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 "<TT>decodeMime: $type0/$type1</TT><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)) != $bound) && (trim($body[$j]) != "")) {
  24                   $entity_header[$p] = $body[$j];
  25                   $j++;
  26                   $p++;
  27                }
  28
  29                fetchEntityHeader($imapConnection, $entity_header, $ent_type0, $ent_type1, $ent_bound, $encoding, $charset);
  30
  31                if ($ent_type0 == "text") {
  32                   while (substr(trim($body[$j]), 0, strlen($bound)) != $bound) {
  33                      $entity_body[$p] = $body[$j];
  34                      $j++;
  35                      $p++;
  36                   }
  37                } else {
  38                   if (trim($body[$j]) == "")
  39                      $j++;
  40                   while (substr(trim($body[$j]), 0, strlen($bound)) != $bound) {
  41                      $entity_body .= $body[$j];
  42                      $j++;
  43                   }
  44                }
  45                $entity = getEntity($entity_body, $ent_bound, $ent_type0, $ent_type1, $encoding, $charset);
  46
  47                $q = count($full_message);
  48                $full_message[$q] = $entity[0];
  49             }
  50             $i++;
  51          }
  52       } else {
  53          $full_message = getEntity($body, $bound, $type0, $type1);
  54       }
  55
  56       return $full_message;
  57    }
  58
  59    /** This gets one entity's properties **/
  60    function getEntity($body, $bound, $type0, $type1, $encoding, $charset) {
  61       echo "<TT>getEntity: $type0/$type1</TT><BR>";
  62       $msg[0]["TYPE0"] = $type0;
  63       $msg[0]["TYPE1"] = $type1;
  64       $msg[0]["ENCODING"] = $encoding;
  65       $msg[0]["CHARSET"] = $charset;
  66
  67       if ($type0 == "text") {
  68          // error correcting if they didn't follow RFC standards
  69          if (trim($type1) == "")
  70             $type1 = "plain";
  71
  72          if ($type1 == "plain") {
  73             $msg[0]["PRIORITY"] = 10;
  74             for ($p = 0;$p < count($body);$p++) {
  75                $msg[0]["BODY"][$p] = parsePlainTextMessage($body[$p]);
  76             }
  77          } else if ($type1 == "html") {
  78             $msg[0]["PRIORITY"] = 20;
  79             $msg[0]["BODY"] = $body;
  80          } else {
  81             $msg[0]["PRIORITY"] = 1;
  82             $msg[0]["BODY"][0] = "This entity is of an unknown format.  Doing my best to display anyway...<BR><BR>";
  83             for ($p = 1;$p < count($body);$p++) {
  84                $q = $p - 1;
  85                $msg[0]["BODY"][$p] = $body[$q];
  86             }
  87          }
  88       } else if ($type0 == "image") {
  89          $msg[0]["PRIORITY"] == 5;
  90          $msg[0]["BODY"][0] = $body;
  91       } else {
  92          $msg[0]["BODY"][0] = "<B><FONT COLOR=DD0000>This attachment is of an unknown format:  $type0/$type1</FONT></B>";
  93       }
  94
  95       return $msg;
  96    }
  97
  98    function formatBody($message) {
  99       for ($i=0; $i < count($message["ENTITIES"]); $i++) {
 100          if ($message["ENTITIES"][$i]["TYPE0"] == "text") {
 101             if ($message["ENTITIES"][$i]["PRIORITY"] > $priority)
 102                $priority = $message["ENTITIES"][$i]["PRIORITY"];
 103          }
 104       }
 105
 106       for ($i = 0; $i < count($message["ENTITIES"]); $i++) {
 107          switch ($priority) {
 108             /** HTML **/
 109             case 20: for ($i=0; $i < count($message["ENTITIES"]); $i++) {
