<?php
- /** mime.php
- **
- ** This contains the functions necessary to detect and decode MIME
- ** messages.
- **
+
+/**
+ * mime.php
+ *
+ * Copyright (c) 1999-2002 The SquirrelMail Project Team
+ * Licensed under the GNU GPL. For full terms see the file COPYING.
+ *
+ * This contains the functions necessary to detect and decode MIME
+ * messages.
+ *
+ * $Id$
+ */
+
+require_once('../functions/imap.php');
+require_once('../functions/attachment_common.php');
+
+/** 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 = '';
+ var $encoding = '', $size = 0, $to = array(), $from = '', $date = '';
+ var $cc = array(), $bcc = array(), $reply_to = '', $subject = '';
+ var $id = 0, $mailbox = '', $description = '', $filename = '';
+ var $entity_id = 0, $message_id = 0, $name = '';
+ // var $priority = "";
+}
+
+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 $entities = array();
+
+ function addEntity ($msg) {
+ $this->entities[] = $msg;
+ }
+}
- $debug_mime = false;
- $mime_php = true;
-
- if (!isset($i18n_php))
- include "../functions/i18n.php";
- if (!isset($imap_php))
- include "../functions/imap.php";
- if (!isset($config_php))
- include "../config/config.php";
-
-
- /** 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, $charset;
- }
-
- 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);
- $response = substr($read, 0, 4);
- while ($response != "a001") {
- $bodystructure = $read;
- $read = fgets ($imap_stream, 10000);
- $response = substr($read, 0, 4);
- }
- $read = strtolower($bodystructure);
-
- 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, $read);
- }
+/* --------------------------------------------------------------------------------- */
+/* MIME DECODING */
+/* --------------------------------------------------------------------------------- */
- if ($debug_mime) echo "<tt>$read</tt><br><br>";
-
- $msg = mime_parse_structure ($read, 0);
- $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, $end+1, 1) == "(");
- } else {
- // parse the elements
- if ($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>";
- }
-
- // 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 $new;
- }
-
- // See comment for mime_increment_id().
- // This adds another level on to the entity_id changing 1.3 to 1.3.0
- // NOTE: 1.3.0 is not a valid element ID. It MUST be incremented
- // before it can be used. I left it this way so as not to have
- // to make a special case if it is the first entity_id. It
- // always increments it, and that works fine.
- function mime_new_element_level ($id) {
- if (!$id) $id = 0;
- else $id = $id . ".0";
-
- return $id;
- }
-
- function mime_get_element (&$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 (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 {
- // 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($text));
- }
- if ($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>";
- }
- }
+/* 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) {
- return $msg;
- }
-
- // 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 .= $char;
+ sqimap_messages_flag ($imap_stream, $header->id, $header->id, 'Seen');
+ $ssid = sqimap_session_id();
+ $lsid = strlen( $ssid );
+ $id = $header->id;
+ fputs ($imap_stream, "$ssid FETCH $id BODYSTRUCTURE\r\n");
+ //
+ // This should use sqimap_read_data instead of reading it itself
+ //
+ $read = fgets ($imap_stream, 10000);
+ $bodystructure = '';
+ while ( substr($read, 0, $lsid) <> $ssid &&
+ !feof( $imap_stream ) ) {
+ $bodystructure .= $read;
+ $read = fgets ($imap_stream, 10000);
+ }
+ $read = $bodystructure;
+
+ // isolate the body structure and remove beginning and end parenthesis
+ $read = trim(substr ($read, strpos(strtolower($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);
+ }
+
+ $msg = mime_parse_structure ($read, 0);
+ $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) {
+
+ $msg = new message();
+ if ($structure{0} == '(') {
+ $ent_id = mime_new_element_level($ent_id);
+ $start = $end = -1;
+ do {
+ $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 ($structure{$end+1} == '(');
+ } else {
+ // parse the elements
+ $msg = mime_get_element ($structure, $msg, $ent_id);
+ }
+ return $msg;
+}
+
+/* Increments the element ID. An element id can look like any of
+ * the following: 1, 1.2, 4.3.2.4.1, etc. This function increments
+ * the last number of the element id, changing 1.2 to 1.3.
+ */
+function mime_increment_id ($id) {
+
+ if (strpos($id, ".")) {
+ $first = substr($id, 0, strrpos($id, "."));
+ $last = substr($id, strrpos($id, ".")+1);
+ $last++;
+ $new = $first . "." .$last;
+ } else {
+ $new = $id + 1;
+ }
+
+ return $new;
+}
+
+/*
+ * See comment for mime_increment_id().
+ * This adds another level on to the entity_id changing 1.3 to 1.3.0
+ * NOTE: 1.3.0 is not a valid element ID. It MUST be incremented
+ * before it can be used. I left it this way so as not to have
+ * to make a special case if it is the first entity_id. It
+ * always increments it, and that works fine.
