-<?
+<?php
/** mime.php
**
- ** This contains the functions necessary to detect and decode MIME messages.
+ ** This contains the functions necessary to detect and decode MIME
+ ** messages.
+ **
**/
+ $debug_mime = false;
+ $mime_php = true;
- function decodeMime($body, $bound, $type0, $type1) {
-// echo "$type0/$type1<BR>";
- if ($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;
- $p = 0;
-
- while (substr(trim($body[$j]), 0, strlen($bound)) != $bound) {
- $entity_body[$p] = $body[$j];
- $j++;
- $p++;
- }
- fetchEntityHeader($imapConnection, $entity_body, $ent_type0, $ent_type1, $ent_bound, &$encoding, &$charset);
- $entity = getEntity($entity_body, $ent_bound, $ent_type0, $ent_type1, $encoding, $charset);
+ if (!isset($i18n_php))
+ include "../functions/i18n.php";
+ if (!isset($imap_php))
+ include "../functions/imap.php";
+ if (!isset($config_php))
+ include "../config/config.php";
- $q = count($full_message);
- $full_message[$q] = $entity[0];
- }
- $i++;
- }
+
+ /** Setting up the objects that have the structure for the message **/
+
+ class msg_header {
+ /** msg_header contains generic variables for values that **/
+ /** could be in a header. **/
+
+ var $type0, $type1, $boundary, $charset, $encoding;
+ var $to, $from, $date, $cc, $bcc, $reply_to, $subject;
+ var $id, $mailbox, $description;
+ var $entity_id, $message_id;
+ }
+
+ class message {
+ /** message is the object that contains messages. It is a recursive
+ object in that through the $entities variable, it can contain
+ more objects of type message. See documentation in mime.txt for
+ a better description of how this works.
+ **/
+ var $header;
+ var $entities;
+
+ function addEntity ($msg) {
+ $this->entities[count($this->entities)] = $msg;
+ }
+ }
+
+
+
+ /* --------------------------------------------------------------------------------- */
+ /* MIME DECODING */
+ /* --------------------------------------------------------------------------------- */
+
+ // This function gets the structure of a message and stores it in the "message" class.
+ // It will return this object for use with all relevant header information and
+ // fully parsed into the standard "message" object format.
+ function mime_structure ($imap_stream, $header) {
+ global $debug_mime;
+ sqimap_messages_flag ($imap_stream, $header->id, $header->id, "Seen");
+
+ $id = $header->id;
+ fputs ($imap_stream, "a001 FETCH $id BODYSTRUCTURE\r\n");
+ $read = fgets ($imap_stream, 10000);
+ $read = strtolower($read);
+
+ if ($debug_mime) echo "<tt>$read</tt><br><br>";
+ // isolate the body structure and remove beginning and end parenthesis
+ $read = trim(substr ($read, strpos($read, "bodystructure") + 13));
+ $read = trim(substr ($read, 0, -1));
+ $end = mime_match_parenthesis(0, $read);
+ while ($end == strlen($read)-1) {
+ $read = trim(substr ($read, 0, -1));
+ $read = trim(substr ($read, 1));
+ $end = mime_match_parenthesis(0, $read);
+ }
+
+ if ($debug_mime) echo "<tt>$read</tt><br><br>";
+
+ $msg = mime_parse_structure ($read);
+ $msg->header = $header;
+ return $msg;
+ }
+
+ // this starts the parsing of a particular structure. It is called recursively,
+ // so it can be passed different structures. It returns an object of type
+ // $message.
