sendEmail 78.3 KB
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#!/usr/bin/perl -w
##############################################################################
## sendEmail
## Written by: Brandon Zehm <caspian@dotconf.net>
##
## License:
##  sendEmail (hereafter referred to as "program") is free software;
##  you can redistribute it and/or modify it under the terms of the GNU General
##  Public License as published by the Free Software Foundation; either version
##  2 of the License, or (at your option) any later version.
##  When redistributing modified versions of this source code it is recommended
##  that that this disclaimer and the above coder's names are included in the
##  modified code.
##
## Disclaimer:
##  This program is provided with no warranty of any kind, either expressed or
##  implied.  It is the responsibility of the user (you) to fully research and
##  comprehend the usage of this program.  As with any tool, it can be misused,
##  either intentionally (you're a vandal) or unintentionally (you're a moron).
##  THE AUTHOR(S) IS(ARE) NOT RESPONSIBLE FOR ANYTHING YOU DO WITH THIS PROGRAM
##  or anything that happens because of your use (or misuse) of this program,
##  including but not limited to anything you, your lawyers, or anyone else
##  can dream up.  And now, a relevant quote directly from the GPL:
##
## NO WARRANTY
##
##  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
##  FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
##  OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
##  PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
##  OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
##  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
##  TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
##  PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
##  REPAIR OR CORRECTION.
##
##############################################################################
use strict;
use IO::Socket;


########################
##  Global Variables  ##
########################

my %conf = (
    ## General
    "programName"          => $0,                                  ## The name of this program
    "version"              => '1.56',                              ## The version of this program
    "authorName"           => 'Brandon Zehm',                      ## Author's Name
    "authorEmail"          => 'caspian@dotconf.net',               ## Author's Email Address
    "timezone"             => '+0000',                             ## We always use +0000 for the time zone
    "hostname"             => 'changeme',                          ## Used in printmsg() for all output (is updated later in the script).
    "debug"                => 0,                                   ## Default debug level
    "error"                => '',                                  ## Error messages will often be stored here
    
    ## Logging
    "stdout"               => 1,
    "logging"              => 0,                                   ## If this is true the printmsg function prints to the log file
    "logFile"              => '',                                  ## If this is specified (form the command line via -l) this file will be used for logging.
    
    ## Network
    "server"               => 'localhost',                         ## Default SMTP server
    "port"                 => 25,                                  ## Default port
    "bindaddr"             => '',                                  ## Default local bind address
    "alarm"                => '',                                  ## Default timeout for connects and reads, this gets set from $opt{'timeout'}
    "tls_client"           => 0,                                   ## If TLS is supported by the client (us)
    "tls_server"           => 0,                                   ## If TLS is supported by the remote SMTP server
    
    ## Email
    "delimiter"            => "----MIME delimiter for sendEmail-"  ## MIME Delimiter
                              . rand(1000000),                     ## Add some randomness to the delimiter
    "Message-ID"           => rand(1000000) . "-sendEmail",        ## Message-ID for email header
    
);


## This hash stores the options passed on the command line via the -o option.
my %opt = (
    ## Addressing
    "reply-to"             => '',                                  ## Reply-To field
    
    ## Message
    "message-file"         => '',                                  ## File to read message body from
    "message-header"       => '',                                  ## Additional email header line(s)
    "message-format"       => 'normal',                            ## If "raw" is specified the message is sent unmodified
    "message-charset"      => 'iso-8859-1',                        ## Message character-set
    "message-content-type" => 'auto',                              ## auto, text, html or an actual string to put into the content-type header.
    
    ## Network
    "timeout"              => 60,                                  ## Default timeout for connects and reads, this is copied to $conf{'alarm'} later.
    "fqdn"                 => 'changeme',                          ## FQDN of this machine, used during SMTP communication (is updated later in the script).
    
