node-red-tls-cert-info

A Node-RED node that retrieves SSL/TLS certificate information from a given host and port.

Installation

To install this node, run the following command in your Node-RED user directory:

npm install @cappern/node-red-tls-cert-info

Usage

The tls-cert-info node retrieves the SSL/TLS certificate information from the given host and port. The certificate details are returned in the payload object of the message.

Inputs

| Property | Type | Required | Description | | -------- | ------- | -------- | ----------------------------------------------- | | host | string | yes | Hostname to connect to. | | port | integer | no | Port number to connect to (default is 443). | | payload | string | yes | The payload of the message to publish. |

Outputs

| Property | Type | Description | | -------- | ------ | ------------------------------------------- | | payload | object | Object containing the certificate details. |

The payload object has the following properties:

| Property | Type | Description | | ------------- | ------- | -------------------------------------------------------------------------------- | | subject | object | Object containing the details of the subject of the certificate. | | keysize | integer | The size of the key used in the certificate. | | serialnumber | string | The serial number of the certificate. | | validFrom | string | The date and time when the certificate becomes valid. | | validTo | string | The date and time when the certificate expires. | | san | string | A list of Subject Alternative Names (SANs) present in the certificate. | | pem | string | The PEM-formatted certificate. |

The hostname and port values can be configured in the node's configuration or set by msg.host and msg.port, respectively.

Example Flow

Here is an example flow that retrieves the SSL/TLS certificate information from www.ferrari.com and outputs it to the debug console:

[{"id":"d9458ee26e50ecd5","type":"inject","z":"d2e014450d0e3a4b","name":"Start","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":150,"y":220,"wires":[["50d9be476b07daeb"]]},{"id":"3023f57f560d34c4","type":"debug","z":"d2e014450d0e3a4b","name":"Output SSL-CERT","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":830,"y":220,"wires":[]},{"id":"50d9be476b07daeb","type":"change","z":"d2e014450d0e3a4b","name":"","rules":[{"t":"set","p":"host","pt":"msg","to":"www.ferrari.com","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":370,"y":220,"wires":[["481470c97bd45b0d"]]},{"id":"5590eabc990e75f9","type":"comment","z":"d2e014450d0e3a4b","name":"Set Params","info":"","x":370,"y":160,"wires":[]},{"id":"a2090b54dbf45c3e","type":"comment","z":"d2e014450d0e3a4b","name":"Get Certificate","info":"","x":590,"y":160,"wires":[]},{"id":"22f6d42603cf75ed","type":"comment","z":"d2e014450d0e3a4b","name":"Output Result","info":"","x":810,"y":160,"wires":[]},{"id":"481470c97bd45b0d","type":"tls-cert-info","z":"d2e014450d0e3a4b","name":"","x":590,"y":220,"wires":[["3023f57f560d34c4"]]}]

References

• Node-RED
• SSL/TLS

License

This project is licensed under the MIT License - see the LICENSE file for details.