+ */
+function mime_new_element_level ($id) {
+
+ if (!$id) {
+ $id = 0;
+ } else {
+ $id = $id . '.0';
+ }
+
+ return( $id );
+}
+
+function mime_get_element (&$structure, $msg, $ent_id) {
+
+ $elem_num = 1;
+ $msg->header = new msg_header();
+ $msg->header->entity_id = $ent_id;
+ $properties = array();
+
+ while (strlen($structure) > 0) {
+ $structure = trim($structure);
+ $char = $structure{0};
+
+ if (strtolower(substr($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;
+ $text = '';
+ while ( ($char = $structure{$pos} ) <> '"' && $pos < strlen($structure)) {
+ $text .= $char;
+ $pos++;
+ }
+ $structure = substr($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 {
+ // loop through until we find a space or an end parenthesis
+ $pos = 0;
+ $char = $structure{$pos};
+ $text = '';
+ while ($char != ' ' && $char != ')' && $pos < strlen($structure)) {
+ $text .= $char;
+ $pos++;
+ $char = $structure{$pos};
+ }
+ $structure = substr($structure, strlen($text));
+ }
+
+ // This is where all the text parts get put into the header
+ switch ($elem_num) {
+ case 1:
+ $msg->header->type0 = strtolower($text);
+ break;
+ case 2:
+ $msg->header->type1 = strtolower($text);
+ break;
+ case 4: // Id
+ // Invisimail enclose images with <>
+ $msg->header->id = str_replace( '<', '', str_replace( '>', '', $text ) );
+ break;
+ case 5:
+ $msg->header->description = $text;
+ break;
+ case 6:
+ $msg->header->encoding = strtolower($text);
+ break;
+ case 7:
+ $msg->header->size = $text;
+ break;
+ default:
+ if ($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 = $text;
+
+ } else if ($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 ( $structure{0} == '(' ) {
+ $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'];
+ }
+ }
+
+ return $msg;
+}
+
+/*
+ * 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, $structure) {
+
+ while (strlen($structure) > 0) {
+ $structure = trim($structure);
+ $char = $structure{0};
+
+ if ($char == '"') {
+ $pos = 1;
+ $tmp = '';
+ while ( ( $char = $structure{$pos} ) != '"' &&
+ $pos < strlen($structure)) {
+ $tmp .= $char;
+ $pos++;
+ }
+ $structure = trim(substr($structure, strlen($tmp) + 2));
+ $char = $structure{0};
+
+ if ($char == '"') {
+ $pos = 1;
+ $value = '';
+ while ( ( $char = $structure{$pos} ) != '"' &&
+ $pos < strlen($structure) ) {
+ $value .= $char;
+ $pos++;
+ }
+ $structure = trim(substr($structure, strlen($tmp) + 2));
+
+ $k = count($props);
+ $props[$k]['name'] = strtolower($tmp);
+ $props[$k]['value'] = $value;
+ } else if ($char == '(') {
+ $end = mime_match_parenthesis (0, $structure);
+ $sub = substr($structure, 1, $end-1);
+ if (! isset($props))
+ $props = array();
+ $props = mime_get_props($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;
+ }
+ }
+}
+
+/*
+ * 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) {
+
+ $j = strlen( $structure );
+
+ // ignore all extra characters
+ // If inside of a string, skip string -- Boundary IDs and other
+ // things can have ) in them.
+ if ( $structure{$pos} != '(' ) {
+ return( $j );
+ }
+
+ while ( $pos < $j ) {
+ $pos++;
+ if ($structure{$pos} == ')') {
+ return $pos;
+ } elseif ($structure{$pos} == '"') {
+ $pos++;
+ while ( $structure{$pos} != '"' &&
+ $pos < $j ) {
+ if (substr($structure, $pos, 2) == '\\"') {
$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($sub) + 2);
+ } elseif (substr($structure, $pos, 2) == '\\\\') {
+ $pos++;
+ }
+ $pos++;
}
- 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;
- }
- }
- }
-
- // 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 == "(") {
+ } elseif ( $structure{$pos} == '(' ) {
$pos = mime_match_parenthesis ($pos, $structure);
- }
- }
- }
+ }
+ }
+ echo _("Error decoding mime structure. Report this as a bug!") . '<br>';
+ return( $pos );
+}
- function mime_fetch_body ($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) $ent_id = 1;
+function mime_fetch_body ($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;
+ $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id]", true, $response, $message);
+ $topline = array_shift($data);
+ while (! ereg('\\* [0-9]+ FETCH ', $topline) && $data)
+ $topline = array_shift($data);
+ $wholemessage = implode('', $data);
+ if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) {
+ $ret = substr( $wholemessage, 0, $regs[1] );
+ /*
+ There is some information in the content info header that could be important
+ in order to parse html messages. Let's get them here.
