#!/usr/bin/env perl
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.haxx.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
#***************************************************************************
# Starts sshd for use in the SCP and SFTP curl test harness tests.
# Also creates the ssh configuration files needed for these tests.
use strict;
use warnings;
use Cwd;
use Cwd 'abs_path';
use Digest::MD5;
use Digest::MD5 'md5_hex';
use MIME::Base64;
#***************************************************************************
# Variables and subs imported from sshhelp module
#
use sshhelp qw(
$sshdexe
$sshexe
$sftpsrvexe
$sftpexe
$sshkeygenexe
$sshdconfig
$sshconfig
$sftpconfig
$knownhosts
$sshdlog
$sshlog
$sftplog
$sftpcmds
$hstprvkeyf
$hstpubkeyf
$hstpubmd5f
$cliprvkeyf
$clipubkeyf
display_sshdconfig
display_sshconfig
display_sftpconfig
display_sshdlog
display_sshlog
display_sftplog
dump_array
find_sshd
find_ssh
find_sftpsrv
find_sftp
find_sshkeygen
logmsg
sshversioninfo
);
#***************************************************************************
# Subs imported from serverhelp module
#
use serverhelp qw(
server_pidfilename
server_logfilename
);
use pathhelp;
#***************************************************************************
my $verbose = 0; # set to 1 for debugging
my $debugprotocol = 0; # set to 1 for protocol debugging
my $port = 8999; # our default SCP/SFTP server port
my $listenaddr = '127.0.0.1'; # default address on which to listen
my $ipvnum = 4; # default IP version of listener address
my $idnum = 1; # default ssh daemon instance number
my $proto = 'ssh'; # protocol the ssh daemon speaks
my $path = getcwd(); # current working directory
my $logdir = $path .'/log'; # directory for log files
my $username = $ENV{USER}; # default user
my $pidfile; # ssh daemon pid file
my $identity = 'curl_client_key'; # default identity file
my $error;
my @cfgarr;
#***************************************************************************
# Parse command line options
#
while(@ARGV) {
if($ARGV[0] eq '--verbose') {
$verbose = 1;
}
elsif($ARGV[0] eq '--debugprotocol') {
$verbose = 1;
$debugprotocol = 1;
}
elsif($ARGV[0] eq '--user') {
if($ARGV[1]) {
$username = $ARGV[1];
shift @ARGV;
}
}
elsif($ARGV[0] eq '--id') {
if($ARGV[1]) {
if($ARGV[1] =~ /^(\d+)$/) {
$idnum = $1 if($1 > 0);
shift @ARGV;
}
}
}
elsif($ARGV[0] eq '--ipv4') {
$ipvnum = 4;
$listenaddr = '127.0.0.1' if($listenaddr eq '::1');
}
elsif($ARGV[0] eq '--ipv6') {
$ipvnum = 6;
$listenaddr = '::1' if($listenaddr eq '127.0.0.1');
}
elsif($ARGV[0] eq '--addr') {
if($ARGV[1]) {
my $tmpstr = $ARGV[1];
if($tmpstr =~ /^(\d\d?\d?)\.(\d\d?\d?)\.(\d\d?\d?)\.(\d\d?\d?)$/) {
$listenaddr = "$1.$2.$3.$4" if($ipvnum == 4);
shift @ARGV;
}
elsif($ipvnum == 6) {
$listenaddr = $tmpstr;
$listenaddr =~ s/^\[(.*)\]$/$1/;
shift @ARGV;
}
}
}
elsif($ARGV[0] eq '--pidfile') {
if($ARGV[1]) {
$pidfile = "$path/". $ARGV[1];
shift @ARGV;
}
}
elsif($ARGV[0] eq '--sshport') {
if($ARGV[1]) {
if($ARGV[1] =~ /^(\d+)$/) {
$port = $1;
shift @ARGV;
}
}
}
else {
print STDERR "\nWarning: sshserver.pl unknown parameter: $ARGV[0]\n";
}
shift @ARGV;
}
#***************************************************************************
# Default ssh daemon pid file name
#
if(!$pidfile) {
$pidfile = "$path/". server_pidfilename($proto, $ipvnum, $idnum);
}
#***************************************************************************
# ssh and sftp server log file names
#
$sshdlog = server_logfilename($logdir, 'ssh', $ipvnum, $idnum);
$sftplog = server_logfilename($logdir, 'sftp', $ipvnum, $idnum);
#***************************************************************************
# Logging level for ssh server and client
#
my $loglevel = $debugprotocol?'DEBUG3':'DEBUG2';
#***************************************************************************
# Validate username
#
if(!$username) {
$error = 'Will not run ssh server without a user name';
}
elsif($username eq 'root') {
$error = 'Will not run ssh server as root to mitigate security risks';
}
if($error) {
logmsg $error;
exit 1;
}
#***************************************************************************
# Find out ssh daemon canonical file name
#
my $sshd = find_sshd();
if(!$sshd) {
logmsg "cannot find $sshdexe";
exit 1;
}
#***************************************************************************
# Find out ssh daemon version info
#
my ($sshdid, $sshdvernum, $sshdverstr, $sshderror) = sshversioninfo($sshd);
