/usr/sbin/racoon-tool is in racoon 1:0.8.0-9ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#!/usr/bin/perl -w
#
# Script for configuring linux 2.6.x IPSEC
#
# Copyright 2004 Matthew Grant, Catalyst IT Ltd, GPL2
#
# Loads and unloads all modules needed for IPSEC
# Writes configuration files for racoon
# Administers SPD in kernel using setkey program
# Basically imitates Free S/WAN without all the kludgy garbage...
# We are only dealing with IP addresses
use integer;
sub mod_ls ();
sub mod_load ($);
sub mod_unload ($);
sub usage ();
sub mod_start();
sub mod_stop();
sub sad_flush();
sub spd_flush();
sub parse_config();
sub ipsec_start();
sub ipsec_stop();
sub ipsec_load();
sub spd_show();
sub sad_show();
sub parse_spd(\@\%);
sub conn_dump_list();
sub peer_dump_list();
sub global_dump_list();
sub spd_dump_list(\@\%);
sub prog_warn($$;$);
sub prog_die($;$);
sub match_spd_connection(\@\%);
sub conn_down_handle($);
sub conn_down (\@\%$;$$);
sub conn_list($);
sub log_backend();
sub conn_up_handle($);
sub conn_menu($);
sub racoon_write_config($$);
sub racoon_configure(;$);
sub prop_get_indexes (\%);
sub prop_store_index (\%$);
sub conn_reload_handle($);
sub check_if_running ();
sub racoon_start();
sub racoon_stop();
sub basename($$);
sub openlog($$$);
sub syslog($$);
if ($^O =~ /linux/i ) {
$proc_modules = "/proc/modules";
$kver = `uname -r`; chomp $kver;
$modpath = "/lib/modules/" . $kver;
$modpath_ipsec = "$modpath/kernel/net/ipv4";
$modpath_ipsec6 = "$modpath/kernel/net/ipv6";
$modpath_xfrm = "$modpath/kernel/net/xfrm";
$modpath_key = "$modpath/kernel/net/key";
$modpath_crypto = "$modpath/kernel/crypto";
$modpath_zlib = "$modpath/kernel/lib/zlib_deflate";
$modext = ( $kver =~ /^2\.6\.|^3\./ ? ".ko" : ".o" );
$proc_ipv4 = "/proc/sys/net/ipv4";
$proc_ipv6 = "/proc/sys/net/ipv6";
} # endif linux
if ($^O =~ /linux|gnukfreebsd/i) {
$setkey_cmd = "/usr/sbin/setkey";
$confdir = "/etc/racoon";
$vardir = "/var/lib/racoon";
$conffile = "${confdir}/racoon-tool.conf";
$conffiledir = "${confdir}/racoon-tool.conf.d";
$racoon_cmd = "/usr/sbin/racoon";
$less_cmd = "/usr/bin/less";
$more_cmd = "/bin/more";
} elsif ($^O =~ /freebsd/i) {
$setkey_cmd = "/usr/local/sbin/setkey";
$confdir = "/usr/local/etc/racoon";
$vardir = "/var/db/racoon";
$conffile = "${confdir}/racoon-tool.conf";
$conffiledir = "${confdir}/racoon-tool.conf.d";
$racoon_cmd = "/usr/local/sbin/racoon";
$less_cmd = "/usr/bin/less";
$more_cmd = "/usr/bin/more";
} elsif ($^O =~ /netbsd/i) {
# This set of paths is a guess, and needs confirmation
$setkey_cmd = "/usr/sbin/setkey";
$confdir = "/etc/racoon";
$vardir = "/var/db/racoon";
$conffile = "${confdir}/racoon-tool.conf";
$conffiledir = "${confdir}/racoon-tool.conf.d";
$racoon_cmd = "/usr/sbin/racoon";
$less_cmd = "/usr/bin/less";
$more_cmd = "/usr/bin/more";
} else {
prog_die("unsupported platform - '$^O'.");
}
# Some OS kernels need time for their SAD and SPD to settle.
$quiesce = 0;
if ($^O =~ /freebsd/i) {
$quiesce = 1; # seconds
}
$pager_cmd = ( -x $less_cmd ? $less_cmd : $more_cmd );
@pager_flags = ( -x $less_cmd ? ( '-MMXEi' ): ());
# Handle BSD and SYSV ps...
$ps_cmd = ($^O =~ /bsd/i ? "ps axc" : "ps -e");
$psf_cmd = ($^O =~ /bsd/i ? "ps axw" : "ps -eo pid,cmd");
%fmt = ( 'normal' => 1, 'brief' => 2, 'comma' => 3 );
$global_format = $fmt{'normal'};
local $proc_id = $$;
$progname = basename($0, "");
$racoon_kill_delay = 25; # seconds
# global settings hash
my $global_proplist = 'path_pre_shared_key|path_certificate|path_racoon_conf|racoon_command|racoon_pid_file|log|listen\[[-_0-9a-z]+\]|complex_bundle';
my %global = (
'path_pre_shared_key' => "$confdir/psk.txt",
'path_certificate' => "$confdir/certs",
'path_racoon_conf' => "${vardir}/racoon.conf",
'racoon_command' => "${racoon_cmd} -f ___path_racoon_conf___",
'racoon_pid_file' => "/var/run/racoon.pid",
);
# Peer related stuff
my $peer_proplist = 'exchange_mode|encryption_algorithm\[[-_0-9a-z]+\]|hash_algorithm\[[-_0-9a-z]+\]|dh_group\[[-_0-9a-z]+\]|authentication_method\[[-_0-9a-z]+\]|remote_template|lifetime|verify_identifier|verify_cert|passive|generate_policy|my_identifier|peers_identifier|certificate_type|peers_certfile|support_mip6|send_cr|send_cert|initial_contact|proposal_check|nat_traversal|nonce_size';
my %peer_list = ( '%default' => {
'exchange_mode' => 'main',
'encryption_algorithm[0]' => '3des',
'hash_algorithm[0]' => 'sha1',
'dh_group[0]' => 'modp1024',
'authentication_method[0]' => 'pre_shared_key',
'remote_template' => '%default',
# Initialised because proposal 0 is present
'pindexes' => [0]
},
'%anonymous' => {
'passive' => 'on',
'generate_policy' => 'on'
} );
# Connection related stuff
my $conn_proplist = 'src_range|dst_range|src_ip|dst_ip|src_port\[[-_0-9a-z]+\]|dst_port\[[-_0-9a-z]+\]|upperspec|encap|encap\[[-_0-9a-z]+\]|mode|level|level\[[-_0-9a-z]+\]|admin_status|spdadd_template|sadadd_template|sainfo_template|pfs_group|lifetime|encryption_algorithm|authentication_algorithm|compression|id_type|auto_ah_on_esp|always_ah_on_esp|policy|policy\[[-_0-9a-z]+\]';
my @conn_required_props = ( 'src_ip', 'dst_ip');
my %connection_list = ( '%default' => {
'admin_status' => 'disabled',
'upperspec' => 'any',
'encap' => 'esp',
'level' => 'unique',
'policy' => 'ipsec',
'spdadd_template' => '%default',
'sadadd_template' => '%default',
'sainfo_template' => '%default',
'pfs_group' => 'modp1024',
'encryption_algorithm' => 'aes,3des',
'authentication_algorithm' => 'hmac_sha1,hmac_md5',
'id_type' => 'address',
'auto_ah_on_esp' => 'off',
'always_ah_on_esp' => 'off',
'policy' => 'ipsec'
},
'%anonymous' => {
'admin_status' => 'disabled'
} );
my %prop_typehash = ( 'connection' => {
'src_range' => 'range',
'dst_range' => 'range',
'src_ip' => 'ip',
'dst_ip' => 'ip',
'src_port' => 'port',
'dst_port' => 'port',
'upperspec' => 'upperspec',
'encap' => 'encap',
'level' => 'level',
'mode' => 'mode',
'admin_status' => 'boolean',
'spdadd_template' => 'template_name',
'sadadd_template' => 'template_name',
'sainfo_template' => 'template_name',
'pfs_group' => 'pfs_group',
'lifetime' => 'lifetime',
'encryption_algorithm' => 'phase2_encryption',
'authentication_algorithm' => 'phase2_auth_algorithm',
'compression' => 'boolean',
'id_type' => 'id_type',
'auto_ah_on_esp' => 'boolean',
'always_ah_on_esp' => 'boolean',
'policy' => 'policy',
},
'peer' => {
'exchange_mode' => 'phase1_exchange_mode',
'encryption_algorithm' => 'phase1_encryption',
'hash_algorithm' => 'hash_algorithm',
'dh_group' => 'dh_group',
'authentication_method' => 'phase1_auth_method',
'remote_template' => 'template_name',
'lifetime' => 'lifetime',
'verify_identifier' => 'switch',
'verify_cert' => 'switch',
'passive' => 'switch',
'generate_policy' => 'switch',
'initial_contact' => 'switch',
'send_cr' => 'switch',
'send_cert' => 'switch',
'support_mip6' => 'switch',
'my_identifier' => 'identifier',
'peers_identifier' => 'identifier',
'certificate_type' => 'certificate',
'peers_certfile' => 'peers_certfile',
'nonce_size' => 'nonce_size',
'proposal_check' => 'proposal_check',
'nat_traversal' => 'nat_traversal'
},
'global' => {
'racoon_command' => 'shell_command',
'racoon_pid_file' => 'path_generated_file',
'path_pre_shared_key' => 'path_conf_file',
'path_racoon_conf' => 'path_generated_file',
'path_certificate' => 'path_certificate',
'log' => 'log',
'listen' => 'listen',
'complex_bundle' => 'switch'
}
);
my %prop_syntaxhash = ( 'range' => '{ip-address|ip-address/masklen|ip-address[port]|ip-address/masklen[port]}',
'ip' => '{ip-address} - IPv4 or IPv6',
'port' => '{[any]|[port]} - any or port number, []s required',
'uppserspec' => '{protocol} - number or from /etc/protocols or any or icmp6',
'encap' => '{ah|esp}',
'mode' => '{tunnel|transport}',
'boolean' => '{enabled|disabled|true|false|yes|no|up|down|on|off|0|1}',
'template_name' => '{template-name} - can be %default or ^[-a-zA-Z0-9_]+',
'level' => '{default|use|require|unique}',
'phase1_exchange_mode' => '{main|aggressive|base}',
'phase1_encryption' => '{des|3des|blowfish|cast128|aes|camellia}',
'hash_algorithm' => '{md5|sha1|sha256|sha384|sha512}',
'dh_group' => '{modp768|modp1024|modp1536|modp2048|modp3072|modp4096|modp6144|modp8192|1|2|5|14|15|16|17|18}',
'pfs_group' => '{none|modp768|modp1024|modp1536|modp2048|modp3072|modp4096|modp6144|modp8192|1|2|5|14|15|16|17|18}',
'phase1_auth_method' => '{pre_shared_key|rsasig}',
'switch' => '{on|off}',
'lifetime' => '{time} {integer} {hour|hours|min|mins|minutes|sec|secs|seconds}',
'phase2_encryption' => '{des|3des|des_iv64|des_iv32|rc5|rc4|idea|3idea|cast128|blowfish|null_enc|twofish|rijndael|aes|camellia}',
'phase2_auth_algorithm' => '{des|3des|des_iv64|des_iv32|hmac_md5|hmac_sha1|hmac_sha256|hmac_sha384|hmac_sha512|non_auth}',
'identifier' => '{address [ip-address]|fqdn dns-name|user_fqdn user@dns-name|keyid file-name|asn1dn [asn1-name]}',
'certificate' => '{x509 cert-file privkey-file}',
