit(request);
+    }
+    if (ss.ss_family != AF_INET)
+	return;
+#endif
 
     if ((ip = getprotobyname("ip")) != 0)
 	ipproto = ip->p_proto;
Index: src/tcp_wrappers/inetcf.c
diff -u src/tcp_wrappers/inetcf.c:1.1.1.1 src/tcp_wrappers/inetcf.c:1.2
--- src/tcp_wrappers/inetcf.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/inetcf.c	Tue May  4 21:58:36 1999
@@ -26,6 +26,9 @@
   * guesses. Shorter names follow longer ones.
   */
 char   *inet_files[] = {
+#ifdef INET6
+    "/usr/local/v6/etc/inet6d.conf",	/* KAME */
+#endif
     "/private/etc/inetd.conf",		/* NEXT */
     "/etc/inet/inetd.conf",		/* SYSV4 */
     "/usr/etc/inetd.conf",		/* IRIX?? */
Index: src/tcp_wrappers/misc.c
diff -u src/tcp_wrappers/misc.c:1.1.1.1 src/tcp_wrappers/misc.c:1.4
--- src/tcp_wrappers/misc.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/misc.c	Mon Aug 23 01:32:43 1999
@@ -58,9 +58,31 @@
 {
     char   *cp;
 
+#ifdef INET6
+    int bracket = 0;
+
+    for (cp = string; cp && *cp; cp++) {
+	switch (*cp) {
+	case '[':
+	    bracket++;
+	    break;
+	case ']':
+	    bracket--;
+	    break;
+	default:
+	    if (bracket == 0 && *cp == delimiter) {
+		*cp++ = 0;
+		return cp;
+	    }
+	    break;
+	}
+    }
+    return (NULL);
+#else
     if ((cp = strchr(string, delimiter)) != 0)
 	*cp++ = 0;
     return (cp);
+#endif
 }
 
 /* dot_quad_addr - convert dotted quad to internal form */
Index: src/tcp_wrappers/refuse.c
diff -u src/tcp_wrappers/refuse.c:1.1.1.1 src/tcp_wrappers/refuse.c:1.2
--- src/tcp_wrappers/refuse.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/refuse.c	Tue May  4 21:58:36 1999
@@ -25,7 +25,12 @@
 void    refuse(request)
 struct request_info *request;
 {
+#ifdef INET6
+    syslog(deny_severity, "refused connect from %s (%s)",
+	   eval_client(request), eval_hostaddr(request->client));
+#else
     syslog(deny_severity, "refused connect from %s", eval_client(request));
+#endif
     clean_exit(request);
     /* NOTREACHED */
 }
Index: src/tcp_wrappers/rfc931.c
diff -u src/tcp_wrappers/rfc931.c:1.1.1.1 src/tcp_wrappers/rfc931.c:1.7
--- src/tcp_wrappers/rfc931.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/rfc931.c	Mon Aug 23 01:32:43 1999
@@ -68,20 +68,50 @@
 /* rfc931 - return remote user name, given socket structures */
 
 void    rfc931(rmt_sin, our_sin, dest)
+#ifdef INET6
+struct sockaddr *rmt_sin;
+struct sockaddr *our_sin;
+#else
 struct sockaddr_in *rmt_sin;
 struct sockaddr_in *our_sin;
+#endif
 char   *dest;
 {
     unsigned rmt_port;
     unsigned our_port;
+#ifdef INET6
+    struct sockaddr_storage rmt_query_sin;
+    struct sockaddr_storage our_query_sin;
+    int alen;
+#else
     struct sockaddr_in rmt_query_sin;
     struct sockaddr_in our_query_sin;
+#endif
     char    user[256];			/* XXX */
     char    buffer[512];		/* XXX */
     char   *cp;
     char   *result = unknown;
     FILE   *fp;
 
+#ifdef INET6
+    /* address family must be the same */
+    if (rmt_sin->sa_family != our_sin->sa_family) {
+	STRN_CPY(dest, result, STRING_LENGTH);
+	return;
+    }
+    switch (our_sin->sa_family) {
+    case AF_INET:
+	alen = sizeof(struct sockaddr_in);
+	break;
+    case AF_INET6:
+	alen = sizeof(struct sockaddr_in6);
+	break;
+    default:
+	STRN_CPY(dest, result, STRING_LENGTH);
+	return;
+    }
+#endif
+
     /*
      * Use one unbuffered stdio stream for writing to and for reading from
      * the RFC931 etc. server. This is done because of a bug in the SunOS
@@ -92,7 +122,11 @@
      * sockets.
      */
 
+#ifdef INET6
+    if ((fp = fsocket(our_sin->sa_family, SOCK_STREAM, 0)) != 0) {
+#else
     if ((fp = fsocket(AF_INET, SOCK_STREAM, 0)) != 0) {
+#endif
 	setbuf(fp, (char *) 0);
 