if(!$sshdid) {
# Not an OpenSSH or SunSSH ssh daemon
logmsg $sshderror if($verbose);
logmsg 'SCP and SFTP tests require OpenSSH 2.9.9 or later';
exit 1;
}
logmsg "ssh server found $sshd is $sshdverstr" if($verbose);
#***************************************************************************
# ssh daemon command line options we might use and version support
#
# -e: log stderr : OpenSSH 2.9.0 and later
# -f: sshd config file : OpenSSH 1.2.1 and later
# -D: no daemon forking : OpenSSH 2.5.0 and later
# -o: command-line option : OpenSSH 3.1.0 and later
# -t: test config file : OpenSSH 2.9.9 and later
# -?: sshd version info : OpenSSH 1.2.1 and later
#
# -e: log stderr : SunSSH 1.0.0 and later
# -f: sshd config file : SunSSH 1.0.0 and later
# -D: no daemon forking : SunSSH 1.0.0 and later
# -o: command-line option : SunSSH 1.0.0 and later
# -t: test config file : SunSSH 1.0.0 and later
# -?: sshd version info : SunSSH 1.0.0 and later
#***************************************************************************
# Verify minimum ssh daemon version
#
if((($sshdid =~ /OpenSSH/) && ($sshdvernum < 299)) ||
(($sshdid =~ /SunSSH/) && ($sshdvernum < 100))) {
logmsg 'SCP and SFTP tests require OpenSSH 2.9.9 or later';
exit 1;
}
#***************************************************************************
# Find out sftp server plugin canonical file name
#
my $sftpsrv = find_sftpsrv();
if(!$sftpsrv) {
logmsg "cannot find $sftpsrvexe";
exit 1;
}
logmsg "sftp server plugin found $sftpsrv" if($verbose);
#***************************************************************************
# Find out sftp client canonical file name
#
my $sftp = find_sftp();
if(!$sftp) {
logmsg "cannot find $sftpexe";
exit 1;
}
logmsg "sftp client found $sftp" if($verbose);
#***************************************************************************
# Find out ssh keygen canonical file name
#
my $sshkeygen = find_sshkeygen();
if(!$sshkeygen) {
logmsg "cannot find $sshkeygenexe";
exit 1;
}
logmsg "ssh keygen found $sshkeygen" if($verbose);
#***************************************************************************
# Find out ssh client canonical file name
#
my $ssh = find_ssh();
if(!$ssh) {
logmsg "cannot find $sshexe";
exit 1;
}
#***************************************************************************
# Find out ssh client version info
#
my ($sshid, $sshvernum, $sshverstr, $ssherror) = sshversioninfo($ssh);
if(!$sshid) {
# Not an OpenSSH or SunSSH ssh client
logmsg $ssherror if($verbose);
logmsg 'SCP and SFTP tests require OpenSSH 2.9.9 or later';
exit 1;
}
logmsg "ssh client found $ssh is $sshverstr" if($verbose);
#***************************************************************************
# ssh client command line options we might use and version support
#
# -D: dynamic app port forwarding : OpenSSH 2.9.9 and later
# -F: ssh config file : OpenSSH 2.9.9 and later
# -N: no shell/command : OpenSSH 2.1.0 and later
# -p: connection port : OpenSSH 1.2.1 and later
# -v: verbose messages : OpenSSH 1.2.1 and later
# -vv: increase verbosity : OpenSSH 2.3.0 and later
# -V: ssh version info : OpenSSH 1.2.1 and later
#
# -D: dynamic app port forwarding : SunSSH 1.0.0 and later
# -F: ssh config file : SunSSH 1.0.0 and later
# -N: no shell/command : SunSSH 1.0.0 and later
# -p: connection port : SunSSH 1.0.0 and later
# -v: verbose messages : SunSSH 1.0.0 and later
# -vv: increase verbosity : SunSSH 1.0.0 and later
# -V: ssh version info : SunSSH 1.0.0 and later
#***************************************************************************
# Verify minimum ssh client version
#
if((($sshid =~ /OpenSSH/) && ($sshvernum < 299)) ||
(($sshid =~ /SunSSH/) && ($sshvernum < 100))) {
logmsg 'SCP and SFTP tests require OpenSSH 2.9.9 or later';
exit 1;
}
#***************************************************************************
# ssh keygen command line options we actually use and version support
#
# -C: identity comment : OpenSSH 1.2.1 and later
# -f: key filename : OpenSSH 1.2.1 and later
# -N: new passphrase : OpenSSH 1.2.1 and later
# -q: quiet keygen : OpenSSH 1.2.1 and later
# -t: key type : OpenSSH 2.5.0 and later
#
# -C: identity comment : SunSSH 1.0.0 and later
# -f: key filename : SunSSH 1.0.0 and later
# -N: new passphrase : SunSSH 1.0.0 and later
# -q: quiet keygen : SunSSH 1.0.0 and later
# -t: key type : SunSSH 1.0.0 and later
#***************************************************************************
