functions/mime.php

   1 <?
   2    /** mime.php
   3     **
   4     ** This contains the functions necessary to detect and decode MIME messages.
   5     **/
   6
   7
   8    function decodeMime($body, $bound, $type0, $type1) {
   9       echo "$type0/$type1<BR>";
  10       if ($type0 == "multipart") {
  11          if ($body[0] == "")
  12             $i = 1;
  13          else
  14             $i = 0;
  15
  16          $bound = trim($bound);
  17          $bound = "--$bound";
  18          while ($i < count($body)) {
  19             if (trim($body[$i]) == $bound) {
  20                $j = $i + 1;
  21                $p = 0;
  22
  23                while (substr(trim($body[$j]), 0, strlen($bound)) != $bound) {
  24                   $entity_body[$p] = $body[$j];
  25                   $j++;
  26                   $p++;
  27                }
  28                fetchEntityHeader($imapConnection, $entity_body, $ent_type0, $ent_type1, $ent_bound, &$encoding, &$charset);
  29                $entity = getEntity($entity_body, $ent_bound, $ent_type0, $ent_type1, $encoding, $charset);
  30
  31                $q = count($full_message);
  32                $full_message[$q] = $entity[0];
  33             }
  34             $i++;
  35          }
  36       } else {
  37          $full_message = getEntity($body, $bound, $type0, $type1);
  38       }
  39
  40       return $full_message;
  41    }
  42
  43    /** This gets one entity's properties **/
  44    function getEntity($body, $bound, $type0, $type1, $encoding, $charset) {
  45       echo "$type0/$type1<BR>";
  46       $msg[0]["TYPE0"] = $type0;
  47       $msg[0]["TYPE1"] = $type1;
  48       $msg[0]["ENCODING"] = $encoding;
  49       $msg[0]["CHARSET"] = $charset;
  50
  51       if ($type0 == "text") {
  52          if ($type1 == "plain") {
  53             $msg[0]["PRIORITY"] = 10;
  54             for ($p = 0;$p < count($body);$p++) {
  55                $msg[0]["BODY"][$p] = parsePlainTextMessage($body[$p]);
  56             }
  57          } else if ($type1 == "html") {
  58             $msg[0]["PRIORITY"] = 20;
  59             $msg[0]["BODY"] = $body;
  60          } else {
  61             $msg[0]["PRIORITY"] = 1;
  62             $msg[0]["BODY"][0] = "<B><FONT COLOR=DD0000>This attachment is an unknown text format:  $type0/$type1</FONT></B>";
  63          }
  64       } else if ($type0 == "image") {
  65          $msg[0]["BODY"][0] = "<B><FONT COLOR=DD0000>This is an image.  Squirrelmail currently cannot decode images.</FONT></B>";
  66       } else {
  67          $msg[0]["BODY"][0] = "<B><FONT COLOR=DD0000>This attachment is of an unknown format:  $type0/$type1</FONT></B>";
  68       }
  69
  70       return $msg;
  71    }
  72
  73    function formatBody($message) {
  74       for ($i=0; $i < count($message["ENTITIES"]); $i++) {
  75          if ($message["ENTITIES"][$i]["TYPE0"] == "text") {
  76             if ($message["ENTITIES"][$i]["PRIORITY"] > $priority)
  77                $priority = $message["ENTITIES"][$i]["PRIORITY"];
  78          }
  79       }
  80
  81       for ($i = 0; $i < count($message["ENTITIES"]); $i++) {
  82          switch ($priority) {
  83             /** HTML **/
  84             case 20: for ($i=0; $i < count($message["ENTITIES"]); $i++) {
  85                         if (($message["ENTITIES"][$i]["TYPE0"] == "text") && ($message["ENTITIES"][$i]["TYPE1"] == "html")) {
  86                            $body = decodeBody($message["ENTITIES"][$i]["BODY"], $message["ENTITIES"][$i]["ENCODING"]);
  87                         }
  88                      }
  89                      break;
  90             /** PLAIN **/
  91             case 10: for ($i=0; $i < count($message["ENTITIES"]); $i++) {
  92                         if (($message["ENTITIES"][$i]["TYPE0"] == "text") && ($message["ENTITIES"][$i]["TYPE1"] == "plain")) {
  93                            $body = decodeBody($message["ENTITIES"][$i]["BODY"], $message["ENTITIES"][$i]["ENCODING"]);
  94                         }
  95                      }
  96                      break;
  97             /** UNKNOWN...SEND WHAT WE GOT **/
  98             case 1:  for ($i=0; $i < count($message["ENTITIES"]); $i++) {
  99                         if (($message["ENTITIES"][$i]["TYPE0"] == "text")) {
 100                            $pos = count($body);
 101                            for ($b=0; $b < count($message["ENTITIES"][$i]["BODY"]); $b++) {
 102                               $pos = $pos + $b;
 103                               $body[$pos] = $message["ENTITIES"][$i]["BODY"][$b];
 104                            }
 105                         }
 106                      }
 107                      break;
 108          }
 109       }
 110       return $body;
 111    }
 112
 113    function decodeBody($body, $encoding) {
 114       $encoding = strtolower($encoding);
 115       if ($encoding == "us-ascii") {
 116          $newbody = $body; // if only they all were this easy
 117       } else if ($encoding == "quoted-printable") {
 118          for ($q=0; $q < count($body); $q++) {
 119             if (substr(trim($body[$q]), -1) == "=") {
 120                $body[$q] = trim($body[$q]);
 121                $body[$q] = substr($body[$q], 0, strlen($body[$q])-1);
 122             } else if (substr(trim($body[$q]), -3) == "=20") {
 123                $body[$q] = trim($body[$q]);
 124                $body[$q] = substr($body[$q], 0, strlen($body[$q])-3);
 125                $body[$q] = "$body[$q]\n"; // maybe should be \n.. dunno
 126             }
 127          }
 128          for ($q=0;$q < count($body);$q++) {
 129             $body[$q] = ereg_replace("=3D", "=", $body[$q]);
 130          }
 131          $newbody = $body;
 132       } else {
 133          $newbody = $body;
 134       }
 135       return $newbody;
 136    }
 137 ?>