+ // First, it checks to see if it is a multipart message. If it is, then it
+ // handles that as it sees is necessary. If it is just a regular entity,
+ // then it parses it and adds the necessary header information (by calling out
+ // to mime_get_elements()
+ function mime_parse_structure ($structure, $ent_id) {
+ global $debug_mime;
+ if ($debug_mime) echo "<font color=008800><tt>START: mime_parse_structure()</tt></font><br>";
+ $msg = new message();
+ if (substr($structure, 0, 1) == "(") {
+ $ent_id = mime_new_element_level($ent_id);
+ $start = $end = -1;
+ if ($debug_mime) echo "<br><font color=0000aa><tt>$structure</tt></font><br>";
+ do {
+ if ($debug_mime) echo "<font color=008800><tt>Found entity...</tt></font><br>";
+ $start = $end+1;
+ $end = mime_match_parenthesis ($start, $structure);
+
+ $element = substr($structure, $start+1, ($end - $start)-1);
+ $ent_id = mime_increment_id ($ent_id);
+ $newmsg = mime_parse_structure ($element, $ent_id);
+ $msg->addEntity ($newmsg);
+ } while (substr($structure, $end+1, 1) == "(");
} else {
- $full_message = getEntity($body, $bound, $type0, $type1);
+ // parse the elements
+ if ($debug_mime) echo "<br><font color=0000aa><tt>$structure</tt></font><br>";
+ $msg = mime_get_element (&$structure, $msg, $ent_id);
+ if ($debug_mime) echo "<br>";
}
+ return $msg;
+ if ($debug_mime) echo "<font color=008800><tt> END: mime_parse_structure()</tt></font><br>";
+ }
- return $full_message;
+ // Increments the element ID. An element id can look like any of
+ // the following: 1, 1.2, 4.3.2.4.1, etc. This function increments
+ // the last number of the element id, changing 1.2 to 1.3.
+ function mime_increment_id ($id) {
+ global $debug_mime;
+ if (strpos($id, ".")) {
+ $first = substr($id, 0, strrpos($id, "."));
+ $last = substr($id, strrpos($id, ".")+1);
+ $last++;
+ $new = $first . "." .$last;
+ } else {
+ $new = $id + 1;
+ }
+ if ($debug_mime) echo "<b>INCREMENT: $new</b><br>";
+ return $new;
}
- /** This gets one entity's properties **/
- function getEntity($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"] = $charset;
+ // See comment for mime_increment_id().
+ // This adds another level on to the entity_id changing 1.3 to 1.3.0
+ // NOTE: 1.3.0 is not a valid element ID. It MUST be incremented
+ // before it can be used. I left it this way so as not to have
+ // to make a special case if it is the first entity_id. It
+ // always increments it, and that works fine.
+ function mime_new_element_level ($id) {
+ if (!$id) $id = 0;
+ else $id = $id . ".0";
+
+ return $id;
+ }
- if ($type0 == "text") {
- // error correcting if they didn't follow RFC standards
- if (trim($type1) == "")
- $type1 = "plain";
+ function mime_get_element (&$structure, $msg, $ent_id) {
+ global $debug_mime;
+ $elem_num = 1;
+ $msg->header = new msg_header();
+ $msg->header->entity_id = $ent_id;
+
+ while (strlen($structure) > 0) {
+ $structure = trim($structure);
+ $char = substr($structure, 0, 1);
- if ($type1 == "plain") {
- $msg[0]["PRIORITY"] = 10;
- for ($p = 0;$p < count($body);$p++) {
- $msg[0]["BODY"][$p] = parsePlainTextMessage($body[$p]);
- }
- } else if ($type1 == "html") {
- $msg[0]["PRIORITY"] = 20;
- $msg[0]["BODY"] = $body;
+ if (substr($structure, 0, 3) == "nil") {
+ $text = "";
+ $structure = substr($structure, 3);
+ } else if ($char == "\"") {
+ // loop through until we find the matching quote, and return that as a string
+ $pos = 1;
+ $char = substr($structure, $pos, 1);
+ while ($char != "\"" && $pos < strlen($structure)) {
+ $text .= $char;
+ $pos++;
+ $char = substr($structure, $pos, 1);
+ }
+ $structure = substr($structure, strlen($text) + 2);
+ } else if ($char == "(") {
+ // comment me
+ $end = mime_match_parenthesis (0, $structure);
+ $sub = substr($structure, 1, $end-1);
+ $properties = mime_get_props($properties, $sub);