# Generate host and client key files for curl's tests
#
if((! -e $hstprvkeyf) || (! -s $hstprvkeyf) ||
(! -e $hstpubkeyf) || (! -s $hstpubkeyf) ||
(! -e $hstpubmd5f) || (! -s $hstpubmd5f) ||
(! -e $cliprvkeyf) || (! -s $cliprvkeyf) ||
(! -e $clipubkeyf) || (! -s $clipubkeyf)) {
# Make sure all files are gone so ssh-keygen doesn't complain
unlink($hstprvkeyf, $hstpubkeyf, $hstpubmd5f, $cliprvkeyf, $clipubkeyf);
logmsg 'generating host keys...' if($verbose);
if(system "\"$sshkeygen\" -q -t rsa -f $hstprvkeyf -C 'curl test server' -N ''") {
logmsg 'Could not generate host key';
exit 1;
}
logmsg 'generating client keys...' if($verbose);
if(system "\"$sshkeygen\" -q -t rsa -f $cliprvkeyf -C 'curl test client' -N ''") {
logmsg 'Could not generate client key';
exit 1;
}
# Make sure that permissions are restricted so openssh doesn't complain
system "chmod 600 $hstprvkeyf";
system "chmod 600 $cliprvkeyf";
# Save md5 hash of public host key
open(RSAKEYFILE, "<$hstpubkeyf");
my @rsahostkey = do { local $/ = ' '; <RSAKEYFILE> };
close(RSAKEYFILE);
if(!$rsahostkey[1]) {
logmsg 'Failed parsing base64 encoded RSA host key';
exit 1;
}
open(PUBMD5FILE, ">$hstpubmd5f");
print PUBMD5FILE md5_hex(decode_base64($rsahostkey[1]));
close(PUBMD5FILE);
if((! -e $hstpubmd5f) || (! -s $hstpubmd5f)) {
logmsg 'Failed writing md5 hash of RSA host key';
exit 1;
}
}
#***************************************************************************
# Convert paths for curl's tests running on Windows with Cygwin/Msys OpenSSH
#
my $clipubkeyf_config = abs_path("$path/$clipubkeyf");
my $hstprvkeyf_config = abs_path("$path/$hstprvkeyf");
my $pidfile_config = $pidfile;
my $sftpsrv_config = $sftpsrv;
if (pathhelp::os_is_win()) {
# Ensure to use MinGW/Cygwin paths
$clipubkeyf_config = pathhelp::build_sys_abs_path($clipubkeyf_config);
$hstprvkeyf_config = pathhelp::build_sys_abs_path($hstprvkeyf_config);
$pidfile_config = pathhelp::build_sys_abs_path($pidfile_config);
$sftpsrv_config = "internal-sftp";
}
if ($sshdid =~ /OpenSSH-Windows/) {
# Ensure to use native Windows paths with OpenSSH for Windows
$clipubkeyf_config = pathhelp::sys_native_abs_path($clipubkeyf);
$hstprvkeyf_config = pathhelp::sys_native_abs_path($hstprvkeyf);
$pidfile_config = pathhelp::sys_native_abs_path($pidfile);
$sftpsrv_config = pathhelp::sys_native_abs_path($sftpsrv);
$sshdconfig = pathhelp::sys_native_abs_path($sshdconfig);
$sshconfig = pathhelp::sys_native_abs_path($sshconfig);
$sftpconfig = pathhelp::sys_native_abs_path($sftpconfig);
}
#***************************************************************************
# ssh daemon configuration file options we might use and version support
#
# AFSTokenPassing : OpenSSH 1.2.1 and later [1]
# AcceptEnv : OpenSSH 3.9.0 and later
# AddressFamily : OpenSSH 4.0.0 and later
# AllowGroups : OpenSSH 1.2.1 and later
# AllowTcpForwarding : OpenSSH 2.3.0 and later
# AllowUsers : OpenSSH 1.2.1 and later
# AuthorizedKeysFile : OpenSSH 2.9.9 and later
# AuthorizedKeysFile2 : OpenSSH 2.9.9 and later
# Banner : OpenSSH 2.5.0 and later
# ChallengeResponseAuthentication : OpenSSH 2.5.0 and later
# Ciphers : OpenSSH 2.1.0 and later [3]
# ClientAliveCountMax : OpenSSH 2.9.0 and later
# ClientAliveInterval : OpenSSH 2.9.0 and later
# Compression : OpenSSH 3.3.0 and later
# DenyGroups : OpenSSH 1.2.1 and later
# DenyUsers : OpenSSH 1.2.1 and later
# ForceCommand : OpenSSH 4.4.0 and later [3]
# GatewayPorts : OpenSSH 2.1.0 and later
# GSSAPIAuthentication : OpenSSH 3.7.0 and later [1]
# GSSAPICleanupCredentials : OpenSSH 3.8.0 and later [1]
# GSSAPIKeyExchange : SunSSH 1.0.0 and later [1]
# GSSAPIStoreDelegatedCredentials : SunSSH 1.0.0 and later [1]
# GSSCleanupCreds : SunSSH 1.0.0 and later [1]
# GSSUseSessionCredCache : SunSSH 1.0.0 and later [1]
# HostbasedAuthentication : OpenSSH 2.9.0 and later
# HostbasedUsesNameFromPacketOnly : OpenSSH 2.9.0 and later
# HostKey : OpenSSH 1.2.1 and later
# IgnoreRhosts : OpenSSH 1.2.1 and later
# IgnoreUserKnownHosts : OpenSSH 1.2.1 and later
# KbdInteractiveAuthentication : OpenSSH 2.3.0 and later
# KeepAlive : OpenSSH 1.2.1 and later
# KerberosAuthentication : OpenSSH 1.2.1 and later [1]
# KerberosGetAFSToken : OpenSSH 3.8.0 and later [1]
# KerberosOrLocalPasswd : OpenSSH 1.2.1 and later [1]
# KerberosTgtPassing : OpenSSH 1.2.1 and later [1]
# KerberosTicketCleanup : OpenSSH 1.2.1 and later [1]
# KeyRegenerationInterval : OpenSSH 1.2.1 and later
# ListenAddress : OpenSSH 1.2.1 and later
# LoginGraceTime : OpenSSH 1.2.1 and later
# LogLevel : OpenSSH 1.2.1 and later
# LookupClientHostnames : SunSSH 1.0.0 and later
# MACs : OpenSSH 2.5.0 and later [3]
# Match : OpenSSH 4.4.0 and later [3]
# MaxAuthTries : OpenSSH 3.9.0 and later
# MaxStartups : OpenSSH 2.2.0 and later
# PAMAuthenticationViaKbdInt : OpenSSH 2.9.0 and later [2]
# PasswordAuthentication : OpenSSH 1.2.1 and later
# PermitEmptyPasswords : OpenSSH 1.2.1 and later
# PermitOpen : OpenSSH 4.4.0 and later [3]
# PermitRootLogin : OpenSSH 1.2.1 and later
# PermitTunnel : OpenSSH 4.3.0 and later
# PermitUserEnvironment : OpenSSH 3.5.0 and later
# PidFile : OpenSSH 2.1.0 and later
# Port : OpenSSH 1.2.1 and later
# PrintLastLog : OpenSSH 2.9.0 and later
# PrintMotd : OpenSSH 1.2.1 and later
# Protocol : OpenSSH 2.1.0 and later
# PubkeyAuthentication : OpenSSH 2.5.0 and later
# RhostsAuthentication : OpenSSH 1.2.1 and later
# RhostsRSAAuthentication : OpenSSH 1.2.1 and later
# RSAAuthentication : OpenSSH 1.2.1 and later
# ServerKeyBits : OpenSSH 1.2.1 and later
# SkeyAuthentication : OpenSSH 1.2.1 and later [1]
# StrictModes : OpenSSH 1.2.1 and later
# Subsystem : OpenSSH 2.2.0 and later
# SyslogFacility : OpenSSH 1.2.1 and later
# TCPKeepAlive : OpenSSH 3.8.0 and later
# UseDNS : OpenSSH 3.7.0 and later
# UseLogin : OpenSSH 1.2.1 and later
# UsePAM : OpenSSH 3.7.0 and later [1][2]
# UsePrivilegeSeparation : OpenSSH 3.2.2 and later
# VerifyReverseMapping : OpenSSH 3.1.0 and later
# X11DisplayOffset : OpenSSH 1.2.1 and later [3]
# X11Forwarding : OpenSSH 1.2.1 and later
# X11UseLocalhost : OpenSSH 3.1.0 and later
# XAuthLocation : OpenSSH 2.1.1 and later [3]
#
# [1] Option only available if activated at compile time
# [2] Option specific for portable versions
# [3] Option not used in our ssh server config file
#***************************************************************************
# Initialize sshd config with options actually supported in OpenSSH 2.9.9
#
logmsg 'generating ssh server config file...' if($verbose);
@cfgarr = ();
push @cfgarr, '# This is a generated file. Do not edit.';
push @cfgarr, "# $sshdverstr sshd configuration file for curl testing";
push @cfgarr, '#';
# AllowUsers and DenyUsers options should use lowercase on Windows
# and do not support quotes around values for some unknown reason.
if ($sshdid =~ /OpenSSH-Windows/) {
my $username_lc = lc $username;
push @cfgarr, "DenyUsers !$username_lc";
push @cfgarr, "AllowUsers $username_lc";
} else {
push @cfgarr, "DenyUsers !$username";
push @cfgarr, "AllowUsers $username";
}
push @cfgarr, 'DenyGroups';
push @cfgarr, 'AllowGroups';
push @cfgarr, '#';
push @cfgarr, "AuthorizedKeysFile $clipubkeyf_config";
push @cfgarr, "AuthorizedKeysFile2 $clipubkeyf_config";
push @cfgarr, "HostKey $hstprvkeyf_config";
if ($sshdid !~ /OpenSSH-Windows/) {
push @cfgarr, "PidFile $pidfile_config";
}
push @cfgarr, '#';
push @cfgarr, "Port $port";
push @cfgarr, "ListenAddress $listenaddr";
push @cfgarr, 'Protocol 2';
push @cfgarr, '#';
push @cfgarr, 'AllowTcpForwarding yes';
push @cfgarr, 'Banner none';
push @cfgarr, 'ChallengeResponseAuthentication no';
push @cfgarr, 'ClientAliveCountMax 3';
push @cfgarr, 'ClientAliveInterval 0';
push @cfgarr, 'GatewayPorts no';
push @cfgarr, 'HostbasedAuthentication no';
push @cfgarr, 'HostbasedUsesNameFromPacketOnly no';
push @cfgarr, 'IgnoreRhosts yes';
push @cfgarr, 'IgnoreUserKnownHosts yes';
push @cfgarr, 'KeyRegenerationInterval 0';
push @cfgarr, 'LoginGraceTime 30';
push @cfgarr, "LogLevel $loglevel";
push @cfgarr, 'MaxStartups 5';
push @cfgarr, 'PasswordAuthentication no';
push @cfgarr, 'PermitEmptyPasswords no';
push @cfgarr, 'PermitRootLogin no';
push @cfgarr, 'PrintLastLog no';
push @cfgarr, 'PrintMotd no';
push @cfgarr, 'PubkeyAuthentication yes';
push @cfgarr, 'RhostsRSAAuthentication no';
push @cfgarr, 'RSAAuthentication no';
push @cfgarr, 'ServerKeyBits 768';
push @cfgarr, 'StrictModes no';
push @cfgarr, "Subsystem sftp \"$sftpsrv_config\"";
push @cfgarr, 'SyslogFacility AUTH';
push @cfgarr, 'UseLogin no';
push @cfgarr, 'X11Forwarding no';
push @cfgarr, '#';
#***************************************************************************
# Write out initial sshd configuration file for curl's tests
#
$error = dump_array($sshdconfig, @cfgarr);
if($error) {
logmsg $error;
exit 1;