'peers_certfile' => '{x509|plain_rsa|dnssec} {cert-file}',
'path_conf_file' => '{full-path-file-name}',
'shell_command' => '{shell-command}',
'path_generated_file' => '{full-path-file-name}',
'path_certificate' => '{full-path-dir}',
'log' => '{notify|debug|debug2}',
'listen' => '{ip-address} [[port]]',
'proposal_check' => '{obey|strict|claim|exact}',
'nat_traversal' => '{on|off|force}',
'nonce_size' => '{number} - between 8 and 256',
'id_type' => '{address|subnet} - ID type of ISAKMP Phase II identifier',
'policy' => '{discard|ipsec|none} - SPD policy'
);
my %bool_val = ( 'enabled' => 1,
'disabled' => 0,
'true' => 1,
'false' => 0,
'yes' => 1,
'no' => 0,
'up' => 1,
'down' => 0,
'on' => 1,
'off' => 0,
'0' => 0,
'1' =>1 );
# Default templates for spdadd and sadadd defined here
my $sadadd_default = "";
my $spdadd_default = <<'EOF';
spdadd ___src_range___ ___dst_range___ ___upperspec___ -P out ipsec
___encap___/___mode___/___src_ip___-___dst_ip___/___level___;
spdadd ___dst_range___ ___src_range___ ___upperspec___ -P in ipsec
___encap___/___mode___/___dst_ip___-___src_ip___/___level___;
EOF
my $spdadd_alternate_policy = <<'EOF';
spdadd ___src_range___ ___dst_range___ ___upperspec___ -P out ___policy___;
spdadd ___dst_range___ ___src_range___ ___upperspec___ -P in ___policy___;
EOF
%spdadd_addons = ( 'ipcomp_in' => ' ipcomp/___mode___/___dst_ip___-___src_ip___/use',
'ipcomp_out' => ' ipcomp/___mode___/___src_ip___-___dst_ip___/use',
'ah_in' => ' ah/transport/___dst_ip___-___src_ip___/___level___',
'ah_out' => ' ah/transport/___src_ip___-___dst_ip___/___level___'
);
# allow the following icmp control traffic
# - echo reply (0)
# - destination unreachable (3)
# - source quench (4)
# - echo request (8)
# - time exceeded (11)
my $spdadd_ip4_header = << 'EOF';
spdadd ___src_subnet___ ___dst_subnet___ icmp -P out priority 1 none;
spdadd ___dst_subnet___ ___src_subnet___ icmp -P in priority 1 none;
EOF
my $spdadd_ip6_header = << 'EOF';
spdadd ___src_subnet___ ___dst_subnet___ icmp6 -P out priority 1 none;
spdadd ___dst_subnet___ ___src_subnet___ icmp6 -P in priority 1 none;
EOF
my $spdadd_transport_ip4_default = "$spdadd_ip4_header" . "$spdadd_default";
my $spdadd_transport_ip6_default = "$spdadd_ip6_header" . "$spdadd_default";
my $racoon_init_default = <<"EOF";
path pre_shared_key ___path_pre_shared_key___;
path certificate ___path_certificate___;
EOF
%init_addons = ('log' => 'log ___log___;',
'listen' => "listen {\n\tstrict_address;\n}",
'isakmp' => 'isakmp ___listen___;',
'complex_bundle' => 'complex_bundle ___complex_bundle___;'
);
my $remote_default = <<'EOF';
remote ___dst_ip___ {
exchange_mode ___exchange_mode___;
}
EOF
my $remote_proposal = <<'EOF';
proposal {
encryption_algorithm ___encryption_algorithm___;
hash_algorithm ___hash_algorithm___;
authentication_method ___authentication_method___;
dh_group ___dh_group___;
}
EOF
%remote_addons = ( 'verify_identifier' => 'verify_identifier ___verify_identifier___;',
'verify_cert' => 'verify_cert ___verify_cert___;',
'passive' => 'passive ___passive___;',
'generate_policy' => 'generate_policy ___generate_policy___;',
'my_identifier' => 'my_identifier ___my_identifier___;',
'peers_identifier' => 'peers_identifier ___peers_identifier___;',
'peers_certfile' => 'peers_certfile ___peers_certfile___;',
'certificate_type' => 'certificate_type ___certificate_type___;',
'lifetime' => 'lifetime ___lifetime___;',
'initial_contact' => 'initial_contact ___initial_contact___;',
'send_cr' => 'send_cr ___send_cr___;',
'send_cert' => 'send_cert ___send_cert___;',
'support_mip6' => 'support_mip6 ___support_mip6___;',
'nonce_size' => 'nonce_size ___nonce_size___;',
'proposal_check' => 'proposal_check ___proposal_check___;',
'nat_traversal' => 'nat_traversal ___nat_traversal___;'
);
my $sainfo_default = <<'EOF';
sainfo ___id_type___ ___local_id___ ___upperspec___ ___id_type___ ___remote_id___ ___upperspec___ {
encryption_algorithm ___encryption_algorithm___;
authentication_algorithm ___authentication_algorithm___;
compression_algorithm deflate;
}
EOF
%sainfo_addons = ( 'pfs_group' => 'pfs_group ___pfs_group___;',
'lifetime' => 'lifetime ___lifetime___;'
);
@modules = ();
@modules_ipsec = ('ah4', 'esp4', 'ipcomp');
@modules_ipsec6 = ('ah6', 'esp6', 'ipcomp6');
# Make stdout and stderr unbuffered
select STDERR;
$| = 1;
select STDOUT;
$| = 1;
# Make sure we are running as root
if ( $> != 0 ) {
print STDERR "$progname: must be root to run this.\n";
exit 1;
}
# 'Open' syslog
openlog ($progname, 'pid', 'daemon');
# Handle logging backend if '-l' switch given
log_backend ();
# See if we are already running...
check_if_running();
mod_ls();
parse_config();
$have_1arg = "vpndown|vpnup|vpnreload|vpnlist|vpnmenu|vdown|vup|vreload|vlist|vmenu";
# Process command line...
foreach my $i ( 0..$#ARGV ) {
$ARGV[$i] = lc $ARGV[$i];
}
SWITCH: {
!defined $ARGV[0] && do {
usage ();
exit 1;
};
$ARGV[0] =~ /^(${have_1arg})$/ && @ARGV > 2 && do {
usage ();
exit 1;
};
$ARGV[0] !~ /^(${have_1arg})$/ && @ARGV > 1 && do {
usage ();
exit 1;
};
$ARGV[0] =~ /^start$/ && do {
ipsec_start ();
last SWITCH;
};
$ARGV[0] =~ /^stop$/ && do {
ipsec_stop ();
last SWITCH;
};
$ARGV[0] =~ /^reload$/ && do {
ipsec_load ();
last SWITCH;
};
$ARGV[0] =~ /^(restart|force-reload)$/ && do {
ipsec_stop ();
@modules = ();
ipsec_start ();
last SWITCH;
};
$ARGV[0] =~ /^(sadshow|saddump|dump)$/ && do {
# Show the SAD
sad_show ();
last SWITCH;
};
$ARGV[0] =~ /^(spdshow|spddump)$/ && do {
# Show the SPD
spd_show ();
last SWITCH;
};
$ARGV[0] =~ /^(sadflush|flush)$/ && do {
# Flush the SAD
print "Flushing SAD...\n";
sad_flush ();
print "SAD flushed.\n";
prog_warn 'info', "manually flushed SAD";
last SWITCH;
};
$ARGV[0] =~ /^spdflush$/ && do {
# Flush the SPD
print "Flushing SPD...\n";
spd_flush ();
print "SPD flushed.\n";
prog_warn 'info', "manually flushed SPD";
last SWITCH;
};
$ARGV[0] =~ /^(vpndown|vdown)$/ && do {
# Go and do it
conn_down_handle ($ARGV[1]);
last SWITCH;
};
$ARGV[0] =~ /^(vpnmenu|vmenu)$/ && do {
# Go and do it
conn_menu ($ARGV[1]);
last SWITCH;
};
$ARGV[0] =~ /^(vpnup|vup)$/ && do {
# Go and do it
conn_up_handle ($ARGV[1]);
last SWITCH;
};
$ARGV[0] =~ /^(vpnreload|vreload)$/ && do {
# Go and do it
conn_reload_handle ($ARGV[1]);
last SWITCH;
};
$ARGV[0] =~ /^(vpnlist|vlist)$/ && do {
# Go and do it
conn_list ($ARGV[1]);
last SWITCH;
};
$ARGV[0] =~ /^(racoonstart|rstart)$/ && do {
# Go and do it
racoon_start();
last SWITCH;
};
$ARGV[0] =~ /^(racoonstop|rstop)$/ && do {
# Go and do it
racoon_stop();
last SWITCH;
};
usage ();
exit 1;
};
exit 0;
# Functions start here
sub usage () {
print STDERR "\n";
print STDERR " Usage: $progname [-h] sadflush|spdflush|saddump|spddump\n";
print STDERR " |reload|restart|force-reload|start|stop\n";
print STDERR " $progname [-h] vpndown|vdown|vpnup|vup\n";
print STDERR " |vpnreload|vreload connection-name|all\n";
print STDERR " $progname [-h] vpnlist|vlist [connection-name|all]\n";
print STDERR " $progname [-h] vpnmenu|vmenu\n";
print STDERR " $progname [-h] racoonstart|racoonstop|rstart|rstop\n";
print STDERR "\n";
};
sub basename ($$) {
my $name = shift;
my $ext = shift;
$name =~ s/^.*\/(.*)$/$1/;
$name =~ s/^(.*)${ext}$/$1/;
return $name;
}
sub openlog ($$$) {
$log{'ident'} = shift;
$log{'logopt'} = shift;
$log{'facility'} = shift;
my $logger;
$logger = "/usr/bin/logger";
if ( ! -x $logger ) {
$logger = "/bin/logger";
} elsif ( ! -x $logger ) {
die "$progname: cannot run $logger.\n";
}
$log{'logger'} = $logger;
}
sub syslog ($$) {
my $priority = shift;
my $msg = shift;
system("$log{'logger'}", '-p', "$log{'facility'}.${priority}", '-t', "$log{'ident'}\[${proc_id}\]", "$msg");
}
sub check_if_running () {
my @pids = ();
my @procs = grep /\b${progname}$/, (grep ! /^\s*${proc_id}\b/, `$ps_cmd`);
foreach (@procs) {
my @fields = split;
if (!$fields[0]) {
next;
}
push @pids, $fields[0];
}
if (@pids) {
print STDERR "$progname: process(es) @pids are already running.\n";
exit 2;
}
}
sub racoon_get_pids () {
my @pids = ();
my $cmd = '';
my $pid_file = $global{'racoon_pid_file'};
$cmd = $global{'racoon_command'};
if ( $cmd =~ m/^(\S+).*$/ ) {
$cmd = $1;
}
if ( -f $pid_file ) {
if ( ! open PID, "$pid_file" ) {
prog_die "cannot open $pid_file - $!";
}
@pids = ( <PID> );
close PID;
} elsif ( scalar(@pids = grep m#${cmd}[\s\n]#s, (split /^/m, `$psf_cmd`)) ) {
grep { s/^\s*([0-9]+)\s+.*$/$1/; } @pids;
}
return @pids;
}
sub racoon_fill_command ($) {
my $stuff = shift;
foreach my $key (keys %global) {
my $key_reg = $key;
$key_reg =~ s/\[/\\[/g;
$key_reg =~ s/\]/\\]/g;
$stuff =~ s/___${key_reg}___/$global{"$key"}/img;
}
return $stuff;
}
sub racoon_start () {
my $running;
my @pids = ();
print "Starting IKE (ISAKMP/Oakley) server: ";
# see if it is already running
@pids = racoon_get_pids();
if ( $running = kill ( '0', @pids ) ) {
prog_warn 'warning', "racoon already running - exiting.", $fmt{'brief'};
exit 10;