    ## eSMTP
    "username"             => '',                                  ## Username used in SMTP Auth
    "password"             => '',                                  ## Password used in SMTP Auth
    "tls"                  => 'auto',                              ## Enable or disable TLS support.  Options: auto, yes, no
    
);

## More variables used later in the program
my $SERVER;
my $CRLF        = "\015\012";
my $subject     = '';
my $header      = '';
my $message     = '';
my $from        = '';
my @to          = ();
my @cc          = ();
my @bcc         = ();
my @attachments = ();
my @attachments_names = ();

## For printing colors to the console
my ${colorRed}    = "\033[31;1m";
my ${colorGreen}  = "\033[32;1m";
my ${colorCyan}   = "\033[36;1m";
my ${colorWhite}  = "\033[37;1m";
my ${colorNormal} = "\033[m";
my ${colorBold}   = "\033[1m";
my ${colorNoBold} = "\033[0m";

## Don't use shell escape codes on Windows systems
if ($^O =~ /win/i) {
    ${colorRed} = ${colorGreen} = ${colorCyan} = ${colorWhite} = ${colorNormal} = ${colorBold} = ${colorNoBold} = "";
}

## Load IO::Socket::SSL if it's available
eval    { require IO::Socket::SSL; };
if ($@) { $conf{'tls_client'} = 0; }
else    { $conf{'tls_client'} = 1; }






#############################
##                          ##
##      FUNCTIONS            ##
##                          ##
#############################





###############################################################################################
##  Function: initialize ()
##  
##  Does all the script startup jibberish.
##  
###############################################################################################
sub initialize {

    ## Set STDOUT to flush immediatly after each print  
    $| = 1;
    
    ## Intercept signals
    $SIG{'QUIT'}  = sub { quit("EXITING: Received SIG$_[0]", 1); };
    $SIG{'INT'}   = sub { quit("EXITING: Received SIG$_[0]", 1); };
    $SIG{'KILL'}  = sub { quit("EXITING: Received SIG$_[0]", 1); };
    $SIG{'TERM'}  = sub { quit("EXITING: Received SIG$_[0]", 1); };
  
    ## ALARM and HUP signals are not supported in Win32
    unless ($^O =~ /win/i) {
        $SIG{'HUP'}   = sub { quit("EXITING: Received SIG$_[0]", 1); };
        $SIG{'ALRM'}  = sub { quit("EXITING: Received SIG$_[0]", 1); };
    }
    
    ## Fixup $conf{'programName'}
    $conf{'programName'} =~ s/(.)*[\/,\\]//;
    $0 = $conf{'programName'} . " " . join(" ", @ARGV);
    
    ## Fixup $conf{'hostname'} and $opt{'fqdn'}
    if ($opt{'fqdn'} eq 'changeme') { $opt{'fqdn'} = get_hostname(1); }
    if ($conf{'hostname'} eq 'changeme') { $conf{'hostname'} = $opt{'fqdn'}; $conf{'hostname'} =~ s/\..*//; }
    
    return(1);
}















###############################################################################################
##  Function: processCommandLine ()
##  
##  Processes command line storing important data in global vars (usually %conf)
##  
###############################################################################################
sub processCommandLine {
    
    
    ############################
    ##  Process command line  ##
    ############################
    
    my @ARGS = @ARGV;  ## This is so later we can re-parse the command line args later if we need to
    my $numargv = @ARGS;
    help() unless ($numargv);
    my $counter = 0;
    
    for ($counter = 0; $counter < $numargv; $counter++) {
  
        if ($ARGS[$counter] =~ /^-h$/i) {                    ## Help ##
            help();
        }
        
        elsif ($ARGS[$counter] eq "") {                      ## Ignore null arguments
            ## Do nothing
        }
        
        elsif ($ARGS[$counter] =~ /^--help/) {               ## Topical Help ##
            $counter++;
            if ($ARGS[$counter] && $ARGS[$counter] !~ /^-/) {
                helpTopic($ARGS[$counter]);
            }
            else {
                help();
            }
        }
        
        elsif ($ARGS[$counter] =~ /^-o$/i) {                 ## Options specified with -o ##
            $counter++;
            ## Loop through each option passed after the -o
            while ($ARGS[$counter] && $ARGS[$counter] !~ /^-/) {
                
                if ($ARGS[$counter] !~ /(\S+)=(\S.*)/) {
                    printmsg("WARNING => Name/Value pair [$ARGS[$counter]] is not properly formatted", 0);
                    printmsg("WARNING => Arguments proceeding -o should be in the form of \"name=value\"", 0);
                }
                else {
                    if (exists($opt{$1})) {
                        if ($1 eq 'message-header') {
                            $opt{$1} .= $2 . $CRLF;
                        }
                        else {
                            $opt{$1} = $2;
                        }
                        printmsg("DEBUG => Assigned \$opt{} key/value: $1 => $2", 3);
                    }
                    else {
                        printmsg("WARNING => Name/Value pair [$ARGS[$counter]] will be ignored: unknown key [$1]", 0);
                        printmsg("HINT => Try the --help option to find valid command line arguments", 1);
                    }
                }
                $counter++;
            }   $counter--;
        }
        