+ */
+ if ( $ret{0} == '<' ) {
+ $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message);
+ $base = '';
+ $k = 10;
+ foreach( $data as $d ) {
+ if ( substr( $d, 0, 13 ) == 'Content-Base:' ) {
+ $j = strlen( $d );
+ $i = 13;
+ $base = '';
+ while ( $i < $j &&
+ ( !isNoSep( $d{$i} ) || $d{$i} == '"' ) )
+ $i++;
+ while ( $i < $j ) {
+ if ( isNoSep( $d{$i} ) )
+ $base .= $d{$i};
+ $i++;
+ }
+ $k = 0;
+ } elseif ( $k == 1 && !isnosep( $d{0} ) ) {
+ $base .= substr( $d, 1 );
+ }
+ $k++;
+ }
+ if ( $base <> '' )
+
+ $ret = "<base href=\"$base\">" . $ret;
+ }
+ } else if (ereg('"([^"]*)"', $topline, $regs)) {
+ $ret = $regs[1];
+ } else {
+ global $where, $what, $mailbox, $passed_id, $startMessage;
+ $par = "mailbox=".urlencode($mailbox)."&passed_id=$passed_id";
+ if (isset($where) && isset($what)) {
+ $par .= "&where=".urlencode($where)."&what=".urlencode($what);
+ } else {
+ $par .= "&startMessage=$startMessage&show_more=0";
+ }
+ $par .= '&response='.urlencode($response).'&message='.urlencode($message).
+ '&topline='.urlencode($topline);
- 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 $read;
- }
+ echo '<b><font color=$color[2]>' .
+ _("Body retrieval error. The reason for this is most probably that the message is malformed. Please help us making future versions better by submitting this message to the developers knowledgebase!") .
+ "<A HREF=\"../src/retrievalerror.php?$par\">Submit message</A><BR>" .
+ '<tt>' . _("Response:") . "$response<BR>" .
+ _("Message:") . " $message<BR>" .
+ _("FETCH line:") . " $topline<BR></tt></font></b>";
- /* -[ END MIME DECODING ]----------------------------------------------------------- */
+ $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message);
+ array_shift($data);
+ $wholemessage = implode('', $data);
+ $ret = "---------------\n$wholemessage";
+ }
+ return( $ret );
+}
- /** This is the first function called. It decides if this is a multipart
- message or if it should be handled as a single entity
- **/
- function decodeMime ($imap_stream, $body, $header) {
- global $username, $key, $imapServerAddress, $imapPort;
- return mime_structure ($imap_stream, $header);
- }
-
- // 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 $msg;
- }
+function mime_print_body_lines ($imap_stream, $id, $ent_id, $encoding) {
+ // do a bit of error correction. If we couldn't find the entity id, just guess
+ // that it is the first one. That is usually the case anyway.
+ if (!$ent_id) {
+ $ent_id = 1;
+ }
+ $sid = sqimap_session_id();
+ // Don't kill the connection if the browser is over a dialup
+ // and it would take over 30 seconds to download it.
+
+ // don´t call set_time_limit in safe mode.
+ if (!ini_get("safe_mode")) {
+ set_time_limit(0);
+ }
+
+ fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id]\r\n");
+ $cnt = 0;
+ $continue = true;
+ $read = fgets ($imap_stream,4096);
+ // This could be bad -- if the section has sqimap_session_id() . ' OK'
+ // or similar, it will kill the download.
+ while (!ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) {
+ if (trim($read) == ')==') {
+ $read1 = $read;
+ $read = fgets ($imap_stream,4096);
+ if (ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) {
+ return;
+ } else {
+ echo decodeBody($read1, $encoding) .
+ decodeBody($read, $encoding);
+ }
+ } else if ($cnt) {
+ echo decodeBody($read, $encoding);
}
- }
+ $read = fgets ($imap_stream,4096);
+ $cnt++;
+ }
+}
+
+/* -[ END MIME DECODING ]----------------------------------------------------------- */
+
- // 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($message->header->entity_id)) {
+
+/* This is the first function called. It decides if this is a multipart
+ message or if it should be handled as a single entity
+ */
+function decodeMime ($imap_stream, &$header) {
+ global $username, $key, $imapServerAddress, $imapPort;
+ return mime_structure ($imap_stream, $header);
+}
+
+// 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 $msg;
+ } else {
+ for ($i = 0; isset($message->entities[$i]); $i++) {
+ $msg = getEntity ($message->entities[$i], $ent_id);
+ if ($msg) {
+ return $msg;
+ }
}
- }
- }
- }
-
- // 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;
+ }
+ }
+}
+
+/*
+ * figures out what entity to display and returns the $message object
+ * for that entity.