}
# Start it.
my $stuff = racoon_fill_command ($global{'racoon_command'});
system "$stuff";
# See if it started
@pids = racoon_get_pids();
$running = @pids;
if ( ! $running ) {
prog_die "racoon did not start.";
}
print "racoon.\n";
prog_warn 'info', "racoon started.";
}
sub racoon_stop () {
my @pids = ();
my $running;
print "Stopping IKE (ISAKMP/Oakley) server: ";
# Find PIDs to use
@pids = racoon_get_pids();
# see if it is running
$running = kill ('0', @pids );
if ( ! $running ) {
print "not found running.\n";
return;
}
# kill -15 it
$running = kill ( 'TERM', @pids );
my $delay = $racoon_kill_delay;
# Check if any still running
while ( ($running = kill ( '0', @pids )) && $delay) {
sleep 1;
$delay--;
# see if still running, and loop back to wait upto 25 secs
}
# kill -9 it
kill ( 'KILL', @pids );
print "racoon.\n";
prog_warn 'info', "racoon stopped.";
}
sub racoon_configure (;$) {
my $format = shift;
my @pids;
my @new;
my $running = 0;
# Prepare new config file
racoon_write_config ($global{'path_racoon_conf'}, $format);
# HUP racoon to reconfigure it
@pids = racoon_get_pids();
$running = @pids;
sad_flush();
kill ( 'HUP', @pids );
@pids = racoon_get_pids();
if ($running && @pids < 1 ) {
prog_warn 'err', "reconfiguring racoon failed - racoon died, check system logs.", $format;
return -1;
} elsif ( ! $running && @pids < 1) {
prog_warn 'warning', "racoon not running.", $format;
return 0;
}
return 1;
}
sub racoon_fill_remote ($) {
my $peer = shift;
my $stuff;
my $hndl = $peer_list{$peer};
my $template = $hndl->{'remote_template'};
$stuff = $remote{$template};
if ( $template eq '%default' ) {
foreach my $property ( keys %remote_addons ) {
if (defined $hndl->{"$property"}) {
$stuff =~ s/^(\s*remote.*{\s*)$/${1}\n\t${remote_addons{"$property"}}/m;
}
}
my $pindexes = $hndl->{'pindexes'};
foreach my $ind ( @$pindexes ) {
my $to_add = $remote_proposal;
$to_add =~ s/___(\S+)___/___$1\[$ind\]___/gm;
$stuff =~ s/^(\s*remote.*{\s*)$/${1}\n${to_add}/m
}
}
foreach my $key (keys %$hndl) {
my $key_reg = $key;
$key_reg =~ s/\[/\\[/g;
$key_reg =~ s/\]/\\]/g;
$stuff =~ s/___${key_reg}___/$$hndl{"$key"}/img;
}
if ($peer eq '%anonymous' && $template eq '%default' ) {
$stuff =~ s/(remote\s+)\%anonymous/remote anonymous/
}
return $stuff;
}
sub racoon_fill_sainfo ($) {
my $connection = shift;
my $stuff;
my $hndl = $connection_list{$connection};
my $template = $hndl->{'sainfo_template'};
$stuff = $sainfo{$template};
if ( $template eq '%default' ) {
foreach my $property ( keys %sainfo_addons ) {
next if $property eq "pfs_group" &&
defined $hndl->{'pfs_group'} && $hndl->{'pfs_group'} eq 'none';
if ( defined $hndl->{"$property"} ) {
$stuff =~ s/^(\s*sainfo.*)$/${1}\n\t${sainfo_addons{"$property"}}/m;
}
}
}
foreach my $key (keys %$hndl) {
$stuff =~ s/___${key}___/$$hndl{$key}/img;
}
if ($connection eq '%anonymous' && $template eq '%default' ) {
$stuff =~ s/sainfo.*{/sainfo anonymous {/
}
return $stuff;
}
sub racoon_fill_init () {
my $stuff = $racoon_init;
foreach my $key ( keys %global ) {
$key =~ s/^(\S+)\[[-0-9_a-z]+\]$/$1/i;
if ( defined $init_addons{"$key"} ) {
$stuff =~ s/^(\s*path certificate.*)$/${1}\n${init_addons{"$key"}}/m;
}
}
my @indexes = prop_get_indexes ( %global );
foreach my $ind ( @indexes ) {
my $to_add = $init_addons{'isakmp'};
$to_add =~ s/___(\S+)___/___$1\[$ind\]___/gm;
$stuff =~ s/^(\s*listen.*{\s*)$/${1}\n\t${to_add}/m
}
foreach my $key (keys %global) {
my $key_reg = $key;
$key_reg =~ s/\[/\\[/g;
$key_reg =~ s/\]/\\]/g;
$stuff =~ s/___${key_reg}___/$global{"$key"}/img;
}
return $stuff;
}
sub racoon_write_config ($$) {
my $file = shift;
my $format = shift;
my @spd_list;
my %conn_spd_hash;
my @remote_done = ();
my @sainfo_done = ();
parse_spd (@spd_list, %conn_spd_hash);
open (RCF, ">$file")
or prog_die "can't open $file - $!", $format;
# Pretty print comments...
my $hostname = `/bin/hostname`;
my $date = scalar localtime;
print RCF <<"EOF";
#
# Racoon configuration for $hostname
# Generated on $date by $progname
#
EOF
# Print out the racoon header
print RCF "#\n# Global items\n#\n";
my $stuff = racoon_fill_init();
print RCF $stuff;
foreach my $connection ( keys %conn_spd_hash ) {
my $stuff = '';
my $hndl = $connection_list{$connection};
print RCF "#\n# Connection $connection\n#\n";
# print remote clauses needed...
my $dst_ip = $hndl->{'dst_ip'};
if ( ! grep { $dst_ip eq $_ } @remote_done ) {
push @remote_done, $dst_ip;
$stuff = racoon_fill_remote($dst_ip);
print RCF $stuff;
}
my $id_string = $hndl->{'local_id'} . '_' . $hndl->{'remote_id'};
if ( grep { $id_string eq $_ } @sainfo_done) {
print RCF "# using sainfo above here\n\n";
next;
}
push @sainfo_done, $id_string;
# print sainfo clauses needed...
$stuff = racoon_fill_sainfo($connection);
print RCF $stuff;
}
# Handle anonymous connection
my $hndl = $connection_list{'%anonymous'};
my $phndl = $peer_list{'%anonymous'};
if ( defined $hndl && $hndl
&& defined $hndl->{'admin_status'}
&& $bool_val{"$hndl->{'admin_status'}"} != 0
&& $hndl->{'makelive'} != 0
&& defined $phndl
&& $phndl
&& $phndl->{'makelive'} != 0 ) {
my $stuff = '';
print RCF "#\n# Anonymous connection section\n#\n";
$stuff = racoon_fill_remote('%anonymous');
print RCF $stuff;
$stuff = racoon_fill_sainfo('%anonymous');
print RCF $stuff;
}
close RCF;
}
sub log_backend () {
foreach my $arg ( @ARGV ) {
next if $arg ne '-l';
my $error = 0;
while ( <STDIN> ) {
chomp;
prog_warn 0, "setkey said: $_";
$error = 1;
}
exit $error;
}
}
# List all connections
sub conn_list ($) {
my $connection = shift;
my $exit_code = 1;
if ( ! defined $connection || $connection eq 'all' ) {
$connection = '.*';
}
my @conns = grep /${connection}/, keys(%connection_list);
@conns = grep !/^%default$/, @conns;
open( PAGER, '|-' )
|| exec ("$pager_cmd", @pager_flags);
foreach my $conn ( @conns ) {
print PAGER "$conn\n";
}
close PAGER or die "$progname: conn_list () - $pager_cmd failed - exit code " . ($? >> 8) . "\n";
exit ( scalar(@conns) == 0 );
}
# Connection up
sub conn_up_handle ($) {
my $connection = shift;
if (! defined $connection ) {
usage ();
exit 1;
}
if ( $connection eq 'all' ) {
# Flush SPD and SAD
ipsec_flush ();
# Load the SPD
spd_load();
# Do dee racoon...
exit 1 if racoon_configure() < 0;
exit 0;
}
print "Starting VPN $connection...";
if ((my $ret = spd_load($connection)) <= 0 ) {
print "not found in configuration\n" if $ret == 0;
print "syntax problem in configuration.\n" if $ret == -1;
print "already in SPD.\n" if $ret == -2;
exit 1;
}
# Do dee racoon...
exit 1 if racoon_configure($fmt{'brief'}) < 0;
print "done.\n";
prog_warn 'info', "$connection started.";
exit 0;
}
# Connection down
sub conn_down_handle ($) {
my $connection = shift;
my @spd_list;
my %conn_spd_hash;
if ( ! defined $connection ) {
usage ();
exit 1;
}
if ( $connection eq 'all' ) {
# Flush SPD and SAD
ipsec_flush ();
# Do dee racoon...
exit 1 if racoon_configure() < 0;
exit 0;
}
print "Shutting down VPN $connection...";
if ( ! grep /^${connection}$/, keys %connection_list) {
print "not found in configuration.\n";
exit 1;
}
# Read SPD list from kernel...
parse_spd(@spd_list, %conn_spd_hash);
if ( ! conn_down (@spd_list, %conn_spd_hash, $connection, 1) ) {
print "not found in SPD.\n";
exit 0;
}
print "done.\n";
prog_warn 'info', "$connection shutdown.";
exit 0
}
sub conn_reload_handle ($) {
my $connection = shift;
my @spd_list;
my %conn_spd_hash;
if ( ! defined $connection ) {
usage ();
exit 1;
}
if ( $connection eq 'all' ) {
ipsec_load();
exit 0;
}
print "Reloading VPN $connection...";
if ( ! grep /^${connection}$/, keys %connection_list) {
print "not found in configuration.\n";
exit 1;
}
# Read SPD list from kernel...
parse_spd(@spd_list, %conn_spd_hash);
if ( ! conn_down (@spd_list, %conn_spd_hash, $connection, 1, 1) ) {
print "not found in SPD, ";
}
if ((my $ret = spd_load($connection)) <= 0 ) {
print "not found in configuration.\n" if $ret == 0;
print "syntax problem in configuration.\n" if $ret == -1;
print "already in SPD.\n" if $ret == -2;
exit 1;
