documentation/zencart/ipncheck_8php_source.html

00001 <?php
00020 if (!function_exists('curl_setopt_array')) {
00021    function curl_setopt_array(&$ch, $curl_options)
00022    {
00023        foreach ($curl_options as $option => $value) {
00024            if (!curl_setopt($ch, $option, $value)) {
00025                return false;
00026            }
00027        }
00028        return true;
00029    }
00030 }
00031
00032 $verboseMode = (isset($_GET['verbose']) ? TRUE : FALSE);
00033 $headerMode = (isset($_GET['headers']) ? TRUE : FALSE);
00034 $testBoth = (isset($_GET['both']) && $_GET['both'] == '0') ? FALSE : TRUE;
00035 $checkNoChex = (isset($_GET['nochex'])) ? TRUE : FALSE;
00036 $testSandbox = (isset($_GET['sandbox'])) ? TRUE : FALSE;
00037
00038 $_POST = array();
00039 if (isset($GLOBALS)) unset($GLOBALS);
00040 if (isset($_GET)) unset($_GET);
00041 if (isset($_REQUEST)) unset($_REQUEST);
00042 $_POST['ipn_mode'] = 'communication_test';
00043 if ($testSandbox) $_POST['test_ipn'] = 1;
00044 define('ENABLE_SSL','true');
00045 define('MODULE_PAYMENT_PAYPAL_HANDLER', 'www.paypal.com/cgi-bin/webscr');
00046
00047
00048 echo 'IPNCHECK.PHP - Version 1.3.9';
00049 echo '<br /><br /><pre>';
00050     $defaultMethod = $altMethod = '';
00051     $info = '';
00052     $postdata = '';
00053     $postback = '';
00054     $postback_array = array();
00055
00056     //build post string
00057     foreach($_POST as $key=>$value) {
00058       $postdata .= $key . "=" . urlencode(stripslashes($value)) . "&";
00059       $postback .= $key . "=" . urlencode(stripslashes($value)) . "&";
00060       $postback_array[$key] = $value;
00061     }
00062     $postback .= "cmd=_notify-validate";
00063     $postback_array['cmd'] = "_notify-validate";
00064     if ($postdata == '=&') {
00065       die('IPN NOTICE :: No POST data to process -- Bad IPN data<br /><pre>' . print_r($_POST, true));
00066     }
00067     $postdata_array = $_POST;
00068     ksort($postdata_array);
00069
00070     if (sizeof($postdata_array) == 0) die('Nothing to process. Please return to home page.');
00071
00072     // send received data back to PayPal for validation
00073       $scheme = 'https://';
00074       //Parse url
00075       $web = parse_url($scheme . MODULE_PAYMENT_PAYPAL_HANDLER);
00076       if ($checkNoChex == TRUE) $web = parse_url('https://www.nochex.com/nochex.dll/apc/apc');
00077       if (isset($_POST['test_ipn']) && $_POST['test_ipn'] == 1) {
00078         $web = parse_url($scheme . 'www.sandbox.paypal.com/cgi-bin/webscr');
00079       }
00080       //Set the port number
00081       if($web['scheme'] == "https") {
00082         $web['port']="443";  $web['protocol'] = "ssl://";
00083       } else {
00084         $web['port']="80";   $web['protocol'] = "";
00085       }
00086
00087
00088       $result = '';
00089       $data = '';
00090       if (function_exists('curl_init')) {
00091         $result = doPayPalIPNCurlPostback($web, $postback, $verboseMode, $headerMode);
00092         if (in_array($result, array('VERIFIED', 'SUCCESS', 'INVALID'))) {
00093           echo nl2br('IPN TESTING - Response Received via CURL -- <strong>COMMUNICATIONS OKAY</strong>' . "\n<!--" . $data . '-->');
00094           $defaultMethod = 'CURL';
00095           $altMethod = 'FSOCKOPEN';
00096         }
00097       } else {
00098         echo nl2br('CURL not available. Will attempt to connect using fsockopen() instead.' . "\n");
00099       }
00100
00101       if (!in_array($result, array('VERIFIED', 'SUCCESS', 'INVALID')) || $testBoth === TRUE) {
00102         $result = doPayPalIPNFsockopenPostback($web, $postback);
00103         echo nl2br('IPN TESTING - Confirmation/Validation response with fsockopen(): <strong>' .$result . "</strong>\n<!--" . $info . '-->');
00104         if ($defaultMethod == '' && $result != 'FAILED') {
00105           $defaultMethod = 'FSOCKOPEN';