+ */
+function findDisplayEntity ($message, $textOnly = 1) {
+ global $show_html_default;
+
+ $entity = 0;
+
+ if ($message) {
+ if ( $message->header->type0 == 'multipart' &&
+ ( $message->header->type1 == 'alternative' ||
+ $message->header->type1 == 'related' ) &&
+ $show_html_default && ! $textOnly ) {
+ $entity = findDisplayEntityHTML($message);
+ }
+
+ // Show text/plain or text/html -- the first one we find.
+ if ( $entity == 0 &&
+ $message->header->type0 == 'text' &&
+ ( $message->header->type1 == 'plain' ||
+ $message->header->type1 == 'html' ) &&
+ isset($message->header->entity_id) ) {
+ $entity = $message->header->entity_id;
+ }
+
+ $i = 0;
+ while ($entity == 0 && isset($message->entities[$i]) ) {
+ $entity = findDisplayEntity($message->entities[$i], $textOnly);
+ $i++;
+ }
+ }
+
+ return( $entity );
+}
+
+/* Shows the HTML version */
+function findDisplayEntityHTML ($message) {
+
+ if ( $message->header->type0 == 'text' &&
+ $message->header->type1 == 'html' &&
+ isset($message->header->entity_id)) {
+ return $message->header->entity_id;
+ }
+ for ($i = 0; isset($message->entities[$i]); $i ++) {
+ $entity = findDisplayEntityHTML($message->entities[$i]);
+ if ($entity != 0) {
+ return $entity;
+ }
+ }
+
+ return 0;
+}
+
+/* This returns a parsed string called $body. That string can then
+be displayed as the actual message in the HTML. It contains
+everything needed, including HTML Tags, Attachments at the
+bottom, etc.
+*/
+function formatBody($imap_stream, $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 $startMessage, $username, $key, $imapServerAddress, $imapPort,
+ $show_html_default;
+
+ $id = $message->header->id;
+ $urlmailbox = urlencode($message->header->mailbox);
+
+ // Get the right entity and redefine message to be this entity
+ // Pass the 0 to mean that we want the 'best' viewable one
+ $ent_num = findDisplayEntity ($message, 0);
+ $body_message = getEntity($message, $ent_num);
+ if (($body_message->header->type0 == 'text') ||
+ ($body_message->header->type0 == 'rfc822')) {
+
+ $body = mime_fetch_body ($imap_stream, $id, $ent_num);
+ $body = decodeBody($body, $body_message->header->encoding);
+ $hookResults = do_hook("message_body", $body);
+ $body = $hookResults[1];
+
+ // If there are other types that shouldn't be formatted, add
+ // them here
+ if ($body_message->header->type1 == 'html') {
+ if ( $show_html_default <> 1 ) {
+ $body = strip_tags( $body );
+ translateText($body, $wrap_at, $body_message->header->charset);
+ } else {
+ $body = MagicHTML( $body, $id );
}
- } else {
- for ($i=0; $message->entities[$i]; $i++) {
- return findDisplayEntity($message->entities[$i]);
- }
- }
- }
- }
+ } else {
+ translateText($body, $wrap_at, $body_message->header->charset);
+ }
+
+ $body .= "<SMALL><CENTER><A HREF=\"../src/download.php?absolute_dl=true&passed_id=$id&passed_ent_id=$ent_num&mailbox=$urlmailbox&showHeaders=1\">". _("Download this as a file") ."</A></CENTER><BR></SMALL>";
+
+ /** Display the ATTACHMENTS: message if there's more than one part **/
+ $body .= "</TD></TR></TABLE>";
+ if (isset($message->entities[0])) {
+ $body .= formatAttachments ($message, $ent_num, $message->header->mailbox, $id);
+ }
+ $body .= "</TD></TR></TABLE>";
+ } else {
+ $body = formatAttachments ($message, -1, $message->header->mailbox, $id);
+ }
+ return ($body);
+}
- /** This returns a parsed string called $body. That string can then
- be displayed as the actual message in the HTML. It contains
- everything needed, including HTML Tags, Attachments at the
- bottom, etc.
