class mime_decode {

var $content = Array();

function mime_encode_headers($string) {

if($string == "") return;

if(!eregi("^([[:print:]]*)$",$string))

$string = "=?ISO-8859-1?Q?".str_replace("+","_",str_replace("%","=",urlencode($string)))."?=";

return $string;

}

function decode_mime_string($string) {

if(($pos = strpos($string,"=?")) === false) return $string;

while(!($pos === false)) {

$newresult .= substr($string,0,$pos);

$string = substr($string,$pos+2,strlen($string));

$intpos = strpos($string,"?");

$charset = substr($string,0,$intpos);

$enctype = strtolower(substr($string,$intpos+1,1));

$string = substr($string,$intpos+3,strlen($string));

$endpos = strpos($string,"?=");

$mystring = substr($string,0,$endpos);

$string = substr($string,$endpos+2,strlen($string));

if($enctype == "q") {

$mystring = str_replace("_"," ",$mystring);

$mystring = $this->decode_qp($mystring);

} else if ($enctype == "b")

$mystring = base64_decode($mystring);

$newresult .= $mystring;

$pos = strpos($string,"=?");

}

return $newresult.$string;

}

function decode_header($header) {

$headers = explode("\r\n",$header);

$decodedheaders = Array();

for($i=0;$i

$thisheader = $headers[$i];

if(strpos($thisheader,": ") === false) {

$decodedheaders[$lasthead] .= " $thisheader";

} else {

$dbpoint = strpos($thisheader,": ");

$headname = strtolower(substr($thisheader,0,$dbpoint));

$headvalue = trim(substr($thisheader,$dbpoint+1));

if($decodedheaders[$headname] != "") $decodedheaders[$headname] .= "; $headvalue";

else $decodedheaders[$headname] = $headvalue;

$lasthead = $headname;

}

}

return $decodedheaders;

}

function fetch_structure($email) {

$ARemail = Array();

$separador = "\r\n\r\n";

$header = trim(substr($email,0,strpos($email,$separador)));

$bodypos = strlen($header)+strlen($separador);

$body = substr($email,$bodypos,strlen($email)-$bodypos);

$ARemail["header"] = $header; $ARemail["body"] = $body;

return $ARemail;

}

function get_names($strmail) {

$ARfrom = Array();

$strmail = stripslashes(ereg_replace("\t","",ereg_replace("\n","",ereg_replace("\r","",$strmail))));

if(trim($strmail) == "") return $ARfrom;

$armail = Array();

$counter = 0; $inthechar = 0;

$chartosplit = ",;"; $protectchar = "\""; $temp = "";

$lt = "<"; $gt = ">";

$closed = 1;

for($i=0;$i

$thischar = $strmail[$i];

if($thischar == $lt && $closed) $closed = 0;

if($thischar == $gt && !$closed) $closed = 1;

if($thischar == $protectchar) $inthechar = ($inthechar)?0:1;

if(!(strpos($chartosplit,$thischar) === false) && !$inthechar && $closed) {

$armail[] = $temp; $temp = "";

} else

$temp .= $thischar;

}

if(trim($temp) != "")

$armail[] = trim($temp);

for($i=0;$i

$thisPart = trim(eregi_replace("^\"(.*)\"$", "\\1", trim($armail[$i])));

if($thisPart != "") {

if (eregi("(.*)<(.*)>", $thisPart, $regs)) {

$email = trim($regs[2]);

$name = trim($regs[1]);

} else {

if (eregi("([-a-z0-9_$+.]+@[-a-z0-9_.]+[-a-z0-9_]+)((.*))", $thisPart, $regs)) {

$email = $regs[1];

$name = $regs[2];

} else

$email = $thisPart;

}

$email = eregi_replace("^\<(.*)\>$", "\\1", $email);

$name = eregi_replace("^\"(.*)\"$", "\\1", trim($name));

$name = eregi_replace("^\((.*)\)$", "\\1", $name);

if ($name == "") $name = $email;

if ($email == "") $email = $name;

$ARfrom[$i]["name"] = $this->decode_mime_string($name);

$ARfrom[$i]["mail"] = $email;

unset($name);unset($email);

}

}

return $ARfrom;

}

function build_alternative_body($ctype,$body) {

global $mime_show_html;

$boundary = $this->get_boundary($ctype);

$part = $this->split_parts($boundary,$body);

$thispart = ($mime_show_html)?$part[1]:$part[0];

$email = $this->fetch_structure($thispart);

$header = $email["header"];

$body = $email["body"];

$headers = $this->decode_header($header);

$body = $this->compile_body($body,$headers["content-transfer-encoding"]);

return $body;

}

function build_related_body($ctype,$body) {

global $mime_show_html,$sid,$lid,$ix,$folder;

$Rtype = trim(substr($ctype,strpos($ctype,"type=")+5,strlen($ctype)));

if(strpos($Rtype,";") != 0)

$Rtype = substr($Rtype,0,strpos($Rtype,";"));

if(substr($Rtype,0,1) == "\"" && substr($Rtype,-1) == "\"")

$Rtype = substr($Rtype,1,strlen($Rtype)-2);

$boundary = $this->get_boundary($ctype);

$part = $this->split_parts($boundary,$body);

for($i=0;$i

$email = $this->fetch_structure($part[$i]);

$header = $email["header"];

$body = $email["body"];

$headers = $this->decode_header($header);

$ctype = $headers["content-type"];

$cid = $headers["content-id"];

$Actype = split(";",$headers["content-type"]);

$types = split("/",$Actype[0]); $rctype = strtolower($Actype[0]);

if($rctype == "multipart/alternative")

$msgbody = $this->build_alternative_body($ctype,$body);

elseif($rctype == "text/plain" && strpos($headers["content-disposition"],"name") === false) {

$body = $this->compile_body($body,$headers["content-transfer-encoding"]);

$msgbody = $this->build_text_body($body);

} elseif($rctype == "text/html" && strpos($headers["content-disposition"],"name") === false) {

$body = $this->compile_body($body,$headers["content-transfer-encoding"]);

if(!$mime_show_html) $body = $this->build_text_body(strip_tags($body));

$msgbody = $body;

} else {

$thisattach = $this->build_attach($header,$body,$boundary,$i);

if($cid != "") {

if(substr($cid,0,1) == "<" && substr($cid,-1) == ">")

$cid = substr($cid,1,strlen($cid)-2);

$cid = "cid:$cid";

$thisfile = "download.php?sid=$sid&lid=$lid&folder=".urlencode($folder)."&ix=".$ix."&bound=".base64_encode($thisattach["boundary"])."&part=".$thisattach["part"]."&filename=".urlencode($thisattach["name"]);

$msgbody = str_replace($cid,$thisfile,$msgbody);

}

}

}

return $msgbody;

}

function linesize($message="", $length=70) {

$line = explode("\r\n",$message);

unset($message);

for ($i=0 ;$i < count($line); $i++) {

$line_part = explode(" ",trim($line[$i]));

unset($buf);

for ($e = 0; $e

$buf_o = $buf;

if ($e == 0) $buf .= $line_part[$e];

else $buf .= " ".$line_part[$e];

if (strlen($buf) > $length and $buf_o != "") {

$message .= "$buf_o\r\n";

$buf = $line_part[$e];

}

}

$message .= "$buf\r\n";

}

return($message);

}