}
# Do dee racoon...
exit 1 if racoon_configure($fmt{'brief'}) < 0;
print "done.\n";
prog_warn 'info', "$connection reloaded.";
exit 0;
}
sub spd_show_header () {
print "Number Connection Name UpperSpec DirN\n";
print " src_range\n";
print " dst_range\n";
print " policy\n";
}
sub spd_show_entry ($) {
my $entry = shift;
my $conn_name;
if (defined $$entry{'connection'}) {
$conn_name = $$entry{'connection'};
} else {
$conn_name = '';
}
printf " %3.1d %-50s %-9s %-3s\n",
$$entry{'index'}, $conn_name,
$$entry{'upperspec'}, $$entry{'direction'};
print " $$entry{'src_range'}\n";
print " $$entry{'dst_range'}\n";
print " $$entry{'policy'}\n";
}
sub spd_show_footer () {
print "\n";
print "Press <Return> for more, or enter number or VPN-name > ";
}
sub conn_menu ($) {
my $term = shift;
my @spd_list;
my %conn_spd_hash;
# Initialise the SPD data structure
parse_spd(@spd_list, %conn_spd_hash);
# Reverse dirN for better human recongition so that it is in config file order
@spd_list = reverse @spd_list;
my ($pos,$rows,$cols,$do_fill) = 0;
$term = '.*' if ! defined $term;
my @spd = grep { ( defined $$_{'connection'} && $$_{'connection'} =~ m/${term}/ )
|| $$_{'src_range'} =~ m/${term}/
|| $$_{'dst_range'} =~ m/${term}/ } @spd_list;
if ( ! @spd ) {
print "No SPD entries found.\n";
return;
}
REDRAW: while ($pos < @spd_list) {
# get terminal size
($rows, $cols) = split ' ', `stty size`;
my $ntoshow = ($rows - 7) / 4;
my $fill = $rows % $ntoshow;
if ( ($pos +$ntoshow) > @spd) {
$fill += 4*($pos + $ntoshow - @spd);
}
# display SPD list
if ( $do_fill ) {
foreach (0..$fill) { print "\n" };
}
$do_fill = 1;
spd_show_header ();
for ($i=$pos; $i < ($pos + $ntoshow) && $i < @spd; $i++) {
spd_show_entry ($spd[$i]);
}
spd_show_footer ();
# wait for keypress
while ( my $chars = <STDIN> ) {
last if $chars =~ /^$/;
$chars = lc $chars;
exit 0 if $chars =~ /^q$/;
chomp $chars;
my @deleted = conn_down(@spd_list, %conn_spd_hash, $chars) if $chars =~ /^[-0-9a-z_]+$/;
if (! @deleted) {
print "$chars does not exist or cannot be deleted.\n";
}
else {
foreach my $i ( @deleted ) {
@spd = grep { $i != $$_{'index'} } @spd;
$pos -= 1 if $pos > 0;
}
}
if ( ! @spd ) {
print "No selected SPD entries left.\n";
last REDRAW;
}
sleep 2;
next REDRAW;
}
$pos += $ntoshow;
}
}
sub conn_down (\@\%$;$$) {
my $spd_list = shift;
my $conn_spd_hash = shift;
my $spd = shift;
my $conn_force = shift;
my $no_racoon = shift;
my @ret = ();
my @spd_to_del = ();
if ( $conn_force || $spd !~ m/^[0-9]+$/ ) {
# Deal with a connection name
@spd_to_del = keys %$conn_spd_hash;
return @ret if @spd_to_del <= 0;
return @ret if ! grep /^$spd$/, keys %$conn_spd_hash;
@spd_to_del = @{ $conn_spd_hash->{$spd} };
return @ret if @spd_to_del <= 0;
}
else {
# Handle a connection number
# Check that it exists
return @ret if ! grep { $$_{'index'} == $spd } @$spd_list;
# Follow up any connection name and add that one to
my ($spdentry) = grep { $$_{'index'} == $spd } @$spd_list;
goto GO if ! defined $$spdentry{'connection'};
$connection = $$spdentry{'connection'};
goto GO if @{ $conn_spd_hash->{$connection} } <= 0;
push @spd_to_del, @{ $conn_spd_hash->{$connection} };
}
GO:
# Delete entries from SPD
open( SETKEY, '|-')
|| exec ("$setkey_cmd", '-f', '/dev/stdin');
foreach my $spdnum ( @spd_to_del ) {
my ($spdentry) = grep { $$_{'index'} == $spdnum } @$spd_list;
print SETKEY <<"EOF";
spddelete -n $$spdentry{'src_range'} $$spdentry{'dst_range'} $$spdentry{'upperspec'} -P $$spdentry{'direction'};
EOF
push @ret, $spdnum;
}
close SETKEY
or prog_die ("conn_down() - setkey connection deletion failed - exit code ". ($? >> 8) );
sleep($quiesce) if ($quiesce > 0);
# Deal with racoon
if ( ! $no_racoon ) {
racoon_configure();
}
return @ret;
}
# Process warning message
sub prog_warn($$;$) {
my $level = shift;
my $msg = shift;
my $format = shift;
$format = $global_format if ! $format;
$level = 'warning' if ! $level;
$msg =~ s/\t/ /g;
if ( $level ne 'info' ) {
if ( $format == $fmt{'normal'} ) {
print STDERR "$progname: $msg\n"
} elsif ( $format == $fmt{'brief'} ) {
print STDOUT "${msg}\n";
} elsif ( $format == $fmt{'comma'} ) {
$msg =~ s/\.$//;
print STDOUT "${msg}, ";
}
}
$msg =~ s/%/%%/g;
syslog ($level, "$msg");
}
sub prog_die($;$) {
my $msg = shift;
my $format = shift;
prog_warn 'err', $msg, $format;
exit 255;
}
# Dump read in SPD list
sub spd_dump_list (\@\%) {
my $spd_list = shift;
my $conn_spd_hash = shift;
for my $spd ( @$spd_list ) {
print "{ ";
for $val ( keys %$spd ) {
print "$val=$spd->{$val} ";
}
print "}\n";
}
for my $conn ( keys(%$conn_spd_hash) ) {
print "$conn: @{ $conn_spd_hash->{$conn} }\n";
}
}
# Parse SPD to produce SPD list
sub parse_spd (\@\%) {
my $spd_list = shift;
my $conn_spd_hash = shift;
my $src_range;
my $dst_range;
my $upperspec;
my $direction;
my $onespd_flag = 0;
@$spd_list = ();
open (SETKEY, '-|')
|| exec ($setkey_cmd, '-PD');
while (my $line = <SETKEY>) {
# print "$line";
if ( $line =~ m/^\s*([0-9a-fny\.\:\/\[\]]+)\s+([0-9a-fny\.\:\/\[\]]+)\s+([-0-9a-z]+)\s*$/ ){
$src_range = $1;
$dst_range = $2;
$upperspec = $3;
# For Linux
$upperspec = 'any' if ($upperspec eq '255');
$onespd_flag = 1
}
elsif ($onespd_flag > 0) {
$onespd_flag = 0;
$line =~ m/^\s*(in|out|fwd)\s+(prio)?.*\s?(ipsec|none|discard)\s*$/;
$direction = $1;
$policy = $3;
push @$spd_list, { 'src_range', $src_range, 'dst_range', $dst_range,
'upperspec', $upperspec, 'direction', $direction, 'policy', $policy };
# print "[ src_range=$src_range, dst_range=$dst_range, upperspec=$upperspec, direction=$direction ]\n";
}
}
close (SETKEY)
or prog_die "parse_spd() - can't parse SPD - exit code " . ($? >> 8);
# match the SPD policies to configuration data.
match_spd_connection (@$spd_list, %$conn_spd_hash);
}
sub match_spd_connection (\@\%) {
my $spd_list = shift;
my $conn_spd_hash = shift;
my $index = 0;
%$conn_spd_hash = ();
foreach my $spd ( @$spd_list ) {
$spd->{'index'} = $index;
# Loop over connection list to find connection name
foreach my $connection ( keys %connection_list ) {
next if "$connection" eq '%default';
next if ! defined $connection_list{$connection}{'src_ip'};
next if ! defined $connection_list{$connection}{'dst_ip'};
# Quick handle - read only
my $chndl = $connection_list{$connection};
# Below covers ipsec and none
my $pindexes = $chndl->{'pindexes'};
foreach my $ind (@$pindexes) {
if ($spd->{'upperspec'} eq $chndl->{'upperspec'}
&& $spd->{'src_range' } eq $chndl->{"src_range[${ind}]"}
&& $spd->{'dst_range'} eq $chndl->{"dst_range[${ind}]"}
&& $spd->{'direction'} eq 'out'
|| $spd->{'upperspec'} eq $chndl->{'upperspec'}
&& $spd->{'dst_range'} eq $chndl->{"src_range[${ind}]"}
&& $spd->{'src_range'} eq $chndl->{"dst_range[${ind}]"}
&& $spd->{'direction'} eq 'in'
|| $spd->{'upperspec'} eq $chndl->{'upperspec'}
&& $spd->{'dst_range'} eq $chndl->{"src_range[${ind}]"}
&& $spd->{'src_range'} eq $chndl->{"dst_range[${ind}]"}
&& $spd->{'direction'} eq 'fwd') {
$spd->{'connection'} = $connection;
push @{ $conn_spd_hash->{$connection} }, $index;
}
}
# Match for non-multi SPD connections
if ($spd->{'upperspec'} eq $chndl->{'upperspec'}
&& $spd->{'src_range' } eq $chndl->{'src_range'}
&& $spd->{'dst_range'} eq $chndl->{'dst_range'}
&& $spd->{'direction'} eq 'out'
|| $spd->{'upperspec'} eq $chndl->{'upperspec'}
&& $spd->{'dst_range'} eq $chndl->{'src_range'}
&& $spd->{'src_range'} eq $chndl->{'dst_range'}
&& $spd->{'direction'} eq 'in'
|| $spd->{'upperspec'} eq $chndl->{'upperspec'}
&& $spd->{'dst_range'} eq $chndl->{'src_range'}
&& $spd->{'src_range'} eq $chndl->{'dst_range'}
&& $spd->{'direction'} eq 'fwd'
|| $spd->{'src_range' } eq $chndl->{'src_subnet'}
&& $spd->{'dst_range'} eq $chndl->{'dst_subnet'}
&& $spd->{'direction'} eq 'out'
&& $spd->{'policy'} =~ m/^(none|discard)$/
|| $spd->{'dst_range'} eq $chndl->{'src_subnet'}
&& $spd->{'src_range'} eq $chndl->{'dst_subnet'}
&& $spd->{'direction'} eq 'in'
&& $spd->{'policy'} =~ m/^(none|discard)$/
|| $spd->{'dst_range'} eq $chndl->{'src_subnet'}
&& $spd->{'src_range'} eq $chndl->{'dst_subnet'}
&& $spd->{'direction'} eq 'fwd'
&& $spd->{'policy'} =~ m/^(none|discard)$/){
$spd->{'connection'} = $connection;
push @{ $conn_spd_hash->{$connection} }, $index;
}
}
$index ++;
}
}
# start
sub ipsec_start () {
mod_start ();
ipsec_flush ();
ipsec_load ();
racoon_start();
}
# stop
sub ipsec_stop () {
racoon_stop();
ipsec_flush ();
mod_stop ();
}
# load
sub ipsec_load () {
print "Loading SAD and SPD...\n";
sad_init ();
spd_init ();
spd_load();
print "SAD and SPD loaded.\n";
prog_warn 'info', "loaded SAD and SPD.";
print "Configuring racoon...";
exit 1 if racoon_configure($fmt{'brief'}) < 0;
print "done.\n";
prog_warn 'info', "configured racoon.";
return 1;
}
# flush
sub ipsec_flush () {
print "Flushing SAD and SPD...\n";
# Flush the SAD
sad_flush ();
# Flush the SPD
spd_flush ();
print "SAD and SPD flushed.\n";
prog_warn 'info', "flushed SAD and SPD.";
}
# Read configuration
sub parse_config () {
my $line = 0;
my $barf = 0;
my $section = "";
my $connection = "";
my $peer = "";
my $stuff = "";
my @conffiles = ();
if (-e "$conffiledir") {
opendir(CONFDIR, $conffiledir) || prog_die "can't open $conffiledir - $!";
