X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=functions%2Fmime.php;h=3bdfedf234fe7053e834aa3a38db7f0c01992f08;hb=b74ba49800905ed6abe8bfd7a1d262a0272eb667;hp=5c1d39f119a409b01dde8d6592ff0c425958ab1a;hpb=2e434774cf8c58fcf79c636a9991a6f70e5eeb60;p=squirrelmail.git diff --git a/functions/mime.php b/functions/mime.php index 5c1d39f1..3bdfedf2 100644 --- a/functions/mime.php +++ b/functions/mime.php @@ -1,196 +1,680 @@ -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); + } + $structure = ""; } - /** All of these values are getting passed back to us **/ - sqimap_get_entity_header($imapConnection, $entity_header, $ent_type0, $ent_type1, $ent_bound, $encoding, $charset, $filename); } + 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 $msg; + } - /** OK, we have the header information, now lets decide what to do with it **/ - if ($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); + // 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); } - $i++; + 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; } - } else { - /** If this isn't a multipart message **/ - $j = 0; - $entity_body = ""; - while ($j < count($body)) { - $entity_body .= $body[$j]; - $j++; + } + } + + // 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; - $count = count($entities); - $entities[$count] = getEntity($entity_body, $bound, $type0, $type1, $encoding, $charset, $filename); + fputs ($imap_stream, sqimap_session_id() . " FETCH $id BODY[$ent_id]\r\n"); + $data = sqimap_read_data ($imap_stream, sqimap_session_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, $regs)) { + return substr($wholemessage, 0, $regs[1]); + } + else if (ereg('"([^"]*)"', $topline, $regs)) { + return $regs[1]; } - return $entities; + $str = "Body retrieval error. Please report this bug!\n" . + "Response: $response\n" . + "Message: $message\n" . + "FETCH line: $topline" . + "---------------\n$wholemessage"; + foreach ($data as $d) { + $str .= htmlspecialchars($d) . "\n"; + } + return $str; } - /** This gets one entity's properties **/ - function getEntity($body, $bound, $type0, $type1, $encoding, $charset, $filename) { - $msg["TYPE0"] = $type0; - $msg["TYPE1"] = $type1; - $msg["ENCODING"] = $encoding; - $msg["CHARSET"] = $charset; - $msg["FILENAME"] = $filename; + function mime_print_body_lines ($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; + $sid = sqimap_session_id(); + // Don't kill the connection if the browser is over a dialup + // and it would take over 30 seconds to download it. + set_time_limit(0); + + fputs ($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++; + } + } - $msg["BODY"] = $body; + /* -[ END MIME DECODING ]----------------------------------------------------------- */ - return $msg; - } - /** This will check whether or not the message contains a certain type. It - searches through all the entities for a match. + + /** This is the first function called. It decides if this is a multipart + message or if it should be handled as a single entity **/ - function containsType($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 = $i; - return true; - } + function decodeMime ($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; + } + } + } + */ - /** Check on type0 and type1 **/ + // 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 $message; } else { - if ( ($message["ENTITIES"][$i]["TYPE0"] == $type0) && ($message["ENTITIES"][$i]["TYPE1"] == $type1) ) { - $ent_num = $i; - return true; + for ($i = 0; isset($message->entities[$i]); $i++) { + $msg = getEntity ($message->entities[$i], $ent_id); + if ($msg) + return $msg; } } } - return false; } - /** This returns a parsed string called $body. That string can then be displayed - as the actual message in the HTML. It contains everything needed, including - HTML Tags, Attachments at the bottom, etc. - **/ - function formatBody($message, $color, $wrap_at) { + // figures out what entity to display and returns the $message object + // for that entity. + function findDisplayEntity ($message, $textOnly = 1) + { + global $show_html_default; + + if (! $message) + return 0; + + if ($message->header->type0 == 'multipart' && + $message->header->type1 == 'alternative' && + $show_html_default && ! $textOnly) { + $entity = findDisplayEntityHTML($message); + if ($entity != 0) + return $entity; + } - /** 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"]); + // Show text/plain or text/html -- the first one we find. + if ( $message->header->type0 == 'text' && + ( $message->header->type1 == 'plain' || + $message->header->type1 == 'html' ) && + isset($message->header->entity_id) ) + return $message->header->entity_id; + + for ($i=0; isset($message->entities[$i]); $i++) { + $entity = findDisplayEntity($message->entities[$i], $textOnly); + if ($entity != 0) + return $entity; + } - if (containsType($message, "text", "html", $ent_num)) { - $body = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]); - } else if (containsType($message, "text", "plain", $ent_num)) { - $body = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]); + return 0; + } + + // 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 $entity; } - // add other primary displaying message types here - else { - // find any type that's displayable - if (containsType($message, "text", "any_type", $ent_num)) { - $body = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]); - } else if (containsType($message, "message", "any_type", $ent_num)) { - $body = decodeBody($message["ENTITIES"][$ent_num]["BODY"], $message["ENTITIES"][$ent_num]["ENCODING"]); + 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" || ! $show_html_default) { + translateText($body, $wrap_at, $body_message->header->charset); } - } - /** If there are other types that shouldn't be formatted, add them here **/ - if ($message["ENTITIES"][$ent_num]["TYPE1"] != "html") - $body = translateText($body, $wrap_at); + $body .= "
". _("Download this as a file") ."

"; + /** Display the ATTACHMENTS: message if there's more than one part **/ + $body .= ""; + if (isset($message->entities[0])) { + $body .= formatAttachments ($message, $ent_num, $message->header->mailbox, $id); + } + $body .= ""; + } else { + $body = formatAttachments ($message, -1, $message->header->mailbox, $id); + } + return( $body ); + } - $body .= "
". _("Download this as a file") ."

