Why is my Curl login to Barnesandnoble.com failing with SSL and cookies?

Troubleshooting Login on Barnesandnoble.com using Curl with SSL and Cookies

Introduction

You're encountering issues logging in to Barnesandnoble.com's mobile site using Curl with SSL and cookies. Despite having a working code for eBay, the login fails specifically on Barnesandnoble.com, which uses HTTPS.

Analysis and Solution

The original code had two potential problems:

1. URLEncode Parameters: The email and password in the POST string should be URLencoded to ensure correct parameter handling.
2. x Value: The login URL may require an x parameter, which was extracted from the initial HTML response.

The revised code below addresses these issues:

// ... Your previous code ...

// URLEncode POST parameters
$fields['emailAddress'] = urlencode($EMAIL);
$fields['acctPassword'] = urlencode($PASSWORD);

// Get x value from initial page
$x = '';
if (preg_match('/op\.asp\?x=(\d+)/i', $content, $match)) {
    $x = $match[1];
}

// Set login URL with x parameter
$LOGINURL = "https://cart2.barnesandnoble.com/mobileacct/op.asp?x=$x";

// ... Your previous code ...

This updated code successfully logs in to Barnesandnoble.com. Once you have obtained the cookies, you can create subsequent Curl objects using the same COOKIEFILE and COOKIEJAR options to maintain the logged-in state without additional authentication.

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