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Adjusting fail2ban logwatch script to match lines from 0.9 as well

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File itself includes additional log information about changes
pull/782/head
Yaroslav Halchenko 10 years ago
parent 7e902a1320
commit b0f26fa391
1 changed files with 54 additions and 32 deletions
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86
3rdparty/logwatch/fail2ban vendored
Unescape View File

@ -3,6 +3,12 @@
# $Id: fail2ban 150 2013-06-18 22:19:38Z mtremaine $
##########################################################################
# $Log: fail2ban,v $
#
# Revision 1.6 2014/08/11 16:07:46 yoh
# Patches from Yaroslav Halchenko to match adjusted in 0.9.x lines.
# Also reports now total number of hits (matches) along with Ban:Unban
# and relaxed regular expressions for matching any log level
#
# Revision 1.5 2008/08/18 16:07:46 mike
# Patches from Paul Gear <paul at libertysys.com> -mgt
#
@ -46,8 +52,8 @@ my $Detail = $ENV{'LOGWATCH_DETAIL_LEVEL'} || 0;
my $IgnoreHost = $ENV{'sshd_ignore_host'} || "";
my $DebugCounter = 0;
my $ReInitializations = 0;
my @IptablesErrors = ();
my @ActionErrors = ();
my @ActionsErrors = ();
my @CommandsErrors = ();
my $NotValidIP = 0; # reported invalid IPs number
my @OtherList = ();
@ -66,40 +72,55 @@ while (defined(my $ThisLine = <STDIN>)) {
chomp($ThisLine);
if ( ($ThisLine =~ /..,... DEBUG: /) or
($ThisLine =~ /..,... \S*\s*: DEBUG /) or # syntax of 0.7.? fail2ban
($ThisLine =~ /..,... INFO: (Fail2Ban v.* is running|Exiting|Enabled sections:)/) or
($ThisLine =~ /INFO\s+Log rotation detected for/) or
($ThisLine =~ /INFO\s+Jail.+(?:stopped|started|uses poller)/) or
($ThisLine =~ /INFO\s+Changed logging target to/) or
($ThisLine =~ /INFO\s+Creating new jail/) or
($ThisLine =~ /..,... \S+: (Fail2Ban v.* is running|Exiting|Enabled sections:)/) or
($ThisLine =~ /\S+\s+rollover performed on/) or
($ThisLine =~ /\S+\s+Connected to .* persistent database/) or
($ThisLine =~ /\S+\s+Jail '.*' uses .*/) or
($ThisLine =~ /\S+\s+Initiated '.*' backend/) or
($ThisLine =~ /\S+\s+Jail .* is not a JournalFilter instance/) or
($ThisLine =~ /\S+\s+Log rotation detected for/) or
($ThisLine =~ /\S+\s+Jail.+(?:stopped|started|uses poller)/) or
($ThisLine =~ /\S+\s+Changed logging target to/) or
($ThisLine =~ /\S+\s+Creating new jail/) or
($ThisLine =~ /..,... \S+\s*: INFO\s+(Set |Socket|Exiting|Gamin|Created|Added|Using)/) or # syntax of 0.7.? fail2ban
($ThisLine =~ /..,... WARNING: Verbose level is /) or
($ThisLine =~ /..,... WARNING: Restoring firewall rules/)
($ThisLine =~ /..,... \S+: Verbose level is /) or
($ThisLine =~ /..,... \S+: Restoring firewall rules/)
)
{
if ( $Debug >= 6 ) {
print STDERR "DEBUG($DebugCounter): line ignored\n";
}
} elsif ( my ($Service,$Action,$Host) = ($ThisLine =~ m/WARNING:?\s\[?(.*?)[]:]?\s(Ban|Unban)[^\.]* (\S+)/)) {
} elsif ( my ($LogLevel,$Service,$Action,$Host) = ($ThisLine =~ m/(WARNING|NOTICE):?\s+\[?(.*?)[]:]?\s(Ban|Unban)[^\.]* (\S+)/)) {
if ( $Debug >= 6 ) {
print STDERR "DEBUG($DebugCounter): Found $Action for $Service from $Host\n";
}
$ServicesBans{$Service}{$Host}{$Action}++;
$ServicesBans{$Service}{"(all)"}{$Action}++;
} elsif ( my ($Service,$Host,$NumFailures) = ($ThisLine =~ m/INFO: (\S+): (.+) has (\d+) login failure\(s\). Banned./)) {
} elsif ( my ($LogLevel,$Service,$Host) = ($ThisLine =~ m/(INFO|WARNING|NOTICE):?\s+\[?(.*?)[]:]?\sFound[^\.]* (\S+)/)) {
if ( $Debug >= 6 ) {
print STDERR "DEBUG($DebugCounter): Found hit for $Service from $Host\n";
}
$ServicesBans{$Service}{$Host}{"Hit"}++;
$ServicesBans{$Service}{"(all)"}{"Hit"}++;