        elsif ($ARGS[$counter] =~ /^-f$/) {                  ## From ##
            $counter++;
            if ($ARGS[$counter] && $ARGS[$counter] !~ /^-/) { $from = $ARGS[$counter]; }
            else { printmsg("WARNING => The argument after -f was not an email address!", 0); $counter--; }
        }
        
        elsif ($ARGS[$counter] =~ /^-t$/) {                  ## To ##
            $counter++;
            while ($ARGS[$counter] && ($ARGS[$counter] !~ /^-/)) {
                if ($ARGS[$counter] =~ /[;,]/) {
                    push (@to, split(/[;,]/, $ARGS[$counter]));
                }
                else {
                    push (@to,$ARGS[$counter]);
                }
                $counter++;
            }   $counter--;
        }
        
        elsif ($ARGS[$counter] =~ /^-cc$/) {                 ## Cc ##
            $counter++;
            while ($ARGS[$counter] && ($ARGS[$counter] !~ /^-/)) {
                if ($ARGS[$counter] =~ /[;,]/) {
                    push (@cc, split(/[;,]/, $ARGS[$counter]));
                }
                else {
                    push (@cc,$ARGS[$counter]);
                }
                $counter++;
            }   $counter--;
        }
        
        elsif ($ARGS[$counter] =~ /^-bcc$/) {                ## Bcc ##
            $counter++;
            while ($ARGS[$counter] && ($ARGS[$counter] !~ /^-/)) {
                if ($ARGS[$counter] =~ /[;,]/) {
                    push (@bcc, split(/[;,]/, $ARGS[$counter]));
                }
                else {
                    push (@bcc,$ARGS[$counter]);
                }
                $counter++;
            }   $counter--;
        }
        
        elsif ($ARGS[$counter] =~ /^-m$/) {                  ## Message ##
            $counter++;
            $message = "";
            while ($ARGS[$counter] && $ARGS[$counter] !~ /^-/) {
                if ($message) { $message .= " "; }
                $message .= $ARGS[$counter];
                $counter++;
            }   $counter--;
            
            ## Replace '\n' with $CRLF.
            ## This allows newlines with messages sent on the command line
            $message =~ s/\\n/$CRLF/g;
        }
        
        elsif ($ARGS[$counter] =~ /^-u$/) {                  ## Subject ##
            $counter++;
            $subject = "";
            while ($ARGS[$counter] && $ARGS[$counter] !~ /^-/) {
                if ($subject) { $subject .= " "; }
                $subject .= $ARGS[$counter];
                $counter++;
            }   $counter--;
        }
        
        elsif ($ARGS[$counter] =~ /^-s$/) {                  ## Server ##
            $counter++;
            if ($ARGS[$counter] && $ARGS[$counter] !~ /^-/) {
                $conf{'server'} = $ARGS[$counter];
                if ($conf{'server'} =~ /:/) {                ## Port ##
                    ($conf{'server'},$conf{'port'}) = split(":",$conf{'server'});
                }
            }
            else { printmsg("WARNING - The argument after -s was not the server!", 0); $counter--; }
        }

        elsif ($ARGS[$counter] =~ /^-b$/) {                  ## Bind Address ##
            $counter++;
            if ($ARGS[$counter] && $ARGS[$counter] !~ /^-/) {
                $conf{'bindaddr'} = $ARGS[$counter];
            }
            else { printmsg("WARNING - The argument after -b was not the bindaddr!", 0); $counter--; }
        }
        
        elsif ($ARGS[$counter] =~ /^-a$/) {                  ## Attachments ##
            $counter++;
            while ($ARGS[$counter] && ($ARGS[$counter] !~ /^-/)) {
                push (@attachments,$ARGS[$counter]);
                $counter++;
            }   $counter--;
        }
        
        elsif ($ARGS[$counter] =~ /^-xu$/) {                  ## AuthSMTP Username ##
            $counter++;
            if ($ARGS[$counter] && $ARGS[$counter] !~ /^-/) {
               $opt{'username'} = $ARGS[$counter];
            }
            else {
                printmsg("WARNING => The argument after -xu was not valid username!", 0);
                $counter--;
            }
        }
        