- **/
- function formatBody($imap_stream, $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);
-
- // Get the right entity and redefine message to be this entity
- $ent_num = findDisplayEntity ($message);
- $body_message = getEntity($message, $ent_num);
-
- $body = mime_fetch_body ($imap_stream, $id, $ent_num);
- $body = decodeBody($body, $body_message->header->encoding);
-
- // If there are other types that shouldn't be formatted, add
- // them here
- if ($message->header->type1 != "html") {
- $body = translateText($body, $wrap_at, $body_message->header->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;
-
- $body .= formatAttachments ($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) {
- global $where, $what;
- if ($message) {
- if (!$message->entities) {
- $type0 = strtolower($message->header->type0);
- $type1 = strtolower($message->header->type1);
-
- if ($message->header->entity_id != $ent_id) {
- $filename = decodeHeader($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);
- if ($where && $what) {
- // from a search
- $body .= "<TT> <A HREF=\"../src/download.php?where=".urlencode($where)."&what=".urlencode($what)."&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent\">" . $display_filename . "</A> (TYPE: $type0/$type1)";
- } else {
- $body .= "<TT> <A HREF=\"../src/download.php?passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent\">" . $display_filename . "</A> (TYPE: $type0/$type1)";
- }
- if ($message->header->description)
- $body .= " <b>" . htmlspecialchars($message->header->description)."</b>";
- $body .= " (<a href=\"../src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent\">"._("download")."</a>)\n";
- $body .= "</TT><BR>";
- $num++;
+/*
+ * A recursive function that returns a list of attachments with links
+ * to where to download these attachments
+ */
+function formatAttachments ($message, $ent_id, $mailbox, $id) {
+ global $where, $what;
+ global $startMessage, $color;
+ static $ShownHTML = 0;
+
+ $body = "";
+ if ($ShownHTML == 0) {
+ $ShownHTML = 1;
+
+ $body .= "<TABLE WIDTH=\"100%\" CELLSPACING=0 CELLPADDING=2 BORDER=0 BGCOLOR=\"$color[0]\"><TR>\n" .
+ "<TH ALIGN=\"left\" BGCOLOR=\"$color[9]\"><B>\n" .
+ _("Attachments") . ':' .
+ "</B></TH></TR><TR><TD>\n" .
+ "<TABLE CELLSPACING=0 CELLPADDING=1 BORDER=0>\n" .
+ formatAttachments ($message, $ent_id, $mailbox, $id) .
+ "</TABLE></TD></TR></TABLE>";
+
+ return( $body );
+ }
+
+ if ($message) {
+ if (!$message->entities) {
+ $type0 = strtolower($message->header->type0);
+ $type1 = strtolower($message->header->type1);
+ $name = decodeHeader($message->header->name);
+
+ if ($message->header->entity_id != $ent_id) {
+ $filename = decodeHeader($message->header->filename);
+ if (trim($filename) == '') {
+ if (trim($name) == '') {
+ if ( trim( $message->header->id ) == '' )
+ $display_filename = 'untitled-[' . $message->header->entity_id . ']' ;
+ else
+ $display_filename = 'cid: ' . $message->header->id;
+ // $display_filename = 'untitled-[' . $message->header->entity_id . ']' ;
+ } else {
+ $display_filename = $name;
+ $filename = $name;
+ }
+ } else {
+ $display_filename = $filename;
+ }
+
+ $urlMailbox = urlencode($mailbox);
+ $ent = urlencode($message->header->entity_id);
+
+ $DefaultLink =
+ "../src/download.php?startMessage=$startMessage&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent";
+ if ($where && $what)
+ $DefaultLink .= '&where=' . urlencode($where) . '&what=' . urlencode($what);
+ $Links['download link']['text'] = _("download");
+ $Links['download link']['href'] =
+ "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent";
+ $ImageURL = '';
+
+ $HookResults = do_hook("attachment $type0/$type1", $Links,
+ $startMessage, $id, $urlMailbox, $ent, $DefaultLink,
+ $display_filename, $where, $what);
+
+ $Links = $HookResults[1];
+ $DefaultLink = $HookResults[6];
+
+ $body .= '<TR><TD> </TD><TD>' .
+ "<A HREF=\"$DefaultLink\">$display_filename</A> </TD>" .
+ '<TD><SMALL><b>' . show_readable_size($message->header->size) .
+ '</b> </small></TD>' .
+ "<TD><SMALL>[ $type0/$type1 ] </SMALL></TD>" .
+ '<TD><SMALL>';
+ if ($message->header->description)
+ $body .= '<b>' . htmlspecialchars($message->header->description) . '</b>';
+ $body .= '</SMALL></TD><TD><SMALL> ';
+
+
+ $SkipSpaces = 1;
+ foreach ($Links as $Val) {
+ if ($SkipSpaces) {
+ $SkipSpaces = 0;
+ } else {
+ $body .= ' | ';
+ }
+ $body .= '<a href="' . $Val['href'] . '">' . $Val['text'] . '</a>';
+ }
+
+ unset($Links);
+
+ $body .= "</SMALL></TD></TR>\n";
+ }
+ } else {
+ for ($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) {
+ $body = str_replace("\r\n", "\n", $body);
+ $encoding = strtolower($encoding);
+
+ global $show_html_default;
+
+ if ($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, $utfencode=true) {
+ if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=',
+ $string, $res)) {
+ if (ucfirst($res[2]) == 'B') {
+ $replace = base64_decode($res[3]);
+ } else {
+ $replace = str_replace('_', ' ', $res[3]);
+ // Convert lowercase Quoted Printable to uppercase for
+ // quoted_printable_decode to understand it.