 	/*
@@ -112,6 +146,25 @@
 	     * addresses from the query socket.
 	     */
 
+#ifdef INET6
+	    memcpy(&our_query_sin, our_sin, alen);
+	    memcpy(&rmt_query_sin, rmt_sin, alen);
+	    switch (our_sin->sa_family) {
+	    case AF_INET:
+		((struct sockaddr_in *)&our_query_sin)->sin_port = htons(ANY_PORT);
+		((struct sockaddr_in *)&rmt_query_sin)->sin_port = htons(RFC931_PORT);
+		break;
+	    case AF_INET6:
+		((struct sockaddr_in6 *)&our_query_sin)->sin6_port = htons(ANY_PORT);
+		((struct sockaddr_in6 *)&rmt_query_sin)->sin6_port = htons(RFC931_PORT);
+		break;
+	    }
+
+	    if (bind(fileno(fp), (struct sockaddr *) & our_query_sin,
+		     alen) >= 0 &&
+		connect(fileno(fp), (struct sockaddr *) & rmt_query_sin,
+			alen) >= 0) {
+#else
 	    our_query_sin = *our_sin;
 	    our_query_sin.sin_port = htons(ANY_PORT);
 	    rmt_query_sin = *rmt_sin;
@@ -121,6 +174,7 @@
 		     sizeof(our_query_sin)) >= 0 &&
 		connect(fileno(fp), (struct sockaddr *) & rmt_query_sin,
 			sizeof(rmt_query_sin)) >= 0) {
+#endif
 
 		/*
 		 * Send query to server. Neglect the risk that a 13-byte
@@ -129,8 +183,13 @@
 		 */
 
 		fprintf(fp, "%u,%u\r\n",
+#ifdef INET6
+			ntohs(((struct sockaddr_in *)rmt_sin)->sin_port),
+			ntohs(((struct sockaddr_in *)our_sin)->sin_port));
+#else
 			ntohs(rmt_sin->sin_port),
 			ntohs(our_sin->sin_port));
+#endif
 		fflush(fp);
 
 		/*
@@ -144,8 +203,13 @@
 		    && ferror(fp) == 0 && feof(fp) == 0
 		    && sscanf(buffer, "%u , %u : USERID :%*[^:]:%255s",
 			      &rmt_port, &our_port, user) == 3
+#ifdef INET6
+		    && ntohs(((struct sockaddr_in *)rmt_sin)->sin_port) == rmt_port
+		    && ntohs(((struct sockaddr_in *)our_sin)->sin_port) == our_port) {
+#else
 		    && ntohs(rmt_sin->sin_port) == rmt_port
 		    && ntohs(our_sin->sin_port) == our_port) {
+#endif
 
 		    /*
 		     * Strip trailing carriage return. It is part of the
Index: src/tcp_wrappers/scaffold.c
diff -u src/tcp_wrappers/scaffold.c:1.1.1.1 src/tcp_wrappers/scaffold.c:1.12
--- src/tcp_wrappers/scaffold.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/scaffold.c	Fri May  5 18:54:46 2000
@@ -39,6 +41,7 @@
 int     deny_severity = LOG_WARNING;
 int     rfc931_timeout = RFC931_TIMEOUT;
 
+#ifndef INET6
 /* dup_hostent - create hostent in one memory block */
 
 static struct hostent *dup_hostent(hp)
@@ -73,9 +76,46 @@
     }
     return (&hb->host);
 }
+#endif
 
 /* find_inet_addr - find all addresses for this host, result to free() */
 
+#ifdef INET6
+struct addrinfo *find_inet_addr(host)
+char   *host;
+{
+    struct addrinfo hints, *res;
+
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = PF_UNSPEC;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
+    if (getaddrinfo(host, NULL, &hints, &res) == 0)
+	return (res);
+
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = PF_UNSPEC;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_flags = AI_PASSIVE | AI_CANONNAME;
+    if (getaddrinfo(host, NULL, &hints, &res) != 0) {
+	tcpd_warn("%s: host not found", host);
+	return (0);
+    }
+    if (res->ai_family != AF_INET6 && res->ai_family != AF_INET) {
+	tcpd_warn("%d: not an internet host", res->ai_family);
+	freeaddrinfo(res);
+	return (0);
+    }
+    if (!res->ai_canonname) {
+	tcpd_warn("%s: hostname alias", host);
+	tcpd_warn("(cannot obtain official name)", res->ai_canonname);
+    } else if (STR_NE(host, res->ai_canonname)) {
+	tcpd_warn("%s: hostname alias", host);
+	tcpd_warn("(official name: %.*s)", STRING_LENGTH, res->ai_canonname);
+    }
+    return (res);
+}
+#else
 struct hostent *find_inet_addr(host)
 char   *host;
 {
@@ -118,6 +158,7 @@
     }
     return (dup_hostent(hp));
 }
+#endif
 
 /* check_dns - give each address thorough workout, return address count */
 
@@ -125,8 +166,13 @@
 char   *host;
 {
     struct request_info request;
+#ifdef INET6
+    struct sockaddr_storage sin;
+    struct addrinfo *hp, *res;
+#else
     struct sockaddr_in sin;
     struct hostent *hp;
+#endif
     int     count;
     char   *addr;
 
@@ -134,11 +180,18 @@
 	return (0);
     request_init(&request, RQ_CLIENT_SIN, &sin, 0);
     sock_methods(&request);
+#ifndef INET6
     memset((char *) &sin, 0, sizeof(sin));
     sin.sin_family = AF_INET;
+#endif
 
+#ifdef INET6
+    for (res = hp, count = 0; res; res = res->ai_next, count++) {
+	memcpy(&sin, res->ai_addr, res->ai_addrlen);
+#else
     for (count = 0; (addr = hp->h_addr_list[count]) != 0; count++) {
 	memcpy((char *) &sin.sin_addr, addr, sizeof(sin.sin_addr));
+#endif
 