        elsif ($ARGS[$counter] =~ /^-xp$/) {                  ## AuthSMTP Password ##
            $counter++;
            if ($ARGS[$counter] && $ARGS[$counter] !~ /^-/) {
               $opt{'password'} = $ARGS[$counter];
            }
            else {
                printmsg("WARNING => The argument after -xp was not valid password!", 0);
                $counter--;
            }
        }
        
        elsif ($ARGS[$counter] =~ /^-l$/) {                  ## Logging ##
            $counter++;
            $conf{'logging'} = 1;
            if ($ARGS[$counter] && $ARGS[$counter] !~ /^-/) { $conf{'logFile'} = $ARGS[$counter]; }
            else { printmsg("WARNING - The argument after -l was not the log file!", 0); $counter--; }
        }
        
        elsif ($ARGS[$counter] =~ s/^-v+//i) {               ## Verbosity ##
            my $tmp = (length($&) - 1);
            $conf{'debug'} += $tmp;
        }
        
        elsif ($ARGS[$counter] =~ /^-q$/) {                  ## Quiet ##
            $conf{'stdout'} = 0;
        }
        
        else {
            printmsg("Error: \"$ARGS[$counter]\" is not a recognized option!", 0);
            help();
        }
        
    }






    
    
    ###################################################
    ##  Verify required variables are set correctly  ##
    ###################################################
    
    ## Make sure we have something in $conf{hostname} and $opt{fqdn}
    if ($opt{'fqdn'} =~ /\./) {
        $conf{'hostname'} = $opt{'fqdn'};
        $conf{'hostname'} =~ s/\..*//;
    }
    
    if (!$conf{'server'}) { $conf{'server'} = 'localhost'; }
    if (!$conf{'port'})   { $conf{'port'} = 25; }
    if (!$from) {
        quit("ERROR => You must specify a 'from' field!  Try --help.", 1);
    }
    if ( ((scalar(@to)) + (scalar(@cc)) + (scalar(@bcc))) <= 0) {
        quit("ERROR => You must specify at least one recipient via -t, -cc, or -bcc", 1);
    }
    
    ## Make sure email addresses look OK.
    foreach my $addr (@to, @cc, @bcc, $from, $opt{'reply-to'}) {
        if ($addr) {
            if (!returnAddressParts($addr)) {
                printmsg("ERROR => Can't use improperly formatted email address: $addr", 0);
                printmsg("HINT => Try viewing the extended help on addressing with \"--help addressing\"", 1);
                quit("", 1);
            }
        }
    }
    
    ## Make sure all attachments exist.
    foreach my $file (@attachments) {
        if ( (! -f $file) or (! -r $file) ) {
            printmsg("ERROR => The attachment [$file] doesn't exist!", 0);
            printmsg("HINT => Try specifying the full path to the file or reading extended help with \"--help message\"", 1);
            quit("", 1);
        }
    }
    
    if ($conf{'logging'} and (!$conf{'logFile'})) {
        quit("ERROR => You used -l to enable logging but didn't specify a log file!", 1);
    }    
    
    if ( $opt{'username'} ) {
        if (!$opt{'password'}) {
            ## Prompt for a password since one wasn't specified with the -xp option.
            $SIG{'ALRM'} = sub { quit("ERROR => Timeout waiting for password inpupt", 1); };
            alarm(60) if ($^O !~ /win/i);  ## alarm() doesn't work in win32
            print "Password: ";
            $opt{'password'} = <STDIN>; chomp $opt{'password'};
            if (!$opt{'password'}) {
                quit("ERROR => A username for SMTP authentication was specified, but no password!", 1);
            }
        }
    }
    
    ## Validate the TLS setting
    $opt{'tls'} = lc($opt{'tls'});
    if ($opt{'tls'} !~ /^(auto|yes|no)$/) {
        quit("ERROR => Invalid TLS setting ($opt{'tls'}). Must be one of auto, yes, or no.", 1);
    }
    
    ## If TLS is set to "yes", make sure sendEmail loaded the libraries needed.
    if ($opt{'tls'} eq 'yes' and $conf{'tls_client'} == 0) {
        quit("ERROR => No TLS support!  SendEmail can't load required libraries. (try installing Net::SSLeay and IO::Socket::SSL)", 1);
    }
    
    ## Return 0 errors
    return(0);
}
















## getline($socketRef)
sub getline {
    my ($socketRef) = @_;
    local ($/) = "\r\n";
    return $$socketRef->getline;
}




