Rewrote multipart/* algorithm to be recursive
[squirrelmail.git] / functions / mime.php
index aabd9cd88ec5ea5f2faad34127325f6fe77cf212..8186b747961b2dc1f2fa98a930de0f5ce9eebd8d 100644 (file)
     **/
 
 
-   function decodeMime($body, $bound, $type0, $type1) {
-      echo "$type0/$type1<BR>";
+   /** This is the first function called.  It decides if this is a multipart
+       message or if it should be handled as a single entity
+    **/
+   function decodeMime($body, $bound, $type0, $type1, &$entities) {
       if ($type0 == "multipart") {
-         if ($body[0] == "")
-            $i = 1;
-         else
-            $i = 0;
-
          $bound = trim($bound);
-         $bound = "--$bound";
-         while ($i < count($body)) {
-            if (trim($body[$i]) == $bound) {
-               $j = $i + 1;
+         while (($i < count($body)) && (substr($body[$i], 0, strlen("--$bound--")) != "--$bound--")) {
+            if (trim($body[$i]) == "--$bound") {
+               $j = $i+1;
                $p = 0;
 
-               while (substr(trim($body[$j]), 0, strlen($bound)) != $bound) {
-                  $entity_body[$p] = $body[$j];
+               /** Lets find the header for this entity **/
+               /** If the first line after the boundary is blank, we use default values **/
+               if (trim($body[$j]) == "") {
+                  $ent_type0 = "text";
+                  $ent_type1 = "plain";
+                  $charset = "us-ascii";
                   $j++;
-                  $p++;
+               /** If the first line ISNT blank, read in the header for this entity **/
+               } else {
+                  while ((substr(trim($body[$j]), 0, strlen("--$bound")) != "--$bound") && (trim($body[$j]) != "")) {
+                     $entity_header[$p] = $body[$j];
+                     $j++;
+                     $p++;
+                  }
+                  /** All of these values are getting passed back to us **/
+                  fetchEntityHeader($imapConnection, $entity_header, $ent_type0, $ent_type1, $ent_bound, $encoding, $charset, $filename);
                }
-               fetchEntityHeader($imapConnection, $entity_body, $ent_type0, $ent_type1, $ent_bound, &$encoding, &$charset);
-               $entity = getEntity($entity_body, $ent_bound, $ent_type0, $ent_type1, $encoding, $charset);
 
-               $q = count($full_message);
-               $full_message[$q] = $entity[0];
+
+               /** OK, we have the header information, now lets decide what to do with it **/
+               if ($ent_type0 == "multipart") {
+                  $y = 0;
+                  while (substr($body[$j], 0, strlen("--$bound--")) != "--$bound--") {
+                     $ent_body[$y] = $body[$j];
+                     $y++;
+                     $j++;
+                  }
+                  $ent = decodeMime($ent_body, $ent_bound, $ent_type0, $ent_type1, $entities);
+                  $entities = $ent;
+               } else if ($ent_type0 == "text") {
+                  while (substr(trim($body[$j]), 0, strlen("--$bound")) != "--$bound") {
+                     $entity_body[$p] = $body[$j];
+                     $j++;
+                     $p++;
+                  }
+                  $count = count($entities);
+                  $entities[$count] = getEntity($entity_body, $ent_bound, $ent_type0, $ent_type1, $encoding, $charset, $filename);
+
+               } else {
+                  $j++;
+                  $entity_body = "";
+                  while (substr(trim($body[$j]), 0, strlen("--$bound")) != "--$bound") {
+                     $entity_body .= $body[$j];
+                     $j++;
+                  }
+                  $count = count($entities);
+                  $entities[$count] = getEntity($entity_body, $ent_bound, $ent_type0, $ent_type1, $encoding, $charset, $filename);
+               }
             }
             $i++;
          }
       } else {
-         $full_message = getEntity($body, $bound, $type0, $type1);
+         $count = count($entities);
+         $entities[$count] = getEntity($body, $bound, $type0, $type1, $encoding, $charset, $filename);
       }
 
