lldpdiscover imported

2 files changed, 217 insertions, 0 deletions

diff --git a/include/FixedSNMP.pm b/include/FixedSNMP.pm
new file mode 100644
index 0000000..1ea3089
--- /dev/null
+++ b/include/FixedSNMP.pm
@@ -0,0 +1,125 @@
+# A bugfix to the gettable functions of SNMP.pm, that deals properly
+# with bulk responses being overridden. Original copyright:
+#
+#     Copyright (c) 1995-2006 G. S. Marzot. All rights reserved.
+#     This program is free software; you can redistribute it and/or
+#     modify it under the same terms as Perl itself.
+#
+# To use, just "use FixedSNMP;" and then use SNMP::Session as usual.
+
+use strict;
+use warnings;
+use SNMP;
+
+package FixedSNMP::Session;
+
+sub _gettable_do_it() {
+    my ($this, $vbl, $parse_indexes, $textnode, $state) = @_;
+
+    my ($res);
+
+    $vbl = $_[$#_] if ($state->{'options'}{'callback'});
+
+    my $num_vbls = scalar @$vbl;
+    my $num_stopconds = scalar @{$state->{'stopconds'}};
+
+    while ($num_vbls > 0 && !$this->{ErrorNum}) {
+        my @found_eof = (0) x $num_stopconds;
+
+	for (my $i = 0; $i <= $#$vbl; $i++) {
+	    my $row_oid = SNMP::translateObj($vbl->[$i][0]);
+	    my $row_text = $vbl->[$i][0];
+	    my $row_index = $vbl->[$i][1];
+	    my $row_value = $vbl->[$i][2];
+	    my $row_type = $vbl->[$i][3];
+
+            my $stopcond_num = $i % $num_stopconds;
+            my $stopcond = $state->{'stopconds'}[$stopcond_num];
+	    if ($row_oid !~ /^\Q$stopcond\E/ || $row_value eq 'ENDOFMIBVIEW') {
+                $found_eof[$stopcond_num] = 1;
+            } else {
+
+		if ($row_type eq "OBJECTID") {
+
+		    # If the value returned is an OID, translate this
+		    # back in to a textual OID
+
+		    $row_value = SNMP::translateObj($row_value);
+
+		}
+
+		# continue past this next time
+
+		$state->{'varbinds'}[$stopcond_num] = [ $row_text, $row_index ];
+
+		# Place the results in a hash
+
+		$state->{'result_hash'}{$row_index}{$row_text} = $row_value;
+	    }
+	}
+
+	my @newstopconds = ();
+        my @newvarbinds = ();
+        for (my $i = 0; $i < $num_stopconds; ++$i) {
+            unless ($found_eof[$i]) {
+                push @newstopconds, $state->{'stopconds'}[$i];
+                push @newvarbinds, $state->{'varbinds'}[$i];
+            }
+	}
+	if ($#newstopconds == -1) {
+	    last;
+	}
+	$state->{'varbinds'} = \@newvarbinds;
+	$state->{'stopconds'} = \@newstopconds;
+	$vbl = $state->{'varbinds'};
+        $num_vbls = scalar @newvarbinds;
+        $num_stopconds = scalar @newstopconds;
+
+        #
+        # if we've been configured with a callback, then call the
+        # sub-functions with a callback to our own "next" processing
+        # function (_gettable_do_it).  or else call the blocking method and
+        # call the next processing function ourself.
