Send mail with attachment using only SMTP

[Mad Ant]

Hello fellow Monks.

I need to write a script which checks maintenance for a program running on a distant machine. I have limited rights on this machine, so no installing various CPAN modules.

The mail needs to be sent with data in the mail body, and the same data in a CSV file that will be sent as an attachment.
I thought I had it down pat, but the mail sends, and their is an attachment, but it is almost empty, unreadable file.

Could someone please tell me where I'm going wrong ? Any help is much appreciated.

Here's the code refering to the CSV file :

#!/usr/bin/perl

use strict;
use DBI;
use Net::SMTP;
use utf8;

my @addr_to_send = qw/[e-mail]/;
my $from_addr = '[e-mail]';
my $smtp_addr = 'smtp.skynet.be';
my $csvfile = "appelerr.csv";

... # gets info from a database, creates a CSV file

foreach my $to_send (@addr_to_send) {
print "Sending mail to $to_send\n";
my $smtp = Net::SMTP->new($smtp_addr);
$smtp->mail($from_addr);
$smtp->to($to_send);
$smtp->data();
$smtp->datasend("Subject: Appels S+ erronés");
$smtp->datasend("\n");
$smtp->datasend("MIME-Version: 1.0\n");
$smtp->datasend("Content-type: multipart/mixed;
boundary=\"frontier\"\n");
$smtp->datasend("--frontier\n");
$smtp->datasend("Content-type: text/plain\n");
$smtp->datasend("Explication sur cet e-mail :\n");
$smtp->datasend("Cet e-mail contient la liste des appels effectués par
+ les pensionnaires et qui ne se sont pas terminés normalement.\n");
$smtp->datasend("Il peut s'agir d'un moment où l'infirmière a pu résou
+dre les raisons de l'appel sans devoir appeler la chambre,\n");
$smtp->datasend("puis effectue un reset, ou que le pensionnaire, impat
+ient, sonne de manière répétitive,\n");
$smtp->datasend("mais cela peut également etre un temps de réponse bea
+ucoup trop long.\n\n");
if ($#badcalls < 0) {
$smtp->datasend("Aucun appel erroné n'a été détecté.\n");
} else {
for (sort @badcalls) {
print "Bad call in line : $_ : $dbtime$_ - $dbroomid$_ - $dbevent$_\n"
+;
$smtp->datasend("$dbtime$_ - numèro de local : $rooms{$dbroomid$_}\n")
+;
}

# THIS IS WHERE THE ATTACHMENT IS DONE
$smtp->datasend("--frontier\n");
$smtp->datasend("Content-Disposition: attachment; filename=\"$csvfile\
+"\n");
$smtp->datasend("Content-Type: application/text; name= $csvfile ");
$smtp->datasend("\n");
open CSVFH, "< $csvfile";
while (<CSVFH>) { chomp; $smtp->datasend("$_\n"); }
close CSVFH;
}
$smtp->datasend("--frontier--\n");
$smtp->dataend();
$smtp->quit;
}

NB : the $_ that appear as links to other nodes should really just be '$_' but in between brackets.