## Receive a (multiline?) SMTP response from ($socketRef)
sub getResponse {
    my ($socketRef) = @_;
    my ($tmp, $reply);
    local ($/) = "\r\n";
    return undef unless defined($tmp = getline($socketRef));
    return("getResponse() socket is not open") unless ($$socketRef->opened);
    ## Keep reading lines if it's a multi-line response
    while ($tmp =~ /^\d{3}-/o) {
        $reply .= $tmp;
        return undef unless defined($tmp = getline($socketRef));
    }
    $reply .= $tmp;
    $reply =~ s/\r?\n$//o;
    return $reply;
}




###############################################################################################
##  Function:    SMTPchat ( [string $command] )
##
##  Description: Sends $command to the SMTP server (on SERVER) and awaits a successful
##               reply form the server.  If the server returns an error, or does not reply
##               within $conf{'alarm'} seconds an error is generated.
##               NOTE: $command is optional, if no command is specified then nothing will
##               be sent to the server, but a valid response is still required from the server.
##
##  Input:       [$command]          A (optional) valid SMTP command (ex. "HELO")
##  
##  
##  Output:      Returns zero on success, or non-zero on error.  
##               Error messages will be stored in $conf{'error'}
##               A copy of the last SMTP response is stored in the global variable
##               $conf{'SMTPchat_response'}
##               
##  
##  Example:     SMTPchat ("HELO mail.isp.net");
###############################################################################################
sub SMTPchat {
    my ($command) = @_;
    
    printmsg("INFO => Sending: \t$command", 1) if ($command);
    
    ## Send our command
    print $SERVER "$command$CRLF" if ($command);
    
    ## Read a response from the server
    $SIG{'ALRM'} = sub { $conf{'error'} = "alarm"; $SERVER->close(); };
    alarm($conf{'alarm'}) if ($^O !~ /win/i);  ## alarm() doesn't work in win32;
    my $result = $conf{'SMTPchat_response'} = getResponse(\$SERVER); 
    alarm(0) if ($^O !~ /win/i);  ## alarm() doesn't work in win32;
    
    ## Generate an alert if we timed out
    if ($conf{'error'} eq "alarm") {
        $conf{'error'} = "ERROR => Timeout while reading from $conf{'server'}:$conf{'port'} There was no response after $conf{'alarm'} seconds.";
        return(1);
    }
    
    ## Make sure the server actually responded
    if (!$result) {
        $conf{'error'} = "ERROR => $conf{'server'}:$conf{'port'} returned a zero byte response to our query.";
        return(2);
    }
    
    ## Validate the response
    if (evalSMTPresponse($result)) {
        ## conf{'error'} will already be set here
        return(2);
    }
    
    ## Print the success messsage
    printmsg($conf{'error'}, 1);
    
    ## Return Success
    return(0);
}












###############################################################################################
##  Function:    evalSMTPresponse (string $message )
##
##  Description: Searches $message for either an  SMTP success or error code, and returns
##               0 on success, and the actual error code on error.
##               
##
##  Input:       $message          Data received from a SMTP server (ex. "220 
##                                
##  
##  Output:      Returns zero on success, or non-zero on error.  
##               Error messages will be stored in $conf{'error'}
##               
##  
##  Example:     SMTPchat ("HELO mail.isp.net");
###############################################################################################
sub evalSMTPresponse {
    my ($message) = @_;
    
    ## Validate input
    if (!$message) { 
        $conf{'error'} = "ERROR => No message was passed to evalSMTPresponse().  What happened?";
        return(1)
    }
    
    printmsg("DEBUG => evalSMTPresponse() - Checking for SMTP success or error status in the message: $message ", 3);
    
    ## Look for a SMTP success code
    if ($message =~ /^([23]\d\d)/) {
        printmsg("DEBUG => evalSMTPresponse() - Found SMTP success code: $1", 2);
        $conf{'error'} = "SUCCESS => Received: \t$message";
        return(0);
    }
    
    ## Look for a SMTP error code
    if ($message =~ /^([45]\d\d)/) {
        printmsg("DEBUG => evalSMTPresponse() - Found SMTP error code: $1", 2);
        $conf{'error'} = "ERROR => Received: \t$message";
        return($1);
    }
    