+ while (ereg("(=(([0-9][abcdef])|([abcdef][0-9])|([abcdef][abcdef])))", $replace, $res)) {
+ $replace = str_replace($res[1], strtoupper($res[1]), $replace);
+ }
+ $replace = quoted_printable_decode($replace);
+ }
+ /* Only encode into entities by default. Some places
+ don't need the encoding, like the compose form. */
+ if ($utfencode){
+ $replace = charset_decode ($res[1], $replace);
+ }
+
+ // Remove the name of the character set.
+ $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 =?
+ $j = strlen( $string );
+ $l = strstr($string, '=?'); // Must be encoded ?
+ $ret = '';
+ for( $i=0; $i < $j; ++$i) {
+ switch( $string{$i} ) {
+ case '=':
+ $ret .= '=3D';
+ break;
+ case '?':
+ $ret .= '=3F';
+ break;
+ case '_':
+ $ret .= '=5F';
+ break;
+ case ' ':
+ $ret .= '_';
+ break;
+ default:
+ $k = ord( $string{$i} );
+ if ( $k > 126 ) {
+ $ret .= sprintf("=%02X", $k);
+ $l = TRUE;
+ } else
+ $ret .= $string{$i};
+ }
+ }
+
+ if ( $l ) {
+ $string = "=?$default_charset?Q?$ret?=";
+ }
+
+ return( $string );
+}
+
+/*
+ Strips dangerous tags from html messages.
+*/
+function MagicHTML( $body, $id ) {
+
+ global $message, $HTTP_SERVER_VARS,
+ $attachment_common_show_images;
+
+ $attachment_common_show_images =
+ FALSE; // Don't display attached images in HTML mode
+ $j = strlen( $body ); // Legnth of the HTML
+ $ret = ''; // Returned string
+ $bgcolor = '#ffffff'; // Background style color (defaults to white)
+ $textcolor = '#000000'; // Foreground style color (defaults to black)
+ $leftmargin = ''; // Left margin style
+ $title = ''; // HTML title if any
+
+ $i = 0;
+ while ( $i < $j ) {
+ if ( $body{$i} == '<' ) {
+ $pos = $i + 1;
+ $tag = '';
+ while ($body{$pos} == ' ' || $body{$pos} == "\t" ||
+ $body{$pos} == "\n") {
+ $pos ++;
}
- return $body;
- } else {
- for ($i = 0; $i < count($message->entities); $i++) {
- $body .= formatAttachments ($message->entities[$i], $ent_id, $mailbox, $id);
+ while (strlen($tag) < 4 && $body{$pos} != ' ' &&
+ $body{$pos} != "\t" && $body{$pos} != "\n") {
+ $tag .= $body{$pos};
+ $pos ++;
}
- return $body;
- }
- }
- }
+ switch( strtoupper( $tag ) ) {
+ // Strips the entire tag and contents
+ case 'APPL':
+ case 'EMBB':
+ case 'FRAM':
+ case 'SCRI':
+ case 'OBJE':
+ $etg = '/' . $tag;
+ while ( $body{$i+1}.$body{$i+2}.$body{$i+3}.$body{$i+4}.$body{$i+5} <> $etg &&
+ $i < $j ) $i++;
+ while ( $i < $j && $body{++$i} <> '>' );
+ // $ret .= "<!-- $tag removed -->";
+ break;
+ // Substitute Title
+ case 'TITL':
+ $i += 5;
+ while ( $body{$i} <> '>' && // </title>
+ $i < $j )
+ $i++;
+ $i++;
+ $title = '';
+ while ( $body{$i} <> '<' && // </title>
+ $i < $j ) {
+ $title .= $body{$i};
+ $i++;
+ }
+ $i += 7;
+ break;
+ // Destroy these tags
+ case 'HTML':
+ case 'HEAD':
+ case '/HTM':
+ case '/HEA':
+ case '!DOC':
+ case 'META':
+ case 'DIV ':
+ case '/DIV':
+ case '!-- ':
+ $i += 4;
+ while ( $body{$i} <> '>' &&
+ $i < $j )
+ $i++;
+ // $i++;
+ break;
+ case 'STYL':
+ $i += 5;
+ while ( $body{$i} <> '>' && // </title>
+ $i < $j )
+ $i++;
+ $i++;
+ // We parse the style to look for interesting stuff
+ $styleblk = '';
+ while ( $body{$i} <> '>' &&
+ $i < $j ) {
+ // First we get the name of the style
+ $style = '';
+ while ( $body{$i} <> '>' &&
+ $body{$i} <> '<' &&
+ $body{$i} <> '{' &&
+ $i < $j ) {
+ if ( isnoSep( $body{$i} ) )
+ $style .= $body{$i};
+ $i++;
+ }
+ stripComments( $i, $j, $body );
+ $style = strtoupper( trim( $style ) );
+ if ( $style == 'BODY' ) {
+ // Next we look into the definitions of the body style
+ while ( $body{$i} <> '>' &&
+ $body{$i} <> '}' &&
+ $i < $j ) {
+ // We look for the background color if any.