+ $structure = substr($structure, strlen($sub) + 2);
} else {
- $msg[0]["PRIORITY"] = 1;
- $msg[0]["BODY"][0] = "This entity is of an unknown format. Doing my best to display anyway...<BR><BR>";
- for ($p = 1;$p < count($body);$p++) {
- $q = $p - 1;
- $msg[0]["BODY"][$p] = $body[$q];
+ // loop through until we find a space or an end parenthesis
+ $pos = 0;
+ $char = substr($structure, $pos, 1);
+ while ($char != " " && $char != ")" && $pos < strlen($structure)) {
+ $text .= $char;
+ $pos++;
+ $char = substr($structure, $pos, 1);
}
+ $structure = substr($structure, strlen($text));
}
- } else {
- $msg[0]["BODY"][0] = "<B><FONT COLOR=DD0000>This attachment is of an unknown format: $type0/$type1</FONT></B>";
- }
+ if ($debug_mime) echo "<tt>$elem_num : $text</tt><br>";
+
+ // This is where all the text parts get put into the header
+ switch ($elem_num) {
+ case 1:
+ $msg->header->type0 = $text;
+ if ($debug_mime) echo "<tt>type0 = $text</tt><br>";
+ break;
+ case 2:
+ $msg->header->type1 = $text;
+ if ($debug_mime) echo "<tt>type1 = $text</tt><br>";
+ break;
+ case 5:
+ $msg->header->description = $text;
+ if ($debug_mime) echo "<tt>description = $text</tt><br>";
+ break;
+ case 6:
+ $msg->header->encoding = $text;
+ if ($debug_mime) echo "<tt>encoding = $text</tt><br>";
+ break;
+ case 7:
+ $msg->header->size = $text;
+ if ($debug_mime) echo "<tt>size = $text</tt><br>";
+ break;
+ default:
+ if ($msg->header->type0 == "text" && $elem_num == 8) {
+ // This is a plain text message, so lets get the number of lines
+ // that it contains.
+ $msg->header->num_lines = $text;
+ if ($debug_mime) echo "<tt>num_lines = $text</tt><br>";
+ } else if ($msg->header->type0 == "message" && $msg->header->type1 == "rfc822" && $elem_num == 8) {
+ // This is an encapsulated message, so lets start all over again and
+ // parse this message adding it on to the existing one.
+ $structure = trim($structure);
+ if (substr($structure, 0, 1) == "(") {
+ $e = mime_match_parenthesis (0, $structure);
+ $structure = substr($structure, 0, $e);
+ $structure = substr($structure, 1);
+ $m = mime_parse_structure($structure, $msg->header->entity_id);
+
+ // the following conditional is there to correct a bug that wasn't
+ // incrementing the entity IDs correctly because of the special case
+ // that message/rfc822 is. This fixes it fine.
+ if (substr($structure, 1, 1) != "(")
+ $m->header->entity_id = mime_increment_id(mime_new_element_level($ent_id));
+
+ // Now we'll go through and reformat the results.
+ if ($m->entities) {
+ for ($i=0; $i < count($m->entities); $i++) {
+ $msg->addEntity($m->entities[$i]);
+ }
+ } else {
+ $msg->addEntity($m);
+ }
+ $structure = "";
+ }
+ }
+ break;
+ }
+ $elem_num++;
+ $text = "";
+ }
+ // loop through the additional properties and put those in the various headers
+ if ($msg->header->type0 != "message") {
+ for ($i=0; $i < count($properties); $i++) {
+ $msg->header->{$properties[$i]["name"]} = $properties[$i]["value"];
+ if ($debug_mime) echo "<tt>".$properties[$i]["name"]." = " . $properties[$i]["value"] . "</tt><br>";
+ }
+ }
return $msg;
}
- function formatBody($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"];
+ // I did most of the MIME stuff yesterday (June 20, 2000), but I couldn't
+ // figure out how to do this part, so I decided to go to bed. I woke up
+ // in the morning and had a flash of insight. I went to the white-board
+ // and scribbled it out, then spent a bit programming it, and this is the
+ // result. Nothing complicated, but I think my brain was fried yesterday.
+ // Funny how that happens some times.
+ //
+ // This gets properties in a nested parenthesisized list. For example,
+ // this would get passed something like: ("attachment" ("filename" "luke.tar.gz"))
+ // This returns an array called $props with all paired up properties.
