X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=functions%2Fmime.php;h=19fa5a83adde004d75fe329cae722b3a0134b4b2;hb=710a8254ee65541ea794849eeebb59c65356e349;hp=05a340ab39466dbe8871edfefd3b66736e67b6f4;hpb=7350889b45590aee831ba1150ee94efb95b03992;p=squirrelmail.git
diff --git a/functions/mime.php b/functions/mime.php
index 05a340ab..19fa5a83 100644
--- a/functions/mime.php
+++ b/functions/mime.php
@@ -1,1151 +1,1634 @@
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, $header) {
-
- sqimap_messages_flag ($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) == '\\"')
- $pos++;
- elseif (substr($structure, $pos, 2) == '\\\\')
- $pos++;
- $pos++;
- }
- } elseif ( $structure{$pos} == '(' ) {
- $pos = mime_match_parenthesis ($pos, $structure);
- }
- }
- echo "Error decoding mime structure. Report this as a bug!
\n";
- 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;
- $sid = sqimap_session_id();
- fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id]\r\n");
- $data = sqimap_read_data ($imap_stream, $sid, 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( $ret{0} == '<' ) {
- fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id.MIME]\r\n");
- $data = sqimap_read_data ($imap_stream, $sid, 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 );
+/**
+ * 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(SM_PATH . 'functions/imap.php');
+require_once(SM_PATH . 'functions/attachment_common.php');
+
+/* --------------------------------------------------------------------------------- */
+/* 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 ($bodystructure, $flags=array()) {
+
+ /* Isolate the body structure and remove beginning and end parenthesis. */
+ $read = trim(substr ($bodystructure, strpos(strtolower($bodystructure), 'bodystructure') + 13));
+ $read = trim(substr ($read, 0, -1));
+ $i = 0;
+ $msg = Message::parseStructure($read,$i);
+ if (!is_object($msg)) {
+ include_once(SM_PATH . 'functions/display_messages.php');
+ global $color, $mailbox;
+ displayPageHeader( $color, urldecode($mailbox) );
+ echo "
' . htmlspecialchars($read) . ' |