}
#***************************************************************************
# Verifies at run time if sshd supports a given configuration file option
#
sub sshd_supports_opt {
my ($option, $value) = @_;
my $err;
#
if((($sshdid =~ /OpenSSH/) && ($sshdvernum >= 310)) ||
($sshdid =~ /SunSSH/)) {
# ssh daemon supports command line options -t -f and -o
$err = grep /((Unsupported)|(Bad configuration)|(Deprecated)) option.*$option/,
qx("$sshd" -t -f $sshdconfig -o "$option=$value" 2>&1);
return !$err;
}
if(($sshdid =~ /OpenSSH/) && ($sshdvernum >= 299)) {
# ssh daemon supports command line options -t and -f
$err = dump_array($sshdconfig, (@cfgarr, "$option $value"));
if($err) {
logmsg $err;
return 0;
}
$err = grep /((Unsupported)|(Bad configuration)|(Deprecated)) option.*$option/,
qx("$sshd" -t -f $sshdconfig 2>&1);
unlink $sshdconfig;
return !$err;
}
return 0;
}
#***************************************************************************
# Kerberos Authentication support may have not been built into sshd
#
if(sshd_supports_opt('KerberosAuthentication','no')) {
push @cfgarr, 'KerberosAuthentication no';
}
if(sshd_supports_opt('KerberosGetAFSToken','no')) {
push @cfgarr, 'KerberosGetAFSToken no';
}
if(sshd_supports_opt('KerberosOrLocalPasswd','no')) {
push @cfgarr, 'KerberosOrLocalPasswd no';
}
if(sshd_supports_opt('KerberosTgtPassing','no')) {
push @cfgarr, 'KerberosTgtPassing no';
}
if(sshd_supports_opt('KerberosTicketCleanup','yes')) {
push @cfgarr, 'KerberosTicketCleanup yes';
}
#***************************************************************************
# Andrew File System support may have not been built into sshd
#
if(sshd_supports_opt('AFSTokenPassing','no')) {
push @cfgarr, 'AFSTokenPassing no';
}
#***************************************************************************
# S/Key authentication support may have not been built into sshd
#
if(sshd_supports_opt('SkeyAuthentication','no')) {
push @cfgarr, 'SkeyAuthentication no';
}
#***************************************************************************
# GSSAPI Authentication support may have not been built into sshd
#
my $sshd_builtwith_GSSAPI;
if(sshd_supports_opt('GSSAPIAuthentication','no')) {
push @cfgarr, 'GSSAPIAuthentication no';
$sshd_builtwith_GSSAPI = 1;
}
if(sshd_supports_opt('GSSAPICleanupCredentials','yes')) {
push @cfgarr, 'GSSAPICleanupCredentials yes';
}
if(sshd_supports_opt('GSSAPIKeyExchange','no')) {
push @cfgarr, 'GSSAPIKeyExchange no';
}
if(sshd_supports_opt('GSSAPIStoreDelegatedCredentials','no')) {
push @cfgarr, 'GSSAPIStoreDelegatedCredentials no';
}
if(sshd_supports_opt('GSSCleanupCreds','yes')) {
push @cfgarr, 'GSSCleanupCreds yes';
}
if(sshd_supports_opt('GSSUseSessionCredCache','no')) {
push @cfgarr, 'GSSUseSessionCredCache no';
}
push @cfgarr, '#';
#***************************************************************************
# Options that might be supported or not in sshd OpenSSH 2.9.9 and later
#
if(sshd_supports_opt('AcceptEnv','')) {
push @cfgarr, 'AcceptEnv';
}
if(sshd_supports_opt('AddressFamily','any')) {
# Address family must be specified before ListenAddress
splice @cfgarr, 14, 0, 'AddressFamily any';
}
if(sshd_supports_opt('Compression','no')) {
push @cfgarr, 'Compression no';
}
if(sshd_supports_opt('KbdInteractiveAuthentication','no')) {
push @cfgarr, 'KbdInteractiveAuthentication no';
}
if(sshd_supports_opt('KeepAlive','no')) {
push @cfgarr, 'KeepAlive no';
}
if(sshd_supports_opt('LookupClientHostnames','no')) {
push @cfgarr, 'LookupClientHostnames no';
}
if(sshd_supports_opt('MaxAuthTries','10')) {
push @cfgarr, 'MaxAuthTries 10';
}
if(sshd_supports_opt('PAMAuthenticationViaKbdInt','no')) {
push @cfgarr, 'PAMAuthenticationViaKbdInt no';
}
if(sshd_supports_opt('PermitTunnel','no')) {
push @cfgarr, 'PermitTunnel no';
}
if(sshd_supports_opt('PermitUserEnvironment','no')) {
push @cfgarr, 'PermitUserEnvironment no';
}
if(sshd_supports_opt('RhostsAuthentication','no')) {
push @cfgarr, 'RhostsAuthentication no';
}
if(sshd_supports_opt('TCPKeepAlive','no')) {
push @cfgarr, 'TCPKeepAlive no';
}
if(sshd_supports_opt('UseDNS','no')) {
push @cfgarr, 'UseDNS no';
}
if(sshd_supports_opt('UsePAM','no')) {
push @cfgarr, 'UsePAM no';
}
if($sshdid =~ /OpenSSH/) {
# http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6492415
if(sshd_supports_opt('UsePrivilegeSeparation','no')) {
push @cfgarr, 'UsePrivilegeSeparation no';
}
}