 	/*
 	 * Force host name and address conversions. Use the request structure
@@ -151,7 +204,11 @@
 	    tcpd_warn("host address %s->name lookup failed",
 		      eval_hostaddr(request.client));
     }
+#ifdef INET6
+    freeaddrinfo(hp);
+#else
     free((char *) hp);
+#endif
     return (count);
 }
 
Index: src/tcp_wrappers/scaffold.h
diff -u src/tcp_wrappers/scaffold.h:1.1.1.1 src/tcp_wrappers/scaffold.h:1.2
--- src/tcp_wrappers/scaffold.h:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/scaffold.h	Fri May  5 18:28:13 2000
@@ -4,6 +4,10 @@
   * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
   */
 
+#ifdef INET6
+extern struct addrinfo *find_inet_addr();
+#else
 extern struct hostent *find_inet_addr();
+#endif
 extern int check_dns();
 extern int check_path();
Index: src/tcp_wrappers/socket.c
diff -u src/tcp_wrappers/socket.c:1.1.1.1 src/tcp_wrappers/socket.c:1.20
--- src/tcp_wrappers/socket.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/socket.c	Thu Jul  5 05:26:07 2001
@@ -24,13 +24,22 @@
 #include <sys/types.h>
 #include <sys/param.h>
 #include <sys/socket.h>
+#ifdef INT32_T
+typedef uint32_t u_int32_t;
+#endif
 #include <netinet/in.h>
 #include <netdb.h>
 #include <stdio.h>
 #include <syslog.h>
 #include <string.h>
 
+#ifdef INET6
+#ifndef NI_WITHSCOPEID
+#define NI_WITHSCOPEID	0
+#endif
+#else
 extern char *inet_ntoa();
+#endif
 
 /* Local stuff. */
 
@@ -74,8 +83,13 @@
 void    sock_host(request)
 struct request_info *request;
 {
+#ifdef INET6
+    static struct sockaddr_storage client;
+    static struct sockaddr_storage server;
+#else
     static struct sockaddr_in client;
     static struct sockaddr_in server;
+#endif
     int     len;
     char    buf[BUFSIZ];
     int     fd = request->fd;
@@ -104,7 +118,11 @@
 	memset(buf, 0 sizeof(buf));
 #endif
     }
+#ifdef INET6
+    request->client->sin = (struct sockaddr *)&client;
+#else
     request->client->sin = &client;
+#endif
 
     /*
      * Determine the server binding. This is used for client username
@@ -117,7 +135,11 @@
 	tcpd_warn("getsockname: %m");
 	return;
     }
+#ifdef INET6
+    request->server->sin = (struct sockaddr *)&server;
+#else
     request->server->sin = &server;
+#endif
 }
 
 /* sock_hostaddr - map endpoint address to printable form */
@@ -125,10 +147,26 @@
 void    sock_hostaddr(host)
 struct host_info *host;
 {
+#ifdef INET6
+    struct sockaddr *sin = host->sin;
+    int salen;
+
+    if (!sin)
+	return;
+#ifdef SIN6_LEN
+    salen = sin->sa_len;
+#else
+    salen = (sin->sa_family == AF_INET) ? sizeof(struct sockaddr_in)
+					: sizeof(struct sockaddr_in6);
+#endif
+    getnameinfo(sin, salen, host->addr, sizeof(host->addr),
+		NULL, 0, NI_NUMERICHOST | NI_WITHSCOPEID);
+#else
     struct sockaddr_in *sin = host->sin;
 
     if (sin != 0)
 	STRN_CPY(host->addr, inet_ntoa(sin->sin_addr), sizeof(host->addr));
+#endif
 }
 
