Messages de décodage PHP IMAP

Question

J'ai des courriels envoyés via un encodage base64 et un encodage 8bit. Je me demandais comment je pouvais vérifier l'encodage du message en utilisant imap_fetchstructure (je fais cela depuis environ deux heures, donc perdu) et ensuite le décoder correctement.

Gmail et Mailbox (application sur iOS) l'envoient en 8bit tandis que l'application Mail de Windows 8 l'envoie en base64. Dans tous les cas, j'ai besoin de décoder s'il s'agit de 8 bits ou de base64 en détectant le type d'encodage utilisé.

Utilisation de PHP 5.1.6 (oui, je devrais mettre à jour, j'ai été occupé).

Je n'ai pas vraiment de code à montrer. C'est tout ce que j'ai :

<?php
$hostname = '{********:993/imap/ssl}INBOX';
$username = '*********';
$password = '******';

$inbox = imap_open($hostname,$username,$password) or die('Cannot connect to server: ' . imap_last_error());

$emails = imap_search($inbox,'ALL');

if($emails) {

    $output = '';

    rsort($emails);

    foreach($emails as $email_number) {

        $overview = imap_fetch_overview($inbox,$email_number,0);
        $message = imap_fetchbody($inbox,$email_number,2);
        $struct = imap_fetchstructure($inbox, $email_number);

        $output.= '<div class="toggle'.($overview[0]->seen ? 'read' : 'unread').'">';
        $output.= '<span class="subject">'.$overview[0]->subject.'</span> ';
        $output.= '<span class="from">'.$overview[0]->from.'</span>';
        $output.= '<span class="date">on '.$overview[0]->date.'</span>';
        $output.= '</div>';

        /* output the email body */
        $output.= '<div class="body">'.$message.'</div>';
    }

    echo $output;
} 

imap_close($inbox);
?>

Answer 1

Imap_bodystruct() ou imap_fetchstructure() devraient vous renvoyer cette information. Le code suivant devrait faire exactement ce que vous recherchez :

<?php
$hostname = '{********:993/imap/ssl}INBOX';
$username = '*********';
$password = '******';

$inbox = imap_open($hostname,$username,$password) or die('Cannot connect to server: ' . imap_last_error());

$emails = imap_search($inbox,'ALL');

if($emails) {
    $output = '';
    rsort($emails);

    foreach($emails as $email_number) {
        $overview = imap_fetch_overview($inbox,$email_number,0);
        $structure = imap_fetchstructure($inbox, $email_number);

        if(isset($structure->parts) && is_array($structure->parts) && isset($structure->parts[1])) {
            $part = $structure->parts[1];
            $message = imap_fetchbody($inbox,$email_number,2);

            if($part->encoding == 3) {
                $message = imap_base64($message);
            } else if($part->encoding == 1) {
                $message = imap_8bit($message);
            } else {
                $message = imap_qprint($message);
            }
        }

        $output.= '<div class="toggle'.($overview[0]->seen ? 'read' : 'unread').'">';
        $output.= '<span class="from">From: '.utf8_decode(imap_utf8($overview[0]->from)).'</span>';
        $output.= '<span class="date">on '.utf8_decode(imap_utf8($overview[0]->date)).'</span>';
        $output.= '<br /><span class="subject">Subject('.$part->encoding.'): '.utf8_decode(imap_utf8($overview[0]->subject)).'</span> ';
        $output.= '</div>';

        $output.= '<div class="body">'.$message.'</div><hr />';
    }

    echo $output;
}

imap_close($inbox);
?>

Answer 2

Vous pouvez regarder cet exemple.

Imap/Imap

Voici un extrait de code

switch ($encoding) {
    # 7BIT
    case 0:
        return $text;
    # 8BIT
    case 1:
        return quoted_printable_decode(imap_8bit($text));
    # BINARY
    case 2:
        return imap_binary($text);
    # BASE64
    case 3:
        return imap_base64($text);
    # QUOTED-PRINTABLE
    case 4:
        return quoted_printable_decode($text);
    # OTHER
    case 5:
        return $text;
    # UNKNOWN
    default:
        return $text;
}

Answer 3

Objets retournés par imap_fetchstructure()

1. codage (codage du transfert du corps)

Encodage des transferts (peut varier selon la bibliothèque utilisée)

0 7BIT 1 8BIT 2 BINAIRE 3 BASE64 4 QUOTED-PRINTABLE 5 OTHER

$s = imap_fetchstructure($mbox,$mid);
if ($s->encoding==3)
    $data = base64_decode($data);

Answer 4

            // Best for reading attached file from e-mail as well as body of the mail
            $hostname = '{imap.gmail.com:993/imap/ssl}Inbox';
            $username = 'xzy.xyz@xyz.com';
            $password = '****************';

            $inbox = imap_open($hostname,$username,$password) or die('Cannot connect to Gmail: ' . imap_last_error());  
            $emails   = imap_search($inbox, 'SUBJECT "'.$subject.'"');
            rsort($emails);
            foreach ($emails as $key => $value) {

                $overview = imap_fetch_overview($inbox,$value,0);
                $message_date = new DateTime($overview[0]->date);
                $date = $message_date->format('Ymd');
                $message = imap_fetchbody($inbox,$value,2);
                $structure = imap_fetchstructure($inbox, $value);
                $attachments = [];
                if(isset($structure->parts) && count($structure->parts)) 
                {
                    for($i = 0; $i < count($structure->parts); $i++) 
                    {
                        $attachments[$i] = array(
                                'is_attachment' => false,
                                'filename' => '',
                                'name' => '',
                                'attachment' => ''
                            );
                        if($structure->parts[$i]->ifdparameters) 
                        {
                            foreach($structure->parts[$i]->dparameters as $object) 
                            {
                                if(strtolower($object->attribute) == 'filename') 
                                {
                                    $attachments[$i]['is_attachment'] = true;
                                    $attachments[$i]['filename'] = $object->value;
                                }
                            }
                        }

                        if($structure->parts[$i]->ifparameters) 
                        {
                            foreach($structure->parts[$i]->parameters as $object) 
                            {
                                if(strtolower($object->attribute) == 'name') 
                                {
                                    $attachments[$i]['is_attachment'] = true;
                                    $attachments[$i]['name'] = $object->value;
                                }
                            }
                        }

                        if($attachments[$i]['is_attachment']) 
                        {
                            $attachments[$i]['attachment'] = imap_fetchbody($inbox, $value, $i+1);                           
                            if($structure->parts[$i]->encoding == 3) //3 = BASE64 encoding
                            { 
                                $attachments[$i]['attachment'] = base64_decode($attachments[$i]['attachment']);
                            }
                            elseif($structure->parts[$i]->encoding == 4) //4 = QUOTED-PRINTABLE encoding
                            { 
                                $attachments[$i]['attachment'] = quoted_printable_decode($attachments[$i]['attachment']);
                            }
                        }
                    }
                }
            }
            imap_close($inbox);//Never forget to close the connection