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<?php
/*********************************************************************
* Cyberlib - (C) American Metrocomm Internet Services *
* by Timothy Whitfield <timothy@ametro.net> *
* *
* PHP Cybercash API - This requires that CyberCash support be *
* compiled. *
* *
* *
* This is an attempt to duplicate the cybercash API for PHP *
* users. *
*********************************************************************
* This does not require merchant_conf for reasons that any file *
* can be accessed by the web server can be accessed by any cgi. *
*********************************************************************
*/
function SendCC2_1Server($merchant,$merchant_key,
$url,$operation,$CCNVList)
{
/* We need to make the url. */
$url=$url."cr21api.cgi/".$operation;
return SendCCServer($merchant,$merchant_key,$url,$CCNVList);
}
function SendCCServer($merchant,$merchant_key,$url,$CCNVList)
{
/* Break the url into parts. */
$url=parse_url($url);
/* Turn the name value pairs into a url encoded message. */
$pairs="";
$done=0;
$more=list($key,$val)=each($CCNVList);
while(!$done)
{
$pairs.=chop($key)."=".urlencode(chop($val));
$more=list($key,$val)=each($CCNVList);
if($more)
{
$pairs.="&";
}
else
{
$done=1;
}
}
$encrypted_pairs=CCEncrypt($merchant_key,$pairs);
$pairs_length=strlen($encrypted_pairs);
$message=sprintf("POST %s/%s HTTP/1.0\r\n",$url["path"],$merchant);
$message.=sprintf("User-Agent: CCMCK-%s\r\n","3.2.0.5");
$message.="Content-type: application/x-www-form-urlencoded\r\n";
$message.=sprintf("Content-length: %d\r\n",$pairs_length);
$message.="\r\n";
$message.=$encrypted_pairs."\r\n";
$response=CCSocketSend($merchant_key,$url["host"],isset($url["port"])?$url["port"]:"",$message);
return $response;
}
function CCEncrypt($merchant_key,$pairs)
{
$session_key=sprintf("%s #%ld",date("D M j H:i:s Y"),getmypid());
$enc_msg=cybercash_encr($merchant_key,$session_key,$pairs);
$pairs=cybercash_base64_encode($enc_msg["outbuff"]);
$mac=cybercash_base64_encode($enc_msg["macbuff"]);
/* This adds the information needed to decrypt. */
$encrypted_pairs="message=".urlencode($pairs)."&";
$encrypted_pairs.="session-key=".urlencode($session_key)."&";
$encrypted_pairs.="mac=".urlencode($mac);
return $encrypted_pairs;
}
function CCSocketSend($merchant_key,$host,$port,$message)
{
if(!$port)
{
$port="80";
}
/*This opens the port. */
$fd=fsockopen($host,$port);
/* Minor error checking. */
if(!$fd)
{
$vars["MStatus"]="failure-hard";
$vars["MErrMsg"]="Error contacting credit processor.";
return $vars;
}
/*This sends the message. */
fputs($fd,$message);
/* We read the header in and parse at the same time. */
/* Retrieve header. */
$i=0;
$response="";
while(!feof($fd) && $response != "\n")
{
$response="";
$more="";
while(!feof($fd) && $more != "\n")
{
$more=fgetc($fd);
if($more != "\n" || $response=="")
{
if($more != "\r")
{
$response.=$more;
}
}
}
$header[$i++]=$response;
}
/* We will now get the message. */
$message="";
while(!feof($fd))
{
$message.=fgets($fd,50);
}
/* It should be ok to close the socket now. */
fclose($fd);
/* This set of variables is encoded/encrypted. */
$vars=CCGetVars($message);
$vars["message"]=cybercash_base64_decode($vars["message"]);
$vars["mac"]=cybercash_base64_decode($vars["mac"]);
/* Check for errors with the request/decryption. */
/* message is base64 and encrypted. */
$dec_msg=cybercash_decr($merchant_key,$vars["session-key"],
$vars["message"]);
if($dec_msg["errcode"])
{
$vars["MStatus"]="failure-hard";
$vars["MErrMsg"]="Response non-decodable.";
return $vars;
}
if($dec_msg["macbuff"] != $vars["mac"])
{
$vars["MStatus"]="failure-hard";
$vars["MErrMsg"]="Signitures do not match.";
return $vars;
}
/* We will have to parse again to get more info. */
$vars=CCGetVars($dec_msg["outbuff"]);
return $vars;
}
function CCGetVars($message)
{
/* Retrieve variables.
This function retrieves variables in var/value key pairs.
So that $myvar["var"]==value
*/
/* Need to find these variables too. */
$cx=0;
$response="";
$more="";
$message.="\n";
$msg_len=strlen($message);
while($cx<=$msg_len)
{
$more="";
$varname="";
$varval="";
while($cx<=$msg_len && $more != "&" && $more != "\n")
{
$more=substr($message,$cx,1);
$cx++;
if($more != "&" && $more != "=" && $more != "\n")
{
$response=$response.$more;
}
if($more=="=")
{
$varname=$response;
$response="";
}
if($more=="&" || $more=="\n")
{
$varval=$response;
$response="";
}
}
if($varname != "")
{
$cybervar[$varname]=urldecode($varval);
}
}
return $cybervar;
}
?>
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