diff options
Diffstat (limited to 'patches/source/openssh/openssh.tcp_wrappers.diff')
| -rw-r--r-- | patches/source/openssh/openssh.tcp_wrappers.diff | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/patches/source/openssh/openssh.tcp_wrappers.diff b/patches/source/openssh/openssh.tcp_wrappers.diff new file mode 100644 index 000000000..3b530a5b7 --- /dev/null +++ b/patches/source/openssh/openssh.tcp_wrappers.diff @@ -0,0 +1,139 @@ +--- ./sshd.8.orig 2022-02-23 05:31:11.000000000 -0600 ++++ ./sshd.8 2022-02-24 13:28:36.533888569 -0600 +@@ -908,6 +908,12 @@ + This file should be writable only by the user, and need not be + readable by anyone else. + .Pp ++.It Pa /etc/hosts.allow ++.It Pa /etc/hosts.deny ++Access controls that should be enforced by tcp-wrappers are defined here. ++Further details are described in ++.Xr hosts_access 5 . ++.Pp + .It Pa /etc/hosts.equiv + This file is for host-based authentication (see + .Xr ssh 1 ) . +@@ -1010,6 +1016,7 @@ + .Xr ssh-keygen 1 , + .Xr ssh-keyscan 1 , + .Xr chroot 2 , ++.Xr hosts_access 5 , + .Xr login.conf 5 , + .Xr moduli 5 , + .Xr sshd_config 5 , +--- ./configure.ac.orig 2022-02-23 05:31:11.000000000 -0600 ++++ ./configure.ac 2022-02-24 13:30:10.535883370 -0600 +@@ -1599,6 +1599,62 @@ + AC_MSG_RESULT([no]) + fi + ++# Check whether user wants TCP wrappers support ++TCPW_MSG="no" ++AC_ARG_WITH([tcp-wrappers], ++ [ --with-tcp-wrappers[[=PATH]] Enable tcpwrappers support (optionally in PATH)], ++ [ ++ if test "x$withval" != "xno" ; then ++ saved_LIBS="$LIBS" ++ saved_LDFLAGS="$LDFLAGS" ++ saved_CPPFLAGS="$CPPFLAGS" ++ if test -n "${withval}" && \ ++ test "x${withval}" != "xyes"; then ++ if test -d "${withval}/lib"; then ++ if test -n "${need_dash_r}"; then ++ LDFLAGS="-L${withval}/lib -R${withval}/lib ${LDFLAGS}" ++ else ++ LDFLAGS="-L${withval}/lib ${LDFLAGS}" ++ fi ++ else ++ if test -n "${need_dash_r}"; then ++ LDFLAGS="-L${withval} -R${withval} ${LDFLAGS}" ++ else ++ LDFLAGS="-L${withval} ${LDFLAGS}" ++ fi ++ fi ++ if test -d "${withval}/include"; then ++ CPPFLAGS="-I${withval}/include ${CPPFLAGS}" ++ else ++ CPPFLAGS="-I${withval} ${CPPFLAGS}" ++ fi ++ fi ++ LIBS="-lwrap -lnsl $LIBS" ++ AC_MSG_CHECKING([for libwrap]) ++ AC_LINK_IFELSE([AC_LANG_PROGRAM([[ ++#include <sys/types.h> ++#include <sys/socket.h> ++#include <netinet/in.h> ++#include <tcpd.h> ++int deny_severity = 0, allow_severity = 0; ++ ]], [[ ++ hosts_access(0); ++ ]])], [ ++ AC_MSG_RESULT([yes]) ++ AC_DEFINE([LIBWRAP], [1], ++ [Define if you want ++ TCP Wrappers support]) ++ SSHDLIBS="$SSHDLIBS -lwrap -lnsl" ++ TCPW_MSG="yes" ++ ], [ ++ AC_MSG_ERROR([*** libwrap missing]) ++ ++ ]) ++ LIBS="$saved_LIBS" ++ fi ++ ] ++) ++ + # Check whether user wants to use ldns + LDNS_MSG="no" + AC_ARG_WITH(ldns, +@@ -5593,6 +5649,7 @@ + echo " OSF SIA support: $SIA_MSG" + echo " KerberosV support: $KRB5_MSG" + echo " SELinux support: $SELINUX_MSG" ++echo " TCP Wrappers support: $TCPW_MSG" + echo " libedit support: $LIBEDIT_MSG" + echo " libldns support: $LDNS_MSG" + echo " Solaris process contract support: $SPC_MSG" +--- ./sshd.c.orig 2022-02-23 05:31:11.000000000 -0600 ++++ ./sshd.c 2022-02-24 13:28:36.533888569 -0600 +@@ -129,6 +129,13 @@ + #include "srclimit.h" + #include "dh.h" + ++#ifdef LIBWRAP ++#include <tcpd.h> ++#include <syslog.h> ++int allow_severity; ++int deny_severity; ++#endif /* LIBWRAP */ ++ + /* Re-exec fds */ + #define REEXEC_DEVCRYPTO_RESERVED_FD (STDERR_FILENO + 1) + #define REEXEC_STARTUP_PIPE_FD (STDERR_FILENO + 2) +@@ -2138,6 +2145,26 @@ + the_active_state = ssh; + ssh_packet_set_server(ssh); + ++/* Moved LIBWRAP check here */ ++#ifdef LIBWRAP ++ allow_severity = options.log_facility|LOG_INFO; ++ deny_severity = options.log_facility|LOG_WARNING; ++ /* Check whether logins are denied from this host. */ ++ if (ssh_packet_connection_is_on_socket(ssh)) { /* This check must be after ssh_packet_set_connection() */ ++ struct request_info req; ++ ++ request_init(&req, RQ_DAEMON, __progname, RQ_FILE, sock_in, 0); ++ fromhost(&req); ++ ++ if (!hosts_access(&req)) { ++ debug("Connection refused by tcp wrapper"); ++ refuse(&req); ++ /* NOTREACHED */ ++ fatal("libwrap refuse returns"); ++ } ++ } ++#endif /* LIBWRAP */ ++ + check_ip_options(ssh); + + /* Prepare the channels layer */ |