if(sshd_supports_opt('VerifyReverseMapping','no')) {
push @cfgarr, 'VerifyReverseMapping no';
}
if(sshd_supports_opt('X11UseLocalhost','yes')) {
push @cfgarr, 'X11UseLocalhost yes';
}
push @cfgarr, '#';
#***************************************************************************
# Write out resulting sshd configuration file for curl's tests
#
$error = dump_array($sshdconfig, @cfgarr);
if($error) {
logmsg $error;
exit 1;
}
#***************************************************************************
# Verify that sshd actually supports our generated configuration file
#
if(system "\"$sshd\" -t -f $sshdconfig > $sshdlog 2>&1") {
logmsg "sshd configuration file $sshdconfig failed verification";
display_sshdlog();
display_sshdconfig();
exit 1;
}
#***************************************************************************
# Generate ssh client host key database file for curl's tests
#
if((! -e $knownhosts) || (! -s $knownhosts)) {
logmsg 'generating ssh client known hosts file...' if($verbose);
unlink($knownhosts);
if(open(RSAKEYFILE, "<$hstpubkeyf")) {
my @rsahostkey = do { local $/ = ' '; <RSAKEYFILE> };
if(close(RSAKEYFILE)) {
if(open(KNOWNHOSTS, ">$knownhosts")) {
print KNOWNHOSTS "$listenaddr ssh-rsa $rsahostkey[1]\n";
if(!close(KNOWNHOSTS)) {
$error = "Error: cannot close file $knownhosts";
}
}
else {
$error = "Error: cannot write file $knownhosts";
}
}
else {
$error = "Error: cannot close file $hstpubkeyf";
}
}
else {
$error = "Error: cannot read file $hstpubkeyf";
}
if($error) {
logmsg $error;
exit 1;
}
}
#***************************************************************************
# Convert paths for curl's tests running on Windows using Cygwin OpenSSH
#
my $identity_config = abs_path("$path/$identity");
my $knownhosts_config = abs_path("$path/$knownhosts");
if (pathhelp::os_is_win()) {
# Ensure to use MinGW/Cygwin paths
$identity_config = pathhelp::build_sys_abs_path($identity_config);
$knownhosts_config = pathhelp::build_sys_abs_path($knownhosts_config);
}
if ($sshdid =~ /OpenSSH-Windows/) {
# Ensure to use native Windows paths with OpenSSH for Windows
$identity_config = pathhelp::sys_native_abs_path($identity);
$knownhosts_config = pathhelp::sys_native_abs_path($knownhosts);
}
#***************************************************************************
# ssh client configuration file options we might use and version support
#
# AddressFamily : OpenSSH 3.7.0 and later
# BatchMode : OpenSSH 1.2.1 and later
# BindAddress : OpenSSH 2.9.9 and later
# ChallengeResponseAuthentication : OpenSSH 2.5.0 and later
# CheckHostIP : OpenSSH 1.2.1 and later
# Cipher : OpenSSH 1.2.1 and later [3]
# Ciphers : OpenSSH 2.1.0 and later [3]
# ClearAllForwardings : OpenSSH 2.9.9 and later
# Compression : OpenSSH 1.2.1 and later
# CompressionLevel : OpenSSH 1.2.1 and later [3]
# ConnectionAttempts : OpenSSH 1.2.1 and later
# ConnectTimeout : OpenSSH 3.7.0 and later
# ControlMaster : OpenSSH 3.9.0 and later
# ControlPath : OpenSSH 3.9.0 and later
# DisableBanner : SunSSH 1.2.0 and later
# DynamicForward : OpenSSH 2.9.0 and later
# EnableSSHKeysign : OpenSSH 3.6.0 and later
# EscapeChar : OpenSSH 1.2.1 and later [3]
# ExitOnForwardFailure : OpenSSH 4.4.0 and later
# ForwardAgent : OpenSSH 1.2.1 and later
# ForwardX11 : OpenSSH 1.2.1 and later
# ForwardX11Trusted : OpenSSH 3.8.0 and later
# GatewayPorts : OpenSSH 1.2.1 and later
# GlobalKnownHostsFile : OpenSSH 1.2.1 and later
# GSSAPIAuthentication : OpenSSH 3.7.0 and later [1]
# GSSAPIDelegateCredentials : OpenSSH 3.7.0 and later [1]
# HashKnownHosts : OpenSSH 4.0.0 and later
# Host : OpenSSH 1.2.1 and later
# HostbasedAuthentication : OpenSSH 2.9.0 and later
# HostKeyAlgorithms : OpenSSH 2.9.0 and later [3]
# HostKeyAlias : OpenSSH 2.5.0 and later [3]
# HostName : OpenSSH 1.2.1 and later
# IdentitiesOnly : OpenSSH 3.9.0 and later
# IdentityFile : OpenSSH 1.2.1 and later
# IgnoreIfUnknown : SunSSH 1.2.0 and later
# KeepAlive : OpenSSH 1.2.1 and later
# KbdInteractiveAuthentication : OpenSSH 2.3.0 and later
# KbdInteractiveDevices : OpenSSH 2.3.0 and later [3]
# LocalCommand : OpenSSH 4.3.0 and later [3]
# LocalForward : OpenSSH 1.2.1 and later [3]
# LogLevel : OpenSSH 1.2.1 and later
# MACs : OpenSSH 2.5.0 and later [3]
# NoHostAuthenticationForLocalhost : OpenSSH 3.0.0 and later
# NumberOfPasswordPrompts : OpenSSH 1.2.1 and later
# PasswordAuthentication : OpenSSH 1.2.1 and later
# PermitLocalCommand : OpenSSH 4.3.0 and later
