greg wrote:
> ps -- the goal is a little "blame" script for e-mail that tells you how
> long a given message spent moving from A to B. (this relies, of course,
> on globally synchronized clocks, but that seems much more likely to be
> true today than it did when Received: lines were first introduced.)
Oh, why didn't you say so. :-) Don't know if he's still on the list,
but I cribbed this from Chris Garrigues many many years ago. Takes a
raw message on stdin.
paul
#!/usr/bin/perl -w
#
# mailroute by Chris Garrigues <c...@deepeddy.com>
#
# Reads an email message on stdin and pretty prints the contents of the
# recieved headers.
#
# When given an email message as it's argument will parse out the received
# headers and display the route it took to get to you and the times it
# arrived at each of the locations in your local timezone.
#
# It also tries to be clever in how it displays things: (1) It only shows
# what changed in the date/time rather than the entire date/time each time.
# (2) It breaks the line before the keywords "from", "by", and "with"
# unless they appear in comments.
# Changes by Mikko H�nninen <mikko.hanni...@iki.fi>
#
# - match non-numeric timezones, as well as more liberal number checking
# - allow for two digit years as well as four digits (actually, any number
# of digits)
# - also display Delivered-To: lines amidst Received: information
# - timezone conversion works even with timezones like +0745
# - somewhat prettier output (split at by/with/from) for non-recognised
# date lines
# - print time difference from first entry
# - print time different always, even if it's the same as previous time
# (so you can see where each hop is)
# - added "id" and "for" to keywords before which a linebreak is added
# - print date information on a separate line, so there's no need to reserve
# columns for it on every line
# - print malformed received lines (cannot parse date) "as-is" with no
# offset
use Time::Local;
# Global variable for date parsing
%mon = ('jan' => 0,
'feb' => 1,
'mar' => 2,
'apr' => 3,
'may' => 4,
'jun' => 5,
'jul' => 6,
'aug' => 7,
'sep' => 8,
'oct' => 9,
'nov' => 10,
'dec' => 11);
# Initialize some variables to keep -w quiet
($owd, $om, $od, $ot, $oy) = ("", "", "", "", "");
# Perl trim function to remove whitespace from the start and end of the string
sub trim($)
{
my $string = shift;
$string =~ s/^\s+//;
$string =~ s/\s+$//;
return $string;
}
# Read the headers into $_
($_ = "\n" . join("", <>)) =~ s/\n\n.*$//sg;
# Parse the contents of the received headers into an array
@rec = ();
while (/\n(received|delivered-to):(.*?)(\n\S)/gis) {
unshift(@rec, "$1:$2");
# print "Adding $1: $2\n";
$_ = "$3$'";
}
#while (/\nreceived:(.*?)(\n\S)/gis) {
# unshift(@rec, $1);
# print "Adding Received: $1\n";
# $_ = "$2$'";
#}
for (@rec) {
if (/^delivered-to:/i) {
s/^delivered-to://i; # strip Delivered-To:
s/\s+/ /gs;
s/^\s+//;
print " Delivered-To: $_\n";
}
else {
s/^received://i; # strip Received:
s/\s+/ /gs;
# Format is "information; date"
($line, $date) = /^\s*(.*?)\s*;\s*(.*?)$/;
if (!$date) {
# no date, must be malformed? simscan will produce these
# just print it out and go to next
print " ", trim($_), "\n";
next;
}
$date =~ s/\(.*\)//g;
$date =~ s/\s+/ /gs;
# Parse the sucker
if ($date =~ /(\d+) (jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)
(\d+) (\d+):(\d\d):(\d\d) ([+-]?\d+|\w+)/i) {
# Coerce the date into something we can give to timegm
$d = $1;
($m = $2) =~ tr/A-Z/a-z/;
$y = $3;
$h = $4;
$mi = $5;
$s = $6;
$tz = $7;
if ($tz =~ /[+-]?\d+/) { ($zs, $zh, $zm) = $tz =~
/^([-+])(\d\d)(\d\d)$/; }
else { $zs = "+"; $zh = $zm = 0; } # word tz def, assume GMT
$m = $mon{$m};
if ($y > 1900) { $y -= 1900; } elsif ($y < 70) { $y += 100; } # Y2K fix
if ($zs eq "+") { $zs = 1; } else { $zs = -1; }
$ts = timegm($s, $mi, $h, $d, $m, $y) -
$zs * ($zh*60*60 + $zm*60);
$begints = $ts unless ($begints);
($wd, $m, $d, $t, $y) = split(' ', localtime($ts));
$d = " $d" if ($d < 10);
# Insert line breaks
$line =~ s/\b(by|with|from|id|for)\b/\n $1/g;
# But take them back out if they're in a comment
while ($line =~ s/\(([^()]*?)\s\s+?(.*?)\)/\($1 $2\)/gs) {};
$line =~ s/\( /\(/g;
$line =~ s/^\s*//s;
# Figure out what parts of the date we want to display
($pwd, $pm, $pd, $pt, $py) = ($wd, $m, $d, $t, $y);
$pwd = "" if ($wd eq $owd);
$pm = "" if ($d eq $od);
#$pm = "" if ($m eq $om);
$pd = "" if ($d eq $od);
$pt = " " if ($t eq $ot); # comment this out to always print
time
$py = "" if ($y eq $oy);
$offs = $ts - $begints;
if ($offs >= 0) { $off_sign = '+'; } else { $off_sign = '-'; $offs *=
-1; }
$off_s = $offs % 60;
$off_m = int($offs / 60) % 60;
$off_h = int($offs / 3600) % 24;
if ($offs > 60*60*24) { $off_d = int($offs / (60*60*24)); } else {
$off_d = ""; }
$poffs = sprintf("%s%02d:%02d:%02d%s", $off_sign, $off_h, $off_m,
$off_s, $off_d ? "+" . $off_d . "d" : "");
print "$pwd $pd $pm $py\n" if ($py || $pm || $pd || $pwd);
print "$pt $poffs $line\n";
#print "$pwd $pm $pd $py $pt $poffs $line\n";
($owd, $om, $od, $ot, $oy) = ($wd, $m, $d, $t, $y);
#$prevts = $ts;
} else {
# bail...
$date =~ s/\b(by|with|from|using|id|for)\b/\n $1/g;
$line =~ s/\b(by|with|from|using|id|for)\b/\n $1/g;
printf ("%17s %s\n", $date, $line);
#print "$date $line\n";
}
}
}
=----------------------
paul fox, p...@foxharp.boston.ma.us (arlington, ma, where it's 29.8 degrees)