 /* sock_hostname - map endpoint address to host name */
@@ -136,6 +174,160 @@
 void    sock_hostname(host)
 struct host_info *host;
 {
+#ifdef INET6
+    struct sockaddr *sin = host->sin;
+    struct sockaddr_in sin4;
+    struct addrinfo hints, *res, *res0 = NULL;
+    int salen, alen, err = 1;
+    char *ap = NULL, *rap, hname[NI_MAXHOST];
+
+    if (sin != NULL) {
+	if (sin->sa_family == AF_INET6) {
+	    struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sin;
+
+	    if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
+		memset(&sin4, 0, sizeof(sin4));
+#ifdef SIN6_LEN
+		sin4.sin_len = sizeof(sin4);
+#endif
+		sin4.sin_family = AF_INET;
+		sin4.sin_port = sin6->sin6_port;
+		sin4.sin_addr.s_addr = *(u_int32_t *)&sin6->sin6_addr.s6_addr[12];
+		sin = (struct sockaddr *)&sin4;
+	    }
+	}
+	switch (sin->sa_family) {
+	case AF_INET:
+	    ap = (char *)&((struct sockaddr_in *)sin)->sin_addr;
+	    alen = sizeof(struct in_addr);
+	    salen = sizeof(struct sockaddr_in);
+	    break;
+	case AF_INET6:
+	    ap = (char *)&((struct sockaddr_in6 *)sin)->sin6_addr;
+	    alen = sizeof(struct in6_addr);
+	    salen = sizeof(struct sockaddr_in6);
+	    break;
+	default:
+	    break;
+	}
+	if (ap)
+	    err = getnameinfo(sin, salen, hname, sizeof(hname),
+			      NULL, 0, NI_WITHSCOPEID | NI_NAMEREQD);
+    }
+    if (!err) {
+
+	STRN_CPY(host->name, hname, sizeof(host->name));
+
+	/* reject numeric addresses */
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = sin->sa_family;
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags = AI_PASSIVE | AI_CANONNAME | AI_NUMERICHOST;
+	if ((err = getaddrinfo(host->name, NULL, &hints, &res0)) == 0) {
+	    freeaddrinfo(res0);
+	    res0 = NULL;
+	    tcpd_warn("host name/name mismatch: "
+		      "reverse lookup results in non-FQDN %s",
+		      host->name);
+	    strcpy(host->name, paranoid);	/* name is bad, clobber it */
+	}
+	err = !err;
+    }
+    if (!err) {
+	/* we are now sure that this is non-numeric */
+
+	/*
+	 * Verify that the address is a member of the address list returned
+	 * by gethostbyname(hostname).
+	 * 
+	 * Verify also that gethostbyaddr() and gethostbyname() return the same
+	 * hostname, or rshd and rlogind may still end up being spoofed.
+	 * 
+	 * On some sites, gethostbyname("localhost") returns "localhost.domain".
+	 * This is a DNS artefact. We treat it as a special case. When we
+	 * can't believe the address list from gethostbyname("localhost")
+	 * we're in big trouble anyway.
+	 */
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = sin->sa_family;
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags = AI_PASSIVE | AI_CANONNAME;
+	if (getaddrinfo(host->name, NULL, &hints, &res0) != 0) {
+
+	    /*
+	     * Unable to verify that the host name matches the address. This
+	     * may be a transient problem or a botched name server setup.
+	     */
+
+	    tcpd_warn("can't verify hostname: getaddrinfo(%s, %s) failed",
+		      host->name,
+		      (sin->sa_family == AF_INET) ? "AF_INET" : "AF_INET6");
+
+	} else if ((res0->ai_canonname == NULL
+		    || STR_NE(host->name, res0->ai_canonname))
+		   && STR_NE(host->name, "localhost")) {
+
+	    /*
+	     * The gethostbyaddr() and gethostbyname() calls did not return
+	     * the same hostname. This could be a nameserver configuration
+	     * problem. It could also be that someone is trying to spoof us.
+	     */
+
+	    tcpd_warn("host name/name mismatch: %s != %.*s",
+		      host->name, STRING_LENGTH,
+		      (res0->ai_canonname == NULL) ? "" : res0->ai_canonname);
+
+	} else {
+
+	    /*
+	     * The address should be a member of the address list returned by
+	     * gethostbyname(). We should first verify that the h_addrtype
+	     * field is AF_INET, but this program has already caused too much
+	     * grief on systems with broken library code.
+	     */
+
+	    for (res = res0; res; res = res->ai_next) {
+		if (res->ai_family != sin->sa_family)
+		    continue;
+		switch (res->ai_family) {
+		case AF_INET:
+		    rap = (char *)&((struct sockaddr_in *)res->ai_addr)->sin_addr;
+		    break;
+		case AF_INET6:
+		    /* need to check scope_id */
+		    if (((struct sockaddr_in6 *)sin)->sin6_scope_id !=
+		        ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id) {
+			continue;
+		    }
+		    rap = (char *)&((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;
+		    break;
+		default:
+		    continue;
+		}
+		if (memcmp(rap, ap, alen) == 0) {
+		    freeaddrinfo(res0);
+		    return;			/* name is good, keep it */
+		}
+	    }
+
+	    /*
+	     * The host name does not map to the initial address. Perhaps
+	     * someone has messed up. Perhaps someone compromised a name
+	     * server.
+	     */
+
+	    getnameinfo(sin, salen, hname, sizeof(hname),
+			NULL, 0, NI_NUMERICHOST | NI_WITHSCOPEID);
+	    tcpd_warn("host name/address mismatch: %s != %.*s",
+		      hname, STRING_LENGTH,
+		      (res0->ai_canonname == NULL) ? "" : res0->ai_canonname);
+	}
+	strcpy(host->name, paranoid);		/* name is bad, clobber it */
+	if (res0)
+	    freeaddrinfo(res0);
+    }
+#else /* INET6 */
     struct sockaddr_in *sin = host->sin;
     struct hostent *hp;
     int     i;
@@ -215,6 +407,7 @@
 	}
 	strcpy(host->name, paranoid);		/* name is bad, clobber it */
     }
+#endif /* INET6 */
 }
 
 /* sock_sink - absorb unreceived IP datagram */
@@ -223,7 +416,11 @@
 int     fd;
 {
     char    buf[BUFSIZ];
+#ifdef INET6
+    struct sockaddr_storage sin;
+#else
     struct sockaddr_in sin;
+#endif
     int     size = sizeof(sin);
 
     /*
Index: src/tcp_wrappers/tcpd.c
diff -u src/tcp_wrappers/tcpd.c:1.1.1.1 src/tcp_wrappers/tcpd.c:1.2
--- src/tcp_wrappers/tcpd.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/tcpd.c	Tue May  4 21:58:36 1999
@@ -120,7 +120,12 @@
 