-      return $full_message;
+      return $entities;
    }
 
    /** This gets one entity's properties **/
-   function getEntity($body, $bound, $type0, $type1, $encoding, $charset) {
-      echo "$type0/$type1<BR>";
-      $msg[0]["TYPE0"] = $type0;
-      $msg[0]["TYPE1"] = $type1;
-      $msg[0]["ENCODING"] = $encoding;
-      $msg[0]["CHARSET"] = $charset;
+   function getEntity($body, $bound, $type0, $type1, $encoding, $charset, $filename) {
+      $msg["TYPE0"] = $type0;
+      $msg["TYPE1"] = $type1;
+      $msg["ENCODING"] = $encoding;
+      $msg["CHARSET"] = $charset;
+      $msg["FILENAME"] = $filename;
 
+      $msg["BODY"][0] = $body;
       if ($type0 == "text") {
+         // error correcting if they didn't follow RFC standards
+         if (trim($type1) == "")
+            $type1 = "plain";
+
          if ($type1 == "plain") {
-            $msg[0]["PRIORITY"] = 10;
             for ($p = 0;$p < count($body);$p++) {
-               $msg[0]["BODY"][$p] = parsePlainTextMessage($body[$p]);
+               $msg["BODY"][$p] = parsePlainTextMessage($body[$p]);
             }
          } else if ($type1 == "html") {
-            $msg[0]["PRIORITY"] = 20;
-            $msg[0]["BODY"] = $body;
+            for ($p = 0;$p < count($body);$p++) {
+               $msg["BODY"][$p] = parseHTMLMessage($body[$p]);
+            }
          } else {
-            $msg[0]["PRIORITY"] = 1;
-            $msg[0]["BODY"][0] = "<B><FONT COLOR=DD0000>This attachment is an unknown text format:  $type0/$type1</FONT></B>";
+            $msg["BODY"] = $body;
          }
-      } else if ($type0 == "image") {
-         $msg[0]["BODY"][0] = "<B><FONT COLOR=DD0000>This is an image.  Squirrelmail currently cannot decode images.</FONT></B>";
       } else {
-         $msg[0]["BODY"][0] = "<B><FONT COLOR=DD0000>This attachment is of an unknown format:  $type0/$type1</FONT></B>";
+         $msg["BODY"][0] = $body;
       }
 
       return $msg;
    }
 
+   /** This will check whether or not the message contains a certain type.  It
+       searches through all the entities for a match.
+    **/
+   function containsType($message, $type0, $type1, &$ent_num) {
+      $type0 = strtolower($type0);
+      $type1 = strtolower($type1);
+      for ($i = 0; $i < count($message["ENTITIES"]); $i++) {
+         /** Check only on type0 **/
+         if ( $type1 == "any_type" ) {
+            if ( ($message["ENTITIES"][$i]["TYPE0"] == $type0) ) {
+               $ent_num = $i;
+               return true;
+            }
+
+         /** Check on type0 and type1 **/
+         } else {
+            if ( ($message["ENTITIES"][$i]["TYPE0"] == $type0) && ($message["ENTITIES"][$i]["TYPE1"] == $type1) ) {
+               $ent_num = $i;
+               return true;
+            }
+         }
+      }
+      return false;
+   }
+
+   /** This returns a parsed string called $body.  That string can then be displayed
+       as the actual message in the HTML.   It contains everything needed, including
+       HTML Tags, Attachments at the bottom, etc.
+    **/
    function formatBody($message) {
-      for ($i=0; $i < count($message["ENTITIES"]); $i++) {
-         if ($message["ENTITIES"][$i]["TYPE0"] == "text") {
-            if ($message["ENTITIES"][$i]["PRIORITY"] > $priority)
-               $priority = $message["ENTITIES"][$i]["PRIORITY"];
+      /** this if statement checks for the entity to show as the primary message.  To
+          add more of them, just put them in the order that is their priority.
+       **/
+      if (containsType($message, "text", "html", $ent_num)) {
+         $body = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]);
+      } else if (containsType($message, "text", "plain", $ent_num)) {
+         $body = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]);
+      }
+      // add other primary displaying message types here
+      else {
+         // find any type that's displayable
+         if (containsType($message, "text", "any_type", $ent_num)) {
+            $body = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]);
+         } else if (containsType($message, "message", "any_type", $ent_num)) {
+            $body = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]);
          }
       }
 
