X-Git-Url: https://vcs.fsf.org/?p=squirrelmail.git;a=blobdiff_plain;f=functions%2Fmime.php;h=a3556f0db8e115065f665bc990662d47c9eeab35;hp=3403e0726866ee9f04b1d8300c86b832caf12acd;hb=3d1c7564d321f70744f66a2bd818ad97c59d00ea;hpb=d3cdb279bd61b172926b51d41d09c8a691d6c347 diff --git a/functions/mime.php b/functions/mime.php index 3403e072..9e0d32d6 100644 --- a/functions/mime.php +++ b/functions/mime.php @@ -1,208 +1,1269 @@ -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, 9216); + $bodystructure = ''; + while ( substr($read, 0, $lsid) <> $ssid && + !feof( $imap_stream ) ) { + $bodystructure .= $read; + $read = fgets ($imap_stream, 9216); + } + $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 $props; + } + } +} - /** OK, we have the header information, now lets decide what to do with it **/ - if ($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 { - $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); +/* + * 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++; } - $i++; - } - } else { - /** If this isn't a multipart message **/ - $j = 0; - $entity_body = ""; - while ($j < count($body)) { - $entity_body .= $body[$j]; - $j++; - } - - $count = count($entities); - $entities[$count] = getEntity($entity_body, $bound, $type0, $type1, $encoding, $charset, $filename); - } + } elseif ( $structure{$pos} == '(' ) { + $pos = mime_match_parenthesis ($pos, $structure); + } + } + echo _("Error decoding mime structure. Report this as a bug!") . '
'; + return( $pos ); +} - return $entities; - } +function mime_fetch_body($imap_stream, $id, $ent_id ) { - /** This gets one entity's properties **/ - function getEntity($body, $bound, $type0, $type1, $encoding, $charset, $filename) { - $msg["TYPE0"] = $type0; - $msg["TYPE1"] = $type1; - $msg["ENCODING"] = $encoding; - $msg["CHARSET"] = $charset; - $msg["FILENAME"] = $filename; + /* + * do a bit of error correction. If we couldn't find the entity id, just guess + * that it is the first one. That is usually the case anyway. + */ + if (!$ent_id) { + $ent_id = 1; + } - $msg["BODY"] = $body; + $cmd = "FETCH $id BODY[$ent_id]"; + $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message); - return $msg; - } + do { + $topline = array_shift( $data ); + } while( $topline && $topline == '*' && !preg_match( '/\\* [0-9] FETCH.*/i', $topline )) ; + $wholemessage = implode('', $data); + if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) { - /** This will check whether or not the message contains a certain type. It - searches through all the entities for a match. - **/ - function containsType($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; - } + $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 within HTML documents is illegal (see w3 spec) +* $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 = "" . $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); - /** 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) { - - /** 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. - **/ - $id = $message["INFO"]["ID"]; - $urlmailbox = urlencode($message["INFO"]["MAILBOX"]); - $body = ""; - - if (containsType($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)) { - $tmpbody = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]); - $body .= "" . nl2br(trim($tmpbody)) . ""; - } - // add other primary displaying message types here - else { - // find any type that's displayable - if (containsType($message, "text", "any_type", $ent_num)) { - $tmpbody = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]); - $body .= "" . nl2br(trim($tmpbody)) . ""; - } else if (containsType($message, "message", "any_type", $ent_num)) { - $tmpbody = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]); - $body .= "" . nl2br(trim($tmpbody)) . ""; - } + echo '
' . + '' . + '' . + '" . + '" . + '" . + '" . + "
' . + _("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!") . + "
" . + _("Submit message") . '
 ' . + '
' . _("Command:") . "$cmd
' . _("Response:") . "$response
' . _("Message:") . "$message
' . _("FETCH line:") . "$topline

"; + + $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message); + array_shift($data); + $wholemessage = implode('', $data); + + $ret = $wholemessage; + } + return( $ret ); +} + +function mime_print_body_lines ($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); + $cnt++; + } +} + +/* -[ END MIME DECODING ]----------------------------------------------------------- */ + + + +/* This is the first function called. It decides if this is a multipart + message or if it should be handled as a single entity + */ +function decodeMime ($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 "" . $message->header->entity_id . ' : ' . $message->header->type0 . '/' . $message->header->type1 . '
'; + for ($i = 0; $message->entities[$i]; $i++) { + $msg = listEntities($message->entities[$i], $ent_id); + if ($msg) + return $msg; + } +} +} +*/ - /** If there are other types that shouldn't be formatted, add them here **/ - if ($message["ENTITIES"][$ent_num]["TYPE1"] != "html") - $body = translateText($body); +/* 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; isset($message->entities[$i]); $i++) { + $msg = getEntity ($message->entities[$i], $ent_id); + if ($msg) { + return $msg; + } + } + } + } +} - $body .= "
Download this as a file