@conffiles = grep { not /^\.{1,2}\z/ or /^.*\.conf$/ } readdir(CONFDIR);
@conffiles = map { $conffiledir . '/' . $_ } @conffiles;
closedir CONFDIR;
}
unshift @conffiles, $conffile;
CF: for my $cf (@conffiles) {
# next CF if ( not -r $cf );
open(CONF, "< $cf")
|| prog_die "can't open $cf - $!";
LINE: while (<CONF>) {
$line +=1;
# Deal with blank lines
if ( m/^\s*$/) {
next LINE;
}
# Comments
if ( m/^[ \t]*#.*$/ ) {
next LINE;
}
# Comments at the end of lines
if ( m/^([^#]*)#.*$/ ) {
$_ = $1;
}
chomp;
if (! m/^[-\"{}()\[\]_;\%\@\w\s.:\/=]+$/) {
prog_warn 0, "bad data in $cf, line $line:";
prog_warn 0, $_;
# $barf = 1;
next LINE;
}
if ( m/^\s*SPDADD\((\%default|[-_a-z0-9]+)\):([\S \t]*)$/i ) {
$name = $1;
$stuff = $2 . "\n";
if ( defined $spdadd{"$name"} ) {
$spdadd{"$name"} .= $stuff;
} else {
$spdadd{"$name"} = $stuff;
}
next LINE;
} elsif ( m/^\s*SPDADD_TRANSPORT_IP4\((\%transport_ip4_default|[-_a-z0-9]+)\):([\S \t]*)$/i ) {
$name = $1;
$stuff = $2 . "\n";
if ( defined $spdadd{"$name"} ) {
$spdadd{"$name"} .= $stuff;
} else {
$spdadd{"$name"} = $stuff;
}
next LINE;
} elsif ( m/^\s*SPDADD_TRANSPORT_IP6\((\%transport_ip6_default|[-_a-z0-9]+)\):([\S \t]*)$/i ) {
$name = $1;
$stuff = $2 . "\n";
if ( defined $spdadd{"$name"} ) {
$spdadd{"$name"} .= $stuff;
} else {
$spdadd{"$name"} = $stuff;
}
next LINE;
} elsif ( m/^\s*SADADD\((\%default|[-_a-z0-9]+)\):([\S \t]*)$/i ) {
$name = $1;
$stuff = $2 . "\n";
if ( defined $sadadd{"$name"} ) {
$sadadd{"$name" } .= $stuff;
} else {
$sadadd{"$name"} = $stuff;
}
next LINE;
} elsif ( m/^\s*REMOTE\((\%default|[-_a-z0-9]+)\):([\S \t]*)$/i ) {
$name = $1;
$stuff = $2 . "\n";
if ( defined $remote{"$name"} ) {
$remote{"$name" } .= $stuff;
} else {
$remote{"$name"} = $stuff;
}
next LINE;
} elsif ( m/^\s*SAINFO\((\%default|[-_a-z0-9]+)\):([\S \t]*)$/i ) {
$name = $1;
$stuff = $2 . "\n";
if ( defined $sainfo{"$name"} ) {
$sainfo{"$name" } .= $stuff;
} else {
$sainfo{"$name"} = $stuff;
}
next LINE;
} elsif ( m/^\s*SADINIT:([\S \t]*)$/i ) {
$name = '';
$stuff = $1 . "\n";
if ( defined $sadinit ) {
$sadinit .= $stuff;
} else {
$sadinit = $stuff;
}
next LINE;
} elsif ( m/^\s*SPDINIT:([\S \t]*)$/i ) {
$name = '';
$stuff = $1 . "\n";
if ( defined $spdinit ) {
$spdinit .= $stuff;
} else {
$spdinit = $stuff;
}
next LINE;
} elsif ( m/^\s*RACOONINIT:([\S \t]*)$/i ) {
$name = '';
$stuff = $1 . "\n";
if ( defined $racoon_init ) {
$racoon_init .= $stuff;
} else {
$racoon_init = $stuff;
}
next LINE;
} elsif ( m/^\s*CONNECTION\((\%default|\%anonymous|[-_a-z0-9]+)\):\s*$/i ) {
$section = 'connection';
$connection = lc $1;
# Make place holder so that error message gets generated
$connection_list{$connection}{'makelive'} = 0;
next LINE;
}
elsif ( m/^\s*PEER\((\%default|\%anonymous|[a-f0-9:\.]+)\):\s*$/i ) {
$peer = lc $1;
if ( $peer ne '%default' && $peer ne '%anonymous' && ! ip_check_syntax ($peer)) {
prog_warn 0, "unrecognised tag in $cf, line $line:";
prog_warn 0, "$_";
prog_warn 0, "invalid peer name - $peer";
next LINE;
}
$section = 'peer';
# Make place holder so that error message gets generated
$peer_list{$peer}{'makelive'} = 0;
next LINE;
}
elsif ( m/^\s*GLOBAL:\s*$/i ) {
$section = 'global';
next LINE;
}
elsif ( $section eq 'connection' && m/^\s*($conn_proplist):\s*(.+)\s*$/i ) {
my $property = lc $1;
my $value = $2;
$value =~ s/^(.*\S)\s*$/$1/;
if ( ! check_property_syntax($section, $property, $value) ) {
prog_warn 0, "$connection - unrecognised connection property syntax.";
prog_warn 0, "$connection - file $cf, line $line:";
prog_warn 0, error_getmsg($section, $property);
prog_warn 0, $_;
$connection_list{$connection}{'syntax_error'} = 1;
next LINE;
}
$value = value_lc($section, $property, $value);
# Keep list of spd indexes for ordering
prop_store_index(%{ $connection_list{$connection} }, $property);
$connection_list{$connection}{$property} = $value;
} elsif ( $section eq 'connection' ) {
prog_warn 0, "$connection - unrecognised tag in $cf, line $line:";
prog_warn 0, $_;
prog_warn 0, "$connection - allowed tags are $conn_proplist";
$connection_list{$connection}{'syntax_error'} = 1;
next LINE;
}
elsif ( $section eq 'peer' && m/^\s*($peer_proplist):\s*(.+)\s*$/i ) {
my $property = lc $1;
my $value = $2;
$value =~ s/^(.*\S)\s*$/$1/;
if ( ! check_property_syntax($section, $property, $value) ) {
prog_warn 0, "$peer - unrecognised peer property syntax or unreadable file(s).";
prog_warn 0, "$peer - file $cf, line $line:";
prog_warn 0, error_getmsg($section, $property);
prog_warn 0, $_;
$peer_list{$peer}{'syntax_error'} = 1;
next LINE;
}
# Keep list of proposal indexes for ordering
prop_store_index(%{ $peer_list{$peer} }, $property);
# $value = value_lc($section, $property, $value);
$peer_list{$peer}{$property} = $value;
} elsif ( $section eq 'peer' ) {
prog_warn 0, "$peer - unrecognised tag in $cf, line $line:";
prog_warn 0, $_;
prog_warn 0, "$peer - allowed tags are $peer_proplist";
$peer_list{$peer}{'syntax_error'} = 1;
next LINE;
}
elsif ( $section eq 'global' && m /^\s*($global_proplist):\s*(.+)\s*$/i ) {
my $property = lc $1;
my $value = $2;
$value =~ s/^(.*\S)\s*$/$1/;
if (! check_property_syntax($section, $property, $value)) {
prog_warn 0, "global - unrecognised global property syntax or unreadable file(s).";
prog_warn 0, "global - file $cf, line $line:";
prog_warn 0, error_getmsg($section, $property);
prog_warn 0, $_;
prog_warn 0, "global - allowed tags are $global_proplist";
$global{'deadly_error'} = 1;
next LINE;
}
$value = value_lc($section, $property, $value);
$global{$property} = $value;
} elsif ( $section eq 'global' ) {
prog_warn 0, "$global - unrecognised tag in $cf, line $line:";
prog_warn 0, $_;
prog_warn 0, "$global - allowed tags are $global_proplist";
}
else {
prog_warn 0, "unrecognised tag in $cf, line $line:";
prog_warn 0, $_;
next LINE;
}
}
close (CONF);
}
if ( $barf ) {
exit 1;
}
# apply defaults
$spdadd{'%default'} = $spdadd_default if ( ! defined $spdadd{'%default'} );
$spdadd{'%transport_ip4_default'} = $spdadd_transport_ip4_default if ( ! defined $spdadd{'%transport_ip4_default'} );
$spdadd{'%transport_ip6_default'} = $spdadd_transport_ip6_default if ( ! defined $spdadd{'%transport_ip6_default'} );
$sadadd{'%default'} = $sadadd_default if ( ! defined $sadadd{'%default'} );
$remote{'%default'} = $remote_default if ( ! defined $remote{'%default'} );
$sainfo{'%default'} = $sainfo_default if ( ! defined $sainfo{'%default'} );
$racoon_init = $racoon_init_default if ( ! defined $racoon_init );
global_fillin_defaults();
conn_fillin_defaults();
peer_fillin_defaults();
peer_check_required();
conn_check_required();
global_check_required();
};
# Lower case value function
sub value_lc ($$$) {
my $section = shift;
my $property = shift;
my $value = shift;
my $ptype = get_proptype($section, $property);
if ( $ptype eq 'path_conf_file' ) {
$value = $value;
} elsif ( $ptype eq 'path_generated_file' ) {
$value = $value;
} elsif ( $ptype eq 'shell_command' ) {
$value = $value;
} elsif ( $ptype eq 'path_certificate' ) {
$value = $value;
} elsif ( $ptype eq 'certificate' ) {
if ( $value =~ m/^\s*x509\s+(\S+)\s+(\S+)\s*$/i ) {
$value = "x509 $1 $2";
}
} elsif ( $ptype =~ 'peers_certfile' ) {
if ( $value =~ m/^\s*dnssec\s*$/i ) {
$value = "dnssec";
} elsif ( $value =~ m/^\s*(plain_rsa|x509)\s+(\S+)\s*$/i ) {
$value = "$1 $2";
}
} elsif ( $ptype eq 'identity' ) {
if ( $value =~ m/^\s*keyid\s+(\S+)\s*$/i ) {
$value = "keyid $1"
}
} else {
$value = lc $value;
}
return $value;
}
# Error mesage lookups
sub error_getmsg ($$) {
my $section = shift;
my $property = shift;
my $ptype = get_proptype($section, $property);
return "$property only takes $prop_syntaxhash{$ptype}";
}
#Fill in global defaults
sub global_fillin_defaults () {
foreach $prop ('path_pre_shared_key', 'path_certificate') {
if ( defined $global{$prop} && $global{$prop} =~ m/^"?(\S+)"?$/i ) {
$global{$prop} = "\"${1}\"";
}
}
foreach $prop ('path_racoon_conf', 'racoon_command', 'racoon_pid_file') {
if ( defined $global{$prop} && $global{$prop} =~ m/^"(\S+)"$/i ) {
$global{$prop} = "${1}";
}
}
}
sub global_check_required () {
if ( $global{'deadly_error'} ) {
prog_warn 'err', "deadly error in global configuration - exiting.";
exit 10;
}
}
#Check synax of IP address
sub ip_check_syntax ($) {
my $ip = shift;
if ( $ip =~ m/^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/ ) {
return 1 if ( $1 >=0 && $1 <= 255 && $2 >= 0 && $2 <= 255
&& $3 >= 0 && $3 <= 255 && $4 >= 0 && $4 <= 255 );
} elsif ( $ip =~ m/^[0-9a-f]{1,4}:[0-9a-f:]*:[0-9a-f]{0,4}$/i ) {
my @dbytes = split /:/, $ip;
my $valid = 1;
foreach my $v ( @dbytes ) {
if ( $v ne '' && $v !~ m/^[0-9a-f]{1,4}$/i && $v < 0 && $v > 0xffff )
{ $valid = 0; }
}
return 1 if $valid;
}
return 0;
}
# Check syntax
sub get_proptype($$) {
my $section = shift;
my $property = shift;
my $ptype;
if ( $property =~ m/^(.*)\[[-_0-9a-z]+\]$/ ) {
$property = $1;
}
$ptype = $prop_typehash{$section}{$property};
return $ptype;
}
sub check_property_syntax ($$$) {
my $section = shift;
my $property = shift;
my $value = shift;
my ($protoname, $protoaliases, $protonumber);
my $ptype;
$ptype = get_proptype($section,$property);
if ( $ptype eq 'boolean' ) {