    ## If no SMTP codes were found return an error of 1
    $conf{'error'} = "ERROR => Received a message with no success or error code. The message received was: $message";
    return(2);
    
}










#########################################################
# SUB: &return_month(0,1,etc)
#  returns the name of the month that corrosponds
#  with the number.  returns 0 on error.
#########################################################
sub return_month {
    my $x = $_[0];
    if ($x == 0)  { return 'Jan'; }
    if ($x == 1)  { return 'Feb'; }
    if ($x == 2)  { return 'Mar'; }
    if ($x == 3)  { return 'Apr'; }
    if ($x == 4)  { return 'May'; }
    if ($x == 5)  { return 'Jun'; }
    if ($x == 6)  { return 'Jul'; }
    if ($x == 7)  { return 'Aug'; }
    if ($x == 8)  { return 'Sep'; }
    if ($x == 9)  { return 'Oct'; }
    if ($x == 10) { return 'Nov'; }
    if ($x == 11) { return 'Dec'; }
    return (0);
}
















#########################################################
# SUB: &return_day(0,1,etc)
#  returns the name of the day that corrosponds
#  with the number.  returns 0 on error.
#########################################################
sub return_day {
    my $x = $_[0];
    if ($x == 0)  { return 'Sun'; }
    if ($x == 1)  { return 'Mon'; }
    if ($x == 2)  { return 'Tue'; }
    if ($x == 3)  { return 'Wed'; }
    if ($x == 4)  { return 'Thu'; }
    if ($x == 5)  { return 'Fri'; }
    if ($x == 6)  { return 'Sat'; }
    return (0);
}
















###############################################################################################
##  Function:    returnAddressParts(string $address)
##
##  Description: Returns a two element array containing the "Name" and "Address" parts of 
##               an email address.
##  
## Example:      "Brandon Zehm <caspian@dotconf.net>"
##               would return: ("Brandon Zehm", "caspian@dotconf.net");
## 
##               "caspian@dotconf.net"
##               would return: ("caspian@dotconf.net", "caspian@dotconf.net")
###############################################################################################
sub returnAddressParts {
    my $input = $_[0];
    my $name = "";
    my $address = "";
    
    ## Make sure to fail if it looks totally invalid
    if ($input !~ /(\S+\@\S+)/) {
        $conf{'error'} = "ERROR => The address [$input] doesn't look like a valid email address, ignoring it";
        return(undef());
    }
    
    ## Check 1, should find addresses like: "Brandon Zehm <caspian@dotconf.net>"
    elsif ($input =~ /^\s*(\S(.*\S)?)\s*<(\S+\@\S+)>/o) {
        ($name, $address) = ($1, $3);
    }
    
    ## Otherwise if that failed, just get the address: <caspian@dotconf.net>
    elsif ($input =~ /<(\S+\@\S+)>/o) {
        $name = $address = $1;
    }
    
    ## Or maybe it was formatted this way: caspian@dotconf.net
    elsif ($input =~ /(\S+\@\S+)/o) {
        $name = $address = $1;
    }
    
    ## Something stupid happened, just return an error.
    unless ($name and $address) {
        printmsg("ERROR => Couldn't parse the address: $input", 0);
        printmsg("HINT => If you think this should work, consider reporting this as a bug to $conf{'authorEmail'}", 1);
        return(undef());
    }
    
    ## Make sure there aren't invalid characters in the address, and return it.
    my $ctrl        = '\000-\037';
    my $nonASCII    = '\x80-\xff';
    if ($address =~ /[<> ,;:"'\[\]\\$ctrl$nonASCII]/) {
        printmsg("WARNING => The address [$address] seems to contain invalid characters: continuing anyway", 0);
    }
    return($name, $address);
}
















###############################################################################################
##  Function:    base64_encode(string $data, bool $chunk)
##
##  Description: Returns $data as a base64 encoded string.
##               If $chunk is true, the encoded data is returned in 76 character long lines
##               with the final \CR\LF removed.
##
##  Note: This is only used from the smtp auth section of code.
##        At some point it would be nice to merge the code that encodes attachments and this.
###############################################################################################
sub base64_encode {
    my $data = $_[0];
    my $chunk = $_[1];
    my $tmp = '';
    my $base64 = '';
    my $CRLF = "\r\n";
    