"; +/* + * 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( $entity ); +} - /** Display the ATTACHMENTS: message if there's more than one part **/ - if (count($message["ENTITIES"]) > 1) { - $body .= "
"; - $body .= "ATTACHMENTS:"; - $body .= "
"; - $num = 0; +/* Shows the HTML version */ +function findDisplayEntityHTML ($message) { - for ($i = 0; $i < count($message["ENTITIES"]); $i++) { - /** If we've displayed this entity, go to the next one **/ - if ($ent_num == $i) - continue; + 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; +} - $type0 = strtolower($message["ENTITIES"][$i]["TYPE0"]); - $type1 = strtolower($message["ENTITIES"][$i]["TYPE1"]); +/* 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, $has_unsafe_images, $view_unsafe_images, $sort; - $num++; - $filename = $message["ENTITIES"][$i]["FILENAME"]; - if (trim($filename) == "") { - $display_filename = "untitled$i"; + $has_unsafe_images = 0; + + $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 { - $display_filename = $filename; + $body = MagicHTML( $body, $id ); } + } else { + translateText($body, $wrap_at, $body_message->header->charset); + } - $urlMailbox = urlencode($message["INFO"]["MAILBOX"]); - $id = $message["INFO"]["ID"]; - $body .= "   " . $display_filename . "  (TYPE: $type0/$type1)
"; - } - $body .= "
"; - } - return $body; - } + $body .= "
". _("Download this as a file") ."

"; + if ($has_unsafe_images) { + if ($view_unsafe_images) { + $body .= "
". _("Hide Unsafe Images") ."

\n"; + } else { + $body .= "
". _("View Unsafe Images") ."

\n"; + } + } + /** Display the ATTACHMENTS: message if there's more than one part **/ + if (isset($message->entities[0])) { + $body .= formatAttachments ($message, $ent_num, $message->header->mailbox, $id); + } + } else { + $body = formatAttachments ($message, -1, $message->header->mailbox, $id); + } + return ($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; + global $startMessage, $color; + static $ShownHTML = 0; - /** this function decodes the body depending on the encoding type. **/ - function decodeBody($body, $encoding) { - $encoding = strtolower($encoding); + $body = ''; + if ($ShownHTML == 0) { - if ($encoding == "us-ascii") { - $newbody = $body; // if only they all were this easy + $ShownHTML = 1; + $body .= "\n" . + "
\n" . + _("Attachments") . ':' . + "
\n" . + "\n" . + formatAttachments($message, $ent_id, $mailbox, $id) . + "
"; - } else if ($encoding == "quoted-printable") { - echo "$body"; - $body = ereg_replace("=3D", "=", $body); - $body = ereg_replace("=\n", "", $body); - $body = ereg_replace("=20", "\n", $body); - $newbody= $body; + } else if ($message) { - } else if ($encoding == "base64") { - $newbody = base64_decode($body); + if (!$message->entities) { - } else { - $newbody = $body; - } - return $newbody; - } -?> \ No newline at end of file + $type0 = strtolower($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 = ''; + + /* this executes the attachment hook with a specific MIME-type. + * if that doens't have results, it tries if there's a rule + * for a more generic type. */ + $HookResults = do_hook("attachment $type0/$type1", $Links, + $startMessage, $id, $urlMailbox, $ent, $DefaultLink, + $display_filename, $where, $what); + if(count($HookResults[1]) <= 1) { + $HookResults = do_hook("attachment $type0/*", $Links, + $startMessage, $id, $urlMailbox, $ent, $DefaultLink, + $display_filename, $where, $what); + } + + $Links = $HookResults[1]; + $DefaultLink = $HookResults[6]; + + $body .= '  ' . + "$display_filename " . + '' . show_readable_size($message->header->size) . + '  ' . + "[ $type0/$type1 ] " . + ''; + if ($message->header->description) { + $body .= '' . htmlspecialchars(_($message->header->description)) . ''; + } + $body .= ' '; + + + $SkipSpaces = 1; + foreach ($Links as $Val) { + if ($SkipSpaces) { + $SkipSpaces = 0; + } else { + $body .= '  |  '; + } + $body .= '' . $Val['text'] . ''; + } + + unset($Links); + + $body .= "\n"; + } + } else { + for ($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 ( is_array( $string ) ) { + $string = implode("\n", $string ); +} + +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 + $string = decodeHeader($string); +} + +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" ) { + $pos ++; + } + while (strlen($tag) < 4 && $body{$pos} != ' ' && + $body{$pos} != "\t" && $body{$pos} != "\n" && + $pos < $j ) { + $tag .= $body{$pos}; + $pos ++; + } + 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 .= ""; + break; + // Substitute Title + case 'TITL': + $i += 5; + while ( $body{$i} <> '>' && // + $i < $j ) + $i++; + $i++; + $title = ''; + while ( $body{$i} <> '<' && // + $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} <> '>' && // + $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 .= "