<?php
/******************************************************************************
  Authorize.net PHP class
  Written by: Tom Walsh
  Contact: tom at expresshosting dot net
  Description: Authorize.net class used to send information to authorize.net
               for credit card transactions. Written in PHP, and hopefully
               smart enough to determine if the host has cURL enabled either
               on the server or in PHP, and that cURL supports SSL connection.

  Usage:       With login and password:
                 $cc = new AuthorizeNet( $authorize_username, $authorize_password );
               With login and transaction key:
               $cc = new AuthorizeNet( $authorize_username, '', $authorize_transkey );

               $cc->custData(  $firstname, $lastname, $company, $address, $city,
                               $state, $zip, $country, $phone, $fax, $custid,
                               $custtaxid, $invoicenum, $description);
               $result = $cc->processCC( $amount, $ccnumber, $ccexp,
                                         $cctranstype, $cccvv2);

               $cctranstype is generally "AUTH_CAPTURE", or "AUTH", or "CAPTURE"
               $cccvv2 is the credit card hash code on the back of the card 
               (typically 3 digits for MC and Visa, 4 for AMEX)

               if( $result == true ) {
                    //approved
               } else {
                    // declined
               }

  Todo: Correct the error reporting from authorize.net. The system currently
        handles approvals and declines, but not errors. Need to improve that.

  License: BSD
  Licsene Copy:
                Copyright (c) 2007, ExpressPHP.com
                All rights reserved.

                Redistribution and use in source and binary forms, with or 
                without modification, are permitted provided that the following
                conditions are met:

                    * Redistributions of source code must retain the above 
                      copyright notice, this list of conditions and the
                      following disclaimer.
                    * Redistributions in binary form must reproduce the above 
                      copyright notice, this list of conditions and the 
                      following disclaimer in the documentation and/or other 
                      materials provided with the distribution.
                    * Neither the name of ExpressPHP.com nor the names of 
                      its contributors may be used to endorse or promote 
                      products derived from this software without specific 
                      prior written permission.

              THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
              CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
              INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
              MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
              DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
              BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
              EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
              TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
              DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
              ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
              OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
              OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
              POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************/

class AuthorizeNet
{

    // set class variables to null
    // Merchant Account Information
    var $login_id       =    NULL;
    var $tran_key        =     NULL;
    var $password       =    NULL;
    var $version        =    NULL;
    // Customer Data
    var $first_name     =    NULL;
    var $last_name      =    NULL;
    var $company        =    NULL;
    var $address        =    NULL;
    var $city           =    NULL;
    var $state          =    NULL;
    var $zip            =    NULL;
    var $country        =    NULL;
    var $phone          =    NULL;
    var $fax            =    NULL;
    // Additional Customer Data
    var $cust_id        =    NULL;
    var $customer_ip    =    NULL;
    var $customer_tax_id=    NULL;
    // Email Settings
    var $email          =    NULL;
    var $email_customer =    false;
    var $merchant_email =    NULL;
    // Invoice Information
    var $invoice_num    =    NULL;
    var $description    =    NULL;
    // Customer Shipping Address
    var $ship_to_first_name     =    NULL;
    var $ship_to_last_name      =    NULL;
    var $ship_to_company        =    NULL;
    var $ship_to_address        =    NULL;
    var $ship_to_city           =    NULL;
    var $ship_to_state          =    NULL;
    var $ship_to_zip            =    NULL;
    var $ship_to_country        =    NULL;
    // Transaction Data
    var $amount                 =    NULL;
    var $currency_code          =    NULL;
    var $method                 =    NULL;
    var $type                   =    NULL;
    var $recurring_billing      =    NULL;
    // Billing Info
    var $bank_aba_code          =    NULL;
    var $bank_acct_num          =    NULL;
    var $bank_acct_type         =    NULL;
    var $bank_name              =    NULL;
    var $bank_acct_name         =    NULL;
    var $echeck_type            =    NULL;
    var $card_num               =    NULL;
    var $exp_date               =    NULL;
    var $card_code              =    NULL;
    var $trans_id               =    NULL;
    var $auth_code              =    NULL;
    // Authorize.net specific information
    var $location               =    NULL;
    var $error                  =    NULL;
    var $curltype               =    NULL;
    var $curllocation           =    NULL;
    var $nocurlssl              =    false;
    var $setcustinfo            =    false;
    var $returndata             =    NULL;
    // Error reporting variables
    var $isError                =      false;
    var $error_message            =     NULL;
    