+ // It ignores the "attachment" for now, maybe that should change later
+ // down the road. In this case, what is returned is:
+ // $props[0]["name"] = "filename";
+ // $props[0]["value"] = "luke.tar.gz";
+ function mime_get_props ($props, $structure) {
+ global $debug_mime;
+ while (strlen($structure) > 0) {
+ $structure = trim($structure);
+ $char = substr($structure, 0, 1);
+
+ if ($char == "\"") {
+ $pos = 1;
+ $char = substr($structure, $pos, 1);
+ while ($char != "\"" && $pos < strlen($structure)) {
+ $tmp .= $char;
+ $pos++;
+ $char = substr($structure, $pos, 1);
+ }
+ $structure = trim(substr($structure, strlen($tmp) + 2));
+ $char = substr($structure, 0, 1);
+
+ if ($char == "\"") {
+ $pos = 1;
+ $char = substr($structure, $pos, 1);
+ while ($char != "\"" && $pos < strlen($structure)) {
+ $value .= $char;
+ $pos++;
+ $char = substr($structure, $pos, 1);
+ }
+ $structure = trim(substr($structure, strlen($tmp) + 2));
+
+ $k = count($props);
+ $props[$k]["name"] = $tmp;
+ $props[$k]["value"] = $value;
+ } else if ($char == "(") {
+ $end = mime_match_parenthesis (0, $structure);
+ $sub = substr($structure, 1, $end-1);
+ $props = mime_get_props($props, $sub);
+ $structure = substr($structure, strlen($sub) + 2);
+ }
+ return $props;
+ } else if ($char == "(") {
+ $end = mime_match_parenthesis (0, $structure);
+ $sub = substr($structure, 1, $end-1);
+ $props = mime_get_props($props, $sub);
+ $structure = substr($structure, strlen($sub) + 2);
+ return $props;
+ } else {
+ return $props;
}
}
+ }
- for ($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;
+ // Matches parenthesis. It will return the position of the matching
+ // parenthesis in $structure. For instance, if $structure was:
+ // ("text" "plain" ("val1name", "1") nil ... )
+ // x x
+ // then this would return 42 to match up those two.
+ function mime_match_parenthesis ($pos, $structure) {
+ $char = substr($structure, $pos, 1);
+
+ // ignore all extra characters
+ while ($pos < strlen($structure)) {
+ $pos++;
+ $char = substr($structure, $pos, 1);
+ if ($char == ")") {
+ return $pos;
+ } else if ($char == "(") {
+ $pos = mime_match_parenthesis ($pos, $structure);
}
}
+ }
+
+ function mime_fetch_body ($imap_stream, $id, $ent_id) {
+ // do a bit of error correction. If we couldn't find the entity id, just guess
+ // that it is the first one. That is usually the case anyway.
+ if (!$ent_id) $ent_id = 1;
+
+ fputs ($imap_stream, "a001 FETCH $id BODY[$ent_id]\r\n");
+ $topline = fgets ($imap_stream, 1024);
+ $size = substr ($topline, strpos($topline, "{")+1);
+ $size = substr ($size, 0, strpos($size, "}"));
+ $read = fread ($imap_stream, $size);
+ return $read;
+ }
+
+ /* -[ END MIME DECODING ]----------------------------------------------------------- */
- for ($i = 0; $i < count($message["ENTITIES"]); $i++) {
- $pos = count($body);
- if ($message["ENTITIES"][$i]["TYPE0"] != "text") {
- $body[$pos] = "<BR><TT><U><B>ATTACHMENTS:</B></U></TT><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, $header) {
+ global $username, $key, $imapServerAddress, $imapPort;
+ $imap_stream = sqimap_login($username, $key, $imapServerAddress, $imapPort, 0);
+ sqimap_mailbox_select($imap_stream, $header->mailbox);
+ $struct = mime_structure ($imap_stream, $header);
+ sqimap_logout($imap_stream);
+ return $struct;
+ }
+
+ // This is here for debugging purposese. It will print out a list
+ // of all the entity IDs that are in the $message object.
