mirror of https://github.com/aredn/aredn.git
87 lines
2.6 KiB
Perl
Executable File
87 lines
2.6 KiB
Perl
Executable File
#!/usr/bin/perl
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=for comment
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Part of AREDN -- Used for creating Amateur Radio Emergency Data Networks
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Copyright (C) 2015 Conrad Lara
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See Contributors file for additional contributors
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Copyright (c) 2013 David Rivenburg et al. BroadBand-HamNet
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation version 3 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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Additional Terms:
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Additional use restrictions exist on the AREDN(TM) trademark and logo.
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See AREDNLicense.txt for more info.
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Attributions to the AREDN Project must be retained in the source code.
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If importing this code into a new or existing project attribution
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to the AREDN project must be added to the source code.
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You must not misrepresent the origin of the material contained within.
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Modified versions must be modified to attribute to the original source
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and be marked in reasonable ways as differentiate it from the original
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version.
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=cut
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# do nothing if olsrd is not running
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exit if system "ps | grep -v grep | grep -q 'olsrd '";
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($uptime) = `cat /proc/uptime` =~ /^(\d+)/;
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# load the hosts file
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foreach(`cat /var/run/hosts_olsr 2>/dev/null`)
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{
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next unless /^\d/;
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($ip, $name, undef, $originator, $mid) = split /\s+/, $_;
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next unless $originator;
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next if $originator eq "myself";
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next unless ($ip eq $originator) or (defined $mid and $mid eq "(mid");
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if($hosts{$ip}) { $hosts{$ip} .= "/$name" }
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else { $hosts{$ip} = $name }
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}
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# find the current neighbors
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foreach(`echo /lin | nc 127.0.0.1 2006 2>/dev/null`)
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{
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next unless /^\d/;
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(undef, $ip) = split /\s+/, $_;
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$history{$ip}{age} = $uptime;
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$history{$ip}{name} = $hosts{$ip};
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}
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exit unless keys %history;
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# load and strip the current history
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foreach(`cat /tmp/node.history 2>/dev/null`)
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{
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chomp;
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($ip, $age, $name) = split / /, $_;
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next unless $age;
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next if $history{$ip};
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next if $uptime - $age > 86400;
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$name = "" unless $name;
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$history{$ip}{age} = $age;
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$history{$ip}{name} = $name;
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}
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# write the new history
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open(FILE, ">/tmp/node.history") or exit;
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foreach $ip (keys %history)
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{
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printf FILE "%s %s %s\n", $ip, $history{$ip}{age}, $history{$ip}{name};
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}
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close(FILE);
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