     /* Report request and invoke the real daemon program. */
 
+#ifdef INET6
+    syslog(allow_severity, "connect from %s (%s)",
+	   eval_client(&request), eval_hostaddr(request.client));
+#else
     syslog(allow_severity, "connect from %s", eval_client(&request));
+#endif
     closelog();
     (void) execv(path, argv);
     syslog(LOG_ERR, "error: cannot execute %s: %m", path);
Index: src/tcp_wrappers/tcpd.h
diff -u src/tcp_wrappers/tcpd.h:1.1.1.1 src/tcp_wrappers/tcpd.h:1.7
--- src/tcp_wrappers/tcpd.h:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/tcpd.h	Mon Aug 23 01:32:43 1999
@@ -11,7 +11,11 @@
 struct host_info {
     char    name[STRING_LENGTH];	/* access via eval_hostname(host) */
     char    addr[STRING_LENGTH];	/* access via eval_hostaddr(host) */
+#ifdef INET6
+    struct sockaddr *sin;		/* socket address or 0 */
+#else
     struct sockaddr_in *sin;		/* socket address or 0 */
+#endif
     struct t_unitdata *unit;		/* TLI transport address or 0 */
     struct request_info *request;	/* for shared information */
 };
Index: src/tcp_wrappers/tcpdchk.c
diff -u src/tcp_wrappers/tcpdchk.c:1.1.1.1 src/tcp_wrappers/tcpdchk.c:1.5
--- src/tcp_wrappers/tcpdchk.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/tcpdchk.c	Fri May  5 18:28:13 2000
@@ -22,6 +22,9 @@
 
 #include <sys/types.h>
 #include <sys/stat.h>
+#ifdef INET6
+#include <sys/socket.h>
+#endif
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <stdio.h>
@@ -397,6 +400,31 @@
     }
 }
 
+#ifdef INET6
+static int is_inet6_addr(pat)
+    char *pat;
+{
+    struct addrinfo hints, *res;
+    int len, ret;
+    char ch;
+
+    if (*pat != '[')
+	return (0);
+    len = strlen(pat);
+    if ((ch = pat[len - 1]) != ']')
+	return (0);
+    pat[len - 1] = '\0';
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = AF_INET6;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
+    if ((ret = getaddrinfo(pat + 1, NULL, &hints, &res)) == 0)
+	freeaddrinfo(res);
+    pat[len - 1] = ch;
+    return (ret == 0);
+}
+#endif
+
 /* check_host - criticize host pattern */
 
 static int check_host(pat)
@@ -423,14 +451,27 @@
 #endif
 #endif
     } else if (mask = split_at(pat, '/')) {	/* network/netmask */
+#ifdef INET6
+	int mask_len;
+
+	if ((dot_quad_addr(pat) == INADDR_NONE
+	    || dot_quad_addr(mask) == INADDR_NONE)
+	    && (!is_inet6_addr(pat)
+		|| ((mask_len = atoi(mask)) < 0 || mask_len > 128)))
+#else
 	if (dot_quad_addr(pat) == INADDR_NONE
 	    || dot_quad_addr(mask) == INADDR_NONE)
+#endif
 	    tcpd_warn("%s/%s: bad net/mask pattern", pat, mask);
     } else if (STR_EQ(pat, "FAIL")) {		/* obsolete */
 	tcpd_warn("FAIL is no longer recognized");
 	tcpd_warn("(use EXCEPT or DENY instead)");
     } else if (reserved_name(pat)) {		/* other reserved */
 	 /* void */ ;
+#ifdef INET6
+    } else if (is_inet6_addr(pat)) { /* IPv6 address */
+	addr_count = 1;
+#endif
     } else if (NOT_INADDR(pat)) {		/* internet name */
 	if (pat[strlen(pat) - 1] == '.') {
 	    tcpd_warn("%s: domain or host name ends in dot", pat);
Index: src/tcp_wrappers/tcpdmatch.c
diff -u src/tcp_wrappers/tcpdmatch.c:1.1.1.1 src/tcp_wrappers/tcpdmatch.c:1.7
--- src/tcp_wrappers/tcpdmatch.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/tcpdmatch.c	Fri May  5 19:06:40 2000
@@ -57,7 +57,11 @@
 int     argc;
 char  **argv;
 {
+#ifdef INET6
+    struct addrinfo hints, *hp, *res;
+#else
     struct hostent *hp;
+#endif
     char   *myname = argv[0];
     char   *client;
     char   *server;
@@ -68,8 +72,13 @@
     int     ch;
     char   *inetcf = 0;
     int     count;
+#ifdef INET6
+    struct sockaddr_storage server_sin;
+    struct sockaddr_storage client_sin;
+#else
     struct sockaddr_in server_sin;
     struct sockaddr_in client_sin;
+#endif
     struct stat st;
 
     /*
@@ -172,13 +181,20 @@
     if (NOT_INADDR(server) == 0 || HOSTNAME_KNOWN(server)) {
 	if ((hp = find_inet_addr(server)) == 0)
 	    exit(1);
+#ifndef INET6
 	memset((char *) &server_sin, 0, sizeof(server_sin));
 	server_sin.sin_family = AF_INET;
+#endif
 	request_set(&request, RQ_SERVER_SIN, &server_sin, 0);
 
+#ifdef INET6
+	for (res = hp, count = 0; res; res = res->ai_next, count++) {
+	    memcpy(&server_sin, res->ai_addr, res->ai_addrlen);
+#else
 	for (count = 0; (addr = hp->h_addr_list[count]) != 0; count++) {
 	    memcpy((char *) &server_sin.sin_addr, addr,
 		   sizeof(server_sin.sin_addr));
+#endif
 