+ function listEntities ($message) {
+ if ($message) {
+ if ($message->header->entity_id)
+ echo "<tt>" . $message->header->entity_id . " : " . $message->header->type0 . "/" . $message->header->type1 . "<br>";
+ for ($i = 0; $message->entities[$i]; $i++) {
+ $msg = listEntities($message->entities[$i], $ent_id);
+ if ($msg)
+ return $msg;
}
}
+ }
+
+ // returns a $message object for a particular entity id
+ function getEntity ($message, $ent_id) {
+ if ($message) {
+ if ($message->header->entity_id == $ent_id && strlen($ent_id) == strlen($message->header->entity_id)) {
+ return $message;
+ } else {
+ for ($i = 0; $message->entities[$i]; $i++) {
+ $msg = getEntity ($message->entities[$i], $ent_id);
+ if ($msg)
+ return $msg;
+ }
+ }
+ }
+ }
- for ($i = 0; $i < count($message["ENTITIES"]); $i++) {
- $pos = count($body);
- if ($message["ENTITIES"][$i]["TYPE0"] != "text") {
- if ($message["ENTITIES"][$i]["TYPE0"] == "image") {
- $body[$pos] = "<TT> Image: " . strtoupper($message["ENTITIES"][$i]["TYPE1"]) . "</TT><BR>";
- } else {
- $body[$pos] = "<TT> Unknown Type: " . $message["ENTITIES"][$i]["TYPE0"] . "/" . $message["ENTITIES"][$i]["TYPE1"] . "</TT><BR>";
+ // figures out what entity to display and returns the $message object
+ // for that entity.
+ function findDisplayEntity ($message) {
+ if ($message) {
+ if ($message->header->type0 == "text") {
+ if ($message->header->type1 == "plain" ||
+ $message->header->type1 == "html") {
+ return $message->header->entity_id;
}
- }
+ } else {
+ for ($i=0; $message->entities[$i]; $i++) {
+ return findDisplayEntity($message->entities[$i]);
+ }
+ }
}
+ }
+ /** 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, $color, $wrap_at) {
+ // 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.
+ global $username, $key, $imapServerAddress, $imapPort;
+
+ $id = $message->header->id;
+ $urlmailbox = urlencode($message->header->mailbox);
+
+ $imap_stream = sqimap_login($username, $key, $imapServerAddress, $imapPort, 0);
+ sqimap_mailbox_select($imap_stream, $message->header->mailbox);
+
+ $ent_num = findDisplayEntity ($message);
+ $body = mime_fetch_body ($imap_stream, $id, $ent_num);
+ sqimap_logout($imap_stream);
+
+ // If there are other types that shouldn't be formatted, add
+ // them here
+ if ($message->header->type1 != "html") {
+ $body = translateText($body, $wrap_at, $charset);
+ }
+
+ $body .= "<SMALL><CENTER><A HREF=\"../src/download.php?absolute_dl=true&passed_id=$id&passed_ent_id=$ent_num&mailbox=$urlmailbox\">". _("Download this as a file") ."</A></CENTER><BR></SMALL>";
+
+ /** Display the ATTACHMENTS: message if there's more than one part **/
+ if ($message->entities) {
+ $body .= "<TABLE WIDTH=100% CELLSPACING=0 CELLPADDING=4 BORDER=0><TR><TD BGCOLOR=\"$color[0]\">";
+ $body .= "<TT><B>ATTACHMENTS:</B></TT>";
+ $body .= "</TD></TR><TR><TD BGCOLOR=\"$color[0]\">";
+ $num = 0;
+
+ /** make this recurisve at some point **/
+ $body .= formatAttachments ($message, $ent_num, $message->header->mailbox, $id);
+ $body .= "</TD></TR></TABLE>";
+ }
return $body;
}
+ // A recursive function that returns a list of attachments with links
+ // to where to download these attachments
+ function formatAttachments ($message, $ent_id, $mailbox, $id) {
+ if ($message) {
+ if (!$message->entities) {
+ $type0 = strtolower($message->header->type0);
+ $type1 = strtolower($message->header->type1);
+
+ if ($message->header->entity_id != $ent_id) {
+ $filename = $message->header->filename;
+ if (trim($filename) == "") {
+ $display_filename = "untitled-".$message->header->entity_id;
+ } else {
+ $display_filename = $filename;
+ }
+
+ $urlMailbox = urlencode($mailbox);