 110                         if (($message["ENTITIES"][$i]["TYPE0"] == "text") && ($message["ENTITIES"][$i]["TYPE1"] == "html")) {
 111                            $body = decodeBody($message["ENTITIES"][$i]["BODY"], $message["ENTITIES"][$i]["ENCODING"]);
 112                         }
 113                      }
 114                      break;
 115             /** PLAIN **/
 116             case 10: for ($i=0; $i < count($message["ENTITIES"]); $i++) {
 117                         if (($message["ENTITIES"][$i]["TYPE0"] == "text") && ($message["ENTITIES"][$i]["TYPE1"] == "plain")) {
 118                            $body = decodeBody($message["ENTITIES"][$i]["BODY"], $message["ENTITIES"][$i]["ENCODING"]);
 119                         }
 120                      }
 121                      break;
 122             /** UNKNOWN...SEND WHAT WE GOT **/
 123             case 1:  for ($i=0; $i < count($message["ENTITIES"]); $i++) {
 124                         if (($message["ENTITIES"][$i]["TYPE0"] == "text")) {
 125                            $pos = count($body);
 126                            for ($b=0; $b < count($message["ENTITIES"][$i]["BODY"]); $b++) {
 127                               $pos = $pos + $b;
 128                               $body[$pos] = $message["ENTITIES"][$i]["BODY"][$b];
 129                            }
 130                         }
 131                      }
 132                      break;
 133          }
 134       }
 135
 136       for ($i = 0; $i < count($message["ENTITIES"]); $i++) {
 137          $pos = count($body);
 138          if ($message["ENTITIES"][$i]["TYPE0"] != "text") {
 139             $body[$pos] = "<BR><TT><U><B>ATTACHMENTS:</B></U></TT><BR>";
 140          }
 141       }
 142
 143       for ($i = 0; $i < count($message["ENTITIES"]); $i++) {
 144          $pos = count($body);
 145          if ($message["ENTITIES"][$i]["TYPE0"] != "text") {
 146             if ($message["ENTITIES"][$i]["TYPE0"] == "image") {
 147                $body[$pos] = "<TT>&nbsp;&nbsp;&nbsp;Image: " . $message["ENTITIES"][$i]["TYPE0"] . "/" . $message["ENTITIES"][$i]["TYPE1"] . "</TT><BR>";
 148
 149 /*               $file = fopen("../data/tmp.png", "w");
 150                fwrite($file, base64_decode($message["ENTITIES"][$i]["BODY"][0]));
 151                fclose($file);
 152 */
 153             } else {
 154                $body[$pos] = "<TT>&nbsp;&nbsp;&nbsp;Unknown Type: " . $message["ENTITIES"][$i]["TYPE0"] . "/" . $message["ENTITIES"][$i]["TYPE1"] . "</TT><BR>";
 155             }
 156          }
 157       }
 158
 159       return $body;
 160    }
 161
 162    function decodeBody($body, $encoding) {
 163       $encoding = strtolower($encoding);
 164       if ($encoding == "us-ascii") {
 165          $newbody = $body; // if only they all were this easy
 166       } else if ($encoding == "quoted-printable") {
 167          for ($q=0; $q < count($body); $q++) {
 168             if (substr(trim($body[$q]), -1) == "=") {
 169                $body[$q] = trim($body[$q]);
 170                $body[$q] = substr($body[$q], 0, strlen($body[$q])-1);
 171             } else if (substr(trim($body[$q]), -3) == "=20") {
 172                $body[$q] = trim($body[$q]);
 173                $body[$q] = substr($body[$q], 0, strlen($body[$q])-3);
 174                $body[$q] = "$body[$q]\n"; // maybe should be \n.. dunno
 175             }
 176          }
 177          for ($q=0;$q < count($body);$q++) {
 178             $body[$q] = ereg_replace("=3D", "=", $body[$q]);
 179          }
 180          $newbody = $body;
 181       } else {
 182          $newbody = $body;
 183       }
 184       return $newbody;
 185    }
 186 ?>