 	    /*
 	     * Force evaluation of server host name and address. Host name
@@ -194,7 +210,11 @@
 	    fprintf(stderr, "Please specify an address instead\n");
 	    exit(1);
 	}
+#ifdef INET6
+	freeaddrinfo(hp);
+#else
 	free((char *) hp);
+#endif
     } else {
 	request_set(&request, RQ_SERVER_NAME, server, 0);
     }
@@ -208,6 +228,18 @@
 	tcpdmatch(&request);
 	exit(0);
     }
+#ifdef INET6
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = AF_INET6;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
+    if (getaddrinfo(client, NULL, &hints, &res) == 0) {
+	freeaddrinfo(res);
+	request_set(&request, RQ_CLIENT_ADDR, client, 0);
+	tcpdmatch(&request);
+	exit(0);
+    }
+#endif
 
     /*
      * Perhaps they are testing special client hostname patterns that aren't
@@ -229,6 +261,34 @@
      */
     if ((hp = find_inet_addr(client)) == 0)
 	exit(1);
+#ifdef INET6
+    request_set(&request, RQ_CLIENT_SIN, &client_sin, 0);
+
+    for (res = hp, count = 0; res; res = res->ai_next, count++) {
+	memcpy(&client_sin, res->ai_addr, res->ai_addrlen);
+
+	/*
+	 * getnameinfo() doesn't do reverse lookup against link-local
+	 * address.  So, we pass through host name evaluation against
+	 * such addresses.
+	 */
+	if (res->ai_family != AF_INET6 ||
+	    !IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)res->ai_addr)->sin6_addr)) {
+	    /*
+	     * Force evaluation of client host name and address. Host name
+	     * conflicts will be reported while eval_hostname() does its job.
+	     */
+	    request_set(&request, RQ_CLIENT_NAME, "", RQ_CLIENT_ADDR, "", 0);
+	    if (STR_EQ(eval_hostname(request.client), unknown))
+		tcpd_warn("host address %s->name lookup failed",
+			  eval_hostaddr(request.client));
+	}
+	tcpdmatch(&request);
+	if (res->ai_next)
+	    printf("\n");
+    }
+    freeaddrinfo(hp);
+#else
     memset((char *) &client_sin, 0, sizeof(client_sin));
     client_sin.sin_family = AF_INET;
     request_set(&request, RQ_CLIENT_SIN, &client_sin, 0);
@@ -250,6 +310,7 @@
 	    printf("\n");
     }
     free((char *) hp);
+#endif
     exit(0);
 }
 
Index: src/tcp_wrappers/tli.c
diff -u src/tcp_wrappers/tli.c:1.1.1.1 src/tcp_wrappers/tli.c:1.4
--- src/tcp_wrappers/tli.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/tli.c	Fri May  5 19:15:09 2000
@@ -65,8 +65,13 @@
 void    tli_host(request)
 struct request_info *request;
 {
+#ifdef INET6
+    static struct sockaddr_storage client;
+    static struct sockaddr_storage server;
+#else
     static struct sockaddr_in client;
     static struct sockaddr_in server;
+#endif
 
     /*
      * If we discover that we are using an IP transport, pretend we never
@@ -76,14 +81,29 @@
 
     tli_endpoints(request);
     if ((request->config = tli_transport(request->fd)) != 0
+#ifdef INET6
+	&& (STR_EQ(request->config->nc_protofmly, "inet") ||
+	    STR_EQ(request->config->nc_protofmly, "inet6"))) {
+#else
 	&& STR_EQ(request->config->nc_protofmly, "inet")) {
+#endif
 	if (request->client->unit != 0) {
+#ifdef INET6
+	    client = *(struct sockaddr_storage *) request->client->unit->addr.buf;
+	    request->client->sin = (struct sockaddr *) &client;
+#else
 	    client = *(struct sockaddr_in *) request->client->unit->addr.buf;
 	    request->client->sin = &client;
+#endif
 	}
 	if (request->server->unit != 0) {
+#ifdef INET6
+	    server = *(struct sockaddr_storage *) request->server->unit->addr.buf;
+	    request->server->sin = (struct sockaddr *) &server;
+#else
 	    server = *(struct sockaddr_in *) request->server->unit->addr.buf;
 	    request->server->sin = &server;
+#endif
 	}
 	tli_cleanup(request);
 	sock_methods(request);
@@ -187,7 +207,15 @@
     }
     while (config = getnetconfig(handlep)) {
 	if (stat(config->nc_device, &from_config) == 0) {
+#ifdef NO_CLONE_DEVICE
+	/*
+	 * If the network devices are not cloned (as is the case for
+	 * Solaris 8 Beta), we must compare the major device numbers.
+	 */
+	    if (major(from_config.st_rdev) == major(from_client.st_rdev))
+#else
 	    if (minor(from_config.st_rdev) == major(from_client.st_rdev))
+#endif
 		break;
 	}
     }
Index: src/tcp_wrappers/update.c
diff -u src/tcp_wrappers/update.c:1.1.1.1 src/tcp_wrappers/update.c:1.3
--- src/tcp_wrappers/update.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/update.c	Mon Aug 23 01:32:43 1999
@@ -46,10 +46,18 @@
 	    request->fd = va_arg(ap, int);
 	    continue;
 	case RQ_CLIENT_SIN:
+#ifdef INET6
+	    request->client->sin = va_arg(ap, struct sockaddr *);
+#else
 	    request->client->sin = va_arg(ap, struct sockaddr_in *);
+#endif
 	    continue;
 	case RQ_SERVER_SIN:
+#ifdef INET6
+	    request->server->sin = va_arg(ap, struct sockaddr *);
+#else
 	    request->server->sin = va_arg(ap, struct sockaddr_in *);
+#endif
 	    continue;
 