} elsif ( my ($Service,$Host,$NumFailures) = ($ThisLine =~ m/\S+:\s+(\S+): (.+) has (\d+) login failure\(s\). Banned./)) {
if ($Debug >= 4) {
print STDERR "DEBUG: Found host $Host trying to access $Service - failed $NumFailures times\n";
}
push @{$ServicesBans{$Service}{$Host}{'Failures'}}, $NumFailures;
} elsif ( my ($Service,$Host) = ($ThisLine =~ m/ ERROR:\s(.*):\s(\S+)\salready in ban list/)) {
$ServicesBans{$Service}{$Host}{'AlreadyInTheList'}++;
} elsif ( my ($Service,$Host) = ($ThisLine =~ m/WARNING\s*\[(.*)\]\s*(\S+)\s*already banned/)) {
} elsif ( my ($Service,$Host) = ($ThisLine =~ m/ \S+:\s(.*):\s(\S+)\salready in ban list/)) {
$ServicesBans{$Service}{$Host}{'AlreadyInTheList'}++;
} elsif ( my ($Service,$Host) = ($ThisLine =~ m/\S+\s*\[(.*)\]\s*(\S+)\s*already banned/)) {
$ServicesBans{$Service}{$Host}{'AlreadyInTheList'}++;
} elsif ( my ($Service,$Host) = ($ThisLine =~ m/ WARNING:\s(.*):\sReBan (\S+)/)) {
} elsif ( my ($Service,$Host) = ($ThisLine =~ m/ \S+:\s(.*):\sReBan (\S+)/)) {
$ServicesBans{$Service}{$Host}{'ReBan'}++;
} elsif ($ThisLine =~ / ERROR:?\s*(Execution of command )?\'?iptables/) {
push @IptablesErrors, "$ThisLine\n";
push @ActionsErrors, "$ThisLine\n";
} elsif ($ThisLine =~ / ERROR\s*Failed to execute.*action/) {
push @ActionsErrors, "$ThisLine\n";
} elsif ($ThisLine =~ / WARNING Command \[.*\] has failed. Received/) {
push @CommandsErrors, "$ThisLine\n";
} elsif ($ThisLine =~ /ERROR.*returned \d+$/) {
push @ActionErrors, "$ThisLine\n";
push @ActionsErrors, "$ThisLine\n";
} elsif (($ThisLine =~ /..,... WARNING: \#\S+ reinitialization of firewalls/) or
($ThisLine =~ / ERROR\s*Invariant check failed. Trying to restore a sane environment/)) {
$ReInitializations++;
@ -117,20 +138,22 @@ while (defined(my $ThisLine = <STDIN>)) {
if (keys %ServicesBans) {
printf("\nBanned services with Fail2Ban: Bans:Unbans\n");
printf("\nBanned services with Fail2Ban: Bans:Unbans:Hits\n");
foreach my $service (sort {$a cmp $b} keys %ServicesBans) {
printf(" %-55s [%3d:%-3d]\n", "$service:",
printf(" %-55s [%3d:%d:%-3d]\n", "$service:",
$ServicesBans{$service}{'(all)'}{'Ban'},
$ServicesBans{$service}{'(all)'}{'Unban'});
$ServicesBans{$service}{'(all)'}{'Unban'},
$ServicesBans{$service}{'(all)'}{'Hit'});
delete $ServicesBans{$service}{'(all)'};
my $totalSort = TotalCountOrder(%{$ServicesBans{$service}}, \&SortIP);
if ($Detail >= 5) {
foreach my $ip (sort $totalSort keys %{$ServicesBans{$service}}) {
my $name = LookupIP($ip);
printf(" %-53s %3d:%-3d\n",
printf(" %-53s %3d:%d:%-3d\n",
$name,
$ServicesBans{$service}{$ip}{'Ban'},
$ServicesBans{$service}{$ip}{'Unban'});
$ServicesBans{$service}{$ip}{'Unban'},
$ServicesBans{$service}{$ip}{'Hit'});
if (($Detail >= 10) and ($ServicesBans{$service}{$ip}{'Failures'}>0)) {
print " Failed ";
foreach my $fails (@{$ServicesBans{$service}{$ip}{'Failures'}}) {
@ -146,21 +169,20 @@ if (keys %ServicesBans) {
}
}
if ($Detail>0) {
if ($#IptablesErrors > 0) {
printf("\n%d faulty iptables invocation(s)", $#IptablesErrors);
if ($#ActionsErrors >= 0) {
printf("\n%d faulty action invocation(s)", $#ActionsErrors+1);
if ($Detail > 5) {
print ":\n";
print @IptablesErrors ;
print @ActionsErrors ;
}
}
if ($#ActionErrors > 0) {
printf("\n%d error(s) returned from actions", $#ActionErrors);
if ($Detail > 5) {
print ":\n";
print @ActionErrors ;
}
if ($#CommandsErrors >= 0) {
printf("\n%d faulty command invocation(s) from client(s)", $#CommandsErrors+1);
if ($Detail > 5) {
print ":\n";
print @CommandsErrors ;
}
}
if ($ReInitializations > 0) {
printf("\n%d fail2ban rules reinitialization(s)", $ReInitializations);

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