1 | #!/usr/bin/perl |
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2 | |
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3 | use strict; |
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4 | use IO::File; |
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5 | use IO::Pipe; |
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6 | use Getopt::Long; |
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7 | |
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8 | my $TMCC = "/usr/local/etc/emulab/tmcc"; |
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9 | my $FINDIF = "/usr/local/etc/emulab/findif"; |
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10 | my $IFCONFIG = "/sbin/ifconfig"; |
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11 | my $ROUTE = "/sbin/route"; |
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12 | |
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13 | my $tmcc = new IO::Pipe || die "Can't create tmcc pipe: $!\n"; |
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14 | my $interface; |
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15 | my $ip; |
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16 | my $mac; |
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17 | my $netmask ="255.255.255.0"; |
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18 | my $router; |
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19 | my $routedest; |
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20 | |
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21 | my $os = `uname`; |
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22 | chomp $os; |
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23 | |
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24 | GetOptions('destination=s' => \$routedest); |
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25 | |
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26 | $tmcc->reader("$TMCC tunnelip"); |
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27 | while (<$tmcc>) { |
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28 | chomp; |
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29 | /TUNNELIP=([\d\.]*)/ && do { $ip = $1; }; |
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30 | /TUNNELMASK=([\d\.]*)/ && do { $netmask = $1; }; |
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31 | /TUNNELMAC=([[:xdigit:]]*)/ && do { $mac = $1; }; |
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32 | /TUNNELROUTER=([\d\.]*)/ && do { $router = $1; }; |
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33 | } |
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34 | $tmcc->close(); |
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35 | |
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36 | die "No MAC information for tunnel.\n" unless $mac; |
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37 | |
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38 | $interface = `$FINDIF $mac`; |
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39 | chomp $interface; |
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40 | die "Can't get interface for mac address $mac: $?" if $? || !$interface; |
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41 | |
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42 | my @ifconfig = ($IFCONFIG, $interface, $ip); |
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43 | push(@ifconfig, 'netmask', $netmask) if $netmask; |
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44 | |
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45 | system(@ifconfig); |
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46 | die join(" ", @ifconfig) . " failed: $!\n" if $?; |
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47 | |
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48 | if ($routedest ) { |
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49 | if ($router) { |
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50 | my @cmd; |
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51 | |
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52 | if ( $os =~ /^Linux/ ) { |
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53 | @cmd = ($ROUTE, 'add', $routedest, 'gw', $router); |
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54 | } |
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55 | elsif ( $os =~ /^FreeBSD/ ) { |
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56 | @cmd = ($ROUTE, 'add', $routedest, $router); |
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57 | } |
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58 | else { |
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59 | die "Unknown OS: $os\n"; |
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60 | } |
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61 | system(@cmd); |
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62 | die join(" ", @cmd) . " failed: $?\n" if $?; |
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63 | } |
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64 | else { die "Destination but no router\n"; } |
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65 | } |
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66 | exit(0); |
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