-      for ($i = 0; $i < count($message["ENTITIES"]); $i++) {
-         switch ($priority) {
-            /** HTML **/
-            case 20: for ($i=0; $i < count($message["ENTITIES"]); $i++) {
-                        if (($message["ENTITIES"][$i]["TYPE0"] == "text") && ($message["ENTITIES"][$i]["TYPE1"] == "html")) {
-                           $body = decodeBody($message["ENTITIES"][$i]["BODY"], $message["ENTITIES"][$i]["ENCODING"]);
-                        }
-                     }
-                     break;
-            /** PLAIN **/
-            case 10: for ($i=0; $i < count($message["ENTITIES"]); $i++) {
-                        if (($message["ENTITIES"][$i]["TYPE0"] == "text") && ($message["ENTITIES"][$i]["TYPE1"] == "plain")) {
-                           $body = decodeBody($message["ENTITIES"][$i]["BODY"], $message["ENTITIES"][$i]["ENCODING"]);
-                        }
-                     }
-                     break;
-            /** UNKNOWN...SEND WHAT WE GOT **/
-            case 1:  for ($i=0; $i < count($message["ENTITIES"]); $i++) {
-                        if (($message["ENTITIES"][$i]["TYPE0"] == "text")) {
-                           $pos = count($body);
-                           for ($b=0; $b < count($message["ENTITIES"][$i]["BODY"]); $b++) {
-                              $pos = $pos + $b;
-                              $body[$pos] = $message["ENTITIES"][$i]["BODY"][$b];
-                           }
-                        }
-                     }
-                     break;
+      /** Display the ATTACHMENTS: message if there's more than one part **/
+      if (count($message["ENTITIES"]) > 1) {
+         $pos = count($body);
+         $body[$pos] .= "<BR><TT><U><B>ATTACHMENTS:</B></U></TT><BR>";
+         $num = 0;
+
+         for ($i = 0; $i < count($message["ENTITIES"]); $i++) {
+            /** If we've displayed this entity, go to the next one **/
+            if ($ent_num == $i)
+               continue;
+
+            $type0 = strtolower($message["ENTITIES"][$i]["TYPE0"]);
+            $type1 = strtolower($message["ENTITIES"][$i]["TYPE1"]);
+
+            $num++;
+            $filename = $message["ENTITIES"][$i]["FILENAME"];
+            if (trim($filename) == "") {
+               $filename = "UNKNOWN_FORMAT_" . time() . $i;
+               $display_filename = "Attachment $i";
+            } else {
+               $display_filename = $filename;
+            }
+
+            $urlMailbox = urlencode($message["INFO"]["MAILBOX"]);
+            $id = $message["INFO"]["ID"];
+            $body[$pos] .= "<TT>&nbsp;&nbsp;&nbsp;<A HREF=\"../src/download.php?passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$i\">" . $display_filename . "</A>&nbsp;&nbsp;<SMALL>(TYPE: $type0/$type1)</SMALL></TT><BR>";
          }
       }
       return $body;
    }
 
+
+
+   /** this function decodes the body depending on the encoding type. **/
    function decodeBody($body, $encoding) {
       $encoding = strtolower($encoding);
       if ($encoding == "us-ascii") {
             $body[$q] = ereg_replace("=3D", "=", $body[$q]);
          }
          $newbody = $body;
+      } else if ($encoding == "base64") {
+         $newbody = base64_decode($body);
       } else {
          $newbody = $body;
       }