X-Git-Url: https://code.th-h.de/?p=mail%2Fcheckmail.git;a=blobdiff_plain;f=checkmail.pl;h=c8f9e911c484f410978af9a56e9290e55f61d752;hp=f6cf417dce0ef80321cc0b13be68804124a432f3;hb=ea5d225aa40f7a9017e459c08a99ac6a17261ac4;hpb=9fc0e927760e5b4ba173ac738b4793172e96152d diff --git a/checkmail.pl b/checkmail.pl index f6cf417..c8f9e91 100644 --- a/checkmail.pl +++ b/checkmail.pl @@ -1,6 +1,6 @@ #! /usr/bin/perl -W # -# checkmail Version 0.3 by Thomas Hochstein +# checkmail Version 0.5 by Thomas Hochstein # # This script tries to verify the deliverability of (a) mail address(es). # @@ -9,7 +9,7 @@ # It can be redistributed and/or modified under the same terms under # which Perl itself is published. -our $VERSION = "0.3"; +our $VERSION = "0.5"; ################################# Configuration ################################ # Please fill in a working configuration! @@ -24,6 +24,7 @@ my %config=( use strict; use File::Basename; use Getopt::Std; +use Mail::Address; use Net::DNS; use Net::SMTP; @@ -34,7 +35,7 @@ my $myself = basename($0); # read commandline options my %options; -getopts('Vhqlrf:m:', \%options); +getopts('Vhqlrf:m:s:e:', \%options); # -V: display version if ($options{'V'}) { @@ -51,18 +52,24 @@ if ($options{'h'}) { # display usage information if neither -f nor an address are present if (!$options{'f'} and !$ARGV[0]) { - print "Usage: $myself [-hqlr] [-m ]
|-f \n"; + print "Usage: $myself [-hqlr] [-m ] [-s ] [-e ]
|-f \n"; print "Options: -V display copyright and version\n"; print " -h show documentation\n"; print " -q quiet (no output, just exit with 0/1/2/3)\n"; print " -l extended logging\n"; print " -r test random address to verify verification\n"; print " -m no DNS lookup, just test this host\n"; + print " -s override configured value for MAIL FROM\n"; + print " -e override configured value for EHLO\n"; print "
mail address to check\n\n"; print " -f parse file (one address per line)\n"; exit(100); }; +# -s / -e: override configuration +$config{'from'} = $options{'s'} if $options{'s'}; +$config{'helo'} = $options{'e'} if $options{'e'}; + # -f: open file and read addresses to @adresses my @addresses; if ($options{'f'}) { @@ -85,28 +92,35 @@ if ($options{'f'}) { my (%targets,$curstat,$status,$log,$message); foreach (@addresses) { my $address = $_; - (undef,my $domain) = splitaddress($address); - printf(" * Testing %s ...\n",$address) if !($options{'q'}); - $log .= "\n===== BEGIN $address =====\n"; - # get list of target hosts or take host forced via -m - if (!$options{'m'}) { - %targets = %{gettargets($domain,\$log)}; - } else { - $message = sprintf("Connection to %s forced by -m.\n",$options{'m'}); - $log .= $message; - print " $message" if !($options{'q'}); - # just one target host with preference 0 - $targets{$options{'m'}} = 0; - }; - if (%targets) { - $curstat = checkaddress($address,\%targets,\$log); - } else { + # regexp taken from http://www.regular-expressions.info/email.html + # and escaping of "/" added two times + if ($address !~ /^(?:[a-z0-9!#$%&'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?$/i) { + printf(" > Address <%s> is syntactically INVALID.\n",$address) if !($options{'q'}); $curstat = 2; - $message = 'DNS lookup failure'; - printf(" > Address is INVALID (%s).\n",$message) if !($options{'q'}); - $log .= $message . '.'; + } else { + my $domain = Mail::Address->new('',$address)->host; + printf(" * Testing %s ...\n",$address) if !($options{'q'}); + $log .= "\n===== BEGIN $address =====\n"; + # get list of target hosts or take host forced via -m + if (!$options{'m'}) { + %targets = %{gettargets($domain,\$log)}; + } else { + $message = sprintf("Connection to %s forced by -m.\n",$options{'m'}); + $log .= $message; + print " $message" if !($options{'q'}); + # just one target host with preference 0 + $targets{$options{'m'}} = 0; + }; + if (%targets) { + $curstat = checkaddress($address,\%targets,\$log); + } else { + $curstat = 2; + $message = 'DNS lookup failure'; + printf(" > Address is INVALID (%s).\n",$message) if !($options{'q'}); + $log .= $message . '.'; + }; + $log .= "====== END $address ======\n"; }; - $log .= "====== END $address ======\n"; $status = $curstat if (!defined($status) or $curstat > $status); }; @@ -205,8 +219,7 @@ sub checksmtp { } elsif ($success) { # -r: try random address (which should be guaranteed to be invalid) if ($options{'r'}) { - (undef,my $domain) = splitaddress($address); - my ($success,$code,@message) = try_rcpt_to(\$smtp,create_rand_addr($domain),$logr); + my ($success,$code,@message) = try_rcpt_to(\$smtp,create_rand_addr(Mail::Address->new('',$address)->host),$logr); # connection failure? if ($success < 0) { $status = connection_failed(@message); @@ -239,18 +252,6 @@ sub checksmtp { return $status; } -################################# splitaddress ################################# -# split mail address into local and domain part -# IN : $address: a mail address -# OUT: $local : local part -# $domain: domain part -sub splitaddress { - my($address)=@_; - (my $lp = $address) =~ s/^([^@]+)@.*/$1/; - (my $domain = $address) =~ s/[^@]+\@(\S*)$/$1/; - return ($lp,$domain); -}; - ############################### create_rand_addr ############################### # create a random mail address # IN : $domain: the domain part @@ -381,7 +382,7 @@ checkmail - check deliverability of a mail address =head1 SYNOPSIS -B [B<-Vhqlr>] [B<-m> I] I
|B<-f> I +B [B<-Vhqlr>] [B<-m> I] [-s I] [-e I] I
|B<-f> I =head1 REQUIREMENTS @@ -401,6 +402,10 @@ Getopt::Std =item - +Mail::Address I<(CPAN)> + +=item - + Net::DNS I<(CPAN)> =item - @@ -434,13 +439,17 @@ The sender address to be used for I while testing. =back +You may override that configuration by using the B<-e> and B<-s> +command line options. + =head2 Usage After configuring the script you may run your first test with checkmail user@example.org -B will try to determine the mail exchanger(s) (MX) +B will check the address for syntactic validity. If the +address is valid, it will try to determine the mail exchanger(s) (MX) responsible for I by querying the DNS for the respective MX records and then try to connect via SMTP (on port 25) to each of them in order of precedence (if necessary). It will run through the @@ -513,6 +522,9 @@ B You shouldn't try to validate addresses while working from a dial-up or blacklisted host. If in doubt, use the B<-l> option to have a closer look on the SMTP dialog yourself. +B To avoid shell expansion on addresses you submit to +B, use B. + =head1 OPTIONS =over 3 @@ -545,6 +557,14 @@ particular host irrespective of DNS entries. For example: checkmail -m test.host.example user@domain.example +=item B<-s> I (value for MAIL FROM) + +Override configuration and use I for MAIL FROM. + +=item B<-e> I (value for EHLO) + +Override configuration and use I for EHLO. + =item B<-f> I (file) Process all addresses from I (one on each line).