$value =~ m/^(enabled|disabled|true|false|up|down|on|off|yes|no|0|1)$/i && return 1;
} elsif ( $ptype eq 'id_type' ) {
$value =~ m/^(address|subnet)$/i && return 1;
} elsif ( $ptype eq 'encap' ) {
$value =~ m/^(ah|esp)$/i && return 1;
} elsif ( $ptype eq 'mode' ) {
$value =~ m/^(transport|tunnel)$/i && return 1;
} elsif ( $ptype eq 'template_name' ) {
$value =~ m/^(%default|[-a-z0-9_]+)$/i && return 1;
} elsif ( $ptype eq 'phase1_exchange_mode' ) {
$value =~ m/^((main|aggressive|base),? ?){1,3}$/i && return 1;
} elsif ( $ptype eq 'phase1_encryption' ) {
$value =~ m/^(des|3des|blowfish|cast128|aes|camellia)$/i && return 1;
} elsif ( $ptype eq 'hash_algorithm' ) {
$value =~ m/^(md5|sha1|sha256|sha384|sha512)$/i && return 1;
} elsif ( $ptype eq 'phase1_auth_method' ) {
$value =~ m/^(pre_shared_key|rsasig)$/i && return 1;
} elsif ( $ptype eq 'switch' ) {
$value =~ m/^(on|off)$/i && return 1;
} elsif ( $ptype eq 'lifetime' ) {
$value =~ m/^time\s+[0-9]+\s+(hour|hours|min|mins|minutes|sec|secs|seconds)$/i && return 1;
} elsif ( $ptype eq 'phase2_encryption' ) {
$value =~ m/^((des|3des|des_iv64|des_iv32|rc5|rc4|idea|3idea|cast128|blowfish|null_enc|twofish|rijndael|aes|camellia),? ?)+$/i && return 1;
} elsif ( $ptype eq 'phase2_auth_algorithm' ) {
$value =~ m/^((des|3des|des_iv64|des_iv32|hmac_md5|hmac_sha1|hmac_sha256|hmac_sha384|hmac_sha512|non_auth),? ?)+$/i && return 1;
} elsif ( $ptype eq 'dh_group' ) {
$value =~ m/^(modp768|modp1024|modp1536|modp2048|modp3072|modp4096|modp6144|modp8192|1|2|5|14|15|16|17|18)$/i && return 1;
} elsif ( $ptype eq 'pfs_group' ) {
$value =~ m/^(none|modp768|modp1024|modp1536|modp2048|modp3072|modp4096|modp6144|modp8192|1|2|5|14|15|16|17|18)$/i && return 1;
} elsif ( $ptype eq 'level') {
$value =~ m/^(default|use|require|unique)$/i && return 1;
} elsif ( $ptype eq 'log') {
$value =~ m/^(notify|debug|debug2)$/i && return 1;
} elsif ( $ptype eq 'proposal_check' ) {
$value =~ m/^(obey|strict|claim|exact)$/i && return 1;
} elsif ( $ptype eq 'nat_traversal' ) {
$value =~ m/^(on|off|force)$/i && return 1;
} elsif ( $ptype eq 'policy' ) {
$value =~ m/^(discard|ipsec|none)$/i && return 1;
} elsif ( $ptype =~ 'nonce_size' ) {
$value =~ m/^[0-9]{1,3}$/ && $value >= 8 && $value <= 256 && return 1;
} elsif ( $ptype eq 'listen' ) {
if ( $value =~ m/^[0-9a-f:\.]+$/i ) {
return ip_check_syntax( $value );
}
if ( $value =~ m/^([0-9a-f:\.]+)\s+\[([0-9]{1,5})\]$/i ) {
my $ip = $1;
my $port = $2;
return 0 if ! ip_check_syntax ( $ip );
return 0 if $port !~ m/^[0-9]{1,5}$/;
return 1;
}
return 0;
} elsif ( $ptype eq 'shell_command' ) {
if ( $value =~ m/^"?([\S]+)\s+.*"?$/i ) {
if ( ! -x $1 ) {
prog_warn 'err', "$property - cannot execute $1";
return 0;
}
return 1;
}
return 0;
} elsif ( $ptype eq 'path_conf_file' ) {
if ( $value =~ m/^\"?([^\"\s]+)\"?$/i ) {
if ( ! -r $1 ) {
prog_warn 0, "$property - cannot read file $1";
return 0;
}
return 1;
}
return 0;
} elsif ( $ptype eq 'path_generated_file' ) {
if ( $value =~ m/^\"?([^\"\s]+)\"?$/i ) {
my $dir = dirname($1);
if ( ! defined $dir || $dir == '' ) {
prog_warn 0, "$property - directory does not exist";
return 0;
}
if ( ! -r $dir ) {
prog_warn 0, "$property - cannot access directory $dir";
return 0;
}
return 1;
}
return 0;
} elsif ( $ptype eq 'path_certificate' ) {
if ( $value =~ m/^\"?([^\"\s]+)\"?$/i ) {
if ( ! -r $1 ) {
prog_warn 0, "$property - cannot read directory $1";
return 0;
}
return 1;
}
return 0;
} elsif ( $ptype eq 'peers_certfile' ){
# TODO - do we need do something extra for plain_rsa?
$value =~ m/^(dnssec|plain_rsa)$/i && return 1;
if ( $value =~ m/^x509\s+\"?([^\"\s]+)\"?\s*$/i ) {
if (-r "$global{'path_certificate'}/$1") {
return 1;
} else {
prog_warn 0, "$property - cannot read $global{'path_certificate'}/$1";
return 0;
}
}
return 0;
} elsif ( $ptype eq 'certificate' ) {
if ( $value =~ m/^x509\s+\"?([^\"\s]+)\"?\s+\"?([^\"\s]+)\"?\s*$/i ) {
if ( ! -r "$global{'path_certificate'}/$1" ) {
prog_warn 0, "$property - cannot read $global{'path_certificate'}/$1";
return 0;
}
if ( ! -r "$global{'path_certificate'}/$2" ) {
prog_warn 0, "$property - cannot read $global{'path_certificate'}/$2";
return 0;
}
return 1;
}
return 0;
} elsif ( $ptype eq 'identifier' ) {
if ( $value =~ m/^address\s*$/i ) {
return 1;
}
if ( $value =~ m/^address\s+([0-9a-f:\.]+)\s*$/i ) {
local $ip = $1;
return ip_check_syntax($ip);
}
if ( $value =~ m/^fqdn\s+"?([-a-z0-9\._]+)"?\s*$/i ) {
return 1;
}
if ( $value =~ m/^user_fqdn\s+"?([-a-z0-9\.\@_]+)"?\s*$/i ) {
return 1;
}
if ( $value =~ m/^asn1dn\s+"?([-a-z0-9\.\@_\s\\\/='\[\]]+)"?\s*$/i ) {
return 1;
}
if ( $value =~ m/^asn1dn\s*$/i ) {
return 1;
}
if ( $value =~ m/^keyid\s+\"?(\/[^\"\s]+)\"?$/i ) {
if ( -r $1 ) {
return 1;
} else {
prog_warn 0, "$property - cannot read $1";
return 0;
}
}
return 0;
} elsif ( $ptype eq 'upperspec' ) {
if ( ($protoname, $protoaliases, $protonumber )
= getprotobyname $value ) {
return 1;
}
$value =~ m/^(any|icmp6)$/i && return 1;
if ( $value =~ m/^icmp6[ \t]+([0-9]{1,3})$/i ) {
return 1 if ( $1 >= 0 && $1 <= 255 );
}
if ( $value =~ m/^icmp6[ \t]+([0-9]{1,3}),([0-9]{1,3})$/i ) {
return 1 if ( $1 >= 0 && $1 <= 255 && $2 >= 0 && $2 <= 255 );
}
if ( $value =~ m/[0-9]{1,5}/ && $value > 0 && $value <= 65535 ) {
return 1;
}
return 0
} elsif ( $ptype eq 'ip' ) {
return ip_check_syntax($value);
} elsif ( $ptype eq 'port' ) {
my $port;
if ( $port = getservbyname ($value, '' )) {
return 1;
}
if ($value =~ m/^\[?(any|[0-9]{1,5})\]?$/i ) {
$port = $1;
} else {
return 0;
}
if ( $port ne 'any' ) {
return 0 if ( $port < 0 || $port > 65535 );
}
return 1;
} elsif ( $ptype eq 'range' ) {
my $valid = 1;
my ($ip, $mask, $port, $type);
# make sure we have only 1 slash;
return 0 if $value =~ m/^.*\/.*\/.*$/;
# Split range into address, mask and port
if ( $value !~ m/^.*\[(any|[0-9]{1,5})\]$/i ) {
$value .= "[any]";
}
if ( $value =~ m/^(.*)\/([0-9]{1,5})\[(any|[0-9]{1,5})\]$/i ) {
$ip = $1;
$mask = $2;
$port = $3;
} elsif ( $value =~ m/^(.*)\[(any|[0-9]{1,5})\]$/i ) {
$ip = $1;
$mask = 255;
$port = $2;
} elsif ( $value =~ m/^(.*)$/i ) {
$ip = $1;
$mask = 255;
$port = 'any';
} else {
return 0;
}
# Work out type of IP address
if ( $ip =~ m/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/ ) {
$type = 'ipv4';
} elsif ( $ip =~ m/^::$|^[0-9a-f]{1,4}:[0-9a-f:]*:[0-9a-f]{0,4}$/i ) {
$type = 'ipv6';
} else {
return 0;
}
# Check IP address
if ( ! ip_check_syntax($ip) && $ip ne '::' ) {
$valid = 0;
}
# Check mask
if ( $mask != 255 ) {
if ( $type eq 'ipv4') {
$valid = 0 if ( $mask < 0 || $mask > 32 );
} else {
$valid = 0 if ( $mask < 0 || $mask > 128 );
}
}
# Check port
if ( $port ne 'any' ) {
$valid = 0 if ( $port < 0 || $port > 65535 );
}
return $valid;
}
else {
return 0;
}
return 0;
}
# Check for required parameters for activation
sub conn_check_required () {
foreach my $connection ( keys %connection_list ) {
my $makelive = 1;
my $chndl = $connection_list{$connection};
next if $connection eq '%default';
if ( $connection ne '%anonymous' ) {
foreach my $property ( @conn_required_props ) {
$makelive = 0 if ! defined $chndl->{$property};
}
# Check that address families of src_range and dst_range match
my $src_range_iptype = $chndl->{'src_range_iptype'};
my $dst_range_iptype = $chndl->{'dst_range_iptype'};
if ($src_range_iptype ne $dst_range_iptype) {
prog_warn 0, "$connection - src_range '${src_range_iptype}' does not match dst_range '${dst_range_iptype}'.";
$makelive = 0;
}
# Check that address families of dst_ip and src_ip match
my $src_ip_iptype = $chndl->{'src_ip_iptype'};
my $dst_ip_iptype = $chndl->{'dst_ip_iptype'};
if ($src_ip_iptype ne $dst_ip_iptype) {
prog_warn 0, "$connection - src_ip '${src_ip_iptype}' does not match dst_ip '${dst_ip_iptype}'.";
$makelive = 0;
}
# check peer
my $dst_ip = $chndl->{'dst_ip'};
if ( ! defined $dst_ip
|| ! defined $peer_list{$dst_ip}
|| ! defined $peer_list{$dst_ip}{'makelive'}
|| $peer_list{$dst_ip}{'makelive'} == 0 ) {
$makelive = 0;
}
}
$makelive = 0 if ( $chndl->{'syntax_error'} );
if (! $makelive) {
prog_warn 0, "$connection - required parameters missing, peer missing or syntax error.";
prog_warn 0, "$connection - not activating.";
$chndl->{'makelive'} = 0;
next;
}
$chndl->{'makelive'} = 1;
}
}
# Translate /etc/services name to port
sub getportnum($) {
my $port = shift;
my $value;
if ($port =~ m/^(any|\[any\])$/ ) {
return $port;
}
if ($value = getservbyname( $port, '')){
return $value;
}
return $port;
}
# Fill in default missing parameters
sub conn_fillin_defaults () {
foreach my $connection ( keys %connection_list ) {
next if $connection eq '%default';
my $chndl = $connection_list{$connection};
foreach my $property ( keys %{ $connection_list{'%default'} } ) {
if ( ! defined $chndl->{$property} ) {
$chndl->{$property} = $connection_list{'%default'}{$property};
}
}
next if ! defined $chndl->{'src_ip'};
next if ! defined $chndl->{'dst_ip'};
# Set up default values for range and ID if they do not exist already
foreach my $p ( 'src', 'dst' ) {
if ( ! defined $chndl->{"${p}_range"} ) {
$chndl->{"${p}_range"}
= $chndl->{"${p}_ip"};
}
if ( $chndl->{"${p}_range"}
!~ m/^.*\[(any|[0-9]{1,5})\]$/ ) {
$chndl->{"${p}_range"} .= "[any]";
