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

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.