    ###################################
    ## Convert binary data to base64 ##
    ###################################
    while ($data =~ s/(.{45})//s) {        ## Get 45 bytes from the binary string
        $tmp = substr(pack('u', $&), 1);   ## Convert the binary to uuencoded text
        chop($tmp);
        $tmp =~ tr|` -_|AA-Za-z0-9+/|;     ## Translate from uuencode to base64
        $base64 .= $tmp;
    }
    
    ##########################
    ## Encode the leftovers ##
    ##########################
    my $padding = "";
    if ( ($data) and (length($data) > 0) ) {
        $padding = (3 - length($data) % 3) % 3;    ## Set flag if binary data isn't divisible by 3
        $tmp = substr(pack('u', $data), 1);        ## Convert the binary to uuencoded text
        chop($tmp);
        $tmp =~ tr|` -_|AA-Za-z0-9+/|;             ## Translate from uuencode to base64
        $base64 .= $tmp;
    }
    
    ############################
    ## Fix padding at the end ##
    ############################
    $data = '';
    $base64 =~ s/.{$padding}$/'=' x $padding/e if $padding; ## Fix the end padding if flag (from above) is set
    if ($chunk) {
        while ($base64 =~ s/(.{1,76})//s) {                     ## Put $CRLF after each 76 characters
            $data .= "$1$CRLF";
        }
    }
    else {
        $data = $base64;
    }
    
    ## Remove any trailing CRLF's
    $data =~ s/(\r|\n)*$//s;
    return($data);
}









#########################################################
# SUB: send_attachment("/path/filename")
# Sends the mime headers and base64 encoded file
# to the email server.
#########################################################
sub send_attachment {
    my ($filename) = @_;                             ## Get filename passed
    my (@fields, $y, $filename_name, $encoding,      ## Local variables
        @attachlines, $content_type);
    my $bin = 1;
    
    @fields = split(/\/|\\/, $filename);             ## Get the actual filename without the path  
    $filename_name = pop(@fields);       
    push @attachments_names, $filename_name;         ## FIXME: This is only used later for putting in the log file
    
    ##########################
    ## Autodetect Mime Type ##
    ##########################
    
    @fields = split(/\./, $filename_name);
    $encoding = $fields[$#fields];
    
    if ($encoding =~ /txt|text|log|conf|^c$|cpp|^h$|inc|m3u/i) {   $content_type = 'text/plain';                      }
    elsif ($encoding =~ /html|htm|shtml|shtm|asp|php|cfm/i) {      $content_type = 'text/html';                       }
    elsif ($encoding =~ /sh$/i) {                                  $content_type = 'application/x-sh';                }
    elsif ($encoding =~ /tcl/i) {                                  $content_type = 'application/x-tcl';               }
    elsif ($encoding =~ /pl$/i) {                                  $content_type = 'application/x-perl';              }
    elsif ($encoding =~ /js$/i) {                                  $content_type = 'application/x-javascript';        }
    elsif ($encoding =~ /man/i) {                                  $content_type = 'application/x-troff-man';         }
    elsif ($encoding =~ /gif/i) {                                  $content_type = 'image/gif';                       }
    elsif ($encoding =~ /jpg|jpeg|jpe|jfif|pjpeg|pjp/i) {          $content_type = 'image/jpeg';                      }
    elsif ($encoding =~ /tif|tiff/i) {                             $content_type = 'image/tiff';                      }
    elsif ($encoding =~ /xpm/i) {                                  $content_type = 'image/x-xpixmap';                 }
    elsif ($encoding =~ /bmp/i) {                                  $content_type = 'image/x-MS-bmp';                  }
    elsif ($encoding =~ /pcd/i) {                                  $content_type = 'image/x-photo-cd';                }
    elsif ($encoding =~ /png/i) {                                  $content_type = 'image/png';                       }
    elsif ($encoding =~ /aif|aiff/i) {                             $content_type = 'audio/x-aiff';                    }
    elsif ($encoding =~ /wav/i) {                                  $content_type = 'audio/x-wav';                     }
    elsif ($encoding =~ /mp2|mp3|mpa/i) {                          $content_type = 'audio/x-mpeg';                    }
    elsif ($encoding =~ /ra$|ram/i) {                              $content_type = 'audio/x-pn-realaudio';            }
    elsif ($encoding =~ /mpeg|mpg/i) {                             $content_type = 'video/mpeg';                      }
    elsif ($encoding =~ /mov|qt$/i) {                              $content_type = 'video/quicktime';                 }
    elsif ($encoding =~ /avi/i) {                                  $content_type = 'video/x-msvideo';                 }
    elsif ($encoding =~ /zip/i) {                                  $content_type = 'application/x-zip-compressed';    }
    elsif ($encoding =~ /tar/i) {                                  $content_type = 'application/x-tar';               }
    elsif ($encoding =~ /jar/i) {                                  $content_type = 'application/java-archive';        }
    elsif ($encoding =~ /exe|bin/i) {                              $content_type = 'application/octet-stream';        }
    elsif ($encoding =~ /ppt|pot|ppa|pps|pwz/i) {                  $content_type = 'application/vnd.ms-powerpoint';   }
    elsif ($encoding =~ /mdb|mda|mde/i) {                          $content_type = 'application/vnd.ms-access';       }
    elsif ($encoding =~ /xls|xlt|xlm|xld|xla|xlc|xlw|xll/i) {      $content_type = 'application/vnd.ms-excel';        }
    elsif ($encoding =~ /doc|dot/i) {                              $content_type = 'application/msword';              }
    elsif ($encoding =~ /rtf/i) {                                  $content_type = 'application/rtf';                 }
    elsif ($encoding =~ /pdf/i) {                                  $content_type = 'application/pdf';                 }
    elsif ($encoding =~ /tex/i) {                                  $content_type = 'application/x-tex';               }
    elsif ($encoding =~ /latex/i) {                                $content_type = 'application/x-latex';             }
    elsif ($encoding =~ /vcf/i) {                                  $content_type = 'application/x-vcard';             }
    else { $content_type = 'application/octet-stream';  }
  