}
# Remove full length netmasks to avoid confusing things...
if ($chndl->{"${p}_range"} =~ m/^[0-9]{1,3}\./) {
$chndl->{"${p}_range"} =~ s/\/32//;
$chndl->{"${p}_range_iptype"} = 'ip4';
} elsif ($chndl->{"${p}_range"} =~ m/^([0-9a-f]{1,4}:|::)/) {
$chndl->{"${p}_range"} =~ s/\/128//;
$chndl->{"${p}_range_iptype"} = 'ip6';
}
# Record IP types if dst_ip and src_ip
if ($chndl->{"${p}_ip"} =~ m/^[0-9]{1,3}\./) {
$chndl->{"${p}_ip_iptype"} = 'ip4';
} elsif ($chndl->{"${p}_ip"} =~ m/^([0-9a-f]{1,4}:|::)/) {
$chndl->{"${p}_ip_iptype"} = 'ip6';
}
}
# Work out IDs for use with racoon configuration
# Remove any port information as racoon sees it as duplicate sainfo...
my $local_id = $chndl->{'src_range'};
$local_id =~ m/^(\S+)(\[(any|[0-9]{1,5}|[-0-9a-z]+)\])$/;
my $src_port = $2;
$local_id = $1;
$chndl->{'local_id'} = $local_id;
$chndl->{'src_subnet'} = $local_id;
$chndl->{'src_port'} = getportnum($src_port);
my $remote_id = $chndl->{'dst_range'};
$remote_id =~ m/^(\S+)(\[(any|[0-9]{1,5}|[-0-9a-z]+)\])$/;
my $dst_port = $2;
$remote_id = $1;
$chndl->{'remote_id'} = $remote_id;
$chndl->{'dst_subnet'} = $remote_id;
$chndl->{'dst_port'} = getportnum($dst_port);
# Set the mode appropriately if not already set
if ( !defined $chndl->{'mode'} ) {
if ( $chndl->{'src_range'}
eq $chndl->{'src_ip'} . "[any]"
&& $chndl->{'dst_range'}
eq $chndl->{'dst_ip'} . "[any]" ) {
$chndl->{'mode'} = 'transport';
} else {
$chndl->{'mode'} = 'tunnel';
}
}
# Deal with SPD port rules
my $pindexes = $chndl->{'pindexes'} ;
# Work out if this is a multi SPD connection
if ( ! scalar(@$pindexes)) {
$chndl->{'multi_spd'} = 0;
next;
}
$chndl->{'multi_spd'} = 1;
foreach my $ind ( @$pindexes ) {
# fill in missing ports, and add missing '[]'s
foreach my $p ( 'src', 'dst' ) {
my $pname = "${p}_port" . "[${ind}]";
$chndl->{$pname} = '[any]' if ( ! defined $chndl->{$pname} );
$chndl->{$pname} = getportnum($chndl->{$pname});
$chndl->{$pname} =~ s/^(any|[0-9]{1,5})$/[${1}]/;
$chndl->{"${p}_range[${ind}]"} = $chndl->{"${p}_subnet"} . $chndl->{"${p}_port[${ind}]"};
}
foreach my $p ( 'level', 'encap', 'policy' ) {
my $pname = "${p}" . "[${ind}]";
$chndl->{$pname} = $chndl->{$p} if ( ! defined $chndl->{$pname} );
}
}
}
}
sub prop_get_indexes (\%) {
my $hndl = shift;
my %tmp;
my @keys = keys %$hndl;
@keys = grep /^.*\[[-_0-9a-z]+\]$/, @keys;
map { s/^.*\[([-_0-9a-z]+)\]$/$1/; } @keys;
$tmp{$_} = 1 foreach (@keys);
@keys = reverse (sort (keys (%tmp)));
return @keys;
}
sub prop_store_index (\%$) {
my $hndl = shift;
my $property = shift;
if ( ! defined $hndl->{'pindexes'} ) {
$hndl->{'pindexes'} = [];
}
if ($property =~ m/^\S+\[([-_0-9a-z]+)\]$/) {
$pindex = $1;
return if ( grep { $_ eq $pindex} @{ $hndl->{'pindexes'}});
push @{ $hndl->{'pindexes'} }, $pindex;
}
}
sub peer_fillin_defaults () {
# Copy default to defined peers
my $dhndl = $peer_list{'%default'};
foreach my $peer ( keys %peer_list ) {
next if $peer eq '%default';
my $phndl = $peer_list{$peer};
foreach my $property ( keys %{ $dhndl } ) {
if ( ! defined $phndl->{$property} ) {
$phndl->{$property} = $dhndl->{$property};
}
}
}
foreach my $peer ( keys %peer_list ) {
my $phndl = $peer_list{$peer};
# Fill in all proposals...
my $pindexes = $phndl->{'pindexes'};
foreach my $property ( grep { $_ = $1 if /^(.*)\[[-_0-9a-z]+\]$/; } keys %$dhndl ) {
foreach my $ind ( @$pindexes ) {
next if $peer eq '%default' && $ind == 0;
my $name = "$property" . '[' . "$ind" . "]";
my $dname = "$property" . '[0]';
if ( ! defined $phndl->{"$name"} ) {
$phndl->{"$name"} = $dhndl->{"$dname"}
}
}
}
}
# If a peer does not exist, create it from %default
my @peers = keys %peer_list;
foreach my $connection ( keys %connection_list ) {
next if $connection eq '%default';
my $conn_hndl = $connection_list{$connection};
next if ! defined $conn_hndl->{'dst_ip'};
my $ip_addr = $conn_hndl->{'dst_ip'};
next if grep { $ip_addr eq $_ } @peers;
foreach my $element ( keys %{ $peer_list{'%default'} } ) {
$peer_list{$ip_addr}{$element} = $peer_list{'%default'}{$element};
}
}
# fill in dst_ip property if not already done...
foreach my $peer ( keys %peer_list ) {
next if $peer eq '%default';
$peer_list{$peer}{'dst_ip'} = $peer;
}
# Fix up missing " ...
foreach my $peer ( keys %peer_list ) {
my $phndl = $peer_list{$peer};
foreach my $prop ( 'my_identifier', 'peers_identifier', 'certificate_type', 'peers_certfile') {
my $ptype = get_proptype('peer', "$prop");
next if ! defined $phndl->{"$prop"};
my $value = $phndl->{"$prop"};
if ( $ptype eq 'peers_certfile' ){
next if $value =~ m/^dnssec$/i;
if ( $value =~ m/^(x509|plain_rsa)\s+\"?(\S+)\"?\s*$/i ) {
$phndl->{"$prop"} = "$1" . ' "' . "$2" . '"';
}
} elsif ( $ptype eq 'certificate' ) {
if ( $value =~ m/^x509\s+\"?(\S+)\"?\s+\"?(\S+)\"?\s*$/ ) {
$phndl->{"$prop"} = "x509 " . '"' . $1 . '" "' . $2 . '"';
}
} elsif ( $ptype eq 'identifier' ) {
next if $value =~ m/^address\s*$/i;
next if $value =~ m/^asn1dn\s*$/i;
if ( $value =~ m/^address\s+([0-9a-f:\.]+)\s*$/i ) {
$phndl->{"$prop"} = "address $1";
}
if ( $value =~ m/^fqdn\s+"?([-a-z0-9\._]+)"?\s*$/i ) {
$phndl->{"$prop"} = "fqdn " . '"' . $1 . '"';
}
if ( $value =~ m/^user_fqdn\s+"?([-a-z0-9\.\@_]+)"?\s*$/i ) {
$phndl->{"$prop"} = "user_fqdn " . '"' . $1 . '"';
}
if ( $value =~ m/^asn1dn\s+"?([-a-z0-9\.\@_\s\\\/='\[\]]+)"?\s*$/i ) {
$phndl->{"$prop"} = "asn1dn " . '"' . $1 . '"';
}
if ( $value =~ m/^keyid\s+"?(\/\S+)"?$/i ) {
$phndl->{"$prop"} = "keyid " . '"' . $1 . '"';
