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Example of validating a node-locked license from an Electron app
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='UTF-8'> | |
| <title>Node-locked License Validation Example</title> | |
| </head> | |
| <body> | |
| <button type='button' id='validate-license'> | |
| Validate License | |
| </button> | |
| <script> | |
| const KEYGEN_ACCOUNT = 'YOUR_KEYGEN_ACCOUNT_ID' | |
| // Make sure these npm packages are installed: | |
| const { prompt, confirm } = require('smalltalk') | |
| const { getMac } = require('getmac') | |
| const sha1 = require('sha1') | |
| // Validate license key and machine fingerprint when this button is clicked | |
| const button = document.getElementById('validate-license') | |
| button.addEventListener('click', event => { | |
| event.preventDefault() | |
| // Get the current device's MAC address | |
| getMac((err, mac) => { | |
| if (err) { | |
| console.error(err) | |
| return | |
| } | |
| // Hash the mac address to anonymize the fingerprint | |
| const fingerprint = sha1(mac) | |
| console.log(`Current device fingerprint: ${fingerprint}`) | |
| // Prompt the current user for their license key | |
| prompt('License Required', 'Please enter your license key:', '') | |
| .catch(err => console.error(err)) | |
| // Validate the license key within the scope of the machine's fingerprint | |
| .then(key => { | |
| return fetch(`https://api.keygen.sh/v1/accounts/${KEYGEN_ACCOUNT}/licenses/actions/validate-key`, { | |
| method: 'POST', | |
| headers: { | |
| 'Content-Type': 'application/vnd.api+json', | |
| 'Accept': 'application/vnd.api+json' | |
| }, | |
| body: JSON.stringify({ | |
| meta: { | |
| scope: { fingerprint }, | |
| key | |
| } | |
| }) | |
| }) | |
| }) | |
| // Parse JSON response body | |
| .then(res => res.json()) | |
| // Handle the license validation result | |
| .then(json => { | |
| const { meta, data, errors } = json | |
| if (errors) { | |
| alert('There was an error while validating your license key.') | |
| console.error(errors) | |
| return | |
| } | |
| if (meta.valid) { | |
| alert(`License ${data.id} is valid!`) | |
| return | |
| } | |
| switch (meta.constant) { | |
| case 'NOT_FOUND': { | |
| alert('That license key does not exist.') | |
| break | |
| } | |
| case 'FINGERPRINT_SCOPE_MISMATCH': { | |
| alert(`License ${data.id} is not valid on the current machine: ${fingerprint}.`) | |
| break | |
| } | |
| case 'NO_MACHINES': | |
| case 'NO_MACHINE': { | |
| alert(`License ${data.id} has not been activated yet.`) | |
| // Create a machine resource using the current fingerprint and license ID | |
| // to "activate" the license. | |
| break | |
| } | |
| default: { | |
| alert('That license key is not valid.') | |
| } | |
| } | |
| }) | |
| }) | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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