forked from rpms/openssh
restore tcp wrappers support, based on Debian patch
https://lists.mindrot.org/pipermail/openssh-unix-dev/2014-April/032497.html
This commit is contained in:
Petr Lautrbach
parent
1900351913
commit
f29c8784c6
140
openssh-6.7p1-debian-restore-tcp-wrappers.patch
Normal file
140
openssh-6.7p1-debian-restore-tcp-wrappers.patch
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@ -0,0 +1,140 @@
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diff -up openssh-6.7p1/configure.ac.tcp_wrappers openssh-6.7p1/configure.ac
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--- openssh-6.7p1/configure.ac.tcp_wrappers 2015-01-20 16:58:39.829111746 +0100
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+++ openssh-6.7p1/configure.ac 2015-01-20 16:58:39.870111159 +0100
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@@ -1404,6 +1404,62 @@ AC_ARG_WITH([skey],
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]
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)
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+# Check whether user wants TCP wrappers support
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+TCPW_MSG="no"
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+AC_ARG_WITH([tcp-wrappers],
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+ [ --with-tcp-wrappers[[=PATH]] Enable tcpwrappers support (optionally in PATH)],
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+ [
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+ if test "x$withval" != "xno" ; then
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+ saved_LIBS="$LIBS"
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+ saved_LDFLAGS="$LDFLAGS"
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+ saved_CPPFLAGS="$CPPFLAGS"
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+ if test -n "${withval}" && \
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+ test "x${withval}" != "xyes"; then
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+ if test -d "${withval}/lib"; then
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+ if test -n "${need_dash_r}"; then
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+ LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}"
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+ else
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+ LDFLAGS="-L${withval}/lib ${LDFLAGS}"
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+ fi
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+ else
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+ if test -n "${need_dash_r}"; then
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+ LDFLAGS="-L${withval} -R${withval} ${LDFLAGS}"
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+ else
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+ LDFLAGS="-L${withval} ${LDFLAGS}"
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+ fi
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+ fi
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+ if test -d "${withval}/include"; then
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+ CPPFLAGS="-I${withval}/include ${CPPFLAGS}"
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+ else
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+ CPPFLAGS="-I${withval} ${CPPFLAGS}"
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+ fi
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+ fi
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+ LIBS="-lwrap $LIBS"
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+ AC_MSG_CHECKING([for libwrap])
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+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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+#include <sys/types.h>
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+#include <sys/socket.h>
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+#include <netinet/in.h>
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+#include <tcpd.h>
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+int deny_severity = 0, allow_severity = 0;
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+ ]], [[
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+ hosts_access(0);
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+ ]])], [
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+ AC_MSG_RESULT([yes])
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+ AC_DEFINE([LIBWRAP], [1],
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+ [Define if you want
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+ TCP Wrappers support])
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+ SSHDLIBS="$SSHDLIBS -lwrap"
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+ TCPW_MSG="yes"
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+ ], [
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+ AC_MSG_ERROR([*** libwrap missing])
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+
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+ ])
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+ LIBS="$saved_LIBS"
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+ fi
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+ ]
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+)
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+
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# Check whether user wants to use ldns
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LDNS_MSG="no"
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AC_ARG_WITH(ldns,
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@@ -4959,6 +5015,7 @@ echo " KerberosV support
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echo " SELinux support: $SELINUX_MSG"
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echo " Smartcard support: $SCARD_MSG"
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echo " S/KEY support: $SKEY_MSG"
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+echo " TCP Wrappers support: $TCPW_MSG"
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echo " MD5 password support: $MD5_MSG"
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echo " libedit support: $LIBEDIT_MSG"
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echo " Solaris process contract support: $SPC_MSG"
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diff -up openssh-6.7p1/sshd.8.tcp_wrappers openssh-6.7p1/sshd.8
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--- openssh-6.7p1/sshd.8.tcp_wrappers 2015-01-20 16:58:39.838111617 +0100
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+++ openssh-6.7p1/sshd.8 2015-01-20 16:58:39.871111145 +0100
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@@ -858,6 +858,12 @@ the user's home directory becomes access
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This file should be writable only by the user, and need not be
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readable by anyone else.
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.Pp
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+.It Pa /etc/hosts.allow
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+.It Pa /etc/hosts.deny
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+Access controls that should be enforced by tcp-wrappers are defined here.
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+Further details are described in
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+.Xr hosts_access 5 .
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+.Pp
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.It Pa /etc/hosts.equiv
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This file is for host-based authentication (see
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.Xr ssh 1 ) .
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@@ -981,6 +987,7 @@ IPv6 address can be used everywhere wher
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.Xr ssh-keygen 1 ,
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.Xr ssh-keyscan 1 ,
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.Xr chroot 2 ,
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+.Xr hosts_access 5 ,
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.Xr login.conf 5 ,
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.Xr moduli 5 ,
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.Xr sshd_config 5 ,
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diff -up openssh-6.7p1/sshd.c.tcp_wrappers openssh-6.7p1/sshd.c
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--- openssh-6.7p1/sshd.c.tcp_wrappers 2015-01-20 16:58:39.863111259 +0100
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+++ openssh-6.7p1/sshd.c 2015-01-20 16:59:12.992636776 +0100
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@@ -123,6 +123,13 @@
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#include "ssh-sandbox.h"
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#include "version.h"
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+#ifdef LIBWRAP
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+#include <tcpd.h>
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+#include <syslog.h>
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+int allow_severity;
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+int deny_severity;
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+#endif /* LIBWRAP */
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+
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#ifndef O_NOCTTY
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#define O_NOCTTY 0
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#endif
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@@ -2078,6 +2085,24 @@ main(int ac, char **av)
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#ifdef SSH_AUDIT_EVENTS
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audit_connection_from(remote_ip, remote_port);
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#endif
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+#ifdef LIBWRAP
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+ allow_severity = options.log_facility|LOG_INFO;
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+ deny_severity = options.log_facility|LOG_WARNING;
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+ /* Check whether logins are denied from this host. */
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+ if (packet_connection_is_on_socket()) {
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+ struct request_info req;
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+
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+ request_init(&req, RQ_DAEMON, __progname, RQ_FILE, sock_in, 0);
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+ fromhost(&req);
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+
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+ if (!hosts_access(&req)) {
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+ debug("Connection refused by tcp wrapper");
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+ refuse(&req);
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+ /* NOTREACHED */
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+ fatal("libwrap refuse returns");
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+ }
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+ }
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+#endif /* LIBWRAP */
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/* Log the connection. */
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verbose("Connection from %s port %d on %s port %d",
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@ -219,6 +219,10 @@ Patch918: openssh-6.6.1p1-log-in-chroot.patch
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Patch919: openssh-6.6.1p1-scp-non-existing-directory.patch
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# Config parser shouldn't accept ip/port syntax (#1130733)
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Patch920: openssh-6.6.1p1-ip-port-config-parser.patch
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# restore tcp wrappers support, based on Debian patch
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# https://lists.mindrot.org/pipermail/openssh-unix-dev/2014-April/032497.html
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Patch921: openssh-6.7p1-debian-restore-tcp-wrappers.patch
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License: BSD
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Group: Applications/Internet
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@ -424,6 +428,7 @@ popd
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%patch919 -p1 -b .scp
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%patch920 -p1 -b .config
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%patch802 -p1 -b .GSSAPIEnablek5users
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%patch921 -p1 -b .tcp_wrappers
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%patch200 -p1 -b .audit
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%patch700 -p1 -b .fips
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