/[cricket]/parse_wifi.pl
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /parse_wifi.pl

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Revision 1.2 - (show annotations)
Sun May 18 02:08:41 2003 UTC (16 years, 3 months ago) by dpavlin
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +5 -4 lines
File MIME type: text/plain
configuration parametars

1 #!/usr/bin/perl -w
2 #
3 # cricket module which creates configuration file (when called with
4 # apropriate option), re-reads configuration (so that it can report
5 # filesystems in same order always)
6 #
7 # Dobrica Pavlinusic <dpavlin@rot13.org>
8 # http://www.rot13.org/~dpavlin/sysadm.html
9 #
10 # Usage:
11 #
12 # parse_wifi.pl "ssh -i ~cricket/.ssh/wifi target.host" /mount_point
13 # ssh into remote host and get data for /mount_point
14 #
15 # parse_wifi.pl "ssh -i ~cricket/.ssh/wifi target.host" --config
16 # dump configuration file to stdout
17 #
18
19 use strict;
20
21 my $ssh = shift @ARGV || "";
22 my $dev = shift @ARGV;
23
24 # do we have Cache::FileCache installed?
25
26 my $USE_CACHE = 0;
27 eval("use Cache::FileCache;");
28 if (! $@) { $USE_CACHE = 1; }
29
30 my $wifi;
31 my @labels;
32
33 my $cache = new Cache::FileCache() if ($USE_CACHE);
34
35 if ($USE_CACHE) {
36 print STDERR " [using cache] ";
37 $wifi = $cache->get( $ssh );
38 return if (defined $wifi);
39 print STDERR " [cache miss] ";
40 }
41 eval {
42 local $SIG{ALRM} = sub { die "ssh timeout\n"; };
43 alarm 10; # wait for ssh to connect and return first line
44 open(DF,"$ssh cat /proc/net/wireless /proc/net/dev |") || die "$ssh wifi: $!";
45 };
46 while(<DF>) {
47 chomp;
48 s/\|//g; # remove | delimiters
49 my @arr = split(/[\s:]+/,$_);
50 shift @arr; # dump first element -- empty one
51
52 # store labels
53 if ($arr[0] eq "face") {
54 shift @arr;
55 push (@labels,@arr);
56 }
57
58 if ($#arr == 10) { # /proc/net/wireless
59 if (! $dev && $arr[0]) {
60 $dev = $arr[0];
61 }
62 if ($dev && $arr[0] eq $dev) {
63 shift @arr;
64 push @{$wifi->{$dev}},@arr;
65 }
66 } elsif ($#arr == 16 && $arr[0] eq $dev) { # /proc/net/dev
67 shift @arr;
68 push @{$wifi->{$dev}},@arr;
69 }
70 }
71 close(DF);
72 alarm 0; # turn alarm off
73 $cache->set( $ssh, $wifi, "1 min" ) if ($USE_CACHE);
74
75 # dump
76 for(my $i=0; $i <= ($#labels+1); $i++) {
77 # print $labels[$i]," [$i] : ";
78 my $val = $wifi->{$dev}[$i];
79 $val =~ s/\.$//g; # kill trailing dot
80 print $val || 0;
81 print "\n";
82 }
83

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