# Port : OpenSSH 1.2.1 and later
# PreferredAuthentications : OpenSSH 2.5.2 and later
# Protocol : OpenSSH 2.1.0 and later
# ProxyCommand : OpenSSH 1.2.1 and later [3]
# PubkeyAuthentication : OpenSSH 2.5.0 and later
# RekeyLimit : OpenSSH 3.7.0 and later
# RemoteForward : OpenSSH 1.2.1 and later [3]
# RhostsRSAAuthentication : OpenSSH 1.2.1 and later
# RSAAuthentication : OpenSSH 1.2.1 and later
# SendEnv : OpenSSH 3.9.0 and later
# ServerAliveCountMax : OpenSSH 3.8.0 and later
# ServerAliveInterval : OpenSSH 3.8.0 and later
# SmartcardDevice : OpenSSH 2.9.9 and later [1][3]
# StrictHostKeyChecking : OpenSSH 1.2.1 and later
# TCPKeepAlive : OpenSSH 3.8.0 and later
# Tunnel : OpenSSH 4.3.0 and later
# TunnelDevice : OpenSSH 4.3.0 and later [3]
# UsePAM : OpenSSH 3.7.0 and later [1][2][3]
# UsePrivilegedPort : OpenSSH 1.2.1 and later
# User : OpenSSH 1.2.1 and later
# UserKnownHostsFile : OpenSSH 1.2.1 and later
# VerifyHostKeyDNS : OpenSSH 3.8.0 and later
# XAuthLocation : OpenSSH 2.1.1 and later [3]
#
# [1] Option only available if activated at compile time
# [2] Option specific for portable versions
# [3] Option not used in our ssh client config file
#***************************************************************************
# Initialize ssh config with options actually supported in OpenSSH 2.9.9
#
logmsg 'generating ssh client config file...' if($verbose);
@cfgarr = ();
push @cfgarr, '# This is a generated file. Do not edit.';
push @cfgarr, "# $sshverstr ssh client configuration file for curl testing";
push @cfgarr, '#';
push @cfgarr, 'Host *';
push @cfgarr, '#';
push @cfgarr, "Port $port";
push @cfgarr, "HostName $listenaddr";
push @cfgarr, "User $username";
push @cfgarr, 'Protocol 2';
push @cfgarr, '#';
# BindAddress option is not supported by OpenSSH for Windows
if (!($sshdid =~ /OpenSSH-Windows/)) {
push @cfgarr, "BindAddress $listenaddr";
}
push @cfgarr, '#';
push @cfgarr, "IdentityFile $identity_config";
push @cfgarr, "UserKnownHostsFile $knownhosts_config";
push @cfgarr, '#';
push @cfgarr, 'BatchMode yes';
push @cfgarr, 'ChallengeResponseAuthentication no';
push @cfgarr, 'CheckHostIP no';
push @cfgarr, 'ClearAllForwardings no';
push @cfgarr, 'Compression no';
push @cfgarr, 'ConnectionAttempts 3';
push @cfgarr, 'ForwardAgent no';
push @cfgarr, 'ForwardX11 no';
push @cfgarr, 'GatewayPorts no';
push @cfgarr, 'GlobalKnownHostsFile /dev/null';
push @cfgarr, 'HostbasedAuthentication no';
push @cfgarr, 'KbdInteractiveAuthentication no';
push @cfgarr, "LogLevel $loglevel";
push @cfgarr, 'NumberOfPasswordPrompts 0';
push @cfgarr, 'PasswordAuthentication no';
push @cfgarr, 'PreferredAuthentications publickey';
push @cfgarr, 'PubkeyAuthentication yes';
# RSA authentication options are not supported by OpenSSH for Windows
if (!($sshdid =~ /OpenSSH-Windows/)) {
push @cfgarr, 'RhostsRSAAuthentication no';
push @cfgarr, 'RSAAuthentication no';
}
# Disabled StrictHostKeyChecking since it makes the tests fail on my
# OpenSSH_6.0p1 on Debian Linux / Daniel
push @cfgarr, 'StrictHostKeyChecking no';
push @cfgarr, 'UsePrivilegedPort no';
push @cfgarr, '#';
#***************************************************************************
# Options supported in ssh client newer than OpenSSH 2.9.9
#
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 370)) {
push @cfgarr, 'AddressFamily any';
}
if((($sshid =~ /OpenSSH/) && ($sshvernum >= 370)) ||
(($sshid =~ /SunSSH/) && ($sshvernum >= 120))) {
push @cfgarr, 'ConnectTimeout 30';
}
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 390)) {
push @cfgarr, 'ControlMaster no';
}
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 420)) {
push @cfgarr, 'ControlPath none';
}
if(($sshid =~ /SunSSH/) && ($sshvernum >= 120)) {
push @cfgarr, 'DisableBanner yes';
}
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 360)) {
push @cfgarr, 'EnableSSHKeysign no';
}
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 440)) {
push @cfgarr, 'ExitOnForwardFailure yes';
}
if((($sshid =~ /OpenSSH/) && ($sshvernum >= 380)) ||
(($sshid =~ /SunSSH/) && ($sshvernum >= 120))) {
push @cfgarr, 'ForwardX11Trusted no';
}
if(($sshd_builtwith_GSSAPI) && ($sshdid eq $sshid) &&
($sshdvernum == $sshvernum)) {
push @cfgarr, 'GSSAPIAuthentication no';
push @cfgarr, 'GSSAPIDelegateCredentials no';
if($sshid =~ /SunSSH/) {
push @cfgarr, 'GSSAPIKeyExchange no';
}
}
if((($sshid =~ /OpenSSH/) && ($sshvernum >= 400)) ||