+ if ( substr( $body, $i, 17 ) == 'BACKGROUND-COLOR:' ) {
+ $i += 17;
+ $bgcolor = getStyleData( $i, $j, $body );
+ } elseif ( substr( $body, $i, 12 ) == 'MARGIN-LEFT:' ) {
+ $i += 12;
+ $leftmargin = getStyleData( $i, $j, $body );
+ }
+ $i++;
+ }
+ } else {
+ // Other style are mantained
+ $styleblk .= "$style ";
+ while ( $body{$i} <> '>' &&
+ $body{$i} <> '<' &&
+ $body{$i} <> '}' &&
+ $i < $j ) {
+ $styleblk .= $body{$i};
+ $i++;
+ }
+ $styleblk .= $body{$i};
+ }
+ stripComments( $i, $j, $body );
+ if ( $body{$i} <> '>' )
+ $i++;
+ }
+ if ( $styleblk <> '' )
+ $ret .= "<style>$styleblk";
+ break;
+ case 'BODY':
+ if ( $title <> '' )
+ $ret .= '<b>' . _("Title:") . " </b>$title<br>\n";
+ $ret .= "<TABLE";
+ $i += 5;
+ if (! isset($base)) {
+ $base = '';
+ }
+ $ret .= stripEvent( $i, $j, $body, $id, $base );
+ $ret .= " bgcolor=$bgcolor width=\"100%\"><tr>";
+ if ( $leftmargin <> '' )
+ $ret .= "<td width=$leftmargin> </td>";
+ $ret .= '<td>';
+ if (strtolower($bgcolor) == 'ffffff' ||
+ strtolower($bgcolor) == '#ffffff')
+ $ret .= '<font color=#000000>';
+ break;
+ case 'BASE':
+ $i += 5;
+ $base = '';
+ while ( !isNoSep( $body{$i} ) &&
+ $i < $j ) {
+ $i++;
+ }
+ if ( strcasecmp( substr( $base, 0, 4 ), 'href' ) ) {
+ $i += 5;
+ while ( !isNoSep( $body{$i} ) &&
+ $i < $j ) {
+ $i++;
+ }
+ while ( $body{$i} <> '>' &&
+ $i < $j ) {
+ if ( $body{$i} <> '"' ) {
+ $base .= $body{$i};
+ }
+ $i++;
+ }
+ // Debuging $ret .= "<!-- base == $base -->";
+ if ( strcasecmp( substr( $base, 0, 4 ), 'file' ) <> 0 ) {
+ $ret .= "\n<BASE HREF=\"$base\">\n";
+ }
+ }
+ break;
+ case '/BOD':
+ $ret .= '</font></td></tr></TABLE>';
+ $i += 6;
+ break;
+ default:
+ // Following tags can contain some event handler, lets search it
+ stripComments( $i, $j, $body );
+ if (! isset($base)) {
+ $base = '';
+ }
+ $ret .= stripEvent( $i, $j, $body, $id, $base ) . '>';
+ // $ret .= "<!-- $tag detected -->";
+ }
+ } else {
+ $ret .= $body{$i};
+ }
+ $i++;
+ }
+return( "\n\n<!-- HTML Output ahead -->\n" .
+ $ret .
+ "\n<!-- END of HTML Output --><base href=\"".
+ get_location() . '/'.
+ "\">\n\n" );
+}
- /** this function decodes the body depending on the encoding type. **/
- function decodeBody($body, $encoding) {
- $body = str_replace("\r\n", "\n", $body);
- $encoding = strtolower($encoding);
+function isNoSep( $char ) {
- if ($encoding == "quoted-printable") {
- $body = quoted_printable_decode($body);
+ switch( $char ) {
+ case ' ':
+ case "\n":
+ case "\t":
+ case "\r":
+ case '>':
+ case '"':
+ return( FALSE );
+ break;
+ default:
+ return( TRUE );
+ }
- 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]);
- // Convert lowercase Quoted Printable to uppercase for
- // quoted_printable_decode to understand it.
- while (ereg("(=([0-9][a-f])|([a-f][0-9]))", $replace, $res)) {
- $replace = str_replace($res[1], strtoupper($res[1]), $replace);
- }
- $replace = quoted_printable_decode($replace);
- }
+/*
+ The following function is usefull to remove extra data that can cause
+ html not to display properly. Especialy with MS stuff.