"; + // 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; + + $body .= "\n" . + "
\n" . + _("Attachments") . ':' . + "
\n" . + "\n" . + formatAttachments ($message, $ent_id, $mailbox, $id) . + "
"; + + return( $body ); + } - /** Display the ATTACHMENTS: message if there's more than one part **/ - if (count($message["ENTITIES"]) > 1) { - $body .= "" . + '' . + "" . + '\n"; + } + } else { + for ($i = 0; $i < count($message->entities); $i++) { + $body .= formatAttachments ($message->entities[$i], $ent_id, $mailbox, $id); } - - $urlMailbox = urlencode($message["INFO"]["MAILBOX"]); - $id = $message["INFO"]["ID"]; - $body .= "   " . $display_filename . "  (TYPE: $type0/$type1)
"; } - $body .= "
"; - $body .= "ATTACHMENTS:"; - $body .= "
"; - $num = 0; + if ($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 = $filename; + } - for ($i = 0; $i < count($message["ENTITIES"]); $i++) { - /** If we've displayed this entity, go to the next one **/ - if ($ent_num == $i) - continue; + $urlMailbox = urlencode($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]; + + $body .= '
  ' . + "$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'] . ''; + } - $type0 = strtolower($message["ENTITIES"][$i]["TYPE0"]); - $type1 = strtolower($message["ENTITIES"][$i]["TYPE1"]); + unset($Links); - $num++; - $filename = $message["ENTITIES"][$i]["FILENAME"]; - if (trim($filename) == "") { - $display_filename = "untitled$i"; - } else { - $display_filename = $filename; + $body .= "
"; + return( $body ); } - 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); - if ($encoding == "quoted-printable") { - $body = quoted_printable_decode($body); + global $show_html_default; + if ($encoding == 'quoted-printable') { + $body = quoted_printable_decode($body); + + + /* + Following code has been comented as I see no reason for it. + If there is any please tell me a mingo@rotedic.com + while (ereg("=\n", $body)) $body = ereg_replace ("=\n", "", $body); - } else if ($encoding == "base64") { + */ + } else if ($encoding == 'base64') { $body = base64_decode($body); } @@ -199,84 +683,74 @@ } - // This functions decode strings that is encoded according to + // This functions decode strings that is encoded according to // RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text). function decodeHeader ($string) { - // Recognizing only US-ASCII and ISO-8859. Other charsets should - // probably be recognized as well. - if (eregi('=\?(us-ascii|iso-8859-([0-9])+)\?(q|b)\?([^?]+)\?=', + if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', $string, $res)) { - if (ucfirst($res[3]) == "B") { - $replace = base64_decode($res[4]); + if (ucfirst($res[2]) == "B") { + $replace = base64_decode($res[3]); } else { - $replace = ereg_replace("_", " ", $res[4]); + $replace = ereg_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); } - // All HTML characters are in the 7-bit ASCII range and can - // be replaced before doing anything with the 8-bi - // characters. - $replace = htmlspecialchars($replace); - - if ($res[2] == 1) { - // This if clause is debug code. -- gustavf - // Latin small letter o with stroke - while (ereg("\370", $replace)) - $replace = ereg_replace ("\370", "ø", $replace); - } else if ($res[2] == "15") { - // Euro sign - while (ereg("\244", $replace)) - $replace = ereg_replace ("\244", "€", $replace); - // Latin capital letter S with caron - while (ereg("\246", $replace)) - $replace = ereg_replace ("\244", "Š", $replace); - // Latin small letter s with caron - while (ereg("\250", $replace)) - $replace = ereg_replace ("\250", "š", $replace); - // Latin capital letter Z with caron - while (ereg("\264", $replace)) - $replace = ereg_replace ("\264", "Ž", $replace); - // Latin small letter z with caron - while (ereg("\270", $replace)) - $replace = ereg_replace ("\270", "ž", $replace); - // Latin capital ligature OE - while (ereg("\274", $replace)) - $replace = ereg_replace ("\274", "Œ", $replace); - // Latin small ligature oe - while (ereg("\275", $replace)) - $replace = ereg_replace ("\275", "œ", $replace); - // Latin capital letter Y with diaeresis - while (ereg("\276", $replace)) - $replace = ereg_replace ("\276", "Ÿ", $replace); - } else if ($res[2] != "") { - // This gets rid of all characters over 0x9F for other - // iso-8859 charsets. - $replace = strtr($replace, "\240\241\242\243\244\245\246\247". - "\250\251\252\253\254\255\256\257". - "\260\261\262\263\264\265\266\267". - "\270\271\272\273\274\275\276\277". - "\300\301\302\303\304\305\306\307". - "\310\311\312\313\314\315\316\317". - "\320\321\322\323\324\325\326\327". - "\330\331\332\333\334\335\336\337". - "\340\341\342\343\344\345\346\347". - "\350\351\352\353\354\355\356\357". - "\360\361\362\363\364\365\366\367". - "\370\371\372\373\374\375\376\377", - "????????????????????????????????????????". - "????????????????????????????????????????". - "????????????????????????????????????????". - "????????"); - } + $replace = charset_decode ($res[1], $replace); - $string = eregi_replace - ('=\?(us-ascii|iso-8859-([0-9])+)\?(q|b)\?([^?]+)\?=', + // 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 + } 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 = FALSE; // Must be encoded ? + $ret = ''; + for( $i=0; $i < $j; ++$i) { + switch( $string{$i} ) { + case '=': + $ret .= '=3D'; + break; + case '?': + $l = TRUE; + $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 ); + } + ?>