 	    /*
Index: src/tcp_wrappers/workarounds.c
diff -u src/tcp_wrappers/workarounds.c:1.1.1.1 src/tcp_wrappers/workarounds.c:1.3
--- src/tcp_wrappers/workarounds.c:1.1.1.1	Tue May  4 21:56:04 1999
+++ src/tcp_wrappers/workarounds.c	Mon Aug 23 01:32:43 1999
@@ -166,11 +166,22 @@
 int    *len;
 {
     int     ret;
+#ifdef INET6
+    struct sockaddr *sin = sa;
+#else
     struct sockaddr_in *sin = (struct sockaddr_in *) sa;
+#endif
 
     if ((ret = getpeername(sock, sa, len)) >= 0
+#ifdef INET6
+	&& ((sin->su_si.si_family == AF_INET6
+	     && IN6_IS_ADDR_UNSPECIFIED(&sin->su_sin6.sin6_addr))
+	    || (sin->su_si.si_family == AF_INET
+		&& sin->su_sin.sin_addr.s_addr == 0))) {
+#else
 	&& sa->sa_family == AF_INET
 	&& sin->sin_addr.s_addr == 0) {
+#endif
 	errno = ENOTCONN;
 	return (-1);
     } else {
--- src/tcp_wrappers/hosts_access.c	2003-08-04 21:36:20.000000000 +0000
+++ src/tcp_wrappers/hosts_access.c	2003-08-04 21:45:59.000000000 +0000
@@ -24,7 +24,13 @@
 /* System libraries. */
 
 #include <sys/types.h>
+#ifdef INT32_T
+    typedef uint32_t u_int32_t;
+#endif
 #include <sys/param.h>
+#ifdef INET6
+#include <sys/socket.h>
+#endif
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <stdio.h>
@@ -33,6 +39,9 @@
 #include <errno.h>
 #include <setjmp.h>
 #include <string.h>
+#ifdef INET6
+#include <netdb.h>
+#endif
 
 extern char *fgets();
 extern int errno;
@@ -83,6 +92,10 @@
 static int host_match();
 static int string_match();
 static int masked_match();
+#ifdef INET6
+static int masked_match4();
+static int masked_match6();
+#endif
 
 /* Size of logical line buffer. */
 
@@ -312,6 +325,13 @@
 {
     int     n;
 
+#ifdef INET6
+    /* convert IPv4 mapped IPv6 address to IPv4 address */
+    if (STRN_EQ(string, "::ffff:", 7)
+       && dot_quad_addr(string + 7) != INADDR_NONE) {
+       string += 7;
+    }
+#endif
 #ifndef DISABLE_WILDCARD_MATCHING
     if (strchr(tok, '*') || strchr(tok,'?')) {  /* contains '*' or '?' */
         /* we must convert the both to lowercase as match_pattern_ylo is case-sensitive */
@@ -333,21 +353,72 @@
     } else if (tok[(n = strlen(tok)) - 1] == '.') {	/* prefix */
 	return (STRN_EQ(tok, string, n));
     } else {					/* exact match */
+#ifdef INET6
+       struct addrinfo hints, *res;
+       struct sockaddr_in6 pat, addr;
+       int len, ret;
+       char ch;
+
+       len = strlen(tok);
+       if (*tok == '[' && tok[len - 1] == ']') {
+           ch = tok[len - 1];
+           tok[len - 1] = '\0';
+           memset(&hints, 0, sizeof(hints));
+           hints.ai_family = AF_INET6;
+           hints.ai_socktype = SOCK_STREAM;
+           hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
+           if ((ret = getaddrinfo(tok + 1, NULL, &hints, &res)) == 0) {
+               memcpy(&pat, res->ai_addr, sizeof(pat));
+               freeaddrinfo(res);
+           }
+           tok[len - 1] = ch;
+           if (ret != 0 || getaddrinfo(string, NULL, &hints, &res) != 0)
+               return NO;
+           memcpy(&addr, res->ai_addr, sizeof(addr));
+           freeaddrinfo(res);
+#ifdef NI_WITHSCOPEID
+           if (pat.sin6_scope_id != 0 &&
+               addr.sin6_scope_id != pat.sin6_scope_id)
+               return NO;
+#endif
+           return (!memcmp(&pat.sin6_addr, &addr.sin6_addr,
+                           sizeof(struct in6_addr)));
+           return (ret);
+       }
+#endif
 	return (STR_EQ(tok, string));
     }
 }
 
