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ae66cffc19
- Unbreak GSSAPI [1] - rc.d/openssh: Allow modifying host key generation [2] Changes: https://www.openssh.com/txt/release-8.9 PR: 259909 [1] PR: 202169 [2] Submitted by: Rick Miller [1] Submitted by: Chad Jacob Milios [2]
158 lines
4.5 KiB
Text
158 lines
4.5 KiB
Text
Revert TCPWRAPPER removal -bdrewery
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commit f2719b7c2b8a3b14d778d8a6d8dc729b5174b054
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Author: Damien Miller <djm@mindrot.org>
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Date: Sun Apr 20 13:22:18 2014 +1000
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- tedu@cvs.openbsd.org 2014/03/26 19:58:37
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[sshd.8 sshd.c]
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remove libwrap support. ok deraadt djm mfriedl
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diff --git sshd.8 sshd.8
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index 289e13d..e6a900b 100644
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--- sshd.8
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+++ sshd.8
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@@ -851,6 +851,12 @@ the user's home directory becomes accessible.
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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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@@ -954,6 +960,7 @@ The content of this file is not sensitive; it can be world-readable.
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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 --git sshd.c sshd.c
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index 0ade557..045f149 100644
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--- sshd.c.orig 2018-04-04 15:34:54.865684000 -0700
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+++ sshd.c 2018-04-04 15:40:20.964130000 -0700
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@@ -1,4 +1,4 @@
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-/* $OpenBSD: sshd.c,v 1.506 2018/03/03 03:15:51 djm Exp $ */
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+/* $OpenBSD: sshd.c,v 1.422 2014/03/27 23:01:27 markus Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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@@ -131,6 +131,13 @@
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#include "version.h"
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#include "ssherr.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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/* Re-exec fds */
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#define REEXEC_DEVCRYPTO_RESERVED_FD (STDERR_FILENO + 1)
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#define REEXEC_STARTUP_PIPE_FD (STDERR_FILENO + 2)
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@@ -2072,6 +2079,25 @@ main(int ac, char **av)
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#endif
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rdomain = ssh_packet_rdomain_in(ssh);
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+
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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 (ssh_packet_connection_is_on_socket(ssh)) {
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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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laddr = get_local_ipaddr(sock_in);
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--- configure.ac.orig 2022-02-23 03:31:11.000000000 -0800
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+++ configure.ac 2022-03-02 12:47:49.958341000 -0800
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@@ -1599,6 +1599,62 @@ else
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AC_MSG_RESULT([no])
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fi
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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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@@ -5593,6 +5649,7 @@ echo " PAM support: $PAM_MSG"
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echo " OSF SIA support: $SIA_MSG"
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echo " KerberosV support: $KRB5_MSG"
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echo " SELinux support: $SELINUX_MSG"
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+echo " TCP Wrappers support: $TCPW_MSG"
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echo " libedit support: $LIBEDIT_MSG"
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echo " libldns support: $LDNS_MSG"
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echo " Solaris process contract support: $SPC_MSG"
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