00106           $altMethod = 'CURL';
00107         }
00108       }
00109 if ($defaultMethod != '') {
00110   echo '<br><br>Default method likely to be used for communications is: <strong>' . $defaultMethod . '</strong>, with the fallback method being <strong>' . $altMethod . '</strong> if possible.';
00111 }
00112 echo '<br><br>Script finished.';
00113
00114
00115 /************************************/
00116
00117   function doPayPalIPNFsockopenPostback($web, $postback) {
00118     global $info;
00119     $header  = "POST " . $web['path'] . " HTTP/1.1\r\n";
00120     $header .= "Host: " . $web['host'] . "\r\n";
00121     $header .= "Content-type: application/x-www-form-urlencoded\r\n";
00122     $header .= "Content-length: " . strlen($postback) . "\r\n";
00123     $header .= "Connection: close\r\n\r\n";
00124     $errnum = 0;
00125     $errstr = '';
00126     $ssl = $web['protocol'];
00127     //Create paypal connection
00128     $fp=fsockopen($ssl . $web['host'], $web['port'], $errnum, $errstr, 30);
00129
00130     if(!$fp && $ssl == 'ssl://') {
00131       echo nl2br("\n" . 'IPN ERROR :: Could not establish fsockopen: ' . "\n" . 'Host Details = ' . $ssl . $web['host'] . ':' . $web['port'] . ' (' . $errnum . ') ' . $errstr . "\n Trying again with HTTPS over 443 ...");
00132       $ssl = 'https://';
00133       $web['port'] = '443';
00134       $fp=fsockopen($ssl . $web['host'], $web['port'], $errnum, $errstr, 30);
00135     }
00136     if(!$fp && $ssl == 'https://') {
00137       echo nl2br("\n" . 'IPN ERROR :: Could not establish fsockopen: ' . "\n" . 'Host Details = ' . $ssl . $web['host'] . ':' . $web['port'] . ' (' . $errnum . ') ' . $errstr . "\n Trying again directly over 443 ...");
00138       $ssl = '';
00139       $web['port'] = '443';
00140       $fp=fsockopen($ssl . $web['host'], $web['port'], $errnum, $errstr, 30);
00141     }
00142     if(!$fp) {
00143       echo nl2br("\n" . 'IPN ERROR :: Could not establish fsockopen: ' . "\n" . 'Host Details = ' . $ssl . $web['host'] . ':' . $web['port'] . ' (' . $errnum . ') ' . $errstr . "\n Trying again with HTTP over port 80 ...");
00144       $ssl = 'http';
00145       $web['port'] = '80';
00146       $fp=fsockopen($ssl . $web['host'], $web['port'], $errnum, $errstr, 30);
00147     }
00148     if(!$fp) {
00149       echo nl2br("\n" . 'IPN ERROR :: Could not establish fsockopen: ' . "\n" . 'Host Details = ' . $ssl . $web['host'] . ':' . $web['port'] . ' (' . $errnum . ') ' . $errstr . "\n Trying again without any specified protocol, using port 80 ...");
00150       $ssl = '';
00151       $web['port'] = '80';
00152       $fp=fsockopen($ssl . $web['host'], $web['port'], $errnum, $errstr, 30);
00153     }
00154     if(!$fp) {
00155       echo nl2br("\n" . 'IPN FATAL ERROR :: Could not establish fsockopen. ' . "\n" . 'Host Details = ' . $ssl . $web['host'] . ':' . $web['port'] . ' (' . $errnum . ') ' . $errstr . "\n");
00156       die();
00157     }
00158
00159     fputs($fp, $header . $postback . "\r\n\r\n");
00160     $header_data = '';
00161     $headerdone = false;
00162     //loop through the response from the server
00163     while(!feof($fp)) {
00164       $line = @fgets($fp, 1024);
00165       if (strcmp($line, "\r\n") == 0) {
00166         // this is a header row
00167         $headerdone = true;
00168         $header_data .= $line;
00169       } else if ($headerdone) {
00170         // header has been read. now read the contents
00171         $info[] = $line;
00172       }
00173     }
00174     //close fp - we are done with it
00175     fclose($fp);
00176     //break up results into a string
00177     $info = implode("", $info);
00178     $status = (strstr($info,'VERIFIED')) ? 'VERIFIED' : (strstr($info,'SUCCESS')) ? 'SUCCESS' : (strstr($info,'INVALID')) ? 'FSOCKOPEN() RESPONSE RECEIVED - Communications OKAY' : 'FAILED';