    // initialize the constructor
    function authorizenet( $login = NULL, $password = NULL, $tran_key = NULL, $version = "3.1" )
    {
        $this->customer_ip = $_SERVER['REMOTE_ADDR'];
        $this->location = "https://secure.authorize.net/gateway/transact.dll";

        if( $login != NULL ) {
            $this->setLoginId( $login );
        } else {
            $this->raiseError( 'You must provide a login to proceed.';
        }

        if( $password == NULL && $tran_key != NULL ) {
            // We have been passed a tran_key
            $this->setTransKey( $tran_key );
        } elseif( $password != NULL && $tran_key == NULL ) {
            // We have been passed a password
            $this->setPassword( $password );
        } else {
            // We have an error
            $this->raiseError( 'You must provide a password or a transaction key to proceed.' );
        }

        $this->setVersion( $version );

        $whichcurl = trim( exec( '/usr/bin/which curl' ) );
        //check for curl in PHP
        if ( function_exists( 'curl_init' ) ) {
            $this->curltype = "PHP";
            $versiondata = curl_version();
            if( is_string( $versiondata ) ) {
                //process the curl string to find the SSL
                $this->nocurlssl = (stristr( $versiondata, 'openssl' ) === false ) ? true : false;
            } elseif ( is_array( $versiondata ) ) {
                // process the curl array (PHP5 returns an array)
                $this->nocurlssl = ( stristr( $versiondata, 'openssl' ) === false ) ? true : false;
            } elseif ( !empty( $whichcurl ) ) {
                $this->curltype = "CURL";
                $this->curllocation = $whichcurl;
                exec( $this->curllocation ." -V", $versiondata );
                foreach( $versiondata as $line) {
                    if( stristr( $line, 'openssl' ) !== false ) {
                        $this->nocurlssl = false;
                        break;
                    } else {
                        $this->nocurlssl = true;
                    }
                }
            }
        } else {
            $this->raiseError( 'Unable to locate cURL. Please check that PHP is compiled with cURL or that you have the curl binary installed on your server.' );
        }

        if ( $this->nocurlssl ) {
            $this->raiseError( 'cURL is installed, however it does not have SSL enabled. Please recomlpie cURL to include SSL support.' );
        }
     
    }

    function custData(  $firstname = NULL,
                        $lastname = NULL,
                        $company = NULL,
                        $address = NULL,
                        $city = NULL,
                        $state = NULL,
                        $zip = NULL,
                        $country = NULL,
                        $phone = NULL,
                        $fax = NULL,
                        $custid = NULL,
                        $custtaxid = NULL,
                        $invoicenum = NULL,
                        $description = NULL )
    {
        $this->setFirstName( $firstname );
        $this->setLastName( $lastname );
        $this->setCompany( $company );
        $this->setAddress( $address );
        $this->setCity( $city );
        $this->setState( $state );
        $this->setZip( $zip );
        $this->setCountry( $country );
        $this->setPhone( $phone );
        $this->setFax( $fax );
        $this->setCustID( $custid );
        $this->setCustomerTaxID( $custtaxid );
        $this->setInvoiceNum( $invoicenum );
        $this->setDescription( $description );
        $this->setcustinfo = true;
    }
     
    function processCC( $amount = NULL,
                        $ccnumber = NULL,
                        $ccexp = NULL,
                        $cctranstype = NULL,
                        $cccvv2 = NULL )
    {
        $data = null;
        $this->setMethod( "CC" );
        $this->setAmount( $amount );
        $this->setCardNum( $ccnumber );
        $this->setExpDate( $ccexp );
        $this->settheType( $cctranstype );
        $this->setCardCode( $cccvv2 );

        $data =& $this->getUrlData();

        // Only process the information if there are no errors.
        if( $this->hasError != true ) {
            if ( $this->curltype == "PHP" ) {
                $returnstring = $this->usePHPCurl( $data );
            } elseif ( $this->curltype == "CURL" ) {
                $returnstring = $this->useCurl( $data );
            }
        }
         
