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harden snmp request (Fix #880)

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garnier-quentin 2019-01-10 09:45:10 +01:00
parent c07b2e9e78
commit f58cd01486
1 changed files with 14 additions and 1 deletions
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15
centreon-plugins/centreon/plugins/snmp.pm
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@ -324,6 +324,19 @@ sub get_leef {
return undef; return undef;
} }
# Some equipments gives a partial response and no error.
# We look the last value if it's empty or not
if (scalar(@$vb) && (scalar(@{@$vb[-1]}) < 3)) {
next if ($self->{snmp_autoreduce} == 1 && $self->autoreduce_leef(current => $entry) == 0);
if ($dont_quit == 0) {
$self->{output}->add_option_msg(short_msg => "SNMP partial response. Please try --snmp-autoreduce option");
$self->{output}->option_exit(exit_litteral => "SNMP partial response");
}
$self->set_error(error_status => -1, error_msg => $msg);
return undef;
}
foreach my $entry (@$vb) { foreach my $entry (@$vb) {
if ($#$entry < 3) { if ($#$entry < 3) {
# Can be snmpv1 not find # Can be snmpv1 not find
@ -661,7 +674,6 @@ sub set {
# 2 noSuchName Variable inexistante. # 2 noSuchName Variable inexistante.
my $msg = 'SNMP SET Request : ' . $self->{session}->{ErrorStr}; my $msg = 'SNMP SET Request : ' . $self->{session}->{ErrorStr};
if ($dont_quit == 0) { if ($dont_quit == 0) {
$self->{output}->add_option_msg(short_msg => $msg); $self->{output}->add_option_msg(short_msg => $msg);
$self->{output}->option_exit(exit_litteral => $self->{snmp_errors_exit}); $self->{output}->option_exit(exit_litteral => $self->{snmp_errors_exit});
@ -729,6 +741,7 @@ sub check_options {
$self->{subsetleef} = (defined($options{option_results}->{subsetleef}) && $options{option_results}->{subsetleef} =~ /^[0-9]+$/) ? $options{option_results}->{subsetleef} : 50; $self->{subsetleef} = (defined($options{option_results}->{subsetleef}) && $options{option_results}->{subsetleef} =~ /^[0-9]+$/) ? $options{option_results}->{subsetleef} : 50;
$self->{subsettable} = (defined($options{option_results}->{subsettable}) && $options{option_results}->{subsettable} =~ /^[0-9]+$/) ? $options{option_results}->{subsettable} : 100; $self->{subsettable} = (defined($options{option_results}->{subsettable}) && $options{option_results}->{subsettable} =~ /^[0-9]+$/) ? $options{option_results}->{subsettable} : 100;
$self->{snmp_errors_exit} = $options{option_results}->{snmp_errors_exit}; $self->{snmp_errors_exit} = $options{option_results}->{snmp_errors_exit};
$self->{snmp_autoreduce} = 0;
$self->{snmp_autoreduce_divisor} = 2; $self->{snmp_autoreduce_divisor} = 2;
if (defined($options{option_results}->{snmp_autoreduce})) { if (defined($options{option_results}->{snmp_autoreduce})) {
$self->{snmp_autoreduce} = 1; $self->{snmp_autoreduce} = 1;