I use a counter script that is being called by a Flash File (SWF).
The script writes the count to a file;
and if the parameter 'rubrik' is passed via CGI, it also writes to another file that counts the hits in that 'rubrik' (category) seperately.
Every 100 hits, a mail is sent to me.
A mail shall also be sent if there was an error.

The original script did no file locking, this one does. Still, for some reason the counter is reset to zero from time to time.
I get the notification every 100 hits, but I never get a mail stating an error.
After reading all docs and faqs related to CGI, I found no explanation. Here is the code:


#!/usr/bin/perl
use CGI;
use Fcntl qw(:DEFAULT :flock);

$mailprog  = '/usr/sbin/sendmail';
$recipient = 'info@active-websight.de';
$appname   = 'playcounter';
 
$query = new CGI;
$rubrik=$query->param('rubrik');

$countfile="gespielt-gesamt.txt";
$bereich="insgesamt";
&countIt;

if ($rubrik ne "") {
 $countfile="gespielt--$rubrik.txt";
 $bereich="in der Rubrik $rubrik";
 &countIt;
}
exit(0);

##############

sub countIt {

sysopen(FH, "$countfile", O_RDWR | O_CREAT) or &fehler;
# autoflush FH
$ofh = select(FH); $| = 1; select ($ofh);
flock(FH, LOCK_EX) or &fehler;    # Dateizugriff anfordern
$zahl = <FH> || 0;
$zahl++;
seek(FH, 0, 0) or &fehler;
print FH $zahl, "\n" or &fehler;
truncate(FH, tell(FH)) or &fehler;
close(FH) or &fehler;

if (($zahl/100)==int($zahl/100) and $zahl>99) { &nachricht;}
}

################

sub nachricht {

$betreff="$zahl Puzzles gespielt $bereich";
if ($fehler ne "") {$betreff="FEHLERMELDUNG !!!";}

open(MAIL,"|$mailprog -t") or goto NOMAIL;
print MAIL "To: $recipient\n";
print MAIL "From: info\@puzzleme.de ($appname)\n";
print MAIL "Subject: $betreff\n";
print MAIL "$appname meldet:\n\n";
print MAIL "$betreff.\n";
if ($fehler ne "") {print MAIL "$fehler\n";}

close (MAIL);
NOMAIL:
}
################

sub fehler {

$fehler="Fehler ($!) beim Schreiben von $countfile";
&nachricht;
exit(0);
}
################

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In reply to CGI counter resets for no obvious reason by fraktalisman

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