(($sshid =~ /SunSSH/) && ($sshvernum >= 120))) {
push @cfgarr, 'HashKnownHosts no';
}
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 390)) {
push @cfgarr, 'IdentitiesOnly yes';
}
if(($sshid =~ /SunSSH/) && ($sshvernum >= 120)) {
push @cfgarr, 'IgnoreIfUnknown no';
}
if((($sshid =~ /OpenSSH/) && ($sshvernum < 380)) ||
($sshid =~ /SunSSH/)) {
push @cfgarr, 'KeepAlive no';
}
if((($sshid =~ /OpenSSH/) && ($sshvernum >= 300)) ||
($sshid =~ /SunSSH/)) {
push @cfgarr, 'NoHostAuthenticationForLocalhost no';
}
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 430)) {
push @cfgarr, 'PermitLocalCommand no';
}
if((($sshid =~ /OpenSSH/) && ($sshvernum >= 370)) ||
(($sshid =~ /SunSSH/) && ($sshvernum >= 120))) {
push @cfgarr, 'RekeyLimit 1G';
}
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 390)) {
push @cfgarr, 'SendEnv';
}
if((($sshid =~ /OpenSSH/) && ($sshvernum >= 380)) ||
(($sshid =~ /SunSSH/) && ($sshvernum >= 120))) {
push @cfgarr, 'ServerAliveCountMax 3';
push @cfgarr, 'ServerAliveInterval 0';
}
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 380)) {
push @cfgarr, 'TCPKeepAlive no';
}
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 430)) {
push @cfgarr, 'Tunnel no';
}
if(($sshid =~ /OpenSSH/) && ($sshvernum >= 380)) {
push @cfgarr, 'VerifyHostKeyDNS no';
}
push @cfgarr, '#';
#***************************************************************************
# Write out resulting ssh client configuration file for curl's tests
#
$error = dump_array($sshconfig, @cfgarr);
if($error) {
logmsg $error;
exit 1;
}
#***************************************************************************
# Initialize client sftp config with options actually supported.
#
logmsg 'generating sftp client config file...' if($verbose);
splice @cfgarr, 1, 1, "# $sshverstr sftp client configuration file for curl testing";
#
for(my $i = scalar(@cfgarr) - 1; $i > 0; $i--) {
if($cfgarr[$i] =~ /^DynamicForward/) {
splice @cfgarr, $i, 1;
next;
}
if($cfgarr[$i] =~ /^ClearAllForwardings/) {
splice @cfgarr, $i, 1, "ClearAllForwardings yes";
next;
}
}
#***************************************************************************
# Write out resulting sftp client configuration file for curl's tests
#
$error = dump_array($sftpconfig, @cfgarr);
if($error) {
logmsg $error;
exit 1;
}
@cfgarr = ();
#***************************************************************************
# Generate client sftp commands batch file for sftp server verification
#
logmsg 'generating sftp client commands file...' if($verbose);
push @cfgarr, 'pwd';
push @cfgarr, 'quit';
$error = dump_array($sftpcmds, @cfgarr);
if($error) {
logmsg $error;
exit 1;
}
@cfgarr = ();
#***************************************************************************
# Prepare command line of ssh server daemon
#
my $cmd = "\"$sshd\" -e -D -f $sshdconfig > $sshdlog 2>&1";
logmsg "SCP/SFTP server listening on port $port" if($verbose);
logmsg "RUN: $cmd" if($verbose);
#***************************************************************************
# Start the ssh server daemon on Windows without forking it
#
if ($sshdid =~ /OpenSSH-Windows/) {
# Fake pidfile for ssh server on Windows.
if(open(OUT, ">$pidfile")) {
print OUT $$ . "\n";
close(OUT);
}
# Put an "exec" in front of the command so that the child process
# keeps this child's process ID by being tied to the spawned shell.
exec("exec $cmd") || die "Can't exec() $cmd: $!";
# exec() will create a new process, but ties the existance of the
# new process to the parent waiting perl.exe and sh.exe processes.
# exec() should never return back here to this process. We protect
# ourselves by calling die() just in case something goes really bad.
die "error: exec() has returned";
}
#***************************************************************************
# Start the ssh server daemon without forking it
#
my $rc = system($cmd);
if($rc == -1) {
logmsg "\"$sshd\" failed with: $!";
}
elsif($rc & 127) {
logmsg sprintf("\"$sshd\" died with signal %d, and %s coredump",
($rc & 127), ($rc & 128)?'a':'no');
}
elsif($verbose && ($rc >> 8)) {
logmsg sprintf("\"$sshd\" exited with %d", $rc >> 8);
}
#***************************************************************************
# Clean up once the server has stopped
#
unlink($hstprvkeyf, $hstpubkeyf, $hstpubmd5f,
$cliprvkeyf, $clipubkeyf, $knownhosts,
$sshdconfig, $sshconfig, $sftpconfig);
exit 0;
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