}
}
}
}
}
sub peer_check_required () {
# For now, every peer has required values...
PEER: foreach my $peer ( keys %peer_list ) {
my $makelive = 1;
next PEER if $peer eq '%default';
$makelive = 0 if ( $peer_list{$peer}{'syntax_error'} );
if (! $makelive) {
prog_warn 0, "$peer - required parameters missing or syntax error.";
prog_warn 0, "$peer - not activating.";
$peer_list{$peer}{'makelive'} = 0;
next PEER;
}
$peer_list{$peer}{'makelive'} = 1;
}
}
# print connection output
sub global_dump_list () {
print "global: ";
foreach my $prop ( keys %global ) {
print "$prop=$global{$prop} ";
}
print "\n";
}
sub peer_dump_list () {
foreach my $peer ( keys %peer_list ) {
print "$peer: ";
foreach my $property ( keys %{ $peer_list{$peer} } ) {
print "$property=$peer_list{$peer}{$property} ";
}
print "\n";
}
}
sub conn_dump_list () {
foreach my $connection ( keys %connection_list ) {
print "$connection: ";
foreach my $property ( keys %{ $connection_list{$connection} } ) {
print "$property=$connection_list{$connection}{$property} ";
}
print "\n";
}
}
# setup the kernel
sub setkey_start () {
# Flush and reinit kernel
sadspd_reset();
# Load all peers
}
sub setkey_stop () {
# Flush kernel
spd_flush();
sad_flush();
}
# Reset SAD and SPD
sub spd_reset () {
spd_flush ();
spd_init ();
}
sub sad_reset () {
sad_flush ();
sad_init ();
}
# Fill in spdadd command
sub spd_fill_add ($) {
my $connection = shift;
my $stuff;
my $hndl = $connection_list{$connection};
$stuff = $spdadd{$$hndl{'spdadd_template'}};
# We only do interesting things on %default templates
if ($hndl->{'spdadd_template'} eq '%default') {
my $pindexes = $hndl->{'pindexes'};
my $multi_spd = scalar( @$pindexes );
if ($multi_spd > 0) {
if ($hndl->{'src_range_iptype'} eq 'ip4') {
$stuff = $spdadd_ip4_header;
} elsif ($hndl->{'src_range_iptype'} eq 'ip6') {
$stuff = $spdadd_ip6_header;
}
# Build multi SPD template
foreach my $ind ( @$pindexes ) {
my $to_add;
my $pname = "policy[${ind}]";
if ($hndl->{$pname} eq 'ipsec') {
$to_add = $spdadd_default;
} else {
$to_add = $spdadd_alternate_policy;
}
$to_add =~ s/___(encap|level|policy|src_range|dst_range)___/___$1\[$ind\]___/gm;
$stuff .= $to_add;
}
} else {
# Original non-multi SPD template action
# Use transport template if needed
if ($hndl->{'mode'} eq 'transport'
&& $hndl->{'upperspec'} eq 'any'
&& $hndl->{'src_range'} =~ m/^.*\[any\]$/
&& $hndl->{'dst_range'} =~ m/^.*\[any\]$/) {
if ($hndl->{'src_range_iptype'} eq 'ip4') {
$stuff = $spdadd{'%transport_ip4_default'};
} elsif ($hndl->{'src_range_iptype'} eq 'ip6') {
$stuff = $spdadd{'%transport_ip6_default'};
}
}
}
#
# Do fill in AH header if asked for.
if ($hndl->{'encap'} eq 'esp'
&& ($hndl->{'mode'} eq 'transport'
&& $bool_val{"$hndl->{'auto_ah_on_esp'}"} != 0
|| $bool_val{"$hndl->{'always_ah_on_esp'}"} != 0)) {
$stuff =~ s/^(\s*spdadd.*out ipsec\s*\n.*);$/${1}\n${spdadd_addons{'ah_out'}};/mg;
$stuff =~ s/^(\s*spdadd.*in ipsec\s*\n.*);$/${1}\n${spdadd_addons{'ah_in'}};/mg;
}
#
# Do fill in values for compression
if (defined $hndl->{'compression'}
&& $bool_val{"$hndl->{'compression'}"} != 0) {
$stuff =~ s/^(\s*spdadd.*out ipsec\s*)$/${1}\n${spdadd_addons{'ipcomp_out'}}/mg;
$stuff =~ s/^(\s*spdadd.*in ipsec\s*)$/${1}\n${spdadd_addons{'ipcomp_in'}}/mg;
}
}
foreach my $key (keys %$hndl) {
my $key_reg = $key;
$key_reg =~ s/\[/\\[/g;
$key_reg =~ s/\]/\\]/g;
$stuff =~ s/___${key_reg}___/$$hndl{"$key"}/img;
}
#
# spd priority only supported on Linux kernels
if (($^O !~ /linux/i) && ($hndl->{'spdadd_template'} eq '%default') ) {
$stuff =~ s/^(\s*spdadd.*(in|out))\s+prio.*(ipsec|discard;|none;)$/${1} ${3}/mg;
}
return $stuff;
}
# Load the SPD
sub spd_load (;$) {
my $conn = shift;
my $setkey_buffer = '';
my @conns = ();
my @spd_list;
my %conn_spd_hash;
parse_spd(@spd_list, %conn_spd_hash);
if ( defined $conn ) {
return 0 if ( ! grep /^${conn}$/, (keys %connection_list) );
return -1 if ( ! $connection_list{$conn}{'makelive'} );
return -2 if ( grep /^${conn}$/, keys %conn_spd_hash );
@conns = ( $conn );
} else {
@conns = keys %connection_list;
}
open ( SETKEY, '|-' )
|| exec ("$setkey_cmd -f /dev/stdin 2>&1 | $0 -l" );
for my $connection ( @conns ) {
next if $connection eq '%default';
next if $connection eq '%anonymous';
next if grep /^${connection}$/, keys %conn_spd_hash;
my $hndl = $connection_list{$connection};
next if ! $$hndl{'makelive'};
next if ! $bool_val{$$hndl{'admin_status'}};
my $stuff = spd_fill_add ($connection);
$setkey_buffer .= $stuff. "\n";
print SETKEY <<"EOF";
$stuff
EOF
}
close SETKEY;
my $err = $?;
if ( $err ) {
my $i = 1;
foreach my $line ( split /^/m, $setkey_buffer ) {
chomp $line;
prog_warn 0, "setkey input: $i $line";
$i++;
}
prog_die "loading SPD failed - exit code " . ($err >> 8);
}
sleep($quiesce) if ($quiesce > 0);
return 1;
}
# Initialise the SPD
sub spd_init() {
open ( SETKEY, '|-' )
|| exec ($setkey_cmd, '-f', '/dev/stdin');
$spdinit = '' if ! defined $spdinit;
print SETKEY <<"EOF";
spdflush;
$spdinit
EOF
close SETKEY or prog_die "initialising SPD failed - exit code " . ($? >> 8);
sleep($quiesce) if ($quiesce > 0);
return 1;
}
# Initialise the SAD
sub sad_init() {
open ( SETKEY, '|-' )
|| exec ($setkey_cmd, '-f', '/dev/stdin');
$sadinit = '' if ! defined $sadinit;
print SETKEY <<"EOF";
$sadinit
EOF
close SETKEY or prog_die "initialising SPD failed - exit code " . ($? >> 8);
sleep($quiesce) if ($quiesce > 0);
return 1;
}
# Flush the SAD
sub sad_flush () {
setkey_flush('SAD');
}
# Flush the SPD
sub spd_flush() {
setkey_flush('SPD');
}
sub setkey_flush ($) {
my $table = shift;
my $cleanret = 0;
my $arg = "";
if ( $table =~ /SAD/ ) {
$arg = "";
}
elsif ( $table =~ /SPD/ ) {
$arg = "-P";
} else {
prog_die "setkey_flush() - wrong arg $table";
}
open ( SETKEY, '-|' )
|| exec ("$setkey_cmd $arg -F 2>&1");
while ( <SETKEY> ) {
if ( m/pfkey_open: Address family not supported by protocol/ ) {
$cleanret = 1;
next;
}
chomp;
prog_warn 0, "setkey said: $_";
# print "$_\n";
}
close SETKEY;
prog_die ("flushing $table failed - exit code " . ($? >> 8))
if ( $? && ! $cleanret);
sleep($quiesce) if ($quiesce > 0);
return 0
}
sub spd_show () {
setkey_show('SPD');
}
sub sad_show () {
setkey_show('SAD');
}
sub setkey_show ($) {
my $table = shift;
my $cleanret = 0;
my $arg = "";
if ( $table =~ /SAD/ ) {
$arg = "";
}
elsif ( $table =~ /SPD/ ) {
$arg = "-P";
} else {
prog_die "setkey_show() - wrong arg $table";
}
system ("$setkey_cmd $arg -D | $pager_cmd @pager_flags");
return 0
}
sub mod_start () {
# Only do this if on linux
return 0 if ($^O !~ /linux/i);
print "Loading IPSEC/crypto modules...\n";
# Load cryptographic modules
mod_start_crypto ();
# Load xfrm and af_key
mod_load "$modpath_xfrm/xfrm_user${modext}";
mod_load "$modpath_key/af_key${modext}";
# Load IPv4 IPSEC
mod_start_ipsec ();
# Load IPv6 IPSEC
mod_start_ipsec6 ();
print "IPSEC/crypto modules loaded.\n";
prog_warn 'info', "loaded IPSEC/crypto modules.";
return 0;
}
sub mod_stop () {
# Only do this if on linux
return 0 if ($^O !~ /linux/i);
print "Unloading IPSEC/crypto modules...\n";
# Unload crypto modules
mod_stop_crypto ();
# Unload xfrm and af_key
mod_unload "$modpath_xfrm/xfrm_user${modext}";
mod_unload "$modpath_key/af_key${modext}";
# Unload IPv4 IPSEC
mod_stop_ipsec ();
# Unload IPv6 IPSEC
mod_stop_ipsec6 ();
print "IPSEC/crypto modules unloaded.\n";
prog_warn 'info', "unloaded IPSEC/crypto modules";
return 0;
}
sub mod_start_ipsec6 () {
return 0 if ! -d $proc_ipv6;
for my $mod ( @modules_ipsec6 ) {
mod_load "${modpath_ipsec6}/${mod}${modext}";
}
return 0;
}
sub mod_stop_ipsec6 () {
for my $mod ( @modules_ipsec6 ) {
mod_unload $mod;
}
return 0;
}
sub mod_start_ipsec () {
return 0 if ! -d $proc_ipv4;
for my $mod ( @modules_ipsec ) {
mod_load "${modpath_ipsec}/${mod}${modext}";
}
return 0;
}
sub mod_stop_ipsec () {
for my $mod ( @modules_ipsec ) {
mod_unload $mod;
}
return 0;
}
sub mod_start_crypto () {
local @modfiles;
return 0 if ( ! -d $modpath_crypto );
# Load zlib_deflate if present
mod_load "$modpath_zlib/zlib_deflate${modext}";
opendir DIR, $modpath_crypto or prog_die "$modpath_crypto - $!";
@modfiles = grep /${modext}$/, readdir DIR;
closedir DIR;
for my $mod ( @modfiles ) {
next if ( $mod =~ /tcrypt${modext}$/ );
mod_load "$modpath_crypto/$mod";
}
return 0
}
sub mod_stop_crypto () {
local @modfiles;
return 0 if ( ! -d $modpath_crypto );
opendir DIR, $modpath_crypto or prog_die "$modpath_crypto - $!";
@modfiles = grep /${modext}$/, readdir DIR;
closedir DIR;
for my $mod ( @modfiles ) {
mod_unload $mod;
}
# Unload zlib_deflate if present
mod_unload "$modpath_zlib/zlib_deflate${modext}";
return 0
}
sub mod_load ($) {
local $modtoload = shift;
local $modname;
# Check that kernel supports modules
return 1 if ( ! -f $proc_modules );
return 1 if ( ! -f $modtoload );
return 1 if ( ! -f "/sbin/modprobe" );
$modname = basename("$modtoload", "$modext");
if ( ! grep /^${modname}$/, @modules ) {
system ( "/sbin/modprobe $modname" );
}
return 0
}
sub mod_unload ($) {
my $modname = shift;
$modname = basename("$modname", "$modext");
if ( ! grep /^${modname}$/, @modules ) {
return 0;
}
system ( "/sbin/modprobe -r $modname > /dev/null 2>&1" );
return 0;
}
sub mod_ls () {
local $module;
# Only do this if on linux
return 0 if ($^O !~ /linux/i);
if (@modules > 0) {
return 0
}
# Check that kernel supports modules
if ( ! -f $proc_modules ) {
return 1;
}
open MOD, "<$proc_modules";
while ($module = <MOD>) {
chomp $module;
next if ($module =~ /^Module\s+Size/);
$module =~ s/^([a-zA-Z0-9_\-]+)\s+.*$/$1/;
push @modules, $module;
}
close MOD;
return 0;
}
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