+        #
+	if ($state->{'options'}{'callback'}) {
+	    if ($this->{Version} ne '1' && !$state->{'options'}{'nogetbulk'}) {
+		$res = $this->getbulk(0, $state->{'repeatcount'}, $vbl,
+				      [\&_gettable_do_it, $this, $vbl,
+				       $parse_indexes, $textnode, $state]);
+	    } else {
+		$res = $this->getnext($vbl,
+				      [\&_gettable_do_it, $this, $vbl,
+				       $parse_indexes, $textnode, $state]);
+	    }
+	    return;
+	} else {
+	    if ($this->{Version} ne '1' && !$state->{'options'}{'nogetbulk'}) {
+		$res = $this->getbulk(0, $state->{'repeatcount'}, $vbl);
+	    } else {
+		$res = $this->getnext($vbl);
+	    }
+	}
+    }
+
+    # finish up
+    _gettable_end_routine($state, $parse_indexes, $textnode);
+
+    # return the hash if no callback was specified
+    if (!$state->{'options'}{'callback'}) {
+	return($state->{'result_hash'});
+    }
+
+    #
+    # if they provided a callback, call it
+    #   (if an array pass the args as well)
+    #
+    if (ref($state->{'options'}{'callback'}) eq 'ARRAY') {
+	my $code = shift @{$state->{'options'}{'callback'}};
+	$code->(@{$state->{'options'}{'callback'}}, $state->{'result_hash'});
+    } else {
+	$state->{'options'}{'callback'}->($state->{'result_hash'});
+    }
+}
+
+*FixedSNMP::Session::_gettable_end_routine = *SNMP::Session::_gettable_end_routine;
+*SNMP::Session::_gettable_do_it = *FixedSNMP::Session::_gettable_do_it;
diff --git a/include/nms/snmp.pm b/include/nms/snmp.pm
new file mode 100644
index 0000000..b0fe725
--- /dev/null
+++ b/include/nms/snmp.pm
@@ -0,0 +1,92 @@
+#! /usr/bin/perl
+use strict;
+use warnings;
+use SNMP;
+use nms;
+package nms::snmp;
+
+use base 'Exporter';
+our @EXPORT = qw();
+
+BEGIN {
+	# $SNMP::debugging = 1;
+
+	# sudo mkdir /usr/share/mibs/site
+	# cd /usr/share/mibs/site
+	# wget -O- ftp://ftp.cisco.com/pub/mibs/v2/v2.tar.gz | sudo tar --strip-components=3 -zxvvf -
+	SNMP::initMib();
+	SNMP::addMibDirs("/opt/gondul/mibs/StandardMibs");
+	SNMP::addMibDirs("/opt/gondul/mibs/JuniperMibs");
+	SNMP::addMibDirs("/opt/gondul/mibs/CiscoMibs");
+	
+	SNMP::loadModules('SNMPv2-MIB');
+	SNMP::loadModules('ENTITY-MIB');
+	SNMP::loadModules('IF-MIB');
+	SNMP::loadModules('LLDP-MIB');
+	SNMP::loadModules('IP-MIB');
+	SNMP::loadModules('IP-FORWARD-MIB');
+}
+
+sub snmp_open_session {
+	my ($ip, $community, $async) = @_;
+
+	$async //= 0;
+
+	my %options = (UseEnums => 1);
+	if ($ip =~ /:/) {
+		$options{'DestHost'} = "udp6:$ip";
+	} else {
+		$options{'DestHost'} = "udp:$ip";
+	}
+
+	if ($community =~ /^snmpv3:(.*)$/) {
+		my ($username, $authprotocol, $authpassword, $privprotocol, $privpassword) = split /\//, $1;
+
+		$options{'SecName'} = $username;
+		$options{'SecLevel'} = 'authNoPriv';
+		$options{'AuthProto'} = $authprotocol;
+		$options{'AuthPass'} = $authpassword;
+
+		if (defined($privprotocol) && defined($privpassword)) {
+			$options{'SecLevel'} = 'authPriv';
+			$options{'PrivProto'} = $privprotocol;
+			$options{'PrivPass'} = $privpassword;
+		}
+
+		$options{'Version'} = 3;
+	} else {
+		$options{'Community'} = $community;
+		$options{'Version'} = 2;
+	}
+
+	my $session = SNMP::Session->new(%options);
+	if (defined($session) && ($async || defined($session->getnext('sysDescr')))) {
+		return $session;
+	} else {
+		die 'Could not open SNMP session to ' . $ip;
+	}
+}
+
+# Not currently in use; kept around for reference.
+sub fetch_multi_snmp {
+	my ($session, @oids) = @_;
+
+	my %results = ();
+
+	# Do bulk reads of 40 and 40; seems to be about the right size for 1500-byte packets.
+	for (my $i = 0; $i < scalar @oids; $i += 40) {
+		my $end = $i + 39;
+		$end = $#oids if ($end > $#oids);
+		my @oid_slice = @oids[$i..$end];
+
+		my $localresults = $session->get_request(-varbindlist => \@oid_slice);
+		return undef if (!defined($localresults));
+
+		while (my ($key, $value) = each %$localresults) {
+			$results{$key} = $value;
+		}
+	}
+
+	return \%results;
+}
+1;