 /* masked_match - match address against netnumber/netmask */
 
+#ifdef INET6
 static int masked_match(net_tok, mask_tok, string)
 char   *net_tok;
 char   *mask_tok;
 char   *string;
 {
+    return (masked_match4(net_tok, mask_tok, string) ||
+           masked_match6(net_tok, mask_tok, string));
+}
+
+static int masked_match4(net_tok, mask_tok, string)
+#else
+static int masked_match(net_tok, mask_tok, string)
+#endif
+char   *net_tok;
+char   *mask_tok;
+char   *string;
+{
+#ifdef INET6
+    u_int32_t net;
+    u_int32_t mask;
+    u_int32_t addr;
+#else
     unsigned long net;
     unsigned long mask;
     unsigned long addr;
-
+#endif
     /*
      * Disallow forms other than dotted quad: the treatment that inet_addr()
      * gives to forms with less than four components is inconsistent with the
@@ -358,12 +429,81 @@
 	return (NO);
     if ((net = dot_quad_addr(net_tok)) == INADDR_NONE
 	|| (mask = dot_quad_addr(mask_tok)) == INADDR_NONE) {
+#ifndef INET6
 	tcpd_warn("bad net/mask expression: %s/%s", net_tok, mask_tok);
+#endif
 	return (NO);				/* not tcpd_jump() */
     }
     return ((addr & mask) == net);
 }
 
+#ifdef INET6
+static int masked_match6(net_tok, mask_tok, string)
+char   *net_tok;
+char   *mask_tok;
+char   *string;
+{
+    struct addrinfo hints, *res;
+    struct sockaddr_in6 net, addr;
+    u_int32_t mask;
+    int len, mask_len, i = 0;
+    char ch;
+
+    /*
+     * Behavior of getaddrinfo() against IPv4-mapped IPv6 address is
+     * different between KAME and Solaris8.  While KAME returns
+     * AF_INET6, Solaris8 returns AF_INET.  So, we avoid this here.
+     */
+    if (STRN_EQ(string, "::ffff:", 7)
+       && dot_quad_addr(string + 7) != INADDR_NONE)
+       return (masked_match4(net_tok, mask_tok, string + 7));
+
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = AF_INET6;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
+    if (getaddrinfo(string, NULL, &hints, &res) != 0)
+       return NO;
+    memcpy(&addr, res->ai_addr, sizeof(addr));
+    freeaddrinfo(res);
+
+    /* match IPv6 address against netnumber/prefixlen */
+    len = strlen(net_tok);
+    if (*net_tok != '[' || net_tok[len - 1] != ']')
+       return NO;
+    ch = net_tok[len - 1];
+    net_tok[len - 1] = '\0';
+    if (getaddrinfo(net_tok + 1, NULL, &hints, &res) != 0) {
+       net_tok[len - 1] = ch;
+       return NO;
+    }
+    memcpy(&net, res->ai_addr, sizeof(net));
+    freeaddrinfo(res);
+    net_tok[len - 1] = ch;
+    if ((mask_len = atoi(mask_tok)) < 0 || mask_len > 128)
+       return NO;
+
+#ifdef NI_WITHSCOPEID
+    if (net.sin6_scope_id != 0 && addr.sin6_scope_id != net.sin6_scope_id)
+       return NO;
+#endif
+    while (mask_len > 0) {
+       if (mask_len < 32) {
+           mask = htonl(~(0xffffffff >> mask_len));
+           if ((*(u_int32_t *)&addr.sin6_addr.s6_addr[i] & mask) != (*(u_int32_t *)&net.sin6_addr.s6_addr[i] & mask))
+               return NO;
+           break;
+       }
+       if (*(u_int32_t *)&addr.sin6_addr.s6_addr[i] != *(u_int32_t *)&net.sin6_addr.s6_addr[i])
+           return NO;
+       i += 4;
+       mask_len -= 32;
+    }
+    return YES;
+}
+#endif /* INET6 */
+
+
 #ifndef DISABLE_WILDCARD_MATCHING
 /* Note: this feature has been adapted in a pretty straightforward way
    from Tatu Ylonen's last SSH version under free license by
--- src/tcp_wrappers/hosts_access.5	2003-08-04 21:52:29.000000000 +0000
+++ src/tcp_wrappers/hosts_access.5	2003-08-04 21:53:39.000000000 +0000
@@ -85,7 +85,7 @@
 for daemon process names or for client user names.
 .IP \(bu
 An expression of the form `n.n.n.n/m.m.m.m\' is interpreted as a
-`net/mask\' pair. A host address is matched if `net\' is equal to the
+`net/mask\' pair. A IPv4 host address is matched if `net\' is equal to the
 bitwise AND of the address and the `mask\'. For example, the net/mask
 pattern `131.155.72.0/255.255.254.0\' matches every address in the
 range `131.155.72.0\' through `131.155.73.255\'.
@@ -96,6 +96,13 @@
 zero or more lines with zero or more host name or address patterns
 separated by whitespace.  A file name pattern can be used anywhere
 a host name or address pattern can be used.
+.IP \(bu
+An expression of the form `[n:n:n:n:n:n:n:n]/m\' is interpreted as a
+`[net]/prefixlen\' pair. A IPv6 host address is matched if
+`prefixlen\' bits of `net\' is equal to the `prefixlen\' bits of the
+address. For example, the [net]/prefixlen pattern
+`[3ffe:505:2:1::]/64\' matches every address in the range
+`3ffe:505:2:1::\' through `3ffe:505:2:1:ffff:ffff:ffff:ffff\'.
 .SH WILDCARDS
 The access control language supports explicit wildcards:
 .IP ALL