        $returnarray = array();
        $returnarray = explode( '|', $returnstring );
        $responsecode = $returnarray[2];
        if( $responsecode == 1 ) {
                $this->returndata = array( "text" => $returnarray[3],
                                           "approval_code" => $returnarray[6],
                                           "avs_code" => $returnarray[7],
                                           "trans_id" => $returnarray[8],
                                           "amount" => $returnarray[9],
                                           "type" => $returnarray[10] );
                return true;
        } elseif ( $responsecode == 2 ) {
                $this->returndata = array( "text" => $returnarray[3],
                                           "approval_code" => $returnarray[6],
                                           "avs_code" => $returnarray[7],
                                           "trans_id" => $returnarray[8],
                                           "amount" => $returnarray[9],
                                           "type" => $returnarray[10] );
                return false;
        } else {
                $this->returndata = $returnstring;
                return false;
        }
    }

    function processECheck( $amount = NULL,
                            $bank_aba_code = NULL,
                            $bank_acct_num = NULL,
                            $bank_acct_type = NULL,
                            $bank_name = NULL,
                            $bank_acct_name = NULL,
                            $type = NULL,
                            $echeck_type = NULL )
    {
        $this->setMethod( "ECHECK" );
        $this->setBankABACode( $bank_aba_code );
        $this->setBankAcctNum( $bank_acct_num );
        $this->setBankName( $bank_name );
        $this->setBankAcctName( $bank_acct_name );
        $this->setEcheckType( $echeck_type );

        $data =& $this->getUrlData();

        if ( $this->curltype == "PHP" ) {
            $returnstring = $this->usePHPCurl( $data );
        } elseif ( $this->curltype == "CURL" ) {
            $returnstring = $this->useCurl( $data );
        }

        echo $returnstring;

        $returnarray = array();
        $returnarray = explode( '|', $returnstring );
        $responsecode = $returnarray[2];
        if( $responsecode == 1 ) {
                return true;
        } else {
            if( $returnarray[3] ) {
                $this->error = $returnarray[3];
            } else {
                $this->error = $returnstring;
            }

            return false;
        }
    }

    function usePHPCurl( &$data )
    {

        $returnstring = "";
        $curl = curl_init();
        curl_setopt( $curl, CURLOPT_URL, $this->location );
        curl_setopt( $curl, CURLOPT_RETURNTRANSFER, 1 );
        curl_setopt( $curl, CURLOPT_POST, 1 );
        curl_setopt( $curl, CURLOPT_TIMEOUT, 30 );
        curl_setopt( $curl, CURLOPT_HEADER, 0 );
        curl_setopt( $curl, CURLOPT_POSTFIELDS, $data );
        $returnstring = curl_exec( $curl );
        @curl_close( $curl );

        return $returnstring;

    }

    function useCurl( &$data )
    {

        $returnstring = "";
        exec( "$this->curllocation -d \"$data\" $this->location", $returnarray );
        if ( sizeof( $returnarray > 0 ) ) {
            foreach( $returnarray as $item ) {
                $returnstring .= $item;
            }
        } else {
            $returnstring = false;
        }

        return $returnstring;

    }
     
    function error() //return the error code from processing
    {
        return $this->error;
    }

    function raiseError( $text = NULL ) {
        // an error has occured
        $this->isError = true;
        $this->error_message = $text;
    }

    function hasError() {
        // Do we have an error?
        if( $this->isError == true ) {
            // Yes we have an error
            return true;
        } else {
            return false;
        }
    }

    function getError() {
        // Return the last error
        return $this->error_message;
    }
     
    function getUrlData()
    {
        if( $this->password == NULL ) {
            // The password is null so we must be using a tran_key
            $passtype    =    'x_tran_key';
            $password    =    $this->tran_key;
        } else {
            // The password wasn't null so we are using a password
            $passtype    =    'x_password';
            $password    =    $this->password;
        }
        
        $data =
        "x_login="                    . $this->login_id .  
        "&" . $passtype . '='         . $password .
        "&x_version="                 . $this->version .
        "&x_delim_data="              . "TRUE" .  
        "&x_delim_char="              . "|" .
        "&x_relay_response="          . "FALSE" .
        "&x_customer_ip="             . $this->customer_ip;

        if( $this->setcustinfo ) {
             $data .=
             "&x_first_name="         . $this->first_name .
             "&x_last_name="          . $this->last_name .
             "&x_company="            . $this->company .
             "&x_address="            . $this->address .
             "&x_city="               . $this->city .
             "&x_state="              . $this->state .
             "&x_zip="                . $this->zip .
             "&x_country="            . $this->country .
             "&x_phone="              . $this->phone .
             "&x_fax="                . $this->fax .
             "&x_cust_id="            . $this->cust_id .
             "&x_customer_tax_id="    . $this->customer_tax_id .
             "&x_invoice_num="        . $this->invoice_num .
             "&x_description="        . $this->description;
        }