00179     echo "\n\n" . '<!-- IPN INFO - Confirmation/Validation response ' . "\n-------------\n" . $header_data . $info . "\n--------------\n -->";
00180
00181     return $status;
00182   }
00183
00184
00185   function doPayPalIPNCurlPostback($web, $vars, $verboseMode = FALSE, $headerMode = FALSE) {
00186     $status = 'Attempted connection on: ' .$web['scheme'] . '://' . $web['host'] . $web['path'];
00187     $ch = curl_init($web['scheme'] . '://' . $web['host'] . $web['path']);
00188     $curlOpts = array(CURLOPT_URL => $web['scheme'] . '://' . $web['host'] . $web['path'],
00189                       CURLOPT_POST => TRUE,
00190                       CURLOPT_POSTFIELDS => $vars,
00191                       CURLOPT_TIMEOUT => 45,
00192                       CURLOPT_CONNECTTIMEOUT => 30,
00193                       CURLOPT_VERBOSE => ($verboseMode ? TRUE : FALSE),
00194                       CURLOPT_HEADER => ($headerMode ? TRUE : FALSE),
00195                       CURLOPT_FOLLOWLOCATION => FALSE,
00196                       CURLOPT_RETURNTRANSFER => TRUE,
00197                       CURLOPT_SSL_VERIFYPEER => FALSE,
00198                       CURLOPT_SSL_VERIFYHOST => 2,
00199                       CURLOPT_FORBID_REUSE => TRUE,
00200                       CURLOPT_FRESH_CONNECT => TRUE,
00201                       CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
00202                       CURLOPT_USERAGENT => 'Zen Cart(tm) - IPN Postback TEST',
00203                       );
00204     if ($web['port'] != '80') {
00205       $curlOpts[CURLOPT_PORT] = $web['port'];
00206     }
00207 /*    if (CURL_PROXY_REQUIRED == 'True') {
00208       $proxy_tunnel_flag = (defined('CURL_PROXY_TUNNEL_FLAG') && strtoupper(CURL_PROXY_TUNNEL_FLAG) == 'FALSE') ? false : true;
00209       curl_setopt ($ch, CURLOPT_HTTPPROXYTUNNEL, $proxy_tunnel_flag);
00210       curl_setopt ($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
00211       curl_setopt ($ch, CURLOPT_PROXY, CURL_PROXY_SERVER_DETAILS);
00212     }
00213 */
00214     curl_setopt_array($ch, $curlOpts);
00215     $response = curl_exec($ch);
00216     $commError = curl_error($ch);
00217     $commErrNo = curl_errno($ch);
00218     $errors = ($commErrNo != 0 ? "\n(" . $commErrNo . ') ' . $commError : '');
00219
00220     if (($response == '' || $errors != '') && ($web['scheme'] != 'http')) {
00221       if ($verboseMode) echo nl2br("\n\n" . 'VERBOSE output:' . "\n-------------\n<pre>" . htmlspecialchars($response) . "</pre>\n--------------\n");
00222       echo nl2br('CURL ERROR: ' . $status . $errors . "\n" . 'Trying direct HTTP on port 80 instead ...' . "\n");
00223       $web['scheme'] = 'http';
00224       $web['port'] = '80';
00225       $status = 'Attempted alternate connection on: ' .$web['scheme'] . '://' . $web['host'] . $web['path'] . "\n<br />";
00226       curl_setopt($ch, CURLOPT_URL, $web['scheme'] . '://' . $web['host'] . $web['path']);
00227       curl_setopt($ch, CURLOPT_PORT, $web['port']);
00228       $response = curl_exec($ch);
00229       $commError = curl_error($ch);
00230       $commErrNo = curl_errno($ch);
00231     }
00232     //$commInfo = @curl_getinfo($ch);
00233     curl_close($ch);
00234     //die("\n\n".'data:'.$response);
00235     if ($verboseMode) echo nl2br("\n\n" . 'VERBOSE output: ' . "\n-------------\n<pre>" . htmlspecialchars($response) . "</pre>\n--------------\n");
00236     $errors = ($commErrNo != 0 ? "\n(" . $commErrNo . ') ' . $commError : '');
00237     if ($errors != '') {
00238       echo nl2br('CURL ERROR: ' . $status . $errors . "\n" . 'ABORTING CURL METHOD ...' . "\n\n");
00239     }
00240
00241     $status = (strstr($response,'VERIFIED')) ? 'VERIFIED' : (strstr($response,'SUCCESS')) ? 'SUCCESS' : (strstr($response,'INVALID')) ? 'CURL RESPONSE RECEIVED - Communications OKAY' : 'FAILED';
00242     echo  $status . '<br />';
00243
00244
00245     return $response;
00246   }
00247