  
  ############################
  ## Process the attachment ##
  ############################
    
    #####################################
    ## Generate and print MIME headers ##
    #####################################
    
    $y  = "$CRLF--$conf{'delimiter'}$CRLF";
    $y .= "Content-Type: $content_type;$CRLF";
    $y .= "        name=\"$filename_name\"$CRLF";
    $y .= "Content-Transfer-Encoding: base64$CRLF";
    $y .= "Content-Disposition: attachment; filename=\"$filename_name\"$CRLF";
    $y .= "$CRLF";
    print $SERVER $y;
    
    
    ###########################################################
    ## Convert the file to base64 and print it to the server ##
    ###########################################################
    
    open (FILETOATTACH, $filename) || do {
        printmsg("ERROR => Opening the file [$filename] for attachment failed with the error: $!", 0);
        return(1);
    };
    binmode(FILETOATTACH);                 ## Hack to make Win32 work
    
    my $res = "";
    my $tmp = "";
    my $base64 = "";
    while (<FILETOATTACH>) {               ## Read a line from the (binary) file
        $res .= $_;
        
        ###################################
        ## Convert binary data to base64 ##
        ###################################
        while ($res =~ s/(.{45})//s) {         ## Get 45 bytes from the binary string
            $tmp = substr(pack('u', $&), 1);   ## Convert the binary to uuencoded text
            chop($tmp);
            $tmp =~ tr|` -_|AA-Za-z0-9+/|;     ## Translate from uuencode to base64
            $base64 .= $tmp;
        }
        
        ################################
        ## Print chunks to the server ##
        ################################
        while ($base64 =~ s/(.{76})//s) {
            print $SERVER "$1$CRLF";
        }
      
    }
    
    ###################################
    ## Encode and send the leftovers ##
    ###################################
    my $padding = "";
    if ( ($res) and (length($res) >= 1) ) {
        $padding = (3 - length($res) % 3) % 3;  ## Set flag if binary data isn't divisible by 3
        $res = substr(pack('u', $res), 1);      ## Convert the binary to uuencoded text
        chop($res);
        $res =~ tr|` -_|AA-Za-z0-9+/|;          ## Translate from uuencode to base64
    }
    
    ############################
    ## Fix padding at the end ##
    ############################
    $res = $base64 . $res;                               ## Get left overs from above
    $res =~ s/.{$padding}$/'=' x $padding/e if $padding; ## Fix the end padding if flag (from above) is set
    if ($res) {
        while ($res =~ s/(.{1,76})//s) {                 ## Send it to the email server.
            print $SERVER "$1$CRLF";
        }
    }
    
    close (FILETOATTACH) || do {
        printmsg("ERROR - Closing the filehandle for file [$filename] failed with the error: $!", 0);
        return(2);
    };
    
    ## Return 0 errors
    return(0);

}