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PKGBUILDs/core/tcp_wrappers/tcp-wrappers-7.6-ipv6-1.14.patch

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Added core/tcp_wrappers with hosts.allow
2010-04-30 20:41:45 +00:00
;; 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'.
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
Reference in a new issue Copy permalink