        if( $this->method == "CC" ) {
            $data .=
            "&x_method="              . $this->method .
            "&x_amount="              . $this->amount .
            "&x_card_num="            . $this->card_num .
            "&x_exp_date="            . $this->exp_date .
            "&x_type="                . $this->type;
            if( $this->card_code != "" ) {
                $data .=
                "&x_card_code="       . $this->card_code;
            }
        }
         
        if( $this->method == "ECHECK" ) {
            $data .=
            "&x_method="              . $this->method .
            "&x_amount="              . $this->amount .
            "&x_bank_aba_code="       . $this->bank_aba_code .
            "&x_bank_acct_num="       . $this->bank_acct_num .
            "&x_bank_acct_type="      . $this->bank_acct_type .
            "&x_bank_name="           . $this->bank_name .
            "&x_bank_acct_name="      . $this->bank_acct_name .
            "&x_type="                . $this->type .
            "&x_echeck_type="         . $this->echeck_type;
        }

        return $data;
    }

    function setLoginId( $loginid ) {
        if( strlen( $loginid ) > 20 ) {
            $this->raiseError( 'Login ID is longer than 20.' );
        } else {
            $this->login_id = urlencode( $loginid );
        }
    }

    function setTranKey( $tran_key ) {
        if( strlen( $tran_key ) > 16 ) {
            $this->raiseError( 'Tran Key is longer tha 16.' );
        } else {
            $this->tran_key = urlencode( $tran_key );
        }
    }

    function setPassword( $password )
    {
    $this->password = urlencode( $password );
    }

    function setVersion( $version )
    {
    $this->version = urlencode( $version );
    }

    function setFirstName( $first_name )
    {
    $this->first_name = urlencode( $first_name );
    }

    function setLastName( $last_name )
    {
    $this->last_name = urlencode( $last_name );
    }

    function setCompany( $company )
    {
    $this->company = urlencode( $company );
    }

    function setAddress ( $address )
    {
    $this->address = urlencode( $address );
    }

    function setCity( $city )
    {
    $this->city = urlencode( $city );
    }

    function setState( $state )
    {
    $this->state = urlencode( $state );
    }

    function setZip( $zip )
    {
    $this->zip = urlencode( $zip );
    }

    function setCountry( $country )
    {
    $this->country = urlencode( $country );
    }

    function setPhone( $phone )
    {
    $this->phone = urlencode( $phone );
    }

    function setFax( $fax )
    {
    $this->fax = urlencode( $fax );
    }

    function setCustID( $custid )
    {
    $this->cust_id = urlencode( $custid );
    }

    function setCustomerTaxID( $customer_tax_id )
    {
    $this->customer_tax_id = urlencode( $customer_tax_id );
    }

    function setEmail( $email )
    {
    $this->email = urlencode( $email );
    }

    function setMerchantEmail( $merchantemail )
    {
    $this->merchant_email = urlencode( $merchantemail );
    }

    function setInvoiceNum( $invoicenumber )
    {
    $this->invoice_num = urlencode( $invoicenumber );
    }

    function setDescription( $description )
    {
    $this->description = urlencode( $description );
    }

    function setAmount( $amount )
    {
    $this->amount =  urlencode( $amount );
    }

    function setCurrenyCode( $currencycode )
    {
    $this->currency_code = urlencode( $currencycode );
    }

    function setMethod( $method )
    {
    $this->method = urlencode( $method );
    }

    function settheType( $type )
    {
    $this->type = urlencode( $type );
    }

    function setBankABACode( $bankabacode )
    {
    $this->bank_aba_code = urlencode( $bankabacode );
    }

    function setBankAcctNum( $bankacctnum )
    {
    $this->bank_acct_num = urlencode( $bankacctnum );
    }

    function setBankAcctType( $bankaccttype )
    {
    $this->bank_acct_type = urlencode( $bankaccttype );
    }

    function setBankName( $bankname )
    {
    $this->bank_name = urlencode( $bankname );
    }

    function setBankAcctName( $bankacctname )
    {
    $this->bank_acct_name = urlencode( $bankacctname );
    }

    function setEcheckType( $echecktype )
    {
    $this->echeck_type = urlencode( $echecktype );
    }

    function setCardNum( $ccnum )
    {
    $this->card_num = urlencode( $ccnum );
    }

    function setExpDate( $expdate )
    {
    $this->exp_date = urlencode( $expdate );
    }

    function setCardCode( $cardcode )
    {
    $this->card_code = urlencode( $cardcode );
    }

    function setTransID( $transid )
    {
    $this->trans_id = urlencode( $transid );
    }

    function setAuthCode( $authcode )
    {
    $this->auth_code = urlencode( $authcode );
    }
     
}
?>