+ $ent = urlencode($message->header->entity_id);
+ $body .= "<TT> <A HREF=\"../src/download.php?passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent\">" . $display_filename . "</A> (TYPE: $type0/$type1)";
+ if ($message->header->description)
+ $body .= " <b>" . htmlspecialchars($message->header->description)."</b>";
+ if ($message->header->type0 == "image" &&
+ ($message->header->type1 == "jpg" ||
+ $message->header->type1 == "jpeg" ||
+ $message->header->type1 == "gif" ||
+ $message->header->type1 == "png"))
+ $body .= " (<a href=\"../src/download.php?passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent&view=true\">"._("view")."</a>)\n";
+ $body .= "</TT><BR>";
+ $num++;
+ }
+ return $body;
+ } else {
+ for ($i = 0; $i < count($message->entities); $i++) {
+ $body .= formatAttachments ($message->entities[$i], $ent_id, $mailbox, $id);
+ }
+ return $body;
+ }
+ }
+ }
+
+
+ /** this function decodes the body depending on the encoding type. **/
function decodeBody($body, $encoding) {
$encoding = strtolower($encoding);
- if ($encoding == "us-ascii") {
- $newbody = $body; // if only they all were this easy
- } else if ($encoding == "quoted-printable") {
- for ($q=0; $q < count($body); $q++) {
- if (substr(trim($body[$q]), -1) == "=") {
- $body[$q] = trim($body[$q]);
- $body[$q] = substr($body[$q], 0, strlen($body[$q])-1);
- } else if (substr(trim($body[$q]), -3) == "=20") {
- $body[$q] = trim($body[$q]);
- $body[$q] = substr($body[$q], 0, strlen($body[$q])-3);
- $body[$q] = "$body[$q]\n"; // maybe should be \n.. dunno
- }
+
+ if ($encoding == "quoted-printable") {
+ $body = quoted_printable_decode($body);
+
+ while (ereg("=\n", $body))
+ $body = ereg_replace ("=\n", "", $body);
+ } else if ($encoding == "base64") {
+ $body = base64_decode($body);
+ }
+
+ // All other encodings are returned raw.
+ return $body;
+ }
+
+
+ // This functions decode strings that is encoded according to
+ // RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text).
+ function decodeHeader ($string) {
+ if (eregi('=\?([^?]+)\?(q|b)\?([^?]+)\?=',
+ $string, $res)) {
+ if (ucfirst($res[2]) == "B") {
+ $replace = base64_decode($res[3]);
+ } else {
+ $replace = ereg_replace("_", " ", $res[3]);
+ $replace = quoted_printable_decode($replace);
}
- for ($q=0;$q < count($body);$q++) {
- $body[$q] = ereg_replace("=3D", "=", $body[$q]);
+
+ $replace = charset_decode ($res[1], $replace);
+
+ $string = eregi_replace
+ ('=\?([^?]+)\?(q|b)\?([^?]+)\?=',
+ $replace, $string);
+ // In case there should be more encoding in the string: recurse
+ return (decodeHeader($string));
+ } else
+ return ($string);
+ }
+
+ // Encode a string according to RFC 1522 for use in headers if it
+ // contains 8-bit characters or anything that looks like it should
+ // be encoded.
+ function encodeHeader ($string) {
+ global $default_charset;
+
+ // Encode only if the string contains 8-bit characters or =?
+ if (ereg("([\200-\377])|=\\?", $string)) {
+ $newstring = "=?$default_charset?Q?";
+
+ // First the special characters
+ $string = str_replace("=", "=3D", $string);
+ $string = str_replace("?", "=3F", $string);
+ $string = str_replace("_", "=5F", $string);
+ $string = str_replace(" ", "_", $string);
+
+
+ while (ereg("([\200-\377])", $string, $regs)) {
+ $replace = $regs[1];
+ $insert = "=" . strtoupper(bin2hex($replace));
+ $string = str_replace($replace, $insert, $string);
}
- $newbody = $body;
- } else {
- $newbody = $body;
+
+ $newstring = "=?$default_charset?Q?".$string."?=";
+
+ return $newstring;
}
- return $newbody;
+
+ return $string;
}
-?>
\ No newline at end of file
+
+?>
projects / squirrelmail.git / blobdiff