+*/
- $replace = charset_decode ($res[1], $replace);
+function stripComments( &$i, $j, &$body ) {
- $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);
- }
-
- $newstring = "=?$default_charset?Q?".$string."?=";
-
- return $newstring;
- }
+ while ( $body{$i}.$body{$i+1}.$body{$i+2}.$body{$i+3} == '<!--' &&
+ $i < $j ) {
+ $i += 5;
+ while ( $body{$i-2}.$body{$i-1}.$body{$i} <> '-->' &&
+ $i < $j )
+ $i++;
+ $i++;
+ }
+
+ return;
+
+}
+
+/* Gets the style data of a specific style */
+
+function getStyleData( &$i, $j, &$body ) {
+
+ // We skip spaces
+ while ( $body{$i} <> '>' && !isNoSep( $body{$i} ) &&
+ $i < $j ) {
+ $i++;
+ }
+ // And get the color
+ $ret = '';
+ while ( isNoSep( $body{$i} ) &&
+ $i < $j ) {
+ $ret .= $body{$i};
+ $i++;
+ }
+
+ return( $ret );
+}
+
+/*
+Private function for strip_dangerous_tag. Look for event based coded and "remove" it
+change on with no (onload -> noload)
+*/
+
+function stripEvent( &$i, $j, &$body, $id, $base ) {
+
+ global $message, $base_uri;
+
+ $ret = '';
+
+ while ( $body{$i} <> '>' &&
+ $i < $j ) {
+ $etg = strtolower($body{$i}.$body{$i+1}.$body{$i+2});
+ switch( $etg ) {
+ case 'src':
+ // This is probably a src specification
+ $k = $i + 3;
+ while( !isNoSep( $body{$k} )) {
+ $k++;
+ }
+ if ( $body{$k} == '=' ) {
+ /* It is indeed */
+ $k++;
+ while( !isNoSep( $body{$k} ) &&
+ $k < $j ) {
+ $k++;
+ }
+ $src = '';
+ while ( $body{$k} <> '>' && isNoSep( $body{$k} ) &&
+ $k < $j ) {
+ $src .= $body{$k};
+ $k++;
+ }
+ while( !isNoSep( $body{$k} ) &&
+ $k < $j ) {
+ $k++;
+ }
+ if ( strtolower( substr( $src, 0, 4 ) ) == 'cid:' ) {
+ $src = substr( $src, 4 );
+ $src = "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=" .
+ urlencode( $message->header->mailbox ) .
+ "&passed_ent_id=" . find_ent_id( $src, $message );
+ } else if ( strtolower( substr( $src, 0, 4 ) ) <> 'http' ||
+ stristr( $src, $base_uri ) ) {
+ /* Javascript and local urls goes out */
+ $src = '../images/' . _("sec_remove_eng.png");
+ }
+ $ret .= 'src="' . $src . '" ';
+ $i = $k - 3;
+ } else {
+ $ret .= 'src';
+ $i = $i + 3;
+ }
+
+ break;
+ case '../':
+ // Retrolinks are not allowed without a base because they mess with SM security
+ if ( $base == '' ) {
+ $i += 2;
+ } else {
+ $ret .= '.';
+ }
+ break;
+ case 'cid':
+ // Internal link
+ $k = $i-1;
+ if ( $body{$i+3} == ':') {
+ $i +=4;
+ $name = '';
+ while ( isNoSep( $body{$i} ) &&
+ $i < $j ) {
+ $name .= $body{$i++};
+ }
+ if ( $name <> '' ) {
+ $ret .= "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=" .
+ urlencode( $message->header->mailbox ) .
+ "&passed_ent_id=" . find_ent_id( $name, $message );
+ if ( $body{$k} == '"' )
+ $ret .= '" ';
+ else
+ $ret .= ' ';
+ }
+ if ( $body{$i} == '>' )
+ $i -= 1;
+ }
+ break;
+ case ' on':
+ case "\non":
+ case "\ron":
+ case "\ton":
+ $ret .= ' no';
+ $i += 2;
+ break;
+ case 'pt:':
+ if ( strcasecmp( $body{$i-4}.$body{$i-3}.$body{$i-2}.$body{$i-1}.$body{$i}.$body{$i+1}.$body{$i+2}, 'script:') == 0 ) {
+ $ret .= '_no/';
+ } else {
+ $ret .= $etg;
+ }
+ $i += 2;
+ break;
+ default:
+ $ret .= $body{$i};
+ }
+ $i++;
+ }
+ return( $ret );
+}
+
+
+/* This function trys to locate the entity_id of a specific mime element */
+
+function find_ent_id( $id, $message ) {
+
+ $ret = '';
+ for ($i=0; $ret == '' && $i < count($message->entities); $i++) {
+
+ if ( $message->entities[$i]->header->entity_id == '' ) {
+ $ret = find_ent_id( $id, $message->entities[$i] );
+ } else {
+ if ( strcasecmp( $message->entities[$i]->header->id, $id ) == 0 )
+ $ret = $message->entities[$i]->header->entity_id;
+ }
+
+ }
- return $string;
- }
+ return( $ret );
+}
?>
projects / squirrelmail.git / blobdiff